Merge pull request #567 from ejoerns/pull-req/vis-scroll
[Cooja] Mouse wheel zooming for Visualizer
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commit
140b55d8f7
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@ -56,6 +56,8 @@ import java.awt.event.KeyEvent;
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import java.awt.event.MouseAdapter;
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import java.awt.event.MouseEvent;
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import java.awt.event.MouseMotionListener;
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import java.awt.event.MouseWheelEvent;
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import java.awt.event.MouseWheelListener;
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import java.awt.geom.AffineTransform;
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import java.io.File;
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import java.io.IOException;
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@ -412,6 +414,20 @@ public class Visualizer extends VisPlugin implements HasQuickHelp {
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repaint();
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}
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});
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canvas.addMouseWheelListener(new MouseWheelListener() {
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public void mouseWheelMoved(MouseWheelEvent mwe) {
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int x = mwe.getX();
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int y = mwe.getY();
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int rot = mwe.getWheelRotation();
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if (rot > 0) {
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zoomToFactor(zoomFactor() / 1.2, new Point(x, y));
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} else {
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zoomToFactor(zoomFactor() * 1.2, new Point(x, y));
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}
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}
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});
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/* Register mote menu actions */
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registerMoteMenuAction(MoveMoteMenuAction.class);
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@ -855,16 +871,16 @@ public class Visualizer extends VisPlugin implements HasQuickHelp {
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}
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private void zoomToFactor(double newZoom) {
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Position center = transformPixelToPosition(
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new Point(canvas.getWidth()/2, canvas.getHeight()/2)
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);
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zoomToFactor(newZoom, new Point(canvas.getWidth()/2, canvas.getHeight()/2));
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}
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private void zoomToFactor(double newZoom, Point zoomCenter) {
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Position center = transformPixelToPosition(zoomCenter);
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viewportTransform.setToScale(
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newZoom,
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newZoom
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);
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Position newCenter = transformPixelToPosition(
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new Point(canvas.getWidth()/2, canvas.getHeight()/2)
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);
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Position newCenter = transformPixelToPosition(zoomCenter);
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viewportTransform.translate(
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newCenter.getXCoordinate() - center.getXCoordinate(),
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newCenter.getYCoordinate() - center.getYCoordinate()
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