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  * PidginBlistThemeLoader:
  37  *
  38  * A pidgin buddy list theme loader. extends PurpleThemeLoader (theme-loader.h)
  39  * This is a class designed to build sound themes
  40  */
  41 struct _PidginBlistThemeLoader
  42 {
  43         PurpleThemeLoader parent;
  44 };
  45
  46 /******************************************************************************
  47  * Globals
  48  *****************************************************************************/
  49
  50 #define DEFAULT_TEXT_COLOR "black"
  51
  52 /*****************************************************************************
  53  * Buddy List Theme Builder
  54  *****************************************************************************/
  55
  56 static PidginThemeFont *
  57 pidgin_theme_font_parse(PurpleXmlNode *node)
  58 {
  59         const char *font;
  60         const char *colordesc;
  61         GdkRGBA color;
  62
  63         font = purple_xmlnode_get_attrib(node, "font");
  64
  65         if ((colordesc = purple_xmlnode_get_attrib(node, "color")) == NULL ||
  66                         !gdk_rgba_parse(&color, colordesc))
  67                 gdk_rgba_parse(&color, DEFAULT_TEXT_COLOR);
  68
  69         return pidgin_theme_font_new(font, &color);
  70 }
  71
  72 static GdkRGBA *
  73 parse_color(PurpleXmlNode *node, const char *tag)
  74 {
  75         const char *temp = purple_xmlnode_get_attrib(node, tag);
  76         GdkRGBA color;
  77
  78         if (temp && gdk_rgba_parse(&color, temp)) {
  79                 return gdk_rgba_copy(&color);
  80         } else {
  81                 return NULL;
  82         }
  83 }
  84
  85 static PurpleTheme *
  86 pidgin_blist_loader_build(const gchar *theme_dir)
  87 {
  88         PurpleXmlNode *root_node = NULL, *sub_node, *sub_sub_node;
  89         gchar *dir, *filename_full, *data = NULL;
  90         const gchar *temp, *name;
  91         gboolean success = TRUE;
  92         GdkRGBA *bgcolor, *expanded_bgcolor, *collapsed_bgcolor, *contact_color;
  93         PidginThemeFont *expanded, *collapsed, *contact, *online, *away, *offline, *idle, *message, *message_nick_said, *status;
  94         PidginBlistLayout layout;
  95         PidginBlistTheme *theme;
  96         int i;
  97         struct {
  98                 const char *tag;
  99                 PidginThemeFont **font;
 100         } lookups[] = {
 101                 {"contact_text", &contact},
 102                 {"online_text", &online},
 103                 {"away_text", &away},
 104                 {"offline_text", &offline},
 105                 {"idle_text", &idle},
 106                 {"message_text", &message},
 107                 {"message_nick_said_text", &message_nick_said},
 108                 {"status_text", &status},
 109                 {NULL, NULL}
 110         };
 111
 112         bgcolor = expanded_bgcolor = collapsed_bgcolor = contact_color = NULL;
 113         expanded          = NULL;
 114         collapsed         = NULL;
 115         contact           = NULL;
 116         online            = NULL;
 117         away              = NULL;
 118         offline           = NULL;
 119         idle              = NULL;
 120         message           = NULL;
 121         message_nick_said = NULL;
 122         status            = NULL;
 123
 124         /* Find the theme file */
 125         g_return_val_if_fail(theme_dir != NULL, NULL);
 126         dir = g_build_filename(theme_dir, "purple", "blist", NULL);
 127         filename_full = g_build_filename(dir, "theme.xml", NULL);
 128
 129         if (g_file_test(filename_full, G_FILE_TEST_IS_REGULAR))
 130                 root_node = purple_xmlnode_from_file(dir, "theme.xml", "buddy list themes", "blist-loader");
 131
 132         g_free(filename_full);
 133         if (root_node == NULL) {
 134                 g_free(dir);
 135                 return NULL;
 136         }
 137
 138         sub_node = purple_xmlnode_get_child(root_node, "description");
 139         data = purple_xmlnode_get_data(sub_node);
 140
 141         name = purple_xmlnode_get_attrib(root_node, "name");
 142
 143         /* <blist> */
 144         success = name && purple_strequal(purple_xmlnode_get_attrib(root_node, "type"), "pidgin buddy list");
 145
 146         if (!success)
 147                 purple_debug_warning("gtkblist-theme-loader", "Missing attribute or problem with the root element\n");
 148
 149         if (success) {
 150                 if ((success = (sub_node = purple_xmlnode_get_child(root_node, "blist")) != NULL))
 151                         bgcolor = parse_color(sub_node, "color");
 152                 else
 153                         purple_debug_warning("gtkblist-theme-loader", "Missing or problem with tags: <blist>.\n");
 154         }
 155
 156         /* <groups> */
 157         if (success) {
 158                 if ((success = (sub_node = purple_xmlnode_get_child(root_node, "groups")) != NULL
 159                              && (sub_sub_node = purple_xmlnode_get_child(sub_node, "expanded")) != NULL)) {
 160                         expanded = pidgin_theme_font_parse(sub_sub_node);
 161                         expanded_bgcolor = parse_color(sub_sub_node, "background");
 162                 } else
 163                         purple_debug_warning("gtkblist-theme-loader", "Missing or problem with tags: <groups> <expanded>.\n");
 164         }
 165
 166         if (success) {
 167                 if ((success = sub_node != NULL && (sub_sub_node = purple_xmlnode_get_child(sub_node, "collapsed")) != NULL)) {
 168                         collapsed = pidgin_theme_font_parse(sub_sub_node);
 169                         collapsed_bgcolor = parse_color(sub_sub_node, "background");
 170                 } else
 171                         purple_debug_warning("gtkblist-theme-loader", "Missing or problem with tags: <groups> <collapsed>.\n");
 172         }
 173
 174         /* <buddys> */
