Pileus Git - ~andy/gtk/blob - gtk/gtkstatusbar.c

   1 /* GTK - The GIMP Toolkit
   2  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
   3  * GtkStatusbar Copyright (C) 1998 Shawn T. Amundson
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library 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 GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the
  17  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18  * Boston, MA 02111-1307, USA.
  19  */
  20
  21 /*
  22  * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
  23  * file for a list of people on the GTK+ Team.  See the ChangeLog
  24  * files for a list of changes.  These files are distributed with
  25  * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  26  */
  27
  28 #include <config.h>
  29 #include "gtkframe.h"
  30 #include "gtklabel.h"
  31 #include "gtkmarshalers.h"
  32 #include "gtkstatusbar.h"
  33 #include "gtkwindow.h"
  34 #include "gtkprivate.h"
  35 #include "gtkintl.h"
  36 #include "gtkalias.h"
  37
  38 typedef struct _GtkStatusbarMsg GtkStatusbarMsg;
  39
  40 struct _GtkStatusbarMsg
  41 {
  42   gchar *text;
  43   guint context_id;
  44   guint message_id;
  45 };
  46
  47 enum
  48 {
  49   SIGNAL_TEXT_PUSHED,
  50   SIGNAL_TEXT_POPPED,
  51   SIGNAL_LAST
  52 };
  53
  54 enum
  55 {
  56   PROP_ZERO,
  57   PROP_HAS_RESIZE_GRIP
  58 };
  59
  60 static void     gtk_statusbar_destroy           (GtkObject         *object);
  61 static void     gtk_statusbar_update            (GtkStatusbar      *statusbar,
  62                                                  guint              context_id,
  63                                                  const gchar       *text);
  64 static void     gtk_statusbar_size_allocate     (GtkWidget         *widget,
  65                                                  GtkAllocation     *allocation);
  66 static void     gtk_statusbar_realize           (GtkWidget         *widget);
  67 static void     gtk_statusbar_unrealize         (GtkWidget         *widget);
  68 static void     gtk_statusbar_map               (GtkWidget         *widget);
  69 static void     gtk_statusbar_unmap             (GtkWidget         *widget);
  70 static gboolean gtk_statusbar_button_press      (GtkWidget         *widget,
  71                                                  GdkEventButton    *event);
  72 static gboolean gtk_statusbar_expose_event      (GtkWidget         *widget,
  73                                                  GdkEventExpose    *event);
  74 static void     gtk_statusbar_size_request      (GtkWidget         *widget,
  75                                                  GtkRequisition    *requisition);
  76 static void     gtk_statusbar_size_allocate     (GtkWidget         *widget,
  77                                                  GtkAllocation     *allocation);
  78 static void     gtk_statusbar_direction_changed (GtkWidget         *widget,
  79                                                  GtkTextDirection   prev_dir);
  80 static void     gtk_statusbar_create_window     (GtkStatusbar      *statusbar);
  81 static void     gtk_statusbar_destroy_window    (GtkStatusbar      *statusbar);
  82 static void     gtk_statusbar_get_property      (GObject           *object,
  83                                                  guint              prop_id,
  84                                                  GValue            *value,
  85                                                  GParamSpec        *pspec);
  86 static void     gtk_statusbar_set_property      (GObject           *object,
  87                                                  guint              prop_id,
  88                                                  const GValue      *value,
  89                                                  GParamSpec        *pspec);
  90 static void     label_selectable_changed        (GtkWidget         *label,
  91                                                  GParamSpec        *pspec,
  92                                                  gpointer           data);
  93
  94
  95 static guint              statusbar_signals[SIGNAL_LAST] = { 0 };
  96
  97 G_DEFINE_TYPE (GtkStatusbar, gtk_statusbar, GTK_TYPE_HBOX)
  98
  99 static void
 100 gtk_statusbar_class_init (GtkStatusbarClass *class)
 101 {
 102   GObjectClass *gobject_class;
 103   GtkObjectClass *object_class;
 104   GtkWidgetClass *widget_class;
 105
 106   gobject_class = (GObjectClass *) class;
 107   object_class = (GtkObjectClass *) class;
 108   widget_class = (GtkWidgetClass *) class;
 109
 110   gobject_class->set_property = gtk_statusbar_set_property;
 111   gobject_class->get_property = gtk_statusbar_get_property;
 112
 113   object_class->destroy = gtk_statusbar_destroy;
 114
 115   widget_class->realize = gtk_statusbar_realize;
 116   widget_class->unrealize = gtk_statusbar_unrealize;
 117   widget_class->map = gtk_statusbar_map;
 118   widget_class->unmap = gtk_statusbar_unmap;
 119
 120   widget_class->button_press_event = gtk_statusbar_button_press;
 121   widget_class->expose_event = gtk_statusbar_expose_event;
 122
 123   widget_class->size_request = gtk_statusbar_size_request;
 124   widget_class->size_allocate = gtk_statusbar_size_allocate;
 125
 126   widget_class->direction_changed = gtk_statusbar_direction_changed;
 127
 128   class->text_pushed = gtk_statusbar_update;
 129   class->text_popped = gtk_statusbar_update;
 130
 131   /**
 132    * GtkStatusbar:has-resize-grip:
 133    *
 134    * Whether the statusbar has a grip for resizing the toplevel window.
