org.eclipse.swt.graphics.GC Maven / Gradle / Ivy
/*******************************************************************************
* Copyright (c) 2000, 2019 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.swt.graphics;
import org.eclipse.swt.*;
import org.eclipse.swt.internal.*;
import org.eclipse.swt.internal.gdip.*;
import org.eclipse.swt.internal.win32.*;
/**
* Class GC is where all of the drawing capabilities that are
* supported by SWT are located. Instances are used to draw on either an
* Image, a Control, or directly on a Display.
*
* - Styles:
* - LEFT_TO_RIGHT, RIGHT_TO_LEFT
*
*
*
* The SWT drawing coordinate system is the two-dimensional space with the origin
* (0,0) at the top left corner of the drawing area and with (x,y) values increasing
* to the right and downward respectively.
*
*
*
* The result of drawing on an image that was created with an indexed
* palette using a color that is not in the palette is platform specific.
* Some platforms will match to the nearest color while other will draw
* the color itself. This happens because the allocated image might use
* a direct palette on platforms that do not support indexed palette.
*
*
*
* Application code must explicitly invoke the GC.dispose()
* method to release the operating system resources managed by each instance
* when those instances are no longer required. This is particularly
* important on Windows95 and Windows98 where the operating system has a limited
* number of device contexts available.
*
*
*
* Note: Only one of LEFT_TO_RIGHT and RIGHT_TO_LEFT may be specified.
*
*
* @see org.eclipse.swt.events.PaintEvent
* @see GC snippets
* @see SWT Examples: GraphicsExample, PaintExample
* @see Sample code and further information
*/
public final class GC extends Resource {
/**
* the handle to the OS device context
* (Warning: This field is platform dependent)
*
* IMPORTANT: This field is not part of the SWT
* public API. It is marked public only so that it can be shared
* within the packages provided by SWT. It is not available on all
* platforms and should never be accessed from application code.
*
*
* @noreference This field is not intended to be referenced by clients.
*/
public long handle;
Drawable drawable;
GCData data;
static final int FOREGROUND = 1 << 0;
static final int BACKGROUND = 1 << 1;
static final int FONT = 1 << 2;
static final int LINE_STYLE = 1 << 3;
static final int LINE_WIDTH = 1 << 4;
static final int LINE_CAP = 1 << 5;
static final int LINE_JOIN = 1 << 6;
static final int LINE_MITERLIMIT = 1 << 7;
static final int FOREGROUND_TEXT = 1 << 8;
static final int BACKGROUND_TEXT = 1 << 9;
static final int BRUSH = 1 << 10;
static final int PEN = 1 << 11;
static final int NULL_BRUSH = 1 << 12;
static final int NULL_PEN = 1 << 13;
static final int DRAW_OFFSET = 1 << 14;
static final int DRAW = FOREGROUND | LINE_STYLE | LINE_WIDTH | LINE_CAP | LINE_JOIN | LINE_MITERLIMIT | PEN | NULL_BRUSH | DRAW_OFFSET;
static final int FILL = BACKGROUND | BRUSH | NULL_PEN;
static final float[] LINE_DOT_ZERO = new float[]{3, 3};
static final float[] LINE_DASH_ZERO = new float[]{18, 6};
static final float[] LINE_DASHDOT_ZERO = new float[]{9, 6, 3, 6};
static final float[] LINE_DASHDOTDOT_ZERO = new float[]{9, 3, 3, 3, 3, 3};
/**
* Prevents uninitialized instances from being created outside the package.
*/
GC() {
}
/**
* Constructs a new instance of this class which has been
* configured to draw on the specified drawable. Sets the
* foreground color, background color and font in the GC
* to match those in the drawable.
*
* You must dispose the graphics context when it is no longer required.
*
* @param drawable the drawable to draw on
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the drawable is null
* - ERROR_NULL_ARGUMENT - if there is no current device
* - ERROR_INVALID_ARGUMENT
* - if the drawable is an image that is not a bitmap or an icon
* - if the drawable is an image or printer that is already selected
* into another graphics context
*
* @exception SWTError
* - ERROR_NO_HANDLES if a handle could not be obtained for GC creation
* - ERROR_THREAD_INVALID_ACCESS if not called from the thread that created the drawable
*
* @see #dispose()
*/
public GC(Drawable drawable) {
this(drawable, SWT.NONE);
}
/**
* Constructs a new instance of this class which has been
* configured to draw on the specified drawable. Sets the
* foreground color, background color and font in the GC
* to match those in the drawable.
*
* You must dispose the graphics context when it is no longer required.
*
*
* @param drawable the drawable to draw on
* @param style the style of GC to construct
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the drawable is null
* - ERROR_NULL_ARGUMENT - if there is no current device
* - ERROR_INVALID_ARGUMENT
* - if the drawable is an image that is not a bitmap or an icon
* - if the drawable is an image or printer that is already selected
* into another graphics context
*
* @exception SWTError
* - ERROR_NO_HANDLES if a handle could not be obtained for GC creation
* - ERROR_THREAD_INVALID_ACCESS if not called from the thread that created the drawable
*
*
* @see #dispose()
*
* @since 2.1.2
*/
public GC(Drawable drawable, int style) {
if (drawable == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
GCData data = new GCData ();
data.style = checkStyle(style);
long hDC = drawable.internal_new_GC(data);
Device device = data.device;
if (device == null) device = Device.getDevice();
if (device == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
this.device = data.device = device;
init (drawable, data, hDC);
init();
}
static int checkStyle(int style) {
if ((style & SWT.LEFT_TO_RIGHT) != 0) style &= ~SWT.RIGHT_TO_LEFT;
return style & (SWT.LEFT_TO_RIGHT | SWT.RIGHT_TO_LEFT);
}
void checkGC(int mask) {
int state = data.state;
if ((state & mask) == mask) return;
state = (state ^ mask) & mask;
data.state |= mask;
long gdipGraphics = data.gdipGraphics;
if (gdipGraphics != 0) {
long pen = data.gdipPen;
float width = data.lineWidth;
if ((state & FOREGROUND) != 0 || (pen == 0 && (state & (LINE_WIDTH | LINE_STYLE | LINE_MITERLIMIT | LINE_JOIN | LINE_CAP)) != 0)) {
if (data.gdipFgBrush != 0) Gdip.SolidBrush_delete(data.gdipFgBrush);
data.gdipFgBrush = 0;
long brush;
Pattern pattern = data.foregroundPattern;
if (pattern != null) {
if(data.alpha == 0xFF) {
brush = pattern.getHandle(getZoom());
} else {
brush = data.gdipFgPatternBrushAlpha != 0 ? Gdip.Brush_Clone(data.gdipFgPatternBrushAlpha) : createAlphaTextureBrush(pattern.getHandle(getZoom()), data.alpha);
data.gdipFgPatternBrushAlpha = brush;
}
if ((data.style & SWT.MIRRORED) != 0) {
switch (Gdip.Brush_GetType(brush)) {
case Gdip.BrushTypeTextureFill:
brush = Gdip.Brush_Clone(brush);
if (brush == 0) SWT.error(SWT.ERROR_NO_HANDLES);
Gdip.TextureBrush_ScaleTransform(brush, -1, 1, Gdip.MatrixOrderPrepend);
data.gdipFgBrush = brush;
}
}
} else {
int foreground = data.foreground;
int color = (data.alpha << 24) | ((foreground >> 16) & 0xFF) | (foreground & 0xFF00) | ((foreground & 0xFF) << 16);
brush = Gdip.SolidBrush_new(color);
if (brush == 0) SWT.error(SWT.ERROR_NO_HANDLES);
data.gdipFgBrush = brush;
}
if (pen != 0) {
Gdip.Pen_SetBrush(pen, brush);
} else {
pen = data.gdipPen = Gdip.Pen_new(brush, width);
}
}
if ((state & LINE_WIDTH) != 0) {
Gdip.Pen_SetWidth(pen, width);
switch (data.lineStyle) {
case SWT.LINE_CUSTOM:
state |= LINE_STYLE;
}
}
if ((state & LINE_STYLE) != 0) {
float[] dashes = null;
float dashOffset = 0;
int dashStyle = Gdip.DashStyleSolid;
switch (data.lineStyle) {
case SWT.LINE_SOLID: break;
case SWT.LINE_DOT: dashStyle = Gdip.DashStyleDot; if (width == 0) dashes = LINE_DOT_ZERO; break;
case SWT.LINE_DASH: dashStyle = Gdip.DashStyleDash; if (width == 0) dashes = LINE_DASH_ZERO; break;
case SWT.LINE_DASHDOT: dashStyle = Gdip.DashStyleDashDot; if (width == 0) dashes = LINE_DASHDOT_ZERO; break;
case SWT.LINE_DASHDOTDOT: dashStyle = Gdip.DashStyleDashDotDot; if (width == 0) dashes = LINE_DASHDOTDOT_ZERO; break;
case SWT.LINE_CUSTOM: {
if (data.lineDashes != null) {
dashOffset = data.lineDashesOffset / Math.max (1, width);
dashes = new float[data.lineDashes.length * 2];
for (int i = 0; i < data.lineDashes.length; i++) {
float dash = data.lineDashes[i] / Math.max (1, width);
dashes[i] = dash;
dashes[i + data.lineDashes.length] = dash;
}
}
}
}
if (dashes != null) {
Gdip.Pen_SetDashPattern(pen, dashes, dashes.length);
Gdip.Pen_SetDashStyle(pen, Gdip.DashStyleCustom);
Gdip.Pen_SetDashOffset(pen, dashOffset);
} else {
Gdip.Pen_SetDashStyle(pen, dashStyle);
}
}
if ((state & LINE_MITERLIMIT) != 0) {
Gdip.Pen_SetMiterLimit(pen, data.lineMiterLimit);
}
if ((state & LINE_JOIN) != 0) {
int joinStyle = 0;
switch (data.lineJoin) {
case SWT.JOIN_MITER: joinStyle = Gdip.LineJoinMiter; break;
case SWT.JOIN_BEVEL: joinStyle = Gdip.LineJoinBevel; break;
case SWT.JOIN_ROUND: joinStyle = Gdip.LineJoinRound; break;
}
Gdip.Pen_SetLineJoin(pen, joinStyle);
}
if ((state & LINE_CAP) != 0) {
int dashCap = Gdip.DashCapFlat, capStyle = 0;
switch (data.lineCap) {
case SWT.CAP_FLAT: capStyle = Gdip.LineCapFlat; break;
case SWT.CAP_ROUND: capStyle = Gdip.LineCapRound; dashCap = Gdip.DashCapRound; break;
case SWT.CAP_SQUARE: capStyle = Gdip.LineCapSquare; break;
}
Gdip.Pen_SetLineCap(pen, capStyle, capStyle, dashCap);
}
if ((state & BACKGROUND) != 0) {
if (data.gdipBgBrush != 0) Gdip.SolidBrush_delete(data.gdipBgBrush);
data.gdipBgBrush = 0;
Pattern pattern = data.backgroundPattern;
if (pattern != null) {
if(data.alpha == 0xFF) {
data.gdipBrush = pattern.getHandle(getZoom());
} else {
long brush = data.gdipBgPatternBrushAlpha != 0 ? Gdip.Brush_Clone(data.gdipBgPatternBrushAlpha) : createAlphaTextureBrush(pattern.getHandle(getZoom()), data.alpha);
data.gdipBrush = data.gdipBgBrush /*= data.gdipBgPatternBrushAlpha */ = brush;
}
if ((data.style & SWT.MIRRORED) != 0) {
switch (Gdip.Brush_GetType(data.gdipBrush)) {
case Gdip.BrushTypeTextureFill:
long brush = Gdip.Brush_Clone(data.gdipBrush);
if (brush == 0) SWT.error(SWT.ERROR_NO_HANDLES);
Gdip.TextureBrush_ScaleTransform(brush, -1, 1, Gdip.MatrixOrderPrepend);
data.gdipBrush = data.gdipBgBrush = brush;
}
}
} else {
int background = data.background;
int color = (data.alpha << 24) | ((background >> 16) & 0xFF) | (background & 0xFF00) | ((background & 0xFF) << 16);
long brush = Gdip.SolidBrush_new(color);
if (brush == 0) SWT.error(SWT.ERROR_NO_HANDLES);
data.gdipBrush = data.gdipBgBrush = brush;
}
}
if ((state & FONT) != 0) {
Font font = data.font;
OS.SelectObject(handle, font.handle);
long[] hFont = new long[1];
long gdipFont = createGdipFont(handle, font.handle, gdipGraphics, device.fontCollection, null, hFont);
if (hFont[0] != 0) OS.SelectObject(handle, hFont[0]);
if (data.hGDIFont != 0) OS.DeleteObject(data.hGDIFont);
data.hGDIFont = hFont[0];
if (data.gdipFont != 0) Gdip.Font_delete(data.gdipFont);
data.gdipFont = gdipFont;
}
if ((state & DRAW_OFFSET) != 0) {
int effectiveLineWidth = data.lineWidth < 1 ? 1 : Math.round(data.lineWidth);
if (effectiveLineWidth % 2 == 1) {
PointF offset = new PointF();
// In case the effective line width is odd, shift coordinates by (0.5, 0.5).
// I.e., a line starting at (0,0) will effectively start in the pixel right
// below that coordinate with its center at (0.5, 0.5).
offset.X = offset.Y = 0.5f;
// The offset will be applied to the coordinate system of the GC; so transform
// it from the drawing coordinate system to the coordinate system of the GC by
// applying the inverse transformation as the one applied to the GC and correct
// it by the line width.
long newMatrix = Gdip.Matrix_new(1, 0, 0, 1, 0, 0);
Gdip.Graphics_GetTransform(gdipGraphics, newMatrix);
Gdip.Matrix_Invert(newMatrix);
Gdip.Matrix_TransformVectors(newMatrix, offset, 1);
Gdip.Matrix_delete(newMatrix);
data.gdipXOffset = Math.abs(offset.X);
data.gdipYOffset = Math.abs(offset.Y);
} else {
data.gdipXOffset = data.gdipYOffset = 0;
}
}
return;
}
if ((state & (FOREGROUND | LINE_CAP | LINE_JOIN | LINE_STYLE | LINE_WIDTH)) != 0) {
int color = data.foreground;
int width = (int)data.lineWidth;
int[] dashes = null;
int lineStyle = OS.PS_SOLID;
switch (data.lineStyle) {
case SWT.LINE_SOLID: break;
case SWT.LINE_DASH: lineStyle = OS.PS_DASH; break;
case SWT.LINE_DOT: lineStyle = OS.PS_DOT; break;
case SWT.LINE_DASHDOT: lineStyle = OS.PS_DASHDOT; break;
case SWT.LINE_DASHDOTDOT: lineStyle = OS.PS_DASHDOTDOT; break;
case SWT.LINE_CUSTOM: {
if (data.lineDashes != null) {
lineStyle = OS.PS_USERSTYLE;
dashes = new int[data.lineDashes.length];
for (int i = 0; i < dashes.length; i++) {
dashes[i] = (int)data.lineDashes[i];
}
}
break;
}
}
if ((state & LINE_STYLE) != 0) {
OS.SetBkMode(handle, data.lineStyle == SWT.LINE_SOLID ? OS.OPAQUE : OS.TRANSPARENT);
}
int joinStyle = 0;
switch (data.lineJoin) {
case SWT.JOIN_MITER: joinStyle = OS.PS_JOIN_MITER; break;
case SWT.JOIN_ROUND: joinStyle = OS.PS_JOIN_ROUND; break;
case SWT.JOIN_BEVEL: joinStyle = OS.PS_JOIN_BEVEL; break;
}
int capStyle = 0;
switch (data.lineCap) {
case SWT.CAP_ROUND: capStyle = OS.PS_ENDCAP_ROUND; break;
case SWT.CAP_FLAT: capStyle = OS.PS_ENDCAP_FLAT; break;
case SWT.CAP_SQUARE: capStyle = OS.PS_ENDCAP_SQUARE;break;
}
int style = lineStyle | joinStyle | capStyle;
/*
* Feature in Windows. Windows does not honour line styles other then
* PS_SOLID for pens wider than 1 pixel created with CreatePen(). The fix
* is to use ExtCreatePen() instead.
*/
long newPen;
if ((width == 0 && lineStyle != OS.PS_USERSTYLE) || style == 0) {
newPen = OS.CreatePen(style & OS.PS_STYLE_MASK, width, color);
} else {
LOGBRUSH logBrush = new LOGBRUSH();
logBrush.lbStyle = OS.BS_SOLID;
logBrush.lbColor = color;
/* Feature in Windows. PS_GEOMETRIC pens cannot have zero width. */
newPen = OS.ExtCreatePen (style | OS.PS_GEOMETRIC, Math.max(1, width), logBrush, dashes != null ? dashes.length : 0, dashes);
}
OS.SelectObject(handle, newPen);
data.state |= PEN;
data.state &= ~NULL_PEN;
if (data.hPen != 0) OS.DeleteObject(data.hPen);
data.hPen = data.hOldPen = newPen;
} else if ((state & PEN) != 0) {
OS.SelectObject(handle, data.hOldPen);
data.state &= ~NULL_PEN;
} else if ((state & NULL_PEN) != 0) {
data.hOldPen = OS.SelectObject(handle, OS.GetStockObject(OS.NULL_PEN));
data.state &= ~PEN;
}
if ((state & BACKGROUND) != 0) {
long newBrush = OS.CreateSolidBrush(data.background);
OS.SelectObject(handle, newBrush);
data.state |= BRUSH;
data.state &= ~NULL_BRUSH;
if (data.hBrush != 0) OS.DeleteObject(data.hBrush);
data.hOldBrush = data.hBrush = newBrush;
} else if ((state & BRUSH) != 0) {
OS.SelectObject(handle, data.hOldBrush);
data.state &= ~NULL_BRUSH;
} else if ((state & NULL_BRUSH) != 0) {
data.hOldBrush = OS.SelectObject(handle, OS.GetStockObject(OS.NULL_BRUSH));
data.state &= ~BRUSH;
}
if ((state & BACKGROUND_TEXT) != 0) {
OS.SetBkColor(handle, data.background);
}
if ((state & FOREGROUND_TEXT) != 0) {
OS.SetTextColor(handle, data.foreground);
}
if ((state & FONT) != 0) {
Font font = data.font;
OS.SelectObject(handle, font.handle);
}
}
/**
* Copies a rectangular area of the receiver at the specified
* position into the image, which must be of type SWT.BITMAP.
*
* @param image the image to copy into
* @param x the x coordinate in the receiver of the area to be copied
* @param y the y coordinate in the receiver of the area to be copied
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the image is null
* - ERROR_INVALID_ARGUMENT - if the image is not a bitmap or has been disposed
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void copyArea (Image image, int x, int y) {
int deviceZoom = getZoom();
x = DPIUtil.scaleUp(drawable, x, deviceZoom);
y = DPIUtil.scaleUp(drawable, y, deviceZoom);
copyAreaInPixels(image, x, y);
}
void copyAreaInPixels(Image image, int x, int y) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (image == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
if (image.type != SWT.BITMAP || image.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
/* Copy the bitmap area */
Rectangle rect = image.getBoundsInPixels();
long memHdc = OS.CreateCompatibleDC(handle);
long hOldBitmap = OS.SelectObject(memHdc, Image.win32_getHandle(image, getZoom()));
OS.BitBlt(memHdc, 0, 0, rect.width, rect.height, handle, x, y, OS.SRCCOPY);
OS.SelectObject(memHdc, hOldBitmap);
OS.DeleteDC(memHdc);
}
/**
* Copies a rectangular area of the receiver at the source
* position onto the receiver at the destination position.
*
* @param srcX the x coordinate in the receiver of the area to be copied
* @param srcY the y coordinate in the receiver of the area to be copied
* @param width the width of the area to copy
* @param height the height of the area to copy
* @param destX the x coordinate in the receiver of the area to copy to
* @param destY the y coordinate in the receiver of the area to copy to
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void copyArea (int srcX, int srcY, int width, int height, int destX, int destY) {
copyArea (srcX, srcY, width, height, destX, destY, true);
}
/**
* Copies a rectangular area of the receiver at the source
* position onto the receiver at the destination position.
