X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/b0ea5d96038f143169458ba032451427bbf93b3a..e69d5138dc8f95e294ae6d03beb4f321406f4e34:/src/msw/bitmap.cpp diff --git a/src/msw/bitmap.cpp b/src/msw/bitmap.cpp index 139c60f331..4585726428 100644 --- a/src/msw/bitmap.cpp +++ b/src/msw/bitmap.cpp @@ -1,5 +1,5 @@ //////////////////////////////////////////////////////////////////////////// -// Name: bitmap.cpp +// Name: src/msw/bitmap.cpp // Purpose: wxBitmap // Author: Julian Smart // Modified by: @@ -17,10 +17,6 @@ // headers // ---------------------------------------------------------------------------- -#ifdef __GNUG__ - #pragma implementation "bitmap.h" -#endif - // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" @@ -28,6 +24,8 @@ #pragma hdrstop #endif +#include "wx/bitmap.h" + #ifndef WX_PRECOMP #include @@ -36,21 +34,22 @@ #include "wx/app.h" #include "wx/palette.h" #include "wx/dcmemory.h" - #include "wx/bitmap.h" #include "wx/icon.h" + #include "wx/log.h" + #include "wx/image.h" #endif #include "wx/msw/private.h" -#include "wx/log.h" -#if !defined(__WXMICROWIN__) -#include "wx/msw/dib.h" +#if wxUSE_WXDIB + #include "wx/msw/dib.h" #endif -#include "wx/image.h" #include "wx/xpmdecod.h" -#include "wx/rawbmp.h" +#ifdef wxHAVE_RAW_BITMAP + #include "wx/rawbmp.h" +#endif // missing from mingw32 header #ifndef CLR_INVALID @@ -65,6 +64,7 @@ class WXDLLEXPORT wxBitmapRefData : public wxGDIImageRefData { public: wxBitmapRefData(); + wxBitmapRefData(const wxBitmapRefData& data); virtual ~wxBitmapRefData() { Free(); } virtual void Free(); @@ -100,15 +100,27 @@ public: wxDC *m_selectedInto; #endif // __WXDEBUG__ +#if wxUSE_WXDIB + // when GetRawData() is called for a DDB we need to convert it to a DIB + // first to be able to provide direct access to it and we cache that DIB + // here and convert it back to DDB when UngetRawData() is called + wxDIB *m_dib; +#endif + // true if we have alpha transparency info and can be drawn using // AlphaBlend() bool m_hasAlpha; + // true if our HBITMAP is a DIB section, false if it is a DDB + bool m_isDIB; + private: // optional mask for transparent drawing wxMask *m_bitmapMask; - DECLARE_NO_COPY_CLASS(wxBitmapRefData) + + // not implemented + wxBitmapRefData& operator=(const wxBitmapRefData&); }; // ---------------------------------------------------------------------------- @@ -129,28 +141,44 @@ IMPLEMENT_DYNAMIC_CLASS(wxBitmapHandler, wxObject) // ---------------------------------------------------------------------------- // decide whether we should create a DIB or a DDB for the given parameters -static bool wxShouldCreateDIB(int w, int h, int d, WXHDC hdc) -{ - // here is the logic: - // - // (a) if hdc is specified, the caller explicitly wants DDB - // (b) otherwise, create a DIB if depth >= 24 (we don't support 16bpp or - // less DIBs anyhow) - // (c) finally, create DIBs under Win9x even if the depth hasn't been - // explicitly specified but the current display depth is 24 or more - // and the image is "big", i.e. > 16Mb which is the theoretical limit - // for DDBs under Win9x - // - // consequences (all of which seem to make sense): - // - // (i) by default, DDBs are created (depth == -1 usually) - // (ii) DIBs can be created by explicitly specifying the depth - // (iii) using a DC always forces creating a DDB - return !hdc && - (d >= 24 || - (d == -1 && - wxDIB::GetLineSize(w, wxDisplayDepth())*h > 16*1024*1024)); -} +// +// NB: we always use DIBs under Windows CE as this is much simpler (even if +// also less efficient...) and we obviously can't use them if there is no +// DIB support compiled in at all +#ifdef __WXWINCE__ + static inline bool wxShouldCreateDIB(int, int, int, WXHDC) { return true; } + + #define ALWAYS_USE_DIB +#elif !wxUSE_WXDIB + // no sense in defining wxShouldCreateDIB() as we can't compile code + // executed if it is true, so we have to use #if's anyhow + #define NEVER_USE_DIB +#else // wxUSE_WXDIB && !