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