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

   1 /* GTK - The GIMP Toolkit
   2  *
   3  * Copyright (C) 2003 Ricardo Fernandez Pascual
   4  * Copyright (C) 2004 Paolo Borelli
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the
  18  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19  * Boston, MA 02111-1307, USA.
  20  */
  21
  22 #include <config.h>
  23 #include "gtkmenutoolbutton.h"
  24 #include "gtkintl.h"
  25 #include "gtktogglebutton.h"
  26 #include "gtkarrow.h"
  27 #include "gtkhbox.h"
  28 #include "gtkvbox.h"
  29 #include "gtkmenu.h"
  30 #include "gtkmain.h"
  31 #include "gtkprivate.h"
  32 #include "gtkalias.h"
  33
  34
  35 #define GTK_MENU_TOOL_BUTTON_GET_PRIVATE(object)(G_TYPE_INSTANCE_GET_PRIVATE ((object), GTK_TYPE_MENU_TOOL_BUTTON, GtkMenuToolButtonPrivate))
  36
  37 struct _GtkMenuToolButtonPrivate
  38 {
  39   GtkWidget *button;
  40   GtkWidget *arrow;
  41   GtkWidget *arrow_button;
  42   GtkWidget *box;
  43   GtkMenu   *menu;
  44 };
  45
  46 static void gtk_menu_tool_button_init       (GtkMenuToolButton      *button);
  47 static void gtk_menu_tool_button_class_init (GtkMenuToolButtonClass *klass);
  48 static void gtk_menu_tool_button_destroy    (GtkObject              *object);
  49
  50 static int  menu_deactivate_cb              (GtkMenuShell           *menu_shell,
  51                                              GtkMenuToolButton      *button);
  52
  53 enum
  54 {
  55   SHOW_MENU,
  56   LAST_SIGNAL
  57 };
  58
  59 enum
  60 {
  61   PROP_0,
  62   PROP_MENU,
  63   LAST_PROP
  64 };
  65
  66 static gint signals[LAST_SIGNAL];
  67
  68 static GObjectClass *parent_class = NULL;
  69
  70 GType
  71 gtk_menu_tool_button_get_type (void)
  72 {
  73   static GType type = 0;
  74
  75   if (type == 0)
  76     {
  77       static const GTypeInfo info =
  78         {
  79           sizeof (GtkMenuToolButtonClass),
  80           (GBaseInitFunc) 0,
  81           (GBaseFinalizeFunc) 0,
  82           (GClassInitFunc) gtk_menu_tool_button_class_init,
  83           (GClassFinalizeFunc) 0,
  84           NULL,
  85           sizeof (GtkMenuToolButton),
  86           0, /* n_preallocs */
  87           (GInstanceInitFunc) gtk_menu_tool_button_init
  88         };
  89
  90       type = g_type_register_static (GTK_TYPE_TOOL_BUTTON,
  91                                      I_("GtkMenuToolButton"),
  92                                      &info, 0);
  93     }
  94
  95   return type;
  96 }
  97
  98 static gboolean
  99 gtk_menu_tool_button_set_tooltip (GtkToolItem *tool_item,
 100                                   GtkTooltips *tooltips,
 101                                   const char  *tip_text,
 102                                   const char  *tip_private)
 103 {
 104   GtkMenuToolButton *button;
 105
 106   g_return_val_if_fail (GTK_IS_MENU_TOOL_BUTTON (tool_item), FALSE);
 107
 108   button = GTK_MENU_TOOL_BUTTON (tool_item);
 109   gtk_tooltips_set_tip (tooltips, button->priv->button, tip_text, tip_private);
 110
 111   return TRUE;
 112 }
 113
 114 static void
 115 gtk_menu_tool_button_construct_contents (GtkMenuToolButton *button)
 116 {
 117   GtkMenuToolButtonPrivate *priv = button->priv;
 118   GtkWidget *box;
 119   GtkOrientation orientation;
 120
 121   orientation = gtk_tool_item_get_orientation (GTK_TOOL_ITEM (button));
 122
 123   if (orientation == GTK_ORIENTATION_HORIZONTAL)
 124     {
 125       box = gtk_hbox_new (FALSE, 0);
 126       gtk_arrow_set (GTK_ARROW (priv->arrow), GTK_ARROW_DOWN, GTK_SHADOW_NONE);
 127     }