 135    *
 136    * Since: 2.4
 137    */
 138   g_object_class_install_property (gobject_class,
 139                                    PROP_HAS_RESIZE_GRIP,
 140                                    g_param_spec_boolean ("has-resize-grip",
 141                                                          P_("Has Resize Grip"),
 142                                                          P_("Whether the statusbar has a grip for resizing the toplevel"),
 143                                                          TRUE,
 144                                                          GTK_PARAM_READWRITE));
 145   statusbar_signals[SIGNAL_TEXT_PUSHED] =
 146     g_signal_new (I_("text_pushed"),
 147                   G_OBJECT_CLASS_TYPE (class),
 148                   G_SIGNAL_RUN_LAST,
 149                   G_STRUCT_OFFSET (GtkStatusbarClass, text_pushed),
 150                   NULL, NULL,
 151                   _gtk_marshal_VOID__UINT_STRING,
 152                   G_TYPE_NONE, 2,
 153                   G_TYPE_UINT,
 154                   G_TYPE_STRING);
 155   statusbar_signals[SIGNAL_TEXT_POPPED] =
 156     g_signal_new (I_("text_popped"),
 157                   G_OBJECT_CLASS_TYPE (class),
 158                   G_SIGNAL_RUN_LAST,
 159                   G_STRUCT_OFFSET (GtkStatusbarClass, text_popped),
 160                   NULL, NULL,
 161                   _gtk_marshal_VOID__UINT_STRING,
 162                   G_TYPE_NONE, 2,
 163                   G_TYPE_UINT,
 164                   G_TYPE_STRING);
 165
 166   gtk_widget_class_install_style_property (widget_class,
 167                                            g_param_spec_enum ("shadow-type",
 168                                                               P_("Shadow type"),
 169                                                               P_("Style of bevel around the statusbar text"),
 170                                                               GTK_TYPE_SHADOW_TYPE,
 171                                                               GTK_SHADOW_IN,
 172                                                               GTK_PARAM_READABLE));
 173 }
 174
 175 static void
 176 gtk_statusbar_init (GtkStatusbar *statusbar)
 177 {
 178   GtkBox *box;
 179   GtkShadowType shadow_type;
 180
 181   box = GTK_BOX (statusbar);
 182
 183   box->spacing = 2;
 184   box->homogeneous = FALSE;
 185
 186   statusbar->has_resize_grip = TRUE;
 187
 188   gtk_widget_style_get (GTK_WIDGET (statusbar), "shadow-type", &shadow_type, NULL);
 189
 190   statusbar->frame = gtk_frame_new (NULL);
 191   gtk_frame_set_shadow_type (GTK_FRAME (statusbar->frame), shadow_type);
 192   gtk_box_pack_start (box, statusbar->frame, TRUE, TRUE, 0);
 193   gtk_widget_show (statusbar->frame);
 194
 195   statusbar->label = gtk_label_new ("");
 196   gtk_label_set_single_line_mode (GTK_LABEL (statusbar->label), TRUE);
 197   gtk_misc_set_alignment (GTK_MISC (statusbar->label), 0.0, 0.5);
 198   g_signal_connect (statusbar->label, "notify::selectable",
 199                     G_CALLBACK (label_selectable_changed), statusbar);
 200   gtk_label_set_ellipsize (GTK_LABEL (statusbar->label), PANGO_ELLIPSIZE_END);
 201   gtk_container_add (GTK_CONTAINER (statusbar->frame), statusbar->label);
 202   gtk_widget_show (statusbar->label);
 203
 204   statusbar->seq_context_id = 1;
 205   statusbar->seq_message_id = 1;
 206   statusbar->messages = NULL;
 207   statusbar->keys = NULL;
 208 }
 209
 210 GtkWidget*
 211 gtk_statusbar_new (void)
 212 {
 213   return g_object_new (GTK_TYPE_STATUSBAR, NULL);
 214 }
 215
 216 static void
 217 gtk_statusbar_update (GtkStatusbar *statusbar,
 218                       guint         context_id,
