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

   1 /* GTK - The GIMP Toolkit
   2  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
   3  * Copyright (C) 2001 Red Hat, Inc.
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the
  17  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18  * Boston, MA 02111-1307, USA.
  19  */
  20
  21 /*
  22  * Modified by the GTK+ Team and others 1997-2004.  See the AUTHORS
  23  * file for a list of people on the GTK+ Team.  See the ChangeLog
  24  * files for a list of changes.  These files are distributed with
  25  * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  26  */
  27
  28 #include "config.h"
  29
  30 #include <stdio.h>
  31 #include <math.h>
  32
  33 #include <gdk/gdkkeysyms.h>
  34 #include "gtkmain.h"
  35 #include "gtkmarshalers.h"
  36 #include "gtkorientable.h"
  37 #include "gtkrange.h"
  38 #include "gtkscale.h"
  39 #include "gtkscrollbar.h"
  40 #include "gtkwindow.h"
  41 #include "gtkprivate.h"
  42 #include "gtkintl.h"
  43
  44 /**
  45  * SECTION:gtkrange
  46  * @Short_description: Base class for widgets which visualize an adjustment
  47  * @Title: GtkRange
  48  *
  49  * #GtkRange is the common base class for widgets which visualize an
  50  * adjustment, e.g #GtkScale or #GtkScrollbar.
  51  *
  52  * Apart from signals for monitoring the parameters of the adjustment,
  53  * #GtkRange provides properties and methods for influencing the sensitivity
  54  * of the "steppers". It also provides properties and methods for setting a
  55  * "fill level" on range widgets. See gtk_range_set_fill_level().
  56  */
  57
  58
  59 #define SCROLL_DELAY_FACTOR 5    /* Scroll repeat multiplier */
  60 #define UPDATE_DELAY        300  /* Delay for queued update */
  61
  62 typedef struct _GtkRangeStepTimer GtkRangeStepTimer;
  63
  64 typedef enum {
  65   MOUSE_OUTSIDE,
  66   MOUSE_STEPPER_A,
  67   MOUSE_STEPPER_B,
  68   MOUSE_STEPPER_C,
  69   MOUSE_STEPPER_D,
  70   MOUSE_TROUGH,
  71   MOUSE_SLIDER,
  72   MOUSE_WIDGET /* inside widget but not in any of the above GUI elements */
  73 } MouseLocation;
  74
  75 struct _GtkRangePrivate
  76 {
  77   MouseLocation      mouse_location;
  78   /* last mouse coords we got, or -1 if mouse is outside the range */
  79   gint  mouse_x;
  80   gint  mouse_y;
  81   MouseLocation      grab_location;   /* "grabbed" mouse location, OUTSIDE for no grab */
  82   guint              grab_button : 8; /* 0 if none */
  83
  84   GtkRangeStepTimer *timer;
  85
  86   GtkAdjustment     *adjustment;
  87   GtkOrientation     orientation;
  88   GtkSensitivityType lower_sensitivity;
  89   GtkSensitivityType upper_sensitivity;
  90   GtkUpdateType      update_policy;
  91
  92   GdkDevice         *grab_device;
  93   GdkRectangle       range_rect;     /* Area of entire stepper + trough assembly in widget->window coords */
  94   /* These are in widget->window coordinates */
  95   GdkRectangle       stepper_a;
  96   GdkRectangle       stepper_b;
  97   GdkRectangle       stepper_c;
  98   GdkRectangle       stepper_d;
  99   GdkRectangle       trough;         /* The trough rectangle is the area the thumb can slide in, not the entire range_rect */
 100   GdkRectangle       slider;
 101   GdkWindow         *event_window;
 102
 103   GQuark             slider_detail_quark;
 104   GQuark             stepper_detail_quark[4];
 105
 106   gboolean recalc_marks;
 107
 108   gdouble  fill_level;
 109   gdouble *marks;
 110
 111   gint *mark_pos;
 112   gint  min_slider_size;
 113   gint  n_marks;
 114   gint  round_digits;                /* Round off value to this many digits, -1 for no rounding */
 115   gint  slide_initial_slider_position;
 116   gint  slide_initial_coordinate;
 117   gint  slider_start;                /* Slider range along the long dimension, in widget->window coords */
 118   gint  slider_end;
 119
 120   guint repaint_id;
 121   guint update_timeout_id;
 122
 123   /* Steppers are: < > ---- < >
 124    *               a b      c d
 125    */
 126   guint has_stepper_a          : 1;
 127   guint has_stepper_b          : 1;
 128   guint has_stepper_c          : 1;
 129   guint has_stepper_d          : 1;
 130
 131   guint flippable              : 1;
 132   guint inverted               : 1;
 133   guint need_recalc            : 1;
 134   guint slider_size_fixed      : 1;
 135   guint trough_click_forward   : 1;  /* trough click was on the forward side of slider */
 136   guint update_pending         : 1;  /* need to emit value_changed */
 137
 138   /* Stepper sensitivity */
 139   guint lower_sensitive        : 1;
 140   guint upper_sensitive        : 1;
 141
 142   /* Fill level */
 143   guint show_fill_level        : 1;
 144   guint restrict_to_fill_level : 1;
 145 };
 146
 147
 148 enum {
 149   PROP_0,
 150   PROP_ORIENTATION,
 151   PROP_UPDATE_POLICY,
 152   PROP_ADJUSTMENT,
 153   PROP_INVERTED,
 154   PROP_LOWER_STEPPER_SENSITIVITY,
 155   PROP_UPPER_STEPPER_SENSITIVITY,
 156   PROP_SHOW_FILL_LEVEL,
 157   PROP_RESTRICT_TO_FILL_LEVEL,
 158   PROP_FILL_LEVEL
 159 };
 160
 161 enum {
 162   VALUE_CHANGED,
 163   ADJUST_BOUNDS,
 164   MOVE_SLIDER,
 165   CHANGE_VALUE,
 166   LAST_SIGNAL
 167 };
 168
 169 typedef enum {
 170   STEPPER_A,
 171   STEPPER_B,
 172   STEPPER_C,
 173   STEPPER_D
 174 } Stepper;
 175
 176 static void gtk_range_set_property   (GObject          *object,
 177                                       guint             prop_id,
 178                                       const GValue     *value,
 179                                       GParamSpec       *pspec);
 180 static void gtk_range_get_property   (GObject          *object,
 181                                       guint             prop_id,
 182                                       GValue           *value,
 183                                       GParamSpec       *pspec);
 184 static void gtk_range_destroy        (GtkWidget        *widget);
 185 static void gtk_range_get_preferred_width
 186                                      (GtkWidget        *widget,
 187                                       gint             *minimum,
 188                                       gint             *natural);
 189 static void gtk_range_get_preferred_height
 190                                      (GtkWidget        *widget,
 191                                       gint             *minimum,
 192                                       gint             *natural);
 193 static void gtk_range_size_allocate  (GtkWidget        *widget,
 194                                       GtkAllocation    *allocation);
 195 static void gtk_range_hierarchy_changed (GtkWidget     *widget,
 196                                          GtkWidget     *previous_toplevel);
 197 static void gtk_range_realize        (GtkWidget        *widget);
 198 static void gtk_range_unrealize      (GtkWidget        *widget);
 199 static void gtk_range_map            (GtkWidget        *widget);
 200 static void gtk_range_unmap          (GtkWidget        *widget);
 201 static gboolean gtk_range_draw       (GtkWidget        *widget,
 202                                       cairo_t          *cr);
 203 static gboolean gtk_range_button_press   (GtkWidget        *widget,
 204                                       GdkEventButton   *event);
 205 static gboolean gtk_range_button_release (GtkWidget        *widget,
 206                                       GdkEventButton   *event);
 207 static gboolean gtk_range_motion_notify  (GtkWidget        *widget,
 208                                       GdkEventMotion   *event);
 209 static gboolean gtk_range_enter_notify   (GtkWidget        *widget,
 210                                       GdkEventCrossing *event);
 211 static gboolean gtk_range_leave_notify   (GtkWidget        *widget,
 212                                       GdkEventCrossing *event);
 213 static gboolean gtk_range_grab_broken (GtkWidget          *widget,
 214                                        GdkEventGrabBroken *event);
 215 static void gtk_range_grab_notify    (GtkWidget          *widget,
 216                                       gboolean            was_grabbed);
 217 static void gtk_range_state_changed  (GtkWidget          *widget,
 218                                       GtkStateType        previous_state);
 219 static gboolean gtk_range_scroll_event   (GtkWidget        *widget,
 220                                       GdkEventScroll   *event);
 221 static void gtk_range_style_set      (GtkWidget        *widget,
 222                                       GtkStyle         *previous_style);
 223 static void update_slider_position   (GtkRange         *range,
 224                                       gint              mouse_x,
 225                                       gint              mouse_y);
 226 static void stop_scrolling           (GtkRange         *range);
 227 static gboolean modify_allocation_for_window_grip (GtkWidget     *widget,
 228                                                    GtkAllocation *allocation);
 229
 230 /* Range methods */
 231
 232 static void gtk_range_move_slider              (GtkRange         *range,
 233                                                 GtkScrollType     scroll);
 234
 235 /* Internals */
 236 static gboolean      gtk_range_scroll                   (GtkRange      *range,
 237                                                          GtkScrollType  scroll);
 238 static gboolean      gtk_range_update_mouse_location    (GtkRange      *range);
 239 static void          gtk_range_calc_layout              (GtkRange      *range,
 240                                                          gdouble        adjustment_value);
 241 static void          gtk_range_calc_marks               (GtkRange      *range);
 242 static void          gtk_range_get_props                (GtkRange      *range,
 243                                                          gint          *slider_width,
 244                                                          gint          *stepper_size,
 245                                                          gint          *focus_width,
 246                                                          gint          *trough_border,
 247                                                          gint          *stepper_spacing,
 248                                                          gboolean      *trough_under_steppers,
 249                                                          gint          *arrow_displacement_x,
 250                                                          gint          *arrow_displacement_y);
 251 static void          gtk_range_calc_request             (GtkRange      *range,
 252                                                          gint           slider_width,
 253                                                          gint           stepper_size,
 254                                                          gint           focus_width,
 255                                                          gint           trough_border,
 256                                                          gint           stepper_spacing,
 257                                                          GdkRectangle  *range_rect,
 258                                                          GtkBorder     *border,
 259                                                          gint          *n_steppers_p,
 260                                                          gboolean      *has_steppers_ab,
 261                                                          gboolean      *has_steppers_cd,
 262                                                          gint          *slider_length_p);
 263 static void          gtk_range_adjustment_value_changed (GtkAdjustment *adjustment,
 264                                                          gpointer       data);
 265 static void          gtk_range_adjustment_changed       (GtkAdjustment *adjustment,
 266                                                          gpointer       data);
 267 static void          gtk_range_add_step_timer           (GtkRange      *range,
 268                                                          GtkScrollType  step);
 269 static void          gtk_range_remove_step_timer        (GtkRange      *range);
 270 static void          gtk_range_reset_update_timer       (GtkRange      *range);
 271 static void          gtk_range_remove_update_timer      (GtkRange      *range);
 272 static GdkRectangle* get_area                           (GtkRange      *range,
 273                                                          MouseLocation  location);
 274 static gboolean      gtk_range_real_change_value        (GtkRange      *range,
 275                                                          GtkScrollType  scroll,
 276                                                          gdouble        value);
 277 static void          gtk_range_update_value             (GtkRange      *range);
 278 static gboolean      gtk_range_key_press                (GtkWidget     *range,
 279                                                          GdkEventKey   *event);
 280
 281
 282 G_DEFINE_ABSTRACT_TYPE_WITH_CODE (GtkRange, gtk_range, GTK_TYPE_WIDGET,
 283                                   G_IMPLEMENT_INTERFACE (GTK_TYPE_ORIENTABLE,
 284                                                          NULL))
 285
 286 static guint signals[LAST_SIGNAL];
 287
 288
 289 static void
 290 gtk_range_class_init (GtkRangeClass *class)
 291 {
 292   GObjectClass   *gobject_class;
 293   GtkWidgetClass *widget_class;
 294
 295   gobject_class = G_OBJECT_CLASS (class);
 296   widget_class = (GtkWidgetClass*) class;
 297
 298   gobject_class->set_property = gtk_range_set_property;
 299   gobject_class->get_property = gtk_range_get_property;
 300
 301   widget_class->destroy = gtk_range_destroy;
 302   widget_class->get_preferred_width = gtk_range_get_preferred_width;
 303   widget_class->get_preferred_height = gtk_range_get_preferred_height;
 304   widget_class->size_allocate = gtk_range_size_allocate;
 305   widget_class->hierarchy_changed = gtk_range_hierarchy_changed;
 306   widget_class->realize = gtk_range_realize;
 307   widget_class->unrealize = gtk_range_unrealize;
 308   widget_class->map = gtk_range_map;
 309   widget_class->unmap = gtk_range_unmap;
 310   widget_class->draw = gtk_range_draw;
 311   widget_class->button_press_event = gtk_range_button_press;
 312   widget_class->button_release_event = gtk_range_button_release;
 313   widget_class->motion_notify_event = gtk_range_motion_notify;
 314   widget_class->scroll_event = gtk_range_scroll_event;
 315   widget_class->enter_notify_event = gtk_range_enter_notify;
 316   widget_class->leave_notify_event = gtk_range_leave_notify;
 317   widget_class->grab_broken_event = gtk_range_grab_broken;
 318   widget_class->grab_notify = gtk_range_grab_notify;
 319   widget_class->state_changed = gtk_range_state_changed;
 320   widget_class->style_set = gtk_range_style_set;
 321   widget_class->key_press_event = gtk_range_key_press;
 322
 323   class->move_slider = gtk_range_move_slider;
 324   class->change_value = gtk_range_real_change_value;
 325
 326   class->slider_detail = "slider";
 327   class->stepper_detail = "stepper";
 328
 329   /**
 330    * GtkRange::value-changed:
 331    * @range: the #GtkRange that received the signal
 332    *
 333    * Emitted when the range value changes.
