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fixing gdiplus implementation, see #11282

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@62321 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Stefan Csomor
2009-10-07 05:53:19 +00:00
parent 6470a6a950
commit c315587c21
1 changed files with 28 additions and 14 deletions
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42
src/msw/graphics.cpp
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@@ -1454,23 +1454,37 @@ void wxGDIPlusContext::GetPartialTextExtents(const wxString& text, wxArrayDouble
RectF layoutRect(0,0, 100000.0f, 100000.0f);
StringFormat strFormat( StringFormat::GenericTypographic() );
CharacterRange* ranges = new CharacterRange[len] ;
Region* regions = new Region[len];
for( size_t i = 0 ; i < len ; ++i)
{
ranges[i].First = i ;
ranges[i].Length = 1 ;
}
strFormat.SetMeasurableCharacterRanges(len,ranges);
strFormat.SetFormatFlags( StringFormatFlagsMeasureTrailingSpaces | strFormat.GetFormatFlags() );
m_context->MeasureCharacterRanges(ws, -1 , f,layoutRect, &strFormat,1,regions) ;
size_t startPosition = 0;
size_t reminder = len;
const size_t maxSpan = 32;
CharacterRange* ranges = new CharacterRange[maxSpan] ;
Region* regions = new Region[maxSpan];
RectF bbox ;
for ( size_t i = 0 ; i < len ; ++i)
while( reminder > 0 )
{
regions[i].GetBounds(&bbox,m_context);
widths[i] = bbox.GetRight()-bbox.GetLeft();
size_t span = wxMin( maxSpan, reminder );
for( size_t i = 0 ; i < span ; ++i)
{
ranges[i].First = 0 ;
ranges[i].Length = startPosition+i+1 ;
}
strFormat.SetMeasurableCharacterRanges(span,ranges);
strFormat.SetFormatFlags( StringFormatFlagsMeasureTrailingSpaces | strFormat.GetFormatFlags() );
m_context->MeasureCharacterRanges(ws, -1 , f,layoutRect, &strFormat,span,regions) ;
RectF bbox ;
for ( size_t i = 0 ; i < span ; ++i)
{
regions[i].GetBounds(&bbox,m_context);
widths[startPosition+i] = bbox.Width;
}
reminder -= span;
startPosition += span;
}
delete[] ranges;
delete[] regions;
}
bool wxGDIPlusContext::ShouldOffset() const