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| Source at commit 1322 created 12 years 8 months ago. By meklort, Add doxygen to utils folder | |
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| 1 | /******************************************************************************␊ |
| 2 | * ␊ |
| 3 | *␊ |
| 4 | * Copyright (C) 1997-2011 by Dimitri van Heesch.␊ |
| 5 | *␊ |
| 6 | * Permission to use, copy, modify, and distribute this software and its␊ |
| 7 | * documentation under the terms of the GNU General Public License is hereby ␊ |
| 8 | * granted. No representations are made about the suitability of this software ␊ |
| 9 | * for any purpose. It is provided "as is" without express or implied warranty.␊ |
| 10 | * See the GNU General Public License for more details.␊ |
| 11 | *␊ |
| 12 | * Documents produced by Doxygen are derivative works derived from the␊ |
| 13 | * input used in their production; they are not affected by this license.␊ |
| 14 | *␊ |
| 15 | */␊ |
| 16 | ␊ |
| 17 | #include <stdlib.h>␊ |
| 18 | #include <unistd.h>␊ |
| 19 | ␊ |
| 20 | #include "qtbc.h"␊ |
| 21 | #include <qfile.h>␊ |
| 22 | #include <qfileinfo.h>␊ |
| 23 | #include <qtextstream.h>␊ |
| 24 | #include <qdir.h>␊ |
| 25 | ␊ |
| 26 | #include "formula.h"␊ |
| 27 | #include "image.h"␊ |
| 28 | #include "util.h"␊ |
| 29 | #include "message.h"␊ |
| 30 | #include "config.h"␊ |
| 31 | #include "portable.h"␊ |
| 32 | #include "index.h"␊ |
| 33 | #include "doxygen.h"␊ |
| 34 | #include "ftextstream.h"␊ |
| 35 | ␊ |
| 36 | Formula::Formula(const char *text)␊ |
| 37 | {␊ |
| 38 | static int count=0;␊ |
| 39 | number = count++;␊ |
| 40 | form=text;␊ |
| 41 | }␊ |
| 42 | ␊ |
| 43 | Formula::~Formula()␊ |
| 44 | {␊ |
| 45 | }␊ |
| 46 | ␊ |
| 47 | int Formula::getId()␊ |
| 48 | {␊ |
| 49 | return number;␊ |
| 50 | }␊ |
| 51 | ␊ |
| 52 | void FormulaList::generateBitmaps(const char *path)␊ |
| 53 | {␊ |
| 54 | int x1,y1,x2,y2;␊ |
| 55 | QDir d(path);␊ |
| 56 | // store the original directory␊ |
| 57 | if (!d.exists()) { err("error: Output dir %s does not exist!\n",path); exit(1); }␊ |
| 58 | QCString oldDir = convertToQCString(QDir::currentDirPath());␊ |
| 59 | // go to the html output directory (i.e. path)␊ |
| 60 | QDir::setCurrent(d.absPath());␊ |
| 61 | QDir thisDir;␊ |
| 62 | // generate a latex file containing one formula per page.␊ |
| 63 | QCString texName="_formulas.tex";␊ |
| 64 | QList<int> pagesToGenerate;␊ |
| 65 | pagesToGenerate.setAutoDelete(TRUE);␊ |
| 66 | FormulaListIterator fli(*this);␊ |
| 67 | Formula *formula;␊ |
| 68 | QFile f(texName);␊ |
| 69 | bool formulaError=FALSE;␊ |
| 70 | if (f.open(IO_WriteOnly))␊ |
| 71 | {␊ |
| 72 | FTextStream t(&f);␊ |
| 73 | if (Config_getBool("LATEX_BATCHMODE")) t << "\\batchmode" << endl;␊ |
| 74 | t << "\\documentclass{article}" << endl;␊ |
| 75 | t << "\\usepackage{epsfig}" << endl; // for those who want to include images␊ |
| 76 | const char *s=Config_getList("EXTRA_PACKAGES").first();␊ |
| 77 | while (s)␊ |
| 78 | {␊ |
| 79 | t << "\\usepackage{" << s << "}\n";␊ |
| 80 | s=Config_getList("EXTRA_PACKAGES").next();␊ |
| 81 | }␊ |
| 82 | t << "\\pagestyle{empty}" << endl; ␊ |
| 83 | t << "\\begin{document}" << endl;␊ |
| 84 | int page=0;␊ |
| 85 | for (fli.toFirst();(formula=fli.current());++fli)␊ |
