From e828c96ac2ddac5a584a3c7210b8b7d85ee58285 Mon Sep 17 00:00:00 2001
From: Stefan Csomor <csomor@advancedconcepts.ch>
Date: Wed, 14 Sep 2005 12:05:48 +0000
Subject: [PATCH] adding Robert Lang's native CG-Bezier patch

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@35502 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---
 include/wx/mac/carbon/dc.h |  5 +++
 src/mac/carbon/dccg.cpp    | 64 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 69 insertions(+)

diff --git a/include/wx/mac/carbon/dc.h b/include/wx/mac/carbon/dc.h
index 62a3961fa2..13aa350424 100644
--- a/include/wx/mac/carbon/dc.h
+++ b/include/wx/mac/carbon/dc.h
@@ -54,6 +54,8 @@ public :
     
     virtual void AddLineToPoint( wxCoord x1 , wxCoord y1 ) = 0 ;
     
+    virtual void AddQuadCurveToPoint( wxCoord cx1, wxCoord cy1, wxCoord x1, wxCoord y1 ) = 0 ;
+
     virtual void AddRectangle( wxCoord x, wxCoord y, wxCoord w, wxCoord h ) = 0 ;
     
     virtual void AddCircle( wxCoord x, wxCoord y , wxCoord r ) = 0 ;
@@ -237,6 +239,9 @@ protected:
     virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const;
 
     virtual void DoDrawPoint(wxCoord x, wxCoord y);
+#if wxMAC_USE_CORE_GRAPHICS && wxUSE_SPLINES
+    virtual void DoDrawSpline(wxList *points);
+#endif
     virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2);
 
     virtual void DoDrawArc(wxCoord x1, wxCoord y1,
diff --git a/src/mac/carbon/dccg.cpp b/src/mac/carbon/dccg.cpp
index e8b9ca065a..5d99b38b95 100755
--- a/src/mac/carbon/dccg.cpp
+++ b/src/mac/carbon/dccg.cpp
@@ -157,6 +157,11 @@ void wxMacCGPath::AddLineToPoint( wxCoord x1 , wxCoord y1 )
     CGPathAddLineToPoint( m_path , NULL , x1 , y1 ) ;
 }
 
+void wxMacCGPath::AddQuadCurveToPoint( wxCoord cx1, wxCoord cy1, wxCoord x1, wxCoord y1 )
+{
+    CGPathAddQuadCurveToPoint( m_path , NULL , cx1 , cy1 , x1 , y1 );
+}
+
 void wxMacCGPath::AddRectangle( wxCoord x, wxCoord y, wxCoord w, wxCoord h )
 {
     CGRect cgRect = { { x , y } , { w , h } } ;
@@ -1421,6 +1426,65 @@ void  wxDC::DoDrawLines(int n, wxPoint points[],
     delete path ;
 }
 
+#if wxUSE_SPLINES
+void wxDC::DoDrawSpline(wxList *points)
+{
+    wxCHECK_RET(Ok(), wxT("Invalid DC"));
+    
+    if ( m_logicalFunction != wxCOPY )
+        return ;
+    
+    wxGraphicPath* path = m_graphicContext->CreatePath() ;
+    
+    wxList::compatibility_iterator node = points->GetFirst();
+    if (node == wxList::compatibility_iterator())
+        // empty list
+        return;
+    
+    wxPoint *p = (wxPoint *)node->GetData();
+    
+    wxCoord x1 = p->x;
+    wxCoord y1 = p->y;
+    
+    node = node->GetNext();
+    p = (wxPoint *)node->GetData();
+    
+    wxCoord x2 = p->x;
+    wxCoord y2 = p->y;
+    wxCoord cx1 = ( x1 + x2 ) / 2;
+    wxCoord cy1 = ( y1 + y2 ) / 2;
+    
+    path->MoveToPoint( XLOG2DEVMAC( x1 ) , XLOG2DEVMAC( y1 ) ) ;
+    path->AddLineToPoint( XLOG2DEVMAC( cx1 ) , XLOG2DEVMAC( cy1 ) ) ;
+    
+#if !wxUSE_STL
+    while ((node = node->GetNext()) != NULL)
+#else
+    while ((node = node->GetNext()))
+#endif // !wxUSE_STL
+    {
+        p = (wxPoint *)node->GetData();
+        x1 = x2;
+        y1 = y2;
+        x2 = p->x;
+        y2 = p->y;
+        wxCoord cx4 = (x1 + x2) / 2;
+        wxCoord cy4 = (y1 + y2) / 2;
+        
+        path->AddQuadCurveToPoint( XLOG2DEVMAC( x1 ) , XLOG2DEVMAC( y1 ) , 
+                                   XLOG2DEVMAC( cx4 ) , XLOG2DEVMAC( cy4 ) ) ;
+        
+        cx1 = cx4;
+        cy1 = cy4;
+    }
+            
+    path->AddLineToPoint( XLOG2DEVMAC( x2 ) , XLOG2DEVMAC( y2 ) ) ;
+    
+    m_graphicContext->StrokePath( path ) ;
+    delete path ;
+}
+#endif
+
 void  wxDC::DoDrawPolygon(int n, wxPoint points[],
                           wxCoord xoffset, wxCoord yoffset,
                           int fillStyle )
-- 
2.45.2