src/prefs_themes.c

   1 /*
   2  * Claws Mail -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 2003-2015 Hiroyuki Yamamoto & the Claws Mail team
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 3 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #ifdef HAVE_CONFIG_H
  20 #  include <config.h>
  21 #endif
  22
  23 #include "defs.h"
  24
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <string.h>
  28 #include <sys/stat.h>
  29 #ifdef HAVE_SVG
  30 #include <math.h>
  31 #endif
  32
  33 #include <glib.h>
  34 #include <glib/gi18n.h>
  35 #include <gtk/gtk.h>
  36
  37 #include "utils.h"
  38 #include "codeconv.h"
  39 #include "prefs_common.h"
  40 #include "prefs_gtk.h"
  41
  42 #include "gtk/gtkutils.h"
  43 #include "gtk/prefswindow.h"
  44 #include "gtk/filesel.h"
  45
  46 #include "stock_pixmap.h"
  47 #include "mainwindow.h"
  48 #include "compose.h"
  49 #include "alertpanel.h"
  50 #include "addr_compl.h"
  51
  52 #define IS_CURRENT_THEME(path)  (strcmp(prefs_common.pixmap_theme_path, path) == 0)
  53 #define IS_INTERNAL_THEME(path) (strcmp(DEFAULT_PIXMAP_THEME, path) == 0)
  54 #define IS_SYSTEM_THEME(path)   (prefs_themes_is_system_theme(path))
  55
  56 #define PREVIEW_ICONS 7
  57
  58 typedef struct _ThemesPage
  59 {
  60         PrefsPage page;
  61
  62         GtkWidget *window;              /* do not modify */
  63
  64         GtkWidget *op_menu;
  65         GtkWidget *btn_install;
  66         GtkWidget *btn_more;
  67         GtkWidget *global;
  68
  69         GtkWidget *name;
  70         GtkWidget *author;
  71         GtkWidget *url;
  72         GtkWidget *status;
  73
  74         GtkWidget *icons[PREVIEW_ICONS];
  75
  76         GtkWidget *btn_remove;
  77
  78         GdkPixbuf *pixbufs[PREVIEW_ICONS];
  79
  80 #ifdef HAVE_SVG
  81         GtkWidget *checkbtn_enable_alpha;
  82         GtkWidget *checkbtn_enable_scaling;
  83         GtkWidget *checkbtn_scaling_auto;
  84         GtkWidget *label_scaling_ppi;
  85         GtkWidget *spinbtn_scaling_ppi;
  86 #endif
  87 } ThemesPage;
  88
  89 typedef struct _ThemeInfo
  90 {
  91         gchar *name;
  92         gchar *author;
  93         gchar *url;
  94         gchar *status;
  95 } ThemeInfo;
  96
  97 typedef struct _ThemeName
  98 {
  99         gchar *name;
 100         GList *item;
 101 } ThemeName;
 102
 103 typedef struct _ThemesData
 104 {
 105         GList      *themes;
 106         GList      *names;
 107         gchar      *displayed;
 108         ThemesPage *page;
 109 } ThemesData;
 110
 111 typedef void (*FileFunc) (const gchar *filename, gpointer data);
 112
 113 typedef struct _DirInfo {
 114         gint bytes;
 115         gint files;
 116         gint pixms;
 117         /* extensions info */
 118         const char **supported;
 119         gint *length;
 120 } DirInfo;
 121
 122 typedef struct _CopyInfo {
 123         gchar *dest;
 124         gchar *status;
 125 } CopyInfo;
 126
 127 static ThemesData *prefs_themes_data;
 128
 129 StockPixmap prefs_themes_icons[PREVIEW_ICONS] = {
 130         STOCK_PIXMAP_DIR_CLOSE,
 131         STOCK_PIXMAP_MAIL_SEND,
 132         STOCK_PIXMAP_MAIL_RECEIVE,
 133         STOCK_PIXMAP_MAIL_ATTACH,
 134         STOCK_PIXMAP_BOOK,
 135         STOCK_PIXMAP_MIME_TEXT_PLAIN,
 136         STOCK_PIXMAP_REPLIED
 137 };
 138
 139
 140
 141 static void prefs_themes_btn_remove_clicked_cb  (GtkWidget *widget, gpointer data);
 142 static void prefs_themes_btn_install_clicked_cb (GtkWidget *widget, gpointer data);
 143 static void prefs_themes_menu_item_activated_cb (GtkWidget *widget, gpointer data);
 144 #ifdef HAVE_SVG
 145 static gdouble prefs_themes_compute_ppi(GdkScreen *screen);
 146 static gdouble prefs_themes_get_adjusted_ppi(void);
 147 static void prefs_themes_checkbtn_enable_scaling_toggled_cb (GtkWidget *widget, gpointer data);
 148 static void prefs_themes_checkbtn_scaling_auto_toggled_cb (GtkWidget *widget, gpointer data);
 149 #endif
 150
 151 static void prefs_themes_update_buttons         (const ThemesData *tdata);
 152 static void prefs_themes_display_global_stats   (const ThemesData *tdata);
 153 static void prefs_themes_get_theme_info         (ThemesData *tdata);
 154 static void prefs_themes_display_theme_info     (ThemesData *tdata, const ThemeInfo *info);
 155 static void prefs_themes_get_themes_and_names   (ThemesData *tdata);
 156 static int prefs_themes_cmp_name(gconstpointer a, gconstpointer b);
 157 static void prefs_themes_free_names             (ThemesData *tdata);
 158
 159 static void prefs_themes_set_themes_menu        (GtkComboBox *combo, const ThemesData *tdata);
 160
 161 static gchar *prefs_themes_get_theme_stats      (const gchar *dirname);
 162 static gboolean prefs_themes_is_system_theme    (const gchar *dirname);
 163
 164 static void prefs_themes_create_widget          (PrefsPage *page, GtkWindow *window, gpointer data);
 165 static void prefs_themes_destroy_widget         (PrefsPage *page);
 166 static void prefs_themes_save                   (PrefsPage *page);
 167
 168 static void prefs_themes_foreach_file           (const gchar *dirname, const FileFunc func, gpointer data);
 169 static void prefs_themes_file_stats             (const gchar *filename, gpointer data);
 170 static void prefs_themes_file_remove            (const gchar *filename, gpointer data);
 171 static void prefs_themes_file_install           (const gchar *filename, gpointer data);
 172
 173
 174
 175 static void prefs_themes_file_stats(const gchar *filename, gpointer data)
 176 {
 177         GStatBuf s;
 178         DirInfo *di = (DirInfo *)data;
 179         gint len;
 180         gint i;
 181
 182         if (0 == g_stat(filename, &s) && 0 != S_ISREG(s.st_mode)) {
 183                 di->bytes += s.st_size;
 184                 di->files++;
 185                 len = strlen(filename);
 186                 for (i = 0; (di->supported)[i] != NULL; ++i) {
 187                         gint curlen = (di->length)[i];
 188                         if (len <= curlen)
 189                                 continue;
 190                         const gchar *extension = filename + (len - curlen);
 191                         if (!strcmp(extension, (di->supported)[i])) {
 192                                 di->pixms++;
