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https://github.com/pdf2htmlEX/pdf2htmlEX.git
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..
This commit is contained in:
Lu Wang
parent
820f06d940
commit
225aa23dca
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@ -43,317 +43,314 @@ public:
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class HTMLRenderer : public OutputDev
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{
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public:
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HTMLRenderer(const Param * param);
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virtual ~HTMLRenderer();
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public:
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HTMLRenderer(const Param * param);
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virtual ~HTMLRenderer();
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void process(PDFDoc * doc);
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void process(PDFDoc * doc);
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////////////////////////////////////////////////////
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// OutputDev interface
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////////////////////////////////////////////////////
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// Does this device use upside-down coordinates?
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// (Upside-down means (0,0) is the top left corner of the page.)
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virtual GBool upsideDown() { return gFalse; }
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////////////////////////////////////////////////////
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// OutputDev interface
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////////////////////////////////////////////////////
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// Does this device use upside-down coordinates?
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// (Upside-down means (0,0) is the top left corner of the page.)
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virtual GBool upsideDown() { return gFalse; }
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// Does this device use drawChar() or drawString()?
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virtual GBool useDrawChar() { return gFalse; }
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// Does this device use drawChar() or drawString()?
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virtual GBool useDrawChar() { return gFalse; }
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// Does this device use functionShadedFill(), axialShadedFill(), and
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// radialShadedFill()? If this returns false, these shaded fills
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// will be reduced to a series of other drawing operations.
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virtual GBool useShadedFills(int type) { return (type == 2) ? gTrue: gFalse; }
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// Does this device use functionShadedFill(), axialShadedFill(), and
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// radialShadedFill()? If this returns false, these shaded fills
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// will be reduced to a series of other drawing operations.
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virtual GBool useShadedFills(int type) { return (type == 2) ? gTrue: gFalse; }
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// Does this device use beginType3Char/endType3Char? Otherwise,
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// text in Type 3 fonts will be drawn with drawChar/drawString.
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virtual GBool interpretType3Chars() { return gFalse; }
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// Does this device use beginType3Char/endType3Char? Otherwise,
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// text in Type 3 fonts will be drawn with drawChar/drawString.
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virtual GBool interpretType3Chars() { return gFalse; }
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// Does this device need non-text content?
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virtual GBool needNonText() { return (param->process_nontext) ? gTrue: gFalse; }
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// Does this device need non-text content?
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virtual GBool needNonText() { return (param->process_nontext) ? gTrue: gFalse; }
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virtual void setDefaultCTM(double *ctm);
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virtual void setDefaultCTM(double *ctm);
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// Start a page.
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// UGLY: These 2 versions are for different versions of poppler
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virtual void startPage(int pageNum, GfxState *state);
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virtual void startPage(int pageNum, GfxState *state, XRef * xref);
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// Start a page.
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// UGLY: These 2 versions are for different versions of poppler
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virtual void startPage(int pageNum, GfxState *state);
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virtual void startPage(int pageNum, GfxState *state, XRef * xref);
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// End a page.
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virtual void endPage();
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// End a page.
