Migrated source code from Simantics SVN

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

diff --git a/bundles/org.simantics.g2d/src/org/simantics/g2d/participant/PointerPainter.java b/bundles/org.simantics.g2d/src/org/simantics/g2d/participant/PointerPainter.java
new file mode 100644 (file)
index 0000000..cf5ea86
--- /dev/null
+++ b/bundles/org.simantics.g2d/src/org/simantics/g2d/participant/PointerPainter.java
@@ -0,0 +1,131 @@
+/*******************************************************************************\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.BasicStroke;\r
+import java.awt.Color;\r
+import java.awt.Paint;\r
+import java.awt.Shape;\r
+import java.awt.Stroke;\r
+import java.awt.geom.AffineTransform;\r
+import java.awt.geom.Path2D;\r
+import java.util.Map;\r
+\r
+import org.simantics.g2d.canvas.SGDesignation;\r
+import org.simantics.g2d.canvas.impl.AbstractCanvasParticipant;\r
+import org.simantics.g2d.canvas.impl.DependencyReflection.Dependency;\r
+import org.simantics.g2d.canvas.impl.SGNodeReflection.SGCleanup;\r
+import org.simantics.g2d.canvas.impl.SGNodeReflection.SGInit;\r
+import org.simantics.g2d.participant.MouseUtil.MouseInfo;\r
+import org.simantics.scenegraph.g2d.G2DParentNode;\r
+import org.simantics.scenegraph.g2d.events.MouseEvent;\r
+import org.simantics.scenegraph.g2d.events.EventHandlerReflection.EventHandler;\r
+import org.simantics.scenegraph.g2d.events.MouseEvent.MouseButtonPressedEvent;\r
+import org.simantics.scenegraph.g2d.events.MouseEvent.MouseButtonReleasedEvent;\r
+import org.simantics.scenegraph.g2d.events.MouseEvent.MouseMovedEvent;\r
+import org.simantics.scenegraph.g2d.nodes.InstancingShapeNode;\r
+import org.simantics.utils.datastructures.hints.IHintContext.Key;\r
+import org.simantics.utils.datastructures.hints.IHintContext.KeyOf;\r
+\r
+/**\r
+ * Paints mouse cursors in a multi-mouse setup.\r
+ * \r
+ * @author Toni Kalajainen\r
+ * @author Tuukka Lehtonen\r
+ */\r
+public class PointerPainter extends AbstractCanvasParticipant {\r
+\r
+    /**\r
+     * Key for the hint that determines whether cursors are painter or not.\r
+     */\r
+    public static final Key     KEY_PAINT_POINTER     = new KeyOf(Boolean.class);\r
+\r
+    public static final int     CURSOR_PAINT_Z_ORDER = 5000;\r
+\r
+    private final static Stroke CURSOR_STROKE         = new BasicStroke(1.0f);\r
+\r
+    @Dependency MouseUtil       monitor;\r
+\r
+    InstancingShapeNode         node;\r
+\r
+    Shape                       pointer;\r
+\r
+    public PointerPainter() {\r
+        Path2D p = new Path2D.Double();\r
+        p.moveTo(-10, -10);\r
+        p.lineTo(10, 10);\r
+        p.moveTo(10, -10);\r
+        p.lineTo(-10, 10);\r
+\r
+        this.pointer = p;\r
+    }\r
+\r
+    @SGInit(designation = SGDesignation.CONTROL)\r
+    public void init(G2DParentNode parent) {\r
+        node = parent.addNode("pointers", InstancingShapeNode.class);\r
+        node.setZIndex(CURSOR_PAINT_Z_ORDER);\r
+        node.setShape(pointer);\r
+        node.setStroke(CURSOR_STROKE);\r
+        node.setFill(false);\r
+        node.setScaleStroke(false);\r
+        node.setScaleShape(false);\r
+    }\r
+\r
+    @SGCleanup\r
+    public void cleanup() {\r
+        node.remove();\r
+        node = null;\r
+    }\r
+\r
+    public boolean isCursorEnabled() {\r
+        Boolean pp = getHint(KEY_PAINT_POINTER);\r
+        return Boolean.TRUE.equals(pp);\r
+    }\r
+\r
+    @EventHandler(priority = Integer.MAX_VALUE)\r
+    public boolean handleMouseEvent(MouseEvent e) {\r
+        if (!isCursorEnabled())\r
+            return false;\r
+\r
+        assertDependencies();\r
+\r
+        if (e instanceof MouseMovedEvent || e instanceof MouseButtonPressedEvent\r
+                || e instanceof MouseButtonReleasedEvent) {\r
+            updateNode();\r
+            setDirty();\r
+        }\r
+        return false;\r
+    }\r
+\r
+    private void updateNode() {\r
+        Map<Integer, MouseInfo> miceInfo = monitor.getMiceInfo();\r
+\r
+        AffineTransform[] transforms = new AffineTransform[miceInfo.size()];\r
+        Paint[] paints = new Paint[miceInfo.size()];\r
+\r
+        int i = 0;\r
+        for (MouseInfo mi : miceInfo.values()) {\r
+            int color = 0;\r
+            if ((mi.buttons & 1) > 0) color |= 0xff;\r
+            if ((mi.buttons & 2) > 0) color |= 0xff00;\r
+            if ((mi.buttons & 4) > 0) color |= 0xff0000;\r
+\r
+            transforms[i] = AffineTransform.getTranslateInstance(mi.controlPosition.getX(), mi.controlPosition.getY());\r
+            paints[i] = new Color(color);\r
+\r
+            ++i;\r
+        }\r
+\r
+        node.setInstances(transforms, paints);\r
+    }\r
+\r
+}\r