X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/0becd470109886a71b5fb51c60f9842318eaeca9..4a2d030adfa836f6ada1830c9057170d053bcc64:/src/msw/bitmap.cpp?ds=sidebyside diff --git a/src/msw/bitmap.cpp b/src/msw/bitmap.cpp index fceabb32c4..61ad4d25f8 100644 --- a/src/msw/bitmap.cpp +++ b/src/msw/bitmap.cpp @@ -1,12 +1,11 @@ //////////////////////////////////////////////////////////////////////////// -// Name: bitmap.cpp +// Name: src/msw/bitmap.cpp // Purpose: wxBitmap // Author: Julian Smart // Modified by: // Created: 04/01/98 -// RCS-ID: $Id$ -// Copyright: (c) Julian Smart and Markus Holzem -// Licence: wxWindows license +// Copyright: (c) Julian Smart +// Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// // ============================================================================ @@ -17,10 +16,6 @@ // headers // ---------------------------------------------------------------------------- -#ifdef __GNUG__ - #pragma implementation "bitmap.h" -#endif - // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" @@ -28,6 +23,8 @@ #pragma hdrstop #endif +#include "wx/bitmap.h" + #ifndef WX_PRECOMP #include @@ -36,27 +33,99 @@ #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 "device.h" - +#include "wx/scopedptr.h" #include "wx/msw/private.h" -#include "wx/log.h" +#include "wx/msw/dc.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" +#ifdef wxHAS_RAW_BITMAP + #include "wx/rawbmp.h" +#endif // missing from mingw32 header #ifndef CLR_INVALID #define CLR_INVALID ((COLORREF)-1) #endif // no CLR_INVALID +// ---------------------------------------------------------------------------- +// wxBitmapRefData +// ---------------------------------------------------------------------------- + +class WXDLLEXPORT wxBitmapRefData : public wxGDIImageRefData +{ +public: + wxBitmapRefData() { Init(); } + wxBitmapRefData(const wxBitmapRefData& data); + virtual ~wxBitmapRefData() { Free(); } + + virtual void Free(); + + void CopyFromDIB(const wxDIB& dib); + + // set the mask object to use as the mask, we take ownership of it + void SetMask(wxMask *mask) + { + delete m_bitmapMask; + m_bitmapMask = mask; + } + + // set the HBITMAP to use as the mask + void SetMask(HBITMAP hbmpMask) + { + SetMask(new wxMask((WXHBITMAP)hbmpMask)); + } + + // return the mask + wxMask *GetMask() const { return m_bitmapMask; } + +public: +#if wxUSE_PALETTE + wxPalette m_bitmapPalette; +#endif // wxUSE_PALETTE + + // MSW-specific + // ------------ + +#if wxDEBUG_LEVEL + // this field is solely for error checking: we detect selecting a bitmap + // into more than one DC at once or deleting a bitmap still selected into a + // DC (both are serious programming errors under Windows) + wxDC *m_selectedInto; +#endif // wxDEBUG_LEVEL + +#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: + void Init(); + + // optional mask for transparent drawing + wxMask *m_bitmapMask; + + + // not implemented + wxBitmapRefData& operator=(const wxBitmapRefData&); +}; + // ---------------------------------------------------------------------------- // macros // ---------------------------------------------------------------------------- @@ -70,20 +139,92 @@ IMPLEMENT_DYNAMIC_CLASS(wxBitmapHandler, wxObject) // implementation // ============================================================================ +// ---------------------------------------------------------------------------- +// helper functions +// ---------------------------------------------------------------------------- + +// decide whether we should create a DIB or a DDB for the given parameters +// +// 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 // ---------------------------------------------------------------------------- -wxBitmapRefData::wxBitmapRefData() +void wxBitmapRefData::Init() { - m_quality = 0; +#if wxDEBUG_LEVEL m_selectedInto = NULL; - m_numColors = 0; +#endif m_bitmapMask = NULL; + m_hBitmap = (WXHBITMAP) NULL; -#if wxUSE_DIB_FOR_BITMAP - m_hFileMap = 0; +#if wxUSE_WXDIB + m_dib = NULL; #endif + + m_isDIB = + m_hasAlpha = false; +} + +wxBitmapRefData::wxBitmapRefData(const wxBitmapRefData& data) + : wxGDIImageRefData(data) +{ + Init(); + + // (deep) copy the mask if present + if (data.m_bitmapMask) + m_bitmapMask = new wxMask(*data.m_bitmapMask); + + wxASSERT_MSG( !data.m_dib, + wxT("can't copy bitmap locked for raw access!") ); + + m_hasAlpha = data.m_hasAlpha; + +#if wxUSE_WXDIB + // copy the other bitmap + if ( data.m_hBitmap ) + { + wxDIB dib((HBITMAP)(data.m_hBitmap)); + CopyFromDIB(dib); + } +#endif // wxUSE_WXDIB } void wxBitmapRefData::Free() @@ -91,45 +232,68 @@ void wxBitmapRefData::Free() wxASSERT_MSG( !m_selectedInto, wxT("deleting bitmap still selected into wxMemoryDC") ); +#if wxUSE_WXDIB + wxASSERT_MSG( !m_dib, wxT("forgot to call wxBitmap::UngetRawData()!") ); +#endif + if ( m_hBitmap) { - // printf("About to delete bitmap %d\n", (int) (HBITMAP) m_hBitmap); -#if 1 if ( !::DeleteObject((HBITMAP)m_hBitmap) ) { wxLogLastError(wxT("DeleteObject(hbitmap)")); } -#endif } -#if wxUSE_DIB_FOR_BITMAP - if(m_hFileMap) - { - ::CloseHandle((void*)m_hFileMap); - m_hFileMap = 0; - } -#endif + wxDELETE(m_bitmapMask); +} - delete m_bitmapMask; - m_bitmapMask = NULL; +void wxBitmapRefData::CopyFromDIB(const wxDIB& dib) +{ + wxCHECK_RET( !IsOk(), "bitmap already initialized" ); + wxCHECK_RET( dib.IsOk(), wxT("invalid DIB in CopyFromDIB") ); + +#ifdef SOMETIMES_USE_DIB + HBITMAP hbitmap = dib.CreateDDB(); + if ( !hbitmap ) + return; + m_isDIB = false; +#else // ALWAYS_USE_DIB + HBITMAP hbitmap = const_cast(dib).Detach(); + m_isDIB = true; +#endif // SOMETIMES_USE_DIB/ALWAYS_USE_DIB + + m_width = dib.GetWidth(); + m_height = dib.GetHeight(); + m_depth = dib.GetDepth(); + + m_hBitmap = (WXHBITMAP)hbitmap; + +#if wxUSE_PALETTE + wxPalette *palette = dib.CreatePalette(); + if ( palette ) + m_bitmapPalette = *palette; + delete palette; +#endif // wxUSE_PALETTE } // ---------------------------------------------------------------------------- // 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; } -#ifdef __WIN32__ +wxGDIRefData *wxBitmap::CloneGDIRefData(const wxGDIRefData *data) const +{ + return new wxBitmapRefData(*static_cast(data)); +} -bool wxBitmap::CopyFromIconOrCursor(const wxGDIImage& icon) +bool wxBitmap::CopyFromIconOrCursor(const wxGDIImage& icon, + wxBitmapTransparency transp) { -#ifndef __WXMICROWIN__ +#if !defined(__WXMICROWIN__) && !defined(__WXWINCE__) // it may be either HICON or HCURSOR HICON hicon = (HICON)icon.GetHandle(); @@ -138,7 +302,7 @@ bool wxBitmap::CopyFromIconOrCursor(const wxGDIImage& icon) { wxLogLastError(wxT("GetIconInfo")); - return FALSE; + return false; } wxBitmapRefData *refData = new wxBitmapRefData; @@ -153,95 +317,132 @@ 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->m_bitmapMask = new wxMask((WXHBITMAP) - wxInvertMask(iconInfo.hbmMask, w, h)); + switch ( transp ) + { + default: + wxFAIL_MSG( wxT("unknown wxBitmapTransparency value") ); + + case wxBitmapTransparency_None: + // nothing to do, refData->m_hasAlpha is false by default + break; + + case wxBitmapTransparency_Auto: +#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(bm), &bm) && + (bm.bmBitsPixel == 32) ) + { + wxDIB dib(iconInfo.hbmColor); + if (dib.IsOk()) + { + unsigned char* const pixels = dib.GetData(); + int idx; + for ( 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 stop checking + refData->m_hasAlpha = true; + 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(); + } + } + } + } + break; +#endif // wxUSE_WXDIB + + case wxBitmapTransparency_Always: + refData->m_hasAlpha = true; + break; + } + 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; +#else // __WXMICROWIN__ || __WXWINCE__ + wxUnusedVar(icon); + wxUnusedVar(transp); - return TRUE; -#else - return FALSE; -#endif + return false; +#endif // !__WXWINCE__/__WXWINCE__ } -#endif // Win32 - -bool wxBitmap::CopyFromCursor(const wxCursor& cursor) +bool wxBitmap::CopyFromCursor(const wxCursor& cursor, wxBitmapTransparency transp) { UnRef(); - if ( !cursor.Ok() ) - return FALSE; + if ( !cursor.IsOk() ) + return false; -#ifdef __WIN16__ - wxFAIL_MSG( _T("don't know how to convert cursor to bitmap") ); - - return FALSE; -#else - return CopyFromIconOrCursor(cursor); -#endif // Win16 + return CopyFromIconOrCursor(cursor, transp); } -bool wxBitmap::CopyFromIcon(const wxIcon& icon) +bool wxBitmap::CopyFromIcon(const wxIcon& icon, wxBitmapTransparency transp) { 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)); + if ( !icon.IsOk() ) + 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(); + return CopyFromIconOrCursor(icon, transp); +} - refData->m_hBitmap = (WXHBITMAP)hbitmap; +#ifndef NEVER_USE_DIB -#if WXWIN_COMPATIBILITY_2 - refData->m_ok = TRUE; -#endif // WXWIN_COMPATIBILITY_2 +bool wxBitmap::CopyFromDIB(const wxDIB& dib) +{ + wxScopedPtr newData(new wxBitmapRefData); + newData->CopyFromDIB(dib); + if ( !newData->IsOk() ) + return false; - return TRUE; -#else // Win32 - return CopyFromIconOrCursor(icon); -#endif // Win16/Win32 + UnRef(); + m_refData = newData.release(); + 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; @@ -249,15 +450,13 @@ wxBitmap::wxBitmap(const char bits[], int width, int height, int depth) refData->m_width = width; refData->m_height = height; refData->m_depth = depth; - refData->m_numColors = 0; - refData->m_selectedInto = NULL; char *data; if ( depth == 1 ) { // 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 ); @@ -275,10 +474,10 @@ 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 ) @@ -288,7 +487,7 @@ 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); @@ -306,66 +505,72 @@ wxBitmap::wxBitmap(const char bits[], int width, int height, int depth) #endif } -// Create from XPM data -bool wxBitmap::CreateFromXpm(const char **data) +wxBitmap::wxBitmap(int w, int h, const wxDC& dc) { -#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 + (void)Create(w, h, dc); } -wxBitmap::wxBitmap(int w, int h, int d) +wxBitmap::wxBitmap(const void* data, wxBitmapType type, int width, int height, int depth) { - Init(); - - (void)Create(w, h, d); + (void)Create(data, type, width, height, depth); } -wxBitmap::wxBitmap(void *data, long type, int width, int height, int depth) +wxBitmap::wxBitmap(const wxString& filename, wxBitmapType type) { - Init(); + LoadFile(filename, type); +} - (void)Create(data, type, width, height, depth); +bool wxBitmap::Create(int width, int height, int depth) +{ + return DoCreate(width, height, depth, 0); } -wxBitmap::wxBitmap(const