lib/pdf/InfoOutputDev.cc

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