__WXWINCE__ + static inline bool wxShouldCreateDIB(int w, int h, int d, WXHDC hdc) + { + // here is the logic: + // + // (a) if hdc is specified, the caller explicitly wants DDB + // (b) otherwise, create a DIB if depth >= 24 (we don't support 16bpp + // or less DIBs anyhow) + // (c) finally, create DIBs under Win9x even if the depth hasn't been + // explicitly specified but the current display depth is 24 or + // more and the image is "big", i.e. > 16Mb which is the + // theoretical limit for DDBs under Win9x + // + // consequences (all of which seem to make sense): + // + // (i) by default, DDBs are created (depth == -1 usually) + // (ii) DIBs can be created by explicitly specifying the depth + // (iii) using a DC always forces creating a DDB + return !hdc && + (d >= 24 || + (d == -1 && + wxDIB::GetLineSize(w, wxDisplayDepth())*h > 16*1024*1024)); + } + + #define SOMETIMES_USE_DIB +#endif // different DIB usage scenarious // ---------------------------------------------------------------------------- // wxBitmapRefData @@ -162,8 +190,31 @@ wxBitmapRefData::wxBitmapRefData() m_selectedInto = NULL; #endif m_bitmapMask = NULL; + m_hBitmap = (WXHBITMAP) NULL; - m_hasAlpha = FALSE; +#if wxUSE_WXDIB + m_dib = NULL; +#endif + + m_isDIB = + m_hasAlpha = false; +} + +wxBitmapRefData::wxBitmapRefData(const wxBitmapRefData& data) + : wxGDIImageRefData(data) +{ +#ifdef __WXDEBUG__ + m_selectedInto = NULL; +#endif + + // can't copy the mask as the other bitmap destroys it + m_bitmapMask = NULL; + + wxASSERT_MSG( !data.m_isDIB, + _T("can't copy bitmap locked for raw access!") ); + m_isDIB = false; + + m_hasAlpha = data.m_hasAlpha; } void wxBitmapRefData::Free() @@ -171,6 +222,10 @@ void wxBitmapRefData::Free() wxASSERT_MSG( !m_selectedInto, wxT("deleting bitmap still selected into wxMemoryDC") ); +#if wxUSE_WXDIB + wxASSERT_MSG( !m_dib, _T("forgot to call wxBitmap::UngetRawData()!") ); +#endif + if ( m_hBitmap) { if ( !::DeleteObject((HBITMAP)m_hBitmap) ) @@ -187,22 +242,42 @@ void wxBitmapRefData::Free() // wxBitmap creation // ---------------------------------------------------------------------------- -// this function should be called from all wxBitmap ctors -void wxBitmap::Init() +wxGDIImageRefData *wxBitmap::CreateData() const { - // m_refData = NULL; done in the base class ctor + return new wxBitmapRefData; } -wxGDIImageRefData *wxBitmap::CreateData() const +wxObjectRefData *wxBitmap::CloneRefData(const wxObjectRefData *dataOrig) const { - return new wxBitmapRefData; + const wxBitmapRefData * + data = wx_static_cast(const wxBitmapRefData *, dataOrig); + if ( !data ) + return NULL; + + wxBitmap *self = wx_const_cast(wxBitmap *, this); + +#if wxUSE_WXDIB + // copy the other bitmap + if ( data->m_hBitmap ) + { + wxDIB dib((HBITMAP)(data->m_hBitmap)); + self->CopyFromDIB(dib); + } + else +#endif // wxUSE_WXDIB + { + // don't copy the bitmap data, but do copy the size, depth, ... + self->m_refData = new wxBitmapRefData(*data); + } + + return m_refData; } #ifdef __WIN32__ bool wxBitmap::CopyFromIconOrCursor(const wxGDIImage& icon) { -#ifndef __WXMICROWIN__ +#if !defined(__WXMICROWIN__) && !defined(__WXWINCE__) // it may be either HICON or HCURSOR HICON hicon = (HICON)icon.GetHandle(); @@ -211,7 +286,7 @@ bool wxBitmap::CopyFromIconOrCursor(const wxGDIImage& icon) { wxLogLastError(wxT("GetIconInfo")); - return FALSE; + return false; } wxBitmapRefData *refData = new wxBitmapRefData; @@ -226,21 +301,45 @@ 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; idxm_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); -#if WXWIN_COMPATIBILITY_2 - refData->m_ok = TRUE; -#endif // WXWIN_COMPATIBILITY_2 - - return TRUE; + return true; #else - return FALSE; + wxUnusedVar(icon); + return false; #endif } @@ -251,15 +350,9 @@ bool wxBitmap::CopyFromCursor(const wxCursor& cursor) UnRef(); if ( !cursor.Ok() ) - return FALSE; + return false; -#ifdef __WIN16__ - wxFAIL_MSG( _T("don't know how to convert cursor to bitmap") ); - - return FALSE; -#else return CopyFromIconOrCursor(cursor); -#endif // Win16 } bool wxBitmap::CopyFromIcon(const wxIcon& icon) @@ -267,52 +360,24 @@ bool wxBitmap::CopyFromIcon(const wxIcon& icon) UnRef(); if ( !icon.Ok() ) - return FALSE; - - // GetIconInfo() doesn't exist under Win16 and I don't know any other way - // to create a bitmap from icon there - but using this way we won't have - // the mask (FIXME) -#ifdef __WIN16__ - int width = icon.GetWidth(), - height = icon.GetHeight(); - - // copy the icon to the bitmap - ScreenHDC hdcScreen; - HDC hdc = ::CreateCompatibleDC(hdcScreen); - HBITMAP hbitmap = ::CreateCompatibleBitmap(hdcScreen, width, height); - HBITMAP hbmpOld = (HBITMAP)::SelectObject(hdc, hbitmap); - - ::DrawIcon(hdc, 0, 0, GetHiconOf(icon)); + return false; - ::SelectObject(hdc, hbmpOld); - ::DeleteDC(hdc); - - wxBitmapRefData *refData = new wxBitmapRefData; - m_refData = refData; - - refData->m_width = width; - refData->m_height = height; - refData->m_depth = wxDisplayDepth(); - - refData->m_hBitmap = (WXHBITMAP)hbitmap; - -#if WXWIN_COMPATIBILITY_2 - refData->m_ok = TRUE; -#endif // WXWIN_COMPATIBILITY_2 - - return TRUE; -#else // Win32 return CopyFromIconOrCursor(icon); -#endif // Win16/Win32 } +#ifndef NEVER_USE_DIB + bool wxBitmap::CopyFromDIB(const wxDIB& dib) { - wxCHECK_MSG( dib.IsOk(), FALSE, _T("invalid DIB in CopyFromDIB") ); + wxCHECK_MSG( dib.IsOk(), false, _T("invalid DIB in CopyFromDIB") ); +#ifdef SOMETIMES_USE_DIB HBITMAP hbitmap = dib.CreateDDB(); if ( !hbitmap ) - return FALSE; + return false; +#else // ALWAYS_USE_DIB + HBITMAP hbitmap = ((wxDIB &)dib).Detach(); // const_cast +#endif // SOMETIMES_USE_DIB/ALWAYS_USE_DIB UnRef(); @@ -335,17 +400,17 @@ bool wxBitmap::CopyFromDIB(const wxDIB& dib) delete palette; #endif // wxUSE_PALETTE - return TRUE; + return true; } +#endif // NEVER_USE_DIB + wxBitmap::~wxBitmap() { } wxBitmap::wxBitmap(const char bits[], int width, int height, int depth) { - Init(); - #ifndef __WXMICROWIN__ wxBitmapRefData *refData = new wxBitmapRefData; m_refData = refData; @@ -359,7 +424,7 @@ 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 ); @@ -377,10 +442,10 @@ wxBitmap::wxBitmap(const char bits[], int width, int height, int depth) for ( int bits = 0; bits < 8; bits++) { reversed <<= 1; - reversed |= (val & 0x01); + reversed |= (unsigned char)(val & 0x01); val >>= 1; } - *dst++ = reversed; + *dst++ = ~reversed; } if ( padding ) @@ -408,43 +473,23 @@ wxBitmap::wxBitmap(const char bits[], int width, int height, int depth) #endif } -// Create from XPM data -bool wxBitmap::CreateFromXpm(const char **data) -{ -#if wxUSE_IMAGE && wxUSE_XPM - Init(); - - wxCHECK_MSG( data != NULL, FALSE, wxT("invalid bitmap data") ) - - wxXPMDecoder decoder; - wxImage img = decoder.ReadData(data); - wxCHECK_MSG( img.Ok(), FALSE, wxT("invalid bitmap data") ) - - *this = wxBitmap(img); - return TRUE; -#else - return FALSE; -#endif -} - wxBitmap::wxBitmap(int w, int h, int d) { - Init(); - (void)Create(w, h, d); } -wxBitmap::wxBitmap(void *data, long type, int width, int height, int depth) +wxBitmap::wxBitmap(int w, int h, const wxDC& dc) { - Init(); + (void)Create(w, h, dc); +} +wxBitmap::wxBitmap(const void* data, long type, int width, int height, int depth) +{ (void)Create(data, type, width, height, depth); } wxBitmap::wxBitmap(const wxString& filename, wxBitmapType type) { - Init(); - LoadFile(filename, (int)type); } @@ -455,7 +500,7 @@ bool wxBitmap::Create(int width, int height, int depth) bool wxBitmap::Create(int width, int height, const wxDC& dc) { - wxCHECK_MSG( dc.Ok(), FALSE, _T("invalid HDC in wxBitmap::Create()") ); + wxCHECK_MSG( dc.Ok(), false, _T("invalid HDC in wxBitmap::Create()") ); return DoCreate(width, height, -1, dc.GetHDC()); } @@ -469,8 +514,9 @@ bool wxBitmap::DoCreate(int w, int h, int d, WXHDC hdc) GetBitmapData()->m_width = w; GetBitmapData()->m_height = h; - HBITMAP hbmp; + HBITMAP hbmp wxDUMMY_INITIALIZE(0); +#ifndef NEVER_USE_DIB if ( wxShouldCreateDIB(w, h, d, hdc) ) { if ( d == -1 ) @@ -481,21 +527,18 @@ bool wxBitmap::DoCreate(int w, int h, int d, WXHDC hdc) wxDIB dib(w, h, d); if ( !dib.IsOk() ) - return FALSE; + return false; // don't delete the DIB section in dib object dtor hbmp = dib.Detach(); + GetBitmapData()->m_isDIB = true; GetBitmapData()->m_depth = d; - GetBitmapData()->m_hasAlpha = d == 32; // 32bpp DIBs have alpha channel } else // create a DDB +#endif // NEVER_USE_DIB { - if ( d == -1 ) - d = wxDisplayDepth(); - - GetBitmapData()->m_depth = d; - +#ifndef ALWAYS_USE_DIB #ifndef __WXMICROWIN__ if ( d > 0 ) { @@ -504,8 +547,10 @@ bool wxBitmap::DoCreate(int w, int h, int d, WXHDC hdc) { wxLogLastError(wxT("CreateBitmap")); } + + GetBitmapData()->m_depth = d; } - else + else // d == 0, create bitmap compatible with the screen #endif // !__WXMICROWIN__ { ScreenHDC dc; @@ -517,14 +562,11 @@ bool wxBitmap::DoCreate(int w, int h, int d, WXHDC hdc) GetBitmapData()->m_depth = wxDisplayDepth(); } +#endif // !ALWAYS_USE_DIB } SetHBITMAP((WXHBITMAP)hbmp); -#if WXWIN_COMPATIBILITY_2 - GetBitmapData()->m_ok = hbmp != 0; -#endif // WXWIN_COMPATIBILITY_2 - return Ok(); } @@ -565,7 +607,7 @@ bool wxBitmap::CreateFromImage(const wxImage& image, int depth, const wxDC& dc) if (hBitmap == NULL) { ::ReleaseDC(NULL, hScreenDC); - return FALSE; + return false; } HDC hMemDC = ::CreateCompatibleDC(hScreenDC); @@ -591,7 +633,7 @@ bool wxBitmap::CreateFromImage(const wxImage& image, int depth, const wxDC& dc) if (!hMaskBitmap) { - hasMask = FALSE; + hasMask = false; } else { @@ -602,7 +644,7 @@ bool wxBitmap::CreateFromImage(const wxImage& image, int depth, const wxDC& dc) hOldMaskBitmap = ::SelectObject( hMaskDC, hMaskBitmap); } #else - hasMask = FALSE; + hasMask = false; #endif } @@ -649,12 +691,7 @@ bool wxBitmap::CreateFromImage(const wxImage& image, int depth, const wxDC& dc) SetPalette(image.GetPalette()); #endif // wxUSE_PALETTE -#if WXWIN_COMPATIBILITY_2 - // check the wxBitmap object - GetBitmapData()->SetOk(); -#endif // WXWIN_COMPATIBILITY_2 - - return TRUE; + return true; } wxImage wxBitmap::ConvertToImage() const @@ -733,15 +770,17 @@ bool wxBitmap::CreateFromImage(const wxImage& image, int depth) bool wxBitmap::CreateFromImage(const wxImage& image, const wxDC& dc) { - wxCHECK_MSG( dc.Ok(), FALSE, + wxCHECK_MSG( dc.Ok(), false, _T("invalid HDC in wxBitmap::CreateFromImage()") ); return CreateFromImage(image, -1, dc.GetHDC()); } -bool wxBitmap::CreateFromImage(const wxImage& image, int depth, WXHDC hdc ) +#if wxUSE_WXDIB + +bool wxBitmap::CreateFromImage(const wxImage& image, int depth, WXHDC hdc) { - wxCHECK_MSG( image.Ok(), FALSE, wxT("invalid image") ); + wxCHECK_MSG( image.Ok(), false, wxT("invalid image") ); UnRef(); @@ -751,8 +790,10 @@ bool wxBitmap::CreateFromImage(const wxImage& image, int depth, WXHDC hdc ) wxDIB dib(image); if ( !dib.IsOk() ) - return FALSE; + return false; + if ( depth == -1 ) + depth = dib.GetDepth(); // Get depth from image if none specified // store the bitmap parameters wxBitmapRefData *refData = new wxBitmapRefData; @@ -764,169 +805,175 @@ bool wxBitmap::CreateFromImage(const wxImage& image, int depth, WXHDC hdc ) // next either store DIB as is or create a DDB from it - HBITMAP hbitmap; + HBITMAP hbitmap wxDUMMY_INITIALIZE(0); // are we going to use DIB? - if ( wxShouldCreateDIB(w, h, depth, hdc) ) + // + // NB: DDBs don't support alpha so if we have alpha channel we must use DIB + if ( image.HasAlpha() || wxShouldCreateDIB(w, h, depth, hdc) ) { // don't delete the DIB section in dib object dtor hbitmap = dib.Detach(); - refData->m_depth = dib.GetDepth(); + refData->m_isDIB = true; + 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 ? wxDisplayDepth() : depth; + refData->m_depth = depth; } +#endif // !ALWAYS_USE_DIB // validate this object SetHBITMAP((WXHBITMAP)hbitmap); -#if WXWIN_COMPATIBILITY_2 - m_refData->m_ok = TRUE; -#endif // WXWIN_COMPATIBILITY_2 - // finally also set the mask if we have one if ( image.HasMask() ) { - SetMask(new wxMask(*this, wxColour(image.GetMaskRed(), - image.GetMaskGreen(), - image.GetMaskBlue()))); + const size_t len = 2*((w+15)/16); + BYTE *src = image.GetData(); + BYTE *data = new BYTE[h*len]; + memset(data, 0, h*len); + BYTE r = image.GetMaskRed(), + g = image.GetMaskGreen(), + b = image.GetMaskBlue(); + BYTE *dst = data; + for ( int y = 0; y < h; y++, dst += len ) + { + BYTE *dstLine = dst; + BYTE mask = 0x80; + for ( int x = 0; x < w; x++, src += 3 ) + { + if (src[0] != r || src[1] != g || src[2] != b) + *dstLine |= mask; + + if ( (mask >>= 1) == 0 ) + { + dstLine++; + mask = 0x80; + } + } + } + + hbitmap = ::CreateBitmap(w, h, 1, 1, data); + if ( !hbitmap ) + { + wxLogLastError(_T("CreateBitmap(mask)")); + } + else + { + SetMask(new wxMask((WXHBITMAP)hbitmap)); + } + + delete[] data; } - return TRUE; + return true; } wxImage wxBitmap::ConvertToImage() const { - wxImage image; - - wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") ); + // convert DDB to DIB + wxDIB dib(*this); - // create an wxImage object - int width = GetWidth(); - int height = GetHeight(); - image.Create( width, height ); - unsigned char *data = image.GetData(); - if( !data ) + if ( !dib.IsOk() ) { - wxFAIL_MSG( wxT("could not allocate data for image") ); return wxNullImage; } - // calc the number of bytes per scanline and padding in the DIB - int bytePerLine = width*3; - int sizeDWORD = sizeof( DWORD ); - int lineBoundary = bytePerLine % sizeDWORD; - int padding = 0; - if( lineBoundary > 0 ) - { - padding = sizeDWORD - lineBoundary; - bytePerLine += padding; - } - - // create a DIB header - int headersize = sizeof(BITMAPINFOHEADER); - BITMAPINFO *lpDIBh = (BITMAPINFO *) malloc( headersize ); - if( !lpDIBh ) - { - wxFAIL_MSG( wxT("could not allocate data for DIB header") ); - free( data ); - return wxNullImage; - } - // Fill in the DIB header - lpDIBh->bmiHeader.biSize = headersize; - lpDIBh->bmiHeader.biWidth = width; - lpDIBh->bmiHeader.biHeight = -height; - lpDIBh->bmiHeader.biSizeImage = bytePerLine * height; - lpDIBh->bmiHeader.biPlanes = 1; - lpDIBh->bmiHeader.biBitCount = 24; - lpDIBh->bmiHeader.biCompression = BI_RGB; - lpDIBh->bmiHeader.biClrUsed = 0; - // These seem not really needed for our purpose here. - lpDIBh->bmiHeader.biClrImportant = 0; - lpDIBh->bmiHeader.biXPelsPerMeter = 0; - lpDIBh->bmiHeader.biYPelsPerMeter = 0; - // memory for DIB data - unsigned char *lpBits; - lpBits = (unsigned char *) malloc( lpDIBh->bmiHeader.biSizeImage ); - if( !lpBits ) + // and then DIB to our wxImage + wxImage image = dib.ConvertToImage(); + if ( !image.Ok() ) { - wxFAIL_MSG( wxT("could not allocate data for DIB") ); - free( data ); - free( lpDIBh ); return wxNullImage; } - // copy data from the device-dependent bitmap to the DIB - HDC hdc = ::GetDC(NULL); - HBITMAP hbitmap; - hbitmap = (HBITMAP) GetHBITMAP(); - ::GetDIBits( hdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS ); - - // copy DIB data into the wxImage object - int i, j; - unsigned char *ptdata = data; - unsigned char *ptbits = lpBits; - for( i=0; iGetMaskBitmap() ) + // now do the same for the mask, if we have any + HBITMAP hbmpMask = GetMask() ? (HBITMAP) GetMask()->GetMaskBitmap() : NULL; + if ( hbmpMask ) { - hbitmap = (HBITMAP) GetMask()->GetMaskBitmap(); - // memory DC created, color set, data copied, and memory DC deleted - HDC memdc = ::CreateCompatibleDC( hdc ); - ::SetTextColor( memdc, RGB( 0, 0, 0 ) ); - ::SetBkColor( memdc, RGB( 255, 255, 255 ) ); - ::GetDIBits( memdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS ); - ::DeleteDC( memdc ); - // background color set to RGB(16,16,16) in consistent with wxGTK - unsigned char r=16, g=16, b=16; - ptdata = data; - ptbits = lpBits; - for( i=0; i> 3; + const int maskBytesPerLine = wxDIB::GetLineSize(w, bpp); + unsigned char *data = image.GetData(); + + // remember that DIBs are stored in bottom to top order + unsigned char * + maskLineStart = dibMask.GetData() + ((h - 1) * maskBytesPerLine); + + for ( int y = 0; y < h; y++, maskLineStart -= maskBytesPerLine ) { - if( *ptbits != 0 ) - ptdata += 3; - else + // traverse one mask DIB line + unsigned char *mask = maskLineStart; + for ( int x = 0; x < w; x++, mask += maskBytesPerPixel ) { - *(ptdata++) = r; - *(ptdata++) = g; - *(ptdata++) = b; + // should this pixel be transparent? + if ( *mask ) + { + // no, check that it isn't transparent by accident + if ( (data[0] == MASK_RED) && + (data[1] == MASK_GREEN) && + (data[2] == MASK_BLUE) ) + { + // we have to fudge the colour a bit to prevent + // this pixel from appearing transparent + data[2] = MASK_BLUE_REPLACEMENT; + } + + data += 3; + } + else // yes, transparent pixel + { + *data++ = MASK_RED; + *data++ = MASK_GREEN; + *data++ = MASK_BLUE; + } } - ptbits += 3; } - ptbits += padding; + + image.SetMaskColour(MASK_RED, MASK_GREEN, MASK_BLUE); } - image.SetMaskColour( r, g, b ); - image.SetMask( TRUE ); } - else - { - image.SetMask( FALSE ); - } - // free allocated resources - ::ReleaseDC(NULL, hdc); - free(lpDIBh); - free(lpBits); return image; } +#else // !wxUSE_WXDIB + +bool +wxBitmap::CreateFromImage(const wxImage& WXUNUSED(image), + int WXUNUSED(depth), + WXHDC WXUNUSED(hdc)) +{ + return false; +} + +wxImage wxBitmap::ConvertToImage() const +{ + return wxImage(); +} + +#endif // wxUSE_WXDIB/!wxUSE_WXDIB + #endif // wxUSE_IMAGE // ---------------------------------------------------------------------------- @@ -945,23 +992,23 @@ bool wxBitmap::LoadFile(const wxString& filename, long type) return handler->LoadFile(this, filename, type, -1, -1); } -#if wxUSE_IMAGE - else +#if wxUSE_IMAGE && wxUSE_WXDIB + else // no bitmap handler found { wxImage image; if ( image.LoadFile( filename, type ) && image.Ok() ) { *this = wxBitmap(image); - return TRUE; + return true; } } #endif // wxUSE_IMAGE - return FALSE; + return false; } -bool wxBitmap::Create(void *data, long type, int width, int height, int depth) +bool wxBitmap::Create(const void* data, long type, int width, int height, int depth) { UnRef(); @@ -971,7 +1018,7 @@ bool wxBitmap::Create(void *data, long type, int width, int height, int depth) { wxLogDebug(wxT("Failed to create bitmap: no bitmap handler for type %ld defined."), type); - return FALSE; + return false; } m_refData = new wxBitmapRefData; @@ -989,8 +1036,8 @@ bool wxBitmap::SaveFile(const wxString& filename, { return handler->SaveFile(this, filename, type, palette); } -#if wxUSE_IMAGE - else +#if wxUSE_IMAGE && wxUSE_WXDIB + else // no bitmap handler found { // FIXME what about palette? shouldn't we use it? wxImage image = ConvertToImage(); @@ -1001,7 +1048,7 @@ bool wxBitmap::SaveFile(const wxString& filename, } #endif // wxUSE_IMAGE - return FALSE; + return false; } // ---------------------------------------------------------------------------- @@ -1016,11 +1063,13 @@ wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect) const (rect.y+rect.height <= GetHeight()), wxNullBitmap, wxT("Invalid bitmap or bitmap region") ); - wxBitmap ret( rect.width, rect.height ); + wxBitmap ret( rect.width, rect.height, GetDepth() ); wxASSERT_MSG( ret.Ok(), wxT("GetSubBitmap error") ); #ifndef __WXMICROWIN__ - // TODO: copy alpha channel data if any + // handle alpha channel, if any + if (HasAlpha()) + ret.UseAlpha(); // copy bitmap data MemoryHDC dcSrc, @@ -1068,17 +1117,28 @@ wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect) const // wxBitmap accessors // ---------------------------------------------------------------------------- +#if wxUSE_PALETTE wxPalette* wxBitmap::GetPalette() const { return GetBitmapData() ? &GetBitmapData()->m_bitmapPalette : (wxPalette *) NULL; } +#endif 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 @@ -1097,6 +1157,12 @@ int wxBitmap::GetQuality() const #endif // WXWIN_COMPATIBILITY_2_4 +void wxBitmap::UseAlpha() +{ + if ( GetBitmapData() ) + GetBitmapData()->m_hasAlpha = true; +} + bool wxBitmap::HasAlpha() const { return GetBitmapData() && GetBitmapData()->m_hasAlpha; @@ -1120,7 +1186,7 @@ void wxBitmap::SetSelectedInto(wxDC *dc) void wxBitmap::SetPalette(const wxPalette& palette) { - EnsureHasData(); + AllocExclusive(); GetBitmapData()->m_bitmapPalette = palette; } @@ -1129,22 +1195,11 @@ void wxBitmap::SetPalette(const wxPalette& palette) void wxBitmap::SetMask(wxMask *mask) { - EnsureHasData(); + AllocExclusive(); GetBitmapData()->SetMask(mask); } -#if WXWIN_COMPATIBILITY_2 - -void wxBitmap::SetOk(bool isOk) -{ - EnsureHasData(); - - GetBitmapData()->m_ok = isOk; -} - -#endif // WXWIN_COMPATIBILITY_2 - #if WXWIN_COMPATIBILITY_2_4 void wxBitmap::SetQuality(int WXUNUSED(quality)) @@ -1157,105 +1212,113 @@ void wxBitmap::SetQuality(int WXUNUSED(quality)) // raw bitmap access support // ---------------------------------------------------------------------------- -bool wxBitmap::GetRawData(wxRawBitmapData *data) +#ifdef wxHAVE_RAW_BITMAP +void *wxBitmap::GetRawData(wxPixelDataBase& data, int bpp) { - wxCHECK_MSG( data, FALSE, _T("NULL pointer in wxBitmap::GetRawData") ); - +#if wxUSE_WXDIB if ( !Ok() ) { // no bitmap, no data (raw or otherwise) - return FALSE; + return NULL; + } + + // if we're already a DIB we can access our data directly, but if not we + // need to convert this DDB to a DIB section and use it for raw access and + // then convert it back + HBITMAP hDIB; + if ( !GetBitmapData()->m_isDIB ) + { + wxCHECK_MSG( !GetBitmapData()->m_dib, NULL, + _T("GetRawData() may be called only once") ); + + wxDIB *dib = new wxDIB(*this); + if ( !dib->IsOk() ) + { + delete dib; + + return NULL; + } + + // we'll free it in UngetRawData() + GetBitmapData()->m_dib = dib; + + hDIB = dib->GetHandle(); + } + else // we're a DIB + { + hDIB = GetHbitmap(); } - // we only support raw access to the DIBs, so check if we have one DIBSECTION ds; - if ( !::GetObject(GetHbitmap(), sizeof(ds), &ds) ) + if ( ::GetObject(hDIB, sizeof(ds), &ds) != sizeof(DIBSECTION) ) { - return FALSE; + wxFAIL_MSG( _T("failed to get DIBSECTION from a DIB?") ); + + return NULL; } - // ok, store the relevant info in wxRawBitmapData + // check that the bitmap is in correct format + if ( ds.dsBm.bmBitsPixel != bpp ) + { + wxFAIL_MSG( _T("incorrect bitmap type in wxBitmap::GetRawData()") ); + + return NULL; + } + + // ok, store the relevant info in wxPixelDataBase const LONG h = ds.dsBm.bmHeight; - data->m_width = ds.dsBm.bmWidth; - data->m_height = h; - data->m_bypp = ds.dsBm.bmBitsPixel / 8; + data.m_width = ds.dsBm.bmWidth; + data.m_height = h; // remember that DIBs are stored in top to bottom order! - const LONG bytesPerRow = ds.dsBm.bmWidthBytes; - data->m_stride = -bytesPerRow; - data->m_pixels = (unsigned char *)ds.dsBm.bmBits; + // (We can't just use ds.dsBm.bmWidthBytes here, because it isn't always a + // multiple of 2, as required by the documentation. So we use the official + // formula, which we already use elsewhere.) + const LONG bytesPerRow = + wxDIB::GetLineSize(ds.dsBm.bmWidth, ds.dsBm.bmBitsPixel); + data.m_stride = -bytesPerRow; + + char *bits = (char *)ds.dsBm.bmBits; if ( h > 1 ) { - data->m_pixels += (h - 1)*bytesPerRow; + bits += (h - 1)*bytesPerRow; } - return TRUE; + return bits; +#else + return NULL; +#endif } -// ---------------------------------------------------------------------------- -// TODO: to be replaced by something better -// ---------------------------------------------------------------------------- - -// Creates a bitmap that matches the device context, from -// an arbitray bitmap. At present, the original bitmap must have an -// associated palette. TODO: use a default palette if no palette exists. -// Contributed by Frederic Villeneuve -wxBitmap wxBitmap::GetBitmapForDC(wxDC& dc) const +void wxBitmap::UngetRawData(wxPixelDataBase& dataBase) { -#ifdef __WXMICROWIN__ - return *this; -#else - wxMemoryDC memDC; - wxBitmap tmpBitmap(GetWidth(), GetHeight(), dc.GetDepth()); - HPALETTE hPal = (HPALETTE) NULL; - LPBITMAPINFO lpDib; - void *lpBits = (void*) NULL; +#if wxUSE_WXDIB + if ( !Ok() ) + return; -#if wxUSE_PALETTE - if( GetPalette() && GetPalette()->Ok() ) - { - tmpBitmap.SetPalette(*GetPalette()); - memDC.SelectObject(tmpBitmap); - memDC.SetPalette(*GetPalette()); - hPal = (HPALETTE)GetPalette()->GetHPALETTE(); - } - else + if ( !&dataBase ) { - hPal = (HPALETTE) ::GetStockObject(DEFAULT_PALETTE); - wxPalette palette; - palette.SetHPALETTE( (WXHPALETTE)hPal ); - tmpBitmap.SetPalette( palette ); - memDC.SelectObject(tmpBitmap); - memDC.SetPalette( palette ); + // invalid data, don't crash -- but don't assert neither as we're + // called automatically from wxPixelDataBase dtor and so there is no + // way to prevent this from happening + return; } -#else // !wxUSE_PALETTE - hPal = (HPALETTE) ::GetStockObject(DEFAULT_PALETTE); -#endif // wxUSE_PALETTE/!wxUSE_PALETTE - // set the height negative because in a DIB the order of the lines is - // reversed - if ( !wxCreateDIB(GetWidth(), -GetHeight(), GetDepth(), hPal, &lpDib) ) + // if we're a DDB we need to convert DIB back to DDB now to make the + // changes made via raw bitmap access effective + if ( !GetBitmapData()->m_isDIB ) { - return wxNullBitmap; - } - - lpBits = malloc(lpDib->bmiHeader.biSizeImage); - - ::GetBitmapBits(GetHbitmap(), lpDib->bmiHeader.biSizeImage, lpBits); + wxDIB *dib = GetBitmapData()->m_dib; + GetBitmapData()->m_dib = NULL; - ::SetDIBitsToDevice(GetHdcOf(memDC), 0, 0, - GetWidth(), GetHeight(), - 0, 0, 0, GetHeight(), - lpBits, lpDib, DIB_RGB_COLORS); + // TODO: convert - free(lpBits); - - wxFreeDIB(lpDib); - - return tmpBitmap; -#endif + delete dib; + } +#endif // wxUSE_WXDIB } +#endif // #ifdef wxHAVE_RAW_BITMAP // ---------------------------------------------------------------------------- // wxMask @@ -1299,7 +1362,7 @@ wxMask::~wxMask() bool wxMask::Create(const wxBitmap& bitmap) { #ifndef __WXMICROWIN__ - wxCHECK_MSG( bitmap.Ok() && bitmap.GetDepth() == 1, FALSE, + wxCHECK_MSG( bitmap.Ok() && bitmap.GetDepth() == 1, false, _T("can't create mask from invalid or not monochrome bitmap") ); if ( m_maskBitmap ) @@ -1322,9 +1385,10 @@ bool wxMask::Create(const wxBitmap& bitmap) DeleteDC(srcDC); SelectObject(destDC, 0); DeleteDC(destDC); - return TRUE; + return true; #else - return FALSE; + wxUnusedVar(bitmap); + return false; #endif } @@ -1350,7 +1414,7 @@ bool wxMask::Create(const wxBitmap& bitmap, int paletteIndex) } #endif // wxUSE_PALETTE - return FALSE; + return false; } // Create a mask from a bitmap and a colour indicating @@ -1358,7 +1422,7 @@ bool wxMask::Create(const wxBitmap& bitmap, int paletteIndex) bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour) { #ifndef __WXMICROWIN__ - wxCHECK_MSG( bitmap.Ok(), FALSE, _T("invalid bitmap in wxMask::Create") ); + wxCHECK_MSG( bitmap.Ok(), false, _T("invalid bitmap in wxMask::Create") ); if ( m_maskBitmap ) { @@ -1381,7 +1445,7 @@ bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour) wxLogLastError(wxT("CreateCompatibleDC")); } - bool ok = TRUE; + bool ok = true; // SelectObject() will fail wxASSERT_MSG( !bitmap.GetSelectedInto(), @@ -1392,7 +1456,7 @@ bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour) { wxLogLastError(wxT("SelectObject")); - ok = FALSE; + ok = false; } HGDIOBJ hbmpDstOld = ::SelectObject(destDC, (HBITMAP)m_maskBitmap); @@ -1400,7 +1464,7 @@ bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour) { wxLogLastError(wxT("SelectObject")); - ok = FALSE; + ok = false; } if ( ok ) @@ -1419,7 +1483,9 @@ bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour) return ok; #else // __WXMICROWIN__ - return FALSE; + wxUnusedVar(bitmap); + wxUnusedVar(colour); + return false; #endif // __WXMICROWIN__/!