| 86 | {␊ |
| 87 | QCString resultName;␊ |
| 88 | resultName.sprintf("form_%d.png",formula->getId());␊ |
| 89 | // only formulas for which no image exists are generated␊ |
| 90 | QFileInfo fi(resultName);␊ |
| 91 | if (!fi.exists())␊ |
| 92 | {␊ |
| 93 | // we force a pagebreak after each formula␊ |
| 94 | t << formula->getFormulaText() << endl << "\\pagebreak\n\n";␊ |
| 95 | pagesToGenerate.append(new int(page));␊ |
| 96 | }␊ |
| 97 | Doxygen::indexList.addImageFile(resultName);␊ |
| 98 | page++;␊ |
| 99 | }␊ |
| 100 | t << "\\end{document}" << endl;␊ |
| 101 | f.close();␊ |
| 102 | }␊ |
| 103 | if (pagesToGenerate.count()>0) // there are new formulas␊ |
| 104 | {␊ |
| 105 | //printf("Running latex...\n");␊ |
| 106 | //system("latex _formulas.tex </dev/null >/dev/null");␊ |
| 107 | QCString latexCmd = Config_getString("LATEX_CMD_NAME");␊ |
| 108 | if (latexCmd.isEmpty()) latexCmd="latex";␊ |
| 109 | portable_sysTimerStart();␊ |
| 110 | if (portable_system(latexCmd,"_formulas.tex")!=0)␊ |
| 111 | {␊ |
| 112 | err("Problems running latex. Check your installation or look "␊ |
| 113 | "for typos in _formulas.tex and check _formulas.log!\n");␊ |
| 114 | formulaError=TRUE;␊ |
| 115 | //return;␊ |
| 116 | }␊ |
| 117 | portable_sysTimerStop();␊ |
| 118 | //printf("Running dvips...\n");␊ |
| 119 | QListIterator<int> pli(pagesToGenerate);␊ |
| 120 | int *pagePtr;␊ |
| 121 | int pageIndex=1;␊ |
| 122 | for (;(pagePtr=pli.current());++pli,++pageIndex)␊ |
| 123 | {␊ |
| 124 | int pageNum=*pagePtr;␊ |
| 125 | msg("Generating image form_%d.png for formula\n",pageNum);␊ |
| 126 | char dviArgs[4096];␊ |
| 127 | QCString formBase;␊ |
| 128 | formBase.sprintf("_form%d",pageNum);␊ |
| 129 | // run dvips to convert the page with number pageIndex to an␊ |
| 130 | // encapsulated postscript.␊ |
| 131 | sprintf(dviArgs,"-q -D 600 -E -n 1 -p %d -o %s.eps _formulas.dvi",␊ |
| 132 | pageIndex,formBase.data());␊ |
| 133 | portable_sysTimerStart();␊ |
| 134 | if (portable_system("dvips",dviArgs)!=0)␊ |
| 135 | {␊ |
| 136 | err("Problems running dvips. Check your installation!\n");␊ |
| 137 | portable_sysTimerStop();␊ |
| 138 | return;␊ |
| 139 | }␊ |
| 140 | portable_sysTimerStop();␊ |
| 141 | // now we read the generated postscript file to extract the bounding box␊ |
| 142 | QFileInfo fi(formBase+".eps");␊ |
| 143 | if (fi.exists())␊ |
| 144 | {␊ |
| 145 | QCString eps = fileToString(formBase+".eps");␊ |
| 146 | int i=eps.find("%%BoundingBox:");␊ |
| 147 | if (i!=-1)␊ |
| 148 | {␊ |
| 149 | sscanf(eps.data()+i,"%%%%BoundingBox:%d %d %d %d",&x1,&y1,&x2,&y2);␊ |
| 150 | }␊ |
| 151 | else␊ |
| 152 | {␊ |
| 153 | err("error: Couldn't extract bounding box!\n");␊ |
| 154 | }␊ |
| 155 | } ␊ |
| 156 | // next we generate a postscript file which contains the eps␊ |
| 157 | // and displays it in the right colors and the right bounding box␊ |
| 158 | f.setName(formBase+".ps");␊ |
| 159 | if (f.open(IO_WriteOnly))␊ |
| 160 | {␊ |
| 161 | FTextStream t(&f);␊ |
| 162 | t << "1 1 1 setrgbcolor" << endl; // anti-alias to white background␊ |
| 163 | t << "newpath" << endl;␊ |
| 164 | t << "-1 -1 moveto" << endl;␊ |
| 165 | t << (x2-x1+2) << " -1 lineto" << endl;␊ |
| 166 | t << (x2-x1+2) << " " << (y2-y1+2) << " lineto" << endl;␊ |
| 167 | t << "-1 " << (y2-y1+2) << " lineto" <<endl;␊ |
