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

   1 /* GTK - The GIMP Toolkit
   2  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
   3  *
   4  * GtkSpinButton widget for GTK+
   5  * Copyright (C) 1998 Lars Hamann and Stefan Jeske
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the
  19  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  20  * Boston, MA 02111-1307, USA.
  21  */
  22
  23 /*
  24  * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
  25  * file for a list of people on the GTK+ Team.  See the ChangeLog
  26  * files for a list of changes.  These files are distributed with
  27  * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  28  */
  29
  30 #include "config.h"
  31 #include <stdio.h>
  32 #include <stdlib.h>
  33 #include <math.h>
  34 #include <string.h>
  35 #include <locale.h>
  36 #include "gdk/gdkkeysyms.h"
  37 #include "gtkbindings.h"
  38 #include "gtkspinbutton.h"
  39 #include "gtkentryprivate.h"
  40 #include "gtkmain.h"
  41 #include "gtkmarshalers.h"
  42 #include "gtksettings.h"
  43 #include "gtksizerequest.h"
  44 #include "gtkprivate.h"
  45 #include "gtkintl.h"
  46
  47 #define MIN_SPIN_BUTTON_WIDTH 30
  48 #define MAX_TIMER_CALLS       5
  49 #define EPSILON               1e-10
  50 #define MAX_DIGITS            20
  51 #define MIN_ARROW_WIDTH       6
  52
  53
  54 struct _GtkSpinButtonPrivate
  55 {
  56   GtkSpinButtonUpdatePolicy update_policy;
  57   GtkAdjustment *adjustment;
  58
  59   GdkWindow     *panel;
  60
  61   guint32        timer;
  62
  63   gdouble        climb_rate;
  64   gdouble        timer_step;
  65
  66   guint          button        : 2;
  67   guint          click_child   : 2; /* valid: GTK_ARROW_UP=0, GTK_ARROW_DOWN=1 or 2=NONE/BOTH */
  68   guint          digits        : 10;
  69   guint          in_child      : 2;
  70   guint          need_timer    : 1;
  71   guint          numeric       : 1;
  72   guint          snap_to_ticks : 1;
  73   guint          timer_calls   : 3;
  74   guint          wrap          : 1;
  75 };
  76
  77 enum {
  78   PROP_0,
  79   PROP_ADJUSTMENT,
  80   PROP_CLIMB_RATE,
  81   PROP_DIGITS,
  82   PROP_SNAP_TO_TICKS,
  83   PROP_NUMERIC,
  84   PROP_WRAP,
  85   PROP_UPDATE_POLICY,
  86   PROP_VALUE
  87 };
  88
  89 /* Signals */
  90 enum
  91 {
  92   INPUT,
  93   OUTPUT,
  94   VALUE_CHANGED,
  95   CHANGE_VALUE,
  96   WRAPPED,
  97   LAST_SIGNAL
  98 };
  99
 100 static void gtk_spin_button_editable_init  (GtkEditableInterface *iface);
 101 static void gtk_spin_button_finalize       (GObject            *object);
 102 static void gtk_spin_button_destroy        (GtkObject          *object);
 103 static void gtk_spin_button_set_property   (GObject         *object,
 104                                             guint            prop_id,
 105                                             const GValue    *value,
 106                                             GParamSpec      *pspec);
 107 static void gtk_spin_button_get_property   (GObject         *object,
 108                                             guint            prop_id,
 109                                             GValue          *value,
 110                                             GParamSpec      *pspec);
 111 static void gtk_spin_button_map            (GtkWidget          *widget);
 112 static void gtk_spin_button_unmap          (GtkWidget          *widget);
 113 static void gtk_spin_button_realize        (GtkWidget          *widget);
 114 static void gtk_spin_button_unrealize      (GtkWidget          *widget);
 115 static void gtk_spin_button_size_request   (GtkWidget          *widget,
 116                                             GtkRequisition     *requisition);
 117 static void gtk_spin_button_size_allocate  (GtkWidget          *widget,
 118                                             GtkAllocation      *allocation);
 119 static gint gtk_spin_button_expose         (GtkWidget          *widget,
 120                                             GdkEventExpose     *event);
 121 static gint gtk_spin_button_button_press   (GtkWidget          *widget,
 122                                             GdkEventButton     *event);
 123 static gint gtk_spin_button_button_release (GtkWidget          *widget,
 124                                             GdkEventButton     *event);
 125 static gint gtk_spin_button_motion_notify  (GtkWidget          *widget,
 126                                             GdkEventMotion     *event);
 127 static gint gtk_spin_button_enter_notify   (GtkWidget          *widget,
 128                                             GdkEventCrossing   *event);
 129 static gint gtk_spin_button_leave_notify   (GtkWidget          *widget,
 130                                             GdkEventCrossing   *event);
 131 static gint gtk_spin_button_focus_out      (GtkWidget          *widget,
 132                                             GdkEventFocus      *event);
 133 static void gtk_spin_button_grab_notify    (GtkWidget          *widget,
 134                                             gboolean            was_grabbed);
 135 static void gtk_spin_button_state_changed  (GtkWidget          *widget,
 136                                             GtkStateType        previous_state);
 137 static void gtk_spin_button_style_set      (GtkWidget          *widget,
 138                                             GtkStyle           *previous_style);
 139 static void gtk_spin_button_draw_arrow     (GtkSpinButton      *spin_button,
 140                                             GdkRectangle       *area,
 141                                             GtkArrowType        arrow_type);
 142 static gboolean gtk_spin_button_timer          (GtkSpinButton      *spin_button);
 143 static void gtk_spin_button_stop_spinning  (GtkSpinButton      *spin);
 144 static void gtk_spin_button_value_changed  (GtkAdjustment      *adjustment,
 145                                             GtkSpinButton      *spin_button);
 146 static gint gtk_spin_button_key_release    (GtkWidget          *widget,
 147                                             GdkEventKey        *event);
 148 static gint gtk_spin_button_scroll         (GtkWidget          *widget,
 149                                             GdkEventScroll     *event);
 150 static void gtk_spin_button_activate       (GtkEntry           *entry);
 151 static void gtk_spin_button_get_text_area_size (GtkEntry *entry,
 152                                                 gint     *x,
 153                                                 gint     *y,
 154                                                 gint     *width,
 155                                                 gint     *height);
 156 static void gtk_spin_button_snap           (GtkSpinButton      *spin_button,
 157                                             gdouble             val);
 158 static void gtk_spin_button_insert_text    (GtkEditable        *editable,
 159                                             const gchar        *new_text,
 160                                             gint                new_text_length,
 161                                             gint               *position);
 162 static void gtk_spin_button_real_spin      (GtkSpinButton      *spin_button,
 163                                             gdouble             step);
 164 static void gtk_spin_button_real_change_value (GtkSpinButton   *spin,
 165                                                GtkScrollType    scroll);
 166
 167 static gint gtk_spin_button_default_input  (GtkSpinButton      *spin_button,
 168                                             gdouble            *new_val);
 169 static gint gtk_spin_button_default_output (GtkSpinButton      *spin_button);
 170
 171 static gint spin_button_get_arrow_size     (GtkSpinButton      *spin_button);
 172 static gint spin_button_get_shadow_type    (GtkSpinButton      *spin_button);
 173
 174 static guint spinbutton_signals[LAST_SIGNAL] = {0};
 175
 176 #define NO_ARROW 2
 177
 178 G_DEFINE_TYPE_WITH_CODE (GtkSpinButton, gtk_spin_button, GTK_TYPE_ENTRY,
 179                          G_IMPLEMENT_INTERFACE (GTK_TYPE_EDITABLE,
 180                                                 gtk_spin_button_editable_init))
 181
 182 #define add_spin_binding(binding_set, keyval, mask, scroll)            \
 183   gtk_binding_entry_add_signal (binding_set, keyval, mask,             \
 184                                 "change_value", 1,                     \
 185                                 GTK_TYPE_SCROLL_TYPE, scroll)
 186
 187 static void
 188 gtk_spin_button_class_init (GtkSpinButtonClass *class)
 189 {
 190   GObjectClass     *gobject_class = G_OBJECT_CLASS (class);
 191   GtkObjectClass   *object_class = GTK_OBJECT_CLASS (class);
 192   GtkWidgetClass   *widget_class = GTK_WIDGET_CLASS (class);
 193   GtkEntryClass    *entry_class = GTK_ENTRY_CLASS (class);
 194   GtkBindingSet    *binding_set;
 195
 196   gobject_class->finalize = gtk_spin_button_finalize;
 197
 198   gobject_class->set_property = gtk_spin_button_set_property;
 199   gobject_class->get_property = gtk_spin_button_get_property;
 200
 201   object_class->destroy = gtk_spin_button_destroy;
 202
 203   widget_class->map = gtk_spin_button_map;
 204   widget_class->unmap = gtk_spin_button_unmap;
 205   widget_class->realize = gtk_spin_button_realize;
 206   widget_class->unrealize = gtk_spin_button_unrealize;
 207   widget_class->size_request = gtk_spin_button_size_request;
 208   widget_class->size_allocate = gtk_spin_button_size_allocate;
 209   widget_class->expose_event = gtk_spin_button_expose;
 210   widget_class->scroll_event = gtk_spin_button_scroll;
 211   widget_class->button_press_event = gtk_spin_button_button_press;
 212   widget_class->button_release_event = gtk_spin_button_button_release;
 213   widget_class->motion_notify_event = gtk_spin_button_motion_notify;
 214   widget_class->key_release_event = gtk_spin_button_key_release;
 215   widget_class->enter_notify_event = gtk_spin_button_enter_notify;
 216   widget_class->leave_notify_event = gtk_spin_button_leave_notify;
 217   widget_class->focus_out_event = gtk_spin_button_focus_out;
 218   widget_class->grab_notify = gtk_spin_button_grab_notify;
 219   widget_class->state_changed = gtk_spin_button_state_changed;
 220   widget_class->style_set = gtk_spin_button_style_set;
 221
 222   entry_class->activate = gtk_spin_button_activate;
 223   entry_class->get_text_area_size = gtk_spin_button_get_text_area_size;
 224
 225   class->input = NULL;
 226   class->output = NULL;
 227   class->change_value = gtk_spin_button_real_change_value;
 228
 229   g_object_class_install_property (gobject_class,
 230                                    PROP_ADJUSTMENT,
 231                                    g_param_spec_object ("adjustment",
 232                                                         P_("Adjustment"),
 233                                                         P_("The adjustment that holds the value of the spin button"),
 234                                                         GTK_TYPE_ADJUSTMENT,
 235                                                         GTK_PARAM_READWRITE));
 236
 237   g_object_class_install_property (gobject_class,
 238                                    PROP_CLIMB_RATE,
 239                                    g_param_spec_double ("climb-rate",
 240                                                         P_("Climb Rate"),
 241                                                         P_("The acceleration rate when you hold down a button"),
 242                                                         0.0,
 243                                                         G_MAXDOUBLE,
 244                                                         0.0,
 245                                                         GTK_PARAM_READWRITE));
 246
 247   g_object_class_install_property (gobject_class,
 248                                    PROP_DIGITS,
 249                                    g_param_spec_uint ("digits",
 250                                                       P_("Digits"),
 251                                                       P_("The number of decimal places to display"),
 252                                                       0,
 253                                                       MAX_DIGITS,
 254                                                       0,
 255                                                       GTK_PARAM_READWRITE));
 256
 257   g_object_class_install_property (gobject_class,
 258                                    PROP_SNAP_TO_TICKS,
 259                                    g_param_spec_boolean ("snap-to-ticks",
 260                                                          P_("Snap to Ticks"),
 261                                                          P_("Whether erroneous values are automatically changed to a spin button's nearest step increment"),
 262                                                          FALSE,
 263                                                          GTK_PARAM_READWRITE));
 264
 265   g_object_class_install_property (gobject_class,
 266                                    PROP_NUMERIC,
 267                                    g_param_spec_boolean ("numeric",
 268                                                          P_("Numeric"),
 269                                                          P_("Whether non-numeric characters should be ignored"),
 270                                                          FALSE,
 271                                                          GTK_PARAM_READWRITE));
 272
 273   g_object_class_install_property (gobject_class,
 274                                    PROP_WRAP,
 275                                    g_param_spec_boolean ("wrap",
 276                                                          P_("Wrap"),
 277                                                          P_("Whether a spin button should wrap upon reaching its limits"),
 278                                                          FALSE,
 279                                                          GTK_PARAM_READWRITE));
 280
 281   g_object_class_install_property (gobject_class,
 282                                    PROP_UPDATE_POLICY,
 283                                    g_param_spec_enum ("update-policy",
 284                                                       P_("Update Policy"),
 285                                                       P_("Whether the spin button should update always, or only when the value is legal"),
 286                                                       GTK_TYPE_SPIN_BUTTON_UPDATE_POLICY,
 287                                                       GTK_UPDATE_ALWAYS,
 288                                                       GTK_PARAM_READWRITE));
 289
 290   g_object_class_install_property (gobject_class,
 291                                    PROP_VALUE,
 292                                    g_param_spec_double ("value",
 293                                                         P_("Value"),
 294                                                         P_("Reads the current value, or sets a new value"),
 295                                                         -G_MAXDOUBLE,
 296                                                         G_MAXDOUBLE,
 297                                                         0.0,
 298                                                         GTK_PARAM_READWRITE));
 299
 300   gtk_widget_class_install_style_property_parser (widget_class,
 301                                                   g_param_spec_enum ("shadow-type",
 302                                                                      "Shadow Type",
 303                                                                      P_("Style of bevel around the spin button"),
 304                                                                      GTK_TYPE_SHADOW_TYPE,
 305                                                                      GTK_SHADOW_IN,
 306                                                                      GTK_PARAM_READABLE),
 307                                                   gtk_rc_property_parse_enum);
 308   spinbutton_signals[INPUT] =
 309     g_signal_new (I_("input"),
 310                   G_TYPE_FROM_CLASS (gobject_class),
 311                   G_SIGNAL_RUN_LAST,
 312                   G_STRUCT_OFFSET (GtkSpinButtonClass, input),
 313                   NULL, NULL,
 314                   _gtk_marshal_INT__POINTER,
 315                   G_TYPE_INT, 1,
 316                   G_TYPE_POINTER);
 317
 318   /**
 319    * GtkSpinButton::output:
 320    * @spin_button: the object which received the signal
 321    *
 322    * The ::output signal can be used to change to formatting
 323    * of the value that is displayed in the spin buttons entry.
