src/gtkutils.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2001 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
  36 #if (HAVE_WCTYPE_H && HAVE_WCHAR_H)
  37 #  include <wchar.h>
  38 #  include <wctype.h>
  39 #endif
  40
  41 #include "intl.h"
  42 #include "gtkutils.h"
  43 #include "utils.h"
  44 #include "gtksctree.h"
  45 #include "codeconv.h"
  46
  47 gint gtkut_get_font_width(GdkFont *font)
  48 {
  49         gchar *str;
  50         gint width;
  51
  52         if (conv_get_current_charset() == C_UTF_8)
  53                 str = "Abcdef";
  54         else
  55                 str = _("Abcdef");
  56
  57         width = gdk_string_width(font, str);
  58         width /= strlen(str);
  59
  60         return width;
  61 }
  62
  63 gint gtkut_get_font_height(GdkFont *font)
  64 {
  65         gchar *str;
  66         gint height;
  67
  68         if (conv_get_current_charset() == C_UTF_8)
  69                 str = "Abcdef";
  70         else
  71                 str = _("Abcdef");
  72
  73         height = gdk_string_height(font, str);
  74
  75         return height;
  76 }
  77
  78 void gtkut_convert_int_to_gdk_color(gint rgbvalue, GdkColor *color)
  79 {
  80         g_return_if_fail(color != NULL);
  81
  82         color->pixel = 0L;
  83         color->red   = (int) (((gdouble)((rgbvalue & 0xff0000) >> 16) / 255.0) * 65535.0);
  84         color->green = (int) (((gdouble)((rgbvalue & 0x00ff00) >>  8) / 255.0) * 65535.0);
  85         color->blue  = (int) (((gdouble) (rgbvalue & 0x0000ff)        / 255.0) * 65535.0);
  86 }
  87
  88 void gtkut_button_set_create(GtkWidget **bbox,
  89                              GtkWidget **button1, const gchar *label1,
  90                              GtkWidget **button2, const gchar *label2,
  91                              GtkWidget **button3, const gchar *label3)
  92 {
  93         g_return_if_fail(bbox != NULL);
  94         g_return_if_fail(button1 != NULL);
  95
  96         *bbox = gtk_hbutton_box_new();
  97         gtk_button_box_set_layout(GTK_BUTTON_BOX(*bbox), GTK_BUTTONBOX_END);
  98         gtk_button_box_set_spacing(GTK_BUTTON_BOX(*bbox), 5);
  99
 100         *button1 = gtk_button_new_with_label(label1);
 101         GTK_WIDGET_SET_FLAGS(*button1, GTK_CAN_DEFAULT);
 102         gtk_box_pack_start(GTK_BOX(*bbox), *button1, TRUE, TRUE, 0);
 103         gtk_widget_show(*button1);
 104
 105         if (button2) {
 106                 *button2 = gtk_button_new_with_label(label2);
 107                 GTK_WIDGET_SET_FLAGS(*button2, GTK_CAN_DEFAULT);
 108                 gtk_box_pack_start(GTK_BOX(*bbox), *button2, TRUE, TRUE, 0);
 109                 gtk_widget_show(*button2);
 110         }
 111
 112         if (button3) {
 113                 *button3 = gtk_button_new_with_label(label3);
 114                 GTK_WIDGET_SET_FLAGS(*button3, GTK_CAN_DEFAULT);
 115                 gtk_box_pack_start(GTK_BOX(*bbox), *button3, TRUE, TRUE, 0);
 116                 gtk_widget_show(*button3);
 117         }
 118 }
 119
 120 #define CELL_SPACING 1
 121 #define ROW_TOP_YPIXEL(clist, row) (((clist)->row_height * (row)) + \
 122                                     (((row) + 1) * CELL_SPACING) + \
 123                                     (clist)->voffset)
 124 #define ROW_FROM_YPIXEL(clist, y) (((y) - (clist)->voffset) / \
 125                                    ((clist)->row_height + CELL_SPACING))
 126
 127 void gtkut_ctree_node_move_if_on_the_edge(GtkCTree *ctree, GtkCTreeNode *node)
 128 {
 129         GtkCList *clist = GTK_CLIST(ctree);
 130         gint row;
 131         GtkVisibility row_visibility, prev_row_visibility, next_row_visibility;
 132
 133         g_return_if_fail(ctree != NULL);
 134         g_return_if_fail(node != NULL);
 135
 136         row = g_list_position(clist->row_list, (GList *)node);
 137         if (row < 0 || row >= clist->rows || clist->row_height == 0) return;
 138         row_visibility = gtk_clist_row_is_visible(clist, row);