 334    */
 335   signals[VALUE_CHANGED] =
 336     g_signal_new (I_("value-changed"),
 337                   G_TYPE_FROM_CLASS (gobject_class),
 338                   G_SIGNAL_RUN_LAST,
 339                   G_STRUCT_OFFSET (GtkRangeClass, value_changed),
 340                   NULL, NULL,
 341                   _gtk_marshal_VOID__VOID,
 342                   G_TYPE_NONE, 0);
 343
 344   /**
 345    * GtkRange::adjust-bounds:
 346    * @range: the #GtkRange that received the signal
 347    * @value: the value before we clamp
 348    *
 349    * Emitted before clamping a value, to give the application a
 350    * chance to adjust the bounds.
 351    */
 352   signals[ADJUST_BOUNDS] =
 353     g_signal_new (I_("adjust-bounds"),
 354                   G_TYPE_FROM_CLASS (gobject_class),
 355                   G_SIGNAL_RUN_LAST,
 356                   G_STRUCT_OFFSET (GtkRangeClass, adjust_bounds),
 357                   NULL, NULL,
 358                   _gtk_marshal_VOID__DOUBLE,
 359                   G_TYPE_NONE, 1,
 360                   G_TYPE_DOUBLE);
 361
 362   /**
 363    * GtkRange::move-slider:
 364    * @range: the #GtkRange that received the signal
 365    * @step: how to move the slider
 366    *
 367    * Virtual function that moves the slider. Used for keybindings.
 368    */
 369   signals[MOVE_SLIDER] =
 370     g_signal_new (I_("move-slider"),
 371                   G_TYPE_FROM_CLASS (gobject_class),
 372                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 373                   G_STRUCT_OFFSET (GtkRangeClass, move_slider),
 374                   NULL, NULL,
 375                   _gtk_marshal_VOID__ENUM,
 376                   G_TYPE_NONE, 1,
 377                   GTK_TYPE_SCROLL_TYPE);
 378
 379   /**
 380    * GtkRange::change-value:
 381    * @range: the #GtkRange that received the signal
 382    * @scroll: the type of scroll action that was performed
 383    * @value: the new value resulting from the scroll action
 384    * @returns: %TRUE to prevent other handlers from being invoked for the
 385    * signal, %FALSE to propagate the signal further
 386    *
 387    * The ::change-value signal is emitted when a scroll action is
 388    * performed on a range.  It allows an application to determine the
 389    * type of scroll event that occurred and the resultant new value.
 390    * The application can handle the event itself and return %TRUE to
 391    * prevent further processing.  Or, by returning %FALSE, it can pass
 392    * the event to other handlers until the default GTK+ handler is
 393    * reached.
 394    *
 395    * The value parameter is unrounded.  An application that overrides
 396    * the ::change-value signal is responsible for clamping the value to
 397    * the desired number of decimal digits; the default GTK+ handler
 398    * clamps the value based on @range->round_digits.
 399    *
 400    * It is not possible to use delayed update policies in an overridden
 401    * ::change-value handler.
 402    *
 403    * Since: 2.6
 404    */
 405   signals[CHANGE_VALUE] =
 406     g_signal_new (I_("change-value"),
 407                   G_TYPE_FROM_CLASS (gobject_class),
 408                   G_SIGNAL_RUN_LAST,
 409                   G_STRUCT_OFFSET (GtkRangeClass, change_value),
 410                   _gtk_boolean_handled_accumulator, NULL,
 411                   _gtk_marshal_BOOLEAN__ENUM_DOUBLE,
 412                   G_TYPE_BOOLEAN, 2,
 413                   GTK_TYPE_SCROLL_TYPE,
 414                   G_TYPE_DOUBLE);
 415
 416   g_object_class_override_property (gobject_class,
 417                                     PROP_ORIENTATION,
 418                                     "orientation");
 419
 420   g_object_class_install_property (gobject_class,
 421                                    PROP_UPDATE_POLICY,
 422                                    g_param_spec_enum ("update-policy",
 423                                                       P_("Update policy"),
 424                                                       P_("How the range should be updated on the screen"),
 425                                                       GTK_TYPE_UPDATE_TYPE,
 426                                                       GTK_UPDATE_CONTINUOUS,
 427                                                       GTK_PARAM_READWRITE));
 428
 429   g_object_class_install_property (gobject_class,
 430                                    PROP_ADJUSTMENT,
 431                                    g_param_spec_object ("adjustment",
 432                                                         P_("Adjustment"),
 433                                                         P_("The GtkAdjustment that contains the current value of this range object"),
 434                                                         GTK_TYPE_ADJUSTMENT,
 435                                                         GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT));
 436
 437   g_object_class_install_property (gobject_class,
 438                                    PROP_INVERTED,
 439                                    g_param_spec_boolean ("inverted",
 440                                                         P_("Inverted"),
 441                                                         P_("Invert direction slider moves to increase range value"),
 442                                                          FALSE,
 443                                                          GTK_PARAM_READWRITE));
 444
 445   g_object_class_install_property (gobject_class,
 446                                    PROP_LOWER_STEPPER_SENSITIVITY,
 447                                    g_param_spec_enum ("lower-stepper-sensitivity",
 448                                                       P_("Lower stepper sensitivity"),
 449                                                       P_("The sensitivity policy for the stepper that points to the adjustment's lower side"),
 450                                                       GTK_TYPE_SENSITIVITY_TYPE,
 451                                                       GTK_SENSITIVITY_AUTO,
 452                                                       GTK_PARAM_READWRITE));
 453
 454   g_object_class_install_property (gobject_class,
 455                                    PROP_UPPER_STEPPER_SENSITIVITY,
 456                                    g_param_spec_enum ("upper-stepper-sensitivity",
 457                                                       P_("Upper stepper sensitivity"),
 458                                                       P_("The sensitivity policy for the stepper that points to the adjustment's upper side"),
 459                                                       GTK_TYPE_SENSITIVITY_TYPE,
 460                                                       GTK_SENSITIVITY_AUTO,
 461                                                       GTK_PARAM_READWRITE));
 462
 463   /**
 464    * GtkRange:show-fill-level:
 465    *
 466    * The show-fill-level property controls whether fill level indicator
 467    * graphics are displayed on the trough. See
 468    * gtk_range_set_show_fill_level().
 469    *
 470    * Since: 2.12
 471    **/
 472   g_object_class_install_property (gobject_class,
 473                                    PROP_SHOW_FILL_LEVEL,
 474                                    g_param_spec_boolean ("show-fill-level",
 475                                                          P_("Show Fill Level"),
 476                                                          P_("Whether to display a fill level indicator graphics on trough."),
 477                                                          FALSE,
 478                                                          GTK_PARAM_READWRITE));
 479
 480   /**
 481    * GtkRange:restrict-to-fill-level:
 482    *
 483    * The restrict-to-fill-level property controls whether slider
 484    * movement is restricted to an upper boundary set by the
 485    * fill level. See gtk_range_set_restrict_to_fill_level().
 486    *
 487    * Since: 2.12
 488    **/
 489   g_object_class_install_property (gobject_class,
 490                                    PROP_RESTRICT_TO_FILL_LEVEL,
 491                                    g_param_spec_boolean ("restrict-to-fill-level",
 492                                                          P_("Restrict to Fill Level"),
 493                                                          P_("Whether to restrict the upper boundary to the fill level."),
 494                                                          TRUE,
 495                                                          GTK_PARAM_READWRITE));
 496
 497   /**
 498    * GtkRange:fill-level:
 499    *
 500    * The fill level (e.g. prebuffering of a network stream).
 501    * See gtk_range_set_fill_level().
 502    *
 503    * Since: 2.12
 504    **/
 505   g_object_class_install_property (gobject_class,
 506                                    PROP_FILL_LEVEL,
 507                                    g_param_spec_double ("fill-level",
 508                                                         P_("Fill Level"),
 509                                                         P_("The fill level."),
 510                                                         -G_MAXDOUBLE,
 511                                                         G_MAXDOUBLE,
 512                                                         G_MAXDOUBLE,
 513                                                         GTK_PARAM_READWRITE));
 514
 515   gtk_widget_class_install_style_property (widget_class,
 516                                            g_param_spec_int ("slider-width",
 517                                                              P_("Slider Width"),
 518                                                              P_("Width of scrollbar or scale thumb"),
 519                                                              0,
 520                                                              G_MAXINT,
 521                                                              14,
 522                                                              GTK_PARAM_READABLE));
 523   gtk_widget_class_install_style_property (widget_class,
 524                                            g_param_spec_int ("trough-border",
 525                                                              P_("Trough Border"),
 526                                                              P_("Spacing between thumb/steppers and outer trough bevel"),
 527                                                              0,
 528                                                              G_MAXINT,
 529                                                              1,
 530                                                              GTK_PARAM_READABLE));
 531   gtk_widget_class_install_style_property (widget_class,
 532                                            g_param_spec_int ("stepper-size",
 533                                                              P_("Stepper Size"),
 534                                                              P_("Length of step buttons at ends"),
 535                                                              0,
 536                                                              G_MAXINT,
 537                                                              14,
 538                                                              GTK_PARAM_READABLE));
 539   /**
 540    * GtkRange:stepper-spacing:
 541    *
 542    * The spacing between the stepper buttons and thumb. Note that
 543    * setting this value to anything > 0 will automatically set the
 544    * trough-under-steppers style property to %TRUE as well. Also,
 545    * stepper-spacing won't have any effect if there are no steppers.
 546    */
 547   gtk_widget_class_install_style_property (widget_class,
 548                                            g_param_spec_int ("stepper-spacing",
 549                                                              P_("Stepper Spacing"),
 550                                                              P_("Spacing between step buttons and thumb"),
 551                                                              0,
 552                                                              G_MAXINT,
 553                                                              0,
 554                                                              GTK_PARAM_READABLE));
 555   gtk_widget_class_install_style_property (widget_class,
 556                                            g_param_spec_int ("arrow-displacement-x",
 557                                                              P_("Arrow X Displacement"),
 558                                                              P_("How far in the x direction to move the arrow when the button is depressed"),
 559                                                              G_MININT,
 560                                                              G_MAXINT,
 561                                                              0,
 562                                                              GTK_PARAM_READABLE));
 563   gtk_widget_class_install_style_property (widget_class,
 564                                            g_param_spec_int ("arrow-displacement-y",
 565                                                              P_("Arrow Y Displacement"),
 566                                                              P_("How far in the y direction to move the arrow when the button is depressed"),
 567                                                              G_MININT,
 568                                                              G_MAXINT,
 569                                                              0,
 570                                                              GTK_PARAM_READABLE));
 571
 572   /**
 573    * GtkRange:trough-under-steppers:
 574    *
 575    * Whether to draw the trough across the full length of the range or
 576    * to exclude the steppers and their spacing. Note that setting the
 577    * #GtkRange:stepper-spacing style property to any value > 0 will
 578    * automatically enable trough-under-steppers too.
 579    *
 580    * Since: 2.10
 581    */
 582   gtk_widget_class_install_style_property (widget_class,
 583                                            g_param_spec_boolean ("trough-under-steppers",
 584                                                                  P_("Trough Under Steppers"),
 585                                                                  P_("Whether to draw trough for full length of range or exclude the steppers and spacing"),
 586                                                                  TRUE,
 587                                                                  GTK_PARAM_READABLE));
 588
 589   /**
 590    * GtkRange:arrow-scaling:
 591    *
 592    * The arrow size proportion relative to the scroll button size.
