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 #ifdef __OS2__
  41 /* Visual Age cannot deal with old, non-ansi, code */
  42 void
  43 xpmInitXpmInfo(XpmInfo* info)
  44 #else
  45 void
  46 xpmInitXpmInfo(info)
  47     XpmInfo *info;
  48 #endif
  49 {
  50     if (info) {
  51         info->hints_cmt = NULL;
  52         info->colors_cmt = NULL;
  53         info->pixels_cmt = NULL;
  54         info->extensions = NULL;
  55         info->nextensions = 0;
  56     }
  57 }
  58
  59 /*
  60  * Free the XpmInfo data which have been allocated
  61  */
  62 #ifdef __OS2__
  63 /* Visual Age cannot deal with old, non-ansi, code */
  64 void
  65 XpmFreeXpmInfo(XpmInfo* info)
  66 #else
  67 void
  68 XpmFreeXpmInfo(info)
  69     XpmInfo *info;
  70 #endif
  71 {
  72     if (info) {
  73         if (info->valuemask & XpmComments) {
  74             if (info->hints_cmt) {
  75                 XpmFree(info->hints_cmt);
  76                 info->hints_cmt = NULL;
  77             }
  78             if (info->colors_cmt) {
  79                 XpmFree(info->colors_cmt);
  80                 info->colors_cmt = NULL;
  81             }
  82             if (info->pixels_cmt) {
  83                 XpmFree(info->pixels_cmt);
  84                 info->pixels_cmt = NULL;
  85             }
  86         }
  87         if (info->valuemask & XpmReturnExtensions && info->nextensions) {
  88             XpmFreeExtensions(info->extensions, info->nextensions);
  89             info->extensions = NULL;
  90             info->nextensions = 0;
  91         }
  92         info->valuemask = 0;
  93     }
  94 }
  95
  96 /*
  97  * Set the XpmInfo valuemask to retrieve required info
  98  */
  99 #ifdef __OS2__
 100 /* Visual Age cannot deal with old, non-ansi, code */
 101 void xpmSetInfoMask(XpmInfo* info, XpmAttributes* attributes)
 102 #else
 103 void
 104 xpmSetInfoMask(info, attributes)
 105     XpmInfo *info;
 106     XpmAttributes *attributes;
 107 #endif
 108 {
 109     info->valuemask = 0;
 110     if (attributes->valuemask & XpmReturnInfos)
 111         info->valuemask |= XpmReturnComments;
 112     if (attributes->valuemask & XpmReturnExtensions)
 113         info->valuemask |= XpmReturnExtensions;
 114 }
 115
 116 /*
 117  * Fill in the XpmInfo with the XpmAttributes
 118  */
 119 #ifdef __OS2__
 120 /* Visual Age cannot deal with old, non-ansi, code */
 121 void
 122 xpmSetInfo(XpmInfo* info, XpmAttributes* attributes)
 123 #else
 124 void
 125 xpmSetInfo(info, attributes)
 126     XpmInfo *info;
 127     XpmAttributes *attributes;
 128 #endif
 129 {
 130     info->valuemask = 0;
 131     if (attributes->valuemask & XpmInfos) {
 132         info->valuemask |= XpmComments | XpmColorTable;
 133         info->hints_cmt = attributes->hints_cmt;
 134         info->colors_cmt = attributes->colors_cmt;
 135         info->pixels_cmt = attributes->pixels_cmt;
 136     }
 137     if (attributes->valuemask & XpmExtensions) {
 138         info->valuemask |= XpmExtensions;
 139         info->extensions = attributes->extensions;
 140         info->nextensions = attributes->nextensions;
 141     }
 142     if (attributes->valuemask & XpmHotspot) {
 143         info->valuemask |= XpmHotspot;
 144         info->x_hotspot = attributes->x_hotspot;
 145         info->y_hotspot = attributes->y_hotspot;
 146     }
 147 }