 219                       const gchar  *text)
 220 {
 221   g_return_if_fail (GTK_IS_STATUSBAR (statusbar));
 222
 223   if (!text)
 224     text = "";
 225
 226   gtk_label_set_text (GTK_LABEL (statusbar->label), text);
 227 }
 228
 229 guint
 230 gtk_statusbar_get_context_id (GtkStatusbar *statusbar,
 231                               const gchar  *context_description)
 232 {
 233   gchar *string;
 234   guint *id;
 235
 236   g_return_val_if_fail (GTK_IS_STATUSBAR (statusbar), 0);
 237   g_return_val_if_fail (context_description != NULL, 0);
 238
 239   /* we need to preserve namespaces on object datas */
 240   string = g_strconcat ("gtk-status-bar-context:", context_description, NULL);
 241
 242   id = g_object_get_data (G_OBJECT (statusbar), string);
 243   if (!id)
 244     {
 245       id = g_new (guint, 1);
 246       *id = statusbar->seq_context_id++;
 247       g_object_set_data_full (G_OBJECT (statusbar), string, id, g_free);
 248       statusbar->keys = g_slist_prepend (statusbar->keys, string);
 249     }
 250   else
 251     g_free (string);
 252
 253   return *id;
 254 }
 255
 256 guint
 257 gtk_statusbar_push (GtkStatusbar *statusbar,
 258                     guint         context_id,
 259                     const gchar  *text)
 260 {
 261   GtkStatusbarMsg *msg;
 262
 263   g_return_val_if_fail (GTK_IS_STATUSBAR (statusbar), 0);
 264   g_return_val_if_fail (text != NULL, 0);
 265
 266   msg = g_slice_new (GtkStatusbarMsg);
 267   msg->text = g_strdup (text);
 268   msg->context_id = context_id;
 269   msg->message_id = statusbar->seq_message_id++;
 270
 271   statusbar->messages = g_slist_prepend (statusbar->messages, msg);
 272
 273   g_signal_emit (statusbar,
 274                  statusbar_signals[SIGNAL_TEXT_PUSHED],
 275                  0,
 276                  msg->context_id,
 277                  msg->text);
 278
 279   return msg->message_id;
 280 }
 281
 282 void
 283 gtk_statusbar_pop (GtkStatusbar *statusbar,
 284                    guint         context_id)
 285 {
 286   GtkStatusbarMsg *msg;
 287
 288   g_return_if_fail (GTK_IS_STATUSBAR (statusbar));
 289
 290   if (statusbar->messages)
 291     {
 292       GSList *list;
 293
 294       for (list = statusbar->messages; list; list = list->next)
 295         {
 296           msg = list->data;
 297
 298           if (msg->context_id == context_id)
 299             {
 300               statusbar->messages = g_slist_remove_link (statusbar->messages,
 301                                                          list);
 302               g_free (msg->text);
 303               g_slice_free (GtkStatusbarMsg, msg);
 304               g_slist_free_1 (list);
 305               break;
 306             }
 307         }
 308     }
 309
 310   msg = statusbar->messages ? statusbar->messages->data : NULL;
 311
 312   g_signal_emit (statusbar,
 313                  statusbar_signals[SIGNAL_TEXT_POPPED],
 314                  0,
 315                  (guint) (msg ? msg->context_id : 0),
 316                  msg ? msg->text : NULL);
 317 }
 318
 319 void
 320 gtk_statusbar_remove (GtkStatusbar *statusbar,
 321                       guint        context_id,
 322                       guint        message_id)
 323 {
 324   GtkStatusbarMsg *msg;
 325
 326   g_return_if_fail (GTK_IS_STATUSBAR (statusbar));
 327   g_return_if_fail (message_id > 0);
 328
 329   msg = statusbar->messages ? statusbar->messages->data : NULL;
 330   if (msg)
 331     {
 332       GSList *list;
 333
 334       /* care about signal emission if the topmost item is removed */
 335       if (msg->context_id == context_id &&
 336           msg->message_id == message_id)
 337         {
