[Mono-bugs] [Bug 402613] Region.IsVisible() sometimes gives incorrect result

[bugzilla_noreply at novell.com]

https://bugzilla.novell.com/show_bug.cgi?id=402613

User spouliot at novell.com added comment
https://bugzilla.novell.com/show_bug.cgi?id=402613#c1


Sebastien Pouliot <spouliot at novell.com> changed:

           What    |Removed                                         |Added
----------------------------------------------------------------------------
         AssignedTo|mono-bugs at lists.ximian.com                      |spouliot at novell.com
             Status|NEW                                             |ASSIGNED
          Component|Sys.Drawing.                                    |libgdiplus




--- Comment #1 from Sebastien Pouliot <spouliot at novell.com>  2008-06-24 06:25:29 MDT ---
You're right, the computed rectangles shows that the rectangle makes a kind of
a line (from the start).

(gdb) print region->rects[0]
$4 = {X = -4194304, Y = -4194304, Width = 8388608, Height = 4194370}
(gdb) print region->rects[1]
$5 = {X = -4194304, Y = 66, Width = 4194691, Height = 133}
(gdb) print region->rects[2]
$6 = {X = 576, Y = 66, Width = 4193728, Height = 133}
(gdb) print region->rects[3]
$7 = {X = -4194304, Y = 199, Width = 8388608, Height = 93}
(gdb) print region->rects[4]
$8 = {X = 576, Y = 292, Width = 4193728, Height = 133}
(gdb) print region->rects[5]
$9 = {X = -4194304, Y = 425, Width = 8388608, Height = 4193879}

So the problem is likely inside gdip_combine_exclude (not in
GdipIsVisibleRegionRect) inside libgdiplus.


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