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 #define _GNU_SOURCE
  39 #include <math.h>
  40 #include <stdlib.h>
  41 #include <string.h>
  42
  43 #include <gdk-pixbuf/gdk-pixbuf.h>
  44 #include <gdk/gdkkeysyms.h>
  45
  46 #include "gtkmain.h"
  47 #include "gtkintl.h"
  48 #include "gtkbindings.h"
  49 #include "gtkhscale.h"
  50 #include "gtkvscale.h"
  51 #include "gtkframe.h"
  52 #include "gtkhbox.h"
  53 #include "gtkvbox.h"
  54 #include "gtkwindow.h"
  55 #include "gtkmarshalers.h"
  56 #include "gtkstock.h"
  57 #include "gtkprivate.h"
  58 #include "gtkscalebutton.h"
  59
  60 #include "gtkalias.h"
  61
  62 #define SCALE_SIZE 100
  63 #define CLICK_TIMEOUT 250
  64
  65 enum
  66 {
  67   VALUE_CHANGED,
  68   POPUP,
  69   POPDOWN,
  70
  71   LAST_SIGNAL
  72 };
  73
  74 enum
  75 {
  76   PROP_0,
  77
  78   PROP_ORIENTATION,
  79   PROP_VALUE,
  80   PROP_SIZE,
  81   PROP_ADJUSTMENT,
  82   PROP_ICONS
  83 };
  84
  85 #define GET_PRIVATE(obj)        (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GTK_TYPE_SCALE_BUTTON, GtkScaleButtonPrivate))
  86
  87 struct _GtkScaleButtonPrivate
  88 {
  89   GtkWidget *dock;
  90   GtkWidget *scale;
  91   GtkWidget *image;
  92
  93   GtkIconSize size;
  94   GtkOrientation orientation;
  95
  96   guint click_id;
  97   gint click_timeout;
  98   guint timeout : 1;
  99   gdouble direction;
 100   guint32 pop_time;
 101
 102   gchar **icon_list;
 103
 104   GtkAdjustment *adjustment; /* needed because it must be settable in init() */
 105 };
 106
 107 static GObject* gtk_scale_button_constructor    (GType                  type,
 108                                                  guint                  n_construct_properties,
 109                                                  GObjectConstructParam *construct_params);
 110 static void     gtk_scale_button_dispose        (GObject             *object);
 111 static void     gtk_scale_button_finalize       (GObject             *object);
 112 static void     gtk_scale_button_set_property   (GObject             *object,
 113                                                  guint                prop_id,
 114                                                  const GValue        *value,
 115                                                  GParamSpec          *pspec);
 116 static void     gtk_scale_button_get_property   (GObject             *object,
 117                                                  guint                prop_id,
 118                                                  GValue              *value,
 119                                                  GParamSpec          *pspec);
 120 static gboolean gtk_scale_button_scroll         (GtkWidget           *widget,
 121                                                  GdkEventScroll      *event);
 122 static void gtk_scale_button_screen_changed     (GtkWidget           *widget,
 123                                                  GdkScreen           *previous_screen);
 124 static gboolean gtk_scale_button_press          (GtkWidget           *widget,
 125                                                  GdkEventButton      *event);
 126 static gboolean gtk_scale_button_key_release    (GtkWidget           *widget,
 127                                                  GdkEventKey         *event);
 128 static void     gtk_scale_button_popup          (GtkWidget           *widget);
 129 static void     gtk_scale_button_popdown        (GtkWidget           *widget);
 130 static gboolean cb_dock_button_press            (GtkWidget           *widget,
 131                                                  GdkEventButton      *event,
 132                                                  gpointer             user_data);
 133 static gboolean cb_dock_key_release             (GtkWidget           *widget,
 134                                                  GdkEventKey         *event,
 135                                                  gpointer             user_data);
 136 static gboolean cb_button_press                 (GtkWidget           *widget,
 137                                                  GdkEventButton      *event,
 138                                                  gpointer             user_data);
 139 static gboolean cb_button_release               (GtkWidget           *widget,
 140                                                  GdkEventButton      *event,
 141                                                  gpointer             user_data);
 142 static void cb_dock_grab_notify                 (GtkWidget           *widget,
 143                                                  gboolean             was_grabbed,
 144                                                  gpointer             user_data);
 145 static gboolean cb_dock_grab_broken_event       (GtkWidget           *widget,
 146                                                  gboolean             was_grabbed,
 147                                                  gpointer             user_data);
 148 static void cb_scale_grab_notify                (GtkWidget           *widget,
 149                                                  gboolean             was_grabbed,
 150                                                  gpointer             user_data);
 151 static void gtk_scale_button_update_icon        (GtkScaleButton      *button);
 152 static void gtk_scale_button_scale_value_changed(GtkRange            *range);
 153
 154 /* see below for scale definitions */
 155 static GtkWidget *gtk_scale_button_scale_box_new(GtkScaleButton      *button);
 156
 157 static guint signals[LAST_SIGNAL] = { 0, };
 158
 159 G_DEFINE_TYPE (GtkScaleButton, gtk_scale_button, GTK_TYPE_BUTTON)
 160
 161 static void
 162 gtk_scale_button_class_init (GtkScaleButtonClass *klass)
 163 {
 164   GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
 165   GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
 166   GtkBindingSet *binding_set;
 167
 168   g_type_class_add_private (klass, sizeof (GtkScaleButtonPrivate));
 169
 170   gobject_class->constructor = gtk_scale_button_constructor;
 171   gobject_class->finalize = gtk_scale_button_finalize;
 172   gobject_class->dispose = gtk_scale_button_dispose;
 173   gobject_class->set_property = gtk_scale_button_set_property;
 174   gobject_class->get_property = gtk_scale_button_get_property;
 175
 176   widget_class->button_press_event = gtk_scale_button_press;
 177   widget_class->key_release_event = gtk_scale_button_key_release;
 178   widget_class->scroll_event = gtk_scale_button_scroll;
 179   widget_class->screen_changed = gtk_scale_button_screen_changed;
 180
 181   /**
 182    * GtkScaleButton:orientation:
 183    *
 184    * The orientation of the #GtkScaleButton's popup window.
 185    *
 186    * Since: 2.14
 187    **/
 188   g_object_class_install_property (gobject_class,
 189                                    PROP_ORIENTATION,
 190                                    g_param_spec_enum ("orientation",
 191                                                       P_("Orientation"),
 192                                                       P_("The orientation of the scale"),
 193                                                       GTK_TYPE_ORIENTATION,
 194                                                       GTK_ORIENTATION_VERTICAL,
 195                                                       GTK_PARAM_READWRITE));
 196
 197   g_object_class_install_property (gobject_class,
 198                                    PROP_VALUE,
 199                                    g_param_spec_double ("value",
 200                                                         P_("Value"),
 201                                                         P_("The value of the scale"),
 202                                                         -G_MAXDOUBLE,
 203                                                         G_MAXDOUBLE,
 204                                                         0,
 205                                                         GTK_PARAM_READWRITE));
 206
 207   g_object_class_install_property (gobject_class,
 208                                    PROP_SIZE,
 209                                    g_param_spec_enum ("size",
 210                                                       P_("Icon size"),
 211                                                       P_("The icon size"),
 212                                                       GTK_TYPE_ICON_SIZE,
 213                                                       GTK_ICON_SIZE_SMALL_TOOLBAR,
 214                                                       GTK_PARAM_READWRITE));
 215
 216   g_object_class_install_property (gobject_class,
 217                                    PROP_ADJUSTMENT,
 218                                    g_param_spec_object ("adjustment",
 219                                                         P_("Adjustment"),
 220                                                         P_("The GtkAdjustment that contains the current value of this scale button object"),
 221                                                         GTK_TYPE_ADJUSTMENT,
 222                                                         GTK_PARAM_READWRITE));
 223
 224   /**
 225    * GtkScaleButton:icons:
 226    *
 227    * The names of the icons to be used by the scale button.
