lib/pdf/InfoOutputDev.cc

   1 #include "config.h"
   2 #include "Object.h"
   3 #include "InfoOutputDev.h"
   4 #include "SplashOutputDev.h"
   5 #ifdef HAVE_POPPLER
   6 #include <splash/SplashTypes.h>
   7 #include <splash/SplashPath.h>
   8 #include <splash/SplashFont.h>
   9 #include <splash/SplashFontFile.h>
  10 #else
  11 #include "SplashTypes.h"
  12 #include "SplashPath.h"
  13 #include "SplashFont.h"
  14 #include "SplashFontFile.h"
  15 #endif
  16 #include "GfxState.h"
  17 #include "../log.h"
  18 #include <math.h>
  19
  20 InfoOutputDev::InfoOutputDev(XRef*xref)
  21 {
  22     num_links = 0;
  23     num_images = 0;
  24     num_fonts = 0;
  25     num_polygons= 0;
  26     currentfont = 0;
  27     currentglyph = 0;
  28     id2font = new GHash(1);
  29     SplashColor white = {255,255,255};
  30     splash = new SplashOutputDev(splashModeRGB8,320,0,white,0,0);
  31     splash->startDoc(xref);
  32 }
  33 InfoOutputDev::~InfoOutputDev()
  34 {
  35     GHashIter*i;
  36     id2font->startIter(&i);
  37     GString*key;
  38     FontInfo*fontinfo;
  39     while(id2font->getNext(&i, &key, (void**)&fontinfo)) {
  40         delete fontinfo;
  41     }
  42     id2font->killIter(&i);
  43
  44     delete id2font;id2font=0;
  45     delete splash;splash=0;
  46 }
  47 void FontInfo::grow(int size)
  48 {
  49     if(size >= this->num_glyphs) {
  50         this->glyphs = (GlyphInfo**)realloc(this->glyphs, sizeof(GlyphInfo*)*(size));
  51         memset(&this->glyphs[this->num_glyphs], 0, sizeof(SplashPath*)*((size)-this->num_glyphs));
  52         this->num_glyphs = size;
  53     }
  54 }
  55 FontInfo::FontInfo()
  56 {
  57     this->charid2glyph = 0;
  58     this->seen = 0;
  59     this->num_glyphs = 0;
  60     this->glyphs = 0;
  61     this->splash_font = 0;
  62 }
  63 FontInfo::~FontInfo()
  64 {
  65     this->font = 0;
  66     if(this->charid2glyph) {
  67         free(this->charid2glyph);
  68         this->charid2glyph = 0;
  69     }
  70     int t;
  71     for(t=0;t<num_glyphs;t++) {
  72         if(glyphs[t]) {
  73             delete glyphs[t]->path;glyphs[t]->path = 0;
  74             delete glyphs[t];
  75             glyphs[t]=0;
  76         }
  77     }
  78     free(glyphs);glyphs=0;
  79 }
  80 GBool InfoOutputDev::upsideDown() {return gTrue;}
  81 GBool InfoOutputDev::useDrawChar() {return gTrue;}
  82 GBool InfoOutputDev::interpretType3Chars() {return gTrue;}
  83 GBool InfoOutputDev::useTilingPatternFill() {return gTrue;}
  84
  85 void InfoOutputDev::startPage(int pageNum, GfxState *state, double crop_x1, double crop_y1, double crop_x2, double crop_y2)
  86 {
  87     double x1,y1,x2,y2;
  88     state->transform(crop_x1,crop_y1,&x1,&y1);
  89     state->transform(crop_x2,crop_y2,&x2,&y2);
  90     if(x2<x1) {double x3=x1;x1=x2;x2=x3;}
  91     if(y2<y1) {double y3=y1;y1=y2;y2=y3;}
  92     this->x1 = (int)x1;
  93     this->y1 = (int)y1;
  94     this->x2 = (int)x2;
  95     this->y2 = (int)y2;
  96     msg("<verbose> Generating info structure for page %d", pageNum);
  97 }
  98 void InfoOutputDev::endPage()
  99 {
 100 }
 101 void InfoOutputDev::drawLink(Link *link, Catalog *catalog)
 102 {
 103     num_links++;
 104 }
 105 double InfoOutputDev::getMaximumFontSize(char*id)
 106 {
 107     FontInfo*info = (FontInfo*)id2font->lookup(id);
 108     if(!info) {
 109         msg("<error> Unknown font id: %s", id);
 110         return 0.0;
 111     }
 112     return info->max_size;