 193                                 break;
 194                         }
 195                 }
 196         }
 197 }
 198
 199 static void prefs_themes_file_remove(const gchar *filename, gpointer data)
 200 {
 201         gchar **status = (gchar **)data;
 202         gchar *base;
 203
 204         if ((*status) != NULL)
 205                 return;
 206
 207         base = g_path_get_basename(filename);
 208         if (TRUE == is_dir_exist(filename)) {
 209                 if (strcmp(base, ".") != 0 && strcmp(base, "..") != 0)
 210                         g_warning("prefs_themes_file_remove(): subdir in theme dir skipped: '%s'.",
 211                                                 base);
 212         }
 213         else if (0 != claws_unlink(filename)) {
 214                 (*status) = g_strdup(filename);
 215         }
 216         g_free(base);
 217 }
 218
 219 static void prefs_themes_file_install(const gchar *filename, gpointer data)
 220 {
 221         CopyInfo *ci = (CopyInfo *)data;
 222         gchar *base;
 223
 224         if (ci->status != NULL)
 225                 return;
 226
 227         base = g_path_get_basename(filename);
 228         if (TRUE == is_dir_exist(filename)) {
 229                 if (strcmp(base, ".") != 0 && strcmp(base, "..") !=0 )
 230                         g_warning("prefs_themes_file_install(): subdir in theme dir skipped: '%s'.",
 231                                                 base);
 232         }
 233         else {
 234                 gchar *fulldest;
 235
 236                 fulldest = g_strconcat(ci->dest, G_DIR_SEPARATOR_S, base, NULL);
 237
 238                 if (0 != copy_file(filename, fulldest, FALSE)) {
 239                         ci->status = g_strdup(filename);
 240                 }
 241                 g_free(fulldest);
 242         }
 243         g_free(base);
 244 }
 245
 246 static void prefs_themes_foreach_file(const gchar *dirname, const FileFunc func, gpointer data)
 247 {
 248         const gchar *entry;
 249         gchar *fullentry;
 250         GDir *dp;
 251         GError *error = NULL;
 252
 253         cm_return_if_fail(dirname != NULL);
 254         cm_return_if_fail(func != NULL);
 255
 256         if ((dp = g_dir_open(dirname, 0, &error)) == NULL) {
 257                 debug_print("couldn't open dir '%s': %s (%d)\n", dirname,
 258                                 error->message, error->code);
 259                 g_error_free(error);
 260                 return;
 261         }
 262
 263         while ((entry = g_dir_read_name(dp)) != NULL) {
 264
 265                 fullentry = g_strconcat(dirname, G_DIR_SEPARATOR_S, entry, NULL);
 266
 267                 (*func)(fullentry, data);
 268
 269                 g_free(fullentry);
 270         }
 271         g_dir_close(dp);
 272 }
 273
 274 static gboolean prefs_themes_is_system_theme(const gchar *dirname)
 275 {
 276         gint len;
 277         gchar *system_theme_dir;
 278         gboolean is_sys = FALSE;
 279
 280         cm_return_val_if_fail(dirname != NULL, FALSE);
 281
 282         system_theme_dir = stock_pixmap_get_system_theme_dir_for_theme(NULL);
 283         len = strlen(system_theme_dir);
 284         if (strlen(dirname) > len && 0 == strncmp(dirname, system_theme_dir, len))
 285                 is_sys = TRUE;
 286
 287         g_free(system_theme_dir);
 288
 289         return is_sys;
 290 }
 291
 292 static void prefs_themes_set_themes_menu(GtkComboBox *combo, const ThemesData *tdata)
 293 {
 294         GtkListStore *store;
 295         GtkTreeIter iter;
 296         GList     *themes = tdata->names;
 297         gint       i = 0, active = 0;
 298         GList     *sorted_list = NULL;
 299
 300         cm_return_if_fail(combo != NULL);
 301
 302         /* sort theme data list by data name */
 303         while (themes != NULL) {
 304                 ThemeName *tname = (ThemeName *)(themes->data);
 305
 306                 sorted_list = g_list_insert_sorted(sorted_list, (gpointer)(tname),
 307                                                    (GCompareFunc)prefs_themes_cmp_name);
 308
 309                 themes = g_list_next(themes);
 310         }
 311
 312         store = gtk_list_store_new(2, G_TYPE_STRING, G_TYPE_POINTER);
 313
 314         /* feed gtk_menu w/ sorted themes names */
 315         themes = sorted_list;
 316         while (themes != NULL) {
 317                 ThemeName *tname = (ThemeName *)(themes->data);
 318                 gchar     *tpath = (gchar *)(tname->item->data);
 319
 320                 gtk_list_store_append(store, &iter);
 321                 gtk_list_store_set(store, &iter,
 322                                    0, tname->name,
 323                                    1, tname->item->data, -1);
 324
 325                 if (tdata->displayed != NULL && !strcmp2(tdata->displayed,tpath))
 326                         active = i;
 327                 ++i;
 328
 329                 themes = g_list_next(themes);
 330         }
 331
 332         g_list_free(sorted_list);
 333
 334         g_signal_connect(G_OBJECT(combo), "changed",
 335                          G_CALLBACK(prefs_themes_menu_item_activated_cb),
 336                          NULL);
 337
 338         gtk_combo_box_set_model(combo, GTK_TREE_MODEL(store));
 339         gtk_combo_box_set_active(combo, active);
 340 }
 341
 342 static int prefs_themes_cmp_name(gconstpointer a_p, gconstpointer b_p)
 343 {
 344         /* compare two ThemeData structures by their name attribute */
 345         return strcmp2((gchar *)(((ThemeName*)a_p)->name),
 346                                         (gchar *)(((ThemeName*)b_p)->name));
 347 }
 348
 349 static void prefs_themes_get_themes_and_names(ThemesData *tdata)
 350 {
 351         GList *tpaths;
 352
 353         cm_return_if_fail(tdata != NULL);
 354
 355         stock_pixmap_themes_list_free(tdata->themes);
 356         prefs_themes_free_names(tdata);
 357
 358         tdata->themes = stock_pixmap_themes_list_new();
 359
 360         tpaths = tdata->themes;
 361         while (tpaths != NULL) {
 362                 ThemeName *name = g_new0(ThemeName, 1);
 363                 gchar *sname = g_path_get_basename((const gchar *)(tpaths->data));
 364
