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DEFINITIONS
This source file includes following definitions.
- grow
- findSpace
- addSpace
- createGfxFont
- find_average_glyph_advance
- getGfxFont
- upsideDown
- useDrawChar
- interpretType3Chars
- useTilingPatternFill
- startPage
- endPage
- drawLink
- getMaximumFontSize
- getFontID
- updateFont
- fill
- eoFill
- getFont
- drawChar
- beginType3Char
- type3D0
- type3D1
- endType3Char
- saveState
- restoreState
- drawImageMask
- drawImage
- drawMaskedImage
- drawSoftMaskedImage
- dumpfonts
#include "config.h"
#include "Object.h"
#include "InfoOutputDev.h"
#include "SplashOutputDev.h"
#ifdef HAVE_POPPLER
#include <splash/SplashTypes.h>
#include <splash/SplashPath.h>
#include <splash/SplashFont.h>
#include <splash/SplashFontFile.h>
#else
#include "SplashTypes.h"
#include "SplashPath.h"
#include "SplashFont.h"
#include "SplashFontFile.h"
#endif
#include "GfxState.h"
#include "../log.h"
#include "../types.h"
#include "../q.h"
#include "../gfxfont.h"
#include <math.h>
#include <assert.h>
int config_addspace = 1;
int config_fontquality = 10;
int config_bigchar = 0;
InfoOutputDev::InfoOutputDev(XRef*xref)
{
num_links = 0;
num_jpeg_images = 0;
num_ppm_images = 0;
num_textfields = 0;
num_fonts = 0;
num_polygons= 0;
currentfont = 0;
currentglyph = 0;
id2font = new GHash(1);
SplashColor white = {255,255,255};
splash = new SplashOutputDev(splashModeRGB8,320,0,white,0,0);
splash->startDoc(xref);
}
InfoOutputDev::~InfoOutputDev()
{
GHashIter*i;
id2font->startIter(&i);
GString*key;
FontInfo*fontinfo;
while(id2font->getNext(&i, &key, (void**)&fontinfo)) {
delete fontinfo;
}
id2font->killIter(&i);
delete id2font;id2font=0;
delete splash;splash=0;
}
void FontInfo::grow(int size)
{
if(size >= this->num_glyphs) {
this->glyphs = (GlyphInfo**)realloc(this->glyphs, sizeof(GlyphInfo*)*(size));
this->kerning = (dict_t**)realloc(this->kerning, sizeof(dict_t*)*(size));
memset(&this->glyphs[this->num_glyphs], 0, sizeof(SplashPath*)*((size)-this->num_glyphs));
memset(&this->kerning[this->num_glyphs], 0, sizeof(dict_t*)*((size)-this->num_glyphs));
this->num_glyphs = size;
}
}
FontInfo::FontInfo(char*id)
{
this->id = strdup(id);
this->seen = 0;
this->num_glyphs = 0;
this->glyphs = 0;
this->kerning = 0;
this->splash_font = 0;
this->lastchar = -1;
this->lastx = 0;
this->lasty = 0;
this->gfxfont = 0;
this->space_char = -1;
this->ascender = 0;
this->descender = 0;
}
FontInfo::~FontInfo()
{
if(this->id) {free(this->id);this->id=0;}
this->font = 0;
int t;
for(t=0;t<num_glyphs;t++) {
if(glyphs[t]) {
delete glyphs[t]->path;glyphs[t]->path = 0;
delete glyphs[t];
glyphs[t]=0;
}
}
free(glyphs);glyphs=0;
if(this->gfxfont)
gfxfont_free(this->gfxfont);
if(kerning) {
for(t=0;t<num_glyphs;t++) {
dict_t* d = kerning[t];
if(!d) continue;
DICT_ITERATE_ITEMS(d,void*,key,mtf_t*,m) {
mtf_destroy(m);
}
dict_destroy(d);
}
free(kerning);
kerning=0;
}
}
static int findSpace(gfxfont_t*font)
{
int first_space = -1;
int t;
for(t=0;t<font->num_glyphs;t++) {
gfxglyph_t*g = &font->glyphs[t];
if(GLYPH_IS_SPACE(g)) {
if(g->unicode == 32) {
/* now that we have found a space char, make sure it's unique */
int s;
for(s=0;s<font->num_glyphs;s++) {
if(s!=t && font->glyphs[s].unicode==32)
font->glyphs[s].unicode=0;
}
return t;
}
}
}
return -1;
}
static int addSpace(gfxfont_t*font)
{
/* first, make sure the new space char is the only char that'll use unicode 32 */
int t;
for(t=0;t<font->num_glyphs;t++) {
if(font->glyphs[t].unicode==32)
font->glyphs[t].unicode=0;
}
