http://blog.csdn.net/evilinside/article/details/5153657
实现图形缩放的步骤：
1 protected void configureGraphicalViewer() { 2 super.configureGraphicalViewer(); 3 4 viewer = getGraphicalViewer(); 5
1.提供缩放能力。 设置根图形的RootEditPart为ScalableRootEditPart：
6 ScalableRootEditPart rootEditPart = new ScalableRootEditPart(); 7 viewer.setRootEditPart(rootEditPart); 8
2.实际缩放的实现。ScalableRootEditPart 提供了一个 ZoomManager
类，可以被用来管理图形的最大化，最小化等操作。对图形的缩放操作实际上是通过这个
ZoomManager 实现的。
9 ZoomManager zoomManager = rootEditPart.getZoomManager(); //获得ZoomManager
//注册放大Action 10 IAction action = new ZoomInAction(zoomManager); 11 getActionRegistry().registerAction(action);
//注册缩小Action 12 action = new ZoomOutAction(zoomManager); 13 getActionRegistry().registerAction(action); 14 15 viewer.setEditPartFactory(new GraphicalPartFactory());这个是用来干嘛的？？ 16 17 ContextMenuProvider provider = new DiagramContextMenuProvider(viewer, 18 getActionRegistry()); 19 viewer.setContextMenu(provider); 20 getSite().registerContextMenu(provider, viewer); 21 22 KeyHandler keyHandler = new KeyHandler(); 23 keyHandler.put(KeyStroke.getPressed(SWT.DEL, 127, 0), 24 getActionRegistry().getAction(ActionFactory.DELETE.getId())); 25 getGraphicalViewer().setKeyHandler( 26 new GraphicalViewerKeyHandler(getGraphicalViewer()) 27 .setParent(keyHandler)); 28 29 }
1 package ttcn3.gft.editor.ui.actions; 2 3 import org.eclipse.gef.ui.actions.ActionBarContributor; 4 5 import org.eclipse.gef.ui.actions.DeleteRetargetAction; 6 import org.eclipse.gef.ui.actions.GEFActionConstants; 7 import org.eclipse.gef.ui.actions.RedoRetargetAction; 8 import org.eclipse.gef.ui.actions.UndoRetargetAction; 9 import org.eclipse.gef.ui.actions.ZoomInRetargetAction; 10 import org.eclipse.gef.ui.actions.ZoomOutRetargetAction; 11 import org.eclipse.jface.action.IToolBarManager; 12 import org.eclipse.jface.action.Separator; 13 import org.eclipse.ui.IEditorPart; 14 import org.eclipse.ui.actions.ActionFactory; 15 import org.eclipse.ui.actions.RetargetAction; 16 17 import ttcn3.gft.editor.action.FilterAction; 18 import ttcn3.gft.editor.editor.DiagramEditor; 19 import ttcn3.gft.editor.ui.helper.IImageKey; 20 21 /** 22 * action bar for diagram editor 23 * 24 * @author user 25 * 26 */ 27 28 public class TTCNActionBarContributor extends ActionBarContributor { 29 3.添加缩放工具按钮 30 @Override 31 protected void buildActions() { 32 // TODO Auto-generated method stub 33 RetargetAction retargetAction = new RetargetAction(ActionFactory.SAVE.getId(), "SAVE"); 35 retargetAction.setImageDescriptor(IImageKey.getImageDescriptor(IImageKey.KEY_SAVE)); 37 addRetargetAction(retargetAction); 38 39 retargetAction = new RetargetAction(ActionFactory.COPY.getId(), "COPY"); 40 retargetAction.setImageDescriptor(IImageKey.getImageDescriptor(IImageKey.KEY_COPY)); 42 addRetargetAction(retargetAction); 43 44 retargetAction = new RetargetAction(ActionFactory.PASTE.getId(),"PASTE"); 46 retargetAction.setImageDescriptor(IImageKey.getImageDescriptor(IImageKey.KEY_PASTE)); 48 addRetargetAction(retargetAction); 49 50 retargetAction = new UndoRetargetAction(); 51 addRetargetAction(retargetAction); 52 53 retargetAction = new RedoRetargetAction(); 54 addRetargetAction(retargetAction); 55 56 retargetAction = new DeleteRetargetAction(); 57 retargetAction.setImageDescriptor(IImageKey.getImageDescriptor(IImageKey.KEY_DELETE)); 59 addRetargetAction(retargetAction); 60 61 addRetargetAction(new ZoomInRetargetAction()); 62 addRetargetAction(new ZoomOutRetargetAction()); 63 64 retargetAction = new RetargetAction(GenerateAction.getID(), "Generate"); 65 retargetAction.setImageDescriptor(IImageKey.getImageDescriptor(IImageKey.KEY_GENERATE)); 67 addRetargetAction(retargetAction); 68 69 retargetAction = new RetargetAction(FilterAction.getID(), "Filter"); 70 retargetAction.setImageDescriptor(IImageKey.getImageDescriptor(IImageKey.KEY_FILTER)); 72 addRetargetAction(retargetAction); 73 74 retargetAction = new RetargetAction(CompileAction.getID(), "Compile"); 75 retargetAction.setImageDescriptor(IImageKey.getImageDescriptor(IImageKey.KEY_COMPILE)); 77 addRetargetAction(retargetAction); 78 79 retargetAction = new RetargetAction(ActionFactory.PRINT.getId(),"Print"); 81 retargetAction.setImageDescriptor(IImageKey.getImageDescriptor(IImageKey.KEY_PRINT)); 83 addRetargetAction(retargetAction); 84 85 } 86 87 @Override 88 protected void declareGlobalActionKeys() { 89 // TODO Auto-generated method stub 90 91 } 92 93 @Override 94 public void contributeToToolBar(IToolBarManager toolBarManager) { 95 toolBarManager.add(getAction(ActionFactory.SAVE.getId())); 96 toolBarManager.add(new Separator()); 97 98 toolBarManager.add(getAction(ActionFactory.COPY.getId())); 99 toolBarManager.add(getAction(ActionFactory.PASTE.getId())); 100 toolBarManager.add(new Separator()); 101 102 toolBarManager.add(getAction(ActionFactory.UNDO.getId())); 103 toolBarManager.add(getAction(ActionFactory.REDO.getId())); 104 toolBarManager.add(getAction(ActionFactory.DELETE.getId())); 105 toolBarManager.add(new Separator()); 106 107 toolBarManager.add(getAction(GEFActionConstants.ZOOM_IN)); 108 toolBarManager.add(getAction(GEFActionConstants.ZOOM_OUT)); 109 toolBarManager.add(new Separator()); 110 111 toolBarManager.add(getAction(FilterAction.getID())); 112 toolBarManager.add(getAction(GenerateAction.getID())); 113 toolBarManager.add(getAction(CompileAction.getID())); 114 toolBarManager.add(getAction(ActionFactory.PRINT.getId())); 115 116 // toolBarManager.add(new ZoomComboContributionItem(getPage())); 117 } 118 119 @Override 120 public void setActiveEditor(IEditorPart editor) { 121 // TODO Auto-generated method stub 122 super.setActiveEditor(editor); 123 124 if (editor instanceof DiagramEditor) { 125 getActionBars().getStatusLineManager().setMessage( 126 ((DiagramEditor) editor).getPartName()); 127 } 128 } 129 }