pidgin/gtkblist-theme-loader.c

   1 /*
   2  * GTKBlistThemeLoader for Pidgin
   3  *
   4  * Pidgin is the legal property of its developers, whose names are too numerous
   5  * to list here.  Please refer to the COPYRIGHT file distributed with this
   6  * source distribution.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02111-1301  USA
  21  */
  22
  23 #include "internal.h"
  24
  25 #include <stdlib.h>
  26 #include <string.h>
  27
  28 #include "xmlnode.h"
  29 #include "debug.h"
  30 #include "util.h"
  31
  32 #include "gtkblist-theme-loader.h"
  33 #include "gtkblist-theme.h"
  34
  35 /******************************************************************************
  36  * Globals
  37  *****************************************************************************/
  38
  39 #define DEFAULT_TEXT_COLOR "black"
  40
  41 /*****************************************************************************
  42  * Buddy List Theme Builder
  43  *****************************************************************************/
  44
  45 static PidginThemeFont *
  46 pidgin_theme_font_parse(PurpleXmlNode *node)
  47 {
  48         const char *font;
  49         const char *colordesc;
  50         GdkRGBA color;
  51
  52         font = purple_xmlnode_get_attrib(node, "font");
  53
  54         if ((colordesc = purple_xmlnode_get_attrib(node, "color")) == NULL ||
  55                         !gdk_rgba_parse(&color, colordesc))
  56                 gdk_rgba_parse(&color, DEFAULT_TEXT_COLOR);
  57
  58         return pidgin_theme_font_new(font, &color);
  59 }
  60
  61 static GdkRGBA *
  62 parse_color(PurpleXmlNode *node, const char *tag)
  63 {
  64         const char *temp = purple_xmlnode_get_attrib(node, tag);
  65         GdkRGBA color;
  66
  67         if (temp && gdk_rgba_parse(&color, temp)) {
  68                 return gdk_rgba_copy(&color);
  69         } else {
  70                 return NULL;
  71         }
  72 }
  73
  74 static PurpleTheme *
  75 pidgin_blist_loader_build(const gchar *theme_dir)
  76 {
  77         PurpleXmlNode *root_node = NULL, *sub_node, *sub_sub_node;
  78         gchar *dir, *filename_full, *data = NULL;
  79         const gchar *temp, *name;
  80         gboolean success = TRUE;
  81         GdkRGBA *bgcolor, *expanded_bgcolor, *collapsed_bgcolor, *contact_color;
  82         PidginThemeFont *expanded, *collapsed, *contact, *online, *away, *offline, *idle, *message, *message_nick_said, *status;
  83         PidginBlistLayout layout;
  84         PidginBlistTheme *theme;
  85         int i;
  86         struct {
  87                 const char *tag;
  88                 PidginThemeFont **font;
  89         } lookups[] = {
  90                 {"contact_text", &contact},
  91                 {"online_text", &online},
  92                 {"away_text", &away},
  93                 {"offline_text", &offline},
  94                 {"idle_text", &idle},
  95                 {"message_text", &message},
  96                 {"message_nick_said_text", &message_nick_said},
  97                 {"status_text", &status},
  98                 {NULL, NULL}
  99         };
 100
 101         bgcolor = expanded_bgcolor = collapsed_bgcolor = contact_color = NULL;
 102         expanded          = NULL;
 103         collapsed         = NULL;
 104         contact           = NULL;
 105         online            = NULL;
 106         away              = NULL;
 107         offline           = NULL;
 108         idle              = NULL;
 109         message           = NULL;
 110         message_nick_said = NULL;
 111         status            = NULL;
 112
 113         /* Find the theme file */
 114         g_return_val_if_fail(theme_dir != NULL, NULL);
 115         dir = g_build_filename(theme_dir, "purple", "blist", NULL);
 116         filename_full = g_build_filename(dir, "theme.xml", NULL);
 117
 118         if (g_file_test(filename_full, G_FILE_TEST_IS_REGULAR))
 119                 root_node = purple_xmlnode_from_file(dir, "theme.xml", "buddy list themes", "blist-loader");
 120
 121         g_free(filename_full);
