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