moved all fields valid for more than one page out of the class
[swftools.git] / lib / pdf / GFXOutputDev.cc
index fed1333..def11a6 100644 (file)
 #endif
 //xpdf header files
 #include "config.h"
+#ifdef HAVE_POPPLER
+#include <goo/GooString.h>
+#include <goo/gfile.h>
+#else
 #include "gfile.h"
 #include "GString.h"
-#include "gmem.h"
+#endif
 #include "Object.h"
 #include "Stream.h"
 #include "Array.h"
 #include "OutputDev.h"
 #include "GfxFont.h"
 #include "GfxState.h"
-#include "CharCodeToUnicode.h"
 #include "NameToUnicodeTable.h"
 #include "GlobalParams.h"
-#include "FoFiType1C.h"
-#include "FoFiTrueType.h"
-#include "GHash.h"
 #include "GFXOutputDev.h"
 
 //  swftools header files
@@ -125,7 +125,7 @@ struct fontentry {
 
 
 static int verbose = 0;
-static int dbgindent = 0;
+static int dbgindent = 1;
 static void dbg(const char*format, ...)
 {
     char buf[1024];
@@ -151,19 +151,43 @@ static void dbg(const char*format, ...)
     fflush(stdout);
 }
 
+GFXOutputGlobals*gfxglobals=0;
 
-void GFXOutputDev::showfeature(const char*feature, char fully, char warn)
+GFXOutputGlobals::GFXOutputGlobals()
+{
+    this->featurewarnings = 0;
+    this->jpeginfo = 0;
+    this->textmodeinfo = 0;
+    this->linkinfo = 0;
+    this->pbminfo = 0;
+}
+GFXOutputGlobals::~GFXOutputGlobals()
 {
     feature_t*f = this->featurewarnings;
     while(f) {
+       feature_t*next = f->next;
+       if(f->string) {
+           free(f->string);f->string =0;
+       }
+       f->next = 0;
+       free(f);
+       f = next;
+    }
+    this->featurewarnings = 0;
+}
+
+void GFXOutputDev::showfeature(const char*feature, char fully, char warn)
+{
+    feature_t*f = gfxglobals->featurewarnings;
+    while(f) {
        if(!strcmp(feature, f->string))
            return;
        f = f->next;
     }
     f = (feature_t*)malloc(sizeof(feature_t));
     f->string = strdup(feature);
-    f->next = this->featurewarnings;
-    this->featurewarnings = f;
+    f->next = gfxglobals->featurewarnings;
+    gfxglobals->featurewarnings = f;
     if(warn) {
        msg("<warning> %s not yet %ssupported!",feature,fully?"fully ":"");
        if(this->config_break_on_warning) {
@@ -294,7 +318,7 @@ static int config_use_fontconfig = 1;
 static int fcinitcalled = 0; 
 
 GFXGlobalParams::GFXGlobalParams()
-: GlobalParams("")
+: GlobalParams((char*)"")
 {
     //setupBaseFonts(char *dir); //not tested yet
 }
@@ -537,19 +561,16 @@ DisplayFontParam *GFXGlobalParams::getDisplayFont(GString *fontName)
 
 GFXOutputDev::GFXOutputDev(InfoOutputDev*info, PDFDoc*doc)
 {
+    if(!gfxglobals)
+        gfxglobals = new GFXOutputGlobals();
+
     this->info = info;
     this->doc = doc;
     this->xref = doc->getXRef();
-
-    this->jpeginfo = 0;
-    this->textmodeinfo = 0;
-    this->linkinfo = 0;
-    this->pbminfo = 0;
+    
     this->type3active = 0;
     this->statepos = 0;
     this->xref = 0;
-    this->substitutepos = 0;
-    this->type3Warning = 0;
     this->user_movex = 0;
     this->user_movey = 0;
     this->clipmovex = 0;
@@ -561,21 +582,19 @@ GFXOutputDev::GFXOutputDev(InfoOutputDev*info, PDFDoc*doc)
     this->current_text_stroke = 0;
     this->current_text_clip = 0;
     this->outer_clip_box = 0;
-    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;
     this->config_transparent=0;
     this->config_extrafontdata = 0;
-    this->config_fontquality = 10;
     this->config_optimize_polygons = 0;
-
-    this->gfxfontlist = gfxfontlist_create();
+    this->config_multiply = 1;
+    this->dashPattern = 0;
+    this->page2page = 0;
+    this->num_pages = 0;
   
     memset(states, 0, sizeof(states));
-    this->featurewarnings = 0;
 };
 