 113 }
 114
 115 char*getFontID(GfxFont*font)
 116 {
 117     Ref*ref = font->getID();
 118     GString*gstr = font->getName();
 119     char* fname = gstr==0?0:gstr->getCString();
 120     char buf[128];
 121     if(fname==0) {
 122         if(font->getType() == fontType3) {
 123             sprintf(buf, "t3font-%d-%d", ref->num, ref->gen);
 124         } else {
 125             sprintf(buf, "font-%d-%d", ref->num, ref->gen);
 126         }
 127     } else {
 128         sprintf(buf, "%s-%d-%d", fname, ref->num, ref->gen);
 129     }
 130     return strdup(buf);
 131 }
 132
 133 void InfoOutputDev::updateFont(GfxState *state)
 134 {
 135     GfxFont*font = state->getFont();
 136     if(!font) {
 137         currentfont = 0;
 138         return;
 139     }
 140     if(font->getType() == fontType3) {
 141         currentfont = 0;
 142         return;
 143     }
 144     char*id = getFontID(font);
 145
 146     if(currentfont)
 147         currentfont->splash_font = 0;
 148
 149     currentfont = (FontInfo*)id2font->lookup(id);
 150     if(!currentfont) {
 151         currentfont = new FontInfo;
 152         currentfont->font = font;
 153         currentfont->max_size = 0;
 154         GString* idStr = new GString(id);
 155         id2font->add(idStr, (void*)currentfont);
 156         num_fonts++;
 157     }
 158
 159     state->setCTM(1.0,0,0,1.0,0,0);
 160     splash->updateCTM(state, 0,0,0,0,0,0);
 161     state->setTextMat(1.0,0,0,1.0,0,0);
 162     state->setFont(font, 1024.0);
 163     splash->doUpdateFont(state);
 164     currentfont->splash_font = splash->getCurrentFont();
 165     free(id);
 166 }
 167
 168 void InfoOutputDev::fill(GfxState *state)
 169 {
 170     num_polygons++;
 171 }
 172
 173 void InfoOutputDev::eoFill(GfxState *state)
 174 {
 175     num_polygons++;
 176 }
 177
 178 FontInfo* InfoOutputDev::getFont(char*id)
 179 {
 180     return (FontInfo*)id2font->lookup(id);
 181 }
 182
 183 void InfoOutputDev::drawChar(GfxState *state, double x, double y,
 184                       double dx, double dy,
 185                       double originX, double originY,
 186                       CharCode code, int nBytes, Unicode *u, int uLen)
 187 {
 188     double m11,m21,m12,m22;
 189     state->getFontTransMat(&m11, &m12, &m21, &m22);
 190     m11 *= state->getHorizScaling();
 191     m21 *= state->getHorizScaling();
 192     double lenx = sqrt(m11*m11 + m12*m12);
 193     double leny = sqrt(m21*m21 + m22*m22);
 194     double len = lenx>leny?lenx:leny;
 195     if(!currentfont || !currentfont->splash_font) {
 196         return; //error
 197     }
 198     if(currentfont && currentfont->max_size < len) {
 199         currentfont->max_size = len;
 200     }
 201     currentfont->grow(code+1);
 202     GlyphInfo*g = currentfont->glyphs[code];
 203     if(!g) {
 204         g = currentfont->glyphs[code] = new GlyphInfo();
 205         g->path = currentfont->splash_font->getGlyphPath(code);
 206         g->unicode = 0;
 207     }
 208     if(uLen && (u[0]>=32 && u[0]<g->unicode || !g->unicode)) {
 209         g->unicode = u[0];
 210     }
 211
 212 }
 213
 214 GBool InfoOutputDev::beginType3Char(GfxState *state, double x, double y, double dx, double dy, CharCode code, Unicode *u, int uLen)
 215 {
 216     GfxFont*font = state->getFont();
 217     if(!font)
 218         return gTrue;
 219     if(font->getType() != fontType3)
 220         return gTrue;
 221
 222     char*id = getFontID(font);