*
* @param srcX the x coordinate in the receiver of the area to be copied
* @param srcY the y coordinate in the receiver of the area to be copied
* @param width the width of the area to copy
* @param height the height of the area to copy
* @param destX the x coordinate in the receiver of the area to copy to
* @param destY the y coordinate in the receiver of the area to copy to
* @param paint if true paint events will be generated for old and obscured areas
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @since 3.1
*/
public void copyArea (int srcX, int srcY, int width, int height, int destX, int destY, boolean paint) {
int deviceZoom = getZoom();
srcX = DPIUtil.scaleUp(drawable, srcX, deviceZoom);
srcY = DPIUtil.scaleUp(drawable, srcY, deviceZoom);
width = DPIUtil.scaleUp(drawable, width, deviceZoom);
height = DPIUtil.scaleUp(drawable, height, deviceZoom);
destX = DPIUtil.scaleUp(drawable, destX, deviceZoom);
destY = DPIUtil.scaleUp(drawable, destY, deviceZoom);
copyAreaInPixels(srcX, srcY, width, height, destX, destY, paint);
}
void copyAreaInPixels(int srcX, int srcY, int width, int height, int destX, int destY, boolean paint) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
long hwnd = data.hwnd;
if (hwnd == 0) {
OS.BitBlt(handle, destX, destY, width, height, handle, srcX, srcY, OS.SRCCOPY);
} else {
RECT lprcClip = null;
long hrgn = OS.CreateRectRgn(0, 0, 0, 0);
if (OS.GetClipRgn(handle, hrgn) == 1) {
lprcClip = new RECT();
OS.GetRgnBox(hrgn, lprcClip);
}
OS.DeleteObject(hrgn);
RECT lprcScroll = new RECT();
OS.SetRect(lprcScroll, srcX, srcY, srcX + width, srcY + height);
int flags = paint ? OS.SW_INVALIDATE | OS.SW_ERASE : 0;
OS.ScrollWindowEx(hwnd, destX - srcX, destY - srcY, lprcScroll, lprcClip, 0, null, flags);
}
}
static long createGdipFont(long hDC, long hFont, long graphics, long fontCollection, long [] outFamily, long[] outFont) {
long font = Gdip.Font_new(hDC, hFont);
if (font == 0) SWT.error(SWT.ERROR_NO_HANDLES);
long family = 0;
if (!Gdip.Font_IsAvailable(font)) {
Gdip.Font_delete(font);
LOGFONT logFont = new LOGFONT ();
OS.GetObject(hFont, LOGFONT.sizeof, logFont);
int size = Math.abs(logFont.lfHeight);
int style = Gdip.FontStyleRegular;
if (logFont.lfWeight == 700) style |= Gdip.FontStyleBold;
if (logFont.lfItalic != 0) style |= Gdip.FontStyleItalic;
char[] chars = logFont.lfFaceName;
int index = 0;
while (index < chars.length) {
if (chars [index] == 0) break;
index++;
}
String name = new String (chars, 0, index);
if (name.equalsIgnoreCase("Courier")) { //$NON-NLS-1$
name = "Courier New"; //$NON-NLS-1$
}
char[] buffer = new char[name.length() + 1];
name.getChars(0, name.length(), buffer, 0);
if (fontCollection != 0) {
family = Gdip.FontFamily_new(buffer, fontCollection);
if (!Gdip.FontFamily_IsAvailable(family)) {
Gdip.FontFamily_delete(family);
family = Gdip.FontFamily_new(buffer, 0);
if (!Gdip.FontFamily_IsAvailable(family)) {
Gdip.FontFamily_delete(family);
family = 0;
}
}
}
if (family != 0) {
font = Gdip.Font_new(family, size, style, Gdip.UnitPixel);
} else {
font = Gdip.Font_new(buffer, size, style, Gdip.UnitPixel, 0);
}
if (outFont != null && font != 0) {
long hHeap = OS.GetProcessHeap();
long pLogFont = OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, LOGFONT.sizeof);
Gdip.Font_GetLogFontW(font, graphics, pLogFont);
outFont[0] = OS.CreateFontIndirect(pLogFont);
OS.HeapFree(hHeap, 0, pLogFont);
}
}
if (outFamily != null && font != 0) {
if (family == 0) {
family = Gdip.FontFamily_new();
Gdip.Font_GetFamily(font, family);
}
outFamily [0] = family;
} else {
if (family != 0) Gdip.FontFamily_delete(family);
}
if (font == 0) SWT.error(SWT.ERROR_NO_HANDLES);
return font;
}
/**
* Create a new brush with transparency from the image in {@link brush}.
*
* The returned brush has to be disposed by the caller.
*
* @param brush Brush with pattern
* @return new brush with transparency
* @exception SWTError
* - ERROR_CANNOT_BE_ZERO - if the image in the brush is null
* - ERROR_NO_HANDLES - if no handles are available to perform the operation
*
*/
static long createAlphaTextureBrush(long brush, int alpha) {
if (Gdip.Brush_GetType(brush) != Gdip.BrushTypeTextureFill) {
return Gdip.Brush_Clone(brush);
}
long hatchImage = Gdip.TextureBrush_GetImage(brush);
if (hatchImage == 0) SWT.error(SWT.ERROR_CANNOT_BE_ZERO);
long transparentHatchImage = Gdip.Image_Clone(hatchImage);
if (transparentHatchImage == 0) SWT.error(SWT.ERROR_NO_HANDLES);
long attrib = Gdip.ImageAttributes_new();
Gdip.ImageAttributes_SetWrapMode(attrib, Gdip.WrapModeTile);
float[] matrix = new float[]{
1,0,0,0,0,
0,1,0,0,0,
0,0,1,0,0,
0,0,0,alpha / (float)0xFF,0,
0,0,0,0,1,
};
Gdip.ImageAttributes_SetColorMatrix(attrib, matrix, Gdip.ColorMatrixFlagsDefault, Gdip.ColorAdjustTypeBitmap);
Rect rect = new Rect();
rect.X = 0;
rect.Y = 0;
rect.Width = Gdip.Image_GetWidth(transparentHatchImage);
rect.Height = Gdip.Image_GetHeight(transparentHatchImage);
long transparentBrush = Gdip.TextureBrush_new(transparentHatchImage, rect, attrib);
if (brush == 0) SWT.error(SWT.ERROR_NO_HANDLES);
Gdip.ImageAttributes_delete(attrib);
Gdip.Image_delete(transparentHatchImage);
return transparentBrush;
}
static void destroyGdipBrush(long brush) {
int type = Gdip.Brush_GetType(brush);
switch (type) {
case Gdip.BrushTypeSolidColor:
Gdip.SolidBrush_delete(brush);
break;
case Gdip.BrushTypeHatchFill:
Gdip.HatchBrush_delete(brush);
break;
case Gdip.BrushTypeLinearGradient:
Gdip.LinearGradientBrush_delete(brush);
break;
case Gdip.BrushTypeTextureFill:
Gdip.TextureBrush_delete(brush);
break;
}
}
/**
* Disposes of the operating system resources associated with
* the graphics context. Applications must dispose of all GCs
* which they allocate.
*
* @exception SWTError
* - ERROR_THREAD_INVALID_ACCESS if not called from the thread that created the drawable
*
*/
@Override
void destroy() {
boolean gdip = data.gdipGraphics != 0;
disposeGdip();
if (gdip && (data.style & SWT.MIRRORED) != 0) {
OS.SetLayout(handle, OS.GetLayout(handle) | OS.LAYOUT_RTL);
}
/* Select stock pen and brush objects and free resources */
if (data.hPen != 0) {
OS.SelectObject(handle, OS.GetStockObject(OS.NULL_PEN));
OS.DeleteObject(data.hPen);
data.hPen = 0;
}
if (data.hBrush != 0) {
OS.SelectObject(handle, OS.GetStockObject(OS.NULL_BRUSH));
OS.DeleteObject(data.hBrush);
data.hBrush = 0;
}
/*
* Put back the original bitmap into the device context.
* This will ensure that we have not left a bitmap
* selected in it when we delete the HDC.
*/
long hNullBitmap = data.hNullBitmap;
if (hNullBitmap != 0) {
OS.SelectObject(handle, hNullBitmap);
data.hNullBitmap = 0;
}
Image image = data.image;
if (image != null) image.memGC = null;
/*
* Dispose the HDC.
*/
if (drawable != null) drawable.internal_dispose_GC(handle, data);
drawable = null;
handle = 0;
data.image = null;
data.ps = null;
data = null;
}
void disposeGdip() {
if (data.gdipPen != 0) Gdip.Pen_delete(data.gdipPen);
if (data.gdipBgBrush != 0) destroyGdipBrush(data.gdipBgBrush);
if (data.gdipFgBrush != 0) destroyGdipBrush(data.gdipFgBrush);
if (data.gdipFont != 0) Gdip.Font_delete(data.gdipFont);
if (data.hGDIFont != 0) OS.DeleteObject(data.hGDIFont);
if (data.gdipGraphics != 0) Gdip.Graphics_delete(data.gdipGraphics);
if (data.gdipBgPatternBrushAlpha != 0) destroyGdipBrush(data.gdipBgPatternBrushAlpha);
if (data.gdipFgPatternBrushAlpha != 0) destroyGdipBrush(data.gdipFgPatternBrushAlpha);
data.gdipGraphics = data.gdipBrush = data.gdipBgBrush = data.gdipFgBrush =
data.gdipFont = data.gdipPen = data.hGDIFont = data.gdipBgPatternBrushAlpha =
data.gdipFgPatternBrushAlpha = 0;
}
/**
* Draws the outline of a circular or elliptical arc
* within the specified rectangular area.
*
* The resulting arc begins at startAngle and extends
* for arcAngle degrees, using the current color.
* Angles are interpreted such that 0 degrees is at the 3 o'clock
* position. A positive value indicates a counter-clockwise rotation
* while a negative value indicates a clockwise rotation.
*
* The center of the arc is the center of the rectangle whose origin
* is (x, y) and whose size is specified by the
* width and height arguments.
*
* The resulting arc covers an area width + 1 points wide
* by height + 1 points tall.
*
*
* @param x the x coordinate of the upper-left corner of the arc to be drawn
* @param y the y coordinate of the upper-left corner of the arc to be drawn
* @param width the width of the arc to be drawn
* @param height the height of the arc to be drawn
* @param startAngle the beginning angle
* @param arcAngle the angular extent of the arc, relative to the start angle
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void drawArc (int x, int y, int width, int height, int startAngle, int arcAngle) {
int deviceZoom = getZoom();
x = DPIUtil.scaleUp(drawable, x, deviceZoom);
y = DPIUtil.scaleUp(drawable, y, deviceZoom);
width = DPIUtil.scaleUp(drawable, width, deviceZoom);
height = DPIUtil.scaleUp(drawable, height, deviceZoom);
drawArcInPixels(x, y, width, height, startAngle, arcAngle);
}
void drawArcInPixels (int x, int y, int width, int height, int startAngle, int arcAngle) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
checkGC(DRAW);
if (width < 0) {
x = x + width;
width = -width;
}
if (height < 0) {
y = y + height;
height = -height;
}
if (width == 0 || height == 0 || arcAngle == 0) return;
long gdipGraphics = data.gdipGraphics;
if (gdipGraphics != 0) {
Gdip.Graphics_TranslateTransform(gdipGraphics, data.gdipXOffset, data.gdipYOffset, Gdip.MatrixOrderPrepend);
if (width == height) {
Gdip.Graphics_DrawArc(gdipGraphics, data.gdipPen, x, y, width, height, -startAngle, -arcAngle);
} else {
long path = Gdip.GraphicsPath_new(Gdip.FillModeAlternate);
if (path == 0) SWT.error(SWT.ERROR_NO_HANDLES);
long matrix = Gdip.Matrix_new(width, 0, 0, height, x, y);
if (matrix == 0) SWT.error(SWT.ERROR_NO_HANDLES);
Gdip.GraphicsPath_AddArc(path, 0, 0, 1, 1, -startAngle, -arcAngle);
Gdip.GraphicsPath_Transform(path, matrix);
Gdip.Graphics_DrawPath(gdipGraphics, data.gdipPen, path);
Gdip.Matrix_delete(matrix);
Gdip.GraphicsPath_delete(path);
}
Gdip.Graphics_TranslateTransform(gdipGraphics, -data.gdipXOffset, -data.gdipYOffset, Gdip.MatrixOrderPrepend);
return;
}
if ((data.style & SWT.MIRRORED) != 0) {
if (data.lineWidth != 0 && data.lineWidth % 2 == 0) x--;
}
int x1, y1, x2, y2,tmp;
boolean isNegative;
if (arcAngle >= 360 || arcAngle <= -360) {
x1 = x2 = x + width;
y1 = y2 = y + height / 2;
} else {
isNegative = arcAngle < 0;
arcAngle = arcAngle + startAngle;
if (isNegative) {
// swap angles
tmp = startAngle;
startAngle = arcAngle;
arcAngle = tmp;
}
x1 = cos(startAngle, width) + x + width/2;
y1 = -1 * sin(startAngle, height) + y + height/2;
x2 = cos(arcAngle, width) + x + width/2;
y2 = -1 * sin(arcAngle, height) + y + height/2;
}
OS.Arc(handle, x, y, x + width + 1, y + height + 1, x1, y1, x2, y2);
}
/**
* Draws a rectangle, based on the specified arguments, which has
* the appearance of the platform's focus rectangle if the
* platform supports such a notion, and otherwise draws a simple
* rectangle in the receiver's foreground color.
*
* @param x the x coordinate of the rectangle
* @param y the y coordinate of the rectangle
* @param width the width of the rectangle
* @param height the height of the rectangle
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @see #drawRectangle(int, int, int, int)
*/
public void drawFocus (int x, int y, int width, int height) {
int deviceZoom = getZoom();
x = DPIUtil.scaleUp (drawable, x, deviceZoom);
y = DPIUtil.scaleUp (drawable, y, deviceZoom);
width = DPIUtil.scaleUp (drawable, width, deviceZoom);
height = DPIUtil.scaleUp (drawable, height, deviceZoom);
drawFocusInPixels(x, y, width, height);
}
void drawFocusInPixels (int x, int y, int width, int height) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if ((data.uiState & OS.UISF_HIDEFOCUS) != 0) return;
data.focusDrawn = true;
long hdc = handle;
int state = 0;
long gdipGraphics = data.gdipGraphics;
if (gdipGraphics != 0) {
long clipRgn = 0;
Gdip.Graphics_SetPixelOffsetMode(gdipGraphics, Gdip.PixelOffsetModeNone);
long rgn = Gdip.Region_new();
if (rgn == 0) SWT.error(SWT.ERROR_NO_HANDLES);
Gdip.Graphics_GetClip(gdipGraphics, rgn);
if (!Gdip.Region_IsInfinite(rgn, gdipGraphics)) {
clipRgn = Gdip.Region_GetHRGN(rgn, gdipGraphics);
}
Gdip.Region_delete(rgn);
Gdip.Graphics_SetPixelOffsetMode(gdipGraphics, Gdip.PixelOffsetModeHalf);
float[] lpXform = null;
long matrix = Gdip.Matrix_new(1, 0, 0, 1, 0, 0);
if (matrix == 0) SWT.error(SWT.ERROR_NO_HANDLES);
Gdip.Graphics_GetTransform(gdipGraphics, matrix);
if (!Gdip.Matrix_IsIdentity(matrix)) {
lpXform = new float[6];
Gdip.Matrix_GetElements(matrix, lpXform);
}
Gdip.Matrix_delete(matrix);
hdc = Gdip.Graphics_GetHDC(gdipGraphics);
state = OS.SaveDC(hdc);
if (lpXform != null) {
OS.SetGraphicsMode(hdc, OS.GM_ADVANCED);
OS.SetWorldTransform(hdc, lpXform);
}
if (clipRgn != 0) {
OS.SelectClipRgn(hdc, clipRgn);
OS.DeleteObject(clipRgn);
}
}
OS.SetBkColor(hdc, 0xFFFFFF);
OS.SetTextColor(hdc, 0x000000);
RECT rect = new RECT();
OS.SetRect(rect, x, y, x + width, y + height);
OS.DrawFocusRect(hdc, rect);
if (gdipGraphics != 0) {
OS.RestoreDC(hdc, state);
Gdip.Graphics_ReleaseHDC(gdipGraphics, hdc);
} else {
data.state &= ~(BACKGROUND_TEXT | FOREGROUND_TEXT);
}
}
/**
* Draws the given image in the receiver at the specified
* coordinates.
*
* @param image the image to draw
* @param x the x coordinate of where to draw
* @param y the y coordinate of where to draw
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the image is null
* - ERROR_INVALID_ARGUMENT - if the image has been disposed
* - ERROR_INVALID_ARGUMENT - if the given coordinates are outside the bounds of the image
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
* @exception SWTError
* - ERROR_NO_HANDLES - if no handles are available to perform the operation
*
*/
public void drawImage (Image image, int x, int y) {
int deviceZoom = getZoom();
x = DPIUtil.scaleUp(drawable, x, deviceZoom);
y = DPIUtil.scaleUp(drawable, y, deviceZoom);
drawImageInPixels(image, x, y);
}
void drawImageInPixels(Image image, int x, int y) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (image == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
if (image.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
drawImage(image, 0, 0, -1, -1, x, y, -1, -1, true);
}
/**
* Copies a rectangular area from the source image into a (potentially
* different sized) rectangular area in the receiver. If the source
* and destination areas are of differing sizes, then the source
* area will be stretched or shrunk to fit the destination area
* as it is copied. The copy fails if any part of the source rectangle
* lies outside the bounds of the source image, or if any of the width
* or height arguments are negative.
*
* @param image the source image
* @param srcX the x coordinate in the source image to copy from
* @param srcY the y coordinate in the source image to copy from
* @param srcWidth the width in points to copy from the source
* @param srcHeight the height in points to copy from the source
* @param destX the x coordinate in the destination to copy to
* @param destY the y coordinate in the destination to copy to
* @param destWidth the width in points of the destination rectangle
* @param destHeight the height in points of the destination rectangle
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the image is null
* - ERROR_INVALID_ARGUMENT - if the image has been disposed
* - ERROR_INVALID_ARGUMENT - if any of the width or height arguments are negative.
*
- ERROR_INVALID_ARGUMENT - if the source rectangle is not contained within the bounds of the source image
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
* @exception SWTError
* - ERROR_NO_HANDLES - if no handles are available to perform the operation
*
*/
public void drawImage (Image image, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (srcWidth == 0 || srcHeight == 0 || destWidth == 0 || destHeight == 0) return;
if (srcX < 0 || srcY < 0 || srcWidth < 0 || srcHeight < 0 || destWidth < 0 || destHeight < 0) {
SWT.error (SWT.ERROR_INVALID_ARGUMENT);
}
if (image == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
if (image.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
int deviceZoom = getZoom();
Rectangle src = DPIUtil.scaleUp(drawable, new Rectangle(srcX, srcY, srcWidth, srcHeight), deviceZoom);
Rectangle dest = DPIUtil.scaleUp(drawable, new Rectangle(destX, destY, destWidth, destHeight), deviceZoom);
if (deviceZoom != 100) {
/*
* This is a HACK! Due to rounding errors at fractional scale factors,
* the coordinates may be slightly off. The workaround is to restrict
* coordinates to the allowed bounds.
*/
Rectangle b = image.getBounds(deviceZoom);
int errX = src.x + src.width - b.width;
int errY = src.y + src.height - b.height;
if (errX != 0 || errY != 0) {
if (errX <= deviceZoom / 100 && errY <= deviceZoom / 100) {
src.intersect(b);
} else {
SWT.error (SWT.ERROR_INVALID_ARGUMENT);
}
}
}
drawImage(image, src.x, src.y, src.width, src.height, dest.x, dest.y, dest.width, dest.height, false);
}
void drawImage(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple) {
if (data.gdipGraphics != 0) {
//TODO - cache bitmap
long [] gdipImage = srcImage.createGdipImage(getZoom());
long img = gdipImage[0];
int imgWidth = Gdip.Image_GetWidth(img);
int imgHeight = Gdip.Image_GetHeight(img);
if (simple) {
srcWidth = destWidth = imgWidth;
srcHeight = destHeight = imgHeight;
} else {
if (srcX + srcWidth > imgWidth || srcY + srcHeight > imgHeight) {
SWT.error (SWT.ERROR_INVALID_ARGUMENT);
}
simple = srcX == 0 && srcY == 0 &&
srcWidth == destWidth && destWidth == imgWidth &&
srcHeight == destHeight && destHeight == imgHeight;
}
Rect rect = new Rect();
rect.X = destX;
rect.Y = destY;
rect.Width = destWidth;
rect.Height = destHeight;
/*
* Note that if the wrap mode is not WrapModeTileFlipXY, the scaled image
* is translucent around the borders.
*/
long attrib = Gdip.ImageAttributes_new();
Gdip.ImageAttributes_SetWrapMode(attrib, Gdip.WrapModeTileFlipXY);
if (data.alpha != 0xFF) {
float[] matrix = new float[]{
1,0,0,0,0,
0,1,0,0,0,
0,0,1,0,0,
0,0,0,data.alpha / (float)0xFF,0,
0,0,0,0,1,
};
Gdip.ImageAttributes_SetColorMatrix(attrib, matrix, Gdip.ColorMatrixFlagsDefault, Gdip.ColorAdjustTypeBitmap);
}
int gstate = 0;
if ((data.style & SWT.MIRRORED) != 0) {
gstate = Gdip.Graphics_Save(data.gdipGraphics);
Gdip.Graphics_ScaleTransform(data.gdipGraphics, -1, 1, Gdip.MatrixOrderPrepend);
Gdip.Graphics_TranslateTransform(data.gdipGraphics, - 2 * destX - destWidth, 0, Gdip.MatrixOrderPrepend);
}
Gdip.Graphics_DrawImage(data.gdipGraphics, img, rect, srcX, srcY, srcWidth, srcHeight, Gdip.UnitPixel, attrib, 0, 0);
if ((data.style & SWT.MIRRORED) != 0) {
Gdip.Graphics_Restore(data.gdipGraphics, gstate);
}
Gdip.ImageAttributes_delete(attrib);
Gdip.Bitmap_delete(img);
if (gdipImage[1] != 0) {
long hHeap = OS.GetProcessHeap ();
OS.HeapFree(hHeap, 0, gdipImage[1]);
}
return;
}
switch (srcImage.type) {
case SWT.BITMAP:
drawBitmap(srcImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple);
break;
case SWT.ICON:
drawIcon(srcImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple);
break;
}
}
void drawIcon(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple) {
int technology = OS.GetDeviceCaps(handle, OS.TECHNOLOGY);
boolean drawIcon = true;
int flags = OS.DI_NORMAL;
int offsetX = 0, offsetY = 0;
if ((OS.GetLayout(handle) & OS.LAYOUT_RTL) != 0) {
flags |= OS.DI_NOMIRROR;
/*
* Bug in Windows. For some reason, DrawIconEx() does not take
* into account the window origin when the DI_NOMIRROR and
* LAYOUT_RTL are set. The fix is to set the window origin to
* (0, 0) and offset the drawing ourselves.
