X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/4fe5383d6c6463e16e2d5b6b5fefe311b33e128f..56b9925b116dfa58028fccb2556852f2da2ab9ac:/src/msw/bitmap.cpp diff --git a/src/msw/bitmap.cpp b/src/msw/bitmap.cpp index 4ac9166ef9..ad7929de21 100644 --- a/src/msw/bitmap.cpp +++ b/src/msw/bitmap.cpp @@ -1,12 +1,12 @@ -///////////////////////////////////////////////////////////////////////////// +//////////////////////////////////////////////////////////////////////////// // Name: 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 ///////////////////////////////////////////////////////////////////////////// // ============================================================================ @@ -17,7 +17,7 @@ // headers // ---------------------------------------------------------------------------- -#ifdef __GNUG__ +#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) #pragma implementation "bitmap.h" #endif @@ -43,777 +43,1731 @@ #include "wx/msw/private.h" #include "wx/log.h" +#if wxUSE_WXDIB #include "wx/msw/dib.h" +#endif + +#include "wx/image.h" +#include "wx/xpmdecod.h" + +#ifdef wxHAVE_RAW_BITMAP +#include "wx/rawbmp.h" +#endif + +// missing from mingw32 header +#ifndef CLR_INVALID + #define CLR_INVALID ((COLORREF)-1) +#endif // no CLR_INVALID // ---------------------------------------------------------------------------- -// macros +// Bitmap data // ---------------------------------------------------------------------------- -#if !USE_SHARED_LIBRARIES - IMPLEMENT_DYNAMIC_CLASS(wxBitmap, wxGDIObject) - IMPLEMENT_DYNAMIC_CLASS(wxMask, wxObject) +class WXDLLEXPORT wxBitmapRefData : public wxGDIImageRefData +{ +public: + wxBitmapRefData(); + virtual ~wxBitmapRefData() { Free(); } + + virtual void Free(); + + // 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 + // ------------ + +#ifdef __WXDEBUG__ + // 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__ + +#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) +}; + +// ---------------------------------------------------------------------------- +// macros +// ---------------------------------------------------------------------------- + +IMPLEMENT_DYNAMIC_CLASS(wxBitmap, wxGDIObject) +IMPLEMENT_DYNAMIC_CLASS(wxMask, wxObject) + +IMPLEMENT_DYNAMIC_CLASS(wxBitmapHandler, wxObject) + // ============================================================================ // implementation // ============================================================================ +// ---------------------------------------------------------------------------- +// helper functions +// ---------------------------------------------------------------------------- + +// 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) +{ +#if wxUSE_WXDIB + // 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)); +#else + return FALSE; +#endif +} + // ---------------------------------------------------------------------------- // wxBitmapRefData // ---------------------------------------------------------------------------- wxBitmapRefData::wxBitmapRefData() { - m_ok = FALSE; - m_width = 0; - m_height = 0; - m_depth = 0; - m_quality = 0; - m_hBitmap = 0 ; - m_selectedInto = NULL; - m_numColors = 0; - m_bitmapMask = NULL; +#ifdef __WXDEBUG__ + m_selectedInto = NULL; +#endif + m_bitmapMask = NULL; + + m_hBitmap = (WXHBITMAP) NULL; +#if wxUSE_WXDIB + m_dib = NULL; +#endif + + m_isDIB = + m_hasAlpha = FALSE; } -wxBitmapRefData::~wxBitmapRefData() +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) - DeleteObject((HBITMAP) m_hBitmap); + { + if ( !::DeleteObject((HBITMAP)m_hBitmap) ) + { + wxLogLastError(wxT("DeleteObject(hbitmap)")); + } + } - if ( m_bitmapMask ) - delete m_bitmapMask; + delete m_bitmapMask; + m_bitmapMask = NULL; } // ---------------------------------------------------------------------------- -// wxBitmap +// wxBitmap creation // ---------------------------------------------------------------------------- -wxList wxBitmap::sm_handlers; - // this function should be called from all wxBitmap ctors void wxBitmap::Init() { // m_refData = NULL; done in the base class ctor +} - if ( wxTheBitmapList ) - wxTheBitmapList->AddBitmap(this); +wxGDIImageRefData *wxBitmap::CreateData() const +{ + return new wxBitmapRefData; } -bool wxBitmap::CopyFromIcon(const wxIcon& icon) +#ifdef __WIN32__ + +bool wxBitmap::CopyFromIconOrCursor(const wxGDIImage& icon) +{ +#if !defined(__WXMICROWIN__) && !defined(__WXWINCE__) + // it may be either HICON or HCURSOR + HICON hicon = (HICON)icon.GetHandle(); + + ICONINFO iconInfo; + if ( !::GetIconInfo(hicon, &iconInfo) ) + { + wxLogLastError(wxT("GetIconInfo")); + + return FALSE; + } + + wxBitmapRefData *refData = new wxBitmapRefData; + m_refData = refData; + + int w = icon.GetWidth(), + h = icon.GetHeight(); + + refData->m_width = w; + refData->m_height = h; + refData->m_depth = wxDisplayDepth(); + + 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)); + + + // delete the old one now as we don't need it any more + ::DeleteObject(iconInfo.hbmMask); + + return TRUE; +#else + return FALSE; +#endif +} + +#endif // Win32 + +bool wxBitmap::CopyFromCursor(const wxCursor& cursor) { UnRef(); - if ( !icon.Ok() ) + if ( !cursor.Ok() ) return FALSE; - int width = icon.GetWidth(), - height = icon.GetHeight(); +#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) +{ + UnRef(); - HICON hicon = (HICON) icon.GetHICON(); + 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 - HDC hdcScreen = ::GetDC((HWND)NULL); + ScreenHDC hdcScreen; HDC hdc = ::CreateCompatibleDC(hdcScreen); HBITMAP hbitmap = ::CreateCompatibleBitmap(hdcScreen, width, height); HBITMAP hbmpOld = (HBITMAP)::SelectObject(hdc, hbitmap); - ::DrawIcon(hdc, 0, 0, hicon); + ::DrawIcon(hdc, 0, 0, GetHiconOf(icon)); ::SelectObject(hdc, hbmpOld); ::DeleteDC(hdc); - ::ReleaseDC((HWND)NULL, hdcScreen); + + wxBitmapRefData *refData = new wxBitmapRefData; + m_refData = refData; + + refData->m_width = width; + refData->m_height = height; + refData->m_depth = wxDisplayDepth(); + + refData->m_hBitmap = (WXHBITMAP)hbitmap; + + return TRUE; #else // Win32 - ICONINFO iconInfo; - if ( !GetIconInfo(hicon, &iconInfo) ) - { - wxLogLastError("GetIconInfo"); + return