 175         if (success) {
 176                 if ((success = (sub_node = purple_xmlnode_get_child(root_node, "buddys")) != NULL &&
 177                              (sub_sub_node = purple_xmlnode_get_child(sub_node, "placement")) != NULL)) {
 178
 179                         layout.status_icon = (temp = purple_xmlnode_get_attrib(sub_sub_node, "status_icon")) != NULL ? atoi(temp) : 0;
 180                         layout.text = (temp = purple_xmlnode_get_attrib(sub_sub_node, "name")) != NULL ? atoi(temp) : 1;
 181                         layout.emblem = (temp = purple_xmlnode_get_attrib(sub_sub_node, "emblem")) != NULL ? atoi(temp) : 2;
 182                         layout.protocol_icon = (temp = purple_xmlnode_get_attrib(sub_sub_node, "protocol_icon")) != NULL ? atoi(temp) : 3;
 183                         layout.buddy_icon = (temp = purple_xmlnode_get_attrib(sub_sub_node, "buddy_icon")) != NULL ? atoi(temp) : 4;
 184                         layout.show_status = (temp = purple_xmlnode_get_attrib(sub_sub_node, "status_icon")) != NULL ? atoi(temp) != 0 : 1;
 185
 186                 } else purple_debug_warning("gtkblist-theme-loader", "Missing or problem with tags: <buddys> <placement>.\n");
 187         }
 188
 189         if (success) {
 190                 if ((success = (sub_node != NULL && (sub_sub_node = purple_xmlnode_get_child(sub_node, "background")) != NULL)))
 191                         contact_color = parse_color(sub_sub_node, "color");
 192                 else
 193                         purple_debug_warning("gtkblist-theme-loader", "Missing or problem with tags: <buddys> <background>.\n");
 194         }
 195
 196         for (i = 0; success && lookups[i].tag; i++) {
 197                 if ((success = (sub_node != NULL &&
 198                                                 (sub_sub_node = purple_xmlnode_get_child(sub_node, lookups[i].tag)) != NULL))) {
 199                         *(lookups[i].font) = pidgin_theme_font_parse(sub_sub_node);
 200                 } else {
 201                         *(lookups[i].font) = NULL;
 202                 }
 203         }
 204
 205         /* name is required for theme manager */
 206         success = (success && purple_xmlnode_get_attrib(root_node, "name") != NULL);
 207
 208         /* the new theme */
 209         theme = g_object_new(PIDGIN_TYPE_BLIST_THEME,
 210                         "type", "blist",
 211                         "name", name,
 212                         "author", purple_xmlnode_get_attrib(root_node, "author"),
 213                         "image", purple_xmlnode_get_attrib(root_node, "image"),
 214                         "directory", dir,
 215                         "description", data,
 216                         "background-color", bgcolor,
 217                         "layout", &layout,
 218                         "expanded-color", expanded_bgcolor,
 219                         "expanded-text", expanded,
 220                         "collapsed-color", collapsed_bgcolor,
 221                         "collapsed-text", collapsed,
 222                         "contact-color", contact_color,
 223                         "contact", contact,
 224                         "online", online,
 225                         "away", away,
 226                         "offline", offline,
 227                         "idle", idle,
 228                         "message", message,
 229                         "message-nick-said", message_nick_said,
 230                         "status", status, NULL);
 231
 232         for (i = 0; lookups[i].tag; i++) {
 233                 if (*lookups[i].font) {
 234                         pidgin_theme_font_free(*lookups[i].font);
 235                 }
 236         }
 237
 238         pidgin_theme_font_free(expanded);
 239         pidgin_theme_font_free(collapsed);
 240
 241         purple_xmlnode_free(root_node);
 242         g_free(data);
 243         g_free(dir);
 244
 245         /* malformed xml file - also frees all partial data*/
 246         if (!success) {
 247                 g_object_unref(theme);
 248                 theme = NULL;
 249         }
 250
 251         if (bgcolor)
 252                 gdk_rgba_free(bgcolor);
 253         if (expanded_bgcolor)
 254                 gdk_rgba_free(expanded_bgcolor);
 255         if (collapsed_bgcolor)
 256                 gdk_rgba_free(collapsed_bgcolor);
 257         if (contact_color)
 258                 gdk_rgba_free(contact_color);
 259
 260         return PURPLE_THEME(theme);
 261 }
 262
 263 /******************************************************************************
 264  * GObject Stuff
 265  *****************************************************************************/
 266
 267 static void
 268 pidgin_blist_theme_loader_class_init(PidginBlistThemeLoaderClass *klass)
 269 {
 270         PurpleThemeLoaderClass *loader_klass = PURPLE_THEME_LOADER_CLASS(klass);
 271
 272         loader_klass->purple_theme_loader_build = pidgin_blist_loader_build;
 273 }
 274
 275 GType
 276 pidgin_blist_theme_loader_get_type(void)
 277 {
 278         static GType type = 0;
 279         if (type == 0) {
 280                 static const GTypeInfo info = {
 281                         sizeof(PidginBlistThemeLoaderClass),
 282                         NULL, /* base_init */
 283                         NULL, /* base_finalize */
 284                         (GClassInitFunc)pidgin_blist_theme_loader_class_init, /* class_init */
 285                         NULL, /* class_finalize */
 286                         NULL, /* class_data */
 287                         sizeof(PidginBlistThemeLoader),
 288                         0, /* n_preallocs */
 289                         NULL, /* instance_init */
 290                         NULL, /* value table */
 291                 };
 292                 type = g_type_register_static(PURPLE_TYPE_THEME_LOADER,
 293                                 "PidginBlistThemeLoader", &info, 0);
 294         }
 295         return type;
 296 }