src/gtkutils.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2002 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 <stdarg.h>
  35 #include <sys/stat.h>
  36
  37 #if (HAVE_WCTYPE_H && HAVE_WCHAR_H)
  38 #  include <wchar.h>
  39 #  include <wctype.h>
  40 #endif
  41
  42 #include "intl.h"
  43 #include "gtkutils.h"
  44 #include "utils.h"
  45 #include "gtksctree.h"
  46 #include "codeconv.h"
  47 #include "stock_pixmap.h"
  48 #include "menu.h"
  49 #include "prefs_account.h"
  50
  51 gint gtkut_get_font_width(GdkFont *font)
  52 {
  53         gchar *str;
  54         gint width;
  55
  56         if (conv_get_current_charset() == C_UTF_8)
  57                 str = "Abcdef";
  58         else
  59                 str = _("Abcdef");
  60
  61         width = gdk_string_width(font, str);
  62         width /= strlen(str);
  63
  64         return width;
  65 }
  66
  67 gint gtkut_get_font_height(GdkFont *font)
  68 {
  69         gchar *str;
  70         gint height;
  71
  72         if (conv_get_current_charset() == C_UTF_8)
  73                 str = "Abcdef";
  74         else
  75                 str = _("Abcdef");
  76
  77         height = gdk_string_height(font, str);
  78
  79         return height;
  80 }
  81
  82 void gtkut_convert_int_to_gdk_color(gint rgbvalue, GdkColor *color)
  83 {
  84         g_return_if_fail(color != NULL);
  85
  86         color->pixel = 0L;
  87         color->red   = (int) (((gdouble)((rgbvalue & 0xff0000) >> 16) / 255.0) * 65535.0);
  88         color->green = (int) (((gdouble)((rgbvalue & 0x00ff00) >>  8) / 255.0) * 65535.0);
  89         color->blue  = (int) (((gdouble) (rgbvalue & 0x0000ff)        / 255.0) * 65535.0);
  90 }
  91
  92 void gtkut_button_set_create(GtkWidget **bbox,
  93                              GtkWidget **button1, const gchar *label1,
  94                              GtkWidget **button2, const gchar *label2,
  95                              GtkWidget **button3, const gchar *label3)
  96 {
  97         g_return_if_fail(bbox != NULL);
  98         g_return_if_fail(button1 != NULL);
  99
 100         *bbox = gtk_hbutton_box_new();
 101         gtk_button_box_set_layout(GTK_BUTTON_BOX(*bbox), GTK_BUTTONBOX_END);
 102         gtk_button_box_set_spacing(GTK_BUTTON_BOX(*bbox), 5);
 103
 104         *button1 = gtk_button_new_with_label(label1);
 105         GTK_WIDGET_SET_FLAGS(*button1, GTK_CAN_DEFAULT);
 106         gtk_box_pack_start(GTK_BOX(*bbox), *button1, TRUE, TRUE, 0);
 107         gtk_widget_show(*button1);
 108
 109         if (button2) {
 110                 *button2 = gtk_button_new_with_label(label2);
 111                 GTK_WIDGET_SET_FLAGS(*button2, GTK_CAN_DEFAULT);
 112                 gtk_box_pack_start(GTK_BOX(*bbox), *button2, TRUE, TRUE, 0);
 113                 gtk_widget_show(*button2);
 114         }
 115
 116         if (button3) {
 117                 *button3 = gtk_button_new_with_label(label3);
 118                 GTK_WIDGET_SET_FLAGS(*button3, GTK_CAN_DEFAULT);
 119                 gtk_box_pack_start(GTK_BOX(*bbox), *button3, TRUE, TRUE, 0);
 120                 gtk_widget_show(*button3);
 121         }
 122 }
 123
 124 #define CELL_SPACING 1
 125 #define ROW_TOP_YPIXEL(clist, row) (((clist)->row_height * (row)) + \
 126                                     (((row) + 1) * CELL_SPACING) + \
 127                                     (clist)->voffset)
 128 #define ROW_FROM_YPIXEL(clist, y) (((y) - (clist)->voffset) / \
 129                                    ((clist)->row_height + CELL_SPACING))
 130
 131 void gtkut_ctree_node_move_if_on_the_edge(GtkCTree *ctree, GtkCTreeNode *node)
 132 {
 133         GtkCList *clist = GTK_CLIST(ctree);
