DenysMedvid/pdf2htmlEX
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better asc/des handling

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This commit is contained in:
Lu Wang 2012-08-31 12:45:16 +08:00
parent c99f725c72
commit e49459d21f
4 changed files with 39 additions and 31 deletions
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30
share/unify.pe Normal file
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@ -0,0 +1,30 @@
# script piece to unify the metrics
# by WangLu
# 2012.08.31
wa = GetOS2Value("WinAscent")
wd = GetOS2Value("WinDescent")
ta = GetOS2Value("TypoAscent")
td = GetOS2Value("TypoDescent")
ha = GetOS2Value("HHeadAscent")
hd = GetOS2Value("HHeadDescent")
a = wa
if (ta > a)
a = ta
endif
if (ha > a)
a = ha
endif
d = wd
if (-td > d)
d = -td
endif
if (-hd > d)
d = -hd)
endif
SetOS2Value("WinAscent", a)
SetOS2Value("WinDescent", d)
SetOS2Value("HHeadAscent", a)
SetOS2Value("HHeadDescent", -d)
Print(ta-td)
Print(a)
Print(d)

1
src/HTMLRenderer.h
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@ -296,6 +296,7 @@ class HTMLRenderer : public OutputDev
static const std::string NECK_HTML_FILENAME;
static const std::string TAIL_HTML_FILENAME;
static const std::string CSS_FILENAME;
static const std::string UNIFY_SCRIPT_FILENAME;
// for cross-platform purpose, use a "null" file instead of /dev/null
static const std::string NULL_FILENAME;
};

1
src/HTMLRenderer/general.cc
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@ -242,4 +242,5 @@ const std::string HTMLRenderer::HEAD_HTML_FILENAME = "head.html";
const std::string HTMLRenderer::NECK_HTML_FILENAME = "neck.html";
const std::string HTMLRenderer::TAIL_HTML_FILENAME = "tail.html";
const std::string HTMLRenderer::CSS_FILENAME = "all.css";
const std::string HTMLRenderer::UNIFY_SCRIPT_FILENAME = "unify.pe";
const std::string HTMLRenderer::NULL_FILENAME = "null";

38
src/HTMLRenderer/install.cc
View File

@ -18,6 +18,7 @@
#include "HTMLRenderer.h"
#include "namespace.h"
#include "config.h"
using std::all_of;
using std::max;
@ -259,30 +260,13 @@ void HTMLRenderer::install_embedded_font(GfxFont * font, const string & suffix,
* [Win|Typo|HHead][Ascent|Descent]
* Firefox & Chrome interprets the values in different ways
* Trying to unify them
*
* .pfa does not have such mess, convert to it and back
*/
add_tmp_file(fn+"_.pfa");
script_fout << format("Generate(%1%)") % (tmp_dir / (fn+"_.pfa")) << endl;
script_fout << "Close()" << endl;
script_fout << format("Open(%1%, 1)") % (tmp_dir / (fn+"_.pfa")) << endl;
script_fout << format("Generate(%1%)") % dest << endl;
script_fout << "Close()" << endl;
script_fout << format("Open(%1%, 1)") % dest << endl;
for(const string & s1 : {"Win", "Typo", "HHead"})
{
for(const string & s2 : {"Ascent", "Descent"})
{
script_fout << "Print(GetOS2Value(\"" << s1 << s2 << "\"))" << endl;
}
}
script_fout << "a=GetOS2Value(\"TypoAscent\")" << endl;
script_fout << "d=GetOS2Value(\"TypoDescent\")" << endl;
script_fout << "SetOS2Value(\"TypoAscent\", 0)" << endl;
script_fout << "SetOS2Value(\"TypoDescent\", -a-d)" << endl;
script_fout << ifstream(PDF2HTMLEX_DATA_PATH / UNIFY_SCRIPT_FILENAME).rdbuf();
script_fout << format("Generate(%1%)") % dest << endl;
script_fout.close();
if(system((boost::format("fontforge -script %1% 1>%2% 2>%3%") % script_path % (tmp_dir / (fn+".info")) % (tmp_dir / NULL_FILENAME)).str().c_str()) != 0)
cerr << "Warning: fontforge failed." << endl;
@ -291,21 +275,13 @@ void HTMLRenderer::install_embedded_font(GfxFont * font, const string & suffix,
add_tmp_file(NULL_FILENAME);
// read metric
int WinAsc, WinDes, TypoAsc, TypoDes, HHeadAsc, HHeadDes;
if(ifstream(tmp_dir / (fn+".info")) >> WinAsc >> WinDes >> TypoAsc >> TypoDes >> HHeadAsc >> HHeadDes)
int em, ascent, descent;
if(ifstream(tmp_dir / (fn+".info")) >> em >> ascent >> descent)
{
int em = TypoAsc - TypoDes;
if(em != 0)
{
/*
int a = max(WinAsc, max(TypoAsc, HHeadAsc));
int d = min(-WinDes, min(TypoDes, HHeadDes));
*/
int a = WinAsc;
int d = -WinDes;
info.ascent = ((double)a) / em;
info.descent = ((double)d) / em;
info.ascent = ((double)ascent) / em;
info.descent = -((double)descent) / em;
}
else
{