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virtual void endPage();
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/*
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* To optimize false alarms
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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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/*
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* To optimize false alarms
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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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/*
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* Ugly implementation of save/restore
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*/
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virtual void saveState(GfxState * state) { updateAll(state); }
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virtual void restoreState(GfxState * state) { updateAll(state); }
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/*
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* Ugly implementation of save/restore
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*/
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virtual void saveState(GfxState * state) { updateAll(state); }
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virtual void restoreState(GfxState * state) { updateAll(state); }
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virtual void updateAll(GfxState * state);
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virtual void updateAll(GfxState * state);
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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 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 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 updateCharSpace(GfxState * state);
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virtual void updateWordSpace(GfxState * state);
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virtual void updateRender(GfxState * state);
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virtual void updateRender(GfxState * state);
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virtual void updateFillColorSpace(GfxState * state);
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virtual void updateStrokeColorSpace(GfxState * state);
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virtual void updateFillColor(GfxState * state);
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virtual void updateStrokeColor(GfxState * state);
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virtual void updateFillColorSpace(GfxState * state);
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virtual void updateStrokeColorSpace(GfxState * state);
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virtual void updateFillColor(GfxState * state);
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virtual void updateStrokeColor(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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/*
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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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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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virtual void stroke(GfxState *state) { css_do_path(state, false); }
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virtual void fill(GfxState *state) { css_do_path(state, true); }
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virtual GBool axialShadedFill(GfxState *state, GfxAxialShading *shading, double tMin, double tMax);
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virtual void stroke(GfxState *state) { css_do_path(state, false); }
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virtual void fill(GfxState *state) { css_do_path(state, true); }
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virtual GBool axialShadedFill(GfxState *state, GfxAxialShading *shading, double tMin, double tMax);
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virtual void processLink(AnnotLink * al);
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virtual void processLink(AnnotLink * al);
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/* capacity test */
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bool can_stroke(GfxState *state) { return css_do_path(state, false, true); }
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bool can_fill(GfxState *state) { return css_do_path(state, true, true); }
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/* capacity test */
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bool can_stroke(GfxState *state) { return css_do_path(state, false, true); }
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bool can_fill(GfxState *state) { return css_do_path(state, true, true); }
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protected:
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////////////////////////////////////////////////////
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// misc
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////////////////////////////////////////////////////
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void pre_process(PDFDoc * doc);
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void post_process();
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protected:
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////////////////////////////////////////////////////
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// misc
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////////////////////////////////////////////////////
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void pre_process(PDFDoc * doc);
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void post_process();
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void process_outline();
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void process_outline_items(GooList * items);
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void process_outline();
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void process_outline_items(GooList * items);
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void set_stream_flags (std::ostream & out);
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void set_stream_flags (std::ostream & out);
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std::string dump_embedded_font (GfxFont * font, long long fn_id);
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void embed_font(const std::string & filepath, GfxFont * font, FontInfo & info, bool get_metric_only = false);
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std::string dump_embedded_font (GfxFont * font, long long fn_id);
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void embed_font(const std::string & filepath, GfxFont * font, FontInfo & info, bool get_metric_only = false);
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// convert a LinkAction to a string that our Javascript code can understand
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std::string get_linkaction_str(LinkAction *, std::string & detail);
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// convert a LinkAction to a string that our Javascript code can understand
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std::string get_linkaction_str(LinkAction *, std::string & detail);
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////////////////////////////////////////////////////
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// manage styles
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////////////////////////////////////////////////////
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const FontInfo * install_font(GfxFont * font);
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void install_embedded_font(GfxFont * font, FontInfo & info);
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void install_base_font(GfxFont * font, GfxFontLoc * font_loc, FontInfo & info);