 324    * |[
 325    * /&ast; show leading zeros &ast;/
 326    * static gboolean
 327    * on_output (GtkSpinButton *spin,
 328    *            gpointer       data)
 329    * {
 330    *    GtkAdjustment *adj;
 331    *    gchar *text;
 332    *    int value;
 333    *
 334    *    adj = gtk_spin_button_get_adjustment (spin);
 335    *    value = (int)gtk_adjustment_get_value (adj);
 336    *    text = g_strdup_printf ("%02d", value);
 337    *    gtk_entry_set_text (GTK_ENTRY (spin), text);
 338    *    g_free (text);
 339    *
 340    *    return TRUE;
 341    * }
 342    * ]|
 343    *
 344    * Returns: %TRUE if the value has been displayed.
 345    */
 346   spinbutton_signals[OUTPUT] =
 347     g_signal_new (I_("output"),
 348                   G_TYPE_FROM_CLASS (gobject_class),
 349                   G_SIGNAL_RUN_LAST,
 350                   G_STRUCT_OFFSET (GtkSpinButtonClass, output),
 351                   _gtk_boolean_handled_accumulator, NULL,
 352                   _gtk_marshal_BOOLEAN__VOID,
 353                   G_TYPE_BOOLEAN, 0);
 354
 355   spinbutton_signals[VALUE_CHANGED] =
 356     g_signal_new (I_("value-changed"),
 357                   G_TYPE_FROM_CLASS (gobject_class),
 358                   G_SIGNAL_RUN_LAST,
 359                   G_STRUCT_OFFSET (GtkSpinButtonClass, value_changed),
 360                   NULL, NULL,
 361                   _gtk_marshal_VOID__VOID,
 362                   G_TYPE_NONE, 0);
 363
 364   /**
 365    * GtkSpinButton::wrapped:
 366    * @spinbutton: the object which received the signal
 367    *
 368    * The wrapped signal is emitted right after the spinbutton wraps
 369    * from its maximum to minimum value or vice-versa.
 370    *
 371    * Since: 2.10
 372    */
 373   spinbutton_signals[WRAPPED] =
 374     g_signal_new (I_("wrapped"),
 375                   G_TYPE_FROM_CLASS (gobject_class),
 376                   G_SIGNAL_RUN_LAST,
 377                   G_STRUCT_OFFSET (GtkSpinButtonClass, wrapped),
 378                   NULL, NULL,
 379                   _gtk_marshal_VOID__VOID,
 380                   G_TYPE_NONE, 0);
 381
 382   /* Action signals */
 383   spinbutton_signals[CHANGE_VALUE] =
 384     g_signal_new (I_("change-value"),
 385                   G_TYPE_FROM_CLASS (gobject_class),
 386                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 387                   G_STRUCT_OFFSET (GtkSpinButtonClass, change_value),
 388                   NULL, NULL,
 389                   _gtk_marshal_VOID__ENUM,
 390                   G_TYPE_NONE, 1,
 391                   GTK_TYPE_SCROLL_TYPE);
 392
 393   binding_set = gtk_binding_set_by_class (class);
 394
 395   add_spin_binding (binding_set, GDK_KEY_Up, 0, GTK_SCROLL_STEP_UP);
 396   add_spin_binding (binding_set, GDK_KEY_KP_Up, 0, GTK_SCROLL_STEP_UP);
 397   add_spin_binding (binding_set, GDK_KEY_Down, 0, GTK_SCROLL_STEP_DOWN);
 398   add_spin_binding (binding_set, GDK_KEY_KP_Down, 0, GTK_SCROLL_STEP_DOWN);
 399   add_spin_binding (binding_set, GDK_KEY_Page_Up, 0, GTK_SCROLL_PAGE_UP);
 400   add_spin_binding (binding_set, GDK_KEY_Page_Down, 0, GTK_SCROLL_PAGE_DOWN);
 401   add_spin_binding (binding_set, GDK_KEY_Page_Up, GDK_CONTROL_MASK, GTK_SCROLL_END);
 402   add_spin_binding (binding_set, GDK_KEY_Page_Down, GDK_CONTROL_MASK, GTK_SCROLL_START);
 403
 404   g_type_class_add_private (class, sizeof (GtkSpinButtonPrivate));
 405 }
 406
 407 static void
 408 gtk_spin_button_editable_init (GtkEditableInterface *iface)
 409 {
 410   iface->insert_text = gtk_spin_button_insert_text;
 411 }
 412
 413 static void
 414 gtk_spin_button_set_property (GObject      *object,
 415                               guint         prop_id,
 416                               const GValue *value,
 417                               GParamSpec   *pspec)
 418 {
 419   GtkSpinButton *spin_button = GTK_SPIN_BUTTON (object);
 420   GtkSpinButtonPrivate *priv = spin_button->priv;
 421
 422   switch (prop_id)
 423     {
 424       GtkAdjustment *adjustment;
 425
 426     case PROP_ADJUSTMENT:
 427       adjustment = GTK_ADJUSTMENT (g_value_get_object (value));
 428       if (!adjustment)
 429         adjustment = (GtkAdjustment*) gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
 430       gtk_spin_button_set_adjustment (spin_button, adjustment);
 431       break;
 432     case PROP_CLIMB_RATE:
 433       gtk_spin_button_configure (spin_button,
 434                                  priv->adjustment,
 435                                  g_value_get_double (value),
 436                                  priv->digits);
 437       break;
 438     case PROP_DIGITS:
 439       gtk_spin_button_configure (spin_button,
 440                                  priv->adjustment,
 441                                  priv->climb_rate,
 442                                  g_value_get_uint (value));
 443       break;
 444     case PROP_SNAP_TO_TICKS:
 445       gtk_spin_button_set_snap_to_ticks (spin_button, g_value_get_boolean (value));
 446       break;
 447     case PROP_NUMERIC:
 448       gtk_spin_button_set_numeric (spin_button, g_value_get_boolean (value));
 449       break;
 450     case PROP_WRAP:
 451       gtk_spin_button_set_wrap (spin_button, g_value_get_boolean (value));
 452       break;
 453     case PROP_UPDATE_POLICY:
 454       gtk_spin_button_set_update_policy (spin_button, g_value_get_enum (value));
 455       break;
 456     case PROP_VALUE:
 457       gtk_spin_button_set_value (spin_button, g_value_get_double (value));
 458       break;
 459     default:
 460       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 461       break;
 462     }
 463 }
 464
 465 static void
 466 gtk_spin_button_get_property (GObject      *object,
 467                               guint         prop_id,
 468                               GValue       *value,
 469                               GParamSpec   *pspec)
 470 {
 471   GtkSpinButton *spin_button = GTK_SPIN_BUTTON (object);
 472   GtkSpinButtonPrivate *priv = spin_button->priv;
 473
 474   switch (prop_id)
 475     {
 476     case PROP_ADJUSTMENT:
 477       g_value_set_object (value, priv->adjustment);
 478       break;
 479     case PROP_CLIMB_RATE:
 480       g_value_set_double (value, priv->climb_rate);
 481       break;
 482     case PROP_DIGITS:
 483       g_value_set_uint (value, priv->digits);
 484       break;
 485     case PROP_SNAP_TO_TICKS:
 486       g_value_set_boolean (value, priv->snap_to_ticks);
 487       break;
 488     case PROP_NUMERIC:
 489       g_value_set_boolean (value, priv->numeric);
 490       break;
 491     case PROP_WRAP:
 492       g_value_set_boolean (value, priv->wrap);
 493       break;
 494     case PROP_UPDATE_POLICY:
 495       g_value_set_enum (value, priv->update_policy);
 496       break;
 497      case PROP_VALUE:
 498        g_value_set_double (value, priv->adjustment->value);
 499       break;
 500     default:
 501       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 502       break;
 503     }
 504 }
 505
 506 static void
 507 gtk_spin_button_init (GtkSpinButton *spin_button)
 508 {
 509   GtkSpinButtonPrivate *priv;
 510
 511   spin_button->priv = G_TYPE_INSTANCE_GET_PRIVATE (spin_button,
 512                                                    GTK_TYPE_SPIN_BUTTON,
 513                                                    GtkSpinButtonPrivate);
 514   priv = spin_button->priv;
 515
 516   priv->adjustment = NULL;
 517   priv->panel = NULL;
 518   priv->timer = 0;
 519   priv->climb_rate = 0.0;
 520   priv->timer_step = 0.0;
 521   priv->update_policy = GTK_UPDATE_ALWAYS;
 522   priv->in_child = NO_ARROW;
 523   priv->click_child = NO_ARROW;
 524   priv->button = 0;
 525   priv->need_timer = FALSE;
 526   priv->timer_calls = 0;
 527   priv->digits = 0;
 528   priv->numeric = FALSE;
 529   priv->wrap = FALSE;
 530   priv->snap_to_ticks = FALSE;
 531
 532   gtk_spin_button_set_adjustment (spin_button,
 533           (GtkAdjustment*) gtk_adjustment_new (0, 0, 0, 0, 0, 0));
 534 }
 535
 536 static void
 537 gtk_spin_button_finalize (GObject *object)
 538 {
 539   gtk_spin_button_set_adjustment (GTK_SPIN_BUTTON (object), NULL);
 540
 541   G_OBJECT_CLASS (gtk_spin_button_parent_class)->finalize (object);
 542 }
 543
 544 static void
 545 gtk_spin_button_destroy (GtkObject *object)
 546 {
 547   gtk_spin_button_stop_spinning (GTK_SPIN_BUTTON (object));
 548
 549   GTK_OBJECT_CLASS (gtk_spin_button_parent_class)->destroy (object);
 550 }
 551
 552 static void
 553 gtk_spin_button_map (GtkWidget *widget)
 554 {
 555   GtkSpinButton *spin_button = GTK_SPIN_BUTTON (widget);
 556   GtkSpinButtonPrivate *priv = spin_button->priv;
 557
 558   if (gtk_widget_get_realized (widget) && !gtk_widget_get_mapped (widget))
 559     {
