--- /dev/null
+/*******************************************************************************\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.awt.event.WindowAdapter;\r
+import java.awt.event.WindowEvent;\r
+import java.io.File;\r
+import java.io.IOException;\r
+import java.lang.reflect.InvocationTargetException;\r
+import java.lang.reflect.Method;\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.eclipse.swt.widgets.Control;\r
+import org.eclipse.swt.widgets.Shell;\r
+import org.simantics.graphviz.Graph;\r
+import org.simantics.graphviz.Graphs;\r
+import org.simantics.graphviz.continuation.Computation;\r
+import org.simantics.graphviz.continuation.Continuation;\r
+import org.simantics.graphviz.drawable.GraphDrawable;\r
+import org.simantics.graphviz.drawable.ViewerCanvas;\r
+import org.simantics.utils.ui.SWTUtils;\r
+\r
+public class GraphvizComponent extends Composite {\r
+\r
+ Canvas canvas;\r
+ GraphDrawable drawable;\r
+ Graph graph;\r
+ AtomicBoolean initialized = new AtomicBoolean(false);\r
+\r
+ public GraphvizComponent(Composite parent, int style) {\r
+ super(parent, style | SWT.EMBEDDED | SWT.NO_BACKGROUND);\r
+\r
+ final Frame frame = SWT_AWT.new_Frame(this);\r
+ workaroundJava7FocusProblem(frame);\r
+ \r
+ SwingUtilities.invokeLater(new Runnable() {\r
+\r
+ @Override\r
+ public void run() {\r
+ try {\r
+ drawable = new GraphDrawable();\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
+ private void workaroundJava7FocusProblem(Frame frame) {\r
+ String ver = System.getProperty("java.version");\r
+ if (ver.startsWith("1.7") || ver.startsWith("1.8")) {\r
+ try {\r
+ frame.addWindowListener(new Java7FocusFixListener(this, frame));\r
+ } catch (SecurityException e) {\r
+ e.printStackTrace();\r
+ //Activator.getDefault().getLog().log(new Status(IStatus.ERROR, Activator.PLUGIN_ID, e.getMessage(), e));\r
+ } catch (NoSuchMethodException e) {\r
+ e.printStackTrace();\r
+ //Activator.getDefault().getLog().log(new Status(IStatus.ERROR, Activator.PLUGIN_ID, e.getMessage(), e));\r
+ }\r
+ }\r
+ }\r
+\r
+ static class Java7FocusFixListener extends WindowAdapter {\r
+\r
+ Method shellSetActiveControl;\r
+ Control control;\r
+ Frame frame;\r
+\r
+ public Java7FocusFixListener(Control control, Frame frame) throws NoSuchMethodException, SecurityException {\r
+ this.shellSetActiveControl = Shell.class.getDeclaredMethod("setActiveControl", Control.class);\r
+ this.frame = frame;\r
+ this.control = control;\r
+ }\r
+\r
+ @Override\r
+ public void windowActivated(WindowEvent e) {\r
+ SWTUtils.asyncExec(control, new Runnable() {\r
+ @Override\r
+ public void run() {\r
+ if (control.isDisposed())\r
+ return;\r
+ if (control.getDisplay().getFocusControl() == control) {\r
+ try {\r
+ boolean accessible = shellSetActiveControl.isAccessible();\r
+ if (!accessible)\r
+ shellSetActiveControl.setAccessible(true);\r
+ shellSetActiveControl.invoke(control.getShell(), control);\r
+ if (!accessible)\r
+ shellSetActiveControl.setAccessible(false);\r
+ } catch (SecurityException e) {\r
+ e.printStackTrace();\r
+ //Activator.getDefault().getLog().log(new Status(IStatus.ERROR, Activator.PLUGIN_ID, e.getMessage(), e));\r
+ } catch (IllegalArgumentException e) {\r
+ e.printStackTrace();\r
+ //Activator.getDefault().getLog().log(new Status(IStatus.ERROR, Activator.PLUGIN_ID, e.getMessage(), e));\r
+ } catch (IllegalAccessException e) {\r
+ e.printStackTrace();\r
+ //Activator.getDefault().getLog().log(new Status(IStatus.ERROR, Activator.PLUGIN_ID, e.getMessage(), e));\r
+ } catch (InvocationTargetException e) {\r
+ e.printStackTrace();\r
+ //Activator.getDefault().getLog().log(new Status(IStatus.ERROR, Activator.PLUGIN_ID, e.getMessage(), e));\r
+ }\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 void setGraph(Graph graph) {\r
+ 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
+ waitUntilInitialized();\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
+ });\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
+ if (!isDisposed())\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 void save(File file) throws IOException {\r
+ if (drawable == null) {\r
+ throw new IOException("Nothing to save");\r
+ }\r
+ Graph graph = drawable.getGraph();\r
+ String algo = drawable.getAlgorithm();\r
+ \r
+ String type = getExtension(file);\r
+ if (type == null)\r
+ return;\r
+ Graphs.createImage(graph, algo, type, file);\r
+ }\r
+ \r
+ public String[] getFileExtensions() {\r
+ return new String[]{"*.svg","*.dot","*.eps", "*.jpg", "*.jpeg","*.pdf","*.png","*.ps"};\r
+ }\r
+ \r
+ public String[] getFileNames() {\r
+ return new String[]{"Scalable Vector Graphics Image", "DOT Image", "Encapsulated PostScript Image","JPG Image","JPG Image","Portable Document Format Image","Portable Network Graphics Image","PostScript Image"};\r
+ }\r
+ \r
+ public static String getExtension(File file) {\r
+ String filename = file.getName();\r
+ int index = filename.lastIndexOf(".");\r
+ if (index < 0)\r
+ return null;\r
+ return filename.substring(index+1).toLowerCase();\r
+ }\r
+\r
+}\r
Code Review / simantics / platform.git / blobdiff