Re: gEDA-user: Bug: Screenupdate on moving selected objects

[Felix Ruoff <Felix@xxxxxxxxxxxxxxxxxx>]

   Thank you, it's fixed at my system, now!
   Am 02.05.2011 00:54, schrieb Peter Clifton:

On Sun, 2011-05-01 at 22:16 +0100, Peter Clifton wrote:

On Sun, 2011-05-01 at 22:55 +0200, Felix Ruoff wrote:

Hello!
   Since commit e323e4636ef7b7239003a41ba305221bc6d9bab1 'hid/gtk:
   Invalidate the damaged region, not the whole view' there is an error on
   moving selected objects. If you select an element (footprint, line,
   ...) and move it with a second klick+drag, just a small part of the
   view is rendered during moving/dragging. The remain of the screen is
   rendered white.

Yep, I can reproduce it here.. I realised it was broken last night but
haven't had a chance to fix the issue yet.

...


Chances are that the underlying problem was existing, but our rather
conservative policy of redrawing the whole screen every frame may have
masked it.


Should be fixed in git HEAD now. There were two bugs (I counted so far),
both were my doing, and specific to the GTK/GDK rendering. One was
failing to clear the clip-region of a graphics context we then went on
to use in the expose handler (the cause of the non-painting you saw
where the majority of the screen was rendered in the default widget
colour).

The second was more subtle, and I'd swapped the X and Y coordinate
conversion macros (not their inputs) when calculating the region to
update on screen - so it was wrong for any case where the board was
flipped, or panned away from the (0,0) origin unequally in the X and Y
directions.






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