*/
POINT pt = new POINT();
OS.GetWindowOrgEx(handle, pt);
offsetX = pt.x;
offsetY = pt.y;
}
/* Simple case: no stretching, entire icon */
if (simple && technology != OS.DT_RASPRINTER && drawIcon) {
if (offsetX != 0 || offsetY != 0) OS.SetWindowOrgEx(handle, 0, 0, null);
OS.DrawIconEx(handle, destX - offsetX, destY - offsetY, Image.win32_getHandle(srcImage, getZoom()), 0, 0, 0, 0, flags);
if (offsetX != 0 || offsetY != 0) OS.SetWindowOrgEx(handle, offsetX, offsetY, null);
return;
}
/* Get the icon info */
ICONINFO srcIconInfo = new ICONINFO();
OS.GetIconInfo(Image.win32_getHandle(srcImage, getZoom()), srcIconInfo);
/* Get the icon width and height */
long hBitmap = srcIconInfo.hbmColor;
if (hBitmap == 0) hBitmap = srcIconInfo.hbmMask;
BITMAP bm = new BITMAP();
OS.GetObject(hBitmap, BITMAP.sizeof, bm);
int iconWidth = bm.bmWidth, iconHeight = bm.bmHeight;
if (hBitmap == srcIconInfo.hbmMask) iconHeight /= 2;
if (simple) {
srcWidth = destWidth = iconWidth;
srcHeight = destHeight = iconHeight;
}
/* Draw the icon */
boolean failed = srcX + srcWidth > iconWidth || srcY + srcHeight > iconHeight;
if (!failed) {
simple = srcX == 0 && srcY == 0 &&
srcWidth == destWidth && srcHeight == destHeight &&
srcWidth == iconWidth && srcHeight == iconHeight;
if (!drawIcon) {
drawBitmapMask(srcImage, srcIconInfo.hbmColor, srcIconInfo.hbmMask, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, iconWidth, iconHeight, false);
} else if (simple && technology != OS.DT_RASPRINTER) {
/* Simple case: no stretching, entire icon */
if (offsetX != 0 || offsetY != 0) OS.SetWindowOrgEx(handle, 0, 0, null);
OS.DrawIconEx(handle, destX - offsetX, destY - offsetY, Image.win32_getHandle(srcImage, getZoom()), 0, 0, 0, 0, flags);
if (offsetX != 0 || offsetY != 0) OS.SetWindowOrgEx(handle, offsetX, offsetY, null);
} else {
/* Create the icon info and HDC's */
ICONINFO newIconInfo = new ICONINFO();
newIconInfo.fIcon = true;
long srcHdc = OS.CreateCompatibleDC(handle);
long dstHdc = OS.CreateCompatibleDC(handle);
/* Blt the color bitmap */
int srcColorY = srcY;
long srcColor = srcIconInfo.hbmColor;
if (srcColor == 0) {
srcColor = srcIconInfo.hbmMask;
srcColorY += iconHeight;
}
long oldSrcBitmap = OS.SelectObject(srcHdc, srcColor);
newIconInfo.hbmColor = OS.CreateCompatibleBitmap(srcHdc, destWidth, destHeight);
if (newIconInfo.hbmColor == 0) SWT.error(SWT.ERROR_NO_HANDLES);
long oldDestBitmap = OS.SelectObject(dstHdc, newIconInfo.hbmColor);
boolean stretch = !simple && (srcWidth != destWidth || srcHeight != destHeight);
if (stretch) {
OS.SetStretchBltMode(dstHdc, OS.COLORONCOLOR);
OS.StretchBlt(dstHdc, 0, 0, destWidth, destHeight, srcHdc, srcX, srcColorY, srcWidth, srcHeight, OS.SRCCOPY);
} else {
OS.BitBlt(dstHdc, 0, 0, destWidth, destHeight, srcHdc, srcX, srcColorY, OS.SRCCOPY);
}
/* Blt the mask bitmap */
OS.SelectObject(srcHdc, srcIconInfo.hbmMask);
newIconInfo.hbmMask = OS.CreateBitmap(destWidth, destHeight, 1, 1, null);
if (newIconInfo.hbmMask == 0) SWT.error(SWT.ERROR_NO_HANDLES);
OS.SelectObject(dstHdc, newIconInfo.hbmMask);
if (stretch) {
OS.StretchBlt(dstHdc, 0, 0, destWidth, destHeight, srcHdc, srcX, srcY, srcWidth, srcHeight, OS.SRCCOPY);
} else {
OS.BitBlt(dstHdc, 0, 0, destWidth, destHeight, srcHdc, srcX, srcY, OS.SRCCOPY);
}
if (technology == OS.DT_RASPRINTER) {
OS.SelectObject(srcHdc, newIconInfo.hbmColor);
OS.SelectObject(dstHdc, newIconInfo.hbmMask);
drawBitmapTransparentByClipping(srcHdc, dstHdc, 0, 0, destWidth, destHeight, destX, destY, destWidth, destHeight, true, destWidth, destHeight);
OS.SelectObject(srcHdc, oldSrcBitmap);
OS.SelectObject(dstHdc, oldDestBitmap);
} else {
OS.SelectObject(srcHdc, oldSrcBitmap);
OS.SelectObject(dstHdc, oldDestBitmap);
long hIcon = OS.CreateIconIndirect(newIconInfo);
if (hIcon == 0) SWT.error(SWT.ERROR_NO_HANDLES);
if (offsetX != 0 || offsetY != 0) OS.SetWindowOrgEx(handle, 0, 0, null);
OS.DrawIconEx(handle, destX - offsetX, destY - offsetY, hIcon, destWidth, destHeight, 0, 0, flags);
if (offsetX != 0 || offsetY != 0) OS.SetWindowOrgEx(handle, offsetX, offsetY, null);
OS.DestroyIcon(hIcon);
}
/* Destroy the new icon src and mask and hdc's*/
OS.DeleteObject(newIconInfo.hbmMask);
OS.DeleteObject(newIconInfo.hbmColor);
OS.DeleteDC(dstHdc);
OS.DeleteDC(srcHdc);
}
}
/* Free icon info */
OS.DeleteObject(srcIconInfo.hbmMask);
if (srcIconInfo.hbmColor != 0) {
OS.DeleteObject(srcIconInfo.hbmColor);
}
if (failed) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
void drawBitmap(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple) {
BITMAP bm = new BITMAP();
OS.GetObject(Image.win32_getHandle(srcImage, getZoom()), BITMAP.sizeof, bm);
int imgWidth = bm.bmWidth;
int imgHeight = bm.bmHeight;
if (simple) {
srcWidth = destWidth = imgWidth;
srcHeight = destHeight = imgHeight;
} else {
if (srcX + srcWidth > imgWidth || srcY + srcHeight > imgHeight) {
SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
simple = srcX == 0 && srcY == 0 &&
srcWidth == destWidth && destWidth == imgWidth &&
srcHeight == destHeight && destHeight == imgHeight;
}
boolean mustRestore = false;
GC memGC = srcImage.memGC;
if (memGC != null && !memGC.isDisposed()) {
memGC.flush();
mustRestore = true;
GCData data = memGC.data;
if (data.hNullBitmap != 0) {
OS.SelectObject(memGC.handle, data.hNullBitmap);
data.hNullBitmap = 0;
}
}
boolean isDib = bm.bmBits != 0;
int depth = bm.bmPlanes * bm.bmBitsPixel;
if (isDib && depth == 32) {
drawBitmapAlpha(srcImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple);
} else if (srcImage.transparentPixel != -1) {
drawBitmapTransparent(srcImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, bm, imgWidth, imgHeight);
} else {
drawBitmapColor(srcImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple);
}
if (mustRestore) {
long hOldBitmap = OS.SelectObject(memGC.handle, Image.win32_getHandle(srcImage, getZoom()));
memGC.data.hNullBitmap = hOldBitmap;
}
}
void drawBitmapAlpha(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple) {
boolean alphaBlendSupport = true;
boolean isPrinter = OS.GetDeviceCaps(handle, OS.TECHNOLOGY) == OS.DT_RASPRINTER;
int sourceAlpha = -1;
if (isPrinter) {
int caps = OS.GetDeviceCaps(handle, OS.SHADEBLENDCAPS);
if (caps != 0) {
long srcHdc = OS.CreateCompatibleDC(handle);
long oldSrcBitmap = OS.SelectObject(srcHdc, Image.win32_getHandle(srcImage, getZoom()));
long memDib = Image.createDIB(srcWidth, srcHeight, 32);
if (memDib == 0) SWT.error(SWT.ERROR_NO_HANDLES);
long memHdc = OS.CreateCompatibleDC(handle);
long oldMemBitmap = OS.SelectObject(memHdc, memDib);
BITMAP dibBM = new BITMAP();
OS.GetObject(memDib, BITMAP.sizeof, dibBM);
OS.BitBlt(memHdc, 0, 0, srcWidth, srcHeight, srcHdc, srcX, srcY, OS.SRCCOPY);
byte[] srcData = new byte[dibBM.bmWidthBytes * dibBM.bmHeight];
OS.MoveMemory(srcData, dibBM.bmBits, srcData.length);
int size = srcData.length;
sourceAlpha = srcData[3] & 0xFF;
for (int sp = 7; sp < size; sp += 4) {
int currentAlpha = srcData[sp] & 0xFF;
if (sourceAlpha != currentAlpha) {
sourceAlpha = -1;
break;
}
}
OS.SelectObject(memHdc, oldMemBitmap);
OS.DeleteDC(memHdc);
OS.DeleteObject(memDib);
OS.SelectObject(srcHdc, oldSrcBitmap);
OS.DeleteDC(srcHdc);
if (sourceAlpha != -1) {
if (sourceAlpha == 0) return;
if (sourceAlpha == 255) {
drawBitmapColor(srcImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple);
return;
}
alphaBlendSupport = (caps & OS.SB_CONST_ALPHA) != 0;
}
else {
alphaBlendSupport = (caps & OS.SB_PIXEL_ALPHA) != 0;
}
}
}
if (alphaBlendSupport) {
BLENDFUNCTION blend = new BLENDFUNCTION();
blend.BlendOp = OS.AC_SRC_OVER;
long srcHdc = OS.CreateCompatibleDC(handle);
long oldSrcBitmap = OS.SelectObject(srcHdc, Image.win32_getHandle(srcImage, getZoom()));
blend.SourceConstantAlpha = (byte)sourceAlpha;
blend.AlphaFormat = OS.AC_SRC_ALPHA;
OS.AlphaBlend(handle, destX, destY, destWidth, destHeight, srcHdc, srcX, srcY, srcWidth, srcHeight, blend);
OS.SelectObject(srcHdc, oldSrcBitmap);
OS.DeleteDC(srcHdc);
return;
}
/* Check clipping */
Rectangle rect = getClippingInPixels();
rect = rect.intersection(new Rectangle(destX, destY, destWidth, destHeight));
if (rect.isEmpty()) return;
/*
* Optimization. Recalculate src and dest rectangles so that
* only the clipping area is drawn.
*/
int sx1 = srcX + (((rect.x - destX) * srcWidth) / destWidth);
int sx2 = srcX + ((((rect.x + rect.width) - destX) * srcWidth) / destWidth);
int sy1 = srcY + (((rect.y - destY) * srcHeight) / destHeight);
int sy2 = srcY + ((((rect.y + rect.height) - destY) * srcHeight) / destHeight);
destX = rect.x;
destY = rect.y;
destWidth = rect.width;
destHeight = rect.height;
srcX = sx1;
srcY = sy1;
srcWidth = Math.max(1, sx2 - sx1);
srcHeight = Math.max(1, sy2 - sy1);
/* Create resources */
long srcHdc = OS.CreateCompatibleDC(handle);
long oldSrcBitmap = OS.SelectObject(srcHdc, Image.win32_getHandle(srcImage, getZoom()));
long memHdc = OS.CreateCompatibleDC(handle);
long memDib = Image.createDIB(Math.max(srcWidth, destWidth), Math.max(srcHeight, destHeight), 32);
if (memDib == 0) SWT.error(SWT.ERROR_NO_HANDLES);
long oldMemBitmap = OS.SelectObject(memHdc, memDib);
BITMAP dibBM = new BITMAP();
OS.GetObject(memDib, BITMAP.sizeof, dibBM);
int sizeInBytes = dibBM.bmWidthBytes * dibBM.bmHeight;
/* Get the background pixels */
OS.BitBlt(memHdc, 0, 0, destWidth, destHeight, handle, destX, destY, OS.SRCCOPY);
byte[] destData = new byte[sizeInBytes];
OS.MoveMemory(destData, dibBM.bmBits, sizeInBytes);
/* Get the foreground pixels */
OS.BitBlt(memHdc, 0, 0, srcWidth, srcHeight, srcHdc, srcX, srcY, OS.SRCCOPY);
byte[] srcData = new byte[sizeInBytes];
OS.MoveMemory(srcData, dibBM.bmBits, sizeInBytes);
/*
* When drawing to a printer, StretchBlt does not correctly stretch if
* the source and destination HDCs are the same. The workaround is to
* stretch to a temporary HDC and blit back into the original HDC.
*/
if (isPrinter) {
long tempHdc = OS.CreateCompatibleDC(handle);
long tempDib = Image.createDIB(destWidth, destHeight, 32);
if (tempDib == 0) SWT.error(SWT.ERROR_NO_HANDLES);
long oldTempBitmap = OS.SelectObject(tempHdc, tempDib);
if (!simple && (srcWidth != destWidth || srcHeight != destHeight)) {
OS.SetStretchBltMode(memHdc, OS.COLORONCOLOR);
OS.StretchBlt(tempHdc, 0, 0, destWidth, destHeight, memHdc, 0, 0, srcWidth, srcHeight, OS.SRCCOPY);
} else {
OS.BitBlt(tempHdc, 0, 0, destWidth, destHeight, memHdc, 0, 0, OS.SRCCOPY);
}
OS.BitBlt(memHdc, 0, 0, destWidth, destHeight, tempHdc, 0, 0, OS.SRCCOPY);
OS.SelectObject(tempHdc, oldTempBitmap);
OS.DeleteObject(tempDib);
OS.DeleteDC(tempHdc);
} else {
if (!simple && (srcWidth != destWidth || srcHeight != destHeight)) {
OS.SetStretchBltMode(memHdc, OS.COLORONCOLOR);
OS.StretchBlt(memHdc, 0, 0, destWidth, destHeight, memHdc, 0, 0, srcWidth, srcHeight, OS.SRCCOPY);
} else {
OS.BitBlt(memHdc, 0, 0, destWidth, destHeight, memHdc, 0, 0, OS.SRCCOPY);
}
}
OS.MoveMemory(srcData, dibBM.bmBits, sizeInBytes);
/* Compose the pixels */
final int dpinc = dibBM.bmWidthBytes - destWidth * 4;
int dp = 0;
for (int y = 0; y < destHeight; ++y) {
for (int x = 0; x < destWidth; ++x) {
int alpha = srcData[dp + 3] & 0xFF;
destData[dp ] += (srcData[dp ] & 0xFF) - (destData[dp ] & 0xFF) * alpha / 255;
destData[dp + 1] += (srcData[dp + 1] & 0xFF) - (destData[dp + 1] & 0xFF) * alpha / 255;
destData[dp + 2] += (srcData[dp + 2] & 0xFF) - (destData[dp + 2] & 0xFF) * alpha / 255;
dp += 4;
}
dp += dpinc;
}
/* Draw the composed pixels */
OS.MoveMemory(dibBM.bmBits, destData, sizeInBytes);
OS.BitBlt(handle, destX, destY, destWidth, destHeight, memHdc, 0, 0, OS.SRCCOPY);
/* Free resources */
OS.SelectObject(memHdc, oldMemBitmap);
OS.DeleteDC(memHdc);
OS.DeleteObject(memDib);
OS.SelectObject(srcHdc, oldSrcBitmap);
OS.DeleteDC(srcHdc);
}
void drawBitmapTransparentByClipping(long srcHdc, long maskHdc, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple, int imgWidth, int imgHeight) {
/* Create a clipping region from the mask */
long rgn = OS.CreateRectRgn(0, 0, 0, 0);
for (int y=0; y> 2;
transRed = (pixel & 0x7C00) >> 7;
break;
case 24:
transBlue = (pixel & 0xFF0000) >> 16;
transGreen = (pixel & 0xFF00) >> 8;
transRed = pixel & 0xFF;
break;
case 32:
transBlue = (pixel & 0xFF000000) >>> 24;
transGreen = (pixel & 0xFF0000) >> 16;
transRed = (pixel & 0xFF00) >> 8;
break;
}
}
transparentColor = transBlue << 16 | transGreen << 8 | transRed;
if (!fixPalette) srcImage.transparentColor = transparentColor;
}
if (originalColors == null) {
int mode = OS.SetStretchBltMode(handle, OS.COLORONCOLOR);
OS.TransparentBlt(handle, destX, destY, destWidth, destHeight, srcHdc, srcX, srcY, srcWidth, srcHeight, transparentColor);
OS.SetStretchBltMode(handle, mode);
} else {
/* Create the mask for the source image */
long maskHdc = OS.CreateCompatibleDC(handle);
long maskBitmap = OS.CreateBitmap(imgWidth, imgHeight, 1, 1, null);
long oldMaskBitmap = OS.SelectObject(maskHdc, maskBitmap);
OS.SetBkColor(srcHdc, transparentColor);
OS.BitBlt(maskHdc, 0, 0, imgWidth, imgHeight, srcHdc, 0, 0, OS.SRCCOPY);
if (originalColors != null) OS.SetDIBColorTable(srcHdc, 0, 1 << bm.bmBitsPixel, originalColors);
if (OS.GetDeviceCaps(handle, OS.TECHNOLOGY) == OS.DT_RASPRINTER) {
/* Most printers do not support BitBlt(), draw the source bitmap transparently using clipping */
drawBitmapTransparentByClipping(srcHdc, maskHdc, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, imgWidth, imgHeight);
} else {
/* Draw the source bitmap transparently using invert/and mask/invert */
long tempHdc = OS.CreateCompatibleDC(handle);
long tempBitmap = OS.CreateCompatibleBitmap(handle, destWidth, destHeight);
long oldTempBitmap = OS.SelectObject(tempHdc, tempBitmap);
OS.BitBlt(tempHdc, 0, 0, destWidth, destHeight, handle, destX, destY, OS.SRCCOPY);
if (!simple && (srcWidth != destWidth || srcHeight != destHeight)) {
OS.SetStretchBltMode(tempHdc, OS.COLORONCOLOR);
OS.StretchBlt(tempHdc, 0, 0, destWidth, destHeight, srcHdc, srcX, srcY, srcWidth, srcHeight, OS.SRCINVERT);
OS.StretchBlt(tempHdc, 0, 0, destWidth, destHeight, maskHdc, srcX, srcY, srcWidth, srcHeight, OS.SRCAND);
OS.StretchBlt(tempHdc, 0, 0, destWidth, destHeight, srcHdc, srcX, srcY, srcWidth, srcHeight, OS.SRCINVERT);
} else {
OS.BitBlt(tempHdc, 0, 0, destWidth, destHeight, srcHdc, srcX, srcY, OS.SRCINVERT);
OS.BitBlt(tempHdc, 0, 0, destWidth, destHeight, maskHdc, srcX, srcY, OS.SRCAND);
OS.BitBlt(tempHdc, 0, 0, destWidth, destHeight, srcHdc, srcX, srcY, OS.SRCINVERT);
}
OS.BitBlt(handle, destX, destY, destWidth, destHeight, tempHdc, 0, 0, OS.SRCCOPY);
OS.SelectObject(tempHdc, oldTempBitmap);
OS.DeleteDC(tempHdc);
OS.DeleteObject(tempBitmap);
}
OS.SelectObject(maskHdc, oldMaskBitmap);
OS.DeleteDC(maskHdc);
OS.DeleteObject(maskBitmap);
}
OS.SelectObject(srcHdc, oldSrcBitmap);
if (hBitmap != Image.win32_getHandle(srcImage, getZoom())) OS.DeleteObject(hBitmap);
OS.DeleteDC(srcHdc);
}
void drawBitmapColor(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple) {
long srcHdc = OS.CreateCompatibleDC(handle);
long oldSrcBitmap = OS.SelectObject(srcHdc, Image.win32_getHandle(srcImage, getZoom()));
int dwRop = OS.GetROP2(handle) == OS.R2_XORPEN ? OS.SRCINVERT : OS.SRCCOPY;
if (!simple && (srcWidth != destWidth || srcHeight != destHeight)) {
int mode = OS.SetStretchBltMode(handle, OS.COLORONCOLOR);
OS.StretchBlt(handle, destX, destY, destWidth, destHeight, srcHdc, srcX, srcY, srcWidth, srcHeight, dwRop);
OS.SetStretchBltMode(handle, mode);
} else {
OS.BitBlt(handle, destX, destY, destWidth, destHeight, srcHdc, srcX, srcY, dwRop);
}
OS.SelectObject(srcHdc, oldSrcBitmap);
OS.DeleteDC(srcHdc);
}
/**
* Draws a line, using the foreground color, between the points
* (x1, y1) and (x2, y2).
*
* @param x1 the first point's x coordinate
* @param y1 the first point's y coordinate
* @param x2 the second point's x coordinate
* @param y2 the second point's y coordinate
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void drawLine (int x1, int y1, int x2, int y2) {
int deviceZoom = getZoom();
x1 = DPIUtil.scaleUp (drawable, x1, deviceZoom);
x2 = DPIUtil.scaleUp (drawable, x2, deviceZoom);
y1 = DPIUtil.scaleUp (drawable, y1, deviceZoom);
y2 = DPIUtil.scaleUp (drawable, y2, deviceZoom);
drawLineInPixels(x1, y1, x2, y2);
}
void drawLineInPixels (int x1, int y1, int x2, int y2) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
checkGC(DRAW);
long gdipGraphics = data.gdipGraphics;
if (gdipGraphics != 0) {
Gdip.Graphics_TranslateTransform(gdipGraphics, data.gdipXOffset, data.gdipYOffset, Gdip.MatrixOrderPrepend);
Gdip.Graphics_DrawLine(gdipGraphics, data.gdipPen, x1, y1, x2, y2);
Gdip.Graphics_TranslateTransform(gdipGraphics, -data.gdipXOffset, -data.gdipYOffset, Gdip.MatrixOrderPrepend);
return;
}
if ((data.style & SWT.MIRRORED) != 0) {
if (data.lineWidth != 0 && data.lineWidth % 2 == 0) {
x1--;
x2--;
}
}
OS.MoveToEx (handle, x1, y1, 0);
OS.LineTo (handle, x2, y2);
if (data.lineWidth <= 1) {
OS.SetPixel (handle, x2, y2, data.foreground);
}
}
/**
* Draws the outline of an oval, using the foreground color,
* within the specified rectangular area.
*
* The result is a circle or ellipse that fits within the
* rectangle specified by the x, y,
* width, and height arguments.
*
* The oval covers an area that is width + 1
* points wide and height + 1 points tall.