 void GFXOutputDev::setParameter(const char*key, const char*value)
@@ -590,21 +609,13 @@ 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,"fontquality")) {
-        this->config_fontquality = atof(value);
-       if(this->config_fontquality<=1)
-           this->config_fontquality=1;
-    } else if(!strcmp(key,"help")) {
-       printf("\nPDF layer options:\n");
-       printf("breakonwarning=0/1  Abort conversion if graphic objects are found which\n");
-       printf("                    are not 100%% supported\n");
-       printf("transparent=0/1     Make PDF transparent (alpha background)\n");
-       printf("extrafontdata=0/1   Store Type3 characters and capture characters\n");
-       printf("fontquality=1..100  Curve approximation quality of the fonts\n");
     }
-    
 }
   
 void GFXOutputDev::setDevice(gfxdevice_t*dev)
@@ -1003,6 +1014,8 @@ 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;
 }
   
@@ -1083,12 +1096,12 @@ void GFXOutputDev::strokeGfxline(GfxState *state, gfxline_t*line, int flags)
        this->transformXY(state, 1, 1, &tx2, &ty2);
         double f = sqrt(sqr(tx2-tx1)+sqr(ty2-ty1)) / SQRT2;
 
-       f = 1.0; //disable dash length transform for now
-
        msg("<trace> %d dashes", this->dashLength);
        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;
@@ -1225,24 +1238,9 @@ void GFXOutputDev::finish()
 GFXOutputDev::~GFXOutputDev() 
 {
     finish();
-
-    if(this->pages) {
-       free(this->pages); this->pages = 0;
-    }
-    
-    feature_t*f = this->featurewarnings;
-    while(f) {
-       feature_t*next = f->next;
-       if(f->string) {
-           free(f->string);f->string =0;
-       }
-       f->next = 0;
-       free(f);
-       f = next;
+    if(this->dashPattern) {
+        free(this->dashPattern);this->dashPattern = 0;
     }
-    this->featurewarnings = 0;
-
-    gfxfontlist_free(this->gfxfontlist, 1);this->gfxfontlist = 0;
 };
 GBool GFXOutputDev::upsideDown() 
 {
@@ -1281,7 +1279,6 @@ char* makeStringPrintable(char*str)
     tmp_printstr[len] = 0;
     return tmp_printstr;
 }
-#define INTERNAL_FONT_SIZE 1024.0
 void GFXOutputDev::updateFontMatrix(GfxState*state)
 {
     double* ctm = state->getCTM();
@@ -1365,15 +1362,16 @@ void GFXOutputDev::drawChar(GfxState *state, double x, double y,
     msg("<debug> drawChar(%f,%f,c='%c' (%d), u=%d <%d>) CID=%d render=%d glyphid=%d font=%08x",x,y,(charid&127)>=32?charid:'?', charid, u, uLen, font->isCIDFont(), render, glyphid, current_gfxfont);
 
     gfxmatrix_t m = this->current_font_matrix;
-    this->transformXY(state, x, y, &m.tx, &m.ty);
+    this->transformXY(state, x-originX, y-originY, &m.tx, &m.ty);
+    //m.tx += originX; m.ty += originY;
 
     if(render == RENDER_FILL || render == RENDER_INVISIBLE) {
        device->drawchar(device, current_gfxfont, glyphid, &col, &m);
     } else {
        msg("<debug> Drawing glyph %d as shape", charid);
-       if(!textmodeinfo) {
+       if(!gfxglobals->textmodeinfo) {
            msg("<notice> Some texts will be rendered as shape");
-           textmodeinfo = 1;
+           gfxglobals->textmodeinfo = 1;
        }
        gfxline_t*glyph = current_gfxfont->glyphs[glyphid].line;
        gfxline_t*tglyph = gfxline_clone(glyph);
@@ -1658,8 +1656,9 @@ void GFXOutputDev::processLink(Link *link, Catalog *catalog)
                     }
                     else if(strstr(s, "last") || strstr(s, "end"))
                     {
-                       if(pages && pagepos>0)
-                           page = pages[pagepos-1];
+                        if(this->page2page && this->num_pages) {
+                           page = this->page2page[this->num_pages-1];
+                        }
                     }
                     else if(strstr(s, "first") || strstr(s, "top"))
                     {
@@ -1707,25 +1706,25 @@ void GFXOutputDev::processLink(Link *link, Catalog *catalog)
     
     msg("<trace> drawlink s=%s", s);
 
