X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/e02afc7a273702ca567431b209415b7bd2b290d0..399b60a0ad232265cd74ce8bf6a53a1f2cc57ff2:/src/common/image.cpp diff --git a/src/common/image.cpp b/src/common/image.cpp index e749f5d39d..5f61154db2 100644 --- a/src/common/image.cpp +++ b/src/common/image.cpp @@ -15,7 +15,7 @@ #include "wx/wxprec.h" #ifdef __BORLANDC__ -#pragma hdrstop + #pragma hdrstop #endif #include "wx/image.h" @@ -23,21 +23,21 @@ #include "wx/debug.h" #include "wx/log.h" #include "wx/app.h" -#ifdef wxUSE_LIBPNG -#include "../png/png.h" -#endif #include "wx/filefn.h" #include "wx/wfstream.h" #include "wx/intl.h" +#include "wx/module.h" + +// For memcpy +#include +#include #ifdef __SALFORDC__ -#ifdef FAR -#undef FAR -#endif + #undef FAR #endif #ifdef __WXMSW__ -#include + #include "wx/msw/private.h" #endif //----------------------------------------------------------------------------- @@ -46,20 +46,19 @@ class wxImageRefData: public wxObjectRefData { - public: - wxImageRefData(void); - ~wxImageRefData(void); - - int m_width; - int m_height; - unsigned char *m_data; - bool m_hasMask; - unsigned char m_maskRed,m_maskGreen,m_maskBlue; - bool m_ok; + wxImageRefData(); + ~wxImageRefData(); + + int m_width; + int m_height; + unsigned char *m_data; + bool m_hasMask; + unsigned char m_maskRed,m_maskGreen,m_maskBlue; + bool m_ok; }; -wxImageRefData::wxImageRefData(void) +wxImageRefData::wxImageRefData() { m_width = 0; m_height = 0; @@ -71,9 +70,10 @@ wxImageRefData::wxImageRefData(void) m_hasMask = FALSE; } -wxImageRefData::~wxImageRefData(void) +wxImageRefData::~wxImageRefData() { - if (m_data) free( m_data ); + if (m_data) + free( m_data ); } wxList wxImage::sm_handlers; @@ -82,9 +82,7 @@ wxList wxImage::sm_handlers; #define M_IMGDATA ((wxImageRefData *)m_refData) -#if !USE_SHARED_LIBRARIES -IMPLEMENT_DYNAMIC_CLASS(wxImage, wxObject) -#endif + IMPLEMENT_DYNAMIC_CLASS(wxImage, wxObject) wxImage::wxImage() { @@ -100,11 +98,21 @@ wxImage::wxImage( const wxString& name, long type ) LoadFile( name, type ); } +wxImage::wxImage( const wxString& name, const wxString& mimetype ) +{ + LoadFile( name, mimetype ); +} + #if wxUSE_STREAMS wxImage::wxImage( wxInputStream& stream, long type ) { LoadFile( stream, type ); } + +wxImage::wxImage( wxInputStream& stream, const wxString& mimetype ) +{ + LoadFile( stream, mimetype ); +} #endif // wxUSE_STREAMS wxImage::wxImage( const wxImage& image ) @@ -119,6 +127,8 @@ wxImage::wxImage( const wxImage* image ) void wxImage::Create( int width, int height ) { + UnRef(); + m_refData = new wxImageRefData(); M_IMGDATA->m_data = (unsigned char *) malloc( width*height*3 ); @@ -141,49 +151,113 @@ void wxImage::Destroy() UnRef(); } -wxImage wxImage::Scale( int width, int height ) +wxImage wxImage::Scale( int width, int height ) const { wxImage image; - wxCHECK_MSG( Ok(), image, "invlaid image" ); + wxCHECK_MSG( Ok(), image, wxT("invalid image") ); - wxCHECK_MSG( (width > 0) && (height > 0), image, "invalid image size" ); + wxCHECK_MSG( (width > 0) && (height > 0), image, wxT("invalid image size") ); image.Create( width, height ); char unsigned *data = image.GetData(); - wxCHECK_MSG( data, image, "unable to create image" ); + wxCHECK_MSG( data, image, wxT("unable to create image") ); if (M_IMGDATA->m_hasMask) image.SetMaskColour( M_IMGDATA->m_maskRed, M_IMGDATA->m_maskGreen, M_IMGDATA->m_maskBlue ); - double xscale = (double)width / (double)M_IMGDATA->m_width; - double yscale = (double)height / (double)M_IMGDATA->m_height; + long old_height = M_IMGDATA->m_height; + long old_width = M_IMGDATA->m_width; - for (int j = 0; j < height; j++) + char unsigned *source_data = M_IMGDATA->m_data; + char unsigned *target_data = data; + + for (long j = 0; j < height; j++) { - for (int i = 0; i < width; i++) + long y_offset = (j * old_height / height) * old_width; + + for (long i = 0; i < width; i++) { - int new_pos = 3*(j*width + i); - int old_pos = 3*((long)(j/yscale)*M_IMGDATA->m_width + (long)(i/xscale)); - data[ new_pos ] = M_IMGDATA->m_data[ old_pos ]; - data[ new_pos+1 ] = M_IMGDATA->m_data[ old_pos+1 ]; - data[ new_pos+2 ] = M_IMGDATA->m_data[ old_pos+2 ]; + memcpy( target_data, + source_data + 3*(y_offset + ((i * old_width )/ width)), + 3 ); + target_data += 3; } } return image; } +wxImage wxImage::GetSubImage( const wxRect &rect ) const +{ + wxImage image; + + wxCHECK_MSG( Ok(), image, wxT("invalid image") ); + + wxCHECK_MSG( (rect.GetLeft()>=0) && (rect.GetTop()>=0) && (rect.GetRight()<=GetWidth()) && (rect.GetBottom()<=GetHeight()), + image, wxT("invalid subimage size") ); + + int subwidth=rect.GetWidth(); + const int subheight=rect.GetHeight(); + + image.Create( subwidth, subheight ); + + char unsigned *subdata = image.GetData(), *data=GetData(); + + wxCHECK_MSG( subdata, image, wxT("unable to create image") ); + + if (M_IMGDATA->m_hasMask) + image.SetMaskColour( M_IMGDATA->m_maskRed, M_IMGDATA->m_maskGreen, M_IMGDATA->m_maskBlue ); + + const int subleft=3*rect.GetLeft(); + const int width=3*GetWidth(); + subwidth*=3; + + data+=rect.GetTop()*width+subleft; + + for (long j = 0; j < subheight; ++j) + { + memcpy( subdata, data, subwidth); + subdata+=subwidth; + data+=width; + } + + return image; +} + +void wxImage::Replace( unsigned char r1, unsigned char g1, unsigned char b1, + unsigned char r2, unsigned char g2, unsigned char b2 ) +{ + wxCHECK_RET( Ok(), wxT("invalid image") ); + + char unsigned *data = GetData(); + + const int w = GetWidth(); + const int h = GetHeight(); + + for (int j = 0; j < h; j++) + for (int i = 0; i < w; i++) + { + if ((data[0] == r1) && (data[1] == g1) && (data[2] == b1)) + { + data[0] = r2; + data[1] = g2; + data[2] = b2; + } + data += 3; + } +} + void wxImage::SetRGB( int x, int y, unsigned char r, unsigned char g, unsigned char b ) { - wxCHECK_RET( Ok(), "invalid image" ); + wxCHECK_RET( Ok(), wxT("invalid image") ); int w = M_IMGDATA->m_width; int h = M_IMGDATA->m_height; - wxCHECK_RET( (x>=0) && (y>=0) && (x=0) && (y>=0) && (xm_width; int h = M_IMGDATA->m_height; - wxCHECK_MSG( (x>=0) && (y>=0) && (x=0) && (y>=0) && (xm_width; int h = M_IMGDATA->m_height; - wxCHECK_MSG( (x>=0) && (y>=0) && (x=0) && (y>=0) && (xm_width; int h = M_IMGDATA->m_height; - wxCHECK_MSG( (x>=0) && (y>=0) && (x=0) && (y>=0) && (xm_data; } -void wxImage::SetData( char unsigned *WXUNUSED(data) ) +void wxImage::SetData( char unsigned *data ) { - wxCHECK_RET( Ok(), "invalid image" ); + wxCHECK_RET( Ok(), wxT("invalid image") ); + + wxImageRefData *newRefData = new wxImageRefData(); + + newRefData->m_width = M_IMGDATA->m_width; + newRefData->m_height = M_IMGDATA->m_height; + newRefData->m_data = data; + newRefData->m_ok = TRUE; + newRefData->m_maskRed = M_IMGDATA->m_maskRed; + newRefData->m_maskGreen = M_IMGDATA->m_maskGreen; + newRefData->m_maskBlue = M_IMGDATA->m_maskBlue; + newRefData->m_hasMask = M_IMGDATA->m_hasMask; + + UnRef(); + + m_refData = newRefData; } void wxImage::SetMaskColour( unsigned char r, unsigned char g, unsigned char b ) { - wxCHECK_RET( Ok(), "invalid image" ); + wxCHECK_RET( Ok(), wxT("invalid image") ); M_IMGDATA->m_maskRed = r; M_IMGDATA->m_maskGreen = g; @@ -263,49 +352,49 @@ void wxImage::SetMaskColour( unsigned char r, unsigned char g, unsigned char b ) unsigned char wxImage::GetMaskRed() const { - wxCHECK_MSG( Ok(), 0, "invalid image" ); + wxCHECK_MSG( Ok(), 0, wxT("invalid image") ); return M_IMGDATA->m_maskRed; } unsigned char wxImage::GetMaskGreen() const { - wxCHECK_MSG( Ok(), 0, "invalid image" ); + wxCHECK_MSG( Ok(), 0, wxT("invalid image") ); return M_IMGDATA->m_maskGreen; } unsigned char wxImage::GetMaskBlue() const { - wxCHECK_MSG( Ok(), 0, "invalid image" ); + wxCHECK_MSG( Ok(), 0, wxT("invalid image") ); return M_IMGDATA->m_maskBlue; } void wxImage::SetMask( bool mask ) { - wxCHECK_RET( Ok(), "invalid image" ); + wxCHECK_RET( Ok(), wxT("invalid image") ); M_IMGDATA->m_hasMask = mask; } bool wxImage::HasMask() const { - wxCHECK_MSG( Ok(), FALSE, "invalid image" ); + wxCHECK_MSG( Ok(), FALSE, wxT("invalid image") ); return M_IMGDATA->m_hasMask; } int wxImage::GetWidth() const { - wxCHECK_MSG( Ok(), 0, "invalid image" ); + wxCHECK_MSG( Ok(), 0, wxT("invalid image") ); return M_IMGDATA->m_width; } int wxImage::GetHeight() const { - wxCHECK_MSG( Ok(), 0, "invalid image" ); + wxCHECK_MSG( Ok(), 0, wxT("invalid image") ); return M_IMGDATA->m_height; } @@ -316,16 +405,37 @@ bool wxImage::LoadFile( const wxString& filename, long type ) if (wxFileExists(filename)) { wxFileInputStream stream(filename); - return LoadFile(stream, type); + wxBufferedInputStream bstream( stream ); + return LoadFile(bstream, type); } - - else { - wxLogError( "Can't load image from file '%s': file does not exist.", filename.c_str() ); + else + { + wxLogError( _("Can't load image from file '%s': file does not exist."), filename.c_str() ); return FALSE; } #else // !wxUSE_STREAMS + return FALSE; +#endif // wxUSE_STREAMS +} + +bool wxImage::LoadFile( const wxString& filename, const wxString& mimetype ) +{ +#if wxUSE_STREAMS + if (wxFileExists(filename)) + { + wxFileInputStream stream(filename); + wxBufferedInputStream bstream( stream ); + return LoadFile(bstream, mimetype); + } + else + { + wxLogError( _("Can't load image from file '%s': file does not exist."), filename.c_str() ); + return FALSE; + } +#else // !wxUSE_STREAMS + return FALSE; #endif // wxUSE_STREAMS } @@ -335,24 +445,103 @@ bool wxImage::SaveFile( const wxString& filename, int type ) wxFileOutputStream stream(filename); if ( stream.LastError() == wxStream_NOERROR ) - return SaveFile(stream, type); + { + wxBufferedOutputStream bstream( stream ); + return SaveFile(bstream, type); + } + else +#endif // wxUSE_STREAMS + return FALSE; +} + +bool wxImage::SaveFile( const wxString& filename, const wxString& mimetype ) +{ +#if wxUSE_STREAMS + wxFileOutputStream stream(filename); + + if ( stream.LastError() == wxStream_NOERROR ) + { + wxBufferedOutputStream bstream( stream ); + return SaveFile(bstream, mimetype); + } else #endif // wxUSE_STREAMS return FALSE; } +bool wxImage::CanRead( const wxString &name ) +{ +#if wxUSE_STREAMS + wxFileInputStream stream(name); + return CanRead(stream); +#else + return FALSE; +#endif +} + #if wxUSE_STREAMS + +bool wxImage::CanRead( wxInputStream &stream ) +{ + wxList &list=GetHandlers(); + + for ( wxList::Node *node = list.GetFirst(); node; node = node->GetNext() ) + { + wxImageHandler *handler=(wxImageHandler*)node->GetData(); + if (handler->CanRead( stream )) + return