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SWT is an open source widget toolkit for Java designed to provide efficient, portable access to the user-interface facilities of the operating systems on which it is implemented.
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/*******************************************************************************
* Copyright (c) 2000, 2012 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.swt.internal.theme;
import org.eclipse.swt.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.internal.win32.*;
public class ScrollBarDrawData extends RangeDrawData {
public int thumb;
public int increment;
public int pageIncrement;
public ScrollBarDrawData() {
state = new int[6];
}
void draw(Theme theme, GC gc, Rectangle bounds) {
if (OS.COMCTL32_MAJOR >= 6 && OS.IsAppThemed ()) {
int /*long*/ hTheme = OS.OpenThemeData(0, getClassId());
RECT rect = new RECT ();
if ((style & SWT.VERTICAL) != 0) {
int width = OS.GetThemeSysSize(hTheme, OS.SM_CXVSCROLL);
rect.left = bounds.x;
rect.right = rect.left + bounds.width;
rect.top = bounds.y;
rect.bottom = rect.top + width;
int[] part = getPartId(DrawData.SCROLLBAR_UP_ARROW);
OS.DrawThemeBackground (hTheme, gc.handle, part[0], part[1], rect, null);
rect.bottom = bounds.y + bounds.height;
rect.top = rect.bottom - width;
part = getPartId(DrawData.SCROLLBAR_DOWN_ARROW);
OS.DrawThemeBackground (hTheme, gc.handle, part[0], part[1], rect, null);
int totalWidth = bounds.height - 2 * width;
int thumbWidth = Math.max(width / 2, (totalWidth * thumb) / Math.max(1, (maximum - minimum)));//BAD
int thumbPos = bounds.y + width + Math.max(0, (totalWidth * selection) / Math.max(1, (maximum - minimum)));
rect.top = bounds.y + width;
rect.bottom = thumbPos;
part = getPartId(DrawData.SCROLLBAR_UP_TRACK);
OS.DrawThemeBackground (hTheme, gc.handle, part[0], part[1], rect, null);
rect.top = rect.bottom;
rect.bottom = rect.top + thumbWidth;
part = getPartId(DrawData.SCROLLBAR_THUMB);
OS.DrawThemeBackground (hTheme, gc.handle, part[0], part[1], rect, null);
OS.DrawThemeBackground (hTheme, gc.handle, OS.SBP_GRIPPERVERT, part[1], rect, null);
rect.top = rect.bottom;
rect.bottom = bounds.y + bounds.height - width;
part = getPartId(DrawData.SCROLLBAR_DOWN_TRACK);
OS.DrawThemeBackground (hTheme, gc.handle, part[0], part[1], rect, null);
} else {
//TODO - why SM_CXHSCROLL = 0?
int height = OS.GetThemeSysSize(hTheme, OS.SM_CXVSCROLL);
rect.top = bounds.y;
rect.bottom = rect.top + bounds.height;
rect.left = bounds.x;
rect.right = rect.left + height;
int[] part = getPartId(DrawData.SCROLLBAR_LEFT_ARROW);
OS.DrawThemeBackground (hTheme, gc.handle, part[0], part[1], rect, null);
