+// ----------------------------------------------------------------------------
+// wxPrinterDC bit blitting/bitmap drawing
+// ----------------------------------------------------------------------------
+
+// Win16 doesn't define GDI_ERROR.
+#ifndef GDI_ERROR
+#define GDI_ERROR -1
+#endif
+
+void wxPrinterDC::DoDrawBitmap(const wxBitmap &bmp,
+ wxCoord x, wxCoord y,
+ bool useMask)
+{
+ wxCHECK_RET( bmp.Ok(), _T("invalid bitmap in wxPrinterDC::DrawBitmap") );
+
+ int width = bmp.GetWidth(),
+ height = bmp.GetHeight();
+
+ if ( ::GetDeviceCaps(GetHdc(), RASTERCAPS) & RC_STRETCHDIB )
+ {
+ BITMAPINFO *info = (BITMAPINFO *) malloc( sizeof( BITMAPINFOHEADER ) + 256 * sizeof(RGBQUAD ) );
+ memset( info, 0, sizeof( BITMAPINFOHEADER ) );
+
+ int iBitsSize = ((width + 3 ) & ~3 ) * height;
+
+ void* bits = malloc( iBitsSize );
+
+ info->bmiHeader.biSize = sizeof( BITMAPINFOHEADER );
+ info->bmiHeader.biWidth = width;
+ info->bmiHeader.biHeight = height;
+ info->bmiHeader.biPlanes = 1;
+ info->bmiHeader.biBitCount = 8;
+ info->bmiHeader.biCompression = BI_RGB;
+
+ ScreenHDC display;
+ if ( GetDIBits(display, GetHbitmapOf(bmp), 0,
+ bmp.GetHeight(), bits, info,
+ DIB_RGB_COLORS) )
+ {
+ if ( ::StretchDIBits(GetHdc(), x, y,
+ width, height,
+ 0 , 0, width, height,
+ bits, info,
+ DIB_RGB_COLORS, SRCCOPY) == GDI_ERROR )
+ {
+ wxLogLastError("StretchDIBits");
+ }
+ }
+
+ free(bits);
+ free(info);
+ }
+ else // no support for StretchDIBits()
+ {
+ wxMemoryDC memDC;
+ memDC.SelectObject(bmp);
+
+ Blit(x, y, width, height, &memDC, 0, 0, wxCOPY, useMask);
+
+ memDC.SelectObject(wxNullBitmap);
+ }
+}
+
+bool wxPrinterDC::DoBlit(wxCoord xdest, wxCoord ydest,
+ wxCoord width, wxCoord height,
+ wxDC *source,
+ wxCoord xsrc, wxCoord ysrc,
+ int rop, bool useMask)
+{
+ bool success = TRUE;
+
+ if ( useMask )
+ {
+ // 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_src = GetHdcOf(*source);
+ HDC dc_mask = ::CreateCompatibleDC(dc_src);
+
+ ::SelectObject(dc_mask, (HBITMAP) source->GetSelectedBitmap().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 = xdest + x;
+ rect.right = rect.left + 1;
+ rect.top = ydest + y;
+ rect.bottom = rect.top + 1;
+ ::FillRect(GetHdc(), &rect, brush);
+ ::DeleteObject(brush);
+ }
+ }
+ }
+ ::SelectObject(dc_mask, 0);
+ ::DeleteDC(dc_mask);
+ }
+ else // no mask
+ {
+ if ( ::GetDeviceCaps(GetHdc(), RASTERCAPS) & RC_STRETCHDIB )
+ {
+ wxBitmap& bmp = source->GetSelectedBitmap();
+ int width = bmp.GetWidth(),
+ height = bmp.GetHeight();
+
+ BITMAPINFO *info = (BITMAPINFO *) malloc( sizeof( BITMAPINFOHEADER ) + 256 * sizeof(RGBQUAD ) );
+ int iBitsSize = ((width + 3 ) & ~3 ) * height;
+
+ void* bits = malloc( iBitsSize );
+
+ memset( info , 0 , sizeof( BITMAPINFOHEADER ) );
+
+ info->bmiHeader.biSize = sizeof( BITMAPINFOHEADER );
+ info->bmiHeader.biWidth = width;
+ info->bmiHeader.biHeight = height;
+ info->bmiHeader.biPlanes = 1;
+ info->bmiHeader.biBitCount = 8;
+ info->bmiHeader.biCompression = BI_RGB;
+
+ ScreenHDC display;
+ if ( !::GetDIBits(display, GetHbitmapOf(bmp), 0,
+ height, bits, info, DIB_RGB_COLORS) )
+ {
+ wxLogLastError("GetDIBits");
+
+ success = FALSE;
+ }
+
+ if ( success )
+ {
+ success = ::StretchDIBits(GetHdc(), xdest, ydest,
+ width, height,
+ xsrc, ysrc,
+ width, height,
+ bits, info ,
+ DIB_RGB_COLORS,
+ SRCCOPY) != GDI_ERROR;
+ if ( !success )
+ {
+ wxLogLastError("StretchDIBits");
+ }
+ }
+
+ free(bits);
+ free(info);
+ }
+ else // no support for StretchDIBits
+ {
+ // as we are printing, source colours are screen colours not printer
+ // colours and so we need copy the bitmap pixel by pixel.
+ HDC dc_src = GetHdcOf(*source);
+ RECT rect;
+ for (int y = 0; y < height; y++)
+ {
+ // This is Stefan Csomor's optimisation, where identical adjacent
+ // pixels are drawn together.
+ for (int x = 0; x < width; x++)
+ {
+ COLORREF col = ::GetPixel(dc_src, x, y);
+ HBRUSH brush = ::CreateSolidBrush( col );
+
+ rect.left = xdest + x;
+ rect.top = ydest + y;
+ while( (x + 1 < width) && (::GetPixel(dc_src, x + 1, y) == col ) )
+ {
+ ++x;
+ }
+ rect.right = xdest + x + 1;
+ rect.bottom = rect.top + 1;
+ ::FillRect((HDC) m_hDC, &rect, brush);
+ ::DeleteObject(brush);
+ }
+ }
+ }
+ }
+
+ return success;
+}
projects / wxWidgets.git / blobdiff