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check whether clipping region is empty, not whether it's null; disable USE_PAINT_REGION which seems to be more harmful than useful (part of patch 1716763)

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@48716 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin 2007-09-15 23:52:02 +00:00
parent ca86035f16
commit 6dd25d20be
1 changed files with 8 additions and 7 deletions
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15
src/x11/dcclient.cpp
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@ -41,7 +41,8 @@
// local defines
//-----------------------------------------------------------------------------
#define USE_PAINT_REGION 1
// VZ: what is this for exactly??
#define USE_PAINT_REGION 0
//-----------------------------------------------------------------------------
// local data
@ -2171,13 +2172,13 @@ void wxWindowDC::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, wxCoo
rect.width = XLOG2DEVREL(width);
rect.height = YLOG2DEVREL(height);
if (!m_currentClippingRegion.IsNull())
if (!m_currentClippingRegion.IsEmpty())
m_currentClippingRegion.Intersect( rect );
else
m_currentClippingRegion.Union( rect );
m_currentClippingRegion = rect;
#if USE_PAINT_REGION
if (!m_paintClippingRegion.IsNull())
if (!m_paintClippingRegion.IsEmpty())
m_currentClippingRegion.Intersect( m_paintClippingRegion );
#endif
@ -2203,13 +2204,13 @@ void wxWindowDC::DoSetClippingRegionAsRegion( const wxRegion& region )
if (!m_window) return;
if (!m_currentClippingRegion.IsNull())
if (!m_currentClippingRegion.IsEmpty())
m_currentClippingRegion.Intersect( region );
else
m_currentClippingRegion.Union( region );
m_currentClippingRegion = region;
#if USE_PAINT_REGION
if (!m_paintClippingRegion.IsNull())
if (!m_paintClippingRegion.IsEmpty())
m_currentClippingRegion.Intersect( m_paintClippingRegion );
#endif