src/gtk/gtkutils.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2003 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 <gdk/gdkkeysyms.h>
  26 #include <gdk/gdk.h>
  27 #include <gtk/gtkwidget.h>
  28 #include <gtk/gtkhbbox.h>
  29 #include <gtk/gtkbutton.h>
  30 #include <gtk/gtkctree.h>
  31 #include <gtk/gtkcombo.h>
  32 #include <gtk/gtkthemes.h>
  33 #include <gtk/gtkbindings.h>
  34 #include <stdlib.h>
  35 #include <stdarg.h>
  36 #include <sys/stat.h>
  37
  38 #if (HAVE_WCTYPE_H && HAVE_WCHAR_H)
  39 #  include <wchar.h>
  40 #  include <wctype.h>
  41 #endif
  42
  43 #include "intl.h"
  44 #include "gtkutils.h"
  45 #include "utils.h"
  46 #include "gtksctree.h"
  47 #include "codeconv.h"
  48 #include "stock_pixmap.h"
  49 #include "menu.h"
  50 #include "prefs_account.h"
  51
  52 gint gtkut_get_font_width(GdkFont *font)
  53 {
  54         gchar *str;
  55         gint width;
  56
  57         if (conv_get_current_charset() == C_UTF_8)
  58                 str = "Abcdef";
  59         else
  60                 str = _("Abcdef");
  61
  62         width = gdk_string_width(font, str);
  63         width /= strlen(str);
  64
  65         return width;
  66 }
  67
  68 gint gtkut_get_font_height(GdkFont *font)
  69 {
  70         gchar *str;
  71         gint height;
  72
  73         if (conv_get_current_charset() == C_UTF_8)
  74                 str = "Abcdef";
  75         else
  76                 str = _("Abcdef");
  77
  78         height = gdk_string_height(font, str);
  79
  80         return height;
  81 }
  82
  83 GdkFont *gtkut_font_load(const gchar *fontset_name)
  84 {
  85         GdkFont *font;
  86
  87         g_return_val_if_fail(fontset_name != NULL, NULL);
  88
  89         if (conv_get_current_charset() == C_US_ASCII)
  90                 font = gtkut_font_load_from_fontset(fontset_name);
  91         else
  92                 font = gdk_fontset_load(fontset_name);
  93
  94         return font;
  95 }
  96
  97 GdkFont *gtkut_font_load_from_fontset(const gchar *fontset_name)
  98 {
  99         GdkFont *font = NULL;
 100
 101         if (strchr(fontset_name, ',') == NULL) {
 102                 font = gdk_font_load(fontset_name);
 103         } else {
 104                 gchar **fonts;
 105                 gint i;
 106
 107                 fonts = g_strsplit(fontset_name, ",", -1);
 108                 for (i = 0; fonts[i] != NULL && fonts[i][0] != '\0';
 109                      i++) {
 110                         font = gdk_font_load(fonts[i]);
 111                         if (font) break;
 112                 }
 113                 g_strfreev(fonts);
 114         }
 115
 116         return font;
 117 }
 118
 119 void gtkut_convert_int_to_gdk_color(gint rgbvalue, GdkColor *color)
 120 {
 121         g_return_if_fail(color != NULL);
 122
 123         color->pixel = 0L;
 124         color->red   = (int) (((gdouble)((rgbvalue & 0xff0000) >> 16) / 255.0) * 65535.0);
 125         color->green = (int) (((gdouble)((rgbvalue & 0x00ff00) >>  8) / 255.0) * 65535.0);
 126         color->blue  = (int) (((gdouble) (rgbvalue & 0x0000ff)        / 255.0) * 65535.0);
 127 }
 128
 129 void gtkut_button_set_create(GtkWidget **bbox,
 130                              GtkWidget **button1, const gchar *label1,
 131                              GtkWidget **button2, const gchar *label2,
 132                              GtkWidget **button3, const gchar *label3)
 133 {
 134         g_return_if_fail(bbox != NULL);
 135         g_return_if_fail(button1 != NULL);
 136
 137         *bbox = gtk_hbutton_box_new();
 138         gtk_button_box_set_layout(GTK_BUTTON_BOX(*bbox), GTK_BUTTONBOX_END);
 139         gtk_button_box_set_spacing(GTK_BUTTON_BOX(*bbox), 5);
 140
 141         *button1 = gtk_button_new_with_label(label1);
 142         GTK_WIDGET_SET_FLAGS(*button1, GTK_CAN_DEFAULT);
 143         gtk_box_pack_start(GTK_BOX(*bbox), *button1, TRUE, TRUE, 0);
 144         gtk_widget_show(*button1);
 145
 146         if (button2) {
