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/*******************************************************************************
* Copyright (c) 2018 Red Hat 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:
* Red Hat - initial API and implementation
*******************************************************************************/
package org.eclipse.swt.tests.gtk.snippets;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Region;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.List;
import org.eclipse.swt.widgets.Shell;
/*
* Title: Bug 529431: [GTK3.10+] Snippet294 fails to draw Region
* How to run: launch snippet and look for the region set
* Bug description: anything without a red bg and circular inner regions is broken
* Expected results: the region is applied correctly
* GTK Version(s): GTK3.10+
*/
public class Bug529431_SetRegionTesting {
static int[] circle(int r, int offsetX, int offsetY) {
int[] polygon = new int[8 * r + 4];
// x^2 + y^2 = r^2
for (int i = 0; i < 2 * r + 1; i++) {
int x = i - r;
int y = (int)Math.sqrt(r*r - x*x);
polygon[2*i] = offsetX + x;
polygon[2*i+1] = offsetY + y;
polygon[8*r - 2*i - 2] = offsetX + x;
polygon[8*r - 2*i - 1] = offsetY - y;
}
return polygon;
}
public static void main(String[] args) {
final Display display = new Display();
final Shell shell = new Shell(display);
shell.setText("Regions on a Control");
shell.setLayout(new FillLayout());
shell.setBackground(display.getSystemColor(SWT.COLOR_DARK_RED));
/*
* Working: Canvas, Button, Shell, Combo, List, Spinner, DateTime, Text, ToolBar,
* CCombo, TabFolder
* Broken on 3.8: Link, Label, Scale, ProgressBar, ExpandBar, StyledText
* Broken on 3.22 (i.e. different from 3.8): Group, ProgressBar, Table/Tree, StyledText
*/
// Common widget with text case
List widget = new List (shell, SWT.None);
// widget.setText("Basic widget test");
widget.add("Basic widget test");
// Uncomment below to test a widget with items (ExpandBar, Table/Tree, etc)
// ExpandItem item = new ExpandItem (widget, SWT.None);
// item.setText("Item test");
// Original case form Snippet294
// Button b2 = new Button(widget, SWT.PUSH);
// b2.setText("Button with Regions");
// item.setControl(b2);
// Table/Tree type cases
// TableItem tableItem = new TableItem (widget, SWT.None);
// tableItem.setText("This is a table/tree item test with a longer string");
// TableItem tableItem2 = new TableItem (widget, SWT.None);
// tableItem2.setText("This is a second table/tree item test with a longer string");
// define a region that looks like a circle with two holes in ot
Region region = new Region();
region.add(circle(67, 87, 77));
region.subtract(circle(20, 87, 47));
region.subtract(circle(20, 87, 113));
// define the shape of the button using setRegion
widget.setRegion(region);
// Uncomment to test input handling
// b2.addListener(SWT.Selection, e -> shell.close());
shell.setSize(200,200);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
region.dispose();
display.dispose();
}
}
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