4632N/A

4632N/Apackage sun.lwawt.macosx;

4632N/A

4632N/Aimport java.awt.*;

4929N/Aimport java.awt.image.BufferedImage;

4632N/A

4632N/Apublic class CCustomCursor extends Cursor {

4632N/A static Dimension sMaxCursorSize;

4632N/A static Dimension getMaxCursorSize() {

4632N/A if (sMaxCursorSize != null) return sMaxCursorSize;

4632N/A final Rectangle bounds = GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice().getDefaultConfiguration().getBounds();

4632N/A return sMaxCursorSize = new Dimension(bounds.width / 2, bounds.height / 2);

4632N/A }

4632N/A

4632N/A Image fImage;

4632N/A Point fHotspot;

4632N/A

4632N/A public CCustomCursor(final Image cursor, final Point hotSpot, final String name) throws IndexOutOfBoundsException, HeadlessException {

4632N/A super(name);

4632N/A fImage = cursor;

4632N/A fHotspot = hotSpot;

4632N/A

4632N/A // This chunk of code is copied from sun.awt.CustomCursor

4632N/A final Toolkit toolkit = Toolkit.getDefaultToolkit();

4632N/A

4632N/A // Make sure image is fully loaded.

4632N/A final Component c = new Canvas(); // for its imageUpdate method

4632N/A final MediaTracker tracker = new MediaTracker(c);

4632N/A tracker.addImage(fImage, 0);

4632N/A try {

4632N/A tracker.waitForAll();

4632N/A } catch (final InterruptedException e) {}

4632N/A

4632N/A int width = fImage.getWidth(c);

4632N/A int height = fImage.getHeight(c);

4632N/A

4632N/A // Fix for bug 4212593 The Toolkit.createCustomCursor does not

4632N/A // check absence of the image of cursor

4632N/A // If the image is invalid, the cursor will be hidden (made completely

4929N/A // transparent).

4632N/A if (tracker.isErrorAny() || width < 0 || height < 0) {

4632N/A fHotspot.x = fHotspot.y = 0;

4929N/A width = height = 1;

4929N/A fImage = createTransparentImage(width, height);

4769N/A } else {

4929N/A // Scale image to nearest supported size

4929N/A final Dimension nativeSize = toolkit.getBestCursorSize(width, height);

4929N/A if (nativeSize.width != width || nativeSize.height != height) {

4929N/A fImage = fImage.getScaledInstance(nativeSize.width, nativeSize.height, Image.SCALE_DEFAULT);

4929N/A width = nativeSize.width;

4929N/A height = nativeSize.height;

4929N/A }

4632N/A }

4632N/A

4632N/A // NOTE: this was removed for 3169146, but in 1.5 the JCK tests for an exception and fails if one isn't thrown.

4632N/A // See what JBuilder does.

4632N/A // Verify that the hotspot is within cursor bounds.

4632N/A if (fHotspot.x >= width || fHotspot.y >= height || fHotspot.x < 0 || fHotspot.y < 0) {

4632N/A throw new IndexOutOfBoundsException("invalid hotSpot");

4632N/A }

4632N/A

4632N/A // Must normalize the hotspot

4632N/A if (fHotspot.x >= width) {

4632N/A fHotspot.x = width - 1; // it is zero based.

4632N/A } else if (fHotspot.x < 0) {

4632N/A fHotspot.x = 0;

4632N/A }

4632N/A if (fHotspot.y >= height) {

4632N/A fHotspot.y = height - 1; // it is zero based.

4632N/A } else if (fHotspot.y < 0) {

4632N/A fHotspot.y = 0;

4632N/A }

4632N/A }

4632N/A

4929N/A private static BufferedImage createTransparentImage(int w, int h) {

4929N/A GraphicsEnvironment ge =

4929N/A GraphicsEnvironment.getLocalGraphicsEnvironment();

4929N/A GraphicsDevice gs = ge.getDefaultScreenDevice();

4929N/A GraphicsConfiguration gc = gs.getDefaultConfiguration();

4929N/A

4929N/A BufferedImage img = gc.createCompatibleImage(w, h, Transparency.BITMASK);

4929N/A Graphics2D g = (Graphics2D)img.getGraphics();

4929N/A g.setBackground(new Color(0, 0, 0, 0));

4929N/A g.clearRect(0, 0, w, h);

4929N/A g.dispose();

4929N/A

4929N/A return img;

4929N/A }

4929N/A

4632N/A public static Dimension getBestCursorSize(final int preferredWidth, final int preferredHeight) {

4632N/A // With Panther, cursors have no limit on their size. So give the client their

4632N/A // preferred size, but no larger than half the dimensions of the main screen

4632N/A // This will allow large cursors, but not cursors so large that they cover the

4632N/A // screen. Since solaris nor windows allow cursors this big, this shouldn't be

4632N/A // a limitation.

4632N/A // JCK triggers an overflow in the int -- if we get a bizarre value normalize it.

4632N/A final Dimension maxCursorSize = getMaxCursorSize();

4632N/A final Dimension d = new Dimension(Math.max(1, Math.abs(preferredWidth)), Math.max(1, Math.abs(preferredHeight)));

4632N/A return new Dimension(Math.min(d.width, maxCursorSize.width), Math.min(d.height, maxCursorSize.height));

4632N/A }

4632N/A

4632N/A // Called from native when the cursor is set

4632N/A CImage fCImage;

4632N/A long getImageData() {

4769N/A if (fCImage != null) {

4769N/A return fCImage.ptr;

4769N/A }

4769N/A

4929N/A try {

4929N/A fCImage = CImage.getCreator().createFromImage(fImage);

4929N/A if (fCImage == null) {

4929N/A // Something unexpected happened: CCustomCursor constructor

4929N/A // takes care of invalid cursor images, yet createFromImage()

4929N/A // failed to do its job. Return null to keep the cursor unchanged.

4632N/A return 0L;

4929N/A } else {

4929N/A return fCImage.ptr;

4632N/A }

4929N/A } catch (IllegalArgumentException iae) {

4929N/A // see comment above

4929N/A return 0L;

4632N/A }

4632N/A }

4632N/A

4632N/A Point getHotSpot() {

4632N/A return fHotspot;

4632N/A }

4632N/A}