CopyFromIconOrCursor(icon); +#endif // Win16/Win32 +} +#if wxUSE_WXDIB +bool wxBitmap::CopyFromDIB(const wxDIB& dib) +{ + wxCHECK_MSG( dib.IsOk(), FALSE, _T("invalid DIB in CopyFromDIB") ); + + HBITMAP hbitmap = dib.CreateDDB(); + if ( !hbitmap ) return FALSE; - } - HBITMAP hbitmap = iconInfo.hbmColor; + UnRef(); - wxBitmap bmpMask(width, height, 1); - bmpMask.SetHBITMAP((WXHBITMAP)iconInfo.hbmMask); + wxBitmapRefData *refData = new wxBitmapRefData; + m_refData = refData; - SetMask(new wxMask(bmpMask)); -#endif // Win16/32 + refData->m_width = dib.GetWidth(); + refData->m_height = dib.GetHeight(); + refData->m_depth = dib.GetDepth(); - m_refData = new wxBitmapRefData; + refData->m_hBitmap = (WXHBITMAP)hbitmap; - M_BITMAPDATA->m_width = width; - M_BITMAPDATA->m_height = height; - M_BITMAPDATA->m_depth = wxDisplayDepth(); +#if wxUSE_PALETTE + wxPalette *palette = dib.CreatePalette(); + if ( palette ) + { + refData->m_bitmapPalette = *palette; + } - M_BITMAPDATA->m_hBitmap = (WXHBITMAP)hbitmap; - M_BITMAPDATA->m_ok = TRUE; + delete palette; +#endif // wxUSE_PALETTE return TRUE; } +#endif wxBitmap::~wxBitmap() { - if (wxTheBitmapList) - wxTheBitmapList->DeleteObject(this); - - delete GetMask(); } -bool wxBitmap::FreeResource(bool WXUNUSED(force)) +wxBitmap::wxBitmap(const char bits[], int width, int height, int depth) { - if ( !M_BITMAPDATA ) - return FALSE; + Init(); - wxASSERT_MSG( !M_BITMAPDATA->m_selectedInto, - wxT("freeing bitmap still selected into wxMemoryDC") ); +#ifndef __WXMICROWIN__ + wxBitmapRefData *refData = new wxBitmapRefData; + m_refData = refData; - if (M_BITMAPDATA->m_hBitmap) - { - DeleteObject((HBITMAP) M_BITMAPDATA->m_hBitmap); - } - M_BITMAPDATA->m_hBitmap = 0 ; + refData->m_width = width; + refData->m_height = height; + refData->m_depth = depth; -/* - if (M_BITMAPDATA->m_bitmapPalette) - delete M_BITMAPDATA->m_bitmapPalette; + 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! + const size_t bytesPerLine = (width + 7) / 8; + const size_t padding = bytesPerLine % 2; + const size_t len = height * ( padding + bytesPerLine ); + data = (char *)malloc(len); + const char *src = bits; + char *dst = data; + + for ( int rows = 0; rows < height; rows++ ) + { + for ( size_t cols = 0; cols < bytesPerLine; cols++ ) + { + unsigned char val = *src++; + unsigned char reversed = 0; + + for ( int bits = 0; bits < 8; bits++) + { + reversed <<= 1; + reversed |= (val & 0x01); + val >>= 1; + } + *dst++ = reversed; + } + + if ( padding ) + *dst++ = 0; + } + } + else + { + // bits should already be in Windows standard format + data = (char *)bits; // const_cast is harmless + } - M_BITMAPDATA->m_bitmapPalette = NULL ; -*/ + HBITMAP hbmp = ::CreateBitmap(width, height, 1, depth, data); + if ( !hbmp ) + { + wxLogLastError(wxT("CreateBitmap")); + } - return TRUE; -} + if ( data != bits ) + { + free(data); + } + SetHBITMAP((WXHBITMAP)hbmp); +#endif +} -wxBitmap::wxBitmap(const char bits[], int the_width, int the_height, int no_bits) +// Create from XPM data +bool wxBitmap::CreateFromXpm(const char **data) { +#if wxUSE_IMAGE && wxUSE_XPM Init(); - m_refData = new wxBitmapRefData; - - M_BITMAPDATA->m_width = the_width ; - M_BITMAPDATA->m_height = the_height ; - M_BITMAPDATA->m_depth = no_bits ; - M_BITMAPDATA->m_numColors = 0; + wxCHECK_MSG( data != NULL, FALSE, wxT("invalid bitmap data") ) - M_BITMAPDATA->m_hBitmap = (WXHBITMAP) CreateBitmap(the_width, the_height, 1, no_bits, bits); + wxXPMDecoder decoder; + wxImage img = decoder.ReadData(data); + wxCHECK_MSG( img.Ok(), FALSE, wxT("invalid bitmap data") ) - if (M_BITMAPDATA->m_hBitmap) - M_BITMAPDATA->m_ok = TRUE; - else - M_BITMAPDATA->m_ok = FALSE; - - M_BITMAPDATA->m_selectedInto = NULL; + *this = wxBitmap(img); + return TRUE; +#else + return FALSE; +#endif } -// Create from XPM data -wxBitmap::wxBitmap(char **data, wxControl *WXUNUSED(anItem)) +wxBitmap::wxBitmap(int w, int h, int d) { Init(); - (void)Create((void *)data, wxBITMAP_TYPE_XPM_DATA, 0, 0, 0); + (void)Create(w, h, d); } -wxBitmap::wxBitmap(int w, int h, int d) +wxBitmap::wxBitmap(int w, int h, const wxDC& dc) { Init(); - (void)Create(w, h, d); + (void)Create(w, h, dc); } wxBitmap::wxBitmap(void *data, long type, int width, int height, int depth) { Init(); - (void) Create(data, type, width, height, depth); + (void)Create(data, type, width, height, depth); } -wxBitmap::wxBitmap(const wxString& filename, long type) +wxBitmap::wxBitmap(const wxString& filename, wxBitmapType type) { Init(); LoadFile(filename, (int)type); } -bool wxBitmap::Create(int w, int h, int d) +bool wxBitmap::Create(int width, int height, int depth) { - UnRef(); - - m_refData = new wxBitmapRefData; - - M_BITMAPDATA->m_width = w; - M_BITMAPDATA->m_height = h; - M_BITMAPDATA->m_depth = d; - - if (d > 0) - { - M_BITMAPDATA->m_hBitmap = (WXHBITMAP) CreateBitmap(w, h, 1, d, NULL); - } - else - { - HDC dc = GetDC((HWND) NULL); - M_BITMAPDATA->m_hBitmap = (WXHBITMAP) CreateCompatibleBitmap(dc, w, h); - ReleaseDC((HWND) NULL, dc); - M_BITMAPDATA->m_depth = wxDisplayDepth(); - } - if (M_BITMAPDATA->m_hBitmap) - M_BITMAPDATA->m_ok = TRUE; - else - M_BITMAPDATA->m_ok = FALSE; - return M_BITMAPDATA->m_ok; + return DoCreate(width, height, depth, 0); } -bool wxBitmap::LoadFile(const wxString& filename, long type) +bool wxBitmap::Create(int width, int height, const wxDC& dc) { - UnRef(); - - m_refData = new wxBitmapRefData; - - wxBitmapHandler *handler = FindHandler(type); - - if ( handler == NULL ) { - wxLogWarning(wxT("no bitmap handler for type %d defined."), type); - - return FALSE; - } + wxCHECK_MSG( dc.Ok(), FALSE, _T("invalid HDC in wxBitmap::Create()") ); - return handler->LoadFile(this, filename, type, -1, -1); + return DoCreate(width, height, -1, dc.GetHDC()); } -bool wxBitmap::Create(void *data, long type, int width, int height, int depth) +bool wxBitmap::DoCreate(int w, int h, int d, WXHDC hdc) { - UnRef(); + UnRef(); - m_refData = new wxBitmapRefData; + m_refData = new wxBitmapRefData; - wxBitmapHandler *handler = FindHandler(type); + GetBitmapData()->m_width = w; + GetBitmapData()->m_height = h; - if ( handler == NULL ) { - wxLogWarning(wxT("no bitmap handler for type %d defined."), type); + HBITMAP hbmp; - return FALSE; - } +#if wxUSE_WXDIB + if ( wxShouldCreateDIB(w, h, d, hdc) ) + { + if ( d == -1 ) + { + // create DIBs without alpha channel by default + d = 24; + } - return handler->Create(this, data, type, width, height, depth); -} + wxDIB dib(w, h, d); + if ( !dib.IsOk() ) + return FALSE; -bool wxBitmap::SaveFile(const wxString& filename, int type, const wxPalette *palette) -{ - wxBitmapHandler *handler = FindHandler(type); + // don't delete the DIB section in dib object dtor + hbmp = dib.Detach(); - if ( handler == NULL ) { - wxLogWarning(wxT("no bitmap handler for type %d defined."), type); + GetBitmapData()->m_isDIB = TRUE; + GetBitmapData()->m_depth = d; + } + else // create a DDB +#endif + { - return FALSE; - } +#ifndef __WXMICROWIN__ + if ( d > 0 ) + { + hbmp = ::CreateBitmap(w, h, 1, d, NULL); + if ( !hbmp ) + { + wxLogLastError(wxT("CreateBitmap")); + } + } + else +#endif // !