bundles/org.simantics.g2d/src/org/simantics/g2d/tooltip/AWTTooltipProvider.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
   3  * in Industry THTH ry.\r
   4  * All rights reserved. This program and the accompanying materials\r
   5  * are made available under the terms of the Eclipse Public License v1.0\r
   6  * which accompanies this distribution, and is available at\r
   7  * http://www.eclipse.org/legal/epl-v10.html\r
   8  *\r
   9  * Contributors:\r
  10  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.simantics.g2d.tooltip;\r
  13 \r
  14 import java.awt.Frame;\r
  15 import java.awt.GraphicsDevice;\r
  16 import java.awt.GraphicsEnvironment;\r
  17 import java.awt.Rectangle;\r
  18 \r
  19 import javax.swing.SwingUtilities;\r
  20 \r
  21 import org.simantics.g2d.element.IElement;\r
  22 \r
  23 /**\r
  24  * AWT based tooltip.\r
  25  * \r
  26  * @author Marko Luukkainen <marko.luukkainen@vtt.fi>\r
  27  *\r
  28  */\r
  29 public abstract class AWTTooltipProvider implements TooltipProvider {\r
  30 \r
  31         private Frame frame;\r
  32         \r
  33         /**\r
  34          * Construct popup UI.\r
  35          * @param frame\r
  36          * @param element\r
  37          */\r
  38         public abstract void constructPopup(Frame frame,IElement element);\r
  39         \r
  40         @Override\r
  41         public void showTooltip(final IElement element, final int x, final int y) {\r
  42                 SwingUtilities.invokeLater(new Runnable() {     \r
  43                         @Override\r
  44                         public void run() {\r
  45                                 if (frame != null) {\r
  46                                         frame.setVisible(false);\r
  47                                         frame.dispose();\r
  48                                         frame = null;\r
  49                                 }\r
  50                                 \r
  51                                 frame = new Frame();\r
  52                                 frame.setFocusableWindowState(false);\r
  53                                 frame.setUndecorated(true);\r
  54                                 \r
  55                                 constructPopup(frame, element);\r
  56                                 \r
  57                                 frame.pack();\r
  58                                 \r
  59                                 setTooltipPosition(x,y);\r
  60                                 \r
  61                                 frame.setVisible(true);\r
  62                         }\r
  63                 });\r
  64         }\r
  65         \r
  66         /**\r
  67          * \r
  68          * @param x\r
  69          * @param y\r
  70          */\r
  71         private void setTooltipPosition(int x, int y) {\r
  72 \r
  73                 GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();\r
  74                 for (GraphicsDevice gd : ge.getScreenDevices()) {\r
  75                         Rectangle r = gd.getDefaultConfiguration().getBounds();\r
  76                         if (r.contains(x, y)) {\r
  77                                 Rectangle ttr = new Rectangle(x, y, frame.getWidth(), frame.getHeight());\r
  78                                 //ttr.y -= frame.getHeight();\r
  79                                 ttr.y += 24;\r
  80                                 if (!r.contains(ttr)) {\r
  81                                         ttr.y = Math.max(r.y, ttr.y);\r
  82                                         ttr.y = Math.min(r.y + r.height, ttr.y + ttr.height) - ttr.height;\r
  83                                         ttr.x = Math.max(r.x, ttr.x);\r
  84                                         ttr.x = Math.min(r.x + r.width, ttr.x + ttr.width) - ttr.width;\r
  85                                 }\r
  86                                 frame.setLocation(ttr.x,ttr.y);\r
  87                                 return;\r
  88                         }\r
  89                 }\r
  90         }\r
  91         \r
  92         \r
  93         @Override\r
  94         public void hideTooltip(IElement element) {\r
  95                 SwingUtilities.invokeLater(new Runnable() {     \r
  96                         @Override\r
  97                         public void run() {\r
  98                                 frame.setVisible(false);\r
  99                                 frame.dispose();\r
 100                                 frame = null;\r
 101                                 \r
 102                         }\r
 103                 });\r
 104         }\r
 105 }\r