bundles/org.simantics.g2d/src/org/simantics/g2d/gallery/GalleryTooltipProvider.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management
   3  * in Industry THTH ry.
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.g2d.gallery;
  13
  14 import java.awt.Canvas;
  15 import java.awt.Color;
  16 import java.awt.Dimension;
  17 import java.awt.Frame;
  18 import java.awt.Graphics;
  19 import java.awt.Image;
  20
  21 import javax.swing.BorderFactory;
  22 import javax.swing.BoxLayout;
  23 import javax.swing.JLabel;
  24 import javax.swing.JPanel;
  25
  26 import org.simantics.g2d.element.IElement;
  27 import org.simantics.g2d.tooltip.AWTTooltipProvider;
  28 import org.simantics.utils.datastructures.hints.IHintContext.Key;
  29 import org.simantics.utils.datastructures.hints.IHintContext.KeyOf;
  30
  31 /**
  32  * GalleryViewers tooltip provider
  33  *
  34  * @author Marko Luukkainen <marko.luukkainen@vtt.fi>
  35  *
  36  */
  37 public class GalleryTooltipProvider extends AWTTooltipProvider {
  38
  39         public static Key TOOLTIP_TEXT = new KeyOf(String.class, "TOOLTIP_TEXT");
  40         public static Key TOOLTIP_IMAGE = new KeyOf(Image.class, "TOOLTIP_IMAGE");
  41
  42         @Override
  43         public void constructPopup(Frame frame,IElement element) {
  44                 String text = element.getHint(TOOLTIP_TEXT);
  45                 final Image image = element.getHint(TOOLTIP_IMAGE);
  46                 if (text == null && image == null)
  47                         return;
  48
  49                 frame.setLayout(new BoxLayout(frame, BoxLayout.X_AXIS));
  50                 JPanel panel = new JPanel();
  51                 panel.setLayout(new BoxLayout(panel, BoxLayout.X_AXIS));
  52                 Color c = new Color(255, 255, 220);
  53                 panel.setBackground(c);
  54                 panel.setBorder(BorderFactory.createLineBorder(Color.black));
  55
  56                 if (image != null) {
  57                         Canvas canvas = new Canvas() {
  58                                 private static final long serialVersionUID = -7357041194563374338L;
  59
  60                                 @Override
  61                                 public void paint(Graphics g) {
  62                                         super.paint(g);
  63                                         g.drawImage(image, 0, 0, null);
  64                                 }
  65
  66                                 @Override
  67                                 public Dimension getSize() {
  68                                         return new Dimension(image.getWidth(null), image.getHeight(null));
  69                                 }
  70
  71                                 @Override
  72                                 public Dimension getSize(Dimension rv) {
  73                                         if (rv == null)
  74                                                 rv = new Dimension();
  75                                         rv.width = image.getWidth(null);
  76                                         rv.height = image.getHeight(null);
  77                                         return rv;
  78                                 }
  79                         };
  80                         panel.add(canvas);
  81                 }
  82                 if (text != null) {
  83                         JLabel label = new JLabel(text);
  84                         panel.add(label);
  85                 }
  86                 frame.add(panel);
  87
  88         }
  89
  90 }