DenysMedvid/pdf2htmlEX
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new option --process-type3

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This commit is contained in:
Lu Wang 2013-09-21 13:56:57 +08:00
parent 7c0505ffec
commit 09203f61a4
3 changed files with 21 additions and 7 deletions
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7
pdf2htmlEX.1.in
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@ -184,6 +184,13 @@ Clear the fstype bits in TTF/OTF fonts.
Turn this on if Internet Explorer complains about 'Permission must be Installable' AND you have permission to do so. Turn this on if Internet Explorer complains about 'Permission must be Installable' AND you have permission to do so.
.TP
.B --process-type3 <0|1> (Default: 0)
If turned on, pdf2htmlEX will try to convert Type 3 fonts such that text can be rendered natively in HTML.
Otherwise all text with Type 3 fonts will be rendered as image.
This feature is highly experimental.
.SS Text .SS Text
.TP .TP

11
src/HTMLRenderer/font.cc
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@ -210,10 +210,10 @@ string HTMLRenderer::dump_type3_font (GfxFont * font, FontInfo & info)
tm_transform_bbox(font_matrix, transformed_bbox); tm_transform_bbox(font_matrix, transformed_bbox);
double transformed_bbox_width = transformed_bbox[2] - transformed_bbox[0]; double transformed_bbox_width = transformed_bbox[2] - transformed_bbox[0];
double transformed_bbox_height = transformed_bbox[3] - transformed_bbox[1]; double transformed_bbox_height = transformed_bbox[3] - transformed_bbox[1];
// we want the glyphs is rendered in a box of size around 100 x 100
// for rectangles, the longer edge should be 100
info.font_size_scale = std::max(transformed_bbox_width, transformed_bbox_height); info.font_size_scale = std::max(transformed_bbox_width, transformed_bbox_height);
// we want the glyphs is rendered in a box of size around GLYPH_DUMP_EM_SIZE x GLYPH_DUMP_EM_SIZE
// for rectangles, the longer edge should be GLYPH_DUMP_EM_SIZE
const double GLYPH_DUMP_EM_SIZE = 100.0; const double GLYPH_DUMP_EM_SIZE = 100.0;
double scale = GLYPH_DUMP_EM_SIZE / info.font_size_scale; double scale = GLYPH_DUMP_EM_SIZE / info.font_size_scale;
@ -242,6 +242,7 @@ string HTMLRenderer::dump_type3_font (GfxFont * font, FontInfo & info)
auto glyph_width = ((Gfx8BitFont*)font)->getWidth(code); auto glyph_width = ((Gfx8BitFont*)font)->getWidth(code);
#if 1
{ {
// pain the glyph // pain the glyph
cairo_set_font_face(cr, cur_font->getFontFace()); cairo_set_font_face(cr, cur_font->getFontFace());
@ -273,8 +274,7 @@ string HTMLRenderer::dump_type3_font (GfxFont * font, FontInfo & info)
double dummy = 0; double dummy = 0;
cairo_matrix_transform_distance(&m2, &glyph_width, &dummy); cairo_matrix_transform_distance(&m2, &glyph_width, &dummy);
} }
#else
/*
{ {
// manually draw the char to get the metrics // manually draw the char to get the metrics
// adapted from _render_type3_glyph of poppler // adapted from _render_type3_glyph of poppler
@ -308,6 +308,7 @@ string HTMLRenderer::dump_type3_font (GfxFont * font, FontInfo & info)
// calculate the position of origin // calculate the position of origin
cairo_matrix_transform_point(&ctm, &ox, &oy); cairo_matrix_transform_point(&ctm, &ox, &oy);
oy -= transformed_bbox_height * scale;
// calculate glyph width // calculate glyph width
double dummy = 0; double dummy = 0;
cairo_matrix_transform_distance(&ctm, &glyph_width, &dummy); cairo_matrix_transform_distance(&ctm, &glyph_width, &dummy);
@ -337,7 +338,7 @@ string HTMLRenderer::dump_type3_font (GfxFont * font, FontInfo & info)
delete gfx; delete gfx;
delete output_dev; delete output_dev;
} }
*/ #endif
{ {
auto status = cairo_status(cr); auto status = cairo_status(cr);

10
src/pdf2htmlEX.cc
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@ -146,6 +146,7 @@ void parse_options (int argc, char **argv)
.add("stretch-narrow-glyph", &param.stretch_narrow_glyph, 0, "stretch narrow glyphs instead of padding them") .add("stretch-narrow-glyph", &param.stretch_narrow_glyph, 0, "stretch narrow glyphs instead of padding them")
.add("squeeze-wide-glyph", &param.squeeze_wide_glyph, 1, "shrink wide glyphs instead of truncating them") .add("squeeze-wide-glyph", &param.squeeze_wide_glyph, 1, "shrink wide glyphs instead of truncating them")
.add("override-fstype", &param.override_fstype, 0, "clear the fstype bits in TTF/OTF fonts") .add("override-fstype", &param.override_fstype, 0, "clear the fstype bits in TTF/OTF fonts")
.add("process-type3", &param.process_type3, 0, "convert Type 3 fonts for web (experimental)")
// text // text
.add("heps", &param.h_eps, 1.0, "horizontal threshold for merging text, in pixels") .add("heps", &param.h_eps, 1.0, "horizontal threshold for merging text, in pixels")
@ -299,8 +300,13 @@ void check_param()
exit(EXIT_FAILURE); exit(EXIT_FAILURE);
} }
//test #if not ENABLE_SVG
param.process_type3 = 1; if(param.process_type3)
{
cerr << "process-type3 is enabled, however SVG support is not built in this version of pdf2htmlEX." << endl;
exit(EXIT_FAILURE);
}
#endif
} }
int main(int argc, char **argv) int main(int argc, char **argv)