demos/c_simple/debug_handler.c

   1 /*****************************************************************************
   2  * This file is part of gfxprim library.                                     *
   3  *                                                                           *
   4  * Gfxprim is free software; you can redistribute it and/or                  *
   5  * modify it under the terms of the GNU Lesser General Public                *
   6  * License as published by the Free Software Foundation; either              *
   7  * version 2.1 of the License, or (at your option) any later version.        *
   8  *                                                                           *
   9  * Gfxprim is distributed in the hope that it will be useful,                *
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of            *
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU         *
  12  * Lesser General Public License for more details.                           *
  13  *                                                                           *
  14  * You should have received a copy of the GNU Lesser General Public          *
  15  * License along with gfxprim; if not, write to the Free Software            *
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor,                        *
  17  * Boston, MA  02110-1301  USA                                               *
  18  *                                                                           *
  19  * Copyright (C) 2009-2013 Cyril Hrubis <metan@ucw.cz>                       *
  20  *                                                                           *
  21  *****************************************************************************/
  22
  23 /*
  24
  25   Example on custom debug message handler.
  26
  27  */
  28
  29 #include <stdio.h>
  30 #include <GP.h>
  31
  32 static char level_to_c(int level)
  33 {
  34         switch (level) {
  35         case GP_DEBUG_TODO:
  36                 return 'T';
  37         case GP_DEBUG_WARN:
  38                 return 'W';
  39         case GP_DEBUG_BUG:
  40                 return 'B';
  41         case GP_DEBUG_FATAL:
  42                 return 'F';
  43         case 0 ... 9:
  44                 return '0' + level;
  45         default:
  46                 return 'U';
  47         }
  48 }
  49
  50 void debug_handler(const struct GP_DebugMsg *msg)
  51 {
  52         printf("%c: %s->%s():%u: %s\n", level_to_c(msg->level), msg->file,
  53                msg->fn, msg->line, msg->msg);
  54 }
  55
  56 int main(void)
  57 {
  58         /* Set custom debug handler */
  59         GP_SetDebugHandler(debug_handler);
  60
  61         /* Print some debug messages */
  62         GP_WARN("This is a warning");
  63         GP_FATAL("This is a fatal condition");
  64
  65         /* Turn on verbose debug and call some library functions */
  66         GP_SetDebugLevel(10);
  67
  68         GP_Pixmap *pixmap = GP_PixmapAlloc(1000, 1000, 1);
  69
  70         GP_FilterGaussianBlur(pixmap, pixmap, 10, 10, NULL);
  71
  72         GP_PixmapFree(pixmap);
  73
  74         return 0;
  75 }