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import org.eclipse.swt.SWT;
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.layout.FillLayout;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class ImageRotate {
public static void main(String[] args) {
final Display display = new Display();
final Shell shell = new Shell(display);
shell.setText("Canvas Example");
shell.setLayout(new FillLayout());
Canvas canvas = new Canvas(shell, SWT.NONE);
canvas.addPaintListener(new PaintListener() {
public void paintControl(PaintEvent e) {
Image image = new Image(display, "yourFile.gif");
ImageData sd = image.getImageData();
ImageData dd = new ImageData(sd.height, sd.width, sd.depth, sd.palette);
int style = SWT.UP;
boolean up = (style & SWT.UP) == SWT.UP;
// Run through the horizontal pixels
for (int sx = 0; sx < sd.width; sx++) {
// Run through the vertical pixels
for (int sy = 0; sy < sd.height; sy++) {
// Determine where to move pixel to in destination image data
int dx = up ? sy : sd.height - sy - 1;
int dy = up ? sd.width - sx - 1 : sx;
// Swap the x, y source data to y, x in the destination
dd.setPixel(dx, dy, sd.getPixel(sx, sy));
}
}
// Create the vertical image
Image vertical = new Image(display, dd);
// Draw the vertical image onto the original GC
e.gc.drawImage(vertical, 10, 10);
vertical.dispose();
}
});
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
display.sleep();
}
}
display.dispose();
}
}
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