*
*
* @param x the x coordinate of the upper left corner of the oval to be drawn
* @param y the y coordinate of the upper left corner of the oval to be drawn
* @param width the width of the oval to be drawn
* @param height the height of the oval to be drawn
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void drawOval (int x, int y, int width, int height) {
int deviceZoom = getZoom();
x = DPIUtil.scaleUp (drawable, x, deviceZoom);
y = DPIUtil.scaleUp (drawable, y, deviceZoom);
width = DPIUtil.scaleUp (drawable, width, deviceZoom);
height = DPIUtil.scaleUp (drawable, height, deviceZoom);
drawOvalInPixels(x, y, width, height);
}
void drawOvalInPixels (int x, int y, int width, int height) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
checkGC(DRAW);
long gdipGraphics = data.gdipGraphics;
if (gdipGraphics != 0) {
Gdip.Graphics_TranslateTransform(gdipGraphics, data.gdipXOffset, data.gdipYOffset, Gdip.MatrixOrderPrepend);
Gdip.Graphics_DrawEllipse(gdipGraphics, data.gdipPen, x, y, width, height);
Gdip.Graphics_TranslateTransform(gdipGraphics, -data.gdipXOffset, -data.gdipYOffset, Gdip.MatrixOrderPrepend);
return;
}
if ((data.style & SWT.MIRRORED) != 0) {
if (data.lineWidth != 0 && data.lineWidth % 2 == 0) x--;
}
OS.Ellipse(handle, x, y, x + width + 1, y + height + 1);
}
/**
* Draws the path described by the parameter.
*
* This operation requires the operating system's advanced
* graphics subsystem which may not be available on some
* platforms.
*
*
* @param path the path to draw
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the parameter is null
* - ERROR_INVALID_ARGUMENT - if the parameter has been disposed
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
* - ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available
*
*
* @see Path
*
* @since 3.1
*/
public void drawPath (Path path) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (path == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
long pathHandle = path.getHandle(getZoom());
if (pathHandle == 0) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
initGdip();
checkGC(DRAW);
long gdipGraphics = data.gdipGraphics;
Gdip.Graphics_TranslateTransform(gdipGraphics, data.gdipXOffset, data.gdipYOffset, Gdip.MatrixOrderPrepend);
Gdip.Graphics_DrawPath(gdipGraphics, data.gdipPen, pathHandle);
Gdip.Graphics_TranslateTransform(gdipGraphics, -data.gdipXOffset, -data.gdipYOffset, Gdip.MatrixOrderPrepend);
}
/**
* Draws an SWT logical point, using the foreground color, at the specified
* point (x, y).
*
* Note that the receiver's line attributes do not affect this
* operation.
*
*
* @param x the point's x coordinate
* @param y the point's y coordinate
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @since 3.0
*/
public void drawPoint (int x, int y) {
int deviceZoom = getZoom();
x = DPIUtil.scaleUp (drawable, x, deviceZoom);
y = DPIUtil.scaleUp (drawable, y, deviceZoom);
drawPointInPixels(x, y);
}
void drawPointInPixels (int x, int y) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (data.gdipGraphics != 0) {
checkGC(DRAW);
Gdip.Graphics_FillRectangle(data.gdipGraphics, getFgBrush(), x, y, 1, 1);
return;
}
OS.SetPixel (handle, x, y, data.foreground);
}
/**
* Draws the closed polygon which is defined by the specified array
* of integer coordinates, using the receiver's foreground color. The array
* contains alternating x and y values which are considered to represent
* points which are the vertices of the polygon. Lines are drawn between
* each consecutive pair, and between the first pair and last pair in the
* array.
*
* @param pointArray an array of alternating x and y values which are the vertices of the polygon
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT if pointArray is null
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void drawPolygon (int[] pointArray) {
if (pointArray == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
drawPolygonInPixels(DPIUtil.scaleUp(drawable, pointArray, getZoom()));
}
void drawPolygonInPixels(int[] pointArray) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
checkGC(DRAW);
long gdipGraphics = data.gdipGraphics;
if (gdipGraphics != 0) {
Gdip.Graphics_TranslateTransform(gdipGraphics, data.gdipXOffset, data.gdipYOffset, Gdip.MatrixOrderPrepend);
Gdip.Graphics_DrawPolygon(gdipGraphics, data.gdipPen, pointArray, pointArray.length / 2);
Gdip.Graphics_TranslateTransform(gdipGraphics, -data.gdipXOffset, -data.gdipYOffset, Gdip.MatrixOrderPrepend);
return;
}
if ((data.style & SWT.MIRRORED) != 0) {
if (data.lineWidth != 0 && data.lineWidth % 2 == 0) {
for (int i = 0; i < pointArray.length; i+=2) {
pointArray[i]--;
}
}
}
OS.Polygon(handle, pointArray, pointArray.length / 2);
if ((data.style & SWT.MIRRORED) != 0) {
if (data.lineWidth != 0 && data.lineWidth % 2 == 0) {
for (int i = 0; i < pointArray.length; i+=2) {
pointArray[i]++;
}
}
}
}
/**
* Draws the polyline which is defined by the specified array
* of integer coordinates, using the receiver's foreground color. The array
* contains alternating x and y values which are considered to represent
* points which are the corners of the polyline. Lines are drawn between
* each consecutive pair, but not between the first pair and last pair in
* the array.
*
* @param pointArray an array of alternating x and y values which are the corners of the polyline
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the point array is null
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void drawPolyline (int[] pointArray) {
drawPolylineInPixels(DPIUtil.scaleUp(drawable, pointArray, getZoom()));
}
void drawPolylineInPixels(int[] pointArray) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (pointArray == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
checkGC(DRAW);
long gdipGraphics = data.gdipGraphics;
if (gdipGraphics != 0) {
Gdip.Graphics_TranslateTransform(gdipGraphics, data.gdipXOffset, data.gdipYOffset, Gdip.MatrixOrderPrepend);
Gdip.Graphics_DrawLines(gdipGraphics, data.gdipPen, pointArray, pointArray.length / 2);
Gdip.Graphics_TranslateTransform(gdipGraphics, -data.gdipXOffset, -data.gdipYOffset, Gdip.MatrixOrderPrepend);
return;
}
if ((data.style & SWT.MIRRORED) != 0) {
if (data.lineWidth != 0 && data.lineWidth % 2 == 0) {
for (int i = 0; i < pointArray.length; i+=2) {
pointArray[i]--;
}
}
}
OS.Polyline(handle, pointArray, pointArray.length / 2);
int length = pointArray.length;
if (length >= 2) {
if (data.lineWidth <= 1) {
OS.SetPixel (handle, pointArray[length - 2], pointArray[length - 1], data.foreground);
}
}
if ((data.style & SWT.MIRRORED) != 0) {
if (data.lineWidth != 0 && data.lineWidth % 2 == 0) {
for (int i = 0; i < pointArray.length; i+=2) {
pointArray[i]++;
}
}
}
}
/**
* Draws the outline of the rectangle specified by the arguments,
* using the receiver's foreground color. The left and right edges
* of the rectangle are at x and x + width.
* The top and bottom edges are at y and y + height.
*
* @param x the x coordinate of the rectangle to be drawn
* @param y the y coordinate of the rectangle to be drawn
* @param width the width of the rectangle to be drawn
* @param height the height of the rectangle to be drawn
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void drawRectangle (int x, int y, int width, int height) {
int deviceZoom = getZoom();
x = DPIUtil.scaleUp (drawable, x, deviceZoom);
y = DPIUtil.scaleUp (drawable, y, deviceZoom);
width = DPIUtil.scaleUp (drawable, width, deviceZoom);
height = DPIUtil.scaleUp (drawable, height, deviceZoom);
drawRectangleInPixels(x, y, width, height);
}
void drawRectangleInPixels (int x, int y, int width, int height) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
checkGC(DRAW);
long gdipGraphics = data.gdipGraphics;
if (gdipGraphics != 0) {
if (width < 0) {
x = x + width;
width = -width;
}
if (height < 0) {
y = y + height;
height = -height;
}
Gdip.Graphics_TranslateTransform(gdipGraphics, data.gdipXOffset, data.gdipYOffset, Gdip.MatrixOrderPrepend);
Gdip.Graphics_DrawRectangle(gdipGraphics, data.gdipPen, x, y, width, height);
Gdip.Graphics_TranslateTransform(gdipGraphics, -data.gdipXOffset, -data.gdipYOffset, Gdip.MatrixOrderPrepend);
return;
}
if ((data.style & SWT.MIRRORED) != 0) {
/*
* Note that Rectangle() subtracts one pixel in MIRRORED mode when
* the pen was created with CreatePen() and its width is 0 or 1.
*/
if (data.lineWidth > 1) {
if ((data.lineWidth % 2) == 1) x++;
} else {
if (data.hPen != 0 && OS.GetObject(data.hPen, 0, 0) != OS.LOGPEN_sizeof()) {
x++;
}
}
}
OS.Rectangle (handle, x, y, x + width + 1, y + height + 1);
}
/**
* Draws the outline of the specified rectangle, using the receiver's
* foreground color. The left and right edges of the rectangle are at
* rect.x and rect.x + rect.width. The top
* and bottom edges are at rect.y and
* rect.y + rect.height.
*
* @param rect the rectangle to draw
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the rectangle is null
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void drawRectangle (Rectangle rect) {
if (rect == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
rect = DPIUtil.scaleUp(drawable, rect, getZoom());
drawRectangleInPixels(rect.x, rect.y, rect.width, rect.height);
}
/**
* Draws the outline of the round-cornered rectangle specified by
* the arguments, using the receiver's foreground color. The left and
* right edges of the rectangle are at x and x + width.
* The top and bottom edges are at y and y + height.
* The roundness of the corners is specified by the
* arcWidth and arcHeight arguments, which
* are respectively the width and height of the ellipse used to draw
* the corners.
*
* @param x the x coordinate of the rectangle to be drawn
* @param y the y coordinate of the rectangle to be drawn
* @param width the width of the rectangle to be drawn
* @param height the height of the rectangle to be drawn
* @param arcWidth the width of the arc
* @param arcHeight the height of the arc
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void drawRoundRectangle (int x, int y, int width, int height, int arcWidth, int arcHeight) {
int deviceZoom = getZoom();
x = DPIUtil.scaleUp (drawable, x, deviceZoom);
y = DPIUtil.scaleUp (drawable, y, deviceZoom);
width = DPIUtil.scaleUp (drawable, width, deviceZoom);
height = DPIUtil.scaleUp (drawable, height, deviceZoom);
arcWidth = DPIUtil.scaleUp (drawable, arcWidth, deviceZoom);
arcHeight = DPIUtil.scaleUp (drawable, arcHeight, deviceZoom);
drawRoundRectangleInPixels(x, y, width, height, arcWidth, arcHeight);
}
void drawRoundRectangleInPixels (int x, int y, int width, int height, int arcWidth, int arcHeight) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
checkGC(DRAW);
if (data.gdipGraphics != 0) {
drawRoundRectangleGdip(data.gdipGraphics, data.gdipPen, x, y, width, height, arcWidth, arcHeight);
return;
}
if ((data.style & SWT.MIRRORED) != 0) {
if (data.lineWidth != 0 && data.lineWidth % 2 == 0) x--;
}
OS.RoundRect(handle, x,y,x+width+1,y+height+1, arcWidth, arcHeight);
}
void drawRoundRectangleGdip (long gdipGraphics, long pen, int x, int y, int width, int height, int arcWidth, int arcHeight) {
int nx = x;
int ny = y;
int nw = width;
int nh = height;
int naw = arcWidth;
int nah = arcHeight;
if (nw < 0) {
nw = 0 - nw;
nx = nx - nw;
}
if (nh < 0) {
nh = 0 - nh;
ny = ny - nh;
}
if (naw < 0)
naw = 0 - naw;
if (nah < 0)
nah = 0 - nah;
Gdip.Graphics_TranslateTransform(gdipGraphics, data.gdipXOffset, data.gdipYOffset, Gdip.MatrixOrderPrepend);
if (naw == 0 || nah == 0) {
Gdip.Graphics_DrawRectangle(gdipGraphics, data.gdipPen, x, y, width, height);
} else {
long path = Gdip.GraphicsPath_new(Gdip.FillModeAlternate);
if (path == 0) SWT.error(SWT.ERROR_NO_HANDLES);
if (nw > naw) {
if (nh > nah) {
Gdip.GraphicsPath_AddArc(path, nx + nw - naw, ny, naw, nah, 0, -90);
Gdip.GraphicsPath_AddArc(path, nx, ny, naw, nah, -90, -90);
Gdip.GraphicsPath_AddArc(path, nx, ny + nh - nah, naw, nah, -180, -90);
Gdip.GraphicsPath_AddArc(path, nx + nw - naw, ny + nh - nah, naw, nah, -270, -90);
} else {
Gdip.GraphicsPath_AddArc(path, nx + nw - naw, ny, naw, nh, -270, -180);
Gdip.GraphicsPath_AddArc(path, nx, ny, naw, nh, -90, -180);
}
} else {
if (nh > nah) {
Gdip.GraphicsPath_AddArc(path, nx, ny, nw, nah, 0, -180);
Gdip.GraphicsPath_AddArc(path, nx, ny + nh - nah, nw, nah, -180, -180);
} else {
Gdip.GraphicsPath_AddArc(path, nx, ny, nw, nh, 0, 360);
}
}
Gdip.GraphicsPath_CloseFigure(path);
Gdip.Graphics_DrawPath(gdipGraphics, pen, path);
Gdip.GraphicsPath_delete(path);
}
Gdip.Graphics_TranslateTransform(gdipGraphics, -data.gdipXOffset, -data.gdipYOffset, Gdip.MatrixOrderPrepend);
}
/**
* Draws the given string, using the receiver's current font and
* foreground color. No tab expansion or carriage return processing
* will be performed. The background of the rectangular area where
* the string is being drawn will be filled with the receiver's
* background color.
*
* On Windows, {@link #drawString} and {@link #drawText} are slightly
* different, see {@link #drawString(String, int, int, boolean)} for
* explanation.
*
* @param string the string to be drawn
* @param x the x coordinate of the top left corner of the rectangular area where the string is to be drawn
* @param y the y coordinate of the top left corner of the rectangular area where the string is to be drawn
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the string is null
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void drawString (String string, int x, int y) {
int deviceZoom = getZoom();
x = DPIUtil.scaleUp(drawable, x, deviceZoom);
y = DPIUtil.scaleUp(drawable, y, deviceZoom);
drawStringInPixels(string, x, y, false);
}
/**
* Draws the given string, using the receiver's current font and
* foreground color. No tab expansion or carriage return processing
* will be performed. If isTransparent is true,
* then the background of the rectangular area where the string is being
* drawn will not be modified, otherwise it will be filled with the
* receiver's background color.
*
* On Windows, {@link #drawString} and {@link #drawText} are slightly
* different:
*
* - {@link #drawString} is faster (depends on string size)
~7x for 1-char strings
~4x for 10-char strings
~2x for 100-char strings
* - {@link #drawString} doesn't try to find a good fallback font when character doesn't have a glyph in currently selected font
*
*
* @param string the string to be drawn
* @param x the x coordinate of the top left corner of the rectangular area where the string is to be drawn
* @param y the y coordinate of the top left corner of the rectangular area where the string is to be drawn
* @param isTransparent if true the background will be transparent, otherwise it will be opaque
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the string is null
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void drawString (String string, int x, int y, boolean isTransparent) {
int deviceZoom = getZoom();
x = DPIUtil.scaleUp(drawable, x, deviceZoom);
y = DPIUtil.scaleUp(drawable, y, deviceZoom);
drawStringInPixels(string, x, y, isTransparent);
}
void drawStringInPixels (String string, int x, int y, boolean isTransparent) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (string == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
if (string.isEmpty()) return;
char[] buffer = string.toCharArray();
long gdipGraphics = data.gdipGraphics;
if (gdipGraphics != 0) {
checkGC(FONT | FOREGROUND | (isTransparent ? 0 : BACKGROUND));
drawText(gdipGraphics, string, x, y, isTransparent ? SWT.DRAW_TRANSPARENT : 0, null);
return;
}
checkGC(FONT | FOREGROUND_TEXT | BACKGROUND_TEXT);
int oldBkMode = OS.SetBkMode(handle, isTransparent ? OS.TRANSPARENT : OS.OPAQUE);
RECT rect = null;
SIZE size = null;
int flags = 0;
if ((data.style & SWT.MIRRORED) != 0) {
if (!isTransparent) {
size = new SIZE();
OS.GetTextExtentPoint32(handle, buffer, buffer.length, size);
rect = new RECT ();
rect.left = x;
rect.right = x + size.cx;
rect.top = y;
rect.bottom = y + size.cy;
flags = OS.ETO_CLIPPED;
}
x--;
}
if (OS.GetROP2(handle) != OS.R2_XORPEN) {
/* Note: The use of ExtTextOut() causes documented differences from GC.drawText() */
OS.ExtTextOut(handle, x, y, flags, rect, buffer, buffer.length, null);
} else {
int foreground = OS.GetTextColor(handle);
if (isTransparent) {
if (size == null) {
size = new SIZE();
OS.GetTextExtentPoint32(handle, buffer, buffer.length, size);
}
int width = size.cx, height = size.cy;
long hBitmap = OS.CreateCompatibleBitmap(handle, width, height);
if (hBitmap == 0) SWT.error(SWT.ERROR_NO_HANDLES);
long memDC = OS.CreateCompatibleDC(handle);
long hOldBitmap = OS.SelectObject(memDC, hBitmap);
OS.PatBlt(memDC, 0, 0, width, height, OS.BLACKNESS);
OS.SetBkMode(memDC, OS.TRANSPARENT);
OS.SetTextColor(memDC, foreground);
OS.SelectObject(memDC, OS.GetCurrentObject(handle, OS.OBJ_FONT));
OS.ExtTextOut(memDC, 0, 0, 0, null, buffer, buffer.length, null);
OS.BitBlt(handle, x, y, width, height, memDC, 0, 0, OS.SRCINVERT);
OS.SelectObject(memDC, hOldBitmap);
OS.DeleteDC(memDC);
OS.DeleteObject(hBitmap);
} else {
int background = OS.GetBkColor(handle);
OS.SetTextColor(handle, foreground ^ background);
OS.ExtTextOut(handle, x, y, flags, rect, buffer, buffer.length, null);
OS.SetTextColor(handle, foreground);
}
}
OS.SetBkMode(handle, oldBkMode);
}
/**
* Draws the given string, using the receiver's current font and
* foreground color. Tab expansion and carriage return processing
* are performed. The background of the rectangular area where
* the text is being drawn will be filled with the receiver's
* background color.
*
* On Windows, {@link #drawString} and {@link #drawText} are slightly
* different, see {@link #drawString(String, int, int, boolean)} for
* explanation.
*
* @param string the string to be drawn
* @param x the x coordinate of the top left corner of the rectangular area where the text is to be drawn
* @param y the y coordinate of the top left corner of the rectangular area where the text is to be drawn
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the string is null
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void drawText (String string, int x, int y) {
int deviceZoom = getZoom();
x = DPIUtil.scaleUp(drawable, x, deviceZoom);
y = DPIUtil.scaleUp(drawable, y, deviceZoom);
drawTextInPixels(string, x, y);
}
void drawTextInPixels (String string, int x, int y) {
drawTextInPixels(string, x, y, SWT.DRAW_DELIMITER | SWT.DRAW_TAB);
}
/**
* Draws the given string, using the receiver's current font and
* foreground color. Tab expansion and carriage return processing
* are performed. If isTransparent is true,
* then the background of the rectangular area where the text is being
* drawn will not be modified, otherwise it will be filled with the
* receiver's background color.
*
* On Windows, {@link #drawString} and {@link #drawText} are slightly
* different, see {@link #drawString(String, int, int, boolean)} for
* explanation.
*
* @param string the string to be drawn
* @param x the x coordinate of the top left corner of the rectangular area where the text is to be drawn
* @param y the y coordinate of the top left corner of the rectangular area where the text is to be drawn
* @param isTransparent if true the background will be transparent, otherwise it will be opaque
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the string is null
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void drawText (String string, int x, int y, boolean isTransparent) {
int deviceZoom = getZoom();
x = DPIUtil.scaleUp(drawable, x, deviceZoom);
y = DPIUtil.scaleUp(drawable, y, deviceZoom);
drawTextInPixels(string, x, y, isTransparent);
}
void drawTextInPixels (String string, int x, int y, boolean isTransparent) {
int flags = SWT.DRAW_DELIMITER | SWT.DRAW_TAB;
if (isTransparent) flags |= SWT.DRAW_TRANSPARENT;
drawTextInPixels(string, x, y, flags);
}
/**
* Draws the given string, using the receiver's current font and
* foreground color. Tab expansion, line delimiter and mnemonic
* processing are performed according to the specified flags. If
* flags includes DRAW_TRANSPARENT,
* then the background of the rectangular area where the text is being
* drawn will not be modified, otherwise it will be filled with the
* receiver's background color.
*
* On Windows, {@link #drawString} and {@link #drawText} are slightly
* different, see {@link #drawString(String, int, int, boolean)} for
* explanation.
