tweaking font-size-multiplier and auto-hint

README.md

@@ -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

pdf2htmlEX.1.in

@@ -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.

src/HTMLRenderer/text.cc

@@ -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)

src/ffw.c

@@ -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);
     }

src/pdf2htmlEX.cc

@@ -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")
 

test/test.py

@@ -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();