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

   1 /* GTK - The GIMP Toolkit
   2  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
   3  * GtkToolbar copyright (C) Federico Mena
   4  *
   5  * Copyright (C) 2002 Anders Carlsson <andersca@gnome.org>
   6  * Copyright (C) 2002 James Henstridge <james@daa.com.au>
   7  * Copyright (C) 2003, 2004 Soeren Sandmann <sandmann@daimi.au.dk>
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the
  21  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  22  * Boston, MA 02111-1307, USA.
  23  */
  24
  25 /*
  26  * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
  27  * file for a list of people on the GTK+ Team.  See the ChangeLog
  28  * files for a list of changes.  These files are distributed with
  29  * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  30  */
  31
  32
  33 #include "config.h"
  34
  35 #include <math.h>
  36 #include <string.h>
  37
  38 #include "gtktoolbar.h"
  39
  40 #include "gtkarrow.h"
  41 #include "gtkbindings.h"
  42 #include "gtkimage.h"
  43 #include "gtklabel.h"
  44 #include "gtkmainprivate.h"
  45 #include "gtkmarshalers.h"
  46 #include "gtkmenu.h"
  47 #include "gtkorientable.h"
  48 #include "gtkradiobutton.h"
  49 #include "gtkradiotoolbutton.h"
  50 #include "gtkseparatormenuitem.h"
  51 #include "gtkseparatortoolitem.h"
  52 #include "gtkstock.h"
  53 #include "gtktoolshell.h"
  54 #include "gtkbox.h"
  55 #include "gtkprivate.h"
  56 #include "gtkintl.h"
  57 #include "gtktypebuiltins.h"
  58
  59
  60 /**
  61  * SECTION:gtktoolbar
  62  * @Short_description: Create bars of buttons and other widgets
  63  * @Title: GtkToolbar
  64  * @See_also: #GtkToolItem
  65  *
  66  * A toolbar is created with a call to gtk_toolbar_new().
  67  *
  68  * A toolbar can contain instances of a subclass of #GtkToolItem. To add
  69  * a #GtkToolItem to the a toolbar, use gtk_toolbar_insert(). To remove
  70  * an item from the toolbar use gtk_container_remove(). To add a button
  71  * to the toolbar, add an instance of #GtkToolButton.
  72  *
  73  * Toolbar items can be visually grouped by adding instances of
  74  * #GtkSeparatorToolItem to the toolbar. If the GtkToolbar child property
  75  * "expand" is #TRUE and the property #GtkSeparatorToolItem:draw is set to
  76  * #FALSE, the effect is to force all following items to the end of the toolbar.
  77  *
  78  * Creating a context menu for the toolbar can be done by connecting to
  79  * the #GtkToolbar::popup-context-menu signal.
  80  */
  81
  82
  83 typedef struct _ToolbarContent ToolbarContent;
  84
  85 #define DEFAULT_IPADDING    0
  86
  87 #define DEFAULT_SPACE_SIZE  12
  88 #define DEFAULT_SPACE_STYLE GTK_TOOLBAR_SPACE_LINE
  89 #define SPACE_LINE_DIVISION 10.0
  90 #define SPACE_LINE_START    2.0
  91 #define SPACE_LINE_END      8.0
  92
  93 #define DEFAULT_ICON_SIZE GTK_ICON_SIZE_LARGE_TOOLBAR
  94 #define DEFAULT_TOOLBAR_STYLE GTK_TOOLBAR_BOTH
  95 #define DEFAULT_ANIMATION_STATE TRUE
  96
  97 #define MAX_HOMOGENEOUS_N_CHARS 13 /* Items that are wider than this do not participate
  98                                     * in the homogeneous game. In units of
  99                                     * pango_font_get_estimated_char_width().
 100                                     */
 101 #define SLIDE_SPEED 600.0          /* How fast the items slide, in pixels per second */
 102 #define ACCEL_THRESHOLD 0.18       /* After how much time in seconds will items start speeding up */
 103
 104
 105 struct _GtkToolbarPrivate
 106 {
 107   GtkMenu         *menu;
 108   GtkSettings     *settings;
 109
 110   GtkIconSize      icon_size;
 111   GtkToolbarStyle  style;
 112
 113   GtkToolItem     *highlight_tool_item;
 114   GtkWidget       *arrow;
 115   GtkWidget       *arrow_button;
 116
 117   GdkWindow       *event_window;
 118
 119   GList           *content;
 120
 121   GTimer          *timer;
 122
 123   GtkWidgetPath   *sibling_path;
 124
 125   gulong           settings_connection;
 126
 127   gint             idle_id;
 128   gint             button_maxw;         /* maximum width of homogeneous children */
 129   gint             button_maxh;         /* maximum height of homogeneous children */
 130   gint             max_homogeneous_pixels;
 131   gint             num_children;
 132
 133   GtkOrientation   orientation;
 134
 135   guint            animation : 1;
 136   guint            icon_size_set : 1;
 137   guint            is_sliding : 1;
 138   guint            need_rebuild : 1;  /* whether the overflow menu should be regenerated */
 139   guint            need_sync : 1;
 140   guint            show_arrow : 1;
 141   guint            style_set     : 1;
 142 };
 143
 144 /* Properties */
 145 enum {
 146   PROP_0,
 147   PROP_ORIENTATION,
 148   PROP_TOOLBAR_STYLE,
 149   PROP_SHOW_ARROW,
 150   PROP_TOOLTIPS,
 151   PROP_ICON_SIZE,
 152   PROP_ICON_SIZE_SET
 153 };
 154
 155 /* Child properties */
 156 enum {
 157   CHILD_PROP_0,
 158   CHILD_PROP_EXPAND,
 159   CHILD_PROP_HOMOGENEOUS
 160 };
 161
 162 /* Signals */
 163 enum {
 164   ORIENTATION_CHANGED,
 165   STYLE_CHANGED,
 166   POPUP_CONTEXT_MENU,
 167   FOCUS_HOME_OR_END,
 168   LAST_SIGNAL
 169 };
 170
 171 typedef enum {
 172   NOT_ALLOCATED,
 173   NORMAL,
 174   HIDDEN,
 175   OVERFLOWN
 176 } ItemState;
 177
 178
 179 static void       gtk_toolbar_set_property         (GObject             *object,
 180                                                     guint                prop_id,
 181                                                     const GValue        *value,
 182                                                     GParamSpec          *pspec);
 183 static void       gtk_toolbar_get_property         (GObject             *object,
 184                                                     guint                prop_id,
 185                                                     GValue              *value,
 186                                                     GParamSpec          *pspec);
 187 static gint       gtk_toolbar_draw                 (GtkWidget           *widget,
 188                                                     cairo_t             *cr);
 189 static void       gtk_toolbar_realize              (GtkWidget           *widget);
 190 static void       gtk_toolbar_unrealize            (GtkWidget           *widget);
 191 static void       gtk_toolbar_get_preferred_width  (GtkWidget           *widget,
 192                                                     gint                *minimum,
 193                                                     gint                *natural);
 194 static void       gtk_toolbar_get_preferred_height (GtkWidget           *widget,
 195                                                     gint                *minimum,
 196                                                     gint                *natural);
 197
 198 static void       gtk_toolbar_size_allocate        (GtkWidget           *widget,
 199                                                     GtkAllocation       *allocation);
 200 static void       gtk_toolbar_style_updated        (GtkWidget           *widget);
 201 static gboolean   gtk_toolbar_focus                (GtkWidget           *widget,
 202                                                     GtkDirectionType     dir);
 203 static void       gtk_toolbar_move_focus           (GtkWidget           *widget,
 204                                                     GtkDirectionType     dir);
 205 static void       gtk_toolbar_screen_changed       (GtkWidget           *widget,
 206                                                     GdkScreen           *previous_screen);
 207 static void       gtk_toolbar_map                  (GtkWidget           *widget);
 208 static void       gtk_toolbar_unmap                (GtkWidget           *widget);
 209 static void       gtk_toolbar_set_child_property   (GtkContainer        *container,
 210                                                     GtkWidget           *child,
 211                                                     guint                property_id,
 212                                                     const GValue        *value,
 213                                                     GParamSpec          *pspec);
 214 static void       gtk_toolbar_get_child_property   (GtkContainer        *container,
 215                                                     GtkWidget           *child,
 216                                                     guint                property_id,
 217                                                     GValue              *value,
 218                                                     GParamSpec          *pspec);
 219 static void       gtk_toolbar_finalize             (GObject             *object);
 220 static void       gtk_toolbar_dispose              (GObject             *object);
 221 static void       gtk_toolbar_show_all             (GtkWidget           *widget);
 222 static void       gtk_toolbar_add                  (GtkContainer        *container,
 223                                                     GtkWidget           *widget);
 224 static void       gtk_toolbar_remove               (GtkContainer        *container,
 225                                                     GtkWidget           *widget);
 226 static void       gtk_toolbar_forall               (GtkContainer        *container,
 227                                                     gboolean             include_internals,
 228                                                     GtkCallback          callback,
 229                                                     gpointer             callback_data);
 230 static GType      gtk_toolbar_child_type           (GtkContainer        *container);
 231 static GtkWidgetPath * gtk_toolbar_get_path_for_child
 232                                                   (GtkContainer        *container,
 233                                                    GtkWidget           *child);
 234 static void       gtk_toolbar_invalidate_order    (GtkToolbar           *toolbar);
 235
 236 static void       gtk_toolbar_orientation_changed  (GtkToolbar          *toolbar,
 237                                                     GtkOrientation       orientation);
 238 static void       gtk_toolbar_real_style_changed   (GtkToolbar          *toolbar,
 239                                                     GtkToolbarStyle      style);
 240 static gboolean   gtk_toolbar_focus_home_or_end    (GtkToolbar          *toolbar,
 241                                                     gboolean             focus_home);
 242 static gboolean   gtk_toolbar_button_press         (GtkWidget           *toolbar,
 243                                                     GdkEventButton      *event);
 244 static gboolean   gtk_toolbar_arrow_button_press   (GtkWidget           *button,
 245                                                     GdkEventButton      *event,
 246                                                     GtkToolbar          *toolbar);
 247 static void       gtk_toolbar_arrow_button_clicked (GtkWidget           *button,
 248                                                     GtkToolbar          *toolbar);
 249 static void       gtk_toolbar_update_button_relief (GtkToolbar          *toolbar);
 250 static gboolean   gtk_toolbar_popup_menu           (GtkWidget           *toolbar);
 251 static void       gtk_toolbar_reconfigured         (GtkToolbar          *toolbar);
 252
 253 static GtkReliefStyle       get_button_relief    (GtkToolbar *toolbar);
 254 static gint                 get_internal_padding (GtkToolbar *toolbar);
 255 static gint                 get_max_child_expand (GtkToolbar *toolbar);
 256 static GtkShadowType        get_shadow_type      (GtkToolbar *toolbar);
 257
 258 /* methods on ToolbarContent 'class' */
 259 static ToolbarContent *toolbar_content_new_tool_item        (GtkToolbar          *toolbar,
 260                                                              GtkToolItem         *item,
 261                                                              gboolean             is_placeholder,
 262                                                              gint                 pos);
 263 static void            toolbar_content_remove               (ToolbarContent      *content,
 264                                                              GtkToolbar          *toolbar);
 265 static void            toolbar_content_free                 (ToolbarContent      *content);
 266 static void            toolbar_content_draw                 (ToolbarContent      *content,
 267                                                              GtkContainer        *container,
 268                                                              cairo_t             *cr);
 269 static gboolean        toolbar_content_visible              (ToolbarContent      *content,
 270                                                              GtkToolbar          *toolbar);
 271 static void            toolbar_content_size_request         (ToolbarContent      *content,
 272                                                              GtkToolbar          *toolbar,
 273                                                              GtkRequisition      *requisition);
 274 static gboolean        toolbar_content_is_homogeneous       (ToolbarContent      *content,
 275                                                              GtkToolbar          *toolbar);
 276 static gboolean        toolbar_content_is_placeholder       (ToolbarContent      *content);
 277 static gboolean        toolbar_content_disappearing         (ToolbarContent      *content);
 278 static ItemState       toolbar_content_get_state            (ToolbarContent      *content);
 279 static gboolean        toolbar_content_child_visible        (ToolbarContent      *content);
 280 static void            toolbar_content_get_goal_allocation  (ToolbarContent      *content,
 281                                                              GtkAllocation       *allocation);
 282 static void            toolbar_content_get_allocation       (ToolbarContent      *content,
 283                                                              GtkAllocation       *allocation);
 284 static void            toolbar_content_set_start_allocation (ToolbarContent      *content,
 285                                                              GtkAllocation       *new_start_allocation);
 286 static void            toolbar_content_get_start_allocation (ToolbarContent      *content,
 287                                                              GtkAllocation       *start_allocation);
 288 static gboolean        toolbar_content_get_expand           (ToolbarContent      *content);
 289 static void            toolbar_content_set_goal_allocation  (ToolbarContent      *content,
 290                                                              GtkAllocation       *allocation);
 291 static void            toolbar_content_set_child_visible    (ToolbarContent      *content,
 292                                                              GtkToolbar          *toolbar,
 293                                                              gboolean             visible);
 294 static void            toolbar_content_size_allocate        (ToolbarContent      *content,
 295                                                              GtkAllocation       *allocation);
 296 static void            toolbar_content_set_state            (ToolbarContent      *content,
 297                                                              ItemState            new_state);
 298 static GtkWidget *     toolbar_content_get_widget           (ToolbarContent      *content);
 299 static void            toolbar_content_set_disappearing     (ToolbarContent      *content,
 300                                                              gboolean             disappearing);
 301 static void            toolbar_content_set_size_request     (ToolbarContent      *content,
 302                                                              gint                 width,
 303                                                              gint                 height);
 304 static void            toolbar_content_toolbar_reconfigured (ToolbarContent      *content,
 305                                                              GtkToolbar          *toolbar);
 306 static GtkWidget *     toolbar_content_retrieve_menu_item   (ToolbarContent      *content);
 307 static gboolean        toolbar_content_has_proxy_menu_item  (ToolbarContent      *content);
 308 static gboolean        toolbar_content_is_separator         (ToolbarContent      *content);
 309 static void            toolbar_content_show_all             (ToolbarContent      *content);
 310 static void            toolbar_content_set_expand           (ToolbarContent      *content,
 311                                                              gboolean             expand);
 312
 313 static void            toolbar_tool_shell_iface_init        (GtkToolShellIface   *iface);
 314 static GtkIconSize     toolbar_get_icon_size                (GtkToolShell        *shell);
 315 static GtkOrientation  toolbar_get_orientation              (GtkToolShell        *shell);
 316 static GtkToolbarStyle toolbar_get_style                    (GtkToolShell        *shell);
 317 static GtkReliefStyle  toolbar_get_relief_style             (GtkToolShell        *shell);
 318 static void            toolbar_rebuild_menu                 (GtkToolShell        *shell);
 319
 320
 321 G_DEFINE_TYPE_WITH_CODE (GtkToolbar, gtk_toolbar, GTK_TYPE_CONTAINER,
 322                          G_IMPLEMENT_INTERFACE (GTK_TYPE_TOOL_SHELL,
 323                                                 toolbar_tool_shell_iface_init)
 324                          G_IMPLEMENT_INTERFACE (GTK_TYPE_ORIENTABLE,
 325                                                 NULL))
 326
 327 static guint toolbar_signals[LAST_SIGNAL] = { 0 };
 328
 329
 330 static void
 331 add_arrow_bindings (GtkBindingSet   *binding_set,
 332                     guint            keysym,
 333                     GtkDirectionType dir)
 334 {
 335   guint keypad_keysym = keysym - GDK_KEY_Left + GDK_KEY_KP_Left;
 336
 337   gtk_binding_entry_add_signal (binding_set, keysym, 0,
 338                                 "move-focus", 1,
 339                                 GTK_TYPE_DIRECTION_TYPE, dir);
 340   gtk_binding_entry_add_signal (binding_set, keypad_keysym, 0,
 341                                 "move-focus", 1,
 342                                 GTK_TYPE_DIRECTION_TYPE, dir);
 343 }
 344
 345 static void
 346 add_ctrl_tab_bindings (GtkBindingSet    *binding_set,
 347                        GdkModifierType   modifiers,
 348                        GtkDirectionType  direction)
 349 {
 350   gtk_binding_entry_add_signal (binding_set,
 351                                 GDK_KEY_Tab, GDK_CONTROL_MASK | modifiers,
 352                                 "move-focus", 1,
 353                                 GTK_TYPE_DIRECTION_TYPE, direction);
 354   gtk_binding_entry_add_signal (binding_set,
 355                                 GDK_KEY_KP_Tab, GDK_CONTROL_MASK | modifiers,
 356                                 "move-focus", 1,
 357                                 GTK_TYPE_DIRECTION_TYPE, direction);
 358 }
 359
 360 static void
 361 gtk_toolbar_class_init (GtkToolbarClass *klass)
 362 {
 363   GObjectClass *gobject_class;
 364   GtkWidgetClass *widget_class;
 365   GtkContainerClass *container_class;
 366   GtkBindingSet *binding_set;
 367
 368   gobject_class = (GObjectClass *)klass;
 369   widget_class = (GtkWidgetClass *)klass;
 370   container_class = (GtkContainerClass *)klass;
 371
 372   gobject_class->set_property = gtk_toolbar_set_property;
 373   gobject_class->get_property = gtk_toolbar_get_property;
 374   gobject_class->finalize = gtk_toolbar_finalize;
 375   gobject_class->dispose = gtk_toolbar_dispose;
 376
 377   widget_class->button_press_event = gtk_toolbar_button_press;
 378   widget_class->draw = gtk_toolbar_draw;
 379   widget_class->get_preferred_width = gtk_toolbar_get_preferred_width;
 380   widget_class->get_preferred_height = gtk_toolbar_get_preferred_height;
 381   widget_class->size_allocate = gtk_toolbar_size_allocate;
 382   widget_class->style_updated = gtk_toolbar_style_updated;
 383   widget_class->focus = gtk_toolbar_focus;
 384
 385   gtk_widget_class_set_accessible_role (widget_class, ATK_ROLE_TOOL_BAR);
 386
 387   /* need to override the base class function via override_class_handler,
 388    * because the signal slot is not available in GtkWidgetClass
 389    */
 390   g_signal_override_class_handler ("move-focus",
 391                                    GTK_TYPE_TOOLBAR,
 392                                    G_CALLBACK (gtk_toolbar_move_focus));
 393
 394   widget_class->screen_changed = gtk_toolbar_screen_changed;
 395   widget_class->realize = gtk_toolbar_realize;
 396   widget_class->unrealize = gtk_toolbar_unrealize;
 397   widget_class->map = gtk_toolbar_map;
 398   widget_class->unmap = gtk_toolbar_unmap;
 399   widget_class->popup_menu = gtk_toolbar_popup_menu;
 400   widget_class->show_all = gtk_toolbar_show_all;
 401
 402   container_class->add    = gtk_toolbar_add;
 403   container_class->remove = gtk_toolbar_remove;
 404   container_class->forall = gtk_toolbar_forall;
 405   container_class->child_type = gtk_toolbar_child_type;
 406   container_class->get_child_property = gtk_toolbar_get_child_property;
 407   container_class->set_child_property = gtk_toolbar_set_child_property;
 408   container_class->get_path_for_child = gtk_toolbar_get_path_for_child;
 409
 410   klass->orientation_changed = gtk_toolbar_orientation_changed;
 411   klass->style_changed = gtk_toolbar_real_style_changed;
 412
 413   /**
 414    * GtkToolbar::orientation-changed:
 415    * @toolbar: the object which emitted the signal
 416    * @orientation: the new #GtkOrientation of the toolbar
 417    *
 418    * Emitted when the orientation of the toolbar changes.
