fixed vertical alignment bug
[swftools.git] / lib / pdf / GFXOutputDev.cc
index f2074b8..940f5a0 100644 (file)
@@ -540,7 +540,7 @@ GFXOutputDev::GFXOutputDev(InfoOutputDev*info, PDFDoc*doc)
     this->info = info;
     this->doc = doc;
     this->xref = doc->getXRef();
-
+    
     this->jpeginfo = 0;
     this->textmodeinfo = 0;
     this->linkinfo = 0;
@@ -564,6 +564,7 @@ GFXOutputDev::GFXOutputDev(InfoOutputDev*info, PDFDoc*doc)
     this->pages = 0;
     this->pagebuflen = 0;
     this->pagepos = 0;
+    this->config_bigchar=0;
     this->config_convertgradients=1;
     this->config_break_on_warning=0;
     this->config_remapunicode=0;
@@ -571,8 +572,10 @@ GFXOutputDev::GFXOutputDev(InfoOutputDev*info, PDFDoc*doc)
     this->config_extrafontdata = 0;
     this->config_fontquality = 10;
     this->config_optimize_polygons = 0;
+    this->config_multiply = 1;
 
     this->gfxfontlist = gfxfontlist_create();
+    this->dashPattern = 0;
   
     memset(states, 0, sizeof(states));
     this->featurewarnings = 0;
@@ -590,8 +593,14 @@ void GFXOutputDev::setParameter(const char*key, const char*value)
         this->config_extrafontdata = atoi(value);
     } else if(!strcmp(key,"convertgradients")) {
         this->config_convertgradients = atoi(value);
+    } else if(!strcmp(key,"multiply")) {
+        this->config_multiply = atoi(value);
+        if(this->config_multiply<1) 
+            this->config_multiply=1;
     } else if(!strcmp(key,"optimize_polygons")) {
         this->config_optimize_polygons = atoi(value);
+    } else if(!strcmp(key,"bigchar")) {
+        this->config_bigchar = atoi(value);
     } else if(!strcmp(key,"fontquality")) {
         this->config_fontquality = atof(value);
        if(this->config_fontquality<=1)
@@ -996,6 +1005,8 @@ GBool GFXOutputDev::axialShadedFill(GfxState *state, GfxAxialShading *shading)
     m.ty = (y0 + y1)/2 - 0.5;
 
     device->fillgradient(device, &p1, g, gfxgradient_linear, &m);
+
+    free(g);
     return gTrue;
 }
   
@@ -1080,6 +1091,8 @@ void GFXOutputDev::strokeGfxline(GfxState *state, gfxline_t*line, int flags)
        msg("<trace> |  phase: %f", this->dashStart);
        for(t=0;t<this->dashLength;t++) {
            dash[t] = (float)this->dashPattern[t] * f;
+            if(!dash[t])
+                dash[t] = 1e-37;
            msg("<trace> |  d%-3d: %f", t, this->dashPattern[t]);
        }
        dash[this->dashLength] = -1;
@@ -1220,6 +1233,9 @@ GFXOutputDev::~GFXOutputDev()
     if(this->pages) {
        free(this->pages); this->pages = 0;
     }
+    if(this->dashPattern) {
+        free(this->dashPattern);this->dashPattern = 0;
+    }
     
     feature_t*f = this->featurewarnings;
     while(f) {
@@ -1357,7 +1373,7 @@ void GFXOutputDev::drawChar(GfxState *state, double x, double y,
 
     gfxmatrix_t m = this->current_font_matrix;
     this->transformXY(state, x-originX, y-originY, &m.tx, &m.ty);
-    m.tx += originX; m.ty += originY;
+    //m.tx += originX; m.ty += originY;
 
     if(render == RENDER_FILL || render == RENDER_INVISIBLE) {
        device->drawchar(device, current_gfxfont, glyphid, &col, &m);
@@ -1778,10 +1794,18 @@ void GFXOutputDev::restoreState(GfxState *state) {
  
 void GFXOutputDev::updateLineDash(GfxState *state) 
 {
-    state->getLineDash(&this->dashPattern, &this->dashLength, &this->dashStart);
+    if(this->dashPattern) {
+        free(this->dashPattern);this->dashPattern = 0;
+    }
+    double *pattern = 0;
+    state->getLineDash(&pattern, &this->dashLength, &this->dashStart);
     msg("<debug> updateLineDash, %d dashes", this->dashLength);
     if(!this->dashLength) {
         this->dashPattern = 0;
+    } else {
+        double*p = (double*)malloc(this->dashLength*sizeof(this->dashPattern[0]));
+        memcpy(p, pattern, this->dashLength*sizeof(this->dashPattern[0]));
+        this->dashPattern = p;
     }
 }
 