 139         prev_row_visibility = gtk_clist_row_is_visible(clist, row - 1);
 140         next_row_visibility = gtk_clist_row_is_visible(clist, row + 1);
 141
 142         if (row_visibility == GTK_VISIBILITY_NONE) {
 143                 gtk_clist_moveto(clist, row, -1, 0.5, 0);
 144                 return;
 145         }
 146         if (row_visibility == GTK_VISIBILITY_FULL &&
 147             prev_row_visibility == GTK_VISIBILITY_FULL &&
 148             next_row_visibility == GTK_VISIBILITY_FULL)
 149                 return;
 150         if (prev_row_visibility != GTK_VISIBILITY_FULL &&
 151             next_row_visibility != GTK_VISIBILITY_FULL)
 152                 return;
 153
 154         if (prev_row_visibility != GTK_VISIBILITY_FULL) {
 155                 gtk_clist_moveto(clist, row, -1, 0.2, 0);
 156                 return;
 157         }
 158         if (next_row_visibility != GTK_VISIBILITY_FULL) {
 159                 gtk_clist_moveto(clist, row, -1, 0.8, 0);
 160                 return;
 161         }
 162 }
 163
 164 #undef CELL_SPACING
 165 #undef ROW_TOP_YPIXEL
 166 #undef ROW_FROM_YPIXEL
 167
 168 gint gtkut_ctree_get_nth_from_node(GtkCTree *ctree, GtkCTreeNode *node)
 169 {
 170         g_return_val_if_fail(ctree != NULL, -1);
 171         g_return_val_if_fail(node != NULL, -1);
 172
 173         return g_list_position(GTK_CLIST(ctree)->row_list, (GList *)node);
 174 }
 175
 176 /* get the next node, including the invisible one */
 177 GtkCTreeNode *gtkut_ctree_node_next(GtkCTree *ctree, GtkCTreeNode *node)
 178 {
 179         GtkCTreeNode *parent;
 180
 181         if (!node) return NULL;
 182
 183         if (GTK_CTREE_ROW(node)->children)
 184                 return GTK_CTREE_ROW(node)->children;
 185
 186         if (GTK_CTREE_ROW(node)->sibling)
 187                 return GTK_CTREE_ROW(node)->sibling;
 188
 189         for (parent = GTK_CTREE_ROW(node)->parent; parent != NULL;
 190              parent = GTK_CTREE_ROW(parent)->parent) {
 191                 if (GTK_CTREE_ROW(parent)->sibling)
 192                         return GTK_CTREE_ROW(parent)->sibling;
 193         }
 194
 195         return NULL;
 196 }
 197
 198 GtkCTreeNode *gtkut_ctree_find_collapsed_parent(GtkCTree *ctree,
 199                                                 GtkCTreeNode *node)
 200 {
 201         if (!node) return NULL;
 202
 203         while ((node = GTK_CTREE_ROW(node)->parent) != NULL) {
 204                 if (!GTK_CTREE_ROW(node)->expanded)
 205                         return node;
 206         }
 207
 208         return NULL;
 209 }
 210
 211 void gtkut_ctree_expand_parent_all(GtkCTree *ctree, GtkCTreeNode *node)
 212 {
 213         while ((node = gtkut_ctree_find_collapsed_parent(ctree, node)) != NULL)
 214                 gtk_ctree_expand(ctree, node);
 215 }
 216
 217 void gtkut_ctree_set_focus_row(GtkCTree *ctree, GtkCTreeNode *node)
 218 {
 219         gtkut_clist_set_focus_row(GTK_CLIST(ctree),
 220                                   gtkut_ctree_get_nth_from_node(ctree, node));
 221 }
 222
 223 void gtkut_clist_set_focus_row(GtkCList *clist, gint row)
 224 {
 225         clist->focus_row = row;
 226         GTKUT_CTREE_REFRESH(clist);
 227 }
 228
 229 void gtkut_combo_set_items(GtkCombo *combo, const gchar *str1, ...)
 230 {
 231         va_list args;
 232         gchar *s;
 233         GList *combo_items = NULL;
 234
 235         g_return_if_fail(str1 != NULL);
 236
 237         combo_items = g_list_append(combo_items, (gpointer)str1);
 238         va_start(args, str1);
 239         s = va_arg(args, gchar*);
 240         while (s) {
 241                 combo_items = g_list_append(combo_items, (gpointer)s);
 242                 s = va_arg(args, gchar*);
 243         }
 244         va_end(args);
 245
 246         gtk_combo_set_popdown_strings(combo, combo_items);
 247
 248         g_list_free(combo_items);
 249 }
 250
 251 /*
 252  * Walk through the widget tree and disclaim the selection from all currently
 253  * realized GtkEditable widgets.
