X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/8a438f46b50a70cff345870e1324226dc7809f0a..52af3158e974b042008474268570f3bdb7ce95ee:/src/mac/carbon/dcclient.cpp

diff --git a/src/mac/carbon/dcclient.cpp b/src/mac/carbon/dcclient.cpp
index 7023f8cc9f..2ec91c4760 100644
--- a/src/mac/carbon/dcclient.cpp
+++ b/src/mac/carbon/dcclient.cpp
@@ -112,6 +112,9 @@ static wxBrush MacGetBackgroundBrush( wxWindow* window )
 wxWindowDC::wxWindowDC()
 {
     m_window = NULL ;
+#if wxMAC_USE_CORE_GRAPHICS
+    m_release = false;
+#endif
 }
 
 wxWindowDC::wxWindowDC(wxWindow *window)
@@ -142,19 +145,17 @@ wxWindowDC::wxWindowDC(wxWindow *window)
 
         SetGraphicsContext( wxGraphicsContext::CreateFromNative( cg ) );
     }
-    m_graphicContext->SetPen( m_pen ) ;
-    m_graphicContext->SetBrush( m_brush ) ;
     SetClippingRegion( 0 , 0 , m_width , m_height ) ;
 #else
     int x , y ;
     x = y = 0 ;
     window->MacWindowToRootWindow( &x , &y ) ;
-    m_macLocalOrigin.x = x ;
-    m_macLocalOrigin.y = y ;
+    m_deviceLocalOriginX = x;
+    m_deviceLocalOriginY = y;
     m_macPort = UMAGetWindowPort( (WindowRef) rootwindow->MacGetWindowRef() ) ;
 
     CopyRgn( (RgnHandle) window->MacGetVisibleRegion(true).GetWXHRGN() , (RgnHandle) m_macBoundaryClipRgn ) ;
-    OffsetRgn( (RgnHandle) m_macBoundaryClipRgn , m_macLocalOrigin.x , m_macLocalOrigin.y ) ;
+    OffsetRgn( (RgnHandle) m_macBoundaryClipRgn , m_deviceLocalOriginX , m_deviceLocalOriginY ) ;
     CopyRgn( (RgnHandle) m_macBoundaryClipRgn , (RgnHandle) m_macCurrentClipRgn ) ;
 #endif
     SetBackground(MacGetBackgroundBrush(window));
@@ -165,11 +166,12 @@ wxWindowDC::wxWindowDC(wxWindow *window)
 wxWindowDC::~wxWindowDC()
 {
 #if wxMAC_USE_CORE_GRAPHICS
-    if ( m_release && m_graphicContext )
+    if ( m_release )
     {
+        // this must not necessarily be the current context, we must restore the state of the
+        // cg we started with above (before the CGContextTranslateCTM call)
         CGContextRef cg = (CGContextRef) m_window->MacGetCGContextRef();
         CGContextRestoreGState(cg);
-        //CGContextRef cg = (CGContextRef) m_graphicContext->GetNativeContext() ;
     }
 #endif
 }
@@ -189,6 +191,11 @@ void wxWindowDC::DoGetSize( int* width, int* height ) const
 
 wxBitmap wxWindowDC::DoGetAsBitmap(const wxRect *subrect) const
 {
+    // wxScreenDC is derived from wxWindowDC, so a screen dc will
+    // call this method when a Blit is performed with it as a source.
+    if (!m_window)
+        return wxNullBitmap;
+        
     ControlRef handle = (ControlRef) m_window->GetHandle();
     if ( !handle )
         return wxNullBitmap;
@@ -219,7 +226,6 @@ wxBitmap wxWindowDC::DoGetAsBitmap(const wxRect *subrect) const
     wxBitmap bmp = wxBitmap(width, height, 32);
     wxAlphaPixelData pixData(bmp, wxPoint(0,0), wxSize(width, height));
 
-    pixData.UseAlpha();
     wxAlphaPixelData::Iterator p(pixData);
     for (int y=0; y<height; y++) {
         wxAlphaPixelData::Iterator rowStart = p;
@@ -274,12 +280,12 @@ wxClientDC::wxClientDC(wxWindow *window)
     m_macPort = UMAGetWindowPort( windowref ) ;
     m_ok = true ;
 
-    m_macLocalOrigin.x = x ;
-    m_macLocalOrigin.y = y ;
+    m_deviceLocalOriginX = x ;
+    m_deviceLocalOriginY = y ;
     SetRectRgn( (RgnHandle) m_macBoundaryClipRgn , origin.x , origin.y , origin.x + size.x , origin.y + size.y ) ;
     SectRgn( (RgnHandle) m_macBoundaryClipRgn , (RgnHandle) window->MacGetVisibleRegion().GetWXHRGN() , (RgnHandle) m_macBoundaryClipRgn ) ;
     OffsetRgn( (RgnHandle) m_macBoundaryClipRgn , -origin.x , -origin.y ) ;
-    OffsetRgn( (RgnHandle) m_macBoundaryClipRgn , m_macLocalOrigin.x , m_macLocalOrigin.y ) ;
+    OffsetRgn( (RgnHandle) m_macBoundaryClipRgn , m_deviceLocalOriginX , m_deviceLocalOriginY ) ;
     CopyRgn( (RgnHandle) m_macBoundaryClipRgn ,(RgnHandle)  m_macCurrentClipRgn ) ;
 
     SetBackground(MacGetBackgroundBrush(window));
@@ -349,13 +355,13 @@ wxPaintDC::wxPaintDC(wxWindow *window)
     }
     // there is no out-of-order drawing on OSX
 #else
-    m_macLocalOrigin.x = x ;
-    m_macLocalOrigin.y = y ;
+    m_deviceLocalOriginX = x ;
+    m_deviceLocalOriginY = y ;
     SetRectRgn( (RgnHandle) m_macBoundaryClipRgn , origin.x , origin.y , origin.x + size.x , origin.y + size.y ) ;
     SectRgn( (RgnHandle) m_macBoundaryClipRgn , (RgnHandle) window->MacGetVisibleRegion().GetWXHRGN() , (RgnHandle) m_macBoundaryClipRgn ) ;
     OffsetRgn( (RgnHandle) m_macBoundaryClipRgn , -origin.x , -origin.y ) ;
     SectRgn( (RgnHandle) m_macBoundaryClipRgn  , (RgnHandle) window->GetUpdateRegion().GetWXHRGN() , (RgnHandle) m_macBoundaryClipRgn ) ;
-    OffsetRgn( (RgnHandle) m_macBoundaryClipRgn , m_macLocalOrigin.x , m_macLocalOrigin.y ) ;
+    OffsetRgn( (RgnHandle) m_macBoundaryClipRgn , m_deviceLocalOriginX , m_deviceLocalOriginY ) ;
     CopyRgn( (RgnHandle) m_macBoundaryClipRgn , (RgnHandle) m_macCurrentClipRgn ) ;
     SetBackground(MacGetBackgroundBrush(window));
 #endif