rect.right = bounds.x + bounds.width;
rect.left = rect.right - height;
part = getPartId(DrawData.SCROLLBAR_RIGHT_ARROW);
OS.DrawThemeBackground (hTheme, gc.handle, part[0], part[1], rect, null);
int totalWidth = bounds.width - 2 * height;
int thumbWidth = Math.max(height / 2, (totalWidth * thumb) / (maximum - minimum));//BAD
int thumbPos = bounds.x + height + Math.max(0, (totalWidth * selection) / Math.max(1, (maximum - minimum)));
rect.left = bounds.x + height;
rect.right = thumbPos;
part = getPartId(DrawData.SCROLLBAR_UP_TRACK);
OS.DrawThemeBackground (hTheme, gc.handle, part[0], part[1], rect, null);
rect.left = rect.right;
rect.right = rect.left + thumbWidth;
part = getPartId(DrawData.SCROLLBAR_THUMB);
OS.DrawThemeBackground (hTheme, gc.handle, part[0], part[1], rect, null);
OS.DrawThemeBackground (hTheme, gc.handle, OS.SBP_GRIPPERHORZ, part[1], rect, null);
rect.left = rect.right;
rect.right = bounds.x + bounds.width - height;
part = getPartId(DrawData.SCROLLBAR_DOWN_TRACK);
OS.DrawThemeBackground (hTheme, gc.handle, part[0], part[1], rect, null);
}
OS.CloseThemeData (hTheme);
}
}
char[] getClassId() {
return SCROLLBAR;
}
int[] getPartId(int part) {
int iPartId = 0, iStateId = 0;
int state = this.state[part];
switch (part) {
case DrawData.SCROLLBAR_UP_ARROW:
iPartId = OS.SBP_ARROWBTN;
if ((style & SWT.VERTICAL) != 0) {
iStateId = OS.ABS_UPNORMAL;
if ((state & DrawData.HOT) != 0) iStateId = OS.ABS_UPHOT;
if ((state & DrawData.PRESSED) != 0) iStateId = OS.ABS_UPPRESSED;
if ((state & DrawData.DISABLED) != 0) iStateId = OS.ABS_UPDISABLED;
} else {
iStateId = OS.ABS_LEFTNORMAL;
if ((state & DrawData.HOT) != 0) iStateId = OS.ABS_LEFTHOT;
if ((state & DrawData.PRESSED) != 0) iStateId = OS.ABS_LEFTPRESSED;
if ((state & DrawData.DISABLED) != 0) iStateId = OS.ABS_LEFTDISABLED;
}
break;
case DrawData.SCROLLBAR_DOWN_ARROW:
iPartId = OS.SBP_ARROWBTN;
if ((style & SWT.VERTICAL) != 0) {
iStateId = OS.ABS_DOWNNORMAL;
if ((state & DrawData.HOT) != 0) iStateId = OS.ABS_DOWNHOT;
if ((state & DrawData.PRESSED) != 0) iStateId = OS.ABS_DOWNPRESSED;
if ((state & DrawData.DISABLED) != 0) iStateId = OS.ABS_DOWNDISABLED;
} else {
iStateId = OS.ABS_RIGHTNORMAL;
if ((state & DrawData.HOT) != 0) iStateId = OS.ABS_RIGHTHOT;
if ((state & DrawData.PRESSED) != 0) iStateId = OS.ABS_RIGHTPRESSED;
if ((state & DrawData.DISABLED) != 0) iStateId = OS.ABS_RIGHTDISABLED;
}
break;
case DrawData.WIDGET_WHOLE:
case DrawData.SCROLLBAR_THUMB:
if ((style & SWT.VERTICAL) != 0) {
iPartId = OS.SBP_THUMBBTNVERT;
} else {
iPartId = OS.SBP_THUMBBTNHORZ;
}
break;
case DrawData.SCROLLBAR_UP_TRACK:
if ((style & SWT.VERTICAL) != 0) {
