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_class_init        (GtkStatusbarClass *class);
  61 static void     gtk_statusbar_init              (GtkStatusbar      *statusbar);
  62 static void     gtk_statusbar_destroy           (GtkObject         *object);
  63 static void     gtk_statusbar_update            (GtkStatusbar      *statusbar,
  64                                                  guint              context_id,
  65                                                  const gchar       *text);
  66 static void     gtk_statusbar_size_allocate     (GtkWidget         *widget,
  67                                                  GtkAllocation     *allocation);
  68 static void     gtk_statusbar_realize           (GtkWidget         *widget);
  69 static void     gtk_statusbar_unrealize         (GtkWidget         *widget);
  70 static void     gtk_statusbar_map               (GtkWidget         *widget);
  71 static void     gtk_statusbar_unmap             (GtkWidget         *widget);
  72 static gboolean gtk_statusbar_button_press      (GtkWidget         *widget,
  73                                                  GdkEventButton    *event);
  74 static gboolean gtk_statusbar_expose_event      (GtkWidget         *widget,
  75                                                  GdkEventExpose    *event);
  76 static void     gtk_statusbar_size_request      (GtkWidget         *widget,
  77                                                  GtkRequisition    *requisition);
  78 static void     gtk_statusbar_size_allocate     (GtkWidget         *widget,
  79                                                  GtkAllocation     *allocation);
  80 static void     gtk_statusbar_direction_changed (GtkWidget         *widget,
  81                                                  GtkTextDirection   prev_dir);
  82 static void     gtk_statusbar_create_window     (GtkStatusbar      *statusbar);
  83 static void     gtk_statusbar_destroy_window    (GtkStatusbar      *statusbar);
  84 static void     gtk_statusbar_get_property      (GObject           *object,
  85                                                  guint              prop_id,
  86                                                  GValue            *value,
  87                                                  GParamSpec        *pspec);
  88 static void     gtk_statusbar_set_property      (GObject           *object,
  89                                                  guint              prop_id,
  90                                                  const GValue      *value,
  91                                                  GParamSpec        *pspec);
  92 static void     label_selectable_changed        (GtkWidget         *label,
  93                                                  GParamSpec        *pspec,
  94                                                  gpointer           data);
  95
  96
  97 static GtkContainerClass *parent_class;
  98 static guint              statusbar_signals[SIGNAL_LAST] = { 0 };
  99
 100 GType
 101 gtk_statusbar_get_type (void)
 102 {
 103   static GType statusbar_type = 0;
 104
 105   if (!statusbar_type)
 106     {
 107       static const GTypeInfo statusbar_info =
 108       {
 109         sizeof (GtkStatusbarClass),
 110         NULL,           /* base_init */
 111         NULL,           /* base_finalize */
 112         (GClassInitFunc) gtk_statusbar_class_init,
 113         NULL,           /* class_finalize */
 114         NULL,           /* class_data */
 115         sizeof (GtkStatusbar),
 116         0,              /* n_preallocs */
 117         (GInstanceInitFunc) gtk_statusbar_init,
 118       };
 119
 120       statusbar_type = g_type_register_static (GTK_TYPE_HBOX, "GtkStatusbar",
 121                                                &statusbar_info, 0);
 122     }
 123
 124   return statusbar_type;
 125 }
 126
 127 static void
 128 gtk_statusbar_class_init (GtkStatusbarClass *class)
 129 {
 130   GObjectClass *gobject_class;
 131   GtkObjectClass *object_class;
 132   GtkWidgetClass *widget_class;
 133   GtkContainerClass *container_class;
 134
 135   gobject_class = (GObjectClass *) class;
 136   object_class = (GtkObjectClass *) class;
 137   widget_class = (GtkWidgetClass *) class;
 138   container_class = (GtkContainerClass *) class;
 139
 140   parent_class = g_type_class_peek_parent (class);
 141
 142   gobject_class->set_property = gtk_statusbar_set_property;
 143   gobject_class->get_property = gtk_statusbar_get_property;
 144
 145   object_class->destroy = gtk_statusbar_destroy;
 146
 147   widget_class->realize = gtk_statusbar_realize;
 148   widget_class->unrealize = gtk_statusbar_unrealize;
 149   widget_class->map = gtk_statusbar_map;
 150   widget_class->unmap = gtk_statusbar_unmap;
 151
 152   widget_class->button_press_event = gtk_statusbar_button_press;
 153   widget_class->expose_event = gtk_statusbar_expose_event;
 154
 155   widget_class->size_request = gtk_statusbar_size_request;
 156   widget_class->size_allocate = gtk_statusbar_size_allocate;
 157
 158   widget_class->direction_changed = gtk_statusbar_direction_changed;
 159
 160   class->messages_mem_chunk = g_mem_chunk_new ("GtkStatusbar messages mem chunk",
 161                                                sizeof (GtkStatusbarMsg),
 162                                                sizeof (GtkStatusbarMsg) * 64,
 163                                                G_ALLOC_AND_FREE);
 164
 165   class->text_pushed = gtk_statusbar_update;
 166   class->text_popped = gtk_statusbar_update;
 167
 168   /**
 169    * GtkStatusbar:has-resize-grip:
 170    *
 171    * Whether the statusbar has a grip for resizing the toplevel window.