 560       GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->map (widget);
 561       gdk_window_show (priv->panel);
 562     }
 563 }
 564
 565 static void
 566 gtk_spin_button_unmap (GtkWidget *widget)
 567 {
 568   GtkSpinButton *spin_button = GTK_SPIN_BUTTON (widget);
 569   GtkSpinButtonPrivate *priv = spin_button->priv;
 570
 571   if (gtk_widget_get_mapped (widget))
 572     {
 573       gtk_spin_button_stop_spinning (GTK_SPIN_BUTTON (widget));
 574
 575       gdk_window_hide (priv->panel);
 576       GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->unmap (widget);
 577     }
 578 }
 579
 580 static void
 581 gtk_spin_button_realize (GtkWidget *widget)
 582 {
 583   GtkSpinButton *spin_button = GTK_SPIN_BUTTON (widget);
 584   GtkSpinButtonPrivate *priv = spin_button->priv;
 585   GtkAllocation allocation;
 586   GtkRequisition requisition;
 587   GtkStyle *style;
 588   GdkWindowAttr attributes;
 589   gint attributes_mask;
 590   gboolean return_val;
 591   gint arrow_size;
 592
 593   style = gtk_widget_get_style (widget);
 594
 595   arrow_size = spin_button_get_arrow_size (spin_button);
 596
 597   gtk_size_request_get_size (GTK_SIZE_REQUEST (spin_button), &requisition, NULL);
 598   gtk_widget_get_allocation (widget, &allocation);
 599
 600   gtk_widget_set_events (widget, gtk_widget_get_events (widget) |
 601                          GDK_KEY_RELEASE_MASK);
 602   GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->realize (widget);
 603
 604   attributes.window_type = GDK_WINDOW_CHILD;
 605   attributes.wclass = GDK_INPUT_OUTPUT;
 606   attributes.visual = gtk_widget_get_visual (widget);
 607   attributes.colormap = gtk_widget_get_colormap (widget);
 608   attributes.event_mask = gtk_widget_get_events (widget);
 609   attributes.event_mask |= GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_MASK
 610     | GDK_BUTTON_RELEASE_MASK | GDK_LEAVE_NOTIFY_MASK | GDK_ENTER_NOTIFY_MASK
 611     | GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK;
 612
 613   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
 614
 615   attributes.x = allocation.width - arrow_size - 2 * style->xthickness;
 616   attributes.y = (allocation.height - requisition.height) / 2;
 617   attributes.width = arrow_size + 2 * style->xthickness;
 618   attributes.height = requisition.height;
 619
 620   priv->panel = gdk_window_new (gtk_widget_get_window (widget),
 621                                 &attributes, attributes_mask);
 622   gdk_window_set_user_data (priv->panel, widget);
 623
 624   gtk_style_set_background (style,
 625                             priv->panel, GTK_STATE_NORMAL);
 626
 627   return_val = FALSE;
 628   g_signal_emit (spin_button, spinbutton_signals[OUTPUT], 0, &return_val);
 629   if (return_val == FALSE)
 630     gtk_spin_button_default_output (spin_button);
 631
 632   gtk_widget_queue_resize (GTK_WIDGET (spin_button));
 633 }
 634
 635 static void
 636 gtk_spin_button_unrealize (GtkWidget *widget)
 637 {
 638   GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
 639   GtkSpinButtonPrivate *priv = spin->priv;
 640
 641   GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->unrealize (widget);
 642
 643   if (priv->panel)
 644     {
 645       gdk_window_set_user_data (priv->panel, NULL);
 646       gdk_window_destroy (priv->panel);
 647       priv->panel = NULL;
 648     }
 649 }
 650
 651 static int
 652 compute_double_length (double val, int digits)
 653 {
 654   int a;
 655   int extra;
 656
 657   a = 1;
 658   if (fabs (val) > 1.0)
 659     a = floor (log10 (fabs (val))) + 1;
 660
 661   extra = 0;
 662
 663   /* The dot: */
 664   if (digits > 0)
 665     extra++;
 666
 667   /* The sign: */
 668   if (val < 0)
 669     extra++;
 670
 671   return a + digits + extra;
 672 }
 673
 674 static void
 675 gtk_spin_button_size_request (GtkWidget      *widget,
 676                               GtkRequisition *requisition)
 677 {
 678   GtkSpinButton *spin_button = GTK_SPIN_BUTTON (widget);
 679   GtkSpinButtonPrivate *priv = spin_button->priv;
 680   GtkEntry *entry = GTK_ENTRY (widget);
 681   GtkStyle *style;
 682   gint arrow_size;
 683
 684   style = gtk_widget_get_style (widget);
 685
 686   arrow_size = spin_button_get_arrow_size (spin_button);
 687
 688   GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->size_request (widget, requisition);
 689
 690   if (entry->width_chars < 0)
 691     {
 692       PangoContext *context;
 693       PangoFontMetrics *metrics;
 694       gint width;
 695       gint w;
 696       gint string_len;
 697       gint max_string_len;
 698       gint digit_width;
 699       gboolean interior_focus;
 700       gint focus_width;
 701       gint xborder, yborder;
 702       GtkBorder inner_border;
 703
 704       gtk_widget_style_get (widget,
 705                             "interior-focus", &interior_focus,
 706                             "focus-line-width", &focus_width,
 707                             NULL);
 708
 709       context = gtk_widget_get_pango_context (widget);
 710       metrics = pango_context_get_metrics (context,
 711                                            style->font_desc,
 712                                            pango_context_get_language (context));
 713
 714       digit_width = pango_font_metrics_get_approximate_digit_width (metrics);
 715       digit_width = PANGO_SCALE *
 716         ((digit_width + PANGO_SCALE - 1) / PANGO_SCALE);
 717
 718       pango_font_metrics_unref (metrics);
 719
 720       /* Get max of MIN_SPIN_BUTTON_WIDTH, size of upper, size of lower */
 721
 722       width = MIN_SPIN_BUTTON_WIDTH;
 723       max_string_len = MAX (10, compute_double_length (1e9 * priv->adjustment->step_increment,
 724                                                        priv->digits));
 725
 726       string_len = compute_double_length (priv->adjustment->upper,
 727                                           priv->digits);
 728       w = PANGO_PIXELS (MIN (string_len, max_string_len) * digit_width);
 729       width = MAX (width, w);
 730       string_len = compute_double_length (priv->adjustment->lower,
 731                                           priv->digits);
 732       w = PANGO_PIXELS (MIN (string_len, max_string_len) * digit_width);
 733       width = MAX (width, w);
 734
 735       _gtk_entry_get_borders (entry, &xborder, &yborder);
 736       _gtk_entry_effective_inner_border (entry, &inner_border);
 737
 738       requisition->width = width + xborder * 2 + inner_border.left + inner_border.right;
 739     }
 740
 741   requisition->width += arrow_size + 2 * style->xthickness;
 742 }
 743
 744 static void
 745 gtk_spin_button_size_allocate (GtkWidget     *widget,
 746                                GtkAllocation *allocation)
 747 {
 748   GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
 749   GtkSpinButtonPrivate *priv = spin->priv;
 750   GtkAllocation panel_allocation;
 751   GtkRequisition requisition;
 752   gint arrow_size;
 753   gint panel_width;
 754
 755   arrow_size = spin_button_get_arrow_size (spin);
 756   panel_width = arrow_size + 2 * gtk_widget_get_style (widget)->xthickness;
 757
 758   gtk_size_request_get_size (GTK_SIZE_REQUEST (widget), &requisition, NULL);
 759
 760   gtk_widget_set_allocation (widget, allocation);
 761
 762   if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 763     panel_allocation.x = 0;
 764   else
 765     panel_allocation.x = allocation->width - panel_width;
 766
 767   panel_allocation.width = panel_width;
 768   panel_allocation.height = MIN (requisition.height, allocation->height);
 769
 770   panel_allocation.y = 0;
 771
 772   GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->size_allocate (widget, allocation);
 773
 774   if (gtk_widget_get_realized (widget))
 775     {
 776       gdk_window_move_resize (priv->panel,
 777                               panel_allocation.x,
 778                               panel_allocation.y,
 779                               panel_allocation.width,
 780                               panel_allocation.height);
 781     }
 782
 783   gtk_widget_queue_draw (GTK_WIDGET (spin));
 784 }
 785
 786 static gint
 787 gtk_spin_button_expose (GtkWidget      *widget,
 788                         GdkEventExpose *event)
 789 {
 790   GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
 791   GtkSpinButtonPrivate *priv = spin->priv;
 792
 793   if (gtk_widget_is_drawable (widget))
 794     {
 795       if (event->window == priv->panel)
 796         {
 797           GtkShadowType shadow_type;
 798
 799           shadow_type = spin_button_get_shadow_type (spin);
 800
 801           if (shadow_type != GTK_SHADOW_NONE)
 802             {
 803               gint width, height;
 804               GtkStateType state;
 805
 806               state = gtk_widget_has_focus (widget) ?