wxString& filename, wxBitmapType type) +bool wxBitmap::Create(int width, int height, const wxDC& dc) { - Init(); + wxCHECK_MSG( dc.IsOk(), false, wxT("invalid HDC in wxBitmap::Create()") ); - LoadFile(filename, (int)type); + const wxMSWDCImpl *impl = wxDynamicCast( dc.GetImpl(), wxMSWDCImpl ); + + if (impl) + return DoCreate(width, height, -1, impl->GetHDC()); + else + return false; } -bool wxBitmap::Create(int w, int h, int d) +bool wxBitmap::DoCreate(int w, int h, int d, WXHDC hdc) { UnRef(); m_refData = new wxBitmapRefData; -#if wxUSE_DIB_FOR_BITMAP - if ( w && h && d >= 16 ) + GetBitmapData()->m_width = w; + GetBitmapData()->m_height = h; + + HBITMAP hbmp wxDUMMY_INITIALIZE(0); + +#ifndef NEVER_USE_DIB + if ( wxShouldCreateDIB(w, h, d, hdc) ) { - if ( !CreateDIB(w, h, d) ) - return FALSE; + if ( d == -1 ) + { + // create DIBs without alpha channel by default + d = 24; + } + + wxDIB dib(w, h, d); + if ( !dib.IsOk() ) + return false; + + // don't delete the DIB section in dib object dtor + hbmp = dib.Detach(); + + GetBitmapData()->m_isDIB = true; + GetBitmapData()->m_depth = d; } - else -#endif // wxUSE_DIB_FOR_BITMAP + else // create a DDB +#endif // NEVER_USE_DIB { - GetBitmapData()->m_width = w; - GetBitmapData()->m_height = h; - GetBitmapData()->m_depth = d; - - HBITMAP hbmp; +#ifndef ALWAYS_USE_DIB #ifndef __WXMICROWIN__ if ( d > 0 ) { @@ -374,8 +579,10 @@ bool wxBitmap::Create(int w, int h, int d) { wxLogLastError(wxT("CreateBitmap")); } + + GetBitmapData()->m_depth = d; } - else + else // d == 0, create bitmap compatible with the screen #endif // !__WXMICROWIN__ { ScreenHDC dc; @@ -387,100 +594,29 @@ bool wxBitmap::Create(int w, int h, int d) GetBitmapData()->m_depth = wxDisplayDepth(); } - - SetHBITMAP((WXHBITMAP)hbmp); - } - -#if WXWIN_COMPATIBILITY_2 - GetBitmapData()->m_ok = hbmp != 0; -#endif // WXWIN_COMPATIBILITY_2 - - return Ok(); -} - -#if wxUSE_DIB_FOR_BITMAP - -void *wxBitmap::CreateDIB(int width, int height, int depth) -{ - void *dibBits; - const int infosize = sizeof(BITMAPINFOHEADER); - - BITMAPINFO *info = (BITMAPINFO *)malloc(infosize); - if ( info ) - { - memset(info, 0, infosize); - - info->bmiHeader.biSize = infosize; - info->bmiHeader.biWidth = width; - info->bmiHeader.biHeight = height; - info->bmiHeader.biPlanes = 1; - info->bmiHeader.biBitCount = depth; - info->bmiHeader.biCompression = BI_RGB; - info->bmiHeader.biSizeImage = - (((width * (depth/8)) + sizeof(DWORD) - 1) / - sizeof(DWORD) * sizeof(DWORD)) * height; - info->bmiHeader.biXPelsPerMeter = 0; - info->bmiHeader.biYPelsPerMeter = 0; - info->bmiHeader.biClrUsed = 0; - info->bmiHeader.biClrImportant = 0; - GetBitmapData()->m_hFileMap = - (WXHANDLE)::CreateFileMapping - ( - INVALID_HANDLE_VALUE, - 0, - PAGE_READWRITE | SEC_COMMIT, - 0, - info->bmiHeader.biSizeImage, - 0 - ); - - // No need to report an error here. If it fails, we just won't use a - // file mapping and CreateDIBSection will just allocate memory for us. - GetBitmapData()->m_handle = - (WXHANDLE)::CreateDIBSection - ( - 0, - info, - DIB_RGB_COLORS, - &dibBits, - (HANDLE)GetBitmapData()->m_hFileMap, - 0 - ); - - if ( !GetBitmapData()->m_handle ) - wxLogLastError(wxT("CreateDIBSection")); - - SetWidth(width); - SetHeight(height); - SetDepth(depth); - - free(info); +#endif // !ALWAYS_USE_DIB } - else - { - wxFAIL_MSG( wxT("could not allocate memory for DIB header") ); - dibBits = NULL; - } + SetHBITMAP((WXHBITMAP)hbmp); - return dibBits; + return IsOk(); } -#endif // wxUSE_DIB_FOR_BITMAP +#if wxUSE_IMAGE // ---------------------------------------------------------------------------- -// wxImage to/from conversions +// wxImage to/from conversions for Microwin // ---------------------------------------------------------------------------- -#if wxUSE_IMAGE - -bool wxBitmap::CreateFromImage( const wxImage& image, int depth ) -{ +// Microwin versions are so different from normal ones that it really doesn't +// make sense to use #ifdefs inside the function bodies #ifdef __WXMICROWIN__ - // Set this to 1 to experiment with mask code, - // which currently doesn't work -#define USE_MASKS 0 +bool wxBitmap::CreateFromImage(const wxImage& image, int depth, const wxDC& dc) +{ + // Set this to 1 to experiment with mask code, + // which currently doesn't work + #define USE_MASKS 0 m_refData = new wxBitmapRefData(); @@ -503,7 +639,7 @@ bool wxBitmap::CreateFromImage( const wxImage& image, int depth ) if (hBitmap == NULL) { ::ReleaseDC(NULL, hScreenDC); - return FALSE; + return false; } HDC hMemDC = ::CreateCompatibleDC(hScreenDC); @@ -529,7 +665,7 @@ bool wxBitmap::CreateFromImage( const wxImage& image, int depth ) if (!hMaskBitmap) { - hasMask = FALSE; + hasMask = false; } else { @@ -540,7 +676,7 @@ bool wxBitmap::CreateFromImage( const wxImage& image, int depth ) hOldMaskBitmap = ::SelectObject( hMaskDC, hMaskBitmap); } #else - hasMask = FALSE; + hasMask = false; #endif } @@ -574,7 +710,7 @@ bool wxBitmap::CreateFromImage( const wxImage& image, int depth ) ::SelectObject(hMaskDC, hOldMaskBitmap); ::DeleteDC(hMaskDC); - ((wxBitmapRefData*)m_refData)->m_bitmapMask = new wxMask((WXHBITMAP) hMaskBitmap); + ((wxBitmapRefData*)m_refData)->SetMask(hMaskBitmap); } SetWidth(image.GetWidth()); @@ -587,296 +723,17 @@ bool wxBitmap::CreateFromImage( const wxImage& image, int depth ) SetPalette(image.GetPalette()); #endif // wxUSE_PALETTE -#if WXWIN_COMPATIBILITY_2 - // check the wxBitmap object - GetBitmapData()->SetOk(); -#endif // WXWIN_COMPATIBILITY_2 - - return TRUE; - -#else // !