 419    */
 420   toolbar_signals[ORIENTATION_CHANGED] =
 421     g_signal_new (I_("orientation-changed"),
 422                   G_OBJECT_CLASS_TYPE (klass),
 423                   G_SIGNAL_RUN_FIRST,
 424                   G_STRUCT_OFFSET (GtkToolbarClass, orientation_changed),
 425                   NULL, NULL,
 426                   g_cclosure_marshal_VOID__ENUM,
 427                   G_TYPE_NONE, 1,
 428                   GTK_TYPE_ORIENTATION);
 429   /**
 430    * GtkToolbar::style-changed:
 431    * @toolbar: The #GtkToolbar which emitted the signal
 432    * @style: the new #GtkToolbarStyle of the toolbar
 433    *
 434    * Emitted when the style of the toolbar changes.
 435    */
 436   toolbar_signals[STYLE_CHANGED] =
 437     g_signal_new (I_("style-changed"),
 438                   G_OBJECT_CLASS_TYPE (klass),
 439                   G_SIGNAL_RUN_FIRST,
 440                   G_STRUCT_OFFSET (GtkToolbarClass, style_changed),
 441                   NULL, NULL,
 442                   g_cclosure_marshal_VOID__ENUM,
 443                   G_TYPE_NONE, 1,
 444                   GTK_TYPE_TOOLBAR_STYLE);
 445   /**
 446    * GtkToolbar::popup-context-menu:
 447    * @toolbar: the #GtkToolbar which emitted the signal
 448    * @x: the x coordinate of the point where the menu should appear
 449    * @y: the y coordinate of the point where the menu should appear
 450    * @button: the mouse button the user pressed, or -1
 451    *
 452    * Emitted when the user right-clicks the toolbar or uses the
 453    * keybinding to display a popup menu.
 454    *
 455    * Application developers should handle this signal if they want
 456    * to display a context menu on the toolbar. The context-menu should
 457    * appear at the coordinates given by @x and @y. The mouse button
 458    * number is given by the @button parameter. If the menu was popped
 459    * up using the keybaord, @button is -1.
 460    *
 461    * Return value: return %TRUE if the signal was handled, %FALSE if not
 462    */
 463   toolbar_signals[POPUP_CONTEXT_MENU] =
 464     g_signal_new (I_("popup-context-menu"),
 465                   G_OBJECT_CLASS_TYPE (klass),
 466                   G_SIGNAL_RUN_LAST,
 467                   G_STRUCT_OFFSET (GtkToolbarClass, popup_context_menu),
 468                   _gtk_boolean_handled_accumulator, NULL,
 469                   _gtk_marshal_BOOLEAN__INT_INT_INT,
 470                   G_TYPE_BOOLEAN, 3,
 471                   G_TYPE_INT, G_TYPE_INT,
 472                   G_TYPE_INT);
 473
 474   /**
 475    * GtkToolbar::focus-home-or-end:
 476    * @toolbar: the #GtkToolbar which emitted the signal
 477    * @focus_home: %TRUE if the first item should be focused
 478    *
 479    * A keybinding signal used internally by GTK+. This signal can't
 480    * be used in application code
 481    *
 482    * Return value: %TRUE if the signal was handled, %FALSE if not
 483    */
 484   toolbar_signals[FOCUS_HOME_OR_END] =
 485     g_signal_new_class_handler (I_("focus-home-or-end"),
 486                                 G_OBJECT_CLASS_TYPE (klass),
 487                                 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 488                                 G_CALLBACK (gtk_toolbar_focus_home_or_end),
 489                                 NULL, NULL,
 490                                 _gtk_marshal_BOOLEAN__BOOLEAN,
 491                                 G_TYPE_BOOLEAN, 1,
 492                                 G_TYPE_BOOLEAN);
 493
 494   /* properties */
 495   g_object_class_override_property (gobject_class,
 496                                     PROP_ORIENTATION,
 497                                     "orientation");
 498
 499   g_object_class_install_property (gobject_class,
 500                                    PROP_TOOLBAR_STYLE,
 501                                    g_param_spec_enum ("toolbar-style",
 502                                                       P_("Toolbar Style"),
 503                                                       P_("How to draw the toolbar"),
 504                                                       GTK_TYPE_TOOLBAR_STYLE,
 505                                                       DEFAULT_TOOLBAR_STYLE,
 506                                                       GTK_PARAM_READWRITE));
 507   g_object_class_install_property (gobject_class,
 508                                    PROP_SHOW_ARROW,
 509                                    g_param_spec_boolean ("show-arrow",
 510                                                          P_("Show Arrow"),
 511                                                          P_("If an arrow should be shown if the toolbar doesn't fit"),
 512                                                          TRUE,
 513                                                          GTK_PARAM_READWRITE));
 514
 515   /**
 516    * GtkToolbar:icon-size:
 517    *
 518    * The size of the icons in a toolbar is normally determined by
 519    * the toolbar-icon-size setting. When this property is set, it
 520    * overrides the setting.
 521    *
 522    * This should only be used for special-purpose toolbars, normal
 523    * application toolbars should respect the user preferences for the
 524    * size of icons.
 525    *
 526    * Since: 2.10
 527    */
 528   g_object_class_install_property (gobject_class,
 529                                    PROP_ICON_SIZE,
 530                                    g_param_spec_int ("icon-size",
 531                                                      P_("Icon size"),
 532                                                      P_("Size of icons in this toolbar"),
 533                                                      0, G_MAXINT,
 534                                                      DEFAULT_ICON_SIZE,
 535                                                      GTK_PARAM_READWRITE));
 536
 537   /**
 538    * GtkToolbar:icon-size-set:
 539    *
 540    * Is %TRUE if the icon-size property has been set.
 541    *
 542    * Since: 2.10
 543    */
 544   g_object_class_install_property (gobject_class,
 545                                    PROP_ICON_SIZE_SET,
 546                                    g_param_spec_boolean ("icon-size-set",
 547                                                          P_("Icon size set"),
 548                                                          P_("Whether the icon-size property has been set"),
 549                                                          FALSE,
 550                                                          GTK_PARAM_READWRITE));
 551
 552   /* child properties */
 553   gtk_container_class_install_child_property (container_class,
 554                                               CHILD_PROP_EXPAND,
 555                                               g_param_spec_boolean ("expand",
 556                                                                     P_("Expand"),
 557                                                                     P_("Whether the item should receive extra space when the toolbar grows"),
 558                                                                     FALSE,
 559                                                                     GTK_PARAM_READWRITE));
 560
 561   gtk_container_class_install_child_property (container_class,
 562                                               CHILD_PROP_HOMOGENEOUS,
 563                                               g_param_spec_boolean ("homogeneous",
 564                                                                     P_("Homogeneous"),
 565                                                                     P_("Whether the item should be the same size as other homogeneous items"),
 566                                                                     FALSE,
 567                                                                     GTK_PARAM_READWRITE));
 568
 569   /* style properties */
 570   gtk_widget_class_install_style_property (widget_class,
 571                                            g_param_spec_int ("space-size",
 572                                                              P_("Spacer size"),
 573                                                              P_("Size of spacers"),
 574                                                              0,
 575                                                              G_MAXINT,
 576                                                              DEFAULT_SPACE_SIZE,
 577                                                              GTK_PARAM_READABLE));
 578
 579   gtk_widget_class_install_style_property (widget_class,
 580                                            g_param_spec_int ("internal-padding",
 581                                                              P_("Internal padding"),
 582                                                              P_("Amount of border space between the toolbar shadow and the buttons"),
 583                                                              0,
 584                                                              G_MAXINT,
 585                                                              DEFAULT_IPADDING,
 586                                                              GTK_PARAM_READABLE));
 587
 588   gtk_widget_class_install_style_property (widget_class,
 589                                            g_param_spec_int ("max-child-expand",
 590                                                              P_("Maximum child expand"),
 591                                                              P_("Maximum amount of space an expandable item will be given"),
 592                                                              0,
 593                                                              G_MAXINT,
 594                                                              G_MAXINT,
 595                                                              GTK_PARAM_READABLE));
 596
 597   gtk_widget_class_install_style_property (widget_class,
 598                                            g_param_spec_enum ("space-style",
 599                                                               P_("Space style"),
 600                                                               P_("Whether spacers are vertical lines or just blank"),
 601                                                               GTK_TYPE_TOOLBAR_SPACE_STYLE,
 602                                                               DEFAULT_SPACE_STYLE,
 603                                                               GTK_PARAM_READABLE));
 604
 605   gtk_widget_class_install_style_property (widget_class,
 606                                            g_param_spec_enum ("button-relief",
 607                                                               P_("Button relief"),
 608                                                               P_("Type of bevel around toolbar buttons"),
 609                                                               GTK_TYPE_RELIEF_STYLE,
 610                                                               GTK_RELIEF_NONE,
 611                                                               GTK_PARAM_READABLE));
 612   gtk_widget_class_install_style_property (widget_class,
 613                                            g_param_spec_enum ("shadow-type",
 614                                                               P_("Shadow type"),
 615                                                               P_("Style of bevel around the toolbar"),
 616                                                               GTK_TYPE_SHADOW_TYPE,
 617                                                               GTK_SHADOW_OUT,
 618                                                               GTK_PARAM_READABLE));
 619
 620   binding_set = gtk_binding_set_by_class (klass);
 621
 622   add_arrow_bindings (binding_set, GDK_KEY_Left, GTK_DIR_LEFT);
 623   add_arrow_bindings (binding_set, GDK_KEY_Right, GTK_DIR_RIGHT);
 624   add_arrow_bindings (binding_set, GDK_KEY_Up, GTK_DIR_UP);
 625   add_arrow_bindings (binding_set, GDK_KEY_Down, GTK_DIR_DOWN);
 626
 627   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Home, 0,
 628                                 "focus-home-or-end", 1,
 629                                 G_TYPE_BOOLEAN, TRUE);
 630   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Home, 0,
 631                                 "focus-home-or-end", 1,
 632                                 G_TYPE_BOOLEAN, TRUE);
 633   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_End, 0,
 634                                 "focus-home-or-end", 1,
 635                                 G_TYPE_BOOLEAN, FALSE);
 636   gtk_binding_entry_add_signal (binding_set, GDK_KEY_End, 0,
 637                                 "focus-home-or-end", 1,
 638                                 G_TYPE_BOOLEAN, FALSE);
 639
 640   add_ctrl_tab_bindings (binding_set, 0, GTK_DIR_TAB_FORWARD);
 641   add_ctrl_tab_bindings (binding_set, GDK_SHIFT_MASK, GTK_DIR_TAB_BACKWARD);
 642
 643   g_type_class_add_private (gobject_class, sizeof (GtkToolbarPrivate));
 644 }
 645
 646 static void
 647 toolbar_tool_shell_iface_init (GtkToolShellIface *iface)
 648 {
 649   iface->get_icon_size    = toolbar_get_icon_size;
 650   iface->get_orientation  = toolbar_get_orientation;
 651   iface->get_style        = toolbar_get_style;
 652   iface->get_relief_style = toolbar_get_relief_style;
 653   iface->rebuild_menu     = toolbar_rebuild_menu;
 654 }
 655
 656 static void
 657 gtk_toolbar_init (GtkToolbar *toolbar)
 658 {
 659   GtkToolbarPrivate *priv;
 660   GtkStyleContext *context;
 661
 662   toolbar->priv = G_TYPE_INSTANCE_GET_PRIVATE (toolbar,
 663                                                GTK_TYPE_TOOLBAR,
 664                                                GtkToolbarPrivate);
 665   priv = toolbar->priv;
 666
 667   gtk_widget_set_can_focus (GTK_WIDGET (toolbar), FALSE);
 668   gtk_widget_set_has_window (GTK_WIDGET (toolbar), FALSE);
 669
 670   priv->orientation = GTK_ORIENTATION_HORIZONTAL;
 671   priv->style = DEFAULT_TOOLBAR_STYLE;
 672   priv->icon_size = DEFAULT_ICON_SIZE;
 673   priv->animation = DEFAULT_ANIMATION_STATE;
 674
 675   priv->arrow_button = gtk_toggle_button_new ();
 676   g_signal_connect (priv->arrow_button, "button-press-event",
 677                     G_CALLBACK (gtk_toolbar_arrow_button_press), toolbar);
 678   g_signal_connect (priv->arrow_button, "clicked",
 679                     G_CALLBACK (gtk_toolbar_arrow_button_clicked), toolbar);
 680   gtk_button_set_relief (GTK_BUTTON (priv->arrow_button),
 681                          get_button_relief (toolbar));
 682
 683   gtk_button_set_focus_on_click (GTK_BUTTON (priv->arrow_button), FALSE);
 684
 685   priv->arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_NONE);
 686   gtk_widget_set_name (priv->arrow, "gtk-toolbar-arrow");
 687   gtk_widget_show (priv->arrow);
 688   gtk_container_add (GTK_CONTAINER (priv->arrow_button), priv->arrow);
 689
 690   gtk_widget_set_parent (priv->arrow_button, GTK_WIDGET (toolbar));
 691
 692   /* which child position a drop will occur at */
 693   priv->menu = NULL;
 694   priv->show_arrow = TRUE;
 695   priv->settings = NULL;
 696
 697   priv->max_homogeneous_pixels = -1;
 698
 699   priv->timer = g_timer_new ();
 700
 701   context = gtk_widget_get_style_context (GTK_WIDGET (toolbar));
 702   gtk_style_context_add_class (context, GTK_STYLE_CLASS_TOOLBAR);
 703 }
 704
 705 static void
 706 gtk_toolbar_set_property (GObject      *object,
 707                           guint         prop_id,
 708                           const GValue *value,
 709                           GParamSpec   *pspec)
 710 {
 711   GtkToolbar *toolbar = GTK_TOOLBAR (object);
 712   GtkToolbarPrivate *priv = toolbar->priv;
 713
 714   switch (prop_id)
 715     {
 716     case PROP_ORIENTATION:
 717       g_signal_emit (toolbar, toolbar_signals[ORIENTATION_CHANGED], 0,
 718                      g_value_get_enum (value));
 719       break;
 720     case PROP_TOOLBAR_STYLE:
 721       gtk_toolbar_set_style (toolbar, g_value_get_enum (value));
 722       break;
 723     case PROP_SHOW_ARROW:
 724       gtk_toolbar_set_show_arrow (toolbar, g_value_get_boolean (value));
 725       break;
 726     case PROP_ICON_SIZE:
 727       gtk_toolbar_set_icon_size (toolbar, g_value_get_int (value));
 728       break;
 729     case PROP_ICON_SIZE_SET:
 730       if (g_value_get_boolean (value))
 731         priv->icon_size_set = TRUE;
 732       else
 733         gtk_toolbar_unset_icon_size (toolbar);
 734       break;
 735     default:
 736       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 737       break;
 738     }
 739 }
 740
 741 static void
 742 gtk_toolbar_get_property (GObject    *object,
 743                           guint       prop_id,
 744                           GValue     *value,
 745                           GParamSpec *pspec)
 746 {
 747   GtkToolbar *toolbar = GTK_TOOLBAR (object);
 748   GtkToolbarPrivate *priv = toolbar->priv;
 749
 750   switch (prop_id)
 751     {
 752     case PROP_ORIENTATION:
 753       g_value_set_enum (value, priv->orientation);
 754       break;