 128   else
 129     {
 130       box = gtk_vbox_new (FALSE, 0);
 131       gtk_arrow_set (GTK_ARROW (priv->arrow), GTK_ARROW_RIGHT, GTK_SHADOW_NONE);
 132     }
 133
 134   if (priv->button && priv->button->parent)
 135     {
 136       g_object_ref (priv->button);
 137       gtk_container_remove (GTK_CONTAINER (priv->button->parent),
 138                             priv->button);
 139       gtk_container_add (GTK_CONTAINER (box), priv->button);
 140       g_object_unref (priv->button);
 141     }
 142
 143   if (priv->arrow_button && priv->arrow_button->parent)
 144     {
 145       g_object_ref (priv->arrow_button);
 146       gtk_container_remove (GTK_CONTAINER (priv->arrow_button->parent),
 147                             priv->arrow_button);
 148       gtk_box_pack_end (GTK_BOX (box), priv->arrow_button,
 149                         FALSE, FALSE, 0);
 150       g_object_unref (priv->arrow_button);
 151     }
 152
 153   if (priv->box)
 154     {
 155       /* Note: we are not destroying the button and the arrow_button
 156        * here because they were removed from their container above
 157        */
 158       gtk_widget_destroy (priv->box);
 159     }
 160
 161   priv->box = box;
 162
 163   gtk_container_add (GTK_CONTAINER (button), priv->box);
 164   gtk_widget_show_all (priv->box);
 165
 166   gtk_button_set_relief (GTK_BUTTON (priv->arrow_button),
 167                          gtk_tool_item_get_relief_style (GTK_TOOL_ITEM (button)));
 168
 169   gtk_widget_queue_resize (GTK_WIDGET (button));
 170 }
 171
 172 static void
 173 gtk_menu_tool_button_toolbar_reconfigured (GtkToolItem *toolitem)
 174 {
 175   gtk_menu_tool_button_construct_contents (GTK_MENU_TOOL_BUTTON (toolitem));
 176
 177   /* chain up */
 178   GTK_TOOL_ITEM_CLASS (parent_class)->toolbar_reconfigured (toolitem);
 179 }
 180
 181 static void
 182 gtk_menu_tool_button_state_changed (GtkWidget    *widget,
 183                                     GtkStateType  previous_state)
 184 {
 185   GtkMenuToolButton *button = GTK_MENU_TOOL_BUTTON (widget);
 186   GtkMenuToolButtonPrivate *priv = button->priv;
 187
 188   if (!GTK_WIDGET_IS_SENSITIVE (widget) && priv->menu)
 189     {
 190       gtk_menu_shell_deactivate (GTK_MENU_SHELL (priv->menu));
 191     }
 192 }
 193
 194 static void
 195 gtk_menu_tool_button_set_property (GObject      *object,
 196                                    guint         prop_id,
 197                                    const GValue *value,
 198                                    GParamSpec   *pspec)
 199 {
 200   GtkMenuToolButton *button = GTK_MENU_TOOL_BUTTON (object);
 201
 202   switch (prop_id)
 203     {
 204     case PROP_MENU:
 205       gtk_menu_tool_button_set_menu (button, g_value_get_object (value));
 206       break;
 207
 208     default:
 209       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 210       break;
 211     }
 212 }
 213
 214 static void
 215 gtk_menu_tool_button_get_property (GObject    *object,
 216                                    guint       prop_id,
 217                                    GValue     *value,
 218                                    GParamSpec *pspec)
 219 {
 220   GtkMenuToolButton *button = GTK_MENU_TOOL_BUTTON (object);
 221
 222   switch (prop_id)
 223     {
 224     case PROP_MENU:
 225       g_value_set_object (value, button->priv->menu);
 226       break;
 227
 228     default:
 229       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 230       break;
 231     }
 232 }
 233
 234 static void
 235 gtk_menu_tool_button_class_init (GtkMenuToolButtonClass *klass)
