src/utils/cas/graphics.c

   1 /*
   2  *  Name:         Graphics functions
   3  *
   4  *  Purpose:      All the functions that are used to create the Online Signature Image
   5  *
   6  *  Author:       Pedro de Oliveira <falso@rdk.homeip.net>
   7  *
   8  *  Copyright (c) 2004-2008 Pedro de Oliveira ( falso@rdk.homeip-net )
   9  *
  10  *  This file is part of aMule.
  11  *
  12  *  This program is free software; you can redistribute it and/or modify
  13  *  it under the terms of the GNU General Public License as published by
  14  *  the Free Software Foundation; either version 2 of the License, or
  15  *  (at your option) any later version.
  16  *
  17  *  This program is distributed in the hope that it will be useful,
  18  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  *  GNU General Public License for more details.
  21  *
  22  *  You should have received a copy of the GNU General Public License
  23  *  along with this program; if not, write to the
  24  *  Free Software Foundation, Inc.,
  25  *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA
  26 */
  27
  28
  29 #ifdef __GD__
  30
  31 #include <stdlib.h>
  32
  33 #include <gd.h>
  34
  35 #include "functions.h"
  36 #include "configfile.h"
  37 #include "graphics.h"
  38
  39 /*
  40  * this is the funcion that writes the text to the image.
  41  * almost everything is taken from libgd examples
  42  */
  43 int createimage(CONF *config, char *lines[IMG_TEXTLINES], char *path_for_picture)
  44 {
  45         FILE *in, *out;
  46         char *path;
  47         gdImagePtr im;
  48         int white, i;
  49         int brect[8];
  50
  51         if ( (in = fopen(config->font, "r")) == NULL) {
  52                 perror("font not found\ncheck casrc\n");
  53                 return 0;
  54         }
  55         fclose(in);
  56
  57         if ( (in = fopen(config->source, "rb")) == NULL) {
  58                 perror("source_image not found\ncheck casrc\n");
  59                 return 0;
  60         }
  61
  62         im = gdImageCreateFromPng(in);
  63         if( NULL == im) {
  64                 perror("Error loading source image (not a valid png image file?).\n");
  65                 return 0;
  66         }
  67         white = gdImageColorResolve(im, 255, 255, 255);
  68
  69         for (i = 0; i < IMG_TEXTLINES; i++) {
  70                 if (config->enabled[i] == 1) {
  71                         gdImageStringFT(im, &brect[0], white, config->font, config->size,
  72                                         0.0, config->x[i], config->y[i], lines[i]);
  73                 }
  74         }
  75
  76         if (config->img_type==0) {
  77                 path = get_amule_path("aMule-online-sign.png", 0, path_for_picture);
  78         } else {
  79                 path = get_amule_path("aMule-online-sign.jpg", 0, path_for_picture);
  80         }
  81
  82         if (path == NULL && config->img_type==0) {
  83                 perror("could not get PNG path\n");
  84                 return 0;
  85         } else if (path == NULL) {
  86                 perror("could not get JPG path\n");
  87                 return 0;
  88         }
  89         out = fopen(path, "w");
  90         free(path);
  91
  92         if (config->img_type==0) {
  93                 gdImagePng(im, out);
  94         } else {
  95                 gdImageJpeg(im, out, -1);
  96         }
  97
  98         fclose(out);
  99         printf("Online Signature picture created.\n");
 100         gdImageDestroy(im);
 101
 102         return 1;
 103 }
 104
 105 #endif
 106