bundles/org.simantics.g2d/src/org/simantics/g2d/chassis/SWTChassis.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.chassis;\r
  13 \r
  14 import java.awt.Component;\r
  15 \r
  16 import org.eclipse.swt.graphics.Color;\r
  17 import org.eclipse.swt.widgets.Composite;\r
  18 import org.eclipse.swt.widgets.Display;\r
  19 import org.eclipse.ui.IEditorPart;\r
  20 import org.eclipse.ui.IWorkbenchPage;\r
  21 import org.eclipse.ui.IWorkbenchWindow;\r
  22 import org.simantics.g2d.canvas.ICanvasContext;\r
  23 import org.simantics.g2d.event.adapter.SWTFocusAdapter;\r
  24 import org.simantics.g2d.event.adapter.SWTKeyEventAdapter;\r
  25 import org.simantics.g2d.event.adapter.SWTMouseEventAdapter;\r
  26 import org.simantics.utils.datastructures.hints.IHintContext;\r
  27 import org.simantics.utils.datastructures.hints.IHintContext.Key;\r
  28 import org.simantics.utils.datastructures.hints.IHintContext.KeyOf;\r
  29 import org.simantics.utils.threads.IThreadWorkQueue;\r
  30 import org.simantics.utils.ui.SWTAWTComponent;\r
  31 \r
  32 /**\r
  33  * SWT Composite based chassis\r
  34  * \r
  35  * User must invoke CompositeChassis.syncPopulate() after constructions.\r
  36  * \r
  37  * @author Toni Kalajainen\r
  38  */\r
  39 public class SWTChassis extends SWTAWTComponent implements ICanvasChassis {\r
  40 \r
  41     protected AWTChassis                                                        component;\r
  42     protected SWTMouseEventAdapter                                      mouseAdapter;\r
  43     protected SWTKeyEventAdapter                                        keyAdapter;\r
  44     protected SWTFocusAdapter                                           focusAdapter;\r
  45 \r
  46     /**\r
  47      * Tells the Composite where the canvas is installed.\r
  48      */\r
  49     public static final Key KEY_SWT_COMPOSITE = new KeyOf(Composite.class, "SWT_COMPOSITE");\r
  50 \r
  51     public static final Key KEY_SWT_DISPLAY = new KeyOf(Display.class, "SWT_DISPLAY");\r
  52 \r
  53     public static final Key KEY_WORKBENCHWINDOW = new KeyOf(IWorkbenchWindow.class, "WORKBENCH_WINDOW");\r
  54     public static final Key KEY_WORKBENCHPAGE = new KeyOf(IWorkbenchPage.class, "WORKBENCH_PAGE");\r
  55     public static final Key KEY_EDITORPART = new KeyOf(IEditorPart.class, "EDITORPART");\r
  56 \r
  57     public SWTChassis(Composite parent, int style) {\r
  58         super(parent, style);\r
  59     }\r
  60 \r
  61     @Override\r
  62     protected void doDispose() {\r
  63         if (component!=null)\r
  64             component.fireChassisClosed();\r
  65         super.doDispose();\r
  66     }\r
  67 \r
  68     @Override\r
  69     protected Component createSwingComponent() {\r
  70         component = new AWTChassis(false);\r
  71         return component;\r
  72     }\r
  73 \r
  74     /**\r
  75      * Run in SWT thread.\r
  76      * \r
  77      * @param canvasContext new ICanvasContext to add or null to remove\r
  78      */\r
  79     @Override\r
  80     public void setCanvasContext(ICanvasContext canvasContext) {\r
  81         assert component != null;\r
  82 \r
  83         // Unhook old context\r
  84         if (component.canvasContext!=null) {\r
  85             if (component.hintCtx != null) {\r
  86                 component.hintCtx.removeHint( KEY_SWT_COMPOSITE );\r
  87                 component.hintCtx.removeHint( KEY_SWT_DISPLAY );\r
  88             }\r
  89             // keyAdapter, mouseAdapter and focusAdapter may be null if\r
  90             // the underlying AWTChassis has already had its CanvasContext set\r
  91             // through other means than this method.\r
  92             if (keyAdapter != null) {\r
  93                 removeKeyListener(keyAdapter);\r
  94                 removeMouseWheelListener(mouseAdapter);\r
  95                 removeMouseMoveListener(mouseAdapter);\r
  96                 removeMouseTrackListener(mouseAdapter);\r
  97                 removeMouseListener(mouseAdapter);\r
  98                 removeFocusListener(focusAdapter);\r
  99             }\r
 100         }\r
 101         component.setCanvasContext(canvasContext);\r
 102         // Hook new context\r
 103         if (canvasContext!=null) {\r
 104             if (component.hintCtx != null) {\r
 105                 component.hintCtx.setHint( KEY_SWT_COMPOSITE, this);\r
 106                 component.hintCtx.setHint( KEY_SWT_DISPLAY, this.getDisplay());\r
 107             }\r
 108             mouseAdapter = new SWTMouseEventAdapter(canvasContext, canvasContext.getEventQueue());\r
 109             keyAdapter = new SWTKeyEventAdapter(canvasContext, canvasContext.getEventQueue());\r
 110             focusAdapter = new SWTFocusAdapter(canvasContext, canvasContext.getEventQueue());\r
 111             addKeyListener(keyAdapter);\r
 112             addMouseWheelListener(mouseAdapter);\r
 113             addMouseMoveListener(mouseAdapter);\r
 114             addMouseTrackListener(mouseAdapter);\r
 115             addMouseListener(mouseAdapter);\r
 116             addFocusListener(focusAdapter);\r
 117         }\r
 118     }\r
 119 \r
 120     @Override\r
 121     public AWTChassis getAWTComponent() {\r
 122         return component;\r
 123     }\r
 124 \r
 125     @Override\r
 126     public ICanvasContext getCanvasContext() {\r
 127         return component.canvasContext;\r
 128     }\r
 129 \r
 130     @Override\r
 131     public void addChassisListener(IThreadWorkQueue thread, IChassisListener listener) {\r
 132         component.addChassisListener(thread, listener);\r
 133     }\r
 134 \r
 135     @Override\r
 136     public void removeChassisListener(IThreadWorkQueue thread, IChassisListener listener) {\r
 137         component.removeChassisListener(thread, listener);\r
 138     }\r
 139 \r
 140     @Override\r
 141     public void addChassisListener(IChassisListener listener) {\r
 142         component.addChassisListener(listener);\r
 143     }\r
 144 \r
 145     @Override\r
 146     public void removeChassisListener(IChassisListener listener) {\r
 147         component.removeChassisListener(listener);\r
 148     }\r
 149 \r
 150     @Override\r
 151     public IHintContext getHintContext() {\r
 152         return component.hintCtx;\r
 153     }\r
 154 \r
 155     @Override\r
 156     public void setBackground(Color color) {\r
 157         super.setBackground(color);\r
 158         if (component != null) {\r
 159             java.awt.Color awtColor = null;\r
 160             if (color != null)\r
 161                 awtColor = new java.awt.Color(color.getRed(), color.getGreen(), color.getBlue());\r
 162             component.setBackground(awtColor);\r
 163         }\r
 164     }\r
 165 \r
 166 }\r