+#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
+{
+ 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));
+
+ pixData.UseAlpha();
+ 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