 755     case PROP_TOOLBAR_STYLE:
 756       g_value_set_enum (value, priv->style);
 757       break;
 758     case PROP_SHOW_ARROW:
 759       g_value_set_boolean (value, priv->show_arrow);
 760       break;
 761     case PROP_ICON_SIZE:
 762       g_value_set_int (value, gtk_toolbar_get_icon_size (toolbar));
 763       break;
 764     case PROP_ICON_SIZE_SET:
 765       g_value_set_boolean (value, priv->icon_size_set);
 766       break;
 767     default:
 768       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 769       break;
 770     }
 771 }
 772
 773 static void
 774 gtk_toolbar_map (GtkWidget *widget)
 775 {
 776   GtkToolbar *toolbar = GTK_TOOLBAR (widget);
 777   GtkToolbarPrivate *priv = toolbar->priv;
 778
 779   GTK_WIDGET_CLASS (gtk_toolbar_parent_class)->map (widget);
 780
 781   if (priv->event_window)
 782     gdk_window_show_unraised (priv->event_window);
 783 }
 784
 785 static void
 786 gtk_toolbar_unmap (GtkWidget *widget)
 787 {
 788   GtkToolbar *toolbar = GTK_TOOLBAR (widget);
 789   GtkToolbarPrivate *priv = toolbar->priv;
 790
 791   if (priv->event_window)
 792     gdk_window_hide (priv->event_window);
 793
 794   GTK_WIDGET_CLASS (gtk_toolbar_parent_class)->unmap (widget);
 795 }
 796
 797 static void
 798 gtk_toolbar_realize (GtkWidget *widget)
 799 {
 800   GtkAllocation allocation;
 801   GtkToolbar *toolbar = GTK_TOOLBAR (widget);
 802   GtkToolbarPrivate *priv = toolbar->priv;
 803   GdkWindow *window;
 804   GdkWindowAttr attributes;
 805   gint attributes_mask;
 806   guint border_width;
 807
 808   gtk_widget_set_realized (widget, TRUE);
 809
 810   gtk_widget_get_allocation (widget, &allocation);
 811   border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
 812
 813   attributes.wclass = GDK_INPUT_ONLY;
 814   attributes.window_type = GDK_WINDOW_CHILD;
 815   attributes.x = allocation.x + border_width;
 816   attributes.y = allocation.y + border_width;
 817   attributes.width = allocation.width - border_width * 2;
 818   attributes.height = allocation.height - border_width * 2;
 819   attributes.event_mask = gtk_widget_get_events (widget);
 820   attributes.event_mask |= (GDK_BUTTON_PRESS_MASK |
 821                             GDK_BUTTON_RELEASE_MASK |
 822                             GDK_ENTER_NOTIFY_MASK |
 823                             GDK_LEAVE_NOTIFY_MASK);
 824
 825   attributes_mask = GDK_WA_X | GDK_WA_Y;
 826
 827   window = gtk_widget_get_parent_window (widget);
 828   gtk_widget_set_window (widget, window);
 829   g_object_ref (window);
 830
 831   priv->event_window = gdk_window_new (gtk_widget_get_parent_window (widget),
 832                                        &attributes, attributes_mask);
 833   gdk_window_set_user_data (priv->event_window, toolbar);
 834 }
 835
 836 static void
 837 gtk_toolbar_unrealize (GtkWidget *widget)
 838 {
 839   GtkToolbar *toolbar = GTK_TOOLBAR (widget);
 840   GtkToolbarPrivate *priv = toolbar->priv;
 841
 842   if (priv->event_window)
 843     {
 844       gdk_window_set_user_data (priv->event_window, NULL);
 845       gdk_window_destroy (priv->event_window);
 846       priv->event_window = NULL;
 847     }
 848
 849   GTK_WIDGET_CLASS (gtk_toolbar_parent_class)->unrealize (widget);
 850 }
 851
 852 static gint
 853 gtk_toolbar_draw (GtkWidget *widget,
 854                   cairo_t   *cr)
 855 {
 856   GtkToolbar *toolbar = GTK_TOOLBAR (widget);
 857   GtkToolbarPrivate *priv = toolbar->priv;
 858   GtkStyleContext *context;
 859   GtkStateFlags state;
 860   GList *list;
 861   guint border_width;
 862
 863   border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
 864   context = gtk_widget_get_style_context (widget);
 865   state = gtk_widget_get_state_flags (widget);
 866
 867   gtk_style_context_save (context);
 868   gtk_style_context_set_state (context, state);
 869
 870   gtk_render_background (context, cr, border_width, border_width,
 871                          gtk_widget_get_allocated_width (widget) - 2 * border_width,
 872                          gtk_widget_get_allocated_height (widget) - 2 * border_width);
 873   gtk_render_frame (context, cr, border_width, border_width,
 874                     gtk_widget_get_allocated_width (widget) - 2 * border_width,
 875                     gtk_widget_get_allocated_height (widget) - 2 * border_width);
 876
 877   for (list = priv->content; list != NULL; list = list->next)
 878     {
 879       ToolbarContent *content = list->data;
 880
 881       toolbar_content_draw (content, GTK_CONTAINER (widget), cr);
 882     }
 883
 884   gtk_container_propagate_draw (GTK_CONTAINER (widget),
 885                                 priv->arrow_button,
 886                                 cr);
 887
 888   gtk_style_context_restore (context);
 889
 890   return FALSE;
 891 }
 892
 893 static void
 894 gtk_toolbar_size_request (GtkWidget      *widget,
 895                           GtkRequisition *requisition)
 896 {
 897   GtkToolbar *toolbar = GTK_TOOLBAR (widget);
 898   GtkToolbarPrivate *priv = toolbar->priv;
 899   GList *list;
 900   gint max_child_height;
 901   gint max_child_width;
 902   gint max_homogeneous_child_width;
 903   gint max_homogeneous_child_height;
 904   gint homogeneous_size;
 905   gint long_req;
 906   gint pack_front_size;
 907   gint ipadding;
 908   guint border_width;
 909   GtkRequisition arrow_requisition;
 910
 911   max_homogeneous_child_width = 0;
 912   max_homogeneous_child_height = 0;
 913   max_child_width = 0;
 914   max_child_height = 0;
 915   for (list = priv->content; list != NULL; list = list->next)
 916     {
 917       GtkRequisition requisition;
 918       ToolbarContent *content = list->data;
 919
 920       if (!toolbar_content_visible (content, toolbar))
 921         continue;
 922
 923       toolbar_content_size_request (content, toolbar, &requisition);
 924
 925       max_child_width = MAX (max_child_width, requisition.width);
 926       max_child_height = MAX (max_child_height, requisition.height);
 927
 928       if (toolbar_content_is_homogeneous (content, toolbar))
 929         {
 930           max_homogeneous_child_width = MAX (max_homogeneous_child_width, requisition.width);
 931           max_homogeneous_child_height = MAX (max_homogeneous_child_height, requisition.height);
 932         }
 933     }
 934
 935   if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
 936     homogeneous_size = max_homogeneous_child_width;
 937   else
 938     homogeneous_size = max_homogeneous_child_height;
 939
 940   pack_front_size = 0;
 941   for (list = priv->content; list != NULL; list = list->next)
 942     {
 943       ToolbarContent *content = list->data;
 944       guint size;
 945
 946       if (!toolbar_content_visible (content, toolbar))
 947         continue;
 948
 949       if (toolbar_content_is_homogeneous (content, toolbar))
 950         {
 951           size = homogeneous_size;
 952         }
 953       else
 954         {
 955           GtkRequisition requisition;
 956
 957           toolbar_content_size_request (content, toolbar, &requisition);
 958
 959           if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
 960             size = requisition.width;
 961           else
 962             size = requisition.height;
 963         }
 964
 965       pack_front_size += size;
 966     }
 967
 968   if (priv->show_arrow)
 969     {
 970       gtk_widget_get_preferred_size (priv->arrow_button,
 971                                      &arrow_requisition, NULL);
 972
 973       if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
 974         long_req = arrow_requisition.width;
 975       else
 976         long_req = arrow_requisition.height;
 977
 978       /* There is no point requesting space for the arrow if that would take
 979        * up more space than all the items combined
 980        */
 981       long_req = MIN (long_req, pack_front_size);
 982     }
 983   else
 984     {
 985       arrow_requisition.height = 0;
 986       arrow_requisition.width = 0;
 987
 988       long_req = pack_front_size;
 989     }
 990
 991   if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
 992     {
 993       requisition->width = long_req;
 994       requisition->height = MAX (max_child_height, arrow_requisition.height);
 995     }
 996   else
 997     {
 998       requisition->height = long_req;
 999       requisition->width = MAX (max_child_width, arrow_requisition.width);
1000     }
1001
1002   /* Extra spacing */
1003   ipadding = get_internal_padding (toolbar);
1004
1005   border_width = gtk_container_get_border_width (GTK_CONTAINER (toolbar));
1006   requisition->width += 2 * (ipadding + border_width);
1007   requisition->height += 2 * (ipadding + border_width);
1008
1009   if (get_shadow_type (toolbar) != GTK_SHADOW_NONE)
1010     {
1011       GtkStyleContext *context;
1012       GtkStateFlags state;
1013       GtkBorder padding;
1014
1015       context = gtk_widget_get_style_context (widget);
1016       state = gtk_widget_get_state_flags (widget);
1017       gtk_style_context_get_padding (context, state, &padding);
1018
1019       requisition->width += padding.left + padding.right;
1020       requisition->height += padding.top + padding.bottom;
1021     }
1022
1023   priv->button_maxw = max_homogeneous_child_width;
1024   priv->button_maxh = max_homogeneous_child_height;
1025 }
1026
1027 static void
1028 gtk_toolbar_get_preferred_width (GtkWidget *widget,
1029                                  gint      *minimum,
1030                                  gint      *natural)
1031 {
1032   GtkRequisition requisition;
1033
1034   gtk_toolbar_size_request (widget, &requisition);
1035
1036   *minimum = *natural = requisition.width;
1037 }
1038
1039 static void
1040 gtk_toolbar_get_preferred_height (GtkWidget *widget,
1041                                   gint      *minimum,
1042                                   gint      *natural)
1043 {
1044   GtkRequisition requisition;
1045
1046   gtk_toolbar_size_request (widget, &requisition);
1047
1048   *minimum = *natural = requisition.height;
1049 }
1050
1051 static gint
1052 position (GtkToolbar *toolbar,
1053           gint        from,
1054           gint        to,
1055           gdouble     elapsed)
1056 {
1057   GtkToolbarPrivate *priv = toolbar->priv;
1058   gint n_pixels;
1059
1060   if (!priv->animation)
1061     return to;
1062
1063   if (elapsed <= ACCEL_THRESHOLD)
1064     {
1065       n_pixels = SLIDE_SPEED * elapsed;
1066     }
1067   else
1068     {
1069       /* The formula is a second degree polynomial in
1070        * @elapsed that has the line SLIDE_SPEED * @elapsed
1071        * as tangent for @elapsed == ACCEL_THRESHOLD.
1072        * This makes @n_pixels a smooth function of elapsed time.
1073        */
1074       n_pixels = (SLIDE_SPEED / ACCEL_THRESHOLD) * elapsed * elapsed -
1075         SLIDE_SPEED * elapsed + SLIDE_SPEED * ACCEL_THRESHOLD;
1076     }
1077
1078   if (to > from)
1079     return MIN (from + n_pixels, to);
1080   else
1081     return MAX (from - n_pixels, to);
1082 }
1083
1084 static void
1085 compute_intermediate_allocation (GtkToolbar          *toolbar,
1086                                  const GtkAllocation *start,
1087                                  const GtkAllocation *goal,
1088                                  GtkAllocation       *intermediate)
1089 {
1090   GtkToolbarPrivate *priv = toolbar->priv;
1091   gdouble elapsed = g_timer_elapsed (priv->timer, NULL);
1092
1093   intermediate->x      = position (toolbar, start->x, goal->x, elapsed);
1094   intermediate->y      = position (toolbar, start->y, goal->y, elapsed);
1095   intermediate->width  = position (toolbar, start->x + start->width,
1096                                    goal->x + goal->width,
1097                                    elapsed) - intermediate->x;
1098   intermediate->height = position (toolbar, start->y + start->height,
1099                                    goal->y + goal->height,
1100                                    elapsed) - intermediate->y;
1101 }
1102
1103 static void
1104 fixup_allocation_for_rtl (gint           total_size,
1105                           GtkAllocation *allocation)
1106 {
1107   allocation->x += (total_size - (2 * allocation->x + allocation->width));
1108 }
1109
1110 static void
1111 fixup_allocation_for_vertical (GtkAllocation *allocation)
1112 {
1113   gint tmp;
1114
1115   tmp = allocation->x;
1116   allocation->x = allocation->y;
1117   allocation->y = tmp;
1118
1119   tmp = allocation->width;
1120   allocation->width = allocation->height;
1121   allocation->height = tmp;
1122 }
1123
1124 static gint
1125 get_item_size (GtkToolbar     *toolbar,
1126                ToolbarContent *content)
1127 {
1128   GtkToolbarPrivate *priv = toolbar->priv;
1129   GtkRequisition requisition;
1130
1131   toolbar_content_size_request (content, toolbar, &requisition);
1132
1133   if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
1134     {
1135       if (toolbar_content_is_homogeneous (content, toolbar))
1136         return priv->button_maxw;
1137       else
1138         return requisition.width;
1139     }
1140   else
1141     {
1142       if (toolbar_content_is_homogeneous (content, toolbar))
1143         return priv->button_maxh;
1144       else
1145         return requisition.height;
1146     }
1147 }
1148
1149 static gboolean
1150 slide_idle_handler (gpointer data)
1151 {
1152   GtkToolbar *toolbar = GTK_TOOLBAR (data);
1153   GtkToolbarPrivate *priv = toolbar->priv;
1154   GList *list;
1155
1156   if (priv->need_sync)
1157     {
1158       gdk_flush ();
1159       priv->need_sync = FALSE;
1160     }
1161
1162   for (list = priv->content; list != NULL; list = list->next)
1163     {
1164       ToolbarContent *content = list->data;
1165       ItemState state;
1166       GtkAllocation goal_allocation;
1167       GtkAllocation allocation;
1168       gboolean cont;
1169
1170       state = toolbar_content_get_state (content);
1171       toolbar_content_get_goal_allocation (content, &goal_allocation);
1172       toolbar_content_get_allocation (content, &allocation);
1173
1174       cont = FALSE;
1175
1176       if (state == NOT_ALLOCATED)
1177         {
1178           /* an unallocated item means that size allocate has to
1179            * called at least once more
1180            */
1181           cont = TRUE;
1182         }
1183
1184       /* An invisible item with a goal allocation of
1185        * 0 is already at its goal.
1186        */
1187       if ((state == NORMAL || state == OVERFLOWN) &&
1188           ((goal_allocation.width != 0 &&
1189             goal_allocation.height != 0) ||
1190            toolbar_content_child_visible (content)))
1191         {
1192           if ((goal_allocation.x != allocation.x ||
1193                goal_allocation.y != allocation.y ||
1194                goal_allocation.width != allocation.width ||
1195                goal_allocation.height != allocation.height))
1196             {
1197               /* An item is not in its right position yet. Note
1198                * that OVERFLOWN items do get an allocation in
1199                * gtk_toolbar_size_allocate(). This way you can see
1200                * them slide back in when you drag an item off the
1201                * toolbar.
1202                */
1203               cont = TRUE;
1204             }
1205         }
1206
1207       if (toolbar_content_is_placeholder (content) &&
1208           toolbar_content_disappearing (content) &&
1209           toolbar_content_child_visible (content))
1210         {
1211           /* A disappearing placeholder is still visible.
1212            */
1213
1214           cont = TRUE;
1215         }
1216
1217       if (cont)
1218         {
1219           gtk_widget_queue_resize_no_redraw (GTK_WIDGET (toolbar));
1220
1221           return TRUE;
1222         }
1223     }
1224
1225   gtk_widget_queue_resize_no_redraw (GTK_WIDGET (toolbar));
1226
1227   priv->is_sliding = FALSE;
1228   priv->idle_id = 0;
1229
1230   return FALSE;
1231 }
1232
1233 static gboolean
1234 rect_within (GtkAllocation *a1,
1235              GtkAllocation *a2)
1236 {
1237   return (a1->x >= a2->x                         &&
1238           a1->x + a1->width <= a2->x + a2->width &&
1239           a1->y >= a2->y                         &&
1240           a1->y + a1->height <= a2->y + a2->height);
1241 }
1242
1243 static void
1244 gtk_toolbar_begin_sliding (GtkToolbar *toolbar)
1245 {
1246   GtkAllocation allocation;
1247   GtkWidget *widget = GTK_WIDGET (toolbar);
1248   GtkToolbarPrivate *priv = toolbar->priv;
1249   GtkStyleContext *context;
1250   GtkStateFlags state;
1251   GtkBorder padding;
1252   GList *list;
1253   gint cur_x;
1254   gint cur_y;
1255   gint border_width;
1256   gboolean rtl;
1257   gboolean vertical;
1258
1259   /* Start the sliding. This function copies the allocation of every
1260    * item into content->start_allocation. For items that haven't
1261    * been allocated yet, we calculate their position and save that
1262    * in start_allocatino along with zero width and zero height.
1263    *
1264    * FIXME: It would be nice if we could share this code with
1265    * the equivalent in gtk_widget_size_allocate().
