| /******************************************************************************* |
| * 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.events.MouseMoveListener; |
| import org.eclipse.swt.events.PaintEvent; |
| import org.eclipse.swt.events.PaintListener; |
| import org.eclipse.swt.graphics.Color; |
| import org.eclipse.swt.graphics.Rectangle; |
| import org.eclipse.swt.layout.FillLayout; |
| import org.eclipse.swt.widgets.Canvas; |
| import org.eclipse.swt.widgets.Display; |
| import org.eclipse.swt.widgets.Shell; |
| |
| /** |
| * This code reproduce GTK's setToolTipText(null) problem. |
| */ |
| public class Bug85131_ToolTipSetNull |
| { |
| public static void main(String[]v) |
| { |
| Display disp = Display.getDefault(); |
| final Shell shell = new Shell(disp, SWT.DIALOG_TRIM|SWT.RESIZE ); |
| shell.setText( "Test Tooltip" ); |
| |
| shell.setLayout( new FillLayout() ); |
| |
| final Canvas canvas = new Canvas( shell, SWT.NONE ); |
| canvas.addPaintListener( new PaintListener() { |
| @Override |
| public void paintControl(PaintEvent e) |
| { |
| Rectangle r = canvas.getClientArea(); |
| int wm = r.width/8, w2 = r.width/2; |
| int hm = r.height/8; |
| int rw = w2-wm, rh = r.height-2*hm; |
| |
| e.gc.setBackground( new Color(null,200,0,0) ); |
| e.gc.fillRectangle( 0,hm,w2,rh); |
| e.gc.setBackground( new Color(null,0,0,200) ); |
| e.gc.fillRectangle( w2,hm+hm,rw+wm,rh-hm); |
| } |
| }); |
| canvas.addMouseMoveListener( new MouseMoveListener() { |
| @Override |
| public void mouseMove(org.eclipse.swt.events.MouseEvent |
| e) { |
| int mx = e.x; |
| int my = e.y; |
| |
| Rectangle r = canvas.getClientArea(); |
| int wm = r.width/8, w2 = r.width/2; |
| int hm = r.height/8; |
| int rw = w2-wm, rh = r.height-2*hm; |
| |
| String tip = null; |
| if( mx>=0 && mx <= 0+w2 && my >= hm && my <= hm+rh ) |
| { |
| tip = "Red Rectangle"; |
| } |
| else if( mx>=w2 && mx <= w2+rw+wm && my >= hm+hm && my <= |
| hm+rh ) |
| { |
| tip = "Blue Rectangle"; |
| } |
| System.out.println("setToolTipText("+tip+")"); |
| canvas.setToolTipText( tip ); |
| } |
| }); |
| |
| shell.setSize( 300, 200 ); |
| shell.open(); |
| |
| while (!shell.isDisposed()) |
| if (!disp.readAndDispatch()) |
| disp.sleep(); |
| } |
| } |