Example #1
0
void
gs_to_ps (url doc, url ps, bool landscape, double paper_h, double paper_w) {
  if (DEBUG_CONVERT) debug_convert << "gs_to_ps"<<LF;
  string cmd= gs_prefix ();
  cmd << "-dQUIET -dNOPAUSE -dBATCH -dSAFER -sDEVICE=ps2write ";
  if (landscape)
    cmd << "-dDEVICEWIDTHPOINTS=" << as_string ((int) (28.36*paper_h+ 0.5))
      << " -dDEVICEHEIGHTPOINTS=" << as_string ((int) (28.36*paper_w+ 0.5));
  else
    cmd << "-dDEVICEWIDTHPOINTS=" << as_string ((int) (28.36*paper_w+ 0.5))
      << " -dDEVICEHEIGHTPOINTS=" << as_string ((int) (28.36*paper_h+ 0.5));

  cmd << " -sOutputFile=" << sys_concretize (ps) << " ";
  cmd << sys_concretize (doc);
  cmd << " -c \"[ /Title (" << as_string (tail(ps)) << ") /DOCINFO pdfmark\" ";

  // NOTE: when converting from pdf to ps the title of the document is 
  // incorrectly referring to the name of the temporary file
  // so we add some PS code to override the PS document title with
  // the name of the PS file.

  system (cmd);
  if (DEBUG_CONVERT) debug_convert << cmd <<LF
    <<"ps generated? "<< exists(ps)<<LF;
}
void
gs_to_png (url image, url png, int w, int h) {
  if (use_converts (image)) {
    string cmd= "convert ";
    cmd << "-density 300x300 -geometry " << as_string (w) << "x" << as_string (h) << "! ";  
    cmd << sys_concretize (image) << " ";
    cmd << sys_concretize (png);
    system (cmd);
  }
  else {
    string cmd= gs_prefix ();
    cmd << "-dQUIET -dNOPAUSE -dBATCH -dSAFER ";
    cmd << "-sDEVICE=png16m -dGraphicsAlphaBits=4 -dTextAlphaBits=4 -dEPSCrop ";
    cmd << "-g" << as_string (w) << "x" << as_string (h) << " ";
    int bbw, bbh;
    int rw, rh;
    gs_image_size (image, bbw, bbh);
    rw= (w*72-1)/bbw+1;
    rh= (h*72-1)/bbh+1;
    cmd << "-r" << as_string (rw) << "x" << as_string (rh) << " ";  
    cmd << "-sOutputFile=" << sys_concretize (png) << " ";
    cmd << sys_concretize (image);
    system (cmd);
  }
}
Example #3
0
// This conversion is appropriate for eps images
// (originally implemented in pdf_image_rep::flush)
void  
gs_to_pdf (url image, url pdf, int w, int h) {
  string cmd;
  if (DEBUG_CONVERT) debug_convert << "(eps) gs_to_pdf"<<LF;
  string s= suffix (image);    
  // take care of properly handling the bounding box
  // the resulting pdf image will always start at 0,0.

  int bx1, by1, bx2, by2; // bounding box
  ps_bounding_box(image, bx1, by1, bx2, by2);
  double scale_x = w/((double)(bx2-bx1));
  double scale_y = h/((double)(by2-by1));