 147                 *button2 = gtk_button_new_with_label(label2);
 148                 GTK_WIDGET_SET_FLAGS(*button2, GTK_CAN_DEFAULT);
 149                 gtk_box_pack_start(GTK_BOX(*bbox), *button2, TRUE, TRUE, 0);
 150                 gtk_widget_show(*button2);
 151         }
 152
 153         if (button3) {
 154                 *button3 = gtk_button_new_with_label(label3);
 155                 GTK_WIDGET_SET_FLAGS(*button3, GTK_CAN_DEFAULT);
 156                 gtk_box_pack_start(GTK_BOX(*bbox), *button3, TRUE, TRUE, 0);
 157                 gtk_widget_show(*button3);
 158         }
 159 }
 160
 161 #define CELL_SPACING 1
 162 #define ROW_TOP_YPIXEL(clist, row) (((clist)->row_height * (row)) + \
 163                                     (((row) + 1) * CELL_SPACING) + \
 164                                     (clist)->voffset)
 165 #define ROW_FROM_YPIXEL(clist, y) (((y) - (clist)->voffset) / \
 166                                    ((clist)->row_height + CELL_SPACING))
 167
 168 void gtkut_ctree_node_move_if_on_the_edge(GtkCTree *ctree, GtkCTreeNode *node)
 169 {
 170         GtkCList *clist = GTK_CLIST(ctree);
 171         gint row;
 172         GtkVisibility row_visibility, prev_row_visibility, next_row_visibility;
 173
 174         g_return_if_fail(ctree != NULL);
 175         g_return_if_fail(node != NULL);
 176
 177         row = g_list_position(clist->row_list, (GList *)node);
 178         if (row < 0 || row >= clist->rows || clist->row_height == 0) return;
 179         row_visibility = gtk_clist_row_is_visible(clist, row);
 180         prev_row_visibility = gtk_clist_row_is_visible(clist, row - 1);
 181         next_row_visibility = gtk_clist_row_is_visible(clist, row + 1);
 182
 183         if (row_visibility == GTK_VISIBILITY_NONE) {
 184                 gtk_clist_moveto(clist, row, -1, 0.5, 0);
 185                 return;
 186         }
 187         if (row_visibility == GTK_VISIBILITY_FULL &&
 188             prev_row_visibility == GTK_VISIBILITY_FULL &&
 189             next_row_visibility == GTK_VISIBILITY_FULL)
 190                 return;
 191         if (prev_row_visibility != GTK_VISIBILITY_FULL &&
 192             next_row_visibility != GTK_VISIBILITY_FULL)
 193                 return;
 194
 195         if (prev_row_visibility != GTK_VISIBILITY_FULL) {
 196                 gtk_clist_moveto(clist, row, -1, 0.2, 0);
 197                 return;
 198         }
 199         if (next_row_visibility != GTK_VISIBILITY_FULL) {
 200                 gtk_clist_moveto(clist, row, -1, 0.8, 0);
 201                 return;
 202         }
 203 }
 204
 205 #undef CELL_SPACING
 206 #undef ROW_TOP_YPIXEL
 207 #undef ROW_FROM_YPIXEL
 208
 209 gint gtkut_ctree_get_nth_from_node(GtkCTree *ctree, GtkCTreeNode *node)
 210 {
 211         g_return_val_if_fail(ctree != NULL, -1);
 212         g_return_val_if_fail(node != NULL, -1);
 213
 214         return g_list_position(GTK_CLIST(ctree)->row_list, (GList *)node);
 215 }
 216
 217 /* get the next node, including the invisible one */
 218 GtkCTreeNode *gtkut_ctree_node_next(GtkCTree *ctree, GtkCTreeNode *node)
 219 {
 220         GtkCTreeNode *parent;
 221
 222         if (!node) return NULL;
 223
 224         if (GTK_CTREE_ROW(node)->children)
 225                 return GTK_CTREE_ROW(node)->children;
 226
 227         if (GTK_CTREE_ROW(node)->sibling)
 228                 return GTK_CTREE_ROW(node)->sibling;
 229
 230         for (parent = GTK_CTREE_ROW(node)->parent; parent != NULL;
 231              parent = GTK_CTREE_ROW(parent)->parent) {
 232                 if (GTK_CTREE_ROW(parent)->sibling)
 233                         return GTK_CTREE_ROW(parent)->sibling;
 234         }
 235
 236         return NULL;
 237 }
 238
 239 /* get the previous node, including the invisible one */
 240 GtkCTreeNode *gtkut_ctree_node_prev(GtkCTree *ctree, GtkCTreeNode *node)
 241 {
 242         GtkCTreeNode *prev;
 243         GtkCTreeNode *child;
 244
 245         if (!node) return NULL;
 246
 247         prev = GTK_CTREE_NODE_PREV(node);