*
*
* The parameter flags may be a combination of:
*
*
* - DRAW_DELIMITER
* - draw multiple lines
* - DRAW_TAB
* - expand tabs
* - DRAW_MNEMONIC
* - underline the mnemonic character
* - DRAW_TRANSPARENT
* - transparent background
*
*
* @param string the string to be drawn
* @param x the x coordinate of the top left corner of the rectangular area where the text is to be drawn
* @param y the y coordinate of the top left corner of the rectangular area where the text is to be drawn
* @param flags the flags specifying how to process the text
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the string is null
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void drawText (String string, int x, int y, int flags) {
int deviceZoom = getZoom();
x = DPIUtil.scaleUp(drawable, x, deviceZoom);
y = DPIUtil.scaleUp(drawable, y, deviceZoom);
drawTextInPixels(string, x, y, flags);
}
void drawTextInPixels (String string, int x, int y, int flags) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (string == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
if (string.isEmpty()) return;
long gdipGraphics = data.gdipGraphics;
if (gdipGraphics != 0) {
checkGC(FONT | FOREGROUND | ((flags & SWT.DRAW_TRANSPARENT) != 0 ? 0 : BACKGROUND));
drawText(gdipGraphics, string, x, y, flags, null);
return;
}
char [] buffer = string.toCharArray();
RECT rect = new RECT();
OS.SetRect(rect, x, y, 0x6FFFFFF, 0x6FFFFFF);
int uFormat = OS.DT_LEFT;
if ((flags & SWT.DRAW_DELIMITER) == 0) uFormat |= OS.DT_SINGLELINE;
if ((flags & SWT.DRAW_TAB) != 0) uFormat |= OS.DT_EXPANDTABS;
if ((flags & SWT.DRAW_MNEMONIC) == 0) uFormat |= OS.DT_NOPREFIX;
if ((flags & SWT.DRAW_MNEMONIC) != 0 && (data.uiState & OS.UISF_HIDEACCEL) != 0) {
uFormat |= OS.DT_HIDEPREFIX;
}
checkGC(FONT | FOREGROUND_TEXT | BACKGROUND_TEXT);
int oldBkMode = OS.SetBkMode(handle, (flags & SWT.DRAW_TRANSPARENT) != 0 ? OS.TRANSPARENT : OS.OPAQUE);
if (OS.GetROP2(handle) != OS.R2_XORPEN) {
/* Note: The use of DrawText() causes documented differences from GC.drawString() */
OS.DrawText(handle, buffer, buffer.length, rect, uFormat);
} else {
int foreground = OS.GetTextColor(handle);
if ((flags & SWT.DRAW_TRANSPARENT) != 0) {
OS.DrawText(handle, buffer, buffer.length, rect, uFormat | OS.DT_CALCRECT);
int width = rect.right - rect.left;
int height = rect.bottom - rect.top;
long hBitmap = OS.CreateCompatibleBitmap(handle, width, height);
if (hBitmap == 0) SWT.error(SWT.ERROR_NO_HANDLES);
long memDC = OS.CreateCompatibleDC(handle);
long hOldBitmap = OS.SelectObject(memDC, hBitmap);
OS.PatBlt(memDC, 0, 0, width, height, OS.BLACKNESS);
OS.SetBkMode(memDC, OS.TRANSPARENT);
OS.SetTextColor(memDC, foreground);
OS.SelectObject(memDC, OS.GetCurrentObject(handle, OS.OBJ_FONT));
OS.SetRect(rect, 0, 0, 0x7FFF, 0x7FFF);
OS.DrawText(memDC, buffer, buffer.length, rect, uFormat);
OS.BitBlt(handle, x, y, width, height, memDC, 0, 0, OS.SRCINVERT);
OS.SelectObject(memDC, hOldBitmap);
OS.DeleteDC(memDC);
OS.DeleteObject(hBitmap);
} else {
int background = OS.GetBkColor(handle);
OS.SetTextColor(handle, foreground ^ background);
OS.DrawText(handle, buffer, buffer.length, rect, uFormat);
OS.SetTextColor(handle, foreground);
}
}
OS.SetBkMode(handle, oldBkMode);
}
boolean useGDIP (long hdc, char[] buffer) {
short[] glyphs = new short[buffer.length];
OS.GetGlyphIndices(hdc, buffer, buffer.length, glyphs, OS.GGI_MARK_NONEXISTING_GLYPHS);
for (int i = 0; i < glyphs.length; i++) {
if (glyphs [i] == -1) {
switch (buffer[i]) {
case '\t':
case '\n':
case '\r':
break;
default:
return true;
}
}
}
return false;
}
void drawText(long gdipGraphics, String string, int x, int y, int flags, Point size) {
int length = string.length();
char[] chars = string.toCharArray();
long hdc = Gdip.Graphics_GetHDC(gdipGraphics);
long hFont = data.hGDIFont;
if (hFont == 0 && data.font != null) hFont = data.font.handle;
long oldFont = 0;
if (hFont != 0) oldFont = OS.SelectObject(hdc, hFont);
TEXTMETRIC lptm = new TEXTMETRIC();
OS.GetTextMetrics(hdc, lptm);
boolean gdip = useGDIP(hdc, chars);
if (hFont != 0) OS.SelectObject(hdc, oldFont);
Gdip.Graphics_ReleaseHDC(gdipGraphics, hdc);
if (gdip) {
drawTextGDIP(gdipGraphics, string, x, y, flags, size == null, size);
return;
}
int i = 0, start = 0, end = 0, drawX = x, drawY = y, width = 0, mnemonicIndex = -1;
if ((flags & (SWT.DRAW_DELIMITER | SWT.DRAW_TAB | SWT.DRAW_MNEMONIC)) != 0) {
int tabWidth = lptm.tmAveCharWidth * 8;
while (i < length) {
char c = chars [end++] = chars [i++];
switch (c) {
case '\t':
if ((flags & SWT.DRAW_TAB) != 0) {
int l = end - start - 1;
RectF bounds = drawText(gdipGraphics, chars, start, l, drawX, drawY, flags, mnemonicIndex, lptm, size == null);
drawX += Math.ceil(bounds.Width);
drawX = x + (((drawX - x) / tabWidth) + 1) * tabWidth;
mnemonicIndex = -1;
start = end;
}
break;
case '&':
if ((flags & SWT.DRAW_MNEMONIC) != 0) {
if (i == length) {end--; continue;}
if (chars [i] == '&') {i++; continue;}
end--;
mnemonicIndex = end - start;
}
break;
case '\r':
case '\n':
if ((flags & SWT.DRAW_DELIMITER) != 0) {
int l = end - start - 1;
if (c == '\r' && end != length && chars[end] == '\n') {
end++;
i++;
}
RectF bounds = drawText(gdipGraphics, chars, start, l, drawX, drawY, flags, mnemonicIndex, lptm, size == null);
drawY += Math.ceil(bounds.Height);
width = Math.max(width, drawX + (int)Math.ceil(bounds.Width));
drawX = x;
mnemonicIndex = -1;
start = end;
}
break;
}
}
length = end;
}
RectF bounds = drawText(gdipGraphics, chars, start, length - start, drawX, drawY, flags, mnemonicIndex, lptm, size == null);
if (size != null) {
drawY += Math.ceil(bounds.Height);
width = Math.max(width, drawX + (int)Math.ceil(bounds.Width));
size.x = width;
size.y = drawY;
}
}
RectF drawText(long gdipGraphics, char[] buffer, int start, int length, int x, int y, int flags, int mnemonicIndex, TEXTMETRIC lptm, boolean draw) {
boolean drawMnemonic = draw && mnemonicIndex != -1 && (data.uiState & OS.UISF_HIDEACCEL) == 0;
boolean needsBounds = !draw || drawMnemonic || (flags & SWT.DRAW_TRANSPARENT) == 0 || (data.style & SWT.MIRRORED) != 0 || (flags & SWT.DRAW_DELIMITER) != 0;
if (length <= 0) {
RectF bounds = null;
if (needsBounds) {
bounds = new RectF();
bounds.Height = lptm.tmHeight;
}
return bounds;
}
int nGlyphs = (length * 3 / 2) + 16;
GCP_RESULTS result = new GCP_RESULTS();
result.lStructSize = GCP_RESULTS.sizeof;
result.nGlyphs = nGlyphs;
long hHeap = OS.GetProcessHeap();
long lpDx = result.lpDx = OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, nGlyphs * 4);
long lpGlyphs = result.lpGlyphs = OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, nGlyphs * 2);
long lpOrder = 0;
int dwFlags = OS.GCP_GLYPHSHAPE | OS.GCP_REORDER | OS.GCP_LIGATE;
if (drawMnemonic) {
lpOrder = result.lpOrder = OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, nGlyphs * 4);
}
long hdc = Gdip.Graphics_GetHDC(gdipGraphics);
long hFont = data.hGDIFont;
if (hFont == 0 && data.font != null) hFont = data.font.handle;
long oldFont = 0;
if (hFont != 0) oldFont = OS.SelectObject(hdc, hFont);
if (start != 0) {
char[] temp = new char[length];
System.arraycopy(buffer, start, temp, 0, length);
buffer = temp;
}
if ((data.style & SWT.MIRRORED) != 0) OS.SetLayout(hdc, OS.GetLayout(hdc) | OS.LAYOUT_RTL);
OS.GetCharacterPlacement(hdc, buffer, length, 0, result, dwFlags);
if ((data.style & SWT.MIRRORED) != 0) OS.SetLayout(hdc, OS.GetLayout(hdc) & ~OS.LAYOUT_RTL);
if (hFont != 0) OS.SelectObject(hdc, oldFont);
Gdip.Graphics_ReleaseHDC(gdipGraphics, hdc);
nGlyphs = result.nGlyphs;
int drawX = x, drawY = y + lptm.tmAscent;
int[] dx = new int[nGlyphs];
OS.MoveMemory(dx, result.lpDx, nGlyphs * 4);
float[] points = new float[dx.length * 2];
for (int i = 0, j = 0; i < dx.length; i++) {
points[j++] = drawX;
points[j++] = drawY;
drawX += dx[i];
}
RectF bounds = null;
if (needsBounds) {
bounds = new RectF();
Gdip.Graphics_MeasureDriverString(gdipGraphics, lpGlyphs, nGlyphs, data.gdipFont, points, 0, 0, bounds);
}
if (draw) {
if ((flags & SWT.DRAW_TRANSPARENT) == 0) {
Gdip.Graphics_FillRectangle(gdipGraphics, data.gdipBrush, x, y, (int)Math.ceil(bounds.Width), (int)Math.ceil(bounds.Height));
}
int gstate = 0;
long brush = getFgBrush();
if ((data.style & SWT.MIRRORED) != 0) {
switch (Gdip.Brush_GetType(brush)) {
case Gdip.BrushTypeLinearGradient:
Gdip.LinearGradientBrush_ScaleTransform(brush, -1, 1, Gdip.MatrixOrderPrepend);
Gdip.LinearGradientBrush_TranslateTransform(brush, - 2 * x - bounds.Width, 0, Gdip.MatrixOrderPrepend);
break;
case Gdip.BrushTypeTextureFill:
Gdip.TextureBrush_ScaleTransform(brush, -1, 1, Gdip.MatrixOrderPrepend);
Gdip.TextureBrush_TranslateTransform(brush, - 2 * x - bounds.Width, 0, Gdip.MatrixOrderPrepend);
break;
}
gstate = Gdip.Graphics_Save(gdipGraphics);
Gdip.Graphics_ScaleTransform(gdipGraphics, -1, 1, Gdip.MatrixOrderPrepend);
Gdip.Graphics_TranslateTransform(gdipGraphics, - 2 * x - bounds.Width, 0, Gdip.MatrixOrderPrepend);
}
Gdip.Graphics_DrawDriverString(gdipGraphics, lpGlyphs, result.nGlyphs, data.gdipFont, brush, points, 0, 0);
if ((data.style & SWT.MIRRORED) != 0) {
switch (Gdip.Brush_GetType(brush)) {
case Gdip.BrushTypeLinearGradient:
Gdip.LinearGradientBrush_ResetTransform(brush);
break;
case Gdip.BrushTypeTextureFill:
Gdip.TextureBrush_ResetTransform(brush);
break;
}
Gdip.Graphics_Restore(gdipGraphics, gstate);
}
if (drawMnemonic) {
long pen = Gdip.Pen_new(brush, 1);
if (pen != 0) {
int[] order = new int[1];
OS.MoveMemory(order, result.lpOrder + mnemonicIndex * 4, 4);
int mnemonicLeft, mnemonicRight;
if ((data.style & SWT.MIRRORED) != 0) {
mnemonicLeft = (int)Math.ceil(bounds.Width) - (int)points[order[0] * 2] + 2 * x;
mnemonicRight = mnemonicLeft - dx[order[0]];
} else {
mnemonicLeft = (int)points[order[0] * 2];
mnemonicRight = mnemonicLeft + dx[order[0]];
}
int mnemonicY = y + lptm.tmAscent + 2;
int smoothingMode = Gdip.Graphics_GetSmoothingMode(gdipGraphics);
Gdip.Graphics_SetSmoothingMode(gdipGraphics, Gdip.SmoothingModeNone);
Gdip.Graphics_DrawLine(gdipGraphics, pen, mnemonicLeft, mnemonicY, mnemonicRight, mnemonicY);
Gdip.Graphics_SetSmoothingMode(gdipGraphics, smoothingMode);
Gdip.Pen_delete(pen);
}
}
}
if (lpOrder != 0) OS.HeapFree(hHeap, 0, lpOrder);
OS.HeapFree(hHeap, 0, lpGlyphs);
OS.HeapFree(hHeap, 0, lpDx);
return bounds;
}
void drawTextGDIP(long gdipGraphics, String string, int x, int y, int flags, boolean draw, Point size) {
boolean needsBounds = !draw || (flags & SWT.DRAW_TRANSPARENT) == 0;
char[] buffer;
int length = string.length();
if (length != 0) {
buffer = string.toCharArray();
} else {
if (draw) return;
buffer = new char[]{' '};
}
PointF pt = new PointF();
long format = Gdip.StringFormat_Clone(Gdip.StringFormat_GenericTypographic());
int formatFlags = Gdip.StringFormat_GetFormatFlags(format) | Gdip.StringFormatFlagsMeasureTrailingSpaces;
if ((data.style & SWT.MIRRORED) != 0) formatFlags |= Gdip.StringFormatFlagsDirectionRightToLeft;
Gdip.StringFormat_SetFormatFlags(format, formatFlags);
float[] tabs = (flags & SWT.DRAW_TAB) != 0 ? new float[]{measureSpace(data.gdipFont, format) * 8} : new float[1];
Gdip.StringFormat_SetTabStops(format, 0, tabs.length, tabs);
int hotkeyPrefix = (flags & SWT.DRAW_MNEMONIC) != 0 ? Gdip.HotkeyPrefixShow : Gdip.HotkeyPrefixNone;
if ((flags & SWT.DRAW_MNEMONIC) != 0 && (data.uiState & OS.UISF_HIDEACCEL) != 0) hotkeyPrefix = Gdip.HotkeyPrefixHide;
Gdip.StringFormat_SetHotkeyPrefix(format, hotkeyPrefix);
RectF bounds = null;
if (needsBounds) {
bounds = new RectF();
Gdip.Graphics_MeasureString(gdipGraphics, buffer, buffer.length, data.gdipFont, pt, format, bounds);
}
if (draw) {
if ((flags & SWT.DRAW_TRANSPARENT) == 0) {
Gdip.Graphics_FillRectangle(gdipGraphics, data.gdipBrush, x, y, (int)Math.ceil(bounds.Width), (int)Math.ceil(bounds.Height));
}
int gstate = 0;
long brush = getFgBrush();
if ((data.style & SWT.MIRRORED) != 0) {
switch (Gdip.Brush_GetType(brush)) {
case Gdip.BrushTypeLinearGradient:
Gdip.LinearGradientBrush_ScaleTransform(brush, -1, 1, Gdip.MatrixOrderPrepend);
Gdip.LinearGradientBrush_TranslateTransform(brush, - 2 * x, 0, Gdip.MatrixOrderPrepend);
break;
case Gdip.BrushTypeTextureFill:
Gdip.TextureBrush_ScaleTransform(brush, -1, 1, Gdip.MatrixOrderPrepend);
Gdip.TextureBrush_TranslateTransform(brush, - 2 * x, 0, Gdip.MatrixOrderPrepend);
break;
}
gstate = Gdip.Graphics_Save(gdipGraphics);
Gdip.Graphics_ScaleTransform(gdipGraphics, -1, 1, Gdip.MatrixOrderPrepend);
Gdip.Graphics_TranslateTransform(gdipGraphics, - 2 * x, 0, Gdip.MatrixOrderPrepend);
}
pt.X = x;
pt.Y = y;
Gdip.Graphics_DrawString(gdipGraphics, buffer, buffer.length, data.gdipFont, pt, format, brush);
if ((data.style & SWT.MIRRORED) != 0) {
switch (Gdip.Brush_GetType(brush)) {
case Gdip.BrushTypeLinearGradient:
Gdip.LinearGradientBrush_ResetTransform(brush);
break;
case Gdip.BrushTypeTextureFill:
Gdip.TextureBrush_ResetTransform(brush);
break;
}
Gdip.Graphics_Restore(gdipGraphics, gstate);
}
}
Gdip.StringFormat_delete(format);
if (length == 0) bounds.Width = 0;
if (size != null) {
size.x = (int)Math.ceil(bounds.Width);
size.y = (int)Math.ceil(bounds.Height);
}
}
/**
* Compares the argument to the receiver, and returns true
* if they represent the same object using a class
* specific comparison.
*
* @param object the object to compare with this object
* @return true if the object is the same as this object and false otherwise
*
* @see #hashCode
*/
@Override
public boolean equals (Object object) {
return (object == this) || ((object instanceof GC) && (handle == ((GC)object).handle));
}
/**
* Fills the interior of a circular or elliptical arc within
* the specified rectangular area, with the receiver's background
* color.
*
* The resulting arc begins at startAngle and extends
* for arcAngle degrees, using the current color.
* Angles are interpreted such that 0 degrees is at the 3 o'clock
* position. A positive value indicates a counter-clockwise rotation
* while a negative value indicates a clockwise rotation.
*
* The center of the arc is the center of the rectangle whose origin
* is (x, y) and whose size is specified by the
* width and height arguments.
*
* The resulting arc covers an area width + 1 points wide
* by height + 1 points tall.
*
*
* @param x the x coordinate of the upper-left corner of the arc to be filled
* @param y the y coordinate of the upper-left corner of the arc to be filled
* @param width the width of the arc to be filled
* @param height the height of the arc to be filled
* @param startAngle the beginning angle
* @param arcAngle the angular extent of the arc, relative to the start angle
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @see #drawArc
*/
public void fillArc (int x, int y, int width, int height, int startAngle, int arcAngle) {
int deviceZoom = getZoom();
x = DPIUtil.scaleUp (drawable, x, deviceZoom);
y = DPIUtil.scaleUp (drawable, y, deviceZoom);
width = DPIUtil.scaleUp (drawable, width, deviceZoom);
height = DPIUtil.scaleUp (drawable, height, deviceZoom);
fillArcInPixels(x, y, width, height, startAngle, arcAngle);
}
void fillArcInPixels (int x, int y, int width, int height, int startAngle, int arcAngle) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
checkGC(FILL);
if (width < 0) {
x = x + width;
width = -width;
}
if (height < 0) {
y = y + height;
height = -height;
}
if (width == 0 || height == 0 || arcAngle == 0) return;
long gdipGraphics = data.gdipGraphics;
if (gdipGraphics != 0) {
if (width == height) {
Gdip.Graphics_FillPie(gdipGraphics, data.gdipBrush, x, y, width, height, -startAngle, -arcAngle);
} else {
int state = Gdip.Graphics_Save(gdipGraphics);
Gdip.Graphics_TranslateTransform(gdipGraphics, x, y, Gdip.MatrixOrderPrepend);
Gdip.Graphics_ScaleTransform(gdipGraphics, width, height, Gdip.MatrixOrderPrepend);
Gdip.Graphics_FillPie(gdipGraphics, data.gdipBrush, 0, 0, 1, 1, -startAngle, -arcAngle);
Gdip.Graphics_Restore(gdipGraphics, state);
}
return;
}
if ((data.style & SWT.MIRRORED) != 0) x--;
int x1, y1, x2, y2,tmp;
boolean isNegative;
if (arcAngle >= 360 || arcAngle <= -360) {
x1 = x2 = x + width;
y1 = y2 = y + height / 2;
} else {
isNegative = arcAngle < 0;
arcAngle = arcAngle + startAngle;
if (isNegative) {
// swap angles
tmp = startAngle;
startAngle = arcAngle;
arcAngle = tmp;
}
x1 = cos(startAngle, width) + x + width/2;
y1 = -1 * sin(startAngle, height) + y + height/2;
x2 = cos(arcAngle, width) + x + width/2;
y2 = -1 * sin(arcAngle, height) + y + height/2;
}
OS.Pie(handle, x, y, x + width + 1, y + height + 1, x1, y1, x2, y2);
}
/**
* Fills the interior of the specified rectangle with a gradient
* sweeping from left to right or top to bottom progressing
* from the receiver's foreground color to its background color.
*
* @param x the x coordinate of the rectangle to be filled
* @param y the y coordinate of the rectangle to be filled
* @param width the width of the rectangle to be filled, may be negative
* (inverts direction of gradient if horizontal)
* @param height the height of the rectangle to be filled, may be negative
* (inverts direction of gradient if vertical)
* @param vertical if true sweeps from top to bottom, else
* sweeps from left to right
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @see #drawRectangle(int, int, int, int)
*/
public void fillGradientRectangle (int x, int y, int width, int height, boolean vertical) {
int deviceZoom = getZoom();
x = DPIUtil.scaleUp (drawable, x, deviceZoom);
y = DPIUtil.scaleUp (drawable, y, deviceZoom);
width = DPIUtil.scaleUp (drawable, width, deviceZoom);
height = DPIUtil.scaleUp (drawable, height, deviceZoom);
fillGradientRectangleInPixels(x, y, width, height, vertical);
}
void fillGradientRectangleInPixels(int x, int y, int width, int height, boolean vertical) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (width == 0 || height == 0) return;
RGB backgroundRGB, foregroundRGB;
backgroundRGB = getBackground().getRGB();
foregroundRGB = getForeground().getRGB();
RGB fromRGB, toRGB;
fromRGB = foregroundRGB;
toRGB = backgroundRGB;
boolean swapColors = false;
if (width < 0) {
x += width; width = -width;
if (! vertical) swapColors = true;
}
if (height < 0) {
y += height; height = -height;
if (vertical) swapColors = true;
}
if (swapColors) {
fromRGB = backgroundRGB;
toRGB = foregroundRGB;
}
if (fromRGB.equals(toRGB)) {
fillRectangleInPixels(x, y, width, height);
return;
}
if (data.gdipGraphics != 0) {
initGdip();
PointF p1= new PointF(), p2 = new PointF();
p1.X = x;
p1.Y = y;
if (vertical) {
p2.X = p1.X;
p2.Y = p1.Y + height;
} else {
p2.X = p1.X + width;
p2.Y = p1.Y;
}
int fromGpColor = (data.alpha << 24) | ((fromRGB.red & 0xFF) << 16) | ((fromRGB.green & 0xFF) << 8) | (fromRGB.blue & 0xFF);
int toGpColor = (data.alpha << 24) | ((toRGB.red & 0xFF) << 16) | ((toRGB.green & 0xFF) << 8) | (toRGB.blue & 0xFF);
long brush = Gdip.LinearGradientBrush_new(p1, p2, fromGpColor, toGpColor);
Gdip.Graphics_FillRectangle(data.gdipGraphics, brush, x, y, width, height);
Gdip.LinearGradientBrush_delete(brush);
return;
}
/*
* Bug in Windows: On Windows 2000 when the device is a printer,
* GradientFill swaps red and blue color components, causing the
* gradient to be printed in the wrong color. The fix is not to use
* GradientFill for printer devices.
