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