mirror of
https://github.com/pdf2htmlEX/pdf2htmlEX.git
synced 2024-12-22 13:00:08 +00:00
use asc/dec of local matched font if possible
This commit is contained in:
Lu Wang
parent
0ef68558ae
commit
9a2047777f
@ -126,7 +126,7 @@ class HTMLRenderer : public OutputDev
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void add_tmp_file (const std::string & fn);
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void clean_tmp_files ();
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boost::filesystem::path dump_embedded_font (GfxFont * font, long long fn_id);
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void embed_font(const boost::filesystem::path & filepath, GfxFont * font, FontInfo & info);
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void embed_font(const boost::filesystem::path & filepath, GfxFont * font, FontInfo & info, bool get_metric_only = false);
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////////////////////////////////////////////////////
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// manage styles
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@ -153,7 +153,7 @@ class HTMLRenderer : public OutputDev
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*/
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void export_remote_font(const FontInfo & info, const std::string & suffix, const std::string & fontfileformat, GfxFont * font);
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void export_remote_default_font(long long fn_id);
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void export_local_font(long long fn_id, GfxFont * font, const std::string & original_font_name, const std::string & cssfont);
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void export_local_font(const FontInfo & info, GfxFont * font, const std::string & original_font_name, const std::string & cssfont);
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void export_font_size(long long fs_id, double font_size);
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void export_transform_matrix(long long tm_id, const double * tm);
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@ -50,9 +50,9 @@ void HTMLRenderer::export_remote_default_font(long long fn_id)
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allcss_fout << format(".f%|1$x|{font-family:sans-serif;color:transparent;visibility:hidden;}")%fn_id << endl;
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}
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void HTMLRenderer::export_local_font(long long fn_id, GfxFont * font, const string & original_font_name, const string & cssfont)
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void HTMLRenderer::export_local_font(const FontInfo & info, GfxFont * font, const string & original_font_name, const string & cssfont)
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{
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allcss_fout << format(".f%|1$x|{") % fn_id;
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allcss_fout << format(".f%|1$x|{") % info.id;
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allcss_fout << "font-family:" << ((cssfont == "") ? (original_font_name + "," + general_font_family(font)) : cssfont) << ";";
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if(font->isBold() || ifind_first(original_font_name, "bold"))
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@ -63,7 +63,7 @@ void HTMLRenderer::export_local_font(long long fn_id, GfxFont * font, const stri
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else if(font->isItalic() || ifind_first(original_font_name, "italic"))
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allcss_fout << "font-style:italic;";
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allcss_fout << "line-height:" << (font->getAscent() - font->getDescent()) << ";";
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allcss_fout << "line-height:" << (info.ascent - info.descent) << ";";
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allcss_fout << "}" << endl;
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}
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@ -15,6 +15,7 @@
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#include "HTMLRenderer.h"
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#include "namespace.h"
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#include "util.h"
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FontInfo HTMLRenderer::install_font(GfxFont * font)
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{
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@ -102,12 +103,12 @@ void HTMLRenderer::install_embedded_font(GfxFont * font, FontInfo & info)
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void HTMLRenderer::install_base_font(GfxFont * font, GfxFontLoc * font_loc, FontInfo & info)
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{
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GfxFontLoc * localfontloc = font->locateFont(xref, gFalse);
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if(param->embed_base_font)
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{
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GfxFontLoc * fontloc = font->locateFont(xref, gFalse);
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if(fontloc != nullptr)
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if(localfontloc != nullptr)
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{
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embed_font(path(fontloc->path->getCString()), font, info);
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embed_font(path(localfontloc->path->getCString()), font, info);
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export_remote_font(info, param->font_suffix, param->font_format, font);
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return;
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}
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@ -130,13 +131,22 @@ void HTMLRenderer::install_base_font(GfxFont * font, GfxFontLoc * font_loc, Font
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else
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cssfont = iter->second;
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info.ascent = font->getAscent();
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info.descent = font->getDescent();
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// still try to get an idea of read ascent/descent
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if(localfontloc != nullptr)
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{
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// fill in ascent/descent only, do not embed
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embed_font(path(localfontloc->path->getCString()), font, info, true);
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}
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else
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{
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info.ascent = font->getAscent();
