src/gtk/gtkutils.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2005 Hiroyuki Yamamoto
   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 2 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, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #endif
  23
  24 #include <glib.h>
  25 #include <glib/gi18n.h>
  26 #include <gdk/gdkkeysyms.h>
  27 #include <gdk/gdk.h>
  28 #include <gtk/gtkwidget.h>
  29 #include <gtk/gtkhbbox.h>
  30 #include <gtk/gtkbutton.h>
  31 #include <gtk/gtkctree.h>
  32 #include <gtk/gtkcombo.h>
  33 #include <gtk/gtkbindings.h>
  34 #include <gtk/gtkitemfactory.h>
  35 #include <stdlib.h>
  36 #include <stdarg.h>
  37 #include <sys/stat.h>
  38
  39 #if (HAVE_WCTYPE_H && HAVE_WCHAR_H)
  40 #  include <wchar.h>
  41 #  include <wctype.h>
  42 #endif
  43
  44 #include "defs.h"
  45 #include "gtkutils.h"
  46 #include "utils.h"
  47 #include "gtksctree.h"
  48 #include "codeconv.h"
  49 #include "stock_pixmap.h"
  50 #include "menu.h"
  51 #include "prefs_account.h"
  52 #include "prefs_common.h"
  53
  54 #warning FIXME_GTK2
  55 gboolean gtkut_get_font_size(GtkWidget *widget,
  56                              gint *width, gint *height)
  57 {
  58         PangoLayout *layout;
  59         const gchar *str = "Abcdef";
  60
  61         g_return_val_if_fail(GTK_IS_WIDGET(widget), FALSE);
  62
  63         layout = gtk_widget_create_pango_layout(widget, str);
  64         g_return_val_if_fail(layout, FALSE);
  65         pango_layout_get_pixel_size(layout, width, height);
  66         if (width)
  67                 *width = *width / g_utf8_strlen(str, -1);
  68         g_object_unref(layout);
  69
  70         return TRUE;
  71 }
  72
  73 void gtkut_widget_set_small_font_size(GtkWidget *widget)
  74 {
  75         PangoFontDescription *font_desc;
  76         gint size;
  77
  78         g_return_if_fail(widget != NULL);
  79         g_return_if_fail(widget->style != NULL);
  80
  81         font_desc = pango_font_description_from_string(NORMAL_FONT);
  82         size = pango_font_description_get_size(font_desc);
  83         pango_font_description_set_size(font_desc, size * PANGO_SCALE_SMALL);
  84         gtk_widget_modify_font(widget, font_desc);
  85         pango_font_description_free(font_desc);
  86 }
  87
  88 void gtkut_convert_int_to_gdk_color(gint rgbvalue, GdkColor *color)
  89 {
  90         g_return_if_fail(color != NULL);
  91
  92         color->pixel = 0L;
  93         color->red   = (int) (((gdouble)((rgbvalue & 0xff0000) >> 16) / 255.0) * 65535.0);
  94         color->green = (int) (((gdouble)((rgbvalue & 0x00ff00) >>  8) / 255.0) * 65535.0);
  95         color->blue  = (int) (((gdouble) (rgbvalue & 0x0000ff)        / 255.0) * 65535.0);
  96 }
  97
  98 void gtkut_button_set_create(GtkWidget **bbox,
  99                              GtkWidget **button1, const gchar *label1,
 100                              GtkWidget **button2, const gchar *label2,
 101                              GtkWidget **button3, const gchar *label3)
 102 {
 103         g_return_if_fail(bbox != NULL);
 104         g_return_if_fail(button1 != NULL);
 105
 106         *bbox = gtk_hbutton_box_new();
 107         gtk_button_box_set_layout(GTK_BUTTON_BOX(*bbox), GTK_BUTTONBOX_END);
 108         gtk_box_set_spacing(GTK_BOX(*bbox), 5);
 109
 110         *button1 = gtk_button_new_with_label(label1);
 111         GTK_WIDGET_SET_FLAGS(*button1, GTK_CAN_DEFAULT);
 112         gtk_box_pack_start(GTK_BOX(*bbox), *button1, TRUE, TRUE, 0);
 113         gtk_widget_show(*button1);
 114
 115         if (button2) {
 116                 *button2 = gtk_button_new_with_label(label2);
 117                 GTK_WIDGET_SET_FLAGS(*button2, GTK_CAN_DEFAULT);
 118                 gtk_box_pack_start(GTK_BOX(*bbox), *button2, TRUE, TRUE, 0);
 119                 gtk_widget_show(*button2);
 120         }
 121
 122         if (button3) {
 123                 *button3 = gtk_button_new_with_label(label3);
