X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/888355224cee2209bf9fde2c10cc770a7d819ad8..3b241537efde9ed3b5b6c1fb0756f00517e0bbd9:/src/common/image.cpp diff --git a/src/common/image.cpp b/src/common/image.cpp index 2b43ad042c..cbe275bc19 100644 --- a/src/common/image.cpp +++ b/src/common/image.cpp @@ -30,10 +30,7 @@ #include "wx/filefn.h" #include "wx/wfstream.h" - -#if wxUSE_XPM - #include "wx/xpmdecod.h" -#endif +#include "wx/xpmdecod.h" // For memcpy #include @@ -42,17 +39,28 @@ #define HAS_FILE_STREAMS (wxUSE_STREAMS && (wxUSE_FILE || wxUSE_FFILE)) #if HAS_FILE_STREAMS - #if wxUSE_FILE - typedef wxFileInputStream wxImageFileInputStream; - typedef wxFileOutputStream wxImageFileOutputStream; - #elif wxUSE_FFILE + #if wxUSE_FFILE typedef wxFFileInputStream wxImageFileInputStream; typedef wxFFileOutputStream wxImageFileOutputStream; + #elif wxUSE_FILE + typedef wxFileInputStream wxImageFileInputStream; + typedef wxFileOutputStream wxImageFileOutputStream; #endif // wxUSE_FILE/wxUSE_FFILE #endif // HAS_FILE_STREAMS +#if wxUSE_VARIANT +IMPLEMENT_VARIANT_OBJECT_EXPORTED_SHALLOWCMP(wxImage,WXDLLEXPORT) +#endif + //----------------------------------------------------------------------------- -// wxImage +// global data +//----------------------------------------------------------------------------- + +wxList wxImage::sm_handlers; +wxImage wxNullImage; + +//----------------------------------------------------------------------------- +// wxImageRefData //----------------------------------------------------------------------------- class wxImageRefData: public wxObjectRefData @@ -63,6 +71,7 @@ public: int m_width; int m_height; + wxBitmapType m_type; unsigned char *m_data; bool m_hasMask; @@ -86,13 +95,14 @@ public: wxArrayString m_optionNames; wxArrayString m_optionValues; - DECLARE_NO_COPY_CLASS(wxImageRefData) + wxDECLARE_NO_COPY_CLASS(wxImageRefData); }; wxImageRefData::wxImageRefData() { m_width = 0; m_height = 0; + m_type = wxBITMAP_TYPE_INVALID; m_data = m_alpha = (unsigned char *) NULL; @@ -114,64 +124,16 @@ wxImageRefData::~wxImageRefData() free( m_alpha ); } -wxList wxImage::sm_handlers; - -wxImage wxNullImage; +//----------------------------------------------------------------------------- +// wxImage //----------------------------------------------------------------------------- -#define M_IMGDATA wx_static_cast(wxImageRefData*, m_refData) +#define M_IMGDATA static_cast(m_refData) IMPLEMENT_DYNAMIC_CLASS(wxImage, wxObject) -wxImage::wxImage( int width, int height, bool clear ) -{ - Create( width, height, clear ); -} - -wxImage::wxImage( int width, int height, unsigned char* data, bool static_data ) -{ - Create( width, height, data, static_data ); -} - -wxImage::wxImage( int width, int height, unsigned char* data, unsigned char* alpha, bool static_data ) -{ - Create( width, height, data, alpha, static_data ); -} - -wxImage::wxImage( const wxString& name, long type, int index ) -{ - LoadFile( name, type, index ); -} - -wxImage::wxImage( const wxString& name, const wxString& mimetype, int index ) -{ - LoadFile( name, mimetype, index ); -} - -#if wxUSE_STREAMS -wxImage::wxImage( wxInputStream& stream, long type, int index ) -{ - LoadFile( stream, type, index ); -} - -wxImage::wxImage( wxInputStream& stream, const wxString& mimetype, int index ) -{ - LoadFile( stream, mimetype, index ); -} -#endif // wxUSE_STREAMS - -wxImage::wxImage( const char** xpmData ) -{ - Create(xpmData); -} - -wxImage::wxImage( char** xpmData ) -{ - Create((const char**) xpmData); -} - -bool wxImage::Create( const char** xpmData ) +bool wxImage::Create(const char* const* xpmData) { #if wxUSE_XPM UnRef(); @@ -197,13 +159,15 @@ bool wxImage::Create( int width, int height, bool clear ) return false; } - if (clear) - memset(M_IMGDATA->m_data, 0, width*height*3); - M_IMGDATA->m_width = width; M_IMGDATA->m_height = height; M_IMGDATA->m_ok = true; + if (clear) + { + Clear(); + } + return true; } @@ -238,6 +202,7 @@ bool wxImage::Create( int width, int height, unsigned char* data, unsigned char* M_IMGDATA->m_height = height; M_IMGDATA->m_ok = true; M_IMGDATA->m_static = static_data; + M_IMGDATA->m_staticAlpha = static_data; return true; } @@ -247,6 +212,11 @@ void wxImage::Destroy() UnRef(); } +void wxImage::Clear(unsigned char value) +{ + memset(M_IMGDATA->m_data, value, M_IMGDATA->m_width*M_IMGDATA->m_height*3); +} + wxObjectRefData* wxImage::CreateRefData() const { return new wxImageRefData; @@ -254,7 +224,7 @@ wxObjectRefData* wxImage::CreateRefData() const wxObjectRefData* wxImage::CloneRefData(const wxObjectRefData* that) const { - const wxImageRefData* refData = wx_static_cast(const wxImageRefData*, that); + const wxImageRefData* refData = static_cast(that); wxCHECK_MSG(refData->m_ok, NULL, wxT("invalid image") ); wxImageRefData* refData_new = new wxImageRefData; @@ -469,13 +439,7 @@ wxImage wxImage::Scale( int width, int height, int quality ) const unsigned char *source_alpha = 0 ; unsigned char *target_alpha = 0 ; - if (M_IMGDATA->m_hasMask) - { - image.SetMaskColour( M_IMGDATA->m_maskRed, - M_IMGDATA->m_maskGreen, - M_IMGDATA->m_maskBlue ); - } - else + if ( !M_IMGDATA->m_hasMask ) { source_alpha = M_IMGDATA->m_alpha ; if ( source_alpha ) @@ -514,6 +478,14 @@ wxImage wxImage::Scale( int width, int height, int quality ) const } } + // If the original image has a mask, apply the mask to the new image + if (M_IMGDATA->m_hasMask) + { + image.SetMaskColour( M_IMGDATA->m_maskRed, + M_IMGDATA->m_maskGreen, + M_IMGDATA->m_maskBlue ); + } + // In case this is a cursor, make sure the hotspot is scaled accordingly: if ( HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_X) ) image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_X, @@ -540,13 +512,8 @@ wxImage wxImage::ResampleBox(int width, int height) const const int scale_factor_x_2 = (int)(scale_factor_x / 2); const int scale_factor_y_2 = (int)(scale_factor_y / 2); - // If we want good-looking results we need to pre-blur the image a bit first - wxImage src_image(*this); - src_image = src_image.BlurHorizontal(scale_factor_x_2); - src_image = src_image.BlurVertical(scale_factor_y_2); - - unsigned char* src_data = src_image.GetData(); - unsigned char* src_alpha = src_image.GetAlpha(); + unsigned char* src_data = M_IMGDATA->m_data; + unsigned char* src_alpha = M_IMGDATA->m_alpha; unsigned char* dst_data = ret_image.GetData(); unsigned char* dst_alpha = NULL; @@ -573,24 +540,24 @@ wxImage wxImage::ResampleBox(int width, int height) const averaged_pixels = 0; sum_r = sum_g = sum_b = sum_a = 0.0; - for ( int j = src_y - scale_factor_y_2 + 1; + for ( int j = int(src_y - scale_factor_y/2.0 + 1); j <= int(src_y + scale_factor_y_2); j++ ) { // We don't care to average pixels that don't exist (edges) - if ( j < 0 || j > M_IMGDATA->m_height ) + if ( j < 0 || j > M_IMGDATA->m_height - 1 ) continue; - for ( int i = src_x - scale_factor_x_2 + 1; + for ( int i = int(src_x - scale_factor_x/2.0 + 1); i <= src_x + scale_factor_x_2; i++ ) { // Don't average edge pixels - if ( i < 0 || i > M_IMGDATA->m_width ) + if ( i < 0 || i > M_IMGDATA->m_width - 1 ) continue; // Calculate the actual index in our source pixels - src_pixel_index = src_y * M_IMGDATA->m_width + src_x; + src_pixel_index = j * M_IMGDATA->m_width + i; sum_r += src_data[src_pixel_index * 3 + 0]; sum_g += src_data[src_pixel_index * 3 + 1]; @@ -677,13 +644,13 @@ wxImage wxImage::ResampleBicubic(int width, int height) const for ( int dsty = 0; dsty < height; dsty++ ) { // We need to calculate the source pixel to interpolate from - Y-axis - double srcpixy = dsty * M_IMGDATA->m_height / height; + double srcpixy = double(dsty * M_IMGDATA->m_height) / height; double dy = srcpixy - (int)srcpixy; for ( int dstx = 0; dstx < width; dstx++ ) { // X-axis of pixel to interpolate from - double srcpixx = dstx * M_IMGDATA->m_width / width; + double srcpixx = double(dstx * M_IMGDATA->m_width) / width; double dx = srcpixx - (int)srcpixx; // Sums for each color channel @@ -745,7 +712,7 @@ wxImage wxImage::ResampleBicubic(int width, int height) const } // Blur in the horizontal direction -wxImage wxImage::BlurHorizontal(int blurRadius) +wxImage wxImage::BlurHorizontal(int blurRadius) const { wxImage ret_image; ret_image.Create(M_IMGDATA->m_width, M_IMGDATA->m_height, false); @@ -756,20 +723,17 @@ wxImage wxImage::BlurHorizontal(int blurRadius) unsigned char* dst_alpha = NULL; // Check for a mask or alpha - if ( M_IMGDATA->m_hasMask ) + if ( src_alpha ) + { + ret_image.SetAlpha(); + dst_alpha = ret_image.GetAlpha(); + } + else if ( M_IMGDATA->m_hasMask ) { ret_image.SetMaskColour(M_IMGDATA->m_maskRed, M_IMGDATA->m_maskGreen, M_IMGDATA->m_maskBlue); } - else - { - if ( src_alpha ) - { - ret_image.SetAlpha(); - dst_alpha = ret_image.GetAlpha(); - } - } // number of pixels we average over const int blurArea = blurRadius*2 + 1; @@ -850,7 +814,7 @@ wxImage wxImage::BlurHorizontal(int blurRadius) sum_a += src_alpha[pixel_idx]; // Save off the averaged data - dst = dst_data + x*3 + y*M_IMGDATA->m_width; + dst = dst_data + x*3 + y*M_IMGDATA->m_width*3; dst[0] = (unsigned char)(sum_r / blurArea); dst[1] = (unsigned char)(sum_g / blurArea); dst[2] = (unsigned char)(sum_b / blurArea); @@ -863,7 +827,7 @@ wxImage wxImage::BlurHorizontal(int blurRadius) } // Blur in the vertical direction -wxImage wxImage::BlurVertical(int blurRadius) +wxImage wxImage::BlurVertical(int blurRadius) const { wxImage ret_image; ret_image.Create(M_IMGDATA->m_width, M_IMGDATA->m_height, false); @@ -874,20 +838,17 @@ wxImage wxImage::BlurVertical(int blurRadius) unsigned char* dst_alpha = NULL; // Check for a mask or alpha - if ( M_IMGDATA->m_hasMask ) + if ( src_alpha ) + { + ret_image.SetAlpha(); + dst_alpha = ret_image.GetAlpha(); + } + else if ( M_IMGDATA->m_hasMask ) { ret_image.SetMaskColour(M_IMGDATA->m_maskRed, M_IMGDATA->m_maskGreen, M_IMGDATA->m_maskBlue); } - else - { - if ( src_alpha ) - { - ret_image.SetAlpha(); - dst_alpha = ret_image.GetAlpha(); - } - } // number of pixels we average over const int blurArea = blurRadius*2 + 1; @@ -981,7 +942,7 @@ wxImage wxImage::BlurVertical(int blurRadius) } // The new blur function -wxImage wxImage::Blur(int blurRadius) +wxImage wxImage::Blur(int blurRadius) const { wxImage ret_image; ret_image.Create(M_IMGDATA->m_width, M_IMGDATA->m_height, false); @@ -1281,7 +1242,6 @@ void wxImage::Paste( const wxImage &image, int x, int y ) (GetMaskGreen()==image.GetMaskGreen()) && (GetMaskBlue()==image.GetMaskBlue())))) { - width *= 3; unsigned char* source_data = image.GetData() + xx*3 + yy*3*image.GetWidth(); int source_step = image.GetWidth()*3; @@ -1289,11 +1249,30 @@ void wxImage::Paste( const wxImage &image, int x, int y ) int target_step = M_IMGDATA->m_width*3; for (int j = 0; j < height; j++) { - memcpy( target_data, source_data, width ); + memcpy( target_data, source_data, width*3 ); source_data += source_step; target_data += target_step; } - return; + } + + // Copy over the alpha channel from the original image + if ( image.HasAlpha() ) + { + if ( !HasAlpha() ) + InitAlpha(); + + unsigned char* source_data = image.GetAlpha() + xx + yy*image.GetWidth(); + int source_step = image.GetWidth(); + + unsigned char* target_data = GetAlpha() + (x+xx) + (y+yy)*M_IMGDATA->m_width; + int target_step = M_IMGDATA->m_width; + + for (int j = 0; j < height; j++, + source_data += source_step, + target_data += target_step) + { + memcpy( target_data, source_data, width ); + } } if (!HasMask() && image.HasMask()) @@ -1302,7 +1281,6 @@ void wxImage::Paste( const wxImage &image, int x, int y ) unsigned char g = image.GetMaskGreen(); unsigned char b = image.GetMaskBlue(); - width *= 3; unsigned char* source_data = image.GetData() + xx*3 + yy*3*image.GetWidth(); int source_step = image.GetWidth()*3; @@ -1311,10 +1289,10 @@ void wxImage::Paste( const wxImage &image, int x, int y ) for (int j = 0; j < height; j++) { - for (int i = 0; i < width; i+=3) + for (int i = 0; i < width*3; i+=3) { - if ((source_data[i] != r) && - (source_data[i+1] != g) && + if ((source_data[i] != r) || + (source_data[i+1] != g) || (source_data[i+2] != b)) { memcpy( target_data+i, source_data+i, 3 ); @@ -1384,7 +1362,7 @@ wxImage wxImage::ConvertToGreyscale( double lr, double lg, double lb ) const { // calculate the luma double luma = (src[0] * lr + src[1] * lg + src[2] * lb) + 0.5; - dest[0] = dest[1] = dest[2] = wx_static_cast(unsigned char, luma); + dest[0] = dest[1] = dest[2] = static_cast(luma); } } @@ -1452,6 +1430,23 @@ int wxImage::GetHeight() const return M_IMGDATA->m_height; } +wxBitmapType wxImage::GetType() const +{ + wxCHECK_MSG( IsOk(), wxBITMAP_TYPE_INVALID, wxT("invalid image") ); + + return M_IMGDATA->m_type; +} + +void wxImage::SetType(wxBitmapType type) +{ + wxCHECK_RET( IsOk(), "must create the image before setting its type"); + + // type can be wxBITMAP_TYPE_INVALID to reset the image type to default + wxASSERT_MSG( type != wxBITMAP_TYPE_MAX, "invalid bitmap type" ); + + M_IMGDATA->m_type = type; +} + long wxImage::XYToIndex(int x, int y) const { if ( Ok() && @@ -1546,7 +1541,7 @@ unsigned char wxImage::GetBlue( int x, int y ) const return M_IMGDATA->m_data[pos+2]; } -bool wxImage::Ok() const +bool wxImage::IsOk() const { // image of 0 width or height can't be considered ok - at least because it // causes crashes in ConvertToBitmap() if we don't catch it in time @@ -1673,7 +1668,9 @@ void wxImage::SetAlpha( unsigned char *alpha, bool static_data ) alpha = (unsigned char *)malloc(M_IMGDATA->m_width*M_IMGDATA->m_height); } - free(M_IMGDATA->m_alpha); + if( !M_IMGDATA->m_staticAlpha ) + free(M_IMGDATA->m_alpha); + M_IMGDATA->m_alpha = alpha; M_IMGDATA->m_staticAlpha = static_data; } @@ -1872,16 +1869,28 @@ bool wxImage::SetMaskFromImage(const wxImage& mask, bool wxImage::ConvertAlphaToMask(unsigned char threshold) { - if (!HasAlpha()) + if ( !HasAlpha() ) return true; unsigned char mr, mg, mb; - if (!FindFirstUnusedColour(&mr, &mg, &mb)) + if ( !FindFirstUnusedColour(&mr, &mg, &mb) ) { wxLogError( _("No unused colour in image being masked.") ); return false; } + ConvertAlphaToMask(mr, mg, mb, threshold); + return true; +} + +void wxImage::ConvertAlphaToMask(unsigned char mr, + unsigned char mg, + unsigned char mb, + unsigned char threshold) +{ + if ( !HasAlpha() ) + return; + AllocExclusive(); SetMask(true); @@ -1906,10 +1915,11 @@ bool wxImage::ConvertAlphaToMask(unsigned char threshold) } } - free(M_IMGDATA->m_alpha); - M_IMGDATA->m_alpha = NULL; + if ( !M_IMGDATA->m_staticAlpha ) + free(M_IMGDATA->m_alpha); - return true; + M_IMGDATA->m_alpha = NULL; + M_IMGDATA->m_staticAlpha = false; } // ---------------------------------------------------------------------------- @@ -1950,12 +1960,10 @@ void wxImage::SetPalette(const wxPalette& palette) void wxImage::SetOption(const wxString& name, const wxString& value) { - wxCHECK_RET( Ok(), wxT("invalid image") ); - AllocExclusive(); int idx = M_IMGDATA->m_optionNames.Index(name, false); - if (idx == wxNOT_FOUND) + if ( idx == wxNOT_FOUND ) { M_IMGDATA->m_optionNames.Add(name); M_IMGDATA->m_optionValues.Add(value); @@ -1976,10 +1984,11 @@ void wxImage::SetOption(const wxString& name, int value) wxString wxImage::GetOption(const wxString& name) const { - wxCHECK_MSG( Ok(), wxEmptyString, wxT("invalid image") ); + if ( !M_IMGDATA ) + return wxEmptyString; int idx = M_IMGDATA->m_optionNames.Index(name, false); - if (idx == wxNOT_FOUND) + if ( idx == wxNOT_FOUND ) return wxEmptyString; else return M_IMGDATA->m_optionValues[idx]; @@ -1992,9 +2001,8 @@ int wxImage::GetOptionInt(const wxString& name) const bool wxImage::HasOption(const wxString& name) const { - wxCHECK_MSG( Ok(), false, wxT("invalid image") ); - - return (M_IMGDATA->m_optionNames.Index(name, false) != wxNOT_FOUND); + return M_IMGDATA ? M_IMGDATA->m_optionNames.Index(name, false) != wxNOT_FOUND + : false; } // ---------------------------------------------------------------------------- @@ -2002,7 +2010,7 @@ bool wxImage::HasOption(const wxString& name) const // ---------------------------------------------------------------------------- bool wxImage::LoadFile( const wxString& WXUNUSED_UNLESS_STREAMS(filename), - long WXUNUSED_UNLESS_STREAMS(type), + wxBitmapType WXUNUSED_UNLESS_STREAMS(type), int WXUNUSED_UNLESS_STREAMS(index) ) { #if HAS_FILE_STREAMS @@ -2046,25 +2054,23 @@ bool wxImage::LoadFile( const wxString& WXUNUSED_UNLESS_STREAMS(filename), } - bool wxImage::SaveFile( const wxString& filename ) const { wxString ext = filename.AfterLast('.').Lower(); - wxImageHandler * pHandler = FindHandler(ext, -1); - if (pHandler) + wxImageHandler *handler = FindHandler(ext, wxBITMAP_TYPE_ANY); + if ( !handler) { - SaveFile(filename, pHandler->GetType()); - return true; + wxLogError(_("Can't save image to file '%s': unknown extension."), + filename); + return false; } - wxLogError(_("Can't save image to file '%s': unknown extension."), filename.c_str()); - - return false; + return SaveFile(filename, handler->GetType()); } bool wxImage::SaveFile( const wxString& WXUNUSED_UNLESS_STREAMS(filename), - int WXUNUSED_UNLESS_STREAMS(type) ) const + wxBitmapType WXUNUSED_UNLESS_STREAMS(type) ) const { #if HAS_FILE_STREAMS wxCHECK_MSG( Ok(), false, wxT("invalid image") ); @@ -2114,7 +2120,7 @@ bool wxImage::CanRead( const wxString& WXUNUSED_UNLESS_STREAMS(name) ) } int