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info.descent = font->getDescent();
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}
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export_local_font(info.id, font, psname, cssfont);
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export_local_font(info, font, psname, cssfont);
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}
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void HTMLRenderer::install_external_font( GfxFont * font, FontInfo & info)
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void HTMLRenderer::install_external_font(GfxFont * font, FontInfo & info)
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{
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string fontname(font->getName()->getCString());
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@ -148,7 +158,7 @@ void HTMLRenderer::install_external_font( GfxFont * font, FontInfo & info)
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cerr << "Warning: workaround for font names in bad encodings." << endl;
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}
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export_local_font(info.id, font, fontname, "");
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export_local_font(info, font, fontname, "");
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}
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long long HTMLRenderer::install_font_size(double font_size)
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@ -1,7 +1,7 @@
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/*
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* text.ccc
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*
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* Handling text and relative stuffs
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* Handling text & font, and relative stuffs
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*
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* by WangLu
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* 2012.08.14
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@ -153,7 +153,7 @@ path HTMLRenderer::dump_embedded_font (GfxFont * font, long long fn_id)
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return filepath;
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}
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void HTMLRenderer::embed_font(const path & filepath, GfxFont * font, FontInfo & info)
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void HTMLRenderer::embed_font(const path & filepath, GfxFont * font, FontInfo & info, bool get_metric_only)
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{
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string suffix = filepath.extension().string();
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to_lower(suffix);
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@ -172,132 +172,139 @@ void HTMLRenderer::embed_font(const path & filepath, GfxFont * font, FontInfo &
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Gfx8BitFont * font_8bit = nullptr;
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/*
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* Step 1
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* dump the font file directly from the font descriptor and put the glyphs into the correct slots
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*
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* for 8bit + nonTrueType
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* re-encoding the font using a PostScript encoding list (glyph id <-> glpyh name)
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*
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* for 8bit + TrueType
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* sort the glpyhs as the original order, and later will map GID (instead of char code) to Unicode
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*
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* for CID + nonTrueType
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* Flatten the font
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*
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* for CID Truetype
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* same as 8bitTrueType, except for that we have to check 65536 charcodes
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*/
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if(!font->isCIDFont())
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if(get_metric_only)
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{
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font_8bit = dynamic_cast<Gfx8BitFont*>(font);
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maxcode = 0xff;
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if((suffix == ".ttf") || (suffix == ".ttc") || (suffix == ".otf"))
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{
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script_fout << "Reencode(\"original\")" << endl;
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FoFiTrueType *fftt = nullptr;
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if((fftt = FoFiTrueType::load((char*)filepath.c_str())) != nullptr)
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{
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code2GID = font_8bit->getCodeToGIDMap(fftt);
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code2GID_len = 256;
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delete fftt;
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}
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}
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else
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{
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// move the slot such that it's consistent with the encoding seen in PDF
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ofstream out(tmp_dir / (fn + "_.encoding"));
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add_tmp_file(fn+"_.encoding");
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out << format("/%1% [") % fn << endl;
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for(int i = 0; i < 256; ++i)
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{
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auto cn = font_8bit->getCharName(i);
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out << "/" << ((cn == nullptr) ? ".notdef" : cn) << endl;
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}
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out << "] def" << endl;
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script_fout << format("LoadEncodingFile(%1%)") % (tmp_dir / (fn+"_.encoding")) << endl;
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script_fout << format("Reencode(\"%1%\")") % fn << endl;
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}
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info.use_tounicode = false;
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}