-    if(!linkinfo && (page || s))
+    if(!gfxglobals->linkinfo && (page || s))
     {
         msg("<notice> File contains links");
-        linkinfo = 1;
+        gfxglobals->linkinfo = 1;
     }
     
-    if(page>0)
-    {
+    if(page>0) {
         int t;
        int lpage = -1;
-        for(t=1;t<=pagepos;t++) {
-            if(pages[t]==page) {
+        for(t=1;t<=this->num_pages;t++) {
+            if(this->page2page[t]==page) {
                lpage = t;
                 break;
            }
        }
         if(lpage<0) {
            lpage = page;
-       }
+        }
+
        char buf[80];
        sprintf(buf, "page%d", lpage);
        device->drawlink(device, points, buf);
@@ -1740,49 +1739,72 @@ void GFXOutputDev::processLink(Link *link, Catalog *catalog)
 }
 
 void GFXOutputDev::saveState(GfxState *state) {
-    dbg("saveState"); dbgindent+=2;
+    dbg("saveState %08x", state); dbgindent+=2;
 
-    msg("<trace> saveState");
+    msg("<trace> saveState %08x", state);
     updateAll(state);
     if(statepos>=64) {
-      msg("<error> Too many nested states in pdf.");
-      return;
+      msg("<fatal> Too many nested states in pdf.");
+      exit(1);
     }
     statepos ++;
+    states[statepos].state = state;
     states[statepos].createsoftmask = states[statepos-1].createsoftmask;
     states[statepos].transparencygroup = states[statepos-1].transparencygroup;
     states[statepos].clipping = 0;
+    states[statepos].olddevice = 0;
     states[statepos].clipbbox = states[statepos-1].clipbbox;
 };
 
 void GFXOutputDev::restoreState(GfxState *state) {
-  dbgindent-=2; dbg("restoreState");
+  dbgindent-=2; dbg("restoreState %08x", state);
 
   if(statepos==0) {
-      msg("<error> Invalid restoreState");
-      return;
+      msg("<fatal> Invalid restoreState");
+      exit(1);
   }
-  msg("<trace> restoreState%s%s", states[statepos].softmask?" (end softmask)":"",
+  msg("<trace> restoreState %08x%s%s", state,
+                                 states[statepos].softmask?" (end softmask)":"",
                                  states[statepos].clipping?" (end clipping)":"");
   if(states[statepos].softmask) {
       clearSoftMask(state);
   }
   updateAll(state);
+  
   while(states[statepos].clipping) {
       device->endclip(device);
       states[statepos].clipping--;
   }
+  if(states[statepos].state!=state) {
+      msg("<fatal> bad state nesting");
+      exit(1);
+  }
+  states[statepos].state=0;
   statepos--;
 }
  
 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;
     }
 }
+  
+void GFXOutputDev::setPageMap(int*page2page, int num_pages)
+{
+    this->page2page = page2page;
+    this->num_pages = num_pages;
+}
 
 void GFXOutputDev::updateLineWidth(GfxState *state)
 {
@@ -1840,79 +1862,6 @@ void GFXOutputDev::updateStrokeColor(GfxState *state)
     state->getStrokeRGB(&rgb);
 }
 