 228    * The first item in the array will be used in the button
 229    * when the current value is the lowest value, the second
 230    * item for the highest value. All the subsequent icons will
 231    * be used for all the other values, spread evenly over the
 232    * range of values.
 233    *
 234    * If there's only one icon name in the @icons array, it will
 235    * be used for all the values. If only two icon names are in
 236    * the @icons array, the first one will be used for the bottom
 237    * 50% of the scale, and the second one for the top 50%.
 238    *
 239    * It is recommended to use at least 3 icons so that the
 240    * #GtkScaleButton reflects the current value of the scale
 241    * better for the users.
 242    *
 243    * Since: 2.12
 244    */
 245   g_object_class_install_property (gobject_class,
 246                                    PROP_ICONS,
 247                                    g_param_spec_boxed ("icons",
 248                                                        P_("Icons"),
 249                                                        P_("List of icon names"),
 250                                                        G_TYPE_STRV,
 251                                                        GTK_PARAM_READWRITE));
 252
 253   /**
 254    * GtkScaleButton::value-changed:
 255    * @button: the object which received the signal
 256    * @value: the new value
 257    *
 258    * The ::value-changed signal is emitted when the value field has
 259    * changed.
 260    *
 261    * Since: 2.12
 262    */
 263   signals[VALUE_CHANGED] =
 264     g_signal_new (I_("value-changed"),
 265                   G_TYPE_FROM_CLASS (klass),
 266                   G_SIGNAL_RUN_LAST,
 267                   G_STRUCT_OFFSET (GtkScaleButtonClass, value_changed),
 268                   NULL, NULL,
 269                   _gtk_marshal_VOID__DOUBLE,
 270                   G_TYPE_NONE, 1, G_TYPE_DOUBLE);
 271
 272   /**
 273    * GtkScaleButton::popup:
 274    * @button: the object which received the signal
 275    *
 276    * The ::popup signal is a
 277    * <link linkend="keybinding-signals">keybinding signal</link>
 278    * which gets emitted to popup the scale widget.
 279    *
 280    * The default bindings for this signal are Space, Enter and Return.
 281    *
 282    * Since: 2.12
 283    */
 284   signals[POPUP] =
 285     _gtk_binding_signal_new (I_("popup"),
 286                              G_OBJECT_CLASS_TYPE (klass),
 287                              G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 288                              G_CALLBACK (gtk_scale_button_popup),
 289                              NULL, NULL,
 290                              g_cclosure_marshal_VOID__VOID,
 291                              G_TYPE_NONE, 0);
 292
 293   /**
 294    * GtkScaleButton::popdown:
 295    * @button: the object which received the signal
 296    *
 297    * The ::popdown signal is a
 298    * <link linkend="keybinding-signals">keybinding signal</link>
 299    * which gets emitted to popdown the scale widget.
 300    *
 301    * The default binding for this signal is Escape.
 302    *
 303    * Since: 2.12
 304    */
 305   signals[POPDOWN] =
 306     _gtk_binding_signal_new (I_("popdown"),
 307                              G_OBJECT_CLASS_TYPE (klass),
 308                              G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 309                              G_CALLBACK (gtk_scale_button_popdown),
 310                              NULL, NULL,
 311                              g_cclosure_marshal_VOID__VOID,
 312                              G_TYPE_NONE, 0);
 313
 314   /* Key bindings */
 315   binding_set = gtk_binding_set_by_class (widget_class);
 316
 317   gtk_binding_entry_add_signal (binding_set, GDK_space, 0,
 318                                 "popup", 0);
 319   gtk_binding_entry_add_signal (binding_set, GDK_KP_Space, 0,
 320                                 "popup", 0);
 321   gtk_binding_entry_add_signal (binding_set, GDK_Return, 0,
 322                                 "popup", 0);
 323   gtk_binding_entry_add_signal (binding_set, GDK_ISO_Enter, 0,
 324                                 "popup", 0);
 325   gtk_binding_entry_add_signal (binding_set, GDK_KP_Enter, 0,
 326                                 "popup", 0);
 327   gtk_binding_entry_add_signal (binding_set, GDK_Escape, 0,
 328                                 "popdown", 0);
 329 }
 330
 331 static void
 332 gtk_scale_button_init (GtkScaleButton *button)
 333 {
 334   GtkScaleButtonPrivate *priv;
 335
 336   button->priv = priv = GET_PRIVATE (button);
 337
 338   priv->timeout = FALSE;
 339   priv->click_id = 0;
 340   priv->click_timeout = CLICK_TIMEOUT;
 341   priv->orientation = GTK_ORIENTATION_VERTICAL;
 342
 343   gtk_button_set_relief (GTK_BUTTON (button), GTK_RELIEF_NONE);
 344   gtk_button_set_focus_on_click (GTK_BUTTON (button), FALSE);
 345
 346   /* image */
 347   priv->image = gtk_image_new ();
 348   gtk_container_add (GTK_CONTAINER (button), priv->image);
 349   gtk_widget_show_all (priv->image);
 350
 351   /* window */
 352   priv->dock = gtk_window_new (GTK_WINDOW_POPUP);
 353   gtk_widget_set_name (priv->dock, "gtk-scalebutton-popup-window");
 354   g_signal_connect (priv->dock, "button-press-event",
 355                     G_CALLBACK (cb_dock_button_press), button);
 356   g_signal_connect (priv->dock, "key-release-event",
 357                     G_CALLBACK (cb_dock_key_release), button);
 358   g_signal_connect (priv->dock, "grab-notify",
 359                     G_CALLBACK (cb_dock_grab_notify), button);
 360   g_signal_connect (priv->dock, "grab-broken-event",
 361                     G_CALLBACK (cb_dock_grab_broken_event), button);
 362   gtk_window_set_decorated (GTK_WINDOW (priv->dock), FALSE);
 363
 364   /* + */
 365   button->plus_button = gtk_button_new_with_label ("+");
 366   gtk_button_set_relief (GTK_BUTTON (button->plus_button), GTK_RELIEF_NONE);
 367   g_signal_connect (button->plus_button, "button-press-event",
 368                     G_CALLBACK (cb_button_press), button);
 369   g_signal_connect (button->plus_button, "button-release-event",
 370                     G_CALLBACK (cb_button_release), button);
 371
 372   /* - */
 373   button->minus_button = gtk_button_new_with_label ("-");
 374   gtk_button_set_relief (GTK_BUTTON (button->minus_button), GTK_RELIEF_NONE);
 375   g_signal_connect (button->minus_button, "button-press-event",
 376                    G_CALLBACK (cb_button_press), button);
 377   g_signal_connect (button->minus_button, "button-release-event",
 378                     G_CALLBACK (cb_button_release), button);
 379
 380   priv->adjustment = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 100.0, 2, 20, 0));
 381   g_object_ref_sink (priv->adjustment);
 382 }
 383