 254  */
 255 static void gtkut_check_before_remove(GtkWidget *widget, gpointer unused)
 256 {
 257         g_return_if_fail(widget != NULL);
 258
 259         if (!GTK_WIDGET_REALIZED(widget))
 260                 return; /* all nested widgets must be unrealized too */
 261         if (GTK_IS_CONTAINER(widget))
 262                 gtk_container_forall(GTK_CONTAINER(widget),
 263                                      gtkut_check_before_remove, NULL);
 264         if (GTK_IS_EDITABLE(widget))
 265                 gtk_editable_claim_selection(GTK_EDITABLE(widget),
 266                                              FALSE, GDK_CURRENT_TIME);
 267 }
 268
 269 /*
 270  * Wrapper around gtk_container_remove to work around a bug in GtkText and
 271  * GtkEntry (in all GTK+ versions up to and including at least 1.2.10).
 272  *
 273  * The problem is that unrealizing a GtkText or GtkEntry widget which has the
 274  * active selection completely messes up selection handling, leading to
 275  * non-working selections and crashes.  Removing a widget from its container
 276  * implies unrealizing it and all its child widgets; this triggers the bug if
 277  * the removed widget or any of its children is GtkText or GtkEntry.  As a
 278  * workaround, this function walks through the widget subtree before removing
 279  * and disclaims the selection from all GtkEditable widgets found.
 280  *
 281  * A similar workaround may be needed for gtk_widget_reparent(); currently it
 282  * is not necessary because Sylpheed does not use gtk_widget_reparent() for
 283  * GtkEditable widgets or containers holding such widgets.
 284  */
 285 void gtkut_container_remove(GtkContainer *container, GtkWidget *widget)
 286 {
 287         gtkut_check_before_remove(widget, NULL);
 288         gtk_container_remove(container, widget);
 289 }
 290
 291 gboolean gtkut_stext_match_string(GtkSText *text, gint pos, wchar_t *wcs,
 292                                   gint len, gboolean case_sens)
 293 {
 294         gint match_count = 0;
 295
 296         for (; match_count < len; pos++, match_count++) {
 297                 if (case_sens) {
 298                         if (GTK_STEXT_INDEX(text, pos) != wcs[match_count])
 299                                 break;
 300                 } else {
 301                         if (towlower(GTK_STEXT_INDEX(text, pos)) !=
 302                             towlower(wcs[match_count]))
 303                                 break;
 304                 }
 305         }
 306
 307         if (match_count == len)
 308                 return TRUE;
 309         else
 310                 return FALSE;
 311 }
 312
 313 guint gtkut_stext_str_compare_n(GtkSText *text, guint pos1, guint pos2,
 314                                 guint len, guint text_len)
 315 {
 316         guint i;
 317         GdkWChar ch1, ch2;
 318
 319         for (i = 0; i < len && pos1 + i < text_len && pos2 + i < text_len; i++) {
 320                 ch1 = GTK_STEXT_INDEX(text, pos1 + i);
 321                 ch2 = GTK_STEXT_INDEX(text, pos2 + i);
 322                 if (ch1 != ch2)
 323                         break;
 324         }
 325
 326         return i;
 327 }
 328
 329 guint gtkut_stext_str_compare(GtkSText *text, guint start_pos, guint text_len,
 330                               const gchar *str)
 331 {
 332         wchar_t *wcs;
 333         guint len;
 334         gboolean result;
 335
 336         if (!str) return 0;
 337
 338         wcs = strdup_mbstowcs(str);
 339         if (!wcs) return 0;
 340         len = wcslen(wcs);
 341
 342         if (len > text_len - start_pos)
 343                 result = FALSE;
 344         else
 345                 result = gtkut_stext_match_string(text, start_pos, wcs, len,
 346                                                   TRUE);
 347
 348         g_free(wcs);
 349
 350         return result ? len : 0;
 351 }
 352
 353 gboolean gtkut_stext_is_uri_string(GtkSText *text,
 354                                    guint start_pos, guint text_len)
 355 {
 356         if (gtkut_stext_str_compare(text, start_pos, text_len, "http://") ||
 357             gtkut_stext_str_compare(text, start_pos, text_len, "ftp://")  ||
 358             gtkut_stext_str_compare(text, start_pos, text_len, "https://"))