 593    *
 594    * Since: 2.14
 595    */
 596   gtk_widget_class_install_style_property (widget_class,
 597                                            g_param_spec_float ("arrow-scaling",
 598                                                                P_("Arrow scaling"),
 599                                                                P_("Arrow scaling with regard to scroll button size"),
 600                                                                0.0, 1.0, 0.5,
 601                                                                GTK_PARAM_READABLE));
 602
 603   g_type_class_add_private (class, sizeof (GtkRangePrivate));
 604 }
 605
 606 static void
 607 gtk_range_set_property (GObject      *object,
 608                         guint         prop_id,
 609                         const GValue *value,
 610                         GParamSpec   *pspec)
 611 {
 612   GtkRange *range = GTK_RANGE (object);
 613   GtkRangePrivate *priv = range->priv;
 614
 615   switch (prop_id)
 616     {
 617     case PROP_ORIENTATION:
 618       priv->orientation = g_value_get_enum (value);
 619
 620       priv->slider_detail_quark = 0;
 621       priv->stepper_detail_quark[0] = 0;
 622       priv->stepper_detail_quark[1] = 0;
 623       priv->stepper_detail_quark[2] = 0;
 624       priv->stepper_detail_quark[3] = 0;
 625
 626       gtk_widget_queue_resize (GTK_WIDGET (range));
 627       break;
 628     case PROP_UPDATE_POLICY:
 629       gtk_range_set_update_policy (range, g_value_get_enum (value));
 630       break;
 631     case PROP_ADJUSTMENT:
 632       gtk_range_set_adjustment (range, g_value_get_object (value));
 633       break;
 634     case PROP_INVERTED:
 635       gtk_range_set_inverted (range, g_value_get_boolean (value));
 636       break;
 637     case PROP_LOWER_STEPPER_SENSITIVITY:
 638       gtk_range_set_lower_stepper_sensitivity (range, g_value_get_enum (value));
 639       break;
 640     case PROP_UPPER_STEPPER_SENSITIVITY:
 641       gtk_range_set_upper_stepper_sensitivity (range, g_value_get_enum (value));
 642       break;
 643     case PROP_SHOW_FILL_LEVEL:
 644       gtk_range_set_show_fill_level (range, g_value_get_boolean (value));
 645       break;
 646     case PROP_RESTRICT_TO_FILL_LEVEL:
 647       gtk_range_set_restrict_to_fill_level (range, g_value_get_boolean (value));
 648       break;
 649     case PROP_FILL_LEVEL:
 650       gtk_range_set_fill_level (range, g_value_get_double (value));
 651       break;
 652     default:
 653       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 654       break;
 655     }
 656 }
 657
 658 static void
 659 gtk_range_get_property (GObject      *object,
 660                         guint         prop_id,
 661                         GValue       *value,
 662                         GParamSpec   *pspec)
 663 {
 664   GtkRange *range = GTK_RANGE (object);
 665   GtkRangePrivate *priv = range->priv;
 666
 667   switch (prop_id)
 668     {
 669     case PROP_ORIENTATION:
 670       g_value_set_enum (value, priv->orientation);
 671       break;
 672     case PROP_UPDATE_POLICY:
 673       g_value_set_enum (value, priv->update_policy);
 674       break;
 675     case PROP_ADJUSTMENT:
 676       g_value_set_object (value, priv->adjustment);
 677       break;
 678     case PROP_INVERTED:
 679       g_value_set_boolean (value, priv->inverted);
 680       break;
 681     case PROP_LOWER_STEPPER_SENSITIVITY:
 682       g_value_set_enum (value, gtk_range_get_lower_stepper_sensitivity (range));
 683       break;
 684     case PROP_UPPER_STEPPER_SENSITIVITY:
 685       g_value_set_enum (value, gtk_range_get_upper_stepper_sensitivity (range));
 686       break;
 687     case PROP_SHOW_FILL_LEVEL:
 688       g_value_set_boolean (value, gtk_range_get_show_fill_level (range));
 689       break;
 690     case PROP_RESTRICT_TO_FILL_LEVEL:
 691       g_value_set_boolean (value, gtk_range_get_restrict_to_fill_level (range));
 692       break;
 693     case PROP_FILL_LEVEL:
 694       g_value_set_double (value, gtk_range_get_fill_level (range));
 695       break;
 696     default:
 697       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 698       break;
 699     }
 700 }
 701
 702 static void
 703 gtk_range_init (GtkRange *range)
 704 {
 705   GtkRangePrivate *priv;
 706
 707   range->priv = G_TYPE_INSTANCE_GET_PRIVATE (range,
 708                                              GTK_TYPE_RANGE,
 709                                              GtkRangePrivate);
 710   priv = range->priv;
 711
 712   gtk_widget_set_has_window (GTK_WIDGET (range), FALSE);
 713
 714   priv->orientation = GTK_ORIENTATION_HORIZONTAL;
 715   priv->adjustment = NULL;
 716   priv->update_policy = GTK_UPDATE_CONTINUOUS;
 717   priv->inverted = FALSE;
 718   priv->flippable = FALSE;
 719   priv->min_slider_size = 1;
 720   priv->has_stepper_a = FALSE;
 721   priv->has_stepper_b = FALSE;
 722   priv->has_stepper_c = FALSE;
 723   priv->has_stepper_d = FALSE;
 724   priv->need_recalc = TRUE;
 725   priv->round_digits = -1;
 726   priv->mouse_location = MOUSE_OUTSIDE;
 727   priv->mouse_x = -1;
 728   priv->mouse_y = -1;
 729   priv->grab_location = MOUSE_OUTSIDE;
 730   priv->grab_button = 0;
 731   priv->lower_sensitivity = GTK_SENSITIVITY_AUTO;
 732   priv->upper_sensitivity = GTK_SENSITIVITY_AUTO;
 733   priv->lower_sensitive = TRUE;
 734   priv->upper_sensitive = TRUE;
 735   priv->show_fill_level = FALSE;
 736   priv->restrict_to_fill_level = TRUE;
 737   priv->fill_level = G_MAXDOUBLE;
 738   priv->timer = NULL;
 739 }
 740
 741 /**
 742  * gtk_range_get_adjustment:
 743  * @range: a #GtkRange
 744  *
 745  * Get the #GtkAdjustment which is the "model" object for #GtkRange.
 746  * See gtk_range_set_adjustment() for details.
 747  * The return value does not have a reference added, so should not
 748  * be unreferenced.
 749  *
 750  * Return value: (transfer none): a #GtkAdjustment
 751  **/
 752 GtkAdjustment*
 753 gtk_range_get_adjustment (GtkRange *range)
 754 {
 755   GtkRangePrivate *priv;
 756
 757   g_return_val_if_fail (GTK_IS_RANGE (range), NULL);
 758
 759   priv = range->priv;
 760
 761   if (!priv->adjustment)
 762     gtk_range_set_adjustment (range, NULL);
 763
 764   return priv->adjustment;
 765 }
 766
 767 /**
 768  * gtk_range_set_update_policy:
 769  * @range: a #GtkRange
 770  * @policy: update policy
 771  *
 772  * Sets the update policy for the range. #GTK_UPDATE_CONTINUOUS means that
 773  * anytime the range slider is moved, the range value will change and the
 774  * value_changed signal will be emitted. #GTK_UPDATE_DELAYED means that
 775  * the value will be updated after a brief timeout where no slider motion
 776  * occurs, so updates are spaced by a short time rather than
 777  * continuous. #GTK_UPDATE_DISCONTINUOUS means that the value will only
 778  * be updated when the user releases the button and ends the slider
 779  * drag operation.
 780  **/
 781 void
 782 gtk_range_set_update_policy (GtkRange      *range,
 783                              GtkUpdateType  policy)
 784 {
 785   GtkRangePrivate *priv;
 786
 787   g_return_if_fail (GTK_IS_RANGE (range));
 788
 789   priv = range->priv;
 790
 791   if (priv->update_policy != policy)
 792     {
 793       priv->update_policy = policy;
 794       g_object_notify (G_OBJECT (range), "update-policy");
 795     }
 796 }
 797
 798 /**
 799  * gtk_range_get_update_policy:
 800  * @range: a #GtkRange
 801  *
 802  * Gets the update policy of @range. See gtk_range_set_update_policy().
 803  *
 804  * Return value: the current update policy
 805  **/
 806 GtkUpdateType
 807 gtk_range_get_update_policy (GtkRange *range)
 808 {
 809   g_return_val_if_fail (GTK_IS_RANGE (range), GTK_UPDATE_CONTINUOUS);
 810
 811   return range->priv->update_policy;
 812 }
 813
 814 /**
 815  * gtk_range_set_adjustment:
 816  * @range: a #GtkRange
 817  * @adjustment: a #GtkAdjustment
 818  *
 819  * Sets the adjustment to be used as the "model" object for this range
 820  * widget. The adjustment indicates the current range value, the
 821  * minimum and maximum range values, the step/page increments used
 822  * for keybindings and scrolling, and the page size. The page size
 823  * is normally 0 for #GtkScale and nonzero for #GtkScrollbar, and
 824  * indicates the size of the visible area of the widget being scrolled.
 825  * The page size affects the size of the scrollbar slider.
 826  **/
 827 void
 828 gtk_range_set_adjustment (GtkRange      *range,
 829                           GtkAdjustment *adjustment)
 830 {
 831   GtkRangePrivate *priv;
 832
 833   g_return_if_fail (GTK_IS_RANGE (range));
 834
 835   priv = range->priv;
 836
 837   if (!adjustment)
 838     adjustment = gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
 839   else
 840     g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
 841
 842   if (priv->adjustment != adjustment)
 843     {
 844       if (priv->adjustment)
 845         {
 846           g_signal_handlers_disconnect_by_func (priv->adjustment,
 847                                                 gtk_range_adjustment_changed,
 848                                                 range);
 849           g_signal_handlers_disconnect_by_func (priv->adjustment,
 850                                                 gtk_range_adjustment_value_changed,
 851                                                 range);
 852           g_object_unref (priv->adjustment);
 853         }
 854
 855       priv->adjustment = adjustment;
 856       g_object_ref_sink (adjustment);
 857
 858       g_signal_connect (adjustment, "changed",
 859                         G_CALLBACK (gtk_range_adjustment_changed),
 860                         range);
 861       g_signal_connect (adjustment, "value-changed",
 862                         G_CALLBACK (gtk_range_adjustment_value_changed),
 863                         range);
 864
 865       gtk_range_adjustment_changed (adjustment, range);
 866       g_object_notify (G_OBJECT (range), "adjustment");
 867     }
 868 }
 869
 870 /**
 871  * gtk_range_set_inverted:
 872  * @range: a #GtkRange
 873  * @setting: %TRUE to invert the range
 874  *
 875  * Ranges normally move from lower to higher values as the
 876  * slider moves from top to bottom or left to right. Inverted
 877  * ranges have higher values at the top or on the right rather than
 878  * on the bottom or left.
 879  **/
 880 void
 881 gtk_range_set_inverted (GtkRange *range,
 882                         gboolean  setting)
 883 {
 884   GtkRangePrivate *priv;
 885
 886   g_return_if_fail (GTK_IS_RANGE (range));
 887
 888   priv = range->priv;
 889
 890   setting = setting != FALSE;
 891
 892   if (setting != priv->inverted)
 893     {
 894       priv->inverted = setting;
 895       g_object_notify (G_OBJECT (range), "inverted");
 896       gtk_widget_queue_resize (GTK_WIDGET (range));
 897     }
 898 }
 899
 900 /**
 901  * gtk_range_get_inverted:
 902  * @range: a #GtkRange
 903  *
 904  * Gets the value set by gtk_range_set_inverted().
 905  *
 906  * Return value: %TRUE if the range is inverted
 907  **/
 908 gboolean
 909 gtk_range_get_inverted (GtkRange *range)
 910 {
 911   g_return_val_if_fail (GTK_IS_RANGE (range), FALSE);
 912
 913   return range->priv->inverted;
 914 }
 915
 916 /**
 917  * gtk_range_set_flippable:
 918  * @range: a #GtkRange
 919  * @flippable: %TRUE to make the range flippable
 920  *
 921  * If a range is flippable, it will switch its direction if it is
 922  * horizontal and its direction is %GTK_TEXT_DIR_RTL.
 923  *
 924  * See gtk_widget_get_direction().
 925  *
 926  * Since: 2.18
 927  **/
 928 void
 929 gtk_range_set_flippable (GtkRange *range,
 930                          gboolean  flippable)
 931 {
 932   GtkRangePrivate *priv;
 933
 934   g_return_if_fail (GTK_IS_RANGE (range));
 935
 936   priv = range->priv;
 937
 938   flippable = flippable ? TRUE : FALSE;
 939
 940   if (flippable != priv->flippable)
 941     {
 942       priv->flippable = flippable;
 943
 944       gtk_widget_queue_draw (GTK_WIDGET (range));
 945     }
 946 }
 947
 948 /**
 949  * gtk_range_get_flippable:
 950  * @range: a #GtkRange
 951  *
 952  * Gets the value set by gtk_range_set_flippable().
 953  *
 954  * Return value: %TRUE if the range is flippable
 955  *
 956  * Since: 2.18
 957  **/
 958 gboolean
 959 gtk_range_get_flippable (GtkRange *range)
 960 {
 961   g_return_val_if_fail (GTK_IS_RANGE (range), FALSE);
 962
 963   return range->priv->flippable;
 964 }
 965
 966 /**
 967  * gtk_range_set_slider_size_fixed:
 968  * @range: a #GtkRange
 969  * @size_fixed: %TRUE to make the slider size constant
 970  *
 971  * Sets whether the range's slider has a fixed size, or a size that
 972  * depends on it's adjustment's page size.
 973  *
 974  * This function is useful mainly for #GtkRange subclasses.
 975  *
 976  * Since: 2.20
 977  **/
 978 void
 979 gtk_range_set_slider_size_fixed (GtkRange *range,
 980                                  gboolean  size_fixed)
 981 {
 982   GtkRangePrivate *priv;
 983
 984   g_return_if_fail (GTK_IS_RANGE (range));
 985
 986   priv = range->priv;
 987
 988   if (size_fixed != priv->slider_size_fixed)
 989     {
 990       priv->slider_size_fixed = size_fixed ? TRUE : FALSE;
 991
 992       if (priv->adjustment && gtk_widget_get_mapped (GTK_WIDGET (range)))
 993         {
 994           priv->need_recalc = TRUE;
 995           gtk_range_calc_layout (range, gtk_adjustment_get_value (priv->adjustment));
 996           gtk_widget_queue_draw (GTK_WIDGET (range));
 997         }
 998     }
 999 }
1000
1001 /**
1002  * gtk_range_get_slider_size_fixed:
1003  * @range: a #GtkRange
1004  *
1005  * This function is useful mainly for #GtkRange subclasses.
1006  *
1007  * See gtk_range_set_slider_size_fixed().
1008  *
1009  * Return value: whether the range's slider has a fixed size.
1010  *
1011  * Since: 2.20
1012  **/
1013 gboolean
1014 gtk_range_get_slider_size_fixed (GtkRange *range)
1015 {
1016   g_return_val_if_fail (GTK_IS_RANGE (range), FALSE);
1017
1018   return range->priv->slider_size_fixed;
1019 }
1020
1021 /**
1022  * gtk_range_set_min_slider_size:
1023  * @range: a #GtkRange
1024  * @min_size: The slider's minimum size
1025  *
1026  * Sets the minimum size of the range's slider.
1027  *
1028  * This function is useful mainly for #GtkRange subclasses.
1029  *
1030  * Since: 2.20
1031  **/
1032 void
1033 gtk_range_set_min_slider_size (GtkRange *range,
1034                                gint      min_size)
1035 {
1036   GtkRangePrivate *priv;
1037
1038   g_return_if_fail (GTK_IS_RANGE (range));
1039   g_return_if_fail (min_size > 0);
1040
1041   priv = range->priv;
1042
1043   if (min_size != priv->min_slider_size)
1044     {
1045       priv->min_slider_size = min_size;
1046
1047       priv->need_recalc = TRUE;
1048       gtk_range_calc_layout (range, priv->adjustment->value);
1049       gtk_widget_queue_draw (GTK_WIDGET (range));
1050     }
1051 }
1052
1053 /**
1054  * gtk_range_get_min_slider_size:
1055  * @range: a #GtkRange
1056  *
1057  * This function is useful mainly for #GtkRange subclasses.
1058  *
1059  * See gtk_range_set_min_slider_size().
1060  *
1061  * Return value: The minimum size of the range's slider.