TRUE; + } + + return FALSE; +} + bool wxImage::LoadFile( wxInputStream& stream, long type ) { UnRef(); m_refData = new wxImageRefData; - wxImageHandler *handler = FindHandler(type); + wxImageHandler *handler; + + if (type==wxBITMAP_TYPE_ANY) + { + wxList &list=GetHandlers(); + + for ( wxList::Node *node = list.GetFirst(); node; node = node->GetNext() ) + { + handler=(wxImageHandler*)node->GetData(); + if (handler->CanRead( stream )) + return handler->LoadFile( this, stream ); + + } + + wxLogWarning( _("No handler found for image type.") ); + return FALSE; + } + + handler = FindHandler(type); + + if (handler == NULL) + { + wxLogWarning( _("No image handler for type %d defined."), type ); + + return FALSE; + } + + return handler->LoadFile( this, stream ); +} + +bool wxImage::LoadFile( wxInputStream& stream, const wxString& mimetype ) +{ + UnRef(); + + m_refData = new wxImageRefData; + + wxImageHandler *handler = FindHandlerMime(mimetype); if (handler == NULL) { - wxLogWarning( "No image handler for type %d defined.", type ); + wxLogWarning( _("No image handler for type %s defined."), mimetype.GetData() ); return FALSE; } @@ -362,15 +551,31 @@ bool wxImage::LoadFile( wxInputStream& stream, long type ) bool wxImage::SaveFile( wxOutputStream& stream, int type ) { - wxCHECK_MSG( Ok(), FALSE, "invalid image" ); + wxCHECK_MSG( Ok(), FALSE, wxT("invalid image") ); wxImageHandler *handler = FindHandler(type); if (handler == NULL) { - wxLogWarning( "No image handler for type %d defined.", type ); + wxLogWarning( _("No image handler for type %d defined."), type ); + + return FALSE; + } + + return handler->SaveFile( this, stream ); +} + +bool wxImage::SaveFile( wxOutputStream& stream, const wxString& mimetype ) +{ + wxCHECK_MSG( Ok(), FALSE, wxT("invalid image") ); + + wxImageHandler *handler = FindHandlerMime(mimetype); + + if (handler == NULL) + { + wxLogWarning( _("No image handler for type %s defined."), mimetype.GetData() ); - return FALSE; + return FALSE; } return handler->SaveFile( this, stream ); @@ -426,7 +631,7 @@ wxImageHandler *wxImage::FindHandler( const wxString& extension, long bitmapType wxImageHandler *handler = (wxImageHandler*)node->Data(); if ( (handler->GetExtension().Cmp(extension) == 0) && (bitmapType == -1 || handler->GetType() == bitmapType) ) - return handler; + return handler; node = node->Next(); } return (wxImageHandler*)NULL; @@ -444,12 +649,21 @@ wxImageHandler *wxImage::FindHandler( long bitmapType ) return NULL; } +wxImageHandler *wxImage::FindHandlerMime( const wxString& mimetype ) +{ + wxNode *node = sm_handlers.First(); + while (node) + { + wxImageHandler *handler = (wxImageHandler *)node->Data(); + if (handler->GetMimeType().IsSameAs(mimetype, FALSE)) return handler; + node = node->Next(); + } + return NULL; +} + void wxImage::InitStandardHandlers() { - AddHandler( new wxBMPHandler ); -#ifdef wxUSE_LIBPNG - AddHandler( new wxPNGHandler ); -#endif + AddHandler( new wxBMPHandler ); } void wxImage::CleanUpHandlers() @@ -469,785 +683,185 @@ void wxImage::CleanUpHandlers() // wxImageHandler //----------------------------------------------------------------------------- -#if !USE_SHARED_LIBRARIES -IMPLEMENT_DYNAMIC_CLASS(wxImageHandler,wxObject) -#endif +IMPLEMENT_ABSTRACT_CLASS(wxImageHandler,wxObject) #if wxUSE_STREAMS -bool wxImageHandler::LoadFile( wxImage *WXUNUSED(image), wxInputStream& WXUNUSED(stream) ) +bool wxImageHandler::LoadFile( wxImage *WXUNUSED(image), wxInputStream& WXUNUSED(stream), bool WXUNUSED(verbose), int WXUNUSED(index) ) { return FALSE; } -bool wxImageHandler::SaveFile( wxImage *WXUNUSED(image), wxOutputStream& WXUNUSED(stream) ) +bool wxImageHandler::SaveFile( wxImage *WXUNUSED(image), wxOutputStream& WXUNUSED(stream), bool WXUNUSED(verbose) ) { return FALSE; } -#endif // wxUSE_STREAMS -//----------------------------------------------------------------------------- -// wxPNGHandler -//----------------------------------------------------------------------------- - -#ifdef wxUSE_LIBPNG - -#if !USE_SHARED_LIBRARIES -IMPLEMENT_DYNAMIC_CLASS(wxPNGHandler,wxImageHandler) -#endif - - -#if wxUSE_STREAMS -static void _PNG_stream_reader( png_structp png_ptr, png_bytep data, png_size_t length ) +int wxImageHandler::GetImageCount( wxInputStream& WXUNUSED(stream) ) { - ((wxInputStream*) png_get_io_ptr( png_ptr )) -> Read(data, length); + return 1; } -static void _PNG_stream_writer( png_structp png_ptr, png_bytep data, png_size_t length ) +bool wxImageHandler::CanRead( const wxString& name ) { - ((wxOutputStream*) png_get_io_ptr( png_ptr )) -> Write(data, length); -} + if (wxFileExists(name)) + { + wxFileInputStream stream(name); + return CanRead(stream); + } -bool wxPNGHandler::LoadFile( wxImage *image, wxInputStream& stream ) -{ - // VZ: as this function uses setjmp() the only fool proof error handling - // method is to use goto (setjmp is not really C++ dtors friendly...) - - unsigned char **lines = (unsigned char **) NULL; - unsigned int i; - png_infop info_ptr = (png_infop) NULL; - - image->Destroy(); + else { + wxLogError( _("Can't check image format of file '%s': file does not exist."), name.c_str() ); - png_structp png_ptr = png_create_read_struct( PNG_LIBPNG_VER_STRING, - (voidp) NULL, - (png_error_ptr) NULL, - (png_error_ptr) NULL ); - if (!png_ptr) - goto error; + return FALSE; + } +// return FALSE; +} - info_ptr = png_create_info_struct( png_ptr ); - if (!info_ptr) - goto error; +#endif // wxUSE_STREAMS - if (setjmp(png_ptr->jmpbuf)) - goto error; +//----------------------------------------------------------------------------- +// MSW conversion routines +//----------------------------------------------------------------------------- - if (info_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA) - goto error; +#ifdef __WXMSW__ - png_set_read_fn( png_ptr, &stream, _PNG_stream_reader); +wxBitmap wxImage::ConvertToBitmap() const +{ + if ( !Ok() ) + return wxNullBitmap; - png_uint_32 width,height; - int bit_depth,color_type,interlace_type; + // sizeLimit is the MS upper limit for the DIB size +#ifdef WIN32 + int sizeLimit = 1024*768*3; +#else + int sizeLimit = 0x7fff ; +#endif - png_read_info( png_ptr, info_ptr ); - png_get_IHDR( png_ptr, info_ptr, &width, &height, &bit_depth, &color_type, &interlace_type, (int*) NULL, (int*) NULL ); + // width and height of the device-dependent bitmap + int width = GetWidth(); + int bmpHeight = GetHeight(); - if (color_type == PNG_COLOR_TYPE_PALETTE) - png_set_expand( png_ptr ); + // 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++; + } - png_set_strip_16( png_ptr ); - png_set_packing( png_ptr ); - if (png_get_valid( png_ptr, info_ptr, PNG_INFO_tRNS)) - png_set_expand( png_ptr ); - png_set_filler( png_ptr, 0xff, PNG_FILLER_AFTER ); + // set bitmap parameters + wxBitmap bitmap; + wxCHECK_MSG( Ok(), bitmap, wxT("invalid image") ); + bitmap.SetWidth( width ); + bitmap.SetHeight( bmpHeight ); + bitmap.SetDepth( wxDisplayDepth() ); - image->Create( width, height ); + // create a DIB header + int headersize = sizeof(BITMAPINFOHEADER); + BITMAPINFO *lpDIBh = (BITMAPINFO *) malloc( headersize ); + wxCHECK_MSG( lpDIBh, bitmap, 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 bitmap; + } - if (!image->Ok()) - goto error; + // 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); - lines = (unsigned char **)malloc( height * sizeof(unsigned char *) ); - if (lines == NULL) - goto error; + // copy image data into DIB data and then into DDB (in a loop) + unsigned char *data = GetData(); + int i, j, n; + int origin = 0; + unsigned char *ptdata = data; + unsigned char *ptbits; - for (i = 0; i < height; i++) + for( n=0; n 1 && n == numDIB-1 && hRemain > 0 ) { - for ( unsigned int n = 0; n < i; n++ ) - free( lines[n] ); - goto error; + // 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; - // loaded successfully! - { - int transp = 0; - png_read_image( png_ptr, lines ); - png_destroy_read_struct( &png_ptr, &info_ptr, (png_infopp) NULL ); - unsigned char *ptr = image->GetData(); - if ((color_type == PNG_COLOR_TYPE_GRAY) || - (color_type == PNG_COLOR_TYPE_GRAY_ALPHA)) - { - for (unsigned int y = 0; y < height; y++) - { - unsigned char *ptr2 = lines[y]; - for (unsigned int x = 0; x < width; x++) - { - unsigned char r = *ptr2++; - unsigned char a = *ptr2++; - if (a < 128) - { - *ptr++ = 255; - *ptr++ = 0; - *ptr++ = 255; - transp = 1; - } - else - { - *ptr++ = r; - *ptr++ = r; - *ptr++ = r; - } - } - } - } - else + for( j=0; jSetMaskColour( 255, 0, 255 ); - } - else - { - image->SetMask( FALSE ); - } - } - - return TRUE; - -error: - wxLogError(_("Couldn't load a PNG image - probably file is corrupted.")); - - if ( image->Ok() ) - { - image->Destroy(); - } - - if ( lines ) - { - free( lines ); - } - - if ( png_ptr ) - { - if ( info_ptr ) - { - png_destroy_read_struct( &png_ptr, &info_ptr, (png_infopp) NULL ); - free(info_ptr); - } - else - png_destroy_read_struct( &png_ptr, (png_infopp) NULL, (png_infopp) NULL ); - } - return FALSE; -} - - -bool wxPNGHandler::SaveFile( wxImage *image, wxOutputStream& stream ) -{ - { - png_structp png_ptr = png_create_write_struct( PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); - if (!png_ptr) - { - return FALSE; - } - - png_infop info_ptr = png_create_info_struct(png_ptr); - if (info_ptr == NULL) - { - png_destroy_write_struct( &png_ptr, (png_infopp)NULL ); - return FALSE; - } - - if (setjmp(png_ptr->jmpbuf)) - { - png_destroy_write_struct( &png_ptr, (png_infopp)NULL ); - return FALSE; - } - - png_set_write_fn( png_ptr, &stream, _PNG_stream_writer, NULL); - - png_set_IHDR( png_ptr, info_ptr, image->GetWidth(), image->GetHeight(), 8, - PNG_COLOR_TYPE_RGB_ALPHA, PNG_INTERLACE_NONE, - PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE); - - png_color_8 sig_bit; - sig_bit.red = 8; - sig_bit.green = 8; - sig_bit.blue = 8; - sig_bit.alpha = 8; - png_set_sBIT( png_ptr, info_ptr, &sig_bit ); - png_write_info( png_ptr, info_ptr ); - png_set_shift( png_ptr, &sig_bit ); - png_set_packing( png_ptr ); - - unsigned char *data = (unsigned char *)malloc( image->GetWidth()*4 ); - if (!data) - { - png_destroy_write_struct( &png_ptr, (png_infopp)NULL ); - return FALSE; - } - - for (int y = 0; y < image->GetHeight(); y++) - { - unsigned char *ptr = image->GetData() + (y * image->GetWidth() * 3); - for (int x = 0; x < image->GetWidth(); x++) - { - data[(x << 2) + 0] = *ptr++; - data[(x << 2) + 1] = *ptr++; - data[(x << 2) + 2] = *ptr++; - if ((data[(x << 2) + 0] == image->GetMaskRed()) && - (data[(x << 2) + 1] == image->GetMaskGreen()) && - (data[(x << 2) + 2] == image->GetMaskBlue())) - { - data[(x << 2) + 3] = 0; - } - else - { - data[(x << 2) + 3] = 255; - } - } - png_bytep row_ptr = data; - png_write_rows( png_ptr, &row_ptr, 1 ); - } - - free(data); - png_write_end( png_ptr, info_ptr ); - png_destroy_write_struct( &png_ptr, (png_infopp)&info_ptr ); - } - return TRUE; -} -#endif // wxUSE_STREAMS - -#endif - - // wxUSE_LIBPNG - -//----------------------------------------------------------------------------- -// wxBMPHandler -//----------------------------------------------------------------------------- - -#if !USE_SHARED_LIBRARIES -IMPLEMENT_DYNAMIC_CLASS(wxBMPHandler,wxImageHandler) -#endif - -#if wxUSE_STREAMS -bool wxBMPHandler::LoadFile( wxImage *image, wxInputStream& stream ) -{ - unsigned char *data, *ptr; - int done, i, bpp, planes, comp, ncolors, line, column, - linesize, linepos, rshift = 0, gshift = 0, bshift = 0; - unsigned char aByte; - short int word; - long int dbuf[4], dword, rmask = 0, gmask = 0, bmask = 0, offset, - size; - off_t start_offset = stream.TellI(); - signed char bbuf[4]; - struct _cmap - { - unsigned char r, g, b; - } - *cmap = NULL; -#ifndef BI_RGB -#define BI_RGB 0 -#define BI_RLE8 1 -#define BI_RLE4 2 -#endif - -#ifndef BI_BITFIELDS -#define BI_BITFIELDS 3 -#endif - - image->Destroy(); - - done = 0; - /* - * Reading the bmp header - */ - - stream.Read(&bbuf, 2); - - stream.Read(dbuf, 4 * 4); - - size = dbuf[0]; - offset = dbuf[2]; - - stream.Read(dbuf, 4 * 2); - int width = (int)dbuf[0]; - int height = (int)dbuf[1]; - if (width > 32767) - { - wxLogError( "Image width > 32767 pixels for file\n" ); - return FALSE; - } - if (height > 32767) - { - wxLogError( "Image height > 32767 pixels for file\n" ); - return FALSE; - } - stream.Read(&word, 2); - planes = (int)word; - stream.Read(&word, 2); - bpp = (int)word; - if (bpp != 1 && bpp != 4 && bpp != 8 && bpp && 16 && bpp != 24 && bpp != 32) - { - wxLogError( "unknown bitdepth in file\n" ); - return FALSE; - } - stream.Read(dbuf, 4 * 4); - comp = (int)dbuf[0]; - if (comp != BI_RGB && comp != BI_RLE4 && comp != BI_RLE8 && comp != BI_BITFIELDS) - { - wxLogError( "unknown encoding in Windows BMP file\n" ); - return FALSE; - } - stream.Read(dbuf, 4 * 2); - ncolors = (int)dbuf[0]; - if (ncolors == 0) - ncolors = 1 << bpp; - /* some more sanity checks */ - if (((comp == BI_RLE4) && (bpp != 4)) || ((comp == BI_RLE8) && (bpp != 8)) || ((comp == BI_BITFIELDS) && (bpp != 16 && bpp != 32))) - { - wxLogError( "encoding of BMP doesn't match bitdepth\n" ); - return FALSE; - } - if (bpp < 16) - { - cmap = (struct _cmap *)malloc(sizeof(struct _cmap) * ncolors); - - if (!cmap) - { - wxLogError( "Cannot allocate RAM for color map in BMP file\n" ); - return FALSE; - } - } - else - cmap = NULL; - - image->Create( width, height ); - ptr = image->GetData(); - if (!ptr) - { - wxLogError( "Cannot allocate RAM for RGB data in file\n" ); - if (cmap) - free(cmap); - return FALSE; - } - - /* - * Reading the palette, if it exists. - */ - if (bpp < 16 && ncolors != 0) - { - for (i = 0; i < ncolors; i++) - { - stream.Read(bbuf, 4); - cmap[i].b = bbuf[0]; - cmap[i].g = bbuf[1]; - cmap[i].r = bbuf[2]; - } - } - else if (bpp == 16 || bpp == 32) - { - if (comp == BI_BITFIELDS) - { - int bit = 0; - - stream.Read(dbuf, 4 * 3); - bmask = dbuf[0]; - gmask = dbuf[1]; - rmask = dbuf[2]; - /* find shift amount.. ugly, but i can't think of a better way */ - for (bit = 0; bit < bpp; bit++) - { - if (bmask & (1 << bit)) - bshift = bit; - if (gmask & (1 << bit)) - gshift = bit; - if (rmask & (1 << bit)) - rshift = bit; - } - } - else if (bpp == 16) - { - rmask = 0x7C00; - gmask = 0x03E0; - bmask = 0x001F; - rshift = 10; - gshift = 5; - bshift = 0; - } - else if (bpp == 32) - { - rmask = 0x00FF0000; - gmask = 0x0000FF00; - bmask = 0x000000FF; - rshift = 16; - gshift = 8; - bshift = 0; - } - } - - /* - * Reading the image data - */ - stream.SeekI(start_offset + offset); - data = ptr; - - /* set the whole image to the background color */ - if (bpp < 16 && (comp == BI_RLE4 || comp == BI_RLE8)) - { - for (i = 0; i < width * height; i++) - { - *ptr++ = cmap[0].r; - *ptr++ = cmap[0].g; - *ptr++ = cmap[0].b; - } - ptr = data; - } - line = 0; - column = 0; -#define poffset (line * width * 3 + column * 3) - - /* - * BMPs are stored upside down... hmmmmmmmmmm.... - */ - - linesize = ((width * bpp + 31) / 32) * 4; - for (line = (height - 1); line >= 0; line--) - { - linepos = 0; - for (column = 0; column < width;) - { - if (bpp < 16) - { - int index; - - linepos++; - aByte = stream.GetC(); - if (bpp == 1) - { - int bit = 0; - - for (bit = 0; bit < 8; bit++) - { - index = ((aByte & (0x80 >> bit)) ? 1 : 0); - ptr[poffset] = cmap[index].r; - ptr[poffset + 1] = cmap[index].g; - ptr[poffset + 2] = cmap[index].b; - column++; - } - } - else if (bpp == 4) - { - if (comp == BI_RLE4) - { - wxLogError( "can't deal with 4bit encoded yet.\n"); - image->Destroy(); - free(cmap); - return FALSE; - } - else - { - int nibble = 0; - - for (nibble = 0; nibble < 2; nibble++) - { - index = ((aByte & (0xF0 >> nibble * 4)) >> (!nibble * 4)); - if (index >= 16) - index = 15; - ptr[poffset] = cmap[index].r; - ptr[poffset + 1] = cmap[index].g; - ptr[poffset + 2] = cmap[index].b; - column++; - } - } - } - else if (bpp == 8) - { - if (comp == BI_RLE8) - { - unsigned char first; - - first = aByte; - aByte = stream.GetC(); - if (first == 0) - { - if (aByte == 0) - { -/* column = width; */ - } - else if (aByte == 1) - { - column = width; - line = -1; - } - else if (aByte == 2) - { - aByte = stream.GetC(); - column += aByte; - linepos = column * bpp / 8; - aByte = stream.GetC(); - line += aByte; - } - else - { - int absolute = aByte; - - for (i = 0; i < absolute; i++) - { - linepos++; - aByte = stream.GetC(); - ptr[poffset] = cmap[aByte].r; - ptr[poffset + 1] = cmap[aByte].g; - ptr[poffset + 2] = cmap[aByte].b; - column++; - } - if (absolute & 0x01) - aByte = stream.GetC(); - } - } - else - { - for (i = 0; i < first; i++) - { - ptr[poffset] = cmap[aByte].r; - ptr[poffset + 1] = cmap[aByte].g; - ptr[poffset + 2] = cmap[aByte].b; - column++; - linepos++; - } - } - } - else - { - ptr[poffset] = cmap[aByte].r; - ptr[poffset + 1] = cmap[aByte].g; - ptr[poffset + 2] = cmap[aByte].b; - column++; - linepos += size; - } - } - } - else if (bpp == 24) - { - stream.Read(&bbuf, 3); - linepos += 3; - ptr[poffset] = (unsigned char)bbuf[2]; - ptr[poffset + 1] = (unsigned char)bbuf[1]; - ptr[poffset + 2] = (unsigned char)bbuf[0]; - column++; - } - else if (bpp == 16) - { - unsigned char temp; - - stream.Read(&word, 2); - linepos += 2; - temp = (word & rmask) >> rshift; - ptr[poffset] = temp; - temp = (word & gmask) >> gshift; - ptr[poffset + 1] = temp; - temp = (word & bmask) >> gshift; - ptr[poffset + 2] = temp; - column++; - } - else - { - unsigned char temp; - - stream.Read(&dword, 4); - linepos += 4; - temp = (dword & rmask) >> rshift; - ptr[poffset] = temp; - temp = (dword & gmask) >> gshift; - ptr[poffset + 1] = temp; - temp = (dword & bmask) >> bshift; - ptr[poffset + 2] = temp; - column++; - } - } - while ((linepos < linesize) && (comp != 1) && (comp != 2)) - { - stream.Read(&aByte, 1); - linepos += 1; - if (stream.LastError() != wxStream_NOERROR) - break; - } - } - if (cmap) free(cmap); - - image->SetMask( FALSE ); - - return TRUE; -} -#endif // wxUSE_STREAMS - -#ifdef __WXMSW__ - -wxBitmap wxImage::ConvertToBitmap() const -{ -// sizeLimit is the MS upper limit for the DIB size - int sizeLimit = 1024*768*3; - -// width and height of the device-dependent bitmap - int width = GetWidth(); - int bmpHeight = GetHeight(); - -// calc the number of bytes per scanline and padding - int bytePerLine = width*3; - int sizeDWORD = sizeof( DWORD ); - div_t lineBoundary = div( bytePerLine, sizeDWORD ); - int padding = 0; - if( lineBoundary.rem > 0 ) - { - padding = sizeDWORD - lineBoundary.rem; - 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 - { - div_t result = div( bmpHeight, height ); - numDIB = result.quot; - hRemain = result.rem; - if( hRemain >0 ) numDIB++; - } - -// set bitmap parameters - wxBitmap bitmap; - wxCHECK_MSG( Ok(), bitmap, "invalid image" ); - bitmap.SetWidth( width ); - bitmap.SetHeight( bmpHeight ); - bitmap.SetDepth( wxDisplayDepth() ); - -// create a DIB header - int headersize = sizeof(BITMAPINFOHEADER); - LPBITMAPINFO lpDIBh = (BITMAPINFO *) malloc( headersize ); - wxCHECK_MSG( lpDIBh, bitmap, "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( "could not allocate memory for DIB" ); - free( lpDIBh ); - return bitmap; - } - -// 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); - -// copy image data into DIB data and then into DDB (in a loop) - unsigned char *data = 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 ); + 0, 0, width, height, lpBits, lpDIBh, DIB_RGB_COLORS, SRCCOPY); + origin += height; + // if numDIB = 1, lines below can also be used + // hbitmap = CreateDIBitmap( hdc, &(lpDIBh->bmiHeader), 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 ); } bitmap.SetHBITMAP( (WXHBITMAP) hbitmap ); -// similarly, created an mono-bitmap for the possible mask + // similarly, created an mono-bitmap for the possible mask if( HasMask() ) { hbitmap = ::CreateBitmap( (WORD)width, (WORD)bmpHeight, 1, 1, NULL ); - ::SelectObject( memdc, hbitmap); - if( numDIB == 1 ) height = bmpHeight; + HGDIOBJ hbmpOld = ::SelectObject( memdc, hbitmap); + if( numDIB == 1 ) height = bmpHeight; else height = sizeLimit/bytePerLine; lpDIBh->bmiHeader.biHeight = (DWORD)(-height); lpDIBh->bmiHeader.biSizeImage = bytePerLine*height; @@ -1261,18 +875,23 @@ wxBitmap wxImage::ConvertToBitmap() const { if( numDIB > 1 && n == numDIB - 1 && hRemain > 0 ) { - // redefine height and size of the (possibly) last smaller DIB - // memory is not reallocated - height = hRemain; + // 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 ); bitmap.