*/
if (OS.GetROP2(handle) != OS.R2_XORPEN && OS.GetDeviceCaps(handle, OS.TECHNOLOGY) != OS.DT_RASPRINTER) {
final long hHeap = OS.GetProcessHeap();
final long pMesh = OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, GRADIENT_RECT.sizeof + TRIVERTEX.sizeof * 2);
if (pMesh == 0) SWT.error(SWT.ERROR_NO_HANDLES);
final long pVertex = pMesh + GRADIENT_RECT.sizeof;
GRADIENT_RECT gradientRect = new GRADIENT_RECT();
gradientRect.UpperLeft = 0;
gradientRect.LowerRight = 1;
OS.MoveMemory(pMesh, gradientRect, GRADIENT_RECT.sizeof);
TRIVERTEX trivertex = new TRIVERTEX();
trivertex.x = x;
trivertex.y = y;
trivertex.Red = (short)((fromRGB.red << 8) | fromRGB.red);
trivertex.Green = (short)((fromRGB.green << 8) | fromRGB.green);
trivertex.Blue = (short)((fromRGB.blue << 8) | fromRGB.blue);
trivertex.Alpha = -1;
OS.MoveMemory(pVertex, trivertex, TRIVERTEX.sizeof);
trivertex.x = x + width;
trivertex.y = y + height;
trivertex.Red = (short)((toRGB.red << 8) | toRGB.red);
trivertex.Green = (short)((toRGB.green << 8) | toRGB.green);
trivertex.Blue = (short)((toRGB.blue << 8) | toRGB.blue);
trivertex.Alpha = -1;
OS.MoveMemory(pVertex + TRIVERTEX.sizeof, trivertex, TRIVERTEX.sizeof);
boolean success = OS.GradientFill(handle, pVertex, 2, pMesh, 1, vertical ? OS.GRADIENT_FILL_RECT_V : OS.GRADIENT_FILL_RECT_H);
OS.HeapFree(hHeap, 0, pMesh);
if (success) return;
}
final int depth = OS.GetDeviceCaps(handle, OS.BITSPIXEL);
final int bitResolution = (depth >= 24) ? 8 : (depth >= 15) ? 5 : 0;
ImageData.fillGradientRectangle(this, data.device,
x, y, width, height, vertical, fromRGB, toRGB,
bitResolution, bitResolution, bitResolution);
}
/**
* Fills the interior of an oval, within the specified
* rectangular area, with the receiver's background
* color.
*
* @param x the x coordinate of the upper left corner of the oval to be filled
* @param y the y coordinate of the upper left corner of the oval to be filled
* @param width the width of the oval to be filled
* @param height the height of the oval to be filled
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @see #drawOval
*/
public void fillOval (int x, int y, int width, int height) {
int deviceZoom = getZoom();
x = DPIUtil.scaleUp (drawable, x, deviceZoom);
y = DPIUtil.scaleUp (drawable, y, deviceZoom);
width = DPIUtil.scaleUp (drawable, width, deviceZoom);
height = DPIUtil.scaleUp (drawable, height, deviceZoom);
fillOvalInPixels(x, y, width, height);
}
void fillOvalInPixels (int x, int y, int width, int height) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
checkGC(FILL);
if (data.gdipGraphics != 0) {
Gdip.Graphics_FillEllipse(data.gdipGraphics, data.gdipBrush, x, y, width, height);
return;
}
if ((data.style & SWT.MIRRORED) != 0) x--;
OS.Ellipse(handle, x, y, x + width + 1, y + height + 1);
}
/**
* Fills the path described by the parameter.
*
* This operation requires the operating system's advanced
* graphics subsystem which may not be available on some
* platforms.
*
*
* @param path the path to fill
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the parameter is null
* - ERROR_INVALID_ARGUMENT - if the parameter has been disposed
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
* - ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available
*
*
* @see Path
*
* @since 3.1
*/
public void fillPath (Path path) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (path == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
final long pathHandle = path.getHandle(getZoom());
if (pathHandle == 0) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
initGdip();
checkGC(FILL);
int mode = OS.GetPolyFillMode(handle) == OS.WINDING ? Gdip.FillModeWinding : Gdip.FillModeAlternate;
Gdip.GraphicsPath_SetFillMode(pathHandle, mode);
Gdip.Graphics_FillPath(data.gdipGraphics, data.gdipBrush, pathHandle);
}
/**
* Fills the interior of the closed polygon which is defined by the
* specified array of integer coordinates, using the receiver's
* background color. The array contains alternating x and y values
* which are considered to represent points which are the vertices of
* the polygon. Lines are drawn between each consecutive pair, and
* between the first pair and last pair in the array.
*
* @param pointArray an array of alternating x and y values which are the vertices of the polygon
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT if pointArray is null
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @see #drawPolygon
*/
public void fillPolygon (int[] pointArray) {
if (pointArray == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
fillPolygonInPixels(DPIUtil.scaleUp(drawable, pointArray, getZoom()));
}
void fillPolygonInPixels (int[] pointArray) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
checkGC(FILL);
if (data.gdipGraphics != 0) {
int mode = OS.GetPolyFillMode(handle) == OS.WINDING ? Gdip.FillModeWinding : Gdip.FillModeAlternate;
/*
* GC.fillPolygon method paints at wrong coordinates when GDI+ is used, the
* difference is marginal, hence applying the transformation with additional
* 0.5f pixel correction to avoid the issue seen in bug 139791
*/
float offsetCorrection = 0.5f;
Gdip.Graphics_TranslateTransform(data.gdipGraphics, data.gdipXOffset + offsetCorrection, data.gdipYOffset + offsetCorrection, Gdip.MatrixOrderPrepend);
Gdip.Graphics_FillPolygon(data.gdipGraphics, data.gdipBrush, pointArray, pointArray.length / 2, mode);
Gdip.Graphics_TranslateTransform(data.gdipGraphics, -(data.gdipXOffset + offsetCorrection), -(data.gdipYOffset + offsetCorrection), Gdip.MatrixOrderPrepend);
return;
}
if ((data.style & SWT.MIRRORED) != 0) {
for (int i = 0; i < pointArray.length; i+=2) {
pointArray[i]--;
}
}
OS.Polygon(handle, pointArray, pointArray.length / 2);
if ((data.style & SWT.MIRRORED) != 0) {
for (int i = 0; i < pointArray.length; i+=2) {
pointArray[i]++;
}
}
}
/**
* Fills the interior of the rectangle specified by the arguments,
* using the receiver's background color.
*
* @param x the x coordinate of the rectangle to be filled
* @param y the y coordinate of the rectangle to be filled
* @param width the width of the rectangle to be filled
* @param height the height of the rectangle to be filled
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @see #drawRectangle(int, int, int, int)
*/
public void fillRectangle (int x, int y, int width, int height) {
int deviceZoom = getZoom();
x = DPIUtil.scaleUp (drawable, x, deviceZoom);
y = DPIUtil.scaleUp (drawable, y, deviceZoom);
width = DPIUtil.scaleUp (drawable, width, deviceZoom);
height = DPIUtil.scaleUp (drawable, height, deviceZoom);
fillRectangleInPixels(x, y, width, height);
}
void fillRectangleInPixels (int x, int y, int width, int height) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
checkGC(FILL);
if (data.gdipGraphics != 0) {
if (width < 0) {
x = x + width;
width = -width;
}
if (height < 0) {
y = y + height;
height = -height;
}
Gdip.Graphics_FillRectangle(data.gdipGraphics, data.gdipBrush, x, y, width, height);
return;
}
int dwRop = OS.GetROP2(handle) == OS.R2_XORPEN ? OS.PATINVERT : OS.PATCOPY;
OS.PatBlt(handle, x, y, width, height, dwRop);
}
/**
* Fills the interior of the specified rectangle, using the receiver's
* background color.
*
* @param rect the rectangle to be filled
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the rectangle is null
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @see #drawRectangle(int, int, int, int)
*/
public void fillRectangle (Rectangle rect) {
if (rect == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
rect = DPIUtil.scaleUp(drawable, rect, getZoom());
fillRectangleInPixels(rect.x, rect.y, rect.width, rect.height);
}
/**
* Fills the interior of the round-cornered rectangle specified by
* the arguments, using the receiver's background color.
*
* @param x the x coordinate of the rectangle to be filled
* @param y the y coordinate of the rectangle to be filled
* @param width the width of the rectangle to be filled
* @param height the height of the rectangle to be filled
* @param arcWidth the width of the arc
* @param arcHeight the height of the arc
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @see #drawRoundRectangle
*/
public void fillRoundRectangle (int x, int y, int width, int height, int arcWidth, int arcHeight) {
int deviceZoom = getZoom();
x = DPIUtil.scaleUp (drawable, x, deviceZoom);
y = DPIUtil.scaleUp (drawable, y, deviceZoom);
width = DPIUtil.scaleUp (drawable, width, deviceZoom);
height = DPIUtil.scaleUp (drawable, height, deviceZoom);
arcWidth = DPIUtil.scaleUp (drawable, arcWidth, deviceZoom);
arcHeight = DPIUtil.scaleUp (drawable, arcHeight, deviceZoom);
fillRoundRectangleInPixels(x, y, width, height, arcWidth, arcHeight);
}
void fillRoundRectangleInPixels (int x, int y, int width, int height, int arcWidth, int arcHeight) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
checkGC(FILL);
if (data.gdipGraphics != 0) {
fillRoundRectangleGdip(data.gdipGraphics, data.gdipBrush, x, y, width, height, arcWidth, arcHeight);
return;
}
if ((data.style & SWT.MIRRORED) != 0) x--;
OS.RoundRect(handle, x,y,x+width+1,y+height+1,arcWidth, arcHeight);
}
void fillRoundRectangleGdip (long gdipGraphics, long brush, int x, int y, int width, int height, int arcWidth, int arcHeight) {
int nx = x;
int ny = y;
int nw = width;
int nh = height;
int naw = arcWidth;
int nah = arcHeight;
if (nw < 0) {
nw = 0 - nw;
nx = nx - nw;
}
if (nh < 0) {
nh = 0 - nh;
ny = ny -nh;
}
if (naw < 0)
naw = 0 - naw;
if (nah < 0)
nah = 0 - nah;
if (naw == 0 || nah == 0) {
Gdip.Graphics_FillRectangle(data.gdipGraphics, data.gdipBrush, x, y, width, height);
} else {
long path = Gdip.GraphicsPath_new(Gdip.FillModeAlternate);
if (path == 0) SWT.error(SWT.ERROR_NO_HANDLES);
if (nw > naw) {
if (nh > nah) {
Gdip.GraphicsPath_AddArc(path, nx + nw - naw, ny, naw, nah, 0, -90);
Gdip.GraphicsPath_AddArc(path, nx, ny, naw, nah, -90, -90);
Gdip.GraphicsPath_AddArc(path, nx, ny + nh - nah, naw, nah, -180, -90);
Gdip.GraphicsPath_AddArc(path, nx + nw - naw, ny + nh - nah, naw, nah, -270, -90);
} else {
Gdip.GraphicsPath_AddArc(path, nx + nw - naw, ny, naw, nh, -270, -180);
Gdip.GraphicsPath_AddArc(path, nx, ny, naw, nh, -90, -180);
}
} else {
if (nh > nah) {
Gdip.GraphicsPath_AddArc(path, nx, ny, nw, nah, 0, -180);
Gdip.GraphicsPath_AddArc(path, nx, ny + nh - nah, nw, nah, -180, -180);
} else {
Gdip.GraphicsPath_AddArc(path, nx, ny, nw, nh, 0, 360);
}
}
Gdip.GraphicsPath_CloseFigure(path);
Gdip.Graphics_FillPath(gdipGraphics, brush, path);
Gdip.GraphicsPath_delete(path);
}
}
void flush () {
if (data.gdipGraphics != 0) {
Gdip.Graphics_Flush(data.gdipGraphics, 0);
/*
* Note Flush() does not flush the output to the
* underline HDC. This is done by calling GetHDC()
* followed by ReleaseHDC().
*/
long hdc = Gdip.Graphics_GetHDC(data.gdipGraphics);
Gdip.Graphics_ReleaseHDC(data.gdipGraphics, hdc);
}
}
/**
* Returns the advance width of the specified character in
* the font which is currently selected into the receiver.
*
* The advance width is defined as the horizontal distance the cursor
* should move after printing the character in the selected font.
*
*
* @param ch the character to measure
* @return the distance in the x direction to move past the character before painting the next
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public int getAdvanceWidth(char ch) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
checkGC(FONT);
int[] width = new int[1];
OS.GetCharWidth(handle, ch, ch, width);
return width[0];
}
/**
* Returns true if receiver is using the operating system's
* advanced graphics subsystem. Otherwise, false is returned
* to indicate that normal graphics are in use.
*
* Advanced graphics may not be installed for the operating system. In this
* case, false is always returned. Some operating system have
* only one graphics subsystem. If this subsystem supports advanced graphics,
* then true is always returned. If any graphics operation such
* as alpha, antialias, patterns, interpolation, paths, clipping or transformation
* has caused the receiver to switch from regular to advanced graphics mode,
* true is returned. If the receiver has been explicitly switched
* to advanced mode and this mode is supported, true is returned.
*
*
* @return the advanced value
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @see #setAdvanced
*
* @since 3.1
*/
public boolean getAdvanced() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
return data.gdipGraphics != 0;
}
/**
* Returns the receiver's alpha value. The alpha value
* is between 0 (transparent) and 255 (opaque).
*
* @return the alpha value
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @since 3.1
*/
public int getAlpha() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
return data.alpha;
}
/**
* Returns the receiver's anti-aliasing setting value, which will be
* one of SWT.DEFAULT, SWT.OFF or
* SWT.ON. Note that this controls anti-aliasing for all
* non-text drawing operations.
*
* @return the anti-aliasing setting
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @see #getTextAntialias
*
* @since 3.1
*/
public int getAntialias() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (data.gdipGraphics == 0) return SWT.DEFAULT;
int mode = Gdip.Graphics_GetSmoothingMode(data.gdipGraphics);
switch (mode) {
case Gdip.SmoothingModeDefault: return SWT.DEFAULT;
case Gdip.SmoothingModeHighSpeed:
case Gdip.SmoothingModeNone: return SWT.OFF;
case Gdip.SmoothingModeAntiAlias:
case Gdip.SmoothingModeAntiAlias8x8:
case Gdip.SmoothingModeHighQuality: return SWT.ON;
}
return SWT.DEFAULT;
}
/**
* Returns the background color.
*
* @return the receiver's background color
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public Color getBackground() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
return Color.win32_new(data.device, data.background);
}
/**
* Returns the background pattern. The default value is
* null.
*
* @return the receiver's background pattern
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @see Pattern
*
* @since 3.1
*/
public Pattern getBackgroundPattern() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
return data.backgroundPattern;
}
/**
* Returns the width of the specified character in the font
* selected into the receiver.
*
* The width is defined as the space taken up by the actual
* character, not including the leading and tailing whitespace
* or overhang.
*
*
* @param ch the character to measure
* @return the width of the character
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public int getCharWidth(char ch) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
checkGC(FONT);
/* GetCharABCWidths only succeeds on truetype fonts */
int[] width = new int[3];
if (OS.GetCharABCWidths(handle, ch, ch, width)) {
return width[1];
}
/* It wasn't a truetype font */
TEXTMETRIC lptm = new TEXTMETRIC();
OS.GetTextMetrics(handle, lptm);
SIZE size = new SIZE();
OS.GetTextExtentPoint32(handle, new char[]{ch}, 1, size);
return size.cx - lptm.tmOverhang;
}
/**
* Returns the bounding rectangle of the receiver's clipping
* region. If no clipping region is set, the return value
* will be a rectangle which covers the entire bounds of the
* object the receiver is drawing on.
*
* @return the bounding rectangle of the clipping region
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public Rectangle getClipping () {
return DPIUtil.scaleDown(drawable, getClippingInPixels(), getZoom());
}
Rectangle getClippingInPixels() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
long gdipGraphics = data.gdipGraphics;
if (gdipGraphics != 0) {
Rect rect = new Rect();
Gdip.Graphics_SetPixelOffsetMode(gdipGraphics, Gdip.PixelOffsetModeNone);
Gdip.Graphics_GetVisibleClipBounds(gdipGraphics, rect);
Gdip.Graphics_SetPixelOffsetMode(gdipGraphics, Gdip.PixelOffsetModeHalf);
return new Rectangle(rect.X, rect.Y, rect.Width, rect.Height);
}
RECT rect = new RECT();
OS.GetClipBox(handle, rect);
return new Rectangle(rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top);
}
/**
* Sets the region managed by the argument to the current
* clipping region of the receiver.
*
* @param region the region to fill with the clipping region
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the region is null
* - ERROR_INVALID_ARGUMENT - if the region is disposed
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void getClipping (Region region) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (region == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
if (region.isDisposed()) SWT.error (SWT.ERROR_INVALID_ARGUMENT);
long gdipGraphics = data.gdipGraphics;
if (gdipGraphics != 0) {
long rgn = Gdip.Region_new();
Gdip.Graphics_GetClip(data.gdipGraphics, rgn);
if (Gdip.Region_IsInfinite(rgn, gdipGraphics)) {
Rect rect = new Rect();
Gdip.Graphics_SetPixelOffsetMode(gdipGraphics, Gdip.PixelOffsetModeNone);
Gdip.Graphics_GetVisibleClipBounds(gdipGraphics, rect);
Gdip.Graphics_SetPixelOffsetMode(gdipGraphics, Gdip.PixelOffsetModeHalf);
OS.SetRectRgn(Region.win32_getHandle(region, getZoom()), rect.X, rect.Y, rect.X + rect.Width, rect.Y + rect.Height);
} else {
long matrix = Gdip.Matrix_new(1, 0, 0, 1, 0, 0);
long identity = Gdip.Matrix_new(1, 0, 0, 1, 0, 0);
Gdip.Graphics_GetTransform(gdipGraphics, matrix);
Gdip.Graphics_SetTransform(gdipGraphics, identity);
long hRgn = Gdip.Region_GetHRGN(rgn, data.gdipGraphics);
Gdip.Graphics_SetTransform(gdipGraphics, matrix);
Gdip.Matrix_delete(identity);
Gdip.Matrix_delete(matrix);
POINT pt = new POINT ();
OS.GetWindowOrgEx (handle, pt);
OS.OffsetRgn (hRgn, pt.x, pt.y);
OS.CombineRgn(Region.win32_getHandle(region, getZoom()), hRgn, 0, OS.RGN_COPY);
OS.DeleteObject(hRgn);
}
Gdip.Region_delete(rgn);
return;
}
POINT pt = new POINT ();
OS.GetWindowOrgEx (handle, pt);
int result = OS.GetClipRgn (handle, Region.win32_getHandle(region, getZoom()));
if (result != 1) {
RECT rect = new RECT();
OS.GetClipBox(handle, rect);
OS.SetRectRgn(Region.win32_getHandle(region, getZoom()), rect.left, rect.top, rect.right, rect.bottom);
} else {
OS.OffsetRgn (Region.win32_getHandle(region, getZoom()), pt.x, pt.y);
}
long metaRgn = OS.CreateRectRgn (0, 0, 0, 0);
if (OS.GetMetaRgn (handle, metaRgn) != 0) {
OS.OffsetRgn (metaRgn, pt.x, pt.y);
OS.CombineRgn (Region.win32_getHandle(region, getZoom()), metaRgn, Region.win32_getHandle(region, getZoom()), OS.RGN_AND);
}
OS.DeleteObject(metaRgn);
long hwnd = data.hwnd;
if (hwnd != 0 && data.ps != null) {
long sysRgn = OS.CreateRectRgn (0, 0, 0, 0);
if (OS.GetRandomRgn (handle, sysRgn, OS.SYSRGN) == 1) {
if ((OS.GetLayout(handle) & OS.LAYOUT_RTL) != 0) {
int nBytes = OS.GetRegionData (sysRgn, 0, null);
int [] lpRgnData = new int [nBytes / 4];
OS.GetRegionData (sysRgn, nBytes, lpRgnData);
long newSysRgn = OS.ExtCreateRegion(new float [] {-1, 0, 0, 1, 0, 0}, nBytes, lpRgnData);
OS.DeleteObject(sysRgn);
sysRgn = newSysRgn;
}
OS.MapWindowPoints (0, hwnd, pt, 1);
OS.OffsetRgn (sysRgn, pt.x, pt.y);
OS.CombineRgn (Region.win32_getHandle(region, getZoom()), sysRgn, Region.win32_getHandle(region, getZoom()), OS.RGN_AND);
}
OS.DeleteObject(sysRgn);
}
}
long getFgBrush() {
return data.foregroundPattern != null ? data.foregroundPattern.getHandle(getZoom()) : data.gdipFgBrush;
}
/**
* Returns the receiver's fill rule, which will be one of
* SWT.FILL_EVEN_ODD or SWT.FILL_WINDING.
*
* @return the receiver's fill rule
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @since 3.1
*/
public int getFillRule() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
return OS.GetPolyFillMode(handle) == OS.WINDING ? SWT.FILL_WINDING : SWT.FILL_EVEN_ODD;
}
/**
* Returns the font currently being used by the receiver
* to draw and measure text.
*
* @return the receiver's font
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public Font getFont () {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
return data.font;
}
/**
* Returns a FontMetrics which contains information
* about the font currently being used by the receiver
* to draw and measure text.