1062  *
1063  * Since: 2.20
1064  **/
1065 gint
1066 gtk_range_get_min_slider_size (GtkRange *range)
1067 {
1068   g_return_val_if_fail (GTK_IS_RANGE (range), FALSE);
1069
1070   return range->priv->min_slider_size;
1071 }
1072
1073 /**
1074  * gtk_range_get_range_rect:
1075  * @range: a #GtkRange
1076  * @range_rect: return location for the range rectangle
1077  *
1078  * This function returns the area that contains the range's trough
1079  * and its steppers, in widget->window coordinates.
1080  *
1081  * This function is useful mainly for #GtkRange subclasses.
1082  *
1083  * Since: 2.20
1084  **/
1085 void
1086 gtk_range_get_range_rect (GtkRange     *range,
1087                           GdkRectangle *range_rect)
1088 {
1089   GtkRangePrivate *priv;
1090
1091   g_return_if_fail (GTK_IS_RANGE (range));
1092   g_return_if_fail (range_rect != NULL);
1093
1094   priv = range->priv;
1095
1096   gtk_range_calc_layout (range, priv->adjustment->value);
1097
1098   *range_rect = priv->range_rect;
1099 }
1100
1101 /**
1102  * gtk_range_get_slider_range:
1103  * @range: a #GtkRange
1104  * @slider_start: (allow-none): return location for the slider's start, or %NULL
1105  * @slider_end: (allow-none): return location for the slider's end, or %NULL
1106  *
1107  * This function returns sliders range along the long dimension,
1108  * in widget->window coordinates.
1109  *
1110  * This function is useful mainly for #GtkRange subclasses.
1111  *
1112  * Since: 2.20
1113  **/
1114 void
1115 gtk_range_get_slider_range (GtkRange *range,
1116                             gint     *slider_start,
1117                             gint     *slider_end)
1118 {
1119   GtkRangePrivate *priv;
1120
1121   g_return_if_fail (GTK_IS_RANGE (range));
1122
1123   priv = range->priv;
1124
1125   gtk_range_calc_layout (range, priv->adjustment->value);
1126
1127   if (slider_start)
1128     *slider_start = priv->slider_start;
1129
1130   if (slider_end)
1131     *slider_end = priv->slider_end;
1132 }
1133
1134 /**
1135  * gtk_range_set_lower_stepper_sensitivity:
1136  * @range:       a #GtkRange
1137  * @sensitivity: the lower stepper's sensitivity policy.
1138  *
1139  * Sets the sensitivity policy for the stepper that points to the
1140  * 'lower' end of the GtkRange's adjustment.
1141  *
1142  * Since: 2.10
1143  **/
1144 void
1145 gtk_range_set_lower_stepper_sensitivity (GtkRange           *range,
1146                                          GtkSensitivityType  sensitivity)
1147 {
1148   GtkRangePrivate *priv;
1149
1150   g_return_if_fail (GTK_IS_RANGE (range));
1151
1152   priv = range->priv;
1153
1154   if (priv->lower_sensitivity != sensitivity)
1155     {
1156       priv->lower_sensitivity = sensitivity;
1157
1158       priv->need_recalc = TRUE;
1159       gtk_range_calc_layout (range, priv->adjustment->value);
1160       gtk_widget_queue_draw (GTK_WIDGET (range));
1161
1162       g_object_notify (G_OBJECT (range), "lower-stepper-sensitivity");
1163     }
1164 }
1165
1166 /**
1167  * gtk_range_get_lower_stepper_sensitivity:
1168  * @range: a #GtkRange
1169  *
1170  * Gets the sensitivity policy for the stepper that points to the
1171  * 'lower' end of the GtkRange's adjustment.
1172  *
1173  * Return value: The lower stepper's sensitivity policy.
1174  *
1175  * Since: 2.10
1176  **/
1177 GtkSensitivityType
1178 gtk_range_get_lower_stepper_sensitivity (GtkRange *range)
1179 {
1180   g_return_val_if_fail (GTK_IS_RANGE (range), GTK_SENSITIVITY_AUTO);
1181
1182   return range->priv->lower_sensitivity;
1183 }
1184
1185 /**
1186  * gtk_range_set_upper_stepper_sensitivity:
1187  * @range:       a #GtkRange
1188  * @sensitivity: the upper stepper's sensitivity policy.
1189  *
1190  * Sets the sensitivity policy for the stepper that points to the
1191  * 'upper' end of the GtkRange's adjustment.
1192  *
1193  * Since: 2.10
1194  **/
1195 void
1196 gtk_range_set_upper_stepper_sensitivity (GtkRange           *range,
1197                                          GtkSensitivityType  sensitivity)
1198 {
1199   GtkRangePrivate *priv;
1200
1201   g_return_if_fail (GTK_IS_RANGE (range));
1202
1203   priv = range->priv;
1204
1205   if (priv->upper_sensitivity != sensitivity)
1206     {
1207       priv->upper_sensitivity = sensitivity;
1208
1209       priv->need_recalc = TRUE;
1210       gtk_range_calc_layout (range, priv->adjustment->value);
1211       gtk_widget_queue_draw (GTK_WIDGET (range));
1212
1213       g_object_notify (G_OBJECT (range), "upper-stepper-sensitivity");
1214     }
1215 }
1216
1217 /**
1218  * gtk_range_get_upper_stepper_sensitivity:
1219  * @range: a #GtkRange
1220  *
1221  * Gets the sensitivity policy for the stepper that points to the
1222  * 'upper' end of the GtkRange's adjustment.
1223  *
1224  * Return value: The upper stepper's sensitivity policy.
1225  *
1226  * Since: 2.10
1227  **/
1228 GtkSensitivityType
1229 gtk_range_get_upper_stepper_sensitivity (GtkRange *range)
1230 {
1231   g_return_val_if_fail (GTK_IS_RANGE (range), GTK_SENSITIVITY_AUTO);
1232
1233   return range->priv->upper_sensitivity;
1234 }
1235
1236 /**
1237  * gtk_range_set_increments:
1238  * @range: a #GtkRange
1239  * @step: step size
1240  * @page: page size
1241  *
1242  * Sets the step and page sizes for the range.
1243  * The step size is used when the user clicks the #GtkScrollbar
1244  * arrows or moves #GtkScale via arrow keys. The page size
1245  * is used for example when moving via Page Up or Page Down keys.
1246  **/
1247 void
1248 gtk_range_set_increments (GtkRange *range,
1249                           gdouble   step,
1250                           gdouble   page)
1251 {
1252   GtkRangePrivate *priv;
1253
1254   g_return_if_fail (GTK_IS_RANGE (range));
1255
1256   priv = range->priv;
1257
1258   priv->adjustment->step_increment = step;
1259   priv->adjustment->page_increment = page;
1260
1261   gtk_adjustment_changed (priv->adjustment);
1262 }
1263
1264 /**
1265  * gtk_range_set_range:
1266  * @range: a #GtkRange
1267  * @min: minimum range value
1268  * @max: maximum range value
1269  *
1270  * Sets the allowable values in the #GtkRange, and clamps the range
1271  * value to be between @min and @max. (If the range has a non-zero
1272  * page size, it is clamped between @min and @max - page-size.)
1273  **/
1274 void
1275 gtk_range_set_range (GtkRange *range,
1276                      gdouble   min,
1277                      gdouble   max)
1278 {
1279   GtkRangePrivate *priv;
1280   gdouble value;
1281
1282   g_return_if_fail (GTK_IS_RANGE (range));
1283   g_return_if_fail (min < max);
1284
1285   priv = range->priv;
1286
1287   priv->adjustment->lower = min;
1288   priv->adjustment->upper = max;
1289
1290   value = priv->adjustment->value;
1291
1292   if (priv->restrict_to_fill_level)
1293     value = MIN (value, MAX (priv->adjustment->lower,
1294                              priv->fill_level));
1295
1296   gtk_adjustment_set_value (priv->adjustment, value);
1297   gtk_adjustment_changed (priv->adjustment);
1298 }
1299
1300 /**
1301  * gtk_range_set_value:
1302  * @range: a #GtkRange
1303  * @value: new value of the range
1304  *
1305  * Sets the current value of the range; if the value is outside the
1306  * minimum or maximum range values, it will be clamped to fit inside
1307  * them. The range emits the #GtkRange::value-changed signal if the
1308  * value changes.
1309  **/
1310 void
1311 gtk_range_set_value (GtkRange *range,
1312                      gdouble   value)
1313 {
1314   GtkRangePrivate *priv;
1315
1316   g_return_if_fail (GTK_IS_RANGE (range));
1317
1318   priv = range->priv;
1319
1320   if (priv->restrict_to_fill_level)
1321     value = MIN (value, MAX (priv->adjustment->lower,
1322                              priv->fill_level));
1323
1324   gtk_adjustment_set_value (priv->adjustment, value);
1325 }
1326
1327 /**
1328  * gtk_range_get_value:
1329  * @range: a #GtkRange
1330  *
1331  * Gets the current value of the range.
1332  *
1333  * Return value: current value of the range.
1334  **/
1335 gdouble
1336 gtk_range_get_value (GtkRange *range)
1337 {
1338   g_return_val_if_fail (GTK_IS_RANGE (range), 0.0);
1339
1340   return range->priv->adjustment->value;
1341 }
1342
1343 /**
1344  * gtk_range_set_show_fill_level:
1345  * @range:           A #GtkRange
1346  * @show_fill_level: Whether a fill level indicator graphics is shown.
1347  *
1348  * Sets whether a graphical fill level is show on the trough. See
1349  * gtk_range_set_fill_level() for a general description of the fill
1350  * level concept.
1351  *
1352  * Since: 2.12
1353  **/
1354 void
1355 gtk_range_set_show_fill_level (GtkRange *range,
1356                                gboolean  show_fill_level)
1357 {
1358   GtkRangePrivate *priv;
1359
1360   g_return_if_fail (GTK_IS_RANGE (range));
1361
1362   priv = range->priv;
1363
1364   show_fill_level = show_fill_level ? TRUE : FALSE;
1365
1366   if (show_fill_level != priv->show_fill_level)
1367     {
1368       priv->show_fill_level = show_fill_level;
1369       g_object_notify (G_OBJECT (range), "show-fill-level");
1370       gtk_widget_queue_draw (GTK_WIDGET (range));
1371     }
1372 }
1373
1374 /**
1375  * gtk_range_get_show_fill_level:
1376  * @range: A #GtkRange
1377  *
1378  * Gets whether the range displays the fill level graphically.
1379  *
1380  * Return value: %TRUE if @range shows the fill level.
1381  *
1382  * Since: 2.12
1383  **/
1384 gboolean
1385 gtk_range_get_show_fill_level (GtkRange *range)
1386 {
1387   g_return_val_if_fail (GTK_IS_RANGE (range), FALSE);
1388
1389   return range->priv->show_fill_level;
1390 }
1391
1392 /**
1393  * gtk_range_set_restrict_to_fill_level:
1394  * @range:                  A #GtkRange
1395  * @restrict_to_fill_level: Whether the fill level restricts slider movement.
1396  *
1397  * Sets whether the slider is restricted to the fill level. See
1398  * gtk_range_set_fill_level() for a general description of the fill
1399  * level concept.
1400  *
1401  * Since: 2.12
1402  **/
1403 void
1404 gtk_range_set_restrict_to_fill_level (GtkRange *range,
1405                                       gboolean  restrict_to_fill_level)
1406 {
1407   GtkRangePrivate *priv;
1408
1409   g_return_if_fail (GTK_IS_RANGE (range));
1410
1411   priv = range->priv;
1412
1413   restrict_to_fill_level = restrict_to_fill_level ? TRUE : FALSE;
1414
1415   if (restrict_to_fill_level != priv->restrict_to_fill_level)
1416     {
1417       priv->restrict_to_fill_level = restrict_to_fill_level;
1418       g_object_notify (G_OBJECT (range), "restrict-to-fill-level");
1419
1420       gtk_range_set_value (range, gtk_range_get_value (range));
1421     }
1422 }
1423
1424 /**
1425  * gtk_range_get_restrict_to_fill_level:
1426  * @range: A #GtkRange
1427  *
1428  * Gets whether the range is restricted to the fill level.
1429  *
1430  * Return value: %TRUE if @range is restricted to the fill level.
1431  *
1432  * Since: 2.12
1433  **/
1434 gboolean
1435 gtk_range_get_restrict_to_fill_level (GtkRange *range)
1436 {
1437   g_return_val_if_fail (GTK_IS_RANGE (range), FALSE);
1438
1439   return range->priv->restrict_to_fill_level;
1440 }
1441
1442 /**
1443  * gtk_range_set_fill_level:
1444  * @range: a #GtkRange
1445  * @fill_level: the new position of the fill level indicator
1446  *
1447  * Set the new position of the fill level indicator.
1448  *
1449  * The "fill level" is probably best described by its most prominent
1450  * use case, which is an indicator for the amount of pre-buffering in
1451  * a streaming media player. In that use case, the value of the range
1452  * would indicate the current play position, and the fill level would
1453  * be the position up to which the file/stream has been downloaded.
1454  *
1455  * This amount of prebuffering can be displayed on the range's trough
1456  * and is themeable separately from the trough. To enable fill level
1457  * display, use gtk_range_set_show_fill_level(). The range defaults
1458  * to not showing the fill level.
1459  *
1460  * Additionally, it's possible to restrict the range's slider position
1461  * to values which are smaller than the fill level. This is controller
1462  * by gtk_range_set_restrict_to_fill_level() and is by default
1463  * enabled.
1464  *
1465  * Since: 2.12
1466  **/
1467 void
1468 gtk_range_set_fill_level (GtkRange *range,
1469                           gdouble   fill_level)
1470 {
1471   GtkRangePrivate *priv;
1472
1473   g_return_if_fail (GTK_IS_RANGE (range));
1474
1475   priv = range->priv;
1476
1477   if (fill_level != priv->fill_level)
1478     {
1479       priv->fill_level = fill_level;
1480       g_object_notify (G_OBJECT (range), "fill-level");
1481
1482       if (priv->show_fill_level)
1483         gtk_widget_queue_draw (GTK_WIDGET (range));
1484
1485       if (priv->restrict_to_fill_level)
1486         gtk_range_set_value (range, gtk_range_get_value (range));
1487     }
1488 }
1489
1490 /**
1491  * gtk_range_get_fill_level:
1492  * @range: A #GtkRange
1493  *
1494  * Gets the current position of the fill level indicator.
