Pileus Git - grits/blob - src/gis/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  * GObject code *
  24  ****************/
  25 enum {
  26         SIG_PREF_CHANGED,
  27         NUM_SIGNALS,
  28 };
  29 static guint signals[NUM_SIGNALS];
  30
  31 G_DEFINE_TYPE(GisPrefs, gis_prefs, G_TYPE_OBJECT);
  32 static void gis_prefs_init(GisPrefs *self)
  33 {
  34         g_debug("GisPrefs: init");
  35         self->key_file = g_key_file_new();
  36 }
  37 static GObject *gis_prefs_constructor(GType gtype, guint n_properties,
  38                 GObjectConstructParam *properties)
  39 {
  40         g_debug("gis_prefs: constructor");
  41         GObjectClass *parent_class = G_OBJECT_CLASS(gis_prefs_parent_class);
  42         return  parent_class->constructor(gtype, n_properties, properties);
  43 }
  44 static void gis_prefs_dispose(GObject *_self)
  45 {
  46         g_debug("GisPrefs: dispose");
  47         GisPrefs *self = GIS_PREFS(_self);
  48         if (self->key_file) {
  49                 gsize length;
  50                 g_mkdir_with_parents(g_path_get_dirname(self->key_path), 0755);
  51                 gchar *data = g_key_file_to_data(self->key_file, &length, NULL);
  52                 g_file_set_contents(self->key_path, data, length, NULL);
  53                 g_key_file_free(self->key_file);
  54                 self->key_file = NULL;
  55         }
  56         G_OBJECT_CLASS(gis_prefs_parent_class)->dispose(_self);
  57 }
  58 static void gis_prefs_finalize(GObject *_self)
  59 {
  60         g_debug("GisPrefs: finalize");
  61         G_OBJECT_CLASS(gis_prefs_parent_class)->finalize(_self);
  62 }
  63 static void gis_prefs_class_init(GisPrefsClass *klass)
  64 {
  65         g_debug("GisPrefs: class_init");
  66         GObjectClass *gobject_class = G_OBJECT_CLASS(klass);
  67         gobject_class->constructor  = gis_prefs_constructor;
  68         gobject_class->dispose      = gis_prefs_dispose;
  69         gobject_class->finalize     = gis_prefs_finalize;
  70         signals[SIG_PREF_CHANGED] = g_signal_new(
  71                         "pref-changed",
  72                         G_TYPE_FROM_CLASS(gobject_class),
  73                         G_SIGNAL_RUN_LAST,
  74                         0,
  75                         NULL,
  76                         NULL,
  77                         gis_cclosure_marshal_VOID__STRING_UINT_POINTER,
  78                         G_TYPE_NONE,
  79                         1,
  80                         G_TYPE_STRING,
  81                         G_TYPE_UINT,
  82                         G_TYPE_POINTER);
  83 }
  84
  85 /***********
  86  * Methods *
  87  ***********/
  88 GisPrefs *gis_prefs_new(const gchar *prog)
  89 {
  90         g_debug("GisPrefs: new - %s", prog);
  91         GisPrefs *self = g_object_new(GIS_TYPE_PREFS, NULL);
  92         self->key_path = g_build_filename(g_get_user_config_dir(),
  93                         prog, "config.ini", NULL);
  94         GError *error = NULL;
  95         g_key_file_load_from_file(self->key_file, self->key_path,
  96                         G_KEY_FILE_KEEP_COMMENTS, &error);
  97         if (error) {
  98                 g_debug("GisPrefs: new - Trying %s defaults", prog);
  99                 g_clear_error(&error);
 100                 gchar *tmp = g_build_filename(DATADIR, prog, "defaults.ini", NULL);
 101                 g_key_file_load_from_file(self->key_file, tmp,
 102                                 G_KEY_FILE_KEEP_COMMENTS, &error);
 103                 g_free(tmp);
 104         }
 105         if (error) {
 106                 g_debug("GisPrefs: new - Trying GIS defaults");
 107                 g_clear_error(&error);
 108                 gchar *tmp = g_build_filename(DATADIR, "gis", "defaults.ini", NULL);
 109                 g_key_file_load_from_file(self->key_file, tmp,
 110                                 G_KEY_FILE_KEEP_COMMENTS, &error);
 111                 g_free(tmp);
 112         }
 113         if (error) {
 114                 g_clear_error(&error);
 115                 g_warning("GisPrefs: new - Unable to load key file `%s': %s",
 116                         self->key_path, error->message);
 117         }
 118         return self;
 119 }
 120
 121 #define make_pref_type(name, c_type, g_type)                                         \
 122 c_type gis_prefs_get_##name##_v(GisPrefs *self,                                      \
 123                 const gchar *group, const gchar *key)                                \
 124 {                                                                                    \
 125         GError *error = NULL;                                                        \
 126         c_type value = g_key_file_get_##name(self->key_file, group, key, &error);    \
 127         if (error && error->code != G_KEY_FILE_ERROR_GROUP_NOT_FOUND)                \
 128                 g_warning("GisPrefs: get_value_##name - error getting key %s: %s\n", \
 129                                 key, error->message);                                \
 130         return value;                                                                \
 131 }                                                                                    \
 132 c_type gis_prefs_get_##name(GisPrefs *self, const gchar *key)                        \
 133 {                                                                                    \
 134         gchar **keys  = g_strsplit(key, "/", 2);                                     \
 135         c_type value = gis_prefs_get_##name##_v(self, keys[0], keys[1]);             \
 136         g_strfreev(keys);                                                            \
 137         return value;                                                                \
 138 }                                                                                    \
 139                                                                                      \
 140 void gis_prefs_set_##name##_v(GisPrefs *self,                                        \
 141                 const gchar *group, const gchar *key, const c_type value)            \
 142 {                                                                                    \
 143         g_key_file_set_##name(self->key_file, group, key, value);                    \
 144         gchar *all = g_strconcat(group, "/", key, NULL);                             \
 145         g_signal_emit(self, signals[SIG_PREF_CHANGED], 0,                            \
 146                         all, g_type, &value);                                        \
 147         g_free(all);                                                                 \
 148 }                                                                                    \
 149 void gis_prefs_set_##name(GisPrefs *self, const gchar *key, const c_type value)      \
 150 {                                                                                    \
 151         gchar **keys = g_strsplit(key, "/", 2);                                      \
 152         gis_prefs_set_##name##_v(self, keys[0], keys[1], value);                     \
 153         g_strfreev(keys);                                                            \
 154 }                                                                                    \
 155
 156 make_pref_type(string,  gchar*,   G_TYPE_STRING)
 157 make_pref_type(boolean, gboolean, G_TYPE_BOOLEAN)
 158 make_pref_type(integer, gint,     G_TYPE_INT)
 159 make_pref_type(double,  gdouble,  G_TYPE_DOUBLE)