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

   1 /* GTK - The GIMP Toolkit
   2  * Copyright (C) 2005 Ronald S. Bultje
   3  * Copyright (C) 2006, 2007 Christian Persch
   4  * Copyright (C) 2006 Jan Arne Petersen
   5  * Copyright (C) 2005-2007 Red Hat, Inc.
   6  *
   7  * Authors:
   8  * - Ronald S. Bultje <rbultje@ronald.bitfreak.net>
   9  * - Bastien Nocera <bnocera@redhat.com>
  10  * - Jan Arne Petersen <jpetersen@jpetersen.org>
  11  * - Christian Persch <chpe@svn.gnome.org>
  12  *
  13  * This library is free software; you can redistribute it and/or
  14  * modify it under the terms of the GNU Lesser General Public
  15  * License as published by the Free Software Foundation; either
  16  * version 2 of the License, or (at your option) any later version.
  17  *
  18  * This library is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  21  * Lesser General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU Lesser General Public
  24  * License along with this library; if not, write to the
  25  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  26  * Boston, MA 02111-1307, USA.
  27  */
  28
  29 /*
  30  * Modified by the GTK+ Team and others 2007.  See the AUTHORS
  31  * file for a list of people on the GTK+ Team.  See the ChangeLog
  32  * files for a list of changes.  These files are distributed with
  33  * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  34  */
  35
  36 #include "config.h"
  37
  38 #ifndef _WIN32
  39 #define _GNU_SOURCE
  40 #endif
  41 #include <math.h>
  42 #include <stdlib.h>
  43 #include <string.h>
  44
  45 #include <gdk-pixbuf/gdk-pixbuf.h>
  46 #include <gdk/gdkkeysyms.h>
  47
  48 #include "gtkbindings.h"
  49 #include "gtkframe.h"
  50 #include "gtkmain.h"
  51 #include "gtkmarshalers.h"
  52 #include "gtkorientable.h"
  53 #include "gtkprivate.h"
  54 #include "gtkscale.h"
  55 #include "gtkscalebutton.h"
  56 #include "gtkstock.h"
  57 #include "gtkvbox.h"
  58 #include "gtkwindow.h"
  59
  60 #include "gtkintl.h"
  61 #include "gtkalias.h"
  62
  63 #define SCALE_SIZE 100
  64 #define CLICK_TIMEOUT 250
  65
  66 enum
  67 {
  68   VALUE_CHANGED,
  69   POPUP,
  70   POPDOWN,
  71
  72   LAST_SIGNAL
  73 };
  74
  75 enum
  76 {
  77   PROP_0,
  78
  79   PROP_ORIENTATION,
  80   PROP_VALUE,
  81   PROP_SIZE,
  82   PROP_ADJUSTMENT,
  83   PROP_ICONS
  84 };
  85
  86 #define GET_PRIVATE(obj)        (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GTK_TYPE_SCALE_BUTTON, GtkScaleButtonPrivate))
  87
  88 struct _GtkScaleButtonPrivate
  89 {
  90   GtkWidget *dock;
  91   GtkWidget *box;
  92   GtkWidget *scale;
  93   GtkWidget *image;
  94
  95   GtkIconSize size;
  96   GtkOrientation orientation;
  97
  98   guint click_id;
  99   gint click_timeout;
 100   guint timeout : 1;
 101   gdouble direction;
 102   guint32 pop_time;
 103
 104   gchar **icon_list;
 105
 106   GtkAdjustment *adjustment; /* needed because it must be settable in init() */
 107 };
 108
 109 static GObject* gtk_scale_button_constructor    (GType                  type,
 110                                                  guint                  n_construct_properties,
 111                                                  GObjectConstructParam *construct_params);
 112 static void     gtk_scale_button_dispose        (GObject             *object);
 113 static void     gtk_scale_button_finalize       (GObject             *object);
 114 static void     gtk_scale_button_set_property   (GObject             *object,
 115                                                  guint                prop_id,
 116                                                  const GValue        *value,
 117                                                  GParamSpec          *pspec);
 118 static void     gtk_scale_button_get_property   (GObject             *object,
 119                                                  guint                prop_id,
 120                                                  GValue              *value,
 121                                                  GParamSpec          *pspec);
 122 static gboolean gtk_scale_button_scroll         (GtkWidget           *widget,
 123                                                  GdkEventScroll      *event);
 124 static void gtk_scale_button_screen_changed     (GtkWidget           *widget,
 125                                                  GdkScreen           *previous_screen);
 126 static gboolean gtk_scale_button_press          (GtkWidget           *widget,
 127                                                  GdkEventButton      *event);
 128 static gboolean gtk_scale_button_key_release    (GtkWidget           *widget,
 129                                                  GdkEventKey         *event);
 130 static void     gtk_scale_button_popup          (GtkWidget           *widget);
 131 static void     gtk_scale_button_popdown        (GtkWidget           *widget);
 132 static gboolean cb_dock_button_press            (GtkWidget           *widget,
 133                                                  GdkEventButton      *event,
 134                                                  gpointer             user_data);
 135 static gboolean cb_dock_key_release             (GtkWidget           *widget,
 136                                                  GdkEventKey         *event,
 137                                                  gpointer             user_data);
 138 static gboolean cb_button_press                 (GtkWidget           *widget,
 139                                                  GdkEventButton      *event,
 140                                                  gpointer             user_data);
 141 static gboolean cb_button_release               (GtkWidget           *widget,
 142                                                  GdkEventButton      *event,
 143                                                  gpointer             user_data);
 144 static void cb_dock_grab_notify                 (GtkWidget           *widget,
 145                                                  gboolean             was_grabbed,
 146                                                  gpointer             user_data);
 147 static gboolean cb_dock_grab_broken_event       (GtkWidget           *widget,
 148                                                  gboolean             was_grabbed,
 149                                                  gpointer             user_data);
 150 static void cb_scale_grab_notify                (GtkWidget           *widget,
 151                                                  gboolean             was_grabbed,
 152                                                  gpointer             user_data);
 153 static void gtk_scale_button_update_icon        (GtkScaleButton      *button);
 154 static void gtk_scale_button_scale_value_changed(GtkRange            *range);
 155
 156 /* see below for scale definitions */
 157 static GtkWidget *gtk_scale_button_scale_new    (GtkScaleButton      *button);
 158
 159 G_DEFINE_TYPE_WITH_CODE (GtkScaleButton, gtk_scale_button, GTK_TYPE_BUTTON,
 160                          G_IMPLEMENT_INTERFACE (GTK_TYPE_ORIENTABLE,
 161                                                 NULL))
 162
 163 static guint signals[LAST_SIGNAL] = { 0, };
 164
 165 static void
 166 gtk_scale_button_class_init (GtkScaleButtonClass *klass)
 167 {
 168   GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
 169   GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
 170   GtkBindingSet *binding_set;
 171
 172   g_type_class_add_private (klass, sizeof (GtkScaleButtonPrivate));
 173
 174   gobject_class->constructor = gtk_scale_button_constructor;
 175   gobject_class->finalize = gtk_scale_button_finalize;
 176   gobject_class->dispose = gtk_scale_button_dispose;
 177   gobject_class->set_property = gtk_scale_button_set_property;
 178   gobject_class->get_property = gtk_scale_button_get_property;
 179
 180   widget_class->button_press_event = gtk_scale_button_press;
 181   widget_class->key_release_event = gtk_scale_button_key_release;
 182   widget_class->scroll_event = gtk_scale_button_scroll;
 183   widget_class->screen_changed = gtk_scale_button_screen_changed;
 184
 185   /**
 186    * GtkScaleButton:orientation:
 187    *
 188    * The orientation of the #GtkScaleButton's popup window.