*
* @return font metrics for the receiver's font
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public FontMetrics getFontMetrics() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
checkGC(FONT);
TEXTMETRIC lptm = new TEXTMETRIC();
OS.GetTextMetrics(handle, lptm);
return FontMetrics.win32_new(lptm, data.nativeZoom);
}
/**
* Returns the receiver's foreground color.
*
* @return the color used for drawing foreground things
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public Color getForeground() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
return Color.win32_new(data.device, data.foreground);
}
/**
* Returns the foreground pattern. The default value is
* null.
*
* @return the receiver's foreground pattern
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @see Pattern
*
* @since 3.1
*/
public Pattern getForegroundPattern() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
return data.foregroundPattern;
}
/**
* Returns the GCData.
*
* IMPORTANT: This method is not part of the public
* API for GC. It is marked public only so that it
* can be shared within the packages provided by SWT. It is not
* available on all platforms, and should never be called from
* application code.
*
*
* @return the receiver's GCData
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @see GCData
*
* @noreference This method is not intended to be referenced by clients.
*
* @since 3.2
*/
public GCData getGCData() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
return data;
}
/**
* Returns the receiver's interpolation setting, which will be one of
* SWT.DEFAULT, SWT.NONE,
* SWT.LOW or SWT.HIGH.
*
* @return the receiver's interpolation setting
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @since 3.1
*/
public int getInterpolation() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (data.gdipGraphics == 0) return SWT.DEFAULT;
int mode = Gdip.Graphics_GetInterpolationMode(data.gdipGraphics);
switch (mode) {
case Gdip.InterpolationModeDefault: return SWT.DEFAULT;
case Gdip.InterpolationModeNearestNeighbor: return SWT.NONE;
case Gdip.InterpolationModeBilinear:
case Gdip.InterpolationModeLowQuality: return SWT.LOW;
case Gdip.InterpolationModeBicubic:
case Gdip.InterpolationModeHighQualityBilinear:
case Gdip.InterpolationModeHighQualityBicubic:
case Gdip.InterpolationModeHighQuality: return SWT.HIGH;
}
return SWT.DEFAULT;
}
/**
* Returns the receiver's line attributes.
*
* @return the line attributes used for drawing lines
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @since 3.3
*/
public LineAttributes getLineAttributes () {
LineAttributes attributes = getLineAttributesInPixels();
int deviceZoom = getZoom();
attributes.width = DPIUtil.scaleDown(drawable, attributes.width, deviceZoom);
if(attributes.dash != null) {
attributes.dash = DPIUtil.scaleDown(drawable, attributes.dash, deviceZoom);
}
return attributes;
}
LineAttributes getLineAttributesInPixels () {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
float[] dashes = null;
if (data.lineDashes != null) {
dashes = new float[data.lineDashes.length];
System.arraycopy(data.lineDashes, 0, dashes, 0, dashes.length);
}
return new LineAttributes(data.lineWidth, data.lineCap, data.lineJoin, data.lineStyle, dashes, data.lineDashesOffset, data.lineMiterLimit);
}
/**
* Returns the receiver's line cap style, which will be one
* of the constants SWT.CAP_FLAT, SWT.CAP_ROUND,
* or SWT.CAP_SQUARE.
*
* @return the cap style used for drawing lines
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @since 3.1
*/
public int getLineCap() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
return data.lineCap;
}
/**
* Returns the receiver's line dash style. The default value is
* null.
*
* @return the line dash style used for drawing lines
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @since 3.1
*/
public int[] getLineDash() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (data.lineDashes == null) return null;
int[] lineDashes = new int[data.lineDashes.length];
int deviceZoom = getZoom();
for (int i = 0; i < lineDashes.length; i++) {
lineDashes[i] = DPIUtil.scaleDown(drawable, (int)data.lineDashes[i], deviceZoom);
}
return lineDashes;
}
/**
* Returns the receiver's line join style, which will be one
* of the constants SWT.JOIN_MITER, SWT.JOIN_ROUND,
* or SWT.JOIN_BEVEL.
*
* @return the join style used for drawing lines
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @since 3.1
*/
public int getLineJoin() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
return data.lineJoin;
}
/**
* Returns the receiver's line style, which will be one
* of the constants SWT.LINE_SOLID, SWT.LINE_DASH,
* SWT.LINE_DOT, SWT.LINE_DASHDOT or
* SWT.LINE_DASHDOTDOT.
*
* @return the style used for drawing lines
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public int getLineStyle() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
return data.lineStyle;
}
/**
* Returns the width that will be used when drawing lines
* for all of the figure drawing operations (that is,
* drawLine, drawRectangle,
* drawPolyline, and so forth.
*
* @return the receiver's line width
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public int getLineWidth () {
return DPIUtil.scaleDown(drawable, getLineWidthInPixels(), getZoom());
}
int getLineWidthInPixels() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
return (int)data.lineWidth;
}
/**
* Returns the receiver's style information.
*
* Note that the value which is returned by this method may
* not match the value which was provided to the constructor
* when the receiver was created. This can occur when the underlying
* operating system does not support a particular combination of
* requested styles.
*
*
* @return the style bits
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @since 2.1.2
*/
public int getStyle () {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
return data.style;
}
/**
* Returns the receiver's text drawing anti-aliasing setting value,
* which will be one of SWT.DEFAULT, SWT.OFF or
* SWT.ON. Note that this controls anti-aliasing
* only for text drawing operations.
*
* @return the anti-aliasing setting
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @see #getAntialias
*
* @since 3.1
*/
public int getTextAntialias() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (data.gdipGraphics == 0) return SWT.DEFAULT;
int mode = Gdip.Graphics_GetTextRenderingHint(data.gdipGraphics);
switch (mode) {
case Gdip.TextRenderingHintSystemDefault: return SWT.DEFAULT;
case Gdip.TextRenderingHintSingleBitPerPixel:
case Gdip.TextRenderingHintSingleBitPerPixelGridFit: return SWT.OFF;
case Gdip.TextRenderingHintAntiAlias:
case Gdip.TextRenderingHintAntiAliasGridFit:
case Gdip.TextRenderingHintClearTypeGridFit: return SWT.ON;
}
return SWT.DEFAULT;
}
/**
* Sets the parameter to the transform that is currently being
* used by the receiver.
*
* @param transform the destination to copy the transform into
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the parameter is null
* - ERROR_INVALID_ARGUMENT - if the parameter has been disposed
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @see Transform
*
* @since 3.1
*/
public void getTransform(Transform transform) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (transform == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
if (transform.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
long gdipGraphics = data.gdipGraphics;
if (gdipGraphics != 0) {
Gdip.Graphics_GetTransform(gdipGraphics, transform.getHandle(getZoom()));
long identity = identity();
Gdip.Matrix_Invert(identity);
Gdip.Matrix_Multiply(transform.getHandle(getZoom()), identity, Gdip.MatrixOrderAppend);
Gdip.Matrix_delete(identity);
} else {
transform.setElements(1, 0, 0, 1, 0, 0);
}
}
/**
* Returns true if this GC is drawing in the mode
* where the resulting color in the destination is the
* exclusive or of the color values in the source
* and the destination, and false if it is
* drawing in the mode where the destination color is being
* replaced with the source color value.
*
* @return true true if the receiver is in XOR mode, and false otherwise
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public boolean getXORMode() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
return OS.GetROP2(handle) == OS.R2_XORPEN;
}
void initGdip() {
data.device.checkGDIP();
long gdipGraphics = data.gdipGraphics;
if (gdipGraphics != 0) return;
/*
* Feature in GDI+. The GDI+ clipping set with Graphics->SetClip()
* is always intersected with the GDI clipping at the time the
* GDI+ graphics is created. This means that the clipping
* cannot be reset. The fix is to clear the clipping before
* the GDI+ graphics is created and reset it afterwards.
*/
long hRgn = OS.CreateRectRgn(0, 0, 0, 0);
int result = OS.GetClipRgn(handle, hRgn);
POINT pt = new POINT ();
OS.GetWindowOrgEx (handle, pt);
OS.OffsetRgn (hRgn, pt.x, pt.y);
OS.SelectClipRgn(handle, 0);
/*
* Bug in GDI+. GDI+ does not work when the HDC layout is RTL. There
* are many issues like pixel corruption, but the most visible problem
* is that it does not have an effect when drawing to an bitmap. The
* fix is to clear the bit before creating the GDI+ graphics and install
* a mirroring matrix ourselves.
*/
if ((data.style & SWT.MIRRORED) != 0) {
OS.SetLayout(handle, OS.GetLayout(handle) & ~OS.LAYOUT_RTL);
}
gdipGraphics = data.gdipGraphics = Gdip.Graphics_new(handle);
if (gdipGraphics == 0) SWT.error(SWT.ERROR_NO_HANDLES);
Gdip.Graphics_SetPageUnit(gdipGraphics, Gdip.UnitPixel);
Gdip.Graphics_SetPixelOffsetMode(gdipGraphics, Gdip.PixelOffsetModeHalf);
if ((data.style & SWT.MIRRORED) != 0) {
long matrix = identity();
Gdip.Graphics_SetTransform(gdipGraphics, matrix);
Gdip.Matrix_delete(matrix);
}
if (result == 1) setClipping(hRgn);
OS.DeleteObject(hRgn);
data.state = 0;
if (data.hPen != 0) {
OS.SelectObject(handle, OS.GetStockObject(OS.NULL_PEN));
OS.DeleteObject(data.hPen);
data.hPen = 0;
}
if (data.hBrush != 0) {
OS.SelectObject(handle, OS.GetStockObject(OS.NULL_BRUSH));
OS.DeleteObject(data.hBrush);
data.hBrush = 0;
}
}
long identity() {
if ((data.style & SWT.MIRRORED) != 0) {
int width = 0;
int technology = OS.GetDeviceCaps(handle, OS.TECHNOLOGY);
if (technology == OS.DT_RASPRINTER) {
width = OS.GetDeviceCaps(handle, OS.PHYSICALWIDTH);
} else {
Image image = data.image;
if (image != null) {
BITMAP bm = new BITMAP();
OS.GetObject(Image.win32_getHandle(image, getZoom()), BITMAP.sizeof, bm);
width = bm.bmWidth;
} else {
long hwnd = OS.WindowFromDC(handle);
if (hwnd != 0) {
RECT rect = new RECT();
OS.GetClientRect(hwnd, rect);
width = rect.right - rect.left;
} else {
long hBitmap = OS.GetCurrentObject(handle, OS.OBJ_BITMAP);
BITMAP bm = new BITMAP();
OS.GetObject(hBitmap, BITMAP.sizeof, bm);
width = bm.bmWidth;
}
}
}
POINT pt = new POINT ();
OS.GetWindowOrgEx (handle, pt);
return Gdip.Matrix_new(-1, 0, 0, 1, width + 2 * pt.x, 0);
}
return Gdip.Matrix_new(1, 0, 0, 1, 0, 0);
}
void init(Drawable drawable, GCData data, long hDC) {
int foreground = data.foreground;
if (foreground != -1) {
data.state &= ~(FOREGROUND | FOREGROUND_TEXT | PEN);
} else {
data.foreground = OS.GetTextColor(hDC);
}
int background = data.background;
if (background != -1) {
data.state &= ~(BACKGROUND | BACKGROUND_TEXT | BRUSH);
} else {
data.background = OS.GetBkColor(hDC);
}
data.state &= ~(NULL_BRUSH | NULL_PEN);
Font font = data.font;
if (font != null) {
data.state &= ~FONT;
} else {
data.font = Font.win32_new(device, OS.GetCurrentObject(hDC, OS.OBJ_FONT));
}
if (data.nativeZoom == 0) {
data.nativeZoom = extractZoom(hDC);
}
Image image = data.image;
if (image != null) {
data.hNullBitmap = OS.SelectObject(hDC, Image.win32_getHandle(image, DPIUtil.getZoomForAutoscaleProperty(data.nativeZoom)));
image.memGC = this;
}
int layout = data.layout;
if (layout != -1) {
int flags = OS.GetLayout(hDC);
if ((flags & OS.LAYOUT_RTL) != (layout & OS.LAYOUT_RTL)) {
flags &= ~OS.LAYOUT_RTL;
OS.SetLayout(hDC, flags | layout);
}
if ((data.style & SWT.RIGHT_TO_LEFT) != 0) data.style |= SWT.MIRRORED;
}
this.drawable = drawable;
this.data = data;
handle = hDC;
}
private static int extractZoom(long hDC) {
long hwnd = OS.WindowFromDC(hDC);
long parentWindow = OS.GetAncestor(hwnd, OS.GA_ROOT);
long monitorParent = OS.MonitorFromWindow(parentWindow, OS.MONITOR_DEFAULTTONEAREST);
int [] dpiX = new int[1];
int [] dpiY = new int[1];
int result = OS.GetDpiForMonitor (monitorParent, OS.MDT_EFFECTIVE_DPI, dpiX, dpiY);
return (result == OS.S_OK) ? DPIUtil.mapDPIToZoom (dpiX[0]) : DPIUtil.getNativeDeviceZoom();
}
/**
* Returns an integer hash code for the receiver. Any two
* objects that return true when passed to
* equals must return the same value for this
* method.
*
* @return the receiver's hash
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @see #equals
*/
@Override
public int hashCode () {
return (int)handle;
}
/**
* Returns true if the receiver has a clipping
* region set into it, and false otherwise.
* If this method returns false, the receiver will draw on all
* available space in the destination. If it returns true,
* it will draw only in the area that is covered by the region
* that can be accessed with getClipping(region).
*
* @return true if the GC has a clipping region, and false otherwise
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public boolean isClipped() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
long gdipGraphics = data.gdipGraphics;
if (gdipGraphics != 0) {
long rgn = Gdip.Region_new();
Gdip.Graphics_GetClip(data.gdipGraphics, rgn);
boolean isInfinite = Gdip.Region_IsInfinite(rgn, gdipGraphics);
Gdip.Region_delete(rgn);
return !isInfinite;
}
long region = OS.CreateRectRgn(0, 0, 0, 0);
int result = OS.GetClipRgn(handle, region);
OS.DeleteObject(region);
return result > 0;
}
/**
* Returns true if the GC has been disposed,
* and false otherwise.
*
* This method gets the dispose state for the GC.
* When a GC has been disposed, it is an error to
* invoke any other method (except {@link #dispose()}) using the GC.
*
* @return true when the GC is disposed and false otherwise
*/
@Override
public boolean isDisposed() {
return handle == 0;
}
float measureSpace(long font, long format) {
PointF pt = new PointF();
RectF bounds = new RectF();
Gdip.Graphics_MeasureString(data.gdipGraphics, new char[]{' '}, 1, font, pt, format, bounds);
return bounds.Width;
}
/**
* Sets the receiver to always use the operating system's advanced graphics
* subsystem for all graphics operations if the argument is true.
* If the argument is false, the advanced graphics subsystem is
* no longer used, advanced graphics state is cleared and the normal graphics
* subsystem is used from now on.
*
* Normally, the advanced graphics subsystem is invoked automatically when
* any one of the alpha, antialias, patterns, interpolation, paths, clipping
* or transformation operations in the receiver is requested. When the receiver
* is switched into advanced mode, the advanced graphics subsystem performs both
* advanced and normal graphics operations. Because the two subsystems are
* different, their output may differ. Switching to advanced graphics before
* any graphics operations are performed ensures that the output is consistent.
*
* Advanced graphics may not be installed for the operating system. In this
* case, this operation does nothing. Some operating system have only one
* graphics subsystem, so switching from normal to advanced graphics does
* nothing. However, switching from advanced to normal graphics will always
* clear the advanced graphics state, even for operating systems that have
* only one graphics subsystem.
*
*
* @param advanced the new advanced graphics state
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @see #setAlpha
* @see #setAntialias
* @see #setBackgroundPattern
* @see #setClipping(Path)
* @see #setForegroundPattern
* @see #setLineAttributes
* @see #setInterpolation
* @see #setTextAntialias
* @see #setTransform
* @see #getAdvanced
*
* @since 3.1
*/
public void setAdvanced(boolean advanced) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (advanced && data.gdipGraphics != 0) return;
if (advanced) {
initGdip();
} else {
disposeGdip();
data.alpha = 0xFF;
data.backgroundPattern = data.foregroundPattern = null;
data.state = 0;
setClipping(0);
if ((data.style & SWT.MIRRORED) != 0) {
OS.SetLayout(handle, OS.GetLayout(handle) | OS.LAYOUT_RTL);
}
}
}
/**
* Sets the receiver's anti-aliasing value to the parameter,
* which must be one of SWT.DEFAULT, SWT.OFF
* or SWT.ON. Note that this controls anti-aliasing for all
* non-text drawing operations.
*
* This operation requires the operating system's advanced
* graphics subsystem which may not be available on some
* platforms.
*
*
* @param antialias the anti-aliasing setting
*
* @exception IllegalArgumentException
* - ERROR_INVALID_ARGUMENT - if the parameter is not one of
SWT.DEFAULT,
* SWT.OFF or SWT.ON
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
* - ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available
*
*
* @see #getAdvanced
* @see #setAdvanced
* @see #setTextAntialias
*
* @since 3.1
*/
public void setAntialias(int antialias) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (data.gdipGraphics == 0 && antialias == SWT.DEFAULT) return;
int mode = 0;
switch (antialias) {
case SWT.DEFAULT:
mode = Gdip.SmoothingModeDefault;
break;
case SWT.OFF:
mode = Gdip.SmoothingModeNone;
break;
case SWT.ON:
mode = Gdip.SmoothingModeAntiAlias;
break;
default:
SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
initGdip();
Gdip.Graphics_SetSmoothingMode(data.gdipGraphics, mode);
}
/**
* Sets the receiver's alpha value which must be
* between 0 (transparent) and 255 (opaque).
*
* This operation requires the operating system's advanced
* graphics subsystem which may not be available on some
* platforms.
*
* @param alpha the alpha value
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
* - ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available
*
*
* @see #getAdvanced
* @see #setAdvanced
*
* @since 3.1
*/
public void setAlpha(int alpha) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (data.gdipGraphics == 0 && (alpha & 0xFF) == 0xFF) return;
initGdip();
data.alpha = alpha & 0xFF;
data.state &= ~(BACKGROUND | FOREGROUND);
if(data.gdipFgPatternBrushAlpha != 0) {
Gdip.TextureBrush_delete(data.gdipFgPatternBrushAlpha);
data.gdipFgPatternBrushAlpha = 0;
}
if(data.gdipBgPatternBrushAlpha != 0) {
Gdip.TextureBrush_delete(data.gdipBgPatternBrushAlpha);
data.gdipBgPatternBrushAlpha = 0;
}
}
/**
* Sets the background color. The background color is used
* for fill operations and as the background color when text
* is drawn.
*
* @param color the new background color for the receiver
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the color is null
* - ERROR_INVALID_ARGUMENT - if the color has been disposed
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void setBackground (Color color) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (color == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
if (color.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
if (data.backgroundPattern == null && data.background == color.handle) return;
data.backgroundPattern = null;
data.background = color.handle;
data.state &= ~(BACKGROUND | BACKGROUND_TEXT);
}
/**
* Sets the background pattern. The default value is null.
*
* This operation requires the operating system's advanced
* graphics subsystem which may not be available on some
* platforms.
*
*
* @param pattern the new background pattern
*
* @exception IllegalArgumentException
* - ERROR_INVALID_ARGUMENT - if the parameter has been disposed
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
* - ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available
*
*
* @see Pattern
* @see #getAdvanced
* @see #setAdvanced
*
* @since 3.1
*/
public void setBackgroundPattern (Pattern pattern) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (pattern != null && pattern.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
if (data.gdipGraphics == 0 && pattern == null) return;
initGdip();
if (data.backgroundPattern == pattern) return;
data.backgroundPattern = pattern;
data.state &= ~BACKGROUND;
if(data.gdipBgPatternBrushAlpha != 0) {
Gdip.TextureBrush_delete(data.gdipBgPatternBrushAlpha);
data.gdipBgPatternBrushAlpha = 0;
}
}
void setClipping(long clipRgn) {
long hRgn = clipRgn;
long gdipGraphics = data.gdipGraphics;
if (gdipGraphics != 0) {
if (hRgn != 0) {
long region = Gdip.Region_new(hRgn);
Gdip.Graphics_SetClip(gdipGraphics, region, Gdip.CombineModeReplace);
Gdip.Region_delete(region);
} else {
Gdip.Graphics_ResetClip(gdipGraphics);
}
} else {
POINT pt = null;
if (hRgn != 0) {
pt = new POINT();
OS.GetWindowOrgEx(handle, pt);
OS.OffsetRgn(hRgn, -pt.x, -pt.y);
}
OS.SelectClipRgn(handle, hRgn);
if (hRgn != 0) {
OS.OffsetRgn(hRgn, pt.x, pt.y);
}
}
}
/**
* Sets the area of the receiver which can be changed
* by drawing operations to the rectangular area specified
* by the arguments.
*
* @param x the x coordinate of the clipping rectangle
* @param y the y coordinate of the clipping rectangle
* @param width the width of the clipping rectangle
* @param height the height of the clipping rectangle
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void setClipping (int x, int y, int width, int height) {
int deviceZoom = getZoom();
x = DPIUtil.scaleUp(drawable, x, deviceZoom);
y = DPIUtil.scaleUp(drawable, y, deviceZoom);
width = DPIUtil.scaleUp(drawable, width, deviceZoom);
height = DPIUtil.scaleUp(drawable, height, deviceZoom);
setClippingInPixels(x, y, width, height);
}
void setClippingInPixels (int x, int y, int width, int height) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
long hRgn = OS.CreateRectRgn(x, y, x + width, y + height);
setClipping(hRgn);
OS.DeleteObject(hRgn);
}
/**
* Sets the area of the receiver which can be changed
* by drawing operations to the path specified
* by the argument.
*
* This operation requires the operating system's advanced
* graphics subsystem which may not be available on some
* platforms.
*
*
* @param path the clipping path.