1266    */
1267   priv->is_sliding = TRUE;
1268
1269   if (!priv->idle_id)
1270     priv->idle_id = gdk_threads_add_idle (slide_idle_handler, toolbar);
1271
1272   gtk_widget_get_allocation (widget, &allocation);
1273   context = gtk_widget_get_style_context (widget);
1274   state = gtk_widget_get_state_flags (widget);
1275   gtk_style_context_get_padding (context, state, &padding);
1276
1277   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
1278   vertical = (priv->orientation == GTK_ORIENTATION_VERTICAL);
1279   border_width = get_internal_padding (toolbar) + gtk_container_get_border_width (GTK_CONTAINER (toolbar));
1280
1281   if (rtl)
1282     {
1283       cur_x = allocation.width - border_width - padding.right;
1284       cur_y = allocation.height - border_width - padding.top;
1285     }
1286   else
1287     {
1288       cur_x = border_width + padding.left;
1289       cur_y = border_width + padding.top;
1290     }
1291
1292   cur_x += allocation.x;
1293   cur_y += allocation.y;
1294
1295   for (list = priv->content; list != NULL; list = list->next)
1296     {
1297       ToolbarContent *content = list->data;
1298       GtkAllocation new_start_allocation;
1299       GtkAllocation item_allocation;
1300       ItemState state;
1301
1302       state = toolbar_content_get_state (content);
1303       toolbar_content_get_allocation (content, &item_allocation);
1304
1305       if ((state == NORMAL &&
1306            rect_within (&item_allocation, &allocation)) ||
1307           state == OVERFLOWN)
1308         {
1309           new_start_allocation = item_allocation;
1310         }
1311       else
1312         {
1313           new_start_allocation.x = cur_x;
1314           new_start_allocation.y = cur_y;
1315
1316           if (vertical)
1317             {
1318               new_start_allocation.width = allocation.width -
1319                                            2 * border_width -
1320                                            padding.left - padding.right;
1321               new_start_allocation.height = 0;
1322             }
1323           else
1324             {
1325               new_start_allocation.width = 0;
1326               new_start_allocation.height = allocation.height -
1327                                             2 * border_width -
1328                                             padding.top - padding.bottom;
1329             }
1330         }
1331
1332       if (vertical)
1333         cur_y = new_start_allocation.y + new_start_allocation.height;
1334       else if (rtl)
1335         cur_x = new_start_allocation.x;
1336       else
1337         cur_x = new_start_allocation.x + new_start_allocation.width;
1338
1339       toolbar_content_set_start_allocation (content, &new_start_allocation);
1340     }
1341
1342   /* This resize will run before the first idle handler. This
1343    * will make sure that items get the right goal allocation
1344    * so that the idle handler will not immediately return
1345    * FALSE
1346    */
1347   gtk_widget_queue_resize_no_redraw (GTK_WIDGET (toolbar));
1348   g_timer_reset (priv->timer);
1349 }
1350
1351 static void
1352 gtk_toolbar_stop_sliding (GtkToolbar *toolbar)
1353 {
1354   GtkToolbarPrivate *priv = toolbar->priv;
1355
1356   if (priv->is_sliding)
1357     {
1358       GList *list;
1359
1360       priv->is_sliding = FALSE;
1361
1362       if (priv->idle_id)
1363         {
1364           g_source_remove (priv->idle_id);
1365           priv->idle_id = 0;
1366         }
1367
1368       list = priv->content;
1369       while (list)
1370         {
1371           ToolbarContent *content = list->data;
1372           list = list->next;
1373
1374           if (toolbar_content_is_placeholder (content))
1375             {
1376               toolbar_content_remove (content, toolbar);
1377               toolbar_content_free (content);
1378             }
1379         }
1380
1381       gtk_widget_queue_resize_no_redraw (GTK_WIDGET (toolbar));
1382     }
1383 }
1384
1385 static void
1386 remove_item (GtkWidget *menu_item,
1387              gpointer   data)
1388 {
1389   gtk_container_remove (GTK_CONTAINER (gtk_widget_get_parent (menu_item)),
1390                         menu_item);
1391 }
1392
1393 static void
1394 menu_deactivated (GtkWidget  *menu,
1395                   GtkToolbar *toolbar)
1396 {
1397   GtkToolbarPrivate *priv = toolbar->priv;
1398
1399   gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (priv->arrow_button), FALSE);
1400 }
1401
1402 static void
1403 menu_detached (GtkWidget  *widget,
1404                GtkMenu    *menu)
1405 {
1406   GtkToolbar *toolbar = GTK_TOOLBAR (widget);
1407   GtkToolbarPrivate *priv = toolbar->priv;
1408
1409   priv->menu = NULL;
1410 }
1411
1412 static void
1413 rebuild_menu (GtkToolbar *toolbar)
1414 {
1415   GtkToolbarPrivate *priv = toolbar->priv;
1416   GList *list, *children;
1417
1418   if (!priv->menu)
1419     {
1420       priv->menu = GTK_MENU (gtk_menu_new());
1421       gtk_menu_attach_to_widget (priv->menu,
1422                                  GTK_WIDGET (toolbar),
1423                                  menu_detached);
1424
1425       g_signal_connect (priv->menu, "deactivate",
1426                         G_CALLBACK (menu_deactivated), toolbar);
1427     }
1428
1429   gtk_container_foreach (GTK_CONTAINER (priv->menu), remove_item, NULL);
1430
1431   for (list = priv->content; list != NULL; list = list->next)
1432     {
1433       ToolbarContent *content = list->data;
1434
1435       if (toolbar_content_get_state (content) == OVERFLOWN &&
1436           !toolbar_content_is_placeholder (content))
1437         {
1438           GtkWidget *menu_item = toolbar_content_retrieve_menu_item (content);
1439
1440           if (menu_item)
1441             {
1442               g_assert (GTK_IS_MENU_ITEM (menu_item));
1443               gtk_menu_shell_append (GTK_MENU_SHELL (priv->menu), menu_item);
1444             }
1445         }
1446     }
1447
1448   /* Remove leading and trailing separator items */
1449   children = gtk_container_get_children (GTK_CONTAINER (priv->menu));
1450
1451   list = children;
1452   while (list && GTK_IS_SEPARATOR_MENU_ITEM (list->data))
1453     {
1454       GtkWidget *child = list->data;
1455
1456       gtk_container_remove (GTK_CONTAINER (priv->menu), child);
1457       list = list->next;
1458     }
1459   g_list_free (children);
1460
1461   /* Regenerate the list of children so we don't try to remove items twice */
1462   children = gtk_container_get_children (GTK_CONTAINER (priv->menu));
1463
1464   list = g_list_last (children);
1465   while (list && GTK_IS_SEPARATOR_MENU_ITEM (list->data))
1466     {
1467       GtkWidget *child = list->data;
1468
1469       gtk_container_remove (GTK_CONTAINER (priv->menu), child);
1470       list = list->prev;
1471     }
1472   g_list_free (children);
1473
1474   priv->need_rebuild = FALSE;
1475 }
1476
1477 static void
1478 gtk_toolbar_size_allocate (GtkWidget     *widget,
1479                            GtkAllocation *allocation)
1480 {
1481   GtkAllocation widget_allocation;
1482   GtkToolbar *toolbar = GTK_TOOLBAR (widget);
1483   GtkToolbarPrivate *priv = toolbar->priv;
1484   GtkAllocation *allocations;
1485   ItemState *new_states;
1486   GtkAllocation arrow_allocation;
1487   GtkStyleContext *context;
1488   GtkStateFlags state;
1489   GtkBorder padding;
1490   gint arrow_size;
1491   gint size, pos, short_size;
1492   GList *list;
1493   gint i;
1494   gboolean need_arrow;
1495   gint n_expand_items;
1496   gint border_width;
1497   gint available_size;
1498   gint n_items;
1499   gint needed_size;
1500   GtkRequisition arrow_requisition;
1501   gboolean overflowing;
1502   gboolean size_changed;
1503   GtkAllocation item_area;
1504   GtkShadowType shadow_type;
1505
1506   context = gtk_widget_get_style_context (widget);
1507   state = gtk_widget_get_state_flags (widget);
1508   gtk_style_context_get_padding (context, state, &padding);
1509
1510   gtk_widget_get_allocation (widget, &widget_allocation);
1511   size_changed = FALSE;
1512   if (widget_allocation.x != allocation->x ||
1513       widget_allocation.y != allocation->y ||
1514       widget_allocation.width != allocation->width ||
1515       widget_allocation.height != allocation->height)
1516     {
1517       size_changed = TRUE;
1518     }
1519
1520   if (size_changed)
1521     gtk_toolbar_stop_sliding (toolbar);
1522
1523   gtk_widget_set_allocation (widget, allocation);
1524
1525   border_width = gtk_container_get_border_width (GTK_CONTAINER (toolbar));
1526
1527   if (gtk_widget_get_realized (widget))
1528     gdk_window_move_resize (priv->event_window,
1529                             allocation->x + border_width,
1530                             allocation->y + border_width,
1531                             allocation->width - border_width * 2,
1532                             allocation->height - border_width * 2);
1533
1534   border_width += get_internal_padding (toolbar);
1535
1536   gtk_widget_get_preferred_size (priv->arrow_button,
1537                                  &arrow_requisition, NULL);
1538
1539   shadow_type = get_shadow_type (toolbar);
1540
1541   if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
1542     {
1543       available_size = size = allocation->width - 2 * border_width;
1544       short_size = allocation->height - 2 * border_width;
1545       arrow_size = arrow_requisition.width;
1546
1547       if (shadow_type != GTK_SHADOW_NONE)
1548         {
1549           available_size -= padding.left + padding.right;
1550           short_size -= padding.top + padding.bottom;
1551         }
1552     }
1553   else
1554     {
1555       available_size = size = allocation->height - 2 * border_width;
1556       short_size = allocation->width - 2 * border_width;
1557       arrow_size = arrow_requisition.height;
1558
1559       if (shadow_type != GTK_SHADOW_NONE)
1560         {
1561           available_size -= padding.top + padding.bottom;
1562           short_size -= padding.left + padding.right;
1563         }
1564     }
1565
1566   n_items = g_list_length (priv->content);
1567   allocations = g_new0 (GtkAllocation, n_items);
1568   new_states = g_new0 (ItemState, n_items);
1569
1570   needed_size = 0;
1571   need_arrow = FALSE;
1572   for (list = priv->content; list != NULL; list = list->next)
1573     {
1574       ToolbarContent *content = list->data;
1575
1576       if (toolbar_content_visible (content, toolbar))
1577         {
1578           needed_size += get_item_size (toolbar, content);
1579
1580           /* Do we need an arrow?
1581            *
1582            * Assume we don't, and see if any non-separator item
1583            * with a proxy menu item is then going to overflow.
1584            */
1585           if (needed_size > available_size &&
1586               !need_arrow &&
1587               priv->show_arrow &&
1588               toolbar_content_has_proxy_menu_item (content) &&
1589               !toolbar_content_is_separator (content))
1590             {
1591               need_arrow = TRUE;
1592             }
1593         }
1594     }
1595
1596   if (need_arrow)
1597     size = available_size - arrow_size;
1598   else
1599     size = available_size;
1600
1601   /* calculate widths and states of items */
1602   overflowing = FALSE;
1603   for (list = priv->content, i = 0; list != NULL; list = list->next, ++i)
1604     {
1605       ToolbarContent *content = list->data;
1606       gint item_size;
1607
1608       if (!toolbar_content_visible (content, toolbar))
1609         {
1610           new_states[i] = HIDDEN;
1611           continue;
1612         }
1613
1614       item_size = get_item_size (toolbar, content);
1615       if (item_size <= size && !overflowing)
1616         {
1617           size -= item_size;
1618           allocations[i].width = item_size;
1619           new_states[i] = NORMAL;
1620         }
1621       else
1622         {
1623           overflowing = TRUE;
1624           new_states[i] = OVERFLOWN;
1625           allocations[i].width = item_size;
1626         }
1627     }
1628
1629   /* calculate width of arrow */
1630   if (need_arrow)
1631     {
1632       arrow_allocation.width = arrow_size;
1633       arrow_allocation.height = MAX (short_size, 1);
1634     }
1635
1636   /* expand expandable items */
1637
1638   /* We don't expand when there is an overflow menu,
1639    * because that leads to weird jumps when items get
1640    * moved to the overflow menu and the expanding
1641    * items suddenly get a lot of extra space
1642    */
1643   if (!overflowing)
1644     {
1645       gint max_child_expand;
1646       n_expand_items = 0;
1647
1648       for (i = 0, list = priv->content; list != NULL; list = list->next, ++i)
1649         {
1650           ToolbarContent *content = list->data;
1651
1652           if (toolbar_content_get_expand (content) && new_states[i] == NORMAL)
1653             n_expand_items++;
1654         }
1655
1656       max_child_expand = get_max_child_expand (toolbar);
1657       for (list = priv->content, i = 0; list != NULL; list = list->next, ++i)
1658         {
1659           ToolbarContent *content = list->data;
1660
1661           if (toolbar_content_get_expand (content) && new_states[i] == NORMAL)
1662             {
1663               gint extra = size / n_expand_items;
1664               if (size % n_expand_items != 0)
1665                 extra++;
1666
1667               if (extra > max_child_expand)
1668                 extra = max_child_expand;
1669
1670               allocations[i].width += extra;
1671               size -= extra;
1672               n_expand_items--;
1673             }
1674         }
1675
1676       g_assert (n_expand_items == 0);
1677     }
1678
1679   /* position items */
1680   pos = border_width;
1681   for (list = priv->content, i = 0; list != NULL; list = list->next, ++i)
1682     {
1683       /* Both NORMAL and OVERFLOWN items get a position.
1684        * This ensures that sliding will work for OVERFLOWN items too.