 124                 GTK_WIDGET_SET_FLAGS(*button3, GTK_CAN_DEFAULT);
 125                 gtk_box_pack_start(GTK_BOX(*bbox), *button3, TRUE, TRUE, 0);
 126                 gtk_widget_show(*button3);
 127         }
 128 }
 129
 130 void gtkut_stock_button_set_create(GtkWidget **bbox,
 131                                    GtkWidget **button1, const gchar *label1,
 132                                    GtkWidget **button2, const gchar *label2,
 133                                    GtkWidget **button3, const gchar *label3)
 134 {
 135         g_return_if_fail(bbox != NULL);
 136         g_return_if_fail(button1 != NULL);
 137
 138         *bbox = gtk_hbutton_box_new();
 139         gtk_button_box_set_layout(GTK_BUTTON_BOX(*bbox), GTK_BUTTONBOX_END);
 140         gtk_box_set_spacing(GTK_BOX(*bbox), 5);
 141
 142         *button1 = gtk_button_new_from_stock(label1);
 143         GTK_WIDGET_SET_FLAGS(*button1, GTK_CAN_DEFAULT);
 144         gtk_box_pack_start(GTK_BOX(*bbox), *button1, TRUE, TRUE, 0);
 145         gtk_widget_show(*button1);
 146
 147         if (button2) {
 148                 *button2 = gtk_button_new_from_stock(label2);
 149                 GTK_WIDGET_SET_FLAGS(*button2, GTK_CAN_DEFAULT);
 150                 gtk_box_pack_start(GTK_BOX(*bbox), *button2, TRUE, TRUE, 0);
 151                 gtk_widget_show(*button2);
 152         }
 153
 154         if (button3) {
 155                 *button3 = gtk_button_new_from_stock(label3);
 156                 GTK_WIDGET_SET_FLAGS(*button3, GTK_CAN_DEFAULT);
 157                 gtk_box_pack_start(GTK_BOX(*bbox), *button3, TRUE, TRUE, 0);
 158                 gtk_widget_show(*button3);
 159         }
 160 }
 161
 162 static void combo_button_size_request(GtkWidget *widget,
 163                                       GtkRequisition *requisition,
 164                                       gpointer data)
 165 {
 166         ComboButton *combo = (ComboButton *)data;
 167
 168         if (combo->arrow->allocation.height != requisition->height)
 169                 gtk_widget_set_size_request(combo->arrow,
 170                                             -1, requisition->height);
 171 }
 172
 173 static void combo_button_enter(GtkWidget *widget, gpointer data)
 174 {
 175         ComboButton *combo = (ComboButton *)data;
 176
 177         if (GTK_WIDGET_STATE(combo->arrow) != GTK_STATE_PRELIGHT) {
 178                 gtk_widget_set_state(combo->arrow, GTK_STATE_PRELIGHT);
 179                 gtk_widget_queue_draw(combo->arrow);
 180         }
 181         if (GTK_WIDGET_STATE(combo->button) != GTK_STATE_PRELIGHT) {
 182                 gtk_widget_set_state(combo->button, GTK_STATE_PRELIGHT);
 183                 gtk_widget_queue_draw(combo->button);
 184         }
 185 }
 186
 187 static void combo_button_leave(GtkWidget *widget, gpointer data)
 188 {
 189         ComboButton *combo = (ComboButton *)data;
 190
 191         if (GTK_WIDGET_STATE(combo->arrow) != GTK_STATE_NORMAL) {
 192                 gtk_widget_set_state(combo->arrow, GTK_STATE_NORMAL);
 193                 gtk_widget_queue_draw(combo->arrow);
 194         }
 195         if (GTK_WIDGET_STATE(combo->button) != GTK_STATE_NORMAL) {
 196                 gtk_widget_set_state(combo->button, GTK_STATE_NORMAL);
 197                 gtk_widget_queue_draw(combo->button);
 198         }
 199 }
 200
 201 static gint combo_button_arrow_pressed(GtkWidget *widget, GdkEventButton *event,
 202                                        gpointer data)
 203 {
 204         ComboButton *combo = (ComboButton *)data;
 205
 206         if (!event) return FALSE;
 207
 208         gtk_menu_popup(GTK_MENU(combo->menu), NULL, NULL,
 209                        menu_button_position, combo->button,
 210                        event->button, event->time);
 211
 212         return FALSE;
 213 }
 214
 215 static void combo_button_destroy(GtkWidget *widget, gpointer data)
 216 {
 217         ComboButton *combo = (ComboButton *)data;
 218
 219         gtk_object_destroy(GTK_OBJECT(combo->factory));