__WXMICROWIN__ + { + ScreenHDC dc; + hbmp = ::CreateCompatibleBitmap(dc, w, h); + if ( !hbmp ) + { + wxLogLastError(wxT("CreateCompatibleBitmap")); + } + + GetBitmapData()->m_depth = wxDisplayDepth(); + } + } - return handler->SaveFile(this, filename, type, palette); + SetHBITMAP((WXHBITMAP)hbmp); + + return Ok(); } -void wxBitmap::SetWidth(int w) -{ - if (!M_BITMAPDATA) - m_refData = new wxBitmapRefData; +#if wxUSE_IMAGE - M_BITMAPDATA->m_width = w; -} +// ---------------------------------------------------------------------------- +// wxImage to/from conversions for Microwin +// ---------------------------------------------------------------------------- + +// Microwin versions are so different from normal ones that it really doesn't +// make sense to use #ifdefs inside the function bodies +#ifdef __WXMICROWIN__ -void wxBitmap::SetHeight(int h) +bool wxBitmap::CreateFromImage(const wxImage& image, int depth, const wxDC& dc) { - if (!M_BITMAPDATA) - m_refData = new wxBitmapRefData; + // Set this to 1 to experiment with mask code, + // which currently doesn't work + #define USE_MASKS 0 - M_BITMAPDATA->m_height = h; -} + m_refData = new wxBitmapRefData(); -void wxBitmap::SetDepth(int d) -{ - if (!M_BITMAPDATA) - m_refData = new wxBitmapRefData; + // Initial attempt at a simple-minded implementation. + // The bitmap will always be created at the screen depth, + // so the 'depth' argument is ignored. - M_BITMAPDATA->m_depth = d; -} + HDC hScreenDC = ::GetDC(NULL); + int screenDepth = ::GetDeviceCaps(hScreenDC, BITSPIXEL); -void wxBitmap::SetQuality(int q) -{ - if (!M_BITMAPDATA) - m_refData = new wxBitmapRefData; + HBITMAP hBitmap = ::CreateCompatibleBitmap(hScreenDC, image.GetWidth(), image.GetHeight()); + HBITMAP hMaskBitmap = NULL; + HBITMAP hOldMaskBitmap = NULL; + HDC hMaskDC = NULL; + unsigned char maskR = 0; + unsigned char maskG = 0; + unsigned char maskB = 0; - M_BITMAPDATA->m_quality = q; -} + // printf("Created bitmap %d\n", (int) hBitmap); + if (hBitmap == NULL) + { + ::ReleaseDC(NULL, hScreenDC); + return FALSE; + } + HDC hMemDC = ::CreateCompatibleDC(hScreenDC); -void wxBitmap::SetOk(bool isOk) -{ - if (!M_BITMAPDATA) - m_refData = new wxBitmapRefData; + HBITMAP hOldBitmap = ::SelectObject(hMemDC, hBitmap); + ::ReleaseDC(NULL, hScreenDC); - M_BITMAPDATA->m_ok = isOk; -} + // created an mono-bitmap for the possible mask + bool hasMask = image.HasMask(); -void wxBitmap::SetPalette(const wxPalette& palette) -{ - if (!M_BITMAPDATA) - m_refData = new wxBitmapRefData; + if ( hasMask ) + { +#if USE_MASKS + // FIXME: we should be able to pass bpp = 1, but + // GdBlit can't handle a different depth +#if 0 + hMaskBitmap = ::CreateBitmap( (WORD)image.GetWidth(), (WORD)image.GetHeight(), 1, 1, NULL ); +#else + hMaskBitmap = ::CreateCompatibleBitmap( hMemDC, (WORD)image.GetWidth(), (WORD)image.GetHeight()); +#endif + maskR = image.GetMaskRed(); + maskG = image.GetMaskGreen(); + maskB = image.GetMaskBlue(); - M_BITMAPDATA->m_bitmapPalette = palette ; -} + if (!hMaskBitmap) + { + hasMask = FALSE; + } + else + { + hScreenDC = ::GetDC(NULL); + hMaskDC = ::CreateCompatibleDC(hScreenDC); + ::ReleaseDC(NULL, hScreenDC); -void wxBitmap::SetMask(wxMask *mask) -{ - if (!M_BITMAPDATA) - m_refData = new wxBitmapRefData; + hOldMaskBitmap = ::SelectObject( hMaskDC, hMaskBitmap); + } +#else + hasMask = FALSE; +#endif + } - M_BITMAPDATA->m_bitmapMask = mask ; -} + int i, j; + for (i = 0; i < image.GetWidth(); i++) + { + for (j = 0; j < image.GetHeight(); j++) + { + unsigned char red = image.GetRed(i, j); + unsigned char green = image.GetGreen(i, j); + unsigned char blue = image.GetBlue(i, j); + + ::SetPixel(hMemDC, i, j, PALETTERGB(red, green, blue)); + + if (hasMask) + { + // scan the bitmap for the transparent colour and set the corresponding + // pixels in the mask to BLACK and the rest to WHITE + if (maskR == red && maskG == green && maskB == blue) + ::SetPixel(hMaskDC, i, j, PALETTERGB(0, 0, 0)); + else + ::SetPixel(hMaskDC, i, j, PALETTERGB(255, 255, 255)); + } + } + } -void wxBitmap::SetHBITMAP(WXHBITMAP bmp) -{ - if (!M_BITMAPDATA) - m_refData = new wxBitmapRefData; + ::SelectObject(hMemDC, hOldBitmap); + ::DeleteDC(hMemDC); + if (hasMask) + { + ::SelectObject(hMaskDC, hOldMaskBitmap); + ::DeleteDC(hMaskDC); - M_BITMAPDATA->m_hBitmap = bmp; - M_BITMAPDATA->m_ok = bmp != 0; -} + ((wxBitmapRefData*)m_refData)->SetMask(hMaskBitmap); + } -void wxBitmap::AddHandler(wxBitmapHandler *handler) -{ - sm_handlers.Append(handler); -} + SetWidth(image.GetWidth()); + SetHeight(image.GetHeight()); + SetDepth(screenDepth); + SetHBITMAP( (WXHBITMAP) hBitmap ); -void wxBitmap::InsertHandler(wxBitmapHandler *handler) -{ - sm_handlers.Insert(handler); -} +#if wxUSE_PALETTE + // Copy the palette from the source image + SetPalette(image.GetPalette()); +#endif // wxUSE_PALETTE -bool wxBitmap::RemoveHandler(const wxString& name) -{ - wxBitmapHandler *handler = FindHandler(name); - if ( handler ) - { - sm_handlers.DeleteObject(handler); return TRUE; - } - else - return FALSE; } -wxBitmapHandler *wxBitmap::FindHandler(const wxString& name) +wxImage wxBitmap::ConvertToImage() const { - wxNode *node = sm_handlers.First(); - while ( node ) - { - wxBitmapHandler *handler = (wxBitmapHandler *)node->Data(); - if ( (handler->GetName().Cmp(name) == 0) ) - return handler; - node = node->Next(); - } - return NULL; -} + // 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) -wxBitmapHandler *wxBitmap::FindHandler(const wxString& extension, long bitmapType) -{ - wxNode *node = sm_handlers.First(); - while ( node ) - { - wxBitmapHandler *handler = (wxBitmapHandler *)node->Data(); - if ( (handler->GetExtension().Cmp(extension) == 0) && - (bitmapType == -1 || (handler->GetType() == bitmapType)) ) - return handler; - node = node->Next(); - } - return NULL; -} + if (!Ok()) + { + wxFAIL_MSG( wxT("bitmap is invalid") ); + return wxNullImage; + } -wxBitmapHandler *wxBitmap::FindHandler(long bitmapType) -{ - wxNode *node = sm_handlers.First(); - while ( node ) - { - wxBitmapHandler *handler = (wxBitmapHandler *)node->Data(); - if (handler->GetType() == bitmapType) - return handler; - node = node->Next(); - } - return NULL; -} + wxImage image; -// New Create/FreeDIB functions since ones in dibutils.cpp are confusing -static long createDIB(long xSize, long ySize, long bitsPerPixel, - HPALETTE hPal, LPBITMAPINFO* lpDIBHeader); -static long freeDIB(LPBITMAPINFO lpDIBHeader); + wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") ); -// 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 -{ - wxMemoryDC memDC; - wxBitmap tmpBitmap(this->GetWidth(), this->GetHeight(), dc.GetDepth()); - HPALETTE hPal = (HPALETTE) NULL; - LPBITMAPINFO lpDib; - void *lpBits = (void*) NULL; + // create an wxImage object + int width = GetWidth(); + int height = GetHeight(); + image.Create( width, height ); + unsigned char *data = image.GetData(); + if( !data ) + { + wxFAIL_MSG( wxT("could not allocate data for image") ); + return wxNullImage; + } -/* - wxASSERT( this->GetPalette() && this->GetPalette()->Ok() && (this->GetPalette()->GetHPALETTE() != 0) ); + HDC hScreenDC = ::GetDC(NULL); - tmpBitmap.SetPalette(this->GetPalette()); - memDC.SelectObject(tmpBitmap); - memDC.SetPalette(this->GetPalette()); + HDC hMemDC = ::CreateCompatibleDC(hScreenDC); + ::ReleaseDC(NULL, hScreenDC); - hPal = (HPALETTE) this->GetPalette()->GetHPALETTE(); -*/ - if( this->GetPalette() && this->GetPalette()->Ok() && (this->GetPalette()->GetHPALETTE() != 0) ) - { - tmpBitmap.SetPalette(* this->GetPalette()); - memDC.SelectObject(tmpBitmap); - memDC.SetPalette(* this->GetPalette()); - hPal = (HPALETTE) this->GetPalette()->GetHPALETTE(); - } - else - { - hPal = (HPALETTE) ::GetStockObject(DEFAULT_PALETTE); - wxPalette palette; - palette.SetHPALETTE( (WXHPALETTE)hPal ); - tmpBitmap.SetPalette( palette ); - memDC.SelectObject(tmpBitmap); - memDC.SetPalette( palette ); - } + HBITMAP hBitmap = (HBITMAP) GetHBITMAP(); - // set the height negative because in a DIB the order of the lines is reversed - createDIB(this->GetWidth(), -this->GetHeight(), this->GetDepth(), hPal, &lpDib); + HBITMAP hOldBitmap = ::SelectObject(hMemDC, hBitmap); - lpBits = malloc(lpDib->bmiHeader.biSizeImage); + int i, j; + for (i = 0; i < GetWidth(); i++) + { + for (j = 0; j < GetHeight(); j++) + { + COLORREF color = ::GetPixel(hMemDC, i, j); + unsigned char red = GetRValue(color); + unsigned char green = GetGValue(color); + unsigned char blue = GetBValue(color); - ::GetBitmapBits((HBITMAP)GetHBITMAP(), lpDib->bmiHeader.biSizeImage, lpBits); + image.SetRGB(i, j, red, green, blue); + } + } - ::SetDIBitsToDevice((HDC) memDC.GetHDC(), 0, 0, this->GetWidth(), this->GetHeight(), - 0, 0, 0, this->GetHeight(), lpBits, lpDib, DIB_RGB_COLORS); + ::SelectObject(hMemDC, hOldBitmap); + ::DeleteDC(hMemDC); - free(lpBits); +#if wxUSE_PALETTE + // Copy the palette from the source image + if (GetPalette()) + image.SetPalette(* GetPalette()); +#endif // wxUSE_PALETTE - freeDIB(lpDib); - return (tmpBitmap); + return image; } -/* - * wxMask - */ +#endif // __WXMICROWIN__ -wxMask::wxMask() -{ - m_maskBitmap = 0; -} +// ---------------------------------------------------------------------------- +// wxImage to/from conversions +// ---------------------------------------------------------------------------- -// Construct a mask from a bitmap and a colour indicating -// the transparent area -wxMask::wxMask(const wxBitmap& bitmap, const wxColour& colour) +bool wxBitmap::CreateFromImage(const wxImage& image, int depth) { - m_maskBitmap = 0; - Create(bitmap, colour); + return CreateFromImage(image, depth, 0); } -// Construct a mask from a bitmap and a palette index indicating -// the transparent area -wxMask::wxMask(const wxBitmap& bitmap, int paletteIndex) +bool wxBitmap::CreateFromImage(const wxImage& image, const wxDC& dc) { - m_maskBitmap = 0; - Create(bitmap, paletteIndex); + wxCHECK_MSG( dc.Ok(), FALSE, + _T("invalid HDC in wxBitmap::CreateFromImage()") ); + + return CreateFromImage(image, -1, dc.GetHDC()); } -// Construct a mask from a mono bitmap (copies the bitmap). -wxMask::wxMask(const wxBitmap& bitmap) +bool wxBitmap::CreateFromImage(const wxImage& image, int depth, WXHDC hdc ) { - m_maskBitmap = 0; - Create(bitmap); -} +#if wxUSE_WXDIB + wxCHECK_MSG( image.Ok(), FALSE, wxT("invalid image") ); -wxMask::~wxMask() + 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; + + + // store the bitmap parameters + wxBitmapRefData *refData = new wxBitmapRefData; + refData->m_width = w; + refData->m_height = h; + refData->m_hasAlpha = image.HasAlpha(); + + m_refData = refData; + + + // next either store DIB as is or create a DDB from it + HBITMAP hbitmap; + + // are we going to use DIB? + // + // 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_isDIB = TRUE; + refData->m_depth = dib.GetDepth(); + } + else // we need to convert DIB to DDB + { + hbitmap = dib.CreateDDB((HDC)hdc); + + refData->m_depth = depth == -1 ? wxDisplayDepth() : depth; + } + + // validate this object + SetHBITMAP((WXHBITMAP)hbitmap); + + // finally also set the mask if we have one + if ( image.HasMask() ) + { + SetMask(new wxMask(*this, wxColour(image.GetMaskRed(), + image.GetMaskGreen(), + image.GetMaskBlue()))); + } + + return TRUE; +#else + // FIXME: wxWinCE doesn't support wxDIB yet + return FALSE; +#endif +} + +wxImage wxBitmap::ConvertToImage() const { - if ( m_maskBitmap ) - ::DeleteObject((HBITMAP) m_maskBitmap); + // FIXME: this is untested code for WinCE, and + // the mask is not yet handled. + // For tips, see: + // http://www.codeproject.com/bitmap/dibsection.asp?print=true + +#ifdef __WXWINCE__ + // the colour used as transparent one in wxImage and the one it is replaced + // with when it really occurs in the bitmap + static const int MASK_RED = 1; + static const int MASK_GREEN = 2; + static const int MASK_BLUE = 3; + static const int MASK_BLUE_REPLACEMENT = 2; + + wxImage image; + + wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") ); + + // create an wxImage object + int width = GetWidth(); + int height = GetHeight(); + image.Create( width, height ); + unsigned char *data = image.GetData(); + if( !data ) + { + 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 is allocated by CreateDIBSection + void *lpBits = NULL; + + // copy data from the device-dependent bitmap to the DIB + HDC hdc = ::GetDC(NULL); + HBITMAP hBitmap = (HBITMAP) GetHBITMAP(); + + HBITMAP hBitmapSection = ::CreateDIBSection( hdc, lpDIBh, DIB_RGB_COLORS, & lpBits, NULL, 0 ); + if (!hBitmapSection) + { + wxFAIL_MSG( wxT("could not create a DIB section") ); + return wxNullImage; + } + + // Copy the image from the DDB to the DIBSection + // Need to copy the supplied bitmap onto the newly created DIBsection + HDC hMemDC = CreateCompatibleDC(hdc); + HDC hCopyDC = CreateCompatibleDC(hdc); + + if (! hMemDC || ! hCopyDC) + { + wxFAIL_MSG( wxT("unable to create compatible DCs") ); + return wxNullImage; + } + +#if 0 + if (m_hPal) + { + SelectPalette(hMemDC, m_hPal, FALSE); RealizePalette(hMemDC); + SelectPalette(hCopyDC, m_hPal, FALSE); RealizePalette(hCopyDC); + } +#endif + + HBITMAP hOldMemBitmap = (HBITMAP) SelectObject(hMemDC, hBitmap); + HBITMAP hOldCopyBitmap = (HBITMAP) SelectObject(hCopyDC, hBitmapSection); + + BitBlt(hCopyDC, 0, 0, GetWidth(), GetHeight(), hMemDC, 0, 0, SRCCOPY); + + SelectObject(hMemDC, hOldMemBitmap); + SelectObject(hCopyDC, hOldCopyBitmap); + DeleteDC(hMemDC); + DeleteDC(hCopyDC); + +#if 0 + if (m_hPal) + { + HGDIOBJ hObj = ::GetStockObject(DEFAULT_PALETTE); + SelectObject(hMemDC, hObj); + SelectObject(hCopyDC, hObj); + } +#endif + + ReleaseDC(NULL, hdc); + + // copy DIB data into the wxImage object + int i, j; + unsigned char *ptdata = data; + unsigned char *ptbits = (unsigned char*) lpBits; + for( i=0; iGetMaskBitmap() ) + { + 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 ); + ptdata = data; + ptbits = lpBits; + for( i=0; i 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 ) + { + 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() ) + { + 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 ); + ptdata = data; + ptbits = lpBits; + for( i=0; iLoadFile(this, filename, type, -1, -1); + } +#if wxUSE_IMAGE + else + { + wxImage image; + if ( image.LoadFile( filename, type ) && image.Ok() ) + { + *this = wxBitmap(image); + + return TRUE; + } + } +#endif // wxUSE_IMAGE + return FALSE; - } - m_maskBitmap = (WXHBITMAP) CreateBitmap( - bitmap.GetWidth(), - bitmap.GetHeight(), - 1, 1, 0 - ); - HDC srcDC = CreateCompatibleDC(0); - SelectObject(srcDC, (HBITMAP) bitmap.GetHBITMAP()); - HDC destDC = CreateCompatibleDC(0); - SelectObject(destDC, (HBITMAP) m_maskBitmap); - BitBlt(destDC, 0, 0, bitmap.GetWidth(), bitmap.GetHeight(), srcDC, 0, 0, SRCCOPY); - SelectObject(srcDC, 0); - DeleteDC(srcDC); - SelectObject(destDC, 0); - DeleteDC(destDC); - return TRUE; } -// Create a mask from a bitmap and a palette index indicating -// the transparent area -bool wxMask::Create(const wxBitmap& bitmap, int paletteIndex) +bool wxBitmap::Create(void *data, long type, int width, int height, int depth) { - if ( m_maskBitmap ) - { - ::DeleteObject((HBITMAP) m_maskBitmap); - m_maskBitmap = 0; - } - if (bitmap.Ok() && bitmap.GetPalette()->Ok()) - { - unsigned char red, green, blue; - if (bitmap.GetPalette()->GetRGB(paletteIndex, &red, &green, &blue)) + UnRef(); + + wxBitmapHandler *handler = wxDynamicCast(FindHandler(type), wxBitmapHandler); + + if ( !handler ) { - wxColour transparentColour(red, green, blue); - return Create(bitmap, transparentColour); + wxLogDebug(wxT("Failed to create bitmap: no bitmap handler for type %ld defined."), type); + + return FALSE; } - } - return FALSE; + + m_refData = new wxBitmapRefData; + + return handler->Create(this, data, type, width, height, depth); } -// Create a mask from a bitmap and a colour indicating -// the transparent area -bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour) +bool wxBitmap::SaveFile(const wxString& filename, + int type, + const wxPalette *palette) { - if ( m_maskBitmap ) - { - ::DeleteObject((HBITMAP) m_maskBitmap); - m_maskBitmap = 0; - } - if (!bitmap.Ok()) - { + wxBitmapHandler *handler = wxDynamicCast(FindHandler(type), wxBitmapHandler); + + if ( handler ) + { + return handler->SaveFile(this, filename, type, palette); + } +#if wxUSE_IMAGE + else + { + // FIXME what about palette? shouldn't we use it? + wxImage image = ConvertToImage(); + if ( image.Ok() ) + { + return image.SaveFile(filename, type); + } + } +#endif // wxUSE_IMAGE + return FALSE; - } - - // scan the bitmap for the transparent colour and set - // the corresponding pixels in the mask to BLACK and - // the rest to WHITE - COLORREF maskColour = RGB(colour.Red(), colour.Green(), colour.Blue()); - m_maskBitmap = (WXHBITMAP) ::CreateBitmap( - bitmap.GetWidth(), - bitmap.GetHeight(), - 1, 1, 0 - ); - HDC srcDC = ::CreateCompatibleDC(0); - ::SelectObject(srcDC, (HBITMAP) bitmap.GetHBITMAP()); - HDC destDC = ::CreateCompatibleDC(0); - ::SelectObject(destDC, (HBITMAP) m_maskBitmap); - - // this is not very efficient, but I can't think - // of a better way of doing it - for (int w = 0; w < bitmap.GetWidth(); w++) - { - for (int h = 0; h < bitmap.GetHeight(); h++) - { - COLORREF col = GetPixel(srcDC, w, h); - if (col == maskColour) - { - ::SetPixel(destDC, w, h, RGB(0, 0, 0)); - } - else - { - ::SetPixel(destDC, w, h, RGB(255, 255, 255)); - } - } - } - ::SelectObject(srcDC, 0); - ::DeleteDC(srcDC); - ::SelectObject(destDC, 0); - ::DeleteDC(destDC); - return TRUE; -} - -/* - * wxBitmapHandler - */ +} -IMPLEMENT_DYNAMIC_CLASS(wxBitmapHandler, wxObject) +// ---------------------------------------------------------------------------- +// sub bitmap extraction +// ---------------------------------------------------------------------------- -bool wxBitmapHandler::Create(wxBitmap *WXUNUSED(bitmap), void *WXUNUSED(data), long WXUNUSED(type), int WXUNUSED(width), int WXUNUSED(height), int WXUNUSED(depth)) +wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect) const { - return FALSE; + wxCHECK_MSG( Ok() && + (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 ); + wxASSERT_MSG( ret.Ok(), wxT("GetSubBitmap error") ); + +#ifndef __WXMICROWIN__ + // TODO: copy alpha channel data if any + + // copy bitmap data + MemoryHDC dcSrc, + dcDst; + + { + SelectInHDC selectSrc(dcSrc, GetHbitmap()), + selectDst(dcDst, GetHbitmapOf(ret)); + + if ( !selectSrc || !selectDst ) + { + wxLogLastError(_T("SelectObjct(hBitmap)")); + } + + if ( !::BitBlt(dcDst, 0, 0, rect.width, rect.height, + dcSrc, rect.x, rect.y, SRCCOPY) ) + { + wxLogLastError(_T("BitBlt")); + } + } + + // copy mask if there is one + if ( GetMask() ) + { + HBITMAP hbmpMask = ::CreateBitmap(rect.width, rect.height, 1, 1, 0); + + SelectInHDC selectSrc(dcSrc, (HBITMAP) GetMask()->GetMaskBitmap()), + selectDst(dcDst, hbmpMask); + + if ( !::BitBlt(dcDst, 0, 0, rect.width, rect.height, + dcSrc, rect.x, rect.y, SRCCOPY) ) + { + wxLogLastError(_T("BitBlt")); + } + + wxMask *mask = new wxMask((WXHBITMAP) hbmpMask); + ret.SetMask(mask); + } +#endif // !__WXMICROWIN__ + + return ret; } -bool wxBitmapHandler::LoadFile(wxBitmap *WXUNUSED(bitmap), const wxString& WXUNUSED(name), long WXUNUSED(type), - int WXUNUSED(desiredWidth), int WXUNUSED(desiredHeight)) +// ---------------------------------------------------------------------------- +// wxBitmap accessors +// ---------------------------------------------------------------------------- + +#if wxUSE_PALETTE +wxPalette* wxBitmap::GetPalette() const { - return FALSE; + return GetBitmapData() ? &GetBitmapData()->m_bitmapPalette + : (wxPalette *) NULL; } +#endif -bool wxBitmapHandler::SaveFile(wxBitmap *WXUNUSED(bitmap), const wxString& WXUNUSED(name), int WXUNUSED(type), const wxPalette *WXUNUSED(palette)) +wxMask *wxBitmap::GetMask() const { - return FALSE; + return GetBitmapData() ? GetBitmapData()->GetMask() : (wxMask *) NULL; } -/* - * Standard handlers - */ +#ifdef __WXDEBUG__ -class WXDLLEXPORT wxBMPResourceHandler: public wxBitmapHandler +wxDC *wxBitmap::GetSelectedInto() const { - DECLARE_DYNAMIC_CLASS(wxBMPResourceHandler) -public: - inline wxBMPResourceHandler() - { - m_name = "Windows bitmap resource"; - m_extension = ""; - m_type = wxBITMAP_TYPE_BMP_RESOURCE; - }; - - virtual bool LoadFile(wxBitmap *bitmap, const wxString& name, long flags, - int desiredWidth, int desiredHeight); -}; -IMPLEMENT_DYNAMIC_CLASS(wxBMPResourceHandler, wxBitmapHandler) + return GetBitmapData() ? GetBitmapData()->m_selectedInto : (wxDC *) NULL; +} + +#endif + +#if WXWIN_COMPATIBILITY_2_4 + +int wxBitmap::GetQuality() const +{ + return 0; +} + +#endif // WXWIN_COMPATIBILITY_2_4 + +void wxBitmap::UseAlpha() +{ + if ( GetBitmapData() ) + GetBitmapData()->m_hasAlpha = true; +} + +bool wxBitmap::HasAlpha() const +{ + return GetBitmapData() && GetBitmapData()->m_hasAlpha; +} + +// ---------------------------------------------------------------------------- +// wxBitmap setters +// ---------------------------------------------------------------------------- -bool wxBMPResourceHandler::LoadFile(wxBitmap *bitmap, const wxString& name, long WXUNUSED(flags), - int WXUNUSED(desiredWidth), int WXUNUSED(desiredHeight)) +#ifdef __WXDEBUG__ + +void wxBitmap::SetSelectedInto(wxDC *dc) { - // TODO: load colourmap. - M_BITMAPHANDLERDATA->m_hBitmap = (WXHBITMAP) ::LoadBitmap(wxGetInstance(), name); - if (M_BITMAPHANDLERDATA->m_hBitmap) + if ( GetBitmapData() ) + GetBitmapData()->m_selectedInto = dc; +} + +#endif + +#if wxUSE_PALETTE + +void wxBitmap::SetPalette(const wxPalette& palette) +{ + EnsureHasData(); + + GetBitmapData()->m_bitmapPalette = palette; +} + +#endif // wxUSE_PALETTE + +void wxBitmap::SetMask(wxMask *mask) +{ + EnsureHasData(); + + GetBitmapData()->SetMask(mask); +} + +#if WXWIN_COMPATIBILITY_2_4 + +void wxBitmap::SetQuality(int WXUNUSED(quality)) +{ +} + +#endif // WXWIN_COMPATIBILITY_2_4 + +// ---------------------------------------------------------------------------- +// raw bitmap access support +// ---------------------------------------------------------------------------- + +#ifdef wxHAVE_RAW_BITMAP +void *wxBitmap::GetRawData(wxPixelDataBase& data, int bpp) +{ +#if wxUSE_WXDIB + if ( !Ok() ) { - M_BITMAPHANDLERDATA->m_ok = TRUE; - BITMAP bm; - GetObject((HBITMAP) M_BITMAPHANDLERDATA->m_hBitmap, sizeof(BITMAP), (LPSTR) &bm); - M_BITMAPHANDLERDATA->m_width = bm.bmWidth; - M_BITMAPHANDLERDATA->m_height = bm.bmHeight; - M_BITMAPHANDLERDATA->m_depth = bm.bmBitsPixel; + // no bitmap, no data (raw or otherwise) + 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, FALSE, + _T("GetRawData() may be called only once") ); - if ( bitmap->IsKindOf(CLASSINFO(wxIcon)) ) + wxDIB *dib = new wxDIB(*this); + if ( !dib->IsOk() ) { + delete dib; + + return NULL; } - return TRUE; + // we'll free it in UngetRawData() + GetBitmapData()->m_dib = dib; + + hDIB = dib->GetHandle(); + } + else // we're a DIB + { + hDIB = GetHbitmap(); + } + + DIBSECTION ds; + if ( ::GetObject(hDIB, sizeof(ds), &ds) != sizeof(DIBSECTION) ) + { + wxFAIL_MSG( _T("failed to get DIBSECTION from a DIB?") ); + + return NULL; + } + + // check that the bitmap is in correct format + if ( ds.dsBm.bmBitsPixel != bpp ) + { + wxFAIL_MSG( _T("incorrect bitmap type in wxBitmap::GetRawData()") ); + + return NULL; } - // it's probably not found - wxLogError(wxT("Can't load bitmap '%s' from resources! Check .rc file."), name.c_str()); + // ok, store the relevant info in wxPixelDataBase + const LONG h = ds.dsBm.bmHeight; + + data.m_width = ds.dsBm.bmWidth; + data.m_height = h; - return FALSE; + // remember that DIBs are stored in top to bottom order! + const LONG bytesPerRow = ds.dsBm.bmWidthBytes; + data.m_stride = -bytesPerRow; + + char *bits = (char *)ds.dsBm.bmBits; + if ( h > 1 ) + { + bits += (h - 