1685        */
1686       if (new_states[i] == NORMAL || new_states[i] == OVERFLOWN)
1687         {
1688           allocations[i].x = pos;
1689           allocations[i].y = border_width;
1690           allocations[i].height = short_size;
1691
1692           pos += allocations[i].width;
1693         }
1694     }
1695
1696   /* position arrow */
1697   if (need_arrow)
1698     {
1699       arrow_allocation.x = available_size - border_width - arrow_allocation.width;
1700       arrow_allocation.y = border_width;
1701     }
1702
1703   item_area.x = border_width;
1704   item_area.y = border_width;
1705   item_area.width = available_size - (need_arrow? arrow_size : 0);
1706   item_area.height = short_size;
1707
1708   /* fix up allocations in the vertical or RTL cases */
1709   if (priv->orientation == GTK_ORIENTATION_VERTICAL)
1710     {
1711       for (i = 0; i < n_items; ++i)
1712         fixup_allocation_for_vertical (&(allocations[i]));
1713
1714       if (need_arrow)
1715         fixup_allocation_for_vertical (&arrow_allocation);
1716
1717       fixup_allocation_for_vertical (&item_area);
1718     }
1719   else if (gtk_widget_get_direction (GTK_WIDGET (toolbar)) == GTK_TEXT_DIR_RTL)
1720     {
1721       for (i = 0; i < n_items; ++i)
1722         fixup_allocation_for_rtl (available_size, &(allocations[i]));
1723
1724       if (need_arrow)
1725         fixup_allocation_for_rtl (available_size, &arrow_allocation);
1726
1727       fixup_allocation_for_rtl (available_size, &item_area);
1728     }
1729
1730   /* translate the items by allocation->(x,y) */
1731   for (i = 0; i < n_items; ++i)
1732     {
1733       allocations[i].x += allocation->x;
1734       allocations[i].y += allocation->y;
1735
1736       if (shadow_type != GTK_SHADOW_NONE)
1737         {
1738           allocations[i].x += padding.left;
1739           allocations[i].y += padding.top;
1740         }
1741     }
1742
1743   if (need_arrow)
1744     {
1745       arrow_allocation.x += allocation->x;
1746       arrow_allocation.y += allocation->y;
1747
1748       if (shadow_type != GTK_SHADOW_NONE)
1749         {
1750           arrow_allocation.x += padding.left;
1751           arrow_allocation.y += padding.top;
1752         }
1753     }
1754
1755   item_area.x += allocation->x;
1756   item_area.y += allocation->y;
1757   if (shadow_type != GTK_SHADOW_NONE)
1758     {
1759       item_area.x += padding.left;
1760       item_area.y += padding.top;
1761     }
1762
1763   /* did anything change? */
1764   for (list = priv->content, i = 0; list != NULL; list = list->next, i++)
1765     {
1766       ToolbarContent *content = list->data;
1767
1768       if (toolbar_content_get_state (content) == NORMAL &&
1769           new_states[i] != NORMAL)
1770         {
1771           /* an item disappeared and we didn't change size, so begin sliding */
1772           if (!size_changed)
1773             gtk_toolbar_begin_sliding (toolbar);
1774         }
1775     }
1776
1777   /* finally allocate the items */
1778   if (priv->is_sliding)
1779     {
1780       for (list = priv->content, i = 0; list != NULL; list = list->next, i++)
1781         {
1782           ToolbarContent *content = list->data;
1783
1784           toolbar_content_set_goal_allocation (content, &(allocations[i]));
1785         }
1786     }
1787
1788   for (list = priv->content, i = 0; list != NULL; list = list->next, ++i)
1789     {
1790       ToolbarContent *content = list->data;
1791
1792       if (new_states[i] == OVERFLOWN || new_states[i] == NORMAL)
1793         {
1794           GtkAllocation alloc;
1795           GtkAllocation start_allocation = { 0, };
1796           GtkAllocation goal_allocation;
1797
1798           if (priv->is_sliding)
1799             {
1800               toolbar_content_get_start_allocation (content, &start_allocation);
1801               toolbar_content_get_goal_allocation (content, &goal_allocation);
1802
1803               compute_intermediate_allocation (toolbar,
1804                                                &start_allocation,
1805                                                &goal_allocation,
1806                                                &alloc);
1807
1808               priv->need_sync = TRUE;
1809             }
1810           else
1811             {
1812               alloc = allocations[i];
1813             }
1814
1815           if (alloc.width <= 0 || alloc.height <= 0)
1816             {
1817               toolbar_content_set_child_visible (content, toolbar, FALSE);
1818             }
1819           else
1820             {
1821               if (!rect_within (&alloc, &item_area))
1822                 {
1823                   toolbar_content_set_child_visible (content, toolbar, FALSE);
1824                   toolbar_content_size_allocate (content, &alloc);
1825                 }
1826               else
1827                 {
1828                   toolbar_content_set_child_visible (content, toolbar, TRUE);
1829                   toolbar_content_size_allocate (content, &alloc);
1830                 }
1831             }
1832         }
1833       else
1834         {
1835           toolbar_content_set_child_visible (content, toolbar, FALSE);
1836         }
1837
1838       toolbar_content_set_state (content, new_states[i]);
1839     }
1840
1841   if (priv->menu && priv->need_rebuild)
1842     rebuild_menu (toolbar);
1843
1844   if (need_arrow)
1845     {
1846       gtk_widget_size_allocate (GTK_WIDGET (priv->arrow_button),
1847                                 &arrow_allocation);
1848       gtk_widget_show (GTK_WIDGET (priv->arrow_button));
1849     }
1850   else
1851     {
1852       gtk_widget_hide (GTK_WIDGET (priv->arrow_button));
1853
1854       if (priv->menu && gtk_widget_get_visible (GTK_WIDGET (priv->menu)))
1855         gtk_menu_shell_deactivate (GTK_MENU_SHELL (priv->menu));
1856     }
1857
1858   g_free (allocations);
1859   g_free (new_states);
1860 }
1861
1862 static void
1863 gtk_toolbar_update_button_relief (GtkToolbar *toolbar)
1864 {
1865   GtkToolbarPrivate *priv = toolbar->priv;
1866   GtkReliefStyle relief;
1867
1868   relief = get_button_relief (toolbar);
1869
1870   if (relief != gtk_button_get_relief (GTK_BUTTON (priv->arrow_button)))
1871     {
1872       gtk_toolbar_reconfigured (toolbar);
1873
1874       gtk_button_set_relief (GTK_BUTTON (priv->arrow_button), relief);
1875     }
1876 }
1877
1878 static void
1879 gtk_toolbar_style_updated (GtkWidget *widget)
1880 {
1881   GtkToolbar *toolbar = GTK_TOOLBAR (widget);
1882   GtkToolbarPrivate *priv = toolbar->priv;
1883
1884   GTK_WIDGET_CLASS (gtk_toolbar_parent_class)->style_updated (widget);
1885
1886   priv->max_homogeneous_pixels = -1;
1887
1888   if (gtk_widget_get_realized (widget))
1889     gtk_style_context_set_background (gtk_widget_get_style_context (widget),
1890                                       gtk_widget_get_window (widget));
1891
1892   gtk_toolbar_update_button_relief (GTK_TOOLBAR (widget));
1893 }
1894
1895 static GList *
1896 gtk_toolbar_list_children_in_focus_order (GtkToolbar       *toolbar,
1897                                           GtkDirectionType  dir)
1898 {
1899   GtkToolbarPrivate *priv = toolbar->priv;
1900   GList *result = NULL;
1901   GList *list;
1902   gboolean rtl;
1903
1904   /* generate list of children in reverse logical order */
1905
1906   for (list = priv->content; list != NULL; list = list->next)
1907     {
1908       ToolbarContent *content = list->data;
1909       GtkWidget *widget;
1910
1911       widget = toolbar_content_get_widget (content);
1912
1913       if (widget)
1914         result = g_list_prepend (result, widget);
1915     }
1916
1917   result = g_list_prepend (result, priv->arrow_button);
1918
1919   rtl = (gtk_widget_get_direction (GTK_WIDGET (toolbar)) == GTK_TEXT_DIR_RTL);
1920
1921   /* move in logical order when
1922    *
1923    *    - dir is TAB_FORWARD
1924    *
1925    *    - in RTL mode and moving left or up
1926    *
1927    *    - in LTR mode and moving right or down
1928    */
1929   if (dir == GTK_DIR_TAB_FORWARD                                        ||
1930       (rtl  && (dir == GTK_DIR_UP   || dir == GTK_DIR_LEFT))            ||
1931       (!rtl && (dir == GTK_DIR_DOWN || dir == GTK_DIR_RIGHT)))
1932     {
1933       result = g_list_reverse (result);
1934     }
1935
1936   return result;
1937 }
1938
1939 static gboolean
1940 gtk_toolbar_focus_home_or_end (GtkToolbar *toolbar,
1941                                gboolean    focus_home)
1942 {
1943   GList *children, *list;
1944   GtkDirectionType dir = focus_home? GTK_DIR_RIGHT : GTK_DIR_LEFT;
1945
1946   children = gtk_toolbar_list_children_in_focus_order (toolbar, dir);
1947
1948   if (gtk_widget_get_direction (GTK_WIDGET (toolbar)) == GTK_TEXT_DIR_RTL)
1949     {
1950       children = g_list_reverse (children);
1951
1952       dir = (dir == GTK_DIR_RIGHT)? GTK_DIR_LEFT : GTK_DIR_RIGHT;
1953     }
1954
1955   for (list = children; list != NULL; list = list->next)
1956     {
1957       GtkWidget *child = list->data;
1958
1959       if (gtk_container_get_focus_child (GTK_CONTAINER (toolbar)) == child)
1960         break;
1961
1962       if (gtk_widget_get_mapped (child) && gtk_widget_child_focus (child, dir))
1963         break;
1964     }
1965
1966   g_list_free (children);
1967
1968   return TRUE;
1969 }
1970
1971 /* Keybinding handler. This function is called when the user presses
1972  * Ctrl TAB or an arrow key.
1973  */
1974 static void
1975 gtk_toolbar_move_focus (GtkWidget        *widget,
1976                         GtkDirectionType  dir)
1977 {
1978   GtkToolbar *toolbar = GTK_TOOLBAR (widget);
1979   GtkContainer *container = GTK_CONTAINER (toolbar);
1980   GtkWidget *focus_child;
1981   GList *list;
1982   gboolean try_focus = FALSE;
1983   GList *children;
1984
1985   focus_child = gtk_container_get_focus_child (container);
1986
1987   if (focus_child && gtk_widget_child_focus (focus_child, dir))
1988     return;
1989
1990   children = gtk_toolbar_list_children_in_focus_order (toolbar, dir);
1991
1992   for (list = children; list != NULL; list = list->next)
1993     {
1994       GtkWidget *child = list->data;
1995
1996       if (try_focus && gtk_widget_get_mapped (child) && gtk_widget_child_focus (child, dir))
1997         break;
1998
1999       if (child == focus_child)
2000         try_focus = TRUE;
2001     }
2002
2003   g_list_free (children);
2004 }
2005
2006 /* The focus handler for the toolbar. It called when the user presses
2007  * TAB or otherwise tries to focus the toolbar.
2008  */
2009 static gboolean
2010 gtk_toolbar_focus (GtkWidget        *widget,
2011                    GtkDirectionType  dir)
2012 {
2013   GtkToolbar *toolbar = GTK_TOOLBAR (widget);
2014   GList *children, *list;
2015   gboolean result = FALSE;
2016
2017   /* if focus is already somewhere inside the toolbar then return FALSE.
2018    * The only way focus can stay inside the toolbar is when the user presses
2019    * arrow keys or Ctrl TAB (both of which are handled by the
2020    * gtk_toolbar_move_focus() keybinding function.
2021    */
2022   if (gtk_container_get_focus_child (GTK_CONTAINER (widget)))
2023     return FALSE;
2024
2025   children = gtk_toolbar_list_children_in_focus_order (toolbar, dir);
2026
2027   for (list = children; list != NULL; list = list->next)
2028     {
2029       GtkWidget *child = list->data;
2030
2031       if (gtk_widget_get_mapped (child) && gtk_widget_child_focus (child, dir))
2032         {
2033           result = TRUE;
2034           break;
2035         }
2036     }
2037
2038   g_list_free (children);
2039
2040   return result;
2041 }
2042
2043 static GtkSettings *
2044 toolbar_get_settings (GtkToolbar *toolbar)
2045 {
2046   return toolbar->priv->settings;
2047 }
2048
2049 static void
2050 style_change_notify (GtkToolbar *toolbar)
2051 {
2052   GtkToolbarPrivate *priv = toolbar->priv;
2053
2054   if (!priv->style_set)
2055     {
2056       /* pretend it was set, then unset, thus reverting to new default */
2057       priv->style_set = TRUE;
2058       gtk_toolbar_unset_style (toolbar);
2059     }
2060 }
2061
2062 static void
2063 icon_size_change_notify (GtkToolbar *toolbar)
2064 {
2065   GtkToolbarPrivate *priv = toolbar->priv;
2066
2067   if (!priv->icon_size_set)
2068     {
2069       /* pretend it was set, then unset, thus reverting to new default */
2070       priv->icon_size_set = TRUE;
2071       gtk_toolbar_unset_icon_size (toolbar);
2072     }
2073 }
2074
2075 static void
2076 animation_change_notify (GtkToolbar *toolbar)
2077 {
2078   GtkToolbarPrivate *priv = toolbar->priv;
2079   GtkSettings *settings = toolbar_get_settings (toolbar);
2080   gboolean animation;
2081
2082   if (settings)
2083     g_object_get (settings,
2084                   "gtk-enable-animations", &animation,
2085                   NULL);
2086   else
2087     animation = DEFAULT_ANIMATION_STATE;
2088
2089   priv->animation = animation;
2090 }
2091
2092 static void
2093 settings_change_notify (GtkSettings      *settings,
2094                         const GParamSpec *pspec,
2095                         GtkToolbar       *toolbar)
2096 {
2097   if (! strcmp (pspec->name, "gtk-toolbar-style"))
2098     style_change_notify (toolbar);
2099   else if (! strcmp (pspec->name, "gtk-toolbar-icon-size"))
2100     icon_size_change_notify (toolbar);
2101   else if (! strcmp (pspec->name, "gtk-enable-animations"))
2102     animation_change_notify (toolbar);
2103 }
2104
2105 static void
2106 gtk_toolbar_screen_changed (GtkWidget *widget,
2107                             GdkScreen *previous_screen)
2108 {
2109   GtkToolbar *toolbar = GTK_TOOLBAR (widget);
2110   GtkToolbarPrivate *priv = toolbar->priv;
2111   GtkSettings *old_settings = toolbar_get_settings (toolbar);
2112   GtkSettings *settings;
2113
2114   if (gtk_widget_has_screen (GTK_WIDGET (toolbar)))
2115     settings = gtk_widget_get_settings (GTK_WIDGET (toolbar));
2116   else
2117     settings = NULL;
2118
2119   if (settings == old_settings)
2120     return;
2121
2122   if (old_settings)
2123     {
2124       g_signal_handler_disconnect (old_settings, priv->settings_connection);
2125
2126       g_object_unref (old_settings);
2127     }
2128
2129   if (settings)
2130     {
2131       priv->settings_connection =
2132         g_signal_connect (settings, "notify",
2133                           G_CALLBACK (settings_change_notify),
2134                           toolbar);
2135
2136       priv->settings = g_object_ref (settings);
2137     }
2138   else
2139     priv->settings = NULL;
2140
2141   style_change_notify (toolbar);
2142   icon_size_change_notify (toolbar);
2143   animation_change_notify (toolbar);
2144 }
2145
2146 static int
2147 find_drop_index (GtkToolbar *toolbar,
2148                  gint        x,
2149                  gint        y)
2150 {
2151   GtkToolbarPrivate *priv = toolbar->priv;
2152   GList *interesting_content;
2153   GList *list;
2154   GtkOrientation orientation;
2155   GtkTextDirection direction;
2156   gint best_distance = G_MAXINT;
2157   gint distance;
2158   gint cursor;
2159   gint pos;
2160   ToolbarContent *best_content;
2161   GtkAllocation allocation;
2162
2163   /* list items we care about wrt. drag and drop */
2164   interesting_content = NULL;
2165   for (list = priv->content; list != NULL; list = list->next)
2166     {
2167       ToolbarContent *content = list->data;
2168
2169       if (toolbar_content_get_state (content) == NORMAL)
2170         interesting_content = g_list_prepend (interesting_content, content);
2171     }
2172   interesting_content = g_list_reverse (interesting_content);
2173
2174   if (!interesting_content)
2175     return 0;
2176
2177   orientation = priv->orientation;
2178   direction = gtk_widget_get_direction (GTK_WIDGET (toolbar));
2179
2180   /* distance to first interesting item */
2181   best_content = interesting_content->data;
2182   toolbar_content_get_allocation (best_content, &allocation);
2183
2184   if (orientation == GTK_ORIENTATION_HORIZONTAL)
2185     {
2186       cursor = x;
2187
2188       if (direction == GTK_TEXT_DIR_LTR)
2189         pos = allocation.x;
2190       else
2191         pos = allocation.x + allocation.width;
2192     }
2193   else
2194     {
2195       cursor = y;
2196       pos = allocation.y;
2197     }
2198
2199   best_content = NULL;
2200   best_distance = ABS (pos - cursor);
2201
2202   /* distance to far end of each item */
2203   for (list = interesting_content; list != NULL; list = list->next)
2204     {
2205       ToolbarContent *content = list->data;
2206
2207       toolbar_content_get_allocation (content, &allocation);
2208
2209       if (orientation == GTK_ORIENTATION_HORIZONTAL)
2210         {
2211           if (direction == GTK_TEXT_DIR_LTR)
2212             pos = allocation.x + allocation.width;
2213           else
2214             pos = allocation.x;
2215         }
2216       else
2217         {
2218           pos = allocation.y + allocation.height;
2219         }
2220
2221       distance = ABS (pos - cursor);
2222
2223       if (distance < best_distance)
2224         {
2225           best_distance = distance;
2226           best_content = content;
2227         }
2228     }
2229
2230   g_list_free (interesting_content);
2231
2232   if (!best_content)
2233     return 0;
2234   else
2235     return g_list_index (priv->content, best_content) + 1;
2236 }
2237
2238 static void
2239 reset_all_placeholders (GtkToolbar *toolbar)
2240 {
2241   GtkToolbarPrivate *priv = toolbar->priv;
2242   GList *list;
2243
2244   for (list = priv->content; list != NULL; list = list->next)
2245     {
2246       ToolbarContent *content = list->data;
2247       if (toolbar_content_is_placeholder (content))
2248         toolbar_content_set_disappearing (content, TRUE);
2249     }
2250 }
2251
2252 static gint
2253 physical_to_logical (GtkToolbar *toolbar,
2254                      gint        physical)
2255 {
2256   GtkToolbarPrivate *priv = toolbar->priv;
2257   GList *list;
2258   int logical;
2259
2260   g_assert (physical >= 0);
2261
2262   logical = 0;
2263   for (list = priv->content; list && physical > 0; list = list->next)
2264     {
2265       ToolbarContent *content = list->data;
2266
2267       if (!toolbar_content_is_placeholder (content))
2268         logical++;
2269       physical--;
2270     }
2271
2272   g_assert (physical == 0);
2273
2274   return logical;
2275 }
2276
2277 static gint
2278 logical_to_physical (GtkToolbar *toolbar,
2279                      gint        logical)
2280 {
2281   GtkToolbarPrivate *priv = toolbar->priv;
2282   GList *list;
2283   gint physical;
2284
2285   g_assert (logical >= 0);
2286
2287   physical = 0;
2288   for (list = priv->content; list; list = list->next)
2289     {
2290       ToolbarContent *content = list->data;
2291
2292       if (!toolbar_content_is_placeholder (content))
2293         {
2294           if (logical == 0)
2295             break;
2296           logical--;
2297         }
2298
2299       physical++;
2300     }
2301
2302   g_assert (logical == 0);
2303
2304   return physical;
2305 }
2306
2307 /**
2308  * gtk_toolbar_set_drop_highlight_item:
2309  * @toolbar: a #GtkToolbar
2310  * @tool_item: (allow-none): a #GtkToolItem, or %NULL to turn of highlighting
2311  * @index_: a position on @toolbar
2312  *
2313  * Highlights @toolbar to give an idea of what it would look like
2314  * if @item was added to @toolbar at the position indicated by @index_.
2315  * If @item is %NULL, highlighting is turned off. In that case @index_
2316  * is ignored.
2317  *
2318  * The @tool_item passed to this function must not be part of any widget
2319  * hierarchy. When an item is set as drop highlight item it can not
2320  * added to any widget hierarchy or used as highlight item for another
2321  * toolbar.