 220         g_free(combo);
 221 }
 222
 223 ComboButton *gtkut_combo_button_create(GtkWidget *button,
 224                                        GtkItemFactoryEntry *entries,
 225                                        gint n_entries, const gchar *path,
 226                                        gpointer data)
 227 {
 228         ComboButton *combo;
 229         GtkWidget *arrow;
 230
 231         combo = g_new0(ComboButton, 1);
 232
 233         combo->arrow = gtk_button_new();
 234         arrow = gtk_arrow_new(GTK_ARROW_DOWN, GTK_SHADOW_OUT);
 235         gtk_widget_set_size_request(arrow, 7, -1);
 236         gtk_container_add(GTK_CONTAINER(combo->arrow), arrow);
 237         GTK_WIDGET_UNSET_FLAGS(combo->arrow, GTK_CAN_FOCUS);
 238         gtk_widget_show_all(combo->arrow);
 239
 240         combo->button = button;
 241         combo->menu = menu_create_items(entries, n_entries, path,
 242                                         &combo->factory, data);
 243         combo->data = data;
 244
 245         g_signal_connect(G_OBJECT(combo->button), "size_request",
 246                          G_CALLBACK(combo_button_size_request), combo);
 247         g_signal_connect(G_OBJECT(combo->button), "enter",
 248                          G_CALLBACK(combo_button_enter), combo);
 249         g_signal_connect(G_OBJECT(combo->button), "leave",
 250                          G_CALLBACK(combo_button_leave), combo);
 251         g_signal_connect(G_OBJECT(combo->arrow), "enter",
 252                          G_CALLBACK(combo_button_enter), combo);
 253         g_signal_connect(G_OBJECT(combo->arrow), "leave",
 254                          G_CALLBACK(combo_button_leave), combo);
 255         g_signal_connect(G_OBJECT(combo->arrow), "button_press_event",
 256                          G_CALLBACK(combo_button_arrow_pressed), combo);
 257         g_signal_connect(G_OBJECT(combo->arrow), "destroy",
 258                          G_CALLBACK(combo_button_destroy), combo);
 259
 260         return combo;
 261 }
 262
 263 #define CELL_SPACING 1
 264 #define ROW_TOP_YPIXEL(clist, row) (((clist)->row_height * (row)) + \
 265                                     (((row) + 1) * CELL_SPACING) + \
 266                                     (clist)->voffset)
 267 #define ROW_FROM_YPIXEL(clist, y) (((y) - (clist)->voffset) / \
 268                                    ((clist)->row_height + CELL_SPACING))
 269
 270 void gtkut_ctree_node_move_if_on_the_edge(GtkCTree *ctree, GtkCTreeNode *node)
 271 {
 272         GtkCList *clist = GTK_CLIST(ctree);
 273         gint row;
 274         GtkVisibility row_visibility, prev_row_visibility, next_row_visibility;
 275
 276         g_return_if_fail(ctree != NULL);
 277         g_return_if_fail(node != NULL);
 278
 279         row = g_list_position(clist->row_list, (GList *)node);
 280         if (row < 0 || row >= clist->rows || clist->row_height == 0) return;
 281         row_visibility = gtk_clist_row_is_visible(clist, row);
 282         prev_row_visibility = gtk_clist_row_is_visible(clist, row - 1);
 283         next_row_visibility = gtk_clist_row_is_visible(clist, row + 1);
 284
 285         if (row_visibility == GTK_VISIBILITY_NONE) {
 286                 gtk_clist_moveto(clist, row, -1, 0.5, 0);
 287                 return;
 288         }
 289         if (row_visibility == GTK_VISIBILITY_FULL &&
 290             prev_row_visibility == GTK_VISIBILITY_FULL &&
 291             next_row_visibility == GTK_VISIBILITY_FULL)
 292                 return;
 293         if (prev_row_visibility != GTK_VISIBILITY_FULL &&
 294             next_row_visibility != GTK_VISIBILITY_FULL)
 295                 return;
 296
 297         if (prev_row_visibility != GTK_VISIBILITY_FULL) {
 298                 gtk_clist_moveto(clist, row, -1, 0.2, 0);
 299                 return;
 300         }
 301         if (next_row_visibility != GTK_VISIBILITY_FULL) {
 302                 gtk_clist_moveto(clist, row, -1, 0.8, 0);