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void install_external_font (GfxFont * font, FontInfo & info);
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////////////////////////////////////////////////////
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// manage styles
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////////////////////////////////////////////////////
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const FontInfo * install_font(GfxFont * font);
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void install_embedded_font(GfxFont * font, FontInfo & info);
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void install_base_font(GfxFont * font, GfxFontLoc * font_loc, FontInfo & info);
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void install_external_font (GfxFont * font, FontInfo & info);
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long long install_fill_color(const GfxRGB * rgb);
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long long install_stroke_color(const GfxRGB * rgb);
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long long install_fill_color(const GfxRGB * rgb);
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long long install_stroke_color(const GfxRGB * rgb);
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////////////////////////////////////////////////////
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// export css styles
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////////////////////////////////////////////////////
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/*
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* remote font: to be retrieved from the web server
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* local font: to be substituted with a local (client side) font
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*/
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void export_remote_font(const FontInfo & info, const std::string & suffix, GfxFont * font);
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void export_remote_default_font(long long fn_id);
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void export_local_font(const FontInfo & info, GfxFont * font, const std::string & original_font_name, const std::string & cssfont);
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////////////////////////////////////////////////////
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// export css styles
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////////////////////////////////////////////////////
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/*
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* remote font: to be retrieved from the web server
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* local font: to be substituted with a local (client side) font
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*/
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void export_remote_font(const FontInfo & info, const std::string & suffix, GfxFont * font);
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void export_remote_default_font(long long fn_id);
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void export_local_font(const FontInfo & info, GfxFont * font, const std::string & original_font_name, const std::string & cssfont);
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void export_fill_color(long long color_id, const GfxRGB * rgb);
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void export_stroke_color(long long color_id, const GfxRGB * rgb);
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void export_fill_color(long long color_id, const GfxRGB * rgb);
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void export_stroke_color(long long color_id, const GfxRGB * rgb);
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// depending on single-html, to embed the content or add a link to it
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// "type": specify the file type, usually it's the suffix, in which case this parameter could be ""
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// "copy": indicates whether to copy the file into dest_dir, if not embedded
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void embed_file(std::ostream & out, const std::string & path, const std::string & type, bool copy);
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// depending on single-html, to embed the content or add a link to it
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// "type": specify the file type, usually it's the suffix, in which case this parameter could be ""
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// "copy": indicates whether to copy the file into dest_dir, if not embedded
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void embed_file(std::ostream & out, const std::string & path, const std::string & type, bool copy);
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////////////////////////////////////////////////////
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// state tracking
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////////////////////////////////////////////////////
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// reset all states
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void reset_state();
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// reset all ***_changed flags
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void reset_state_change();
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// check updated states, and determine new_line_stauts
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// make sure this function can be called several times consecutively without problem
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void check_state_change(GfxState * state);
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// prepare the line context, (close old tags, open new tags)
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// make sure the current HTML style consistent with PDF
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void prepare_text_line(GfxState * state);
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void close_text_line();
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////////////////////////////////////////////////////
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// state tracking
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////////////////////////////////////////////////////
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// reset all states
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void reset_state();
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// reset all ***_changed flags
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void reset_state_change();
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// check updated states, and determine new_line_stauts
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// make sure this function can be called several times consecutively without problem
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void check_state_change(GfxState * state);
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// prepare the line context, (close old tags, open new tags)
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// make sure the current HTML style consistent with PDF
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void prepare_text_line(GfxState * state);
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void close_text_line();
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////////////////////////////////////////////////////
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// CSS drawing
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////////////////////////////////////////////////////
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/*
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* test_only is for capacity check
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*/
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bool css_do_path(GfxState *state, bool fill, bool test_only = false);
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/*
