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package sun.awt.X11;

import sun.awt.X11CustomCursor;
import java.awt.*;

A class to encapsulate a custom image-based cursor.
Author: Thomas Ball, Bino George
See Also:
  • setCursor.setCursor
/** * A class to encapsulate a custom image-based cursor. * * @see Component#setCursor * @author Thomas Ball * @author Bino George */
@SuppressWarnings("serial") // JDK-implementation class public class XCustomCursor extends X11CustomCursor { public XCustomCursor(Image cursor, Point hotSpot, String name) throws IndexOutOfBoundsException { super(cursor, hotSpot, name); }
Returns the supported cursor size
/** * Returns the supported cursor size */
static Dimension getBestCursorSize(int preferredWidth, int preferredHeight) { // Fix for bug 4212593 The Toolkit.createCustomCursor does not // check absence of the image of cursor // We use XQueryBestCursor which accepts unsigned ints to obtain // the largest cursor size that could be dislpayed //Dimension d = new Dimension(Math.abs(preferredWidth), Math.abs(preferredHeight)); Dimension d; XToolkit.awtLock(); try { long display = XToolkit.getDisplay(); long root_window = XlibWrapper.RootWindow(display, XlibWrapper.DefaultScreen(display)); XlibWrapper.XQueryBestCursor(display,root_window, Math.abs(preferredWidth),Math.abs(preferredHeight),XlibWrapper.larg1,XlibWrapper.larg2); d = new Dimension(XlibWrapper.unsafe.getInt(XlibWrapper.larg1),XlibWrapper.unsafe.getInt(XlibWrapper.larg2)); if (preferredWidth > 0 && preferredHeight > 0) { d.width = Math.min(d.width, preferredWidth); d.height = Math.min(d.height, preferredHeight); } } finally { XToolkit.awtUnlock(); } return d; } protected void createCursor(byte[] xorMask, byte[] andMask, int width, int height, int fcolor, int bcolor, int xHotSpot, int yHotSpot) { XToolkit.awtLock(); try { long display = XToolkit.getDisplay(); long root_window = XlibWrapper.RootWindow(display, XlibWrapper.DefaultScreen(display)); long colormap = XToolkit.getDefaultXColormap(); XColor fore_color = new XColor(); fore_color.set_flags((byte) (XConstants.DoRed | XConstants.DoGreen | XConstants.DoBlue)); fore_color.set_red((short)(((fcolor >> 16) & 0x000000ff) << 8)); fore_color.set_green((short) (((fcolor >> 8) & 0x000000ff) << 8)); fore_color.set_blue((short)(((fcolor >> 0) & 0x000000ff) << 8)); XlibWrapper.XAllocColor(display,colormap,fore_color.pData); XColor back_color = new XColor(); back_color.set_flags((byte) (XConstants.DoRed | XConstants.DoGreen | XConstants.DoBlue)); back_color.set_red((short) (((bcolor >> 16) & 0x000000ff) << 8)); back_color.set_green((short) (((bcolor >> 8) & 0x000000ff) << 8)); back_color.set_blue((short) (((bcolor >> 0) & 0x000000ff) << 8)); XlibWrapper.XAllocColor(display,colormap,back_color.pData); long nativeXorMask = Native.toData(xorMask); long source = XlibWrapper.XCreateBitmapFromData(display,root_window,nativeXorMask,width,height); long nativeAndMask = Native.toData(andMask); long mask = XlibWrapper.XCreateBitmapFromData(display,root_window,nativeAndMask,width,height); long cursor = XlibWrapper.XCreatePixmapCursor(display,source,mask,fore_color.pData,back_color.pData,xHotSpot,yHotSpot); XlibWrapper.unsafe.freeMemory(nativeXorMask); XlibWrapper.unsafe.freeMemory(nativeAndMask); XlibWrapper.XFreePixmap(display,source); XlibWrapper.XFreePixmap(display,mask); back_color.dispose(); fore_color.dispose(); XGlobalCursorManager.setPData(this,cursor); } finally { XToolkit.awtUnlock(); } } }