 248         if (prev == GTK_CTREE_ROW(node)->parent)
 249                 return prev;
 250
 251         child = prev;
 252         while (GTK_CTREE_ROW(child)->children != NULL) {
 253                 child = GTK_CTREE_ROW(child)->children;
 254                 while (GTK_CTREE_ROW(child)->sibling != NULL)
 255                         child = GTK_CTREE_ROW(child)->sibling;
 256         }
 257
 258         return child;
 259 }
 260
 261 gboolean gtkut_ctree_node_is_selected(GtkCTree *ctree, GtkCTreeNode *node)
 262 {
 263         GtkCList *clist = GTK_CLIST(ctree);
 264         GList *cur;
 265
 266         for (cur = clist->selection; cur != NULL; cur = cur->next) {
 267                 if (node == GTK_CTREE_NODE(cur->data))
 268                         return TRUE;
 269         }
 270
 271         return FALSE;
 272 }
 273
 274 GtkCTreeNode *gtkut_ctree_find_collapsed_parent(GtkCTree *ctree,
 275                                                 GtkCTreeNode *node)
 276 {
 277         if (!node) return NULL;
 278
 279         while ((node = GTK_CTREE_ROW(node)->parent) != NULL) {
 280                 if (!GTK_CTREE_ROW(node)->expanded)
 281                         return node;
 282         }
 283
 284         return NULL;
 285 }
 286
 287 void gtkut_ctree_expand_parent_all(GtkCTree *ctree, GtkCTreeNode *node)
 288 {
 289         while ((node = gtkut_ctree_find_collapsed_parent(ctree, node)) != NULL)
 290                 gtk_ctree_expand(ctree, node);
 291 }
 292
 293 gboolean gtkut_ctree_node_is_parent(GtkCTreeNode *parent, GtkCTreeNode *node)
 294 {
 295         GtkCTreeNode *tmp;
 296         g_return_val_if_fail(node != NULL, FALSE);
 297         g_return_val_if_fail(parent != NULL, FALSE);
 298         tmp = node;
 299
 300         while (tmp) {
 301                 if(GTK_CTREE_ROW(tmp)->parent && GTK_CTREE_ROW(tmp)->parent == parent)
 302                         return TRUE;
 303                 tmp = GTK_CTREE_ROW(tmp)->parent;
 304         }
 305
 306         return FALSE;
 307 }
 308
 309 void gtkut_ctree_set_focus_row(GtkCTree *ctree, GtkCTreeNode *node)
 310 {
 311         gtkut_clist_set_focus_row(GTK_CLIST(ctree),
 312                                   gtkut_ctree_get_nth_from_node(ctree, node));
 313 }
 314
 315 void gtkut_clist_set_focus_row(GtkCList *clist, gint row)
 316 {
 317         clist->focus_row = row;
 318         GTKUT_CTREE_REFRESH(clist);
 319 }
 320
 321 void gtkut_combo_set_items(GtkCombo *combo, const gchar *str1, ...)
 322 {
 323         va_list args;
 324         gchar *s;
 325         GList *combo_items = NULL;
 326
 327         g_return_if_fail(str1 != NULL);
 328
 329         combo_items = g_list_append(combo_items, (gpointer)str1);
 330         va_start(args, str1);
 331         s = va_arg(args, gchar*);
 332         while (s) {
 333                 combo_items = g_list_append(combo_items, (gpointer)s);
 334                 s = va_arg(args, gchar*);
 335         }
 336         va_end(args);
 337
 338         gtk_combo_set_popdown_strings(combo, combo_items);
 339
 340         g_list_free(combo_items);
 341 }
 342
 343 gchar *gtkut_editable_get_selection(GtkEditable *editable)
 344 {
 345         guint start_pos, end_pos;
 346
 347         g_return_val_if_fail(editable != NULL, NULL);
 348
 349         if (!editable->has_selection) return NULL;
 350
 351         if (editable->selection_start_pos == editable->selection_end_pos)
 352                 return NULL;
 353
 354         if (editable->selection_start_pos < editable->selection_end_pos) {
 355                 start_pos = editable->selection_start_pos;
 356                 end_pos = editable->selection_end_pos;
 357         } else {
 358                 start_pos = editable->selection_end_pos;
 359                 end_pos = editable->selection_start_pos;
 360         }
 361
 362         return gtk_editable_get_chars(editable, start_pos, end_pos);
 363 }
 364
 365 /*
 366  * Walk through the widget tree and disclaim the selection from all currently
 367  * realized GtkEditable widgets.