 303                 return;
 304         }
 305 }
 306
 307 #undef CELL_SPACING
 308 #undef ROW_TOP_YPIXEL
 309 #undef ROW_FROM_YPIXEL
 310
 311 gint gtkut_ctree_get_nth_from_node(GtkCTree *ctree, GtkCTreeNode *node)
 312 {
 313         g_return_val_if_fail(ctree != NULL, -1);
 314         g_return_val_if_fail(node != NULL, -1);
 315
 316         return g_list_position(GTK_CLIST(ctree)->row_list, (GList *)node);
 317 }
 318
 319 /* get the next node, including the invisible one */
 320 GtkCTreeNode *gtkut_ctree_node_next(GtkCTree *ctree, GtkCTreeNode *node)
 321 {
 322         GtkCTreeNode *parent;
 323
 324         if (!node) return NULL;
 325
 326         if (GTK_CTREE_ROW(node)->children)
 327                 return GTK_CTREE_ROW(node)->children;
 328
 329         if (GTK_CTREE_ROW(node)->sibling)
 330                 return GTK_CTREE_ROW(node)->sibling;
 331
 332         for (parent = GTK_CTREE_ROW(node)->parent; parent != NULL;
 333              parent = GTK_CTREE_ROW(parent)->parent) {
 334                 if (GTK_CTREE_ROW(parent)->sibling)
 335                         return GTK_CTREE_ROW(parent)->sibling;
 336         }
 337
 338         return NULL;
 339 }
 340
 341 /* get the previous node, including the invisible one */
 342 GtkCTreeNode *gtkut_ctree_node_prev(GtkCTree *ctree, GtkCTreeNode *node)
 343 {
 344         GtkCTreeNode *prev;
 345         GtkCTreeNode *child;
 346
 347         if (!node) return NULL;
 348
 349         prev = GTK_CTREE_NODE_PREV(node);
 350         if (prev == GTK_CTREE_ROW(node)->parent)
 351                 return prev;
 352
 353         child = prev;
 354         while (GTK_CTREE_ROW(child)->children != NULL) {
 355                 child = GTK_CTREE_ROW(child)->children;
 356                 while (GTK_CTREE_ROW(child)->sibling != NULL)
 357                         child = GTK_CTREE_ROW(child)->sibling;
 358         }
 359
 360         return child;
 361 }
 362
 363 gboolean gtkut_ctree_node_is_selected(GtkCTree *ctree, GtkCTreeNode *node)
 364 {
 365         GtkCList *clist = GTK_CLIST(ctree);
 366         GList *cur;
 367
 368         for (cur = clist->selection; cur != NULL; cur = cur->next) {
 369                 if (node == GTK_CTREE_NODE(cur->data))
 370                         return TRUE;
 371         }
 372
 373         return FALSE;
 374 }
 375
 376 GtkCTreeNode *gtkut_ctree_find_collapsed_parent(GtkCTree *ctree,
 377                                                 GtkCTreeNode *node)
 378 {
 379         if (!node) return NULL;
 380
 381         while ((node = GTK_CTREE_ROW(node)->parent) != NULL) {
 382                 if (!GTK_CTREE_ROW(node)->expanded)
 383                         return node;
 384         }
 385
 386         return NULL;
 387 }
 388
 389 void gtkut_ctree_expand_parent_all(GtkCTree *ctree, GtkCTreeNode *node)
 390 {
 391         while ((node = gtkut_ctree_find_collapsed_parent(ctree, node)) != NULL)
 392                 gtk_ctree_expand(ctree, node);
 393 }
 394
 395 gboolean gtkut_ctree_node_is_parent(GtkCTreeNode *parent, GtkCTreeNode *node)
 396 {
 397         GtkCTreeNode *tmp;
 398         g_return_val_if_fail(node != NULL, FALSE);
 399         g_return_val_if_fail(parent != NULL, FALSE);
 400         tmp = node;
 401
 402         while (tmp) {
 403                 if(GTK_CTREE_ROW(tmp)->parent && GTK_CTREE_ROW(tmp)->parent == parent)
 404                         return TRUE;
 405                 tmp = GTK_CTREE_ROW(tmp)->parent;
 406         }
 407
 408         return FALSE;
 409 }
 410
 411 void gtkut_ctree_set_focus_row(GtkCTree *ctree, GtkCTreeNode *node)
 412 {
 413         gtkut_clist_set_focus_row(GTK_CLIST(ctree),
 414                                   gtkut_ctree_get_nth_from_node(ctree, node));
 415 }
 416
 417 void gtkut_clist_set_focus_row(GtkCList *clist, gint row)
 418 {
 419         clist->focus_row = row;
 420         GTKUT_CTREE_REFRESH(clist);
 421 }
 422
 423 void gtkut_combo_set_items(GtkCombo *combo, const gchar *str1, ...)
