src/xpm/CrDatFrI.c

   1 /*
   2  * Copyright (C) 1989-95 GROUPE BULL
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a copy
   5  * of this software and associated documentation files (the "Software"), to
   6  * deal in the Software without restriction, including without limitation the
   7  * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
   8  * sell copies of the Software, and to permit persons to whom the Software is
   9  * furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  17  * GROUPE BULL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  18  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  19  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  20  *
  21  * Except as contained in this notice, the name of GROUPE BULL shall not be
  22  * used in advertising or otherwise to promote the sale, use or other dealings
  23  * in this Software without prior written authorization from GROUPE BULL.
  24  */
  25
  26 /*****************************************************************************\
  27 *  CrDataFI.c:                                                                *
  28 *                                                                             *
  29 *  XPM library                                                                *
  30 *  Scan an image and possibly its mask and create an XPM array                *
  31 *                                                                             *
  32 *  Developed by Arnaud Le Hors                                                *
  33 \*****************************************************************************/
  34
  35 #include "XpmI.h"
  36
  37 LFUNC(CreateColors, int, (char **dataptr, unsigned int *data_size,
  38                           XpmColor *colors, unsigned int ncolors,
  39                           unsigned int cpp));
  40
  41 LFUNC(CreatePixels, void, (char **dataptr, unsigned int width,
  42                            unsigned int height, unsigned int cpp,
  43                            unsigned int *pixels, XpmColor *colors));
  44
  45 LFUNC(CountExtensions, void, (XpmExtension *ext, unsigned int num,
  46                               unsigned int *ext_size,
  47                               unsigned int *ext_nlines));
  48
  49 LFUNC(CreateExtensions, void, (char **dataptr, unsigned int offset,
  50                                XpmExtension *ext, unsigned int num,
  51                                unsigned int ext_nlines));
  52
  53 #ifdef __OS2__
  54 /* Visual Age cannot deal with old, non-ansi, code */
  55 int
  56 XpmCreateDataFromImage(
  57   Display*       display
  58 , char***        data_return
  59 , XImage*        image
  60 , XImage*        shapeimage
  61 , XpmAttributes* attributes
  62 )
  63 #else
  64 int
  65 XpmCreateDataFromImage(display, data_return, image, shapeimage, attributes)
  66     Display *display;
  67     char ***data_return;
  68     XImage *image;
  69     XImage *shapeimage;
  70     XpmAttributes *attributes;
  71 #endif
  72 {
  73     XpmImage xpmimage;
  74     XpmInfo info;
  75     int ErrorStatus;
  76
  77     /* initialize return value */
  78     if (data_return)
  79         *data_return = NULL;
  80
  81     /* create an XpmImage from the image */
  82     ErrorStatus = XpmCreateXpmImageFromImage(display, image, shapeimage,
  83                                              &xpmimage, attributes);
  84     if (ErrorStatus != XpmSuccess)
  85         return (ErrorStatus);
  86
  87     /* create the data from the XpmImage */
  88     if (attributes) {
  89         xpmSetInfo(&info, attributes);
  90         ErrorStatus = XpmCreateDataFromXpmImage(data_return, &xpmimage, &info);
  91     } else
  92         ErrorStatus = XpmCreateDataFromXpmImage(data_return, &xpmimage, NULL);
  93
  94     /* free the XpmImage */
  95     XpmFreeXpmImage(&xpmimage);
  96
  97     return (ErrorStatus);
  98 }
  99
 100 #undef RETURN
 101 #define RETURN(status) \
 102 { \
 103       ErrorStatus = status; \
 104       goto exit; \
 105 }
 106
 107 #ifdef __OS2__
 108 /* Visual Age cannot deal with old, non-ansi, code */
 109 int
 110 XpmCreateDataFromXpmImage(char*** data_return, XpmImage* image, XpmInfo* info)
 111 #else
 112 int
 113 XpmCreateDataFromXpmImage(data_return, image, info)
 114     char ***data_return;
 115     XpmImage *image;
 116     XpmInfo *info;
 117 #endif
