mirror of
https://github.com/pdf2htmlEX/pdf2htmlEX.git
synced 2024-12-22 04:50:09 +00:00
clean code; add support for letter-spacing, word-spacing, horizontal-scale and rise
This commit is contained in:
Lu Wang
parent
29d41573ef
commit
87204a9e9e
@ -21,7 +21,7 @@
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position:absolute;
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white-space:pre;
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}
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.l > .w {
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.l > ._ {
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display:inline-block;
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font-family: monospace;
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}
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@ -39,16 +39,18 @@
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*
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* p - Page
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* l - Line
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* w - White space
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* _ - white space
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* i - Image
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*
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* Reusable CSS classes
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*
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* t<hex> - Transform matrix
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* f<hex> - Font (also for font names)
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* s<hex> - font Size
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* w<hex> - White space
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* t<hex> - Transform matrix
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* l<hex> - Letter spacing
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* w<hex> - Word spacing
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* c<hex> - Color
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* _<hex> - white space
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*
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*/
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@ -93,13 +95,26 @@ class HTMLRenderer : public OutputDev
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* We just mark as changed, and recheck if they have been changed when we are about to output a new string
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*/
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virtual void updateAll(GfxState * state);
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virtual void updateFont(GfxState * state);
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virtual void updateTextMat(GfxState * state);
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virtual void updateCTM(GfxState * state, double m11, double m12, double m21, double m22, double m31, double m32);
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virtual void updateRise(GfxState * state);
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virtual void updateTextPos(GfxState * state);
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virtual void updateTextShift(GfxState * state, double shift);
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virtual void updateFont(GfxState * state);
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virtual void updateCTM(GfxState * state, double m11, double m12, double m21, double m22, double m31, double m32);
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virtual void updateTextMat(GfxState * state);
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virtual void updateHorizScaling(GfxState * state);
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virtual void updateCharSpace(GfxState * state);
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virtual void updateWordSpace(GfxState * state);
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virtual void updateFillColor(GfxState * state);
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/*
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* Rendering
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*/
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virtual void drawString(GfxState * state, GooString * s);
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virtual void drawImage(GfxState * state, Object * ref, Stream * str, int width, int height, GfxImageColorMap * colorMap, GBool interpolate, int *maskColors, GBool inlineImg);
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@ -121,9 +136,11 @@ class HTMLRenderer : public OutputDev
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void install_external_font (GfxFont * font, long long fn_id);
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long long install_font_size(double font_size);
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long long install_whitespace(double ws_width, double & actual_width);
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long long install_transform_matrix(const double * tm);
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long long install_letter_space(double letter_space);
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long long install_word_space(double word_space);
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long long install_color(const GfxRGB * rgb);
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long long install_whitespace(double ws_width, double & actual_width);
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////////////////////////////////////////////////////
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// export css styles
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@ -136,9 +153,11 @@ class HTMLRenderer : public OutputDev
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void export_remote_default_font(long long fn_id);
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void export_local_font(long long fn_id, GfxFont * font, const std::string & original_font_name, const std::string & cssfont);
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void export_font_size(long long fs_id, double font_size);
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void export_whitespace(long long ws_id, double ws_width);
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void export_transform_matrix(long long tm_id, const double * tm);