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* coordinates are to transformed by state->getCTM()
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* (x,y) should be the bottom-left corner INCLUDING border
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* w,h should be the metrics WITHOUT border
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*
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* line_color & fill_color may be specified as nullptr to indicate none
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* style_function & style_function_data may be provided to provide more styles
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*/
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void css_draw_rectangle(double x, double y, double w, double h, const double * tm,
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double * line_width_array, int line_width_count,
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const GfxRGB * line_color, const GfxRGB * fill_color,
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void (*style_function)(void *, std::ostream &) = nullptr, void * style_function_data = nullptr );
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////////////////////////////////////////////////////
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// CSS drawing
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////////////////////////////////////////////////////
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/*
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* test_only is for capacity check
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*/
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bool css_do_path(GfxState *state, bool fill, bool test_only = false);
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/*
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* coordinates are to transformed by state->getCTM()
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* (x,y) should be the bottom-left corner INCLUDING border
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* w,h should be the metrics WITHOUT border
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*
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* line_color & fill_color may be specified as nullptr to indicate none
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* style_function & style_function_data may be provided to provide more styles
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*/
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void css_draw_rectangle(double x, double y, double w, double h, const double * tm,
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double * line_width_array, int line_width_count,
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const GfxRGB * line_color, const GfxRGB * fill_color,
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void (*style_function)(void *, std::ostream &) = nullptr, void * style_function_data = nullptr );
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////////////////////////////////////////////////////
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// PDF stuffs
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////////////////////////////////////////////////////
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XRef * xref;
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PDFDoc * cur_doc;
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Catalog * cur_catalog;
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////////////////////////////////////////////////////
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// PDF stuffs
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////////////////////////////////////////////////////
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XRef * xref;
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PDFDoc * cur_doc;
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Catalog * cur_catalog;
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double default_ctm[6];
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double default_ctm[6];
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// page info
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int pageNum;
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double pageWidth ;
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double pageHeight ;
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// page info
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int pageNum;
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double pageWidth ;
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double pageHeight ;
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/*
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* The content of each page is first scaled with factor1 (>=1), then scale back with factor2(<=1)
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*
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* factor1 is use to multiplied with all metrics (height/width/font-size...), in order to improve accuracy
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* factor2 is applied with css transform, and is exposed to Javascript
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*
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* factor1 & factor 2 are determined according to zoom and font-size-multiplier
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*
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*/
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double text_zoom_factor (void) const { return text_scale_factor1 * text_scale_factor2; }
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double text_scale_factor1;
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double text_scale_factor2;
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/*
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* The content of each page is first scaled with factor1 (>=1), then scale back with factor2(<=1)
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*
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* factor1 is use to multiplied with all metrics (height/width/font-size...), in order to improve accuracy
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* factor2 is applied with css transform, and is exposed to Javascript
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*
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* factor1 & factor 2 are determined according to zoom and font-size-multiplier
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*
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*/
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double text_zoom_factor (void) const { return text_scale_factor1 * text_scale_factor2; }
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double text_scale_factor1;
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double text_scale_factor2;
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////////////////////////////////////////////////////
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// states
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////////////////////////////////////////////////////
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bool line_opened;
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enum NewLineState
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{
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NLS_NONE, // stay with the same style
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NLS_SPAN, // open a new <span> if possible, otherwise a new <div>
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NLS_DIV // has to open a new <div>
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} new_line_state;
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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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// 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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////////////////////////////////////////////////////
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// states