1495  *
1496  * Return value: The current fill level
1497  *
1498  * Since: 2.12
1499  **/
1500 gdouble
1501 gtk_range_get_fill_level (GtkRange *range)
1502 {
1503   g_return_val_if_fail (GTK_IS_RANGE (range), 0.0);
1504
1505   return range->priv->fill_level;
1506 }
1507
1508 static gboolean
1509 should_invert (GtkRange *range)
1510 {
1511   GtkRangePrivate *priv = range->priv;
1512
1513   if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
1514     return
1515       (priv->inverted && !priv->flippable) ||
1516       (priv->inverted && priv->flippable && gtk_widget_get_direction (GTK_WIDGET (range)) == GTK_TEXT_DIR_LTR) ||
1517       (!priv->inverted && priv->flippable && gtk_widget_get_direction (GTK_WIDGET (range)) == GTK_TEXT_DIR_RTL);
1518   else
1519     return priv->inverted;
1520 }
1521
1522 static void
1523 gtk_range_destroy (GtkWidget *widget)
1524 {
1525   GtkRange *range = GTK_RANGE (widget);
1526   GtkRangePrivate *priv = range->priv;
1527
1528   gtk_range_remove_step_timer (range);
1529   gtk_range_remove_update_timer (range);
1530
1531   if (priv->repaint_id)
1532     g_source_remove (priv->repaint_id);
1533   priv->repaint_id = 0;
1534
1535   if (priv->adjustment)
1536     {
1537       g_signal_handlers_disconnect_by_func (priv->adjustment,
1538                                             gtk_range_adjustment_changed,
1539                                             range);
1540       g_signal_handlers_disconnect_by_func (priv->adjustment,
1541                                             gtk_range_adjustment_value_changed,
1542                                             range);
1543       g_object_unref (priv->adjustment);
1544       priv->adjustment = NULL;
1545     }
1546
1547   if (priv->n_marks)
1548     {
1549       g_free (priv->marks);
1550       priv->marks = NULL;
1551       g_free (priv->mark_pos);
1552       priv->mark_pos = NULL;
1553       priv->n_marks = 0;
1554     }
1555
1556   GTK_WIDGET_CLASS (gtk_range_parent_class)->destroy (widget);
1557 }
1558
1559 static void
1560 gtk_range_get_preferred_width (GtkWidget *widget,
1561                                gint      *minimum,
1562                                gint      *natural)
1563 {
1564   GtkRange *range;
1565   gint slider_width, stepper_size, focus_width, trough_border, stepper_spacing;
1566   GdkRectangle range_rect;
1567   GtkBorder border;
1568
1569   range = GTK_RANGE (widget);
1570
1571   gtk_range_get_props (range,
1572                        &slider_width, &stepper_size,
1573                        &focus_width, &trough_border,
1574                        &stepper_spacing, NULL,
1575                        NULL, NULL);
1576
1577   gtk_range_calc_request (range,
1578                           slider_width, stepper_size,
1579                           focus_width, trough_border, stepper_spacing,
1580                           &range_rect, &border, NULL, NULL, NULL, NULL);
1581
1582   *minimum = *natural = range_rect.width + border.left + border.right;
1583 }
1584
1585 static void
1586 gtk_range_get_preferred_height (GtkWidget *widget,
1587                                 gint      *minimum,
1588                                 gint      *natural)
1589 {
1590   GtkRange *range;
1591   gint slider_width, stepper_size, focus_width, trough_border, stepper_spacing;
1592   GdkRectangle range_rect;
1593   GtkBorder border;
1594
1595   range = GTK_RANGE (widget);
1596
1597   gtk_range_get_props (range,
1598                        &slider_width, &stepper_size,
1599                        &focus_width, &trough_border,
1600                        &stepper_spacing, NULL,
1601                        NULL, NULL);
1602
1603   gtk_range_calc_request (range,
1604                           slider_width, stepper_size,
1605                           focus_width, trough_border, stepper_spacing,
1606                           &range_rect, &border, NULL, NULL, NULL, NULL);
1607
1608   *minimum = *natural = range_rect.height + border.top + border.bottom;
1609 }
1610
1611 static gboolean
1612 modify_allocation_for_window_grip (GtkWidget     *widget,
1613                                    GtkAllocation *allocation)
1614 {
1615   GtkRange *range = GTK_RANGE (widget);
1616   GtkRangePrivate *priv = range->priv;
1617   GtkWidget *window, *parent;
1618   GdkRectangle grip_rect;
1619   GdkRectangle translated_rect;
1620   gint x;
1621   gint y;
1622
1623   window = gtk_widget_get_toplevel (widget);
1624   if (!GTK_IS_WINDOW (window))
1625     return FALSE;
1626
1627   if (!gtk_window_resize_grip_is_visible (GTK_WINDOW (window)))
1628     return FALSE;
1629
1630   /* Get the area of the window's corner grip */
1631   gtk_window_get_resize_grip_area (GTK_WINDOW (window), &grip_rect);
1632
1633   x = 0;
1634   y = 0;
1635
1636   /* Translate the stepper's area into window coords.
1637    * This is slightly tricky. We can't just use
1638    * gtk_widget_translate_coordinates (widget, window, 0, 0, &x, &y)
1639    * since that translates wrt to the _current_ allocation
1640    * and will lead to alternating between overlap and nonoverlap
1641    * for successive allocations.
1642    * Therefore, we find the window-widget to whose window allocation
1643    * is relative, and translate from there upwards.
1644    */
1645   parent = widget;
1646   while (gtk_widget_get_window (parent) == gtk_widget_get_window (widget) &&
1647          parent != window)
1648     {
1649       parent = gtk_widget_get_parent (parent);
1650     }
1651
1652   if (parent == window)
1653     translated_rect = *allocation;
1654   else
1655     {
1656       gtk_widget_translate_coordinates (gtk_widget_get_parent (widget),
1657                                         window,
1658                                         allocation->x, allocation->y,
1659                                         &x, &y);
1660       translated_rect.x = x;
1661       translated_rect.y = y;
1662       translated_rect.width = allocation->width;
1663       translated_rect.height = allocation->height;
1664     }
1665
1666   /* If the stepper button intersects the window resize grip.. */
1667   if (gdk_rectangle_intersect (&grip_rect, &translated_rect, NULL))
1668     {
1669       if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
1670         {
1671           allocation->width -= grip_rect.width;
1672           if (gtk_widget_get_direction (window) == GTK_TEXT_DIR_RTL)
1673             allocation->x += grip_rect.width;
1674         }
1675       else
1676         {
1677           allocation->height -= grip_rect.height;
1678         }
1679
1680       return TRUE;
1681     }
1682
1683   return FALSE;
1684 }
1685
1686 static void
1687 gtk_range_size_allocate (GtkWidget     *widget,
1688                          GtkAllocation *allocation)
1689 {
1690   GtkRange *range = GTK_RANGE (widget);
1691   GtkRangePrivate *priv = range->priv;
1692
1693   modify_allocation_for_window_grip (widget, allocation);
1694   gtk_widget_set_allocation (widget, allocation);
1695
1696   priv->recalc_marks = TRUE;
1697
1698   priv->need_recalc = TRUE;
1699   gtk_range_calc_layout (range, priv->adjustment->value);
1700
1701   if (gtk_widget_get_realized (widget))
1702     gdk_window_move_resize (priv->event_window,
1703                             allocation->x, allocation->y,
1704                             allocation->width, allocation->height);
1705 }
1706
1707 static void
1708 resize_grip_visible_changed (GObject    *object,
1709                              GParamSpec *pspec,
1710                              gpointer    user_data)
1711 {
1712   gtk_widget_queue_resize (GTK_WIDGET (user_data));
1713 }
1714
1715 static void
1716 gtk_range_hierarchy_changed (GtkWidget *widget,
1717                              GtkWidget *previous_toplevel)
1718 {
1719   GtkWidget *window;
1720
1721   if (previous_toplevel)
1722     g_signal_handlers_disconnect_by_func (previous_toplevel,
1723                                           G_CALLBACK (resize_grip_visible_changed),
1724                                           widget);
1725   window = gtk_widget_get_toplevel (widget);
1726   if (GTK_IS_WINDOW (window))
1727     g_signal_connect (window, "notify::resize-grip-visible",
1728                       G_CALLBACK (resize_grip_visible_changed), widget);
1729 }
1730
1731 static void
1732 gtk_range_realize (GtkWidget *widget)
1733 {
1734   GtkAllocation allocation;
1735   GtkRange *range = GTK_RANGE (widget);
1736   GtkRangePrivate *priv = range->priv;
1737   GdkWindow *window;
1738   GdkWindowAttr attributes;
1739   gint attributes_mask;
1740
1741   gtk_range_calc_layout (range, priv->adjustment->value);
1742
1743   gtk_widget_set_realized (widget, TRUE);
1744
1745   window = gtk_widget_get_parent_window (widget);
1746   gtk_widget_set_window (widget, window);
1747   g_object_ref (window);
1748
1749   gtk_widget_get_allocation (widget, &allocation);
1750   if (modify_allocation_for_window_grip (widget, &allocation))
1751     gtk_widget_set_allocation (widget, &allocation);
1752
1753   attributes.window_type = GDK_WINDOW_CHILD;
1754   attributes.x = allocation.x;
1755   attributes.y = allocation.y;
1756   attributes.width = allocation.width;
1757   attributes.height = allocation.height;
1758   attributes.wclass = GDK_INPUT_ONLY;
1759   attributes.event_mask = gtk_widget_get_events (widget);
1760   attributes.event_mask |= (GDK_BUTTON_PRESS_MASK |
1761                             GDK_BUTTON_RELEASE_MASK |
1762                             GDK_ENTER_NOTIFY_MASK |
1763                             GDK_LEAVE_NOTIFY_MASK |
1764                             GDK_POINTER_MOTION_MASK |
1765                             GDK_POINTER_MOTION_HINT_MASK);
1766
1767   attributes_mask = GDK_WA_X | GDK_WA_Y;
1768
1769   priv->event_window = gdk_window_new (gtk_widget_get_parent_window (widget),
1770                                         &attributes, attributes_mask);
1771   gdk_window_set_user_data (priv->event_window, range);
1772
1773   gtk_widget_style_attach (widget);
1774 }
1775
1776 static void
1777 gtk_range_unrealize (GtkWidget *widget)
1778 {
1779   GtkRange *range = GTK_RANGE (widget);
1780   GtkRangePrivate *priv = range->priv;
1781
1782   gtk_range_remove_step_timer (range);
1783   gtk_range_remove_update_timer (range);
1784
1785   gdk_window_set_user_data (priv->event_window, NULL);
1786   gdk_window_destroy (priv->event_window);
1787   priv->event_window = NULL;
1788
1789   GTK_WIDGET_CLASS (gtk_range_parent_class)->unrealize (widget);
1790 }
1791
1792 static void
1793 gtk_range_map (GtkWidget *widget)
1794 {
1795   GtkRange *range = GTK_RANGE (widget);
1796   GtkRangePrivate *priv = range->priv;
1797
1798   gdk_window_show (priv->event_window);
1799
1800   GTK_WIDGET_CLASS (gtk_range_parent_class)->map (widget);
1801 }
1802
1803 static void
1804 gtk_range_unmap (GtkWidget *widget)
1805 {
1806   GtkRange *range = GTK_RANGE (widget);
1807   GtkRangePrivate *priv = range->priv;
1808
1809   stop_scrolling (range);
1810
1811   gdk_window_hide (priv->event_window);
1812
1813   GTK_WIDGET_CLASS (gtk_range_parent_class)->unmap (widget);
1814 }
1815
1816 static const gchar *
1817 gtk_range_get_slider_detail (GtkRange *range)
1818 {
1819   GtkRangePrivate *priv = range->priv;
1820   const gchar *slider_detail;
1821
1822   if (priv->slider_detail_quark)
1823     return g_quark_to_string (priv->slider_detail_quark);
1824
1825   slider_detail = GTK_RANGE_GET_CLASS (range)->slider_detail;
1826
1827   if (slider_detail && slider_detail[0] == 'X')
1828     {
1829       gchar *detail = g_strdup (slider_detail);
1830
1831       detail[0] = priv->orientation == GTK_ORIENTATION_HORIZONTAL ? 'h' : 'v';
1832
1833       priv->slider_detail_quark = g_quark_from_string (detail);
1834
1835       g_free (detail);
1836
1837       return g_quark_to_string (priv->slider_detail_quark);
1838     }
1839
1840   return slider_detail;
1841 }
1842
1843 static const gchar *
1844 gtk_range_get_stepper_detail (GtkRange *range,
1845                               Stepper   stepper)
1846 {
1847   GtkRangePrivate *priv = range->priv;
1848   const gchar *stepper_detail;
1849   gchar *detail;
1850   const gchar *position = NULL;
1851
1852   if (priv->stepper_detail_quark[stepper])
1853     return g_quark_to_string (priv->stepper_detail_quark[stepper]);
1854
1855   stepper_detail = GTK_RANGE_GET_CLASS (range)->stepper_detail;
1856
1857   switch (stepper)
1858     {
1859     case STEPPER_A:
1860       position = "_start";
1861       break;
1862     case STEPPER_B:
1863       if (priv->has_stepper_a)
1864         position = "_start_inner";
1865       else
1866         position = "_start";
1867       break;
1868     case STEPPER_C:
1869       if (priv->has_stepper_d)
1870         position = "_end_inner";
1871       else
1872         position = "_end";
1873       break;
1874     case STEPPER_D:
1875       position = "_end";
1876       break;
1877     default:
1878       g_assert_not_reached ();
1879     }
1880
1881   detail = g_strconcat (stepper_detail, position, NULL);
1882
1883   if (detail[0] == 'X')
1884     detail[0] = priv->orientation == GTK_ORIENTATION_HORIZONTAL ? 'h' : 'v';
1885
1886   priv->stepper_detail_quark[stepper] = g_quark_from_string (detail);
1887
1888   g_free (detail);
1889
1890   return g_quark_to_string (priv->stepper_detail_quark[stepper]);
1891 }
1892
1893 static void
1894 draw_stepper (GtkRange     *range,
1895               Stepper       stepper,
1896               cairo_t      *cr,
1897               GtkArrowType  arrow_type,
1898               gboolean      clicked,
1899               gboolean      prelighted)
1900 {
1901   GtkRangePrivate *priv = range->priv;
1902   GtkAllocation allocation;
1903   GtkStateType state_type;
1904   GtkShadowType shadow_type;
1905   GtkStyle *style;
1906   GtkWidget *widget = GTK_WIDGET (range);
1907   GdkWindow *window;
1908   gfloat arrow_scaling;
1909   GdkRectangle *rect;
1910   gint arrow_x;
1911   gint arrow_y;
1912   gint arrow_width;
1913   gint arrow_height;
1914   gboolean arrow_sensitive;
1915
1916   switch (stepper)
1917     {
1918     case STEPPER_A:
1919       rect = &priv->stepper_a;