wxImage::GetImageCount( const wxString& WXUNUSED_UNLESS_STREAMS(name), - long WXUNUSED_UNLESS_STREAMS(type) ) + wxBitmapType WXUNUSED_UNLESS_STREAMS(type) ) { #if HAS_FILE_STREAMS wxImageFileInputStream stream(name); @@ -2141,19 +2147,25 @@ bool wxImage::CanRead( wxInputStream &stream ) return false; } -int wxImage::GetImageCount( wxInputStream &stream, long type ) +int wxImage::GetImageCount( wxInputStream &stream, wxBitmapType type ) { wxImageHandler *handler; if ( type == wxBITMAP_TYPE_ANY ) { - wxList &list=GetHandlers(); + const wxList& list = GetHandlers(); - for (wxList::compatibility_iterator node = list.GetFirst(); node; node = node->GetNext()) + for ( wxList::compatibility_iterator node = list.GetFirst(); + node; + node = node->GetNext() ) { - handler=(wxImageHandler*)node->GetData(); + handler = (wxImageHandler*)node->GetData(); if ( handler->CanRead(stream) ) - return handler->GetImageCount(stream); + { + const int count = handler->GetImageCount(stream); + if ( count >= 0 ) + return count; + } } @@ -2180,46 +2192,79 @@ int wxImage::GetImageCount( wxInputStream &stream, long type ) } } -bool wxImage::LoadFile( wxInputStream& stream, long type, int index ) +bool wxImage::DoLoad(wxImageHandler& handler, wxInputStream& stream, int index) { - UnRef(); + // save the options values which can be clobbered by the handler (e.g. many + // of them call Destroy() before trying to load the file) + const unsigned maxWidth = GetOptionInt(wxIMAGE_OPTION_MAX_WIDTH), + maxHeight = GetOptionInt(wxIMAGE_OPTION_MAX_HEIGHT); - m_refData = new wxImageRefData; + if ( !handler.LoadFile(this, stream, true/*verbose*/, index) ) + return false; - wxImageHandler *handler; + M_IMGDATA->m_type = handler.GetType(); - if ( type == wxBITMAP_TYPE_ANY ) + // rescale the image to the specified size if needed + if ( maxWidth || maxHeight ) { - wxList &list=GetHandlers(); + const unsigned widthOrig = GetWidth(), + heightOrig = GetHeight(); - for ( wxList::compatibility_iterator node = list.GetFirst(); node; node = node->GetNext() ) + // this uses the same (trivial) algorithm as the JPEG handler + unsigned width = widthOrig, + height = heightOrig; + while ( (maxWidth && width > maxWidth) || + (maxHeight && height > maxHeight) ) { - handler=(wxImageHandler*)node->GetData(); - if ( handler->CanRead(stream) ) - return handler->LoadFile(this, stream, true/*verbose*/, index); + width /= 2; + height /= 2; + } + + if ( width != widthOrig || height != heightOrig ) + Rescale(width, height, wxIMAGE_QUALITY_HIGH); + } + + return true; +} + +bool wxImage::LoadFile( wxInputStream& stream, wxBitmapType type, int index ) +{ + AllocExclusive(); + wxImageHandler *handler; + + if ( type == wxBITMAP_TYPE_ANY ) + { + const wxList& list = GetHandlers(); + for ( wxList::compatibility_iterator node = list.GetFirst(); + node; + node = node->GetNext() ) + { + handler = (wxImageHandler*)node->GetData(); + if ( handler->CanRead(stream) && DoLoad(*handler, stream, index) ) + return true; } wxLogWarning( _("No handler found for image type.") ); + return false; } + //else: have specific type handler = FindHandler(type); - - if (handler == 0) + if ( !handler ) { wxLogWarning( _("No image handler for type %ld defined."), type ); - return false; } - if (stream.IsSeekable() && !handler->CanRead(stream)) + if ( stream.IsSeekable() && !handler->CanRead(stream) ) { wxLogError(_("Image file is not of type %ld."), type); return false; } - else - return handler->LoadFile(this, stream, true/*verbose*/, index); + + return DoLoad(*handler, stream, index); } bool wxImage::LoadFile( wxInputStream& stream, const wxString& mimetype, int index ) @@ -2230,23 +2275,32 @@ bool wxImage::LoadFile( wxInputStream& stream, const wxString& mimetype, int ind wxImageHandler *handler = FindHandlerMime(mimetype); - if (handler == 0) + if ( !handler ) { wxLogWarning( _("No image handler for type %s defined."), mimetype.GetData() ); - return false; } - if (stream.IsSeekable() && !handler->CanRead(stream)) + if ( stream.IsSeekable() && !handler->CanRead(stream) ) { - wxLogError(_("Image file is not of type %s."), (const wxChar*) mimetype); + wxLogError(_("Image file is not of type %s."), mimetype); return false; } - else - return handler->LoadFile( this, stream, true/*verbose*/, index ); + + return