DenysMedvid/pdf2htmlEX
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tweaking font-size-multiplier and auto-hint

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This commit is contained in:
Lu Wang 2012-09-21 18:12:14 +08:00
parent acfcb62bfc
commit 661b1aa92a
6 changed files with 24 additions and 17 deletions
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6
README.md
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@ -54,7 +54,7 @@ MacPorts and Homebrew are coming soon
### Windows
I've tested with CYGWIN without any problem, and I believe it also works on MinGW without many modifications.
I have tested with CYGWIN without any problem, and I believe it also works on MinGW without many modifications.
### Build from source
@ -79,6 +79,10 @@ I've tested with CYGWIN without any problem, and I believe it also works on MinG
pdf2htmlEX --help
## FAQ
[here](https://github.com/coolwanglu/pdf2htmlEX/wiki/FAQ)
## LICENSE
GPLv2 & GPLv3 Dual licensed

2
pdf2htmlEX.1.in
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@ -87,7 +87,7 @@ pdf2htmlEX would try to optimize the generated HTML file moving Text within this
.B --space-threshold <ratio> (Default: 1.0/6)
pdf2htmlEX would insert a whitespace character ' ' if the distance between two consecutive letters in the same line is wider than ratio * font_size.
.TP
.B --font-size-multiplier <ratio> (Default: 1.0)
.B --font-size-multiplier <ratio> (Default: 3.0)
Many web browsers limit the minimum font size, and many would round the given font size, which results in incorrect rendering.
Specify a ratio greater than 1 would resolve this issue, however it might freeze some browsers.

1
src/HTMLRenderer/text.cc
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@ -159,6 +159,7 @@ string HTMLRenderer::dump_embedded_font (GfxFont * font, long long fn_id)
}
void HTMLRenderer::embed_font(const string & filepath, GfxFont * font, FontInfo & info, bool get_metric_only)
{
ffw_load_font(filepath.c_str());
if(param->auto_hint)

26
src/ffw.c
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@ -260,19 +260,19 @@ void ffw_metric(double * ascent, double * descent, int * em_size)
sf->ascent = min(floor(bb.maxy+0.5), em);
sf->descent = em - bb.maxy;
info->os2_winascent = a;
info->os2_typoascent = a;
info->hhead_ascent = a;
info->winascent_add = 0;
info->typoascent_add = 0;
info->hheadascent_add = 0;
info->os2_winascent = 0;
info->os2_typoascent = 0;
info->hhead_ascent = 0;
info->winascent_add = 1;
info->typoascent_add = 1;
info->hheadascent_add = 1;
info->os2_windescent = -d;
info->os2_typodescent = d;
info->hhead_descent = d;
info->windescent_add = 0;
info->typodescent_add = 0;
info->hheaddescent_add = 0;
info->os2_windescent = 0;
info->os2_typodescent = 0;
info->hhead_descent = 0;
info->windescent_add = 1;
info->typodescent_add = 1;
info->hheaddescent_add = 1;
info->os2_typolinegap = 0;
info->linegap = 0;
@ -310,6 +310,8 @@ void ffw_auto_hint(void)
// convert to quadratic
if(!(cur_fv->sf->layers[ly_fore].order2))
{
return;
SFCloseAllInstrs(cur_fv->sf);
SFConvertToOrder2(cur_fv->sf);
}

4
src/pdf2htmlEX.cc
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@ -73,8 +73,8 @@ void parse_options (int argc, char **argv)
.add("heps", &param.h_eps, 1.0, "max tolerated horizontal offset (in pixels)")
.add("veps", &param.v_eps, 1.0, "max tolerated vertical offset (in pixels)")
.add("space-threshold", &param.space_threshold, (1.0/8), "distance no thiner than (threshold * em) will be considered as a space character")
.add("font-size-multiplier", &param.font_size_multiplier, 1.0, "setting a value greater than 1 would increase the rendering accuracy")
.add("auto-hint", &param.auto_hint, 0, "[Experimental] Whether to generate hints for fonts")
.add("font-size-multiplier", &param.font_size_multiplier, 3.0, "setting a value greater than 1 would increase the rendering accuracy")
.add("auto-hint", &param.auto_hint, 1, "[Experimental] Whether to generate hints for fonts")
.add("tounicode", &param.tounicode, 0, "Specify how to deal with ToUnicode map, 0 for auto, 1 for forced, -1 for disabled")
.add("space-as-offset", &param.space_as_offset, 0, "treat space characters as offsets")

2
test/test.py
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@ -11,7 +11,7 @@ with open('out.html','w') as outf:
if not f.lower().endswith('.pdf'):
continue
print f
os.system('pdf2htmlEX -l 10 --dest-dir html "%s/%s"' % (DIR,f))
os.system('pdf2htmlEX --dest-dir html "%s/%s"' % (DIR,f))
ff = f[:-3]
outf.write('<a href="html/%shtml" target="pdf">%s</a><br/>' % (ff,ff))
outf.flush();