 134         gint row;
 135         GtkVisibility row_visibility, prev_row_visibility, next_row_visibility;
 136
 137         g_return_if_fail(ctree != NULL);
 138         g_return_if_fail(node != NULL);
 139
 140         row = g_list_position(clist->row_list, (GList *)node);
 141         if (row < 0 || row >= clist->rows || clist->row_height == 0) return;
 142         row_visibility = gtk_clist_row_is_visible(clist, row);
 143         prev_row_visibility = gtk_clist_row_is_visible(clist, row - 1);
 144         next_row_visibility = gtk_clist_row_is_visible(clist, row + 1);
 145
 146         if (row_visibility == GTK_VISIBILITY_NONE) {
 147                 gtk_clist_moveto(clist, row, -1, 0.5, 0);
 148                 return;
 149         }
 150         if (row_visibility == GTK_VISIBILITY_FULL &&
 151             prev_row_visibility == GTK_VISIBILITY_FULL &&
 152             next_row_visibility == GTK_VISIBILITY_FULL)
 153                 return;
 154         if (prev_row_visibility != GTK_VISIBILITY_FULL &&
 155             next_row_visibility != GTK_VISIBILITY_FULL)
 156                 return;
 157
 158         if (prev_row_visibility != GTK_VISIBILITY_FULL) {
 159                 gtk_clist_moveto(clist, row, -1, 0.2, 0);
 160                 return;
 161         }
 162         if (next_row_visibility != GTK_VISIBILITY_FULL) {
 163                 gtk_clist_moveto(clist, row, -1, 0.8, 0);
 164                 return;
 165         }
 166 }
 167
 168 #undef CELL_SPACING
 169 #undef ROW_TOP_YPIXEL
 170 #undef ROW_FROM_YPIXEL
 171
 172 gint gtkut_ctree_get_nth_from_node(GtkCTree *ctree, GtkCTreeNode *node)
 173 {
 174         g_return_val_if_fail(ctree != NULL, -1);
 175         g_return_val_if_fail(node != NULL, -1);
 176
 177         return g_list_position(GTK_CLIST(ctree)->row_list, (GList *)node);
 178 }
 179
 180 /* get the next node, including the invisible one */
 181 GtkCTreeNode *gtkut_ctree_node_next(GtkCTree *ctree, GtkCTreeNode *node)
 182 {
 183         GtkCTreeNode *parent;
 184
 185         if (!node) return NULL;
 186
 187         if (GTK_CTREE_ROW(node)->children)
 188                 return GTK_CTREE_ROW(node)->children;
 189
 190         if (GTK_CTREE_ROW(node)->sibling)
 191                 return GTK_CTREE_ROW(node)->sibling;
 192
 193         for (parent = GTK_CTREE_ROW(node)->parent; parent != NULL;
 194              parent = GTK_CTREE_ROW(parent)->parent) {
 195                 if (GTK_CTREE_ROW(parent)->sibling)
 196                         return GTK_CTREE_ROW(parent)->sibling;
 197         }
 198
 199         return NULL;
 200 }
 201
 202 GtkCTreeNode *gtkut_ctree_find_collapsed_parent(GtkCTree *ctree,
 203                                                 GtkCTreeNode *node)
 204 {
 205         if (!node) return NULL;
 206
 207         while ((node = GTK_CTREE_ROW(node)->parent) != NULL) {
 208                 if (!GTK_CTREE_ROW(node)->expanded)
 209                         return node;
 210         }
 211
 212         return NULL;
 213 }
 214
 215 void gtkut_ctree_expand_parent_all(GtkCTree *ctree, GtkCTreeNode *node)
 216 {
 217         while ((node = gtkut_ctree_find_collapsed_parent(ctree, node)) != NULL)
 218                 gtk_ctree_expand(ctree, node);
 219 }
 220
 221 void gtkut_ctree_set_focus_row(GtkCTree *ctree, GtkCTreeNode *node)
 222 {
 223         gtkut_clist_set_focus_row(GTK_CLIST(ctree),
 224                                   gtkut_ctree_get_nth_from_node(ctree, node));
 225 }
 226
 227 void gtkut_clist_set_focus_row(GtkCList *clist, gint row)
 228 {
 229         clist->focus_row = row;
 230         GTKUT_CTREE_REFRESH(clist);
 231 }
 232
 233 void gtkut_combo_set_items(GtkCombo *combo, const gchar *str1, ...)