 424 {
 425         va_list args;
 426         gchar *s;
 427         GList *combo_items = NULL;
 428
 429         g_return_if_fail(str1 != NULL);
 430
 431         combo_items = g_list_append(combo_items, (gpointer)str1);
 432         va_start(args, str1);
 433         s = va_arg(args, gchar*);
 434         while (s) {
 435                 combo_items = g_list_append(combo_items, (gpointer)s);
 436                 s = va_arg(args, gchar*);
 437         }
 438         va_end(args);
 439
 440         gtk_combo_set_popdown_strings(combo, combo_items);
 441
 442         g_list_free(combo_items);
 443 }
 444
 445 gchar *gtkut_editable_get_selection(GtkEditable *editable)
 446 {
 447         guint start_pos, end_pos;
 448         gboolean found;
 449
 450         g_return_val_if_fail(GTK_IS_EDITABLE(editable), NULL);
 451
 452         found = gtk_editable_get_selection_bounds(editable,
 453                                                   &start_pos, &end_pos);
 454         if (found)
 455                 return gtk_editable_get_chars(editable, start_pos, end_pos);
 456         else
 457                 return NULL;
 458 }
 459
 460 void gtkut_editable_disable_im(GtkEditable *editable)
 461 {
 462         g_return_if_fail(editable != NULL);
 463
 464 #if USE_XIM
 465         if (editable->ic) {
 466                 gdk_ic_destroy(editable->ic);
 467                 editable->ic = NULL;
 468         }
 469         if (editable->ic_attr) {
 470                 gdk_ic_attr_destroy(editable->ic_attr);
 471                 editable->ic_attr = NULL;
 472         }
 473 #endif
 474 }
 475
 476 /*
 477  * Walk through the widget tree and disclaim the selection from all currently
 478  * realized GtkEditable widgets.
 479  */
 480 static void gtkut_check_before_remove(GtkWidget *widget, gpointer unused)
 481 {
 482         g_return_if_fail(widget != NULL);
 483
 484         if (!GTK_WIDGET_REALIZED(widget))
 485                 return; /* all nested widgets must be unrealized too */
 486         if (GTK_IS_CONTAINER(widget))
 487                 gtk_container_forall(GTK_CONTAINER(widget),
 488                                      gtkut_check_before_remove, NULL);
 489 #warning FIXME_GTK2
 490 #if 0
 491         if (GTK_IS_EDITABLE(widget))
 492                 gtk_editable_claim_selection(GTK_EDITABLE(widget),
 493                                              FALSE, GDK_CURRENT_TIME);
 494 #endif
 495 }
 496
 497 /*
 498  * Wrapper around gtk_container_remove to work around a bug in GtkText and
 499  * GtkEntry (in all GTK+ versions up to and including at least 1.2.10).
 500  *
 501  * The problem is that unrealizing a GtkText or GtkEntry widget which has the
 502  * active selection completely messes up selection handling, leading to
 503  * non-working selections and crashes.  Removing a widget from its container
 504  * implies unrealizing it and all its child widgets; this triggers the bug if
 505  * the removed widget or any of its children is GtkText or GtkEntry.  As a
 506  * workaround, this function walks through the widget subtree before removing
 507  * and disclaims the selection from all GtkEditable widgets found.
 508  *
 509  * A similar workaround may be needed for gtk_widget_reparent(); currently it
 510  * is not necessary because Sylpheed does not use gtk_widget_reparent() for
 511  * GtkEditable widgets or containers holding such widgets.