-
-static gfxfont_t* createGfxFont(GfxFont*xpdffont, FontInfo*src, double config_fontquality)
-{
-    gfxfont_t*font = (gfxfont_t*)malloc(sizeof(gfxfont_t));
-    memset(font, 0, sizeof(gfxfont_t));
-
-    font->glyphs = (gfxglyph_t*)malloc(sizeof(gfxglyph_t)*src->num_glyphs);
-    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;
-    for(t=0;t<src->num_glyphs;t++) {
-       if(src->glyphs[t]) {
-           SplashPath*path = src->glyphs[t]->path;
-           int len = path?path->getLength():0;
-           //printf("glyph %d) %08x (%d line segments)\n", t, path, len);
-           gfxglyph_t*glyph = &font->glyphs[font->num_glyphs];
-           src->glyphs[t]->glyphid = font->num_glyphs;
-           glyph->unicode = src->glyphs[t]->unicode;
-           if(glyph->unicode >= font->max_unicode)
-               font->max_unicode = glyph->unicode+1;
-           gfxdrawer_t drawer;
-           gfxdrawer_target_gfxline(&drawer);
-           int s;
-           int count = 0;
-           double xmax = 0;
-           for(s=0;s<len;s++) {
-               Guchar f;
-               double x, y;
-               path->getPoint(s, &x, &y, &f);
-               if(!s || x > xmax)
-                   xmax = x;
-               if(f&splashPathFirst) {
-                   drawer.moveTo(&drawer, x*scale, y*scale);
-               }
-               if(f&splashPathCurve) {
-                   double x2,y2;
-                   path->getPoint(++s, &x2, &y2, &f);
-                   if(f&splashPathCurve) {
-                       double x3,y3;
-                       path->getPoint(++s, &x3, &y3, &f);
-                       gfxdraw_cubicTo(&drawer, x*scale, y*scale, x2*scale, y2*scale, x3*scale, y3*scale, quality);
-                   } else {
-                       drawer.splineTo(&drawer, x*scale, y*scale, x2*scale, y2*scale);
-                   }
-               } else {
-                   drawer.lineTo(&drawer, x*scale, y*scale);
-               }
-            //   printf("%f %f %s %s\n", x, y, (f&splashPathCurve)?"curve":"",
-            //                           (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
-           font->num_glyphs++;
-       }
-    }
-    font->unicode2glyph = (int*)malloc(sizeof(int)*font->max_unicode);
-    memset(font->unicode2glyph, -1, sizeof(int)*font->max_unicode);
-    for(t=0;t<font->num_glyphs;t++) {
-       if(font->glyphs[t].unicode>0 && font->glyphs[t].unicode<font->max_unicode) {
-           font->unicode2glyph[font->glyphs[t].unicode] = t;
-       }
-
-    }
-    msg("<trace> %d glyphs.", t, font->num_glyphs);
-    return font;
-}
-
 void GFXOutputDev::updateFont(GfxState *state) 
 {
     GfxFont* gfxFont = state->getFont();
@@ -1940,16 +1889,9 @@ void GFXOutputDev::updateFont(GfxState *state)
     if(!this->current_fontinfo->seen) {
        dumpFontInfo("<verbose>", gfxFont);
     }
-    
-    gfxfont_t*font = gfxfontlist_findfont(this->gfxfontlist,id);
-    if(!font) {
-       font = createGfxFont(gfxFont, current_fontinfo, this->config_fontquality);
-        font->id = strdup(id);
-       this->gfxfontlist = gfxfontlist_addfont(this->gfxfontlist, font);
-    }
-    device->addfont(device, font);
 
-    current_gfxfont = font;
+    current_gfxfont = this->current_fontinfo->gfxfont;
+    device->addfont(device, current_gfxfont);
     free(id);
 
     updateFontMatrix(state);
@@ -1959,7 +1901,7 @@ void GFXOutputDev::updateFont(GfxState *state)
 
 unsigned char* antialize(unsigned char*data, int width, int height, int newwidth, int newheight, int palettesize)
 {
-    if((newwidth<2 || newheight<2) ||
+    if((newwidth<1 || newheight<1) ||
        (width<=newwidth || height<=newheight))
        return 0;
     unsigned char*newdata;
@@ -1974,19 +1916,23 @@ unsigned char* antialize(unsigned char*data, int width, int height, int newwidth
        double ex = px + fx;
        int fromx = (int)px;
        int tox = (int)ex;
-       int xweight1 = (int)(((fromx+1)-px)*256);
+       int xweight1 = (int)((1-(px-fromx))*256);
        int xweight2 = (int)((ex-tox)*256);
        double py =0;
        for(y=0;y<newheight;y++) {
            double ey = py + fy;
            int fromy = (int)py;
            int toy = (int)ey;
-           int yweight1 = (int)(((fromy+1)-py)*256);
+           int yweight1 = (int)((1-(py-fromy))*256);
            int yweight2 = (int)((ey-toy)*256);
            int a = 0;
            int xx,yy;
-           for(xx=fromx;xx<tox;xx++)
-           for(yy=fromy;yy<toy;yy++) {
+            if(tox>=width) 
+                tox = width-1;
+            if(toy>=height) 
+                toy = height-1;
+           for(xx=fromx;xx<=tox;xx++)
+           for(yy=fromy;yy<=toy;yy++) {
                int b = 1-data[width*yy+xx];
                int weight=256;
                if(xx==fromx) weight = (weight*xweight1)/256;
@@ -2011,7 +1957,7 @@ 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;
     
@@ -2036,12 +1982,13 @@ 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;
@@ -2052,19 +1999,20 @@ static void drawimage(gfxdevice_t*dev, gfxcolor_t* data, int sizex,int sizey,
        /* TODO: pass image_dpi to device instead */
        dev->setparameter(dev, "next_bitmap_is_jpeg", "1");
 