1)*bytesPerRow; + } + + return bits; +#else + return NULL; +#endif } -class WXDLLEXPORT wxBMPFileHandler: public wxBitmapHandler +void wxBitmap::UngetRawData(wxPixelDataBase& dataBase) { - DECLARE_DYNAMIC_CLASS(wxBMPFileHandler) -public: - inline wxBMPFileHandler() - { - m_name = "Windows bitmap file"; - m_extension = "bmp"; - m_type = wxBITMAP_TYPE_BMP; - }; - - virtual bool LoadFile(wxBitmap *bitmap, const wxString& name, long flags, - int desiredWidth, int desiredHeight); - virtual bool SaveFile(wxBitmap *bitmap, const wxString& name, int type, const wxPalette *palette = NULL); -}; -IMPLEMENT_DYNAMIC_CLASS(wxBMPFileHandler, wxBitmapHandler) +#if wxUSE_WXDIB + if ( !Ok() ) + return; -bool wxBMPFileHandler::LoadFile(wxBitmap *bitmap, const wxString& name, long WXUNUSED(flags), - int WXUNUSED(desiredWidth), int WXUNUSED(desiredHeight)) -{ -#if wxUSE_IMAGE_LOADING_IN_MSW - wxPalette *palette = NULL; - bool success = FALSE; -/* - if (type & wxBITMAP_DISCARD_COLOURMAP) - success = wxLoadIntoBitmap(WXSTRINGCAST name, bitmap); - else -*/ - success = (wxLoadIntoBitmap(WXSTRINGCAST name, bitmap, &palette) != 0); - if (!success && palette) + // the cast is ugly but we can't do without it and without making this + // function template (and hence inline) unfortunately + typedef wxPixelData PixelData; + PixelData& data = (PixelData &)dataBase; + + if ( !data ) { - delete palette; - palette = NULL; + // 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 (palette) + + if ( GetBitmapData()->m_hasAlpha ) { - M_BITMAPHANDLERDATA->m_bitmapPalette = *palette; - delete palette; + // AlphaBlend() wants to have premultiplied source alpha but + // wxRawBitmap API uses normal, not premultiplied, colours, so adjust + // them here now + PixelData::Iterator p(data); + + const int w = data.GetWidth(); + const int h = data.GetHeight(); + + for ( int y = 0; y < h; y++ ) + { + PixelData::Iterator rowStart = p; + + for ( int x = 0; x < w; x++ ) + { + const unsigned alpha = p.Alpha(); + + p.Red() = (p.Red() * alpha + 127) / 255; + p.Blue() = (p.Blue() * alpha + 127) / 255; + p.Green() = (p.Green() * alpha + 127) / 255; + + ++p; + } + + p = rowStart; + p.OffsetY(data, 1); + } } - return success; -#else - return FALSE; -#endif + + // 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 // #ifdef wxHAVE_RAW_BITMAP + +// ---------------------------------------------------------------------------- +// wxMask +// ---------------------------------------------------------------------------- -bool wxBMPFileHandler::SaveFile(wxBitmap *bitmap, const wxString& name, int WXUNUSED(type), const wxPalette *pal) +wxMask::wxMask() { -#if wxUSE_IMAGE_LOADING_IN_MSW - wxPalette *actualPalette = (wxPalette *)pal; - if (!actualPalette && (!M_BITMAPHANDLERDATA->m_bitmapPalette.IsNull())) - actualPalette = & (M_BITMAPHANDLERDATA->m_bitmapPalette); - return (wxSaveBitmap(WXSTRINGCAST name, bitmap, actualPalette) != 0); + m_maskBitmap = 0; +} + +// Construct a mask from a bitmap and a colour indicating +// the transparent area +wxMask::wxMask(const wxBitmap& bitmap, const wxColour& colour) +{ + m_maskBitmap = 0; + Create(bitmap, colour); +} + +// Construct a mask from a bitmap and a palette index indicating +// the transparent area +wxMask::wxMask(const wxBitmap& bitmap, int paletteIndex) +{ + m_maskBitmap = 0; + Create(bitmap, paletteIndex); +} + +// Construct a mask from a mono bitmap (copies the bitmap). +wxMask::wxMask(const wxBitmap& bitmap) +{ + m_maskBitmap = 0; + Create(bitmap); +} + +wxMask::~wxMask() +{ + if ( m_maskBitmap ) + ::DeleteObject((HBITMAP) m_maskBitmap); +} + +// Create a mask from a mono bitmap (copies the bitmap). +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") ); + + if ( m_maskBitmap ) + { + ::DeleteObject((HBITMAP) m_maskBitmap); + m_maskBitmap = 0; + } + + m_maskBitmap = (WXHBITMAP) CreateBitmap( + bitmap.GetWidth(), + bitmap.GetHeight(), + 1, 1, 0 + ); + HDC srcDC = CreateCompatibleDC(0); + SelectObject(srcDC, (HBITMAP) bitmap.GetHBITMAP()); + HDC destDC = CreateCompatibleDC(0); + SelectObject(destDC, (HBITMAP) m_maskBitmap); + BitBlt(destDC, 0, 0, bitmap.GetWidth(), bitmap.GetHeight(), srcDC, 0, 0, SRCCOPY); + SelectObject(srcDC, 0); + DeleteDC(srcDC); + SelectObject(destDC, 0); + DeleteDC(destDC); + return TRUE; #else - return FALSE; + return FALSE; #endif } -void wxBitmap::CleanUpHandlers() +// Create a mask from a bitmap and a palette index indicating +// the transparent area +bool wxMask::Create(const wxBitmap& bitmap, int paletteIndex) +{ + if ( m_maskBitmap ) + { + ::DeleteObject((HBITMAP) m_maskBitmap); + m_maskBitmap = 0; + } + +#if wxUSE_PALETTE + if (bitmap.Ok() && bitmap.GetPalette()->Ok()) + { + unsigned char red, green, blue; + if (bitmap.GetPalette()->GetRGB(paletteIndex, &red, &green, &blue)) + { + wxColour transparentColour(red, green, blue); + return Create(bitmap, transparentColour); + } + } +#endif // wxUSE_PALETTE + + return FALSE; +} + +// Create a mask from a bitmap and a colour indicating +// the transparent area +bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour) { - wxNode *node = sm_handlers.First(); - while ( node ) - { - wxBitmapHandler *handler = (wxBitmapHandler *)node->Data(); - wxNode *next = node->Next(); - delete handler; - delete node; - node = next; - } +#ifndef __WXMICROWIN__ + wxCHECK_MSG( bitmap.Ok(), FALSE, _T("invalid bitmap in wxMask::Create") ); + + if ( m_maskBitmap ) + { + ::DeleteObject((HBITMAP) m_maskBitmap); + m_maskBitmap = 0; + } + + int width = bitmap.GetWidth(), + height = bitmap.GetHeight(); + + // scan the bitmap for the transparent colour and set the corresponding + // pixels in the mask to BLACK and the rest to WHITE + COLORREF maskColour = wxColourToPalRGB(colour); + m_maskBitmap = (WXHBITMAP)::CreateBitmap(width, height, 1, 1, 0); + + HDC srcDC = ::CreateCompatibleDC(NULL); + HDC destDC = ::CreateCompatibleDC(NULL); + if ( !srcDC || !destDC ) + { + wxLogLastError(wxT("CreateCompatibleDC")); + } + + bool ok = TRUE; + + // SelectObject() will fail + wxASSERT_MSG( !bitmap.GetSelectedInto(), + _T("bitmap can't be selected in another DC") ); + + HGDIOBJ hbmpSrcOld = ::SelectObject(srcDC, GetHbitmapOf(bitmap)); + if ( !hbmpSrcOld ) + { + wxLogLastError(wxT("SelectObject")); + + ok = FALSE; + } + + HGDIOBJ hbmpDstOld = ::SelectObject(destDC, (HBITMAP)m_maskBitmap); + if ( !hbmpDstOld ) + { + wxLogLastError(wxT("SelectObject")); + + ok = FALSE; + } + + if ( ok ) + { + // this will create a monochrome bitmap with 0 points for the pixels + // which have the same value as the background colour and 1 for the + // others + ::SetBkColor(srcDC, maskColour); + ::BitBlt(destDC, 0, 0, width, height, srcDC, 0, 0, NOTSRCCOPY); + } + + ::SelectObject(srcDC, hbmpSrcOld); + ::DeleteDC(srcDC); + ::SelectObject(destDC, hbmpDstOld); + ::DeleteDC(destDC); + + return ok; +#else // __WXMICROWIN__ + return FALSE; +#endif // __WXMICROWIN__/!