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List:       kde-bugs-dist
Subject:    [Bug 61933] New: [PATCH] Reduce flicker when selecting largish
From:       Bart Vanhauwaert <bvh-cplusplus () irule ! be>
Date:       2003-07-31 23:47:07
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http://bugs.kde.org/show_bug.cgi?id=61933     
           Summary: [PATCH] Reduce flicker when selecting largish areas
           Product: kiconedit
           Version: unspecified
          Platform: Gentoo Packages
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: wishlist
          Priority: NOR
         Component: general
        AssignedTo: tanghus@kde.org
        ReportedBy: bvh-cplusplus@irule.be


Version:            (using KDE KDE 3.1.2)
Installed from:    Gentoo Packages

This patch reduces flicker and speeds up drawing in case a large area is selected. It \
uses two techniques

1. calls update() instead of repaint() so that Qt can schedule repaints more \
efficiently 2. paints to a pixmap that is bitblitted to the screen instead of drawing \
directly on the widget thereby eliminating flicker.

Please test this patch before committing, the paint code of kiconedit is not trivial \
and I am not 100% sure I got everything correct although it-works-for-me (tm).


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