+    dump_outline(&p1);
     dev->fillbitmap(dev, &p1, &img, &m, 0);
 }
 
 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);
 }
 
 
@@ -2073,6 +2021,8 @@ void GFXOutputDev::drawGeneralImage(GfxState *state, Object *ref, Stream *str,
                                   GBool inlineImg, int mask, int*maskColors,
                                   Stream *maskStr, int maskWidth, int maskHeight, GBool maskInvert, GfxImageColorMap*maskColorMap)
 {
+  /* the code in this function is *old*. It's not pretty, but it works. */
+
   double x1,y1,x2,y2,x3,y3,x4,y4;
   ImageStream *imgStr;
   Guchar pixBuf[4];
@@ -2127,7 +2077,7 @@ 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];
@@ -2142,22 +2092,32 @@ void GFXOutputDev::drawGeneralImage(GfxState *state, Object *ref, Stream *str,
       return;
   }
 
-  this->transformXY(state, 0, 1, &x1, &y1); x1 = (int)(x1);y1 = (int)(y1);
-  this->transformXY(state, 0, 0, &x2, &y2); x2 = (int)(x2);y2 = (int)(y2);
-  this->transformXY(state, 1, 0, &x3, &y3); x3 = (int)(x3);y3 = (int)(y3);
-  this->transformXY(state, 1, 1, &x4, &y4); x4 = (int)(x4);y4 = (int)(y4);
+  this->transformXY(state, 0, 1, &x1, &y1);
+  this->transformXY(state, 0, 0, &x2, &y2);
+  this->transformXY(state, 1, 0, &x3, &y3);
+  this->transformXY(state, 1, 1, &x4, &y4);
+
+  if(type3active) {
+      /* as type 3 bitmaps are antialized, we need to place them
+        at integer coordinates, otherwise flash player's antializing
+        will kick in and make everything blurry */
+      x1 = (int)(x1);y1 = (int)(y1);
+      x2 = (int)(x2);y2 = (int)(y2);
+      x3 = (int)(x3);y3 = (int)(y3);
+      x4 = (int)(x4);y4 = (int)(y4);
+  }
 
-  if(!pbminfo && !(str->getKind()==strDCT)) {
+  if(!gfxglobals->pbminfo && !(str->getKind()==strDCT)) {
       if(!type3active) {
          msg("<notice> File contains pbm pictures %s",mask?"(masked)":"");
-         pbminfo = 1;
+         gfxglobals->pbminfo = 1;
       }
       if(mask)
       msg("<verbose> drawing %d by %d masked picture", width, height);
   }
-  if(!jpeginfo && (str->getKind()==strDCT)) {
+  if(!gfxglobals->jpeginfo && (str->getKind()==strDCT)) {
       msg("<notice> File contains jpeg pictures");
-      jpeginfo = 1;
+      gfxglobals->jpeginfo = 1;
   }
 
   if(mask) {
@@ -2185,11 +2145,7 @@ void GFXOutputDev::drawGeneralImage(GfxState *state, Object *ref, Stream *str,
                buf[0]=1-buf[0];
            pic[width*y+x] = buf[0];
       }
-      
-      /* the size of the drawn image is added to the identifier
-        as the same image may require different bitmaps if displayed
-        at different sizes (due to antialiasing): */
-      int found = -1;
+     
       if(type3active) {
          unsigned char*pic2 = 0;
          numpalette = 16;
@@ -2226,7 +2182,7 @@ 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;
@@ -2247,14 +2203,30 @@ void GFXOutputDev::drawGeneralImage(GfxState *state, Object *ref, Stream *str,
          pic[width*y+x].b = (unsigned char)(colToByte(rgb.b));
          pic[width*y+x].a = 255;//(U8)(rgb.a * 255 + 0.5);
          if(maskbitmap) {
-             pic[width*y+x].a = maskbitmap[(y*maskHeight/height)*maskWidth+(x*maskWidth/width)];
+              int x1 = x*maskWidth/width;
+              int y1 = y*maskHeight/height;
+              int x2 = (x+1)*maskWidth/width;
+              int y2 = (y+1)*maskHeight/height;
+              int xx,yy;
+              unsigned int alpha=0;
+              unsigned int count=0;
+              for(xx=x1;xx<x2;xx++)
+              for(yy=y1;yy<y2;yy++) {
+                  alpha += maskbitmap[yy*maskWidth+xx];
+                  count ++;
+              }
+              if(count) {
+                pic[width*y+x].a = alpha / count;
+              } else {
+                pic[width*y+x].a = maskbitmap[y1*maskWidth+x1];
+              }
          }
        }
       }
       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);
@@ -2329,7 +2301,7 @@ 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;
@@ -2534,29 +2506,6 @@ void addGlobalFontDir(const char*dirname)
 #endif
 }
 