 189    *
 190    * Note that since GTK+ 2.16, #GtkScaleButton implements the
 191    * #GtkOrientable interface which has its own @orientation
 192    * property. However we redefine the property here in order to
 193    * override its default horizontal orientation.
 194    *
 195    * Since: 2.14
 196    **/
 197   g_object_class_override_property (gobject_class,
 198                                     PROP_ORIENTATION,
 199                                     "orientation");
 200
 201   g_object_class_install_property (gobject_class,
 202                                    PROP_VALUE,
 203                                    g_param_spec_double ("value",
 204                                                         P_("Value"),
 205                                                         P_("The value of the scale"),
 206                                                         -G_MAXDOUBLE,
 207                                                         G_MAXDOUBLE,
 208                                                         0,
 209                                                         GTK_PARAM_READWRITE));
 210
 211   g_object_class_install_property (gobject_class,
 212                                    PROP_SIZE,
 213                                    g_param_spec_enum ("size",
 214                                                       P_("Icon size"),
 215                                                       P_("The icon size"),
 216                                                       GTK_TYPE_ICON_SIZE,
 217                                                       GTK_ICON_SIZE_SMALL_TOOLBAR,
 218                                                       GTK_PARAM_READWRITE));
 219
 220   g_object_class_install_property (gobject_class,
 221                                    PROP_ADJUSTMENT,
 222                                    g_param_spec_object ("adjustment",
 223                                                         P_("Adjustment"),
 224                                                         P_("The GtkAdjustment that contains the current value of this scale button object"),
 225                                                         GTK_TYPE_ADJUSTMENT,
 226                                                         GTK_PARAM_READWRITE));
 227
 228   /**
 229    * GtkScaleButton:icons:
 230    *
 231    * The names of the icons to be used by the scale button.
 232    * The first item in the array will be used in the button
 233    * when the current value is the lowest value, the second
 234    * item for the highest value. All the subsequent icons will
 235    * be used for all the other values, spread evenly over the
 236    * range of values.
 237    *
 238    * If there's only one icon name in the @icons array, it will
 239    * be used for all the values. If only two icon names are in
 240    * the @icons array, the first one will be used for the bottom
 241    * 50% of the scale, and the second one for the top 50%.
 242    *
 243    * It is recommended to use at least 3 icons so that the
 244    * #GtkScaleButton reflects the current value of the scale
 245    * better for the users.
 246    *
 247    * Since: 2.12
 248    */
 249   g_object_class_install_property (gobject_class,
 250                                    PROP_ICONS,
 251                                    g_param_spec_boxed ("icons",
 252                                                        P_("Icons"),
 253                                                        P_("List of icon names"),
 254                                                        G_TYPE_STRV,
 255                                                        GTK_PARAM_READWRITE));
 256
 257   /**
 258    * GtkScaleButton::value-changed:
 259    * @button: the object which received the signal
 260    * @value: the new value
 261    *
 262    * The ::value-changed signal is emitted when the value field has
 263    * changed.
 264    *
 265    * Since: 2.12
 266    */
 267   signals[VALUE_CHANGED] =
 268     g_signal_new (I_("value-changed"),
 269                   G_TYPE_FROM_CLASS (klass),
 270                   G_SIGNAL_RUN_LAST,
 271                   G_STRUCT_OFFSET (GtkScaleButtonClass, value_changed),
 272                   NULL, NULL,
 273                   _gtk_marshal_VOID__DOUBLE,
 274                   G_TYPE_NONE, 1, G_TYPE_DOUBLE);
 275
 276   /**
 277    * GtkScaleButton::popup:
 278    * @button: the object which received the signal
 279    *
 280    * The ::popup signal is a
 281    * <link linkend="keybinding-signals">keybinding signal</link>
 282    * which gets emitted to popup the scale widget.
 283    *
 284    * The default bindings for this signal are Space, Enter and Return.
 285    *
 286    * Since: 2.12
 287    */
 288   signals[POPUP] =
 289     g_signal_new_class_handler (I_("popup"),
 290                                 G_OBJECT_CLASS_TYPE (klass),
 291                                 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 292                                 G_CALLBACK (gtk_scale_button_popup),
 293                                 NULL, NULL,
 294                                 g_cclosure_marshal_VOID__VOID,
 295                                 G_TYPE_NONE, 0);
 296
 297   /**
 298    * GtkScaleButton::popdown:
 299    * @button: the object which received the signal
 300    *
 301    * The ::popdown signal is a
 302    * <link linkend="keybinding-signals">keybinding signal</link>
 303    * which gets emitted to popdown the scale widget.
 304    *
 305    * The default binding for this signal is Escape.