 338           gtk_statusbar_pop (statusbar, context_id);
 339           return;
 340         }
 341
 342       for (list = statusbar->messages; list; list = list->next)
 343         {
 344           msg = list->data;
 345
 346           if (msg->context_id == context_id &&
 347               msg->message_id == message_id)
 348             {
 349               statusbar->messages = g_slist_remove_link (statusbar->messages, list);
 350               g_free (msg->text);
 351               g_slice_free (GtkStatusbarMsg, msg);
 352               g_slist_free_1 (list);
 353
 354               break;
 355             }
 356         }
 357     }
 358 }
 359
 360 void
 361 gtk_statusbar_set_has_resize_grip (GtkStatusbar *statusbar,
 362                                    gboolean      setting)
 363 {
 364   g_return_if_fail (GTK_IS_STATUSBAR (statusbar));
 365
 366   setting = setting != FALSE;
 367
 368   if (setting != statusbar->has_resize_grip)
 369     {
 370       statusbar->has_resize_grip = setting;
 371       gtk_widget_queue_resize (statusbar->label);
 372       gtk_widget_queue_draw (GTK_WIDGET (statusbar));
 373
 374       if (GTK_WIDGET_REALIZED (statusbar))
 375         {
 376           if (statusbar->has_resize_grip && statusbar->grip_window == NULL)
 377             {
 378               gtk_statusbar_create_window (statusbar);
 379               if (GTK_WIDGET_MAPPED (statusbar))
 380                 gdk_window_show (statusbar->grip_window);
 381             }
 382           else if (!statusbar->has_resize_grip && statusbar->grip_window != NULL)
 383             gtk_statusbar_destroy_window (statusbar);
 384         }
 385
 386       g_object_notify (G_OBJECT (statusbar), "has-resize-grip");
 387     }
 388 }
 389
 390 gboolean
 391 gtk_statusbar_get_has_resize_grip (GtkStatusbar *statusbar)
 392 {
 393   g_return_val_if_fail (GTK_IS_STATUSBAR (statusbar), FALSE);
 394
 395   return statusbar->has_resize_grip;
 396 }
 397
 398 static void
 399 gtk_statusbar_destroy (GtkObject *object)
 400 {
 401   GtkStatusbar *statusbar;
 402   GSList *list;
 403
 404   g_return_if_fail (GTK_IS_STATUSBAR (object));
 405
 406   statusbar = GTK_STATUSBAR (object);
 407
 408   for (list = statusbar->messages; list; list = list->next)
 409     {
 410       GtkStatusbarMsg *msg;
 411
 412       msg = list->data;
 413       g_free (msg->text);
 414       g_slice_free (GtkStatusbarMsg, msg);
 415     }
 416   g_slist_free (statusbar->messages);
 417   statusbar->messages = NULL;
 418
 419   for (list = statusbar->keys; list; list = list->next)
 420     g_free (list->data);
 421   g_slist_free (statusbar->keys);
 422   statusbar->keys = NULL;
 423
 424   GTK_OBJECT_CLASS (gtk_statusbar_parent_class)->destroy (object);
 425 }
 426
 427 static void
 428 gtk_statusbar_set_property (GObject      *object,
 429                             guint         prop_id,
 430                             const GValue *value,
 431                             GParamSpec   *pspec)
 432 {
 433   GtkStatusbar *statusbar = GTK_STATUSBAR (object);
 434
 435   switch (prop_id)
 436     {
 437     case PROP_HAS_RESIZE_GRIP:
 438       gtk_statusbar_set_has_resize_grip (statusbar, g_value_get_boolean (value));
 439       break;
 440     default:
 441       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 442       break;
 443     }
 444 }
 445
 446 static void
 447 gtk_statusbar_get_property (GObject    *object,
 448                             guint       prop_id,
 449                             GValue     *value,
 450                             GParamSpec *pspec)
 451 {
 452   GtkStatusbar *statusbar = GTK_STATUSBAR (object);
 453
 454   switch (prop_id)
