1 files changed, 77 insertions, 0 deletions
diff --git a/tests/org.eclipse.swt.tests.gtk/Bug Snippets/org/eclipse/swt/tests/gtk/snippets/Bug545587_TooltipColor.java b/tests/org.eclipse.swt.tests.gtk/Bug Snippets/org/eclipse/swt/tests/gtk/snippets/Bug545587_TooltipColor.java
new file mode 100644
index 0000000000..c123889d75
--- /dev/null
+++ b/tests/org.eclipse.swt.tests.gtk/Bug Snippets/org/eclipse/swt/tests/gtk/snippets/Bug545587_TooltipColor.java
@@ -0,0 +1,77 @@
+/*******************************************************************************
+ * Copyright (c) 2019 Syntevo and others. All rights reserved.
+ * The contents of this file are made available under the terms
+ * of the GNU Lesser General Public License (LGPL) Version 2.1 that
+ * accompanies this distribution (lgpl-v21.txt).  The LGPL is also
+ * available at http://www.gnu.org/licenses/lgpl.html.  If the version
+ * of the LGPL at http://www.gnu.org is different to the version of
+ * the LGPL accompanying this distribution and there is any conflict
+ * between the two license versions, the terms of the LGPL accompanying
+ * this distribution shall govern.
+ *
+ * Contributors:
+ *     Syntevo - initial implementation
+ *******************************************************************************/
+package org.eclipse.swt.tests.gtk.snippets;
+
+import org.eclipse.swt.*;
+import org.eclipse.swt.graphics.*;
+import org.eclipse.swt.layout.*;
+import org.eclipse.swt.widgets.*;
+
+import java.lang.reflect.Method;
+
+public class Bug545587_TooltipColor {
+	static void updateLabel(Label a_Label) {
+		Display display = a_Label.getDisplay();
+
+		// Force recalculate colors
+		// Can be used with setting custom CSS in GTK inspector
+		try {
+			final Method setBackground = Display.class.getDeclaredMethod("initializeSystemColors");
+			setBackground.setAccessible(true);
+			setBackground.invoke(display);
+		} catch (Throwable ex) {
+			ex.printStackTrace();
+		}
+
+		Color backColor = display.getSystemColor(SWT.COLOR_INFO_BACKGROUND);
+		Color foreColor = display.getSystemColor(SWT.COLOR_INFO_FOREGROUND);
+
+		a_Label.setBackground(backColor);
+		a_Label.setForeground(foreColor);
+
+		String labelText = String.format(
+				"\n\nThese are expected tooltip's colors:\nback=%s\nfore=%s\n\nNow see tooltip and compare.",
+				backColor.toString(),
+				foreColor.toString()
+		);
+		a_Label.setText(labelText);
+	}
+
+	public static void main(String[] args) {
+		final Display display = new Display();
+
+		final Shell shell = new Shell(display, SWT.SHELL_TRIM);
+		shell.setLayout(new FillLayout());
+		shell.setSize(300, 200);
+
+		final Label label = new Label(shell, SWT.WRAP | SWT.CENTER);
+		label.addListener(SWT.MouseDown, event -> updateLabel(label));
+		updateLabel(label);
+
+		final ToolTip tooltip = new ToolTip (shell, 0);
+		tooltip.setText("Example tooltip text");
+		tooltip.setVisible(true);
+
+		shell.open();
+
+		while (!shell.isDisposed()) {
+			if (!display.readAndDispatch()) {
+				display.sleep();
+			}
+		}
+
+		display.dispose();
+	}
+}