 365                 if (IS_INTERNAL_THEME(sname))
 366                         name->name = g_strdup(_("Default internal theme"));
 367                 else
 368                         name->name = g_strdup(sname);
 369                 name->item = tpaths;
 370
 371                 tdata->names = g_list_append(tdata->names, name);
 372                 if (!strcmp2(tpaths->data, prefs_common.pixmap_theme_path)) {
 373                         tdata->displayed = (gchar *)tpaths->data;
 374                 }
 375                 tpaths = g_list_next(tpaths);
 376                 g_free(sname);
 377         }
 378 }
 379
 380 void prefs_themes_init(void)
 381 {
 382         ThemesData   *tdata;
 383         ThemesPage   *page;
 384         GList        *tpaths;
 385         static gchar *path[3];
 386
 387         path[0] = _("Display");
 388         path[1] = _("Themes");
 389         path[2] = NULL;
 390
 391         debug_print("Creating preferences for themes...\n");
 392
 393         tdata = g_new0(ThemesData, 1);
 394         prefs_themes_data = tdata;
 395
 396         prefs_themes_get_themes_and_names(tdata);
 397
 398         page = g_new0(ThemesPage, 1);
 399
 400         page->page.path = path;
 401         page->page.create_widget = prefs_themes_create_widget;
 402         page->page.destroy_widget = prefs_themes_destroy_widget;
 403         page->page.save_page = prefs_themes_save;
 404         page->page.weight = 130.0;
 405         prefs_gtk_register_page((PrefsPage *) page);
 406
 407         tdata->page = page;
 408
 409         tpaths = g_list_first(tdata->themes);
 410         if (tdata->displayed == NULL)
 411                 tdata->displayed = (gchar *)(tpaths->data);
 412 #ifdef HAVE_SVG
 413         if (prefs_common.pixmap_scaling_auto)
 414                 prefs_common.pixmap_scaling_ppi = prefs_themes_get_adjusted_ppi();
 415 #endif
 416 }
 417
 418 static void prefs_themes_free_names(ThemesData *tdata)
 419 {
 420         GList *names;
 421
 422         cm_return_if_fail(tdata != NULL);
 423
 424         if (tdata->names == NULL)
 425                 return;
 426
 427         names = tdata->names;
 428         while (names != NULL) {
 429                 ThemeName *tn = (ThemeName *)(names->data);
 430
 431                 tn->item = NULL;
 432                 g_free(tn->name);
 433                 g_free(tn);
 434
 435                 names = g_list_next(names);
 436         }
 437         g_list_free(tdata->names);
 438         tdata->names = NULL;
 439 }
 440
 441 void prefs_themes_done(void)
 442 {
 443         ThemesData *tdata = prefs_themes_data;
 444
 445         debug_print("Finished preferences for themes.\n");
 446
 447         stock_pixmap_themes_list_free(tdata->themes);
 448         prefs_themes_free_names(tdata);
 449         g_free(tdata->page);
 450         g_free(tdata);
 451 }
 452
 453 static void prefs_themes_btn_remove_clicked_cb(GtkWidget *widget, gpointer data)
 454 {
 455         ThemesData *tdata = prefs_themes_data;
 456         gchar      *theme_str;
 457         gchar      *alert_title = NULL;
 458         AlertValue  val = 0;
 459         gchar      *tmp = NULL;
 460
 461         theme_str = tdata->displayed;
 462
 463         tmp = g_path_get_basename(theme_str);
 464
 465         if (IS_SYSTEM_THEME(theme_str)) {
 466                 if (!superuser_p()) {
 467                         alertpanel_error(_("Only root can remove system themes"));
 468                         return;
 469                 }
 470                 alert_title = g_strdup_printf(_("Remove system theme '%s'"), tmp);
 471         }
 472         if (NULL == alert_title) {
 473                 alert_title = g_strdup_printf(_("Remove theme '%s'"), tmp);
 474         }
 475
 476         g_free(tmp);
 477
 478         val = alertpanel(alert_title,
 479                          _("Are you sure you want to remove this theme?"),
 480                          GTK_STOCK_NO, GTK_STOCK_YES, NULL);
 481         g_free(alert_title);
 482
 483         if (G_ALERTALTERNATE == val) {
 484                 gchar *status = NULL;
 485
 486                 prefs_themes_foreach_file(theme_str, prefs_themes_file_remove, &status);
 487                 if (0 != rmdir(theme_str)) {
 488                         if (status != NULL) {
 489                                 alertpanel_error(_("File %s failed\nwhile removing theme."), status);
 490                                 g_free(status);
 491                         }
 492                         else
 493                                 alertpanel_error(_("Removing theme directory failed."));
 494                 }
 495                 else {
 496                         alertpanel_notice(_("Theme removed successfully"));
 497                         /* update interface back to first theme */
 498                         prefs_themes_get_themes_and_names(tdata);
 499                         prefs_themes_set_themes_menu(GTK_COMBO_BOX(tdata->page->op_menu), tdata);
 500                         prefs_themes_display_global_stats(tdata);
 501                         tdata->displayed = (gchar *)((g_list_first(tdata->themes))->data);
 502                         prefs_themes_get_theme_info(tdata);
 503                 }
 504         }
 505 }
 506
 507 static void prefs_themes_btn_install_clicked_cb(GtkWidget *widget, gpointer data)
 508 {
 509         gchar      *filename, *source;
 510         gchar      *themeinfo, *themename;
 511         gchar      *alert_title = NULL;
 512         CopyInfo   *cinfo;
 513         AlertValue  val = 0;
 514         ThemesData *tdata = prefs_themes_data;
 515
 516         filename = filesel_select_file_open_folder(_("Select theme folder"), NULL);
 517         if (filename == NULL)
 518                 return;
 519
 520         if (filename[strlen(filename) - 1] != G_DIR_SEPARATOR)
 521                 filename = g_strconcat(filename, G_DIR_SEPARATOR_S, NULL);
 522         else
 523                 filename = g_strdup(filename);
 524
 525         cinfo = g_new0(CopyInfo, 1);
 526         source = g_path_get_dirname(filename);
 527         themename = g_path_get_basename(source);
 528         debug_print("Installing '%s' theme from %s\n", themename, filename);
 529