@@ -1842,7 +1866,7 @@ void GFXOutputDev::updateStrokeColor(GfxState *state)
 }
 
 
-static gfxfont_t* createGfxFont(GfxFont*xpdffont, FontInfo*src, double config_fontquality)
+gfxfont_t* GFXOutputDev::createGfxFont(GfxFont*xpdffont, FontInfo*src)
 {
     gfxfont_t*font = (gfxfont_t*)malloc(sizeof(gfxfont_t));
     memset(font, 0, sizeof(gfxfont_t));
@@ -1851,11 +1875,14 @@ static gfxfont_t* createGfxFont(GfxFont*xpdffont, FontInfo*src, double config_fo
     memset(font->glyphs, 0, sizeof(gfxglyph_t)*src->num_glyphs);
     font->id = 0;
     int t;
-    
+
     double quality = (INTERNAL_FONT_SIZE * 200 / config_fontquality) / src->max_size;
     double scale = 1;
     //printf("%d glyphs\n", font->num_glyphs);
     font->num_glyphs = 0;
+    font->ascent = fabs(src->descender);
+    font->descent = fabs(src->ascender);
+    
     for(t=0;t<src->num_glyphs;t++) {
        if(src->glyphs[t]) {
            SplashPath*path = src->glyphs[t]->path;
@@ -1897,8 +1924,21 @@ static gfxfont_t* createGfxFont(GfxFont*xpdffont, FontInfo*src, double config_fo
             //                           (f&splashPathFirst)?"first":"",
             //                           (f&splashPathLast)?"last":"");
            }
+
            glyph->line = (gfxline_t*)drawer.result(&drawer);
-           glyph->advance = xmax*scale; // we don't know the real advance value, so this'll have to do
+           if(src->glyphs[t]->advance>0) {
+               glyph->advance = src->glyphs[t]->advance;
+           } else {
+               msg("<warning> Approximating advance value for glyph %d", t);
+               glyph->advance = xmax*scale;
+           }
+           if(this->config_bigchar) {
+               double max = src->glyphs[t]->advance_max;
+               if(max>0 && max > glyph->advance) {
+                   glyph->advance = max;
+               }
+           }
+
            font->num_glyphs++;
        }
     }
@@ -1944,7 +1984,7 @@ void GFXOutputDev::updateFont(GfxState *state)
     
     gfxfont_t*font = gfxfontlist_findfont(this->gfxfontlist,id);
     if(!font) {
-       font = createGfxFont(gfxFont, current_fontinfo, this->config_fontquality);
+       font = this->createGfxFont(gfxFont, current_fontinfo);
         font->id = strdup(id);
        this->gfxfontlist = gfxfontlist_addfont(this->gfxfontlist, font);
     }
@@ -2016,7 +2056,7 @@ static void drawimage(gfxdevice_t*dev, gfxcolor_t* data, int sizex,int sizey,
         double x1,double y1,
         double x2,double y2,
         double x3,double y3,
-        double x4,double y4, int type)
+        double x4,double y4, int type, int multiply)
 {
     gfxcolor_t*newpic=0;
     
@@ -2041,12 +2081,13 @@ static void drawimage(gfxdevice_t*dev, gfxcolor_t* data, int sizex,int sizey,
      p5.x = (int)(p5.x*20)/20.0;
      p5.y = (int)(p5.y*20)/20.0;
     }
-    
+
     gfxmatrix_t m;
     m.m00 = (p4.x-p1.x)/sizex; m.m10 = (p2.x-p1.x)/sizey;
     m.m01 = (p4.y-p1.y)/sizex; m.m11 = (p2.y-p1.y)/sizey;
-    m.tx = p1.x - 0.5;
-    m.ty = p1.y - 0.5;
+        
+    m.tx = p1.x - 0.5*multiply;
+    m.ty = p1.y - 0.5*multiply;
 
     gfximage_t img;
     img.data = (gfxcolor_t*)data;
@@ -2062,15 +2103,15 @@ static void drawimage(gfxdevice_t*dev, gfxcolor_t* data, int sizex,int sizey,
 }
 
 void drawimagejpeg(gfxdevice_t*dev, gfxcolor_t*mem, int sizex,int sizey, 
-        double x1,double y1, double x2,double y2, double x3,double y3, double x4,double y4)
+        double x1,double y1, double x2,double y2, double x3,double y3, double x4,double y4, int multiply)
 {
-    drawimage(dev,mem,sizex,sizey,x1,y1,x2,y2,x3,y3,x4,y4, IMAGE_TYPE_JPEG);
+    drawimage(dev,mem,sizex,sizey,x1,y1,x2,y2,x3,y3,x4,y4, IMAGE_TYPE_JPEG, multiply);
 }
 