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void export_letter_space(long long ls_id, double letter_space);
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void export_word_space(long long ws_id, double word_space);
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void export_color(long long color_id, const GfxRGB * rgb);
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void export_whitespace(long long ws_id, double ws_width);
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////////////////////////////////////////////////////
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// state tracking
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@ -165,26 +184,46 @@ class HTMLRenderer : public OutputDev
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////////////////////////////////////////////////////
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// if we have a pending opened line
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bool line_opened;
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// The order is according to the appearance in check_state_change
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// any state changed
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bool all_changed;
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// rise
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double cur_rise;
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bool rise_changed;
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// current position
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double cur_tx, cur_ty; // real text position, in text coords
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bool text_pos_changed;
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// font & size
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long long cur_fn_id;
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double cur_font_size;
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long long cur_fs_id;
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bool font_changed;
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// transform matrix
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long long cur_tm_id;
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bool ctm_changed;
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bool text_mat_changed;
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// horizontal scaling
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bool hori_scale_changed;
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// this is CTM * TextMAT in PDF, not only CTM
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// [4] and [5] are ignored, we'll calculate the position of the origin separately
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// [4] and [5] are ignored,
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// as we'll calculate the position of the origin separately
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// TODO: changed this for images
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double cur_ctm[6]; // unscaled
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// letter spacing
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long long cur_ls_id;
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double cur_letter_space;
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bool letter_space_changed;
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// word spacing
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long long cur_ws_id;
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double cur_word_space;
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bool word_space_changed;
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// color
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long long cur_color_id;
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GfxRGB cur_color;
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bool color_changed;
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@ -208,10 +247,16 @@ class HTMLRenderer : public OutputDev
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std::unordered_map<long long, FontInfo> font_name_map;
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std::map<double, long long> font_size_map;
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std::map<double, long long> whitespace_map;
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std::map<TM, long long> transform_matrix_map;
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std::map<double, long long> letter_space_map;
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std::map<double, long long> word_space_map;
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std::map<GfxRGB, long long> color_map;
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std::map<double, long long> whitespace_map;
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int image_count;
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const Param * param;
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@ -94,11 +94,6 @@ void HTMLRenderer::export_font_size (long long fs_id, double font_size)
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allcss_fout << format(".s%|1$x|{font-size:%2%px;}") % fs_id % font_size << endl;
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}
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void HTMLRenderer::export_whitespace (long long ws_id, double ws_width)
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{
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allcss_fout << format(".w%|1$x|{width:%2%px;}") % ws_id % ws_width << endl;
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}
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void HTMLRenderer::export_transform_matrix (long long tm_id, const double * tm)
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{
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allcss_fout << format(".t%|1$x|{") % tm_id;
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@ -128,10 +123,25 @@ void HTMLRenderer::export_transform_matrix (long long tm_id, const double * tm)
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allcss_fout << "}" << endl;
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}
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void HTMLRenderer::export_color(long long color_id, const GfxRGB * rgb)
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void HTMLRenderer::export_letter_space (long long ls_id, double letter_space)
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{