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 + // 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( bitmap, colour ); bitmap.SetMask( mask ); -*/ + */ + + ::SelectObject( memdc, hbmpOld ); } -// free allocated resources - ::SelectObject( memdc, 0 ); - ::DeleteDC( memdc ); - ::ReleaseDC(NULL, hdc); + // free allocated resources + ::DeleteDC( memdc ); + ::ReleaseDC(NULL, hdc); free(lpDIBh); free(lpBits); -// check the wxBitmap object - if( bitmap.GetHBITMAP() ) - bitmap.SetOk( TRUE ); - else - bitmap.SetOk( FALSE ); - +#if WXWIN_COMPATIBILITY_2 + // check the wxBitmap object + bitmap.GetBitmapData()->SetOk(); +#endif // WXWIN_COMPATIBILITY_2 + return bitmap; } wxImage::wxImage( const wxBitmap &bitmap ) { -// check the bitmap + // check the bitmap if( !bitmap.Ok() ) { - wxFAIL_MSG( "invalid bitmap" ); + wxFAIL_MSG( wxT("invalid bitmap") ); return; } -// create an wxImage object + // create an wxImage object int width = bitmap.GetWidth(); int height = bitmap.GetHeight(); - Create( width, height ); + Create( width, height ); unsigned char *data = GetData(); if( !data ) { - wxFAIL_MSG( "could not allocate data for image" ); + wxFAIL_MSG( wxT("could not allocate data for image") ); return; } -// calc the number of bytes per scanline and padding in the DIB + // calc the number of bytes per scanline and padding in the DIB int bytePerLine = width*3; int sizeDWORD = sizeof( DWORD ); - div_t lineBoundary = div( bytePerLine, sizeDWORD ); + int lineBoundary = bytePerLine % sizeDWORD; int padding = 0; - if( lineBoundary.rem > 0 ) + if( lineBoundary > 0 ) { - padding = sizeDWORD - lineBoundary.rem; + padding = sizeDWORD - lineBoundary; bytePerLine += padding; } -// create a DIB header + // create a DIB header int headersize = sizeof(BITMAPINFOHEADER); - LPBITMAPINFO lpDIBh = (BITMAPINFO *) malloc( headersize ); + BITMAPINFO *lpDIBh = (BITMAPINFO *) malloc( headersize ); if( !lpDIBh ) { - wxFAIL_MSG( "could not allocate data for DIB header" ); + wxFAIL_MSG( wxT("could not allocate data for DIB header") ); free( data ); return; } -// Fill in the DIB header + // Fill in the DIB header lpDIBh->bmiHeader.biSize = headersize; lpDIBh->bmiHeader.biWidth = width; lpDIBh->bmiHeader.biHeight = -height; @@ -1368,28 +987,28 @@ wxImage::wxImage( const wxBitmap &bitmap ) lpDIBh->bmiHeader.biBitCount = 24; lpDIBh->bmiHeader.biCompression = BI_RGB; lpDIBh->bmiHeader.biClrUsed = 0; -// These seem not really needed for our purpose here. + // 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 + // memory for DIB data unsigned char *lpBits; lpBits = (unsigned char *) malloc( lpDIBh->bmiHeader.biSizeImage ); if( !lpBits ) { - wxFAIL_MSG( "could not allocate data for DIB" ); + wxFAIL_MSG( wxT("could not allocate data for DIB") ); free( data ); free( lpDIBh ); return; } - -// copy data from the device-dependent bitmap to the DIB + + // copy data from the device-dependent bitmap to the DIB HDC hdc = ::GetDC(NULL); HBITMAP hbitmap; hbitmap = (HBITMAP) bitmap.GetHBITMAP(); ::GetDIBits( hdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS ); - -// copy DIB data into the wxImage object + + // copy DIB data into the wxImage object int i, j; unsigned char *ptdata = data; unsigned char *ptbits = lpBits; @@ -1401,22 +1020,22 @@ wxImage::wxImage( const wxBitmap &bitmap ) *(ptdata++) = *(ptbits+1); *(ptdata++) = *(ptbits ); ptbits += 3; - } + } ptbits += padding; - } - -// similarly, set data according to the possible mask bitmap + } + + // similarly, set data according to the possible mask bitmap if( bitmap.GetMask() && bitmap.GetMask()->GetMaskBitmap() ) { hbitmap = (HBITMAP) bitmap.GetMask()->GetMaskBitmap(); - // memory DC created, color set, data copied, and memory DC deleted + // 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; + ::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 + +extern CTabHandle wxMacCreateColorTable( int numColors ) ; +extern void wxMacDestroyColorTable( CTabHandle colors ) ; +extern void wxMacSetColorTableEntry( CTabHandle newColors , int index , int red , int green , int blue ) ; +extern GWorldPtr wxMacCreateGWorld( int height , int width , int depth ) ; +extern void wxMacDestroyGWorld( GWorldPtr gw ) ; wxBitmap wxImage::ConvertToBitmap() const { - wxBitmap bitmap; - - wxCHECK_MSG( Ok(), bitmap, "invalid image" ); - + // width and height of the device-dependent bitmap int width = GetWidth(); int height = GetHeight(); - bitmap.SetHeight( height ); - bitmap.SetWidth( width ); - // Create picture - GdkImage *data_image = - gdk_image_new( GDK_IMAGE_FASTEST, gdk_visual_get_system(), width, height ); - - bitmap.SetPixmap( gdk_pixmap_new( (GdkWindow*)&gdk_root_parent, width, height, -1 ) ); + wxBitmap bitmap( width , height , wxDisplayDepth() ) ; // Create mask - GdkImage *mask_image = (GdkImage*) NULL; - if (HasMask()) { + /* unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height ); mask_image = gdk_image_new_bitmap( gdk_visual_get_system(), mask_data, width, height ); @@ -1489,135 +1102,281 @@ wxBitmap wxImage::ConvertToBitmap() const mask->m_bitmap = gdk_pixmap_new( (GdkWindow*)&gdk_root_parent, width, height, 1 ); bitmap.SetMask( mask ); + */ } - // Retrieve depth - - GdkVisual *visual = gdk_window_get_visual( bitmap.GetPixmap() ); - if (visual == NULL) visual = gdk_window_get_visual( (GdkWindow*) &gdk_root_parent ); - int bpp = visual->depth; - - bitmap.SetDepth( bpp ); - - if ((bpp == 16) && (visual->red_mask != 0xf800)) bpp = 15; - if (bpp < 8) bpp = 8; - // Render - enum byte_order { RGB, RBG, BRG, BGR, GRB, GBR }; - byte_order b_o = RGB; - - if (bpp >= 24) - { - GdkVisual *visual = gdk_visual_get_system(); - if ((visual->red_mask > visual->green_mask) && (visual->green_mask > visual->blue_mask)) b_o = RGB; - else if ((visual->red_mask > visual->blue_mask) && (visual->blue_mask > visual->green_mask)) b_o = RGB; - else if ((visual->blue_mask > visual->red_mask) && (visual->red_mask > visual->green_mask)) b_o = BRG; - else if ((visual->blue_mask > visual->green_mask) && (visual->green_mask > visual->red_mask)) b_o = BGR; - else if ((visual->green_mask > visual->red_mask) && (visual->red_mask > visual->blue_mask)) b_o = GRB; - else if ((visual->green_mask > visual->blue_mask) && (visual->blue_mask > visual->red_mask)) b_o = GBR; - } - int r_mask = GetMaskRed(); int g_mask = GetMaskGreen(); int b_mask = GetMaskBlue(); - unsigned char* data = GetData(); + CGrafPtr origPort ; + GDHandle origDevice ; + + GetGWorld( &origPort , &origDevice ) ; + SetGWorld( bitmap.GetHBITMAP() , NULL ) ; + + register unsigned char* data = GetData(); int index = 0; for (int y = 0; y < height; y++) { for (int x = 0; x < width; x++) { - int r = data[index]; - index++; - int g = data[index]; - index++; - int b = data[index]; - index++; + unsigned char r = data[index++]; + unsigned char g = data[index++]; + unsigned char b = data[index++]; + RGBColor color ; + color.red = ( r << 8 ) + r ; + color.green = ( g << 8 ) + g ; + color.blue = ( b << 8 ) + b ; + SetCPixel( x , y , &color ) ; + } + } // for height - if (HasMask()) - { - if ((r == r_mask) && (b == b_mask) && (g == g_mask)) - gdk_image_put_pixel( mask_image, x, y, 1 ); - else - gdk_image_put_pixel( mask_image, x, y, 0 ); - } + SetGWorld( origPort , origDevice ) ; - if (HasMask()) - { - if ((r == r_mask) && (b == b_mask) && (g == g_mask)) - gdk_image_put_pixel( mask_image, x, y, 1 ); - else - gdk_image_put_pixel( mask_image, x, y, 0 ); - } + if ( HasMask() ) + { + wxColour colour( GetMaskRed(), GetMaskGreen(), GetMaskBlue()); + wxMask *mask = new wxMask( bitmap, colour ); + bitmap.SetMask( mask ); + } + return bitmap; - switch (bpp) - { - case 8: - { - int pixel = -1; - if (wxTheApp->m_colorCube) - { - pixel = wxTheApp->m_colorCube[ ((r & 0xf8) << 7) + ((g & 0xf8) << 2) + ((b & 0xf8) >> 3) ]; - } - else - { - GdkColormap *cmap = gtk_widget_get_default_colormap(); - GdkColor *colors = cmap->colors; - int max = 3 * (65536); +} - for (int i = 0; i < cmap->size; i++) - { - int rdiff = (r << 8) - colors[i].red; - int gdiff = (g << 8) - colors[i].green; - int bdiff = (b << 8) - colors[i].blue; - int sum = ABS (rdiff) + ABS (gdiff) + ABS (bdiff); - if (sum < max) { pixel = i; max = sum; } - } - } +wxImage::wxImage( const wxBitmap &bitmap ) +{ + // check the bitmap + if( !bitmap.Ok() ) + { + wxFAIL_MSG( "invalid bitmap" ); + return; + } - gdk_image_put_pixel( data_image, x, y, pixel ); + // create an wxImage object + int width = bitmap.GetWidth(); + int height = bitmap.GetHeight(); + Create( width, height ); + /* + unsigned char *data = GetData(); + if( !data ) + { + wxFAIL_MSG( "could not allocate data for image" ); + return; + } - break; - } - case 15: - { - guint32 pixel = ((r & 0xf8) << 7) | ((g & 0xf8) << 2) | ((b & 0xf8) >> 3); - gdk_image_put_pixel( data_image, x, y, pixel ); - break; - } - case 16: - { - guint32 pixel = ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | ((b & 0xf8) >> 3); - gdk_image_put_pixel( data_image, x, y, pixel ); - break; - } - case 32: - case 24: + // calc the number of bytes per scanline and padding in the DIB + int bytePerLine = width*3; + int sizeDWORD = sizeof( DWORD ); + div_t lineBoundary = div( bytePerLine, sizeDWORD ); + int padding = 0; + if( lineBoundary.rem > 0 ) + { + padding = sizeDWORD - lineBoundary.rem; + bytePerLine += padding; + } + + // create a DIB header + int headersize = sizeof(BITMAPINFOHEADER); + LPBITMAPINFO lpDIBh = (BITMAPINFO *) malloc( headersize ); + if( !lpDIBh ) + { + wxFAIL_MSG( "could not allocate data for DIB header" ); + free( data ); + return; + } + // 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( "could not allocate data for DIB" ); + free( data ); + free( lpDIBh ); + return; + } + + // copy data from the device-dependent bitmap to the DIB + HDC hdc = ::GetDC(NULL); + HBITMAP hbitmap; + hbitmap = (HBITMAP) bitmap.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) bitmap.