*
* @exception IllegalArgumentException
* - ERROR_INVALID_ARGUMENT - if the path has been disposed
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
* - ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available
*
*
* @see Path
* @see #getAdvanced
* @see #setAdvanced
*
* @since 3.1
*/
public void setClipping (Path path) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (path != null && path.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
setClipping(0);
if (path != null) {
initGdip();
int mode = OS.GetPolyFillMode(handle) == OS.WINDING ? Gdip.FillModeWinding : Gdip.FillModeAlternate;
final long pathHandle = path.getHandle(getZoom());
Gdip.GraphicsPath_SetFillMode(pathHandle, mode);
Gdip.Graphics_SetClipPath(data.gdipGraphics, pathHandle);
}
}
/**
* Sets the area of the receiver which can be changed
* by drawing operations to the rectangular area specified
* by the argument. Specifying null for the
* rectangle reverts the receiver's clipping area to its
* original value.
*
* @param rect the clipping rectangle or null
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void setClipping (Rectangle rect) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (rect == null) {
setClipping(0);
}
else {
rect = DPIUtil.scaleUp(drawable, rect, getZoom());
setClippingInPixels(rect.x, rect.y, rect.width, rect.height);
}
}
/**
* Sets the area of the receiver which can be changed
* by drawing operations to the region specified
* by the argument. Specifying null for the
* region reverts the receiver's clipping area to its
* original value.
*
* @param region the clipping region or null
*
* @exception IllegalArgumentException
* - ERROR_INVALID_ARGUMENT - if the region has been disposed
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void setClipping (Region region) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (region != null && region.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
setClipping(region != null ? Region.win32_getHandle(region, getZoom()) : 0);
}
/**
* Sets the receiver's fill rule to the parameter, which must be one of
* SWT.FILL_EVEN_ODD or SWT.FILL_WINDING.
*
* @param rule the new fill rule
*
* @exception IllegalArgumentException
* - ERROR_INVALID_ARGUMENT - if the rule is not one of
SWT.FILL_EVEN_ODD
* or SWT.FILL_WINDING
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @since 3.1
*/
public void setFillRule(int rule) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
int mode = OS.ALTERNATE;
switch (rule) {
case SWT.FILL_WINDING: mode = OS.WINDING; break;
case SWT.FILL_EVEN_ODD: mode = OS.ALTERNATE; break;
default:
SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
OS.SetPolyFillMode(handle, mode);
}
/**
* Sets the font which will be used by the receiver
* to draw and measure text to the argument. If the
* argument is null, then a default font appropriate
* for the platform will be used instead.
*
* @param font the new font for the receiver, or null to indicate a default font
*
* @exception IllegalArgumentException
* - ERROR_INVALID_ARGUMENT - if the font has been disposed
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void setFont (Font font) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (font != null && font.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
data.font = font != null ? SWTFontProvider.getFont(device, font.getFontData()[0], data.nativeZoom) : SWTFontProvider.getSystemFont(device, data.nativeZoom);
data.state &= ~FONT;
}
/**
* Sets the foreground color. The foreground color is used
* for drawing operations including when text is drawn.
*
* @param color the new foreground color for the receiver
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the color is null
* - ERROR_INVALID_ARGUMENT - if the color has been disposed
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void setForeground (Color color) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (color == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
if (color.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
if (data.foregroundPattern == null && color.handle == data.foreground) return;
data.foregroundPattern = null;
data.foreground = color.handle;
data.state &= ~(FOREGROUND | FOREGROUND_TEXT);
}
/**
* Sets the foreground pattern. The default value is null.
*
* This operation requires the operating system's advanced
* graphics subsystem which may not be available on some
* platforms.
*
* @param pattern the new foreground pattern
*
* @exception IllegalArgumentException
* - ERROR_INVALID_ARGUMENT - if the parameter has been disposed
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
* - ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available
*
*
* @see Pattern
* @see #getAdvanced
* @see #setAdvanced
*
* @since 3.1
*/
public void setForegroundPattern (Pattern pattern) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (pattern != null && pattern.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
if (data.gdipGraphics == 0 && pattern == null) return;
initGdip();
if (data.foregroundPattern == pattern) return;
data.foregroundPattern = pattern;
data.state &= ~FOREGROUND;
if(data.gdipFgPatternBrushAlpha != 0) {
Gdip.TextureBrush_delete(data.gdipFgPatternBrushAlpha);
data.gdipFgPatternBrushAlpha = 0;
}
}
/**
* Sets the receiver's interpolation setting to the parameter, which
* must be one of SWT.DEFAULT, SWT.NONE,
* SWT.LOW or SWT.HIGH.
*
* This operation requires the operating system's advanced
* graphics subsystem which may not be available on some
* platforms.
*
*
* @param interpolation the new interpolation setting
*
* @exception IllegalArgumentException
* - ERROR_INVALID_ARGUMENT - if the rule is not one of
SWT.DEFAULT,
* SWT.NONE, SWT.LOW or SWT.HIGH
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
* - ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available
*
*
* @see #getAdvanced
* @see #setAdvanced
*
* @since 3.1
*/
public void setInterpolation(int interpolation) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (data.gdipGraphics == 0 && interpolation == SWT.DEFAULT) return;
int mode = 0;
switch (interpolation) {
case SWT.DEFAULT: mode = Gdip.InterpolationModeDefault; break;
case SWT.NONE: mode = Gdip.InterpolationModeNearestNeighbor; break;
case SWT.LOW: mode = Gdip.InterpolationModeLowQuality; break;
case SWT.HIGH: mode = Gdip.InterpolationModeHighQuality; break;
default:
SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
initGdip();
Gdip.Graphics_SetInterpolationMode(data.gdipGraphics, mode);
}
/**
* Sets the receiver's line attributes.
*
* This operation requires the operating system's advanced
* graphics subsystem which may not be available on some
* platforms.
*
* @param attributes the line attributes
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the attributes is null
* - ERROR_INVALID_ARGUMENT - if any of the line attributes is not valid
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
* - ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available
*
*
* @see LineAttributes
* @see #getAdvanced
* @see #setAdvanced
*
* @since 3.3
*/
public void setLineAttributes (LineAttributes attributes) {
if (attributes == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
attributes.width = DPIUtil.scaleUp(drawable, attributes.width, getZoom());
setLineAttributesInPixels(attributes);
}
void setLineAttributesInPixels (LineAttributes attributes) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
int mask = 0;
float lineWidth = attributes.width;
if (lineWidth != data.lineWidth) {
mask |= LINE_WIDTH | DRAW_OFFSET;
}
int lineStyle = attributes.style;
if (lineStyle != data.lineStyle) {
mask |= LINE_STYLE;
switch (lineStyle) {
case SWT.LINE_SOLID:
case SWT.LINE_DASH:
case SWT.LINE_DOT:
case SWT.LINE_DASHDOT:
case SWT.LINE_DASHDOTDOT:
break;
case SWT.LINE_CUSTOM:
if (attributes.dash == null) lineStyle = SWT.LINE_SOLID;
break;
default:
SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
}
int join = attributes.join;
if (join != data.lineJoin) {
mask |= LINE_JOIN;
switch (join) {
case SWT.JOIN_MITER:
case SWT.JOIN_ROUND:
case SWT.JOIN_BEVEL:
break;
default:
SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
}
int cap = attributes.cap;
if (cap != data.lineCap) {
mask |= LINE_CAP;
switch (cap) {
case SWT.CAP_FLAT:
case SWT.CAP_ROUND:
case SWT.CAP_SQUARE:
break;
default:
SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
}
float[] dashes = attributes.dash;
float[] lineDashes = data.lineDashes;
if (dashes != null && dashes.length > 0) {
boolean changed = lineDashes == null || lineDashes.length != dashes.length;
for (int i = 0; i < dashes.length; i++) {
float dash = dashes[i];
if (dash <= 0) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
if (!changed && lineDashes[i] != dash) changed = true;
}
if (changed) {
float[] newDashes = new float[dashes.length];
int deviceZoom = getZoom();
for (int i = 0; i < newDashes.length; i++) {
newDashes[i] = DPIUtil.scaleUp(drawable, dashes[i], deviceZoom);
}
dashes = newDashes;
mask |= LINE_STYLE;
} else {
dashes = lineDashes;
}
} else {
if (lineDashes != null && lineDashes.length > 0) {
mask |= LINE_STYLE;
} else {
dashes = lineDashes;
}
}
float dashOffset = attributes.dashOffset;
if (dashOffset != data.lineDashesOffset) {
mask |= LINE_STYLE;
}
float miterLimit = attributes.miterLimit;
if (miterLimit != data.lineMiterLimit) {
mask |= LINE_MITERLIMIT;
}
initGdip();
if (mask == 0) return;
data.lineWidth = lineWidth;
data.lineStyle = lineStyle;
data.lineCap = cap;
data.lineJoin = join;
data.lineDashes = dashes;
data.lineDashesOffset = dashOffset;
data.lineMiterLimit = miterLimit;
data.state &= ~mask;
}
/**
* Sets the receiver's line cap style to the argument, which must be one
* of the constants SWT.CAP_FLAT, SWT.CAP_ROUND,
* or SWT.CAP_SQUARE.
*
* @param cap the cap style to be used for drawing lines
*
* @exception IllegalArgumentException
* - ERROR_INVALID_ARGUMENT - if the style is not valid
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @since 3.1
*/
public void setLineCap(int cap) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (data.lineCap == cap) return;
switch (cap) {
case SWT.CAP_ROUND:
case SWT.CAP_FLAT:
case SWT.CAP_SQUARE:
break;
default:
SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
data.lineCap = cap;
data.state &= ~LINE_CAP;
}
/**
* Sets the receiver's line dash style to the argument. The default
* value is null. If the argument is not null,
* the receiver's line style is set to SWT.LINE_CUSTOM, otherwise
* it is set to SWT.LINE_SOLID.
*
* @param dashes the dash style to be used for drawing lines
*
* @exception IllegalArgumentException
* - ERROR_INVALID_ARGUMENT - if any of the values in the array is less than or equal 0
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @since 3.1
*/
public void setLineDash(int[] dashes) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
float[] lineDashes = data.lineDashes;
if (dashes != null && dashes.length > 0) {
boolean changed = data.lineStyle != SWT.LINE_CUSTOM || lineDashes == null || lineDashes.length != dashes.length;
float[] newDashes = new float[dashes.length];
int deviceZoom = getZoom();
for (int i = 0; i < dashes.length; i++) {
if (dashes[i] <= 0) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
newDashes[i] = DPIUtil.scaleUp(drawable, (float) dashes[i], deviceZoom);
if (!changed && lineDashes[i] != newDashes[i]) changed = true;
}
if (!changed) return;
data.lineDashes = newDashes;
data.lineStyle = SWT.LINE_CUSTOM;
} else {
if (data.lineStyle == SWT.LINE_SOLID && (lineDashes == null || lineDashes.length == 0)) return;
data.lineDashes = null;
data.lineStyle = SWT.LINE_SOLID;
}
data.state &= ~LINE_STYLE;
}
/**
* Sets the receiver's line join style to the argument, which must be one
* of the constants SWT.JOIN_MITER, SWT.JOIN_ROUND,
* or SWT.JOIN_BEVEL.
*
* @param join the join style to be used for drawing lines
*
* @exception IllegalArgumentException
* - ERROR_INVALID_ARGUMENT - if the style is not valid
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @since 3.1
*/
public void setLineJoin(int join) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (data.lineJoin == join) return;
switch (join) {
case SWT.JOIN_MITER:
case SWT.JOIN_ROUND:
case SWT.JOIN_BEVEL:
break;
default:
SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
data.lineJoin = join;
data.state &= ~LINE_JOIN;
}
/**
* Sets the receiver's line style to the argument, which must be one
* of the constants SWT.LINE_SOLID, SWT.LINE_DASH,
* SWT.LINE_DOT, SWT.LINE_DASHDOT or
* SWT.LINE_DASHDOTDOT.
*
* @param lineStyle the style to be used for drawing lines
*
* @exception IllegalArgumentException
* - ERROR_INVALID_ARGUMENT - if the style is not valid
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void setLineStyle(int lineStyle) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (data.lineStyle == lineStyle) return;
switch (lineStyle) {
case SWT.LINE_SOLID:
case SWT.LINE_DASH:
case SWT.LINE_DOT:
case SWT.LINE_DASHDOT:
case SWT.LINE_DASHDOTDOT:
break;
case SWT.LINE_CUSTOM:
if (data.lineDashes == null) lineStyle = SWT.LINE_SOLID;
break;
default:
SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
data.lineStyle = lineStyle;
data.state &= ~LINE_STYLE;
}
/**
* Sets the width that will be used when drawing lines
* for all of the figure drawing operations (that is,
* drawLine, drawRectangle,
* drawPolyline, and so forth.
*
* Note that line width of zero is used as a hint to
* indicate that the fastest possible line drawing
* algorithms should be used. This means that the
* output may be different from line width one and
* specially at high DPI it's not recommended to mix
* line width zero with other line widths.
*
*
* @param lineWidth the width of a line
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void setLineWidth(int lineWidth) {
lineWidth = DPIUtil.scaleUp (drawable, lineWidth, getZoom());
setLineWidthInPixels(lineWidth);
}
void setLineWidthInPixels(int lineWidth) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (data.lineWidth == lineWidth) return;
data.lineWidth = lineWidth;
data.state &= ~(LINE_WIDTH | DRAW_OFFSET);
}
/**
* If the argument is true, puts the receiver
* in a drawing mode where the resulting color in the destination
* is the exclusive or of the color values in the source
* and the destination, and if the argument is false,
* puts the receiver in a drawing mode where the destination color
* is replaced with the source color value.
*
* @param xor if true, then xor mode is used, otherwise source copy mode is used
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void setXORMode(boolean xor) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
OS.SetROP2(handle, xor ? OS.R2_XORPEN : OS.R2_COPYPEN);
}
/**
* Sets the receiver's text anti-aliasing value to the parameter,
* which must be one of SWT.DEFAULT, SWT.OFF
* or SWT.ON. Note that this controls anti-aliasing only
* for all text drawing operations.
*
* This operation requires the operating system's advanced
* graphics subsystem which may not be available on some
* platforms.
*
*
* @param antialias the anti-aliasing setting
*
* @exception IllegalArgumentException
* - ERROR_INVALID_ARGUMENT - if the parameter is not one of
SWT.DEFAULT,
* SWT.OFF or SWT.ON
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
* - ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available
*
*
* @see #getAdvanced
* @see #setAdvanced
* @see #setAntialias
*
* @since 3.1
*/
public void setTextAntialias(int antialias) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (data.gdipGraphics == 0 && antialias == SWT.DEFAULT) return;
int textMode = 0;
switch (antialias) {
case SWT.DEFAULT:
textMode = Gdip.TextRenderingHintSystemDefault;
break;
case SWT.OFF:
textMode = Gdip.TextRenderingHintSingleBitPerPixelGridFit;
break;
case SWT.ON:
int[] type = new int[1];
OS.SystemParametersInfo(OS.SPI_GETFONTSMOOTHINGTYPE, 0, type, 0);
if (type[0] == OS.FE_FONTSMOOTHINGCLEARTYPE) {
textMode = Gdip.TextRenderingHintClearTypeGridFit;
} else {
textMode = Gdip.TextRenderingHintAntiAliasGridFit;
}
break;
default:
SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
initGdip();
Gdip.Graphics_SetTextRenderingHint(data.gdipGraphics, textMode);
}
/**
* Sets the transform that is currently being used by the receiver. If
* the argument is null, the current transform is set to
* the identity transform.
*
* This operation requires the operating system's advanced
* graphics subsystem which may not be available on some
* platforms.
*
*
* @param transform the transform to set
*
* @exception IllegalArgumentException
* - ERROR_INVALID_ARGUMENT - if the parameter has been disposed
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
* - ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available
*
*
* @see Transform
* @see #getAdvanced
* @see #setAdvanced
*
* @since 3.1
*/
public void setTransform(Transform transform) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (transform != null && transform.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
if (data.gdipGraphics == 0 && transform == null) return;
initGdip();
long identity = identity();
if (transform != null) {
Gdip.Matrix_Multiply(identity, transform.getHandle(getZoom()), Gdip.MatrixOrderPrepend);
}
Gdip.Graphics_SetTransform(data.gdipGraphics, identity);
Gdip.Matrix_delete(identity);
data.state &= ~DRAW_OFFSET;
}
/**
* Returns the extent of the given string. No tab
* expansion or carriage return processing will be performed.
*
* The extent of a string is the width and height of
* the rectangular area it would cover if drawn in a particular
* font (in this case, the current font in the receiver).
*
*
* @param string the string to measure
* @return a point containing the extent of the string
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the string is null
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public Point stringExtent (String string) {
if (string == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
return DPIUtil.scaleDown(drawable, stringExtentInPixels(string), getZoom());
}
Point stringExtentInPixels (String string) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
checkGC(FONT);
int length = string.length();
long gdipGraphics = data.gdipGraphics;
if (gdipGraphics != 0) {
Point size = new Point(0, 0);
drawText(gdipGraphics, string, 0, 0, 0, size);
return size;
}
SIZE size = new SIZE();
if (length == 0) {
// OS.GetTextExtentPoint32(handle, SPACE, SPACE.length(), size);
OS.GetTextExtentPoint32(handle, new char[]{' '}, 1, size);
return new Point(0, size.cy);
} else {
char[] buffer = string.toCharArray();
OS.GetTextExtentPoint32(handle, buffer, length, size);
return new Point(size.cx, size.cy);
}
}
/**
* Returns the extent of the given string. Tab expansion and
* carriage return processing are performed.
*
* The extent of a string is the width and height of
* the rectangular area it would cover if drawn in a particular
* font (in this case, the current font in the receiver).
*
*
* @param string the string to measure
* @return a point containing the extent of the string
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the string is null
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public Point textExtent (String string) {
return DPIUtil.scaleDown(drawable, textExtentInPixels(string, SWT.DRAW_DELIMITER | SWT.DRAW_TAB), getZoom());
}
/**
* Returns the extent of the given string. Tab expansion, line
* delimiter and mnemonic processing are performed according to
* the specified flags, which can be a combination of:
*
* - DRAW_DELIMITER
* - draw multiple lines
* - DRAW_TAB
* - expand tabs
* - DRAW_MNEMONIC
* - underline the mnemonic character
* - DRAW_TRANSPARENT
* - transparent background
*
*
* The extent of a string is the width and height of
* the rectangular area it would cover if drawn in a particular
* font (in this case, the current font in the receiver).
*
*
* @param string the string to measure
* @param flags the flags specifying how to process the text
* @return a point containing the extent of the string
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the string is null
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public Point textExtent (String string, int flags) {
return DPIUtil.scaleDown(drawable, textExtentInPixels(string, flags), getZoom());
}
Point textExtentInPixels(String string, int flags) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (string == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
checkGC(FONT);
long gdipGraphics = data.gdipGraphics;
if (gdipGraphics != 0) {
Point size = new Point(0, 0);
drawText(gdipGraphics, string, 0, 0, flags, size);
return size;
}
if (string.length () == 0) {
SIZE size = new SIZE();
OS.GetTextExtentPoint32(handle, new char [] {' '}, 1, size);
return new Point(0, size.cy);
}
RECT rect = new RECT();
char [] buffer = string.toCharArray();
int uFormat = OS.DT_LEFT | OS.DT_CALCRECT;
if ((flags & SWT.DRAW_DELIMITER) == 0) uFormat |= OS.DT_SINGLELINE;
if ((flags & SWT.DRAW_TAB) != 0) uFormat |= OS.DT_EXPANDTABS;
if ((flags & SWT.DRAW_MNEMONIC) == 0) uFormat |= OS.DT_NOPREFIX;
OS.DrawText(handle, buffer, buffer.length, rect, uFormat);
return new Point(rect.right, rect.bottom);
}
/**
* Returns a string containing a concise, human-readable
* description of the receiver.
*
* @return a string representation of the receiver
*/
@Override
public String toString () {
if (isDisposed()) return "GC {*DISPOSED*}";
return "GC {" + handle + "}";
}
/**
* Invokes platform specific functionality to allocate a new graphics context.
*
* IMPORTANT: This method is not part of the public
* API for GC. It is marked public only so that it
* can be shared within the packages provided by SWT. It is not
* available on all platforms, and should never be called from
* application code.
*
*
* @param drawable the Drawable for the receiver.
* @param data the data for the receiver.
*
* @return a new GC
*
* @noreference This method is not intended to be referenced by clients.
*/
public static GC win32_new(Drawable drawable, GCData data) {
GC gc = new GC();
long hDC = drawable.internal_new_GC(data);
gc.device = data.device;
gc.init(drawable, data, hDC);
return gc;
}
/**
* Invokes platform specific functionality to wrap a graphics context.
*
* IMPORTANT: This method is not part of the public
* API for GC. It is marked public only so that it
* can be shared within the packages provided by SWT. It is not
* available on all platforms, and should never be called from
* application code.
*
*
* @param hDC the Windows HDC.
* @param data the data for the receiver.
*
* @return a new GC
*
* @noreference This method is not intended to be referenced by clients.
*/
public static GC win32_new(long hDC, GCData data) {
GC gc = new GC();
gc.device = data.device;
data.style |= SWT.LEFT_TO_RIGHT;
int flags = OS.GetLayout (hDC);
if ((flags & OS.LAYOUT_RTL) != 0) {
data.style |= SWT.RIGHT_TO_LEFT | SWT.MIRRORED;
}
gc.init(null, data, hDC);
return gc;
}
/**
* Answers the length of the side adjacent to the given angle
* of a right triangle. In other words, it returns the integer
* conversion of length * cos (angle).
*
* @param angle the angle in degrees
* @param length the length of the triangle's hypotenuse
* @return the integer conversion of length * cos (angle)
*/
private static int cos(int angle, int length) {
return (int)(Math.cos(angle * (Math.PI/180)) * length);
}
/**
* Answers the length of the side opposite to the given angle
* of a right triangle. In other words, it returns the integer
* conversion of length * sin (angle).
*
* @param angle the angle in degrees
* @param length the length of the triangle's hypotenuse
* @return the integer conversion of length * sin (angle)
*/
private static int sin(int angle, int length) {
return (int)(Math.sin(angle * (Math.PI/180)) * length);
}
private int getZoom() {
return DPIUtil.getZoomForAutoscaleProperty(data.nativeZoom);
}
}
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