font->num_glyphs++;
font->glyphs = (gfxglyph_t*)realloc(font->glyphs, sizeof(gfxglyph_t)*font->num_glyphs);
gfxglyph_t*g = &font->glyphs[font->num_glyphs-1];
memset(g, 0, sizeof(*g));
g->unicode = 32;
g->advance = fabs(font->ascent + font->descent)*2 / 3;
if(font->max_unicode > 32)
font->unicode2glyph[32] = font->num_glyphs-1;
#if 0
g->line = gfxline_makerectangle(0, -font->ascent, g->advance, font->descent);
#endif
return font->num_glyphs-1;
}
static gfxfont_t* createGfxFont(FontInfo*src)
{
gfxfont_t*font = (gfxfont_t*)rfx_calloc(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;
font->ascent = fabs(src->ascender);
font->descent = fabs(src->descender);
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;
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);
if(src->glyphs[t]->advance>0) {
glyph->advance = src->glyphs[t]->advance;
} else {
glyph->advance = xmax*scale;
}
if(config_bigchar) {
double max = src->glyphs[t]->advance_max;
if(max>0 && max > glyph->advance) {
glyph->advance = max;
}
}
font->num_glyphs++;
}
}
int kerning_size = 0;
for(t=0;t<src->num_glyphs;t++) {
dict_t* d = src->kerning[t];
if(!d) continue;
DICT_ITERATE_ITEMS(d,void*,key,mtf_t*,m) {
if(m) {
kerning_size++;
}
}
}
font->kerning_size = kerning_size;
font->kerning = (gfxkerning_t*)malloc(sizeof(gfxkerning_t)*kerning_size);
int pos = 0;
for(t=0;t<src->num_glyphs;t++) {
dict_t* d = src->kerning[t];
if(!d) continue;
DICT_ITERATE_ITEMS(d,void*,key,mtf_t*,m) {
if(m) {
font->kerning[pos].c1 = src->glyphs[t]->glyphid;
font->kerning[pos].c2 = src->glyphs[(int)(ptroff_t)key]->glyphid;
font->kerning[pos].advance = (int)(ptroff_t)m->first->key;
pos++;
}
}
}
//int advance = (int)(ptroff_t)m->first->key;
return font;
}
static float find_average_glyph_advance(gfxfont_t*f)
{
if(!f->num_glyphs)
return 0.0;
float*values = (float*)malloc(sizeof(float)*f->num_glyphs);
int t;
for(t=0;t<f->num_glyphs;t++) {
values[t] = f->glyphs[t].advance;
}
float m = medianf(values, f->num_glyphs);
free(values);
return m;
}
gfxfont_t* FontInfo::getGfxFont()
{
if(!this->gfxfont) {
this->gfxfont = createGfxFont(this);
this->gfxfont->id = strdup(this->id);
this->space_char = findSpace(this->gfxfont);
this->average_advance = find_average_glyph_advance(this->gfxfont);
if(this->space_char>=0) {
msg("<debug> Font %s has space char %d (unicode=%d)",
this->id, this->space_char,
this->gfxfont->glyphs[this->space_char].unicode);
} else if(config_addspace) {
this->space_char = addSpace(this->gfxfont);
msg("<debug> Appending space char to font %s, position %d, width %f", this->gfxfont->id, this->space_char, this->gfxfont->glyphs[this->space_char].advance);
}
gfxfont_fix_unicode(this->gfxfont);
}
return this->gfxfont;
}
GBool InfoOutputDev::upsideDown() {return gTrue;}
GBool InfoOutputDev::useDrawChar() {return gTrue;}
GBool InfoOutputDev::interpretType3Chars() {return gTrue;}
GBool InfoOutputDev::useTilingPatternFill() {return gTrue;}
void InfoOutputDev::startPage(int pageNum, GfxState *state, double crop_x1, double crop_y1, double crop_x2, double crop_y2)
{
double x1,y1,x2,y2;
state->transform(crop_x1,crop_y1,&x1,&y1);
state->transform(crop_x2,crop_y2,&x2,&y2);
if(x2<x1) {double x3=x1;x1=x2;x2=x3;}
if(y2<y1) {double y3=y1;y1=y2;y2=y3;}
this->x1 = (int)x1;
this->y1 = (int)y1;
this->x2 = (int)x2;
this->y2 = (int)y2;
msg("<verbose> Generating info structure for page %d", pageNum);
}
void InfoOutputDev::endPage()
{
}
void InfoOutputDev::drawLink(Link *link, Catalog *catalog)
{
num_links++;
}
/* } else if(!strcmp(key,"fontquality")) {
