Cursor: create a color cursor from a source and a mask : Cursor « SWT JFace Eclipse « Java

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Java » SWT JFace Eclipse » CursorScreenshots 
Cursor: create a color cursor from a source and a mask
Cursor: create a color cursor from a source and a mask



/*
 * Cursor example snippet: create a color cursor from a source and a mask
 *
 * For a list of all SWT example snippets see
 * http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
 */
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Cursor;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.graphics.PaletteData;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

public class Snippet119 {

  static byte[] srcData = { (byte0x11(byte0x11(byte0x11,
      (byte0x00(byte0x00(byte0x11(byte0x11(byte0x11,
      (byte0x11(byte0x10(byte0x00(byte0x01(byte0x10,
      (byte0x00(byte0x01(byte0x11(byte0x11(byte0x00,
      (byte0x22(byte0x01(byte0x10(byte0x33(byte0x00,
      (byte0x11(byte0x10(byte0x02(byte0x22(byte0x01,
      (byte0x10(byte0x33(byte0x30(byte0x01(byte0x10,
      (byte0x22(byte0x22(byte0x01(byte0x10(byte0x33,
      (byte0x33(byte0x01(byte0x10(byte0x22(byte0x22,
      (byte0x01(byte0x10(byte0x33(byte0x33(byte0x01,
      (byte0x00(byte0x00(byte0x00(byte0x00(byte0x00,
      (byte0x00(byte0x00(byte0x00(byte0x01(byte0x11,
      (byte0x11(byte0x01(byte0x10(byte0x11(byte0x11,
      (byte0x10(byte0x01(byte0x11(byte0x11(byte0x01,
      (byte0x10(byte0x11(byte0x11(byte0x10(byte0x00,
      (byte0x00(byte0x00(byte0x00(byte0x00(byte0x00,
      (byte0x00(byte0x00(byte0x10(byte0x44(byte0x44,
      (byte0x01(byte0x10(byte0x55(byte0x55(byte0x01,
      (byte0x10(byte0x44(byte0x44(byte0x01(byte0x10,
      (byte0x55(byte0x55(byte0x01(byte0x10(byte0x04,
      (byte0x44(byte0x01(byte0x10(byte0x55(byte0x50,
      (byte0x01(byte0x11(byte0x00(byte0x44(byte0x01,
      (byte0x10(byte0x55(byte0x00(byte0x11(byte0x11,
      (byte0x10(byte0x00(byte0x01(byte0x10(byte0x00,
      (byte0x01(byte0x11(byte0x11(byte0x11(byte0x11,
      (byte0x00(byte0x00(byte0x11(byte0x11(byte0x11};

  static byte[] mskData = { (byte0x03(byte0xc0(byte0x1f,
      (byte0xf8(byte0x3f(byte0xfc(byte0x7f(byte0xfe,
      (byte0x7f(byte0xfe(byte0x7f(byte0xfe(byte0xff,
      (byte0xff(byte0xfe(byte0x7f(byte0xfe(byte0x7f,
      (byte0xff(byte0xff(byte0x7f(byte0xfe(byte0x7f,
      (byte0xfe(byte0x7f(byte0xfe(byte0x3f(byte0xfc,
      (byte0x1f(byte0xf8(byte0x03(byte0xc0 };

  public static void main(String[] args) {
    Display display = new Display();
    Color white = display.getSystemColor(SWT.COLOR_WHITE);
    Color black = display.getSystemColor(SWT.COLOR_BLACK);
    Color yellow = display.getSystemColor(SWT.COLOR_YELLOW);
    Color red = display.getSystemColor(SWT.COLOR_RED);
    Color green = display.getSystemColor(SWT.COLOR_GREEN);
    Color blue = display.getSystemColor(SWT.COLOR_BLUE);

    // Create a source ImageData of depth 4
    PaletteData palette = new PaletteData(new RGB[] { black.getRGB(),
        white.getRGB(), yellow.getRGB(), red.getRGB(), blue.getRGB(),
        green.getRGB() });
    ImageData sourceData = new ImageData(16164, palette, 1, srcData);

    // Create a mask ImageData of depth 1 (monochrome)
    palette = new PaletteData(new RGB[] { black.getRGB(), white.getRGB()});
    ImageData maskData = new ImageData(16161, palette, 1, mskData);

    // Set mask
    sourceData.maskData = maskData.data;
    sourceData.maskPad = maskData.scanlinePad;

    // Create cursor
    Cursor cursor = new Cursor(display, sourceData, 1010);

    // Remove mask to draw them separately just to show what they look like
    sourceData.maskData = null;
    sourceData.maskPad = -1;

    Shell shell = new Shell(display);
    final Image source = new Image(display, sourceData);
    final Image mask = new Image(display, maskData);
    shell.addPaintListener(new PaintListener() {
      public void paintControl(PaintEvent e) {
        GC gc = e.gc;
        int x = 10, y = 10;
        String stringSource = "source: ";
        String stringMask = "mask: ";
        gc.drawString(stringSource, x, y);
        gc.drawString(stringMask, x, y + 30);
        x += Math.max(gc.stringExtent(stringSource).x, gc
            .stringExtent(stringMask).x);
        gc.drawImage(source, x, y);
        gc.drawImage(mask, x, y + 30);
      }
    });
    shell.setSize(150150);
    shell.open();
    shell.setCursor(cursor);

    while (!shell.isDisposed()) {
      if (!display.readAndDispatch())
        display.sleep();
    }
    cursor.dispose();
    source.dispose();
    mask.dispose();
    display.dispose();
  }
}

           
       
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