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