 118 {
 119     /* calculation variables */
 120     int ErrorStatus;
 121     char buf[BUFSIZ];
 122     char **header = NULL, **data, **sptr, **sptr2, *s;
 123     unsigned int header_size, header_nlines;
 124     unsigned int data_size, data_nlines;
 125     unsigned int extensions = 0, ext_size = 0, ext_nlines = 0;
 126     unsigned int offset, l, n;
 127
 128     *data_return = NULL;
 129
 130     extensions = info && (info->valuemask & XpmExtensions)
 131         && info->nextensions;
 132
 133     /* compute the number of extensions lines and size */
 134     if (extensions)
 135         CountExtensions(info->extensions, info->nextensions,
 136                         &ext_size, &ext_nlines);
 137
 138     /*
 139      * alloc a temporary array of char pointer for the header section which
 140      * is the hints line + the color table lines
 141      */
 142     header_nlines = 1 + image->ncolors;
 143     header_size = sizeof(char *) * header_nlines;
 144     header = (char **) XpmCalloc(header_size, sizeof(char *));
 145     if (!header)
 146         return (XpmNoMemory);
 147
 148     /* print the hints line */
 149     s = buf;
 150 #ifndef VOID_SPRINTF
 151     s +=
 152 #endif
 153     sprintf(s, "%d %d %d %d", image->width, image->height,
 154             image->ncolors, image->cpp);
 155 #ifdef VOID_SPRINTF
 156     s += strlen(s);
 157 #endif
 158
 159     if (info && (info->valuemask & XpmHotspot)) {
 160 #ifndef VOID_SPRINTF
 161         s +=
 162 #endif
 163         sprintf(s, " %d %d", info->x_hotspot, info->y_hotspot);
 164 #ifdef VOID_SPRINTF
 165         s += strlen(s);
 166 #endif
 167     }
 168     if (extensions) {
 169         strcpy(s, " XPMEXT");
 170         s += 7;
 171     }
 172     l = s - buf + 1;
 173     *header = (char *) XpmMalloc(l);
 174     if (!*header)
 175         RETURN(XpmNoMemory);
 176     header_size += l;
 177     strcpy(*header, buf);
 178
 179     /* print colors */
 180     ErrorStatus = CreateColors(header + 1, &header_size,
 181                                image->colorTable, image->ncolors, image->cpp);
 182
 183     if (ErrorStatus != XpmSuccess)
 184         RETURN(ErrorStatus);
 185
 186     /* now we know the size needed, alloc the data and copy the header lines */
 187     offset = image->width * image->cpp + 1;
 188     data_size = header_size + (image->height + ext_nlines) * sizeof(char *)
 189         + image->height * offset + ext_size;
 190
 191     data = (char **) XpmMalloc(data_size);
 192     if (!data)
 193         RETURN(XpmNoMemory);
 194
 195     data_nlines = header_nlines + image->height + ext_nlines;
 196     *data = (char *) (data + data_nlines);
 197     n = image->ncolors;
 198     for (l = 0, sptr = data, sptr2 = header; l <= n; l++, sptr++, sptr2++) {
 199         strcpy(*sptr, *sptr2);
 200         *(sptr + 1) = *sptr + strlen(*sptr2) + 1;
 201     }
 202
 203     /* print pixels */
 204     data[header_nlines] = (char *) data + header_size
 205         + (image->height + ext_nlines) * sizeof(char *);
 206
 207     CreatePixels(data + header_nlines, image->width, image->height,
 208                  image->cpp, image->data, image->colorTable);
 209
 210     /* print extensions */
 211     if (extensions)
 212         CreateExtensions(data + header_nlines + image->height - 1, offset,
 213                          info->extensions, info->nextensions,
 214                          ext_nlines);
 215
 216     *data_return = data;
 217     ErrorStatus = XpmSuccess;
 218
 219 /* exit point, free only locally allocated variables */
 220 exit:
 221     if (header) {
 222         for (l = 0; l < header_nlines; l++)
 223             if (header[l])
 224                 XpmFree(header[l]);
 225                 XpmFree(header);
 226     }
 227     return(ErrorStatus);
 228 }
 229
 230 #ifdef __OS2__
 231 /* Visual Age cannot deal with old, non-ansi, code */
 232 static int
 233 CreateColors(
 234   char**        dataptr
 235 , unsigned int* data_size
 236 , XpmColor*     colors
 237 , unsigned int  ncolors
 238 , unsigned int  cpp
 239 )
 240 #else
 241 static int
 242 CreateColors(dataptr, data_size, colors, ncolors, cpp)
 243     char **dataptr;
 244     unsigned int *data_size;
 245     XpmColor *colors;
 246     unsigned int ncolors;
 247     unsigned int cpp;
 248 #endif
 249 {
 250     char buf[BUFSIZ];
 251     unsigned int a, key, l;