__WXMICROWIN__ - wxCHECK_MSG( image.Ok(), FALSE, wxT("invalid image") ) - - m_refData = new wxBitmapRefData(); - -#if wxUSE_DIB_FOR_BITMAP - int h = image.GetHeight(); - int w = image.GetWidth(); - unsigned char *dibBits = (unsigned char*)CreateDIB(w, h, 24); - if ( !dibBits ) - return FALSE; - - // DIBs are stored in bottom to top order so we need to copy bits line by - // line and starting from the end - const int srcBytesPerLine = w * 3; - const int dstBytesPerLine = (srcBytesPerLine + sizeof(DWORD) - 1) / - sizeof(DWORD) * sizeof(DWORD); - const unsigned char *src = image.GetData() + ((h - 1) * srcBytesPerLine); - for ( int i = 0; i < h; i++ ) - { - // copy one DIB line - int x = w; - const unsigned char *rgbBits = src; - while ( x-- ) - { - // also, the order of RGB is inversed for DIBs - *dibBits++ = rgbBits[2]; - *dibBits++ = rgbBits[1]; - *dibBits++ = rgbBits[0]; - - rgbBits += 3; - } - - // pass to the next line - src -= srcBytesPerLine; - dibBits += dstBytesPerLine - srcBytesPerLine; - } - - if ( image.HasMask() ) - { - SetMask(new wxMask(*this, wxColour(image.GetMaskRed(), - image.GetMaskGreen(), - image.GetMaskBlue()))); - } -#else // wxUSE_DIB_FOR_BITMAP - // sizeLimit is the MS upper limit for the DIB size -#ifdef WIN32 - int sizeLimit = 1024*768*3; -#else - int sizeLimit = 0x7fff; -#endif - - // width and height of the device-dependent bitmap - int width = image.GetWidth(); - int bmpHeight = image.GetHeight(); - - // calc the number of bytes per scanline and padding - int bytePerLine = width*3; - int sizeDWORD = sizeof( DWORD ); - int lineBoundary = bytePerLine % sizeDWORD; - int padding = 0; - if( lineBoundary > 0 ) - { - padding = sizeDWORD - lineBoundary; - bytePerLine += padding; - } - // calc the number of DIBs and heights of DIBs - int numDIB = 1; - int hRemain = 0; - int height = sizeLimit/bytePerLine; - if( height >= bmpHeight ) - height = bmpHeight; - else - { - numDIB = bmpHeight / height; - hRemain = bmpHeight % height; - if( hRemain >0 ) numDIB++; - } - - // set bitmap parameters - wxCHECK_MSG( image.Ok(), FALSE, wxT("invalid image") ); - SetWidth( width ); - SetHeight( bmpHeight ); - if (depth == -1) depth = wxDisplayDepth(); - SetDepth( depth ); - -#if wxUSE_PALETTE - // Copy the palette from the source image - SetPalette(image.GetPalette()); -#endif // wxUSE_PALETTE - - // create a DIB header - int headersize = sizeof(BITMAPINFOHEADER); - BITMAPINFO *lpDIBh = (BITMAPINFO *) malloc( headersize ); - wxCHECK_MSG( lpDIBh, FALSE, wxT("could not allocate memory for DIB header") ); - // Fill in the DIB header - lpDIBh->bmiHeader.biSize = headersize; - lpDIBh->bmiHeader.biWidth = (DWORD)width; - lpDIBh->bmiHeader.biHeight = (DWORD)(-height); - lpDIBh->bmiHeader.biSizeImage = bytePerLine*height; - // the general formula for biSizeImage: - // ( ( ( ((DWORD)width*24) +31 ) & ~31 ) >> 3 ) * 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 ) - { - wxFAIL_MSG( wxT("could not allocate memory for DIB") ); - free( lpDIBh ); - return FALSE; - } - - // create and set the device-dependent bitmap - HDC hdc = ::GetDC(NULL); - HDC memdc = ::CreateCompatibleDC( hdc ); - HBITMAP hbitmap; - hbitmap = ::CreateCompatibleBitmap( hdc, width, bmpHeight ); - ::SelectObject( memdc, hbitmap); - -#if wxUSE_PALETTE - HPALETTE hOldPalette = 0; - if (image.GetPalette().Ok()) - { - hOldPalette = ::SelectPalette(memdc, (HPALETTE) image.GetPalette().GetHPALETTE(), FALSE); - ::RealizePalette(memdc); - } -#endif // wxUSE_PALETTE - - // copy image data into DIB data and then into DDB (in a loop) - unsigned char *data = image.GetData(); - int i, j, n; - int origin = 0; - unsigned char *ptdata = data; - unsigned char *ptbits; - - for( n=0; n 1 && n == numDIB-1 && hRemain > 0 ) - { - // redefine height and size of the (possibly) last smaller DIB - // memory is not reallocated - height = hRemain; - lpDIBh->bmiHeader.biHeight = (DWORD)(-height); - lpDIBh->bmiHeader.biSizeImage = bytePerLine*height; - } - ptbits = lpBits; - - for( j=0; jbmiHeader), CBM_INIT, lpBits, lpDIBh, DIB_RGB_COLORS ); - // The above line is equivalent to the following two lines. - // hbitmap = ::CreateCompatibleBitmap( hdc, width, height ); - // ::SetDIBits( hdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS); - // or the following lines - // hbitmap = ::CreateCompatibleBitmap( hdc, width, height ); - // HDC memdc = ::CreateCompatibleDC( hdc ); - // ::SelectObject( memdc, hbitmap); - // ::SetDIBitsToDevice( memdc, 0, 0, width, height, - // 0, 0, 0, height, (void *)lpBits, lpDIBh, DIB_RGB_COLORS); - // ::SelectObject( memdc, 0 ); - // ::DeleteDC( memdc ); - } - SetHBITMAP( (WXHBITMAP) hbitmap ); - -#if wxUSE_PALETTE - if (hOldPalette) - SelectPalette(memdc, hOldPalette, FALSE); -#endif // wxUSE_PALETTE - - // similarly, created an mono-bitmap for the possible mask - if( image.HasMask() ) - { - hbitmap = ::CreateBitmap( (WORD)width, (WORD)bmpHeight, 1, 1, NULL ); - HGDIOBJ hbmpOld = ::SelectObject( memdc, hbitmap); - if( numDIB == 1 ) height = bmpHeight; - else height = sizeLimit/bytePerLine; - lpDIBh->bmiHeader.biHeight = (DWORD)(-height); - lpDIBh->bmiHeader.biSizeImage = bytePerLine*height; - origin = 0; - unsigned char r = image.GetMaskRed(); - unsigned char g = image.GetMaskGreen(); - unsigned char b = image.GetMaskBlue(); - unsigned char zero = 0, one = 255; - ptdata = data; - for( n=0; n 1 && n == numDIB - 1 && hRemain > 0 ) - { - // redefine height and size of the (possibly) last smaller DIB - // memory is not reallocated - height = hRemain; - lpDIBh->bmiHeader.biHeight = (DWORD)(-height); - lpDIBh->bmiHeader.biSizeImage = bytePerLine*height; - } - ptbits = lpBits; - for( int j=0; jSetMaskBitmap( (WXHBITMAP) hbitmap ); - SetMask( mask ); - // It will be deleted when the wxBitmap object is deleted (as of 01/1999) - /* The following can also be used but is slow to run - wxColour colour( GetMaskRed(), GetMaskGreen(), GetMaskBlue()); - wxMask *mask = new wxMask( *this, colour ); - SetMask( mask ); - */ - - ::SelectObject( memdc, hbmpOld ); - } - - // free allocated resources - ::DeleteDC( memdc ); - ::ReleaseDC(NULL, hdc); - free(lpDIBh); - free(lpBits); -#endif // wxUSE_DIB_FOR_BITMAP - -#if WXWIN_COMPATIBILITY_2 - // check the wxBitmap object - GetBitmapData()->SetOk(); -#endif // WXWIN_COMPATIBILITY_2 - - return TRUE; -#endif // __WXMICROWIN__/!__WXMICROWIN__ + return true; } wxImage wxBitmap::ConvertToImage() const { -#ifdef __WXMICROWIN__ // Initial attempt at a simple-minded implementation. // The bitmap will always be created at the screen depth, // so the 'depth' argument is ignored. // TODO: transparency (create a mask image) - if (!Ok()) + if (!IsOk()) { wxFAIL_MSG( wxT("bitmap is invalid") ); return wxNullImage; @@ -884,7 +741,7 @@ 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(); @@ -930,138 +787,237 @@ wxImage wxBitmap::ConvertToImage() const #endif // wxUSE_PALETTE return image; +} -#else // !__WXMICROWIN__ - wxImage image; +#endif // __WXMICROWIN__ - wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") ); +// ---------------------------------------------------------------------------- +// wxImage to/from conversions +// ---------------------------------------------------------------------------- - // create an wxImage object - int width = GetWidth(); - int height = GetHeight(); - image.Create( width, height ); - unsigned char *data = image.GetData(); - if( !data ) +bool wxBitmap::CreateFromImage(const wxImage& image, int depth) +{ + return CreateFromImage(image, depth, 0); +} + +bool wxBitmap::CreateFromImage(const wxImage& image, const wxDC& dc) +{ + wxCHECK_MSG( dc.IsOk(), false, + wxT("invalid HDC in wxBitmap::CreateFromImage()") ); + + const wxMSWDCImpl *impl = wxDynamicCast( dc.GetImpl(), wxMSWDCImpl ); + + if (impl) + return CreateFromImage(image, -1, impl->GetHDC()); + else + return false; +} + +#if wxUSE_WXDIB + +bool wxBitmap::CreateFromImage(const wxImage& image, int depth, WXHDC hdc) +{ + wxCHECK_MSG( image.IsOk(), false, wxT("invalid image") ); + + UnRef(); + + // first convert the image to DIB + const int h = image.GetHeight(); + const int w = image.GetWidth(); + + wxDIB dib(image); + if ( !dib.IsOk() ) + return false; + + const bool hasAlpha = image.HasAlpha(); + + if (depth == -1) + depth = dib.GetDepth(); + + // store the bitmap parameters + wxBitmapRefData * const refData = new wxBitmapRefData; + refData->m_width = w; + refData->m_height = h; + refData->m_hasAlpha = hasAlpha; + refData->m_depth = depth; + + m_refData = refData; + + + // next either store DIB as is or create a DDB from it + HBITMAP hbitmap wxDUMMY_INITIALIZE(0); + + // are we going to use DIB? + // + // NB: DDBs don't support alpha so if we have alpha channel we must use DIB + if ( hasAlpha || wxShouldCreateDIB(w, h, depth, hdc) ) { - wxFAIL_MSG( wxT("could not allocate data for image") ); - return wxNullImage; - } + // don't delete the DIB section in dib object dtor + hbitmap = dib.Detach(); - // 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 ) + refData->m_isDIB = true; + } +#ifndef ALWAYS_USE_DIB + else // we need to convert DIB to DDB { - padding = sizeDWORD - lineBoundary; - bytePerLine += padding; + hbitmap = dib.CreateDDB((HDC)hdc); } +#endif // !ALWAYS_USE_DIB + + // validate this object + SetHBITMAP((WXHBITMAP)hbitmap); - // create a DIB header - int headersize = sizeof(BITMAPINFOHEADER); - BITMAPINFO *lpDIBh = (BITMAPINFO *) malloc( headersize ); - if( !lpDIBh ) + // finally also set the mask if we have one + if ( image.HasMask() ) { - wxFAIL_MSG( wxT("could not allocate data for DIB header") ); - free( data ); - return wxNullImage; + 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(wxT("CreateBitmap(mask)")); + } + else + { + SetMask(new wxMask((WXHBITMAP)hbitmap)); + } + + delete[] data; } - // 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 ) + + return true; +} + +wxImage wxBitmap::ConvertToImage() const +{ + // convert DDB to DIB + wxDIB dib(*this); + + if ( !dib.IsOk() ) { - 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; -#endif // __WXMICROWIN__/!