 384 static GObject *
 385 gtk_scale_button_constructor (GType                  type,
 386                               guint                  n_construct_properties,
 387                               GObjectConstructParam *construct_params)
 388 {
 389   GObject *object;
 390   GtkScaleButton *button;
 391   GtkWidget *frame, *box;
 392   GtkScaleButtonPrivate *priv;
 393
 394   object = G_OBJECT_CLASS (gtk_scale_button_parent_class)->constructor (type, n_construct_properties, construct_params);
 395
 396   button = GTK_SCALE_BUTTON (object);
 397
 398   priv = button->priv;
 399
 400   /* frame */
 401   frame = gtk_frame_new (NULL);
 402   gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_OUT);
 403   gtk_container_add (GTK_CONTAINER (priv->dock), frame);
 404
 405   /* box with scale and +/- buttons */
 406   box = gtk_scale_button_scale_box_new (button);
 407   gtk_container_add (GTK_CONTAINER (frame), box);
 408
 409   /* set button text and size */
 410   priv->size = GTK_ICON_SIZE_SMALL_TOOLBAR;
 411   gtk_scale_button_update_icon (button);
 412
 413   return object;
 414 }
 415
 416 static void
 417 gtk_scale_button_set_property (GObject       *object,
 418                                guint          prop_id,
 419                                const GValue  *value,
 420                                GParamSpec    *pspec)
 421 {
 422   GtkScaleButton *button = GTK_SCALE_BUTTON (object);
 423
 424   switch (prop_id)
 425     {
 426     case PROP_ORIENTATION:
 427       gtk_scale_button_set_orientation (button, g_value_get_enum (value));
 428       break;
 429     case PROP_VALUE:
 430       gtk_scale_button_set_value (button, g_value_get_double (value));
 431       break;
 432     case PROP_SIZE:
 433       {
 434         GtkIconSize size;
 435         size = g_value_get_enum (value);
 436         if (button->priv->size != size)
 437           {
 438             button->priv->size = size;
 439             gtk_scale_button_update_icon (button);
 440           }
 441       }
 442       break;
 443     case PROP_ADJUSTMENT:
 444       gtk_scale_button_set_adjustment (button, g_value_get_object (value));
 445       break;
 446     case PROP_ICONS:
 447       gtk_scale_button_set_icons (button,
 448                                   (const gchar **)g_value_get_boxed (value));
 449       break;
 450     default:
 451       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 452       break;
 453     }
 454 }
 455
 456 static void
 457 gtk_scale_button_get_property (GObject     *object,
 458                                guint        prop_id,
 459                                GValue      *value,
 460                                GParamSpec  *pspec)
 461 {
 462   GtkScaleButton *button = GTK_SCALE_BUTTON (object);
 463   GtkScaleButtonPrivate *priv = button->priv;
 464
 465   switch (prop_id)
 466     {
 467     case PROP_ORIENTATION:
 468       g_value_set_enum (value, priv->orientation);
 469       break;
 470     case PROP_VALUE:
 471       g_value_set_double (value, gtk_scale_button_get_value (button));
 472       break;
 473     case PROP_SIZE:
 474       g_value_set_enum (value, priv->size);
 475       break;
 476     case PROP_ADJUSTMENT:
 477       g_value_set_object (value, gtk_scale_button_get_adjustment (button));
 478       break;
 479     case PROP_ICONS:
 480       g_value_set_boxed (value, priv->icon_list);
 481       break;
 482     default:
 483       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 484       break;
 485     }
 486 }
 487
 488 static void
 489 gtk_scale_button_finalize (GObject *object)
 490 {
 491   GtkScaleButton *button = GTK_SCALE_BUTTON (object);
 492   GtkScaleButtonPrivate *priv = button->priv;
 493
 494   if (priv->icon_list)
 495     {
 496       g_strfreev (priv->icon_list);
 497       priv->icon_list = NULL;
 498     }
 499
 500   if (priv->adjustment)
 501     {
 502       g_object_unref (priv->adjustment);
 503       priv->adjustment = NULL;
 504     }
 505
 506   G_OBJECT_CLASS (gtk_scale_button_parent_class)->finalize (object);
 507 }
 508
 509 static void
 510 gtk_scale_button_dispose (GObject *object)
 511 {
 512   GtkScaleButton *button = GTK_SCALE_BUTTON (object);
 513   GtkScaleButtonPrivate *priv = button->priv;
 514
 515   if (priv->dock)
 516     {
 517       gtk_widget_destroy (priv->dock);
 518       priv->dock = NULL;
 519     }
 520
 521   if (priv->click_id != 0)
 522     {
 523       g_source_remove (priv->click_id);
 524       priv->click_id = 0;
 525     }
 526
 527   G_OBJECT_CLASS (gtk_scale_button_parent_class)->dispose (object);
 528 }
 529
 530 /**
 531  * gtk_scale_button_new:
 532  * @size: a stock icon size
 533  * @min: the minimum value of the scale (usually 0)
 534  * @max: the maximum value of the scale (usually 100)
 535  * @step: the stepping of value when a scroll-wheel event,
 536  *        or up/down arrow event occurs (usually 2)
 537  * @icons: a %NULL-terminated array of icon names, or %NULL if
 538  *         you want to set the list later with gtk_scale_button_set_icons()
 539  *
 540  * Creates a #GtkScaleButton, with a range between @min and @max, with
 541  * a stepping of @step.
 542  *
 543  * Return value: a new #GtkScaleButton
 544  *
 545  * Since: 2.12
 546  */
 547 GtkWidget *
 548 gtk_scale_button_new (GtkIconSize   size,
 549                       gdouble       min,
 550                       gdouble       max,
 551                       gdouble       step,
 552                       const gchar **icons)
 553 {
 554   GtkScaleButton *button;
 555   GtkObject *adj;
 556
 557   adj = gtk_adjustment_new (min, min, max, step, 10 * step, 0);
 558
 559   button = g_object_new (GTK_TYPE_SCALE_BUTTON,
 560                          "adjustment", adj,
 561                          "icons", icons,
 562                          "size", size,
 563                          NULL);
 564
 565   return GTK_WIDGET (button);
 566 }
 567
 568 /**
 569  * gtk_scale_button_get_value:
 570  * @button: a #GtkScaleButton
 571  *
 572  * Gets the current value of the scale button.
 573  *
 574  * Return value: current value of the scale button
 575  *
 576  * Since: 2.12
 577  */
 578 gdouble
 579 gtk_scale_button_get_value (GtkScaleButton * button)
 580 {
 581   GtkScaleButtonPrivate *priv;
 582
 583   g_return_val_if_fail (GTK_IS_SCALE_BUTTON (button), 0);
 584
 585   priv = button->priv;
 586
 587   return gtk_adjustment_get_value (priv->adjustment);
 588 }
 589
 590 /**
 591  * gtk_scale_button_set_value:
 592  * @button: a #GtkScaleButton
 593  * @value: new value of the scale button
 594  *
 595  * Sets the current value of the scale; if the value is outside
 596  * the minimum or maximum range values, it will be clamped to fit
 597  * inside them. The scale button emits the #GtkScaleButton::value-changed
 598  * signal if the value changes.
