Migrated source code from Simantics SVN

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

diff --git a/bundles/org.simantics.g2d/src/org/simantics/g2d/participant/RulerPainter.java b/bundles/org.simantics.g2d/src/org/simantics/g2d/participant/RulerPainter.java
new file mode 100644 (file)
index 0000000..4e0cc81
--- /dev/null
+++ b/bundles/org.simantics.g2d/src/org/simantics/g2d/participant/RulerPainter.java
@@ -0,0 +1,183 @@
+/*******************************************************************************\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
+/*\r
+ *\r
+ * @author Toni Kalajainen\r
+ */\r
+package org.simantics.g2d.participant;\r
+\r
+import java.awt.AlphaComposite;\r
+import java.awt.Color;\r
+import java.awt.Composite;\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.events.EventHandlerReflection.EventHandler;\r
+import org.simantics.scenegraph.g2d.events.command.CommandEvent;\r
+import org.simantics.scenegraph.g2d.events.command.Commands;\r
+import org.simantics.scenegraph.g2d.nodes.RulerNode;\r
+import org.simantics.utils.datastructures.hints.HintListenerAdapter;\r
+import org.simantics.utils.datastructures.hints.IHintListener;\r
+import org.simantics.utils.datastructures.hints.IHintObservable;\r
+import org.simantics.utils.datastructures.hints.IHintContext.Key;\r
+import org.simantics.utils.datastructures.hints.IHintContext.KeyOf;\r
+import org.simantics.utils.page.MarginUtils;\r
+import org.simantics.utils.page.MarginUtils.Margin;\r
+import org.simantics.utils.page.MarginUtils.Margins;\r
+\r
+\r
+public class RulerPainter extends AbstractCanvasParticipant {\r
+\r
+    public static final int PAINT_PRIORITY = Integer.MAX_VALUE - 1000;\r
+\r
+    public static final double RULER_WIDTH = 20.0;\r
+\r
+    /** Ruler width + 5% */\r
+    public static final Margin RULER_MARGIN5 = MarginUtils.marginOf(5, RulerPainter.RULER_WIDTH, 0);\r
+    /** Ruler width + 2% */\r
+    public static final Margin RULER_MARGIN2 = MarginUtils.marginOf(2, RulerPainter.RULER_WIDTH, 0);\r
+    /** 5% margin + ruler */\r
+    public static final Margins RULER_MARINGS5 = new Margins(RULER_MARGIN5, MarginUtils.MARGIN5, RULER_MARGIN5, MarginUtils.MARGIN5);\r
+    /** 2% margin + ruler */\r
+    public static final Margins RULER_MARINGS2 = new Margins(RULER_MARGIN2, MarginUtils.MARGIN2, RULER_MARGIN2, MarginUtils.MARGIN2);\r
+\r
+    public static final Key KEY_RULER_ENABLED = new KeyOf(Boolean.class, "RULER_ENABLED");\r
+\r
+    /** Background color */\r
+    public static final Key KEY_RULER_BACKGROUND_COLOR = new KeyOf(Color.class, "RULER_BACKGROUND_COLOR");\r
+\r
+    public static final Key KEY_RULER_TEXT_COLOR = new KeyOf(Color.class, "RULER_TEXT_COLOR");\r
+\r
+    public static Color DEFAULT_RULER_BACKGROUND_COLOR = new Color(192, 192, 192, 192);\r
+\r
+    public static Color DEFAULT_RULER_TEXT_COLOR = Color.BLACK;\r
+\r
+    IHintListener hintListener = new HintListenerAdapter() {\r
+        public void hintChanged(IHintObservable sender, Key key, Object oldValue, Object newValue) {\r
+            ICanvasContext cc = getContext();\r
+            if (cc != null) {\r
+                updateNode();\r
+                cc.getContentContext().setDirty();\r
+            }\r
+        }\r
+    };\r
+\r
+    @Override\r
+    public void addedToContext(ICanvasContext ctx) {\r
+        super.addedToContext(ctx);\r
+        getHintStack().addKeyHintListener(getThread(), KEY_RULER_ENABLED, hintListener);\r
