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