 599  *
 600  * Since: 2.12
 601  */
 602 void
 603 gtk_scale_button_set_value (GtkScaleButton *button,
 604                             gdouble         value)
 605 {
 606   GtkScaleButtonPrivate *priv;
 607
 608   g_return_if_fail (GTK_IS_SCALE_BUTTON (button));
 609
 610   priv = button->priv;
 611
 612   gtk_range_set_value (GTK_RANGE (priv->scale), value);
 613 }
 614
 615 /**
 616  * gtk_scale_button_set_icons:
 617  * @button: a #GtkScaleButton
 618  * @icons: a %NULL-terminated array of icon names
 619  *
 620  * Sets the icons to be used by the scale button.
 621  * For details, see the #GtkScaleButton:icons property.
 622  *
 623  * Since: 2.12
 624  */
 625 void
 626 gtk_scale_button_set_icons (GtkScaleButton  *button,
 627                             const gchar    **icons)
 628 {
 629   GtkScaleButtonPrivate *priv;
 630   gchar **tmp;
 631
 632   g_return_if_fail (GTK_IS_SCALE_BUTTON (button));
 633
 634   priv = button->priv;
 635
 636   tmp = priv->icon_list;
 637   priv->icon_list = g_strdupv ((gchar **) icons);
 638   g_strfreev (tmp);
 639   gtk_scale_button_update_icon (button);
 640
 641   g_object_notify (G_OBJECT (button), "icons");
 642 }
 643
 644 /**
 645  * gtk_scale_button_get_adjustment:
 646  * @button: a #GtkScaleButton
 647  *
 648  * Gets the #GtkAdjustment associated with the #GtkScaleButton's scale.
 649  * See gtk_range_get_adjustment() for details.
 650  *
 651  * Returns: the adjustment associated with the scale
 652  *
 653  * Since: 2.12
 654  */
 655 GtkAdjustment*
 656 gtk_scale_button_get_adjustment (GtkScaleButton *button)
 657 {
 658   g_return_val_if_fail (GTK_IS_SCALE_BUTTON (button), NULL);
 659
 660   return button->priv->adjustment;
 661 }
 662
 663 /**
 664  * gtk_scale_button_set_adjustment:
 665  * @button: a #GtkScaleButton
 666  * @adjustment: a #GtkAdjustment
 667  *
 668  * Sets the #GtkAdjustment to be used as a model
 669  * for the #GtkScaleButton's scale.
 670  * See gtk_range_set_adjustment() for details.
 671  *
 672  * Since: 2.12
 673  */
 674 void
 675 gtk_scale_button_set_adjustment (GtkScaleButton *button,
 676                                  GtkAdjustment  *adjustment)
 677 {
 678   g_return_if_fail (GTK_IS_SCALE_BUTTON (button));
 679   g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
 680
 681   if (button->priv->adjustment)
 682     g_object_unref (button->priv->adjustment);
 683   button->priv->adjustment = g_object_ref_sink (adjustment);
 684
 685   if (button->priv->scale)
 686     gtk_range_set_adjustment (GTK_RANGE (button->priv->scale), adjustment);
 687
 688   g_object_notify (G_OBJECT (button), "adjustment");
 689 }
 690
 691 /**
 692  * gtk_scale_button_get_orientation:
 693  * @button: a #GtkScaleButton
 694  *
 695  * Gets the orientation of the #GtkScaleButton's popup window.
 696  *
 697  * Returns: the #GtkScaleButton's orientation.
 698  *
 699  * Since: 2.14
 700  **/
 701 GtkOrientation
 702 gtk_scale_button_get_orientation (GtkScaleButton *button)
 703 {
 704   g_return_val_if_fail (GTK_IS_SCALE_BUTTON (button), GTK_ORIENTATION_VERTICAL);
 705
 706   return button->priv->orientation;
 707 }
 708
 709 /**
 710  * gtk_scale_button_set_orientation:
 711  * @button: a #GtkScaleButton
 712  * @orientation: the new orientation
 713  *
 714  * Sets the orientation of the #GtkScaleButton's popup window.
 715  *
 716  * Since: 2.14
 717  **/
 718 void
 719 gtk_scale_button_set_orientation (GtkScaleButton *button,
 720                                   GtkOrientation  orientation)
 721 {
 722   GtkScaleButtonPrivate *priv;
 723
 724   g_return_if_fail (GTK_IS_SCALE_BUTTON (button));
 725
 726   priv = button->priv;
 727
 728   if (orientation != priv->orientation)
 729     {
 730       priv->orientation = orientation;
 731
 732       if (priv->scale)
 733         {
 734           GtkWidget *box = priv->scale->parent;
 735           GtkWidget *frame = box->parent;
 736
 737           g_object_ref (button->plus_button);
 738           g_object_ref (button->minus_button);
 739
 740           gtk_container_remove (GTK_CONTAINER (box), button->plus_button);
 741           gtk_container_remove (GTK_CONTAINER (box), button->minus_button);
 742           gtk_container_remove (GTK_CONTAINER (box), priv->scale);
 743           gtk_container_remove (GTK_CONTAINER (frame), box);
 744
 745           box = gtk_scale_button_scale_box_new (button);
 746           gtk_container_add (GTK_CONTAINER (frame), box);
 747
 748           /* FIXME: without this, the popup window appears as a square
 749            * after changing the orientation
 750            */
 751           gtk_window_resize (GTK_WINDOW (priv->dock), 1, 1);
 752
 753           g_object_unref (button->plus_button);
 754           g_object_unref (button->minus_button);
 755         }
 756
 757       g_object_notify (G_OBJECT (button), "orientation");
 758     }
 759 }
 760
 761 /**
 762  * gtk_scale_button_get_popup:
 763  * @button: a #GtkScaleButton
 764  *
 765  * Retrieves the popup of the #GtkScaleButton.
 766  *
 767  * Since: 2.14
 768  */
 769 GtkWidget*
 770 gtk_scale_button_get_popup (GtkScaleButton *button)
 771 {
 772   g_return_if_fail (GTK_IS_SCALE_BUTTON (button));
 773
 774   return button->priv->dock;
 775 }
 776
 777 /*
 778  * button callbacks.