 512  */
 513 void gtkut_container_remove(GtkContainer *container, GtkWidget *widget)
 514 {
 515         gtkut_check_before_remove(widget, NULL);
 516         gtk_container_remove(container, widget);
 517 }
 518
 519 gboolean gtkut_text_buffer_match_string(GtkTextBuffer *textbuf,
 520                                         const GtkTextIter *iter,
 521                                         gunichar *wcs, gint len,
 522                                         gboolean case_sens)
 523 {
 524         GtkTextIter start_iter, end_iter;
 525         gchar *utf8str, *p;
 526         gint match_count;
 527
 528         start_iter = end_iter = *iter;
 529         gtk_text_iter_forward_chars(&end_iter, len);
 530
 531         utf8str = gtk_text_buffer_get_text(textbuf, &start_iter, &end_iter,
 532                                            FALSE);
 533         if (!utf8str) return FALSE;
 534
 535         if ((gint)g_utf8_strlen(utf8str, -1) != len) {
 536                 g_free(utf8str);
 537                 return FALSE;
 538         }
 539
 540         for (p = utf8str, match_count = 0;
 541              *p != '\0' && match_count < len;
 542              p = g_utf8_next_char(p), match_count++) {
 543                 gunichar wc;
 544
 545                 wc = g_utf8_get_char(p);
 546
 547                 if (case_sens) {
 548                         if (wc != wcs[match_count])
 549                                 break;
 550                 } else {
 551                         if (g_unichar_tolower(wc) !=
 552                             g_unichar_tolower(wcs[match_count]))
 553                                 break;
 554                 }
 555         }
 556
 557         g_free(utf8str);
 558
 559         if (match_count == len)
 560                 return TRUE;
 561         else
 562                 return FALSE;
 563 }
 564
 565 gboolean gtkut_text_buffer_find(GtkTextBuffer *buffer, const GtkTextIter *iter,
 566                                 const gchar *str, gboolean case_sens,
 567                                 GtkTextIter *match_pos)
 568 {
 569         gunichar *wcs;
 570         gint len;
 571         glong items_read = 0, items_written = 0;
 572         GError *error = NULL;
 573         GtkTextIter iter_;
 574         gboolean found = FALSE;
 575
 576         wcs = g_utf8_to_ucs4(str, -1, &items_read, &items_written, &error);
 577         if (error != NULL) {
 578                 g_warning("An error occured while converting a string from UTF-8 to UCS-4: %s\n",
 579                           error->message);
 580                 g_error_free(error);
 581         }
 582         if (!wcs || items_written <= 0) return FALSE;
 583         len = (gint)items_written;
 584
 585         iter_ = *iter;
 586         do {
 587                 found = gtkut_text_buffer_match_string
 588                         (buffer, &iter_, wcs, len, case_sens);
 589                 if (found) {
 590                         *match_pos = iter_;
 591                         break;
 592                 }
 593         } while (gtk_text_iter_forward_char(&iter_));
 594
 595         g_free(wcs);
 596
 597         return found;
 598 }
 599
 600 gboolean gtkut_text_buffer_find_backward(GtkTextBuffer *buffer,
 601                                          const GtkTextIter *iter,
 602                                          const gchar *str, gboolean case_sens,
 603                                          GtkTextIter *match_pos)
 604 {
 605         gunichar *wcs;
 606         gint len;
 607         glong items_read = 0, items_written = 0;
 608         GError *error = NULL;
 609         GtkTextIter iter_;
 610         gboolean found = FALSE;
 611
 612         wcs = g_utf8_to_ucs4(str, -1, &items_read, &items_written, &error);
 613         if (error != NULL) {
 614                 g_warning("An error occured while converting a string from UTF-8 to UCS-4: %s\n", error->message);
 615                 g_error_free(error);
 616         }
 617         if (!wcs || items_written <= 0) return FALSE;
 618         len = (gint)items_written;
 619
 620         iter_ = *iter;
 621         while (gtk_text_iter_backward_char(&iter_)) {
 622                 found = gtkut_text_buffer_match_string
 623                         (buffer, &iter_, wcs, len, case_sens);
 624                 if (found) {
 625                         *match_pos = iter_;
 626                         break;
 627                 }
 628         }
 629
 630         g_free(wcs);
