X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/03647350fc7cd141953c72e0284e928847d30f44..779e28da630ef9fba6441fb0bab01cd538a7e7bb:/src/msw/bitmap.cpp?ds=inline diff --git a/src/msw/bitmap.cpp b/src/msw/bitmap.cpp index 850baa8602..98c813fd9d 100644 --- a/src/msw/bitmap.cpp +++ b/src/msw/bitmap.cpp @@ -238,8 +238,7 @@ void wxBitmapRefData::Free() } } - delete m_bitmapMask; - m_bitmapMask = NULL; + wxDELETE(m_bitmapMask); } // ---------------------------------------------------------------------------- @@ -343,8 +342,9 @@ bool wxBitmap::CopyFromIconOrCursor(const wxGDIImage& icon, wxDIB dib(iconInfo.hbmColor); if (dib.IsOk()) { - const unsigned char* pixels = dib.GetData(); - for (int idx = 0; idx < w*h*4; idx+=4) + unsigned char* const pixels = dib.GetData(); + int idx; + for ( idx = 0; idx < w*h*4; idx += 4 ) { if (pixels[idx+3] != 0) { @@ -354,6 +354,25 @@ bool wxBitmap::CopyFromIconOrCursor(const wxGDIImage& icon, break; } } + + if ( refData->m_hasAlpha ) + { + // If we do have alpha, ensure we use premultiplied + // data for our pixels as this is what the bitmaps + // created in other ways do and this is necessary + // for e.g. AlphaBlend() to work with this bitmap. + for ( idx = 0; idx < w*h*4; idx += 4 ) + { + const unsigned char a = pixels[idx+3]; + + pixels[idx] = ((pixels[idx] *a) + 127)/255; + pixels[idx+1] = ((pixels[idx+1]*a) + 127)/255; + pixels[idx+2] = ((pixels[idx+2]*a) + 127)/255; + } + + ::DeleteObject(refData->m_hBitmap); + refData->m_hBitmap = dib.Detach(); + } } } } @@ -388,7 +407,7 @@ bool wxBitmap::CopyFromCursor(const wxCursor& cursor, wxBitmapTransparency trans { UnRef(); - if ( !cursor.Ok() ) + if ( !cursor.IsOk() ) return false; return CopyFromIconOrCursor(cursor, transp); @@ -398,7 +417,7 @@ bool wxBitmap::CopyFromIcon(const wxIcon& icon, wxBitmapTransparency transp) { UnRef(); - if ( !icon.Ok() ) + if ( !icon.IsOk() ) return false; return CopyFromIconOrCursor(icon, transp); @@ -415,7 +434,7 @@ bool wxBitmap::CopyFromDIB(const wxDIB& dib) if ( !hbitmap ) return false; #else // ALWAYS_USE_DIB - HBITMAP hbitmap = ((wxDIB &)dib).Detach(); // const_cast + HBITMAP hbitmap = const_cast(dib).Detach(); #endif // SOMETIMES_USE_DIB/ALWAYS_USE_DIB UnRef(); @@ -494,7 +513,7 @@ wxBitmap::wxBitmap(const char bits[], int width, int height, int depth) else { // bits should already be in Windows standard format - data = (char *)bits; // const_cast is harmless + data = const_cast(bits); } HBITMAP hbmp = ::CreateBitmap(width, height, 1, depth, data); @@ -606,7 +625,7 @@ bool wxBitmap::DoCreate(int w, int h, int d, WXHDC hdc) SetHBITMAP((WXHBITMAP)hbmp); - return Ok(); + return IsOk(); } #if wxUSE_IMAGE @@ -740,7 +759,7 @@ wxImage wxBitmap::ConvertToImage() const // so the 'depth' argument is ignored. // TODO: transparency (create a mask image) - if (!Ok()) + if (!IsOk()) { wxFAIL_MSG( wxT("bitmap is invalid") ); return wxNullImage; @@ -748,7 +767,7 @@ wxImage wxBitmap::ConvertToImage() const wxImage image; - wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") ); + wxCHECK_MSG( IsOk(), wxNullImage, wxT("invalid bitmap") ); // create an wxImage object int width = GetWidth(); @@ -824,7 +843,7 @@ bool wxBitmap::CreateFromImage(const wxImage& image, const wxDC& dc) bool wxBitmap::CreateFromImage(const wxImage& image, int depth, WXHDC hdc) { - wxCHECK_MSG( image.Ok(), false, wxT("invalid image") ); + wxCHECK_MSG( image.IsOk(), false, wxT("invalid image") ); UnRef(); @@ -930,7 +949,7 @@ wxImage wxBitmap::ConvertToImage() const // and then DIB to our wxImage wxImage image = dib.ConvertToImage(); - if ( !image.Ok() ) + if ( !image.IsOk() ) { return wxNullImage; } @@ -1040,7 +1059,7 @@ bool wxBitmap::LoadFile(const wxString& filename, wxBitmapType type) else // no bitmap handler found { wxImage image; - if ( image.LoadFile( filename, type ) && image.Ok() ) + if ( image.LoadFile( filename, type ) && image.IsOk() ) { *this = wxBitmap(image); @@ -1085,7 +1104,7 @@ bool wxBitmap::SaveFile(const wxString& filename, { // FIXME what about palette? shouldn't we use it? wxImage image = ConvertToImage(); - if ( image.Ok() ) + if ( image.IsOk() ) { return image.SaveFile(filename, type); } @@ -1107,14 +1126,14 @@ wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect ) const wxBitmap wxBitmap::GetSubBitmapOfHDC( const wxRect& rect, WXHDC hdc ) const { - wxCHECK_MSG( Ok() && + wxCHECK_MSG( IsOk() && (rect.x >= 0) && (rect.y >= 0) && (rect.x+rect.width <= GetWidth()) && (rect.y+rect.height <= GetHeight()), wxNullBitmap, wxT("Invalid bitmap or bitmap region") ); wxBitmap ret( rect.width, rect.height, GetDepth() ); - wxASSERT_MSG( ret.Ok(), wxT("GetSubBitmap error") ); + wxASSERT_MSG( ret.IsOk(), wxT("GetSubBitmap error") ); #ifndef __WXMICROWIN__ // handle alpha channel, if any @@ -1249,7 +1268,7 @@ void wxBitmap::SetMask(wxMask *mask) void *wxBitmap::GetRawData(wxPixelDataBase& data, int bpp) { #if wxUSE_WXDIB - if ( !Ok() ) + if ( !IsOk() ) { // no bitmap, no data (raw or otherwise) return NULL; @@ -1327,7 +1346,7 @@ void *wxBitmap::GetRawData(wxPixelDataBase& data, int bpp) void wxBitmap::UngetRawData(wxPixelDataBase& dataBase) { #if wxUSE_WXDIB - if ( !Ok() ) + if ( !IsOk() ) return; if ( !&dataBase ) @@ -1428,7 +1447,7 @@ wxMask::~wxMask() bool wxMask::Create(const wxBitmap& bitmap) { #ifndef __WXMICROWIN__ - wxCHECK_MSG( bitmap.Ok() && bitmap.GetDepth() == 1, false, + wxCHECK_MSG( bitmap.IsOk() && bitmap.GetDepth() == 1, false, wxT("can't create mask from invalid or not monochrome bitmap") ); if ( m_maskBitmap ) @@ -1469,7 +1488,7 @@ bool wxMask::Create(const wxBitmap& bitmap, int paletteIndex) } #if wxUSE_PALETTE - if (bitmap.Ok() && bitmap.GetPalette()->Ok()) + if (bitmap.IsOk() && bitmap.GetPalette()->IsOk()) { unsigned char red, green, blue; if (bitmap.GetPalette()->GetRGB(paletteIndex, &red, &green, &blue)) @@ -1488,7 +1507,7 @@ bool wxMask::Create(const wxBitmap& bitmap, int paletteIndex) bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour) { #ifndef __WXMICROWIN__ - wxCHECK_MSG( bitmap.Ok(), false, wxT("invalid bitmap in wxMask::Create") ); + wxCHECK_MSG( bitmap.IsOk(), false, wxT("invalid bitmap in wxMask::Create") ); if ( m_maskBitmap ) { @@ -1626,7 +1645,7 @@ HICON wxBitmapToIconOrCursor(const wxBitmap& bmp, int hotSpotX, int hotSpotY) { - if ( !bmp.Ok() ) + if ( !bmp.IsOk() ) { // we can't create an icon/cursor form nothing return 0; @@ -1634,9 +1653,25 @@ HICON wxBitmapToIconOrCursor(const wxBitmap& bmp, if ( bmp.HasAlpha() ) { + HBITMAP hbmp; + +#if wxUSE_WXDIB && wxUSE_IMAGE + // CreateIconIndirect() requires non-pre-multiplied pixel data on input + // as it does pre-multiplication internally itself so we need to create + // a special DIB in such format to pass to it. This is inefficient but + // better than creating an icon with wrong colours. + AutoHBITMAP hbmpRelease; + hbmp = wxDIB(bmp.ConvertToImage(), + wxDIB::PixelFormat_NotPreMultiplied).Detach(); + hbmpRelease.Init(hbmp); +#else // !(wxUSE_WXDIB && wxUSE_IMAGE) + hbmp = GetHbitmapOf(bmp); +#endif // wxUSE_WXDIB && wxUSE_IMAGE + // 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); + AutoHBITMAP + hMonoBitmap(CreateBitmap(bmp.GetWidth(),bmp.GetHeight(),1,1,NULL)); ICONINFO iconInfo; wxZeroMemory(iconInfo); @@ -1648,13 +1683,9 @@ HICON wxBitmapToIconOrCursor(const wxBitmap& bmp, } iconInfo.hbmMask = hMonoBitmap; - iconInfo.hbmColor = GetHbitmapOf(bmp); - - HICON hicon = ::CreateIconIndirect(&iconInfo); + iconInfo.hbmColor = hbmp; - ::DeleteObject(hMonoBitmap); - - return hicon; + return ::CreateIconIndirect(&iconInfo); } wxMask* mask = bmp.GetMask(); @@ -1675,7 +1706,8 @@ HICON wxBitmapToIconOrCursor(const wxBitmap& bmp, iconInfo.yHotspot = hotSpotY; } - iconInfo.hbmMask = wxInvertMask((HBITMAP)mask->GetMaskBitmap()); + AutoHBITMAP hbmpMask(wxInvertMask((HBITMAP)mask->GetMaskBitmap())); + iconInfo.hbmMask = hbmpMask; iconInfo.hbmColor = GetHbitmapOf(bmp); // black out the transparent area to preserve background colour, because @@ -1701,9 +1733,6 @@ HICON wxBitmapToIconOrCursor(const wxBitmap& bmp, delete mask; } - // delete the inverted mask bitmap we created as well - ::DeleteObject(iconInfo.hbmMask); - return hicon; }