Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.graphviz.ui / src / org / simantics / graphviz / ui / GraphvizComponent2.java

diff --git a/bundles/org.simantics.graphviz.ui/src/org/simantics/graphviz/ui/GraphvizComponent2.java b/bundles/org.simantics.graphviz.ui/src/org/simantics/graphviz/ui/GraphvizComponent2.java
new file mode 100644 (file)
index 0000000..3792f04
--- /dev/null
+++ b/bundles/org.simantics.graphviz.ui/src/org/simantics/graphviz/ui/GraphvizComponent2.java
@@ -0,0 +1,148 @@
+/*******************************************************************************\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.graphviz.ui;\r
+\r
+import java.awt.Canvas;\r
+import java.awt.Frame;\r
+import java.util.concurrent.atomic.AtomicBoolean;\r
+\r
+import javax.swing.SwingUtilities;\r
+\r
+import org.eclipse.swt.SWT;\r
+import org.eclipse.swt.awt.SWT_AWT;\r
+import org.eclipse.swt.widgets.Composite;\r
+import org.simantics.graphviz.Graph;\r
+import org.simantics.graphviz.continuation.Computation;\r
+import org.simantics.graphviz.continuation.Continuation;\r
+import org.simantics.graphviz.drawable.GraphDrawable2;\r
+import org.simantics.graphviz.drawable.ViewerCanvas;\r
+\r
+public class GraphvizComponent2 extends Composite {\r
+\r
+    Canvas canvas;\r
+    GraphDrawable2 drawable;\r
+    Graph graph;\r
+    AtomicBoolean initialized = new AtomicBoolean(false);\r
+    Frame frame;\r
+\r
+    public GraphvizComponent2(Composite parent, int style) {\r
+        super(parent, style | SWT.EMBEDDED | SWT.NO_BACKGROUND);\r
+\r
+        frame = SWT_AWT.new_Frame(this);\r
+\r
+        SwingUtilities.invokeLater(new Runnable() {\r
+\r
+            @Override\r
+            public void run() {\r
+                try {\r
+                    drawable = new GraphDrawable2();\r
+                    canvas = new ViewerCanvas(drawable);\r
+                    frame.add(canvas);\r
+                } finally {\r
+                    synchronized (initialized) {\r
+                        initialized.set(true);\r
+                        initialized.notifyAll();\r
+                    }\r
+                }\r
+            }\r
+\r
+        });\r
+    }\r
+\r
+    public void waitUntilInitialized() {\r
+        try {\r
+            synchronized (initialized) {\r
+                while (!initialized.get())\r
+                    initialized.wait();\r
+            }\r
+        } catch (InterruptedException e) {\r
+            throw new Error("GraphvizComponent AWT population interrupted for class " + this, e);\r
+        }\r
+    }\r
+\r
+    /**\r
+     * Sets a new graph to be drawn. This operation may take a while. It can\r
+     * be called from any thread. Automatically redraws the component.\r
+     * @param graph\r
+     */\r
+    public Computation<Graph> setGraph(Graph graph) {\r
+        return setGraph(graph, "dot");\r
+    }\r
+\r
+    /**\r
+     * Sets a new graph to be drawn. This operation may take a while. It can\r
+     * be called from any thread. Automatically redraws the component.\r
+     * @param graph\r
+     */\r
+    public Computation<Graph> setGraph(Graph graph, String algorithm) {\r
+        Computation<Graph> computation = drawable.setGraph(graph, algorithm);\r
+        computation.addContinuation(new Continuation<Graph>() {\r
+            \r
+            @Override\r
+            public void succeeded(Graph result) {\r
+                if (isDisposed())\r
+                    return;\r
+                \r
+                fit();\r
+            }\r
+            \r
+            @Override\r
+            public void failed(Exception exception) {\r
+            }\r
+        });\r
+        return computation;\r
+    }\r
+\r
+    /**\r
+     * Fits the content of the canvas to the component.\r
+     * Can be called from any thread.\r
+     */\r
+    public void fit() {\r
+        ((ViewerCanvas)canvas).fit();\r
+        getDisplay().asyncExec(new Runnable() {\r
+\r
+            @Override\r
+            public void run() {\r
+                redraw();\r
+            }\r
+\r
+        });\r
+        SwingUtilities.invokeLater(new Runnable() {\r
+\r
+            @Override\r
+            public void run() {\r
+                canvas.repaint();\r
+            }\r
+\r
+        });\r
+\r
+\r
+    }\r
+\r
+    public void requestFocus() {\r
+        if(canvas != null)\r
+            canvas.requestFocus();\r
+    }\r
+    \r
+    public Frame getFrame() {\r
+       return frame;\r
+    }\r
+    \r
+    public Canvas getCanvas() {\r
+       return canvas;\r
+    }\r
+    \r
+    public GraphDrawable2 getDrawable() {\r
+       return drawable;\r
+    }\r
+\r
+}\r