 455     {
 456     case PROP_HAS_RESIZE_GRIP:
 457       g_value_set_boolean (value, statusbar->has_resize_grip);
 458       break;
 459     default:
 460       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 461       break;
 462     }
 463 }
 464
 465 static GdkWindowEdge
 466 get_grip_edge (GtkStatusbar *statusbar)
 467 {
 468   GtkWidget *widget = GTK_WIDGET (statusbar);
 469
 470   if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
 471     return GDK_WINDOW_EDGE_SOUTH_EAST;
 472   else
 473     return GDK_WINDOW_EDGE_SOUTH_WEST;
 474 }
 475
 476 static void
 477 get_grip_rect (GtkStatusbar *statusbar,
 478                GdkRectangle *rect)
 479 {
 480   GtkWidget *widget;
 481   gint w, h;
 482
 483   widget = GTK_WIDGET (statusbar);
 484
 485   /* These are in effect the max/default size of the grip. */
 486   w = 18;
 487   h = 18;
 488
 489   if (w > widget->allocation.width)
 490     w = widget->allocation.width;
 491
 492   if (h > widget->allocation.height - widget->style->ythickness)
 493     h = widget->allocation.height - widget->style->ythickness;
 494
 495   rect->width = w;
 496   rect->height = h;
 497   rect->y = widget->allocation.y + widget->allocation.height - h;
 498
 499   if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
 500     rect->x = widget->allocation.x + widget->allocation.width - w;
 501   else
 502     rect->x = widget->allocation.x + widget->style->xthickness;
 503 }
 504
 505 static void
 506 set_grip_cursor (GtkStatusbar *statusbar)
 507 {
 508   if (statusbar->has_resize_grip)
 509     {
 510       GtkWidget *widget = GTK_WIDGET (statusbar);
 511       GdkDisplay *display = gtk_widget_get_display (widget);
 512       GdkCursorType cursor_type;
 513       GdkCursor *cursor;
 514
 515       if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
 516         cursor_type = GDK_BOTTOM_RIGHT_CORNER;
 517       else
 518         cursor_type = GDK_BOTTOM_LEFT_CORNER;
 519
 520       cursor = gdk_cursor_new_for_display (display, cursor_type);
 521       gdk_window_set_cursor (statusbar->grip_window, cursor);
 522       gdk_cursor_unref (cursor);
 523     }
 524 }
 525
 526 static void
 527 gtk_statusbar_create_window (GtkStatusbar *statusbar)
 528 {
 529   GtkWidget *widget;
 530   GdkWindowAttr attributes;
 531   gint attributes_mask;
 532   GdkRectangle rect;
 533
 534   g_return_if_fail (GTK_WIDGET_REALIZED (statusbar));
 535   g_return_if_fail (statusbar->has_resize_grip);
 536
 537   widget = GTK_WIDGET (statusbar);
 538
 539   get_grip_rect (statusbar, &rect);
 540
 541   attributes.x = rect.x;
 542   attributes.y = rect.y;
 543   attributes.width = rect.width;
 544   attributes.height = rect.height;
 545   attributes.window_type = GDK_WINDOW_CHILD;
 546   attributes.wclass = GDK_INPUT_ONLY;
 547   attributes.event_mask = gtk_widget_get_events (widget) |
 548     GDK_BUTTON_PRESS_MASK;
 549
 550   attributes_mask = GDK_WA_X | GDK_WA_Y;
 551
 552   statusbar->grip_window = gdk_window_new (widget->window,
 553                                            &attributes, attributes_mask);
 554
 555   gdk_window_set_user_data (statusbar->grip_window, widget);
 556
 557   set_grip_cursor (statusbar);
 558 }
 559
 560 static void
 561 gtk_statusbar_direction_changed (GtkWidget        *widget,
 562                                  GtkTextDirection  prev_dir)
 563 {
 564   GtkStatusbar *statusbar = GTK_STATUSBAR (widget);
 565
 566   set_grip_cursor (statusbar);
 567 }
 568
 569 static void
 570 gtk_statusbar_destroy_window (GtkStatusbar *statusbar)
 571 {
 572   gdk_window_set_user_data (statusbar->grip_window, NULL);
 573   gdk_window_destroy (statusbar->grip_window);
