DenysMedvid/pdf2htmlEX
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Code

working on type3 processing

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This commit is contained in:
Lu Wang 2013-09-19 05:56:57 +08:00
parent fdcf9e634c
commit 8c4e14b1fa
11 changed files with 97 additions and 33 deletions
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4
src/BackgroundRenderer/CairoBackgroundRenderer.cc
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@ -30,11 +30,11 @@ void CairoBackgroundRenderer::drawChar(GfxState *state, double x, double y,
// - in fallback mode
// - OR there is special filling method
// - OR using a writing mode font
// - OR using a Type 3 font
// - OR using a Type 3 font while param.process_type3 is not enabled
if((param.fallback)
|| ( (state->getFont())
&& ( (state->getFont()->getWMode())
|| (state->getFont()->getType() == fontType3)
|| ((state->getFont()->getType() == fontType3) && (!param.process_type3))
)
)
)

4
src/BackgroundRenderer/CairoBackgroundRenderer.h
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@ -37,6 +37,10 @@ public:
virtual void render_page(PDFDoc * doc, int pageno);
virtual void embed_image(int pageno);
// Does this device use beginType3Char/endType3Char? Otherwise,
// text in Type 3 fonts will be drawn with drawChar/drawString.
virtual GBool interpretType3Chars() { return !param.process_type3; }
virtual void drawChar(GfxState *state, double x, double y,
double dx, double dy,
double originX, double originY,

6
src/BackgroundRenderer/SplashBackgroundRenderer.cc
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@ -53,11 +53,11 @@ void SplashBackgroundRenderer::drawChar(GfxState *state, double x, double y,
// - in fallback mode
// - OR there is special filling method
// - OR using a writing mode font
// - OR using a Type 3 font
// - OR using a Type 3 font while param.process_type3 is not enabled
if((param.fallback)
|| ( (state->getFont())
&& ( (state->getFont()->getWMode())
|| (state->getFont()->getType() == fontType3)
|| ((state->getFont()->getType() == fontType3) && (!param.process_type3))
)
)
)
@ -136,7 +136,7 @@ void SplashBackgroundRenderer::embed_image(int pageno)
}
}
// There will be mem leak when exception is thrown !
// There might be mem leak when exception is thrown !
void SplashBackgroundRenderer::dump_image(const char * filename, int x1, int y1, int x2, int y2)
{
int width = x2 - x1 + 1;

4
src/BackgroundRenderer/SplashBackgroundRenderer.h
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@ -39,6 +39,10 @@ public:
virtual void render_page(PDFDoc * doc, int pageno);
virtual void embed_image(int pageno);
// Does this device use beginType3Char/endType3Char? Otherwise,
// text in Type 3 fonts will be drawn with drawChar/drawString.
virtual GBool interpretType3Chars() { return !param.process_type3; }
#if POPPLER_OLDER_THAN_0_23_0
virtual void startPage(int pageNum, GfxState *state);
#else

