]> git.saurik.com Git - wxWidgets.git/blobdiff - src/msw/dc.cpp
many fixes to wxTextCrtl, wxTreeCrtl, wxListBox,
[wxWidgets.git] / src / msw / dc.cpp
index bdecb6b626578fdbc59a611104d6821e5d4de4a8..f34b25550731bb52e41ae0d5a55bea59388ddbeb 100644 (file)
@@ -914,8 +914,8 @@ void wxDC::GetTextExtent(const wxString& string, long *x, long *y,
   GetTextExtentPoint((HDC) m_hDC, (char *)(const char *) string, strlen((char *)(const char *) string), &sizeRect);
   GetTextMetrics((HDC) m_hDC, &tm);
 
-  *x = XDEV2LOGREL(sizeRect.cx);
-  *y = YDEV2LOGREL(sizeRect.cy);
+  if (x) *x = XDEV2LOGREL(sizeRect.cx);
+  if (y) *y = YDEV2LOGREL(sizeRect.cy);
   if (descent) *descent = tm.tmDescent;
   if (externalLeading) *externalLeading = tm.tmExternalLeading;
 }
@@ -1181,53 +1181,107 @@ bool wxDC::Blit(long xdest, long ydest, long width, long height,
            ::SelectObject(dc_mask, 0);
            ::DeleteDC(dc_mask);
 #endif
-        // New code from Chris Breeze, 8/5/98
-
-               // create a temp buffer bitmap and DCs to access it and the mask
-               HDC dc_mask = ::CreateCompatibleDC((HDC) source->m_hDC);
-               HDC dc_buffer = ::CreateCompatibleDC((HDC) m_hDC);
-               HBITMAP buffer_bmap = ::CreateCompatibleBitmap((HDC) m_hDC, width, height);
-           ::SelectObject(dc_mask, (HBITMAP) source->m_selectedBitmap.GetMask()->GetMaskBitmap());
-           ::SelectObject(dc_buffer, buffer_bmap);
-
-        // copy dest to buffer
-               ::BitBlt(dc_buffer, 0, 0, (int)width, (int)height,
-                       (HDC) m_hDC, xdest1, ydest1, SRCCOPY);
-
-               // copy src to buffer using selected raster op
-               ::BitBlt(dc_buffer, 0, 0, (int)width, (int)height,
-                       (HDC) source->m_hDC, xsrc1, ysrc1, dwRop);
-
-               // set masked area in buffer to BLACK (pixel value 0)
-               COLORREF prevBkCol = ::SetBkColor((HDC) m_hDC, RGB(255, 255, 255));
-               COLORREF prevCol = ::SetTextColor((HDC) m_hDC, RGB(0, 0, 0));
-        ::BitBlt(dc_buffer, 0, 0, (int)width, (int)height,
-                       dc_mask, xsrc1, ysrc1, SRCAND);
-
-               // set unmasked area in dest to BLACK
-               ::SetBkColor((HDC) m_hDC, RGB(0, 0, 0));
-               ::SetTextColor((HDC) m_hDC, RGB(255, 255, 255));
-               ::BitBlt((HDC) m_hDC, xdest1, ydest1, (int)width, (int)height,
-                       dc_mask, xsrc1, ysrc1, SRCAND);
-               ::SetBkColor((HDC) m_hDC, prevBkCol);   // restore colours to original values
-               ::SetTextColor((HDC) m_hDC, prevCol);
-
-        // OR buffer to dest
-               success = (::BitBlt((HDC) m_hDC, xdest1, ydest1, (int)width, (int)height,
-                       dc_buffer, 0, 0, SRCPAINT) != 0);
-
-               // tidy up temporary DCs and bitmap
-               ::SelectObject(dc_mask, 0);
-           ::DeleteDC(dc_mask);
-               ::SelectObject(dc_buffer, 0);
-           ::DeleteDC(dc_buffer);
-               ::DeleteObject(buffer_bmap);
-    }
+        // New code from Chris Breeze, 15/7/98
+               // Blit bitmap with mask
+
+               if (IsKindOf(CLASSINFO(wxPrinterDC)))
+               {
+                       // If we are printing source colours are screen colours
+                       // not printer colours and so we need copy the bitmap
+                       // pixel by pixel.
