Migrated source code from Simantics SVN

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

diff --git a/bundles/org.simantics.g2d/src/org/simantics/g2d/participant/PageBorderParticipant.java b/bundles/org.simantics.g2d/src/org/simantics/g2d/participant/PageBorderParticipant.java
new file mode 100644 (file)
index 0000000..a783b54
--- /dev/null
+++ b/bundles/org.simantics.g2d/src/org/simantics/g2d/participant/PageBorderParticipant.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 java.awt.geom.Rectangle2D;\r
+\r
+import org.simantics.g2d.canvas.Hints;\r
+import org.simantics.g2d.canvas.ICanvasContext;\r
+import org.simantics.g2d.canvas.impl.AbstractCanvasParticipant;\r
+import org.simantics.g2d.canvas.impl.SGNodeReflection.SGCleanup;\r
+import org.simantics.g2d.canvas.impl.SGNodeReflection.SGInit;\r
+import org.simantics.scenegraph.g2d.G2DParentNode;\r
+import org.simantics.scenegraph.g2d.nodes.PageBorderNode;\r
+import org.simantics.utils.datastructures.hints.HintListenerAdapter;\r
+import org.simantics.utils.datastructures.hints.IHintContext.Key;\r
+import org.simantics.utils.datastructures.hints.IHintListener;\r
+import org.simantics.utils.datastructures.hints.IHintObservable;\r
+import org.simantics.utils.page.MarginUtils.Margins;\r
+import org.simantics.utils.page.PageDesc;\r
+\r
+/**\r
+ * Paints borders or a page according to Page\r
+ *\r
+ * @author Tuukka Lehtonen\r
+ */\r
+public class PageBorderParticipant extends AbstractCanvasParticipant {\r
+\r
+    IHintListener hintListener = new HintListenerAdapter() {\r
+        @Override\r
+        public void hintChanged(IHintObservable sender, Key key, Object oldValue, Object newValue) {\r
+            if (key == Hints.KEY_PAGE_DESC) {\r
+                //System.out.println("PAGE DESC CHANGED FROM " + oldValue + " to " + newValue);\r
+                updateNode(true);\r
+            } else if (key == Hints.KEY_DISPLAY_PAGE) {\r
+                //System.out.println("DISPLAY PAGE CHANGED: " + oldValue + " TO " + newValue);\r
+                updateNode(true);\r
+            } else if (key == Hints.KEY_DISPLAY_MARGINS) {\r
+                //System.out.println("DISPLAY MARGINS CHANGED: " + oldValue + " TO " + newValue);\r
+                updateNode(true);\r
+            } else if (key == Hints.KEY_DISABLE_PAINTING) {\r
+                updateNode(true);\r
+            }\r
+        }\r
+    };\r
+\r
+    @Override\r
+    public void addedToContext(ICanvasContext ctx) {\r
+        super.addedToContext(ctx);\r
+        getHintStack().addKeyHintListener(getThread(), Hints.KEY_PAGE_DESC, hintListener);\r
+        getHintStack().addKeyHintListener(getThread(), Hints.KEY_DISPLAY_PAGE, hintListener);\r
+        getHintStack().addKeyHintListener(getThread(), Hints.KEY_DISPLAY_MARGINS, hintListener);\r
+        getHintStack().addKeyHintListener(getThread(), Hints.KEY_DISABLE_PAINTING, hintListener);\r
+    }\r
+\r
+    @Override\r
+    public void removedFromContext(ICanvasContext ctx) {\r
+        getHintStack().removeKeyHintListener(getThread(), Hints.KEY_PAGE_DESC, hintListener);\r
+        getHintStack().removeKeyHintListener(getThread(), Hints.KEY_DISPLAY_PAGE, hintListener);\r
+        getHintStack().removeKeyHintListener(getThread(), Hints.KEY_DISPLAY_MARGINS, hintListener);\r
+        getHintStack().removeKeyHintListener(getThread(), Hints.KEY_DISABLE_PAINTING, hintListener);\r
+        super.removedFromContext(ctx);\r
+    }\r
+\r
+    protected void updateNode(boolean markDirty) {\r
+        boolean displayPage = !Boolean.FALSE.equals(getHint(Hints.KEY_DISPLAY_PAGE));\r
+        boolean displayMargins = !Boolean.FALSE.equals(getHint(Hints.KEY_DISPLAY_MARGINS));\r
+        boolean enabled = !Boolean.TRUE.equals(getHint(Hints.KEY_DISABLE_PAINTING));\r
+\r
+        Rectangle2D border = new Rectangle2D.Double();\r
+        Rectangle2D margin = new Rectangle2D.Double();\r
+\r
+        PageDesc desc = getHint(Hints.KEY_PAGE_DESC);\r
+        //System.out.println("updateNode: " + desc + ", " + displayPage + ", " + displayMargins);\r
+        if (desc != null) {\r
+            if (displayPage)\r
+                desc.getPageRectangle(border);\r
+\r
+            Margins margins = desc.getMargins();\r
+            boolean marginsZero = margins.isZero();\r
+            //System.out.println("Margins: " + margins + ": zero: " + marginsZero);\r
+            if (displayMargins && !marginsZero) {\r
+                double mlx = desc.getLeftEdgePos() + margins.left.diagramAbsolute;\r
+                double mty = desc.getTopEdgePos() + margins.top.diagramAbsolute;\r
+                double w = desc.getOrientedWidth() - (margins.left.diagramAbsolute + margins.right.diagramAbsolute);\r
+                double h = desc.getOrientedHeight() - (margins.top.diagramAbsolute + margins.bottom.diagramAbsolute);\r
+                margin.setFrame(mlx, mty, w, h);\r
+            }\r
+        }\r
+\r
+        node.init(border, margin, enabled);\r
+\r
+        if (markDirty)\r
+            setDirty();\r
+    }\r
+\r
+    protected PageBorderNode node = null;\r
+\r
+    @SGInit\r
+    public void initSG(G2DParentNode parent) {\r
+        node = parent.addNode("page border", PageBorderNode.class);\r
+        node.setZIndex(-1000);\r
+        updateNode(false);\r
+    }\r
+\r
+    @SGCleanup\r
+    public void cleanupSG() {\r
+        node.remove();\r
+    }\r
+}\r