+ m_window = window ;
+ wxTopLevelWindowMac* rootwindow = window->MacGetTopLevelWindow() ;
+ if (!rootwindow)
+ return;
+
+ m_ok = true ;
+
+#if wxMAC_USE_CORE_GRAPHICS
+ m_window->GetSize( &m_width , &m_height);
+ CGContextRef cg = (CGContextRef) window->MacGetCGContextRef();
+ m_release = false;
+ if ( cg == NULL )
+ {
+ SetGraphicsContext( wxGraphicsContext::Create( window ) ) ;
+ }
+ else
+ {
+ CGContextSaveGState( cg );
+ m_release = true ;
+ // make sure the context is having its origin at the wx-window coordinates of the
+ // view (read at the top of window.cpp about the differences)
+ if ( window->MacGetLeftBorderSize() != 0 || window->MacGetTopBorderSize() != 0 )
+ CGContextTranslateCTM( cg , -window->MacGetLeftBorderSize() , -window->MacGetTopBorderSize() );
+
+ SetGraphicsContext( wxGraphicsContext::CreateFromNative( cg ) );
+ }
+ SetClippingRegion( 0 , 0 , m_width , m_height ) ;
+#else
+ int x , y ;
+ x = y = 0 ;
+ window->MacWindowToRootWindow( &x , &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_deviceLocalOriginX , m_deviceLocalOriginY ) ;
+ CopyRgn( (RgnHandle) m_macBoundaryClipRgn , (RgnHandle) m_macCurrentClipRgn ) ;
+#endif
+ SetBackground(MacGetBackgroundBrush(window));
+
+ SetFont( window->GetFont() ) ;
+}
+
+wxWindowDC::~wxWindowDC()
+{
+#if wxMAC_USE_CORE_GRAPHICS
+ 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);
+ }
+#endif
+}
+
+void wxWindowDC::DoGetSize( int* width, int* height ) const
+{
+#if wxMAC_USE_CORE_GRAPHICS
+ if ( width )
+ *width = m_width;
+ if ( height )
+ *height = m_height;
+#else
+ wxCHECK_RET( m_window, _T("GetSize() doesn't work without window") );
+ m_window->GetSize(width, height);
+#endif
+}
+
+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;
+
+ HIRect rect;
+ CGImageRef image;
+ CGContextRef context;
+ void* data;
+
+ size_t bytesPerRow;
+
+ HIViewCreateOffscreenImage( handle, 0, &rect, &image);
+
+
+ int width = subrect != NULL ? subrect->width : (int)rect.size.width;
+ int height = subrect != NULL ? subrect->height : (int)rect.size.height ;
+
+ bytesPerRow = ( ( width * 8 * 4 + 7 ) / 8 );
+
+ data = calloc( 1, bytesPerRow * height );
+ context = CGBitmapContextCreate( data, width, height, 8, bytesPerRow, CGColorSpaceCreateDeviceRGB(), kCGImageAlphaPremultipliedFirst );
+
+ if ( subrect )
+ rect = CGRectOffset( rect, -subrect->x, -subrect->y ) ;
+ CGContextDrawImage( context, rect, image );
+
+ unsigned char* buffer = (unsigned char*) data;
+ wxBitmap bmp = wxBitmap(width, height, 32);
+ wxAlphaPixelData pixData(bmp, wxPoint(0,0), wxSize(width, height));
+
+ wxAlphaPixelData::Iterator p(pixData);
+ for (int y=0; y<height; y++) {
+ wxAlphaPixelData::Iterator rowStart = p;
+ for (int x=0; x<width; x++) {
+ unsigned char a = buffer[3];
+ p.Red() = a; buffer++;
+ p.Green() = a; buffer++;
+ p.Blue() = a; buffer++;
+ p.Alpha() = a; buffer++;
+ ++p;
+ }
+ p = rowStart;
+ p.OffsetY(pixData, 1);
+ }
+
+ return bmp;
projects / wxWidgets.git / blobdiff