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This is a backport of OpenJFX 8 to run on Java 7.
The newest version!
/*
* Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.sun.javafx.tk.quantum;
import java.nio.ByteBuffer;
import java.nio.IntBuffer;
import javafx.geometry.Dimension2D;
import com.sun.glass.ui.Application;
import com.sun.glass.ui.Cursor;
import com.sun.glass.ui.Size;
import com.sun.javafx.cursor.CursorFrame;
import com.sun.javafx.cursor.ImageCursorFrame;
import com.sun.javafx.iio.common.PushbroomScaler;
import com.sun.javafx.iio.common.ScalerFactory;
final class CursorUtils {
private CursorUtils() {
}
public static Cursor getPlatformCursor(final CursorFrame cursorFrame) {
final Cursor cachedPlatformCursor =
cursorFrame.getPlatformCursor(Cursor.class);
if (cachedPlatformCursor != null) {
// platform cursor already cached
return cachedPlatformCursor;
}
// platform cursor not cached yet
final Cursor platformCursor = createPlatformCursor(cursorFrame);
cursorFrame.setPlatforCursor(Cursor.class, platformCursor);
return platformCursor;
}
public static Dimension2D getBestCursorSize(int preferredWidth,
int preferredHeight) {
Size size = Cursor.getBestSize(preferredWidth, preferredHeight);
return new Dimension2D(size.width, size.height);
}
private static Cursor createPlatformCursor(final CursorFrame cursorFrame) {
Application app = Application.GetApplication();
switch (cursorFrame.getCursorType()) {
case CROSSHAIR:
return app.createCursor(Cursor.CURSOR_CROSSHAIR);
case TEXT:
return app.createCursor(Cursor.CURSOR_TEXT);
case WAIT:
return app.createCursor(Cursor.CURSOR_WAIT);
case DEFAULT:
return app.createCursor(Cursor.CURSOR_DEFAULT);
case OPEN_HAND:
return app.createCursor(Cursor.CURSOR_OPEN_HAND);
case CLOSED_HAND:
return app.createCursor(Cursor.CURSOR_CLOSED_HAND);
case HAND:
return app.createCursor(Cursor.CURSOR_POINTING_HAND);
case H_RESIZE:
return app.createCursor(Cursor.CURSOR_RESIZE_LEFTRIGHT);
case V_RESIZE:
return app.createCursor(Cursor.CURSOR_RESIZE_UPDOWN);
case MOVE:
return app.createCursor(Cursor.CURSOR_MOVE);
case DISAPPEAR:
return app.createCursor(Cursor.CURSOR_DISAPPEAR);
case SW_RESIZE:
return app.createCursor(Cursor.CURSOR_RESIZE_SOUTHWEST);
case SE_RESIZE:
return app.createCursor(Cursor.CURSOR_RESIZE_SOUTHEAST);
case NW_RESIZE:
return app.createCursor(Cursor.CURSOR_RESIZE_NORTHWEST);
case NE_RESIZE:
return app.createCursor(Cursor.CURSOR_RESIZE_NORTHEAST);
case N_RESIZE:
case S_RESIZE:
return app.createCursor(Cursor.CURSOR_RESIZE_UPDOWN);
case W_RESIZE:
case E_RESIZE:
return app.createCursor(Cursor.CURSOR_RESIZE_LEFTRIGHT);
case NONE:
return app.createCursor(Cursor.CURSOR_NONE);
case IMAGE:
return createPlatformImageCursor(
(ImageCursorFrame) cursorFrame);
default:
System.err.println("unhandled Cursor: "
+ cursorFrame.getCursorType());
return app.createCursor(Cursor.CURSOR_DEFAULT);
}
}
private static Cursor createPlatformImageCursor(
final ImageCursorFrame imageCursorFrame) {
return createPlatformImageCursor(
imageCursorFrame.getPlatformImage(),
(float) imageCursorFrame.getHotspotX(),
(float) imageCursorFrame.getHotspotY());
}
private static Cursor createPlatformImageCursor(Object platformImage,
float hotspotX,
float hotspotY) {
if (platformImage == null) {
throw new IllegalArgumentException(
"QuantumToolkit.createImageCursor: no image");
}
assert platformImage instanceof com.sun.prism.Image;
com.sun.prism.Image prismImage = (com.sun.prism.Image) platformImage;
int iheight = prismImage.getHeight();
int iwidth = prismImage.getWidth();
Dimension2D d = getBestCursorSize(iwidth, iheight);
float bestWidth = (float)d.getWidth();
float bestHeight = (float)d.getHeight();
if ((bestWidth <= 0) || (bestHeight <= 0)) {
return Application.GetApplication()
.createCursor(Cursor.CURSOR_DEFAULT);
}
ByteBuffer buf;
switch (prismImage.getPixelFormat()) {
case INT_ARGB_PRE:
return createPlatformImageCursor((int) hotspotX, (int) hotspotY,
iwidth, iheight,
prismImage.getPixelBuffer());
case BYTE_RGB:
case BYTE_BGRA_PRE:
case BYTE_GRAY:
buf = (ByteBuffer) prismImage.getPixelBuffer();
break;
default:
throw new IllegalArgumentException(
"QuantumToolkit.createImageCursor: bad image format");
}
float xscale = bestWidth / (float)iwidth;
float yscale = bestHeight / (float)iheight;
int scaledHotSpotX = (int) (hotspotX * xscale);
int scaledHotSpotY = (int) (hotspotY * yscale);
PushbroomScaler scaler;
scaler = ScalerFactory.createScaler(iwidth, iheight,
prismImage.getBytesPerPixelUnit(),
(int)bestWidth, (int)bestHeight, true);
//shrink the image and convert the format to INT_ARGB_PRE
byte bytes[] = new byte[buf.limit()];
//Iterate through each scanline of the image
//and pass it one at a time to the scaling object
int scanlineStride = prismImage.getScanlineStride();
for (int z = 0; z < iheight; z++) {
buf.position(z * scanlineStride);
buf.get(bytes, 0, scanlineStride);
if (scaler != null) {
scaler.putSourceScanline(bytes, 0);
}
}
buf.rewind();
final com.sun.prism.Image img =
prismImage.iconify(scaler.getDestination(),
(int)bestWidth,
(int)bestHeight);
return createPlatformImageCursor(scaledHotSpotX, scaledHotSpotY,
img.getWidth(), img.getHeight(),
img.getPixelBuffer());
}
private static Cursor createPlatformImageCursor(int x, int y,
int width,
int height,
Object buffer) {
Application app = Application.GetApplication();
return app.createCursor(x, y, app.createPixels(width, height,
(IntBuffer) buffer));
}
}