 574   statusbar->grip_window = NULL;
 575 }
 576
 577 static void
 578 gtk_statusbar_realize (GtkWidget *widget)
 579 {
 580   GtkStatusbar *statusbar;
 581
 582   statusbar = GTK_STATUSBAR (widget);
 583
 584   (* GTK_WIDGET_CLASS (gtk_statusbar_parent_class)->realize) (widget);
 585
 586   if (statusbar->has_resize_grip)
 587     gtk_statusbar_create_window (statusbar);
 588 }
 589
 590 static void
 591 gtk_statusbar_unrealize (GtkWidget *widget)
 592 {
 593   GtkStatusbar *statusbar;
 594
 595   statusbar = GTK_STATUSBAR (widget);
 596
 597   if (statusbar->grip_window)
 598     gtk_statusbar_destroy_window (statusbar);
 599
 600   (* GTK_WIDGET_CLASS (gtk_statusbar_parent_class)->unrealize) (widget);
 601 }
 602
 603 static void
 604 gtk_statusbar_map (GtkWidget *widget)
 605 {
 606   GtkStatusbar *statusbar;
 607
 608   statusbar = GTK_STATUSBAR (widget);
 609
 610   (* GTK_WIDGET_CLASS (gtk_statusbar_parent_class)->map) (widget);
 611
 612   if (statusbar->grip_window)
 613     gdk_window_show (statusbar->grip_window);
 614 }
 615
 616 static void
 617 gtk_statusbar_unmap (GtkWidget *widget)
 618 {
 619   GtkStatusbar *statusbar;
 620
 621   statusbar = GTK_STATUSBAR (widget);
 622
 623   if (statusbar->grip_window)
 624     gdk_window_hide (statusbar->grip_window);
 625
 626   (* GTK_WIDGET_CLASS (gtk_statusbar_parent_class)->unmap) (widget);
 627 }
 628
 629 static gboolean
 630 gtk_statusbar_button_press (GtkWidget      *widget,
 631                             GdkEventButton *event)
 632 {
 633   GtkStatusbar *statusbar;
 634   GtkWidget *ancestor;
 635   GdkWindowEdge edge;
 636
 637   statusbar = GTK_STATUSBAR (widget);
 638
 639   if (!statusbar->has_resize_grip ||
 640       event->type != GDK_BUTTON_PRESS ||
 641       event->window != statusbar->grip_window)
 642     return FALSE;
 643
 644   ancestor = gtk_widget_get_toplevel (widget);
 645
 646   if (!GTK_IS_WINDOW (ancestor))
 647     return FALSE;
 648
 649   edge = get_grip_edge (statusbar);
 650
 651   if (event->button == 1)
 652     gtk_window_begin_resize_drag (GTK_WINDOW (ancestor),
 653                                   edge,
 654                                   event->button,
 655                                   event->x_root, event->y_root,
 656                                   event->time);
 657   else if (event->button == 2)
 658     gtk_window_begin_move_drag (GTK_WINDOW (ancestor),
 659                                 event->button,
 660                                 event->x_root, event->y_root,
 661                                 event->time);
 662   else
 663     return FALSE;
 664
 665   return TRUE;
 666 }
 667
 668 static gboolean
 669 gtk_statusbar_expose_event (GtkWidget      *widget,
 670                             GdkEventExpose *event)
 671 {
 672   GtkStatusbar *statusbar;
 673   GdkRectangle rect;
 674
 675   statusbar = GTK_STATUSBAR (widget);
 676
 677   GTK_WIDGET_CLASS (gtk_statusbar_parent_class)->expose_event (widget, event);
 678
 679   if (statusbar->has_resize_grip)
 680     {
 681       GdkWindowEdge edge;
 682
 683       edge = get_grip_edge (statusbar);
 684
 685       get_grip_rect (statusbar, &rect);
 686
 687       gtk_paint_resize_grip (widget->style,
 688                              widget->window,
 689                              GTK_WIDGET_STATE (widget),
 690                              NULL,
 691                              widget,
 692                              "statusbar",
 693                              edge,
 694                              rect.x, rect.y,
 695                              /* don't draw grip over the frame, though you
 696                               * can click on the frame.