 236 {
 237   GObjectClass *object_class;
 238   GtkObjectClass *gtk_object_class;
 239   GtkWidgetClass *widget_class;
 240   GtkToolItemClass *toolitem_class;
 241
 242   parent_class = g_type_class_peek_parent (klass);
 243
 244   object_class = (GObjectClass *)klass;
 245   gtk_object_class = (GtkObjectClass *)klass;
 246   widget_class = (GtkWidgetClass *)klass;
 247   toolitem_class = (GtkToolItemClass *)klass;
 248
 249   object_class->set_property = gtk_menu_tool_button_set_property;
 250   object_class->get_property = gtk_menu_tool_button_get_property;
 251   gtk_object_class->destroy = gtk_menu_tool_button_destroy;
 252   widget_class->state_changed = gtk_menu_tool_button_state_changed;
 253   toolitem_class->set_tooltip = gtk_menu_tool_button_set_tooltip;
 254   toolitem_class->toolbar_reconfigured = gtk_menu_tool_button_toolbar_reconfigured;
 255
 256   signals[SHOW_MENU] =
 257     g_signal_new (I_("show-menu"),
 258                   G_OBJECT_CLASS_TYPE (klass),
 259                   G_SIGNAL_RUN_FIRST,
 260                   G_STRUCT_OFFSET (GtkMenuToolButtonClass, show_menu),
 261                   NULL, NULL,
 262                   g_cclosure_marshal_VOID__VOID,
 263                   G_TYPE_NONE, 0);
 264
 265   g_object_class_install_property (object_class,
 266                                    PROP_MENU,
 267                                    g_param_spec_object ("menu",
 268                                                         P_("Menu"),
 269                                                         P_("The dropdown menu"),
 270                                                         GTK_TYPE_MENU,
 271                                                         GTK_PARAM_READWRITE));
 272
 273   g_type_class_add_private (object_class, sizeof (GtkMenuToolButtonPrivate));
 274 }
 275
 276 static void
 277 menu_position_func (GtkMenu           *menu,
 278                     int               *x,
 279                     int               *y,
 280                     gboolean          *push_in,
 281                     GtkMenuToolButton *button)
 282 {
 283   GtkMenuToolButtonPrivate *priv = button->priv;
 284   GtkWidget *widget = GTK_WIDGET (button);
 285   GtkRequisition req;
 286   GtkRequisition menu_req;
 287   GtkOrientation orientation;
 288   GtkTextDirection direction;
 289   GdkRectangle monitor;
 290   gint monitor_num;
 291   GdkScreen *screen;
 292
 293   gtk_widget_size_request (GTK_WIDGET (priv->menu), &menu_req);
 294
 295   orientation = gtk_tool_item_get_orientation (GTK_TOOL_ITEM (button));
 296   direction = gtk_widget_get_direction (widget);
 297
 298   screen = gtk_widget_get_screen (GTK_WIDGET (menu));
 299   monitor_num = gdk_screen_get_monitor_at_window (screen, widget->window);
 300   if (monitor_num < 0)
 301     monitor_num = 0;
 302   gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
 303
 304   if (orientation == GTK_ORIENTATION_HORIZONTAL)
 305     {
 306       gdk_window_get_origin (widget->window, x, y);
 307       *x += widget->allocation.x;
 308       *y += widget->allocation.y;
 309
 310       if (direction == GTK_TEXT_DIR_LTR)
 311         *x += MAX (widget->allocation.width - menu_req.width, 0);
 312       else if (menu_req.width > widget->allocation.width)
 313         *x -= menu_req.width - widget->allocation.width;
 314
 315       if ((*y + priv->arrow_button->allocation.height + menu_req.height) <= monitor.y + monitor.height)
 316         *y += priv->arrow_button->allocation.height;