 631
 632         return found;
 633 }
 634
 635 gchar *gtkut_text_view_get_selection(GtkTextView *textview)
 636 {
 637         GtkTextBuffer *buffer;
 638         GtkTextIter start_iter, end_iter;
 639         gboolean found;
 640
 641         g_return_val_if_fail(GTK_IS_TEXT_VIEW(textview), NULL);
 642
 643         buffer = gtk_text_view_get_buffer(textview);
 644         found = gtk_text_buffer_get_selection_bounds(buffer,
 645                                                      &start_iter,
 646                                                      &end_iter);
 647         if (found)
 648                 return gtk_text_buffer_get_text(buffer, &start_iter, &end_iter,
 649                                                 FALSE);
 650         else
 651                 return NULL;
 652 }
 653
 654 void gtkut_window_popup(GtkWidget *window)
 655 {
 656         gint x, y, sx, sy, new_x, new_y;
 657
 658         g_return_if_fail(window != NULL);
 659         g_return_if_fail(window->window != NULL);
 660
 661         sx = gdk_screen_width();
 662         sy = gdk_screen_height();
 663
 664         gdk_window_get_origin(window->window, &x, &y);
 665         new_x = x % sx; if (new_x < 0) new_x = 0;
 666         new_y = y % sy; if (new_y < 0) new_y = 0;
 667         if (new_x != x || new_y != y)
 668                 gdk_window_move(window->window, new_x, new_y);
 669
 670         gtk_window_present(GTK_WINDOW(window));
 671 }
 672
 673 void gtkut_widget_get_uposition(GtkWidget *widget, gint *px, gint *py)
 674 {
 675         gint x, y;
 676         gint sx, sy;
 677
 678         g_return_if_fail(widget != NULL);
 679         g_return_if_fail(widget->window != NULL);
 680
 681         sx = gdk_screen_width();
 682         sy = gdk_screen_height();
 683
 684         /* gdk_window_get_root_origin ever return *rootwindow*'s position */
 685         gdk_window_get_root_origin(widget->window, &x, &y);
 686
 687         x %= sx; if (x < 0) x = 0;
 688         y %= sy; if (y < 0) y = 0;
 689         *px = x;
 690         *py = y;
 691 }
 692
 693 void gtkut_widget_wait_for_draw(GtkWidget *widget)
 694 {
 695         if (!GTK_WIDGET_DRAWABLE(widget)) return;
 696
 697         while (gtk_events_pending())
 698                 gtk_main_iteration();
 699 }
 700
 701 static void gtkut_clist_bindings_add(GtkWidget *clist)
 702 {
 703         GtkBindingSet *binding_set;
 704
 705         binding_set = gtk_binding_set_by_class
 706                 (GTK_CLIST_GET_CLASS(clist));
 707
 708         gtk_binding_entry_add_signal(binding_set, GDK_n, GDK_CONTROL_MASK,
 709                                      "scroll_vertical", 2,
 710                                      G_TYPE_ENUM, GTK_SCROLL_STEP_FORWARD,
 711                                      G_TYPE_FLOAT, 0.0);
 712         gtk_binding_entry_add_signal(binding_set, GDK_p, GDK_CONTROL_MASK,
 713                                      "scroll_vertical", 2,
 714                                      G_TYPE_ENUM, GTK_SCROLL_STEP_BACKWARD,
 715                                      G_TYPE_FLOAT, 0.0);
 716 }
 717
 718 void gtkut_widget_init(void)
 719 {
 720         GtkWidget *clist;
 721
 722         clist = gtk_clist_new(1);
 723         g_object_ref(G_OBJECT(clist));
 724         gtk_object_sink(GTK_OBJECT(clist));
 725         gtkut_clist_bindings_add(clist);
 726         g_object_unref(G_OBJECT(clist));
 727
 728         clist = gtk_ctree_new(1, 0);
 729         g_object_ref(G_OBJECT(clist));
 730         gtk_object_sink(GTK_OBJECT(clist));
 731         gtkut_clist_bindings_add(clist);
 732         g_object_unref(G_OBJECT(clist));
 733
 734         clist = gtk_sctree_new_with_titles(1, 0, NULL);
 735         g_object_ref(G_OBJECT(clist));
 736         gtk_object_sink(GTK_OBJECT(clist));
 737         gtkut_clist_bindings_add(clist);
 738         g_object_unref(G_OBJECT(clist));
 739 }
 740
 741 void gtkut_widget_set_app_icon(GtkWidget *widget)
 742 {
 743 #include "pixmaps/sylpheed.xpm"
 744         static GdkPixmap *sylpheedxpm;
 745         static GdkBitmap *sylpheedxpmmask;
 746
 747         g_return_if_fail(widget != NULL);
 748         g_return_if_fail(widget->window != NULL);
 749         if (!sylpheedxpm) {
 750                 PIXMAP_CREATE(widget, sylpheedxpm, sylpheedxpmmask, sylpheed_xpm);
 751         }
 752         gdk_window_set_icon(widget->window, NULL, sylpheedxpm, sylpheedxpmmask);
 753 }
 754
 755 void gtkut_widget_set_composer_icon(GtkWidget *widget)