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 +#include +#include + +#if (GTK_MINOR_VERSION > 0) +#include +#endif + +extern GtkWidget *wxRootWindow; + +wxBitmap wxImage::ConvertToMonoBitmap( unsigned char red, unsigned char green, unsigned char blue ) +{ + wxBitmap bitmap; + + wxCHECK_MSG( Ok(), bitmap, wxT("invalid image") ); + + int width = GetWidth(); + int height = GetHeight(); + + bitmap.SetHeight( height ); + bitmap.SetWidth( width ); + + bitmap.SetBitmap( gdk_pixmap_new( wxRootWindow->window, width, height, 1 ) ); + + bitmap.SetDepth( 1 ); + + GdkVisual *visual = gdk_window_get_visual( wxRootWindow->window ); + wxASSERT( visual ); + + // Create picture image + + unsigned char *data_data = (unsigned char*)malloc( ((width >> 3)+8) * height ); + + GdkImage *data_image = + gdk_image_new_bitmap( visual, data_data, width, height ); + + // Create mask image + + GdkImage *mask_image = (GdkImage*) NULL; + + if (HasMask()) + { + unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height ); + + mask_image = gdk_image_new_bitmap( visual, mask_data, width, height ); + + wxMask *mask = new wxMask(); + mask->m_bitmap = gdk_pixmap_new( wxRootWindow->window, width, height, 1 ); + + bitmap.SetMask( mask ); + } + + int r_mask = GetMaskRed(); + int g_mask = GetMaskGreen(); + int b_mask = GetMaskBlue(); + + unsigned char* data = GetData(); + + int index = 0; + for (int y = 0; y < height; y++) + { + for (int x = 0; x < width; x++) + { + int r = data[index]; + index++; + int g = data[index]; + index++; + int b = data[index]; + index++; + + if (HasMask()) + { + if ((r == r_mask) && (b == b_mask) && (g == g_mask)) + gdk_image_put_pixel( mask_image, x, y, 1 ); + else + gdk_image_put_pixel( mask_image, x, y, 0 ); } + + if ((r == red) && (b == blue) && (g == green)) + gdk_image_put_pixel( data_image, x, y, 1 ); + else + gdk_image_put_pixel( data_image, x, y, 0 ); + } // for } // for // Blit picture - GdkGC *data_gc = gdk_gc_new( bitmap.GetPixmap() ); + GdkGC *data_gc = gdk_gc_new( bitmap.GetBitmap() ); - gdk_draw_image( bitmap.GetPixmap(), data_gc, data_image, 0, 0, 0, 0, width, height ); + gdk_draw_image( bitmap.GetBitmap(), data_gc, data_image, 0, 0, 0, 0, width, height ); gdk_image_destroy( data_image ); gdk_gc_unref( data_gc ); @@ -1637,54 +1396,810 @@ wxBitmap wxImage::ConvertToBitmap() const return bitmap; } -wxImage::wxImage( const wxBitmap &bitmap ) + +wxBitmap wxImage::ConvertToBitmap() const { - wxCHECK_RET( bitmap.Ok(), "invalid bitmap" ); + wxBitmap bitmap; - GdkImage *gdk_image = gdk_image_get( bitmap.GetPixmap(), - 0, 0, - bitmap.GetWidth(), bitmap.GetHeight() ); + wxCHECK_MSG( Ok(), bitmap, wxT("invalid image") ); - wxCHECK_RET( gdk_image, "couldn't create image" ); + int width = GetWidth(); + int height = GetHeight(); - Create( bitmap.GetWidth(), bitmap.GetHeight() ); - char unsigned *data = GetData(); + bitmap.SetHeight( height ); + bitmap.SetWidth( width ); - if (!data) - { - gdk_image_destroy( gdk_image ); - wxFAIL_MSG( "couldn't create image" ); - return; - } + bitmap.SetPixmap( gdk_pixmap_new( wxRootWindow->window, width, height, -1 ) ); - GdkImage *gdk_image_mask = (GdkImage*) NULL; - if (bitmap.GetMask()) - { - gdk_image_mask = gdk_image_get( bitmap.GetMask()->GetBitmap(), - 0, 0, - bitmap.GetWidth(), bitmap.GetHeight() ); + // Retrieve depth - SetMaskColour( 16, 16, 16 ); // anything unlikely and dividable - } + GdkVisual *visual = gdk_window_get_visual( wxRootWindow->window ); + wxASSERT( visual ); - GdkVisual *visual = gdk_window_get_visual( bitmap.GetPixmap() ); - if (visual == NULL) visual = gdk_window_get_visual( (GdkWindow*) &gdk_root_parent ); int bpp = visual->depth; + + bitmap.SetDepth( bpp ); + if ((bpp == 16) && (visual->red_mask != 0xf800)) bpp = 15; + if (bpp < 8) bpp = 8; - GdkColormap *cmap = gtk_widget_get_default_colormap(); +#if (GTK_MINOR_VERSION > 0) - long pos = 0; - for (int j = 0; j < bitmap.GetHeight(); j++) + if (!HasMask() && (bpp > 8)) { - for (int i = 0; i < bitmap.GetWidth(); i++) + static bool s_hasInitialized = FALSE; + + if (!s_hasInitialized) + { + gdk_rgb_init(); + s_hasInitialized = TRUE; + } + + GdkGC *gc = gdk_gc_new( bitmap.GetPixmap() ); + + gdk_draw_rgb_image( bitmap.GetPixmap(), + gc, + 0, 0, + width, height, + GDK_RGB_DITHER_NONE, + GetData(), + width*3 ); + + gdk_gc_unref( gc ); + + return bitmap; + } + +#endif + + // Create picture image + + GdkImage *data_image = + gdk_image_new( GDK_IMAGE_FASTEST, visual, width, height ); + + // Create mask image + + GdkImage *mask_image = (GdkImage*) NULL; + + if (HasMask()) + { + unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height ); + + mask_image = gdk_image_new_bitmap( visual, mask_data, width, height ); + + wxMask *mask = new wxMask(); + mask->m_bitmap = gdk_pixmap_new( wxRootWindow->window, width, height, 1 ); + + bitmap.SetMask( mask ); + } + + // Render + + enum byte_order { RGB, RBG, BRG, BGR, GRB, GBR }; + byte_order b_o = RGB; + + if (bpp >= 24) + { + if ((visual->red_mask > visual->green_mask) && (visual->green_mask > visual->blue_mask)) b_o = RGB; + else if ((visual->red_mask > visual->blue_mask) && (visual->blue_mask > visual->green_mask)) b_o = RGB; + else if ((visual->blue_mask > visual->red_mask) && (visual->red_mask > visual->green_mask)) b_o = BRG; + else if ((visual->blue_mask > visual->green_mask) && (visual->green_mask > visual->red_mask)) b_o = BGR; + else if ((visual->green_mask > visual->red_mask) && (visual->red_mask > visual->blue_mask)) b_o = GRB; + else if ((visual->green_mask > visual->blue_mask) && (visual->blue_mask > visual->red_mask)) b_o = GBR; + } + + int r_mask = GetMaskRed(); + int g_mask = GetMaskGreen(); + int b_mask = GetMaskBlue(); + + unsigned char* data = GetData(); + + int index = 0; + for (int y = 0; y < height; y++) + { + for (int x = 0; x < width; x++) + { + int r = data[index]; + index++; + int g = data[index]; + index++; + int b = data[index]; + index++; + + if (HasMask()) + { + if ((r == r_mask) && (b == b_mask) && (g == g_mask)) + gdk_image_put_pixel( mask_image, x, y, 1 ); + else + gdk_image_put_pixel( mask_image, x, y, 0 ); + } + + switch (bpp) + { + case 8: + { + int pixel = -1; + if (wxTheApp->m_colorCube) + { + pixel = wxTheApp->m_colorCube[ ((r & 0xf8) << 7) + ((g & 0xf8) << 2) + ((b & 0xf8) >> 3) ]; + } + else + { + GdkColormap *cmap = gtk_widget_get_default_colormap(); + GdkColor *colors = cmap->colors; + int max = 3 * (65536); + + for (int i = 0; i < cmap->size; i++) + { + int rdiff = (r << 8) - colors[i].red; + int gdiff = (g << 8) - colors[i].green; + int bdiff = (b << 8) - colors[i].blue; + int sum = ABS (rdiff) + ABS (gdiff) + ABS (bdiff); + if (sum < max) { pixel = i; max = sum; } + } + } + + gdk_image_put_pixel( data_image, x, y, pixel ); + + break; + } + case 15: + { + guint32 pixel = ((r & 0xf8) << 7) | ((g & 0xf8) << 2) | ((b & 0xf8) >> 3); + gdk_image_put_pixel( data_image, x, y, pixel ); + break; + } + case 16: + { + guint32 pixel = ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | ((b & 0xf8) >> 3); + gdk_image_put_pixel( data_image, x, y, pixel ); + break; + } + case 32: + case 24: + { + guint32 pixel = 0; + switch (b_o) + { + case RGB: pixel = (r << 16) | (g << 8) | b; break; + case RBG: pixel = (r << 16) | (b << 8) | g; break; + case BRG: pixel = (b << 16) | (r << 8) | g; break; + case BGR: pixel = (b << 16) | (g << 8) | r; break; + case GRB: pixel = (g << 16) | (r << 8) | b; break; + case GBR: pixel = (g << 16) | (b << 8) | r; break; + } + gdk_image_put_pixel( data_image, x, y, pixel ); + } + default: break; + } + } // for + } // for + + // Blit picture + + GdkGC *data_gc = gdk_gc_new( bitmap.GetPixmap() ); + + gdk_draw_image( bitmap.GetPixmap(), data_gc, data_image, 0, 0, 0, 0, width, height ); + + gdk_image_destroy( data_image ); + gdk_gc_unref( data_gc ); + + // Blit mask + + if (HasMask()) + { + GdkGC *mask_gc = gdk_gc_new( bitmap.GetMask()->GetBitmap() ); + + gdk_draw_image( bitmap.GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height ); + + gdk_image_destroy( mask_image ); + gdk_gc_unref( mask_gc ); + } + + return bitmap; +} + +wxImage::wxImage( const wxBitmap &bitmap ) +{ + wxCHECK_RET( bitmap.Ok(), wxT("invalid bitmap") ); + + GdkImage *gdk_image = (GdkImage*) NULL; + if (bitmap.GetPixmap()) + { + gdk_image = gdk_image_get( bitmap.GetPixmap(), + 0, 0, + bitmap.GetWidth(), bitmap.GetHeight() ); + } else + if (bitmap.GetBitmap()) + { + gdk_image = gdk_image_get( bitmap.GetBitmap(), + 0, 0, + bitmap.GetWidth(), bitmap.GetHeight() ); + } else + { + wxFAIL_MSG( wxT("Ill-formed bitmap") ); + } + + wxCHECK_RET( gdk_image, wxT("couldn't create image") ); + + Create( bitmap.GetWidth(), bitmap.GetHeight() ); + char unsigned *data = GetData(); + + if (!data) + { + gdk_image_destroy( gdk_image ); + wxFAIL_MSG( wxT("couldn't create image") ); + return; + } + + GdkImage *gdk_image_mask = (GdkImage*) NULL; + if (bitmap.GetMask()) + { + gdk_image_mask = gdk_image_get( bitmap.GetMask()->GetBitmap(), + 0, 0, + bitmap.GetWidth(), bitmap.GetHeight() ); + + SetMaskColour( 16, 16, 16 ); // anything unlikely and dividable + } + + int bpp = -1; + int red_shift_right = 0; + int green_shift_right = 0; + int blue_shift_right = 0; + int red_shift_left = 0; + int green_shift_left = 0; + int blue_shift_left = 0; + bool use_shift = FALSE; + + if (bitmap.GetPixmap()) + { + GdkVisual *visual = gdk_window_get_visual( bitmap.GetPixmap() ); + + if (visual == NULL) visual = gdk_window_get_visual( wxRootWindow->window ); + bpp = visual->depth; + if (bpp == 16) bpp = visual->red_prec + visual->green_prec + visual->blue_prec; + red_shift_right = visual->red_shift; + red_shift_left = 8-visual->red_prec; + green_shift_right = visual->green_shift; + green_shift_left = 8-visual->green_prec; + blue_shift_right = visual->blue_shift; + blue_shift_left = 8-visual->blue_prec; + + use_shift = (visual->type == GDK_VISUAL_TRUE_COLOR) || (visual->type == GDK_VISUAL_DIRECT_COLOR); + } + if (bitmap.GetBitmap()) + { + bpp = 1; + } + + + GdkColormap *cmap = gtk_widget_get_default_colormap(); + + long pos = 0; + for (int j = 0; j < bitmap.GetHeight(); j++) + { + for (int i = 0; i < bitmap.GetWidth(); i++) + { + wxUint32 pixel = gdk_image_get_pixel( gdk_image, i, j ); + if (bpp == 1) + { + if (pixel == 0) + { + data[pos] = 0; + data[pos+1] = 0; + data[pos+2] = 0; + } + else + { + data[pos] = 255; + data[pos+1] = 255; + data[pos+2] = 255; + } + } + else if (use_shift) + { + data[pos] = (pixel >> red_shift_right) << red_shift_left; + data[pos+1] = (pixel >> green_shift_right) << green_shift_left; + data[pos+2] = (pixel >> blue_shift_right) << blue_shift_left; + } + else if (cmap->colors) + { + data[pos] = cmap->colors[pixel].red >> 8; + data[pos+1] = cmap->colors[pixel].green >> 8; + data[pos+2] = cmap->colors[pixel].blue >> 8; + } + else + { + wxFAIL_MSG( wxT("Image conversion failed. Unknown visual type.") ); + } + + if (gdk_image_mask) + { + int mask_pixel = gdk_image_get_pixel( gdk_image_mask, i, j ); + if (mask_pixel == 0) + { + data[pos] = 16; + data[pos+1] = 16; + data[pos+2] = 16; + } + } + + pos += 3; + } + } + + gdk_image_destroy( gdk_image ); + if (gdk_image_mask) gdk_image_destroy( gdk_image_mask ); +} + +#endif + +//----------------------------------------------------------------------------- +// Motif conversion routines +//----------------------------------------------------------------------------- + +#ifdef __WXMOTIF__ +#ifdef __VMS__ +#pragma message disable nosimpint +#endif +#include +#ifdef __VMS__ +#pragma message enable nosimpint +#endif +#include "wx/utils.h" +#include + +/* + +Date: Wed, 05 Jan 2000 11:45:40 +0100 +From: Frits Boel +To: julian.smart@ukonline.co.uk +Subject: Patch for Motif ConvertToBitmap + +Hi Julian, + +I've been working on a wxWin application for image processing. From the +beginning, I was surprised by the (lack of) speed of ConvertToBitmap, +till I looked in the source code of image.cpp. I saw that converting a +wxImage to a bitmap with 8-bit pixels is done with comparing every pixel +to the 256 colors of the palet. A very time-consuming piece of code! + +Because I wanted a faster application, I've made a 'patch' for this. In +short: every pixel of the image is compared to a sorted list with +colors. If the color is found in the list, the palette entry is +returned; if the color is not found, the color palette is searched and +then the palette entry is returned and the color added to the sorted +list. + +Maybe there is another method for this, namely changing the palette +itself (if the colors are known, as is the case with tiffs with a +colormap). I did not look at this, maybe someone else did? + +The code of the patch is attached, have a look on it, and maybe you will +ship it with the next release of wxMotif? + +Regards, + +Frits Boel +Software engineer at Hubrecht Laboratory, The Netherlands. + +*/ + +class wxSearchColor +{ +public: + wxSearchColor( void ); + wxSearchColor( int size, XColor *colors ); + ~wxSearchColor( void ); + + int SearchColor( int r, int g, int b ); +private: + int AddColor( unsigned int value, int pos ); + + int size; + XColor *colors; + unsigned int *color; + int *entry; + + int bottom; + int top; +}; + +wxSearchColor::wxSearchColor( void ) +{ + size = 0; + colors = (XColor*) NULL; + color = (unsigned int *) NULL; + entry = (int*) NULL; + + bottom = 0; + top = 0; +} + +wxSearchColor::wxSearchColor( int size_, XColor *colors_ ) +{ + int i; + size = size_; + colors = colors_; + color = new unsigned int[size]; + entry = new int [size]; + + for (i = 0; i < size; i++ ) { + entry[i] = -1; + } + + bottom = top = ( size >> 1 ); +} + +wxSearchColor::~wxSearchColor( void ) +{ + if ( color ) delete color; + if ( entry ) delete entry; +} + +int wxSearchColor::SearchColor( int r, int g, int b ) +{ + unsigned int value = ( ( ( r * 256 ) + g ) * 256 ) + b; + int begin = bottom; + int end = top; + int middle; + + while ( begin <= end ) { + + middle = ( begin + end ) >> 1; + + if ( value == color[middle] ) { + return( entry[middle] ); + } else if ( value < color[middle] ) { + end = middle - 1; + } else { + begin = middle + 1; + } + + } + + return AddColor( value, middle ); +} + +int wxSearchColor::AddColor( unsigned int value, int pos ) +{ + int i; + int pixel = -1; + int max = 3 * (65536); + for ( i = 0; i < 256; i++ ) { + int rdiff = ((value >> 8) & 0xFF00 ) - colors[i].red; + int gdiff = ((value ) & 0xFF00 ) - colors[i].green; + int bdiff = ((value << 8) & 0xFF00 ) - colors[i].blue; + int sum = abs (rdiff) + abs (gdiff) + abs (bdiff); + if (sum < max) { pixel = i; max = sum; } + } + + if ( entry[pos] < 0 ) { + color[pos] = value; + entry[pos] = pixel; + } else if ( value < color[pos] ) { + + if ( bottom > 0 ) { + for ( i = bottom; i < pos; i++ ) { + color[i-1] = color[i]; + entry[i-1] = entry[i]; + } + bottom--; + color[pos-1] = value; + entry[pos-1] = pixel; + } else if ( top < size-1 ) { + for ( i = top; i >= pos; i-- ) { + color[i+1] = color[i]; + entry[i+1] = entry[i]; + } + top++; + color[pos] = value; + entry[pos] = pixel; + } + + } else { + + if ( top < size-1 ) { + for ( i = top; i > pos; i-- ) { + color[i+1] = color[i]; + entry[i+1] = entry[i]; + } + top++; + color[pos+1] = value; + entry[pos+1] = pixel; + } else if ( bottom > 0 ) { + for ( i = bottom; i < pos; i++ ) { + color[i-1] = color[i]; + entry[i-1] = entry[i]; + } + bottom--; + color[pos] = value; + entry[pos] = pixel; + } + + } + + return( pixel ); +} + +wxBitmap wxImage::ConvertToBitmap() const +{ + wxBitmap bitmap; + + wxCHECK_MSG( Ok(), bitmap, wxT("invalid image") ); + + int width = GetWidth(); + int height = GetHeight(); + + bitmap.SetHeight( height ); + bitmap.SetWidth( width ); + + Display *dpy = (Display*) wxGetDisplay(); + Visual* vis = DefaultVisual( dpy, DefaultScreen( dpy ) ); + int bpp = DefaultDepth( dpy, DefaultScreen( dpy ) ); + + // Create image + + XImage *data_image = XCreateImage( dpy, vis, bpp, ZPixmap, 0, 0, width, height, 32, 0 ); + data_image->data = (char*) malloc( data_image->bytes_per_line * data_image->height ); + + bitmap.Create( width, height, bpp ); + + // Create mask + + XImage *mask_image = (XImage*) NULL; + if (HasMask()) + { + mask_image = XCreateImage( dpy, vis, 1, ZPixmap, 0, 0, width, height, 32, 0 ); + mask_image->data = (char*) malloc( mask_image->bytes_per_line * mask_image->height ); + } + + // Retrieve depth info + + XVisualInfo vinfo_template; + XVisualInfo *vi; + + vinfo_template.visual = vis; + vinfo_template.visualid = XVisualIDFromVisual( vis ); + vinfo_template.depth = bpp; + int nitem = 0; + + vi = XGetVisualInfo( dpy, VisualIDMask|VisualDepthMask, &vinfo_template, &nitem ); + + wxCHECK_MSG( vi, wxNullBitmap, wxT("no visual") ); + + XFree( vi ); + + if ((bpp == 16) && (vi->red_mask != 0xf800)) bpp = 15; + if (bpp < 8) bpp = 8; + + // Render + + enum byte_order { RGB, RBG, BRG, BGR, GRB, GBR }; + byte_order b_o = RGB; + + if (bpp >= 24) + { + if ((vi->red_mask > vi->green_mask) && (vi->green_mask > vi->blue_mask)) b_o = RGB; + else if ((vi->red_mask > vi->blue_mask) && (vi->blue_mask > vi->green_mask)) b_o = RGB; + else if ((vi->blue_mask > vi->red_mask) && (vi->red_mask > vi->green_mask)) b_o = BRG; + else if ((vi->blue_mask > vi->green_mask) && (vi->green_mask > vi->red_mask)) b_o = BGR; + else if ((vi->green_mask > vi->red_mask) && (vi->red_mask > vi->blue_mask)) b_o = GRB; + else if ((vi->green_mask > vi->blue_mask) && (vi->blue_mask > vi->red_mask)) b_o = GBR; + } + + int r_mask = GetMaskRed(); + int g_mask = GetMaskGreen(); + int b_mask = GetMaskBlue(); + + XColor colors[256]; + if (bpp == 8) + { + Colormap cmap = (Colormap) wxTheApp->GetMainColormap( dpy ); + + for (int i = 0; i < 256; i++) colors[i].pixel = i; + XQueryColors( dpy, cmap, colors, 256 ); + } + + wxSearchColor scolor( 256, colors ); + unsigned char* data = GetData(); + + bool hasMask = HasMask(); + + int index = 0; + for (int y = 0; y < height; y++) + { + for (int x = 0; x < width; x++) + { + int r = data[index]; + index++; + int g = data[index]; + index++; + int b = data[index]; + index++; + + if (hasMask) + { + if ((r == r_mask) && (b == b_mask) && (g == g_mask)) + XPutPixel( mask_image, x, y, 0 ); + else + XPutPixel( mask_image, x, y, 1 ); + } + + switch (bpp) + { + case 8: + { +#if 0 // Old, slower code + int pixel = -1; + /* + if (wxTheApp->m_colorCube) + { + pixel = wxTheApp->m_colorCube + [ ((r & 0xf8) << 7) + ((g & 0xf8) << 2) + ((b & 0xf8) >> 3) ]; + } + else + { + */ + int max = 3 * (65536); + for (int i = 0; i < 256; i++) + { + int rdiff = (r << 8) - colors[i].red; + int gdiff = (g << 8) - colors[i].green; + int bdiff = (b << 8) - colors[i].blue; + int sum = abs (rdiff) + abs (gdiff) + abs (bdiff); + if (sum < max) { pixel = i; max = sum; } + } + /* + } + */ +#endif + + // And this is all to get the 'right' color... + int pixel = scolor.SearchColor( r, g, b ); + XPutPixel( data_image, x, y, pixel ); + break; + } + case 15: + { + int pixel = ((r & 0xf8) << 7) | ((g & 0xf8) << 2) | ((b & 0xf8) >> 3); + XPutPixel( data_image, x, y, pixel ); + break; + } + case 16: + { + int pixel = ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | ((b & 0xf8) >> 3); + XPutPixel( data_image, x, y, pixel ); + break; + } + case 32: + case 24: + { + int pixel = 0; + switch (b_o) + { + case RGB: pixel = (r << 16) | (g << 8) | b; break; + case RBG: pixel = (r << 16) | (b << 8) | g; break; + case BRG: pixel = (b << 16) | (r << 8) | g; break; + case BGR: pixel = (b << 16) | (g << 8) | r; break; + case GRB: pixel = (g << 16) | (r << 8) | b; break; + case GBR: pixel = (g << 16) | (b << 8) | r; break; + } + XPutPixel( data_image, x, y, pixel ); + } + default: break; + } + } // for + } // for + + // Blit picture + + XGCValues gcvalues; + gcvalues.foreground = BlackPixel( dpy, DefaultScreen( dpy ) ); + GC gc = XCreateGC( dpy, RootWindow ( dpy, DefaultScreen(dpy) ), GCForeground, &gcvalues ); + XPutImage( dpy, (Drawable)bitmap.GetPixmap(), gc, data_image, 0, 0, 0, 0, width, height ); + + XDestroyImage( data_image ); + XFreeGC( dpy, gc ); + + // Blit mask + if (HasMask()) + { + wxBitmap maskBitmap(width, height, 1); + + GC gcMask = XCreateGC( dpy, (Pixmap) maskBitmap.GetPixmap(), (XtGCMask) 0, (XGCValues*)NULL ); + XPutImage( dpy, (Drawable)maskBitmap.GetPixmap(), gcMask, mask_image, 0, 0, 0, 0, width, height ); + + XDestroyImage( mask_image ); + XFreeGC( dpy, gcMask ); + + wxMask* mask = new wxMask; + mask->SetPixmap(maskBitmap.GetPixmap()); + + bitmap.SetMask(mask); + + maskBitmap.SetPixmapNull(); + } + + return bitmap; +} + +wxImage::wxImage( const wxBitmap &bitmap ) +{ + wxCHECK_RET( bitmap.Ok(), wxT("invalid bitmap") ); + + Display *dpy = (Display*) wxGetDisplay(); + Visual* vis = DefaultVisual( dpy, DefaultScreen( dpy ) ); + int bpp = DefaultDepth( dpy, DefaultScreen( dpy ) ); + + XImage *ximage = XGetImage( dpy, + (Drawable)bitmap.GetPixmap(), + 0, 0, + bitmap.GetWidth(), bitmap.GetHeight(), + AllPlanes, ZPixmap ); + + wxCHECK_RET( ximage, wxT("couldn't create image") ); + + Create( bitmap.GetWidth(), bitmap.GetHeight() ); + char unsigned *data = GetData(); + + if (!data) + { + XDestroyImage( ximage ); + wxFAIL_MSG( wxT("couldn't create image") ); + return; + } + + /* + GdkImage *gdk_image_mask = (GdkImage*) NULL; + if (bitmap.GetMask()) + { + gdk_image_mask = gdk_image_get( bitmap.GetMask()->GetBitmap(), + 0, 0, + bitmap.GetWidth(), bitmap.GetHeight() ); + + SetMaskColour( 16, 16, 16 ); // anything unlikely and dividable + } + */ + + // Retrieve depth info + + XVisualInfo vinfo_template; + XVisualInfo *vi; + + vinfo_template.visual = vis; + vinfo_template.visualid = XVisualIDFromVisual( vis ); + vinfo_template.depth = bpp; + int nitem = 0; + + vi = XGetVisualInfo( dpy, VisualIDMask|VisualDepthMask, &vinfo_template, &nitem ); + + wxCHECK_RET( vi, wxT("no visual") ); + + if ((bpp == 16) && (vi->red_mask != 0xf800)) bpp = 15; + + XFree( vi ); + + XColor colors[256]; + if (bpp == 8) + { + Colormap cmap = (Colormap)wxTheApp->GetMainColormap( dpy ); + + for (int i = 0; i < 256; i++) colors[i].pixel = i; + XQueryColors( dpy, cmap, colors, 256 ); + } + + long pos = 0; + for (int j = 0; j < bitmap.GetHeight(); j++) + { + for (int i = 0; i < bitmap.GetWidth(); i++) { - int