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adding raster op hook to graphics context (10.4 only, partial XOR/INVERT support)

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@43764 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Stefan Csomor
2006-12-03 15:30:29 +00:00
parent b64e704702
commit 277ccdafe1
1 changed files with 50 additions and 2 deletions
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52
src/mac/carbon/graphics.cpp
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@@ -37,6 +37,13 @@
#if MAC_OS_X_VERSION_MAX_ALLOWED <= MAC_OS_X_VERSION_10_4
typedef float CGFloat;
#endif
#ifndef wxMAC_USE_CORE_GRAPHICS_BLEND_MODES
#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
#define wxMAC_USE_CORE_GRAPHICS_BLEND_MODES 1
#else
#define wxMAC_USE_CORE_GRAPHICS_BLEND_MODES 0
#endif
#endif
//-----------------------------------------------------------------------------
// constants
@@ -161,7 +168,7 @@ public :
void StrokeLineSegments( CGContextRef ctxRef , const CGPoint pts[] , size_t count )
{
#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
if ( UMAGetSystemVersion() >= 0x1040 )
if ( CGContextStrokeLineSegments!=NULL )
{
CGContextStrokeLineSegments( ctxRef , pts , count );
}
@@ -457,7 +464,12 @@ void wxMacCoreGraphicsPenData::Apply( wxGraphicsContext* context )
}
else
{
CGContextSetStrokeColorWithColor( cg , m_color );
if ( context->GetLogicalFunction() == wxINVERT || context->GetLogicalFunction() == wxXOR )
{
CGContextSetRGBStrokeColor( cg , 1.0, 1.0 , 1.0, 1.0 );
}
else
CGContextSetStrokeColorWithColor( cg , m_color );
}
}
@@ -1133,6 +1145,7 @@ public:
virtual void * GetNativeContext();
bool SetLogicalFunction( int function );
//
// transformation
//
@@ -1310,6 +1323,41 @@ void wxMacCoreGraphicsContext::EnsureIsValid()
}
}
bool wxMacCoreGraphicsContext::SetLogicalFunction( int function )
{
if (m_logicalFunction == function)
return true;
EnsureIsValid();
bool retval = false;
if ( function == wxCOPY )
{
retval = true;
#if wxMAC_USE_CORE_GRAPHICS_BLEND_MODES
if ( CGContextSetBlendMode != NULL )
{
CGContextSetBlendMode( m_cgContext, kCGBlendModeNormal );
}
#endif
}
else if ( function == wxINVERT || function == wxXOR )
{
#if wxMAC_USE_CORE_GRAPHICS_BLEND_MODES
if ( CGContextSetBlendMode != NULL )
{
// change color to white
CGContextSetBlendMode( m_cgContext, kCGBlendModeExclusion );
retval = true;
}
#endif
}
if (retval)
m_logicalFunction = function;
return retval ;
}
void wxMacCoreGraphicsContext::Clip( const wxRegion &region )
{