 779  */
 780
 781 static gboolean
 782 gtk_scale_button_scroll (GtkWidget      *widget,
 783                          GdkEventScroll *event)
 784 {
 785   GtkScaleButton *button;
 786   GtkScaleButtonPrivate *priv;
 787   GtkAdjustment *adj;
 788   gdouble d;
 789
 790   button = GTK_SCALE_BUTTON (widget);
 791   priv = button->priv;
 792   adj = priv->adjustment;
 793
 794   if (event->type != GDK_SCROLL)
 795     return FALSE;
 796
 797   d = gtk_scale_button_get_value (button);
 798   if (event->direction == GDK_SCROLL_UP)
 799     {
 800       d += adj->step_increment;
 801       if (d > adj->upper)
 802         d = adj->upper;
 803     }
 804   else
 805     {
 806       d -= adj->step_increment;
 807       if (d < adj->lower)
 808         d = adj->lower;
 809     }
 810   gtk_scale_button_set_value (button, d);
 811
 812   return TRUE;
 813 }
 814
 815 static void
 816 gtk_scale_button_screen_changed (GtkWidget *widget,
 817                                  GdkScreen *previous_screen)
 818 {
 819   GtkScaleButton *button = (GtkScaleButton *) widget;
 820   GtkScaleButtonPrivate *priv;
 821   GdkScreen *screen;
 822   GValue value = { 0, };
 823
 824   if (gtk_widget_has_screen (widget) == FALSE)
 825     return;
 826
 827   priv = button->priv;
 828
 829   screen = gtk_widget_get_screen (widget);
 830   g_value_init (&value, G_TYPE_INT);
 831   if (gdk_screen_get_setting (screen,
 832                               "gtk-double-click-time",
 833                               &value) == FALSE)
 834     {
 835       priv->click_timeout = CLICK_TIMEOUT;
 836       return;
 837     }
 838
 839   priv->click_timeout = g_value_get_int (&value);
 840 }
 841
 842 static gboolean
 843 gtk_scale_popup (GtkWidget *widget,
 844                  GdkEvent  *event,
 845                  guint32    time)
 846 {
 847   GtkScaleButton *button;
 848   GtkScaleButtonPrivate *priv;
 849   GtkAdjustment *adj;
 850   gint x, y, m, dx, dy, sx, sy, startoff;
 851   gdouble v;
 852   GdkDisplay *display;
 853   GdkScreen *screen;
 854
 855   button = GTK_SCALE_BUTTON (widget);
 856   priv = button->priv;
 857   adj = priv->adjustment;
 858
 859   display = gtk_widget_get_display (widget);
 860   screen = gtk_widget_get_screen (widget);
 861
 862   /* position roughly */
 863   gtk_window_set_screen (GTK_WINDOW (priv->dock), screen);
 864
 865   gdk_window_get_origin (widget->window, &x, &y);
 866   x += widget->allocation.x;
 867   y += widget->allocation.y;
 868
 869   if (priv->orientation == GTK_ORIENTATION_VERTICAL)
 870     gtk_window_move (GTK_WINDOW (priv->dock), x, y - (SCALE_SIZE / 2));
 871   else
 872     gtk_window_move (GTK_WINDOW (priv->dock), x - (SCALE_SIZE / 2), y);
 873
 874   gtk_widget_show_all (priv->dock);
 875
 876   gdk_window_get_origin (priv->dock->window, &dx, &dy);
 877   dx += priv->dock->allocation.x;
 878   dy += priv->dock->allocation.y;
 879
 880   gdk_window_get_origin (priv->scale->window, &sx, &sy);
 881   sx += priv->scale->allocation.x;
 882   sy += priv->scale->allocation.y;
 883
 884   priv->timeout = TRUE;
 885
 886   /* position (needs widget to be shown already) */
 887   v = gtk_scale_button_get_value (button) / (adj->upper - adj->lower);
 888
 889   if (priv->orientation == GTK_ORIENTATION_VERTICAL)
 890     {
 891       startoff = sy - dy;
 892
 893       x += (widget->allocation.width - priv->dock->allocation.width) / 2;
 894       y -= startoff;
 895       y -= GTK_RANGE (priv->scale)->min_slider_size / 2;
 896       m = priv->scale->allocation.height -
 897           GTK_RANGE (priv->scale)->min_slider_size;
 898       y -= m * (1.0 - v);
 899     }
 900   else
 901     {
 902       startoff = sx - dx;
 903
 904       x -= startoff;
 905       y += (widget->allocation.height - priv->dock->allocation.height) / 2;
 906       x -= GTK_RANGE (priv->scale)->min_slider_size / 2;
 907       m = priv->scale->allocation.width -
 908           GTK_RANGE (priv->scale)->min_slider_size;
 909       x -= m * v;
 910     }
 911
 912   /* Make sure the dock stays inside the monitor */
 913   if (event->type == GDK_BUTTON_PRESS)
 914     {
 915       int monitor;
 916       GdkEventButton *button_event = (GdkEventButton *) event;
 917       GdkRectangle rect;
 918       GtkWidget *d;
 919
 920       d = GTK_WIDGET (priv->dock);
 921       monitor = gdk_screen_get_monitor_at_point (screen,
 922                                                  button_event->x_root,
 923                                                  button_event->y_root);
 924       gdk_screen_get_monitor_geometry (screen, monitor, &rect);
 925
 926       if (priv->orientation == GTK_ORIENTATION_VERTICAL)
 927         y += button_event->y;
 928       else
 929         x += button_event->x;
 930
 931       if (y < rect.y)
 932         y = rect.y;
 933       else if (y + d->allocation.height > rect.height + rect.y)
 934         y = rect.y + rect.height - d->allocation.height;
 935
 936       if (x < rect.x)
 937         x = rect.x;
 938       else if (x + d->allocation.width > rect.width + rect.x)
 939         x = rect.x + rect.width - d->allocation.width;
 940     }
 941
 942   gtk_window_move (GTK_WINDOW (priv->dock), x, y);
 943
 944   if (event->type == GDK_BUTTON_PRESS)
 945     GTK_WIDGET_CLASS (gtk_scale_button_parent_class)->button_press_event (widget, (GdkEventButton *) event);
 946
 947   /* grab focus */
 948   gtk_grab_add (priv->dock);
 949
 950   if (gdk_pointer_grab (priv->dock->window, TRUE,
 951                         GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK |
 952                         GDK_POINTER_MOTION_MASK, NULL, NULL, time)
 953       != GDK_GRAB_SUCCESS)
 954     {
 955       gtk_grab_remove (priv->dock);
 956       gtk_widget_hide (priv->dock);
 957       return FALSE;
 958     }
 959
 960   if (gdk_keyboard_grab (priv->dock->window, TRUE, time) != GDK_GRAB_SUCCESS)
 961     {
 962       gdk_display_pointer_ungrab (display, time);
 963       gtk_grab_remove (priv->dock);
 964       gtk_widget_hide (priv->dock);
 965       return FALSE;
 966     }
 967
 968   gtk_widget_grab_focus (priv->dock);
 969
 970   if (event->type == GDK_BUTTON_PRESS)
 971     {
 972       GdkEventButton *e;
 973       GdkEventButton *button_event = (GdkEventButton *) event;
 974
 975       /* forward event to the slider */
 976       e = (GdkEventButton *) gdk_event_copy ((GdkEvent *) event);
 977       e->window = priv->scale->window;
 978
 979       /* position: the X position isn't relevant, halfway will work just fine.
 980        * The vertical position should be *exactly* in the middle of the slider
 981        * of the scale; if we don't do that correctly, it'll move from its current
 982        * position, which means a position change on-click, which is bad.