 306    *
 307    * Since: 2.12
 308    */
 309   signals[POPDOWN] =
 310     g_signal_new_class_handler (I_("popdown"),
 311                                 G_OBJECT_CLASS_TYPE (klass),
 312                                 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 313                                 G_CALLBACK (gtk_scale_button_popdown),
 314                                 NULL, NULL,
 315                                 g_cclosure_marshal_VOID__VOID,
 316                                 G_TYPE_NONE, 0);
 317
 318   /* Key bindings */
 319   binding_set = gtk_binding_set_by_class (widget_class);
 320
 321   gtk_binding_entry_add_signal (binding_set, GDK_space, 0,
 322                                 "popup", 0);
 323   gtk_binding_entry_add_signal (binding_set, GDK_KP_Space, 0,
 324                                 "popup", 0);
 325   gtk_binding_entry_add_signal (binding_set, GDK_Return, 0,
 326                                 "popup", 0);
 327   gtk_binding_entry_add_signal (binding_set, GDK_ISO_Enter, 0,
 328                                 "popup", 0);
 329   gtk_binding_entry_add_signal (binding_set, GDK_KP_Enter, 0,
 330                                 "popup", 0);
 331   gtk_binding_entry_add_signal (binding_set, GDK_Escape, 0,
 332                                 "popdown", 0);
 333 }
 334
 335 static void
 336 gtk_scale_button_init (GtkScaleButton *button)
 337 {
 338   GtkScaleButtonPrivate *priv;
 339   GtkWidget *frame;
 340
 341   button->priv = priv = GET_PRIVATE (button);
 342
 343   priv->timeout = FALSE;
 344   priv->click_id = 0;
 345   priv->click_timeout = CLICK_TIMEOUT;
 346   priv->orientation = GTK_ORIENTATION_VERTICAL;
 347
 348   gtk_button_set_relief (GTK_BUTTON (button), GTK_RELIEF_NONE);
 349   gtk_button_set_focus_on_click (GTK_BUTTON (button), FALSE);
 350
 351   /* image */
 352   priv->image = gtk_image_new ();
 353   gtk_container_add (GTK_CONTAINER (button), priv->image);
 354   gtk_widget_show_all (priv->image);
 355
 356   /* window */
 357   priv->dock = gtk_window_new (GTK_WINDOW_POPUP);
 358   gtk_widget_set_name (priv->dock, "gtk-scalebutton-popup-window");
 359   g_signal_connect (priv->dock, "button-press-event",
 360                     G_CALLBACK (cb_dock_button_press), button);
 361   g_signal_connect (priv->dock, "key-release-event",
 362                     G_CALLBACK (cb_dock_key_release), button);
 363   g_signal_connect (priv->dock, "grab-notify",
 364                     G_CALLBACK (cb_dock_grab_notify), button);
 365   g_signal_connect (priv->dock, "grab-broken-event",
 366                     G_CALLBACK (cb_dock_grab_broken_event), button);
 367   gtk_window_set_decorated (GTK_WINDOW (priv->dock), FALSE);
 368
 369   /* frame */
 370   frame = gtk_frame_new (NULL);
 371   gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_OUT);
 372   gtk_container_add (GTK_CONTAINER (priv->dock), frame);
 373
 374   /* box for scale and +/- buttons */
 375   priv->box = gtk_vbox_new (FALSE, 0);
 376   gtk_container_add (GTK_CONTAINER (frame), priv->box);
 377
 378   /* + */
 379   button->plus_button = gtk_button_new_with_label ("+");
 380   gtk_button_set_relief (GTK_BUTTON (button->plus_button), GTK_RELIEF_NONE);
 381   g_signal_connect (button->plus_button, "button-press-event",
 382                     G_CALLBACK (cb_button_press), button);
 383   g_signal_connect (button->plus_button, "button-release-event",
 384                     G_CALLBACK (cb_button_release), button);
 385   gtk_box_pack_start (GTK_BOX (priv->box), button->plus_button, FALSE, FALSE, 0);
 386
 387   /* - */
 388   button->minus_button = gtk_button_new_with_label ("-");
 389   gtk_button_set_relief (GTK_BUTTON (button->minus_button), GTK_RELIEF_NONE);
 390   g_signal_connect (button->minus_button, "button-press-event",
 391                    G_CALLBACK (cb_button_press), button);
 392   g_signal_connect (button->minus_button, "button-release-event",
 393                     G_CALLBACK (cb_button_release), button);
 394   gtk_box_pack_end (GTK_BOX (priv->box), button->minus_button, FALSE, FALSE, 0);
 395
 396   priv->adjustment = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 100.0, 2, 20, 0));
 397   g_object_ref_sink (priv->adjustment);
 398
 399   /* the scale */
 400   priv->scale = gtk_scale_button_scale_new (button);
 401   gtk_container_add (GTK_CONTAINER (priv->box), priv->scale);
 402 }
 403
 404 static GObject *
 405 gtk_scale_button_constructor (GType                  type,
 406                               guint                  n_construct_properties,
 407                               GObjectConstructParam *construct_params)
 408 {
 409   GObject *object;
 410   GtkScaleButton *button;
 411   GtkScaleButtonPrivate *priv;
 412
 413   object = G_OBJECT_CLASS (gtk_scale_button_parent_class)->constructor (type, n_construct_properties, construct_params);
 414
 415   button = GTK_SCALE_BUTTON (object);
 416
 417   priv = button->priv;
 418
 419   /* set button text and size */
 420   priv->size = GTK_ICON_SIZE_SMALL_TOOLBAR;
 421   gtk_scale_button_update_icon (button);
 422
 423   return object;
 424 }
 425
 426 static void
 427 gtk_scale_button_set_property (GObject       *object,
 428                                guint          prop_id,
 429                                const GValue  *value,
 430                                GParamSpec    *pspec)
 431 {
 432   GtkScaleButton *button = GTK_SCALE_BUTTON (object);
 433
 434   switch (prop_id)
 435     {
 436     case PROP_ORIENTATION:
 437       gtk_scale_button_set_orientation (button, g_value_get_enum (value));
 438       break;
 439     case PROP_VALUE:
 440       gtk_scale_button_set_value (button, g_value_get_double (value));
 441       break;
 442     case PROP_SIZE:
 443       {
 444         GtkIconSize size;
 445         size = g_value_get_enum (value);
 446         if (button->priv->size != size)
 447           {
 448             button->priv->size = size;
 449             gtk_scale_button_update_icon (button);
 450           }
 451       }
 452       break;
 453     case PROP_ADJUSTMENT:
 454       gtk_scale_button_set_adjustment (button, g_value_get_object (value));
 455       break;
 456     case PROP_ICONS:
 457       gtk_scale_button_set_icons (button,
 458                                   (const gchar **)g_value_get_boxed (value));
 459       break;
 460     default:
 461       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 462       break;
 463     }
 464 }
 465
 466 static void
 467 gtk_scale_button_get_property (GObject     *object,
 468                                guint        prop_id,
 469                                GValue      *value,
 470                                GParamSpec  *pspec)
 471 {
 472   GtkScaleButton *button = GTK_SCALE_BUTTON (object);
 473   GtkScaleButtonPrivate *priv = button->priv;
 474
 475   switch (prop_id)
 476     {
 477     case PROP_ORIENTATION:
 478       g_value_set_enum (value, priv->orientation);
 479       break;
 480     case PROP_VALUE:
 481       g_value_set_double (value, gtk_scale_button_get_value (button));
 482       break;
 483     case PROP_SIZE:
 484       g_value_set_enum (value, priv->size);
 485       break;
 486     case PROP_ADJUSTMENT:
 487       g_value_set_object (value, gtk_scale_button_get_adjustment (button));
 488       break;
 489     case PROP_ICONS:
 490       g_value_set_boxed (value, priv->icon_list);
 491       break;
 492     default:
 493       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 494       break;
 495     }
 496 }
 497
 498 static void
 499 gtk_scale_button_finalize (GObject *object)
 500 {
 501   GtkScaleButton *button = GTK_SCALE_BUTTON (object);
 502   GtkScaleButtonPrivate *priv = button->priv;
 503
 504   if (priv->icon_list)
 505     {
 506       g_strfreev (priv->icon_list);
 507       priv->icon_list = NULL;
 508     }
 509
 510   if (priv->adjustment)
 511     {
 512       g_object_unref (priv->adjustment);
 513       priv->adjustment = NULL;
 514     }
 515
 516   G_OBJECT_CLASS (gtk_scale_button_parent_class)->finalize (object);
 517 }
 518
 519 static void
 520 gtk_scale_button_dispose (GObject *object)
 521 {
 522   GtkScaleButton *button = GTK_SCALE_BUTTON (object);
 523   GtkScaleButtonPrivate *priv = button->priv;
 524
 525   if (priv->dock)
 526     {
 527       gtk_widget_destroy (priv->dock);
 528       priv->dock = NULL;
 529     }
 530
 531   if (priv->click_id != 0)
 532     {
 533       g_source_remove (priv->click_id);
 534       priv->click_id = 0;
 535     }
 536
 537   G_OBJECT_CLASS (gtk_scale_button_parent_class)->dispose (object);
 538 }
 539
 540 /**
 541  * gtk_scale_button_new:
 542  * @size: a stock icon size
 543  * @min: the minimum value of the scale (usually 0)
 544  * @max: the maximum value of the scale (usually 100)
 545  * @step: the stepping of value when a scroll-wheel event,
 546  *        or up/down arrow event occurs (usually 2)
 547  * @icons: a %NULL-terminated array of icon names, or %NULL if
 548  *         you want to set the list later with gtk_scale_button_set_icons()
 549  *
 550  * Creates a #GtkScaleButton, with a range between @min and @max, with
 551  * a stepping of @step.