 234 {
 235         va_list args;
 236         gchar *s;
 237         GList *combo_items = NULL;
 238
 239         g_return_if_fail(str1 != NULL);
 240
 241         combo_items = g_list_append(combo_items, (gpointer)str1);
 242         va_start(args, str1);
 243         s = va_arg(args, gchar*);
 244         while (s) {
 245                 combo_items = g_list_append(combo_items, (gpointer)s);
 246                 s = va_arg(args, gchar*);
 247         }
 248         va_end(args);
 249
 250         gtk_combo_set_popdown_strings(combo, combo_items);
 251
 252         g_list_free(combo_items);
 253 }
 254
 255 gchar *gtkut_editable_get_selection(GtkEditable *editable)
 256 {
 257         guint start_pos, end_pos;
 258
 259         g_return_val_if_fail(editable != NULL, NULL);
 260
 261         if (!editable->has_selection) return NULL;
 262
 263         if (editable->selection_start_pos == editable->selection_end_pos)
 264                 return NULL;
 265
 266         if (editable->selection_start_pos < editable->selection_end_pos) {
 267                 start_pos = editable->selection_start_pos;
 268                 end_pos = editable->selection_end_pos;
 269         } else {
 270                 start_pos = editable->selection_end_pos;
 271                 end_pos = editable->selection_start_pos;
 272         }
 273
 274         return gtk_editable_get_chars(editable, start_pos, end_pos);
 275 }
 276
 277 /*
 278  * Walk through the widget tree and disclaim the selection from all currently
 279  * realized GtkEditable widgets.
 280  */
 281 static void gtkut_check_before_remove(GtkWidget *widget, gpointer unused)
 282 {
 283         g_return_if_fail(widget != NULL);
 284
 285         if (!GTK_WIDGET_REALIZED(widget))
 286                 return; /* all nested widgets must be unrealized too */
 287         if (GTK_IS_CONTAINER(widget))
 288                 gtk_container_forall(GTK_CONTAINER(widget),
 289                                      gtkut_check_before_remove, NULL);
 290         if (GTK_IS_EDITABLE(widget))
 291                 gtk_editable_claim_selection(GTK_EDITABLE(widget),
 292                                              FALSE, GDK_CURRENT_TIME);
 293 }
 294
 295 /*
 296  * Wrapper around gtk_container_remove to work around a bug in GtkText and
 297  * GtkEntry (in all GTK+ versions up to and including at least 1.2.10).
 298  *
 299  * The problem is that unrealizing a GtkText or GtkEntry widget which has the
 300  * active selection completely messes up selection handling, leading to
 301  * non-working selections and crashes.  Removing a widget from its container
 302  * implies unrealizing it and all its child widgets; this triggers the bug if
 303  * the removed widget or any of its children is GtkText or GtkEntry.  As a
 304  * workaround, this function walks through the widget subtree before removing
 305  * and disclaims the selection from all GtkEditable widgets found.
 306  *
 307  * A similar workaround may be needed for gtk_widget_reparent(); currently it
 308  * is not necessary because Sylpheed does not use gtk_widget_reparent() for
 309  * GtkEditable widgets or containers holding such widgets.