 172    *
 173    * Since: 2.4
 174    */
 175   g_object_class_install_property (gobject_class,
 176                                    PROP_HAS_RESIZE_GRIP,
 177                                    g_param_spec_boolean ("has-resize-grip",
 178                                                          P_("Has Resize Grip"),
 179                                                          P_("Whether the statusbar has a grip for resizing the toplevel"),
 180                                                          TRUE,
 181                                                          GTK_PARAM_READWRITE));
 182   statusbar_signals[SIGNAL_TEXT_PUSHED] =
 183     g_signal_new ("text_pushed",
 184                   G_OBJECT_CLASS_TYPE (class),
 185                   G_SIGNAL_RUN_LAST,
 186                   G_STRUCT_OFFSET (GtkStatusbarClass, text_pushed),
 187                   NULL, NULL,
 188                   _gtk_marshal_VOID__UINT_STRING,
 189                   G_TYPE_NONE, 2,
 190                   G_TYPE_UINT,
 191                   G_TYPE_STRING);
 192   statusbar_signals[SIGNAL_TEXT_POPPED] =
 193     g_signal_new ("text_popped",
 194                   G_OBJECT_CLASS_TYPE (class),
 195                   G_SIGNAL_RUN_LAST,
 196                   G_STRUCT_OFFSET (GtkStatusbarClass, text_popped),
 197                   NULL, NULL,
 198                   _gtk_marshal_VOID__UINT_STRING,
 199                   G_TYPE_NONE, 2,
 200                   G_TYPE_UINT,
 201                   G_TYPE_STRING);
 202
 203   gtk_widget_class_install_style_property (widget_class,
 204                                            g_param_spec_enum ("shadow-type",
 205                                                               P_("Shadow type"),
 206                                                               P_("Style of bevel around the statusbar text"),
 207                                                               GTK_TYPE_SHADOW_TYPE,
 208                                                               GTK_SHADOW_IN,
 209                                                               GTK_PARAM_READABLE));
 210 }
 211
 212 static void
 213 gtk_statusbar_init (GtkStatusbar *statusbar)
 214 {
 215   GtkBox *box;
 216   GtkShadowType shadow_type;
 217
 218   box = GTK_BOX (statusbar);
 219
 220   box->spacing = 2;
 221   box->homogeneous = FALSE;
 222
 223   statusbar->has_resize_grip = TRUE;
 224
 225   gtk_widget_style_get (GTK_WIDGET (statusbar), "shadow-type", &shadow_type, NULL);
 226
 227   statusbar->frame = gtk_frame_new (NULL);
 228   gtk_frame_set_shadow_type (GTK_FRAME (statusbar->frame), shadow_type);
 229   gtk_box_pack_start (box, statusbar->frame, TRUE, TRUE, 0);
 230   gtk_widget_show (statusbar->frame);
 231
 232   statusbar->label = gtk_label_new ("");
 233   gtk_label_set_single_line_mode (GTK_LABEL (statusbar->label), TRUE);
 234   gtk_misc_set_alignment (GTK_MISC (statusbar->label), 0.0, 0.5);
 235   g_signal_connect (statusbar->label, "notify::selectable",
 236                     G_CALLBACK (label_selectable_changed), statusbar);
 237   gtk_label_set_ellipsize (GTK_LABEL (statusbar->label), PANGO_ELLIPSIZE_END);
 238   gtk_container_add (GTK_CONTAINER (statusbar->frame), statusbar->label);
 239   gtk_widget_show (statusbar->label);
 240
 241   statusbar->seq_context_id = 1;
 242   statusbar->seq_message_id = 1;
 243   statusbar->messages = NULL;
 244   statusbar->keys = NULL;
 245 }
 246
 247 GtkWidget*
 248 gtk_statusbar_new (void)
 249 {
 250   return g_object_new (GTK_TYPE_STATUSBAR, NULL);
 251 }
 252
 253 static void
 254 gtk_statusbar_update (GtkStatusbar *statusbar,
 255                       guint         context_id,
 256                       const gchar  *text)
 257 {
