Bug 558222 - snippet with example of the "black" icon

Change-Id: Iff688b36b8c044abe9155320f2c2ca560493e36f
Signed-off-by: Andrey Loskutov <loskutov@gmx.de>

1 files changed, 89 insertions, 0 deletions

diff --git a/tests/org.eclipse.swt.tests.gtk/ManualTests/org/eclipse/swt/tests/gtk/snippets/Bug558222_BlackIcon.java b/tests/org.eclipse.swt.tests.gtk/ManualTests/org/eclipse/swt/tests/gtk/snippets/Bug558222_BlackIcon.java
new file mode 100644
index 0000000000..e7f167b49d
--- /dev/null
+++ b/tests/org.eclipse.swt.tests.gtk/ManualTests/org/eclipse/swt/tests/gtk/snippets/Bug558222_BlackIcon.java
@@ -0,0 +1,89 @@
+/*******************************************************************************
+ * Copyright (c) 2019 Andrey Loskutov and others.
+ *
+ * This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License 2.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *     Andrey Loskutov (loskutov@gmx.de) - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.swt.tests.gtk.snippets;
+
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.graphics.Color;
+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.graphics.Rectangle;
+import org.eclipse.swt.widgets.Display;
+import org.eclipse.swt.widgets.Shell;
+import org.eclipse.swt.widgets.ToolBar;
+import org.eclipse.swt.widgets.ToolItem;
+
+public class Bug558222_BlackIcon {
+	public static void main(String[] args) {
+		Display display = new Display();
+		Shell shell = new Shell(display);
+		shell.setText("See org.eclipse.help.ui.internal.views.HelpTray.createImages()");
+
+		int[] shape = new int[] {
+				3,  3, 5,  3, 7,  5, 8,  5, 10, 3, 12, 3,
+				12, 5, 10, 7, 10, 8, 12,10, 12,12,
+				10,12, 8, 10, 7, 10, 5, 12, 3, 12,
+				3, 10, 5,  8, 5,  7, 3,  5
+		};
+
+		/*
+		 * Use magenta as transparency color since it is used infrequently.
+		 */
+		Color border = display.getSystemColor(SWT.COLOR_WIDGET_DARK_SHADOW);
+		Color background = display.getSystemColor(SWT.COLOR_LIST_BACKGROUND);
+		Color backgroundHot = new Color(display, new RGB(252, 160, 160));
+		Color transparent = display.getSystemColor(SWT.COLOR_MAGENTA);
+
+		PaletteData palette = new PaletteData(new RGB[] { transparent.getRGB(), border.getRGB(), background.getRGB(), backgroundHot.getRGB() });
+		ImageData data = new ImageData(16, 16, 8, palette);
+		data.transparentPixel = 0;
+
+		Image normal = new Image(display, data);
+		normal.setBackground(transparent);
+		GC gc = new GC(normal);
+		gc.setBackground(background);
+		gc.fillPolygon(shape);
+		gc.setForeground(border);
+		gc.drawPolygon(shape);
+		gc.dispose();
+
+		Image hover = new Image(display, data);
+		hover.setBackground(transparent);
+		gc = new GC(hover);
+		gc.setBackground(backgroundHot);
+		gc.fillPolygon(shape);
+		gc.setForeground(border);
+		gc.drawPolygon(shape);
+		gc.dispose();
+
+		backgroundHot.dispose();
+
+		ToolBar bar = new ToolBar (shell, SWT.BORDER | SWT.FLAT);
+		Rectangle clientArea = shell.getClientArea ();
+		bar.setBounds (clientArea.x, clientArea.y, 200, 32);
+		final ToolItem item = new ToolItem(bar, SWT.PUSH);
+		item.setImage(normal);
+		item.setHotImage(hover);
+
+		shell.open();
+		while (!shell.isDisposed()) {
+			if (!display.readAndDispatch()) {
+				display.sleep();
+			}
+		}
+		display.dispose();
+	}
+}
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