 223     currentfont = (FontInfo*)id2font->lookup(id);
 224     if(!currentfont) {
 225         currentfont = new FontInfo;
 226         currentfont->font = font;
 227         GString* idStr = new GString(id);
 228         id2font->add(idStr, (void*)currentfont);
 229         num_fonts++;
 230     }
 231     currentfont = currentfont;
 232     free(id);
 233
 234     currentfont->grow(code+1);
 235     if(!currentfont->glyphs[code]) {
 236         currentglyph = currentfont->glyphs[code] = new GlyphInfo();
 237         currentglyph->unicode = uLen?u[0]:0;
 238         currentglyph->path = new SplashPath();
 239         currentglyph->x1=0;
 240         currentglyph->y1=0;
 241         currentglyph->x2=dx;
 242         currentglyph->y2=dy;
 243         return gFalse;
 244     } else {
 245         return gTrue;
 246     }
 247 }
 248
 249 void InfoOutputDev::type3D0(GfxState *state, double wx, double wy)
 250 {
 251     currentglyph->x1=0;
 252     currentglyph->y1=0;
 253     currentglyph->x2=wx;
 254     currentglyph->y2=wy;
 255 }
 256
 257 void InfoOutputDev::type3D1(GfxState *state, double wx, double wy, double llx, double lly, double urx, double ury)
 258 {
 259     currentglyph->x1=llx;
 260     currentglyph->y1=lly;
 261     currentglyph->x2=urx;
 262     currentglyph->y2=ury;
 263 }
 264
 265 void InfoOutputDev::endType3Char(GfxState *state)
 266 {
 267     double x1 = currentglyph->x1;
 268     double y1 = currentglyph->y1;
 269     double x2 = currentglyph->x2;
 270     double y2 = currentglyph->y2;
 271     currentglyph->path->moveTo(x1,y1);
 272     currentglyph->path->lineTo(x2,y1);
 273     currentglyph->path->lineTo(x2,y2);
 274     currentglyph->path->lineTo(x1,y2);
 275     currentglyph->path->close();
 276 }
 277
 278 void InfoOutputDev::drawImageMask(GfxState *state, Object *ref, Stream *str,
 279                            int width, int height, GBool invert,
 280                            GBool inlineImg)
 281 {
 282     num_images++;
 283     OutputDev::drawImageMask(state,ref,str,width,height,invert,inlineImg);
 284 }
 285 void InfoOutputDev::drawImage(GfxState *state, Object *ref, Stream *str,
 286                        int width, int height, GfxImageColorMap *colorMap,
 287                        int *maskColors, GBool inlineImg)
 288 {
 289     num_images++;
 290     OutputDev::drawImage(state,ref,str,width,height,colorMap,maskColors,inlineImg);
 291 }
 292 void InfoOutputDev::drawMaskedImage(GfxState *state, Object *ref, Stream *str,
 293                                 int width, int height,
 294                                 GfxImageColorMap *colorMap,
 295                                 Stream *maskStr,
 296                                 int maskWidth, int maskHeight,
 297                                 GBool maskInvert)
 298 {
 299     OutputDev::drawMaskedImage(state,ref,str,width,height,colorMap,maskStr,maskWidth,maskHeight,maskInvert);
 300 }
 301
 302 void InfoOutputDev::drawSoftMaskedImage(GfxState *state, Object *ref, Stream *str,
 303                                     int width, int height,
 304                                     GfxImageColorMap *colorMap,
 305                                     Stream *maskStr,
 306                                     int maskWidth, int maskHeight,
 307                                     GfxImageColorMap *maskColorMap)
 308 {
 309     OutputDev::drawSoftMaskedImage(state,ref,str,width,height,colorMap,maskStr,maskWidth,maskHeight,maskColorMap);
 310 }