 983        */
 984       if (priv->orientation == GTK_ORIENTATION_VERTICAL)
 985         {
 986           e->x = priv->scale->allocation.width / 2;
 987           m = priv->scale->allocation.height -
 988               GTK_RANGE (priv->scale)->min_slider_size;
 989           e->y = ((1.0 - v) * m) + GTK_RANGE (priv->scale)->min_slider_size / 2;
 990         }
 991       else
 992         {
 993           e->y = priv->scale->allocation.height / 2;
 994           m = priv->scale->allocation.width -
 995               GTK_RANGE (priv->scale)->min_slider_size;
 996           e->x = (v * m) + GTK_RANGE (priv->scale)->min_slider_size / 2;
 997         }
 998
 999       gtk_widget_event (priv->scale, (GdkEvent *) e);
1000       e->window = button_event->window;
1001       gdk_event_free ((GdkEvent *) e);
1002     }
1003
1004   gtk_widget_grab_focus (priv->scale);
1005
1006   priv->pop_time = time;
1007
1008   return TRUE;
1009 }
1010
1011 static gboolean
1012 gtk_scale_button_press (GtkWidget      *widget,
1013                         GdkEventButton *event)
1014 {
1015   return gtk_scale_popup (widget, (GdkEvent *) event, event->time);
1016 }
1017
1018 static void
1019 gtk_scale_button_popup (GtkWidget *widget)
1020 {
1021   GdkEvent *ev;
1022
1023   ev = gdk_event_new (GDK_KEY_RELEASE);
1024   gtk_scale_popup (widget, ev, GDK_CURRENT_TIME);
1025   gdk_event_free (ev);
1026 }
1027
1028 static gboolean
1029 gtk_scale_button_key_release (GtkWidget   *widget,
1030                               GdkEventKey *event)
1031 {
1032   return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
1033 }
1034
1035 /* This is called when the grab is broken for
1036  * either the dock, or the scale itself */
1037 static void
1038 gtk_scale_button_grab_notify (GtkScaleButton *button,
1039                               gboolean        was_grabbed)
1040 {
1041   GdkDisplay *display;
1042   GtkScaleButtonPrivate *priv;
1043
1044   if (was_grabbed != FALSE)
1045     return;
1046
1047   priv = button->priv;
1048
1049   if (!GTK_WIDGET_HAS_GRAB (priv->dock))
1050     return;
1051
1052   if (gtk_widget_is_ancestor (gtk_grab_get_current (), priv->dock))
1053     return;
1054
1055   display = gtk_widget_get_display (priv->dock);
1056   gdk_display_keyboard_ungrab (display, GDK_CURRENT_TIME);
1057   gdk_display_pointer_ungrab (display, GDK_CURRENT_TIME);
1058   gtk_grab_remove (priv->dock);
1059
1060   /* hide again */
1061   gtk_widget_hide (priv->dock);
1062   priv->timeout = FALSE;
1063 }
1064
1065 /*
1066  * +/- button callbacks.
1067  */
1068
1069 static gboolean
1070 cb_button_timeout (gpointer user_data)
1071 {
1072   GtkScaleButton *button;
1073   GtkScaleButtonPrivate *priv;
1074   GtkAdjustment *adj;
1075   gdouble val;
1076   gboolean res = TRUE;
1077
1078   button = GTK_SCALE_BUTTON (user_data);
1079   priv = button->priv;
1080
1081   if (priv->click_id == 0)
1082     return FALSE;
1083
1084   adj = priv->adjustment;
1085
1086   val = gtk_scale_button_get_value (button);
1087   val += priv->direction;
1088   if (val <= adj->lower)
1089     {
1090       res = FALSE;
1091       val = adj->lower;
1092     }
1093   else if (val > adj->upper)
1094     {
1095       res = FALSE;
1096       val = adj->upper;
1097     }
1098   gtk_scale_button_set_value (button, val);
1099
1100   if (!res)
1101     {
1102       g_source_remove (priv->click_id);
1103       priv->click_id = 0;
1104     }
1105
1106   return res;
1107 }
1108
1109 static gboolean
1110 cb_button_press (GtkWidget      *widget,
1111                  GdkEventButton *event,
1112                  gpointer        user_data)
1113 {
1114   GtkScaleButton *button;
1115   GtkScaleButtonPrivate *priv;
1116   GtkAdjustment *adj;
1117
1118   button = GTK_SCALE_BUTTON (user_data);
1119   priv = button->priv;
1120   adj = priv->adjustment;
1121
1122   if (priv->click_id != 0)
1123     g_source_remove (priv->click_id);
1124
1125   if (widget == button->plus_button)
1126     priv->direction = fabs (adj->page_increment);
1127   else
1128     priv->direction = - fabs (adj->page_increment);
1129
1130   priv->click_id = gdk_threads_add_timeout (priv->click_timeout,
1131                                             cb_button_timeout,
1132                                             button);
1133   cb_button_timeout (button);
1134
1135   return TRUE;
1136 }
1137
1138 static gboolean
1139 cb_button_release (GtkWidget      *widget,
1140                    GdkEventButton *event,
1141                    gpointer        user_data)
1142 {
1143   GtkScaleButton *button;
1144   GtkScaleButtonPrivate *priv;
1145
1146   button = GTK_SCALE_BUTTON (user_data);
1147   priv = button->priv;
1148
1149   if (priv->click_id != 0)
1150     {
1151       g_source_remove (priv->click_id);
1152       priv->click_id = 0;
1153     }
1154
1155   return TRUE;
1156 }
1157
1158 static void
1159 cb_dock_grab_notify (GtkWidget *widget,
1160                      gboolean   was_grabbed,
1161                      gpointer   user_data)
1162 {
1163   GtkScaleButton *button = (GtkScaleButton *) user_data;
1164
1165   gtk_scale_button_grab_notify (button, was_grabbed);
1166 }
1167
1168 static gboolean
1169 cb_dock_grab_broken_event (GtkWidget *widget,
1170                            gboolean   was_grabbed,
1171                            gpointer   user_data)
1172 {
1173   GtkScaleButton *button = (GtkScaleButton *) user_data;
1174
1175   gtk_scale_button_grab_notify (button, FALSE);
1176
1177   return FALSE;
1178 }
1179
1180 /*
1181  * Scale callbacks.
