Hi Luca,
your sample application helped me very well. Now the zoom is working, i
implemented it on a Buttonclick instead of the mouse-click
if(cmd.equals("Zoom")){
AffineTransform at;
at = canvas.getRenderingTransform();
if(p2d1 != null && p2d2 != null){
at.preConcatenate(AffineTransform.getTranslateInstance(-p2d1.getX(),
-p2d1.getY()));
at.preConcatenate(AffineTransform.getScaleInstance(1.25, 1.25));
at.preConcatenate(AffineTransform.getTranslateInstance(p2d1.getX(),
p2d1.getY()));
canvas.setRenderingTransform(at);
System.out.println("Zoom-in");
}
}
As you can see, i am working with p2d1 and p2d2, these are of the Type
Point2D --> coordinates from the Rectangle that the user can drag to
choose where to zoom in.
But i don't really know how to make it zoom into the choosen Area, and
only this area. So it should be zoomed in that exactly this Area can be
shown. (The Area the user dragged with his mouse).
I have to say, that my Points (p2d1 and p2d2) i transformed like this:
at = canvas.getViewBoxTransform();
p2d1 = at.transform(new Point2D.Float(pressedX,
pressedY), null);
p2d2 = at.transform(new Point2D.Float(releasedX,
releasedY), null);
As you can see, i have done the ViewBoxTransform at first, to get
exactly the Coordinate 0,0 on the top left corner of the SVG-Image.
So, would it be possible to zoom into the choosen Area? I really don't
know how to do that
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