 552  *
 553  * Return value: a new #GtkScaleButton
 554  *
 555  * Since: 2.12
 556  */
 557 GtkWidget *
 558 gtk_scale_button_new (GtkIconSize   size,
 559                       gdouble       min,
 560                       gdouble       max,
 561                       gdouble       step,
 562                       const gchar **icons)
 563 {
 564   GtkScaleButton *button;
 565   GtkObject *adj;
 566
 567   adj = gtk_adjustment_new (min, min, max, step, 10 * step, 0);
 568
 569   button = g_object_new (GTK_TYPE_SCALE_BUTTON,
 570                          "adjustment", adj,
 571                          "icons", icons,
 572                          "size", size,
 573                          NULL);
 574
 575   return GTK_WIDGET (button);
 576 }
 577
 578 /**
 579  * gtk_scale_button_get_value:
 580  * @button: a #GtkScaleButton
 581  *
 582  * Gets the current value of the scale button.
 583  *
 584  * Return value: current value of the scale button
 585  *
 586  * Since: 2.12
 587  */
 588 gdouble
 589 gtk_scale_button_get_value (GtkScaleButton * button)
 590 {
 591   GtkScaleButtonPrivate *priv;
 592
 593   g_return_val_if_fail (GTK_IS_SCALE_BUTTON (button), 0);
 594
 595   priv = button->priv;
 596
 597   return gtk_adjustment_get_value (priv->adjustment);
 598 }
 599
 600 /**
 601  * gtk_scale_button_set_value:
 602  * @button: a #GtkScaleButton
 603  * @value: new value of the scale button
 604  *
 605  * Sets the current value of the scale; if the value is outside
 606  * the minimum or maximum range values, it will be clamped to fit
 607  * inside them. The scale button emits the #GtkScaleButton::value-changed
 608  * signal if the value changes.
 609  *
 610  * Since: 2.12
 611  */
 612 void
 613 gtk_scale_button_set_value (GtkScaleButton *button,
 614                             gdouble         value)
 615 {
 616   GtkScaleButtonPrivate *priv;
 617
 618   g_return_if_fail (GTK_IS_SCALE_BUTTON (button));
 619
 620   priv = button->priv;
 621
 622   gtk_range_set_value (GTK_RANGE (priv->scale), value);
 623 }
 624
 625 /**
 626  * gtk_scale_button_set_icons:
 627  * @button: a #GtkScaleButton
 628  * @icons: a %NULL-terminated array of icon names
 629  *
 630  * Sets the icons to be used by the scale button.
 631  * For details, see the #GtkScaleButton:icons property.
 632  *
 633  * Since: 2.12
 634  */
 635 void
 636 gtk_scale_button_set_icons (GtkScaleButton  *button,
 637                             const gchar    **icons)
 638 {
 639   GtkScaleButtonPrivate *priv;
 640   gchar **tmp;
 641
 642   g_return_if_fail (GTK_IS_SCALE_BUTTON (button));
 643
 644   priv = button->priv;
 645
 646   tmp = priv->icon_list;
 647   priv->icon_list = g_strdupv ((gchar **) icons);
 648   g_strfreev (tmp);
 649   gtk_scale_button_update_icon (button);
 650
 651   g_object_notify (G_OBJECT (button), "icons");
 652 }
 653
 654 /**
 655  * gtk_scale_button_get_adjustment:
 656  * @button: a #GtkScaleButton
 657  *
 658  * Gets the #GtkAdjustment associated with the #GtkScaleButton's scale.
 659  * See gtk_range_get_adjustment() for details.
 660  *
 661  * Returns: the adjustment associated with the scale
 662  *
 663  * Since: 2.12
 664  */
 665 GtkAdjustment*
 666 gtk_scale_button_get_adjustment (GtkScaleButton *button)
 667 {
 668   g_return_val_if_fail (GTK_IS_SCALE_BUTTON (button), NULL);
 669
 670   return button->priv->adjustment;
 671 }
 672
 673 /**
 674  * gtk_scale_button_set_adjustment:
 675  * @button: a #GtkScaleButton
 676  * @adjustment: a #GtkAdjustment
 677  *
 678  * Sets the #GtkAdjustment to be used as a model
 679  * for the #GtkScaleButton's scale.
 680  * See gtk_range_set_adjustment() for details.
 681  *
 682  * Since: 2.12
 683  */
 684 void
 685 gtk_scale_button_set_adjustment (GtkScaleButton *button,
 686                                  GtkAdjustment  *adjustment)
 687 {
 688   g_return_if_fail (GTK_IS_SCALE_BUTTON (button));
 689   if (!adjustment)
 690     adjustment = (GtkAdjustment*) gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
 691   else
 692     g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
 693
 694   if (button->priv->adjustment != adjustment)
 695     {
 696       if (button->priv->adjustment)
 697         g_object_unref (button->priv->adjustment);
 698       button->priv->adjustment = g_object_ref_sink (adjustment);
 699
 700       if (button->priv->scale)
 701         gtk_range_set_adjustment (GTK_RANGE (button->priv->scale), adjustment);
 702
 703       g_object_notify (G_OBJECT (button), "adjustment");
 704     }
 705 }
 706
 707 /**
 708  * gtk_scale_button_get_orientation:
 709  * @button: a #GtkScaleButton
 710  *
 711  * Gets the orientation of the #GtkScaleButton's popup window.
 712  *
 713  * Returns: the #GtkScaleButton's orientation.
 714  *
 715  * Since: 2.14
 716  *
 717  * Deprecated: 2.16: Use gtk_orientable_get_orientation() instead.
 718  **/
 719 GtkOrientation
 720 gtk_scale_button_get_orientation (GtkScaleButton *button)
 721 {
 722   g_return_val_if_fail (GTK_IS_SCALE_BUTTON (button), GTK_ORIENTATION_VERTICAL);
 723
 724   return button->priv->orientation;
 725 }
 726
 727 /**
 728  * gtk_scale_button_set_orientation:
 729  * @button: a #GtkScaleButton
 730  * @orientation: the new orientation
 731  *
 732  * Sets the orientation of the #GtkScaleButton's popup window.
 733  *
 734  * Since: 2.14
 735  *
 736  * Deprecated: 2.16: Use gtk_orientable_set_orientation() instead.
 737  **/
 738 void
 739 gtk_scale_button_set_orientation (GtkScaleButton *button,
 740                                   GtkOrientation  orientation)
 741 {
 742   GtkScaleButtonPrivate *priv;
 743
 744   g_return_if_fail (GTK_IS_SCALE_BUTTON (button));
 745
 746   priv = button->priv;
 747
 748   if (orientation != priv->orientation)
 749     {
 750       priv->orientation = orientation;
 751
 752       gtk_orientable_set_orientation (GTK_ORIENTABLE (priv->box),
 753                                       orientation);
 754       gtk_container_child_set (GTK_CONTAINER (priv->box),
 755                                button->plus_button,
 756                                "pack-type",
 757                                orientation == GTK_ORIENTATION_VERTICAL ?
