X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;ds=inline;f=bundles%2Forg.simantics.scenegraph%2Fsrc%2Forg%2Fsimantics%2Fscenegraph%2Fg2d%2Fnodes%2FBoxSelectionNode.java;fp=bundles%2Forg.simantics.scenegraph%2Fsrc%2Forg%2Fsimantics%2Fscenegraph%2Fg2d%2Fnodes%2FBoxSelectionNode.java;h=3bd19430541a91f7661df4e67c71da035e0e1739;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/g2d/nodes/BoxSelectionNode.java b/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/g2d/nodes/BoxSelectionNode.java
new file mode 100644
index 000000000..3bd194305
--- /dev/null
+++ b/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/g2d/nodes/BoxSelectionNode.java
@@ -0,0 +1,159 @@
+/*******************************************************************************
+ * Copyright (c) 2007, 2010 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.scenegraph.g2d.nodes;
+
+import java.awt.BasicStroke;
+import java.awt.Color;
+import java.awt.Graphics2D;
+import java.awt.Stroke;
+import java.awt.geom.Point2D;
+import java.awt.geom.Rectangle2D;
+
+import org.simantics.scenegraph.g2d.G2DNode;
+import org.simantics.scenegraph.g2d.events.EventTypes;
+import org.simantics.scenegraph.g2d.events.MouseEvent.MouseButtonReleasedEvent;
+import org.simantics.scenegraph.g2d.events.MouseEvent.MouseMovedEvent;
+import org.simantics.scenegraph.utils.GeometryUtils;
+import org.simantics.scenegraph.utils.NodeUtil;
+
+/**
+ * @author Tuukka Lehtonen
+ */
+public class BoxSelectionNode extends G2DNode {
+
+    private static final long serialVersionUID = 8508750881358776559L;
+
+    protected Stroke            stroke           = new BasicStroke(2);
+    protected Color             color            = Color.BLACK;
+    protected boolean           scaleStroke      = false;
+    protected int               mouseButton      = 0;
+
+    protected Point2D           start            = new Point2D.Double(0, 0);
+    protected Point2D           end              = new Point2D.Double(0, 0);
+
+    protected SelectionListener listener         = null;
+
+    public static interface SelectionListener {
+        public void onSelect(Rectangle2D rect, int modifiers);
+    }
+
+    @Override
+    public void init() {
+        super.init();
+        addEventHandler(this);
+    }
+
+    @Override
+    public void cleanup() {
+        removeEventHandler(this);
+        super.cleanup();
+    }
+
+    @SyncField("stroke")
+    public void setStroke(Stroke stroke) {
+        this.stroke = stroke;
+    }
+
+    @SyncField("color")
+    public void setColor(Color color) {
+        this.color = color;
+    }
+
+    @SyncField("scaleStroke")
+    public void setScaleStroke(boolean scaleStroke) {
+        this.scaleStroke = scaleStroke;
+    }
+
+    @SyncField("start")
+    public void setStart(Point2D start) {
+        this.start = start;
+    }
+
+    @SyncField("end")
+    public void setEnd(Point2D end) {
+        this.end = end;
+    }
+
+    @SyncField("mouseButton")
+    public void setMouseButton(int mouseButton) {
+        this.mouseButton = mouseButton;
+    }
+
+    @Override
+    public void render(Graphics2D g2d) {
+        Rectangle2D bounds = getBoundsInLocal();
+        if (bounds == null || bounds.isEmpty())
+            return;
+
+        if (color != null)
+            g2d.setColor(color);
+        if (stroke != null) {
+            if (scaleStroke && stroke instanceof BasicStroke) {
+                BasicStroke bs = GeometryUtils.scaleStroke(stroke, (float) (1.0 / GeometryUtils.getScale(g2d.getTransform())));
+                g2d.setStroke(bs);
+            } else {
+                g2d.setStroke(stroke);
+            }
+        }
+
+        g2d.draw(bounds);
+    }
+
+    public void setSelectionListener(SelectionListener listener) {
+        this.listener = listener;
+    }
+
+    @ServerSide
+    private void onSelect(Rectangle2D selection, int modifiers) {
+        if (listener != null)
+            listener.onSelect(selection, modifiers);
+    }
+
+    @Override
+    public Rectangle2D getBoundsInLocal() {
+        // Empty bounds indicate no rendering.
+        if (start == null || end == null)
+            return new Rectangle2D.Double();
+
+        Rectangle2D rect = new Rectangle2D.Double(Math.min(start.getX(), end.getX()),
+                Math.min(start.getY(), end.getY()),
+                Math.max(start.getX(), end.getX())-Math.min(start.getX(), end.getX()),
+                Math.max(start.getY(), end.getY())-Math.min(start.getY(), end.getY()));
+        return rect;
+    }
+
+    @Override
+    public int getEventMask() {
+        return EventTypes.MouseButtonReleasedMask | EventTypes.MouseDragBeginMask
+                | EventTypes.MouseMovedMask;
+    }
+
+    @Override
+    protected boolean mouseButtonReleased(MouseButtonReleasedEvent e) {
+        if (e.button == mouseButton) {
+            onSelect(getBoundsInLocal(), e.stateMask);
+            start = null;
+            end = null;
+        }
+        return false;
+    }
+
+    @Override
+    protected boolean mouseMoved(MouseMovedEvent e) {
+        if (end != null) {
+            NodeUtil.worldToLocal(this, e.controlPosition, end);
+            repaint();
+        }
+        return false;
+    }
+
+}