]> gerrit.simantics Code Review - simantics/platform.git/blobdiff - bundles/org.simantics.diagram/src/org/simantics/diagram/symbollibrary/IconRenderingUtil.java
Fixed multiple issues causing dangling references to discarded queries
[simantics/platform.git] / bundles / org.simantics.diagram / src / org / simantics / diagram / symbollibrary / IconRenderingUtil.java
index c56a2a6d93bf23ad9fee6c40e0cf57fc475a45de..6f89e5a48b51af80dbd8c51837c00b200935fc74 100644 (file)
@@ -1,93 +1,93 @@
-/*******************************************************************************\r
- * Copyright (c) 2007, 2011 Association for Decentralized Information Management in\r
- * 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.diagram.symbollibrary;\r
-\r
-import java.awt.Color;\r
-import java.awt.Graphics2D;\r
-import java.awt.Point;\r
-import java.awt.RenderingHints;\r
-import java.awt.geom.AffineTransform;\r
-import java.awt.geom.Rectangle2D;\r
-import java.awt.image.BufferedImage;\r
-\r
-import org.eclipse.swt.graphics.ImageData;\r
-import org.simantics.db.ReadGraph;\r
-import org.simantics.db.Resource;\r
-import org.simantics.db.exception.DatabaseException;\r
-import org.simantics.diagram.query.DiagramRequests;\r
-import org.simantics.diagram.stubs.DiagramResource;\r
-import org.simantics.diagram.stubs.G2DResource;\r
-import org.simantics.g2d.diagram.DiagramClass;\r
-import org.simantics.g2d.diagram.DiagramHints;\r
-import org.simantics.g2d.diagram.IDiagram;\r
-import org.simantics.g2d.diagram.impl.Diagram;\r
-import org.simantics.g2d.element.ElementClass;\r
-import org.simantics.g2d.element.handler.StaticSymbol;\r
-import org.simantics.g2d.image.DefaultImages;\r
-import org.simantics.g2d.image.Image;\r
-import org.simantics.scenegraph.g2d.G2DSceneGraph;\r
-import org.simantics.structural.stubs.StructuralResource2;\r
-import org.simantics.utils.ui.gfx.ImageUtils;\r
-\r
-/**\r
- * @author Hannu Niemistö\r
- */\r
-public class IconRenderingUtil {\r
-\r
-    public static BufferedImage renderBufferedImage(ReadGraph graph, Resource symbolResource, int size) throws DatabaseException {\r
-        // Ensure these resources are available as services.\r
-        G2DResource.getInstance(graph);\r
-        StructuralResource2.getInstance(graph);\r
-        DiagramResource.getInstance(graph);\r
-\r
-        IDiagram diagram = Diagram.spawnNew(DiagramClass.DEFAULT);\r
-\r
-        diagram.setHint(DiagramHints.KEY_ELEMENT_RASTER_TARGET_SIZE, new Point(size,size));\r
-        ElementClass ec = \r
-                graph.syncRequest( DiagramRequests.getElementClass(symbolResource, diagram) );\r
-        StaticSymbol ss = ec.getSingleItem(StaticSymbol.class);\r
-        Image source = ss == null ? DefaultImages.UNKNOWN2.get() : ss.getImage();\r
-        G2DSceneGraph sceneGraph = new G2DSceneGraph();\r
-        source.init(sceneGraph);\r
-\r
-        BufferedImage targetImage = new BufferedImage(size, size, \r
-                java.awt.image.BufferedImage.TYPE_INT_ARGB);\r
-        Graphics2D g2d = (Graphics2D)targetImage.getGraphics();\r
-        g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);\r
-        g2d.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS, RenderingHints.VALUE_FRACTIONALMETRICS_ON);\r
-        g2d.setBackground(Color.WHITE);\r
-        g2d.clearRect(0, 0, size, size);\r
-        Rectangle2D bounds = source.getBounds();\r
-        double maxB = Math.max(bounds.getWidth(), bounds.getHeight());\r
-        double scale = size/maxB;\r
-        g2d.setTransform(new AffineTransform(\r
-                scale, 0.0, 0.0, scale, -bounds.getMinX()*scale, -bounds.getMinY()*scale\r
-                ));\r
-        sceneGraph.render(g2d);\r
-\r
-        return targetImage;\r
-    }\r
-\r
-    public static ImageData renderIcon(ReadGraph graph, Resource symbolResource, int size) throws DatabaseException {\r
-        try {\r
-            BufferedImage img = renderBufferedImage(graph, symbolResource, size);\r
-            if (img == null)\r