 758                                GTK_PACK_START : GTK_PACK_END,
 759                                NULL);
 760       gtk_container_child_set (GTK_CONTAINER (priv->box),
 761                                button->minus_button,
 762                                "pack-type",
 763                                orientation == GTK_ORIENTATION_VERTICAL ?
 764                                GTK_PACK_END : GTK_PACK_START,
 765                                NULL);
 766
 767       gtk_orientable_set_orientation (GTK_ORIENTABLE (priv->scale),
 768                                       orientation);
 769
 770       if (orientation == GTK_ORIENTATION_VERTICAL)
 771         {
 772           gtk_widget_set_size_request (GTK_WIDGET (priv->scale),
 773                                        -1, SCALE_SIZE);
 774           gtk_range_set_inverted (GTK_RANGE (priv->scale), TRUE);
 775         }
 776       else
 777         {
 778           gtk_widget_set_size_request (GTK_WIDGET (priv->scale),
 779                                        SCALE_SIZE, -1);
 780           gtk_range_set_inverted (GTK_RANGE (priv->scale), FALSE);
 781         }
 782
 783       /* FIXME: without this, the popup window appears as a square
 784        * after changing the orientation
 785        */
 786       gtk_window_resize (GTK_WINDOW (priv->dock), 1, 1);
 787
 788       g_object_notify (G_OBJECT (button), "orientation");
 789     }
 790 }
 791
 792 /**
 793  * gtk_scale_button_get_plus_button:
 794  * @button: a #GtkScaleButton
 795  *
 796  * Retrieves the plus button of the #GtkScaleButton.
 797  *
 798  * Returns: the plus button of the #GtkScaleButton.
 799  *
 800  * Since: 2.14
 801  */
 802 GtkWidget *
 803 gtk_scale_button_get_plus_button (GtkScaleButton *button)
 804 {
 805   g_return_val_if_fail (GTK_IS_SCALE_BUTTON (button), NULL);
 806
 807   return button->plus_button;
 808 }
 809
 810 /**
 811  * gtk_scale_button_get_minus_button:
 812  * @button: a #GtkScaleButton
 813  *
 814  * Retrieves the minus button of the #GtkScaleButton.
 815  *
 816  * Returns: the minus button of the #GtkScaleButton.
 817  *
 818  * Since: 2.14
 819  */
 820 GtkWidget *
 821 gtk_scale_button_get_minus_button (GtkScaleButton *button)
 822 {
 823   g_return_val_if_fail (GTK_IS_SCALE_BUTTON (button), NULL);
 824
 825   return button->minus_button;
 826 }
 827
 828 /**
 829  * gtk_scale_button_get_popup:
 830  * @button: a #GtkScaleButton
 831  *
 832  * Retrieves the popup of the #GtkScaleButton.
 833  *
 834  * Returns: the popup of the #GtkScaleButton
 835  *
 836  * Since: 2.14
 837  */
 838 GtkWidget *
 839 gtk_scale_button_get_popup (GtkScaleButton *button)
 840 {
 841   g_return_val_if_fail (GTK_IS_SCALE_BUTTON (button), NULL);
 842
 843   return button->priv->dock;
 844 }
 845
 846 /*
 847  * button callbacks.
 848  */
 849
 850 static gboolean
 851 gtk_scale_button_scroll (GtkWidget      *widget,
 852                          GdkEventScroll *event)
 853 {
 854   GtkScaleButton *button;
 855   GtkScaleButtonPrivate *priv;
 856   GtkAdjustment *adj;
 857   gdouble d;
 858
 859   button = GTK_SCALE_BUTTON (widget);
 860   priv = button->priv;
 861   adj = priv->adjustment;
 862
 863   if (event->type != GDK_SCROLL)
 864     return FALSE;
 865
 866   d = gtk_scale_button_get_value (button);
 867   if (event->direction == GDK_SCROLL_UP)
 868     {
 869       d += adj->step_increment;
 870       if (d > adj->upper)
 871         d = adj->upper;
 872     }
 873   else
 874     {
 875       d -= adj->step_increment;
 876       if (d < adj->lower)
 877         d = adj->lower;
 878     }
 879   gtk_scale_button_set_value (button, d);
 880
 881   return TRUE;
 882 }
 883
 884 static void
 885 gtk_scale_button_screen_changed (GtkWidget *widget,
 886                                  GdkScreen *previous_screen)
 887 {
 888   GtkScaleButton *button = (GtkScaleButton *) widget;
 889   GtkScaleButtonPrivate *priv;
 890   GdkScreen *screen;
 891   GValue value = { 0, };
 892
 893   if (gtk_widget_has_screen (widget) == FALSE)
 894     return;
 895
 896   priv = button->priv;
 897
 898   screen = gtk_widget_get_screen (widget);
 899   g_value_init (&value, G_TYPE_INT);
 900   if (gdk_screen_get_setting (screen,
 901                               "gtk-double-click-time",
 902                               &value) == FALSE)
 903     {
 904       priv->click_timeout = CLICK_TIMEOUT;
 905       return;
 906     }
 907
 908   priv->click_timeout = g_value_get_int (&value);
 909 }
 910
 911 static gboolean
 912 gtk_scale_popup (GtkWidget *widget,
 913                  GdkEvent  *event,
 914                  guint32    time)
 915 {
 916   GtkScaleButton *button;
 917   GtkScaleButtonPrivate *priv;
 918   GtkAdjustment *adj;
 919   gint x, y, m, dx, dy, sx, sy, startoff;
 920   gdouble v;
 921   GdkDisplay *display;
 922   GdkScreen *screen;
 923
 924   button = GTK_SCALE_BUTTON (widget);
 925   priv = button->priv;
 926   adj = priv->adjustment;
 927
 928   display = gtk_widget_get_display (widget);
 929   screen = gtk_widget_get_screen (widget);
 930
 931   /* position roughly */
 932   gtk_window_set_screen (GTK_WINDOW (priv->dock), screen);
 933
 934   gdk_window_get_origin (widget->window, &x, &y);
 935   x += widget->allocation.x;
 936   y += widget->allocation.y;
 937
 938   if (priv->orientation == GTK_ORIENTATION_VERTICAL)
 939     gtk_window_move (GTK_WINDOW (priv->dock), x, y - (SCALE_SIZE / 2));
 940   else
 941     gtk_window_move (GTK_WINDOW (priv->dock), x - (SCALE_SIZE / 2), y);
 942
 943   gtk_widget_show_all (priv->dock);
 944
 945   gdk_window_get_origin (priv->dock->window, &dx, &dy);
 946   dx += priv->dock->allocation.x;
 947   dy += priv->dock->allocation.y;
 948
 949   gdk_window_get_origin (priv->scale->window, &sx, &sy);
 950   sx += priv->scale->allocation.x;
 951   sy += priv->scale->allocation.y;
 952
 953   priv->timeout = TRUE;
 954
 955   /* position (needs widget to be shown already) */
 956   v = gtk_scale_button_get_value (button) / (adj->upper - adj->lower);
 957