 530         themeinfo = g_strconcat(source, G_DIR_SEPARATOR_S, THEMEINFO_FILE, NULL);
 531         alert_title = g_strdup_printf(_("Install theme '%s'"), themename);
 532         if (file_exist(themeinfo, FALSE) == FALSE) {
 533                 val = alertpanel(alert_title,
 534                                  _("This folder doesn't seem to be a theme folder.\nInstall anyway?"),
 535                                  GTK_STOCK_NO, GTK_STOCK_YES, NULL);
 536                 if (G_ALERTALTERNATE != val)
 537                         goto end_inst;
 538         }
 539         if (superuser_p ()) {
 540                 val = alertpanel(alert_title,
 541                                  _("Do you want to install theme for all users?"),
 542                                  GTK_STOCK_NO, GTK_STOCK_YES, NULL);
 543                 switch (val) {
 544                 case G_ALERTALTERNATE:
 545                         cinfo->dest = stock_pixmap_get_system_theme_dir_for_theme(
 546                                                 themename);
 547                         break;
 548                 case G_ALERTDEFAULT:
 549                         break;
 550                 default:
 551                         goto end_inst;
 552                 }
 553         }
 554         g_free(alert_title);
 555         if (cinfo->dest == NULL) {
 556                 cinfo->dest = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
 557                                           PIXMAP_THEME_DIR, G_DIR_SEPARATOR_S,
 558                                           themename, NULL);
 559         }
 560         if (TRUE == is_dir_exist(cinfo->dest)) {
 561                 AlertValue val = alertpanel_full(_("Theme exists"),
 562                                 _("A theme with the same name is\nalready installed in this location.\n\n"
 563                                   "Do you want to replace it?"),
 564                                 GTK_STOCK_CANCEL, _("Overwrite"), NULL, FALSE,
 565                                 NULL, ALERT_WARNING, G_ALERTDEFAULT);
 566                 if (val == G_ALERTALTERNATE) {
 567                         if (remove_dir_recursive(cinfo->dest) < 0) {
 568                                 alertpanel_error(_("Couldn't delete the old theme in %s."), cinfo->dest);
 569                                 goto end_inst;
 570                         }
 571                 } else {
 572                         goto end_inst;
 573                 }
 574         }
 575         if (0 != make_dir_hier(cinfo->dest)) {
 576                 alertpanel_error(_("Couldn't create destination directory %s."), cinfo->dest);
 577                 goto end_inst;
 578         }
 579         prefs_themes_foreach_file(source, prefs_themes_file_install, cinfo);
 580         if (cinfo->status == NULL) {
 581                 GList *insted;
 582
 583                 /* update interface to show newly installed theme */
 584                 prefs_themes_get_themes_and_names(tdata);
 585                 insted = g_list_find_custom(tdata->themes,
 586                                             (gpointer)(cinfo->dest),
 587                                             (GCompareFunc)strcmp2);
 588                 if (NULL != insted) {
 589                         alertpanel_notice(_("Theme installed successfully."));
 590                         tdata->displayed = (gchar *)(insted->data);
 591                         prefs_themes_set_themes_menu(GTK_COMBO_BOX(tdata->page->op_menu), tdata);
 592                         prefs_themes_display_global_stats(tdata);
 593                         prefs_themes_get_theme_info(tdata);
 594                 }
 595                 else
 596                         alertpanel_error(_("Failed installing theme"));
 597         }
 598         else
 599                 alertpanel_error(_("File %s failed\nwhile installing theme."), cinfo->status);
 600 end_inst:
 601         g_free(cinfo->dest);
 602         g_free(filename);
 603         g_free(source);
 604         g_free(themeinfo);
 605         g_free(cinfo);
 606         g_free(themename);
 607 }
 608
 609 static void prefs_themes_menu_item_activated_cb(GtkWidget *widget, gpointer data)
 610 {
 611         ThemesData *tdata = prefs_themes_data;
 612         gchar      *path;
 613         GtkTreeModel *model;
 614         GtkTreeIter iter;
 615
 616         cm_return_if_fail(gtk_combo_box_get_active_iter(GTK_COMBO_BOX(widget), &iter));
 617
 618         model = gtk_combo_box_get_model(GTK_COMBO_BOX(widget));
 619         gtk_tree_model_get(model, &iter, 1, &path, -1);
 620
 621         tdata->displayed = path;
 622         prefs_themes_get_theme_info(tdata);
 623 }
 624
 625 #ifdef HAVE_SVG
 626 #define MM_INCH 0.0393700787402
 627 static gdouble prefs_themes_compute_ppi(GdkScreen *screen)
 628 {
 629         gdouble wp = gdk_screen_get_width(screen);
 630         gdouble hp = gdk_screen_get_height(screen);
 631         gdouble wi = gdk_screen_get_width_mm(screen);
 632         gdouble hi = gdk_screen_get_height_mm(screen);
 633         gdouble dp, di;
 634
 635         debug_print("screen is %f x %f pixels, %f x %f mm\n", wp, hp, wi, hi);
 636
 637         /* https://en.wikipedia.org/wiki/Pixel_density */
 638         wi *= MM_INCH;
 639         hi *= MM_INCH;
 640         dp = sqrt(wp * wp + hp * hp);
 641         di = sqrt(wi * wi + hi * hi);
 642
 643         return (di != 0.0)? dp / di: 0.0;
 644 }
 645
 646 static gdouble prefs_themes_get_adjusted_ppi(void)
 647 {
 648         gdouble ppi, cppi;
 649         GdkScreen * screen = gdk_screen_get_default();
 650
 651         if (screen == NULL) { /* oops! */
 652                 g_warning("unable to get default GDK screen");
 653                 return MIN_PPI;
 654         }
 655
 656         ppi = gdk_screen_get_resolution(screen);
 657         cppi = prefs_themes_compute_ppi(screen);
 658         debug_print("returned PPI: %f / computed PPI: %f\n", ppi, cppi);
 659         /*
 660          gdk_screen_get_resolution doesn't seem to work well when running
 661          on a remote display and returns the value of the local display.
 662          height/width functions do this better, so we can compute a PPI
 663          from them and take the highest value.