 807                 GTK_STATE_ACTIVE : gtk_widget_get_state (widget);
 808
 809               gdk_drawable_get_size (priv->panel, &width, &height);
 810
 811               gtk_paint_box (gtk_widget_get_style (widget), priv->panel,
 812                              state, shadow_type,
 813                              &event->area, widget, "spinbutton",
 814                              0, 0, width, height);
 815             }
 816
 817           gtk_spin_button_draw_arrow (spin, &event->area, GTK_ARROW_UP);
 818           gtk_spin_button_draw_arrow (spin, &event->area, GTK_ARROW_DOWN);
 819         }
 820       else
 821         GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->expose_event (widget, event);
 822     }
 823
 824   return FALSE;
 825 }
 826
 827 static gboolean
 828 spin_button_at_limit (GtkSpinButton *spin_button,
 829                      GtkArrowType   arrow)
 830 {
 831   GtkSpinButtonPrivate *priv = spin_button->priv;
 832   GtkArrowType effective_arrow;
 833
 834   if (priv->wrap)
 835     return FALSE;
 836
 837   if (priv->adjustment->step_increment > 0)
 838     effective_arrow = arrow;
 839   else
 840     effective_arrow = arrow == GTK_ARROW_UP ? GTK_ARROW_DOWN : GTK_ARROW_UP;
 841
 842   if (effective_arrow == GTK_ARROW_UP &&
 843       (priv->adjustment->upper - priv->adjustment->value <= EPSILON))
 844     return TRUE;
 845
 846   if (effective_arrow == GTK_ARROW_DOWN &&
 847       (priv->adjustment->value - priv->adjustment->lower <= EPSILON))
 848     return TRUE;
 849
 850   return FALSE;
 851 }
 852
 853 static void
 854 gtk_spin_button_draw_arrow (GtkSpinButton *spin_button,
 855                             GdkRectangle  *area,
 856                             GtkArrowType   arrow_type)
 857 {
 858   GtkSpinButtonPrivate *priv;
 859   GtkStateType state_type;
 860   GtkShadowType shadow_type;
 861   GtkStyle *style;
 862   GtkWidget *widget;
 863   gint x;
 864   gint y;
 865   gint height;
 866   gint width;
 867   gint h, w;
 868
 869   g_return_if_fail (arrow_type == GTK_ARROW_UP || arrow_type == GTK_ARROW_DOWN);
 870
 871   priv = spin_button->priv;
 872   widget = GTK_WIDGET (spin_button);
 873
 874   if (gtk_widget_is_drawable (widget))
 875     {
 876       GtkRequisition requisition;
 877
 878       style = gtk_widget_get_style (widget);
 879       gtk_size_request_get_size (GTK_SIZE_REQUEST (widget), &requisition, NULL);
 880
 881       width = spin_button_get_arrow_size (spin_button) + 2 * style->xthickness;
 882
 883       if (arrow_type == GTK_ARROW_UP)
 884         {
 885           x = 0;
 886           y = 0;
 887
 888           height = requisition.height / 2;
 889         }
 890       else
 891         {
 892           x = 0;
 893           y = requisition.height / 2;
 894
 895           height = (requisition.height + 1) / 2;
 896         }
 897
 898       if (spin_button_at_limit (spin_button, arrow_type))
 899         {
 900           shadow_type = GTK_SHADOW_OUT;
 901           state_type = GTK_STATE_INSENSITIVE;
 902         }
 903       else
 904         {
 905           if (priv->click_child == arrow_type)
 906             {
 907               state_type = GTK_STATE_ACTIVE;
 908               shadow_type = GTK_SHADOW_IN;
 909             }
 910           else
 911             {
 912               if (priv->in_child == arrow_type &&
 913                   priv->click_child == NO_ARROW)
 914                 {
 915                   state_type = GTK_STATE_PRELIGHT;
 916                 }
 917               else
 918                 {
 919                   state_type = gtk_widget_get_state (widget);
 920                 }
 921
 922               shadow_type = GTK_SHADOW_OUT;
 923             }
 924         }
 925
 926       gtk_paint_box (style, priv->panel,
 927                      state_type, shadow_type,
 928                      area, widget,
 929                      (arrow_type == GTK_ARROW_UP)? "spinbutton_up" : "spinbutton_down",
 930                      x, y, width, height);
 931
 932       height = requisition.height;
 933
 934       if (arrow_type == GTK_ARROW_DOWN)
 935         {
 936           y = height / 2;
 937           height = height - y - 2;
 938         }
 939       else
 940         {
 941           y = 2;
 942           height = height / 2 - 2;
 943         }
 944
 945       width -= 3;
 946
 947       if (widget && gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 948         x = 2;
 949       else
 950         x = 1;
 951
 952       w = width / 2;
 953       w -= w % 2 - 1; /* force odd */
 954       h = (w + 1) / 2;
 955
 956       x += (width - w) / 2;
 957       y += (height - h) / 2;
 958
 959       height = h;
 960       width = w;
 961
 962       gtk_paint_arrow (style, priv->panel,
 963                        state_type, shadow_type,
 964                        area, widget, "spinbutton",
 965                        arrow_type, TRUE,
 966                        x, y, width, height);
 967     }
 968 }
 969
 970 static gint
 971 gtk_spin_button_enter_notify (GtkWidget        *widget,
 972                               GdkEventCrossing *event)
 973 {
 974   GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
 975   GtkSpinButtonPrivate *priv = spin->priv;
 976   GtkRequisition requisition;
 977
 978   if (event->window == priv->panel)
 979     {
 980       GdkDevice *device;
 981       gint x;
 982       gint y;
 983
 984       device = gdk_event_get_device ((GdkEvent *) event);
 985       gdk_window_get_device_position (priv->panel, device, &x, &y, NULL);
 986
 987       gtk_size_request_get_size (GTK_SIZE_REQUEST (widget), &requisition, NULL);
 988
 989       if (y <= requisition.height / 2)
 990         priv->in_child = GTK_ARROW_UP;
 991       else
 992         priv->in_child = GTK_ARROW_DOWN;
 993
 994       gtk_widget_queue_draw (GTK_WIDGET (spin));
 995     }
 996
 997   if (GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->enter_notify_event)
 998     return GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->enter_notify_event (widget, event);
 999
1000   return FALSE;
1001 }
1002
1003 static gint
1004 gtk_spin_button_leave_notify (GtkWidget        *widget,
1005                               GdkEventCrossing *event)
1006 {
1007   GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
1008   GtkSpinButtonPrivate *priv = spin->priv;
1009
1010   priv->in_child = NO_ARROW;
1011   gtk_widget_queue_draw (GTK_WIDGET (spin));
1012
1013   if (GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->leave_notify_event)
1014     return GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->leave_notify_event (widget, event);
1015
1016   return FALSE;
1017 }
1018
1019 static gint
1020 gtk_spin_button_focus_out (GtkWidget     *widget,
1021                            GdkEventFocus *event)
1022 {
1023   if (GTK_ENTRY (widget)->editable)
1024     gtk_spin_button_update (GTK_SPIN_BUTTON (widget));
1025
1026   return GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->focus_out_event (widget, event);
1027 }
1028
1029 static void
1030 gtk_spin_button_grab_notify (GtkWidget *widget,
1031                              gboolean   was_grabbed)
1032 {
1033   GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
1034
1035   if (!was_grabbed)
1036     {
1037       gtk_spin_button_stop_spinning (spin);
1038       gtk_widget_queue_draw (GTK_WIDGET (spin));
1039     }
1040 }
1041
1042 static void
1043 gtk_spin_button_state_changed (GtkWidget    *widget,
1044                                GtkStateType  previous_state)
1045 {
1046   GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
1047
1048   if (!gtk_widget_is_sensitive (widget))
1049     {
1050       gtk_spin_button_stop_spinning (spin);
1051       gtk_widget_queue_draw (GTK_WIDGET (spin));
1052     }
1053 }
1054
1055 static void
1056 gtk_spin_button_style_set (GtkWidget *widget,
1057                            GtkStyle  *previous_style)
1058 {
1059   GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
1060   GtkSpinButtonPrivate *priv = spin->priv;
1061
1062   if (previous_style && gtk_widget_get_realized (widget))
1063     gtk_style_set_background (gtk_widget_get_style (widget),
1064                               priv->panel, GTK_STATE_NORMAL);
1065
1066   GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->style_set (widget, previous_style);
1067 }
1068
1069
1070 static gint
1071 gtk_spin_button_scroll (GtkWidget      *widget,
1072                         GdkEventScroll *event)
1073 {
1074   GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
1075   GtkSpinButtonPrivate *priv = spin->priv;
1076
1077   if (event->direction == GDK_SCROLL_UP)
1078     {
1079       if (!gtk_widget_has_focus (widget))
1080         gtk_widget_grab_focus (widget);
1081       gtk_spin_button_real_spin (spin, priv->adjustment->step_increment);
1082     }
1083   else if (event->direction == GDK_SCROLL_DOWN)
1084     {
1085       if (!gtk_widget_has_focus (widget))
1086         gtk_widget_grab_focus (widget);
1087       gtk_spin_button_real_spin (spin, -priv->adjustment->step_increment);
1088     }
1089   else
1090     return FALSE;
1091
1092   return TRUE;
1093 }
1094
1095 static void
1096 gtk_spin_button_stop_spinning (GtkSpinButton *spin)
1097 {
1098   GtkSpinButtonPrivate *priv = spin->priv;
1099
1100   if (priv->timer)
1101     {
1102       g_source_remove (priv->timer);
1103       priv->timer = 0;
1104       priv->timer_calls = 0;
1105       priv->need_timer = FALSE;
1106     }
1107
1108   priv->button = 0;
1109   priv->timer = 0;
1110   priv->timer_step = priv->adjustment->step_increment;
1111   priv->timer_calls = 0;
1112
1113   priv->click_child = NO_ARROW;
1114   priv->button = 0;
1115 }
1116
1117 static void
1118 start_spinning (GtkSpinButton *spin,
1119                 GtkArrowType   click_child,
1120                 gdouble        step)
1121 {
1122   GtkSpinButtonPrivate *priv;
1123
1124   g_return_if_fail (click_child == GTK_ARROW_UP || click_child == GTK_ARROW_DOWN);
1125
1126   priv = spin->priv;
1127
1128   priv->click_child = click_child;
1129
1130   if (!priv->timer)
1131     {
1132       GtkSettings *settings = gtk_widget_get_settings (GTK_WIDGET (spin));
1133       guint        timeout;
1134
1135       g_object_get (settings, "gtk-timeout-initial", &timeout, NULL);
1136
1137       priv->timer_step = step;
1138       priv->need_timer = TRUE;
1139       priv->timer = gdk_threads_add_timeout (timeout,
1140                                    (GSourceFunc) gtk_spin_button_timer,
1141                                    (gpointer) spin);
1142     }
1143   gtk_spin_button_real_spin (spin, click_child == GTK_ARROW_UP ? step : -step);
1144
1145   gtk_widget_queue_draw (GTK_WIDGET (spin));
1146 }
1147
1148 static gint
1149 gtk_spin_button_button_press (GtkWidget      *widget,
1150                               GdkEventButton *event)
1151 {
1152   GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
1153   GtkSpinButtonPrivate *priv = spin->priv;
1154
1155   if (!priv->button)
1156     {
1157       if (event->window == priv->panel)
1158         {
1159           GtkRequisition requisition;
1160
1161           if (!gtk_widget_has_focus (widget))
1162             gtk_widget_grab_focus (widget);
1163           priv->button = event->button;
1164
1165           if (GTK_ENTRY (widget)->editable)
1166             gtk_spin_button_update (spin);
1167
1168           gtk_size_request_get_size (GTK_SIZE_REQUEST (widget), &requisition, NULL);
1169
1170           if (event->y <= requisition.height / 2)
1171             {
1172               if (event->button == 1)
1173                 start_spinning (spin, GTK_ARROW_UP, priv->adjustment->step_increment);
1174               else if (event->button == 2)
1175                 start_spinning (spin, GTK_ARROW_UP, priv->adjustment->page_increment);
1176               else
1177                 priv->click_child = GTK_ARROW_UP;
1178             }
1179           else
1180             {
1181               if (event->button == 1)
1182                 start_spinning (spin, GTK_ARROW_DOWN, priv->adjustment->step_increment);
1183               else if (event->button == 2)
1184                 start_spinning (spin, GTK_ARROW_DOWN, priv->adjustment->page_increment);
1185               else
1186                 priv->click_child = GTK_ARROW_DOWN;
1187             }
1188           return TRUE;
1189         }
1190       else