81
src/HTMLRenderer/font.cc
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@ -47,6 +47,9 @@ using std::endl;
string HTMLRenderer::dump_embedded_font (GfxFont * font, long long fn_id)
{
if(font->getType() == fontType3)
return dump_type3_font(font, fn_id);
Object obj, obj1, obj2;
Object font_obj, font_obj2, fontdesc_obj;
string suffix;
@ -190,23 +193,26 @@ string HTMLRenderer::dump_type3_font (GfxFont * font, long long fn_id)
double glyph_width = font_bbox[2] - font_bbox[0];
double glyph_height = font_bbox[3] - font_bbox[1];
glyph_width /= 10;
glyph_height /= 10;
// glyph_width /= 10;
// glyph_height /= 10;
for(int i = 0; i < 256; ++i)
// dumpy each glyph into svg and combine them
ffw_new_font();
for(int code = 0; code < 256; ++code)
{
if(!used_map[i]) continue;
if(!used_map[code]) continue;
cairo_glyph_t glyph;
glyph.index = cur_font->getGlyph(i, nullptr, 0);
glyph.index = cur_font->getGlyph(code, nullptr, 0);
glyph.x = 0;
glyph.y = glyph_height;
cairo_surface_t * surface = nullptr;
{
auto fn = str_fmt("/tmp/pdf2htmlEX/f%x-%x.svg", fn_id, i);
surface = cairo_svg_surface_create((char*)fn, glyph_height, glyph_width);
}
string glyph_filename = (char*)str_fmt("%s/f%llx-%x.svg", param.tmp_dir.c_str(), fn_id, code);
tmp_files.add(glyph_filename);
surface = cairo_svg_surface_create(glyph_filename.c_str(), glyph_height, glyph_width);
cairo_svg_surface_restrict_to_version(surface, CAIRO_SVG_VERSION_1_2);
cairo_surface_set_fallback_resolution(surface, param.h_dpi, param.v_dpi);
cairo_t * cr = cairo_create(surface);
@ -217,17 +223,14 @@ string HTMLRenderer::dump_type3_font (GfxFont * font, long long fn_id)
double * font_matrix = font->getFontMatrix();
cairo_matrix_init(&matrix, font_matrix[0], font_matrix[1], font_matrix[2], font_matrix[3], font_matrix[4], font_matrix[5]);
cairo_set_font_matrix(cr, &matrix);
*/
/*
cairo_matrix_init_identity(&matrix);
// cairo_matrix_scale(&matrix, 10, 10);
cairo_transform(cr, &matrix);
*/
cairo_set_font_size(cr, 100);
cairo_set_font_size(cr, 1000);
cairo_set_source_rgb(cr, 0., 0., 0.);
// cairo_set_source_rgb(cr, 0., 0., 0.);
cairo_set_font_face(cr, cur_font->getFontFace());
cairo_show_glyphs(cr, &glyph, 1);
@ -245,8 +248,19 @@ string HTMLRenderer::dump_type3_font (GfxFont * font, long long fn_id)
if(status)
throw string("Error in cairo: ") + cairo_status_to_string(status);
}
ffw_import_svg_glyph(code, glyph_filename.c_str());
}
return "";
// we choose ttf as it does not use char names
// or actually we don't use char names for ttf (see embed_font)
string font_filename = (char*)str_fmt("%s/f%llx.ttf", param.tmp_dir.c_str(), fn_id);
tmp_files.add(font_filename);
ffw_save(font_filename.c_str());
ffw_close();
// combine glyphs
return font_filename;
#else
return "";
#endif
@ -318,6 +332,7 @@ void HTMLRenderer::embed_font(const string & filepath, GfxFont * font, FontInfo
/*
* Step 1
* dump the font file directly from the font descriptor and put the glyphs into the correct slots *
*
* for 8bit + nonTrueType
* re-encoding the font by glyph names
*
@ -337,12 +352,18 @@ void HTMLRenderer::embed_font(const string & filepath, GfxFont * font, FontInfo
maxcode = 0xff;
if(is_truetype_suffix(suffix))
{
ffw_reencode_glyph_order();
if(FoFiTrueType * fftt = FoFiTrueType::load((char*)filepath.c_str()))
if(info.is_type3)
{
code2GID = font_8bit->getCodeToGIDMap(fftt);
code2GID_len = 256;
delete fftt;
}
else
{
ffw_reencode_glyph_order();
if(FoFiTrueType * fftt = FoFiTrueType::load((char*)filepath.c_str()))
{
code2GID = font_8bit->getCodeToGIDMap(fftt);
code2GID_len = 256;
delete fftt;
}
}
}
else
@ -374,7 +395,7 @@ void HTMLRenderer::embed_font(const string & filepath, GfxFont * font, FontInfo
{
name_conflict_warned = true;
//TODO: may be resolved using advanced font properties?
cerr << "Warning: encoding confliction detected in font: " << hex << info.id << dec << endl;
cerr << "Warning: encoding conflict detected in font: " << hex << info.id << dec << endl;
}
}
}
@ -717,13 +738,21 @@ const FontInfo * HTMLRenderer::install_font(GfxFont * font)
<< endl;
}
if(font->getType() == fontType3)
if(new_font_info.is_type3)
{
//test
//dump_type3_font(font, new_fn_id);
#if ENABLE_SVG
if(param.process_type3)
{
install_embedded_font(font, new_font_info);
}
else
{
export_remote_default_font(new_fn_id);
}
#else
cerr << "Type 3 fonts are unsupported and will be rendered as Image" << endl;
export_remote_default_font(new_fn_id);
#endif
return &new_font_info;
}
if(font->getWMode()) {
@ -762,7 +791,7 @@ const FontInfo * HTMLRenderer::install_font(GfxFont * font)
export_remote_default_font(new_fn_id);
}
return &(cur_info_iter->second);
return &new_font_info;
}
void HTMLRenderer::install_embedded_font(GfxFont * font, FontInfo & info)