 359                 return TRUE;
 360
 361         return FALSE;
 362 }
 363
 364 void gtkut_widget_disable_theme_engine(GtkWidget *widget)
 365 {
 366         GtkStyle *style, *new_style;
 367
 368         style = gtk_widget_get_style(widget);
 369
 370         if (style->engine) {
 371                 GtkThemeEngine *engine;
 372
 373                 engine = style->engine;
 374                 style->engine = NULL;
 375                 new_style = gtk_style_copy(style);
 376                 style->engine = engine;
 377                 gtk_widget_set_style(widget, new_style);
 378         }
 379 }
 380
 381 static void gtkut_widget_draw_cb(GtkWidget *widget, GdkRectangle *area,
 382                                  gboolean *flag)
 383 {
 384         *flag = TRUE;
 385         gtk_signal_disconnect_by_data(GTK_OBJECT(widget), flag);
 386 }
 387
 388 void gtkut_widget_wait_for_draw(GtkWidget *widget)
 389 {
 390         gboolean flag = FALSE;
 391
 392         if (!GTK_WIDGET_VISIBLE(widget)) return;
 393
 394         gtk_signal_connect(GTK_OBJECT(widget), "draw",
 395                            GTK_SIGNAL_FUNC(gtkut_widget_draw_cb), &flag);
 396         while (!flag)
 397                 gtk_main_iteration();
 398 }
 399
 400 void gtkut_widget_get_uposition(GtkWidget *widget, gint *px, gint *py)
 401 {
 402         gint x, y;
 403         gint sx, sy;
 404
 405         g_return_if_fail(widget != NULL);
 406         g_return_if_fail(widget->window != NULL);
 407
 408         /* gdk_window_get_root_origin ever return *rootwindow*'s position*/
 409         gdk_window_get_root_origin(widget->window, &x, &y);
 410
 411         sx = gdk_screen_width();
 412         sy = gdk_screen_height();
 413         x %= sx; if (x < 0) x = 0;
 414         y %= sy; if (y < 0) y = 0;
 415         *px = x;
 416         *py = y;
 417 }
 418
 419 static void gtkut_clist_bindings_add(GtkWidget *clist)
 420 {
 421         GtkBindingSet *binding_set;
 422
 423         binding_set = gtk_binding_set_by_class
 424                 (GTK_CLIST_CLASS(GTK_OBJECT(clist)->klass));
 425
 426         gtk_binding_entry_add_signal(binding_set, GDK_n, GDK_CONTROL_MASK,
 427                                      "scroll_vertical", 2,
 428                                      GTK_TYPE_ENUM, GTK_SCROLL_STEP_FORWARD,
 429                                      GTK_TYPE_FLOAT, 0.0);
 430         gtk_binding_entry_add_signal(binding_set, GDK_p, GDK_CONTROL_MASK,
 431                                      "scroll_vertical", 2,
 432                                      GTK_TYPE_ENUM, GTK_SCROLL_STEP_BACKWARD,
 433                                      GTK_TYPE_FLOAT, 0.0);
 434 }
 435
 436 void gtkut_widget_init(void)
 437 {
 438         GtkWidget *clist;
 439
 440         clist = gtk_clist_new(1);
 441         gtkut_clist_bindings_add(clist);
 442         gtk_widget_unref(clist);
 443
 444         clist = gtk_ctree_new(1, 0);
 445         gtkut_clist_bindings_add(clist);
 446         gtk_widget_unref(clist);
 447
 448         clist = gtk_sctree_new_with_titles(1, 0, NULL);
 449         gtkut_clist_bindings_add(clist);
 450         gtk_widget_unref(clist);
 451 }
 452
 453 void gtkut_widget_set_app_icon(GtkWidget *widget)
 454 {
 455 #include "pixmaps/sylpheed.xpm"
 456         static GdkPixmap *sylpheedxpm;
 457         static GdkBitmap *sylpheedxpmmask;
 458
 459         g_return_if_fail(widget != NULL);
 460         g_return_if_fail(widget->window != NULL);
 461         if (!sylpheedxpm) {
 462                 PIXMAP_CREATE(widget, sylpheedxpm, sylpheedxpmmask, sylpheed_xpm);
 463         }
 464         gdk_window_set_icon(widget->window, NULL, sylpheedxpm, sylpheedxpmmask);
 465 }
 466
 467 void gtkut_widget_set_composer_icon(GtkWidget *widget)
 468 {
 469 #include "pixmaps/stock_mail_compose.xpm"
 470         static GdkPixmap *xpm;
 471         static GdkBitmap *bmp;
 472
 473         g_return_if_fail(widget != NULL);
 474         g_return_if_fail(widget->window != NULL);
 475         if (!xpm) {
 476                 PIXMAP_CREATE(widget, xpm, bmp, stock_mail_compose_xpm);
 477         }
 478         gdk_window_set_icon(widget->window, NULL, xpm, bmp);
 479 }
 480
 481