X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/64c8307c93601b867d0d9557e4f25ca54ae6073b..d8f2f99ff72b7aa656765799936f0a1038cf3a8b:/src/common/dcgraph.cpp?ds=sidebyside

diff --git a/src/common/dcgraph.cpp b/src/common/dcgraph.cpp
index e0ff46275c..c0bcd97b1a 100644
--- a/src/common/dcgraph.cpp
+++ b/src/common/dcgraph.cpp
@@ -3,7 +3,7 @@
 // Purpose:     graphics context methods common to all platforms
 // Author:      Stefan Csomor
 // Modified by:
-// Created:     
+// Created:
 // RCS-ID:      $Id$
 // Copyright:   (c) Stefan Csomor
 // Licence:     wxWindows licence
@@ -27,6 +27,10 @@
     #include "wx/region.h"
 #endif
 
+#ifndef wxMAC_USE_CORE_GRAPHICS_BLEND_MODES
+    #define wxMAC_USE_CORE_GRAPHICS_BLEND_MODES 0
+#endif
+
 //-----------------------------------------------------------------------------
 // constants
 //-----------------------------------------------------------------------------
@@ -58,18 +62,20 @@ wxGCDC::wxGCDC()
 }
 
 void wxGCDC::SetGraphicsContext( wxGraphicsContext* ctx )
-{ 
+{
     delete m_graphicContext;
     m_graphicContext = ctx;
-    m_matrixOriginal = m_graphicContext->GetTransform();
+    if ( m_graphicContext )
+    {
+        m_matrixOriginal = m_graphicContext->GetTransform();
+        m_ok = true;
+    }
 }
 
 wxGCDC::wxGCDC(const wxWindowDC& dc)
 {
     Init();
-    m_graphicContext = wxGraphicsContext::Create(dc);
-    m_matrixOriginal = m_graphicContext->GetTransform();
-    m_ok = true;
+    SetGraphicsContext( wxGraphicsContext::Create(dc) );
     if ( dc.GetFont().Ok())
         m_graphicContext->SetFont( m_graphicContext->CreateFont(dc.GetFont(),dc.GetTextForeground()));
     if ( dc.GetPen().Ok())
@@ -295,8 +301,9 @@ void wxGCDC::ComputeScaleAndOrigin()
     m_matrixCurrent = m_graphicContext->CreateMatrix();
     m_matrixCurrent.Translate( m_deviceOriginX, m_deviceOriginY );
     m_matrixCurrent.Scale( m_scaleX, m_scaleY );
-    m_matrixCurrent.Translate( m_logicalOriginX, m_logicalOriginY );
-    
+    // the logical origin sets the origin to have new coordinates
+    m_matrixCurrent.Translate( -m_logicalOriginX, -m_logicalOriginY );
+
     m_graphicContext->SetTransform( m_matrixOriginal );
     m_graphicContext->ConcatTransform( m_matrixCurrent );
 }
@@ -699,7 +706,7 @@ bool wxGCDC::DoBlit(
 {
     wxCHECK_MSG( Ok(), false, wxT("wxGCDC(cg)::DoBlit - invalid DC") );
     wxCHECK_MSG( source->Ok(), false, wxT("wxGCDC(cg)::DoBlit - invalid source DC") );
-    
+
     if ( logical_func == wxNO_OP )
         return true;
     else if ( logical_func != wxCOPY )
@@ -716,9 +723,9 @@ bool wxGCDC::DoBlit(
 
     wxRect subrect(source-> LogicalToDeviceX(xsrc),source-> LogicalToDeviceY(ysrc),
         source-> LogicalToDeviceXRel(width),source-> LogicalToDeviceYRel(height));
-        
+
     wxBitmap blit = source->GetAsBitmap( &subrect );
-        
+
     if ( blit.Ok() )
     {
         m_graphicContext->DrawBitmap( blit, xdest , ydest , width , height );
@@ -780,13 +787,13 @@ void wxGCDC::DoGetTextExtent( const wxString &str, wxCoord *width, wxCoord *heig
     m_graphicContext->GetTextExtent( str, &w, &h, &d, &e );
 
     if ( height )
-        *height = h;
+        *height = (wxCoord)h;
     if ( descent )
-        *descent = d;
+        *descent = (wxCoord)d;
     if ( externalLeading )
-        *externalLeading =e;
+        *externalLeading = (wxCoord)e;
     if ( width )
-        *width = w;
+        *width = (wxCoord)w;
 
     if ( theFont )
     {
@@ -835,7 +842,7 @@ void wxGCDC::Clear(void)
     wxPen p = *wxTRANSPARENT_PEN;
     m_graphicContext->SetPen( p );
     DoDrawRectangle( 0, 0, 32000 , 32000 );
-    m_graphicContext->SetPen( m_pen );    
+    m_graphicContext->SetPen( m_pen );
     m_graphicContext->SetBrush( m_brush );
 }