this->config_fontquality = atof(value);
if(this->config_fontquality<=1)
this->config_fontquality=1;
} else if(!strcmp(key,"bigchar")) {
this->config_bigchar = atoi(value);
}
*/
double InfoOutputDev::getMaximumFontSize(char*id)
{
FontInfo*info = (FontInfo*)id2font->lookup(id);
if(!info) {
msg("<error> Unknown font id: %s", id);
return 0.0;
}
return info->max_size;
}
char*getFontID(GfxFont*font)
{
Ref*ref = font->getID();
GString*gstr = font->getName();
char* fname = gstr==0?0:gstr->getCString();
char buf[128];
if(fname==0) {
if(font->getType() == fontType3) {
sprintf(buf, "t3font-%d-%d", ref->num, ref->gen);
} else {
sprintf(buf, "font-%d-%d", ref->num, ref->gen);
}
} else {
sprintf(buf, "%s-%d-%d", fname, ref->num, ref->gen);
}
return strdup(buf);
}
void InfoOutputDev::updateFont(GfxState *state)
{
GfxFont*font = state->getFont();
if(!font) {
currentfont = 0;
return;
}
if(font->getType() == fontType3) {
currentfont = 0;
return;
}
char*id = getFontID(font);
if(currentfont)
currentfont->splash_font = 0;
currentfont = (FontInfo*)id2font->lookup(id);
if(!currentfont) {
currentfont = new FontInfo(id);
currentfont->font = font;
currentfont->max_size = 0;
GString* idStr = new GString(id);
id2font->add(idStr, (void*)currentfont);
num_fonts++;
}
state->setCTM(1.0,0,0,1.0,0,0);
splash->updateCTM(state, 0,0,0,0,0,0);
state->setTextMat(1.0,0,0,1.0,0,0);
state->setFont(font, 1024.0);
splash->doUpdateFont(state);
currentfont->splash_font = splash->getCurrentFont();
if(currentfont->splash_font) {
currentfont->ascender = currentfont->splash_font->ascender;
currentfont->descender = currentfont->splash_font->descender;
} else {
currentfont->ascender = currentfont->descender = 0;
}
free(id);
}
void InfoOutputDev::fill(GfxState *state)
{
num_polygons++;
}
void InfoOutputDev::eoFill(GfxState *state)
{
num_polygons++;
}
FontInfo* InfoOutputDev::getFont(char*id)
{
return (FontInfo*)id2font->lookup(id);
}
void InfoOutputDev::drawChar(GfxState *state, double x, double y,
double dx, double dy,
double originX, double originY,
CharCode code, int nBytes, Unicode *u, int uLen)
{
double m11,m21,m12,m22;
state->getFontTransMat(&m11, &m12, &m21, &m22);
m11 *= state->getHorizScaling();
m21 *= state->getHorizScaling();
double lenx = sqrt(m11*m11 + m12*m12);
double leny = sqrt(m21*m21 + m22*m22);
double len = lenx>leny?lenx:leny;
if(!currentfont || !currentfont->splash_font) {
return; //error
}
if(currentfont && currentfont->max_size < len) {
currentfont->max_size = len;
}
num_textfields++;
currentfont->grow(code+1);
GlyphInfo*g = currentfont->glyphs[code];
if(!g) {
g = currentfont->glyphs[code] = new GlyphInfo();
g->advance_max = 0;
currentfont->splash_font->last_advance = -1;
g->path = currentfont->splash_font->getGlyphPath(code);
g->advance = currentfont->splash_font->last_advance;
g->unicode = 0;
}
if(uLen && ((u[0]>=32 && u[0]<g->unicode) || !g->unicode)) {
g->unicode = u[0];
}
if(currentfont->lastchar>=0 && currentfont->lasty == y) {
double xshift = (x - currentfont->lastx);
if(xshift>=0 && xshift > g->advance_max) {
g->advance_max = xshift;
}
int advance = (int)xshift;
if(advance>=0 && advance<g->advance*4 && advance!=currentfont->lastadvance) {
int c1 = currentfont->lastchar;
int c2 = code;
dict_t*d = currentfont->kerning[c1];
if(!d) {
d = currentfont->kerning[c1] = dict_new2(&int_type);
}
mtf_t*k = (mtf_t*)dict_lookup(d, (void*)(ptroff_t)c2);
if(!k) {
k = mtf_new(&int_type);
dict_put(d, (void*)(ptroff_t)c2, k);
}
mtf_increase(k, (void*)(ptroff_t)advance);
}
}