__WXMICROWIN__ } +#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 -bool wxBitmap::LoadFile(const wxString& filename, long type) +// ---------------------------------------------------------------------------- +// loading and saving bitmaps +// ---------------------------------------------------------------------------- + +bool wxBitmap::LoadFile(const wxString& filename, wxBitmapType type) { UnRef(); @@ -1073,23 +1029,23 @@ 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() ) + if ( image.LoadFile( filename, type ) && image.IsOk() ) { *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, wxBitmapType type, int width, int height, int depth) { UnRef(); @@ -1099,7 +1055,7 @@ 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; @@ -1108,8 +1064,8 @@ bool wxBitmap::Create(void *data, long type, int width, int height, int depth) } bool wxBitmap::SaveFile(const wxString& filename, - int type, - const wxPalette *palette) + wxBitmapType type, + const wxPalette *palette) const { wxBitmapHandler *handler = wxDynamicCast(FindHandler(type), wxBitmapHandler); @@ -1117,48 +1073,63 @@ 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(); - if ( image.Ok() ) + if ( image.IsOk() ) { return image.SaveFile(filename, type); } } #endif // wxUSE_IMAGE - return FALSE; + return false; } // ---------------------------------------------------------------------------- // sub bitmap extraction // ---------------------------------------------------------------------------- +wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect ) const +{ + MemoryHDC dcSrc; + SelectInHDC selectSrc(dcSrc, GetHbitmap()); + return GetSubBitmapOfHDC( rect, (WXHDC)dcSrc ); +} -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 + if (HasAlpha()) + ret.UseAlpha(); + // copy bitmap data - MemoryHDC dcSrc, dcDst; + MemoryHDC dcSrc, + dcDst; { - SelectInHDC selectSrc(dcSrc, GetHbitmap()), - selectDst(dcDst, GetHbitmapOf(ret)); + SelectInHDC selectDst(dcDst, GetHbitmapOf(ret)); + + if ( !selectDst ) + { + wxLogLastError(wxT("SelectObject(destBitmap)")); + } if ( !::BitBlt(dcDst, 0, 0, rect.width, rect.height, - dcSrc, rect.x, rect.y, SRCCOPY) ) + (HDC)hdc, rect.x, rect.y, SRCCOPY) ) { - wxLogLastError(_T("BitBlt")); + wxLogLastError(wxT("BitBlt")); } } @@ -1173,7 +1144,7 @@ wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect) const if ( !::BitBlt(dcDst, 0, 0, rect.width, rect.height, dcSrc, rect.x, rect.y, SRCCOPY) ) { - wxLogLastError(_T("BitBlt")); + wxLogLastError(wxT("BitBlt")); } wxMask *mask = new wxMask((WXHBITMAP) hbmpMask); @@ -1188,27 +1159,58 @@ wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect) const // wxBitmap accessors // ---------------------------------------------------------------------------- -void wxBitmap::SetQuality(int q) +#if wxUSE_PALETTE +wxPalette* wxBitmap::GetPalette() const { - EnsureHasData(); + return GetBitmapData() ? &GetBitmapData()->m_bitmapPalette + : NULL; +} +#endif - GetBitmapData()->m_quality = q; +wxMask *wxBitmap::GetMask() const +{ + return GetBitmapData() ? GetBitmapData()->GetMask() : NULL; } -#if WXWIN_COMPATIBILITY_2 -void wxBitmap::SetOk(bool isOk) +wxDC *wxBitmap::GetSelectedInto() const { - EnsureHasData(); +#if wxDEBUG_LEVEL + return GetBitmapData() ? GetBitmapData()->m_selectedInto : NULL; +#else + return NULL; +#endif +} - GetBitmapData()->m_ok = isOk; +void wxBitmap::UseAlpha() +{ + if ( GetBitmapData() ) + GetBitmapData()->m_hasAlpha = true; +} + +bool wxBitmap::HasAlpha() const +{ + return GetBitmapData() && GetBitmapData()->m_hasAlpha; +} + +// ---------------------------------------------------------------------------- +// wxBitmap setters +// ---------------------------------------------------------------------------- + +void wxBitmap::SetSelectedInto(wxDC *dc) +{ +#if wxDEBUG_LEVEL + if ( GetBitmapData() ) + GetBitmapData()->m_selectedInto = dc; +#else + wxUnusedVar(dc); +#endif } -#endif // WXWIN_COMPATIBILITY_2 #if wxUSE_PALETTE void wxBitmap::SetPalette(const wxPalette& palette) { - EnsureHasData(); + AllocExclusive(); GetBitmapData()->m_bitmapPalette = palette; } @@ -1217,71 +1219,124 @@ void wxBitmap::SetPalette(const wxPalette& palette) void wxBitmap::SetMask(wxMask *mask) { - EnsureHasData(); + AllocExclusive(); - GetBitmapData()->m_bitmapMask = mask; + GetBitmapData()->SetMask(mask); } -// 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 +// ---------------------------------------------------------------------------- +// raw bitmap access support +// ---------------------------------------------------------------------------- + +#ifdef wxHAS_RAW_BITMAP + +void *wxBitmap::GetRawData(wxPixelDataBase& data, int bpp) { -#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 ( !IsOk() ) + { + // no bitmap, no data (raw or otherwise) + return NULL; + } -#if wxUSE_PALETTE - if( GetPalette() && GetPalette()->Ok() ) + // 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 ) { - tmpBitmap.SetPalette(*GetPalette()); - memDC.SelectObject(tmpBitmap); - memDC.SetPalette(*GetPalette()); - hPal = (HPALETTE)GetPalette()->GetHPALETTE(); + wxCHECK_MSG( !GetBitmapData()->m_dib, NULL, + wxT("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 + else // we're a DIB { - hPal = (HPALETTE) ::GetStockObject(DEFAULT_PALETTE); - wxPalette palette; - palette.SetHPALETTE( (WXHPALETTE)hPal ); - tmpBitmap.SetPalette( palette ); - memDC.SelectObject(tmpBitmap); - memDC.SetPalette( palette ); + hDIB = GetHbitmap(); } -#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) ) + DIBSECTION ds; + if ( ::GetObject(hDIB, sizeof(ds), &ds) != sizeof(DIBSECTION) ) { - return wxNullBitmap; + wxFAIL_MSG( wxT("failed to get DIBSECTION from a DIB?") ); + + return NULL; } - lpBits = malloc(lpDib->bmiHeader.biSizeImage); + // check that the bitmap is in correct format + if ( ds.dsBm.bmBitsPixel != bpp ) + { + wxFAIL_MSG( wxT("incorrect bitmap type in wxBitmap::GetRawData()") ); - ::GetBitmapBits(GetHbitmap(), lpDib->bmiHeader.biSizeImage, lpBits); + return NULL; + } - ::SetDIBitsToDevice(GetHdcOf(memDC), 0, 0, - GetWidth(), GetHeight(), - 0, 0, 0, GetHeight(), - lpBits, lpDib, DIB_RGB_COLORS); + // ok, store the relevant info in wxPixelDataBase + const LONG h = ds.dsBm.bmHeight; - free(lpBits); + data.m_width = ds.dsBm.bmWidth; + data.m_height = h; - wxFreeDIB(lpDib); + // remember that DIBs are stored in top to bottom order! + // (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; - return tmpBitmap; + char *bits = (char *)ds.dsBm.bmBits; + if ( h > 1 ) + { + bits += (h - 1)*bytesPerRow; + } + + return bits; +#else + return NULL; #endif } +void wxBitmap::UngetRawData(wxPixelDataBase& dataBase) +{ +#if wxUSE_WXDIB + if ( !IsOk() ) + return; + + if ( !&dataBase ) + { + // 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; + } + + // 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 ) + { + wxDIB *dib = GetBitmapData()->m_dib; + GetBitmapData()->m_dib = NULL; + + // TODO: convert + + delete dib; + } +#endif // wxUSE_WXDIB +} +#endif // wxHAS_RAW_BITMAP + // ---------------------------------------------------------------------------- // wxMask // ---------------------------------------------------------------------------- @@ -1291,6 +1346,39 @@ wxMask::wxMask() m_maskBitmap = 0; } +// Copy constructor +wxMask::wxMask(const wxMask &mask) + : wxObject() +{ + BITMAP bmp; + + HDC srcDC = CreateCompatibleDC(0); + HDC destDC = CreateCompatibleDC(0); + + // GetBitmapDimensionEx won't work if SetBitmapDimensionEx wasn't used + // so we'll use GetObject() API here: + if (::GetObject((HGDIOBJ)mask.m_maskBitmap, sizeof(bmp), &bmp) == 0) + { + wxFAIL_MSG(wxT("Cannot retrieve the dimensions of the wxMask to copy")); + return; + } + + // create our HBITMAP + int w = bmp.bmWidth, h = bmp.bmHeight; + m_maskBitmap = (WXHBITMAP)CreateCompatibleBitmap(srcDC, w, h); + + // copy the mask's HBITMAP into our HBITMAP + SelectObject(srcDC, (HBITMAP) mask.m_maskBitmap); + SelectObject(destDC, (HBITMAP) m_maskBitmap); + + BitBlt(destDC, 0, 0, w, h, srcDC, 0, 0, SRCCOPY); + + SelectObject(srcDC, 0); + DeleteDC(srcDC); + SelectObject(destDC, 0); + DeleteDC(destDC); +} + // Construct a mask from a bitmap and a colour indicating // the transparent area wxMask::wxMask(const wxBitmap& bitmap, const wxColour& colour) @@ -1324,8 +1412,8 @@ wxMask::~wxMask() bool wxMask::Create(const wxBitmap& bitmap) { #ifndef __WXMICROWIN__ - wxCHECK_MSG( bitmap.Ok() && bitmap.GetDepth() == 1, FALSE, - _T("can't create mask from invalid or not monochrome bitmap") ); + wxCHECK_MSG( bitmap.IsOk() && bitmap.GetDepth() == 1, false, + wxT("can't create mask from invalid or not monochrome bitmap") ); if ( m_maskBitmap ) { @@ -1347,9 +1435,10 @@ 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 } @@ -1364,7 +1453,7 @@ 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)) @@ -1375,7 +1464,7 @@ 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 @@ -1383,7 +1472,7 @@ 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.IsOk(), false, wxT("invalid bitmap in wxMask::Create") ); if ( m_maskBitmap ) { @@ -1406,18 +1495,18 @@ 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(), - _T("bitmap can't be selected in another DC") ); + wxT("bitmap can't be selected in another DC") ); HGDIOBJ hbmpSrcOld = ::SelectObject(srcDC, GetHbitmapOf(bitmap)); if ( !hbmpSrcOld ) { wxLogLastError(wxT("SelectObject")); - ok = FALSE; + ok = false; } HGDIOBJ hbmpDstOld = ::SelectObject(destDC, (HBITMAP)m_maskBitmap); @@ -1425,7 +1514,7 @@ bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour) { wxLogLastError(wxT("SelectObject")); - ok = FALSE; + ok = false; } if ( ok ) @@ -1444,132 +1533,195 @@ bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour) return ok; #else // __WXMICROWIN__ - return FALSE; + wxUnusedVar(bitmap); + wxUnusedVar(colour); + return false; #endif // __WXMICROWIN__/!__WXMICROWIN__ } +wxBitmap wxMask::GetBitmap() const +{ + wxBitmap bmp; + bmp.SetHBITMAP(m_maskBitmap); + return bmp; +} + // ---------------------------------------------------------------------------- // wxBitmapHandler // ---------------------------------------------------------------------------- bool wxBitmapHandler::Create(wxGDIImage *image, - void *data, - long flags, + const void* data, + wxBitmapType type, 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, type, width, height, depth); } bool wxBitmapHandler::Load(wxGDIImage *image, const wxString& name, - long flags, + wxBitmapType type, int width, int height) { wxBitmap *bitmap = wxDynamicCast(image, wxBitmap); - return bitmap ? LoadFile(bitmap, name, flags, width, height) : FALSE; + return bitmap && LoadFile(bitmap, name, type, width, height); } -bool wxBitmapHandler::Save(wxGDIImage *image, +bool