+                       RECT rect;
+                       HDC dc_mask = ::CreateCompatibleDC((HDC) source->m_hDC);
+                       HDC dc_src = (HDC) source->m_hDC;
+
+                       ::SelectObject(dc_mask, (HBITMAP) source->m_selectedBitmap.GetMask()->GetMaskBitmap());
+                       for (int x = 0; x < width; x++)
+                       {
+                               for (int y = 0; y < height; y++)
+                               {
+                                       COLORREF cref = ::GetPixel(dc_mask, x, y);
+                                       if (cref)
+                                       {
+                                               HBRUSH brush = ::CreateSolidBrush(::GetPixel(dc_src, x, y));
+                                               rect.left = xdest1 + x; rect.right = rect.left + 1;
+                                               rect.top = ydest1 + y;  rect.bottom = rect.top + 1;
+                                               ::FillRect((HDC) m_hDC, &rect, brush);
+                                               ::DeleteObject(brush);
+                                       }
+                               }
+                       }
+                       ::SelectObject(dc_mask, 0);
+                       ::DeleteDC(dc_mask);
+               }
+               else
+               {
+                       // create a temp buffer bitmap and DCs to access it and the mask
+                       HDC dc_mask = ::CreateCompatibleDC((HDC) source->m_hDC);
+                       HDC dc_buffer = ::CreateCompatibleDC((HDC) m_hDC);
+                       HBITMAP buffer_bmap = ::CreateCompatibleBitmap((HDC) m_hDC, width, height);
+                       ::SelectObject(dc_mask, (HBITMAP) source->m_selectedBitmap.GetMask()->GetMaskBitmap());
+                       ::SelectObject(dc_buffer, buffer_bmap);
+
+                       // copy dest to buffer
+                       ::BitBlt(dc_buffer, 0, 0, (int)width, (int)height,
+                               (HDC) m_hDC, xdest1, ydest1, SRCCOPY);
+
+                       // copy src to buffer using selected raster op
+                       ::BitBlt(dc_buffer, 0, 0, (int)width, (int)height,
+                               (HDC) source->m_hDC, xsrc1, ysrc1, dwRop);
+
+                       // set masked area in buffer to BLACK (pixel value 0)
+                       COLORREF prevBkCol = ::SetBkColor((HDC) m_hDC, RGB(255, 255, 255));
+                       COLORREF prevCol = ::SetTextColor((HDC) m_hDC, RGB(0, 0, 0));
+                       ::BitBlt(dc_buffer, 0, 0, (int)width, (int)height,
+                               dc_mask, xsrc1, ysrc1, SRCAND);
+
+                       // set unmasked area in dest to BLACK
+                       ::SetBkColor((HDC) m_hDC, RGB(0, 0, 0));
+                       ::SetTextColor((HDC) m_hDC, RGB(255, 255, 255));
+                       ::BitBlt((HDC) m_hDC, xdest1, ydest1, (int)width, (int)height,
+                               dc_mask, xsrc1, ysrc1, SRCAND);
+                       ::SetBkColor((HDC) m_hDC, prevBkCol);   // restore colours to original values
+                       ::SetTextColor((HDC) m_hDC, prevCol);
+
+                       // OR buffer to dest
+                       success = (::BitBlt((HDC) m_hDC, xdest1, ydest1, (int)width, (int)height,
+                               dc_buffer, 0, 0, SRCPAINT) != 0);
+
+                       // tidy up temporary DCs and bitmap
+                       ::SelectObject(dc_mask, 0);
+                       ::DeleteDC(dc_mask);
+                       ::SelectObject(dc_buffer, 0);
+                       ::DeleteDC(dc_buffer);
+                       ::DeleteObject(buffer_bmap);
+               }
+       }
   }
   else
   {
+       if (IsKindOf(CLASSINFO(wxPrinterDC)))
+       {
+      // If we are printing source colours are screen colours
+      // not printer colours and so we need copy the bitmap
+      // pixel by pixel.
+      HDC dc_src = (HDC) source->m_hDC;
+      RECT rect;
+      for (int x = 0; x < width; x++)
+         {
+        for (int y = 0; y < height; y++)
+               {
+          HBRUSH brush = ::CreateSolidBrush(::GetPixel(dc_src, x, y));
+          rect.left = xdest1 + x;      rect.right = rect.left + 1;
+          rect.top = ydest1 + y;       rect.bottom = rect.top + 1;
+          ::FillRect((HDC) m_hDC, &rect, brush);
+          ::DeleteObject(brush);
+               }
+         }
+    }
+       else
+       {
       success = (BitBlt((HDC) m_hDC, xdest1, ydest1, (int)width, (int)height, (HDC) source->m_hDC,
                             xsrc1, ysrc1, dwRop) != 0);
+       }
   }
   ::SetTextColor((HDC)m_hDC, old_textground);
   ::SetBkColor((HDC)m_hDC, old_background);