1191         return GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->button_press_event (widget, event);
1192     }
1193   return FALSE;
1194 }
1195
1196 static gint
1197 gtk_spin_button_button_release (GtkWidget      *widget,
1198                                 GdkEventButton *event)
1199 {
1200   GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
1201   GtkSpinButtonPrivate *priv = spin->priv;
1202   gint arrow_size;
1203
1204   arrow_size = spin_button_get_arrow_size (spin);
1205
1206   if (event->button == priv->button)
1207     {
1208       int click_child = priv->click_child;
1209
1210       gtk_spin_button_stop_spinning (spin);
1211
1212       if (event->button == 3)
1213         {
1214           GtkRequisition requisition;
1215
1216           gtk_size_request_get_size (GTK_SIZE_REQUEST (widget), &requisition, NULL);
1217
1218           if (event->y >= 0 && event->x >= 0 &&
1219               event->y <= requisition.height &&
1220               event->x <= arrow_size + 2 * gtk_widget_get_style (widget)->xthickness)
1221             {
1222               if (click_child == GTK_ARROW_UP &&
1223                   event->y <= requisition.height / 2)
1224                 {
1225                   gdouble diff;
1226
1227                   diff = priv->adjustment->upper - priv->adjustment->value;
1228                   if (diff > EPSILON)
1229                     gtk_spin_button_real_spin (spin, diff);
1230                 }
1231               else if (click_child == GTK_ARROW_DOWN &&
1232                        event->y > requisition.height / 2)
1233                 {
1234                   gdouble diff;
1235
1236                   diff = priv->adjustment->value - priv->adjustment->lower;
1237                   if (diff > EPSILON)
1238                     gtk_spin_button_real_spin (spin, -diff);
1239                 }
1240             }
1241         }
1242       gtk_widget_queue_draw (GTK_WIDGET (spin));
1243
1244       return TRUE;
1245     }
1246   else
1247     return GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->button_release_event (widget, event);
1248 }
1249
1250 static gint
1251 gtk_spin_button_motion_notify (GtkWidget      *widget,
1252                                GdkEventMotion *event)
1253 {
1254   GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
1255   GtkSpinButtonPrivate *priv = spin->priv;
1256
1257   if (priv->button)
1258     return FALSE;
1259
1260   if (event->window == priv->panel)
1261     {
1262       GtkRequisition requisition;
1263       gint y = event->y;
1264
1265       gdk_event_request_motions (event);
1266
1267       gtk_size_request_get_size (GTK_SIZE_REQUEST (widget), &requisition, NULL);
1268
1269       if (y <= requisition.height / 2 &&
1270           priv->in_child == GTK_ARROW_DOWN)
1271         {
1272           priv->in_child = GTK_ARROW_UP;
1273           gtk_widget_queue_draw (GTK_WIDGET (spin));
1274         }
1275       else if (y > requisition.height / 2 &&
1276           priv->in_child == GTK_ARROW_UP)
1277         {
1278           priv->in_child = GTK_ARROW_DOWN;
1279           gtk_widget_queue_draw (GTK_WIDGET (spin));
1280         }
1281
1282       return FALSE;
1283     }
1284
1285   return GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->motion_notify_event (widget, event);
1286 }
1287
1288 static gint
1289 gtk_spin_button_timer (GtkSpinButton *spin_button)
1290 {
1291   GtkSpinButtonPrivate *priv = spin_button->priv;
1292   gboolean retval = FALSE;
1293
1294   if (priv->timer)
1295     {
1296       if (priv->click_child == GTK_ARROW_UP)
1297         gtk_spin_button_real_spin (spin_button, priv->timer_step);
1298       else
1299         gtk_spin_button_real_spin (spin_button, -priv->timer_step);
1300
1301       if (priv->need_timer)
1302         {
1303           GtkSettings *settings = gtk_widget_get_settings (GTK_WIDGET (spin_button));
1304           guint        timeout;
1305
1306           g_object_get (settings, "gtk-timeout-repeat", &timeout, NULL);
1307
1308           priv->need_timer = FALSE;
1309           priv->timer = gdk_threads_add_timeout (timeout,
1310                                               (GSourceFunc) gtk_spin_button_timer,
1311                                               (gpointer) spin_button);
1312         }
1313       else
1314         {
1315           if (priv->climb_rate > 0.0 && priv->timer_step
1316               < priv->adjustment->page_increment)
1317             {
1318               if (priv->timer_calls < MAX_TIMER_CALLS)
1319                 priv->timer_calls++;
1320               else
1321                 {
1322                   priv->timer_calls = 0;
1323                   priv->timer_step += priv->climb_rate;
1324                 }
1325             }
1326           retval = TRUE;
1327         }
1328     }
1329
1330   return retval;
1331 }
1332
1333 static void
1334 gtk_spin_button_value_changed (GtkAdjustment *adjustment,
1335                                GtkSpinButton *spin_button)
1336 {
1337   gboolean return_val;
1338
1339   g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
1340
1341   return_val = FALSE;
1342   g_signal_emit (spin_button, spinbutton_signals[OUTPUT], 0, &return_val);
1343   if (return_val == FALSE)
1344     gtk_spin_button_default_output (spin_button);
1345
1346   g_signal_emit (spin_button, spinbutton_signals[VALUE_CHANGED], 0);
1347
1348   gtk_widget_queue_draw (GTK_WIDGET (spin_button));
1349
1350   g_object_notify (G_OBJECT (spin_button), "value");
1351 }
1352
1353 static void
1354 gtk_spin_button_real_change_value (GtkSpinButton *spin,
1355                                    GtkScrollType  scroll)
1356 {
1357   GtkSpinButtonPrivate *priv = spin->priv;
1358   gdouble old_value;
1359
1360   /* When the key binding is activated, there may be an outstanding
1361    * value, so we first have to commit what is currently written in
1362    * the spin buttons text entry. See #106574
1363    */
1364   gtk_spin_button_update (spin);
1365
1366   old_value = priv->adjustment->value;
1367
1368   /* We don't test whether the entry is editable, since
1369    * this key binding conceptually corresponds to changing
1370    * the value with the buttons using the mouse, which
1371    * we allow for non-editable spin buttons.
1372    */
1373   switch (scroll)
1374     {
1375     case GTK_SCROLL_STEP_BACKWARD:
1376     case GTK_SCROLL_STEP_DOWN:
1377     case GTK_SCROLL_STEP_LEFT:
1378       gtk_spin_button_real_spin (spin, -priv->timer_step);
1379
1380       if (priv->climb_rate > 0.0 && priv->timer_step
1381           < priv->adjustment->page_increment)
1382         {
1383           if (priv->timer_calls < MAX_TIMER_CALLS)
1384             priv->timer_calls++;
1385           else
1386             {
1387               priv->timer_calls = 0;
1388               priv->timer_step += priv->climb_rate;
1389             }
1390         }
1391       break;
1392
1393     case GTK_SCROLL_STEP_FORWARD:
1394     case GTK_SCROLL_STEP_UP:
1395     case GTK_SCROLL_STEP_RIGHT:
1396       gtk_spin_button_real_spin (spin, priv->timer_step);
1397
1398       if (priv->climb_rate > 0.0 && priv->timer_step
1399           < priv->adjustment->page_increment)
1400         {
1401           if (priv->timer_calls < MAX_TIMER_CALLS)
1402             priv->timer_calls++;
1403           else
1404             {
1405               priv->timer_calls = 0;
1406               priv->timer_step += priv->climb_rate;
1407             }
1408         }
1409       break;
1410
1411     case GTK_SCROLL_PAGE_BACKWARD:
1412     case GTK_SCROLL_PAGE_DOWN:
1413     case GTK_SCROLL_PAGE_LEFT:
1414       gtk_spin_button_real_spin (spin, -priv->adjustment->page_increment);
1415       break;
1416
1417     case GTK_SCROLL_PAGE_FORWARD:
1418     case GTK_SCROLL_PAGE_UP:
1419     case GTK_SCROLL_PAGE_RIGHT:
1420       gtk_spin_button_real_spin (spin, priv->adjustment->page_increment);
1421       break;
1422
1423     case GTK_SCROLL_START:
1424       {
1425         gdouble diff = priv->adjustment->value - priv->adjustment->lower;
1426         if (diff > EPSILON)
1427           gtk_spin_button_real_spin (spin, -diff);
1428         break;
1429       }
1430
1431     case GTK_SCROLL_END:
1432       {
1433         gdouble diff = priv->adjustment->upper - priv->adjustment->value;
1434         if (diff > EPSILON)
1435           gtk_spin_button_real_spin (spin, diff);
1436         break;
1437       }
1438
1439     default:
1440       g_warning ("Invalid scroll type %d for GtkSpinButton::change-value", scroll);
1441       break;
1442     }
1443
1444   gtk_spin_button_update (spin);
1445
1446   if (priv->adjustment->value == old_value)
1447     gtk_widget_error_bell (GTK_WIDGET (spin));
1448 }
1449
1450 static gint
1451 gtk_spin_button_key_release (GtkWidget   *widget,
1452                              GdkEventKey *event)
1453 {
1454   GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
1455   GtkSpinButtonPrivate *priv = spin->priv;
1456
1457   /* We only get a release at the end of a key repeat run, so reset the timer_step */
1458   priv->timer_step = priv->adjustment->step_increment;
1459   priv->timer_calls = 0;
1460
1461   return TRUE;
1462 }
1463
1464 static void
1465 gtk_spin_button_snap (GtkSpinButton *spin_button,
1466                       gdouble        val)
1467 {
1468   GtkSpinButtonPrivate *priv = spin_button->priv;
1469   gdouble inc;
1470   gdouble tmp;
1471
1472   inc = priv->adjustment->step_increment;
1473   if (inc == 0)
1474     return;
1475
1476   tmp = (val - priv->adjustment->lower) / inc;
1477   if (tmp - floor (tmp) < ceil (tmp) - tmp)
1478     val = priv->adjustment->lower + floor (tmp) * inc;
1479   else
1480     val = priv->adjustment->lower + ceil (tmp) * inc;
1481
1482   gtk_spin_button_set_value (spin_button, val);
1483 }
1484
1485 static void
1486 gtk_spin_button_activate (GtkEntry *entry)
1487 {
1488   if (entry->editable)
1489     gtk_spin_button_update (GTK_SPIN_BUTTON (entry));
1490
1491   /* Chain up so that entry->activates_default is honored */
1492   GTK_ENTRY_CLASS (gtk_spin_button_parent_class)->activate (entry);
1493 }
1494
1495 static void
1496 gtk_spin_button_get_text_area_size (GtkEntry *entry,
1497                                     gint     *x,
1498                                     gint     *y,
1499                                     gint     *width,
1500                                     gint     *height)
1501 {
1502   gint arrow_size;
1503   gint panel_width;
1504
1505   GTK_ENTRY_CLASS (gtk_spin_button_parent_class)->get_text_area_size (entry, x, y, width, height);
1506
1507   arrow_size = spin_button_get_arrow_size (GTK_SPIN_BUTTON (entry));
1508   panel_width = arrow_size + 2 * gtk_widget_get_style (GTK_WIDGET (entry))->xthickness;
1509
1510   if (width)
1511     *width -= panel_width;
1512
1513   if (gtk_widget_get_direction (GTK_WIDGET (entry)) == GTK_TEXT_DIR_RTL && x)
1514     *x += panel_width;
1515 }
1516
1517 static void
1518 gtk_spin_button_insert_text (GtkEditable *editable,
1519                              const gchar *new_text,
1520                              gint         new_text_length,
1521                              gint        *position)
1522 {
1523   GtkEntry *entry = GTK_ENTRY (editable);
1524   GtkSpinButton *spin = GTK_SPIN_BUTTON (editable);
1525   GtkSpinButtonPrivate *priv = spin->priv;
1526   GtkEditableInterface *parent_editable_iface;
1527
1528   parent_editable_iface = g_type_interface_peek (gtk_spin_button_parent_class,
1529                                                  GTK_TYPE_EDITABLE);
1530
1531   if (priv->numeric)
1532     {
1533       struct lconv *lc;
1534       gboolean sign;
1535       gint dotpos = -1;
1536       gint i;
1537       guint32 pos_sign;
1538       guint32 neg_sign;
1539       gint entry_length;
1540       const gchar *entry_text;
1541
1542       entry_length = gtk_entry_get_text_length (entry);
1543       entry_text = gtk_entry_get_text (entry);
1544
1545       lc = localeconv ();
1546
1547       if (*(lc->negative_sign))
1548         neg_sign = *(lc->negative_sign);
1549       else
1550         neg_sign = '-';
1551
1552       if (*(lc->positive_sign))
1553         pos_sign = *(lc->positive_sign);
1554       else
1555         pos_sign = '+';
1556
1557 #ifdef G_OS_WIN32
1558       /* Workaround for bug caused by some Windows application messing
1559        * up the positive sign of the current locale, more specifically
1560        * HKEY_CURRENT_USER\Control Panel\International\sPositiveSign.