2322  *
2323  * Since: 2.4
2324  **/
2325 void
2326 gtk_toolbar_set_drop_highlight_item (GtkToolbar  *toolbar,
2327                                      GtkToolItem *tool_item,
2328                                      gint         index_)
2329 {
2330   ToolbarContent *content;
2331   GtkToolbarPrivate *priv;
2332   gint n_items;
2333   GtkRequisition requisition;
2334   GtkRequisition old_requisition;
2335   gboolean restart_sliding;
2336
2337   g_return_if_fail (GTK_IS_TOOLBAR (toolbar));
2338   g_return_if_fail (tool_item == NULL || GTK_IS_TOOL_ITEM (tool_item));
2339
2340   priv = toolbar->priv;
2341
2342   if (!tool_item)
2343     {
2344       if (priv->highlight_tool_item)
2345         {
2346           gtk_widget_unparent (GTK_WIDGET (priv->highlight_tool_item));
2347           g_object_unref (priv->highlight_tool_item);
2348           priv->highlight_tool_item = NULL;
2349         }
2350
2351       reset_all_placeholders (toolbar);
2352       gtk_toolbar_begin_sliding (toolbar);
2353       return;
2354     }
2355
2356   n_items = gtk_toolbar_get_n_items (toolbar);
2357   if (index_ < 0 || index_ > n_items)
2358     index_ = n_items;
2359
2360   if (tool_item != priv->highlight_tool_item)
2361     {
2362       if (priv->highlight_tool_item)
2363         g_object_unref (priv->highlight_tool_item);
2364
2365       g_object_ref_sink (tool_item);
2366
2367       priv->highlight_tool_item = tool_item;
2368
2369       gtk_widget_set_parent (GTK_WIDGET (priv->highlight_tool_item),
2370                              GTK_WIDGET (toolbar));
2371     }
2372
2373   index_ = logical_to_physical (toolbar, index_);
2374
2375   content = g_list_nth_data (priv->content, index_);
2376
2377   if (index_ > 0)
2378     {
2379       ToolbarContent *prev_content;
2380
2381       prev_content = g_list_nth_data (priv->content, index_ - 1);
2382
2383       if (prev_content && toolbar_content_is_placeholder (prev_content))
2384         content = prev_content;
2385     }
2386
2387   if (!content || !toolbar_content_is_placeholder (content))
2388     {
2389       GtkWidget *placeholder;
2390
2391       placeholder = GTK_WIDGET (gtk_separator_tool_item_new ());
2392
2393       content = toolbar_content_new_tool_item (toolbar,
2394                                                GTK_TOOL_ITEM (placeholder),
2395                                                TRUE, index_);
2396       gtk_widget_show (placeholder);
2397     }
2398
2399   g_assert (content);
2400   g_assert (toolbar_content_is_placeholder (content));
2401
2402   gtk_widget_get_preferred_size (GTK_WIDGET (priv->highlight_tool_item),
2403                                  &requisition, NULL);
2404
2405   toolbar_content_set_expand (content, gtk_tool_item_get_expand (tool_item));
2406
2407   restart_sliding = FALSE;
2408   toolbar_content_size_request (content, toolbar, &old_requisition);
2409   if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
2410     {
2411       requisition.height = -1;
2412       if (requisition.width != old_requisition.width)
2413         restart_sliding = TRUE;
2414     }
2415   else
2416     {
2417       requisition.width = -1;
2418       if (requisition.height != old_requisition.height)
2419         restart_sliding = TRUE;
2420     }
2421
2422   if (toolbar_content_disappearing (content))
2423     restart_sliding = TRUE;
2424
2425   reset_all_placeholders (toolbar);
2426   toolbar_content_set_disappearing (content, FALSE);
2427
2428   toolbar_content_set_size_request (content,
2429                                     requisition.width, requisition.height);
2430
2431   if (restart_sliding)
2432     gtk_toolbar_begin_sliding (toolbar);
2433 }
2434
2435 static void
2436 gtk_toolbar_get_child_property (GtkContainer *container,
2437                                 GtkWidget    *child,
2438                                 guint         property_id,
2439                                 GValue       *value,
2440                                 GParamSpec   *pspec)
2441 {
2442   GtkToolItem *item = GTK_TOOL_ITEM (child);
2443
2444   switch (property_id)
2445     {
2446     case CHILD_PROP_HOMOGENEOUS:
2447       g_value_set_boolean (value, gtk_tool_item_get_homogeneous (item));
2448       break;
2449
2450     case CHILD_PROP_EXPAND:
2451       g_value_set_boolean (value, gtk_tool_item_get_expand (item));
2452       break;
2453
2454     default:
2455       GTK_CONTAINER_WARN_INVALID_CHILD_PROPERTY_ID (container, property_id, pspec);
2456       break;
2457     }
2458 }
2459
2460 static void
2461 gtk_toolbar_set_child_property (GtkContainer *container,
2462                                 GtkWidget    *child,
2463                                 guint         property_id,
2464                                 const GValue *value,
2465                                 GParamSpec   *pspec)
2466 {
2467   switch (property_id)
2468     {
2469     case CHILD_PROP_HOMOGENEOUS:
2470       gtk_tool_item_set_homogeneous (GTK_TOOL_ITEM (child), g_value_get_boolean (value));
2471       break;
2472
2473     case CHILD_PROP_EXPAND:
2474       gtk_tool_item_set_expand (GTK_TOOL_ITEM (child), g_value_get_boolean (value));
2475       break;
2476
2477     default:
2478       GTK_CONTAINER_WARN_INVALID_CHILD_PROPERTY_ID (container, property_id, pspec);
2479       break;
2480     }
2481 }
2482
2483 static void
2484 gtk_toolbar_show_all (GtkWidget *widget)
2485 {
2486   GtkToolbar *toolbar = GTK_TOOLBAR (widget);
2487   GtkToolbarPrivate *priv = toolbar->priv;
2488   GList *list;
2489
2490   for (list = priv->content; list != NULL; list = list->next)
2491     {
2492       ToolbarContent *content = list->data;
2493
2494       toolbar_content_show_all (content);
2495     }
2496
2497   gtk_widget_show (widget);
2498 }
2499
2500 static void
2501 gtk_toolbar_add (GtkContainer *container,
2502                  GtkWidget    *widget)
2503 {
2504   GtkToolbar *toolbar = GTK_TOOLBAR (container);
2505
2506   gtk_toolbar_insert (toolbar, GTK_TOOL_ITEM (widget), -1);
2507 }
2508
2509 static void
2510 gtk_toolbar_remove (GtkContainer *container,
2511                     GtkWidget    *widget)
2512 {
2513   GtkToolbar *toolbar = GTK_TOOLBAR (container);
2514   GtkToolbarPrivate *priv = toolbar->priv;
2515   ToolbarContent *content_to_remove;
2516   GList *list;
2517
2518   content_to_remove = NULL;
2519   for (list = priv->content; list != NULL; list = list->next)
2520     {
2521       ToolbarContent *content = list->data;
2522       GtkWidget *child;
2523
2524       child = toolbar_content_get_widget (content);
2525       if (child && child == widget)
2526         {
2527           content_to_remove = content;
2528           break;
2529         }
2530     }
2531
2532   g_return_if_fail (content_to_remove != NULL);
2533
2534   toolbar_content_remove (content_to_remove, toolbar);
2535   toolbar_content_free (content_to_remove);
2536 }
2537
2538 static void
2539 gtk_toolbar_forall (GtkContainer *container,
2540                     gboolean      include_internals,
2541                     GtkCallback   callback,
2542                     gpointer      callback_data)
2543 {
2544   GtkToolbar *toolbar = GTK_TOOLBAR (container);
2545   GtkToolbarPrivate *priv = toolbar->priv;
2546   GList *list;
2547
2548   g_return_if_fail (callback != NULL);
2549
2550   list = priv->content;
2551   while (list)
2552     {
2553       ToolbarContent *content = list->data;
2554       GList *next = list->next;
2555
2556       if (include_internals || !toolbar_content_is_placeholder (content))
2557         {
2558           GtkWidget *child = toolbar_content_get_widget (content);
2559
2560           if (child)
2561             callback (child, callback_data);
2562         }
2563
2564       list = next;
2565     }
2566
2567   if (include_internals && priv->arrow_button)
2568     callback (priv->arrow_button, callback_data);
2569 }
2570
2571 static GType
2572 gtk_toolbar_child_type (GtkContainer *container)
2573 {
2574   return GTK_TYPE_TOOL_ITEM;
2575 }
2576
2577 static void
2578 gtk_toolbar_reconfigured (GtkToolbar *toolbar)
2579 {
2580   GtkToolbarPrivate *priv = toolbar->priv;
2581   GList *list;
2582
2583   list = priv->content;
2584   while (list)
2585     {
2586       ToolbarContent *content = list->data;
2587       GList *next = list->next;
2588
2589       toolbar_content_toolbar_reconfigured (content, toolbar);
2590
2591       list = next;
2592     }
2593 }
2594
2595 static void
2596 gtk_toolbar_orientation_changed (GtkToolbar    *toolbar,
2597                                  GtkOrientation orientation)
2598 {
2599   GtkToolbarPrivate *priv = toolbar->priv;
2600
2601   if (priv->orientation != orientation)
2602     {
2603       priv->orientation = orientation;
2604
2605       if (orientation == GTK_ORIENTATION_HORIZONTAL)
2606         gtk_arrow_set (GTK_ARROW (priv->arrow), GTK_ARROW_DOWN, GTK_SHADOW_NONE);
2607       else
2608         gtk_arrow_set (GTK_ARROW (priv->arrow), GTK_ARROW_RIGHT, GTK_SHADOW_NONE);
2609
2610       gtk_toolbar_reconfigured (toolbar);
2611
2612       gtk_widget_queue_resize (GTK_WIDGET (toolbar));
2613       g_object_notify (G_OBJECT (toolbar), "orientation");
2614     }
2615 }
2616
2617 static void
2618 gtk_toolbar_real_style_changed (GtkToolbar     *toolbar,
2619                                 GtkToolbarStyle style)
2620 {
2621   GtkToolbarPrivate *priv = toolbar->priv;
2622
2623   if (priv->style != style)
2624     {
2625       priv->style = style;
2626
2627       gtk_toolbar_reconfigured (toolbar);
2628
2629       gtk_widget_queue_resize (GTK_WIDGET (toolbar));
2630       g_object_notify (G_OBJECT (toolbar), "toolbar-style");
2631     }
2632 }
2633
2634 static void
2635 menu_position_func (GtkMenu  *menu,
2636                     gint     *x,
2637                     gint     *y,
2638                     gboolean *push_in,
2639                     gpointer  user_data)
2640 {
2641   GtkAllocation allocation;
2642   GtkToolbar *toolbar = GTK_TOOLBAR (user_data);
2643   GtkToolbarPrivate *priv = toolbar->priv;
2644   GtkRequisition req;
2645   GtkRequisition menu_req;
2646   GdkRectangle monitor;
2647   gint monitor_num;
2648   GdkScreen *screen;
2649
2650   gtk_widget_get_preferred_size (priv->arrow_button,
2651                                  &req, NULL);
2652   gtk_widget_get_preferred_size (GTK_WIDGET (menu),
2653                                  &menu_req, NULL);
2654
2655   screen = gtk_widget_get_screen (GTK_WIDGET (menu));
2656   monitor_num = gdk_screen_get_monitor_at_window (screen,
2657                                                   gtk_widget_get_window (priv->arrow_button));
2658   if (monitor_num < 0)
2659     monitor_num = 0;
2660   gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
2661
2662   gtk_widget_get_allocation (priv->arrow_button, &allocation);
2663
2664   gdk_window_get_origin (gtk_button_get_event_window (GTK_BUTTON (priv->arrow_button)), x, y);
2665   if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
2666     {
2667       if (gtk_widget_get_direction (GTK_WIDGET (toolbar)) == GTK_TEXT_DIR_LTR)
2668         *x += allocation.width - req.width;
2669       else
2670         *x += req.width - menu_req.width;
2671
2672       if ((*y + allocation.height + menu_req.height) <= monitor.y + monitor.height)
2673         *y += allocation.height;
2674       else if ((*y - menu_req.height) >= monitor.y)
2675         *y -= menu_req.height;
2676       else if (monitor.y + monitor.height - (*y + allocation.height) > *y)
2677         *y += allocation.height;
2678       else
2679         *y -= menu_req.height;
2680     }
2681   else
2682     {
2683       if (gtk_widget_get_direction (GTK_WIDGET (toolbar)) == GTK_TEXT_DIR_LTR)
2684         *x += allocation.width;
2685       else
2686         *x -= menu_req.width;
2687
2688       if (*y + menu_req.height > monitor.y + monitor.height &&
2689           *y + allocation.height - monitor.y > monitor.y + monitor.height - *y)
2690         *y += allocation.height - menu_req.height;
2691     }
2692
2693   *push_in = FALSE;
2694 }
2695
2696 static void
2697 show_menu (GtkToolbar     *toolbar,
2698            GdkEventButton *event)
2699 {
2700   GtkToolbarPrivate *priv = toolbar->priv;
2701
2702   rebuild_menu (toolbar);
2703
2704   gtk_widget_show_all (GTK_WIDGET (priv->menu));
2705
2706   gtk_menu_popup (priv->menu, NULL, NULL,
2707                   menu_position_func, toolbar,
2708                   event? event->button : 0,
2709                   event? event->time : gtk_get_current_event_time());
2710 }
2711
2712 static void
2713 gtk_toolbar_arrow_button_clicked (GtkWidget  *button,
2714                                   GtkToolbar *toolbar)
2715 {
2716   GtkToolbarPrivate *priv = toolbar->priv;
2717
2718   if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->arrow_button)) &&
2719       (!priv->menu || !gtk_widget_get_visible (GTK_WIDGET (priv->menu))))
2720     {
2721       /* We only get here when the button is clicked with the keyboard,
2722        * because mouse button presses result in the menu being shown so
2723        * that priv->menu would be non-NULL and visible.
2724        */
2725       show_menu (toolbar, NULL);
2726       gtk_menu_shell_select_first (GTK_MENU_SHELL (priv->menu), FALSE);
2727     }
2728 }
2729
2730 static gboolean
2731 gtk_toolbar_arrow_button_press (GtkWidget      *button,
2732                                 GdkEventButton *event,
2733                                 GtkToolbar     *toolbar)
2734 {
2735   show_menu (toolbar, event);
2736   gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button), TRUE);
2737
2738   return TRUE;
2739 }
2740
2741 static gboolean
2742 gtk_toolbar_button_press (GtkWidget      *toolbar,
2743                           GdkEventButton *event)
2744 {
2745   GtkWidget *window;
2746
2747   if (_gtk_button_event_triggers_context_menu (event))
2748     {
2749       gboolean return_value;
2750
2751       g_signal_emit (toolbar, toolbar_signals[POPUP_CONTEXT_MENU], 0,
2752                      (int)event->x_root, (int)event->y_root, event->button,
2753                      &return_value);
2754
2755       return return_value;
2756     }
2757
2758   window = gtk_widget_get_toplevel (toolbar);
2759
2760   if (window)
2761     {
2762       gboolean window_drag = FALSE;
2763
2764       gtk_widget_style_get (toolbar,
2765                             "window-dragging", &window_drag,
2766                             NULL);
2767
2768       if (window_drag)
2769         {
2770           gtk_window_begin_move_drag (GTK_WINDOW (window),
2771                                       event->button,
2772                                       event->x_root,
2773                                       event->y_root,
2774                                       event->time);
2775
2776           return TRUE;
2777         }
2778     }
2779
2780   return FALSE;
2781 }
2782
2783 static gboolean
2784 gtk_toolbar_popup_menu (GtkWidget *toolbar)
2785 {
2786   gboolean return_value;
2787   /* This function is the handler for the "popup menu" keybinding,
2788    * ie., it is called when the user presses Shift F10
2789    */
2790   g_signal_emit (toolbar, toolbar_signals[POPUP_CONTEXT_MENU], 0,
2791                  -1, -1, -1, &return_value);
2792
2793   return return_value;
2794 }
2795
2796 /**
2797  * gtk_toolbar_new:
2798  *
2799  * Creates a new toolbar.
2800
2801  * Return Value: the newly-created toolbar.
2802  **/
2803 GtkWidget *
2804 gtk_toolbar_new (void)
2805 {
2806   GtkToolbar *toolbar;
2807
2808   toolbar = g_object_new (GTK_TYPE_TOOLBAR, NULL);
2809
2810   return GTK_WIDGET (toolbar);
2811 }
2812
2813 /**
2814  * gtk_toolbar_insert:
2815  * @toolbar: a #GtkToolbar
2816  * @item: a #GtkToolItem
2817  * @pos: the position of the new item
2818  *
2819  * Insert a #GtkToolItem into the toolbar at position @pos. If @pos is
2820  * 0 the item is prepended to the start of the toolbar. If @pos is
2821  * negative, the item is appended to the end of the toolbar.
2822  *
2823  * Since: 2.4
2824  **/
2825 void
2826 gtk_toolbar_insert (GtkToolbar  *toolbar,
2827                     GtkToolItem *item,
2828                     gint         pos)
2829 {
2830   g_return_if_fail (GTK_IS_TOOLBAR (toolbar));
2831   g_return_if_fail (GTK_IS_TOOL_ITEM (item));
2832
2833   if (pos >= 0)
2834     pos = logical_to_physical (toolbar, pos);
2835
2836   toolbar_content_new_tool_item (toolbar, item, FALSE, pos);
2837 }
2838
2839 /**
2840  * gtk_toolbar_get_item_index:
2841  * @toolbar: a #GtkToolbar
2842  * @item: a #GtkToolItem that is a child of @toolbar
2843  *
2844  * Returns the position of @item on the toolbar, starting from 0.
2845  * It is an error if @item is not a child of the toolbar.
2846  *
2847  * Return value: the position of item on the toolbar.
2848  *
2849  * Since: 2.4
2850  **/
2851 gint
2852 gtk_toolbar_get_item_index (GtkToolbar  *toolbar,
2853                             GtkToolItem *item)
2854 {
2855   GtkToolbarPrivate *priv;
2856   GList *list;
2857   int n;
2858
2859   g_return_val_if_fail (GTK_IS_TOOLBAR (toolbar), -1);
2860   g_return_val_if_fail (GTK_IS_TOOL_ITEM (item), -1);
2861   g_return_val_if_fail (gtk_widget_get_parent (GTK_WIDGET (item)) == GTK_WIDGET (toolbar), -1);
2862
2863   priv = toolbar->priv;
2864
2865   n = 0;
2866   for (list = priv->content; list != NULL; list = list->next)
2867     {
2868       ToolbarContent *content = list->data;
2869       GtkWidget *widget;
2870
2871       widget = toolbar_content_get_widget (content);
2872
2873       if (item == GTK_TOOL_ITEM (widget))
2874         break;
2875
2876       ++n;
2877     }
2878
2879   return physical_to_logical (toolbar, n);
2880 }
2881
2882 /**
2883  * gtk_toolbar_set_style:
2884  * @toolbar: a #GtkToolbar.
2885  * @style: the new style for @toolbar.
2886  *
2887  * Alters the view of @toolbar to display either icons only, text only, or both.
2888  **/
2889 void
2890 gtk_toolbar_set_style (GtkToolbar      *toolbar,
2891                        GtkToolbarStyle  style)
2892 {
2893   GtkToolbarPrivate *priv;
2894
2895   g_return_if_fail (GTK_IS_TOOLBAR (toolbar));
2896
2897   priv = toolbar->priv;
2898
2899   priv->style_set = TRUE;
2900   g_signal_emit (toolbar, toolbar_signals[STYLE_CHANGED], 0, style);
2901 }
2902
2903 /**
2904  * gtk_toolbar_get_style:
2905  * @toolbar: a #GtkToolbar
2906  *
2907  * Retrieves whether the toolbar has text, icons, or both . See
2908  * gtk_toolbar_set_style().