  cmd= gs_prefix();
  cmd << " -dQUIET -dNOPAUSE -dBATCH -dSAFER -sDEVICE=pdfwrite ";
  cmd << "-dAutoRotatePages=/None ";
  cmd << "-dCompatibilityLevel=" << pdf_version () << " ";
  cmd << " -sOutputFile=" << sys_concretize(pdf) << " ";
  cmd << " -c \" << /PageSize [ " << as_string(bx2-bx1) << " " << as_string(by2-by1)
    << " ] >> setpagedevice gsave  "
    << as_string(-bx1) << " " << as_string(-by1) << " translate "
    << as_string(scale_x) << " " << as_string(scale_y) << " scale \"";
  cmd << " -f " << sys_concretize (image);
  cmd << " -c \" grestore \"  ";
  // debug_convert << cmd << LF;
  system(cmd);
  if (DEBUG_CONVERT)
    debug_convert << cmd << LF << "pdf generated? " << exists(pdf) << LF;
}
Example #4
0
void
tm_gs (url image) {
  string cmd= gs_prefix ();
  cmd << "-q -sDEVICE=x11alpha -dBATCH -dNOPAUSE -dSAFER -dNOEPS ";
  cmd << sys_concretize (image);
  system (cmd);
}
Example #5
0
bool
gs_to_png (url image, url png, int w, int h) { //Achtung! w,h in pixels
  string cmd;
  if (DEBUG_CONVERT) debug_convert << "gs_to_png using gs"<<LF;
  cmd= gs_prefix ();
  cmd << "-dQUIET -dNOPAUSE -dBATCH -dSAFER ";
  cmd << "-sDEVICE=png16m -dGraphicsAlphaBits=4 -dTextAlphaBits=4 ";
  cmd << "-g" << as_string (w) << "x" << as_string (h) << " ";
  cmd << "-sOutputFile=" << sys_concretize (png) << " ";
  int bbw, bbh;
  int rw, rh;
  int bx1, by1, bx2, by2;
  if (suffix(image) == "pdf") 
    image_size (image, bbw, bbh);
    //don't call gs_PDFimage_size 
    //in order to benefit from caching
  else {
    ps_bounding_box (image, bx1, by1, bx2, by2); //same comment
    bbw=bx2-bx1;
    bbh=by2-by1;
  }
  rw=(w*72)/bbw;
  rh=(h*72)/bbh;
  cmd << "-r" << as_string (rw) << "x" << as_string (rh) << " ";  
  
  if (DEBUG_CONVERT) debug_convert << "w="<<w<<" h="<<h<<LF
      << "bbw="<<bbw<<" bbh="<<bbh<<LF
      <<" res ="<<rw<<" * "<<rh <<LF;
  
  if (suffix(image) == "pdf") {
    cmd << "-dUseCropBox "; // old gs versions (<9.0 ?) fail if CropBox not explicitly defined
    cmd << sys_concretize (image);
  }
  else {
    //don't use -dEPSCrop which works incorrectly if (bx1 != 0 || by1 != 0)
    cmd << "-c \" "<< as_string (-bx1) << " "<< as_string (-by1) <<" translate gsave \"  -f "
            << sys_concretize (image) << " -c \" grestore \"";    
  }
  string ans= eval_system (cmd);
  if (DEBUG_CONVERT) debug_convert << cmd <<LF
    <<"answer :"<<ans <<LF;
  if (! exists(png)) {
    convert_error << "gs_to_png failed for "<< image <<LF;
    return false;
  }
  return true;
}
void
gs_to_eps (url image, url eps) {
  if (use_converts (image)) {
    string cmd= "convert ";
    cmd << sys_concretize (image) << " ";
    cmd << sys_concretize (eps);
    system (cmd);
  }
  else {
    string cmd= gs_prefix ();
    cmd << "-dQUIET -dNOPAUSE -dBATCH -dSAFER ";
    cmd << "-sDEVICE=epswrite -dEPSCrop ";
    cmd << "-sOutputFile=" << sys_concretize (eps) << " ";
    cmd << sys_concretize (image);
    system (cmd);
  }
}
void
gs_to_pdf (url doc, url pdf, bool landscape, double paper_h, double paper_w) {
  string cmd= gs_prefix ();
  cmd << "-dQUIET -dNOPAUSE -dBATCH -dSAFER -sDEVICE=pdfwrite ";
  if (landscape)
    cmd << "-dDEVICEWIDTHPOINTS=" << as_string ((int) (28.36*paper_h+ 0.5))
      << " -dDEVICEHEIGHTPOINTS=" << as_string ((int) (28.36*paper_w+ 0.5));
  else
    cmd << "-dDEVICEWIDTHPOINTS=" << as_string ((int) (28.36*paper_w+ 0.5))
      << " -dDEVICEHEIGHTPOINTS=" << as_string ((int) (28.36*paper_h+ 0.5));

  cmd << " -sOutputFile=" << sys_concretize (pdf) << " ";
  cmd << sys_concretize (doc);
  cmd << " -c \"[ /Title (" << as_string (tail(pdf)) << ") /DOCINFO pdfmark\" ";