iPartId = OS.SBP_UPPERTRACKVERT;
} else {
iPartId = OS.SBP_UPPERTRACKHORZ;
}
break;
case DrawData.SCROLLBAR_DOWN_TRACK:
if ((style & SWT.VERTICAL) != 0) {
iPartId = OS.SBP_LOWERTRACKVERT;
} else {
iPartId = OS.SBP_LOWERTRACKHORZ;
}
break;
}
if (part != DrawData.SCROLLBAR_DOWN_ARROW && part != DrawData.SCROLLBAR_UP_ARROW) {
iStateId = OS.SCRBS_NORMAL;
if ((state & DrawData.HOT) != 0) iStateId = OS.SCRBS_HOT;
if ((state & DrawData.PRESSED) != 0) iStateId = OS.SCRBS_PRESSED;
if ((state & DrawData.DISABLED) != 0) iStateId = OS.SCRBS_DISABLED;
}
return new int[]{iPartId, iStateId};
}
Rectangle getBounds(int part, Rectangle bounds) {
if (OS.COMCTL32_MAJOR >= 6 && OS.IsAppThemed ()) {
int /*long*/ hTheme = OS.OpenThemeData(0, getClassId());
if ((style & SWT.VERTICAL) != 0) {
int width = OS.GetThemeSysSize(hTheme, OS.SM_CXVSCROLL);
int totalWidth = bounds.height - 2 * width;
int thumbWidth = Math.max(width / 2, (totalWidth * thumb) / Math.max(1, (maximum - minimum)));//BAD
int thumbPos = bounds.y + width + Math.max(0, (totalWidth * selection) / Math.max(1, (maximum - minimum)));
switch (part) {
case DrawData.SCROLLBAR_DOWN_ARROW:
return new Rectangle(bounds.x, bounds.y + bounds.height - width, bounds.width, width);
case DrawData.SCROLLBAR_UP_ARROW:
return new Rectangle(bounds.x, bounds.y, bounds.width, width);
case DrawData.SCROLLBAR_UP_TRACK:
return new Rectangle(bounds.x, bounds.y + width, bounds.width, thumbPos - bounds.y - width);
case DrawData.SCROLLBAR_THUMB:
return new Rectangle(bounds.x, thumbPos, bounds.width, thumbWidth);
case DrawData.SCROLLBAR_DOWN_TRACK:
return new Rectangle(bounds.x, thumbPos + thumbWidth, bounds.width, bounds.y + bounds.height - width - thumbPos - thumbWidth);
}
} else {
}
OS.CloseThemeData (hTheme);
}
return super.getBounds(part, bounds);
}
int getSelection(Point position, Rectangle bounds) {
if (OS.COMCTL32_MAJOR >= 6 && OS.IsAppThemed ()) {
int /*long*/ hTheme = OS.OpenThemeData(0, getClassId());
if ((style & SWT.VERTICAL) != 0) {
int width = OS.GetThemeSysSize(hTheme, OS.SM_CXVSCROLL);
int totalWidth = bounds.height - 2 * width;
int thumbPos = bounds.y + width + Math.max(0, (totalWidth * selection) / Math.max(1, (maximum - minimum)));
thumbPos += position.y;
int selection = ((thumbPos - bounds.y - width) * (maximum - minimum)) / totalWidth;
return Math.max(0, Math.min(selection, maximum - thumb));
} else {
}
OS.CloseThemeData (hTheme);
}
return 0;
}
int hit(Theme theme, Point position, Rectangle bounds) {
if (!(OS.COMCTL32_MAJOR >= 6 && OS.IsAppThemed ())) return -1;
int /*long*/ hTheme = OS.OpenThemeData(0, getClassId());
//TODO - should we take a GC?