__WXMICROWIN__ } @@ -1428,13 +1494,13 @@ bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour) // ---------------------------------------------------------------------------- bool wxBitmapHandler::Create(wxGDIImage *image, - void *data, + const void* data, long flags, int width, int height, int depth) { wxBitmap *bitmap = wxDynamicCast(image, wxBitmap); - return bitmap ? Create(bitmap, data, flags, width, height, depth) : FALSE; + return bitmap && Create(bitmap, data, flags, width, height, depth); } bool wxBitmapHandler::Load(wxGDIImage *image, @@ -1444,7 +1510,7 @@ bool wxBitmapHandler::Load(wxGDIImage *image, { wxBitmap *bitmap = wxDynamicCast(image, wxBitmap); - return bitmap ? LoadFile(bitmap, name, flags, width, height) : FALSE; + return bitmap && LoadFile(bitmap, name, flags, width, height); } bool wxBitmapHandler::Save(wxGDIImage *image, @@ -1453,17 +1519,17 @@ bool wxBitmapHandler::Save(wxGDIImage *image, { wxBitmap *bitmap = wxDynamicCast(image, wxBitmap); - return bitmap ? SaveFile(bitmap, name, type) : FALSE; + return bitmap && SaveFile(bitmap, name, type); } bool wxBitmapHandler::Create(wxBitmap *WXUNUSED(bitmap), - void *WXUNUSED(data), + const void* WXUNUSED(data), long WXUNUSED(type), int WXUNUSED(width), int WXUNUSED(height), int WXUNUSED(depth)) { - return FALSE; + return false; } bool wxBitmapHandler::LoadFile(wxBitmap *WXUNUSED(bitmap), @@ -1472,7 +1538,7 @@ bool wxBitmapHandler::LoadFile(wxBitmap *WXUNUSED(bitmap), int WXUNUSED(desiredWidth), int WXUNUSED(desiredHeight)) { - return FALSE; + return false; } bool wxBitmapHandler::SaveFile(wxBitmap *WXUNUSED(bitmap), @@ -1480,7 +1546,7 @@ bool wxBitmapHandler::SaveFile(wxBitmap *WXUNUSED(bitmap), int WXUNUSED(type), const wxPalette *WXUNUSED(palette)) { - return FALSE; + return false; } // ---------------------------------------------------------------------------- @@ -1492,14 +1558,11 @@ bool wxCreateDIB(long xSize, long ySize, long bitsPerPixel, HPALETTE hPal, LPBITMAPINFO* lpDIBHeader) { unsigned long i, headerSize; - LPBITMAPINFO lpDIBheader = NULL; - LPPALETTEENTRY lpPe = NULL; - // Allocate space for a DIB header headerSize = (sizeof(BITMAPINFOHEADER) + (256 * sizeof(PALETTEENTRY))); - lpDIBheader = (BITMAPINFO *) malloc(headerSize); - lpPe = (PALETTEENTRY *)((BYTE*)lpDIBheader + sizeof(BITMAPINFOHEADER)); + LPBITMAPINFO lpDIBheader = (BITMAPINFO *) malloc(headerSize); + LPPALETTEENTRY lpPe = (PALETTEENTRY *)((BYTE*)lpDIBheader + sizeof(BITMAPINFOHEADER)); GetPaletteEntries(hPal, 0, 256, lpPe); @@ -1514,7 +1577,7 @@ 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; @@ -1528,7 +1591,7 @@ bool wxCreateDIB(long xSize, long ySize, long bitsPerPixel, *lpDIBHeader = lpDIBheader; - return TRUE; + return true; } void wxFreeDIB(LPBITMAPINFO lpDIBHeader) @@ -1554,7 +1617,33 @@ 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, @@ -1563,6 +1652,7 @@ HICON wxBitmapToIconOrCursor(const wxBitmap& bmp, } ICONINFO iconInfo; + wxZeroMemory(iconInfo); iconInfo.fIcon = iconWanted; // do we want an icon or a cursor? if ( !iconWanted ) { @@ -1590,7 +1680,7 @@ 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; @@ -1604,12 +1694,12 @@ HICON wxBitmapToIconOrCursor(const wxBitmap& bmp, HICON wxBitmapToHICON(const wxBitmap& bmp) { - return wxBitmapToIconOrCursor(bmp, TRUE, 0, 0); + return wxBitmapToIconOrCursor(bmp, true, 0, 0); } HCURSOR wxBitmapToHCURSOR(const wxBitmap& bmp, int hotSpotX, int hotSpotY) { - return (HCURSOR)wxBitmapToIconOrCursor(bmp, FALSE, hotSpotX, hotSpotY); + return (HCURSOR)wxBitmapToIconOrCursor(bmp, false, hotSpotX, hotSpotY); } HBITMAP wxInvertMask(HBITMAP hbmpMask, int w, int h) @@ -1639,8 +1729,8 @@ HBITMAP wxInvertMask(HBITMAP hbmpMask, int w, int h) wxLogLastError(wxT("CreateBitmap")); } - ::SelectObject(hdcSrc, hbmpMask); - ::SelectObject(hdcDst, hbmpInvMask); + HGDIOBJ srcTmp = ::SelectObject(hdcSrc, hbmpMask); + HGDIOBJ dstTmp = ::SelectObject(hdcDst, hbmpInvMask); if ( !::BitBlt(hdcDst, 0, 0, w, h, hdcSrc, 0, 0, NOTSRCCOPY) ) @@ -1648,6 +1738,10 @@ HBITMAP wxInvertMask(HBITMAP hbmpMask, int w, int h) wxLogLastError(wxT("BitBlt")); } + // Deselect objects + SelectObject(hdcSrc,srcTmp); + SelectObject(hdcDst,dstTmp); + ::DeleteDC(hdcSrc); ::DeleteDC(hdcDst);