 258   g_return_if_fail (GTK_IS_STATUSBAR (statusbar));
 259
 260   if (!text)
 261     text = "";
 262
 263   gtk_label_set_text (GTK_LABEL (statusbar->label), text);
 264 }
 265
 266 guint
 267 gtk_statusbar_get_context_id (GtkStatusbar *statusbar,
 268                               const gchar  *context_description)
 269 {
 270   gchar *string;
 271   guint *id;
 272
 273   g_return_val_if_fail (GTK_IS_STATUSBAR (statusbar), 0);
 274   g_return_val_if_fail (context_description != NULL, 0);
 275
 276   /* we need to preserve namespaces on object datas */
 277   string = g_strconcat ("gtk-status-bar-context:", context_description, NULL);
 278
 279   id = g_object_get_data (G_OBJECT (statusbar), string);
 280   if (!id)
 281     {
 282       id = g_new (guint, 1);
 283       *id = statusbar->seq_context_id++;
 284       g_object_set_data_full (G_OBJECT (statusbar), string, id, g_free);
 285       statusbar->keys = g_slist_prepend (statusbar->keys, string);
 286     }
 287   else
 288     g_free (string);
 289
 290   return *id;
 291 }
 292
 293 guint
 294 gtk_statusbar_push (GtkStatusbar *statusbar,
 295                     guint         context_id,
 296                     const gchar  *text)
 297 {
 298   GtkStatusbarMsg *msg;
 299   GtkStatusbarClass *class;
 300
 301   g_return_val_if_fail (GTK_IS_STATUSBAR (statusbar), 0);
 302   g_return_val_if_fail (text != NULL, 0);
 303
 304   class = GTK_STATUSBAR_GET_CLASS (statusbar);
 305   msg = g_chunk_new (GtkStatusbarMsg, class->messages_mem_chunk);
 306   msg->text = g_strdup (text);
 307   msg->context_id = context_id;
 308   msg->message_id = statusbar->seq_message_id++;
 309
 310   statusbar->messages = g_slist_prepend (statusbar->messages, msg);
 311
 312   g_signal_emit (statusbar,
 313                  statusbar_signals[SIGNAL_TEXT_PUSHED],
 314                  0,
 315                  msg->context_id,
 316                  msg->text);
 317
 318   return msg->message_id;
 319 }
 320
 321 void
 322 gtk_statusbar_pop (GtkStatusbar *statusbar,
 323                    guint         context_id)
 324 {
 325   GtkStatusbarMsg *msg;
 326
 327   g_return_if_fail (GTK_IS_STATUSBAR (statusbar));
 328
 329   if (statusbar->messages)
 330     {
 331       GSList *list;
 332
 333       for (list = statusbar->messages; list; list = list->next)
 334         {
 335           msg = list->data;
 336
 337           if (msg->context_id == context_id)
 338             {
 339               GtkStatusbarClass *class;
 340
 341               class = GTK_STATUSBAR_GET_CLASS (statusbar);
 342
 343               statusbar->messages = g_slist_remove_link (statusbar->messages,
 344                                                          list);
 345               g_free (msg->text);
 346               g_mem_chunk_free (class->messages_mem_chunk, msg);
 347               g_slist_free_1 (list);
 348               break;
 349             }
 350         }
 351     }
 352
 353   msg = statusbar->messages ? statusbar->messages->data : NULL;
 354
 355   g_signal_emit (statusbar,
 356                  statusbar_signals[SIGNAL_TEXT_POPPED],
 357                  0,
 358                  (guint) (msg ? msg->context_id : 0),
 359                  msg ? msg->text : NULL);
 360 }
 361
 362 void
 363 gtk_statusbar_remove (GtkStatusbar *statusbar,
 364                       guint        context_id,
 365                       guint        message_id)
 366 {
 367   GtkStatusbarMsg *msg;
 368
 369   g_return_if_fail (GTK_IS_STATUSBAR (statusbar));
 370   g_return_if_fail (message_id > 0);
 371
 372   msg = statusbar->messages ? statusbar->messages->data : NULL;
 373   if (msg)
 374     {
 375       GSList *list;
 376
 377       /* care about signal emission if the topmost item is removed */