 368  */
 369 static void gtkut_check_before_remove(GtkWidget *widget, gpointer unused)
 370 {
 371         g_return_if_fail(widget != NULL);
 372
 373         if (!GTK_WIDGET_REALIZED(widget))
 374                 return; /* all nested widgets must be unrealized too */
 375         if (GTK_IS_CONTAINER(widget))
 376                 gtk_container_forall(GTK_CONTAINER(widget),
 377                                      gtkut_check_before_remove, NULL);
 378         if (GTK_IS_EDITABLE(widget))
 379                 gtk_editable_claim_selection(GTK_EDITABLE(widget),
 380                                              FALSE, GDK_CURRENT_TIME);
 381 }
 382
 383 /*
 384  * Wrapper around gtk_container_remove to work around a bug in GtkText and
 385  * GtkEntry (in all GTK+ versions up to and including at least 1.2.10).
 386  *
 387  * The problem is that unrealizing a GtkText or GtkEntry widget which has the
 388  * active selection completely messes up selection handling, leading to
 389  * non-working selections and crashes.  Removing a widget from its container
 390  * implies unrealizing it and all its child widgets; this triggers the bug if
 391  * the removed widget or any of its children is GtkText or GtkEntry.  As a
 392  * workaround, this function walks through the widget subtree before removing
 393  * and disclaims the selection from all GtkEditable widgets found.
 394  *
 395  * A similar workaround may be needed for gtk_widget_reparent(); currently it
 396  * is not necessary because Sylpheed does not use gtk_widget_reparent() for
 397  * GtkEditable widgets or containers holding such widgets.
 398  */
 399 void gtkut_container_remove(GtkContainer *container, GtkWidget *widget)
 400 {
 401         gtkut_check_before_remove(widget, NULL);
 402         gtk_container_remove(container, widget);
 403 }
 404
 405 void gtkut_window_popup(GtkWidget *window)
 406 {
 407         gint x, y, sx, sy, new_x, new_y;
 408
 409         g_return_if_fail(window != NULL);
 410         g_return_if_fail(window->window != NULL);
 411
 412         sx = gdk_screen_width();
 413         sy = gdk_screen_height();
 414
 415         gdk_window_get_origin(window->window, &x, &y);
 416         new_x = x % sx; if (new_x < 0) new_x = 0;
 417         new_y = y % sy; if (new_y < 0) new_y = 0;
 418         if (new_x != x || new_y != y)
 419                 gdk_window_move(window->window, new_x, new_y);
 420
 421         gdk_window_raise(window->window);
 422         gdk_window_show(window->window);
 423 }
 424
 425 void gtkut_widget_get_uposition(GtkWidget *widget, gint *px, gint *py)
 426 {
 427         gint x, y;
 428         gint sx, sy;
 429
 430         g_return_if_fail(widget != NULL);
 431         g_return_if_fail(widget->window != NULL);
 432
 433         sx = gdk_screen_width();
 434         sy = gdk_screen_height();
 435
 436         /* gdk_window_get_root_origin ever return *rootwindow*'s position */
 437         gdk_window_get_root_origin(widget->window, &x, &y);
 438
 439         x %= sx; if (x < 0) x = 0;
 440         y %= sy; if (y < 0) y = 0;
 441         *px = x;
 442         *py = y;
 443 }
 444
 445 void gtkut_widget_disable_theme_engine(GtkWidget *widget)
 446 {
 447         GtkStyle *style, *new_style;
 448
 449         style = gtk_widget_get_style(widget);
 450
 451         if (style->engine) {
 452                 GtkThemeEngine *engine;
 453
 454                 engine = style->engine;
 455                 style->engine = NULL;
 456                 new_style = gtk_style_copy(style);
 457                 style->engine = engine;
 458                 gtk_widget_set_style(widget, new_style);
 459         }
 460 }
 461
 462 static void gtkut_widget_draw_cb(GtkWidget *widget, GdkRectangle *area,
 463                                  gboolean *flag)
 464 {
 465         *flag = TRUE;
 466         gtk_signal_disconnect_by_data(GTK_OBJECT(widget), flag);
 467 }
 468
 469 void gtkut_widget_wait_for_draw(GtkWidget *widget)
 470 {
 471         gboolean flag = FALSE;
 472
 473         if (!GTK_WIDGET_VISIBLE(widget) || !GTK_WIDGET_MAPPED(widget)) return;
 474