DoLoad(*handler, stream, index); +} + +bool wxImage::DoSave(wxImageHandler& handler, wxOutputStream& stream) const +{ + wxImage * const self = const_cast(this); + if ( !handler.SaveFile(self, stream) ) + return false; + + M_IMGDATA->m_type = handler.GetType(); + return true; } -bool wxImage::SaveFile( wxOutputStream& stream, int type ) const +bool wxImage::SaveFile( wxOutputStream& stream, wxBitmapType type ) const { wxCHECK_MSG( Ok(), false, wxT("invalid image") ); @@ -2254,11 +2308,10 @@ bool wxImage::SaveFile( wxOutputStream& stream, int type ) const if ( !handler ) { wxLogWarning( _("No image handler for type %d defined."), type ); - return false; } - return handler->SaveFile( (wxImage*)this, stream ); + return DoSave(*handler, stream); } bool wxImage::SaveFile( wxOutputStream& stream, const wxString& mimetype ) const @@ -2269,12 +2322,11 @@ bool wxImage::SaveFile( wxOutputStream& stream, const wxString& mimetype ) const if ( !handler ) { wxLogWarning( _("No image handler for type %s defined."), mimetype.GetData() ); - - return false; } - return handler->SaveFile( (wxImage*)this, stream ); + return DoSave(*handler, stream); } + #endif // wxUSE_STREAMS // ---------------------------------------------------------------------------- @@ -2341,24 +2393,28 @@ wxImageHandler *wxImage::FindHandler( const wxString& name ) node = node->GetNext(); } - return 0; + return NULL; } -wxImageHandler *wxImage::FindHandler( const wxString& extension, long bitmapType ) +wxImageHandler *wxImage::FindHandler( const wxString& extension, wxBitmapType bitmapType ) { wxList::compatibility_iterator node = sm_handlers.GetFirst(); while (node) { wxImageHandler *handler = (wxImageHandler*)node->GetData(); - if ( (handler->GetExtension().Cmp(extension) == 0) && - (bitmapType == -1 || handler->GetType() == bitmapType) ) - return handler; + if ((bitmapType == wxBITMAP_TYPE_ANY) || (handler->GetType() == bitmapType)) + { + if (handler->GetExtension() == extension) + return handler; + if (handler->GetAltExtensions().Index(extension, false) != wxNOT_FOUND) + return handler; + } node = node->GetNext(); } - return 0; + return NULL; } -wxImageHandler *wxImage::FindHandler( long bitmapType ) +wxImageHandler *wxImage::FindHandler(wxBitmapType bitmapType ) { wxList::compatibility_iterator node = sm_handlers.GetFirst(); while (node) @@ -2367,7 +2423,7 @@ wxImageHandler *wxImage::FindHandler( long bitmapType ) if (handler->GetType() == bitmapType) return handler; node = node->GetNext(); } - return 0; + return NULL; } wxImageHandler *wxImage::FindHandlerMime( const wxString& mimetype ) @@ -2379,7 +2435,7 @@ wxImageHandler *wxImage::FindHandlerMime( const wxString& mimetype ) if (handler->GetMimeType().IsSameAs(mimetype, false)) return handler; node = node->GetNext(); } - return 0; + return NULL; } void wxImage::InitStandardHandlers() @@ -2413,6 +2469,8 @@ wxString wxImage::GetImageExtWildcard() { wxImageHandler* Handler = (wxImageHandler*)Node->GetData(); fmts += wxT("*.") + Handler->GetExtension(); + for (size_t i = 0; i < Handler->GetAltExtensions().size(); i++) + fmts += wxT(";*.") + Handler->GetAltExtensions()[i]; Node = Node->GetNext(); if ( Node ) fmts += wxT(";"); } @@ -2653,6 +2711,42 @@ bool wxImageHandler::CallDoCanRead(wxInputStream& stream) #endif // wxUSE_STREAMS +/* static */ +wxImageResolution +wxImageHandler::GetResolutionFromOptions(const wxImage& image, int *x, int *y) +{ + wxCHECK_MSG( x && y, wxIMAGE_RESOLUTION_NONE, _T("NULL pointer") ); + + if ( image.HasOption(wxIMAGE_OPTION_RESOLUTIONX) && + image.HasOption(wxIMAGE_OPTION_RESOLUTIONY) ) + { + *x = image.GetOptionInt(wxIMAGE_OPTION_RESOLUTIONX); + *y = image.GetOptionInt(wxIMAGE_OPTION_RESOLUTIONY); + } + else if ( image.HasOption(wxIMAGE_OPTION_RESOLUTION) ) + { + *x = + *y = image.GetOptionInt(wxIMAGE_OPTION_RESOLUTION); + } + else // no resolution options specified + { + *x = + *y = 0; + + return wxIMAGE_RESOLUTION_NONE; + } + + // get the resolution unit too + int resUnit = image.GetOptionInt(wxIMAGE_OPTION_RESOLUTIONUNIT); + if ( !resUnit ) + { + // this is the default + resUnit = wxIMAGE_RESOLUTION_INCHES; + } + + return (wxImageResolution)resUnit; +} + // ---------------------------------------------------------------------------- // image histogram stuff // ---------------------------------------------------------------------------- @@ -2783,18 +2877,7 @@ unsigned long wxImage::ComputeHistogram( wxImageHistogram &h ) const * Rotation code by Carlos Moreno */ -// 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. - -static const double gs_Epsilon = 1e-10; - -static inline int wxCint (double x) -{ - return (x > 0) ? (int) (x + 0.5) : (int) (x - 0.5); -} - +static const double wxROTATE_EPSILON = 1e-10; // Auxiliary function to rotate a point (x,y) with respect to point p0 // make it inline and use a straight return to facilitate optimization @@ -2802,42 +2885,53 @@ static inline int wxCint (double x) // repeating the time-consuming calls to these functions -- sin/cos can // be computed and stored in the calling function. -inline wxRealPoint rotated_point (const wxRealPoint & p, double cos_angle, double sin_angle, const wxRealPoint & p0) +static inline wxRealPoint +wxRotatePoint(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); + 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); } -inline wxRealPoint rotated_point (double x, double y, double cos_angle, double sin_angle, const wxRealPoint & p0) +static inline wxRealPoint +wxRotatePoint(double x, double y, double cos_angle, double sin_angle, + const wxRealPoint & p0) { - return rotated_point (wxRealPoint(x,y), cos_angle, sin_angle, p0); + return wxRotatePoint (wxRealPoint(x,y), cos_angle, sin_angle, p0); } -wxImage wxImage::Rotate(double angle, const wxPoint & centre_of_rotation, bool interpolating, wxPoint * offset_after_rotation) const +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 + // screen coordinates are a mirror image of "real" coordinates + angle = -angle; - bool has_alpha = HasAlpha(); + const bool has_alpha = HasAlpha(); + + const int w = GetWidth(); + const int h = GetHeight(); + + int i; // Create pointer-based array to accelerate access to wxImage's data - unsigned char ** data = new unsigned char * [GetHeight()]; + unsigned char ** data = new unsigned char * [h]; data[0] = GetData(); - for (i = 1; i < GetHeight(); i++) - data[i] = data[i - 1] + (3 * GetWidth()); + for (i = 1; i < h; i++) + data[i] = data[i - 1] + (3 * w); // Same for alpha channel unsigned char ** alpha = NULL; if (has_alpha) { - alpha = new unsigned char * [GetHeight()]; + alpha = new unsigned char * [h]; alpha[0] = GetAlpha(); - for (i = 1; i < GetHeight(); i++) - alpha[i] = alpha[i - 1] + GetWidth(); + for (i = 1; i < h; i++) + alpha[i] = alpha[i - 1] + w; } // precompute coefficients for rotation formula - // (sine and cosine of the angle) const double cos_angle = cos(angle); const double sin_angle = sin(angle); @@ -2847,10 +2941,10 @@ wxImage wxImage::Rotate(double angle, const wxPoint & centre_of_rotation, bool i const wxRealPoint p0(centre_of_rotation.x, centre_of_rotation.y); - 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); + wxRealPoint p1 = wxRotatePoint (0, 0, cos_angle, sin_angle, p0); + wxRealPoint p2 = wxRotatePoint (0, h, cos_angle, sin_angle, p0); + wxRealPoint p3 = wxRotatePoint (w, 0, cos_angle, sin_angle, p0); + wxRealPoint p4 = wxRotatePoint (w, h, cos_angle, sin_angle, p0); int x1a = (int) floor (wxMin (wxMin(p1.x, p2.x), wxMin(p3.x, p4.x))); int y1a = (int) floor (wxMin (wxMin(p1.y, p2.y), wxMin(p3.y, p4.y))); @@ -2868,19 +2962,14 @@ wxImage wxImage::Rotate(double angle, const wxPoint & centre_of_rotation, bool i *offset_after_rotation = wxPoint (x1a, y1a); } - // 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(); + // the rotated (destination) image is always accessed sequentially via this + // pointer, there is no need for pointer-based arrays here + unsigned char *dst = rotated.GetData(); - unsigned char * alpha_dst = NULL; - if (has_alpha) - alpha_dst = rotated.GetAlpha(); + unsigned char *alpha_dst = has_alpha ? rotated.GetAlpha() : NULL; - // GRG: if the original image has a mask, use its RGB values - // as the blank pixel, else, fall back to default (black). - // + // 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; @@ -2897,44 +2986,45 @@ wxImage wxImage::Rotate(double angle, const wxPoint & centre_of_rotation, bool i // performing an inverse rotation (a rotation of -angle) and getting the // pixel at those coordinates - // 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. + const int rH = rotated.GetHeight(); + const int rW = rotated.GetWidth(); - int x; + // do