 317       else if ((*y - menu_req.height) >= monitor.y)
 318         *y -= menu_req.height;
 319       else if (monitor.y + monitor.height - (*y + priv->arrow_button->allocation.height) > *y)
 320         *y += priv->arrow_button->allocation.height;
 321       else
 322         *y -= menu_req.height;
 323     }
 324   else
 325     {
 326       gdk_window_get_origin (GTK_BUTTON (priv->arrow_button)->event_window, x, y);
 327       gtk_widget_size_request (priv->arrow_button, &req);
 328
 329       if (direction == GTK_TEXT_DIR_LTR)
 330         *x += priv->arrow_button->allocation.width;
 331       else
 332         *x -= menu_req.width;
 333
 334       if (*y + menu_req.height > monitor.y + monitor.height &&
 335           *y + priv->arrow_button->allocation.height - monitor.y > monitor.y + monitor.height - *y)
 336         *y += priv->arrow_button->allocation.height - menu_req.height;
 337     }
 338
 339   *push_in = FALSE;
 340 }
 341
 342 static void
 343 popup_menu_under_arrow (GtkMenuToolButton *button,
 344                         GdkEventButton    *event)
 345 {
 346   GtkMenuToolButtonPrivate *priv = button->priv;
 347
 348   g_signal_emit (button, signals[SHOW_MENU], 0);
 349
 350   if (!priv->menu)
 351     return;
 352
 353   gtk_menu_popup (priv->menu, NULL, NULL,
 354                   (GtkMenuPositionFunc) menu_position_func,
 355                   button,
 356                   event ? event->button : 0,
 357                   event ? event->time : gtk_get_current_event_time ());
 358 }
 359
 360 static void
 361 arrow_button_toggled_cb (GtkToggleButton   *togglebutton,
 362                          GtkMenuToolButton *button)
 363 {
 364   GtkMenuToolButtonPrivate *priv = button->priv;
 365
 366   if (!priv->menu)
 367     return;
 368
 369   if (gtk_toggle_button_get_active (togglebutton) &&
 370       !GTK_WIDGET_VISIBLE (priv->menu))
 371     {
 372       /* we get here only when the menu is activated by a key
 373        * press, so that we can select the first menu item */
 374       popup_menu_under_arrow (button, NULL);
 375       gtk_menu_shell_select_first (GTK_MENU_SHELL (priv->menu), FALSE);
 376     }
 377 }
 378
 379 static gboolean
 380 arrow_button_button_press_event_cb (GtkWidget         *widget,
 381                                     GdkEventButton    *event,
 382                                     GtkMenuToolButton *button)
 383 {
 384   if (event->button == 1)
 385     {
 386       popup_menu_under_arrow (button, event);
 387       gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (widget), TRUE);
 388
 389       return TRUE;
 390     }
 391   else
 392     {
 393       return FALSE;
 394     }
 395 }
 396
 397 static void
 398 gtk_menu_tool_button_init (GtkMenuToolButton *button)
 399 {
 400   GtkWidget *box;
 401   GtkWidget *arrow;
 402   GtkWidget *arrow_button;
 403   GtkWidget *real_button;
 404
 405   button->priv = GTK_MENU_TOOL_BUTTON_GET_PRIVATE (button);
 406
 407   gtk_tool_item_set_homogeneous (GTK_TOOL_ITEM (button), FALSE);
 408
 409   box = gtk_hbox_new (FALSE, 0);
 410
 411   real_button = GTK_BIN (button)->child;
 412   g_object_ref (real_button);
 413   gtk_container_remove (GTK_CONTAINER (button), real_button);
 414   gtk_container_add (GTK_CONTAINER (box), real_button);
 415   g_object_unref (real_button);
 416
 417   arrow_button = gtk_toggle_button_new ();
 418   arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_NONE);
 419   gtk_container_add (GTK_CONTAINER (arrow_button), arrow);
 420   gtk_box_pack_end (GTK_BOX (box), arrow_button,
