X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/1d63de4a455bde7bad81cb34724cb1df3219cd26..9b58521dc97c069e4e3fc283a6d90497e1bcc80c:/src/msw/dc.cpp

diff --git a/src/msw/dc.cpp b/src/msw/dc.cpp
index 9f7482b9bd..63f940e5a9 100644
--- a/src/msw/dc.cpp
+++ b/src/msw/dc.cpp
@@ -131,13 +131,13 @@ static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
 // otherwise
 static bool AlphaBlt(HDC hdcDst,
                      int x, int y, int w, int h,
-                     HDC hdcSrc,
+                     int srcX, int srcY, HDC hdcSrc,
                      const wxBitmap& bmpSrc);
 
 #ifdef wxHAVE_RAW_BITMAP
 // our (limited) AlphaBlend() replacement
 static void
-wxAlphaBlend(HDC hdcDst, int x, int y, int w, int h, const wxBitmap& bmp);
+wxAlphaBlend(HDC hdcDst, int x, int y, int w, int h, int srcX, int srcY, const wxBitmap& bmp);
 #endif
 
 // ----------------------------------------------------------------------------
@@ -1065,7 +1065,7 @@ void wxDC::DoDrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask
         MemoryHDC hdcMem;
         SelectInHDC select(hdcMem, GetHbitmapOf(bmp));
 
-        if ( AlphaBlt(GetHdc(), x, y, width, height, hdcMem, bmp) )
+        if ( AlphaBlt(GetHdc(), x, y, width, height, 0, 0, hdcMem, bmp) )
             return;
     }
 
@@ -1635,7 +1635,7 @@ void wxDC::DoGetTextExtent(const wxString& string, wxCoord *x, wxCoord *y,
     SIZE sizeRect;
     TEXTMETRIC tm;
 
-    GetTextExtentPoint(GetHdc(), string, string.length(), &sizeRect);
+    ::GetTextExtentPoint32(GetHdc(), string, string.length(), &sizeRect);
     GetTextMetrics(GetHdc(), &tm);
 
     if (x)
@@ -1913,7 +1913,7 @@ bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest,
             (m_selectedBitmap.Ok() && m_selectedBitmap.HasAlpha())) )
     {
         if ( AlphaBlt(GetHdc(), xdest, ydest, width, height,
-                      GetHdcOf(*source), bmpSrc) )
+                      xsrc, ysrc, GetHdcOf(*source), bmpSrc) )
             return true;
     }
 
@@ -2388,7 +2388,7 @@ IMPLEMENT_DYNAMIC_CLASS(wxDCModule, wxModule)
 
 static bool AlphaBlt(HDC hdcDst,
                      int x, int y, int width, int height,
-                     HDC hdcSrc,
+                     int srcX, int srcY, HDC hdcSrc,
                      const wxBitmap& bmp)
 {
     wxASSERT_MSG( bmp.Ok() && bmp.HasAlpha(), _T("AlphaBlt(): invalid bitmap") );
@@ -2436,7 +2436,7 @@ static bool AlphaBlt(HDC hdcDst,
         bf.AlphaFormat = AC_SRC_ALPHA;
 
         if ( pfnAlphaBlend(hdcDst, x, y, width, height,
-                           hdcSrc, 0, 0, width, height,
+                           hdcSrc, srcX, srcY, width, height,
                            bf) )
         {
             // skip wxAlphaBlend() call below
@@ -2450,7 +2450,7 @@ static bool AlphaBlt(HDC hdcDst,
     // AlphaBlend() unavailable of failed: use our own (probably much slower)
     // implementation
 #ifdef wxHAVE_RAW_BITMAP
-    wxAlphaBlend(hdcDst, x, y, width, height, bmp);
+    wxAlphaBlend(hdcDst, x, y, width, height, srcX, srcY, bmp);
 
     return true;
 #else // !wxHAVE_RAW_BITMAP
@@ -2466,7 +2466,7 @@ static bool AlphaBlt(HDC hdcDst,
 #ifdef wxHAVE_RAW_BITMAP
 
 static void
-wxAlphaBlend(HDC hdcDst, int xDst, int yDst, int w, int h, const wxBitmap& bmpSrc)
+wxAlphaBlend(HDC hdcDst, int xDst, int yDst, int w, int h, int srcX, int srcY, const wxBitmap& bmpSrc)
 {
     // get the destination DC pixels
     wxBitmap bmpDst(w, h, 32 /* force creating RGBA DIB */);
@@ -2488,11 +2488,13 @@ wxAlphaBlend(HDC hdcDst, int xDst, int yDst, int w, int h, const wxBitmap& bmpSr
     wxAlphaPixelData::Iterator pDst(dataDst),
                                pSrc(dataSrc);
 
+    pSrc.Offset(dataSrc, srcX, srcY);
+
     for ( int y = 0; y < h; y++ )
     {
         wxAlphaPixelData::Iterator pDstRowStart = pDst,
                                    pSrcRowStart = pSrc;
-
+                                   
         for ( int x = 0; x < w; x++ )
         {
             // note that source bitmap uses premultiplied alpha (as required by