Pileus Git - grits/blob - src/gis-prefs.c

   1 /*
   2  * Copyright (C) 2009 Andy Spencer <spenceal@rose-hulman.edu>
   3  *
   4  * This program is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program 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
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #include <glib.h>
  19 #include "gis-marshal.h"
  20 #include "gis-prefs.h"
  21
  22
  23 enum {
  24         SIG_PREF_CHANGED,
  25         NUM_SIGNALS,
  26 };
  27 static guint signals[NUM_SIGNALS];
  28
  29
  30 /***********
  31  * Methods *
  32  ***********/
  33 GisPrefs *gis_prefs_new(const gchar *prog)
  34 {
  35         g_debug("GisPrefs: new - %s", prog);
  36         GisPrefs *self = g_object_new(GIS_TYPE_PREFS, NULL);
  37         self->key_path = g_build_filename(g_get_user_config_dir(),
  38                         prog, "config.ini", NULL);
  39         GError *error = NULL;
  40         g_key_file_load_from_file(self->key_file, self->key_path,
  41                         G_KEY_FILE_KEEP_COMMENTS, &error);
  42         if (error) {
  43                 g_debug("GisPrefs: new - Trying %s defaults", prog);
  44                 g_clear_error(&error);
  45                 gchar *tmp = g_build_filename(DATADIR, prog, "defaults.ini", NULL);
  46                 g_key_file_load_from_file(self->key_file, tmp,
  47                                 G_KEY_FILE_KEEP_COMMENTS, &error);
  48                 g_free(tmp);
  49         }
  50         if (error) {
  51                 g_debug("GisPrefs: new - Trying GIS defaults");
  52                 g_clear_error(&error);
  53                 gchar *tmp = g_build_filename(DATADIR, "gis", "defaults.ini", NULL);
  54                 g_key_file_load_from_file(self->key_file, tmp,
  55                                 G_KEY_FILE_KEEP_COMMENTS, &error);
  56                 g_free(tmp);
  57         }
  58         if (error) {
  59                 g_clear_error(&error);
  60                 g_warning("GisPrefs: new - Unable to load key file `%s': %s",
  61                         self->key_path, error->message);
  62         }
  63         return self;
  64 }
  65
  66 #define make_pref_type(name, c_type, g_type)                                         \
  67 c_type gis_prefs_get_##name##_v(GisPrefs *self,                                      \
  68                 const gchar *group, const gchar *key)                                \
  69 {                                                                                    \
  70         GError *error = NULL;                                                        \
  71         c_type value = g_key_file_get_##name(self->key_file, group, key, &error);    \
  72         if (error && error->code != G_KEY_FILE_ERROR_GROUP_NOT_FOUND)                \
  73                 g_warning("GisPrefs: get_value_##name - error getting key %s: %s\n", \
  74                                 key, error->message);                                \
  75         return value;                                                                \
  76 }                                                                                    \
  77 c_type gis_prefs_get_##name(GisPrefs *self, const gchar *key)                        \
  78 {                                                                                    \
  79         gchar **keys  = g_strsplit(key, "/", 2);                                     \
  80         c_type value = gis_prefs_get_##name##_v(self, keys[0], keys[1]);             \
  81         g_strfreev(keys);                                                            \
  82         return value;                                                                \
  83 }                                                                                    \
  84                                                                                      \
  85 void gis_prefs_set_##name##_v(GisPrefs *self,                                        \
  86                 const gchar *group, const gchar *key, const c_type value)            \
  87 {                                                                                    \
  88         g_key_file_set_##name(self->key_file, group, key, value);                    \
  89         gchar *all = g_strconcat(group, "/", key, NULL);                             \
  90         g_signal_emit(self, signals[SIG_PREF_CHANGED], 0,                            \
  91                         all, g_type, &value);                                        \
  92         g_free(all);                                                                 \
  93 }                                                                                    \
  94 void gis_prefs_set_##name(GisPrefs *self, const gchar *key, const c_type value)      \
  95 {                                                                                    \
  96         gchar **keys = g_strsplit(key, "/", 2);                                      \
  97         gis_prefs_set_##name##_v(self, keys[0], keys[1], value);                     \
  98         g_strfreev(keys);                                                            \
  99 }                                                                                    \
 100
 101 make_pref_type(string,  gchar*,   G_TYPE_STRING)
 102 make_pref_type(boolean, gboolean, G_TYPE_BOOLEAN)
 103 make_pref_type(integer, gint,     G_TYPE_INT)
 104 make_pref_type(double,  gdouble,  G_TYPE_DOUBLE)
 105
 106
 107 /****************
 108  * GObject code *
 109  ****************/
 110 G_DEFINE_TYPE(GisPrefs, gis_prefs, G_TYPE_OBJECT);
 111 static void gis_prefs_init(GisPrefs *self)
 112 {
 113         g_debug("GisPrefs: init");
 114         self->key_file = g_key_file_new();
 115 }
 116 static GObject *gis_prefs_constructor(GType gtype, guint n_properties,
 117                 GObjectConstructParam *properties)
 118 {
 119         g_debug("gis_prefs: constructor");
 120         GObjectClass *parent_class = G_OBJECT_CLASS(gis_prefs_parent_class);
 121         return  parent_class->constructor(gtype, n_properties, properties);
 122 }
 123 static void gis_prefs_dispose(GObject *_self)
 124 {
 125         g_debug("GisPrefs: dispose");
 126         GisPrefs *self = GIS_PREFS(_self);
 127         if (self->key_file) {
 128                 gsize length;
 129                 gchar *dir = g_path_get_dirname(self->key_path);
 130                 g_mkdir_with_parents(dir, 0755);
 131                 gchar *data = g_key_file_to_data(self->key_file, &length, NULL);
 132                 g_file_set_contents(self->key_path, data, length, NULL);
 133                 g_key_file_free(self->key_file);
 134                 g_free(self->key_path);
 135                 g_free(dir);
 136                 g_free(data);
 137                 self->key_file = NULL;
 138         }
 139         G_OBJECT_CLASS(gis_prefs_parent_class)->dispose(_self);
 140 }
 141 static void gis_prefs_finalize(GObject *_self)
 142 {
 143         g_debug("GisPrefs: finalize");
 144         G_OBJECT_CLASS(gis_prefs_parent_class)->finalize(_self);
 145 }
 146 static void gis_prefs_class_init(GisPrefsClass *klass)
 147 {
 148         g_debug("GisPrefs: class_init");
 149         GObjectClass *gobject_class = G_OBJECT_CLASS(klass);
 150         gobject_class->constructor  = gis_prefs_constructor;
 151         gobject_class->dispose      = gis_prefs_dispose;
 152         gobject_class->finalize     = gis_prefs_finalize;
 153         signals[SIG_PREF_CHANGED] = g_signal_new(
 154                         "pref-changed",
 155                         G_TYPE_FROM_CLASS(gobject_class),
 156                         G_SIGNAL_RUN_LAST,
 157                         0,
 158                         NULL,
 159                         NULL,
 160                         gis_cclosure_marshal_VOID__STRING_UINT_POINTER,
 161                         G_TYPE_NONE,
 162                         1,
 163                         G_TYPE_STRING,
 164                         G_TYPE_UINT,
 165                         G_TYPE_POINTER);
 166 }