currentfont->lastx = x;
currentfont->lasty = y;
currentfont->lastchar = code;
currentfont->lastadvance = (int)(g->advance+0.5);
}
GBool InfoOutputDev::beginType3Char(GfxState *state, double x, double y, double dx, double dy, CharCode code, Unicode *u, int uLen)
{
GfxFont*font = state->getFont();
if(!font)
return gTrue;
if(font->getType() != fontType3)
return gTrue;
char*id = getFontID(font);
currentfont = (FontInfo*)id2font->lookup(id);
if(!currentfont) {
currentfont = new FontInfo(id);
currentfont->font = font;
GString* idStr = new GString(id);
id2font->add(idStr, (void*)currentfont);
num_fonts++;
}
currentfont = currentfont;
free(id);
currentfont->grow(code+1);
if(!currentfont->glyphs[code]) {
currentglyph = currentfont->glyphs[code] = new GlyphInfo();
currentglyph->unicode = uLen?u[0]:0;
currentglyph->path = new SplashPath();
currentglyph->x1=0;
currentglyph->y1=0;
currentglyph->x2=dx;
currentglyph->y2=dy;
currentglyph->advance=dx;
return gFalse;
} else {
return gTrue;
}
}
void InfoOutputDev::type3D0(GfxState *state, double wx, double wy)
{
currentglyph->x1=0;
currentglyph->y1=0;
currentglyph->x2=wx;
currentglyph->y2=wy;
}
void InfoOutputDev::type3D1(GfxState *state, double wx, double wy, double llx, double lly, double urx, double ury)
{
if(-lly>currentfont->descender)
currentfont->descender = -lly;
if(ury>currentfont->ascender)
currentfont->ascender = ury;
currentglyph->x1=llx;
currentglyph->y1=lly;
currentglyph->x2=urx;
currentglyph->y2=ury;
}
void InfoOutputDev::endType3Char(GfxState *state)
{
double x1 = currentglyph->x1;
double y1 = currentglyph->y1;
double x2 = currentglyph->x2;
double y2 = currentglyph->y2;
currentglyph->path->moveTo(x1,y1);
currentglyph->path->lineTo(x2,y1);
currentglyph->path->lineTo(x2,y2);
currentglyph->path->lineTo(x1,y2);
currentglyph->path->close();
}
void InfoOutputDev::saveState(GfxState *state)
{
updateAll(state);
}
void InfoOutputDev::restoreState(GfxState *state)
{
updateAll(state);
}
void InfoOutputDev::drawImageMask(GfxState *state, Object *ref, Stream *str,
int width, int height, GBool invert,
GBool inlineImg)
{
if(str->getKind()==strDCT) num_jpeg_images++; else num_ppm_images++;
OutputDev::drawImageMask(state,ref,str,width,height,invert,inlineImg);
}
void InfoOutputDev::drawImage(GfxState *state, Object *ref, Stream *str,
int width, int height, GfxImageColorMap *colorMap,
int *maskColors, GBool inlineImg)
{
if(str->getKind()==strDCT) num_jpeg_images++; else num_ppm_images++;
OutputDev::drawImage(state,ref,str,width,height,colorMap,maskColors,inlineImg);
}
void InfoOutputDev::drawMaskedImage(GfxState *state, Object *ref, Stream *str,
int width, int height,
GfxImageColorMap *colorMap,
Stream *maskStr,
int maskWidth, int maskHeight,
GBool maskInvert)
{
if(str->getKind()==strDCT) num_jpeg_images++; else num_ppm_images++;
OutputDev::drawMaskedImage(state,ref,str,width,height,colorMap,maskStr,maskWidth,maskHeight,maskInvert);
}
void InfoOutputDev::drawSoftMaskedImage(GfxState *state, Object *ref, Stream *str,
int width, int height,
GfxImageColorMap *colorMap,
Stream *maskStr,
int maskWidth, int maskHeight,
GfxImageColorMap *maskColorMap)
{
if(str->getKind()==strDCT) num_jpeg_images++; else num_ppm_images++;
OutputDev::drawSoftMaskedImage(state,ref,str,width,height,colorMap,maskStr,maskWidth,maskHeight,maskColorMap);
}
void InfoOutputDev::dumpfonts(gfxdevice_t*dev)
{
GHashIter*i;
GString*key;
FontInfo*font;
id2font->startIter(&i);
while(id2font->getNext(&i, &key, (void**)&font)) {
dev->addfont(dev, font->getGfxFont());
}
}