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[platform-swt-dev] scrollwheel visual corruption - more info
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Well, heres some more information I dug up on further testing of this
scroll wheel issue.
M3 build on OS X, MS Intellimouse.
1. Scrolling slowly does not corrupt the view.
2. View corruption only occurs with rapid scrollwheel movement, never
with rapidly moving the scroll pane thingambob, whatever its called.
3. On my G4, when I use the scrollwheel, and scroll down (or up) one
increment on the wheel, the content in the window moves upwards approx
3-4 lines, I'd say, and then there is a slight visual repaint of the
newly scrolled-in-view. (I can see the background grey stripes for a
split second before it gets repainted with the proper content).
I've noticed that if the scroll wheel is moved fast enough for it to
move the view up or down faster than one increment before Eclipse can
repaint it, the visual corruption occurs. This is all by eye, and some
testing. I can't really back it up with any hard evidence though.
This is not specific to any view, it occurs in any view where the
scrollwheel support works.
4. Eclipse does retain proper "click" areas and hot spots in it's
internal view although. Like if the visual corruption occurs in the
Java Browser, and you try to click on a expand tree box (box with a
plus in it), and its really just an artifact from the corruption, it
wont actually click or respond. Clicking on an area where the expand
tree box really is, but doesnt appear visually, makes it respond
correctly, and the window repaints and fixes itself.
On Monday, November 18, 2002, at 12:00 PM,
platform-swt-dev-request@xxxxxxxxxxx wrote:
Anyway, its working. :) Very nice. Now for the "but" part. I
noticed that if I scroll rapidly thru something, like the text editor,
or if the Package Explorer perspective is very long, then the view
will
get corrupted, with blocks of stuff appearing where it shouldn't be
appearing. Its hard for me to explain, but basically it's not
refreshing correctly.
I don't think it is mac related. I have the same problem with the GTK
port on Linux :-(
Seb