1561        * See bug #330743 and for instance
1562        * http://www.msnewsgroups.net/group/microsoft.public.dotnet.languages.csharp/topic36024.aspx
1563        *
1564        * I don't know if the positive sign always gets bogusly set to
1565        * a digit when the above Registry value is corrupted as
1566        * described. (In my test case, it got set to "8", and in the
1567        * bug report above it presumably was set ot "0".) Probably it
1568        * might get set to almost anything? So how to distinguish a
1569        * bogus value from some correct one for some locale? That is
1570        * probably hard, but at least we should filter out the
1571        * digits...
1572        */
1573       if (pos_sign >= '0' && pos_sign <= '9')
1574         pos_sign = '+';
1575 #endif
1576
1577       for (sign=0, i=0; i<entry_length; i++)
1578         if ((entry_text[i] == neg_sign) ||
1579             (entry_text[i] == pos_sign))
1580           {
1581             sign = 1;
1582             break;
1583           }
1584
1585       if (sign && !(*position))
1586         return;
1587
1588       for (dotpos=-1, i=0; i<entry_length; i++)
1589         if (entry_text[i] == *(lc->decimal_point))
1590           {
1591             dotpos = i;
1592             break;
1593           }
1594
1595       if (dotpos > -1 && *position > dotpos &&
1596           (gint)priv->digits - entry_length
1597             + dotpos - new_text_length + 1 < 0)
1598         return;
1599
1600       for (i = 0; i < new_text_length; i++)
1601         {
1602           if (new_text[i] == neg_sign || new_text[i] == pos_sign)
1603             {
1604               if (sign || (*position) || i)
1605                 return;
1606               sign = TRUE;
1607             }
1608           else if (new_text[i] == *(lc->decimal_point))
1609             {
1610               if (!priv->digits || dotpos > -1 ||
1611                   (new_text_length - 1 - i + entry_length
1612                     - *position > (gint)priv->digits))
1613                 return;
1614               dotpos = *position + i;
1615             }
1616           else if (new_text[i] < 0x30 || new_text[i] > 0x39)
1617             return;
1618         }
1619     }
1620
1621   parent_editable_iface->insert_text (editable, new_text,
1622                                       new_text_length, position);
1623 }
1624
1625 static void
1626 gtk_spin_button_real_spin (GtkSpinButton *spin_button,
1627                            gdouble        increment)
1628 {
1629   GtkSpinButtonPrivate *priv = spin_button->priv;
1630   GtkAdjustment *adj;
1631   gdouble new_value = 0.0;
1632   gboolean wrapped = FALSE;
1633
1634   adj = priv->adjustment;
1635
1636   new_value = adj->value + increment;
1637
1638   if (increment > 0)
1639     {
1640       if (priv->wrap)
1641         {
1642           if (fabs (adj->value - adj->upper) < EPSILON)
1643             {
1644               new_value = adj->lower;
1645               wrapped = TRUE;
1646             }
1647           else if (new_value > adj->upper)
1648             new_value = adj->upper;
1649         }
1650       else
1651         new_value = MIN (new_value, adj->upper);
1652     }
1653   else if (increment < 0)
1654     {
1655       if (priv->wrap)
1656         {
1657           if (fabs (adj->value - adj->lower) < EPSILON)
1658             {
1659               new_value = adj->upper;
1660               wrapped = TRUE;
1661             }
1662           else if (new_value < adj->lower)
1663             new_value = adj->lower;
1664         }
1665       else
1666         new_value = MAX (new_value, adj->lower);
1667     }
1668
1669   if (fabs (new_value - adj->value) > EPSILON)
1670     gtk_adjustment_set_value (adj, new_value);
1671
1672   if (wrapped)
1673     g_signal_emit (spin_button, spinbutton_signals[WRAPPED], 0);
1674
1675   gtk_widget_queue_draw (GTK_WIDGET (spin_button));
1676 }
1677
1678 static gint
1679 gtk_spin_button_default_input (GtkSpinButton *spin_button,
1680                                gdouble       *new_val)
1681 {
1682   gchar *err = NULL;
1683
1684   *new_val = g_strtod (gtk_entry_get_text (GTK_ENTRY (spin_button)), &err);
1685   if (*err)
1686     return GTK_INPUT_ERROR;
1687   else
1688     return FALSE;
1689 }
1690
1691 static gint
1692 gtk_spin_button_default_output (GtkSpinButton *spin_button)
1693 {
1694   GtkSpinButtonPrivate *priv = spin_button->priv;
1695
1696   gchar *buf = g_strdup_printf ("%0.*f", priv->digits, priv->adjustment->value);
1697
1698   if (strcmp (buf, gtk_entry_get_text (GTK_ENTRY (spin_button))))
1699     gtk_entry_set_text (GTK_ENTRY (spin_button), buf);
1700   g_free (buf);
1701   return FALSE;
1702 }
1703
1704
1705 /***********************************************************
1706  ***********************************************************
1707  ***                  Public interface                   ***
1708  ***********************************************************
1709  ***********************************************************/
1710
1711
1712 /**
1713  * gtk_spin_button_configure:
1714  * @spin_button: a #GtkSpinButton
1715  * @adjustment: (allow-none):  a #GtkAdjustment.
1716  * @climb_rate: the new climb rate.
1717  * @digits: the number of decimal places to display in the spin button.
1718  *
1719  * Changes the properties of an existing spin button. The adjustment, climb rate,
1720  * and number of decimal places are all changed accordingly, after this function call.
1721  */
1722 void
1723 gtk_spin_button_configure (GtkSpinButton  *spin_button,
1724                            GtkAdjustment  *adjustment,
1725                            gdouble         climb_rate,
1726                            guint           digits)
1727 {
1728   GtkSpinButtonPrivate *priv;
1729
1730   g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
1731
1732   priv = spin_button->priv;
1733
1734   if (adjustment)
1735     gtk_spin_button_set_adjustment (spin_button, adjustment);
1736   else
1737     adjustment = priv->adjustment;
1738
1739   g_object_freeze_notify (G_OBJECT (spin_button));
1740   if (priv->digits != digits)
1741     {
1742       priv->digits = digits;
1743       g_object_notify (G_OBJECT (spin_button), "digits");
1744     }
1745
1746   if (priv->climb_rate != climb_rate)
1747     {
1748       priv->climb_rate = climb_rate;
1749       g_object_notify (G_OBJECT (spin_button), "climb-rate");
1750     }
1751   g_object_thaw_notify (G_OBJECT (spin_button));
1752
1753   gtk_adjustment_value_changed (adjustment);
1754 }
1755
1756 GtkWidget *
1757 gtk_spin_button_new (GtkAdjustment *adjustment,
1758                      gdouble        climb_rate,
1759                      guint          digits)
1760 {
1761   GtkSpinButton *spin;
1762
1763   if (adjustment)
1764     g_return_val_if_fail (GTK_IS_ADJUSTMENT (adjustment), NULL);
1765
1766   spin = g_object_new (GTK_TYPE_SPIN_BUTTON, NULL);
1767
1768   gtk_spin_button_configure (spin, adjustment, climb_rate, digits);
1769
1770   return GTK_WIDGET (spin);
1771 }
1772
1773 /**
1774  * gtk_spin_button_new_with_range:
1775  * @min: Minimum allowable value
1776  * @max: Maximum allowable value
1777  * @step: Increment added or subtracted by spinning the widget
1778  *
1779  * This is a convenience constructor that allows creation of a numeric
1780  * #GtkSpinButton without manually creating an adjustment. The value is
1781  * initially set to the minimum value and a page increment of 10 * @step
1782  * is the default. The precision of the spin button is equivalent to the
1783  * precision of @step.
1784  *
1785  * Note that the way in which the precision is derived works best if @step
1786  * is a power of ten. If the resulting precision is not suitable for your
1787  * needs, use gtk_spin_button_set_digits() to correct it.
1788  *
1789  * Return value: The new spin button as a #GtkWidget.