 664         */
 665         return MAX(ppi, cppi);
 666 }
 667
 668 static void prefs_themes_checkbtn_enable_scaling_toggled_cb (GtkWidget *widget, gpointer data)
 669 {
 670         ThemesPage *page = (ThemesPage *) data;
 671         gboolean enabled = gtk_toggle_button_get_active(
 672                                 GTK_TOGGLE_BUTTON (widget));
 673         gboolean automatic = gtk_toggle_button_get_active(
 674                                 GTK_TOGGLE_BUTTON (page->checkbtn_scaling_auto));
 675
 676         gtk_widget_set_sensitive(page->checkbtn_scaling_auto, enabled);
 677         gtk_widget_set_sensitive(page->spinbtn_scaling_ppi, enabled && !automatic);
 678         gtk_widget_set_sensitive(page->label_scaling_ppi, enabled && !automatic);
 679 }
 680
 681 static void prefs_themes_checkbtn_scaling_auto_toggled_cb(GtkWidget *widget, gpointer data)
 682 {
 683         ThemesPage *page = (ThemesPage *) data;
 684         gboolean automatic = gtk_toggle_button_get_active(
 685                                 GTK_TOGGLE_BUTTON (widget));
 686
 687         gtk_widget_set_sensitive(page->spinbtn_scaling_ppi, !automatic);
 688         gtk_widget_set_sensitive(page->label_scaling_ppi, !automatic);
 689
 690         if (automatic) /* update PPI value */
 691                 gtk_spin_button_set_value(
 692                                 GTK_SPIN_BUTTON (page->spinbtn_scaling_ppi),
 693                                 prefs_themes_get_adjusted_ppi());
 694 }
 695 #endif
 696
 697 static void prefs_themes_update_buttons(const ThemesData *tdata)
 698 {
 699         ThemesPage *theme = tdata->page;
 700         gboolean    can_rem, can_use;
 701
 702         can_use = !IS_CURRENT_THEME(tdata->displayed);
 703         can_rem = can_use && !IS_INTERNAL_THEME(tdata->displayed);
 704
 705         if (theme->btn_remove != NULL)
 706                 gtk_widget_set_sensitive(theme->btn_remove, can_rem);
 707 }
 708
 709 /* placeholders may already be utf8 (i18n) */
 710 #define SET_LABEL_TEXT_UTF8(label, text)                                \
 711 {                                                                       \
 712         gchar *tmpstr;                                                  \
 713                                                                         \
 714         if (!g_utf8_validate(text, -1, NULL))                           \
 715                 tmpstr = conv_codeset_strdup(text,                      \
 716                         conv_get_locale_charset_str(),  CS_UTF_8);      \
 717         else                                                            \
 718                 tmpstr = g_strdup(text);                                \
 719                                                                         \
 720         gtk_label_set_text(GTK_LABEL(label), tmpstr);                   \
 721         gtk_label_set_selectable(GTK_LABEL(label), TRUE);               \
 722         g_free(tmpstr);                                                 \
 723 }
 724 static void prefs_themes_display_theme_info(ThemesData *tdata, const ThemeInfo *info)
 725 {
 726         ThemesPage *theme = tdata->page;
 727         gchar *save_prefs_path;
 728         gint   i;
 729
 730         SET_LABEL_TEXT_UTF8(theme->name,        info->name);
 731         SET_LABEL_TEXT_UTF8(theme->author,      info->author);
 732         SET_LABEL_TEXT_UTF8(theme->url,         info->url);
 733         SET_LABEL_TEXT_UTF8(theme->status,      info->status);
 734
 735         save_prefs_path = prefs_common.pixmap_theme_path;
 736         prefs_common.pixmap_theme_path = tdata->displayed;
 737         for (i = 0; i < PREVIEW_ICONS; ++i) {
 738                 stock_pixbuf_gdk(prefs_themes_icons[i], &(theme->pixbufs[i]));
 739                 gtk_image_set_from_pixbuf(GTK_IMAGE(theme->icons[i]),
 740                                 theme->pixbufs[i]);
 741         }
 742         prefs_common.pixmap_theme_path = save_prefs_path;
 743
 744         prefs_themes_update_buttons(tdata);
 745 }
 746 #undef SET_LABEL_TEXT_UTF8
 747
 748 static void prefs_themes_display_global_stats(const ThemesData *tdata)
 749 {
 750         ThemesPage *theme = tdata->page;
 751         GList      *tnames = tdata->names;
 752         gchar      *gstats;
 753         gint        sys = 0;
 754         gint        usr = 0;
 755         gint        all = 0;
 756
 757         while (tnames != NULL) {
 758                 ThemeName *tname = (ThemeName *)(tnames->data);
 759                 gchar     *tpath = (gchar *)(tname->item->data);
 760
 761                 if (IS_SYSTEM_THEME(tpath))
 762                         ++sys;
 763                 else if (!IS_INTERNAL_THEME(tpath))
 764                         ++usr;
 765                 ++all;
 766                 tnames = g_list_next(tnames);
 767         }
 768
 769         gstats = g_strdup_printf(_("%d themes available (%d user, %d system, 1 internal)"),
 770                                  all, usr, sys);
 771         gtk_label_set_text(GTK_LABEL(theme->global), gstats);
 772         gtk_label_set_justify (GTK_LABEL (theme->global), GTK_JUSTIFY_LEFT);
 773         gtkut_widget_set_small_font_size (theme->global);
 774         g_free(gstats);
 775 }
 776
 777 #define INFOFILE_LINE_LEN 80
 778
 779 #define FGETS_INFOFILE_LINE() \
 780         line[0] = '\0'; \
 781         if (fgets(line, INFOFILE_LINE_LEN, finfo) != NULL && (len = strlen(line)) > 0) { \
 782                 if (line[len - 1] == '\n') line[len - 1] = '\0'; \
 783         } \
 784         else { \
 785                 g_strlcpy(line, _("Unknown"),sizeof(line)); \
 786         }
 787
 788 static void prefs_themes_get_theme_info(ThemesData *tdata)
 789 {
 790         FILE  *finfo;
 791         gchar *sinfo;
 792         gchar *path;
 793         gchar  line[INFOFILE_LINE_LEN];
 794         gint   len;
 795         ThemeInfo *info;
 796         ThemesPage *theme = tdata->page;
 797
 798         cm_return_if_fail(theme != NULL);
 799         path = tdata->displayed;
 800         cm_return_if_fail(path != NULL);
 801
 802         debug_print("Getting theme info for %s\n", path);
 803
 804         info = g_new0(ThemeInfo, 1);
 805
 806         if (IS_INTERNAL_THEME(path)) {
 807                 info->name = g_strdup(_("Default internal theme"));
 808                 info->author = g_strdup(_("The Claws Mail Team"));
 809                 info->url = g_strdup(HOMEPAGE_URI);
