src/xpm/info.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 *  Info.c:                                                                    *
  28 *                                                                             *
  29 *  XPM library                                                                *
  30 *  Functions related to the XpmInfo structure.                                *
  31 *                                                                             *
  32 *  Developed by Arnaud Le Hors                                                *
  33 \*****************************************************************************/
  34
  35 #include "XpmI.h"
  36
  37 /*
  38  * Init returned data to free safely later on
  39  */
  40 void
  41 xpmInitXpmInfo(info)
  42     XpmInfo *info;
  43 {
  44     if (info) {
  45         info->hints_cmt = NULL;
  46         info->colors_cmt = NULL;
  47         info->pixels_cmt = NULL;
  48         info->extensions = NULL;
  49         info->nextensions = 0;
  50     }
  51 }
  52
  53 /*
  54  * Free the XpmInfo data which have been allocated
  55  */
  56 void
  57 XpmFreeXpmInfo(info)
  58     XpmInfo *info;
  59 {
  60     if (info) {
  61         if (info->valuemask & XpmComments) {
  62             if (info->hints_cmt) {
  63                 XpmFree(info->hints_cmt);
  64                 info->hints_cmt = NULL;
  65             }
  66             if (info->colors_cmt) {
  67                 XpmFree(info->colors_cmt);
  68                 info->colors_cmt = NULL;
  69             }
  70             if (info->pixels_cmt) {
  71                 XpmFree(info->pixels_cmt);
  72                 info->pixels_cmt = NULL;
  73             }
  74         }
  75         if (info->valuemask & XpmReturnExtensions && info->nextensions) {
  76             XpmFreeExtensions(info->extensions, info->nextensions);
  77             info->extensions = NULL;
  78             info->nextensions = 0;
  79         }
  80         info->valuemask = 0;
  81     }
  82 }
  83
  84 /*
  85  * Set the XpmInfo valuemask to retrieve required info
  86  */
  87 void
  88 xpmSetInfoMask(info, attributes)
  89     XpmInfo *info;
  90     XpmAttributes *attributes;
  91 {
  92     info->valuemask = 0;
  93     if (attributes->valuemask & XpmReturnInfos)
  94         info->valuemask |= XpmReturnComments;
  95     if (attributes->valuemask & XpmReturnExtensions)
  96         info->valuemask |= XpmReturnExtensions;
  97 }
  98
  99 /*
 100  * Fill in the XpmInfo with the XpmAttributes
 101  */
 102 void
 103 xpmSetInfo(info, attributes)
 104     XpmInfo *info;
 105     XpmAttributes *attributes;
 106 {
 107     info->valuemask = 0;
 108     if (attributes->valuemask & XpmInfos) {
 109         info->valuemask |= XpmComments | XpmColorTable;
 110         info->hints_cmt = attributes->hints_cmt;
 111         info->colors_cmt = attributes->colors_cmt;
 112         info->pixels_cmt = attributes->pixels_cmt;
 113     }
 114     if (attributes->valuemask & XpmExtensions) {
 115         info->valuemask |= XpmExtensions;
 116         info->extensions = attributes->extensions;
 117         info->nextensions = attributes->nextensions;
 118     }
 119     if (attributes->valuemask & XpmHotspot) {
 120         info->valuemask |= XpmHotspot;
 121         info->x_hotspot = attributes->x_hotspot;
 122         info->y_hotspot = attributes->y_hotspot;
 123     }
 124 }