1920       break;
1921     case STEPPER_B:
1922       rect = &priv->stepper_b;
1923       break;
1924     case STEPPER_C:
1925       rect = &priv->stepper_c;
1926       break;
1927     case STEPPER_D:
1928       rect = &priv->stepper_d;
1929       break;
1930     default:
1931       g_assert_not_reached ();
1932     };
1933
1934   arrow_sensitive = TRUE;
1935
1936   gtk_widget_get_allocation (widget, &allocation);
1937
1938   if ((!priv->inverted && (arrow_type == GTK_ARROW_DOWN ||
1939                             arrow_type == GTK_ARROW_RIGHT)) ||
1940       (priv->inverted  && (arrow_type == GTK_ARROW_UP ||
1941                             arrow_type == GTK_ARROW_LEFT)))
1942     {
1943       arrow_sensitive = priv->upper_sensitive;
1944     }
1945   else
1946     {
1947       arrow_sensitive = priv->lower_sensitive;
1948     }
1949
1950   if (!gtk_widget_is_sensitive (GTK_WIDGET (range)) || !arrow_sensitive)
1951     state_type = GTK_STATE_INSENSITIVE;
1952   else if (clicked)
1953     state_type = GTK_STATE_ACTIVE;
1954   else if (prelighted)
1955     state_type = GTK_STATE_PRELIGHT;
1956   else
1957     state_type = GTK_STATE_NORMAL;
1958
1959   if (clicked && arrow_sensitive)
1960     shadow_type = GTK_SHADOW_IN;
1961   else
1962     shadow_type = GTK_SHADOW_OUT;
1963
1964   style = gtk_widget_get_style (widget);
1965   window = gtk_widget_get_window (widget);
1966
1967   gtk_paint_box (style, cr,
1968                  state_type, shadow_type,
1969                  widget,
1970                  gtk_range_get_stepper_detail (range, stepper),
1971                  rect->x,
1972                  rect->y,
1973                  rect->width,
1974                  rect->height);
1975
1976   gtk_widget_style_get (widget, "arrow-scaling", &arrow_scaling, NULL);
1977
1978   arrow_width = rect->width * arrow_scaling;
1979   arrow_height = rect->height * arrow_scaling;
1980   arrow_x = rect->x + (rect->width - arrow_width) / 2;
1981   arrow_y = rect->y + (rect->height - arrow_height) / 2;
1982
1983   if (clicked && arrow_sensitive)
1984     {
1985       gint arrow_displacement_x;
1986       gint arrow_displacement_y;
1987
1988       gtk_range_get_props (GTK_RANGE (widget),
1989                            NULL, NULL, NULL, NULL, NULL, NULL,
1990                            &arrow_displacement_x, &arrow_displacement_y);
1991
1992       arrow_x += arrow_displacement_x;
1993       arrow_y += arrow_displacement_y;
1994     }
1995
1996   gtk_paint_arrow (style, cr,
1997                    state_type, shadow_type,
1998                    widget,
1999                    gtk_range_get_stepper_detail (range, stepper),
2000                    arrow_type,
2001                    TRUE,
2002                    arrow_x, arrow_y, arrow_width, arrow_height);
2003 }
2004
2005 static gboolean
2006 gtk_range_draw (GtkWidget      *widget,
2007                 cairo_t        *cr)
2008 {
2009   GtkRange *range = GTK_RANGE (widget);
2010   GtkRangePrivate *priv = range->priv;
2011   gboolean sensitive;
2012   GtkStateType state;
2013   GtkShadowType shadow_type;
2014   GtkStyle *style;
2015   GdkWindow *window;
2016   gint focus_line_width = 0;
2017   gint focus_padding = 0;
2018   gboolean touchscreen;
2019
2020   g_object_get (gtk_widget_get_settings (widget),
2021                 "gtk-touchscreen-mode", &touchscreen,
2022                 NULL);
2023
2024   style = gtk_widget_get_style (widget);
2025   if (gtk_widget_get_can_focus (GTK_WIDGET (range)))
2026     gtk_widget_style_get (GTK_WIDGET (range),
2027                           "focus-line-width", &focus_line_width,
2028                           "focus-padding", &focus_padding,
2029                           NULL);
2030
2031   window = gtk_widget_get_window (widget);
2032
2033   /* we're now exposing, so there's no need to force early repaints */
2034   if (priv->repaint_id)
2035     g_source_remove (priv->repaint_id);
2036   priv->repaint_id = 0;
2037
2038   gtk_range_calc_marks (range);
2039   gtk_range_calc_layout (range, priv->adjustment->value);
2040
2041   sensitive = gtk_widget_is_sensitive (widget);
2042
2043   /* Just to be confusing, we draw the trough for the whole
2044    * range rectangle, not the trough rectangle (the trough
2045    * rectangle is just for hit detection)
2046    */
2047   cairo_save (cr);
2048   gdk_cairo_rectangle (cr, &priv->range_rect);
2049   cairo_clip (cr);
2050
2051     {
2052       gint     x      = (priv->range_rect.x +
2053                          focus_line_width + focus_padding);
2054       gint     y      = (priv->range_rect.y +
2055                          focus_line_width + focus_padding);
2056       gint     width  = (priv->range_rect.width -
2057                          2 * (focus_line_width + focus_padding));
2058       gint     height = (priv->range_rect.height -
2059                          2 * (focus_line_width + focus_padding));
2060       gboolean trough_under_steppers;
2061       gint     stepper_size;
2062       gint     stepper_spacing;
2063
2064       gtk_widget_style_get (GTK_WIDGET (range),
2065                             "trough-under-steppers", &trough_under_steppers,
2066                             "stepper-size",          &stepper_size,
2067                             "stepper-spacing",       &stepper_spacing,
2068                             NULL);
2069
2070       if (stepper_spacing > 0)
2071         trough_under_steppers = FALSE;
2072
2073       if (!trough_under_steppers)
2074         {
2075           gint offset  = 0;
2076           gint shorter = 0;
2077
2078           if (priv->has_stepper_a)
2079             offset += stepper_size;
2080
2081           if (priv->has_stepper_b)
2082             offset += stepper_size;
2083
2084           shorter += offset;
2085
2086           if (priv->has_stepper_c)
2087             shorter += stepper_size;
2088
2089           if (priv->has_stepper_d)
2090             shorter += stepper_size;
2091
2092           if (priv->has_stepper_a || priv->has_stepper_b)
2093             {
2094               offset  += stepper_spacing;
2095               shorter += stepper_spacing;
2096             }
2097
2098           if (priv->has_stepper_c || priv->has_stepper_d)
2099             {
2100               shorter += stepper_spacing;
2101             }
2102
2103           if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
2104             {
2105               x     += offset;
2106               width -= shorter;
2107             }
2108           else
2109             {
2110               y      += offset;
2111               height -= shorter;
2112             }
2113         }
2114
2115         {
2116           gint trough_change_pos_x = width;
2117           gint trough_change_pos_y = height;
2118
2119           if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
2120             trough_change_pos_x = (priv->slider.x +
2121                                    priv->slider.width / 2 -
2122                                    x);
2123           else
2124             trough_change_pos_y = (priv->slider.y +
2125                                    priv->slider.height / 2 -
2126                                    y);
2127
2128           gtk_paint_box (style, cr,
2129                          sensitive ? GTK_STATE_ACTIVE : GTK_STATE_INSENSITIVE,
2130                          GTK_SHADOW_IN,
2131                          GTK_WIDGET (range),
2132                          should_invert (range) ? "trough-upper" : "trough-lower",
2133                          x, y,
2134                          trough_change_pos_x, trough_change_pos_y);
2135
2136           if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
2137             trough_change_pos_y = 0;
2138           else
2139             trough_change_pos_x = 0;
2140
2141           gtk_paint_box (style, cr,
2142                          sensitive ? GTK_STATE_ACTIVE : GTK_STATE_INSENSITIVE,
2143                          GTK_SHADOW_IN,
2144                          GTK_WIDGET (range),
2145                          should_invert (range) ? "trough-lower" : "trough-upper",
2146                          x + trough_change_pos_x, y + trough_change_pos_y,
2147                          width - trough_change_pos_x,
2148                          height - trough_change_pos_y);
2149         }
2150
2151       if (priv->show_fill_level &&
2152           priv->adjustment->upper - priv->adjustment->page_size -
2153           priv->adjustment->lower != 0)
2154         {
2155           gdouble  fill_level  = priv->fill_level;
2156           gint     fill_x      = x;
2157           gint     fill_y      = y;
2158           gint     fill_width  = width;
2159           gint     fill_height = height;
2160           gchar   *fill_detail;
2161
2162           fill_level = CLAMP (fill_level, priv->adjustment->lower,
2163                               priv->adjustment->upper -
2164                               priv->adjustment->page_size);
2165
2166           if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
2167             {
2168               fill_x     = priv->trough.x;
2169               fill_width = (priv->slider.width +
2170                             (fill_level - priv->adjustment->lower) /
2171                             (priv->adjustment->upper -
2172                              priv->adjustment->lower -
2173                              priv->adjustment->page_size) *
2174                             (priv->trough.width -
2175                              priv->slider.width));
2176
2177               if (should_invert (range))
2178                 fill_x += priv->trough.width - fill_width;
2179             }
2180           else
2181             {
2182               fill_y      = priv->trough.y;
2183               fill_height = (priv->slider.height +
2184                              (fill_level - priv->adjustment->lower) /
2185                              (priv->adjustment->upper -
2186                               priv->adjustment->lower -
2187                               priv->adjustment->page_size) *
2188                              (priv->trough.height -
2189                               priv->slider.height));
2190
2191               if (should_invert (range))
2192                 fill_y += priv->trough.height - fill_height;
2193             }
2194
2195           if (fill_level < priv->adjustment->upper - priv->adjustment->page_size)
2196             fill_detail = "trough-fill-level-full";
2197           else
2198             fill_detail = "trough-fill-level";
2199
2200           gtk_paint_box (style, cr,
2201                          sensitive ? GTK_STATE_ACTIVE : GTK_STATE_INSENSITIVE,
2202                          GTK_SHADOW_OUT,
2203                          GTK_WIDGET (range), fill_detail,
2204                          fill_x, fill_y,
2205                          fill_width, fill_height);
2206         }
2207
2208       if (sensitive && gtk_widget_has_focus (widget))
2209         gtk_paint_focus (style, cr,
2210                          gtk_widget_get_state (widget),
2211                          widget, "trough",
2212                          priv->range_rect.x,
2213                          priv->range_rect.y,
2214                          priv->range_rect.width,
2215                          priv->range_rect.height);
2216     }
2217
2218   cairo_restore (cr);
2219
2220   shadow_type = GTK_SHADOW_OUT;
2221
2222   if (!sensitive)
2223     state = GTK_STATE_INSENSITIVE;
2224   else if (!touchscreen && priv->mouse_location == MOUSE_SLIDER)
2225     state = GTK_STATE_PRELIGHT;
2226   else
2227     state = GTK_STATE_NORMAL;
2228
2229   if (priv->grab_location == MOUSE_SLIDER)
2230     {
2231       state = GTK_STATE_ACTIVE;
2232       shadow_type = GTK_SHADOW_IN;
2233     }
2234
2235   cairo_save (cr);
2236   gdk_cairo_rectangle (cr, &priv->slider);
2237   cairo_clip (cr);
2238
2239     {
2240       gtk_paint_slider (style,
2241                         cr,
2242                         state,
2243                         shadow_type,
2244                         widget,
2245                         gtk_range_get_slider_detail (range),
2246                         priv->slider.x,
2247                         priv->slider.y,
2248                         priv->slider.width,
2249                         priv->slider.height,
2250                         priv->orientation);
2251     }
2252
2253   cairo_restore (cr);
2254
2255   if (priv->has_stepper_a)
2256     draw_stepper (range, STEPPER_A, cr,
2257                   priv->orientation == GTK_ORIENTATION_VERTICAL ? GTK_ARROW_UP : GTK_ARROW_LEFT,
2258                   priv->grab_location == MOUSE_STEPPER_A,
2259                   !touchscreen && priv->mouse_location == MOUSE_STEPPER_A);
2260
2261   if (priv->has_stepper_b)
2262     draw_stepper (range, STEPPER_B, cr,
2263                   priv->orientation == GTK_ORIENTATION_VERTICAL ? GTK_ARROW_DOWN : GTK_ARROW_RIGHT,
2264                   priv->grab_location == MOUSE_STEPPER_B,
2265                   !touchscreen && priv->mouse_location == MOUSE_STEPPER_B);
2266
2267   if (priv->has_stepper_c)
2268     draw_stepper (range, STEPPER_C, cr,
2269                   priv->orientation == GTK_ORIENTATION_VERTICAL ? GTK_ARROW_UP : GTK_ARROW_LEFT,
2270                   priv->grab_location == MOUSE_STEPPER_C,
2271                   !touchscreen && priv->mouse_location == MOUSE_STEPPER_C);
2272
2273   if (priv->has_stepper_d)
2274     draw_stepper (range, STEPPER_D, cr,
2275                   priv->orientation == GTK_ORIENTATION_VERTICAL ? GTK_ARROW_DOWN : GTK_ARROW_RIGHT,
2276                   priv->grab_location == MOUSE_STEPPER_D,
2277                   !touchscreen && priv->mouse_location == MOUSE_STEPPER_D);
2278
2279   return FALSE;
2280 }
2281
2282 static void
2283 range_grab_add (GtkRange      *range,
2284                 GdkDevice     *device,
2285                 MouseLocation  location,
2286                 gint           button)
2287 {
2288   GtkRangePrivate *priv = range->priv;
2289
2290   if (device == priv->grab_device)
2291     return;
2292
2293   if (priv->grab_device != NULL)