 810                 info->status = g_strdup_printf(_("Internal theme has %d icons"), N_STOCK_PIXMAPS);
 811         }
 812         else {
 813                 sinfo = g_strconcat(path, G_DIR_SEPARATOR_S, THEMEINFO_FILE, NULL);
 814                 finfo = g_fopen(sinfo, "r");
 815                 if (finfo == NULL) {
 816                         info->name = g_strdup(_("No info file available for this theme"));
 817                         info->author = g_strdup(_("Unknown"));
 818                         info->url = g_strdup(_("Unknown"));
 819                 }
 820                 else {
 821                         FGETS_INFOFILE_LINE()
 822                         info->name = g_strdup(line);
 823                         FGETS_INFOFILE_LINE()
 824                         info->author = g_strdup(line);
 825                         FGETS_INFOFILE_LINE()
 826                         info->url = g_strdup(line);
 827
 828                         fclose(finfo);
 829                 }
 830                 g_free(sinfo);
 831
 832                 info->status = prefs_themes_get_theme_stats(path);
 833                 if (info->status == NULL) {
 834                         info->status = g_strdup(_("Error: couldn't get theme status"));
 835                 }
 836         }
 837
 838         prefs_themes_display_theme_info(tdata, info);
 839
 840         g_free(info->name);
 841         g_free(info->author);
 842         g_free(info->url);
 843         g_free(info->status);
 844
 845         g_free(info);
 846 }
 847
 848 #undef FGETS_INFOFILE_LINE
 849
 850 static gchar *prefs_themes_get_theme_stats(const gchar *dirname)
 851 {
 852         gchar   *stats;
 853         DirInfo *dinfo;
 854         gint     i;
 855
 856         dinfo = g_new0(DirInfo, 1);
 857         dinfo->supported = stock_pixmap_theme_extensions();
 858         for (i = 0; (dinfo->supported)[i] != NULL; ++i);
 859         dinfo->length = g_malloc(i * sizeof(gint));
 860         for (i = 0; (dinfo->supported)[i] != NULL; ++i) {
 861                 (dinfo->length)[i] = strlen((dinfo->supported)[i]);
 862         }
 863         prefs_themes_foreach_file(dirname, prefs_themes_file_stats, dinfo);
 864         stats = g_strdup_printf(_("%d files (%d icons), size: %s"),
 865                                 dinfo->files, dinfo->pixms,
 866                                 to_human_readable((goffset)dinfo->bytes));
 867         g_free(dinfo->length);
 868         g_free(dinfo);
 869         return stats;
 870 }
 871
 872 static void prefs_themes_create_widget(PrefsPage *page, GtkWindow *window, gpointer data)
 873 {
 874         ThemesPage *prefs_themes = (ThemesPage *)page;
 875         ThemesData *tdata = prefs_themes_data;
 876
 877         GtkWidget *vbox1;
 878         GtkWidget *frame1;
 879         GtkWidget *vbox2;
 880         GtkWidget *hbox3;
 881         GtkWidget *menu_themes;
 882         GtkWidget *btn_install;
 883         GtkWidget *btn_more;
 884         GtkWidget *label_global_status;
 885         GtkWidget *frame_info;
 886         GtkWidget *table1;
 887         GtkWidget *label1;
 888         GtkWidget *label2;
 889         GtkWidget *label3;
 890         GtkWidget *label_name;
 891         GtkWidget *label_author;
 892         GtkWidget *label_url;
 893         GtkWidget *label4;
 894         GtkWidget *label_status;
 895         GtkWidget *frame_preview;
 896         GtkWidget *hbox1;
 897         GtkWidget *icon_1;
 898         GtkWidget *icon_2;
 899         GtkWidget *icon_3;
 900         GtkWidget *icon_4;
 901         GtkWidget *icon_5;
 902         GtkWidget *icon_6;
 903         GtkWidget *icon_7;
 904         GtkWidget *frame_buttons;
 905         GtkWidget *hbuttonbox1;
 906         GtkWidget *btn_remove;
 907         GtkCellRenderer *renderer;
 908 #ifdef HAVE_SVG
 909         GtkWidget *frame_scaling;
 910         GtkWidget *checkbtn_enable_alpha;
 911         GtkWidget *checkbtn_enable_scaling;
 912         GtkWidget *checkbtn_scaling_auto;
 913         GtkWidget *label_scaling_ppi;
 914         GtkWidget *spinbtn_scaling_ppi;
 915         GtkAdjustment *spinbtn_scaling_ppi_adj;
 916 #endif
 917
 918         vbox1 = gtk_vbox_new (FALSE, VSPACING);
 919         gtk_container_set_border_width (GTK_CONTAINER (vbox1), VBOX_BORDER);
 920         gtk_widget_show (vbox1);
 921
 922         vbox2 = gtkut_get_options_frame(vbox1, &frame1, _("Selector"));
 923
 924         hbox3 = gtk_hbox_new (FALSE, 5);
 925         gtk_widget_show (hbox3);
 926         gtk_box_pack_start (GTK_BOX (vbox2), hbox3, FALSE, FALSE, 0);
 927         gtk_container_set_border_width (GTK_CONTAINER (hbox3), 5);
 928
 929         menu_themes = gtk_combo_box_new();
 930         gtk_widget_show (menu_themes);
 931         gtk_box_pack_start (GTK_BOX (hbox3), menu_themes, FALSE, FALSE, 0);
 932
 933         btn_install = gtk_button_new_with_label (_("Install new..."));
 934         gtk_widget_show (btn_install);
 935         gtk_box_pack_start (GTK_BOX (hbox3), btn_install, FALSE, FALSE, 0);
 936         gtkut_widget_set_can_default (btn_install, TRUE);
 937
 938         btn_more = gtkut_get_link_btn((GtkWidget *)window, THEMES_URI, _("Get more..."));
 939         gtk_widget_show (btn_more);
 940         gtk_box_pack_start (GTK_BOX (hbox3), btn_more, FALSE, FALSE, 0);
 941
 942         label_global_status = gtk_label_new ("");
 943         gtk_widget_show (label_global_status);
 944         gtk_box_pack_start (GTK_BOX (vbox2), label_global_status, FALSE, FALSE, 0);
 945         gtk_label_set_justify (GTK_LABEL (label_global_status), GTK_JUSTIFY_LEFT);
 946         gtk_misc_set_alignment (GTK_MISC (label_global_status), 0, 0.5);
 947         gtk_misc_set_padding (GTK_MISC (label_global_status), 6, 0);
 948
 949         PACK_FRAME(vbox1, frame_info, _("Information"));
 950
 951         table1 = gtk_table_new (4, 2, FALSE);
 952         gtk_widget_show (table1);
 953         gtk_container_add (GTK_CONTAINER (frame_info), table1);
 954
 955         label1 = gtk_label_new (_("Name: "));
 956         gtk_widget_show (label1);
 957         gtk_table_attach (GTK_TABLE (table1), label1, 0, 1, 0, 1,
 958                         (GtkAttachOptions) (GTK_FILL),
 959                         (GtkAttachOptions) (0), 8, 2);
 960         gtk_label_set_justify (GTK_LABEL (label1), GTK_JUSTIFY_LEFT);
 961         gtk_misc_set_alignment (GTK_MISC (label1), 0, 0.5);
 962
