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add some wxIMAGE_OPTION_PNG_xxx options to wxImage and wxPNGHandler to allow the user to set the desired compression level (closes #10372)

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@58103 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Francesco Montorsi
2009-01-14 17:54:38 +00:00
parent 09ddabf738
commit d19ce8c491
4 changed files with 97 additions and 15 deletions
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15
src/common/imagpng.cpp
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@@ -710,6 +710,21 @@ bool wxPNGHandler::SaveFile( wxImage *image, wxOutputStream& stream, bool verbos
: PNG_COLOR_TYPE_GRAY;
}
if (image->HasOption(wxIMAGE_OPTION_PNG_FILTER))
png_set_filter( png_ptr, PNG_FILTER_TYPE_BASE, image->GetOptionInt(wxIMAGE_OPTION_PNG_FILTER) );
if (image->HasOption(wxIMAGE_OPTION_PNG_COMPRESSION_LEVEL))
png_set_compression_level( png_ptr, image->GetOptionInt(wxIMAGE_OPTION_PNG_COMPRESSION_LEVEL) );
if (image->HasOption(wxIMAGE_OPTION_PNG_COMPRESSION_MEM_LEVEL))
png_set_compression_mem_level( png_ptr, image->GetOptionInt(wxIMAGE_OPTION_PNG_COMPRESSION_MEM_LEVEL) );
if (image->HasOption(wxIMAGE_OPTION_PNG_COMPRESSION_STRATEGY))
png_set_compression_strategy( png_ptr, image->GetOptionInt(wxIMAGE_OPTION_PNG_COMPRESSION_STRATEGY) );
if (image->HasOption(wxIMAGE_OPTION_PNG_COMPRESSION_BUFFER_SIZE))
png_set_compression_buffer_size( png_ptr, image->GetOptionInt(wxIMAGE_OPTION_PNG_COMPRESSION_BUFFER_SIZE) );
png_set_IHDR( png_ptr, info_ptr, image->GetWidth(), image->GetHeight(),
iBitDepth, iPngColorType,
PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_BASE,