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////////////////////////////////////////////////////
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bool line_opened;
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enum NewLineState
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{
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NLS_NONE, // stay with the same style
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NLS_SPAN, // open a new <span> if possible, otherwise a new <div>
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NLS_DIV // has to open a new <div>
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} new_line_state;
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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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// current position
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double cur_tx, cur_ty; // real text position, in text coords
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// font & size
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const FontInfo * cur_font_info;
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bool font_changed;
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// cur_font_size is as in GfxState,
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// font_size_manager saves the final font size used in HTML
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double cur_font_size;
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// cur_font_size and cur_text_tm are unscaled (the same as in PDF)
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double cur_font_size;
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// this is CTM * TextMAT in PDF
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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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double cur_text_tm[6]; // unscaled
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// transform matrix
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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
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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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double cur_text_tm[6]; // unscaled
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bool text_pos_changed;
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bool font_changed;
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bool ctm_changed;
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bool text_mat_changed;
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bool hori_scale_changed;
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bool letter_space_changed;
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bool word_space_changed;
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bool rise_changed;
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// letter spacing
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bool letter_space_changed;
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bool word_space_changed;
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// font & size
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const FontInfo * cur_font_info;
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// fill color
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||||
long long cur_fill_color_id;
|
||||
GfxRGB cur_fill_color;
|
||||
bool cur_has_fill;
|
||||
bool fill_color_changed;
|
||||
// fill color
|
||||
long long cur_fill_color_id;
|
||||
GfxRGB cur_fill_color;
|
||||
bool cur_has_fill;
|
||||
bool fill_color_changed;
|
||||
|
||||
// stroke color
|
||||
long long cur_stroke_color_id;
|
||||
GfxRGB cur_stroke_color;
|
||||
bool cur_has_stroke;
|
||||
bool stroke_color_changed;
|
||||
bool rise_changed;
|
||||
// stroke color
|
||||
long long cur_stroke_color_id;
|
||||
GfxRGB cur_stroke_color;
|
||||
bool cur_has_stroke;
|
||||
bool stroke_color_changed;
|
||||
|
||||
// managers store values actually used in HTML (i.e. scaled)
|
||||
FontSizeManager font_size_manager;
|
||||
LetterSpaceManager letter_space_manager;
|
||||
WordSpaceManager word_space_manager;
|
||||
RiseManager rise_manager;
|
||||
WhitespaceManager whitespace_manager;
|
||||
HeightManager height_manager;
|
||||
LeftManager left_manager;
|
||||
TransformMatrixManager transform_matrix_manager;
|
||||
|
||||
// optimize for web
|
||||
// we try to render the final font size directly
|
||||
// to reduce the effect of ctm as much as possible
|
||||
|
||||
// the actual tm used is `real tm in PDF` scaled by 1/draw_text_scale,
|
||||
// so everything redenered should be multiplied by draw_text_scale
|
||||
double draw_text_scale;
|
||||
// managers store values actually used in HTML (i.e. scaled)
|
||||
FontSizeManager font_size_manager;
|
||||
LetterSpaceManager letter_space_manager;
|
||||
WordSpaceManager word_space_manager;
|
||||
RiseManager rise_manager;
|
||||
WhitespaceManager whitespace_manager;
|
||||
HeightManager height_manager;
|
||||
LeftManager left_manager;
|
||||
TransformMatrixManager transform_matrix_manager;
|
||||
|
||||
// the position of next char, in text coords
|
||||
// this is actual position (in HTML), which might be different from cur_tx/ty (in PDF)
|
||||
// also keep in mind that they are not the final position, as they will be transform by CTM (also true for cur_tx/ty)
|
||||
double draw_tx, draw_ty;
|
||||
// optimize for web
|
||||
// we try to render the final font size directly
|
||||
// to reduce the effect of ctm as much as possible
|
||||
|
||||
// the actual tm used is `real tm in PDF` scaled by 1/draw_text_scale,
|
||||
// so everything redenered should be multiplied by draw_text_scale
|
||||
double draw_text_scale;
|
||||
|
||||
// some metrics have to be determined after all elements in the lines have been seen
|
||||
// see TextLineBuffer.h
|
||||
class TextLineBuffer;
|
||||
friend class TextLineBuffer;
|
||||
TextLineBuffer * text_line_buf;
|
||||
// the position of next char, in text coords
|
||||
// this is actual position (in HTML), which might be different from cur_tx/ty (in PDF)
|
||||
// also keep in mind that they are not the final position, as they will be transform by CTM (also true for cur_tx/ty)
|
||||
double draw_tx, draw_ty;
|
||||
|
||||
// for font reencoding
|
||||
int32_t * cur_mapping;
|
||||
char ** cur_mapping2;
|
||||
int * width_list;
|
||||
// some metrics have to be determined after all elements in the lines have been seen
|
||||
// see TextLineBuffer.h
|
||||
class TextLineBuffer;
|
||||
friend class TextLineBuffer;
|
||||
TextLineBuffer * text_line_buf;
|
||||
|
||||
Preprocessor preprocessor;
|
||||
TmpFiles tmp_files;
|
||||
// for font reencoding
|
||||
int32_t * cur_mapping;
|
||||
char ** cur_mapping2;
|
||||
int * width_list;
|
||||
|
||||
// for string formatting
|
||||
StringFormatter str_fmt;
|
||||
Preprocessor preprocessor;
|
||||
TmpFiles tmp_files;
|
||||
|
||||
////////////////////////////////////////////////////
|
||||
// styles & resources
|
||||
////////////////////////////////////////////////////
|
||||
// for string formatting
|
||||
StringFormatter str_fmt;
|
||||
|
||||
std::unordered_map<long long, FontInfo> font_name_map;
|
||||
std::unordered_map<GfxRGB, long long, GfxRGB_hash, GfxRGB_equal> fill_color_map, stroke_color_map;
|
||||
////////////////////////////////////////////////////
|
||||
// styles & resources
|
||||
////////////////////////////////////////////////////
|
||||
|
||||
const Param * param;
|
||||
std::unordered_map<long long, FontInfo> font_name_map;
|
||||
std::unordered_map<GfxRGB, long long, GfxRGB_hash, GfxRGB_equal> fill_color_map, stroke_color_map;
|
||||
|
||||
struct {
|
||||
std::ofstream fs;
|
||||
std::string path;
|
||||
} f_outline, f_pages, f_css;
|
||||
const Param * param;
|
||||
|
||||
static const std::string MANIFEST_FILENAME;
|
||||
struct {
|
||||
std::ofstream fs;
|
||||
std::string path;
|
||||
} f_outline, f_pages, f_css;
|
||||
|
||||
static const std::string MANIFEST_FILENAME;
|
||||
};
|
||||
|
||||
} //namespace pdf2htmlEX
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user