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allcss_fout << format(".l%|1$x|{letter-spacing:%2%px;}") % ls_id % letter_space << endl;
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}
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void HTMLRenderer::export_word_space (long long ws_id, double word_space)
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{
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allcss_fout << format(".w%|1$x|{word-spacing:%2%px;}") % ws_id % word_space << endl;
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}
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void HTMLRenderer::export_color (long long color_id, const GfxRGB * rgb)
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{
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allcss_fout << format(".c%|1$x|{color:rgb(%2%,%3%,%4%);}")
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% color_id % (int)colToByte(rgb->r) % (int)colToByte(rgb->g) % (int)colToByte(rgb->b)
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<< endl;
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}
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void HTMLRenderer::export_whitespace (long long ws_id, double ws_width)
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{
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allcss_fout << format("._%|1$x|{width:%2%px;}") % ws_id % ws_width << endl;
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}
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@ -30,6 +30,9 @@ HTMLRenderer::HTMLRenderer(const Param * param)
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install_font_size(0);
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install_transform_matrix(id_matrix);
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install_letter_space(0);
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install_word_space(0);
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GfxRGB black;
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black.r = black.g = black.b = 0;
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@ -158,18 +161,27 @@ void HTMLRenderer::startPage(int pageNum, GfxState *state)
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html_fout << format(");background-position:0 0;background-size:%1%px %2%px;background-repeat:no-repeat;\">") % pageWidth % pageHeight;
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cur_fn_id = cur_fs_id = cur_tm_id = cur_color_id = 0;
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cur_tx = cur_ty = 0;
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cur_font_size = 0;
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cur_rise = 0;
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cur_fn_id = cur_fs_id = 0;
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cur_font_size = 0;
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cur_tm_id = 0;
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memcpy(cur_ctm, id_matrix, sizeof(cur_ctm));
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cur_ls_id = cur_ws_id = 0;
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cur_letter_space = cur_word_space = 0;
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cur_color_id = 0;
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cur_color.r = cur_color.g = cur_color.b = 0;
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cur_tx = cur_ty = 0;
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memcpy(draw_ctm, id_matrix, sizeof(draw_ctm));
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draw_font_size = 0;
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draw_scale = 1.0;
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draw_tx = draw_ty = 0;
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cur_color.r = cur_color.g = cur_color.b = 0;
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reset_state_track();
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}
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@ -237,22 +237,6 @@ long long HTMLRenderer::install_font_size(double font_size)
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return new_fs_id;
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}
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long long HTMLRenderer::install_whitespace(double ws_width, double & actual_width)
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{
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auto iter = whitespace_map.lower_bound(ws_width - param->h_eps);
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if((iter != whitespace_map.end()) && (abs(iter->first - ws_width) < param->h_eps))
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{
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actual_width = iter->first;
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return iter->second;
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}
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actual_width = ws_width;
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long long new_ws_id = whitespace_map.size();
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whitespace_map.insert(make_pair(ws_width, new_ws_id));
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export_whitespace(new_ws_id, ws_width);
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return new_ws_id;
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}
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long long HTMLRenderer::install_transform_matrix(const double * tm)
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{
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TM m(tm);
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@ -266,6 +250,30 @@ long long HTMLRenderer::install_transform_matrix(const double * tm)
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return new_tm_id;
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}
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long long HTMLRenderer::install_letter_space(double letter_space)
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{
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auto iter = letter_space_map.lower_bound(letter_space - EPS);
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if((iter != letter_space_map.end()) && (_equal(iter->first, letter_space)))
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return iter->second;
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long long new_ls_id = letter_space_map.size();