 475         gtk_signal_connect(GTK_OBJECT(widget), "draw",
 476                            GTK_SIGNAL_FUNC(gtkut_widget_draw_cb), &flag);
 477         while (!flag)
 478                 gtk_main_iteration();
 479 }
 480
 481 static void gtkut_clist_bindings_add(GtkWidget *clist)
 482 {
 483         GtkBindingSet *binding_set;
 484
 485         binding_set = gtk_binding_set_by_class
 486                 (GTK_CLIST_CLASS(GTK_OBJECT(clist)->klass));
 487
 488         gtk_binding_entry_add_signal(binding_set, GDK_n, GDK_CONTROL_MASK,
 489                                      "scroll_vertical", 2,
 490                                      GTK_TYPE_ENUM, GTK_SCROLL_STEP_FORWARD,
 491                                      GTK_TYPE_FLOAT, 0.0);
 492         gtk_binding_entry_add_signal(binding_set, GDK_p, GDK_CONTROL_MASK,
 493                                      "scroll_vertical", 2,
 494                                      GTK_TYPE_ENUM, GTK_SCROLL_STEP_BACKWARD,
 495                                      GTK_TYPE_FLOAT, 0.0);
 496 }
 497
 498 void gtkut_widget_init(void)
 499 {
 500         GtkWidget *clist;
 501
 502         clist = gtk_clist_new(1);
 503         gtkut_clist_bindings_add(clist);
 504         gtk_widget_unref(clist);
 505
 506         clist = gtk_ctree_new(1, 0);
 507         gtkut_clist_bindings_add(clist);
 508         gtk_widget_unref(clist);
 509
 510         clist = gtk_sctree_new_with_titles(1, 0, NULL);
 511         gtkut_clist_bindings_add(clist);
 512         gtk_widget_unref(clist);
 513 }
 514
 515 void gtkut_widget_set_app_icon(GtkWidget *widget)
 516 {
 517 #include "pixmaps/sylpheed.xpm"
 518         static GdkPixmap *sylpheedxpm;
 519         static GdkBitmap *sylpheedxpmmask;
 520
 521         g_return_if_fail(widget != NULL);
 522         g_return_if_fail(widget->window != NULL);
 523         if (!sylpheedxpm) {
 524                 PIXMAP_CREATE(widget, sylpheedxpm, sylpheedxpmmask, sylpheed_xpm);
 525         }
 526         gdk_window_set_icon(widget->window, NULL, sylpheedxpm, sylpheedxpmmask);
 527 }
 528
 529 void gtkut_widget_set_composer_icon(GtkWidget *widget)
 530 {
 531         static GdkPixmap *xpm;
 532         static GdkBitmap *bmp;
 533
 534         g_return_if_fail(widget != NULL);
 535         g_return_if_fail(widget->window != NULL);
 536         if (!xpm) {
 537                 stock_pixmap_gdk(widget, STOCK_PIXMAP_MAIL_COMPOSE, &xpm, &bmp);
 538         }
 539         gdk_window_set_icon(widget->window, NULL, xpm, bmp);
 540 }
 541
 542 GtkWidget *gtkut_account_menu_new(GList                 *ac_list,
 543                                   GtkSignalFunc          callback,
 544                                   gpointer               data)
 545 {
 546         GList *cur_ac;
 547         GtkWidget *menu;
 548
 549         g_return_val_if_fail(ac_list != NULL, NULL);
 550
 551         menu = gtk_menu_new();
 552
 553         for (cur_ac = ac_list; cur_ac != NULL; cur_ac = cur_ac->next) {
 554                 gchar *name;
 555                 GtkWidget *menuitem;
 556                 PrefsAccount *account;
 557
 558                 account = (PrefsAccount *) cur_ac->data;
 559                 if (account->name)
 560                         name = g_strdup_printf("%s: %s <%s>",
 561                                                account->account_name,
 562                                                account->name,
 563                                                account->address);
 564                 else
 565                         name = g_strdup_printf("%s: %s",
 566                                                account->account_name,
 567                                                account->address);
 568                 MENUITEM_ADD(menu, menuitem, name, account->account_id);
 569                 g_free(name);
 570                 if (callback != NULL)
 571                         gtk_signal_connect(GTK_OBJECT(menuitem), "activate",
 572                                            callback,
 573                                            data);
 574         }
 575         return menu;
 576 }