 378       if (msg->context_id == context_id &&
 379           msg->message_id == message_id)
 380         {
 381           gtk_statusbar_pop (statusbar, context_id);
 382           return;
 383         }
 384
 385       for (list = statusbar->messages; list; list = list->next)
 386         {
 387           msg = list->data;
 388
 389           if (msg->context_id == context_id &&
 390               msg->message_id == message_id)
 391             {
 392               GtkStatusbarClass *class;
 393
 394               class = GTK_STATUSBAR_GET_CLASS (statusbar);
 395               statusbar->messages = g_slist_remove_link (statusbar->messages, list);
 396               g_free (msg->text);
 397               g_mem_chunk_free (class->messages_mem_chunk, msg);
 398               g_slist_free_1 (list);
 399
 400               break;
 401             }
 402         }
 403     }
 404 }
 405
 406 void
 407 gtk_statusbar_set_has_resize_grip (GtkStatusbar *statusbar,
 408                                    gboolean      setting)
 409 {
 410   g_return_if_fail (GTK_IS_STATUSBAR (statusbar));
 411
 412   setting = setting != FALSE;
 413
 414   if (setting != statusbar->has_resize_grip)
 415     {
 416       statusbar->has_resize_grip = setting;
 417       gtk_widget_queue_resize (statusbar->label);
 418       gtk_widget_queue_draw (GTK_WIDGET (statusbar));
 419
 420       if (GTK_WIDGET_REALIZED (statusbar))
 421         {
 422           if (statusbar->has_resize_grip && statusbar->grip_window == NULL)
 423             {
 424               gtk_statusbar_create_window (statusbar);
 425               if (GTK_WIDGET_MAPPED (statusbar))
 426                 gdk_window_show (statusbar->grip_window);
 427             }
 428           else if (!statusbar->has_resize_grip && statusbar->grip_window != NULL)
 429             gtk_statusbar_destroy_window (statusbar);
 430         }
 431
 432       g_object_notify (G_OBJECT (statusbar), "has-resize-grip");
 433     }
 434 }
 435
 436 gboolean
 437 gtk_statusbar_get_has_resize_grip (GtkStatusbar *statusbar)
 438 {
 439   g_return_val_if_fail (GTK_IS_STATUSBAR (statusbar), FALSE);
 440
 441   return statusbar->has_resize_grip;
 442 }
 443
 444 static void
 445 gtk_statusbar_destroy (GtkObject *object)
 446 {
 447   GtkStatusbar *statusbar;
 448   GtkStatusbarClass *class;
 449   GSList *list;
 450
 451   g_return_if_fail (GTK_IS_STATUSBAR (object));
 452
 453   statusbar = GTK_STATUSBAR (object);
 454   class = GTK_STATUSBAR_GET_CLASS (statusbar);
 455
 456   for (list = statusbar->messages; list; list = list->next)
 457     {
 458       GtkStatusbarMsg *msg;
 459
 460       msg = list->data;
 461       g_free (msg->text);
 462       g_mem_chunk_free (class->messages_mem_chunk, msg);
 463     }
 464   g_slist_free (statusbar->messages);
 465   statusbar->messages = NULL;
 466
 467   for (list = statusbar->keys; list; list = list->next)
 468     g_free (list->data);
 469   g_slist_free (statusbar->keys);
 470   statusbar->keys = NULL;
 471
 472   GTK_OBJECT_CLASS (parent_class)->destroy (object);
 473 }
 474
 475 static void
 476 gtk_statusbar_set_property (GObject      *object,
 477                             guint         prop_id,
 478                             const GValue *value,
 479                             GParamSpec   *pspec)
 480 {
 481   GtkStatusbar *statusbar = GTK_STATUSBAR (object);
 482
 483   switch (prop_id)
 484     {
 485     case PROP_HAS_RESIZE_GRIP:
 486       gtk_statusbar_set_has_resize_grip (statusbar, g_value_get_boolean (value));
 487       break;
 488     default:
 489       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 490       break;
 491     }
 492 }
 493
 494 static void
 495 gtk_statusbar_get_property (GObject    *object,
