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Beginning improved scaling feature

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knut 2007-04-23 18:04:00 +00:00
parent 5c9d049819
commit 4cbd0e5316
1 changed files with 33 additions and 17 deletions
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50
src/album/editor/Editor.java
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@ -19,7 +19,7 @@ import javax.swing.border.*;
*/
public class Editor
extends JComponent
implements MouseListener, MouseMotionListener
implements MouseListener, MouseMotionListener, MouseWheelListener
{
// Given from input image
BufferedImage img;
@ -49,7 +49,7 @@ public class Editor
roi.left = -0.4f;
roi.right = 0.4f;
rescale(imgScale * 680);
rescale(imgScale * 680, null);
/*
Dimension size = new Dimension(680, 680);
setPreferredSize(size);
@ -69,12 +69,19 @@ public class Editor
*/
addMouseListener(this);
addMouseMotionListener(this);
addMouseWheelListener(this);
}
void rescale(double newScale) {
void rescale(double newScale, Point center) {
// TODO Get the visible rect
// TODO find "center" in visible rect. If null or not there make it the actual center
// TODO Make up a virtual visible rect by scaling actual visible rect
// TODO calculate top left coordinate in new virtual visible rect
// TODO translate visible rect to same top left as virtual
// TODO scroll to visible rect
scale = newScale;
side = (int)Math.round(scale / imgScale);
Dimension size = new Dimension(side, side);
@ -94,22 +101,17 @@ public class Editor
super.paintComponent(g1);
if (dirty) {
// System.out.println("Recalculating");
AffineTransform screenToCoord = new AffineTransform();
screenToCoord.translate(side/2d, side/2d);
screenToCoord.scale(side, -side);
AffineTransform coordToScreen = new AffineTransform();
coordToScreen.scale(1d/side, -1d/side);
coordToScreen.translate(-side/2d, -side/2d);
this.screenToCoord = coordToScreen;
this.coordToScreen = screenToCoord;
coordToScreen.translate(side/2d, side/2d);
coordToScreen.scale(side, -side);
AffineTransform screenToCoord = new AffineTransform();
screenToCoord.scale(1d/side, -1d/side);
screenToCoord.translate(-side/2d, -side/2d);
this.screenToCoord = screenToCoord;
this.coordToScreen = coordToScreen;
dirty = false;
} else {
// System.out.println("using cached transform");
}
Graphics2D g = (Graphics2D)g1;
@ -191,7 +193,7 @@ public class Editor
int value = zoomSlider.getValue();
if (value != previousValue) {
previousValue = value;
rescale(value * 0.01);
rescale(value * 0.01, null);
}
}
});
@ -228,7 +230,9 @@ public class Editor
Container c = frame.getContentPane();
c.setLayout(new BorderLayout());
c.add(x.createControlPanel(), BorderLayout.EAST);
c.add(new JScrollPane(x), BorderLayout.CENTER);
JScrollPane scroller = new JScrollPane(x);
scroller.setWheelScrollingEnabled(false);
c.add(scroller, BorderLayout.CENTER);
frame.pack();
frame.setVisible(true);
@ -386,6 +390,17 @@ public class Editor
setCursor(cursors[findRegion(e.getX(), e.getY())]);
}
public void mouseWheelMoved(MouseWheelEvent e) {
int units = e.getUnitsToScroll();
System.out.println(units);
rescale(scale * (1f + units / 100f), e.getPoint());
// this.
}
static void log(String x) {
System.out.println(x);
}
@ -453,6 +468,7 @@ public class Editor
return cache;
}
}
}
// eof