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Fix precision in wxGraphicsContext::{Stroke,Draw}Lines() under MSW.

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Use floating point coordinates instead of ints which were used for some
reason, resulting in a loss of precision.

Closes #16187.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76420 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2014-04-27 22:42:04 +00:00
parent bf793227d2
commit d75eb338c2
1 changed files with 6 additions and 6 deletions
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12
src/msw/graphics.cpp
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@@ -1489,11 +1489,11 @@ void wxGDIPlusContext::StrokeLines( size_t n, const wxPoint2DDouble *points)
if ( !m_pen.IsNull() ) if ( !m_pen.IsNull() )
{ {
wxGDIPlusOffsetHelper helper( m_context , ShouldOffset() ); wxGDIPlusOffsetHelper helper( m_context , ShouldOffset() );
Point *cpoints = new Point[n]; PointF *cpoints = new PointF[n];
for (size_t i = 0; i < n; i++) for (size_t i = 0; i < n; i++)
{ {
cpoints[i].X = (int)(points[i].m_x ); cpoints[i].X = static_cast<REAL>(points[i].m_x);
cpoints[i].Y = (int)(points[i].m_y ); cpoints[i].Y = static_cast<REAL>(points[i].m_y);
} // for (size_t i = 0; i < n; i++) } // for (size_t i = 0; i < n; i++)
m_context->DrawLines( ((wxGDIPlusPenData*)m_pen.GetGraphicsData())->GetGDIPlusPen() , cpoints , n ) ; m_context->DrawLines( ((wxGDIPlusPenData*)m_pen.GetGraphicsData())->GetGDIPlusPen() , cpoints , n ) ;
@@ -1507,11 +1507,11 @@ void wxGDIPlusContext::DrawLines( size_t n, const wxPoint2DDouble *points, wxPol
return; return;
wxGDIPlusOffsetHelper helper( m_context , ShouldOffset() ); wxGDIPlusOffsetHelper helper( m_context , ShouldOffset() );
Point *cpoints = new Point[n]; PointF *cpoints = new PointF[n];
for (size_t i = 0; i < n; i++) for (size_t i = 0; i < n; i++)
{ {
cpoints[i].X = (int)(points[i].m_x ); cpoints[i].X = static_cast<REAL>(points[i].m_x);
cpoints[i].Y = (int)(points[i].m_y ); cpoints[i].Y = static_cast<REAL>(points[i].m_y);
} // for (int i = 0; i < n; i++) } // for (int i = 0; i < n; i++)
if ( !m_brush.IsNull() ) if ( !m_brush.IsNull() )