the (interpolating) test outside of the loops, so that it is done + // only once, instead of repeating it for each pixel. if (interpolating) { - for (int y = 0; y < rotated.GetHeight(); y++) + for (int y = 0; y < rH; y++) { - for (x = 0; x < rotated.GetWidth(); x++) + for (int x = 0; x < rW; x++) { - wxRealPoint src = rotated_point (x + x1a, y + y1a, cos_angle, -sin_angle, p0); + wxRealPoint src = wxRotatePoint (x + x1a, y + y1a, cos_angle, -sin_angle, p0); - if (-0.25 < src.x && src.x < GetWidth() - 0.75 && - -0.25 < src.y && src.y < GetHeight() - 0.75) + if (-0.25 < src.x && src.x < w - 0.75 && + -0.25 < src.y && src.y < h - 0.75) { // interpolate using the 4 enclosing grid-points. Those // points can be obtained using floor and ceiling of the // exact coordinates of the point int x1, y1, x2, y2; - if (0 < src.x && src.x < GetWidth() - 1) + if (0 < src.x && src.x < w - 1) { - x1 = wxCint(floor(src.x)); - x2 = wxCint(ceil(src.x)); + x1 = wxRound(floor(src.x)); + x2 = wxRound(ceil(src.x)); } else // else means that x is near one of the borders (0 or width-1) { - x1 = x2 = wxCint (src.x); + x1 = x2 = wxRound (src.x); } - if (0 < src.y && src.y < GetHeight() - 1) + if (0 < src.y && src.y < h - 1) { - y1 = wxCint(floor(src.y)); - y2 = wxCint(ceil(src.y)); + y1 = wxRound(floor(src.y)); + y2 = wxRound(ceil(src.y)); } else { - y1 = y2 = wxCint (src.y); + y1 = y2 = wxRound (src.y); } // get four points and the distances (square of the distance, @@ -2943,7 +3033,7 @@ wxImage wxImage::Rotate(double angle, const wxPoint & centre_of_rotation, bool i // 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 + // or d4 are < wxROTATE_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); @@ -2956,7 +3046,8 @@ wxImage wxImage::Rotate(double angle, const wxPoint & centre_of_rotation, bool i // 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() + // d1,d2,d3,d4 are positive -- no need for abs() + if (d1 < wxROTATE_EPSILON) { unsigned char *p = data[y1] + (3 * x1); *(dst++) = *(p++); @@ -2966,7 +3057,7 @@ wxImage wxImage::Rotate(double angle, const wxPoint & centre_of_rotation, bool i if (has_alpha) *(alpha_dst++) = *(alpha[y1] + x1); } - else if (d2 < gs_Epsilon) + else if (d2 < wxROTATE_EPSILON) { unsigned char *p = data[y1] + (3 * x2); *(dst++) = *(p++); @@ -2976,7 +3067,7 @@ wxImage wxImage::Rotate(double angle, const wxPoint & centre_of_rotation, bool i if (has_alpha) *(alpha_dst++) = *(alpha[y1] + x2); } - else if (d3 < gs_Epsilon) + else if (d3 < wxROTATE_EPSILON) { unsigned char *p = data[y2] + (3 * x2); *(dst++) = *(p++); @@ -2986,7 +3077,7 @@ wxImage wxImage::Rotate(double angle, const wxPoint & centre_of_rotation, bool i if (has_alpha) *(alpha_dst++) = *(alpha[y2] + x2); } - else if (d4 < gs_Epsilon) + else if (d4 < wxROTATE_EPSILON) { unsigned char *p = data[y2] + (3 * x1); *(dst++) = *(p++); @@ -3047,19 +3138,18 @@ wxImage wxImage::Rotate(double angle, const wxPoint & centre_of_rotation, bool i } } } - else // not interpolating + else // not interpolating { - for (int y = 0; y < rotated.GetHeight(); y++) + for (int y = 0; y < rH; y++) { - for (x = 0; x < rotated.GetWidth(); x++) + for (int x = 0; x < rW; x++) { - wxRealPoint src = rotated_point (x + x1a, y + y1a, cos_angle, -sin_angle, p0); + wxRealPoint src = wxRotatePoint (x + x1a, y + y1a, cos_angle, -sin_angle, p0); - const int xs = wxCint (src.x); // wxCint rounds to the - const int ys = wxCint (src.y); // closest integer + const int xs = wxRound (src.x); // wxRound rounds to the + const int ys = wxRound (src.y); // closest integer - if (0 <= xs && xs < GetWidth() && - 0 <= ys && ys < GetHeight()) + if (0 <= xs && xs < w && 0 <= ys && ys < h) { unsigned char *p = data[ys] + (3 * xs); *(dst++) = *(p++); @@ -3083,9 +3173,7 @@ wxImage wxImage::Rotate(double angle, const wxPoint & centre_of_rotation, bool i } delete [] data; - - if (has_alpha) - delete [] alpha; + delete [] alpha; return rotated; } @@ -3103,8 +3191,8 @@ class wxImageModule: public wxModule DECLARE_DYNAMIC_CLASS(wxImageModule) public: wxImageModule() {} - bool OnInit() { wxImage::InitStandardHandlers(); return true; }; - void OnExit() { wxImage::CleanUpHandlers(); }; + bool OnInit() { wxImage::InitStandardHandlers(); return true; } + void OnExit() { wxImage::CleanUpHandlers(); } }; IMPLEMENT_DYNAMIC_CLASS(wxImageModule, wxModule)