2294     {
2295       g_warning ("GtkRange already had a grab device, releasing device grab");
2296       gtk_device_grab_remove (GTK_WIDGET (range), priv->grab_device);
2297     }
2298
2299   /* we don't actually gdk_grab, since a button is down */
2300   gtk_device_grab_add (GTK_WIDGET (range), device, TRUE);
2301
2302   priv->grab_location = location;
2303   priv->grab_button = button;
2304   priv->grab_device = device;
2305
2306   if (gtk_range_update_mouse_location (range))
2307     gtk_widget_queue_draw (GTK_WIDGET (range));
2308 }
2309
2310 static void
2311 range_grab_remove (GtkRange *range)
2312 {
2313   GtkRangePrivate *priv = range->priv;
2314   MouseLocation location;
2315
2316   if (priv->grab_device)
2317     {
2318       gtk_device_grab_remove (GTK_WIDGET (range),
2319                               priv->grab_device);
2320       priv->grab_device = NULL;
2321     }
2322
2323   location = priv->grab_location;
2324   priv->grab_location = MOUSE_OUTSIDE;
2325   priv->grab_button = 0;
2326
2327   if (gtk_range_update_mouse_location (range) ||
2328       location != MOUSE_OUTSIDE)
2329     gtk_widget_queue_draw (GTK_WIDGET (range));
2330 }
2331
2332 static GtkScrollType
2333 range_get_scroll_for_grab (GtkRange      *range)
2334 {
2335   GtkRangePrivate *priv = range->priv;
2336   gboolean invert;
2337
2338   invert = should_invert (range);
2339   switch (priv->grab_location)
2340     {
2341       /* Backward stepper */
2342     case MOUSE_STEPPER_A:
2343     case MOUSE_STEPPER_C:
2344       switch (priv->grab_button)
2345         {
2346         case 1:
2347           return invert ? GTK_SCROLL_STEP_FORWARD : GTK_SCROLL_STEP_BACKWARD;
2348           break;
2349         case 2:
2350           return invert ? GTK_SCROLL_PAGE_FORWARD : GTK_SCROLL_PAGE_BACKWARD;
2351           break;
2352         case 3:
2353           return invert ? GTK_SCROLL_END : GTK_SCROLL_START;
2354           break;
2355         }
2356       break;
2357
2358       /* Forward stepper */
2359     case MOUSE_STEPPER_B:
2360     case MOUSE_STEPPER_D:
2361       switch (priv->grab_button)
2362         {
2363         case 1:
2364           return invert ? GTK_SCROLL_STEP_BACKWARD : GTK_SCROLL_STEP_FORWARD;
2365           break;
2366         case 2:
2367           return invert ? GTK_SCROLL_PAGE_BACKWARD : GTK_SCROLL_PAGE_FORWARD;
2368           break;
2369         case 3:
2370           return invert ? GTK_SCROLL_START : GTK_SCROLL_END;
2371           break;
2372        }
2373       break;
2374
2375       /* In the trough */
2376     case MOUSE_TROUGH:
2377       {
2378         if (priv->trough_click_forward)
2379           return GTK_SCROLL_PAGE_FORWARD;
2380         else
2381           return GTK_SCROLL_PAGE_BACKWARD;
2382       }
2383       break;
2384
2385     case MOUSE_OUTSIDE:
2386     case MOUSE_SLIDER:
2387     case MOUSE_WIDGET:
2388       break;
2389     }
2390
2391   return GTK_SCROLL_NONE;
2392 }
2393
2394 static gdouble
2395 coord_to_value (GtkRange *range,
2396                 gint      coord)
2397 {
2398   GtkRangePrivate *priv = range->priv;
2399   gdouble frac;
2400   gdouble value;
2401   gint    trough_length;
2402   gint    trough_start;
2403   gint    slider_length;
2404   gint    trough_border;
2405   gint    trough_under_steppers;
2406
2407   if (priv->orientation == GTK_ORIENTATION_VERTICAL)
2408     {
2409       trough_length = priv->trough.height;
2410       trough_start  = priv->trough.y;
2411       slider_length = priv->slider.height;
2412     }
2413   else
2414     {
2415       trough_length = priv->trough.width;
2416       trough_start  = priv->trough.x;
2417       slider_length = priv->slider.width;
2418     }
2419
2420   gtk_range_get_props (range, NULL, NULL, NULL, &trough_border, NULL,
2421                        &trough_under_steppers, NULL, NULL);
2422
2423   if (! trough_under_steppers)
2424     {
2425       trough_start += trough_border;
2426       trough_length -= 2 * trough_border;
2427     }
2428
2429   if (trough_length == slider_length)
2430     frac = 1.0;
2431   else
2432     frac = (MAX (0, coord - trough_start) /
2433             (gdouble) (trough_length - slider_length));
2434
2435   if (should_invert (range))
2436     frac = 1.0 - frac;
2437
2438   value = priv->adjustment->lower + frac * (priv->adjustment->upper -
2439                                             priv->adjustment->lower -
2440                                             priv->adjustment->page_size);
2441
2442   return value;
2443 }
2444
2445 static gboolean
2446 gtk_range_key_press (GtkWidget   *widget,
2447                      GdkEventKey *event)
2448 {
2449   GdkDevice *device;
2450   GtkRange *range = GTK_RANGE (widget);
2451   GtkRangePrivate *priv = range->priv;
2452
2453   device = gdk_event_get_device ((GdkEvent *) event);
2454   device = gdk_device_get_associated_device (device);
2455
2456   if (device == priv->grab_device &&
2457       event->keyval == GDK_KEY_Escape &&
2458       priv->grab_location != MOUSE_OUTSIDE)
2459     {
2460       stop_scrolling (range);
2461
2462       update_slider_position (range,
2463                               priv->slide_initial_coordinate,
2464                               priv->slide_initial_coordinate);
2465
2466       return TRUE;
2467     }
2468
2469   return GTK_WIDGET_CLASS (gtk_range_parent_class)->key_press_event (widget, event);
2470 }
2471
2472 static gint
2473 gtk_range_button_press (GtkWidget      *widget,
2474                         GdkEventButton *event)
2475 {
2476   GtkRange *range = GTK_RANGE (widget);
2477   GtkRangePrivate *priv = range->priv;
2478   GdkDevice *device;
2479
2480   if (!gtk_widget_has_focus (widget))
2481     gtk_widget_grab_focus (widget);
2482
2483   /* ignore presses when we're already doing something else. */
2484   if (priv->grab_location != MOUSE_OUTSIDE)
2485     return FALSE;
2486
2487   device = gdk_event_get_device ((GdkEvent *) event);
2488   priv->mouse_x = event->x;
2489   priv->mouse_y = event->y;
2490
2491   if (gtk_range_update_mouse_location (range))
2492     gtk_widget_queue_draw (widget);
2493
2494   if (priv->mouse_location == MOUSE_TROUGH  &&
2495       event->button == 1)
2496     {
2497       /* button 1 steps by page increment, as with button 2 on a stepper
2498        */
2499       GtkScrollType scroll;
2500       gdouble click_value;
2501
2502       click_value = coord_to_value (range,
2503                                     priv->orientation == GTK_ORIENTATION_VERTICAL ?
2504                                     event->y : event->x);
2505
2506       priv->trough_click_forward = click_value > priv->adjustment->value;
2507       range_grab_add (range, device, MOUSE_TROUGH, event->button);
2508
2509       scroll = range_get_scroll_for_grab (range);
2510
2511       gtk_range_add_step_timer (range, scroll);
2512
2513       return TRUE;
2514     }
2515   else if ((priv->mouse_location == MOUSE_STEPPER_A ||
2516             priv->mouse_location == MOUSE_STEPPER_B ||
2517             priv->mouse_location == MOUSE_STEPPER_C ||
2518             priv->mouse_location == MOUSE_STEPPER_D) &&
2519            (event->button == 1 || event->button == 2 || event->button == 3))
2520     {
2521       GtkAllocation allocation;
2522       GdkRectangle *stepper_area;
2523       GtkScrollType scroll;
2524
2525       range_grab_add (range, device, priv->mouse_location, event->button);
2526
2527       gtk_widget_get_allocation (widget, &allocation);
2528       stepper_area = get_area (range, priv->mouse_location);
2529
2530       gtk_widget_queue_draw_area (widget,
2531                                   allocation.x + stepper_area->x,
2532                                   allocation.y + stepper_area->y,
2533                                   stepper_area->width,
2534                                   stepper_area->height);
2535
2536       scroll = range_get_scroll_for_grab (range);
2537       if (scroll != GTK_SCROLL_NONE)
2538         gtk_range_add_step_timer (range, scroll);
2539
2540       return TRUE;
2541     }
2542   else if ((priv->mouse_location == MOUSE_TROUGH &&
2543             event->button == 2) ||
2544            priv->mouse_location == MOUSE_SLIDER)
2545     {
2546       gboolean need_value_update = FALSE;
2547
2548       /* Any button can be used to drag the slider, but you can start
2549        * dragging the slider with a trough click using button 2;
2550        * On button 2 press, we warp the slider to mouse position,
2551        * then begin the slider drag.
2552        */
2553       if (event->button == 2)
2554         {
2555           gdouble slider_low_value, slider_high_value, new_value;
2556
2557           slider_high_value =
2558             coord_to_value (range,
2559                             priv->orientation == GTK_ORIENTATION_VERTICAL ?
2560                             event->y : event->x);
2561           slider_low_value =
2562             coord_to_value (range,
2563                             priv->orientation == GTK_ORIENTATION_VERTICAL ?
2564                             event->y - priv->slider.height :
2565                             event->x - priv->slider.width);
2566
2567           /* compute new value for warped slider */
2568           new_value = slider_low_value + (slider_high_value - slider_low_value) / 2;
2569
2570           /* recalc slider, so we can set slide_initial_slider_position
2571            * properly
2572            */
2573           priv->need_recalc = TRUE;
2574           gtk_range_calc_layout (range, new_value);
2575
2576           /* defer adjustment updates to update_slider_position() in order
2577            * to keep pixel quantisation
2578            */
2579           need_value_update = TRUE;
2580         }
2581
2582       if (priv->orientation == GTK_ORIENTATION_VERTICAL)
2583         {
2584           priv->slide_initial_slider_position = priv->slider.y;
2585           priv->slide_initial_coordinate = event->y;
2586         }
2587       else
2588         {
2589           priv->slide_initial_slider_position = priv->slider.x;
2590           priv->slide_initial_coordinate = event->x;
2591         }
2592
2593       range_grab_add (range, device, MOUSE_SLIDER, event->button);
2594
2595       gtk_widget_queue_draw (widget);
2596
2597       if (need_value_update)
2598         update_slider_position (range, event->x, event->y);
2599
2600       return TRUE;
2601     }
2602
2603   return FALSE;
2604 }
2605
2606 /* During a slide, move the slider as required given new mouse position */
2607 static void
2608 update_slider_position (GtkRange *range,
2609                         gint      mouse_x,
2610                         gint      mouse_y)
2611 {
2612   GtkRangePrivate *priv = range->priv;
2613   gint delta;
2614   gint c;
2615   gdouble new_value;
2616   gboolean handled;
2617   gdouble next_value;
2618   gdouble mark_value;
2619   gdouble mark_delta;
2620   gint i;
2621
2622   if (priv->orientation == GTK_ORIENTATION_VERTICAL)
2623     delta = mouse_y - priv->slide_initial_coordinate;
2624   else
2625     delta = mouse_x - priv->slide_initial_coordinate;
2626
2627   c = priv->slide_initial_slider_position + delta;
2628
2629   new_value = coord_to_value (range, c);
2630   next_value = coord_to_value (range, c + 1);
2631   mark_delta = fabs (next_value - new_value);
2632
2633   for (i = 0; i < priv->n_marks; i++)
2634     {
2635       mark_value = priv->marks[i];
2636
2637       if (fabs (priv->adjustment->value - mark_value) < 3 * mark_delta)
2638         {
2639           if (fabs (new_value - mark_value) < (priv->slider_end - priv->slider_start) * 0.5 * mark_delta)
2640             {
2641               new_value = mark_value;
2642               break;
2643             }
2644         }
2645     }
2646
2647   g_signal_emit (range, signals[CHANGE_VALUE], 0, GTK_SCROLL_JUMP, new_value,
2648                  &handled);
2649 }
2650
2651 static void
2652 stop_scrolling (GtkRange *range)
2653 {
2654   range_grab_remove (range);
2655   gtk_range_remove_step_timer (range);
2656   /* Flush any pending discontinuous/delayed updates */
2657   gtk_range_update_value (range);
2658 }
2659
2660 static gboolean
2661 gtk_range_grab_broken (GtkWidget          *widget,
2662                        GdkEventGrabBroken *event)
2663 {
2664   GtkRange *range = GTK_RANGE (widget);
2665   GtkRangePrivate *priv = range->priv;
2666   GdkDevice *device;
2667
2668   device = gdk_event_get_device ((GdkEvent *) event);
2669
2670   if (device == priv->grab_device &&
2671       priv->grab_location != MOUSE_OUTSIDE)
2672     {
2673       if (priv->grab_location == MOUSE_SLIDER)
2674         update_slider_position (range, priv->mouse_x, priv->mouse_y);
2675
2676       stop_scrolling (range);
2677
2678       return TRUE;
2679     }
2680
2681   return FALSE;
2682 }
2683
2684 static gint
2685 gtk_range_button_release (GtkWidget      *widget,
2686                           GdkEventButton *event)
2687 {
2688   GtkRange *range = GTK_RANGE (widget);
2689   GtkRangePrivate *priv = range->priv;
2690   GdkDevice *device;
2691
2692   if (event->window == priv->event_window)
2693     {
2694       priv->mouse_x = event->x;
2695       priv->mouse_y = event->y;
2696     }
2697   else
2698     {
2699       gdk_window_get_device_position (priv->event_window,
2700                                       event->device,
2701                                       &priv->mouse_x,
2702                                       &priv->mouse_y,
2703                                       NULL);
2704     }
2705
2706   device = gdk_event_get_device ((GdkEvent *) event);
2707
2708   if (priv->grab_device == device &&
2709       priv->grab_button == event->button)
2710     {
2711       if (priv->grab_location == MOUSE_SLIDER)
2712         update_slider_position (range, priv->mouse_x, priv->mouse_y);
2713
2714       stop_scrolling (range);
2715
2716       return TRUE;
2717     }
2718
2719   return FALSE;
2720 }
2721
2722 /**
2723  * _gtk_range_get_wheel_delta:
2724  * @range: a #GtkRange
2725  * @direction: A #GdkScrollDirection
2726  *
2727  * Returns a good step value for the mouse wheel.