 963         label2 = gtk_label_new (_("Author: "));
 964         gtk_widget_show (label2);
 965         gtk_table_attach (GTK_TABLE (table1), label2, 0, 1, 1, 2,
 966                         (GtkAttachOptions) (GTK_FILL),
 967                         (GtkAttachOptions) (0), 8, 2);
 968         gtk_label_set_justify (GTK_LABEL (label2), GTK_JUSTIFY_LEFT);
 969         gtk_misc_set_alignment (GTK_MISC (label2), 0, 0.5);
 970
 971         label3 = gtk_label_new (_("URL:"));
 972         gtk_widget_show (label3);
 973         gtk_table_attach (GTK_TABLE (table1), label3, 0, 1, 2, 3,
 974                         (GtkAttachOptions) (GTK_FILL),
 975                         (GtkAttachOptions) (0), 8, 2);
 976         gtk_misc_set_alignment (GTK_MISC (label3), 0, 0.5);
 977
 978         label_name = gtk_label_new ("");
 979         gtk_widget_show (label_name);
 980         gtk_table_attach (GTK_TABLE (table1), label_name, 1, 2, 0, 1,
 981                         (GtkAttachOptions) (GTK_EXPAND | GTK_FILL),
 982                         (GtkAttachOptions) (0), 0, 0);
 983         gtk_misc_set_alignment (GTK_MISC (label_name), 0, 0.5);
 984
 985         label_author = gtk_label_new ("");
 986         gtk_widget_show (label_author);
 987         gtk_table_attach (GTK_TABLE (table1), label_author, 1, 2, 1, 2,
 988                         (GtkAttachOptions) (GTK_FILL),
 989                         (GtkAttachOptions) (0), 0, 0);
 990         gtk_misc_set_alignment (GTK_MISC (label_author), 0, 0.5);
 991
 992         label_url = gtk_label_new ("");
 993         gtk_widget_show (label_url);
 994         gtk_table_attach (GTK_TABLE (table1), label_url, 1, 2, 2, 3,
 995                         (GtkAttachOptions) (GTK_FILL),
 996                         (GtkAttachOptions) (0), 0, 0);
 997         gtk_misc_set_alignment (GTK_MISC (label_url), 0, 0.5);
 998
 999         label4 = gtk_label_new (_("Status:"));
1000         gtk_widget_show (label4);
1001         gtk_table_attach (GTK_TABLE (table1), label4, 0, 1, 3, 4,
1002                         (GtkAttachOptions) (GTK_FILL),
1003                         (GtkAttachOptions) (0), 8, 2);
1004         gtk_misc_set_alignment (GTK_MISC (label4), 0, 0.5);
1005
1006         label_status = gtk_label_new ("");
1007         gtk_widget_show (label_status);
1008         gtk_table_attach (GTK_TABLE (table1), label_status, 1, 2, 3, 4,
1009                         (GtkAttachOptions) (GTK_FILL),
1010                         (GtkAttachOptions) (0), 0, 0);
1011         gtk_misc_set_alignment (GTK_MISC (label_status), 0, 0.5);
1012
1013         PACK_FRAME(vbox1, frame_preview, _("Preview"));
1014
1015         hbox1 = gtk_hbox_new (FALSE, 0);
1016         gtk_widget_show (hbox1);
1017         gtk_container_add (GTK_CONTAINER (frame_preview), hbox1);
1018
1019         icon_1 = gtk_image_new();
1020         gtk_widget_show (icon_1);
1021         gtk_box_pack_start (GTK_BOX (hbox1), icon_1, TRUE, TRUE, 2);
1022         gtk_misc_set_padding (GTK_MISC (icon_1), 0, 5);
1023
1024         icon_2 = gtk_image_new();
1025         gtk_widget_show (icon_2);
1026         gtk_box_pack_start (GTK_BOX (hbox1), icon_2, TRUE, TRUE, 2);
1027         gtk_misc_set_padding (GTK_MISC (icon_2), 0, 5);
1028
1029         icon_3 = gtk_image_new();
1030         gtk_widget_show (icon_3);
1031         gtk_box_pack_start (GTK_BOX (hbox1), icon_3, TRUE, TRUE, 2);
1032         gtk_misc_set_padding (GTK_MISC (icon_3), 0, 5);
1033
1034         icon_4 = gtk_image_new();
1035         gtk_widget_show (icon_4);
1036         gtk_box_pack_start (GTK_BOX (hbox1), icon_4, TRUE, TRUE, 2);
1037         gtk_misc_set_padding (GTK_MISC (icon_4), 0, 5);
1038
1039         icon_5 = gtk_image_new();
1040         gtk_widget_show (icon_5);
1041         gtk_box_pack_start (GTK_BOX (hbox1), icon_5, TRUE, TRUE, 2);
1042         gtk_misc_set_padding (GTK_MISC (icon_5), 0, 5);
1043
1044         icon_6 = gtk_image_new();
1045         gtk_widget_show (icon_6);
1046         gtk_box_pack_start (GTK_BOX (hbox1), icon_6, TRUE, TRUE, 0);
1047         gtk_misc_set_padding (GTK_MISC (icon_6), 0, 5);
1048
1049         icon_7 = gtk_image_new();
1050         gtk_widget_show (icon_7);
1051         gtk_box_pack_start (GTK_BOX (hbox1), icon_7, TRUE, TRUE, 0);
1052         gtk_misc_set_padding (GTK_MISC (icon_7), 0, 5);
1053
1054         PACK_FRAME(vbox1, frame_buttons, _("Actions"));
1055
1056         hbuttonbox1 = gtk_hbutton_box_new ();
1057         gtk_widget_show (hbuttonbox1);
1058         gtk_container_add (GTK_CONTAINER (frame_buttons), hbuttonbox1);
1059         gtk_container_set_border_width (GTK_CONTAINER (hbuttonbox1), 5);
1060         gtk_button_box_set_layout (GTK_BUTTON_BOX (hbuttonbox1), GTK_BUTTONBOX_START);
1061         gtk_box_set_spacing (GTK_BOX (hbuttonbox1), 5);
1062
1063         btn_remove = gtk_button_new_with_label (_("Remove"));
1064         gtk_widget_show (btn_remove);
1065         gtk_container_add (GTK_CONTAINER (hbuttonbox1), btn_remove);
1066         gtkut_widget_set_can_default (btn_remove, TRUE);
1067
1068 #ifdef HAVE_SVG
1069         PACK_FRAME(vbox1, frame_scaling, _("SVG rendering"));
1070
1071         vbox2 = gtk_vbox_new (FALSE, VSPACING);
1072         gtk_widget_show (vbox2);
1073         gtk_container_set_border_width (GTK_CONTAINER (vbox2), 5);
1074         gtk_container_add (GTK_CONTAINER (frame_scaling), vbox2);
1075
1076         PACK_CHECK_BUTTON(vbox2, checkbtn_enable_alpha, _("Enable alpha channel"));
1077         PACK_CHECK_BUTTON(vbox2, checkbtn_enable_scaling, _("Force scaling"));
1078         PACK_CHECK_BUTTON(vbox2, checkbtn_scaling_auto, _("Automatic"));
1079
1080         hbox3 = gtk_hbox_new (FALSE, 5);
1081         gtk_widget_show (hbox3);
1082
1083         label_scaling_ppi = gtk_label_new (_("Pixels per inch (PPI)"));
1084         gtk_widget_show (label_scaling_ppi);
1085         gtk_box_pack_start (GTK_BOX (hbox3), label_scaling_ppi,
1086                         FALSE, FALSE, 5);
1087
1088         spinbtn_scaling_ppi_adj = GTK_ADJUSTMENT(
1089                 gtk_adjustment_new (MIN_PPI, MIN_PPI, MAX_PPI, 1, 10, 0));
1090         spinbtn_scaling_ppi = gtk_spin_button_new(
1091                         spinbtn_scaling_ppi_adj, 1.0, 0);
1092         gtk_widget_show (spinbtn_scaling_ppi);
1093         gtk_box_pack_start (GTK_BOX (hbox3), spinbtn_scaling_ppi,
1094                         FALSE, FALSE, 5);
1095
1096         gtk_box_pack_start (GTK_BOX (vbox2), hbox3, FALSE, FALSE, 0);