__WXMICROWIN__ } -void wxBitmap::InitStandardHandlers() +// ---------------------------------------------------------------------------- +// wxBitmapHandler +// ---------------------------------------------------------------------------- + +bool wxBitmapHandler::Create(wxGDIImage *image, + void *data, + long flags, + int width, int height, int depth) { - AddHandler(new wxBMPResourceHandler); - AddHandler(new wxBMPFileHandler); + wxBitmap *bitmap = wxDynamicCast(image, wxBitmap); + + return bitmap ? Create(bitmap, data, flags, width, height, depth) : FALSE; +} - // Not added by default: include xpmhand.h in your app - // and call these in your wxApp::OnInit. -// AddHandler(new wxXPMFileHandler); -// AddHandler(new wxXPMDataHandler); +bool wxBitmapHandler::Load(wxGDIImage *image, + const wxString& name, + long flags, + int width, int height) +{ + wxBitmap *bitmap = wxDynamicCast(image, wxBitmap); - AddHandler(new wxICOResourceHandler); - AddHandler(new wxICOFileHandler); + return bitmap ? LoadFile(bitmap, name, flags, width, height) : FALSE; } -static long createDIB(long xSize, long ySize, long bitsPerPixel, - HPALETTE hPal, LPBITMAPINFO* lpDIBHeader) +bool wxBitmapHandler::Save(wxGDIImage *image, + const wxString& name, + int type) { - unsigned long i, headerSize; - LPBITMAPINFO lpDIBheader = NULL; - LPPALETTEENTRY lpPe = NULL; + wxBitmap *bitmap = wxDynamicCast(image, wxBitmap); + return bitmap ? SaveFile(bitmap, name, type) : FALSE; +} + +bool wxBitmapHandler::Create(wxBitmap *WXUNUSED(bitmap), + void *WXUNUSED(data), + long WXUNUSED(type), + int WXUNUSED(width), + int WXUNUSED(height), + int WXUNUSED(depth)) +{ + return FALSE; +} + +bool wxBitmapHandler::LoadFile(wxBitmap *WXUNUSED(bitmap), + const wxString& WXUNUSED(name), + long WXUNUSED(type), + int WXUNUSED(desiredWidth), + int WXUNUSED(desiredHeight)) +{ + return FALSE; +} + +bool wxBitmapHandler::SaveFile(wxBitmap *WXUNUSED(bitmap), + const wxString& WXUNUSED(name), + int WXUNUSED(type), + const wxPalette *WXUNUSED(palette)) +{ + return FALSE; +} + +// ---------------------------------------------------------------------------- +// DIB functions +// ---------------------------------------------------------------------------- + +#ifndef __WXMICROWIN__ +bool wxCreateDIB(long xSize, long ySize, long bitsPerPixel, + HPALETTE hPal, LPBITMAPINFO* lpDIBHeader) +{ + unsigned long i, headerSize; // 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); - memset(lpDIBheader, 0x00, sizeof(BITMAPINFOHEADER)); - // Fill in the static parts of the DIB header lpDIBheader->bmiHeader.biSize = sizeof(BITMAPINFOHEADER); lpDIBheader->bmiHeader.biWidth = xSize; @@ -823,8 +1777,7 @@ static long createDIB(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; @@ -838,21 +1791,136 @@ static long createDIB(long xSize, long ySize, long bitsPerPixel, *lpDIBHeader = lpDIBheader; + return TRUE; +} + +void wxFreeDIB(LPBITMAPINFO lpDIBHeader) +{ + free(lpDIBHeader); +} +#endif + +// ---------------------------------------------------------------------------- +// global helper functions implemented here +// ---------------------------------------------------------------------------- + +// helper of wxBitmapToHICON/HCURSOR +static +HICON wxBitmapToIconOrCursor(const wxBitmap& bmp, + bool iconWanted, + int hotSpotX, + int hotSpotY) +{ + if ( !bmp.Ok() ) + { + // we can't create an icon/cursor form nothing + return 0; + } + + wxMask *mask = bmp.GetMask(); + 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; + } + + iconInfo.hbmMask = wxInvertMask((HBITMAP)mask->GetMaskBitmap()); + iconInfo.hbmColor = GetHbitmapOf(bmp); + + // 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); + + if ( !::BitBlt(dcDst, 0, 0, bmp.GetWidth(), bmp.GetHeight(), + dcSrc, 0, 0, SRCAND) ) + { + wxLogLastError(_T("BitBlt")); + } + } + + HICON hicon = ::CreateIconIndirect(&iconInfo); + + if ( !bmp.GetMask() ) + { + // we created the mask, now delete it + delete mask; + } - return (0); + // delete the inverted mask bitmap we created as well + ::DeleteObject(iconInfo.hbmMask); + return hicon; } +HICON wxBitmapToHICON(const wxBitmap& bmp) +{ + return wxBitmapToIconOrCursor(bmp, TRUE, 0, 0); +} +HCURSOR wxBitmapToHCURSOR(const wxBitmap& bmp, int hotSpotX, int hotSpotY) +{ + return (HCURSOR)wxBitmapToIconOrCursor(bmp, FALSE, hotSpotX, hotSpotY); +} -static long freeDIB(LPBITMAPINFO lpDIBHeader) +HBITMAP wxInvertMask(HBITMAP hbmpMask, int w, int h) { +#ifndef __WXMICROWIN__ + wxCHECK_MSG( hbmpMask, 0, _T("invalid bitmap in wxInvertMask") ); - if (lpDIBHeader != NULL) { - free(lpDIBHeader); - } + // get width/height from the bitmap if not given + if ( !w || !h ) + { + BITMAP bm; + ::GetObject(hbmpMask, sizeof(BITMAP), (LPVOID)&bm); + w = bm.bmWidth; + h = bm.bmHeight; + } - return (0); -} + HDC hdcSrc = ::CreateCompatibleDC(NULL); + HDC hdcDst = ::CreateCompatibleDC(NULL); + if ( !hdcSrc || !hdcDst ) + { + wxLogLastError(wxT("CreateCompatibleDC")); + } + HBITMAP hbmpInvMask = ::CreateBitmap(w, h, 1, 1, 0); + if ( !hbmpInvMask ) + { + wxLogLastError(wxT("CreateBitmap")); + } + HGDIOBJ srcTmp = ::SelectObject(hdcSrc, hbmpMask); + HGDIOBJ dstTmp = ::SelectObject(hdcDst, hbmpInvMask); + if ( !::BitBlt(hdcDst, 0, 0, w, h, + hdcSrc, 0, 0, + NOTSRCCOPY) ) + { + wxLogLastError(wxT("BitBlt")); + } + + // Deselect objects + SelectObject(hdcSrc,srcTmp); + SelectObject(hdcDst,dstTmp); + + ::DeleteDC(hdcSrc); + ::DeleteDC(hdcDst); + + return hbmpInvMask; +#else + return 0; +#endif +}