+        getHintStack().addKeyHintListener(getThread(), KEY_RULER_BACKGROUND_COLOR, hintListener);\r
+        getHintStack().addKeyHintListener(getThread(), KEY_RULER_TEXT_COLOR, hintListener);\r
+        getHintStack().addKeyHintListener(getThread(), GridPainter.KEY_GRID_SIZE, hintListener);\r
+        getHintStack().addKeyHintListener(getThread(), Hints.KEY_DISABLE_PAINTING, hintListener);\r
+    }\r
+\r
+    @Override\r
+    public void removedFromContext(ICanvasContext ctx) {\r
+        getHintStack().removeKeyHintListener(getThread(), KEY_RULER_ENABLED, hintListener);\r
+        getHintStack().removeKeyHintListener(getThread(), KEY_RULER_BACKGROUND_COLOR, hintListener);\r
+        getHintStack().removeKeyHintListener(getThread(), KEY_RULER_TEXT_COLOR, hintListener);\r
+        getHintStack().removeKeyHintListener(getThread(), GridPainter.KEY_GRID_SIZE, hintListener);\r
+        getHintStack().removeKeyHintListener(getThread(), Hints.KEY_DISABLE_PAINTING, hintListener);\r
+        super.removedFromContext(ctx);\r
+    }\r
+\r
+    @SuppressWarnings("unused")\r
+    private final Composite transparency = AlphaComposite.SrcOver.derive(0.75f);\r
+\r
+    protected RulerNode node = null;\r
+\r
+    @SGInit\r
+    public void initSG(G2DParentNode parent) {\r
+        node = parent.addNode("ruler", RulerNode.class);\r
+        node.setZIndex(PAINT_PRIORITY);\r
+        updateNode();\r
+    }\r
+\r
+    @SGCleanup\r
+    public void cleanupSG() {\r
+        node.remove();\r
+    }\r
+\r
+    void updateNode() {\r
+        node.setEnabled(isPaintingEnabled());\r
+        node.setGridSize(getGridSize());\r
+    }\r
+\r
+    private double getGridSize() {\r
+        Double d = getHint(GridPainter.KEY_GRID_SIZE);\r
+        return d != null ? d : 1.0;\r
+    }\r
+\r
+    boolean isPaintingEnabled()\r
+    {\r
+        boolean enabled = isEnabled();\r
+        Boolean globalDisable = getHint(Hints.KEY_DISABLE_PAINTING);\r
+        return enabled && !Boolean.TRUE.equals(globalDisable);\r
+    }\r
+\r
+    public boolean isEnabled()\r
+    {\r
+        Boolean b = getHint(KEY_RULER_ENABLED);\r
+        return !Boolean.FALSE.equals(b);\r
+    }\r
+\r
+    public Color getRulerTextColor()\r
+    {\r
+        Color c = getHint(KEY_RULER_TEXT_COLOR);\r
+        if (c!=null) return c;\r
+        return DEFAULT_RULER_TEXT_COLOR;\r
+    }\r
+\r
+    public Color getRulerBackgroundColor()\r
+    {\r
+        Color c = getHint(KEY_RULER_BACKGROUND_COLOR);\r
+        if (c!=null) return c;\r
+        return DEFAULT_RULER_BACKGROUND_COLOR;\r
+    }\r
+\r
+    public void setEnabled(boolean enabled)\r
+    {\r
+        node.setEnabled(enabled);\r
+        setHint(KEY_RULER_ENABLED, enabled);\r
+    }\r
+\r
+    public void setRulerTextColor(Color c)\r
+    {\r
+        setHint(KEY_RULER_TEXT_COLOR, c);\r
+    }\r
+\r
+    public void setRulerBackgroundColor(Color c)\r
+    {\r
+        setHint(KEY_RULER_BACKGROUND_COLOR, c);\r
+    }\r
+\r
+    @EventHandler(priority = 0)\r
+    public boolean handleKeyEvent(CommandEvent e) {\r
+        if (e.command.equals( Commands.RULER_ENABLE)) {\r
+            setEnabled(true);\r
+            return true;\r
+        } else if (e.command.equals( Commands.RULER_DISABLE)) {\r
+            setEnabled(false);\r
+            return true;\r
+        } else if (e.command.equals( Commands.RULER_TOGGLE)) {\r
+            setEnabled(!isEnabled());\r
+            return true;\r
+        }\r
+        return false;\r
+    }\r
+\r
+}\r