 496                             guint       prop_id,
 497                             GValue     *value,
 498                             GParamSpec *pspec)
 499 {
 500   GtkStatusbar *statusbar = GTK_STATUSBAR (object);
 501
 502   switch (prop_id)
 503     {
 504     case PROP_HAS_RESIZE_GRIP:
 505       g_value_set_boolean (value, statusbar->has_resize_grip);
 506       break;
 507     default:
 508       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 509       break;
 510     }
 511 }
 512
 513 static GdkWindowEdge
 514 get_grip_edge (GtkStatusbar *statusbar)
 515 {
 516   GtkWidget *widget = GTK_WIDGET (statusbar);
 517
 518   if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
 519     return GDK_WINDOW_EDGE_SOUTH_EAST;
 520   else
 521     return GDK_WINDOW_EDGE_SOUTH_WEST;
 522 }
 523
 524 static void
 525 get_grip_rect (GtkStatusbar *statusbar,
 526                GdkRectangle *rect)
 527 {
 528   GtkWidget *widget;
 529   gint w, h;
 530
 531   widget = GTK_WIDGET (statusbar);
 532
 533   /* These are in effect the max/default size of the grip. */
 534   w = 18;
 535   h = 18;
 536
 537   if (w > widget->allocation.width)
 538     w = widget->allocation.width;
 539
 540   if (h > widget->allocation.height - widget->style->ythickness)
 541     h = widget->allocation.height - widget->style->ythickness;
 542
 543   rect->width = w;
 544   rect->height = h;
 545   rect->y = widget->allocation.y + widget->allocation.height - h;
 546
 547   if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
 548     rect->x = widget->allocation.x + widget->allocation.width - w;
 549   else
 550     rect->x = widget->allocation.x + widget->style->xthickness;
 551 }
 552
 553 static void
 554 set_grip_cursor (GtkStatusbar *statusbar)
 555 {
 556   if (statusbar->has_resize_grip)
 557     {
 558       GtkWidget *widget = GTK_WIDGET (statusbar);
 559       GdkDisplay *display = gtk_widget_get_display (widget);
 560       GdkCursorType cursor_type;
 561       GdkCursor *cursor;
 562
 563       if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
 564         cursor_type = GDK_BOTTOM_RIGHT_CORNER;
 565       else
 566         cursor_type = GDK_BOTTOM_LEFT_CORNER;
 567
 568       cursor = gdk_cursor_new_for_display (display, cursor_type);
 569       gdk_window_set_cursor (statusbar->grip_window, cursor);
 570       gdk_cursor_unref (cursor);
 571     }
 572 }
 573
 574 static void
 575 gtk_statusbar_create_window (GtkStatusbar *statusbar)
 576 {
 577   GtkWidget *widget;
 578   GdkWindowAttr attributes;
 579   gint attributes_mask;
 580   GdkRectangle rect;
 581
 582   g_return_if_fail (GTK_WIDGET_REALIZED (statusbar));
 583   g_return_if_fail (statusbar->has_resize_grip);
 584
 585   widget = GTK_WIDGET (statusbar);
 586
 587   get_grip_rect (statusbar, &rect);
 588
 589   attributes.x = rect.x;
 590   attributes.y = rect.y;
 591   attributes.width = rect.width;
 592   attributes.height = rect.height;
 593   attributes.window_type = GDK_WINDOW_CHILD;
 594   attributes.wclass = GDK_INPUT_ONLY;
 595   attributes.event_mask = gtk_widget_get_events (widget) |
 596     GDK_BUTTON_PRESS_MASK;
 597
 598   attributes_mask = GDK_WA_X | GDK_WA_Y;
 599
 600   statusbar->grip_window = gdk_window_new (widget->window,
 601                                            &attributes, attributes_mask);
 602
 603   gdk_window_set_user_data (statusbar->grip_window, widget);
 604
 605   set_grip_cursor (statusbar);
 606 }
 607
 608 static void
 609 gtk_statusbar_direction_changed (GtkWidget        *widget,
 610                                  GtkTextDirection  prev_dir)
 611 {
 612   GtkStatusbar *statusbar = GTK_STATUSBAR (widget);
 613
 614   set_grip_cursor (statusbar);
 615 }
 616
 617 static void
 618 gtk_statusbar_destroy_window (GtkStatusbar *statusbar)
