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package sun.awt.windows;

import sun.awt.CustomCursor;
import java.awt.*;
import java.awt.image.*;
import sun.awt.image.ImageRepresentation;
import sun.awt.image.IntegerComponentRaster;
import sun.awt.image.ToolkitImage;

A class to encapsulate a custom image-based cursor.
Author: ThomasBall
See Also:
  • setCursor.setCursor
/** * A class to encapsulate a custom image-based cursor. * * @see Component#setCursor * @author ThomasBall */
@SuppressWarnings("serial") // JDK-implementation class final class WCustomCursor extends CustomCursor { WCustomCursor(Image cursor, Point hotSpot, String name) throws IndexOutOfBoundsException { super(cursor, hotSpot, name); } @Override protected void createNativeCursor(Image im, int[] pixels, int w, int h, int xHotSpot, int yHotSpot) { BufferedImage bimage = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB); Graphics g = bimage.getGraphics(); try { if (im instanceof ToolkitImage) { ImageRepresentation ir = ((ToolkitImage)im).getImageRep(); ir.reconstruct(ImageObserver.ALLBITS); } g.drawImage(im, 0, 0, w, h, null); } finally { g.dispose(); } Raster raster = bimage.getRaster(); DataBuffer buffer = raster.getDataBuffer(); // REMIND: native code should use ScanStride _AND_ width int[] data = ((DataBufferInt)buffer).getData(); byte[] andMask = new byte[w * h / 8]; int npixels = pixels.length; for (int i = 0; i < npixels; i++) { int ibyte = i / 8; int omask = 1 << (7 - (i % 8)); if ((pixels[i] & 0xff000000) == 0) { // Transparent bit andMask[ibyte] |= omask; } } { int ficW = raster.getWidth(); if( raster instanceof IntegerComponentRaster ) { ficW = ((IntegerComponentRaster)raster).getScanlineStride(); } createCursorIndirect( ((DataBufferInt)bimage.getRaster().getDataBuffer()).getData(), andMask, ficW, raster.getWidth(), raster.getHeight(), xHotSpot, yHotSpot); } } private native void createCursorIndirect(int[] rData, byte[] andMask, int nScanStride, int width, int height, int xHotSpot, int yHotSpot);
Return the current value of SM_CXCURSOR.
/** * Return the current value of SM_CXCURSOR. */
static native int getCursorWidth();
Return the current value of SM_CYCURSOR.
/** * Return the current value of SM_CYCURSOR. */
static native int getCursorHeight(); }