 421                     FALSE, FALSE, 0);
 422
 423   /* the arrow button is insentive until we set a menu */
 424   gtk_widget_set_sensitive (arrow_button, FALSE);
 425
 426   gtk_widget_show_all (box);
 427
 428   gtk_container_add (GTK_CONTAINER (button), box);
 429
 430   button->priv->button = real_button;
 431   button->priv->arrow = arrow;
 432   button->priv->arrow_button = arrow_button;
 433   button->priv->box = box;
 434
 435   g_signal_connect (arrow_button, "toggled",
 436                     G_CALLBACK (arrow_button_toggled_cb), button);
 437   g_signal_connect (arrow_button, "button_press_event",
 438                     G_CALLBACK (arrow_button_button_press_event_cb), button);
 439 }
 440
 441 static void
 442 gtk_menu_tool_button_destroy (GtkObject *object)
 443 {
 444   GtkMenuToolButton *button;
 445
 446   button = GTK_MENU_TOOL_BUTTON (object);
 447
 448   if (button->priv->menu)
 449     {
 450       g_signal_handlers_disconnect_by_func (button->priv->menu,
 451                                             menu_deactivate_cb,
 452                                             button);
 453       g_object_unref (button->priv->menu);
 454       button->priv->menu = NULL;
 455
 456       g_signal_handlers_disconnect_by_func (button->priv->arrow_button,
 457                                             arrow_button_toggled_cb,
 458                                             button);
 459       g_signal_handlers_disconnect_by_func (button->priv->arrow_button,
 460                                             arrow_button_button_press_event_cb,
 461                                             button);
 462     }
 463
 464   if (GTK_OBJECT_CLASS (parent_class)->destroy)
 465     (*GTK_OBJECT_CLASS (parent_class)->destroy) (object);
 466 }
 467
 468 /**
 469  * gtk_menu_tool_button_new:
 470  * @icon_widget: a widget that will be used as icon widget, or %NULL
 471  * @label: a string that will be used as label, or %NULL
 472  *
 473  * Creates a new #GtkMenuToolButton using @icon_widget as icon and
 474  * @label as label.
 475  *
 476  * Return value: the new #GtkMenuToolButton
 477  *
 478  * Since: 2.6
 479  **/
 480 GtkToolItem *
 481 gtk_menu_tool_button_new (GtkWidget   *icon_widget,
 482                           const gchar *label)
 483 {
 484   GtkMenuToolButton *button;
 485
 486   button = g_object_new (GTK_TYPE_MENU_TOOL_BUTTON, NULL);
 487
 488   if (label)
 489     gtk_tool_button_set_label (GTK_TOOL_BUTTON (button), label);
 490
 491   if (icon_widget)
 492     gtk_tool_button_set_icon_widget (GTK_TOOL_BUTTON (button), icon_widget);
 493
 494   return GTK_TOOL_ITEM (button);
 495 }
 496
 497 /**
 498  * gtk_menu_tool_button_new_from_stock:
 499  * @stock_id: the name of a stock item
 500  *
 501  * Creates a new #GtkMenuToolButton.
 502  * The new #GtkMenuToolButton will contain an icon and label from
 503  * the stock item indicated by @stock_id.
 504  *
 505  * Return value: the new #GtkMenuToolButton
 506  *
 507  * Since: 2.6
 508  **/
 509 GtkToolItem *
 510 gtk_menu_tool_button_new_from_stock (const gchar *stock_id)
 511 {
 512   GtkMenuToolButton *button;
 513
 514   g_return_val_if_fail (stock_id != NULL, NULL);
 515
 516   button = g_object_new (GTK_TYPE_MENU_TOOL_BUTTON,
 517                          "stock-id", stock_id,
 518                          NULL);
 519
 520   return GTK_TOOL_ITEM (button);
 521 }
 522
 523 /* Callback for the "deactivate" signal on the pop-up menu.
 524  * This is used so that we unset the state of the toggle button
 525  * when the pop-up menu disappears.
