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Fix wxGCDC::Clear() for Cairo, and possibly MSW.

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Maximum positive coordinate Cairo can handle is 2^23 - 1.
Also convert coordinates to logical so it works right with modified origin or scale.
See #14529


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72279 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Paul Cornett 2012-08-02 16:25:14 +00:00
parent 487f662754
commit 0c4438d26e
1 changed files with 4 additions and 3 deletions
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7
src/common/dcgraph.cpp
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@ -38,8 +38,6 @@
#endif
#endif
#include <limits.h> // for INT_MAX
//-----------------------------------------------------------------------------
// constants
//-----------------------------------------------------------------------------
@ -1060,7 +1058,10 @@ void wxGCDCImpl::Clear(void)
m_graphicContext->SetPen( p );
wxCompositionMode formerMode = m_graphicContext->GetCompositionMode();
m_graphicContext->SetCompositionMode(wxCOMPOSITION_SOURCE);
DoDrawRectangle( 0, 0, INT_MAX , INT_MAX );
// maximum positive coordinate Cairo can handle is 2^23 - 1
DoDrawRectangle(
DeviceToLogicalX(0), DeviceToLogicalY(0),
DeviceToLogicalXRel(0x007fffff), DeviceToLogicalYRel(0x007fffff));
m_graphicContext->SetCompositionMode(formerMode);
m_graphicContext->SetPen( m_pen );
m_graphicContext->SetBrush( m_brush );