1790  **/
1791 GtkWidget *
1792 gtk_spin_button_new_with_range (gdouble min,
1793                                 gdouble max,
1794                                 gdouble step)
1795 {
1796   GtkObject *adj;
1797   GtkSpinButton *spin;
1798   gint digits;
1799
1800   g_return_val_if_fail (min <= max, NULL);
1801   g_return_val_if_fail (step != 0.0, NULL);
1802
1803   spin = g_object_new (GTK_TYPE_SPIN_BUTTON, NULL);
1804
1805   adj = gtk_adjustment_new (min, min, max, step, 10 * step, 0);
1806
1807   if (fabs (step) >= 1.0 || step == 0.0)
1808     digits = 0;
1809   else {
1810     digits = abs ((gint) floor (log10 (fabs (step))));
1811     if (digits > MAX_DIGITS)
1812       digits = MAX_DIGITS;
1813   }
1814
1815   gtk_spin_button_configure (spin, GTK_ADJUSTMENT (adj), step, digits);
1816
1817   gtk_spin_button_set_numeric (spin, TRUE);
1818
1819   return GTK_WIDGET (spin);
1820 }
1821
1822 /* Callback used when the spin button's adjustment changes.  We need to redraw
1823  * the arrows when the adjustment's range changes, and reevaluate our size request.
1824  */
1825 static void
1826 adjustment_changed_cb (GtkAdjustment *adjustment, gpointer data)
1827 {
1828   GtkSpinButton *spin_button = GTK_SPIN_BUTTON (data);
1829   GtkSpinButtonPrivate *priv = spin_button->priv;
1830
1831   priv->timer_step = priv->adjustment->step_increment;
1832   gtk_widget_queue_resize (GTK_WIDGET (spin_button));
1833 }
1834
1835 /**
1836  * gtk_spin_button_set_adjustment:
1837  * @spin_button: a #GtkSpinButton
1838  * @adjustment: a #GtkAdjustment to replace the existing adjustment
1839  *
1840  * Replaces the #GtkAdjustment associated with @spin_button.
1841  **/
1842 void
1843 gtk_spin_button_set_adjustment (GtkSpinButton *spin_button,
1844                                 GtkAdjustment *adjustment)
1845 {
1846   GtkSpinButtonPrivate *priv;
1847
1848   g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
1849
1850   priv = spin_button->priv;
1851
1852   if (priv->adjustment != adjustment)
1853     {
1854       if (priv->adjustment)
1855         {
1856           g_signal_handlers_disconnect_by_func (priv->adjustment,
1857                                                 gtk_spin_button_value_changed,
1858                                                 spin_button);
1859           g_signal_handlers_disconnect_by_func (priv->adjustment,
1860                                                 adjustment_changed_cb,
1861                                                 spin_button);
1862           g_object_unref (priv->adjustment);
1863         }
1864       priv->adjustment = adjustment;
1865       if (adjustment)
1866         {
1867           g_object_ref_sink (adjustment);
1868           g_signal_connect (adjustment, "value-changed",
1869                             G_CALLBACK (gtk_spin_button_value_changed),
1870                             spin_button);
1871           g_signal_connect (adjustment, "changed",
1872                             G_CALLBACK (adjustment_changed_cb),
1873                             spin_button);
1874           priv->timer_step = priv->adjustment->step_increment;
1875         }
1876
1877       gtk_widget_queue_resize (GTK_WIDGET (spin_button));
1878     }
1879
1880   g_object_notify (G_OBJECT (spin_button), "adjustment");
1881 }
1882
1883 /**
1884  * gtk_spin_button_get_adjustment:
1885  * @spin_button: a #GtkSpinButton
1886  *
1887  * Get the adjustment associated with a #GtkSpinButton
1888  *
1889  * Return value: (transfer none): the #GtkAdjustment of @spin_button
1890  **/
1891 GtkAdjustment *
1892 gtk_spin_button_get_adjustment (GtkSpinButton *spin_button)
1893 {
1894   g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spin_button), NULL);
1895
1896   return spin_button->priv->adjustment;
1897 }
1898
1899 /**
1900  * gtk_spin_button_set_digits:
1901  * @spin_button: a #GtkSpinButton
1902  * @digits: the number of digits after the decimal point to be displayed for the spin button's value
1903  *
1904  * Set the precision to be displayed by @spin_button. Up to 20 digit precision
1905  * is allowed.
1906  **/
1907 void
1908 gtk_spin_button_set_digits (GtkSpinButton *spin_button,
1909                             guint          digits)
1910 {
1911   GtkSpinButtonPrivate *priv;
1912
1913   g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
1914
1915   priv = spin_button->priv;
1916
1917   if (priv->digits != digits)
1918     {
1919       priv->digits = digits;
1920       gtk_spin_button_value_changed (priv->adjustment, spin_button);
1921       g_object_notify (G_OBJECT (spin_button), "digits");
1922
1923       /* since lower/upper may have changed */
1924       gtk_widget_queue_resize (GTK_WIDGET (spin_button));
1925     }
1926 }
1927
1928 /**
1929  * gtk_spin_button_get_digits:
1930  * @spin_button: a #GtkSpinButton
1931  *
1932  * Fetches the precision of @spin_button. See gtk_spin_button_set_digits().
1933  *
1934  * Returns: the current precision
1935  **/
1936 guint
1937 gtk_spin_button_get_digits (GtkSpinButton *spin_button)
1938 {
1939   g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spin_button), 0);
1940
1941   return spin_button->priv->digits;
1942 }
1943
1944 /**
1945  * gtk_spin_button_set_increments:
1946  * @spin_button: a #GtkSpinButton
1947  * @step: increment applied for a button 1 press.
1948  * @page: increment applied for a button 2 press.
1949  *
1950  * Sets the step and page increments for spin_button.  This affects how
1951  * quickly the value changes when the spin button's arrows are activated.
1952  **/
1953 void
1954 gtk_spin_button_set_increments (GtkSpinButton *spin_button,
1955                                 gdouble        step,
1956                                 gdouble        page)
1957 {
1958   GtkSpinButtonPrivate *priv;
1959
1960   g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
1961
1962   priv = spin_button->priv;
1963
1964   priv->adjustment->step_increment = step;
1965   priv->adjustment->page_increment = page;
1966 }
1967
1968 /**
1969  * gtk_spin_button_get_increments:
1970  * @spin_button: a #GtkSpinButton
1971  * @step: (allow-none): location to store step increment, or %NULL
1972  * @page: (allow-none): location to store page increment, or %NULL
1973  *
1974  * Gets the current step and page the increments used by @spin_button. See
1975  * gtk_spin_button_set_increments().
1976  **/
1977 void
1978 gtk_spin_button_get_increments (GtkSpinButton *spin_button,
1979                                 gdouble       *step,
1980                                 gdouble       *page)
1981 {
1982   GtkSpinButtonPrivate *priv;
1983
1984   g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
1985
1986   priv = spin_button->priv;
1987
1988   if (step)
1989     *step = priv->adjustment->step_increment;
1990   if (page)
1991     *page = priv->adjustment->page_increment;
1992 }
1993
1994 /**
1995  * gtk_spin_button_set_range:
1996  * @spin_button: a #GtkSpinButton
1997  * @min: minimum allowable value
1998  * @max: maximum allowable value
1999  *
2000  * Sets the minimum and maximum allowable values for @spin_button
2001  **/
2002 void
2003 gtk_spin_button_set_range (GtkSpinButton *spin_button,
2004                            gdouble        min,
2005                            gdouble        max)
2006 {
2007   GtkSpinButtonPrivate *priv;
2008   gdouble value;
2009
2010   g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
2011
2012   priv = spin_button->priv;
2013
2014   priv->adjustment->lower = min;
2015   priv->adjustment->upper = max;
2016
2017   value = CLAMP (priv->adjustment->value,
2018                  priv->adjustment->lower,
2019                  (priv->adjustment->upper - priv->adjustment->page_size));
2020
2021   if (value != priv->adjustment->value)
2022     gtk_spin_button_set_value (spin_button, value);
2023
2024   gtk_adjustment_changed (priv->adjustment);
2025 }
2026
2027 /**
2028  * gtk_spin_button_get_range:
2029  * @spin_button: a #GtkSpinButton
2030  * @min: (allow-none): location to store minimum allowed value, or %NULL
2031  * @max: (allow-none): location to store maximum allowed value, or %NULL
2032  *
2033  * Gets the range allowed for @spin_button. See
2034  * gtk_spin_button_set_range().
2035  **/
2036 void
2037 gtk_spin_button_get_range (GtkSpinButton *spin_button,
2038                            gdouble       *min,
2039                            gdouble       *max)
2040 {
2041   GtkSpinButtonPrivate *priv;
2042
2043   g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
2044
2045   priv = spin_button->priv;
2046
2047   if (min)
2048     *min = priv->adjustment->lower;
2049   if (max)
2050     *max = priv->adjustment->upper;
2051 }
2052
2053 /**
2054  * gtk_spin_button_get_value:
2055  * @spin_button: a #GtkSpinButton
2056  *
2057  * Get the value in the @spin_button.
2058  *
2059  * Return value: the value of @spin_button
2060  **/
2061 gdouble
2062 gtk_spin_button_get_value (GtkSpinButton *spin_button)
2063 {
2064   g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spin_button), 0.0);
2065
2066   return spin_button->priv->adjustment->value;
2067 }
2068
2069 /**
2070  * gtk_spin_button_get_value_as_int:
2071  * @spin_button: a #GtkSpinButton
2072  *
2073  * Get the value @spin_button represented as an integer.
2074  *
2075  * Return value: the value of @spin_button
2076  **/
2077 gint
2078 gtk_spin_button_get_value_as_int (GtkSpinButton *spin_button)
2079 {
2080   GtkSpinButtonPrivate *priv;
2081   gdouble val;
2082
2083   g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spin_button), 0);
2084
2085   priv = spin_button->priv;
2086
2087   val = priv->adjustment->value;
2088   if (val - floor (val) < ceil (val) - val)
2089     return floor (val);
2090   else
2091     return ceil (val);
2092 }
2093
2094 /**
2095  * gtk_spin_button_set_value:
2096  * @spin_button: a #GtkSpinButton
2097  * @value: the new value
2098  *
2099  * Set the value of @spin_button.
2100  **/
2101 void
2102 gtk_spin_button_set_value (GtkSpinButton *spin_button,
2103                            gdouble        value)
2104 {
2105   GtkSpinButtonPrivate *priv;
2106
2107   g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
2108
2109   priv = spin_button->priv;
2110
2111   if (fabs (value - priv->adjustment->value) > EPSILON)
2112     gtk_adjustment_set_value (priv->adjustment, value);
2113   else
2114     {
2115       gint return_val = FALSE;
2116       g_signal_emit (spin_button, spinbutton_signals[OUTPUT], 0, &return_val);
2117       if (return_val == FALSE)
2118         gtk_spin_button_default_output (spin_button);
2119     }
2120 }
2121
2122 /**
2123  * gtk_spin_button_set_update_policy:
2124  * @spin_button: a #GtkSpinButton
2125  * @policy: a #GtkSpinButtonUpdatePolicy value
2126  *
2127  * Sets the update behavior of a spin button. This determines whether the
2128  * spin button is always updated or only when a valid value is set.