wxBitmapHandler::Save(const wxGDIImage *image, const wxString& name, - int type) + wxBitmapType type) const { 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), - long WXUNUSED(type), + const void* WXUNUSED(data), + wxBitmapType WXUNUSED(type), int WXUNUSED(width), int WXUNUSED(height), int WXUNUSED(depth)) { - return FALSE; + return false; } bool wxBitmapHandler::LoadFile(wxBitmap *WXUNUSED(bitmap), const wxString& WXUNUSED(name), - long WXUNUSED(type), + wxBitmapType WXUNUSED(type), int WXUNUSED(desiredWidth), int WXUNUSED(desiredHeight)) { - return FALSE; + return false; } -bool wxBitmapHandler::SaveFile(wxBitmap *WXUNUSED(bitmap), +bool wxBitmapHandler::SaveFile(const wxBitmap *WXUNUSED(bitmap), const wxString& WXUNUSED(name), - int WXUNUSED(type), - const wxPalette *WXUNUSED(palette)) + wxBitmapType WXUNUSED(type), + const wxPalette *WXUNUSED(palette)) const { - return FALSE; + return false; } // ---------------------------------------------------------------------------- -// DIB functions +// global helper functions implemented here // ---------------------------------------------------------------------------- -#ifndef __WXMICROWIN__ -bool wxCreateDIB(long xSize, long ySize, long bitsPerPixel, - HPALETTE hPal, LPBITMAPINFO* lpDIBHeader) +// helper of wxBitmapToHICON/HCURSOR +static +HICON wxBitmapToIconOrCursor(const wxBitmap& bmp, + bool iconWanted, + int hotSpotX, + int hotSpotY) { - unsigned long i, headerSize; - LPBITMAPINFO lpDIBheader = NULL; - LPPALETTEENTRY lpPe = NULL; + if ( !bmp.IsOk() ) + { + // we can't create an icon/cursor form nothing + return 0; + } + if ( bmp.HasAlpha() ) + { + HBITMAP hbmp; - // Allocate space for a DIB header - headerSize = (sizeof(BITMAPINFOHEADER) + (256 * sizeof(PALETTEENTRY))); - lpDIBheader = (BITMAPINFO *) malloc(headerSize); - lpPe = (PALETTEENTRY *)((BYTE*)lpDIBheader + sizeof(BITMAPINFOHEADER)); +#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. + AutoHBITMAP + 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; + } - GetPaletteEntries(hPal, 0, 256, lpPe); + iconInfo.hbmMask = hMonoBitmap; + iconInfo.hbmColor = hbmp; - memset(lpDIBheader, 0x00, sizeof(BITMAPINFOHEADER)); + return ::CreateIconIndirect(&iconInfo); + } - // Fill in the static parts of the DIB header - lpDIBheader->bmiHeader.biSize = sizeof(BITMAPINFOHEADER); - lpDIBheader->bmiHeader.biWidth = xSize; - lpDIBheader->bmiHeader.biHeight = ySize; - lpDIBheader->bmiHeader.biPlanes = 1; + wxMask* mask = bmp.GetMask(); - // 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.biClrUsed = 256; + if ( !mask ) + { + // we must have a mask for an icon, so even if it's probably incorrect, + // do create it (grey is the "standard" transparent colour) + mask = new wxMask(bmp, *wxLIGHT_GREY); + } + ICONINFO iconInfo; + wxZeroMemory(iconInfo); + iconInfo.fIcon = iconWanted; // do we want an icon or a cursor? + if ( !iconWanted ) + { + iconInfo.xHotspot = hotSpotX; + iconInfo.yHotspot = hotSpotY; + } - // Initialize the DIB palette - for (i = 0; i < 256; i++) { - lpDIBheader->bmiColors[i].rgbReserved = lpPe[i].peFlags; - lpDIBheader->bmiColors[i].rgbRed = lpPe[i].peRed; - lpDIBheader->bmiColors[i].rgbGreen = lpPe[i].peGreen; - lpDIBheader->bmiColors[i].rgbBlue = lpPe[i].peBlue; - } + AutoHBITMAP hbmpMask(wxInvertMask((HBITMAP)mask->GetMaskBitmap())); + iconInfo.hbmMask = hbmpMask; + iconInfo.hbmColor = GetHbitmapOf(bmp); - *lpDIBHeader = lpDIBheader; + // black out the transparent area to preserve background colour, because + // Windows blits the original bitmap using SRCINVERT (XOR) after applying + // the mask to the dest rect. + { + MemoryHDC dcSrc, dcDst; + SelectInHDC selectMask(dcSrc, (HBITMAP)mask->GetMaskBitmap()), + selectBitmap(dcDst, iconInfo.hbmColor); - return TRUE; + if ( !::BitBlt(dcDst, 0, 0, bmp.GetWidth(), bmp.GetHeight(), + dcSrc, 0, 0, SRCAND) ) + { + wxLogLastError(wxT("BitBlt")); + } + } + + HICON hicon = ::CreateIconIndirect(&iconInfo); + + if ( !bmp.GetMask() && !bmp.HasAlpha() ) + { + // we created the mask, now delete it + delete mask; + } + + return hicon; } -void wxFreeDIB(LPBITMAPINFO lpDIBHeader) +HICON wxBitmapToHICON(const wxBitmap& bmp) { - free(lpDIBHeader); + return wxBitmapToIconOrCursor(bmp, true, 0, 0); } -#endif -// ---------------------------------------------------------------------------- -// other helper functions -// ---------------------------------------------------------------------------- +HCURSOR wxBitmapToHCURSOR(const wxBitmap& bmp, int hotSpotX, int hotSpotY) +{ + return (HCURSOR)wxBitmapToIconOrCursor(bmp, false, hotSpotX, hotSpotY); +} -extern HBITMAP wxInvertMask(HBITMAP hbmpMask, int w, int h) +HBITMAP wxInvertMask(HBITMAP hbmpMask, int w, int h) { #ifndef __WXMICROWIN__ - wxCHECK_MSG( hbmpMask, 0, _T("invalid bitmap in wxInvertMask") ); + wxCHECK_MSG( hbmpMask, 0, wxT("invalid bitmap in wxInvertMask") ); // get width/height from the bitmap if not given if ( !w || !h ) @@ -1593,8 +1745,8 @@ extern 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) ) @@ -1602,6 +1754,10 @@ extern HBITMAP wxInvertMask(HBITMAP hbmpMask, int w, int h) wxLogLastError(wxT("BitBlt")); } + // Deselect objects + SelectObject(hdcSrc,srcTmp); + SelectObject(hdcDst,dstTmp); + ::DeleteDC(hdcSrc); ::DeleteDC(hdcDst);