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/*******************************************************************************
* Copyright (c) 2007 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.swt.snippets;
/*
* create a circular shell from a path.
*
* For a list of all SWT example snippets see
* http://www.eclipse.org/swt/snippets/
*/
import org.eclipse.swt.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.widgets.*;
public class Snippet285 {
static void loadPath(Region region, float[] points, byte[] types) {
int start = 0, end = 0;
for (int i = 0; i < types.length; i++) {
switch (types[i]) {
case SWT.PATH_MOVE_TO: {
if (start != end) {
int n = 0;
int[] temp = new int[end - start];
for (int k = start; k < end; k++) {
temp[n++] = Math.round(points[k]);
}
region.add(temp);
}
start = end;
end += 2;
break;
}
case SWT.PATH_LINE_TO: {
end += 2;
break;
}
case SWT.PATH_CLOSE: {
if (start != end) {
int n = 0;
int[] temp = new int[end - start];
for (int k = start; k < end; k++) {
temp[n++] = Math.round(points[k]);
}
region.add(temp);
}
start = end;
break;
}
}
}
}
public static void main(String[] args) {
int width = 250, height = 250;
final Display display = new Display();
final Shell shell = new Shell(display, SWT.NO_TRIM);
final Path path = new Path(display);
path.addArc(0, 0, width, height, 0, 360);
Path path2 = new Path(display, path, 0.1f);
path.dispose();
PathData data = path2.getPathData();
path2.dispose();
Region region = new Region(display);
loadPath(region, data.points, data.types);
shell.setRegion(region);
Listener listener = new Listener() {
public void handleEvent(Event event) {
switch (event.type) {
case SWT.MouseDown: {
shell.dispose();
break;
}
case SWT.Paint: {
GC gc = event.gc;
Rectangle rect = shell.getClientArea();
Pattern pattern = new Pattern(display, rect.x, rect.y
+ rect.height, rect.x + rect.width, rect.y, display
.getSystemColor(SWT.COLOR_BLUE), display
.getSystemColor(SWT.COLOR_WHITE));
gc.setBackgroundPattern(pattern);
gc.fillRectangle(rect);
pattern.dispose();
break;
}
}
}
};
shell.addListener(SWT.MouseDown, listener);
shell.addListener(SWT.Paint, listener);
shell.setSize(width, height);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
region.dispose();
display.dispose();
}
}
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