--- /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
+/*\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