1182  */
1183
1184 static void
1185 gtk_scale_button_release_grab (GtkScaleButton *button,
1186                                GdkEventButton *event)
1187 {
1188   GdkEventButton *e;
1189   GdkDisplay *display;
1190   GtkScaleButtonPrivate *priv;
1191
1192   priv = button->priv;
1193
1194   /* ungrab focus */
1195   display = gtk_widget_get_display (GTK_WIDGET (button));
1196   gdk_display_keyboard_ungrab (display, event->time);
1197   gdk_display_pointer_ungrab (display, event->time);
1198   gtk_grab_remove (priv->dock);
1199
1200   /* hide again */
1201   gtk_widget_hide (priv->dock);
1202   priv->timeout = FALSE;
1203
1204   e = (GdkEventButton *) gdk_event_copy ((GdkEvent *) event);
1205   e->window = GTK_WIDGET (button)->window;
1206   e->type = GDK_BUTTON_RELEASE;
1207   gtk_widget_event (GTK_WIDGET (button), (GdkEvent *) e);
1208   e->window = event->window;
1209   gdk_event_free ((GdkEvent *) e);
1210 }
1211
1212 static gboolean
1213 cb_dock_button_press (GtkWidget      *widget,
1214                       GdkEventButton *event,
1215                       gpointer        user_data)
1216 {
1217   GtkScaleButton *button = GTK_SCALE_BUTTON (user_data);
1218
1219   if (event->type == GDK_BUTTON_PRESS)
1220     {
1221       gtk_scale_button_release_grab (button, event);
1222       return TRUE;
1223     }
1224
1225   return FALSE;
1226 }
1227
1228 static void
1229 gtk_scale_button_popdown (GtkWidget *widget)
1230 {
1231   GtkScaleButton *button;
1232   GtkScaleButtonPrivate *priv;
1233   GdkDisplay *display;
1234
1235   button = GTK_SCALE_BUTTON (widget);
1236   priv = button->priv;
1237
1238   /* ungrab focus */
1239   display = gtk_widget_get_display (widget);
1240   gdk_display_keyboard_ungrab (display, GDK_CURRENT_TIME);
1241   gdk_display_pointer_ungrab (display, GDK_CURRENT_TIME);
1242   gtk_grab_remove (priv->dock);
1243
1244   /* hide again */
1245   gtk_widget_hide (priv->dock);
1246   priv->timeout = FALSE;
1247 }
1248
1249 static gboolean
1250 cb_dock_key_release (GtkWidget   *widget,
1251                      GdkEventKey *event,
1252                      gpointer     user_data)
1253 {
1254   if (event->keyval == GDK_Escape)
1255     {
1256       gtk_scale_button_popdown (GTK_WIDGET (user_data));
1257       return TRUE;
1258     }
1259
1260   if (!gtk_bindings_activate_event (GTK_OBJECT (widget), event))
1261     {
1262       /* The popup hasn't managed the event, pass onto the button */
1263       gtk_bindings_activate_event (GTK_OBJECT (user_data), event);
1264     }
1265
1266   return TRUE;
1267 }
1268
1269 static void
1270 cb_scale_grab_notify (GtkWidget *widget,
1271                       gboolean   was_grabbed,
1272                       gpointer   user_data)
1273 {
1274   GtkScaleButton *button = (GtkScaleButton *) user_data;
1275
1276   gtk_scale_button_grab_notify (button, was_grabbed);
1277 }
1278
1279 /*
1280  * Scale stuff.
1281  */
1282
1283 #define GTK_TYPE_SCALE_BUTTON_VSCALE    (gtk_scale_button_vscale_get_type ())
1284 #define GTK_SCALE_BUTTON_VSCALE(obj)    (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_SCALE_BUTTON_VSCALE, GtkScaleButtonVScale))
1285 #define GTK_IS_SCALE_BUTTON_VSCALE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_SCALE_BUTTON_VSCALE))
1286
1287 typedef struct _GtkScaleButtonVScale {
1288   GtkVScale parent;
1289   GtkScaleButton *button;
1290 } GtkScaleButtonVScale;
1291
1292 typedef struct _GtkScaleButtonVScaleClass {
1293   GtkVScaleClass parent_class;
1294 } GtkScaleButtonVScaleClass;
1295
1296 #define GTK_TYPE_SCALE_BUTTON_HSCALE    (gtk_scale_button_hscale_get_type ())
1297 #define GTK_SCALE_BUTTON_HSCALE(obj)    (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_SCALE_BUTTON_HSCALE, GtkScaleButtonHScale))
1298 #define GTK_IS_SCALE_BUTTON_HSCALE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_SCALE_BUTTON_HSCALE))
1299
1300 typedef struct _GtkScaleButtonHScale {
1301   GtkVScale parent;
1302   GtkScaleButton *button;
1303 } GtkScaleButtonHScale;
1304
1305 typedef struct _GtkScaleButtonHScaleClass {
1306   GtkVScaleClass parent_class;
1307 } GtkScaleButtonHScaleClass;
1308
1309 static gboolean gtk_scale_button_scale_press   (GtkWidget      *widget,
1310                                                 GdkEventButton *event);
1311 static gboolean gtk_scale_button_scale_release (GtkWidget      *widget,
1312                                                 GdkEventButton *event);
1313
1314 G_DEFINE_TYPE (GtkScaleButtonVScale, gtk_scale_button_vscale, GTK_TYPE_VSCALE)
1315
1316 G_DEFINE_TYPE (GtkScaleButtonHScale, gtk_scale_button_hscale, GTK_TYPE_HSCALE)
1317
1318 static void
1319 gtk_scale_button_vscale_class_init (GtkScaleButtonVScaleClass *klass)
1320 {
1321   GtkWidgetClass *gtkwidget_class = GTK_WIDGET_CLASS (klass);
1322   GtkRangeClass *gtkrange_class = GTK_RANGE_CLASS (klass);
1323
1324   gtkwidget_class->button_press_event = gtk_scale_button_scale_press;
1325   gtkwidget_class->button_release_event = gtk_scale_button_scale_release;
1326   gtkrange_class->value_changed = gtk_scale_button_scale_value_changed;
1327 }
1328
1329 static void
1330 gtk_scale_button_hscale_class_init (GtkScaleButtonHScaleClass *klass)
1331 {
1332   GtkWidgetClass *gtkwidget_class = GTK_WIDGET_CLASS (klass);
1333   GtkRangeClass *gtkrange_class = GTK_RANGE_CLASS (klass);
1334
1335   gtkwidget_class->button_press_event = gtk_scale_button_scale_press;
1336   gtkwidget_class->button_release_event = gtk_scale_button_scale_release;
1337   gtkrange_class->value_changed = gtk_scale_button_scale_value_changed;
1338 }
1339
1340 static void
1341 gtk_scale_button_vscale_init (GtkScaleButtonVScale *scale)
1342 {
1343 }
1344
1345 static void
1346 gtk_scale_button_hscale_init (GtkScaleButtonHScale *scale)
1347 {
1348 }
1349
1350 static GtkWidget *
1351 gtk_scale_button_scale_box_new (GtkScaleButton *button)
1352 {
1353   GtkScaleButtonPrivate *priv = button->priv;
1354   GtkScaleButtonVScale *scale;
1355   GtkWidget *box;
1356
1357   if (priv->orientation == GTK_ORIENTATION_VERTICAL)
1358     {
1359       box = gtk_vbox_new (FALSE, 0);
1360
1361       scale = g_object_new (GTK_TYPE_SCALE_BUTTON_VSCALE, NULL);
1362       priv->scale = GTK_WIDGET (scale);
1363
1364       gtk_widget_set_size_request (priv->scale, -1, SCALE_SIZE);
1365       gtk_range_set_inverted (GTK_RANGE (priv->scale), TRUE);
1366
1367       gtk_box_pack_start (GTK_BOX (box), button->plus_button, TRUE, FALSE, 0);
1368       gtk_box_pack_start (GTK_BOX (box), priv->scale, TRUE, FALSE, 0);
