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Fix possible usage of uninitialized variable in wxQt wxDC code

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Make sure rasterColourOp is always initialized, even if none of the
switch cases matches, to avoid warnings about possibly uninitialized
variable.

See https://github.com/wxWidgets/wxWidgets/pull/1048
This commit is contained in:
Jay Nabonne
2018-12-06 11:13:54 +00:00
committed by Vadim Zeitlin
parent 194936ab26
commit 82a66e56b2
1 changed files with 1 additions and 12 deletions
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13
src/qt/dc.cpp
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@@ -220,7 +220,7 @@ void wxQtDCImpl::SetLogicalFunction(wxRasterOperationMode function)
{
m_logicalFunction = function;
wxQtRasterColourOp rasterColourOp;
wxQtRasterColourOp rasterColourOp = wxQtNONE;
switch ( function )
{
case wxCLEAR: // 0
@@ -229,7 +229,6 @@ void wxQtDCImpl::SetLogicalFunction(wxRasterOperationMode function)
break;
case wxXOR: // src XOR dst
m_qtPainter->setCompositionMode( QPainter::RasterOp_SourceXorDestination );
rasterColourOp = wxQtNONE;
break;
case wxINVERT: // NOT dst => dst XOR WHITE
m_qtPainter->setCompositionMode( QPainter::RasterOp_SourceXorDestination );
@@ -241,35 +240,27 @@ void wxQtDCImpl::SetLogicalFunction(wxRasterOperationMode function)
break;
case wxAND_REVERSE: // src AND (NOT dst)
m_qtPainter->setCompositionMode( QPainter::RasterOp_SourceAndNotDestination );
rasterColourOp = wxQtNONE;
break;
case wxCOPY: // src
m_qtPainter->setCompositionMode( QPainter::CompositionMode_SourceOver );
rasterColourOp = wxQtNONE;
break;
case wxAND: // src AND dst
m_qtPainter->setCompositionMode( QPainter::RasterOp_SourceAndDestination );
rasterColourOp = wxQtNONE;
break;
case wxAND_INVERT: // (NOT src) AND dst
m_qtPainter->setCompositionMode( QPainter::RasterOp_NotSourceAndDestination );
rasterColourOp = wxQtNONE;
break;
case wxNO_OP: // dst
m_qtPainter->setCompositionMode( QPainter::CompositionMode_DestinationOver );
rasterColourOp = wxQtNONE;
break;
case wxNOR: // (NOT src) AND (NOT dst)
m_qtPainter->setCompositionMode( QPainter::RasterOp_NotSourceAndNotDestination );
rasterColourOp = wxQtNONE;
break;
case wxEQUIV: // (NOT src) XOR dst
m_qtPainter->setCompositionMode( QPainter::RasterOp_NotSourceXorDestination );
rasterColourOp = wxQtNONE;
break;
case wxSRC_INVERT: // (NOT src)
m_qtPainter->setCompositionMode( QPainter::RasterOp_NotSource );
rasterColourOp = wxQtNONE;
break;
case wxOR_INVERT: // (NOT src) OR dst
m_qtPainter->setCompositionMode( QPainter::RasterOp_SourceOrDestination );
@@ -277,11 +268,9 @@ void wxQtDCImpl::SetLogicalFunction(wxRasterOperationMode function)
break;
case wxNAND: // (NOT src) OR (NOT dst)
m_qtPainter->setCompositionMode( QPainter::RasterOp_NotSourceOrNotDestination );
rasterColourOp = wxQtNONE;
break;
case wxOR: // src OR dst
m_qtPainter->setCompositionMode( QPainter::RasterOp_SourceOrDestination );
rasterColourOp = wxQtNONE;
break;
case wxSET: // 1
m_qtPainter->setCompositionMode( QPainter::CompositionMode_SourceOver );