| 168 | t << "closepath" << endl;␊ |
| 169 | t << "fill" << endl;␊ |
| 170 | t << -x1 << " " << -y1 << " translate" << endl;␊ |
| 171 | t << "0 0 0 setrgbcolor" << endl;␊ |
| 172 | t << "(" << formBase << ".eps) run" << endl;␊ |
| 173 | f.close();␊ |
| 174 | }␊ |
| 175 | // scale the image so that it is four times larger than needed.␊ |
| 176 | // and the sizes are a multiple of four.␊ |
| 177 | double scaleFactor = 16.0/3.0; ␊ |
| 178 | int zoomFactor = Config_getInt("FORMULA_FONTSIZE");␊ |
| 179 | if (zoomFactor<8 || zoomFactor>50) zoomFactor=10;␊ |
| 180 | scaleFactor *= zoomFactor/10.0;␊ |
| 181 | int gx = (((int)((x2-x1)*scaleFactor))+3)&~1;␊ |
| 182 | int gy = (((int)((y2-y1)*scaleFactor))+3)&~1;␊ |
| 183 | // Then we run ghostscript to convert the postscript to a pixmap␊ |
| 184 | // The pixmap is a truecolor image, where only black and white are␊ |
| 185 | // used. ␊ |
| 186 | ␊ |
| 187 | char gsArgs[4096];␊ |
| 188 | sprintf(gsArgs,"-q -g%dx%d -r%dx%dx -sDEVICE=ppmraw "␊ |
| 189 | "-sOutputFile=%s.pnm -dNOPAUSE -dBATCH -- %s.ps",␊ |
| 190 | gx,gy,(int)(scaleFactor*72),(int)(scaleFactor*72),␊ |
| 191 | formBase.data(),formBase.data()␊ |
| 192 | );␊ |
| 193 | portable_sysTimerStart();␊ |
| 194 | if (portable_system(portable_ghostScriptCommand(),gsArgs)!=0)␊ |
| 195 | {␊ |
| 196 | err("Problem running ghostscript %s %s. Check your installation!\n",portable_ghostScriptCommand(),gsArgs);␊ |
| 197 | portable_sysTimerStop();␊ |
| 198 | return;␊ |
| 199 | }␊ |
| 200 | portable_sysTimerStop();␊ |
| 201 | f.setName(formBase+".pnm");␊ |
| 202 | uint imageX=0,imageY=0;␊ |
| 203 | // we read the generated image again, to obtain the pixel data.␊ |
| 204 | if (f.open(IO_ReadOnly))␊ |
| 205 | {␊ |
| 206 | QTextStream t(&f);␊ |
| 207 | QCString s;␊ |
| 208 | if (!t.eof())␊ |
| 209 | s=t.readLine();␊ |
| 210 | if (s.length()<2 || s.left(2)!="P6")␊ |
| 211 | err("error: ghostscript produced an illegal image format!");␊ |
| 212 | else␊ |
| 213 | {␊ |
| 214 | // assume the size if after the first line that does not start with␊ |
| 215 | // # excluding the first line of the file.␊ |
| 216 | while (!t.eof() && (s=t.readLine()) && !s.isEmpty() && s.at(0)=='#') { }␊ |
| 217 | sscanf(s,"%d %d",&imageX,&imageY);␊ |
| 218 | }␊ |
| 219 | if (imageX>0 && imageY>0)␊ |
| 220 | {␊ |
| 221 | //printf("Converting image...\n");␊ |
| 222 | char *data = new char[imageX*imageY*3]; // rgb 8:8:8 format␊ |
| 223 | uint i,x,y,ix,iy;␊ |
| 224 | f.readBlock(data,imageX*imageY*3);␊ |
| 225 | Image srcImage(imageX,imageY),␊ |
| 226 | filteredImage(imageX,imageY),␊ |
| 227 | dstImage(imageX/4,imageY/4);␊ |
| 228 | uchar *ps=srcImage.getData();␊ |
| 229 | // convert image to black (1) and white (0) index.␊ |
| 230 | for (i=0;i<imageX*imageY;i++) *ps++= (data[i*3]==0 ? 1 : 0);␊ |
| 231 | // apply a simple box filter to the image ␊ |
| 232 | static int filterMask[]={1,2,1,2,8,2,1,2,1};␊ |
| 233 | for (y=0;y<srcImage.getHeight();y++)␊ |
| 234 | {␊ |
| 235 | for (x=0;x<srcImage.getWidth();x++)␊ |
| 236 | {␊ |
| 237 | int s=0;␊ |
| 238 | for (iy=0;iy<2;iy++)␊ |
| 239 | {␊ |
| 240 | for (ix=0;ix<2;ix++)␊ |
| 241 | {␊ |
| 242 | s+=srcImage.getPixel(x+ix-1,y+iy-1)*filterMask[iy*3+ix];␊ |
| 243 | }␊ |
| 244 | }␊ |
| 245 | filteredImage.setPixel(x,y,s);␊ |
| 246 | }␊ |