  // NOTE: when converting from ps to pdf the title of the document is 
  // incorrectly referring to the name of the temporary file
  // so we add some PS code to override the PDF document title with
  // the name of the PDF file.

  system (cmd);
}
Example #8
0
void
gs_to_eps (url image, url eps) { //this should be used mostly for pdf->eps conversion.
  string cmd;
  int bx1, by1, bx2, by2; // bounding box
  if (DEBUG_CONVERT) debug_convert << "gs_to_eps"<<LF;
  cmd= gs_prefix ();
  cmd << "-dQUIET -dNOPAUSE -dBATCH -dSAFER ";
  cmd << "-sDEVICE="<<eps_device ();
  cmd << " -sOutputFile=" << sys_concretize (eps) << " ";
  if (suffix(image) == "pdf") {
    image_size (image, bx2, by2);
    bx1=by1=0;
    cmd << "-dUseCropBox "
      << " -dDEVICEWIDTHPOINTS=" << as_string (bx2)
      << " -dDEVICEHEIGHTPOINTS=" << as_string (by2)<<" "
      << sys_concretize (image);
  }  
  else {
    ps_bounding_box (image, bx1, by1, bx2, by2);
    cmd << " -dDEVICEWIDTHPOINTS=" << as_string (bx2-bx1)
      << " -dDEVICEHEIGHTPOINTS=" << as_string (by2-by1)<<" ";
    //don't use -dEPSCrop which works incorrectly if (bx1 != 0 || by1 != 0)
    cmd << "-c \" "<< as_string (-bx1) << " " << as_string (-by1) 
      << " translate gsave \" "
      << sys_concretize (image)
      << " -c \" grestore \"";     
  }
  string ans= eval_system (cmd);
  if (DEBUG_CONVERT) debug_convert << cmd <<LF
    <<"answer :"<<ans <<LF
    <<"eps generated? "<< exists(eps)<<LF;
  // eps(2)write and bbox devices do a "smart" job of finding the boundingbox on their own,
  // possibly changing the original margins/aspect ratio defined by the pdf CropBox|MediaBox
  // here were restore the original size.
  gs_fix_bbox (eps, 0, 0, bx2-bx1, by2-by1);
}
string
gs_prefix () {
#if defined (__MINGW__) || defined (__MINGW32__)
  static string cmd; // no need to resolve each time
  if (cmd == "") {
    url gs= resolve_in_path ("gswin32c");
    if(is_none(gs))
      gs= url_system (get_env ("TEXMACS_PATH")) * "bin" * "gswin32c";
    cmd= sys_concretize (gs) * " ";
  }
  return copy (cmd);
#else
  return "gs ";
#endif
}
Example #10
0
void
gs_image_size (url image, int& w_pt, int& h_pt) {
  string buf;
  bool err= load_string (image, buf, false);
  if (!err && gs_image_size_sub (buf, w_pt, h_pt)) return;
  if (!err) {
    string cmd= gs_prefix ();
    cmd << "-dQUIET -dNOPAUSE -dBATCH -dSAFER -dEPSCrop -sDEVICE=bbox ";
    cmd << sys_concretize (image);
    buf= eval_system (cmd);
  }
  if (!err && gs_image_size_sub (buf, w_pt, h_pt)) return;
  convert_error << "Cannot read image file '" << image << "'"
                << " in gs_image_size" << LF;
  w_pt= 0; h_pt= 0;
}
Example #11
0
void
gs_image_size (url image, int& w_pt, int& h_pt) {
  bool ok;
  if (suffix (image) == "pdf") 
    ok= gs_PDFimage_size (image, w_pt, h_pt);
  else {
    if (DEBUG_CONVERT) debug_convert << "gs eps image size :"<<LF;
    int x1,y1,x2,y2;
    string buf;
    ok= !load_string (image, buf, false);
    if (ok) {
      //try finding Bounding box in file:
      ok= ps_read_bbox (buf, x1, y1, x2, y2);
      if (!ok) {
        // bbox not found ask gs to compute one :
        string cmd= gs_prefix ();
        cmd << "-dQUIET -dNOPAUSE -dBATCH -dSAFER -sDEVICE=bbox ";
