lib/pdf/InfoOutputDev.cc

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