1097
1098         /* initialize widget values */
1099         gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON (checkbtn_enable_alpha),
1100                         prefs_common.enable_alpha_svg);
1101         gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON (checkbtn_enable_scaling),
1102                         prefs_common.enable_pixmap_scaling);
1103         gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON (checkbtn_scaling_auto),
1104                         prefs_common.pixmap_scaling_auto);
1105         gtk_spin_button_set_value(GTK_SPIN_BUTTON (spinbtn_scaling_ppi),
1106                         prefs_common.pixmap_scaling_ppi);
1107
1108         /* sensitivity */
1109         gtk_widget_set_sensitive(checkbtn_scaling_auto,
1110                         prefs_common.enable_pixmap_scaling);
1111         gtk_widget_set_sensitive(spinbtn_scaling_ppi,
1112                         prefs_common.enable_pixmap_scaling
1113                                 && !prefs_common.pixmap_scaling_auto);
1114         gtk_widget_set_sensitive(label_scaling_ppi,
1115                         prefs_common.enable_pixmap_scaling
1116                                 && !prefs_common.pixmap_scaling_auto);
1117
1118         /* signals */
1119         g_signal_connect(G_OBJECT(checkbtn_enable_scaling), "toggled",
1120                          G_CALLBACK(prefs_themes_checkbtn_enable_scaling_toggled_cb),
1121                          prefs_themes);
1122         g_signal_connect(G_OBJECT(checkbtn_scaling_auto), "toggled",
1123                          G_CALLBACK(prefs_themes_checkbtn_scaling_auto_toggled_cb),
1124                          prefs_themes);
1125 #endif
1126
1127         g_signal_connect(G_OBJECT(btn_remove), "clicked",
1128                          G_CALLBACK(prefs_themes_btn_remove_clicked_cb),
1129                          NULL);
1130         g_signal_connect(G_OBJECT(btn_install), "clicked",
1131                          G_CALLBACK(prefs_themes_btn_install_clicked_cb),
1132                          NULL);
1133
1134         prefs_themes->window = GTK_WIDGET(window);
1135
1136         prefs_themes->name   = label_name;
1137         prefs_themes->author = label_author;
1138         prefs_themes->url    = label_url;
1139         prefs_themes->status = label_status;
1140         prefs_themes->global = label_global_status;
1141
1142         prefs_themes->icons[0] = icon_1;
1143         prefs_themes->icons[1] = icon_2;
1144         prefs_themes->icons[2] = icon_3;
1145         prefs_themes->icons[3] = icon_4;
1146         prefs_themes->icons[4] = icon_5;
1147         prefs_themes->icons[5] = icon_6;
1148         prefs_themes->icons[6] = icon_7;
1149
1150         prefs_themes->btn_remove  = btn_remove;
1151         prefs_themes->btn_install = btn_install;
1152         prefs_themes->btn_more    = btn_more;
1153
1154         prefs_themes->op_menu     = menu_themes;
1155
1156 #ifdef HAVE_SVG
1157         prefs_themes->checkbtn_enable_alpha   = checkbtn_enable_alpha;
1158         prefs_themes->checkbtn_enable_scaling = checkbtn_enable_scaling;
1159         prefs_themes->checkbtn_scaling_auto   = checkbtn_scaling_auto;
1160         prefs_themes->label_scaling_ppi       = label_scaling_ppi;
1161         prefs_themes->spinbtn_scaling_ppi     = spinbtn_scaling_ppi;
1162 #endif
1163
1164         prefs_themes->page.widget = vbox1;
1165
1166         prefs_themes_set_themes_menu(GTK_COMBO_BOX(menu_themes), tdata);
1167         renderer = gtk_cell_renderer_text_new();
1168         gtk_cell_layout_pack_start(GTK_CELL_LAYOUT(menu_themes), renderer, TRUE);
1169         gtk_cell_layout_set_attributes(GTK_CELL_LAYOUT(menu_themes), renderer,
1170                                         "text", 0, NULL);
1171
1172         prefs_themes_get_theme_info(tdata);
1173         prefs_themes_display_global_stats(tdata);
1174 }
1175
1176 static void prefs_themes_destroy_widget(PrefsPage *page)
1177 {
1178         /* ThemesPage *theme = (ThemesPage *)page; */
1179 }
1180
1181 static void prefs_themes_save(PrefsPage *page)
1182 {
1183         ThemesData *tdata = prefs_themes_data;
1184         gchar      *theme_str = tdata->displayed;
1185 #ifdef HAVE_SVG
1186         ThemesPage *tpage = (ThemesPage *) page;
1187         gboolean alpha = prefs_common.enable_alpha_svg;
1188         gboolean scaling = prefs_common.enable_pixmap_scaling;
1189         gboolean scaling_auto = prefs_common.pixmap_scaling_auto;
1190         gint scaling_ppi = prefs_common.pixmap_scaling_ppi;
1191
1192         prefs_common.enable_alpha_svg = gtk_toggle_button_get_active(
1193                 GTK_TOGGLE_BUTTON (tpage->checkbtn_enable_alpha));
1194         prefs_common.enable_pixmap_scaling = gtk_toggle_button_get_active(
1195                 GTK_TOGGLE_BUTTON (tpage->checkbtn_enable_scaling));
1196         prefs_common.pixmap_scaling_auto = gtk_toggle_button_get_active(
1197                 GTK_TOGGLE_BUTTON (tpage->checkbtn_scaling_auto));
1198         prefs_common.pixmap_scaling_ppi = gtk_spin_button_get_value_as_int (
1199                 GTK_SPIN_BUTTON (tpage->spinbtn_scaling_ppi));
1200 #endif
1201
1202         if (!IS_CURRENT_THEME(theme_str)) {
1203                 debug_print("Changing theme to %s\n", theme_str);
1204                 g_free(prefs_common.pixmap_theme_path);
1205
1206                 prefs_common.pixmap_theme_path = g_strdup(theme_str);
1207
1208                 main_window_reflect_prefs_all_real(TRUE);
1209                 compose_reflect_prefs_pixmap_theme();
1210                 addrcompl_reflect_prefs_pixmap_theme();
1211
1212                 prefs_themes_update_buttons(tdata);
1213         }
1214 #ifdef HAVE_SVG
1215         else if (scaling != prefs_common.enable_pixmap_scaling
1216                         || alpha != prefs_common.enable_alpha_svg
1217                         || (scaling_auto != prefs_common.pixmap_scaling_auto
1218                                 && scaling_ppi != prefs_common.pixmap_scaling_ppi)) {
1219                 /* same theme, different scaling options */
1220                 debug_print("Updating theme scaling\n");
1221                 stock_pixmap_invalidate_all_icons();
1222                 main_window_reflect_prefs_all_real(TRUE);
1223                 compose_reflect_prefs_pixmap_theme();
1224                 addrcompl_reflect_prefs_pixmap_theme();
1225         }
1226 #endif
1227 }
1228