2
src/HTMLRenderer/state.cc
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@ -207,7 +207,7 @@ void HTMLRenderer::check_state_change(GfxState * state)
// The width of the type 3 font text, if shown, is likely to be wrong
// So we will create separate (absolute positioned) blocks for them, such that it won't affect other text
// TODO: consider the font matrix and estimate the metrics
if(new_font_info->is_type3 || cur_text_state.font_info->is_type3)
if((new_font_info->is_type3 || cur_text_state.font_info->is_type3) && (!param.process_type3))
{
set_line_state(new_line_state, NLS_NEWLINE);
}

2
src/HTMLRenderer/text.cc
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@ -35,7 +35,7 @@ void HTMLRenderer::drawString(GfxState * state, GooString * s)
// For type 3 fonts, due to the font matrix, still it's hard to show it on HTML
if( (font == nullptr)
|| (font->getWMode())
// || (font->getType() == fontType3)
|| ((font->getType() == fontType3) && (!param.process_type3))
)
{
return;

1
src/Param.h
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@ -49,6 +49,7 @@ struct Param
int stretch_narrow_glyph;
int squeeze_wide_glyph;
int override_fstype;
int process_type3;
// text
double h_eps, v_eps;

3
src/pdf2htmlEX.cc
View File

@ -298,6 +298,9 @@ void check_param()
cerr << "Image format not supported: " << param.bg_format << endl;
exit(EXIT_FAILURE);
}
//test
//param.process_type3 = 1;
}
int main(int argc, char **argv)

21
src/util/ffw.c
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@ -103,6 +103,12 @@ long ffw_get_version(void)
return library_version_configuration.library_source_versiondate;
}
void ffw_new_font()
{
assert((cur_fv == NULL) && "Previous font is not destroyed");
cur_fv = FVAppend(_FontViewCreate(SplineFontNew()));
}
void ffw_load_font(const char * filename)
{
assert((cur_fv == NULL) && "Previous font is not destroyed");
@ -418,6 +424,21 @@ void ffw_set_widths(int * width_list, int mapping_len,
}
}
void ffw_import_svg_glyph(int code, const char * filename)
{
int enc = SFFindSlot(cur_fv->sf, cur_fv->map, code, "");
if(enc == -1)
return;
SFMakeChar(cur_fv->sf, cur_fv->map, enc);
memset(cur_fv->selected, 0, cur_fv->map->enccount);
cur_fv->selected[enc] = 1;
int ok = FVImportImages(cur_fv, (char*)filename, fv_svg, 0, -1);
if(!ok)
err("Import SVG glyph failed");
}
void ffw_auto_hint(void)
{
// convert to quadratic

2
src/util/ffw.h
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@ -27,6 +27,7 @@ long ffw_get_version(void);
////////////////////////
// load & save
void ffw_new_font();
void ffw_load_font(const char * filename);
void ffw_prepare_font(void);
@ -55,6 +56,7 @@ void ffw_set_widths(int * width_list, int mapping_len,
////////////////////////
// others
void ffw_import_svg_glyph(int code, const char * filename);
void ffw_auto_hint(void);
void ffw_override_fstype(void);