 697                               */
 698                              rect.width - widget->style->xthickness,
 699                              rect.height - widget->style->ythickness);
 700     }
 701
 702   return FALSE;
 703 }
 704
 705 static void
 706 gtk_statusbar_size_request (GtkWidget      *widget,
 707                             GtkRequisition *requisition)
 708 {
 709   GtkStatusbar *statusbar;
 710   GtkShadowType shadow_type;
 711
 712   statusbar = GTK_STATUSBAR (widget);
 713
 714   gtk_widget_style_get (GTK_WIDGET (statusbar), "shadow-type", &shadow_type, NULL);
 715   gtk_frame_set_shadow_type (GTK_FRAME (statusbar->frame), shadow_type);
 716
 717   GTK_WIDGET_CLASS (gtk_statusbar_parent_class)->size_request (widget, requisition);
 718 }
 719
 720 /* look for extra children between the frame containing
 721  * the label and where we want to draw the resize grip
 722  */
 723 static gboolean
 724 has_extra_children (GtkStatusbar *statusbar)
 725 {
 726   GList *l;
 727   GtkBoxChild *child, *frame;
 728
 729   frame = NULL;
 730   for (l = GTK_BOX (statusbar)->children; l; l = l->next)
 731     {
 732       frame = l->data;
 733
 734       if (frame->widget == statusbar->frame)
 735         break;
 736     }
 737
 738   for (l = l->next; l; l = l->next)
 739     {
 740       child = l->data;
 741
 742       if (!GTK_WIDGET_VISIBLE (child->widget))
 743         continue;
 744
 745       if (frame->pack == GTK_PACK_START || child->pack == GTK_PACK_END)
 746         return TRUE;
 747     }
 748
 749   return FALSE;
 750 }
 751
 752 static void
 753 gtk_statusbar_size_allocate  (GtkWidget     *widget,
 754                               GtkAllocation *allocation)
 755 {
 756   GtkStatusbar *statusbar = GTK_STATUSBAR (widget);
 757   gboolean extra_children = FALSE;
 758   GdkRectangle rect;
 759
 760   if (statusbar->has_resize_grip)
 761     {
 762       widget->allocation = *allocation;
 763       get_grip_rect (statusbar, &rect);
 764
 765       extra_children = has_extra_children (statusbar);
 766
 767       /* If there are extra children, we don't want them to occupy
 768        * the space where we draw the resize grip, so we temporarily
 769        * shrink the allocation.
 770        * If there are no extra children, we want the frame to get
 771        * the full allocation, and we fix up the allocation of the
 772        * label afterwards to make room for the grip.
 773        */
 774       if (extra_children)
 775         {
 776           allocation->width -= rect.width;
 777           if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 778             allocation->x += rect.width;
 779         }
 780     }
 781
 782   /* chain up normally */
 783   GTK_WIDGET_CLASS (gtk_statusbar_parent_class)->size_allocate (widget, allocation);
 784
 785   if (statusbar->has_resize_grip)
 786     {
 787       if (statusbar->grip_window)
 788         {
 789           gdk_window_raise (statusbar->grip_window);
 790           gdk_window_move_resize (statusbar->grip_window,
 791                                   rect.x, rect.y,
 792                                   rect.width, rect.height);
 793         }
 794
 795       if (extra_children)
 796         {
 797           allocation->width += rect.width;
 798           if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 799             allocation->x -= rect.width;
 800
 801           widget->allocation = *allocation;
 802         }
 803       else
 804         {
 805           if (statusbar->label->allocation.width + rect.width > statusbar->frame->allocation.width)
 806             {
 807               /* shrink the label to make room for the grip */
 808               *allocation = statusbar->label->allocation;
 809               allocation->width = MAX (1, allocation->width - rect.width);
 810               if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 811                 allocation->x += statusbar->label->allocation.width - allocation->width;
 812
 813               gtk_widget_size_allocate (statusbar->label, allocation);
 814             }
 815         }
 816     }
 817 }
 818
 819 static void
 820 label_selectable_changed (GtkWidget  *label,
 821                           GParamSpec *pspec,
 822                           gpointer    data)
 823 {
 824   GtkStatusbar *statusbar = GTK_STATUSBAR (data);
 825
 826   if (statusbar &&
 827       statusbar->has_resize_grip && statusbar->grip_window)
 828     gdk_window_raise (statusbar->grip_window);
 829 }
 830
 831 #define __GTK_STATUSBAR_C__
 832 #include "gtkaliasdef.c"