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letter_space_map.insert(make_pair(letter_space, new_ls_id));
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export_letter_space(new_ls_id, letter_space);
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return new_ls_id;
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}
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long long HTMLRenderer::install_word_space(double word_space)
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{
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auto iter = word_space_map.lower_bound(word_space - EPS);
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if((iter != word_space_map.end()) && (_equal(iter->first, word_space)))
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return iter->second;
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long long new_ws_id = word_space_map.size();
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word_space_map.insert(make_pair(word_space, new_ws_id));
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export_word_space(new_ws_id, word_space);
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return new_ws_id;
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}
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long long HTMLRenderer::install_color(const GfxRGB * rgb)
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{
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const GfxRGB & c = *rgb;
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@ -279,3 +287,20 @@ long long HTMLRenderer::install_color(const GfxRGB * rgb)
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return new_color_id;
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}
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long long HTMLRenderer::install_whitespace(double ws_width, double & actual_width)
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{
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// ws_width is already mulitpled by draw_scale
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auto iter = whitespace_map.lower_bound(ws_width - param->h_eps);
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if((iter != whitespace_map.end()) && (abs(iter->first - ws_width) < param->h_eps))
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{
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actual_width = iter->first;
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return iter->second;
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}
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actual_width = ws_width;
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long long new_ws_id = whitespace_map.size();
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whitespace_map.insert(make_pair(ws_width, new_ws_id));
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export_whitespace(new_ws_id, ws_width);
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return new_ws_id;
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}
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@ -11,34 +11,97 @@
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#include "HTMLRenderer.h"
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#include "namespace.h"
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void HTMLRenderer::updateAll(GfxState * state)
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{
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all_changed = true;
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updateTextPos(state);
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}
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void HTMLRenderer::updateRise(GfxState * state)
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{
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rise_changed = true;
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}
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void HTMLRenderer::updateTextPos(GfxState * state)
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{
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text_pos_changed = true;
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cur_tx = state->getLineX();
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cur_ty = state->getLineY();
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}
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void HTMLRenderer::updateTextShift(GfxState * state, double shift)
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{
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text_pos_changed = true;
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cur_tx -= shift * 0.001 * state->getFontSize() * state->getHorizScaling();
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}
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void HTMLRenderer::updateFont(GfxState * state)
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{
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font_changed = true;
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}
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void HTMLRenderer::updateCTM(GfxState * state, double m11, double m12, double m21, double m22, double m31, double m32)
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{
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ctm_changed = true;
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}
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void HTMLRenderer::updateTextMat(GfxState * state)
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{
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text_mat_changed = true;
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}
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void HTMLRenderer::updateHorizScaling(GfxState * state)
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{
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hori_scale_changed = true;
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}
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void HTMLRenderer::updateCharSpace(GfxState * state)
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{
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letter_space_changed = true;
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}
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void HTMLRenderer::updateWordSpace(GfxState * state)
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{
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word_space_changed = true;