2129  **/
2130 void
2131 gtk_spin_button_set_update_policy (GtkSpinButton             *spin_button,
2132                                    GtkSpinButtonUpdatePolicy  policy)
2133 {
2134   GtkSpinButtonPrivate *priv;
2135
2136   g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
2137
2138   priv = spin_button->priv;
2139
2140   if (priv->update_policy != policy)
2141     {
2142       priv->update_policy = policy;
2143       g_object_notify (G_OBJECT (spin_button), "update-policy");
2144     }
2145 }
2146
2147 /**
2148  * gtk_spin_button_get_update_policy:
2149  * @spin_button: a #GtkSpinButton
2150  *
2151  * Gets the update behavior of a spin button. See
2152  * gtk_spin_button_set_update_policy().
2153  *
2154  * Return value: the current update policy
2155  **/
2156 GtkSpinButtonUpdatePolicy
2157 gtk_spin_button_get_update_policy (GtkSpinButton *spin_button)
2158 {
2159   g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spin_button), GTK_UPDATE_ALWAYS);
2160
2161   return spin_button->priv->update_policy;
2162 }
2163
2164 /**
2165  * gtk_spin_button_set_numeric:
2166  * @spin_button: a #GtkSpinButton
2167  * @numeric: flag indicating if only numeric entry is allowed.
2168  *
2169  * Sets the flag that determines if non-numeric text can be typed into
2170  * the spin button.
2171  **/
2172 void
2173 gtk_spin_button_set_numeric (GtkSpinButton  *spin_button,
2174                              gboolean        numeric)
2175 {
2176   GtkSpinButtonPrivate *priv;
2177
2178   g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
2179
2180   priv = spin_button->priv;
2181
2182   numeric = numeric != FALSE;
2183
2184   if (priv->numeric != numeric)
2185     {
2186        priv->numeric = numeric;
2187        g_object_notify (G_OBJECT (spin_button), "numeric");
2188     }
2189 }
2190
2191 /**
2192  * gtk_spin_button_get_numeric:
2193  * @spin_button: a #GtkSpinButton
2194  *
2195  * Returns whether non-numeric text can be typed into the spin button.
2196  * See gtk_spin_button_set_numeric().
2197  *
2198  * Return value: %TRUE if only numeric text can be entered
2199  **/
2200 gboolean
2201 gtk_spin_button_get_numeric (GtkSpinButton *spin_button)
2202 {
2203   g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spin_button), FALSE);
2204
2205   return spin_button->priv->numeric;
2206 }
2207
2208 /**
2209  * gtk_spin_button_set_wrap:
2210  * @spin_button: a #GtkSpinButton
2211  * @wrap: a flag indicating if wrapping behavior is performed.
2212  *
2213  * Sets the flag that determines if a spin button value wraps around to the
2214  * opposite limit when the upper or lower limit of the range is exceeded.
2215  **/
2216 void
2217 gtk_spin_button_set_wrap (GtkSpinButton  *spin_button,
2218                           gboolean        wrap)
2219 {
2220   GtkSpinButtonPrivate *priv;
2221
2222   g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
2223
2224   priv = spin_button->priv;
2225
2226   wrap = wrap != FALSE;
2227
2228   if (priv->wrap != wrap)
2229     {
2230        priv->wrap = (wrap != 0);
2231
2232        g_object_notify (G_OBJECT (spin_button), "wrap");
2233     }
2234 }
2235
2236 /**
2237  * gtk_spin_button_get_wrap:
2238  * @spin_button: a #GtkSpinButton
2239  *
2240  * Returns whether the spin button's value wraps around to the
2241  * opposite limit when the upper or lower limit of the range is
2242  * exceeded. See gtk_spin_button_set_wrap().
2243  *
2244  * Return value: %TRUE if the spin button wraps around
2245  **/
2246 gboolean
2247 gtk_spin_button_get_wrap (GtkSpinButton *spin_button)
2248 {
2249   g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spin_button), FALSE);
2250
2251   return spin_button->priv->wrap;
2252 }
2253
2254 static gint
2255 spin_button_get_arrow_size (GtkSpinButton *spin_button)
2256 {
2257   GtkStyle *style;
2258   gint size;
2259   gint arrow_size;
2260
2261   style = gtk_widget_get_style (GTK_WIDGET (spin_button));
2262   size = pango_font_description_get_size (style->font_desc);
2263   arrow_size = MAX (PANGO_PIXELS (size), MIN_ARROW_WIDTH);
2264
2265   return arrow_size - arrow_size % 2; /* force even */
2266 }
2267
2268 /**
2269  * spin_button_get_shadow_type:
2270  * @spin_button: a #GtkSpinButton
2271  *
2272  * Convenience function to Get the shadow type from the underlying widget's
2273  * style.
2274  *
2275  * Return value: the #GtkShadowType
2276  **/
2277 static gint
2278 spin_button_get_shadow_type (GtkSpinButton *spin_button)
2279 {
2280   GtkShadowType rc_shadow_type;
2281
2282   gtk_widget_style_get (GTK_WIDGET (spin_button), "shadow-type", &rc_shadow_type, NULL);
2283
2284   return rc_shadow_type;
2285 }
2286
2287 /**
2288  * gtk_spin_button_set_snap_to_ticks:
2289  * @spin_button: a #GtkSpinButton
2290  * @snap_to_ticks: a flag indicating if invalid values should be corrected.
2291  *
2292  * Sets the policy as to whether values are corrected to the nearest step
2293  * increment when a spin button is activated after providing an invalid value.
2294  **/
2295 void
2296 gtk_spin_button_set_snap_to_ticks (GtkSpinButton *spin_button,
2297                                    gboolean       snap_to_ticks)
2298 {
2299   GtkSpinButtonPrivate *priv;
2300   guint new_val;
2301
2302   g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
2303
2304   priv = spin_button->priv;
2305
2306   new_val = (snap_to_ticks != 0);
2307
2308   if (new_val != priv->snap_to_ticks)
2309     {
2310       priv->snap_to_ticks = new_val;
2311       if (new_val && GTK_ENTRY (spin_button)->editable)
2312         gtk_spin_button_update (spin_button);
2313
2314       g_object_notify (G_OBJECT (spin_button), "snap-to-ticks");
2315     }
2316 }
2317
2318 /**
2319  * gtk_spin_button_get_snap_to_ticks:
2320  * @spin_button: a #GtkSpinButton
2321  *
2322  * Returns whether the values are corrected to the nearest step. See
2323  * gtk_spin_button_set_snap_to_ticks().
2324  *
2325  * Return value: %TRUE if values are snapped to the nearest step.
2326  **/
2327 gboolean
2328 gtk_spin_button_get_snap_to_ticks (GtkSpinButton *spin_button)
2329 {
2330   g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spin_button), FALSE);
2331
2332   return spin_button->priv->snap_to_ticks;
2333 }
2334
2335 /**
2336  * gtk_spin_button_spin:
2337  * @spin_button: a #GtkSpinButton
2338  * @direction: a #GtkSpinType indicating the direction to spin.
2339  * @increment: step increment to apply in the specified direction.
2340  *
2341  * Increment or decrement a spin button's value in a specified direction
2342  * by a specified amount.
2343  **/
2344 void
2345 gtk_spin_button_spin (GtkSpinButton *spin_button,
2346                       GtkSpinType    direction,
2347                       gdouble        increment)
2348 {
2349   GtkSpinButtonPrivate *priv;
2350   GtkAdjustment *adj;
2351   gdouble diff;
2352
2353   g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
2354
2355   priv = spin_button->priv;
2356
2357   adj = priv->adjustment;
2358
2359   /* for compatibility with the 1.0.x version of this function */
2360   if (increment != 0 && increment != adj->step_increment &&
2361       (direction == GTK_SPIN_STEP_FORWARD ||
2362        direction == GTK_SPIN_STEP_BACKWARD))
2363     {
2364       if (direction == GTK_SPIN_STEP_BACKWARD && increment > 0)
2365         increment = -increment;
2366       direction = GTK_SPIN_USER_DEFINED;
2367     }
2368
2369   switch (direction)
2370     {
2371     case GTK_SPIN_STEP_FORWARD:
2372
2373       gtk_spin_button_real_spin (spin_button, adj->step_increment);
2374       break;
2375
2376     case GTK_SPIN_STEP_BACKWARD:
2377
2378       gtk_spin_button_real_spin (spin_button, -adj->step_increment);
2379       break;
2380
2381     case GTK_SPIN_PAGE_FORWARD:
2382
2383       gtk_spin_button_real_spin (spin_button, adj->page_increment);
2384       break;
2385
2386     case GTK_SPIN_PAGE_BACKWARD:
2387
2388       gtk_spin_button_real_spin (spin_button, -adj->page_increment);
2389       break;
2390
2391     case GTK_SPIN_HOME:
2392
2393       diff = adj->value - adj->lower;
2394       if (diff > EPSILON)
2395         gtk_spin_button_real_spin (spin_button, -diff);
2396       break;
2397
2398     case GTK_SPIN_END:
2399
2400       diff = adj->upper - adj->value;
2401       if (diff > EPSILON)
2402         gtk_spin_button_real_spin (spin_button, diff);
2403       break;
2404
2405     case GTK_SPIN_USER_DEFINED:
2406
2407       if (increment != 0)
2408         gtk_spin_button_real_spin (spin_button, increment);
2409       break;
2410
2411     default:
2412       break;
2413     }
2414 }
2415
2416 /**
2417  * gtk_spin_button_update:
2418  * @spin_button: a #GtkSpinButton
2419  *
2420  * Manually force an update of the spin button.
2421  **/
2422 void
2423 gtk_spin_button_update (GtkSpinButton *spin_button)
2424 {
2425   GtkSpinButtonPrivate *priv;
2426   gdouble val;
2427   gint error = 0;
2428   gint return_val;
2429
2430   g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
2431
2432   priv = spin_button->priv;
2433
2434   return_val = FALSE;
2435   g_signal_emit (spin_button, spinbutton_signals[INPUT], 0, &val, &return_val);
2436   if (return_val == FALSE)
2437     {
2438       return_val = gtk_spin_button_default_input (spin_button, &val);
2439       error = (return_val == GTK_INPUT_ERROR);
2440     }
2441   else if (return_val == GTK_INPUT_ERROR)
2442     error = 1;
2443
2444   gtk_widget_queue_draw (GTK_WIDGET (spin_button));
2445
2446   if (priv->update_policy == GTK_UPDATE_ALWAYS)
2447     {
2448       if (val < priv->adjustment->lower)
2449         val = priv->adjustment->lower;
2450       else if (val > priv->adjustment->upper)
2451         val = priv->adjustment->upper;
2452     }
2453   else if ((priv->update_policy == GTK_UPDATE_IF_VALID) &&
2454            (error ||
2455            val < priv->adjustment->lower ||
2456            val > priv->adjustment->upper))
2457     {
2458       gtk_spin_button_value_changed (priv->adjustment, spin_button);
2459       return;
2460     }
2461
2462   if (priv->snap_to_ticks)
2463     gtk_spin_button_snap (spin_button, val);
2464   else
2465     gtk_spin_button_set_value (spin_button, val);
2466 }
2467
2468 GdkWindow *
2469 _gtk_spin_button_get_panel (GtkSpinButton *spin_button)
2470 {
2471   return spin_button->priv->panel;
2472 }