pixel = gdk_image_get_pixel( gdk_image, i, j ); + int pixel = XGetPixel( ximage, i, j ); if (bpp <= 8) { - data[pos] = cmap->colors[pixel].red >> 8; - data[pos+1] = cmap->colors[pixel].green >> 8; - data[pos+2] = cmap->colors[pixel].blue >> 8; + data[pos] = colors[pixel].red >> 8; + data[pos+1] = colors[pixel].green >> 8; + data[pos+2] = colors[pixel].blue >> 8; } else if (bpp == 15) { data[pos] = (pixel >> 7) & 0xf8; @@ -1702,356 +2217,715 @@ wxImage::wxImage( const wxBitmap &bitmap ) data[pos+2] = pixel & 0xff; } + /* if (gdk_image_mask) { - int mask_pixel = gdk_image_get_pixel( gdk_image_mask, i, j ); - if (mask_pixel == 0) - { - data[pos] = 16; - data[pos+1] = 16; - data[pos+2] = 16; - } + int mask_pixel = gdk_image_get_pixel( gdk_image_mask, i, j ); + if (mask_pixel == 0) + { + data[pos] = 16; + data[pos+1] = 16; + data[pos+2] = 16; + } } + */ pos += 3; } } - - gdk_image_destroy( gdk_image ); - if (gdk_image_mask) gdk_image_destroy( gdk_image_mask ); + + XDestroyImage( ximage ); + /* + if (gdk_image_mask) gdk_image_destroy( gdk_image_mask ); + */ +} +#endif + +#ifdef __WXPM__ +// OS/2 Presentation manager conversion routings + +wxBitmap wxImage::ConvertToBitmap() const +{ + if ( !Ok() ) + return wxNullBitmap; + wxBitmap bitmap; // remove +// TODO: +/* + int sizeLimit = 1024*768*3; + + // width and height of the device-dependent bitmap + int width = GetWidth(); + int bmpHeight = 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 + wxBitmap bitmap; + wxCHECK_MSG( Ok(), bitmap, wxT("invalid image") ); + bitmap.SetWidth( width ); + bitmap.SetHeight( bmpHeight ); + bitmap.SetDepth( wxDisplayDepth() ); + + // create a DIB header + int headersize = sizeof(BITMAPINFOHEADER); + LPBITMAPINFO lpDIBh = (BITMAPINFO *) malloc( headersize ); + wxCHECK_MSG( lpDIBh, bitmap, 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 bitmap; + } + + // 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); + + // copy image data into DIB data and then into DDB (in a loop) + unsigned char *data = 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 ); + } + bitmap.SetHBITMAP( (WXHBITMAP) hbitmap ); + + // similarly, created an mono-bitmap for the possible mask + if( HasMask() ) + { + hbitmap = ::CreateBitmap( (WORD)width, (WORD)bmpHeight, 1, 1, NULL ); + ::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 = GetMaskRed(); + unsigned char g = GetMaskGreen(); + unsigned char b = 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 ); + bitmap.SetMask( mask ); + } + + // free allocated resources + ::SelectObject( memdc, 0 ); + ::DeleteDC( memdc ); + ::ReleaseDC(NULL, hdc); + free(lpDIBh); + free(lpBits); + + // check the wxBitmap object + if( bitmap.GetHBITMAP() ) + bitmap.SetOk( TRUE ); + else + bitmap.SetOk( FALSE ); +*/ + return bitmap; +} + +wxImage::wxImage( const wxBitmap &bitmap ) +{ + // check the bitmap + if( !bitmap.Ok() ) + { + wxFAIL_MSG( wxT("invalid bitmap") ); + return; + } + + // create an wxImage object + int width = bitmap.GetWidth(); + int height = bitmap.GetHeight(); + Create( width, height ); + unsigned char *data = GetData(); + if( !data ) + { + wxFAIL_MSG( wxT("could not allocate data for image") ); + return; + } + + // 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; + } +// TODO: +/* + // create a DIB header + int headersize = sizeof(BITMAPINFOHEADER); + LPBITMAPINFO lpDIBh = (BITMAPINFO *) malloc( headersize ); + if( !lpDIBh ) + { + wxFAIL_MSG( wxT("could not allocate data for DIB header") ); + free( data ); + return; + } + // 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; + } + + // copy data from the device-dependent bitmap to the DIB + HDC hdc = ::GetDC(NULL); + HBITMAP hbitmap; + hbitmap = (HBITMAP) bitmap.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) bitmap.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 -#include "wx/utils.h" -#include +// A module to allow wxImage initialization/cleanup +// without calling these functions from app.cpp or from +// the user's application. -wxBitmap wxImage::ConvertToBitmap() const +class wxImageModule: public wxModule { - wxBitmap bitmap; - - wxCHECK_MSG( Ok(), bitmap, "invalid image" ); +DECLARE_DYNAMIC_CLASS(wxImageModule) +public: + wxImageModule() {} + bool OnInit() { wxImage::InitStandardHandlers(); return TRUE; }; + void OnExit() { wxImage::CleanUpHandlers(); }; +}; - int width = GetWidth(); - int height = GetHeight(); +IMPLEMENT_DYNAMIC_CLASS(wxImageModule, wxModule) - bitmap.SetHeight( height ); - bitmap.SetWidth( width ); - Display *dpy = (Display*) wxGetDisplay(); - Visual* vis = DefaultVisual( dpy, DefaultScreen( dpy ) ); - int bpp = DefaultDepth( dpy, DefaultScreen( dpy ) ); +//----------------------------------------------------------------------------- - // Create image - - XImage *data_image = XCreateImage( dpy, vis, bpp, ZPixmap, 0, 0, width, height, 32, 0 ); - data_image->data = new char[ data_image->bytes_per_line * data_image->height ]; +// GRG, Dic/99 +// Counts and returns the number of different colours. Optionally stops +// when it exceeds 'stopafter' different colours. This is useful, for +// example, to see if the image can be saved as 8-bit (256 colour or +// less, in this case it would be invoked as CountColours(256)). Default +// value for stopafter is -1 (don't care). +// +unsigned long wxImage::CountColours( unsigned long stopafter ) +{ + wxHashTable h; + wxObject dummy; + unsigned char r, g, b, *p; + unsigned long size, nentries, key; - bitmap.Create( width, height, bpp ); + p = GetData(); + size = GetWidth() * GetHeight(); + nentries = 0; -/* - // Create mask + for (unsigned long j = 0; (j < size) && (nentries <= stopafter) ; j++) + { + r = *(p++); + g = *(p++); + b = *(p++); + key = (r << 16) | (g << 8) | b; - GdkImage *mask_image = (GdkImage*) NULL; + if (h.Get(key) == NULL) + { + h.Put(key, &dummy); + nentries++; + } + } - if (HasMask()) - { - unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height ); + return nentries; +} - mask_image = gdk_image_new_bitmap( gdk_visual_get_system(), mask_data, width, height ); - wxMask *mask = new wxMask(); - mask->m_bitmap = gdk_pixmap_new( (GdkWindow*)&gdk_root_parent, width, height, 1 ); +// GRG, Dic/99 +// Computes the histogram of the image and fills a hash table, indexed +// with integer keys built as 0xRRGGBB, containing wxHNode objects. Each +// wxHNode contains an 'index' (useful to build a palette with the image +// colours) and a 'value', which is the number of pixels in the image with +// that colour. +// +unsigned long wxImage::ComputeHistogram( wxHashTable &h ) +{ + unsigned char r, g, b, *p; + unsigned long size, nentries, key; + wxHNode *hnode; - bitmap.SetMask( mask ); - } -*/ + p = GetData(); + size = GetWidth() * GetHeight(); + nentries = 0; - // Retrieve depth info - - XVisualInfo vinfo_template; - XVisualInfo *vi; - - vinfo_template.visual = vis; - vinfo_template.visualid = XVisualIDFromVisual( vis ); - vinfo_template.depth = bpp; - int nitem = 0; - - vi = XGetVisualInfo( dpy, VisualIDMask|VisualDepthMask, &vinfo_template, &nitem ); - - if (!vi) + for (unsigned long j = 0; j < size; j++) { - printf("no visual.\n" ); - return wxNullBitmap; - } - - XFree( vi ); - - if ((bpp == 16) && (vi->red_mask != 0xf800)) bpp = 15; - if (bpp < 8) bpp = 8; + r = *(p++); + g = *(p++); + b = *(p++); + key = (r << 16) | (g << 8) | b; - // Render + hnode = (wxHNode *) h.Get(key); - enum byte_order { RGB, RBG, BRG, BGR, GRB, GBR }; - byte_order b_o = RGB; + if (hnode) + hnode->value++; + else + { + hnode = new wxHNode(); + hnode->index = nentries++; + hnode->value = 1; - if (bpp >= 24) - { - if ((vi->red_mask > vi->green_mask) && (vi->green_mask > vi->blue_mask)) b_o = RGB; - else if ((vi->red_mask > vi->blue_mask) && (vi->blue_mask > vi->green_mask)) b_o = RGB; - else if ((vi->blue_mask > vi->red_mask) && (vi->red_mask > vi->green_mask)) b_o = BRG; - else if ((vi->blue_mask > vi->green_mask) && (vi->green_mask > vi->red_mask)) b_o = BGR; - else if ((vi->green_mask > vi->red_mask) && (vi->red_mask > vi->blue_mask)) b_o = GRB; - else if ((vi->green_mask > vi->blue_mask) && (vi->blue_mask > vi->red_mask)) b_o = GBR; + h.Put(key, (wxObject *)hnode); + } } + return nentries; +} + /* - int r_mask = GetMaskRed(); - int g_mask = GetMaskGreen(); - int b_mask = GetMaskBlue(); -*/ + * Rotation code by Carlos Moreno + */ - XColor colors[256]; - if (bpp == 8) - { - Colormap cmap = (Colormap) wxTheApp->GetMainColormap( dpy ); - - for (int i = 0; i < 256; i++) colors[i].pixel = i; - XQueryColors( dpy, cmap, colors, 256 ); - } +// GRG: I've removed wxRotationPoint - we already have wxRealPoint which +// does exactly the same thing. And I also got rid of wxRotationPixel +// bacause of potential problems in architectures where alignment +// is an issue, so I had to rewrite parts of the code. - unsigned char* data = GetData(); +static const double gs_Epsilon = 1e-10; - int index = 0; - for (int y = 0; y < height; y++) - { - for (int x = 0; x < width; x++) - { - int r = data[index]; - index++; - int g = data[index]; - index++; - int b = data[index]; - index++; +static inline int wxCint (double x) +{ + return (x > 0) ? (int) (x + 0.5) : (int) (x - 0.5); +} -/* - if (HasMask()) - { - if ((r == r_mask) && (b == b_mask) && (g == g_mask)) - gdk_image_put_pixel( mask_image, x, y, 1 ); - else - gdk_image_put_pixel( mask_image, x, y, 0 ); - } -*/ - switch (bpp) - { - case 8: - { - int pixel = -1; -/* - if (wxTheApp->m_colorCube) - { - pixel = wxTheApp->m_colorCube - [ ((r & 0xf8) << 7) + ((g & 0xf8) << 2) + ((b & 0xf8) >> 3) ]; - } - else - { -*/ - int max = 3 * (65536); - for (int i = 0; i < 256; i++) - { - int rdiff = (r << 8) - colors[i].red; - int gdiff = (g << 8) - colors[i].green; - int bdiff = (b << 8) - colors[i].blue; - int sum = abs (rdiff) + abs (gdiff) + abs (bdiff); - if (sum < max) { pixel = i; max = sum; } - } -/* - } -*/ - XPutPixel( data_image, x, y, pixel ); - break; - } - case 15: - { - int pixel = ((r & 0xf8) << 7) | ((g & 0xf8) << 2) | ((b & 0xf8) >> 3); - XPutPixel( data_image, x, y, pixel ); - break; - } - case 16: - { - int pixel = ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | ((b & 0xf8) >> 3); - XPutPixel( data_image, x, y, pixel ); - break; - } - case 32: - case 24: - { - int pixel = 0; - switch (b_o) - { - case RGB: pixel = (r << 16) | (g << 8) | b; break; - case RBG: pixel = (r << 16) | (b << 8) | g; break; - case BRG: pixel = (b << 16) | (r << 8) | g; break; - case BGR: pixel = (b << 16) | (g << 