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}
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void HTMLRenderer::updateFillColor(GfxState * state)
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{
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color_changed = true;
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}
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void HTMLRenderer::check_state_change(GfxState * state)
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{
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// DEPENDENCY WARNING
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// don't adjust the order of state checking
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bool close_line = false;
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bool need_recheck_position = false;
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bool need_rescale_font = false;
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// rise
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if(all_changed || rise_changed)
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{
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double new_rise = state->getRise();
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if(!_equal(cur_rise, new_rise))
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{
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need_recheck_position = true;
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cur_rise = new_rise;
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}
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}
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// text position
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// we've been tracking the text position positively in update... function
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if(all_changed || text_pos_changed)
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{
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if(!(abs(cur_ty - draw_ty) * draw_scale < param->v_eps))
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{
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close_line = true;
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draw_ty = cur_ty;
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draw_tx = cur_tx;
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}
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need_rescale_font = true;
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}
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// TODO, we may use nested span if only color has been changed
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if(all_changed || color_changed)
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// draw_tx, draw_ty
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// depends: rise & text position
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if(need_recheck_position)
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{
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GfxRGB new_color;
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state->getFillRGB(&new_color);
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if(!((new_color.r == cur_color.r) && (new_color.g == cur_color.g) && (new_color.b == cur_color.b)))
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// it's ok to use the old draw_scale
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// should draw_scale be updated, we'll close the line anyway
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if(!(abs((cur_ty + cur_rise) - draw_ty) * draw_scale < param->v_eps))
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{
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close_line = true;
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cur_color = new_color;
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cur_color_id = install_color(&new_color);
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}
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}
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bool need_rescale_font = false;
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// font name & size
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if(all_changed || font_changed)
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{
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long long new_fn_id = install_font(state->getFont());
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@ -49,22 +112,25 @@ void HTMLRenderer::check_state_change(GfxState * state)
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cur_fn_id = new_fn_id;
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}
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if(!_equal(cur_font_size, state->getFontSize()))
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double new_font_size = state->getFontSize();
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if(!_equal(cur_font_size, new_font_size))
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{
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cur_font_size = state->getFontSize();
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need_rescale_font = true;
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cur_font_size = new_font_size;
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}
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}
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// TODO
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// Rise, HorizScale etc
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if(all_changed || text_mat_changed || ctm_changed)
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// ctm & text ctm & hori scale
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if(all_changed || ctm_changed || text_mat_changed || hori_scale_changed)
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{
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double new_ctm[6];
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double * m1 = state->getCTM();
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double * m2 = state->getTextMat();
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new_ctm[0] = m1[0] * m2[0] + m1[2] * m2[1];
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new_ctm[1] = m1[1] * m2[0] + m1[3] * m2[1];
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const double * m1 = state->getCTM();
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const double * m2 = state->getTextMat();
