lib/pdf/InfoOutputDev.h

   1 /* InfoOutputDev.h
   2    A special output device which collects information about a PDF file,
   3    like fonts, Type3 glyphs and so on.
   4
   5    This file is part of swftools.
   6
   7    Swftools is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    Swftools is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with swftools; if not, write to the Free Software
  19    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
  20
  21 #ifndef __infooutputdev_h__
  22 #define __infooutputdev_h__
  23
  24 #include "popplercompat.h"
  25 #include "GfxFont.h"
  26 #include "OutputDev.h"
  27 #include "SplashOutputDev.h"
  28 #include "Page.h"
  29
  30 #ifdef HAVE_POPPLER
  31   #include <splash/SplashTypes.h>
  32   #include <splash/SplashPath.h>
  33   #include <splash/SplashFont.h>
  34   #include <splash/SplashFontFile.h>
  35 #else
  36   #include "xpdf/config.h"
  37   #include "SplashTypes.h"
  38   #include "SplashPath.h"
  39   #include "SplashFont.h"
  40   #include "SplashFontFile.h"
  41 #endif
  42
  43 #ifdef HAVE_POPPLER
  44 #include <goo/GooHash.h>
  45 #else
  46 #include "GHash.h"
  47 #endif
  48 #include "../gfxdevice.h"
  49 #include "../gfxtools.h"
  50 #include "../gfxfont.h"
  51 #include "../q.h"
  52
  53 #define INTERNAL_FONT_SIZE 1024.0
  54 #define GLYPH_IS_SPACE(g) ((!(g)->line || ((g)->line->type==gfx_moveTo && !(g)->line->next)) && (g)->advance)
  55
  56 struct GlyphInfo
  57 {
  58     SplashPath*path;
  59     int unicode;
  60     int glyphid;
  61     double advance;
  62     double x1,y1,x2,y2;
  63
  64     double advance_max;
  65 };
  66
  67 typedef struct _fontclass {
  68     float m00,m01,m10,m11;
  69     char*id;
  70     unsigned char alpha;
  71 } fontclass_t;
  72
  73 class FontInfo
  74 {
  75     gfxfont_t*gfxfont;
  76
  77     char*id;
  78     double scale;
  79
  80     gfxfont_t* createGfxFont();
  81 public:
  82     fontclass_t*fontclass;
  83     FontInfo(fontclass_t*fontclass);
  84     ~FontInfo();
  85
  86     gfxmatrix_t get_gfxmatrix(GfxState*state);
  87     gfxfont_t* getGfxFont();
  88
  89     char usesSpaces();
  90
  91     double lastx,lasty;
  92     int lastchar;
  93     double lastadvance;
  94
  95     double ascender,descender;
  96
  97     void grow(int size);
  98     void resetPositioning();
  99
 100     GfxFont*font;
 101     double max_size;
 102     int num_glyphs;
 103     GlyphInfo**glyphs;
 104
 105     char seen;
 106     int space_char;
 107     float average_advance;
 108
 109     int num_chars;
 110     int num_spaces;
 111 };
 112
 113 extern char*getFontID(GfxFont*font);
 114 extern gfxmatrix_t gfxmatrix_from_state(GfxState*state);
 115
 116 class InfoOutputDev: public OutputDev
 117 {
 118     GlyphInfo* currentglyph;
 119     SplashOutputDev*splash;
 120     char previous_was_char;
 121     Page *page;
 122
 123     dict_t*fontcache;
 124     FontInfo*last_font;
 125     FontInfo*current_type3_font;
 126     SplashFont*current_splash_font;
 127
 128     public:
 129     int x1,y1,x2,y2;
 130     int num_links;
 131     int num_ppm_images;
 132     int num_jpeg_images;
 133     int num_fonts;
 134     int num_polygons;
 135     int num_chars;
 136     int num_layers;
 137     int num_text_breaks;
 138     double average_char_size;
 139
 140     void dumpfonts(gfxdevice_t*dev);
 141     FontInfo* getFontInfo(GfxState*state);
 142
 143     InfoOutputDev(XRef*xref);
 144     virtual ~InfoOutputDev();
 145     virtual GBool useTilingPatternFill();
 146     virtual GBool upsideDown();
 147     virtual GBool needNonText();
 148     virtual GBool useDrawChar();
 149     virtual GBool interpretType3Chars();
 150     virtual GBool checkPageSlice(Page *page, double hDPI, double vDPI,
 151                                int rotate, GBool useMediaBox, GBool crop,
 152                                int sliceX, int sliceY, int sliceW, int sliceH,
 153                                GBool printing, Catalog *catalog,
 154                                GBool (*abortCheckCbk)(void *data) = NULL,
 155                                void *abortCheckCbkData = NULL);
 156     virtual void startPage(int pageNum, GfxState *state);
 157     virtual void endPage();
 158     virtual void drawLink(Link *link, Catalog *catalog);
 159     virtual void updateFont(GfxState *state);
 160
 161     virtual void saveState(GfxState *state);
 162     virtual void restoreState(GfxState *state);
 163
 164     virtual GBool beginType3Char(GfxState *state, double x, double y, double dx, double dy, CharCode code, Unicode *u, int uLen);
 165     virtual void type3D0(GfxState *state, double wx, double wy);
 166     virtual void type3D1(GfxState *state, double wx, double wy, double llx, double lly, double urx, double ury);
 167     virtual void endType3Char(GfxState *state);
 168
 169     virtual void fill(GfxState *state);
 170     virtual void eoFill(GfxState *state);
 171
 172     virtual void drawChar(GfxState *state, double x, double y,
 173                           double dx, double dy,
 174                           double originX, double originY,
 175                           CharCode code, int nBytes, Unicode *u, int uLen);
 176
 177     virtual void updateTextMat(GfxState*state);
 178
 179     virtual void drawImageMask(GfxState *state, Object *ref, Stream *str,
 180                                int width, int height, GBool invert,
 181                                POPPLER_INTERPOLATE
 182                                GBool inlineImg);
 183     virtual void drawImage(GfxState *state, Object *ref, Stream *str,
 184                            int width, int height, GfxImageColorMap *colorMap,
 185                            POPPLER_INTERPOLATE
 186                            int *maskColors, GBool inlineImg);
 187     virtual void drawMaskedImage(GfxState *state, Object *ref, Stream *str,
 188                                   int width, int height,
 189                                   GfxImageColorMap *colorMap,
 190                                   POPPLER_INTERPOLATE
 191                                   Stream *maskStr,
 192                                   int maskWidth, int maskHeight,
 193                                   GBool maskInvert
 194                                   POPPLER_MASK_INTERPOLATE);
 195     virtual void drawSoftMaskedImage(GfxState *state, Object *ref, Stream *str,
 196                                       int width, int height,
 197                                       GfxImageColorMap *colorMap,
 198                                       POPPLER_INTERPOLATE
 199                                       Stream *maskStr,
 200                                       int maskWidth, int maskHeight,
 201                                       GfxImageColorMap *maskColorMap
 202                                       POPPLER_MASK_INTERPOLATE);
 203     private:
 204
 205     FontInfo* getOrCreateFontInfo(GfxState*state);
 206 };
 207
 208 #endif //__infooutputdev_h__