This fixes two issues in JViewport:
- in scrollRectToVisible() we were calculating with the viewport
coordinates, but we should be calculating with the view coordinates to
get the correct results. This caused wrong scrolling offset.
- in paintBackbuffer() we must update the buffer when we are not
In order to fix bug#28929 I switched back the JViewport to use
backingstore scrollmode. This has similar performance characteristics
like the blitting scrollmode, but is much more reliable in my
experience. I think I implemented the blitting scrollmode wrong anyway
and need to reimplement this.
Together with the last RepaintManager fix, we are now finally able to do
the BLIT scroll mode in JViewport, which is more efficient and less
memory hungry than the BACKINGSTORE scroll mode. I also had to do some
clipping to avoid painting problems.
This time I think I have thoroughly tested the
Hi,
On Mon, 2006-02-27 at 14:05 +0100, Roman Kennke wrote:
2006-02-27 Roman Kennke [EMAIL PROTECTED]
* javax/swing/JViewport.java
(static_init): Changed default scrollmode to BLIT.
(paintSimple): Added some clipping to avoid painting problems.
(paintBlit):