 619 {
 620   gdk_window_set_user_data (statusbar->grip_window, NULL);
 621   gdk_window_destroy (statusbar->grip_window);
 622   statusbar->grip_window = NULL;
 623 }
 624
 625 static void
 626 gtk_statusbar_realize (GtkWidget *widget)
 627 {
 628   GtkStatusbar *statusbar;
 629
 630   statusbar = GTK_STATUSBAR (widget);
 631
 632   (* GTK_WIDGET_CLASS (parent_class)->realize) (widget);
 633
 634   if (statusbar->has_resize_grip)
 635     gtk_statusbar_create_window (statusbar);
 636 }
 637
 638 static void
 639 gtk_statusbar_unrealize (GtkWidget *widget)
 640 {
 641   GtkStatusbar *statusbar;
 642
 643   statusbar = GTK_STATUSBAR (widget);
 644
 645   if (statusbar->grip_window)
 646     gtk_statusbar_destroy_window (statusbar);
 647
 648   (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
 649 }
 650
 651 static void
 652 gtk_statusbar_map (GtkWidget *widget)
 653 {
 654   GtkStatusbar *statusbar;
 655
 656   statusbar = GTK_STATUSBAR (widget);
 657
 658   (* GTK_WIDGET_CLASS (parent_class)->map) (widget);
 659
 660   if (statusbar->grip_window)
 661     gdk_window_show (statusbar->grip_window);
 662 }
 663
 664 static void
 665 gtk_statusbar_unmap (GtkWidget *widget)
 666 {
 667   GtkStatusbar *statusbar;
 668
 669   statusbar = GTK_STATUSBAR (widget);
 670
 671   if (statusbar->grip_window)
 672     gdk_window_hide (statusbar->grip_window);
 673
 674   (* GTK_WIDGET_CLASS (parent_class)->unmap) (widget);
 675 }
 676
 677 static gboolean
 678 gtk_statusbar_button_press (GtkWidget      *widget,
 679                             GdkEventButton *event)
 680 {
 681   GtkStatusbar *statusbar;
 682   GtkWidget *ancestor;
 683   GdkWindowEdge edge;
 684
 685   statusbar = GTK_STATUSBAR (widget);
 686
 687   if (!statusbar->has_resize_grip ||
 688       event->type != GDK_BUTTON_PRESS ||
 689       event->window != statusbar->grip_window)
 690     return FALSE;
 691
 692   ancestor = gtk_widget_get_toplevel (widget);
 693
 694   if (!GTK_IS_WINDOW (ancestor))
 695     return FALSE;
 696
 697   edge = get_grip_edge (statusbar);
 698
 699   if (event->button == 1)
 700     gtk_window_begin_resize_drag (GTK_WINDOW (ancestor),
 701                                   edge,
 702                                   event->button,
 703                                   event->x_root, event->y_root,
 704                                   event->time);
 705   else if (event->button == 2)
 706     gtk_window_begin_move_drag (GTK_WINDOW (ancestor),
 707                                 event->button,
 708                                 event->x_root, event->y_root,
 709                                 event->time);
 710   else
 711     return FALSE;
 712
 713   return TRUE;
 714 }
 715
 716 static gboolean
 717 gtk_statusbar_expose_event (GtkWidget      *widget,
 718                             GdkEventExpose *event)
 719 {
 720   GtkStatusbar *statusbar;
 721   GdkRectangle rect;
 722
 723   statusbar = GTK_STATUSBAR (widget);
 724
 725   GTK_WIDGET_CLASS (parent_class)->expose_event (widget, event);
 726
 727   if (statusbar->has_resize_grip)
 728     {
 729       GdkWindowEdge edge;
 730
 731       edge = get_grip_edge (statusbar);
 732
 733       get_grip_rect (statusbar, &rect);
 734
 735       gtk_paint_resize_grip (widget->style,
 736                              widget->window,
 737                              GTK_WIDGET_STATE (widget),
 738                              NULL,
 739                              widget,
 740                              "statusbar",
 741                              edge,
 742                              rect.x, rect.y,
 743                              /* don't draw grip over the frame, though you
 744                               * can click on the frame.