 252     char *s, *s2;
 253     char **defaults;
 254
 255     for (a = 0; a < ncolors; a++, colors++, dataptr++) {
 256
 257         defaults = (char **) colors;
 258         strncpy(buf, *defaults++, cpp);
 259         s = buf + cpp;
 260
 261         for (key = 1; key <= NKEYS; key++, defaults++) {
 262             if (s2 = *defaults) {
 263 #ifndef VOID_SPRINTF
 264                 s +=
 265 #endif
 266                 sprintf(s, "\t%s %s", xpmColorKeys[key - 1], s2);
 267 #ifdef VOID_SPRINTF
 268                 s += strlen(s);
 269 #endif
 270             }
 271         }
 272         l = s - buf + 1;
 273         s = (char *) XpmMalloc(l);
 274         if (!s)
 275             return (XpmNoMemory);
 276         *data_size += l;
 277         *dataptr = strcpy(s, buf);
 278     }
 279     return (XpmSuccess);
 280 }
 281
 282 #ifdef __OS2__
 283 /* Visual Age cannot deal with old, non-ansi, code */
 284 static void CreatePixels(
 285   char**        dataptr
 286 , unsigned int  width
 287 , unsigned int  height
 288 , unsigned int  cpp
 289 , unsigned int* pixels
 290 , XpmColor*     colors
 291 )
 292 #else
 293 static void
 294 CreatePixels(dataptr, width, height, cpp, pixels, colors)
 295     char **dataptr;
 296     unsigned int width;
 297     unsigned int height;
 298     unsigned int cpp;
 299     unsigned int *pixels;
 300     XpmColor *colors;
 301 #endif
 302 {
 303     char *s;
 304     unsigned int x, y, h, offset;
 305
 306     h = height - 1;
 307     offset = width * cpp + 1;
 308     for (y = 0; y < h; y++, dataptr++) {
 309         s = *dataptr;
 310         for (x = 0; x < width; x++, pixels++) {
 311             strncpy(s, colors[*pixels].string, cpp);
 312             s += cpp;
 313         }
 314         *s = '\0';
 315         *(dataptr + 1) = *dataptr + offset;
 316     }
 317     /* duplicate some code to avoid a test in the loop */
 318     s = *dataptr;
 319     for (x = 0; x < width; x++, pixels++) {
 320         strncpy(s, colors[*pixels].string, cpp);
 321         s += cpp;
 322     }
 323     *s = '\0';
 324 }
 325
 326 #ifdef __OS2__
 327 /* Visual Age cannot deal with old, non-ansi, code */
 328 static void CountExtensions(
 329   XpmExtension* ext
 330 , unsigned int  num
 331 , unsigned int* ext_size
 332 , unsigned int* ext_nlines
 333 )
 334 #else
 335 static void
 336 CountExtensions(ext, num, ext_size, ext_nlines)
 337     XpmExtension *ext;
 338     unsigned int num;
 339     unsigned int *ext_size;
 340     unsigned int *ext_nlines;
 341 #endif
 342 {
 343     unsigned int x, y, a, size, nlines;
 344     char **line;
 345
 346     size = 0;
 347     nlines = 0;
 348     for (x = 0; x < num; x++, ext++) {
 349         /* 1 for the name */
 350         nlines += ext->nlines + 1;
 351         /* 8 = 7 (for "XPMEXT ") + 1 (for 0) */
 352         size += strlen(ext->name) + 8;
 353         a = ext->nlines;
 354         for (y = 0, line = ext->lines; y < a; y++, line++)
 355             size += strlen(*line) + 1;
 356     }
 357     /* 10 and 1 are for the ending "XPMENDEXT" */
 358     *ext_size = size + 10;
 359     *ext_nlines = nlines + 1;
 360 }
 361
 362 #ifdef __OS2__
 363 /* Visual Age cannot deal with old, non-ansi, code */
 364 static void
 365 CreateExtensions(
 366   char**        dataptr
 367 , unsigned int  offset
 368 , XpmExtension* ext
 369 , unsigned int  num
 370 , unsigned int  ext_nlines
 371 )
 372 #else
 373 static void
 374 CreateExtensions(dataptr, offset, ext, num, ext_nlines)
 375     char **dataptr;
 376     unsigned int offset;
 377     XpmExtension *ext;
 378     unsigned int num;
 379     unsigned int ext_nlines;
 380 #endif
 381 {
 382     unsigned int x, y, a, b;
 383     char **line;
 384
 385     *(dataptr + 1) = *dataptr + offset;
 386     dataptr++;
 387     a = 0;
 388     for (x = 0; x < num; x++, ext++) {
 389         sprintf(*dataptr, "XPMEXT %s", ext->name);
 390         a++;
 391         if (a < ext_nlines)
 392             *(dataptr + 1) = *dataptr + strlen(ext->name) + 8;
 393         dataptr++;
 394         b = ext->nlines;
 395         for (y = 0, line = ext->lines; y < b; y++, line++) {
 396             strcpy(*dataptr, *line);
 397             a++;
 398             if (a < ext_nlines)
 399                 *(dataptr + 1) = *dataptr + strlen(*line) + 1;
 400             dataptr++;
 401         }
 402     }
 403     strcpy(*dataptr, "XPMENDEXT");
 404 }