-void GFXOutputDev::preparePage(int pdfpage, int outputpage)
-{
-    if(pdfpage < 0)
-       return;
-
-    if(!this->pages) {
-       this->pagebuflen = 1024;
-       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));
-       }
-    }
-    this->pages[pdfpage] = outputpage;
-    if(pdfpage>this->pagepos)
-       this->pagepos = pdfpage;
-}
-
 void GFXOutputDev::beginTransparencyGroup(GfxState *state, double *bbox,
                                      GfxColorSpace *blendingColorSpace,
                                      GBool isolated, GBool knockout,
@@ -2577,6 +2526,7 @@ void GFXOutputDev::beginTransparencyGroup(GfxState *state, double *bbox,
 
     states[statepos].olddevice = this->device;
     this->device = (gfxdevice_t*)rfx_calloc(sizeof(gfxdevice_t));
+    dbg("this->device now %08x (old: %08x)", this->device, states[statepos].olddevice);
 
     gfxdevice_record_init(this->device);
     
@@ -2591,11 +2541,21 @@ void GFXOutputDev::endTransparencyGroup(GfxState *state)
     dbgindent-=2;
     gfxdevice_t*r = this->device;
 
+    dbg("endTransparencyGroup this->device now back to %08x (destroying %08x)", states[statepos].olddevice, this->device);
+    
     this->device = states[statepos].olddevice;
+    if(!this->device) {
+       msg("<fatal> bad state nesting in transparency group- PDF file broken?");
+       /* if these errors occur more often, we should build a seperate
+          transparency group stack, like xpdf/SplashOutputDev.cc does */
+       restoreState(state);
+       this->device = states[statepos].olddevice;
+    }
+    states[statepos].olddevice = 0;
 
     gfxresult_t*recording = r->finish(r);
     
-    dbg("endTransparencyGroup forsoftmask=%d recording=%08x/%08x", states[statepos].createsoftmask, r, recording);
+    dbg("                     forsoftmask=%d recording=%08x/%08x", states[statepos].createsoftmask, r, recording);
     msg("<verbose> endTransparencyGroup forsoftmask=%d recording=%08x/%08x", states[statepos].createsoftmask, r, recording);
 
     if(states[statepos].createsoftmask) {
@@ -2615,9 +2575,9 @@ void GFXOutputDev::paintTransparencyGroup(GfxState *state, double *bbox)
                                "colordodge","colorburn","hardlight","softlight","difference",
                                "exclusion","hue","saturation","color","luminosity"};
 
-    dbg("paintTransparencyGroup blend=%s softmaskon=%d", blendmodes[state->getBlendMode()], states[statepos].softmask);
+    dbg("paintTransparencyGroup blend=%s softmaskon=%d recording=%08x", blendmodes[state->getBlendMode()], states[statepos].softmask, states[statepos].grouprecording);
     msg("<verbose> paintTransparencyGroup blend=%s softmaskon=%d", blendmodes[state->getBlendMode()], states[statepos].softmask);
-   
+
     if(state->getBlendMode() == gfxBlendNormal)
        infofeature("transparency groups");
     else {
@@ -2634,6 +2594,7 @@ void GFXOutputDev::paintTransparencyGroup(GfxState *state, double *bbox)
        if(blendmode == gfxBlendMultiply && alpha>200)
            alpha = 128;
        gfxdevice_t ops;
+       dbg("this->device=%08x, this->device->name=%s\n", this->device, this->device->name);
        gfxdevice_ops_init(&ops, this->device, alpha);
        gfxresult_record_replay(grouprecording, &ops);
        ops.finish(&ops);
@@ -2661,7 +2622,11 @@ void GFXOutputDev::setSoftMask(GfxState *state, double *bbox, GBool alpha, Funct
        infofeature("soft masks");
     else
        warnfeature("soft masks from alpha channel",0);
-    
+   
+    if(states[statepos].olddevice) {
+       msg("<fatal> Internal error: badly balanced softmasks/transparency groups");
+       exit(1);
+    }
     states[statepos].olddevice = this->device;
     this->device = (gfxdevice_t*)rfx_calloc(sizeof(gfxdevice_t));
     gfxdevice_record_init(this->device);