 122         if (root_node == NULL) {
 123                 g_free(dir);
 124                 return NULL;
 125         }
 126
 127         sub_node = purple_xmlnode_get_child(root_node, "description");
 128         data = purple_xmlnode_get_data(sub_node);
 129
 130         name = purple_xmlnode_get_attrib(root_node, "name");
 131
 132         /* <blist> */
 133         success = name && purple_strequal(purple_xmlnode_get_attrib(root_node, "type"), "pidgin buddy list");
 134
 135         if (!success)
 136                 purple_debug_warning("gtkblist-theme-loader", "Missing attribute or problem with the root element\n");
 137
 138         if (success) {
 139                 if ((success = (sub_node = purple_xmlnode_get_child(root_node, "blist")) != NULL))
 140                         bgcolor = parse_color(sub_node, "color");
 141                 else
 142                         purple_debug_warning("gtkblist-theme-loader", "Missing or problem with tags: <blist>.\n");
 143         }
 144
 145         /* <groups> */
 146         if (success) {
 147                 if ((success = (sub_node = purple_xmlnode_get_child(root_node, "groups")) != NULL
 148                              && (sub_sub_node = purple_xmlnode_get_child(sub_node, "expanded")) != NULL)) {
 149                         expanded = pidgin_theme_font_parse(sub_sub_node);
 150                         expanded_bgcolor = parse_color(sub_sub_node, "background");
 151                 } else
 152                         purple_debug_warning("gtkblist-theme-loader", "Missing or problem with tags: <groups> <expanded>.\n");
 153         }
 154
 155         if (success) {
 156                 if ((success = sub_node != NULL && (sub_sub_node = purple_xmlnode_get_child(sub_node, "collapsed")) != NULL)) {
 157                         collapsed = pidgin_theme_font_parse(sub_sub_node);
 158                         collapsed_bgcolor = parse_color(sub_sub_node, "background");
 159                 } else
 160                         purple_debug_warning("gtkblist-theme-loader", "Missing or problem with tags: <groups> <collapsed>.\n");
 161         }
 162
 163         /* <buddys> */
 164         if (success) {
 165                 if ((success = (sub_node = purple_xmlnode_get_child(root_node, "buddys")) != NULL &&
 166                              (sub_sub_node = purple_xmlnode_get_child(sub_node, "placement")) != NULL)) {
 167
 168                         layout.status_icon = (temp = purple_xmlnode_get_attrib(sub_sub_node, "status_icon")) != NULL ? atoi(temp) : 0;
 169                         layout.text = (temp = purple_xmlnode_get_attrib(sub_sub_node, "name")) != NULL ? atoi(temp) : 1;
 170                         layout.emblem = (temp = purple_xmlnode_get_attrib(sub_sub_node, "emblem")) != NULL ? atoi(temp) : 2;
 171                         layout.protocol_icon = (temp = purple_xmlnode_get_attrib(sub_sub_node, "protocol_icon")) != NULL ? atoi(temp) : 3;
 172                         layout.buddy_icon = (temp = purple_xmlnode_get_attrib(sub_sub_node, "buddy_icon")) != NULL ? atoi(temp) : 4;
 173                         layout.show_status = (temp = purple_xmlnode_get_attrib(sub_sub_node, "status_icon")) != NULL ? atoi(temp) != 0 : 1;
 174
 175                 } else purple_debug_warning("gtkblist-theme-loader", "Missing or problem with tags: <buddys> <placement>.\n");
 176         }
 177
 178         if (success) {
 179                 if ((success = (sub_node != NULL && (sub_sub_node = purple_xmlnode_get_child(sub_node, "background")) != NULL)))
 180                         contact_color = parse_color(sub_sub_node, "color");
 181                 else
 182                         purple_debug_warning("gtkblist-theme-loader", "Missing or problem with tags: <buddys> <background>.\n");
 183         }
 184
 185         for (i = 0; success && lookups[i].tag; i++) {
 186                 if ((success = (sub_node != NULL &&
 187                                                 (sub_sub_node = purple_xmlnode_get_child(sub_node, lookups[i].tag)) != NULL))) {
