lib/pdf/InfoOutputDev.cc

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