WinCE fixes (in case a WinCE-friendly backend gets written one day)

[wxWidgets.git] / src / msw / bitmap.cpp

diff --git a/src/msw/bitmap.cpp b/src/msw/bitmap.cpp
index 3df871c59fa8e06aaec627e71ed2f4dff66a74ce..4477a07b19651c6ec49255196c2fff6f78e3dde2 100644 (file)
--- a/src/msw/bitmap.cpp
+++ b/src/msw/bitmap.cpp
@@ -17,10 +17,6 @@
 // headers
 // ----------------------------------------------------------------------------
 
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-    #pragma implementation "bitmap.h"
-#endif
-
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
@@ -310,10 +306,37 @@ bool wxBitmap::CopyFromIconOrCursor(const wxGDIImage& icon)
 
     refData->m_hBitmap = (WXHBITMAP)iconInfo.hbmColor;
 
-    // the mask returned by GetIconInfo() is inversed compared to the usual
-    // wxWin convention
-    refData->SetMask(wxInvertMask(iconInfo.hbmMask, w, h));
-
+#if wxUSE_WXDIB
+    // If the icon is 32 bits per pixel then it may have alpha channel data,
+    // although there are some icons that are 32 bpp but have no alpha... So
+    // convert to a DIB and manually check the 4th byte for each pixel.
+    BITMAP bm;
+    if ( ::GetObject(iconInfo.hbmColor, sizeof(BITMAP), (LPVOID)&bm)
+         && bm.bmBitsPixel == 32)
+    {
+        wxDIB dib(iconInfo.hbmColor);
+        if (dib.IsOk())
+        {
+            unsigned char* pixels = dib.GetData();
+            for (int idx=0; idx<w*h*4; idx+=4)
+            {
+                if (pixels[idx+3] != 0)
+                {
+                    // If there is an alpha byte that is non-zero then set the
+                    // alpha flag and bail out of the loop.
+                    refData->m_hasAlpha = true;
+                    break;
+                }
+            }
+        }
+    }
+#endif
+    if ( !refData->m_hasAlpha )
+    {
+        // the mask returned by GetIconInfo() is inverted compared to the usual
+        // wxWin convention
+        refData->SetMask(wxInvertMask(iconInfo.hbmMask, w, h));
+    }
 
     // delete the old one now as we don't need it any more
     ::DeleteObject(iconInfo.hbmMask);
@@ -408,7 +431,7 @@ wxBitmap::wxBitmap(const char bits[], int width, int height, int depth)
     {
         // we assume that it is in XBM format which is not quite the same as
         // the format CreateBitmap() wants because the order of bytes in the
-        // line is inversed!
+        // line is reversed!
         const size_t bytesPerLine = (width + 7) / 8;
         const size_t padding = bytesPerLine % 2;
         const size_t len = height * ( padding + bytesPerLine );
@@ -460,7 +483,7 @@ wxBitmap::wxBitmap(const char bits[], int width, int height, int depth)
 // Create from XPM data
 bool wxBitmap::CreateFromXpm(const char **data)
 {
-#if wxUSE_IMAGE && wxUSE_XPM
+#if wxUSE_IMAGE && wxUSE_XPM && wxUSE_WXDIB
     Init();
 
     wxCHECK_MSG( data != NULL, false, wxT("invalid bitmap data") )
@@ -803,7 +826,8 @@ bool wxBitmap::CreateFromImage(const wxImage& image, int depth, WXHDC hdc)
     wxDIB dib(image);
     if ( !dib.IsOk() )
         return false;
-
+       if (depth == -1)
+               depth = dib.GetDepth(); // Get depth from image if none specified
 
     // store the bitmap parameters
     wxBitmapRefData *refData = new wxBitmapRefData;
@@ -826,14 +850,14 @@ bool wxBitmap::CreateFromImage(const wxImage& image, int depth, WXHDC hdc)
         hbitmap = dib.Detach();
 
         refData->m_isDIB = true;
-        refData->m_depth = dib.GetDepth();
+        refData->m_depth = depth;
     }
 #ifndef ALWAYS_USE_DIB
     else // we need to convert DIB to DDB
     {
         hbitmap = dib.CreateDDB((HDC)hdc);
 
-        refData->m_depth = depth == -1 ? dib.GetDepth() : depth;
+        refData->m_depth = depth;
     }
 #endif // !ALWAYS_USE_DIB
 
@@ -878,7 +902,7 @@ bool wxBitmap::CreateFromImage(const wxImage& image, int depth, WXHDC hdc)
             SetMask(new wxMask((WXHBITMAP)hbitmap));
         }
 