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else
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{
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maxcode = 0xffff;
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if(suffix == ".ttf")
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/*
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* Step 1
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* dump the font file directly from the font descriptor and put the glyphs into the correct slots
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*
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* for 8bit + nonTrueType
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* re-encoding the font using a PostScript encoding list (glyph id <-> glpyh name)
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*
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* for 8bit + TrueType
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* sort the glpyhs as the original order, and later will map GID (instead of char code) to Unicode
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*
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* for CID + nonTrueType
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* Flatten the font
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*
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* for CID Truetype
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* same as 8bitTrueType, except for that we have to check 65536 charcodes
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*/
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if(!font->isCIDFont())
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{
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script_fout << "Reencode(\"original\")" << endl;
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font_8bit = dynamic_cast<Gfx8BitFont*>(font);
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maxcode = 0xff;
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if((suffix == ".ttf") || (suffix == ".ttc") || (suffix == ".otf"))
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{
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script_fout << "Reencode(\"original\")" << endl;
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FoFiTrueType *fftt = nullptr;
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if((fftt = FoFiTrueType::load((char*)filepath.c_str())) != nullptr)
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{
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code2GID = font_8bit->getCodeToGIDMap(fftt);
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code2GID_len = 256;
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delete fftt;
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}
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}
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else
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{
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// move the slot such that it's consistent with the encoding seen in PDF
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ofstream out(tmp_dir / (fn + "_.encoding"));
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add_tmp_file(fn+"_.encoding");
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GfxCIDFont * _font = dynamic_cast<GfxCIDFont*>(font);
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out << format("/%1% [") % fn << endl;
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for(int i = 0; i < 256; ++i)
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{
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auto cn = font_8bit->getCharName(i);
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out << "/" << ((cn == nullptr) ? ".notdef" : cn) << endl;
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}
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out << "] def" << endl;
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// code2GID has been stored for embedded CID fonts
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code2GID = _font->getCIDToGID();
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code2GID_len = _font->getCIDToGIDLen();
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script_fout << format("LoadEncodingFile(%1%)") % (tmp_dir / (fn+"_.encoding")) << endl;
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script_fout << format("Reencode(\"%1%\")") % fn << endl;
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}
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}
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else
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{
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script_fout << "CIDFlatten()" << endl;
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maxcode = 0xffff;
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if(suffix == ".ttf")
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{
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script_fout << "Reencode(\"original\")" << endl;
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GfxCIDFont * _font = dynamic_cast<GfxCIDFont*>(font);
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// code2GID has been stored for embedded CID fonts
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code2GID = _font->getCIDToGID();
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code2GID_len = _font->getCIDToGIDLen();
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}
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else
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{
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script_fout << "CIDFlatten()" << endl;
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}
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}
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}
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/*
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* Step 2
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* map charcode (or GID for CID truetype)
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* generate an Consortium encoding file and let fontforge handle it.
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*
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* - Always map to Unicode for 8bit TrueType fonts and CID fonts
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*
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* - For 8bit nonTruetype fonts:
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* Try to calculate the correct Unicode value from the glyph names, unless param->always_apply_tounicode is set
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*
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*/
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/*
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* Step 2
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* map charcode (or GID for CID truetype)
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* generate an Consortium encoding file and let fontforge handle it.