1369       gtk_box_pack_start (GTK_BOX (box), button->minus_button, TRUE, FALSE, 0);
1370     }
1371   else
1372     {
1373       box = gtk_hbox_new (FALSE, 0);
1374
1375       scale = g_object_new (GTK_TYPE_SCALE_BUTTON_HSCALE, NULL);
1376       priv->scale = GTK_WIDGET (scale);
1377
1378       gtk_widget_set_size_request (priv->scale, SCALE_SIZE, -1);
1379
1380       gtk_box_pack_start (GTK_BOX (box), button->minus_button, TRUE, FALSE, 0);
1381       gtk_box_pack_start (GTK_BOX (box), priv->scale, TRUE, FALSE, 0);
1382       gtk_box_pack_start (GTK_BOX (box), button->plus_button, TRUE, FALSE, 0);
1383     }
1384
1385   gtk_scale_set_draw_value (GTK_SCALE (priv->scale), FALSE);
1386   gtk_range_set_adjustment (GTK_RANGE (scale),
1387                             GTK_ADJUSTMENT (priv->adjustment));
1388   scale->button = button;
1389
1390   g_signal_connect (priv->scale, "grab-notify",
1391                     G_CALLBACK (cb_scale_grab_notify), button);
1392
1393   /* FIXME: without this, the popup window appears as a square
1394    * after changing the orientation
1395    */
1396   gtk_window_resize (GTK_WINDOW (priv->dock), 1, 1);
1397
1398   return box;
1399 }
1400
1401 static gboolean
1402 gtk_scale_button_scale_press (GtkWidget      *widget,
1403                               GdkEventButton *event)
1404 {
1405   GtkScaleButtonPrivate *priv;
1406   GtkWidgetClass *widget_class;
1407
1408   if (GTK_IS_SCALE_BUTTON_VSCALE (widget))
1409     {
1410       priv = GTK_SCALE_BUTTON_VSCALE (widget)->button->priv;
1411       widget_class = GTK_WIDGET_CLASS (gtk_scale_button_vscale_parent_class);
1412     }
1413   else
1414     {
1415       priv = GTK_SCALE_BUTTON_HSCALE (widget)->button->priv;
1416       widget_class = GTK_WIDGET_CLASS (gtk_scale_button_hscale_parent_class);
1417     }
1418
1419   /* the scale will grab input; if we have input grabbed, all goes
1420    * horribly wrong, so let's not do that. */
1421   gtk_grab_remove (priv->dock);
1422
1423   return widget_class->button_press_event (widget, event);
1424 }
1425
1426 static gboolean
1427 gtk_scale_button_scale_release (GtkWidget      *widget,
1428                                 GdkEventButton *event)
1429 {
1430   GtkScaleButton *button;
1431   GtkWidgetClass *widget_class;
1432   gboolean res;
1433
1434   if (GTK_IS_SCALE_BUTTON_VSCALE (widget))
1435     {
1436       button = GTK_SCALE_BUTTON_VSCALE (widget)->button;
1437       widget_class = GTK_WIDGET_CLASS (gtk_scale_button_vscale_parent_class);
1438     }
1439   else
1440     {
1441       button = GTK_SCALE_BUTTON_HSCALE (widget)->button;
1442       widget_class = GTK_WIDGET_CLASS (gtk_scale_button_hscale_parent_class);
1443     }
1444
1445   if (button->priv->timeout)
1446     {
1447       /* if we did a quick click, leave the window open; else, hide it */
1448       if (event->time > button->priv->pop_time + button->priv->click_timeout)
1449         {
1450
1451           gtk_scale_button_release_grab (button, event);
1452           widget_class->button_release_event (widget, event);
1453
1454           return TRUE;
1455         }
1456
1457       button->priv->timeout = FALSE;
1458     }
1459
1460   res = widget_class->button_release_event (widget, event);
1461
1462   /* the scale will release input; right after that, we *have to* grab
1463    * it back so we can catch out-of-scale clicks and hide the popup,
1464    * so I basically want a g_signal_connect_after_always(), but I can't
1465    * find that, so we do this complex 'first-call-parent-then-do-actual-
1466    * action' thingy...
1467    */
1468   gtk_grab_add (button->priv->dock);
1469
1470   return res;
1471 }
1472
1473 static void
1474 gtk_scale_button_update_icon (GtkScaleButton *button)
1475 {
1476   GtkScaleButtonPrivate *priv;
1477   GtkRange *range;
1478   GtkAdjustment *adj;
1479   gdouble value;
1480   const gchar *name;
1481   guint num_icons;
1482
1483   priv = button->priv;
1484
1485   if (!priv->icon_list || priv->icon_list[0] == '\0')
1486     {
1487       gtk_image_set_from_stock (GTK_IMAGE (priv->image),
1488                                 GTK_STOCK_MISSING_IMAGE,
1489                                 priv->size);
1490       return;
1491     }
1492
1493   num_icons = g_strv_length (priv->icon_list);
1494
1495   /* The 1-icon special case */
1496   if (num_icons == 1)
1497     {
1498       gtk_image_set_from_icon_name (GTK_IMAGE (priv->image),
1499                                     priv->icon_list[0],
1500                                     priv->size);
1501       return;
1502     }
1503
1504   range = GTK_RANGE (priv->scale);
1505   adj = priv->adjustment;
1506   value = gtk_scale_button_get_value (button);
1507
1508   /* The 2-icons special case */
1509   if (num_icons == 2)
1510     {
1511       gdouble limit;
1512       limit = (adj->upper - adj->lower) / 2 + adj->lower;
1513       if (value < limit)
1514         name = priv->icon_list[0];
1515       else
1516         name = priv->icon_list[1];
1517
1518       gtk_image_set_from_icon_name (GTK_IMAGE (priv->image),
1519                                     name,
1520                                     priv->size);
1521       return;
1522     }
1523
1524   /* With 3 or more icons */
1525   if (value == adj->lower)
1526     {
1527       name = priv->icon_list[0];
1528     }
1529   else if (value == adj->upper)
1530     {
1531       name = priv->icon_list[1];
1532     }
1533   else
1534     {
1535       gdouble step;
1536       guint i;
1537
1538       step = (adj->upper - adj->lower) / (num_icons - 2);
1539       i = (guint) ((value - adj->lower) / step) + 2;
1540       g_assert (i < num_icons);
1541       name = priv->icon_list[i];
1542     }
1543
1544   gtk_image_set_from_icon_name (GTK_IMAGE (priv->image),
1545                                 name,
1546                                 priv->size);
1547 }
1548
1549 static void
1550 gtk_scale_button_scale_value_changed (GtkRange *range)
1551 {
1552   GtkScaleButton *button;
1553   gdouble value;
1554
1555   if (GTK_IS_SCALE_BUTTON_VSCALE (range))
1556     button = GTK_SCALE_BUTTON_VSCALE (range)->button;
1557   else
1558     button = GTK_SCALE_BUTTON_HSCALE (range)->button;
1559
1560   value = gtk_range_get_value (range);
1561
1562   gtk_scale_button_update_icon (button);
1563
1564   g_signal_emit (button, signals[VALUE_CHANGED], 0, value);
1565   g_object_notify (G_OBJECT (button), "value");
1566 }
1567
1568 #define __GTK_SCALE_BUTTON_C__
1569 #include "gtkaliasdef.c"