 526  */
 527 static int
 528 menu_deactivate_cb (GtkMenuShell      *menu_shell,
 529                     GtkMenuToolButton *button)
 530 {
 531   GtkMenuToolButtonPrivate *priv = button->priv;
 532
 533   gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (priv->arrow_button), FALSE);
 534
 535   return TRUE;
 536 }
 537
 538 /**
 539  * gtk_menu_tool_button_set_menu:
 540  * @button: a #GtkMenuToolButton
 541  * @menu: the #GtkMenu associated with #GtkMenuToolButton
 542  *
 543  * Sets the #GtkMenu that is popped up when the user clicks on the arrow.
 544  * If @menu is NULL, the arrow button becomes insensitive.
 545  *
 546  * Since: 2.6
 547  **/
 548 void
 549 gtk_menu_tool_button_set_menu (GtkMenuToolButton *button,
 550                                GtkWidget         *menu)
 551 {
 552   GtkMenuToolButtonPrivate *priv;
 553
 554   g_return_if_fail (GTK_IS_MENU_TOOL_BUTTON (button));
 555   g_return_if_fail (GTK_IS_MENU (menu) || menu == NULL);
 556
 557   priv = button->priv;
 558
 559   if (priv->menu != GTK_MENU (menu))
 560     {
 561       if (priv->menu && GTK_WIDGET_VISIBLE (priv->menu))
 562         gtk_menu_shell_deactivate (GTK_MENU_SHELL (priv->menu));
 563
 564       if (priv->menu)
 565         {
 566           g_signal_handlers_disconnect_by_func (priv->menu,
 567                                                 menu_deactivate_cb,
 568                                                 button);
 569           g_object_unref (priv->menu);
 570         }
 571
 572       priv->menu = GTK_MENU (menu);
 573
 574       if (priv->menu)
 575         {
 576           g_object_ref_sink (priv->menu);
 577
 578           gtk_widget_set_sensitive (priv->arrow_button, TRUE);
 579
 580           g_signal_connect (button->priv->menu, "deactivate",
 581                             G_CALLBACK (menu_deactivate_cb), button);
 582         }
 583       else
 584        gtk_widget_set_sensitive (priv->arrow_button, FALSE);
 585     }
 586
 587   g_object_notify (G_OBJECT (button), "menu");
 588 }
 589
 590 /**
 591  * gtk_menu_tool_button_get_menu:
 592  * @button: a #GtkMenuToolButton
 593  *
 594  * Gets the #GtkMenu associated with #GtkMenuToolButton.
 595  *
 596  * Return value: the #GtkMenu associated with #GtkMenuToolButton
 597  *
 598  * Since: 2.6
 599  **/
 600 GtkWidget *
 601 gtk_menu_tool_button_get_menu (GtkMenuToolButton *button)
 602 {
 603   g_return_val_if_fail (GTK_IS_MENU_TOOL_BUTTON (button), NULL);
 604
 605   return GTK_WIDGET (button->priv->menu);
 606 }
 607
 608 /**
 609  * gtk_menu_tool_button_set_arrow_tooltip:
 610  * @button: a #GtkMenuToolButton
 611  * @tooltips: the #GtkTooltips object to be used
 612  * @tip_text: text to be used as tooltip text for tool_item
 613  * @tip_private: text to be used as private tooltip text
 614  *
 615  * Sets the #GtkTooltips object to be used for arrow button which
 616  * pops up the menu. See gtk_tool_item_set_tooltip() for setting
 617  * a tooltip on the whole #GtkMenuToolButton.
 618  *
 619  * Since: 2.6
 620  **/
 621 void
 622 gtk_menu_tool_button_set_arrow_tooltip (GtkMenuToolButton *button,
 623                                         GtkTooltips       *tooltips,
 624                                         const gchar       *tip_text,
 625                                         const gchar       *tip_private)
 626 {
 627   g_return_if_fail (GTK_IS_MENU_TOOL_BUTTON (button));
 628
 629   gtk_tooltips_set_tip (tooltips, button->priv->arrow_button, tip_text, tip_private);
 630 }
 631
 632 #define __GTK_MENU_TOOL_BUTTON_C__
 633 #include "gtkaliasdef.c"