 310  */
 311 void gtkut_container_remove(GtkContainer *container, GtkWidget *widget)
 312 {
 313         gtkut_check_before_remove(widget, NULL);
 314         gtk_container_remove(container, widget);
 315 }
 316
 317 gboolean gtkut_stext_match_string(GtkSText *text, gint pos, wchar_t *wcs,
 318                                   gint len, gboolean case_sens)
 319 {
 320         gint match_count = 0;
 321
 322         for (; match_count < len; pos++, match_count++) {
 323                 if (case_sens) {
 324                         if (GTK_STEXT_INDEX(text, pos) != wcs[match_count])
 325                                 break;
 326                 } else {
 327                         if (towlower(GTK_STEXT_INDEX(text, pos)) !=
 328                             towlower(wcs[match_count]))
 329                                 break;
 330                 }
 331         }
 332
 333         if (match_count == len)
 334                 return TRUE;
 335         else
 336                 return FALSE;
 337 }
 338
 339 guint gtkut_stext_str_compare_n(GtkSText *text, guint pos1, guint pos2,
 340                                 guint len, guint text_len)
 341 {
 342         guint i;
 343         GdkWChar ch1, ch2;
 344
 345         for (i = 0; i < len && pos1 + i < text_len && pos2 + i < text_len; i++) {
 346                 ch1 = GTK_STEXT_INDEX(text, pos1 + i);
 347                 ch2 = GTK_STEXT_INDEX(text, pos2 + i);
 348                 if (ch1 != ch2)
 349                         break;
 350         }
 351
 352         return i;
 353 }
 354
 355 guint gtkut_stext_str_compare(GtkSText *text, guint start_pos, guint text_len,
 356                               const gchar *str)
 357 {
 358         wchar_t *wcs;
 359         guint len;
 360         gboolean result;
 361
 362         if (!str) return 0;
 363
 364         wcs = strdup_mbstowcs(str);
 365         if (!wcs) return 0;
 366         len = wcslen(wcs);
 367
 368         if (len > text_len - start_pos)
 369                 result = FALSE;
 370         else
 371                 result = gtkut_stext_match_string(text, start_pos, wcs, len,
 372                                                   TRUE);
 373
 374         g_free(wcs);
 375
 376         return result ? len : 0;
 377 }
 378
 379 gboolean gtkut_stext_is_uri_string(GtkSText *text,
 380                                    guint start_pos, guint text_len)
 381 {
 382         if (gtkut_stext_str_compare(text, start_pos, text_len, "http://") ||
 383             gtkut_stext_str_compare(text, start_pos, text_len, "ftp://")  ||
 384             gtkut_stext_str_compare(text, start_pos, text_len, "https://")||
 385             gtkut_stext_str_compare(text, start_pos, text_len, "www."))
 386                 return TRUE;
 387
 388         return FALSE;
 389 }
 390
 391 void gtk_stext_clear(GtkSText *text)
 392 {
 393         gtk_stext_freeze(text);
 394         gtk_stext_set_point(text, 0);
 395         gtk_stext_forward_delete(text, gtk_stext_get_length(text));
 396         gtk_stext_thaw(text);
 397 }
 398
 399 void gtkut_widget_disable_theme_engine(GtkWidget *widget)
 400 {
 401         GtkStyle *style, *new_style;
 402
 403         style = gtk_widget_get_style(widget);
 404
 405         if (style->engine) {
 406                 GtkThemeEngine *engine;
 407
 408                 engine = style->engine;
 409                 style->engine = NULL;
 410                 new_style = gtk_style_copy(style);
 411                 style->engine = engine;
 412                 gtk_widget_set_style(widget, new_style);
 413         }
 414 }
 415
 416 static void gtkut_widget_draw_cb(GtkWidget *widget, GdkRectangle *area,
 417                                  gboolean *flag)
 418 {
 419         *flag = TRUE;
 420         gtk_signal_disconnect_by_data(GTK_OBJECT(widget), flag);
 421 }
 422
 423 void gtkut_widget_wait_for_draw(GtkWidget *widget)
 424 {
 425         gboolean flag = FALSE;
 426
 427         if (!GTK_WIDGET_VISIBLE(widget) || !GTK_WIDGET_MAPPED(widget)) return;
 428
 429         gtk_signal_connect(GTK_OBJECT(widget), "draw",
 430                            GTK_SIGNAL_FUNC(gtkut_widget_draw_cb), &flag);
 431         while (!flag)
 432                 gtk_main_iteration();
 433 }
 434
 435 void gtkut_widget_get_uposition(GtkWidget *widget, gint *px, gint *py)
 436 {
 437         gint x, y;
 438         gint sx, sy;
