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 FontInfo::FontInfo()
  34 {
  35     this->charid2glyph = 0;
  36 }
  37 FontInfo::~FontInfo()
  38 {
  39     this->font = 0;
  40     if(this->charid2glyph) {
  41         free(this->charid2glyph);
  42         this->charid2glyph = 0;
  43     }
  44     int t;
  45     for(t=0;t<num_glyphs;t++) {
  46         if(glyphs[t]) {
  47             delete glyphs[t]->path;glyphs[t]->path = 0;
  48             delete glyphs[t];
  49             glyphs[t]=0;
  50         }
  51     }
  52 }
  53 GBool InfoOutputDev::upsideDown() {return gTrue;}
  54 GBool InfoOutputDev::useDrawChar() {return gTrue;}
  55 GBool InfoOutputDev::interpretType3Chars() {return gTrue;}
  56 GBool InfoOutputDev::useTilingPatternFill() {return gTrue;}
  57 void InfoOutputDev::startPage(int pageNum, GfxState *state, double crop_x1, double crop_y1, double crop_x2, double crop_y2)
  58 {
  59     double x1,y1,x2,y2;
  60     state->transform(crop_x1,crop_y1,&x1,&y1);
  61     state->transform(crop_x2,crop_y2,&x2,&y2);
  62     if(x2<x1) {double x3=x1;x1=x2;x2=x3;}
  63     if(y2<y1) {double y3=y1;y1=y2;y2=y3;}
  64     this->x1 = (int)x1;
  65     this->y1 = (int)y1;
  66     this->x2 = (int)x2;
  67     this->y2 = (int)y2;
  68     msg("<verbose> Generating info structure for page %d", pageNum);
  69 }
  70 void InfoOutputDev::drawLink(Link *link, Catalog *catalog)
  71 {
  72     num_links++;
  73 }
  74 double InfoOutputDev::getMaximumFontSize(char*id)
  75 {
  76     FontInfo*info = (FontInfo*)id2font->lookup(id);
  77     if(!info) {
  78         msg("<error> Unknown font id: %s", id);
  79         return 0.0;
  80     }
  81     return info->max_size;
  82 }
  83
  84 char*getFontID(GfxFont*font)
  85 {
  86     Ref*ref = font->getID();
  87     GString*gstr = font->getName();
  88     char* fname = gstr==0?0:gstr->getCString();
  89     char buf[128];
  90     if(fname==0) {
  91         sprintf(buf, "font-%d-%d", ref->num, ref->gen);
  92     } else {
  93         sprintf(buf, "%s-%d-%d", fname, ref->num, ref->gen);
  94     }
  95     return strdup(buf);
  96 }
  97
  98 void InfoOutputDev::updateFont(GfxState *state)
  99 {
 100     GfxFont*font = state->getFont();
 101     if(!font)
 102         return;
 103     if(font->getType() == fontType3) {
 104         return;
 105     }
 106     char*id = getFontID(font);
 107
 108     FontInfo*info = (FontInfo*)id2font->lookup(id);
 109     if(info) {
 110         /* font already known */
 111         free(id);
 112         currentfont = info;
 113         return;
 114     }
 115
 116     info = new FontInfo;
 117     info->font = font;
 118     info->max_size = 0;
 119
 120     state->setCTM(1.0,0,0,1.0,0,0);
 121     splash->updateCTM(state, 0,0,0,0,0,0);
 122     state->setTextMat(1.0,0,0,-1.0,0,0);
 123     state->setFont(font, 1024.0);
 124     splash->doUpdateFont(state);
 125     info->splash_font = splash->getCurrentFont();
 126     info->num_glyphs = 0;
 127     info->glyphs = 0;
 128
 129     if(!info->splash_font) {
 130         delete info;
 131         return;
 132     }
 133
 134     GString* idStr = new GString(id);
 135     id2font->add(idStr, (void*)info);
 136     num_fonts++;
 137     currentfont = info;
 138     free(id);
 139 }
 140 FontInfo* InfoOutputDev::getFont(char*id)
 141 {
 142     return (FontInfo*)id2font->lookup(id);
 143 }
 144
 145 void InfoOutputDev::drawChar(GfxState *state, double x, double y,
 146                       double dx, double dy,
 147                       double originX, double originY,
 148                       CharCode code, int nBytes, Unicode *u, int uLen)
 149 {
 150     double m11,m21,m12,m22;
 151     state->getFontTransMat(&m11, &m12, &m21, &m22);
 152     m11 *= state->getHorizScaling();
 153     m21 *= state->getHorizScaling();
 154     double lenx = sqrt(m11*m11 + m12*m12);
 155     double leny = sqrt(m21*m21 + m22*m22);
 156     double len = lenx>leny?lenx:leny;
 157     if(currentfont && currentfont->max_size < len) {
 158         currentfont->max_size = len;
 159     }
 160     if(code >= currentfont->num_glyphs) {
 161         currentfont->glyphs = (GlyphInfo**)realloc(currentfont->glyphs, sizeof(GlyphInfo*)*(code+1));
 162         memset(&currentfont->glyphs[currentfont->num_glyphs], 0, sizeof(SplashPath*)*((code+1)-currentfont->num_glyphs));
 163         currentfont->num_glyphs = code+1;
 164     }
 165     GlyphInfo*g = currentfont->glyphs[code];
 166     if(!g) {
 167         g = currentfont->glyphs[code] = new GlyphInfo();
 168         g->path = currentfont->splash_font->getGlyphPath(code);
 169         g->unicode = 0;
 170     }
 171     if(uLen && (u[0]>=32 && u[0]<g->unicode || !g->unicode)) {
 172         g->unicode = u[0];
 173     }
 174
 175 }
 176 void InfoOutputDev::drawImageMask(GfxState *state, Object *ref, Stream *str,
 177                            int width, int height, GBool invert,
 178                            GBool inlineImg)
 179 {
 180     num_images++;
 181     OutputDev::drawImageMask(state,ref,str,width,height,invert,inlineImg);
 182 }
 183 void InfoOutputDev::drawImage(GfxState *state, Object *ref, Stream *str,
 184                        int width, int height, GfxImageColorMap *colorMap,
 185                        int *maskColors, GBool inlineImg)
 186 {
 187     num_images++;
 188     OutputDev::drawImage(state,ref,str,width,height,colorMap,maskColors,inlineImg);
 189 }
 190 void InfoOutputDev::drawMaskedImage(GfxState *state, Object *ref, Stream *str,
 191                                 int width, int height,
 192                                 GfxImageColorMap *colorMap,
 193                                 Stream *maskStr,
 194                                 int maskWidth, int maskHeight,
 195                                 GBool maskInvert)
 196 {
 197     OutputDev::drawMaskedImage(state,ref,str,width,height,colorMap,maskStr,maskWidth,maskHeight,maskInvert);
 198 }
 199
 200 void InfoOutputDev::drawSoftMaskedImage(GfxState *state, Object *ref, Stream *str,
 201                                     int width, int height,
 202                                     GfxImageColorMap *colorMap,
 203                                     Stream *maskStr,
 204                                     int maskWidth, int maskHeight,
 205                                     GfxImageColorMap *maskColorMap)
 206 {
 207     OutputDev::drawSoftMaskedImage(state,ref,str,width,height,colorMap,maskStr,maskWidth,maskHeight,maskColorMap);
 208 }