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double hori_scale = state->getHorizScaling();
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new_ctm[0] = (m1[0] * m2[0] + m1[2] * m2[1]) * hori_scale;
|
||||
new_ctm[1] = (m1[1] * m2[0] + m1[3] * m2[1]) * hori_scale;
|
||||
new_ctm[2] = m1[0] * m2[2] + m1[2] * m2[3];
|
||||
new_ctm[3] = m1[1] * m2[2] + m1[3] * m2[3];
|
||||
new_ctm[4] = new_ctm[5] = 0;
|
||||
@ -76,6 +142,8 @@ void HTMLRenderer::check_state_change(GfxState * state)
|
||||
}
|
||||
}
|
||||
|
||||
// draw_ctm, draw_scale
|
||||
// depends: font size & ctm & text_ctm & hori scale
|
||||
if(need_rescale_font)
|
||||
{
|
||||
double new_draw_ctm[6];
|
||||
@ -97,24 +165,58 @@ void HTMLRenderer::check_state_change(GfxState * state)
|
||||
|
||||
if(!(_equal(new_draw_font_size, draw_font_size)))
|
||||
{
|
||||
close_line = true;
|
||||
draw_font_size = new_draw_font_size;
|
||||
cur_fs_id = install_font_size(draw_font_size);
|
||||
close_line = true;
|
||||
}
|
||||
if(!(_tm_equal(new_draw_ctm, draw_ctm)))
|
||||
{
|
||||
close_line = true;
|
||||
memcpy(draw_ctm, new_draw_ctm, sizeof(draw_ctm));
|
||||
cur_tm_id = install_transform_matrix(draw_ctm);
|
||||
close_line = true;
|
||||
}
|
||||
}
|
||||
|
||||
// TODO: track these
|
||||
/*
|
||||
if(!(_equal(s1->getCharSpace(), s2->getCharSpace()) && _equal(s1->getWordSpace(), s2->getWordSpace())
|
||||
&& _equal(s1->getHorizScaling(), s2->getHorizScaling())))
|
||||
return false;
|
||||
*/
|
||||
// letter space
|
||||
// depends: draw_scale
|
||||
if(all_changed || letter_space_changed)
|
||||
{
|
||||
double new_letter_space = state->getCharSpace();
|
||||
if(!_equal(cur_letter_space, new_letter_space))
|
||||
{
|
||||
close_line = true;
|
||||
cur_letter_space = new_letter_space;
|
||||
cur_ls_id = install_letter_space(cur_letter_space * draw_scale);
|
||||
}
|
||||
}
|
||||
|
||||
// word space
|
||||
// depends draw_scale
|
||||
if(all_changed || word_space_changed)
|
||||
{
|
||||
double new_word_space = state->getWordSpace();
|
||||
if(!_equal(cur_word_space, new_word_space))
|
||||
{
|
||||
close_line = true;
|
||||
cur_word_space = new_word_space;
|
||||
cur_ws_id = install_word_space(cur_word_space * draw_scale);
|
||||
}
|
||||
}
|
||||
|
||||
// TODO, we may use nested span if only color is changed
|
||||
|
||||
// color
|
||||
if(all_changed || color_changed)
|
||||
{
|
||||
GfxRGB new_color;
|
||||
state->getFillRGB(&new_color);
|
||||
if(!((new_color.r == cur_color.r) && (new_color.g == cur_color.g) && (new_color.b == cur_color.b)))
|
||||
{
|
||||
close_line = true;
|
||||
cur_color = new_color;
|
||||
cur_color_id = install_color(&new_color);
|
||||
}
|
||||
}
|
||||
|
||||
reset_state_track();
|
||||
|
||||
@ -124,10 +226,18 @@ void HTMLRenderer::check_state_change(GfxState * state)
|
||||
void HTMLRenderer::reset_state_track()
|
||||
{
|
||||
all_changed = false;
|
||||
|
||||
rise_changed = false;
|
||||
text_pos_changed = false;
|
||||
|
||||
font_changed = false;
|
||||
ctm_changed = false;
|
||||
text_mat_changed = false;
|
||||
font_changed = false;
|
||||
hori_scale_changed = false;
|
||||
|
||||
letter_space_changed = false;
|
||||
word_space_changed = false;
|
||||
|
||||
color_changed = false;
|
||||
}
|
||||
void HTMLRenderer::close_cur_line()
|
||||
@ -137,43 +247,8 @@ void HTMLRenderer::close_cur_line()
|
||||
html_fout << "</div>" << endl;
|
||||
line_opened = false;
|
||||
}
|
||||
|
||||
draw_ty = cur_ty + cur_rise;
|
||||
draw_tx = cur_tx;
|
||||
}
|
||||
|
||||
void HTMLRenderer::updateAll(GfxState * state)
|
||||
{
|
||||
all_changed = true;
|
||||
updateTextPos(state);
|
||||
}
|
||||
|
||||
void HTMLRenderer::updateFont(GfxState * state)
|
||||
{
|
||||
font_changed = true;
|
||||
}
|
||||
|
||||
void HTMLRenderer::updateTextMat(GfxState * state)
|
||||
{
|
||||
text_mat_changed = true;
|
||||
}
|
||||
|
||||
void HTMLRenderer::updateCTM(GfxState * state, double m11, double m12, double m21, double m22, double m31, double m32)
|
||||
{
|
||||
ctm_changed = true;
|
||||
}
|
||||
|
||||
void HTMLRenderer::updateTextPos(GfxState * state)
|
||||
{
|
||||
text_pos_changed = true;
|
||||
cur_tx = state->getLineX();
|
||||
cur_ty = state->getLineY();
|
||||
}
|
||||
|
||||
void HTMLRenderer::updateTextShift(GfxState * state, double shift)
|
||||
{
|
||||
text_pos_changed = true;
|
||||
cur_tx -= shift * 0.001 * state->getFontSize() * state->getHorizScaling();
|
||||
}
|
||||
|
||||
void HTMLRenderer::updateFillColor(GfxState * state)
|
||||
{
|
||||
color_changed = true;
|
||||
}
|
||||
|
||||
@ -166,7 +166,7 @@ void HTMLRenderer::drawString(GfxState * state, GooString * s)
|
||||
{
|
||||
double w;
|
||||
auto wid = install_whitespace(target, w);
|
||||
html_fout << format("<span class=\"w w%|1$x|\"> </span>") % wid;
|
||||
html_fout << format("<span class=\"_ _%|1$x|\"> </span>") % wid;
|
||||
draw_tx += w / draw_scale;
|
||||
}
|
||||
}
|
||||
@ -188,6 +188,13 @@ void HTMLRenderer::drawString(GfxState * state, GooString * s)
|
||||
// "t0" is the id_matrix
|
||||
if(cur_tm_id != 0)
|
||||
html_fout << format(" t%|1$x|") % cur_tm_id;
|
||||
|
||||
if(cur_ls_id != 0)
|
||||
html_fout << format(" l%|1$x|") % cur_ls_id;
|
||||
|
||||
if(cur_ws_id != 0)
|
||||
html_fout << format(" w%|1$x|") % cur_ws_id;
|
||||
|
||||
|
||||
{
|
||||
double x,y; // in user space
|
||||
@ -199,16 +206,8 @@ void HTMLRenderer::drawString(GfxState * state, GooString * s)
|
||||
<< "left:" << x << "px;"
|
||||
;
|
||||
}
|
||||
|
||||
// TODO: tracking
|
||||
// letter & word spacing
|
||||
if(_is_positive(state->getCharSpace()))
|
||||
html_fout << "letter-spacing:" << state->getCharSpace() << "px;";
|
||||
if(_is_positive(state->getWordSpace()))
|
||||
html_fout << "word-spacing:" << state->getWordSpace() << "px;";
|
||||
|
||||
//debug
|
||||
//real pos & hori_scale
|
||||
if(0)
|
||||
{
|
||||
#if 0
|
||||
@ -223,11 +222,8 @@ void HTMLRenderer::drawString(GfxState * state, GooString * s)
|
||||
html_fout << "\">";
|
||||
|
||||
line_opened = true;
|
||||
|
||||
draw_tx = cur_tx;
|
||||
}
|
||||
|
||||
|
||||
// Now ready to output
|
||||
// get the unicodes
|
||||
char *p = s->getCString();
|
||||
|
||||
@ -122,13 +122,8 @@ class base64stream
|
||||
{
|
||||
public:
|
||||
|
||||
base64stream(istream & in)
|
||||
: in(&in)
|
||||
{ }
|
||||
|
||||
base64stream(istream && in)
|
||||
: in(&in)
|
||||
{ }
|
||||
base64stream(istream & in) : in(&in) { }
|
||||
base64stream(istream && in) : in(&in) { }
|
||||
|
||||
ostream & dumpto(ostream & out)
|
||||
{
|
||||
|
||||
Loading…
Reference in New Issue
Block a user