 745                               */
 746                              rect.width - widget->style->xthickness,
 747                              rect.height - widget->style->ythickness);
 748     }
 749
 750   return FALSE;
 751 }
 752
 753 static void
 754 gtk_statusbar_size_request   (GtkWidget      *widget,
 755                               GtkRequisition *requisition)
 756 {
 757   GtkStatusbar *statusbar;
 758   GtkShadowType shadow_type;
 759
 760   statusbar = GTK_STATUSBAR (widget);
 761
 762   gtk_widget_style_get (GTK_WIDGET (statusbar), "shadow-type", &shadow_type, NULL);
 763   gtk_frame_set_shadow_type (GTK_FRAME (statusbar->frame), shadow_type);
 764
 765   GTK_WIDGET_CLASS (parent_class)->size_request (widget, requisition);
 766 }
 767
 768 /* look for extra children between the frame containing
 769  * the label and where we want to draw the resize grip
 770  */
 771 static gboolean
 772 has_extra_children (GtkStatusbar *statusbar)
 773 {
 774   GList *l;
 775   GtkBoxChild *child, *frame;
 776
 777   frame = NULL;
 778   for (l = GTK_BOX (statusbar)->children; l; l = l->next)
 779     {
 780       frame = l->data;
 781
 782       if (frame->widget == statusbar->frame)
 783         break;
 784     }
 785
 786   for (l = l->next; l; l = l->next)
 787     {
 788       child = l->data;
 789
 790       if (!GTK_WIDGET_VISIBLE (child->widget))
 791         continue;
 792
 793       if (frame->pack == GTK_PACK_START || child->pack == GTK_PACK_END)
 794         return TRUE;
 795     }
 796
 797   return FALSE;
 798 }
 799
 800 static void
 801 gtk_statusbar_size_allocate  (GtkWidget     *widget,
 802                               GtkAllocation *allocation)
 803 {
 804   GtkStatusbar *statusbar = GTK_STATUSBAR (widget);
 805   gboolean extra_children = FALSE;
 806   GdkRectangle rect;
 807
 808   if (statusbar->has_resize_grip)
 809     {
 810       widget->allocation = *allocation;
 811       get_grip_rect (statusbar, &rect);
 812
 813       extra_children = has_extra_children (statusbar);
 814
 815       /* If there are extra children, we don't want them to occupy
 816        * the space where we draw the resize grip, so we temporarily
 817        * shrink the allocation.
 818        * If there are no extra children, we want the frame to get
 819        * the full allocation, and we fix up the allocation of the
 820        * label afterwards to make room for the grip.
 821        */
 822       if (extra_children)
 823         {
 824           allocation->width -= rect.width;
 825           if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 826             allocation->x += rect.width;
 827         }
 828     }
 829
 830   /* chain up normally */
 831   GTK_WIDGET_CLASS (parent_class)->size_allocate (widget, allocation);
 832
 833   if (statusbar->has_resize_grip)
 834     {
 835       if (statusbar->grip_window)
 836         {
 837           gdk_window_raise (statusbar->grip_window);
 838           gdk_window_move_resize (statusbar->grip_window,
 839                                   rect.x, rect.y,
 840                                   rect.width, rect.height);
 841         }
 842
 843       if (extra_children)
 844         {
 845           allocation->width += rect.width;
 846           if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 847             allocation->x -= rect.width;
 848
 849           widget->allocation = *allocation;
 850         }
 851       else
 852         {
 853           if (statusbar->label->allocation.width + rect.width > statusbar->frame->allocation.width)
 854             {
 855               /* shrink the label to make room for the grip */
 856               *allocation = statusbar->label->allocation;
 857               allocation->width -= rect.width;
 858               if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 859                 allocation->x += rect.width;
 860
 861               gtk_widget_size_allocate (statusbar->label, allocation);
 862             }
 863         }
 864     }
 865 }
 866
 867 static void
 868 label_selectable_changed (GtkWidget  *label,
 869                           GParamSpec *pspec,
 870                           gpointer    data)
 871 {
 872   GtkStatusbar *statusbar = GTK_STATUSBAR (data);
 873
 874   if (statusbar &&
 875       statusbar->has_resize_grip && statusbar->grip_window)
 876     gdk_window_raise (statusbar->grip_window);
 877 }
 878
 879 #define __GTK_STATUSBAR_C__
 880 #include "gtkaliasdef.c"