        //Note: bbox device does a "smart" job of finding the cropbox on its own removing blank margins (*even* on eps files)
        //this is ok if we are reading a ps page
        // real eps pages with proper bounding boxes have been recognized before this and will have their BoundingBox respected
        cmd << sys_concretize (image);
        buf= eval_system (cmd);
        if (DEBUG_CONVERT) debug_convert << "gs cmd :"<<cmd<<LF
          <<"answer :"<< buf ;
        ok= ps_read_bbox (buf, x1, y1, x2, y2);
      }
      if (ok) {
        w_pt= x2-x1;
        h_pt= y2-y1;
        set_imgbox_cache(image->t, w_pt, h_pt, x1, y1);
      }
    }
  }
  if (!ok) { 
  convert_error << "Cannot read image file '" << image << "'"
                << " in gs_image_size" << LF;
  w_pt= 0; h_pt= 0;
  }
}
Example #12
0
inline void system (string which, url u1, const char* sep, url u2) {
  system (which * " " * sys_concretize (u1) * " " * sep *
	          " " * sys_concretize (u2)); }
Example #13
0
inline void system (string which, url u1, const char* post) {
  system (which * " " * sys_concretize (u1) * " " * post); }
Example #14
0
inline void system (string which, url u1, url u2) {
  system (which * " " * sys_concretize (u1) * " " * sys_concretize (u2)); }
Example #15
0
bool
gs_PDFimage_size (url image, int& w_pt, int& h_pt) {
  if (DEBUG_CONVERT) debug_convert << "gs PDF image size :"<<LF;
  string buf;
  string cmd= gs_prefix ();
  cmd << "-dNODISPLAY -q -sFile=";
  cmd << sys_concretize (image);
  cmd <<" "<<sys_concretize ("$TEXMACS_PATH/misc/convert/pdf_info.ps");
  buf= eval_system (cmd);
  if (DEBUG_CONVERT) debug_convert << "gs cmd :"<<cmd<<LF
    <<"answer :"<< buf ;
  //if CropBox is defined, then use it, else Mediabox
  string type="CropBox";
  int pos= search_forwards ("CropBox: [", buf);
  if (pos < 0) {
    type="MediaBox";
    pos= search_forwards ("MediaBox: [", buf);
      if (pos < 0) {
      if (DEBUG_CONVERT) debug_convert << "CropBox|MediaBox not found"<<LF;
        return false;
    } 
  }
  bool ok= read (buf, pos, type*": [");
  double X1, Y1, X2, Y2;
  int x1, y1, x2, y2;
  skip_spaces (buf, pos);
  ok= read_double (buf, pos, X1) && ok;
  x1= (int) floor (X1);
  skip_spaces (buf, pos);
  ok= read_double (buf, pos, Y1) && ok;
  y1= (int) floor (Y1);
  skip_spaces (buf, pos);
  ok= read_double (buf, pos, X2) && ok;
  x2= (int) ceil (X2);
  skip_spaces (buf, pos);
  ok= read_double (buf, pos, Y2) && ok;
  y2= (int) ceil (Y2);
  if (!ok) {
    if (DEBUG_CONVERT) debug_convert << "box dims not found"<<LF;
    return false;
  }
  w_pt= x2-x1;
  h_pt= y2-y1;
  pos= search_forwards ("Rotate =", buf);
  ok= read (buf, pos, "Rotate =");
  int rot;
  if (ok) {
    skip_spaces (buf, pos);
    ok = read_int  (buf, pos, rot) ;
    if (ok) {
      rot = rot%360;
      if (rot < 0) rot +=360;
      if ((rot % 180) == 90 ) {//the image is rotated : swap axes lengths
        if (DEBUG_CONVERT) debug_convert << "Rotate ="<<rot<<LF;
        h_pt= x2-x1;
        w_pt= y2-y1;
      }
    } 
    else {
      if (DEBUG_CONVERT) debug_convert << "Rotate not found"<<LF;
      return false;
    }
  }
  if (DEBUG_CONVERT) debug_convert << type<< " size ="<<w_pt<<" x "<< h_pt <<LF;
  return true;
}