 958   if (priv->orientation == GTK_ORIENTATION_VERTICAL)
 959     {
 960       startoff = sy - dy;
 961
 962       x += (widget->allocation.width - priv->dock->allocation.width) / 2;
 963       y -= startoff;
 964       y -= GTK_RANGE (priv->scale)->min_slider_size / 2;
 965       m = priv->scale->allocation.height -
 966           GTK_RANGE (priv->scale)->min_slider_size;
 967       y -= m * (1.0 - v);
 968     }
 969   else
 970     {
 971       startoff = sx - dx;
 972
 973       x -= startoff;
 974       y += (widget->allocation.height - priv->dock->allocation.height) / 2;
 975       x -= GTK_RANGE (priv->scale)->min_slider_size / 2;
 976       m = priv->scale->allocation.width -
 977           GTK_RANGE (priv->scale)->min_slider_size;
 978       x -= m * v;
 979     }
 980
 981   /* Make sure the dock stays inside the monitor */
 982   if (event->type == GDK_BUTTON_PRESS)
 983     {
 984       int monitor;
 985       GdkEventButton *button_event = (GdkEventButton *) event;
 986       GdkRectangle rect;
 987       GtkWidget *d;
 988
 989       d = GTK_WIDGET (priv->dock);
 990       monitor = gdk_screen_get_monitor_at_point (screen,
 991                                                  button_event->x_root,
 992                                                  button_event->y_root);
 993       gdk_screen_get_monitor_geometry (screen, monitor, &rect);
 994
 995       if (priv->orientation == GTK_ORIENTATION_VERTICAL)
 996         y += button_event->y;
 997       else
 998         x += button_event->x;
 999
1000       if (y < rect.y)
1001         y = rect.y;
1002       else if (y + d->allocation.height > rect.height + rect.y)
1003         y = rect.y + rect.height - d->allocation.height;
1004
1005       if (x < rect.x)
1006         x = rect.x;
1007       else if (x + d->allocation.width > rect.width + rect.x)
1008         x = rect.x + rect.width - d->allocation.width;
1009     }
1010
1011   gtk_window_move (GTK_WINDOW (priv->dock), x, y);
1012
1013   if (event->type == GDK_BUTTON_PRESS)
1014     GTK_WIDGET_CLASS (gtk_scale_button_parent_class)->button_press_event (widget, (GdkEventButton *) event);
1015
1016   /* grab focus */
1017   gtk_grab_add (priv->dock);
1018
1019   if (gdk_pointer_grab (priv->dock->window, TRUE,
1020                         GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK |
1021                         GDK_POINTER_MOTION_MASK, NULL, NULL, time)
1022       != GDK_GRAB_SUCCESS)
1023     {
1024       gtk_grab_remove (priv->dock);
1025       gtk_widget_hide (priv->dock);
1026       return FALSE;
1027     }
1028
1029   if (gdk_keyboard_grab (priv->dock->window, TRUE, time) != GDK_GRAB_SUCCESS)
1030     {
1031       gdk_display_pointer_ungrab (display, time);
1032       gtk_grab_remove (priv->dock);
1033       gtk_widget_hide (priv->dock);
1034       return FALSE;
1035     }
1036
1037   gtk_widget_grab_focus (priv->dock);
1038
1039   if (event->type == GDK_BUTTON_PRESS)
1040     {
1041       GdkEventButton *e;
1042       GdkEventButton *button_event = (GdkEventButton *) event;
1043
1044       /* forward event to the slider */
1045       e = (GdkEventButton *) gdk_event_copy ((GdkEvent *) event);
1046       e->window = priv->scale->window;
1047
1048       /* position: the X position isn't relevant, halfway will work just fine.
1049        * The vertical position should be *exactly* in the middle of the slider
1050        * of the scale; if we don't do that correctly, it'll move from its current
1051        * position, which means a position change on-click, which is bad.
1052        */
1053       if (priv->orientation == GTK_ORIENTATION_VERTICAL)
1054         {
1055           e->x = priv->scale->allocation.width / 2;
1056           m = priv->scale->allocation.height -
1057               GTK_RANGE (priv->scale)->min_slider_size;
1058           e->y = ((1.0 - v) * m) + GTK_RANGE (priv->scale)->min_slider_size / 2;
1059         }
1060       else
1061         {
1062           e->y = priv->scale->allocation.height / 2;
1063           m = priv->scale->allocation.width -
1064               GTK_RANGE (priv->scale)->min_slider_size;
1065           e->x = (v * m) + GTK_RANGE (priv->scale)->min_slider_size / 2;
1066         }
1067
1068       gtk_widget_event (priv->scale, (GdkEvent *) e);
1069       e->window = button_event->window;
1070       gdk_event_free ((GdkEvent *) e);
1071     }
1072
1073   gtk_widget_grab_focus (priv->scale);
1074
1075   priv->pop_time = time;
1076
1077   return TRUE;
1078 }
1079
1080 static gboolean
1081 gtk_scale_button_press (GtkWidget      *widget,
1082                         GdkEventButton *event)
1083 {
1084   return gtk_scale_popup (widget, (GdkEvent *) event, event->time);
1085 }
1086
1087 static void
1088 gtk_scale_button_popup (GtkWidget *widget)
1089 {
1090   GdkEvent *ev;
1091
1092   ev = gdk_event_new (GDK_KEY_RELEASE);
1093   gtk_scale_popup (widget, ev, GDK_CURRENT_TIME);
1094   gdk_event_free (ev);
1095 }
1096
1097 static gboolean
1098 gtk_scale_button_key_release (GtkWidget   *widget,
1099                               GdkEventKey *event)
1100 {
1101   return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
1102 }
1103
1104 /* This is called when the grab is broken for
1105  * either the dock, or the scale itself */
1106 static void
1107 gtk_scale_button_grab_notify (GtkScaleButton *button,
1108                               gboolean        was_grabbed)
1109 {
1110   GdkDisplay *display;
1111   GtkScaleButtonPrivate *priv;
1112
1113   if (was_grabbed != FALSE)
1114     return;
1115
1116   priv = button->priv;
1117
1118   if (!GTK_WIDGET_HAS_GRAB (priv->dock))
1119     return;
1120
1121   if (gtk_widget_is_ancestor (gtk_grab_get_current (), priv->dock))
1122     return;
1123
1124   display = gtk_widget_get_display (priv->dock);
1125   gdk_display_keyboard_ungrab (display, GDK_CURRENT_TIME);
1126   gdk_display_pointer_ungrab (display, GDK_CURRENT_TIME);
1127   gtk_grab_remove (priv->dock);
1128
1129   /* hide again */
1130   gtk_widget_hide (priv->dock);
1131   priv->timeout = FALSE;
1132 }
1133
1134 /*
1135  * +/- button callbacks.