 756 {
 757         static GdkPixmap *xpm;
 758         static GdkBitmap *bmp;
 759
 760         g_return_if_fail(widget != NULL);
 761         g_return_if_fail(widget->window != NULL);
 762         if (!xpm) {
 763                 stock_pixmap_gdk(widget, STOCK_PIXMAP_MAIL_COMPOSE, &xpm, &bmp);
 764         }
 765         gdk_window_set_icon(widget->window, NULL, xpm, bmp);
 766 }
 767
 768 GtkWidget *gtkut_account_menu_new(GList                 *ac_list,
 769                                   GCallback              callback,
 770                                   gpointer               data)
 771 {
 772         GList *cur_ac;
 773         GtkWidget *menu;
 774
 775         g_return_val_if_fail(ac_list != NULL, NULL);
 776
 777         menu = gtk_menu_new();
 778
 779         for (cur_ac = ac_list; cur_ac != NULL; cur_ac = cur_ac->next) {
 780                 gchar *name;
 781                 GtkWidget *menuitem;
 782                 PrefsAccount *account;
 783
 784                 account = (PrefsAccount *) cur_ac->data;
 785                 if (account->name)
 786                         name = g_strdup_printf("%s: %s <%s>",
 787                                                account->account_name,
 788                                                account->name,
 789                                                account->address);
 790                 else
 791                         name = g_strdup_printf("%s: %s",
 792                                                account->account_name,
 793                                                account->address);
 794                 MENUITEM_ADD(menu, menuitem, name, account->account_id);
 795                 g_free(name);
 796                 if (callback != NULL)
 797                         g_signal_connect(G_OBJECT(menuitem), "activate",
 798                                          callback, data);
 799         }
 800         return menu;
 801 }
 802
 803 void gtkut_set_widget_bgcolor_rgb(GtkWidget *widget, guint rgbvalue)
 804 {
 805         GtkStyle *newstyle;
 806         GdkColor gdk_color;
 807
 808         gtkut_convert_int_to_gdk_color(rgbvalue, &gdk_color);
 809         newstyle = gtk_style_copy(gtk_widget_get_default_style());
 810         newstyle->bg[GTK_STATE_NORMAL]   = gdk_color;
 811         newstyle->bg[GTK_STATE_PRELIGHT] = gdk_color;
 812         newstyle->bg[GTK_STATE_ACTIVE]   = gdk_color;
 813         gtk_widget_set_style(widget, newstyle);
 814 }
 815
 816 /*!
 817  *\brief        Tries to find a focused child using a lame strategy
 818  */
 819 GtkWidget *gtkut_get_focused_child(GtkContainer *parent)
 820 {
 821         GtkWidget *result = NULL;
 822         GList *child_list = NULL;
 823         GList *c;
 824
 825         g_return_val_if_fail(parent, NULL);
 826
 827         /* Get children list and see which has the focus. */
 828         child_list = gtk_container_get_children(parent);
 829         if (!child_list)
 830                 return NULL;
 831
 832         for (c = child_list; c != NULL; c = g_list_next(c)) {
 833                 if (c->data && GTK_IS_WIDGET(c->data)) {
 834                         if (GTK_WIDGET_HAS_FOCUS(GTK_WIDGET(c->data))) {
 835                                 result = GTK_WIDGET(c->data);
 836                                 break;
 837                         }
 838                 }
 839         }
 840
 841         /* See if the returned widget is a container itself; if it is,
 842          * see if one of its children is focused. If the focused
 843          * container has no focused child, it is itself a focusable
 844          * child, and has focus. */
 845         if (result && GTK_IS_CONTAINER(result)) {
 846                 GtkWidget *tmp =  gtkut_get_focused_child(GTK_CONTAINER(result));
 847
 848                 if (tmp)
 849                         result = tmp;
 850         } else {
 851                 /* Try the same for each container in the chain */
 852                 for (c = child_list; c != NULL && !result; c = g_list_next(c)) {
 853                         if (c->data && GTK_IS_WIDGET(c->data)
 854                         &&  GTK_IS_CONTAINER(c->data)) {
 855                                 result = gtkut_get_focused_child
 856                                         (GTK_CONTAINER(c->data));
 857                         }
 858                 }
 859
 860         }
 861
 862         g_list_free(child_list);
 863
 864         return result;
 865 }