2909
2910  * Return value: the current style of @toolbar
2911  **/
2912 GtkToolbarStyle
2913 gtk_toolbar_get_style (GtkToolbar *toolbar)
2914 {
2915   g_return_val_if_fail (GTK_IS_TOOLBAR (toolbar), DEFAULT_TOOLBAR_STYLE);
2916
2917   return toolbar->priv->style;
2918 }
2919
2920 /**
2921  * gtk_toolbar_unset_style:
2922  * @toolbar: a #GtkToolbar
2923  *
2924  * Unsets a toolbar style set with gtk_toolbar_set_style(), so that
2925  * user preferences will be used to determine the toolbar style.
2926  **/
2927 void
2928 gtk_toolbar_unset_style (GtkToolbar *toolbar)
2929 {
2930   GtkToolbarPrivate *priv;
2931   GtkToolbarStyle style;
2932
2933   g_return_if_fail (GTK_IS_TOOLBAR (toolbar));
2934
2935   priv = toolbar->priv;
2936
2937   if (priv->style_set)
2938     {
2939       GtkSettings *settings = toolbar_get_settings (toolbar);
2940
2941       if (settings)
2942         g_object_get (settings,
2943                       "gtk-toolbar-style", &style,
2944                       NULL);
2945       else
2946         style = DEFAULT_TOOLBAR_STYLE;
2947
2948       if (style != priv->style)
2949         g_signal_emit (toolbar, toolbar_signals[STYLE_CHANGED], 0, style);
2950
2951       priv->style_set = FALSE;
2952     }
2953 }
2954
2955 /**
2956  * gtk_toolbar_get_n_items:
2957  * @toolbar: a #GtkToolbar
2958  *
2959  * Returns the number of items on the toolbar.
2960  *
2961  * Return value: the number of items on the toolbar
2962  *
2963  * Since: 2.4
2964  **/
2965 gint
2966 gtk_toolbar_get_n_items (GtkToolbar *toolbar)
2967 {
2968   GtkToolbarPrivate *priv;
2969
2970   g_return_val_if_fail (GTK_IS_TOOLBAR (toolbar), -1);
2971
2972   priv = toolbar->priv;
2973
2974   return physical_to_logical (toolbar, g_list_length (priv->content));
2975 }
2976
2977 /**
2978  * gtk_toolbar_get_nth_item:
2979  * @toolbar: a #GtkToolbar
2980  * @n: A position on the toolbar
2981  *
2982  * Returns the @n<!-- -->'th item on @toolbar, or %NULL if the
2983  * toolbar does not contain an @n<!-- -->'th item.
2984  *
2985  * Return value: (transfer none): The @n<!-- -->'th #GtkToolItem on @toolbar,
2986  *     or %NULL if there isn't an @n<!-- -->'th item.
2987  *
2988  * Since: 2.4
2989  **/
2990 GtkToolItem *
2991 gtk_toolbar_get_nth_item (GtkToolbar *toolbar,
2992                           gint        n)
2993 {
2994   GtkToolbarPrivate *priv;
2995   ToolbarContent *content;
2996   gint n_items;
2997
2998   g_return_val_if_fail (GTK_IS_TOOLBAR (toolbar), NULL);
2999
3000   priv = toolbar->priv;
3001
3002   n_items = gtk_toolbar_get_n_items (toolbar);
3003
3004   if (n < 0 || n >= n_items)
3005     return NULL;
3006
3007   content = g_list_nth_data (priv->content, logical_to_physical (toolbar, n));
3008
3009   g_assert (content);
3010   g_assert (!toolbar_content_is_placeholder (content));
3011
3012   return GTK_TOOL_ITEM (toolbar_content_get_widget (content));
3013 }
3014
3015 /**
3016  * gtk_toolbar_get_icon_size:
3017  * @toolbar: a #GtkToolbar
3018  *
3019  * Retrieves the icon size for the toolbar. See gtk_toolbar_set_icon_size().
3020  *
3021  * Return value: (type int): the current icon size for the icons on
3022  * the toolbar.
3023  **/
3024 GtkIconSize
3025 gtk_toolbar_get_icon_size (GtkToolbar *toolbar)
3026 {
3027   g_return_val_if_fail (GTK_IS_TOOLBAR (toolbar), DEFAULT_ICON_SIZE);
3028
3029   return toolbar->priv->icon_size;
3030 }
3031
3032 /**
3033  * gtk_toolbar_get_relief_style:
3034  * @toolbar: a #GtkToolbar
3035  *
3036  * Returns the relief style of buttons on @toolbar. See
3037  * gtk_button_set_relief().
3038  *
3039  * Return value: The relief style of buttons on @toolbar.
3040  *
3041  * Since: 2.4
3042  **/
3043 GtkReliefStyle
3044 gtk_toolbar_get_relief_style (GtkToolbar *toolbar)
3045 {
3046   g_return_val_if_fail (GTK_IS_TOOLBAR (toolbar), GTK_RELIEF_NONE);
3047
3048   return get_button_relief (toolbar);
3049 }
3050
3051 /**
3052  * gtk_toolbar_set_show_arrow:
3053  * @toolbar: a #GtkToolbar
3054  * @show_arrow: Whether to show an overflow menu
3055  *
3056  * Sets whether to show an overflow menu when
3057  * @toolbar doesn't have room for all items on it. If %TRUE,
3058  * items that there are not room are available through an
3059  * overflow menu.
3060  *
3061  * Since: 2.4
3062  **/
3063 void
3064 gtk_toolbar_set_show_arrow (GtkToolbar *toolbar,
3065                             gboolean    show_arrow)
3066 {
3067   GtkToolbarPrivate *priv;
3068
3069   g_return_if_fail (GTK_IS_TOOLBAR (toolbar));
3070
3071   priv = toolbar->priv;
3072
3073   show_arrow = show_arrow != FALSE;
3074
3075   if (priv->show_arrow != show_arrow)
3076     {
3077       priv->show_arrow = show_arrow;
3078
3079       if (!priv->show_arrow)
3080         gtk_widget_hide (priv->arrow_button);
3081
3082       gtk_widget_queue_resize (GTK_WIDGET (toolbar));
3083       g_object_notify (G_OBJECT (toolbar), "show-arrow");
3084     }
3085 }
3086
3087 /**
3088  * gtk_toolbar_get_show_arrow:
3089  * @toolbar: a #GtkToolbar
3090  *
3091  * Returns whether the toolbar has an overflow menu.
3092  * See gtk_toolbar_set_show_arrow().
3093  *
3094  * Return value: %TRUE if the toolbar has an overflow menu.
3095  *
3096  * Since: 2.4
3097  **/
3098 gboolean
3099 gtk_toolbar_get_show_arrow (GtkToolbar *toolbar)
3100 {
3101   g_return_val_if_fail (GTK_IS_TOOLBAR (toolbar), FALSE);
3102
3103   return toolbar->priv->show_arrow;
3104 }
3105
3106 /**
3107  * gtk_toolbar_get_drop_index:
3108  * @toolbar: a #GtkToolbar
3109  * @x: x coordinate of a point on the toolbar
3110  * @y: y coordinate of a point on the toolbar
3111  *
3112  * Returns the position corresponding to the indicated point on
3113  * @toolbar. This is useful when dragging items to the toolbar:
3114  * this function returns the position a new item should be
3115  * inserted.
3116  *
3117  * @x and @y are in @toolbar coordinates.
3118  *
3119  * Return value: The position corresponding to the point (@x, @y) on the toolbar.
3120  *
3121  * Since: 2.4
3122  **/
3123 gint
3124 gtk_toolbar_get_drop_index (GtkToolbar *toolbar,
3125                             gint        x,
3126                             gint        y)
3127 {
3128   g_return_val_if_fail (GTK_IS_TOOLBAR (toolbar), -1);
3129
3130   return physical_to_logical (toolbar, find_drop_index (toolbar, x, y));
3131 }
3132
3133 static void
3134 gtk_toolbar_dispose (GObject *object)
3135 {
3136   GtkToolbar *toolbar = GTK_TOOLBAR (object);
3137   GtkToolbarPrivate *priv = toolbar->priv;
3138
3139   if (priv->arrow_button)
3140     {
3141       gtk_widget_unparent (priv->arrow_button);
3142       priv->arrow_button = NULL;
3143     }
3144
3145   if (priv->menu)
3146     {
3147       g_signal_handlers_disconnect_by_func (priv->menu,
3148                                             menu_deactivated, toolbar);
3149       gtk_widget_destroy (GTK_WIDGET (priv->menu));
3150       priv->menu = NULL;
3151     }
3152
3153  G_OBJECT_CLASS (gtk_toolbar_parent_class)->dispose (object);
3154 }
3155
3156 static void
3157 gtk_toolbar_finalize (GObject *object)
3158 {
3159   GtkToolbar *toolbar = GTK_TOOLBAR (object);
3160   GtkToolbarPrivate *priv = toolbar->priv;
3161
3162   if (priv->sibling_path != NULL)
3163     gtk_widget_path_unref (priv->sibling_path);
3164
3165   g_list_free_full (priv->content, (GDestroyNotify)toolbar_content_free);
3166
3167   g_timer_destroy (priv->timer);
3168
3169   if (priv->idle_id)
3170     g_source_remove (priv->idle_id);
3171
3172   G_OBJECT_CLASS (gtk_toolbar_parent_class)->finalize (object);
3173 }
3174
3175 /**
3176  * gtk_toolbar_set_icon_size:
3177  * @toolbar: A #GtkToolbar
3178  * @icon_size: (type int): The #GtkIconSize that stock icons in the
3179  *     toolbar shall have.
3180  *
3181  * This function sets the size of stock icons in the toolbar. You
3182  * can call it both before you add the icons and after they've been
3183  * added. The size you set will override user preferences for the default
3184  * icon size.
3185  *
3186  * This should only be used for special-purpose toolbars, normal
3187  * application toolbars should respect the user preferences for the
3188  * size of icons.
3189  **/
3190 void
3191 gtk_toolbar_set_icon_size (GtkToolbar  *toolbar,
3192                            GtkIconSize  icon_size)
3193 {
3194   GtkToolbarPrivate *priv;
3195
3196   g_return_if_fail (GTK_IS_TOOLBAR (toolbar));
3197   g_return_if_fail (icon_size != GTK_ICON_SIZE_INVALID);
3198
3199   priv = toolbar->priv;
3200
3201   if (!priv->icon_size_set)
3202     {
3203       priv->icon_size_set = TRUE;
3204       g_object_notify (G_OBJECT (toolbar), "icon-size-set");
3205     }
3206
3207   if (priv->icon_size == icon_size)
3208     return;
3209
3210   priv->icon_size = icon_size;
3211   g_object_notify (G_OBJECT (toolbar), "icon-size");
3212
3213   gtk_toolbar_reconfigured (toolbar);
3214
3215   gtk_widget_queue_resize (GTK_WIDGET (toolbar));
3216 }
3217
3218 /**
3219  * gtk_toolbar_unset_icon_size:
3220  * @toolbar: a #GtkToolbar
3221  *
3222  * Unsets toolbar icon size set with gtk_toolbar_set_icon_size(), so that
3223  * user preferences will be used to determine the icon size.
3224  **/
3225 void
3226 gtk_toolbar_unset_icon_size (GtkToolbar *toolbar)
3227 {
3228   GtkToolbarPrivate *priv;
3229   GtkIconSize size;
3230
3231   g_return_if_fail (GTK_IS_TOOLBAR (toolbar));
3232
3233   priv = toolbar->priv;
3234
3235   if (priv->icon_size_set)
3236     {
3237       GtkSettings *settings = toolbar_get_settings (toolbar);
3238
3239       if (settings)
3240         {
3241           g_object_get (settings,
3242                         "gtk-toolbar-icon-size", &size,
3243                         NULL);
3244         }
3245       else
3246         size = DEFAULT_ICON_SIZE;
3247
3248       if (size != priv->icon_size)
3249         {
3250           gtk_toolbar_set_icon_size (toolbar, size);
3251           g_object_notify (G_OBJECT (toolbar), "icon-size");
3252         }
3253
3254       priv->icon_size_set = FALSE;
3255       g_object_notify (G_OBJECT (toolbar), "icon-size-set");
3256     }
3257 }
3258
3259 /*
3260  * ToolbarContent methods
3261  */
3262 typedef enum {
3263   UNKNOWN,
3264   YES,
3265   NO
3266 } TriState;
3267
3268 struct _ToolbarContent
3269 {
3270   ItemState      state;
3271
3272   GtkToolItem   *item;
3273   GtkAllocation  allocation;
3274   GtkAllocation  start_allocation;
3275   GtkAllocation  goal_allocation;
3276   guint          is_placeholder : 1;
3277   guint          disappearing : 1;
3278   guint          has_menu : 2;
3279 };
3280
3281 static void
3282 toolbar_item_visiblity_notify_cb (GObject *obj,
3283                                   GParamSpec *pspec,
3284                                   gpointer user_data)
3285 {
3286   GtkToolbar *toolbar = user_data;
3287
3288   gtk_toolbar_invalidate_order (toolbar);
3289 }
3290
3291 static ToolbarContent *
3292 toolbar_content_new_tool_item (GtkToolbar  *toolbar,
3293                                GtkToolItem *item,
3294                                gboolean     is_placeholder,
3295                                gint         pos)
3296 {
3297   GtkToolbarPrivate *priv = toolbar->priv;
3298   ToolbarContent *content;
3299
3300   content = g_slice_new0 (ToolbarContent);
3301
3302   content->state = NOT_ALLOCATED;
3303   content->item = item;
3304   content->is_placeholder = is_placeholder;
3305
3306   priv->content = g_list_insert (priv->content, content, pos);
3307
3308   gtk_widget_set_parent (GTK_WIDGET (item), GTK_WIDGET (toolbar));
3309   gtk_toolbar_invalidate_order (toolbar);
3310
3311   g_signal_connect (content->item, "notify::visible",
3312                     G_CALLBACK (toolbar_item_visiblity_notify_cb), toolbar);
3313
3314   if (!is_placeholder)
3315     {
3316       priv->num_children++;
3317
3318       gtk_toolbar_stop_sliding (toolbar);
3319     }
3320
3321   gtk_widget_queue_resize (GTK_WIDGET (toolbar));
3322   priv->need_rebuild = TRUE;
3323
3324   return content;
3325 }
3326
3327 static void
3328 toolbar_content_remove (ToolbarContent *content,
3329                         GtkToolbar     *toolbar)
3330 {
3331   GtkToolbarPrivate *priv = toolbar->priv;
3332
3333   gtk_toolbar_invalidate_order (toolbar);
3334   gtk_widget_unparent (GTK_WIDGET (content->item));
3335
3336   g_signal_handlers_disconnect_by_func (content->item,
3337                                         toolbar_item_visiblity_notify_cb,
3338                                         toolbar);
3339
3340   priv->content = g_list_remove (priv->content, content);
3341
3342   if (!toolbar_content_is_placeholder (content))
3343     priv->num_children--;
3344
3345   gtk_widget_queue_resize (GTK_WIDGET (toolbar));
3346   priv->need_rebuild = TRUE;
3347 }
3348
3349 static void
3350 toolbar_content_free (ToolbarContent *content)
3351 {
3352   g_slice_free (ToolbarContent, content);
3353 }
3354
3355 static gint
3356 calculate_max_homogeneous_pixels (GtkWidget *widget)
3357 {
3358   PangoContext *context;
3359   PangoFontMetrics *metrics;
3360   const PangoFontDescription *font_desc;
3361   GtkStyleContext *style_context;
3362   GtkStateFlags state;
3363   gint char_width;
3364
3365   context = gtk_widget_get_pango_context (widget);
3366   style_context = gtk_widget_get_style_context (widget);
3367   state = gtk_widget_get_state_flags (widget);
3368
3369   font_desc = gtk_style_context_get_font (style_context, state);
3370
3371   metrics = pango_context_get_metrics (context, font_desc,
3372                                        pango_context_get_language (context));
3373   char_width = pango_font_metrics_get_approximate_char_width (metrics);
3374   pango_font_metrics_unref (metrics);
3375
3376   return PANGO_PIXELS (MAX_HOMOGENEOUS_N_CHARS * char_width);
3377 }
3378
3379 static void
3380 toolbar_content_draw (ToolbarContent *content,
3381                       GtkContainer   *container,
3382                       cairo_t        *cr)
3383 {
3384   GtkWidget *widget;
3385
3386   if (content->is_placeholder)
3387     return;
3388
3389   widget = GTK_WIDGET (content->item);
3390
3391   if (widget)
3392     gtk_container_propagate_draw (container, widget, cr);
3393 }
3394
3395 static gboolean
3396 toolbar_content_visible (ToolbarContent *content,
3397                          GtkToolbar     *toolbar)
3398 {
3399   GtkToolbarPrivate *priv = toolbar->priv;
3400   GtkToolItem *item;
3401
3402   item = content->item;
3403
3404   if (!gtk_widget_get_visible (GTK_WIDGET (item)))
3405     return FALSE;
3406
3407   if (priv->orientation == GTK_ORIENTATION_HORIZONTAL &&
3408       gtk_tool_item_get_visible_horizontal (item))
3409     return TRUE;
3410
3411   if (priv->orientation == GTK_ORIENTATION_VERTICAL &&
3412       gtk_tool_item_get_visible_vertical (item))
3413     return TRUE;
3414
3415   return FALSE;
3416 }
3417
3418 static void
3419 toolbar_content_size_request (ToolbarContent *content,
3420                               GtkToolbar     *toolbar,
3421                               GtkRequisition *requisition)
3422 {
3423   gtk_widget_get_preferred_size (GTK_WIDGET (content->item),
3424                                  requisition, NULL);
3425   if (content->is_placeholder &&
3426       content->disappearing)
3427     {
3428       requisition->width = 0;
3429       requisition->height = 0;
3430     }
3431 }
3432
3433 static gboolean
3434 toolbar_content_is_homogeneous (ToolbarContent *content,
3435                                 GtkToolbar     *toolbar)
3436 {
3437   GtkToolbarPrivate *priv = toolbar->priv;
3438   GtkRequisition requisition;
3439   gboolean result;
3440
3441   if (priv->max_homogeneous_pixels < 0)
3442     {
3443       priv->max_homogeneous_pixels =
3444         calculate_max_homogeneous_pixels (GTK_WIDGET (toolbar));
3445     }
3446
3447   toolbar_content_size_request (content, toolbar, &requisition);
3448
3449   if (requisition.width > priv->max_homogeneous_pixels)
3450     return FALSE;
3451