1136  */
1137
1138 static gboolean
1139 cb_button_timeout (gpointer user_data)
1140 {
1141   GtkScaleButton *button;
1142   GtkScaleButtonPrivate *priv;
1143   GtkAdjustment *adj;
1144   gdouble val;
1145   gboolean res = TRUE;
1146
1147   button = GTK_SCALE_BUTTON (user_data);
1148   priv = button->priv;
1149
1150   if (priv->click_id == 0)
1151     return FALSE;
1152
1153   adj = priv->adjustment;
1154
1155   val = gtk_scale_button_get_value (button);
1156   val += priv->direction;
1157   if (val <= adj->lower)
1158     {
1159       res = FALSE;
1160       val = adj->lower;
1161     }
1162   else if (val > adj->upper)
1163     {
1164       res = FALSE;
1165       val = adj->upper;
1166     }
1167   gtk_scale_button_set_value (button, val);
1168
1169   if (!res)
1170     {
1171       g_source_remove (priv->click_id);
1172       priv->click_id = 0;
1173     }
1174
1175   return res;
1176 }
1177
1178 static gboolean
1179 cb_button_press (GtkWidget      *widget,
1180                  GdkEventButton *event,
1181                  gpointer        user_data)
1182 {
1183   GtkScaleButton *button;
1184   GtkScaleButtonPrivate *priv;
1185   GtkAdjustment *adj;
1186
1187   button = GTK_SCALE_BUTTON (user_data);
1188   priv = button->priv;
1189   adj = priv->adjustment;
1190
1191   if (priv->click_id != 0)
1192     g_source_remove (priv->click_id);
1193
1194   if (widget == button->plus_button)
1195     priv->direction = fabs (adj->page_increment);
1196   else
1197     priv->direction = - fabs (adj->page_increment);
1198
1199   priv->click_id = gdk_threads_add_timeout (priv->click_timeout,
1200                                             cb_button_timeout,
1201                                             button);
1202   cb_button_timeout (button);
1203
1204   return TRUE;
1205 }
1206
1207 static gboolean
1208 cb_button_release (GtkWidget      *widget,
1209                    GdkEventButton *event,
1210                    gpointer        user_data)
1211 {
1212   GtkScaleButton *button;
1213   GtkScaleButtonPrivate *priv;
1214
1215   button = GTK_SCALE_BUTTON (user_data);
1216   priv = button->priv;
1217
1218   if (priv->click_id != 0)
1219     {
1220       g_source_remove (priv->click_id);
1221       priv->click_id = 0;
1222     }
1223
1224   return TRUE;
1225 }
1226
1227 static void
1228 cb_dock_grab_notify (GtkWidget *widget,
1229                      gboolean   was_grabbed,
1230                      gpointer   user_data)
1231 {
1232   GtkScaleButton *button = (GtkScaleButton *) user_data;
1233
1234   gtk_scale_button_grab_notify (button, was_grabbed);
1235 }
1236
1237 static gboolean
1238 cb_dock_grab_broken_event (GtkWidget *widget,
1239                            gboolean   was_grabbed,
1240                            gpointer   user_data)
1241 {
1242   GtkScaleButton *button = (GtkScaleButton *) user_data;
1243
1244   gtk_scale_button_grab_notify (button, FALSE);
1245
1246   return FALSE;
1247 }
1248
1249 /*
1250  * Scale callbacks.
1251  */
1252
1253 static void
1254 gtk_scale_button_release_grab (GtkScaleButton *button,
1255                                GdkEventButton *event)
1256 {
1257   GdkEventButton *e;
1258   GdkDisplay *display;
1259   GtkScaleButtonPrivate *priv;
1260
1261   priv = button->priv;
1262
1263   /* ungrab focus */
1264   display = gtk_widget_get_display (GTK_WIDGET (button));
1265   gdk_display_keyboard_ungrab (display, event->time);
1266   gdk_display_pointer_ungrab (display, event->time);
1267   gtk_grab_remove (priv->dock);
1268
1269   /* hide again */
1270   gtk_widget_hide (priv->dock);
1271   priv->timeout = FALSE;
1272
1273   e = (GdkEventButton *) gdk_event_copy ((GdkEvent *) event);
1274   e->window = GTK_WIDGET (button)->window;
1275   e->type = GDK_BUTTON_RELEASE;
1276   gtk_widget_event (GTK_WIDGET (button), (GdkEvent *) e);
1277   e->window = event->window;
1278   gdk_event_free ((GdkEvent *) e);
1279 }
1280
1281 static gboolean
1282 cb_dock_button_press (GtkWidget      *widget,
1283                       GdkEventButton *event,
1284                       gpointer        user_data)
1285 {
1286   GtkScaleButton *button = GTK_SCALE_BUTTON (user_data);
1287
1288   if (event->type == GDK_BUTTON_PRESS)
1289     {
1290       gtk_scale_button_release_grab (button, event);
1291       return TRUE;
1292     }
1293
1294   return FALSE;
1295 }
1296
1297 static void
1298 gtk_scale_button_popdown (GtkWidget *widget)
1299 {
1300   GtkScaleButton *button;
1301   GtkScaleButtonPrivate *priv;
1302   GdkDisplay *display;
1303
1304   button = GTK_SCALE_BUTTON (widget);
1305   priv = button->priv;
1306
1307   /* ungrab focus */
1308   display = gtk_widget_get_display (widget);
1309   gdk_display_keyboard_ungrab (display, GDK_CURRENT_TIME);
1310   gdk_display_pointer_ungrab (display, GDK_CURRENT_TIME);
1311   gtk_grab_remove (priv->dock);
1312
1313   /* hide again */
1314   gtk_widget_hide (priv->dock);
1315   priv->timeout = FALSE;
1316 }
1317
1318 static gboolean
1319 cb_dock_key_release (GtkWidget   *widget,
1320                      GdkEventKey *event,
1321                      gpointer     user_data)
1322 {
1323   if (event->keyval == GDK_Escape)
1324     {
1325       gtk_scale_button_popdown (GTK_WIDGET (user_data));
1326       return TRUE;
1327     }
1328
1329   if (!gtk_bindings_activate_event (GTK_OBJECT (widget), event))
1330     {
1331       /* The popup hasn't managed the event, pass onto the button */
1332       gtk_bindings_activate_event (GTK_OBJECT (user_data), event);
1333     }
1334
1335   return TRUE;
1336 }
1337
1338 static void
1339 cb_scale_grab_notify (GtkWidget *widget,
1340                       gboolean   was_grabbed,
1341                       gpointer   user_data)
1342 {
1343   GtkScaleButton *button = (GtkScaleButton *) user_data;
1344
1345   gtk_scale_button_grab_notify (button, was_grabbed);
1346 }
1347
1348 /*
1349  * Scale stuff.