 188                         *(lookups[i].font) = pidgin_theme_font_parse(sub_sub_node);
 189                 } else {
 190                         *(lookups[i].font) = NULL;
 191                 }
 192         }
 193
 194         /* name is required for theme manager */
 195         success = (success && purple_xmlnode_get_attrib(root_node, "name") != NULL);
 196
 197         /* the new theme */
 198         theme = g_object_new(PIDGIN_TYPE_BLIST_THEME,
 199                         "type", "blist",
 200                         "name", name,
 201                         "author", purple_xmlnode_get_attrib(root_node, "author"),
 202                         "image", purple_xmlnode_get_attrib(root_node, "image"),
 203                         "directory", dir,
 204                         "description", data,
 205                         "background-color", bgcolor,
 206                         "layout", &layout,
 207                         "expanded-color", expanded_bgcolor,
 208                         "expanded-text", expanded,
 209                         "collapsed-color", collapsed_bgcolor,
 210                         "collapsed-text", collapsed,
 211                         "contact-color", contact_color,
 212                         "contact", contact,
 213                         "online", online,
 214                         "away", away,
 215                         "offline", offline,
 216                         "idle", idle,
 217                         "message", message,
 218                         "message-nick-said", message_nick_said,
 219                         "status", status, NULL);
 220
 221         for (i = 0; lookups[i].tag; i++) {
 222                 if (*lookups[i].font) {
 223                         pidgin_theme_font_free(*lookups[i].font);
 224                 }
 225         }
 226
 227         pidgin_theme_font_free(expanded);
 228         pidgin_theme_font_free(collapsed);
 229
 230         purple_xmlnode_free(root_node);
 231         g_free(data);
 232         g_free(dir);
 233
 234         /* malformed xml file - also frees all partial data*/
 235         if (!success) {
 236                 g_object_unref(theme);
 237                 theme = NULL;
 238         }
 239
 240         if (bgcolor)
 241                 gdk_rgba_free(bgcolor);
 242         if (expanded_bgcolor)
 243                 gdk_rgba_free(expanded_bgcolor);
 244         if (collapsed_bgcolor)
 245                 gdk_rgba_free(collapsed_bgcolor);
 246         if (contact_color)
 247                 gdk_rgba_free(contact_color);
 248
 249         return PURPLE_THEME(theme);
 250 }
 251
 252 /******************************************************************************
 253  * GObject Stuff
 254  *****************************************************************************/
 255
 256 static void
 257 pidgin_blist_theme_loader_class_init(PidginBlistThemeLoaderClass *klass)
 258 {
 259         PurpleThemeLoaderClass *loader_klass = PURPLE_THEME_LOADER_CLASS(klass);
 260
 261         loader_klass->purple_theme_loader_build = pidgin_blist_loader_build;
 262 }
 263
 264 GType
 265 pidgin_blist_theme_loader_get_type(void)
 266 {
 267         static GType type = 0;
 268         if (type == 0) {
 269                 static const GTypeInfo info = {
 270                         sizeof(PidginBlistThemeLoaderClass),
 271                         NULL, /* base_init */
 272                         NULL, /* base_finalize */
 273                         (GClassInitFunc)pidgin_blist_theme_loader_class_init, /* class_init */
 274                         NULL, /* class_finalize */
 275                         NULL, /* class_data */
 276                         sizeof(PidginBlistThemeLoader),
 277                         0, /* n_preallocs */
 278                         NULL, /* instance_init */
 279                         NULL, /* value table */
 280                 };
 281                 type = g_type_register_static(PURPLE_TYPE_THEME_LOADER,
 282                                 "PidginBlistThemeLoader", &info, 0);
 283         }
 284         return type;
 285 }