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*
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* - Always map to Unicode for 8bit TrueType fonts and CID fonts
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*
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* - For 8bit nonTruetype fonts:
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* Try to calculate the correct Unicode value from the glyph names, unless param->always_apply_tounicode is set
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*
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*/
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info.use_tounicode = ((suffix == ".ttf") || (font->isCIDFont()) || (param->always_apply_tounicode));
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info.use_tounicode = ((suffix == ".ttf") || (font->isCIDFont()) || (param->always_apply_tounicode));
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auto ctu = font->getToUnicode();
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auto ctu = font->getToUnicode();
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ofstream map_fout(tmp_dir / (fn + ".encoding"));
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add_tmp_file(fn+".encoding");
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ofstream map_fout(tmp_dir / (fn + ".encoding"));
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add_tmp_file(fn+".encoding");
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int cnt = 0;
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for(int i = 0; i <= maxcode; ++i)
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{
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if((suffix != ".ttf") && (font_8bit != nullptr) && (font_8bit->getCharName(i) == nullptr))
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continue;
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++ cnt;
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map_fout << format("0x%|1$X|") % ((code2GID && (i < code2GID_len))? code2GID[i] : i);
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Unicode u, *pu=&u;
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if(info.use_tounicode)
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int cnt = 0;
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for(int i = 0; i <= maxcode; ++i)
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{
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int n = 0;
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if(ctu)
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n = ctu->mapToUnicode(i, &pu);
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u = check_unicode(pu, n, i, font);
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if((suffix != ".ttf") && (font_8bit != nullptr) && (font_8bit->getCharName(i) == nullptr))
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continue;
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++ cnt;
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map_fout << format("0x%|1$X|") % ((code2GID && (i < code2GID_len))? code2GID[i] : i);
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Unicode u, *pu=&u;
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if(info.use_tounicode)
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{
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int n = 0;
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if(ctu)
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n = ctu->mapToUnicode(i, &pu);
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u = check_unicode(pu, n, i, font);
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}
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else
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{
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u = unicode_from_font(i, font);
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}
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map_fout << format(" 0x%|1$X|") % u;
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map_fout << format(" # 0x%|1$X|") % i;
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map_fout << endl;
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}
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else
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if(cnt > 0)
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{
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u = unicode_from_font(i, font);
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script_fout << format("LoadEncodingFile(%1%, \"%2%\")") % (tmp_dir / (fn+".encoding")) % fn << endl;
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script_fout << format("Reencode(\"%1%\", 1)") % fn << endl;
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}
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map_fout << format(" 0x%|1$X|") % u;
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map_fout << format(" # 0x%|1$X|") % i;
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map_fout << endl;
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if(ctu)
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ctu->decRefCnt();
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}
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if(cnt > 0)
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{
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script_fout << format("LoadEncodingFile(%1%, \"%2%\")") % (tmp_dir / (fn+".encoding")) % fn << endl;
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script_fout << format("Reencode(\"%1%\", 1)") % fn << endl;
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}
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if(ctu)
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ctu->decRefCnt();
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auto dest = ((param->single_html ? tmp_dir : dest_dir) / (fn+(param->font_suffix)));
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if(param->single_html)
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add_tmp_file(fn+(param->font_suffix));
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@ -307,9 +314,10 @@ void HTMLRenderer::embed_font(const path & filepath, GfxFont * font, FontInfo &
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* Firefox & Chrome interprets the values in different ways
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* Trying to unify them
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*/
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script_fout << format("Generate(%1%)") % dest << endl;
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add_tmp_file(fn + "_.ttf");
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script_fout << format("Generate(%1%)") % (tmp_dir / (fn + "_.ttf")) << endl;
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script_fout << "Close()" << endl;
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script_fout << format("Open(%1%, 1)") % dest << endl;
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script_fout << format("Open(%1%, 1)") % (tmp_dir / (fn + "_.ttf")) << endl;
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script_fout << ifstream(PDF2HTMLEX_DATA_PATH / UNIFY_SCRIPT_FILENAME).rdbuf();
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script_fout << format("Generate(%1%)") % dest << endl;
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script_fout.close();
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@ -346,8 +354,6 @@ void HTMLRenderer::embed_font(const path & filepath, GfxFont * font, FontInfo &
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{
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cerr << "Ascent: " << info.ascent << " Descent: " << info.descent << endl;
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}
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export_remote_font(info, param->font_suffix, param->font_format, font);
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}
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void HTMLRenderer::drawString(GfxState * state, GooString * s)
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