1350  */
1351
1352 #define GTK_TYPE_SCALE_BUTTON_SCALE    (_gtk_scale_button_scale_get_type ())
1353 #define GTK_SCALE_BUTTON_SCALE(obj)    (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_SCALE_BUTTON_SCALE, GtkScaleButtonScale))
1354 #define GTK_IS_SCALE_BUTTON_SCALE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_SCALE_BUTTON_SCALE))
1355
1356 typedef struct _GtkScaleButtonScale
1357 {
1358   GtkScale parent_instance;
1359   GtkScaleButton *button;
1360 } GtkScaleButtonScale;
1361
1362 typedef struct _GtkScaleButtonScaleClass
1363 {
1364   GtkScaleClass parent_class;
1365 } GtkScaleButtonScaleClass;
1366
1367 static gboolean gtk_scale_button_scale_press   (GtkWidget      *widget,
1368                                                 GdkEventButton *event);
1369 static gboolean gtk_scale_button_scale_release (GtkWidget      *widget,
1370                                                 GdkEventButton *event);
1371
1372 G_DEFINE_TYPE (GtkScaleButtonScale, _gtk_scale_button_scale, GTK_TYPE_SCALE)
1373
1374 static void
1375 _gtk_scale_button_scale_class_init (GtkScaleButtonScaleClass *klass)
1376 {
1377   GtkWidgetClass *gtkwidget_class = GTK_WIDGET_CLASS (klass);
1378   GtkRangeClass *gtkrange_class = GTK_RANGE_CLASS (klass);
1379
1380   gtkwidget_class->button_press_event = gtk_scale_button_scale_press;
1381   gtkwidget_class->button_release_event = gtk_scale_button_scale_release;
1382   gtkrange_class->value_changed = gtk_scale_button_scale_value_changed;
1383 }
1384
1385 static void
1386 _gtk_scale_button_scale_init (GtkScaleButtonScale *scale)
1387 {
1388 }
1389
1390 static GtkWidget *
1391 gtk_scale_button_scale_new (GtkScaleButton *button)
1392 {
1393   GtkScaleButtonPrivate *priv = button->priv;
1394   GtkScaleButtonScale *scale;
1395
1396   scale = g_object_new (GTK_TYPE_SCALE_BUTTON_SCALE,
1397                         "orientation", priv->orientation,
1398                         "adjustment",  priv->adjustment,
1399                         "draw-value",  FALSE,
1400                         NULL);
1401
1402   scale->button = button;
1403
1404   g_signal_connect (scale, "grab-notify",
1405                     G_CALLBACK (cb_scale_grab_notify), button);
1406
1407   if (priv->orientation == GTK_ORIENTATION_VERTICAL)
1408     {
1409       gtk_widget_set_size_request (GTK_WIDGET (scale), -1, SCALE_SIZE);
1410       gtk_range_set_inverted (GTK_RANGE (scale), TRUE);
1411     }
1412   else
1413     {
1414       gtk_widget_set_size_request (GTK_WIDGET (scale), SCALE_SIZE, -1);
1415       gtk_range_set_inverted (GTK_RANGE (scale), FALSE);
1416     }
1417
1418   return GTK_WIDGET (scale);
1419 }
1420
1421 static gboolean
1422 gtk_scale_button_scale_press (GtkWidget      *widget,
1423                               GdkEventButton *event)
1424 {
1425   GtkScaleButtonPrivate *priv = GTK_SCALE_BUTTON_SCALE (widget)->button->priv;
1426
1427   /* the scale will grab input; if we have input grabbed, all goes
1428    * horribly wrong, so let's not do that.
1429    */
1430   gtk_grab_remove (priv->dock);
1431
1432   return GTK_WIDGET_CLASS (_gtk_scale_button_scale_parent_class)->button_press_event (widget, event);
1433 }
1434
1435 static gboolean
1436 gtk_scale_button_scale_release (GtkWidget      *widget,
1437                                 GdkEventButton *event)
1438 {
1439   GtkScaleButton *button = GTK_SCALE_BUTTON_SCALE (widget)->button;
1440   gboolean res;
1441
1442   if (button->priv->timeout)
1443     {
1444       /* if we did a quick click, leave the window open; else, hide it */
1445       if (event->time > button->priv->pop_time + button->priv->click_timeout)
1446         {
1447
1448           gtk_scale_button_release_grab (button, event);
1449           GTK_WIDGET_CLASS (_gtk_scale_button_scale_parent_class)->button_release_event (widget, event);
1450
1451           return TRUE;
1452         }
1453
1454       button->priv->timeout = FALSE;
1455     }
1456
1457   res = GTK_WIDGET_CLASS (_gtk_scale_button_scale_parent_class)->button_release_event (widget, event);
1458
1459   /* the scale will release input; right after that, we *have to* grab
1460    * it back so we can catch out-of-scale clicks and hide the popup,
1461    * so I basically want a g_signal_connect_after_always(), but I can't
1462    * find that, so we do this complex 'first-call-parent-then-do-actual-
1463    * action' thingy...
1464    */
1465   gtk_grab_add (button->priv->dock);
1466
1467   return res;
1468 }
1469
1470 static void
1471 gtk_scale_button_update_icon (GtkScaleButton *button)
1472 {
1473   GtkScaleButtonPrivate *priv;
1474   GtkRange *range;
1475   GtkAdjustment *adj;
1476   gdouble value;
1477   const gchar *name;
1478   guint num_icons;
1479
1480   priv = button->priv;
1481
1482   if (!priv->icon_list || priv->icon_list[0] == '\0')
1483     {
1484       gtk_image_set_from_stock (GTK_IMAGE (priv->image),
1485                                 GTK_STOCK_MISSING_IMAGE,
1486                                 priv->size);
1487       return;
1488     }
1489
1490   num_icons = g_strv_length (priv->icon_list);
1491
1492   /* The 1-icon special case */
1493   if (num_icons == 1)
1494     {
1495       gtk_image_set_from_icon_name (GTK_IMAGE (priv->image),
1496                                     priv->icon_list[0],
1497                                     priv->size);
1498       return;
1499     }
1500
1501   range = GTK_RANGE (priv->scale);
1502   adj = priv->adjustment;
1503   value = gtk_scale_button_get_value (button);
1504
1505   /* The 2-icons special case */
1506   if (num_icons == 2)
1507     {
1508       gdouble limit;
1509       limit = (adj->upper - adj->lower) / 2 + adj->lower;
1510       if (value < limit)
1511         name = priv->icon_list[0];
1512       else
1513         name = priv->icon_list[1];
1514
1515       gtk_image_set_from_icon_name (GTK_IMAGE (priv->image),
1516                                     name,
1517                                     priv->size);
1518       return;
1519     }
1520
1521   /* With 3 or more icons */
1522   if (value == adj->lower)
1523     {
1524       name = priv->icon_list[0];
1525     }
1526   else if (value == adj->upper)
1527     {
1528       name = priv->icon_list[1];
1529     }
1530   else
1531     {
1532       gdouble step;
1533       guint i;
1534
1535       step = (adj->upper - adj->lower) / (num_icons - 2);
1536       i = (guint) ((value - adj->lower) / step) + 2;
1537       g_assert (i < num_icons);
1538       name = priv->icon_list[i];
1539     }
1540
1541   gtk_image_set_from_icon_name (GTK_IMAGE (priv->image),
1542                                 name,
1543                                 priv->size);
1544 }
1545
1546 static void
1547 gtk_scale_button_scale_value_changed (GtkRange *range)
1548 {
1549   GtkScaleButton *button = GTK_SCALE_BUTTON_SCALE (range)->button;
1550   gdouble value;
1551
1552   value = gtk_range_get_value (range);
1553
1554   gtk_scale_button_update_icon (button);
1555
1556   g_signal_emit (button, signals[VALUE_CHANGED], 0, value);
1557   g_object_notify (G_OBJECT (button), "value");
1558 }
1559
1560 #define __GTK_SCALE_BUTTON_C__
1561 #include "gtkaliasdef.c"