| 247 | }␊ |
| 248 | // down-sample the image to 1/16th of the area using 16 gray scale␊ |
| 249 | // colors.␊ |
| 250 | // TODO: optimize this code.␊ |
| 251 | for (y=0;y<dstImage.getHeight();y++)␊ |
| 252 | {␊ |
| 253 | for (x=0;x<dstImage.getWidth();x++)␊ |
| 254 | {␊ |
| 255 | int xp=x<<2;␊ |
| 256 | int yp=y<<2;␊ |
| 257 | int c=filteredImage.getPixel(xp+0,yp+0)+␊ |
| 258 | filteredImage.getPixel(xp+1,yp+0)+␊ |
| 259 | filteredImage.getPixel(xp+2,yp+0)+␊ |
| 260 | filteredImage.getPixel(xp+3,yp+0)+␊ |
| 261 | filteredImage.getPixel(xp+0,yp+1)+␊ |
| 262 | filteredImage.getPixel(xp+1,yp+1)+␊ |
| 263 | filteredImage.getPixel(xp+2,yp+1)+␊ |
| 264 | filteredImage.getPixel(xp+3,yp+1)+␊ |
| 265 | filteredImage.getPixel(xp+0,yp+2)+␊ |
| 266 | filteredImage.getPixel(xp+1,yp+2)+␊ |
| 267 | filteredImage.getPixel(xp+2,yp+2)+␊ |
| 268 | filteredImage.getPixel(xp+3,yp+2)+␊ |
| 269 | filteredImage.getPixel(xp+0,yp+3)+␊ |
| 270 | filteredImage.getPixel(xp+1,yp+3)+␊ |
| 271 | filteredImage.getPixel(xp+2,yp+3)+␊ |
| 272 | filteredImage.getPixel(xp+3,yp+3);␊ |
| 273 | // here we scale and clip the color value so the␊ |
| 274 | // resulting image has a reasonable contrast␊ |
| 275 | dstImage.setPixel(x,y,QMIN(15,(c*15)/(16*10)));␊ |
| 276 | }␊ |
| 277 | }␊ |
| 278 | // save the result as a bitmap␊ |
| 279 | QCString resultName;␊ |
| 280 | resultName.sprintf("form_%d.png",pageNum);␊ |
| 281 | // the option parameter 1 is used here as a temporary hack␊ |
| 282 | // to select the right color palette! ␊ |
| 283 | dstImage.save(resultName,1);␊ |
| 284 | delete[] data;␊ |
| 285 | }␊ |
| 286 | f.close();␊ |
| 287 | } ␊ |
| 288 | // remove intermediate image files␊ |
| 289 | thisDir.remove(formBase+".eps");␊ |
| 290 | thisDir.remove(formBase+".pnm");␊ |
| 291 | thisDir.remove(formBase+".ps");␊ |
| 292 | }␊ |
| 293 | // remove intermediate files produced by latex␊ |
| 294 | thisDir.remove("_formulas.dvi");␊ |
| 295 | if (!formulaError) thisDir.remove("_formulas.log"); // keep file in case of errors␊ |
| 296 | thisDir.remove("_formulas.aux");␊ |
| 297 | }␊ |
| 298 | // remove the latex file itself␊ |
| 299 | if (!formulaError) thisDir.remove("_formulas.tex");␊ |
| 300 | // write/update the formula repository so we know what text the ␊ |
| 301 | // generated images represent (we use this next time to avoid regeneration␊ |
| 302 | // of the images, and to avoid forcing the user to delete all images in order␊ |
| 303 | // to let a browser refresh the images).␊ |
| 304 | f.setName("formula.repository");␊ |
| 305 | if (f.open(IO_WriteOnly))␊ |
| 306 | {␊ |
| 307 | FTextStream t(&f);␊ |
| 308 | for (fli.toFirst();(formula=fli.current());++fli)␊ |
| 309 | {␊ |
| 310 | t << "\\form#" << formula->getId() << ":" << formula->getFormulaText() << endl;␊ |
| 311 | }␊ |
| 312 | f.close();␊ |
| 313 | }␊ |
| 314 | // reset the directory to the original location.␊ |
| 315 | QDir::setCurrent(oldDir);␊ |
| 316 | }␊ |
| 317 | ␊ |
| 318 | ␊ |
| 319 | #ifdef FORMULA_TEST␊ |
| 320 | int main()␊ |
| 321 | {␊ |
| 322 | FormulaList fl;␊ |
| 323 | fl.append(new Formula("$x^2$"));␊ |
| 324 | fl.append(new Formula("$y^2$"));␊ |
| 325 | fl.append(new Formula("$\\sqrt{x_0^2+x_1^2+x_2^2}$"));␊ |
| 326 | fl.generateBitmaps("dest");␊ |
| 327 | return 0;␊ |
| 328 | }␊ |
| 329 | #endif␊ |
| 330 | |