8) | r; break; - case GRB: pixel = (g << 16) | (r << 8) | b; break; - case GBR: pixel = (g << 16) | (b << 8) | r; break; - } - XPutPixel( data_image, x, y, pixel ); - } - default: break; - } - } // for - } // for +// Auxiliary function to rotate a point (x,y) with respect to point p0 +// make it inline and use a straight return to facilitate optimization +// also, the function receives the sine and cosine of the angle to avoid +// repeating the time-consuming calls to these functions -- sin/cos can +// be computed and stored in the calling function. - // Blit picture +inline wxRealPoint rotated_point (const wxRealPoint & p, double cos_angle, double sin_angle, const wxRealPoint & p0) +{ + return wxRealPoint (p0.x + (p.x - p0.x) * cos_angle - (p.y - p0.y) * sin_angle, + p0.y + (p.y - p0.y) * cos_angle + (p.x - p0.x) * sin_angle); +} - XGCValues gcvalues; - gcvalues.foreground = BlackPixel( dpy, DefaultScreen( dpy ) ); - GC gc = XCreateGC( dpy, RootWindow ( dpy, DefaultScreen(dpy) ), GCForeground, &gcvalues ); - XPutImage( dpy, (Drawable)bitmap.GetPixmap(), gc, data_image, 0, 0, 0, 0, width, height ); +inline wxRealPoint rotated_point (double x, double y, double cos_angle, double sin_angle, const wxRealPoint & p0) +{ + return rotated_point (wxRealPoint(x,y), cos_angle, sin_angle, p0); +} - XDestroyImage( data_image ); - XFreeGC( dpy, gc ); +wxImage wxImage::Rotate(double angle, const wxPoint & centre_of_rotation, bool interpolating, wxPoint * offset_after_rotation) const +{ + int i; + angle = -angle; // screen coordinates are a mirror image of "real" coordinates -/* - // Blit mask + // Create pointer-based array to accelerate access to wxImage's data + unsigned char ** data = new unsigned char * [GetHeight()]; - if (HasMask()) - { - GdkGC *mask_gc = gdk_gc_new( bitmap.GetMask()->GetBitmap() ); + data[0] = GetData(); - gdk_draw_image( bitmap.GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height ); + for (i = 1; i < GetHeight(); i++) + data[i] = data[i - 1] + (3 * GetWidth()); - gdk_image_destroy( mask_image ); - gdk_gc_unref( mask_gc ); - } -*/ + // precompute coefficients for rotation formula + // (sine and cosine of the angle) + const double cos_angle = cos(angle); + const double sin_angle = sin(angle); - return bitmap; -} + // Create new Image to store the result + // First, find rectangle that covers the rotated image; to do that, + // rotate the four corners -wxImage::wxImage( const wxBitmap &bitmap ) -{ - wxCHECK_RET( bitmap.Ok(), "invalid bitmap" ); + const wxRealPoint p0(centre_of_rotation.x, centre_of_rotation.y); - Display *dpy = (Display*) wxGetDisplay(); - Visual* vis = DefaultVisual( dpy, DefaultScreen( dpy ) ); - int bpp = DefaultDepth( dpy, DefaultScreen( dpy ) ); - - XImage *ximage = XGetImage( dpy, - (Drawable)bitmap.GetPixmap(), - 0, 0, - bitmap.GetWidth(), bitmap.GetHeight(), - AllPlanes, ZPixmap ); + wxRealPoint p1 = rotated_point (0, 0, cos_angle, sin_angle, p0); + wxRealPoint p2 = rotated_point (0, GetHeight(), cos_angle, sin_angle, p0); + wxRealPoint p3 = rotated_point (GetWidth(), 0, cos_angle, sin_angle, p0); + wxRealPoint p4 = rotated_point (GetWidth(), GetHeight(), cos_angle, sin_angle, p0); - wxCHECK_RET( ximage, "couldn't create image" ); + int x1 = (int) floor (wxMin (wxMin(p1.x, p2.x), wxMin(p3.x, p4.x))); + int y1 = (int) floor (wxMin (wxMin(p1.y, p2.y), wxMin(p3.y, p4.y))); + int x2 = (int) ceil (wxMax (wxMax(p1.x, p2.x), wxMax(p3.x, p4.x))); + int y2 = (int) ceil (wxMax (wxMax(p1.y, p2.y), wxMax(p3.y, p4.y))); - Create( bitmap.GetWidth(), bitmap.GetHeight() ); - char unsigned *data = GetData(); + wxImage rotated (x2 - x1 + 1, y2 - y1 + 1); - if (!data) + if (offset_after_rotation != NULL) { - XDestroyImage( ximage ); - wxFAIL_MSG( "couldn't create image" ); - return; + *offset_after_rotation = wxPoint (x1, y1); } -/* - GdkImage *gdk_image_mask = (GdkImage*) NULL; - if (bitmap.GetMask()) - { - gdk_image_mask = gdk_image_get( bitmap.GetMask()->GetBitmap(), - 0, 0, - bitmap.GetWidth(), bitmap.GetHeight() ); + // GRG: The rotated (destination) image is always accessed + // sequentially, so there is no need for a pointer-based + // array here (and in fact it would be slower). + // + unsigned char * dst = rotated.GetData(); - SetMaskColour( 16, 16, 16 ); // anything unlikely and dividable - } -*/ + // GRG: if the original image has a mask, use its RGB values + // as the blank pixel, else, fall back to default (black). + // + unsigned char blank_r = 0; + unsigned char blank_g = 0; + unsigned char blank_b = 0; - // Retrieve depth info - - XVisualInfo vinfo_template; - XVisualInfo *vi; - - vinfo_template.visual = vis; - vinfo_template.visualid = XVisualIDFromVisual( vis ); - vinfo_template.depth = bpp; - int nitem = 0; - - vi = XGetVisualInfo( dpy, VisualIDMask|VisualDepthMask, &vinfo_template, &nitem ); - - if (!vi) + if (HasMask()) { - printf("no visual.\n" ); - return; + blank_r = GetMaskRed(); + blank_g = GetMaskGreen(); + blank_b = GetMaskBlue(); + rotated.SetMaskColour( blank_r, blank_g, blank_b ); } - - if ((bpp == 16) && (vi->red_mask != 0xf800)) bpp = 15; - - XFree( vi ); - XColor colors[256]; - if (bpp == 8) - { - Colormap cmap = (Colormap)wxTheApp->GetMainColormap( dpy ); - - for (int i = 0; i < 256; i++) colors[i].pixel = i; - XQueryColors( dpy, cmap, colors, 256 ); - } + // Now, for each point of the rotated image, find where it came from, by + // performing an inverse rotation (a rotation of -angle) and getting the + // pixel at those coordinates - long pos = 0; - for (int j = 0; j < bitmap.GetHeight(); j++) + // GRG: I've taken the (interpolating) test out of the loops, so that + // it is done only once, instead of repeating it for each pixel. + + int x; + if (interpolating) { - for (int i = 0; i < bitmap.GetWidth(); i++) + for (int y = 0; y < rotated.GetHeight(); y++) { - int pixel = XGetPixel( ximage, i, j ); - if (bpp <= 8) - { - data[pos] = colors[pixel].red >> 8; - data[pos+1] = colors[pixel].green >> 8; - data[pos+2] = colors[pixel].blue >> 8; - } else if (bpp == 15) - { - data[pos] = (pixel >> 7) & 0xf8; - data[pos+1] = (pixel >> 2) & 0xf8; - data[pos+2] = (pixel << 3) & 0xf8; - } else if (bpp == 16) - { - data[pos] = (pixel >> 8) & 0xf8; - data[pos+1] = (pixel >> 3) & 0xfc; - data[pos+2] = (pixel << 3) & 0xf8; - } else + for (x = 0; x < rotated.GetWidth(); x++) { - data[pos] = (pixel >> 16) & 0xff; - data[pos+1] = (pixel >> 8) & 0xff; - data[pos+2] = pixel & 0xff; - } + wxRealPoint src = rotated_point (x + x1, y + y1, cos_angle, -sin_angle, p0); -/* - if (gdk_image_mask) - { - int mask_pixel = gdk_image_get_pixel( gdk_image_mask, i, j ); - if (mask_pixel == 0) + if (-0.25 < src.x && src.x < GetWidth() - 0.75 && + -0.25 < src.y && src.y < GetHeight() - 0.75) { - data[pos] = 16; - data[pos+1] = 16; - data[pos+2] = 16; - } + // interpolate using the 4 enclosing grid-points. Those + // points can be obtained using floor and ceiling of the + // exact coordinates of the point + // C.M. 2000-02-17: when the point is near the border, special care is required. + + int x1, y1, x2, y2; + + if (0 < src.x && src.x < GetWidth() - 1) + { + x1 = wxCint(floor(src.x)); + x2 = wxCint(ceil(src.x)); + } + else // else means that x is near one of the borders (0 or width-1) + { + x1 = x2 = wxCint (src.x); + } + + if (0 < src.y && src.y < GetHeight() - 1) + { + y1 = wxCint(floor(src.y)); + y2 = wxCint(ceil(src.y)); + } + else + { + y1 = y2 = wxCint (src.y); + } + + // get four points and the distances (square of the distance, + // for efficiency reasons) for the interpolation formula + + // GRG: Do not calculate the points until they are + // really needed -- this way we can calculate + // just one, instead of four, if d1, d2, d3 + // or d4 are < gs_Epsilon + + const double d1 = (src.x - x1) * (src.x - x1) + (src.y - y1) * (src.y - y1); + const double d2 = (src.x - x2) * (src.x - x2) + (src.y - y1) * (src.y - y1); + const double d3 = (src.x - x2) * (src.x - x2) + (src.y - y2) * (src.y - y2); + const double d4 = (src.x - x1) * (src.x - x1) + (src.y - y2) * (src.y - y2); + + // Now interpolate as a weighted average of the four surrounding + // points, where the weights are the distances to each of those points + + // If the point is exactly at one point of the grid of the source + // image, then don't interpolate -- just assign the pixel + + if (d1 < gs_Epsilon) // d1,d2,d3,d4 are positive -- no need for abs() + { + unsigned char *p = data[y1] + (3 * x1); + *(dst++) = *(p++); + *(dst++) = *(p++); + *(dst++) = *(p++); + } + else if (d2 < gs_Epsilon) + { + unsigned char *p = data[y1] + (3 * x2); + *(dst++) = *(p++); + *(dst++) = *(p++); + *(dst++) = *(p++); + } + else if (d3 < gs_Epsilon) + { + unsigned char *p = data[y2] + (3 * x2); + *(dst++) = *(p++); + *(dst++) = *(p++); + *(dst++) = *(p++); + } + else if (d4 < gs_Epsilon) + { + unsigned char *p = data[y2] + (3 * x1); + *(dst++) = *(p++); + *(dst++) = *(p++); + *(dst++) = *(p++); + } + else + { + // weights for the weighted average are proportional to the inverse of the distance + unsigned char *v1 = data[y1] + (3 * x1); + unsigned char *v2 = data[y1] + (3 * x2); + unsigned char *v3 = data[y2] + (3 * x2); + unsigned char *v4 = data[y2] + (3 * x1); + + const double w1 = 1/d1, w2 = 1/d2, w3 = 1/d3, w4 = 1/d4; + + // GRG: Unrolled. + + *(dst++) = (unsigned char) + ( (w1 * *(v1++) + w2 * *(v2++) + + w3 * *(v3++) + w4 * *(v4++)) / + (w1 + w2 + w3 + w4) ); + *(dst++) = (unsigned char) + ( (w1 * *(v1++) + w2 * *(v2++) + + w3 * *(v3++) + w4 * *(v4++)) / + (w1 + w2 + w3 + w4) ); + *(dst++) = (unsigned char) + ( (w1 * *(v1++) + w2 * *(v2++) + + w3 * *(v3++) + w4 * *(v4++)) / + (w1 + w2 + w3 + w4) ); + } + } + else + { + *(dst++) = blank_r; + *(dst++) = blank_g; + *(dst++) = blank_b; + } } -*/ + } + } + else // not interpolating + { + for (int y = 0; y < rotated.GetHeight(); y++) + { + for (x = 0; x < rotated.GetWidth(); x++) + { + wxRealPoint src = rotated_point (x + x1, y + y1, cos_angle, -sin_angle, p0); - pos += 3; + const int xs = wxCint (src.x); // wxCint rounds to the + const int ys = wxCint (src.y); // closest integer + + if (0 <= xs && xs < GetWidth() && + 0 <= ys && ys < GetHeight()) + { + unsigned char *p = data[ys] + (3 * xs); + *(dst++) = *(p++); + *(dst++) = *(p++); + *(dst++) = *(p++); + } + else + { + *(dst++) = blank_r; + *(dst++) = blank_g; + *(dst++) = blank_b; + } + } } } - XDestroyImage( ximage ); -/* - if (gdk_image_mask) gdk_image_destroy( gdk_image_mask ); -*/ + delete [] data; + + return rotated; } -#endif +