Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.g2d / src / org / simantics / g2d / participant / SubCanvas.java

diff --git a/bundles/org.simantics.g2d/src/org/simantics/g2d/participant/SubCanvas.java b/bundles/org.simantics.g2d/src/org/simantics/g2d/participant/SubCanvas.java
new file mode 100644 (file)
index 0000000..016d8fb
--- /dev/null
+++ b/bundles/org.simantics.g2d/src/org/simantics/g2d/participant/SubCanvas.java
@@ -0,0 +1,118 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
+ * in Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ *     VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.g2d.participant;\r
+\r
+import org.simantics.g2d.canvas.Hints;\r
+import org.simantics.g2d.canvas.ICanvasContext;\r
+import org.simantics.g2d.canvas.IMouseCaptureContext;\r
+import org.simantics.g2d.canvas.IMouseCursorContext;\r
+import org.simantics.g2d.canvas.IContentContext;\r
+import org.simantics.g2d.canvas.IContentContext.IContentListener;\r
+import org.simantics.g2d.canvas.impl.AbstractCanvasParticipant;\r
+import org.simantics.g2d.canvas.impl.DependencyReflection.Dependency;\r
+\r
+/**\r
+ * Subcanvas encapsulates a canvas (another) in one participant.\r
+ * \r
+ * \r
+ * @author Toni Kalajainen\r
+ */\r
+public class SubCanvas extends AbstractCanvasParticipant {\r
+\r
+       @Dependency TransformUtil util;\r
+\r
+       private boolean enabled = true;\r
+       private ICanvasContext superCtx = null;\r
+       \r
+       /** Sub-Canvas */\r
+       private ICanvasContext sub;\r
+       int eventPriority, paintPriority, hintPriority;\r
+       //IHintContext subHintStack;\r
+       IMouseCursorContext origSubCursorCtx;\r
+       IMouseCaptureContext origSubCaptureCtx;\r
+       \r
+       // Subcanvas has become dirty, make super canvas also dirty\r
+       IContentListener paintableCtxListener = new IContentListener() {\r
+\r
+               @Override\r
+               public void onDirty(IContentContext sender) {\r
+                       if (superCtx==null) return;\r
+                       superCtx.getContentContext().setDirty();\r
+               }\r
+       };\r
+       \r
+       public SubCanvas(ICanvasContext subCanvas, int eventPriority, int paintPriority, int hintPriority) {\r
+               assert(subCanvas!=null);\r
+               this.sub = subCanvas;\r
+               this.eventPriority = eventPriority;\r
+               this.paintPriority = paintPriority;\r
+               this.hintPriority = hintPriority;\r
+               //subHintStack = sub.getHintStack().createStackRead(sub.getDefaultHintContext());\r
+               \r
+//             subCanvas.getMouseCaptureContext().addMouseCaptureListener(new IMouseCaptureListener() {\r
+//                     @Override\r
+//                     public void onMouseCaptured(IMouseCaptureContext sender, int mouseId) {\r
+//                             if (superCtx==null) return;\r
+//                             superCtx.getMouseCaptureContext().\r
+//                     }\r
+//                     @Override\r
+//                     public void onMouseReleased(IMouseCaptureContext sender, int mouseId) {\r
+//                     }});\r
+       }\r
+       \r
+       @Override\r
+       public void addedToContext(ICanvasContext ctx) {\r
+               super.addedToContext(ctx);\r
+               superCtx = ctx;\r
+               if (enabled) enable();\r
+       }\r
+       \r
+       @Override\r
+       public void removedFromContext(ICanvasContext ctx) {\r
+               assert(superCtx==ctx);\r
+               if (enabled) disable();\r
+               superCtx = null;\r
+               super.removedFromContext(ctx);\r
+       }\r
+       \r
+       public void setEnabled(boolean enabled)\r
+       {\r
+               if (this.enabled == enabled) return;\r
+               if (enabled) enable(); else disable();\r
+       }\r
+       \r
+       void enable() {\r
+               superCtx.getEventHandlerStack().add(sub.getEventHandlerStack(), eventPriority);\r
+//             superCtx.getPainterStack().add(sub.getPainterStack(), paintPriority);\r
+               //superCtx.getHintStack().addHintContext(subHintStack, hintPriority);\r
+               sub.getContentContext().addPaintableContextListener(paintableCtxListener);\r
+               origSubCursorCtx = sub.getMouseCursorContext();\r
+               sub.setMouseCursorContext(getContext().getMouseCursorContext());\r
+               origSubCaptureCtx = sub.getMouseCaptureContext();\r
+               sub.setMouseCaptureContext(getContext().getMouseCaptureContext());\r
+               assert(sub.getDefaultHintContext().getHint(Hints.KEY_SUPER_CANVAS)==null);\r
+               //sub.getDefaultHintContext().setHint(Hints.KEY_SUPER_CANVAS, ctx);\r
+               this.enabled = true;\r
+       }\r
+       \r
+       void disable() {\r
+               sub.getDefaultHintContext().removeHint(Hints.KEY_SUPER_CANVAS);\r
+               sub.setMouseCaptureContext(origSubCaptureCtx);          \r
+               sub.setMouseCursorContext(origSubCursorCtx);\r
+               sub.getContentContext().removePaintableContextListener(paintableCtxListener);\r
+               //ctx.getHintStack().removeHintContext(subHintStack);\r
+//             superCtx.getPainterStack().remove(sub.getPainterStack());\r
+               superCtx.getEventHandlerStack().remove(sub.getEventHandlerStack());\r
+               this.enabled = false;\r
+       }\r
+\r
+}\r