 void drawimagelossless(gfxdevice_t*dev, gfxcolor_t*mem, int sizex,int sizey, 
-        double x1,double y1, double x2,double y2, double x3,double y3, double x4,double y4)
+        double x1,double y1, double x2,double y2, double x3,double y3, double x4,double y4, int multiply)
 {
-    drawimage(dev,mem,sizex,sizey,x1,y1,x2,y2,x3,y3,x4,y4, IMAGE_TYPE_LOSSLESS);
+    drawimage(dev,mem,sizex,sizey,x1,y1,x2,y2,x3,y3,x4,y4, IMAGE_TYPE_LOSSLESS, multiply);
 }
 
 
@@ -2135,7 +2176,7 @@ void GFXOutputDev::drawGeneralImage(GfxState *state, Object *ref, Stream *str,
   imgStr = new ImageStream(str, width, ncomps,bits);
   imgStr->reset();
 
-  if(!width || !height || (height<=1 && width<=1 && maskWidth<=1 && maskHeight<=1))
+  if(!width || !height || ((height+width)<=1 && (maskWidth+maskHeight)<=1))
   {
       msg("<verbose> Ignoring %d by %d image", width, height);
       unsigned char buf[8];
@@ -2203,7 +2244,7 @@ void GFXOutputDev::drawGeneralImage(GfxState *state, Object *ref, Stream *str,
                buf[0]=1-buf[0];
            pic[width*y+x] = buf[0];
       }
-      
+     
       if(type3active) {
          unsigned char*pic2 = 0;
          numpalette = 16;
@@ -2240,7 +2281,7 @@ void GFXOutputDev::drawGeneralImage(GfxState *state, Object *ref, Stream *str,
          pic2[width*y+x] = pal[pic[y*width+x]];
        }
       }
-      drawimagelossless(device, pic2, width, height, x1,y1,x2,y2,x3,y3,x4,y4);
+      drawimagelossless(device, pic2, width, height, x1,y1,x2,y2,x3,y3,x4,y4, config_multiply);
       delete[] pic2;
       delete[] pic;
       delete imgStr;
@@ -2282,9 +2323,9 @@ void GFXOutputDev::drawGeneralImage(GfxState *state, Object *ref, Stream *str,
        }
       }
       if(str->getKind()==strDCT)
-         drawimagejpeg(device, pic, width, height, x1,y1,x2,y2,x3,y3,x4,y4);
+         drawimagejpeg(device, pic, width, height, x1,y1,x2,y2,x3,y3,x4,y4, config_multiply);
       else
-         drawimagelossless(device, pic, width, height, x1,y1,x2,y2,x3,y3,x4,y4);
+         drawimagelossless(device, pic, width, height, x1,y1,x2,y2,x3,y3,x4,y4, config_multiply);
       delete[] pic;
       delete imgStr;
       if(maskbitmap) free(maskbitmap);
@@ -2359,7 +2400,7 @@ void GFXOutputDev::drawGeneralImage(GfxState *state, Object *ref, Stream *str,
              height = maskHeight;
          }
       }
-      drawimagelossless(device, pic, width, height, x1,y1,x2,y2,x3,y3,x4,y4);
+      drawimagelossless(device, pic, width, height, x1,y1,x2,y2,x3,y3,x4,y4, config_multiply);
 
       delete[] pic;
       delete imgStr;
@@ -2571,17 +2612,20 @@ void GFXOutputDev::preparePage(int pdfpage, int outputpage)
 
     if(!this->pages) {
        this->pagebuflen = 1024;
+       if(pdfpage > this->pagebuflen)
+           this->pagebuflen = pdfpage+1;
        this->pages = (int*)malloc(this->pagebuflen*sizeof(int));
        memset(this->pages, -1, this->pagebuflen*sizeof(int));
-    } else {
-       while(pdfpage >= this->pagebuflen)
-       {
-           int oldlen = this->pagebuflen;
-           this->pagebuflen+=1024;
-           this->pages = (int*)realloc(this->pages, this->pagebuflen*sizeof(int));
-           memset(&this->pages[oldlen], -1, (this->pagebuflen-oldlen)*sizeof(int));
-       }
     }
+
+    while(pdfpage >= this->pagebuflen)
+    {
+       int oldlen = this->pagebuflen;
+       this->pagebuflen+=1024;
+       this->pages = (int*)realloc(this->pages, this->pagebuflen*sizeof(int));
+       memset(&this->pages[oldlen], -1, (this->pagebuflen-oldlen)*sizeof(int));
+    }
+
     this->pages[pdfpage] = outputpage;
     if(pdfpage>this->pagepos)
        this->pagepos = pdfpage;