 439
 440         g_return_if_fail(widget != NULL);
 441         g_return_if_fail(widget->window != NULL);
 442
 443         /* gdk_window_get_root_origin ever return *rootwindow*'s position*/
 444         gdk_window_get_root_origin(widget->window, &x, &y);
 445
 446         sx = gdk_screen_width();
 447         sy = gdk_screen_height();
 448         x %= sx; if (x < 0) x = 0;
 449         y %= sy; if (y < 0) y = 0;
 450         *px = x;
 451         *py = y;
 452 }
 453
 454 static void gtkut_clist_bindings_add(GtkWidget *clist)
 455 {
 456         GtkBindingSet *binding_set;
 457
 458         binding_set = gtk_binding_set_by_class
 459                 (GTK_CLIST_CLASS(GTK_OBJECT(clist)->klass));
 460
 461         gtk_binding_entry_add_signal(binding_set, GDK_n, GDK_CONTROL_MASK,
 462                                      "scroll_vertical", 2,
 463                                      GTK_TYPE_ENUM, GTK_SCROLL_STEP_FORWARD,
 464                                      GTK_TYPE_FLOAT, 0.0);
 465         gtk_binding_entry_add_signal(binding_set, GDK_p, GDK_CONTROL_MASK,
 466                                      "scroll_vertical", 2,
 467                                      GTK_TYPE_ENUM, GTK_SCROLL_STEP_BACKWARD,
 468                                      GTK_TYPE_FLOAT, 0.0);
 469 }
 470
 471 void gtkut_widget_init(void)
 472 {
 473         GtkWidget *clist;
 474
 475         clist = gtk_clist_new(1);
 476         gtkut_clist_bindings_add(clist);
 477         gtk_widget_unref(clist);
 478
 479         clist = gtk_ctree_new(1, 0);
 480         gtkut_clist_bindings_add(clist);
 481         gtk_widget_unref(clist);
 482
 483         clist = gtk_sctree_new_with_titles(1, 0, NULL);
 484         gtkut_clist_bindings_add(clist);
 485         gtk_widget_unref(clist);
 486 }
 487
 488 void gtkut_widget_set_app_icon(GtkWidget *widget)
 489 {
 490 #include "pixmaps/sylpheed.xpm"
 491         static GdkPixmap *sylpheedxpm;
 492         static GdkBitmap *sylpheedxpmmask;
 493
 494         g_return_if_fail(widget != NULL);
 495         g_return_if_fail(widget->window != NULL);
 496         if (!sylpheedxpm) {
 497                 PIXMAP_CREATE(widget, sylpheedxpm, sylpheedxpmmask, sylpheed_xpm);
 498         }
 499         gdk_window_set_icon(widget->window, NULL, sylpheedxpm, sylpheedxpmmask);
 500 }
 501
 502 void gtkut_widget_set_composer_icon(GtkWidget *widget)
 503 {
 504         static GdkPixmap *xpm;
 505         static GdkBitmap *bmp;
 506
 507         g_return_if_fail(widget != NULL);
 508         g_return_if_fail(widget->window != NULL);
 509         if (!xpm) {
 510                 stock_pixmap_gdk(widget, STOCK_PIXMAP_MAIL_COMPOSE, &xpm, &bmp);
 511         }
 512         gdk_window_set_icon(widget->window, NULL, xpm, bmp);
 513 }
 514
 515 GtkWidget *gtkut_account_menu_new(GList                 *ac_list,
 516                                   GtkSignalFunc          callback,
 517                                   gpointer               data)
 518 {
 519         GList *cur_ac;
 520         GtkWidget *menu;
 521
 522         g_return_val_if_fail(ac_list != NULL, NULL);
 523
 524         menu = gtk_menu_new();
 525
 526         for (cur_ac = ac_list; cur_ac != NULL; cur_ac = cur_ac->next) {
 527                 gchar *name;
 528                 GtkWidget *menuitem;
 529                 PrefsAccount *account;
 530
 531                 account = (PrefsAccount *) cur_ac->data;
 532                 if (account->name)
 533                         name = g_strdup_printf("%s: %s <%s>",
 534                                                account->account_name,
 535                                                account->name,
 536                                                account->address);
 537                 else
 538                         name = g_strdup_printf("%s: %s",
 539                                                account->account_name,
 540                                                account->address);
 541                 MENUITEM_ADD(menu, menuitem, name, account->account_id);
 542                 g_free(name);
 543                 if (callback != NULL)
 544                         gtk_signal_connect(GTK_OBJECT(menuitem), "activate",
 545                                            callback,
 546                                            data);
 547         }
 548         return menu;
 549 }