-                return null;\r
-            return ImageUtils.convertToSWT(img);\r
-        } catch (Exception e) {\r
-            // FIXME: this is here because rendering a symbol may crash in\r
-            // totally unexpected ways if the symbol contains unrenderable content.\r
-            return null;\r
-        }\r
-    }\r
-\r
-}\r
+/*******************************************************************************
+ * Copyright (c) 2007, 2011 Association for Decentralized Information Management in
+ * Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.diagram.symbollibrary;
+
+import java.awt.Color;
+import java.awt.Graphics2D;
+import java.awt.Point;
+import java.awt.RenderingHints;
+import java.awt.geom.AffineTransform;
+import java.awt.geom.Rectangle2D;
+import java.awt.image.BufferedImage;
+
+import org.eclipse.swt.graphics.ImageData;
+import org.simantics.db.ReadGraph;
+import org.simantics.db.Resource;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.diagram.query.DiagramRequests;
+import org.simantics.diagram.stubs.DiagramResource;
+import org.simantics.diagram.stubs.G2DResource;
+import org.simantics.g2d.diagram.DiagramClass;
+import org.simantics.g2d.diagram.DiagramHints;
+import org.simantics.g2d.diagram.IDiagram;
+import org.simantics.g2d.diagram.impl.Diagram;
+import org.simantics.g2d.element.ElementClass;
+import org.simantics.g2d.element.handler.StaticSymbol;
+import org.simantics.g2d.image.DefaultImages;
+import org.simantics.g2d.image.Image;
+import org.simantics.scenegraph.g2d.G2DSceneGraph;
+import org.simantics.structural.stubs.StructuralResource2;
+import org.simantics.utils.ui.gfx.ImageUtils;
+
+/**
+ * @author Hannu Niemistö
+ */
+public class IconRenderingUtil {
+
+    public static BufferedImage renderBufferedImage(ReadGraph graph, Resource symbolResource, int size) throws DatabaseException {
+        // Ensure these resources are available as services.
+        G2DResource.getInstance(graph);
+        StructuralResource2.getInstance(graph);
+        DiagramResource.getInstance(graph);
+
+        IDiagram diagram = Diagram.spawnNew(DiagramClass.DEFAULT);
+
+        diagram.setHint(DiagramHints.KEY_ELEMENT_RASTER_TARGET_SIZE, new Point(size,size));
+        ElementClass ec = 
+                graph.syncRequest( DiagramRequests.getElementClass(symbolResource, diagram) );
+        StaticSymbol ss = ec.getSingleItem(StaticSymbol.class);
+        Image source = ss == null ? DefaultImages.UNKNOWN2.get() : ss.getImage();
+        G2DSceneGraph sceneGraph = new G2DSceneGraph();
+        source.init(sceneGraph);
+
+        BufferedImage targetImage = new BufferedImage(size, size, 
+                java.awt.image.BufferedImage.TYPE_INT_ARGB);
+        Graphics2D g2d = (Graphics2D)targetImage.getGraphics();
+        g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
+        g2d.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS, RenderingHints.VALUE_FRACTIONALMETRICS_ON);
+        g2d.setBackground(Color.WHITE);
+        g2d.clearRect(0, 0, size, size);
+        Rectangle2D bounds = source.getBounds();
+        double maxB = Math.max(bounds.getWidth(), bounds.getHeight());
+        double scale = size/maxB;
+        g2d.setTransform(new AffineTransform(
+                scale, 0.0, 0.0, scale, -bounds.getMinX()*scale, -bounds.getMinY()*scale
+                ));
+        sceneGraph.render(g2d);
+
+        return targetImage;
+    }
+
+    public static ImageData renderIcon(ReadGraph graph, Resource symbolResource, int size) throws DatabaseException {
+        try {
+            BufferedImage img = renderBufferedImage(graph, symbolResource, size);
+            if (img == null)
+                return null;
+            return ImageUtils.convertToSWT(img);
+        } catch (Exception e) {
+            // FIXME: this is here because rendering a symbol may crash in
+            // totally unexpected ways if the symbol contains unrenderable content.
+            return null;
+        }
+    }
+
+}