-        delete data;
+        delete[] data;
     }
 
     return true;
@@ -987,7 +1011,7 @@ bool wxBitmap::LoadFile(const wxString& filename, long type)
 
         return handler->LoadFile(this, filename, type, -1, -1);
     }
-#if wxUSE_IMAGE
+#if wxUSE_IMAGE && wxUSE_WXDIB
     else // no bitmap handler found
     {
         wxImage image;
@@ -1031,7 +1055,7 @@ bool wxBitmap::SaveFile(const wxString& filename,
     {
         return handler->SaveFile(this, filename, type, palette);
     }
-#if wxUSE_IMAGE
+#if wxUSE_IMAGE && wxUSE_WXDIB
     else // no bitmap handler found
     {
         // FIXME what about palette? shouldn't we use it?
@@ -1064,7 +1088,7 @@ wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect) const
 #ifndef __WXMICROWIN__
     // handle alpha channel, if any
     if (HasAlpha())
-    ret.UseAlpha();
+        ret.UseAlpha();
 
     // copy bitmap data
     MemoryHDC dcSrc,
@@ -1125,6 +1149,15 @@ wxMask *wxBitmap::GetMask() const
     return GetBitmapData() ? GetBitmapData()->GetMask() : (wxMask *) NULL;
 }
 
+wxBitmap wxBitmap::GetMaskBitmap() const
+{
+    wxBitmap bmp;
+    wxMask *mask = GetMask();
+    if ( mask )
+        bmp.SetHBITMAP(mask->GetMaskBitmap());
+    return bmp;
+}
+
 #ifdef __WXDEBUG__
 
 wxDC *wxBitmap::GetSelectedInto() const
@@ -1214,7 +1247,7 @@ void *wxBitmap::GetRawData(wxPixelDataBase& data, int bpp)
     HBITMAP hDIB;
     if ( !GetBitmapData()->m_isDIB )
     {
-        wxCHECK_MSG( !GetBitmapData()->m_dib, FALSE,
+        wxCHECK_MSG( !GetBitmapData()->m_dib, NULL,
                         _T("GetRawData() may be called only once") );
 
         wxDIB *dib = new wxDIB(*this);
@@ -1563,7 +1596,7 @@ bool wxCreateDIB(long xSize, long ySize, long bitsPerPixel,
    // this value must be 1, 4, 8 or 24 so PixelDepth can only be
    lpDIBheader->bmiHeader.biBitCount = (WORD)(bitsPerPixel);
    lpDIBheader->bmiHeader.biCompression = BI_RGB;
-   lpDIBheader->bmiHeader.biSizeImage = xSize * abs(ySize) * bitsPerPixel >> 3;
+   lpDIBheader->bmiHeader.biSizeImage = (xSize * abs(ySize) * bitsPerPixel) >> 3;
    lpDIBheader->bmiHeader.biClrUsed = 256;
 
 
@@ -1603,7 +1636,33 @@ HICON wxBitmapToIconOrCursor(const wxBitmap& bmp,
         return 0;
     }
 
-    wxMask *mask = bmp.GetMask();
+    if ( bmp.HasAlpha() )
+    {
+        // Create an empty mask bitmap.
+        // it doesn't seem to work if we mess with the mask at all.
+        HBITMAP hMonoBitmap = CreateBitmap(bmp.GetWidth(),bmp.GetHeight(),1,1,NULL);
+
+        ICONINFO iconInfo;
+        wxZeroMemory(iconInfo);
+        iconInfo.fIcon = iconWanted;  // do we want an icon or a cursor?
+        if ( !iconWanted )
+        {
+            iconInfo.xHotspot = hotSpotX;
+            iconInfo.yHotspot = hotSpotY;
+        }
+
+        iconInfo.hbmMask = hMonoBitmap;
+        iconInfo.hbmColor = GetHbitmapOf(bmp);
+
+        HICON hicon = ::CreateIconIndirect(&iconInfo);
+
+        ::DeleteObject(hMonoBitmap);
+
+        return hicon;
+    }
+
+    wxMask* mask = bmp.GetMask();
+
     if ( !mask )
     {
         // we must have a mask for an icon, so even if it's probably incorrect,
@@ -1640,7 +1699,7 @@ HICON wxBitmapToIconOrCursor(const wxBitmap& bmp,
 
     HICON hicon = ::CreateIconIndirect(&iconInfo);
 
-    if ( !bmp.GetMask() )
+    if ( !bmp.GetMask() && !bmp.HasAlpha() )
     {
         // we created the mask, now delete it
         delete mask;