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Categories / Java by API / Org Eclipse Swt Graphics

 

Image

import org.eclipse.swt.events.PaintEvent; import org.eclipse.swt.events.PaintListener; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.graphics.ImageData; import org.eclipse.swt.graphics.Rectangle; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; public class MainClass {   public static void main(String[] args) {   Display display = new Display();     final Shell shell = new Shell(display);     final Image image = new Image(display, new MainClass().getClass().getResourceAsStream(         "swt.png"));     System.out.println(image.getImageData().scanlinePad);     image.getImageData().scanlinePad = 40;     System.out.println(image.getImageData().scanlinePad);     shell.addPaintListener(new PaintListener() {       public void paintControl(PaintEvent event) {         event.gc.drawImage(image, 0, 0);         Rectangle rect = shell.getClientArea();         ImageData data = image.getImageData();         int srcX = data.width / 4;         int srcY = data.height / 4;         int srcWidth = data.width / 2;         int srcHeight = data.height / 2;         int destWidth = 2 * srcWidth;         int destHeight = 2 * srcHeight;         event.gc.drawImage(image, srcX, srcY, srcWidth, srcHeight, rect.width             - destWidth, rect.height - destHeight, destWidth, destHeight);       }     });     shell.setText("Draw Images");     shell.open();     while (!shell.isDisposed()) {       if (!display.readAndDispatch()) {         display.sleep();       }     }     image.dispose();     display.dispose();   } }