int hDC = 0;
RECT rect = new RECT ();
POINT pt = new POINT();
pt.x = position.x;
pt.y = position.y;
short[] code = new short[1];
try {
if ((style & SWT.VERTICAL) != 0) {
int width = OS.GetThemeSysSize(hTheme, OS.SM_CXVSCROLL);
rect.left = bounds.x;
rect.right = rect.left + bounds.width;
rect.top = bounds.y;
rect.bottom = rect.top + width;
int[] part = getPartId(DrawData.SCROLLBAR_UP_ARROW);
OS.HitTestThemeBackground(hTheme, hDC, part[0], part[1], 0, rect, 0, pt, code);
if (code[0] != OS.HTNOWHERE) return DrawData.SCROLLBAR_UP_ARROW;
rect.bottom = bounds.y + bounds.height;
rect.top = rect.bottom - width;
part = getPartId(DrawData.SCROLLBAR_DOWN_ARROW);
OS.HitTestThemeBackground(hTheme, hDC, part[0], part[1], 0, rect, 0, pt, code);
if (code[0] != OS.HTNOWHERE) return DrawData.SCROLLBAR_DOWN_ARROW;
int totalWidth = bounds.height - 2 * width;
int thumbWidth = Math.max(width / 2, (totalWidth * thumb) / Math.max(1, (maximum - minimum)));//BAD
int thumbPos = bounds.y + width + Math.max(0, (totalWidth * selection) / Math.max(1, (maximum - minimum)));
rect.top = bounds.y + width;
rect.bottom = thumbPos;
part = getPartId(DrawData.SCROLLBAR_THUMB);
OS.HitTestThemeBackground(hTheme, hDC, part[0], part[1], 0, rect, 0, pt, code);
if (code[0] != OS.HTNOWHERE) return DrawData.SCROLLBAR_UP_TRACK;
rect.top = rect.bottom;
rect.bottom = rect.top + thumbWidth;
part = getPartId(DrawData.SCROLLBAR_UP_TRACK);
OS.HitTestThemeBackground(hTheme, hDC, part[0], part[1], 0, rect, 0, pt, code);
if (code[0] != OS.HTNOWHERE) return DrawData.SCROLLBAR_THUMB;
rect.top = rect.bottom;
rect.bottom = bounds.y + bounds.height - width;
part = getPartId(DrawData.SCROLLBAR_DOWN_TRACK);
OS.HitTestThemeBackground(hTheme, hDC, part[0], part[1], 0, rect, 0, pt, code);
if (code[0] != OS.HTNOWHERE) return DrawData.SCROLLBAR_DOWN_TRACK;
} else {
int height = OS.GetThemeSysSize(hTheme, OS.SM_CXVSCROLL);//BAD - why SM_CXHSCROLL = 0?
rect.top = bounds.y;
rect.bottom = rect.top + bounds.height;
rect.left = bounds.x;
rect.right = rect.left + height;
int[] part = getPartId(DrawData.SCROLLBAR_LEFT_ARROW);
OS.HitTestThemeBackground(hTheme, hDC, part[0], part[1], 0, rect, 0, pt, code);
if (code[0] != OS.HTNOWHERE) return DrawData.SCROLLBAR_UP_ARROW;
rect.right = bounds.x + bounds.width;
rect.left = rect.right - height;
part = getPartId(DrawData.SCROLLBAR_RIGHT_ARROW);
OS.HitTestThemeBackground(hTheme, hDC, part[0], part[1], 0, rect, 0, pt, code);
if (code[0] != OS.HTNOWHERE) return DrawData.SCROLLBAR_DOWN_ARROW;
int totalWidth = bounds.width - 2 * height;
int thumbWidth = Math.max(height / 2, (totalWidth * thumb) / (maximum - minimum));//BAD
int thumbPos = bounds.x + height + Math.max(0, (totalWidth * selection) / Math.max(1, (maximum - minimum)));
rect.left = bounds.x + height;
rect.right = thumbPos;
part = getPartId(DrawData.SCROLLBAR_LEFT_TRACK);
OS.HitTestThemeBackground(hTheme, hDC, part[0], part[1], 0, rect, 0, pt, code);
if (code[0] != OS.HTNOWHERE) return DrawData.SCROLLBAR_UP_TRACK;
rect.left = rect.right;
rect.right = rect.left + thumbWidth;
part = getPartId(DrawData.SCROLLBAR_THUMB);
OS.HitTestThemeBackground(hTheme, hDC, part[0], part[1], 0, rect, 0, pt, code);
if (code[0] != OS.HTNOWHERE) return DrawData.SCROLLBAR_THUMB;
rect.left = rect.right;
rect.right = bounds.x + bounds.width - height;
part = getPartId(DrawData.SCROLLBAR_RIGHT_TRACK);
OS.HitTestThemeBackground(hTheme, hDC, part[0], part[1], 0, rect, 0, pt, code);
if (code[0] != OS.HTNOWHERE) return DrawData.SCROLLBAR_DOWN_TRACK;
}
} finally {
OS.CloseThemeData (hTheme);
}
return DrawData.WIDGET_NOWHERE;
}
}