3452   result = gtk_tool_item_get_homogeneous (content->item) &&
3453            !GTK_IS_SEPARATOR_TOOL_ITEM (content->item);
3454
3455   if (gtk_tool_item_get_is_important (content->item) &&
3456       priv->style == GTK_TOOLBAR_BOTH_HORIZ &&
3457       priv->orientation == GTK_ORIENTATION_HORIZONTAL)
3458     {
3459       result = FALSE;
3460     }
3461
3462   return result;
3463 }
3464
3465 static gboolean
3466 toolbar_content_is_placeholder (ToolbarContent *content)
3467 {
3468   if (content->is_placeholder)
3469     return TRUE;
3470
3471   return FALSE;
3472 }
3473
3474 static gboolean
3475 toolbar_content_disappearing (ToolbarContent *content)
3476 {
3477   if (content->disappearing)
3478     return TRUE;
3479
3480   return FALSE;
3481 }
3482
3483 static ItemState
3484 toolbar_content_get_state (ToolbarContent *content)
3485 {
3486   return content->state;
3487 }
3488
3489 static gboolean
3490 toolbar_content_child_visible (ToolbarContent *content)
3491 {
3492   return gtk_widget_get_child_visible (GTK_WIDGET (content->item));
3493 }
3494
3495 static void
3496 toolbar_content_get_goal_allocation (ToolbarContent *content,
3497                                      GtkAllocation  *allocation)
3498 {
3499   *allocation = content->goal_allocation;
3500 }
3501
3502 static void
3503 toolbar_content_get_allocation (ToolbarContent *content,
3504                                 GtkAllocation  *allocation)
3505 {
3506   *allocation = content->allocation;
3507 }
3508
3509 static void
3510 toolbar_content_set_start_allocation (ToolbarContent *content,
3511                                       GtkAllocation  *allocation)
3512 {
3513   content->start_allocation = *allocation;
3514 }
3515
3516 static gboolean
3517 toolbar_content_get_expand (ToolbarContent *content)
3518 {
3519   if (!content->disappearing &&
3520       gtk_tool_item_get_expand (content->item))
3521     return TRUE;
3522
3523   return FALSE;
3524 }
3525
3526 static void
3527 toolbar_content_set_goal_allocation (ToolbarContent *content,
3528                                      GtkAllocation  *allocation)
3529 {
3530   content->goal_allocation = *allocation;
3531 }
3532
3533 static void
3534 toolbar_content_set_child_visible (ToolbarContent *content,
3535                                    GtkToolbar     *toolbar,
3536                                    gboolean        visible)
3537 {
3538   gtk_widget_set_child_visible (GTK_WIDGET (content->item),
3539                                 visible);
3540 }
3541
3542 static void
3543 toolbar_content_get_start_allocation (ToolbarContent *content,
3544                                       GtkAllocation  *start_allocation)
3545 {
3546   *start_allocation = content->start_allocation;
3547 }
3548
3549 static void
3550 toolbar_content_size_allocate (ToolbarContent *content,
3551                                GtkAllocation  *allocation)
3552 {
3553   content->allocation = *allocation;
3554   gtk_widget_size_allocate (GTK_WIDGET (content->item),
3555                             allocation);
3556 }
3557
3558 static void
3559 toolbar_content_set_state (ToolbarContent *content,
3560                            ItemState       state)
3561 {
3562   content->state = state;
3563 }
3564
3565 static GtkWidget *
3566 toolbar_content_get_widget (ToolbarContent *content)
3567 {
3568   return GTK_WIDGET (content->item);
3569 }
3570
3571
3572 static void
3573 toolbar_content_set_disappearing (ToolbarContent *content,
3574                                   gboolean        disappearing)
3575 {
3576   content->disappearing = disappearing;
3577 }
3578
3579 static void
3580 toolbar_content_set_size_request (ToolbarContent *content,
3581                                   gint            width,
3582                                   gint            height)
3583 {
3584   gtk_widget_set_size_request (GTK_WIDGET (content->item),
3585                                width, height);
3586 }
3587
3588 static void
3589 toolbar_content_toolbar_reconfigured (ToolbarContent *content,
3590                                       GtkToolbar     *toolbar)
3591 {
3592   gtk_tool_item_toolbar_reconfigured (content->item);
3593 }
3594
3595 static GtkWidget *
3596 toolbar_content_retrieve_menu_item (ToolbarContent *content)
3597 {
3598   return gtk_tool_item_retrieve_proxy_menu_item (content->item);
3599 }
3600
3601 static gboolean
3602 toolbar_content_has_proxy_menu_item (ToolbarContent *content)
3603 {
3604   GtkWidget *menu_item;
3605
3606   if (content->has_menu == YES)
3607     return TRUE;
3608   else if (content->has_menu == NO)
3609     return FALSE;
3610
3611   menu_item = toolbar_content_retrieve_menu_item (content);
3612
3613   content->has_menu = menu_item? YES : NO;
3614
3615   return menu_item != NULL;
3616 }
3617
3618 static void
3619 toolbar_content_set_unknown_menu_status (ToolbarContent *content)
3620 {
3621   content->has_menu = UNKNOWN;
3622 }
3623
3624 static gboolean
3625 toolbar_content_is_separator (ToolbarContent *content)
3626 {
3627   return GTK_IS_SEPARATOR_TOOL_ITEM (content->item);
3628 }
3629
3630 static void
3631 toolbar_content_set_expand (ToolbarContent *content,
3632                             gboolean        expand)
3633 {
3634   gtk_tool_item_set_expand (content->item, expand);
3635 }
3636
3637 static void
3638 toolbar_content_show_all (ToolbarContent  *content)
3639 {
3640   GtkWidget *widget;
3641
3642   widget = toolbar_content_get_widget (content);
3643   if (widget)
3644     gtk_widget_show_all (widget);
3645 }
3646
3647 /*
3648  * Getters
3649  */
3650 static GtkReliefStyle
3651 get_button_relief (GtkToolbar *toolbar)
3652 {
3653   GtkReliefStyle button_relief = GTK_RELIEF_NORMAL;
3654
3655   gtk_widget_style_get (GTK_WIDGET (toolbar),
3656                         "button-relief", &button_relief,
3657                         NULL);
3658
3659   return button_relief;
3660 }
3661
3662 static gint
3663 get_internal_padding (GtkToolbar *toolbar)
3664 {
3665   gint ipadding = 0;
3666
3667   gtk_widget_style_get (GTK_WIDGET (toolbar),
3668                         "internal-padding", &ipadding,
3669                         NULL);
3670
3671   return ipadding;
3672 }
3673
3674 static gint
3675 get_max_child_expand (GtkToolbar *toolbar)
3676 {
3677   gint mexpand = G_MAXINT;
3678
3679   gtk_widget_style_get (GTK_WIDGET (toolbar),
3680                         "max-child-expand", &mexpand,
3681                         NULL);
3682   return mexpand;
3683 }
3684
3685 static GtkShadowType
3686 get_shadow_type (GtkToolbar *toolbar)
3687 {
3688   GtkShadowType shadow_type;
3689
3690   gtk_widget_style_get (GTK_WIDGET (toolbar),
3691                         "shadow-type", &shadow_type,
3692                         NULL);
3693
3694   return shadow_type;
3695 }
3696
3697 /* GTK+ internal methods */
3698
3699 gint
3700 _gtk_toolbar_get_default_space_size (void)
3701 {
3702   return DEFAULT_SPACE_SIZE;
3703 }
3704
3705 void
3706 _gtk_toolbar_paint_space_line (GtkWidget           *widget,
3707                                GtkToolbar          *toolbar,
3708                                cairo_t             *cr)
3709 {
3710   GtkOrientation orientation;
3711   GtkStyleContext *context;
3712   GtkStateFlags state;
3713   GtkBorder padding;
3714   gint width, height;
3715   const gdouble start_fraction = (SPACE_LINE_START / SPACE_LINE_DIVISION);
3716   const gdouble end_fraction = (SPACE_LINE_END / SPACE_LINE_DIVISION);
3717
3718   g_return_if_fail (GTK_IS_WIDGET (widget));
3719
3720   orientation = toolbar ? toolbar->priv->orientation : GTK_ORIENTATION_HORIZONTAL;
3721
3722   context = gtk_widget_get_style_context (widget);
3723   state = gtk_widget_get_state_flags (widget);
3724   width = gtk_widget_get_allocated_width (widget);
3725   height = gtk_widget_get_allocated_height (widget);
3726   gtk_style_context_get_padding (context, state, &padding);
3727
3728   if (orientation == GTK_ORIENTATION_HORIZONTAL)
3729     {
3730       gboolean wide_separators;
3731       gint     separator_width;
3732
3733       gtk_widget_style_get (widget,
3734                             "wide-separators", &wide_separators,
3735                             "separator-width", &separator_width,
3736                             NULL);
3737
3738       if (wide_separators)
3739         gtk_render_frame (context, cr,
3740                           (width - separator_width) / 2,
3741                           height * start_fraction,
3742                           separator_width,
3743                           height * (end_fraction - start_fraction));
3744       else
3745         gtk_render_line (context, cr,
3746                          (width - padding.left) / 2,
3747                          height * start_fraction,
3748                          (width - padding.left) / 2,
3749                          height * end_fraction);
3750     }
3751   else
3752     {
3753       gboolean wide_separators;
3754       gint     separator_height;
3755
3756       gtk_widget_style_get (widget,
3757                             "wide-separators",  &wide_separators,
3758                             "separator-height", &separator_height,
3759                             NULL);
3760
3761       if (wide_separators)
3762         gtk_render_frame (context, cr,
3763                           width * start_fraction,
3764                           (height - separator_height) / 2,
3765                           width * (end_fraction - start_fraction),
3766                           separator_height);
3767       else
3768         gtk_render_line (context, cr,
3769                          width * start_fraction,
3770                          (height - padding.top) / 2,
3771                          width * end_fraction,
3772                          (height - padding.top) / 2);
3773     }
3774 }
3775
3776 gchar *
3777 _gtk_toolbar_elide_underscores (const gchar *original)
3778 {
3779   gchar *q, *result;
3780   const gchar *p, *end;
3781   gsize len;
3782   gboolean last_underscore;
3783
3784   if (!original)
3785     return NULL;
3786
3787   len = strlen (original);
3788   q = result = g_malloc (len + 1);
3789   last_underscore = FALSE;
3790
3791   end = original + len;
3792   for (p = original; p < end; p++)
3793     {
3794       if (!last_underscore && *p == '_')
3795         last_underscore = TRUE;
3796       else
3797         {
3798           last_underscore = FALSE;
3799           if (original + 2 <= p && p + 1 <= end &&
3800               p[-2] == '(' && p[-1] == '_' && p[0] != '_' && p[1] == ')')
3801             {
3802               q--;
3803               *q = '\0';
3804               p++;
3805             }
3806           else
3807             *q++ = *p;
3808         }
3809     }
3810
3811   if (last_underscore)
3812     *q++ = '_';
3813
3814   *q = '\0';
3815
3816   return result;
3817 }
3818
3819 static GtkIconSize
3820 toolbar_get_icon_size (GtkToolShell *shell)
3821 {
3822   GtkToolbar *toolbar = GTK_TOOLBAR (shell);
3823   GtkToolbarPrivate *priv = toolbar->priv;
3824
3825   return priv->icon_size;
3826 }
3827
3828 static GtkOrientation
3829 toolbar_get_orientation (GtkToolShell *shell)
3830 {
3831   GtkToolbar *toolbar = GTK_TOOLBAR (shell);
3832   GtkToolbarPrivate *priv = toolbar->priv;
3833
3834   return priv->orientation;
3835 }
3836
3837 static GtkToolbarStyle
3838 toolbar_get_style (GtkToolShell *shell)
3839 {
3840   GtkToolbar *toolbar = GTK_TOOLBAR (shell);
3841   GtkToolbarPrivate *priv = toolbar->priv;
3842
3843   return priv->style;
3844 }
3845
3846 static GtkReliefStyle
3847 toolbar_get_relief_style (GtkToolShell *shell)
3848 {
3849   return get_button_relief (GTK_TOOLBAR (shell));
3850 }
3851
3852 static void
3853 toolbar_rebuild_menu (GtkToolShell *shell)
3854 {
3855   GtkToolbar *toolbar = GTK_TOOLBAR (shell);
3856   GtkToolbarPrivate *priv = toolbar->priv;
3857   GList *list;
3858
3859   priv->need_rebuild = TRUE;
3860
3861   for (list = priv->content; list != NULL; list = list->next)
3862     {
3863       ToolbarContent *content = list->data;
3864
3865       toolbar_content_set_unknown_menu_status (content);
3866     }
3867
3868   gtk_widget_queue_resize (GTK_WIDGET (shell));
3869 }
3870
3871 typedef struct _CountingData CountingData;
3872 struct _CountingData {
3873   GtkWidget *widget;
3874   gboolean found;
3875   guint before;
3876   guint after;
3877 };
3878
3879 static void
3880 count_widget_position (GtkWidget *widget,
3881                        gpointer   data)
3882 {
3883   CountingData *count = data;
3884
3885   if (!gtk_widget_get_visible (widget))
3886     return;
3887
3888   if (count->widget == widget)
3889     count->found = TRUE;
3890   else if (count->found)
3891     count->after++;
3892   else
3893     count->before++;
3894 }
3895
3896 static guint
3897 gtk_toolbar_get_visible_position (GtkToolbar *toolbar,
3898                                   GtkWidget  *child)
3899 {
3900   CountingData count = { child, FALSE, 0, 0 };
3901
3902   if (child == (GtkWidget*)toolbar->priv->highlight_tool_item)
3903     return 0;
3904
3905   /* foreach iterates in visible order */
3906   gtk_container_forall (GTK_CONTAINER (toolbar),
3907                         count_widget_position,
3908                         &count);
3909
3910   g_assert (count.found);
3911
3912   if (toolbar->priv->orientation == GTK_ORIENTATION_HORIZONTAL &&
3913       gtk_widget_get_direction (GTK_WIDGET (toolbar)) == GTK_TEXT_DIR_RTL)
3914     return count.after;
3915
3916   return count.before;
3917 }
3918
3919 static void
3920 add_widget_to_path (gpointer data,
3921                     gpointer user_data)
3922 {
3923   GtkWidget *widget = data;
3924   GtkWidgetPath *path = user_data;
3925
3926   if (gtk_widget_get_visible (widget))
3927     gtk_widget_path_append_for_widget (path, widget);
3928 }
3929
3930 static GtkWidgetPath *
3931 gtk_toolbar_get_path_for_child (GtkContainer *container,
3932                                 GtkWidget    *child)
3933 {
3934   GtkWidgetPath *path;
3935   GtkToolbar *toolbar;
3936   GtkToolbarPrivate *priv;
3937   gint vis_index;
3938
3939   toolbar = GTK_TOOLBAR (container);
3940   priv = toolbar->priv;
3941
3942   if (priv->sibling_path == NULL)
3943     {
3944       GList *children;
3945
3946       /* build a path for all the visible children;
3947        * get_children works in visible order
3948        */
3949       priv->sibling_path = gtk_widget_path_new ();
3950       children = gtk_container_get_children (container);
3951
3952       if (priv->orientation == GTK_ORIENTATION_HORIZONTAL &&
3953           gtk_widget_get_direction (GTK_WIDGET (toolbar)) == GTK_TEXT_DIR_RTL)
3954         children = g_list_reverse (children);
3955
3956       g_list_foreach (children, add_widget_to_path, priv->sibling_path);
3957       g_list_free (children);
3958     }
3959
3960   path = gtk_widget_path_copy (gtk_widget_get_path (GTK_WIDGET (container)));
3961   if (gtk_widget_get_visible (child))
3962     {
3963       vis_index = gtk_toolbar_get_visible_position (toolbar, child);
3964
3965       if (vis_index < gtk_widget_path_length (priv->sibling_path))
3966         gtk_widget_path_append_with_siblings (path,
3967                                               priv->sibling_path,
3968                                               vis_index);
3969       else
3970         gtk_widget_path_append_for_widget (path, child);
3971     }
3972   else
3973     gtk_widget_path_append_for_widget (path, child);
3974
3975   return path;
3976 }
3977
3978 static void
3979 gtk_toolbar_invalidate_order (GtkToolbar *toolbar)
3980 {
3981   GtkToolbarPrivate *priv = toolbar->priv;
3982
3983   if (priv->sibling_path != NULL)
3984     {
3985       gtk_widget_path_unref (priv->sibling_path);
3986       priv->sibling_path = NULL;
3987
3988       gtk_container_foreach (GTK_CONTAINER (toolbar),
3989                              (GtkCallback) gtk_widget_reset_style,
3990                              NULL);
3991     }
3992 }
3993