2728  *
2729  * Return value: A good step value for the mouse wheel.
2730  *
2731  * Since: 2.4
2732  **/
2733 gdouble
2734 _gtk_range_get_wheel_delta (GtkRange           *range,
2735                             GdkScrollDirection  direction)
2736 {
2737   GtkRangePrivate *priv = range->priv;
2738   GtkAdjustment *adj = priv->adjustment;
2739   gdouble delta;
2740
2741   if (GTK_IS_SCROLLBAR (range))
2742     delta = pow (adj->page_size, 2.0 / 3.0);
2743   else
2744     delta = adj->step_increment * 2;
2745
2746   if (direction == GDK_SCROLL_UP ||
2747       direction == GDK_SCROLL_LEFT)
2748     delta = - delta;
2749
2750   if (priv->inverted)
2751     delta = - delta;
2752
2753   return delta;
2754 }
2755
2756 static gboolean
2757 gtk_range_scroll_event (GtkWidget      *widget,
2758                         GdkEventScroll *event)
2759 {
2760   GtkRange *range = GTK_RANGE (widget);
2761   GtkRangePrivate *priv = range->priv;
2762
2763   if (gtk_widget_get_realized (widget))
2764     {
2765       GtkAdjustment *adj = priv->adjustment;
2766       gdouble delta;
2767       gboolean handled;
2768
2769       delta = _gtk_range_get_wheel_delta (range, event->direction);
2770
2771       g_signal_emit (range, signals[CHANGE_VALUE], 0,
2772                      GTK_SCROLL_JUMP, adj->value + delta,
2773                      &handled);
2774
2775       /* Policy DELAYED makes sense with scroll events,
2776        * but DISCONTINUOUS doesn't, so we update immediately
2777        * for DISCONTINUOUS
2778        */
2779       if (priv->update_policy == GTK_UPDATE_DISCONTINUOUS)
2780         gtk_range_update_value (range);
2781     }
2782
2783   return TRUE;
2784 }
2785
2786 static gboolean
2787 gtk_range_motion_notify (GtkWidget      *widget,
2788                          GdkEventMotion *event)
2789 {
2790   GtkRange *range = GTK_RANGE (widget);
2791   GtkRangePrivate *priv = range->priv;
2792
2793   gdk_event_request_motions (event);
2794
2795   priv->mouse_x = event->x;
2796   priv->mouse_y = event->y;
2797
2798   if (gtk_range_update_mouse_location (range))
2799     gtk_widget_queue_draw (widget);
2800
2801   if (priv->grab_location == MOUSE_SLIDER)
2802     update_slider_position (range, event->x, event->y);
2803
2804   /* We handled the event if the mouse was in the range_rect */
2805   return priv->mouse_location != MOUSE_OUTSIDE;
2806 }
2807
2808 static gboolean
2809 gtk_range_enter_notify (GtkWidget        *widget,
2810                         GdkEventCrossing *event)
2811 {
2812   GtkRange *range = GTK_RANGE (widget);
2813   GtkRangePrivate *priv = range->priv;
2814
2815   priv->mouse_x = event->x;
2816   priv->mouse_y = event->y;
2817
2818   if (gtk_range_update_mouse_location (range))
2819     gtk_widget_queue_draw (widget);
2820
2821   return TRUE;
2822 }
2823
2824 static gboolean
2825 gtk_range_leave_notify (GtkWidget        *widget,
2826                         GdkEventCrossing *event)
2827 {
2828   GtkRange *range = GTK_RANGE (widget);
2829   GtkRangePrivate *priv = range->priv;
2830
2831   priv->mouse_x = -1;
2832   priv->mouse_y = -1;
2833
2834   if (gtk_range_update_mouse_location (range))
2835     gtk_widget_queue_draw (widget);
2836
2837   return TRUE;
2838 }
2839
2840 static void
2841 gtk_range_grab_notify (GtkWidget *widget,
2842                        gboolean   was_grabbed)
2843 {
2844   GtkRangePrivate *priv = GTK_RANGE (widget)->priv;
2845
2846   if (priv->grab_device &&
2847       gtk_widget_device_is_shadowed (widget, priv->grab_device))
2848     stop_scrolling (GTK_RANGE (widget));
2849 }
2850
2851 static void
2852 gtk_range_state_changed (GtkWidget    *widget,
2853                          GtkStateType  previous_state)
2854 {
2855   if (!gtk_widget_is_sensitive (widget))
2856     stop_scrolling (GTK_RANGE (widget));
2857 }
2858
2859 #define check_rectangle(rectangle1, rectangle2)              \
2860   {                                                          \
2861     if (rectangle1.x != rectangle2.x) return TRUE;           \
2862     if (rectangle1.y != rectangle2.y) return TRUE;           \
2863     if (rectangle1.width  != rectangle2.width)  return TRUE; \
2864     if (rectangle1.height != rectangle2.height) return TRUE; \
2865   }
2866
2867 static gboolean
2868 layout_changed (GtkRangePrivate *priv1,
2869                 GtkRangePrivate *priv2)
2870 {
2871   check_rectangle (priv1->slider, priv2->slider);
2872   check_rectangle (priv1->trough, priv2->trough);
2873   check_rectangle (priv1->stepper_a, priv2->stepper_a);
2874   check_rectangle (priv1->stepper_d, priv2->stepper_d);
2875   check_rectangle (priv1->stepper_b, priv2->stepper_b);
2876   check_rectangle (priv1->stepper_c, priv2->stepper_c);
2877
2878   if (priv1->upper_sensitive != priv2->upper_sensitive) return TRUE;
2879   if (priv1->lower_sensitive != priv2->lower_sensitive) return TRUE;
2880
2881   return FALSE;
2882 }
2883
2884 static void
2885 gtk_range_adjustment_changed (GtkAdjustment *adjustment,
2886                               gpointer       data)
2887 {
2888   GtkRange *range = GTK_RANGE (data);
2889   GtkRangePrivate *priv = range->priv;
2890   GtkRangePrivate priv_aux = *priv;
2891
2892   priv->recalc_marks = TRUE;
2893   priv->need_recalc = TRUE;
2894   gtk_range_calc_layout (range, priv->adjustment->value);
2895
2896   /* now check whether the layout changed  */
2897   if (layout_changed (priv, &priv_aux))
2898     gtk_widget_queue_draw (GTK_WIDGET (range));
2899
2900   /* Note that we don't round off to priv->round_digits here.
2901    * that's because it's really broken to change a value
2902    * in response to a change signal on that value; round_digits
2903    * is therefore defined to be a filter on what the GtkRange
2904    * can input into the adjustment, not a filter that the GtkRange
2905    * will enforce on the adjustment.
2906    */
2907 }
2908
2909 static gboolean
2910 force_repaint (gpointer data)
2911 {
2912   GtkRange *range = GTK_RANGE (data);
2913   GtkRangePrivate *priv = range->priv;
2914   GtkWidget *widget = GTK_WIDGET (range);
2915
2916   priv->repaint_id = 0;
2917   if (gtk_widget_is_drawable (widget))
2918     gdk_window_process_updates (gtk_widget_get_window (widget), FALSE);
2919
2920   return FALSE;
2921 }
2922
2923 static void
2924 gtk_range_adjustment_value_changed (GtkAdjustment *adjustment,
2925                                     gpointer       data)
2926 {
2927   GtkRange *range = GTK_RANGE (data);
2928   GtkRangePrivate *priv = range->priv;
2929   GtkRangePrivate priv_aux = *priv;
2930
2931   priv->need_recalc = TRUE;
2932   gtk_range_calc_layout (range, priv->adjustment->value);
2933
2934   /* now check whether the layout changed  */
2935   if (layout_changed (priv, &priv_aux) ||
2936       (GTK_IS_SCALE (range) && gtk_scale_get_draw_value (GTK_SCALE (range))))
2937     {
2938       gtk_widget_queue_draw (GTK_WIDGET (range));
2939       /* setup a timer to ensure the range isn't lagging too much behind the scroll position */
2940       if (!priv->repaint_id)
2941         priv->repaint_id = gdk_threads_add_timeout_full (GDK_PRIORITY_EVENTS, 181, force_repaint, range, NULL);
2942     }
2943
2944   /* Note that we don't round off to priv->round_digits here.
2945    * that's because it's really broken to change a value
2946    * in response to a change signal on that value; round_digits
2947    * is therefore defined to be a filter on what the GtkRange
2948    * can input into the adjustment, not a filter that the GtkRange
2949    * will enforce on the adjustment.
2950    */
2951
2952   g_signal_emit (range, signals[VALUE_CHANGED], 0);
2953 }
2954
2955 static void
2956 gtk_range_style_set (GtkWidget *widget,
2957                      GtkStyle  *previous_style)
2958 {
2959   GtkRange *range = GTK_RANGE (widget);
2960   GtkRangePrivate *priv = range->priv;
2961
2962   priv->need_recalc = TRUE;
2963
2964   GTK_WIDGET_CLASS (gtk_range_parent_class)->style_set (widget, previous_style);
2965 }
2966
2967 static void
2968 apply_marks (GtkRange *range,
2969              gdouble   oldval,
2970              gdouble  *newval)
2971 {
2972   GtkRangePrivate *priv = range->priv;
2973   gint i;
2974   gdouble mark;
2975
2976   for (i = 0; i < priv->n_marks; i++)
2977     {
2978       mark = priv->marks[i];
2979       if ((oldval < mark && mark < *newval) ||
2980           (oldval > mark && mark > *newval))
2981         {
2982           *newval = mark;
2983           return;
2984         }
2985     }
2986 }
2987
2988 static void
2989 step_back (GtkRange *range)
2990 {
2991   GtkRangePrivate *priv = range->priv;
2992   gdouble newval;
2993   gboolean handled;
2994
2995   newval = priv->adjustment->value - priv->adjustment->step_increment;
2996   apply_marks (range, priv->adjustment->value, &newval);
2997   g_signal_emit (range, signals[CHANGE_VALUE], 0,
2998                  GTK_SCROLL_STEP_BACKWARD, newval, &handled);
2999 }
3000
3001 static void
3002 step_forward (GtkRange *range)
3003 {
3004   GtkRangePrivate *priv = range->priv;
3005   gdouble newval;
3006   gboolean handled;
3007
3008   newval = priv->adjustment->value + priv->adjustment->step_increment;
3009   apply_marks (range, priv->adjustment->value, &newval);
3010   g_signal_emit (range, signals[CHANGE_VALUE], 0,
3011                  GTK_SCROLL_STEP_FORWARD, newval, &handled);
3012 }
3013
3014
3015 static void
3016 page_back (GtkRange *range)
3017 {
3018   GtkRangePrivate *priv = range->priv;
3019   gdouble newval;
3020   gboolean handled;
3021
3022   newval = priv->adjustment->value - priv->adjustment->page_increment;
3023   apply_marks (range, priv->adjustment->value, &newval);
3024   g_signal_emit (range, signals[CHANGE_VALUE], 0,
3025                  GTK_SCROLL_PAGE_BACKWARD, newval, &handled);
3026 }
3027
3028 static void
3029 page_forward (GtkRange *range)
3030 {
3031   GtkRangePrivate *priv = range->priv;
3032   gdouble newval;
3033   gboolean handled;
3034
3035   newval = priv->adjustment->value + priv->adjustment->page_increment;
3036   apply_marks (range, priv->adjustment->value, &newval);
3037   g_signal_emit (range, signals[CHANGE_VALUE], 0,
3038                  GTK_SCROLL_PAGE_FORWARD, newval, &handled);
3039 }
3040
3041 static void
3042 scroll_begin (GtkRange *range)
3043 {
3044   GtkRangePrivate *priv = range->priv;
3045   gboolean handled;
3046
3047   g_signal_emit (range, signals[CHANGE_VALUE], 0,
3048                  GTK_SCROLL_START, priv->adjustment->lower,
3049                  &handled);
3050 }
3051
3052 static void
3053 scroll_end (GtkRange *range)
3054 {
3055   GtkRangePrivate *priv = range->priv;
3056   gdouble newval;
3057   gboolean handled;
3058
3059   newval = priv->adjustment->upper - priv->adjustment->page_size;
3060   g_signal_emit (range, signals[CHANGE_VALUE], 0, GTK_SCROLL_END, newval,
3061                  &handled);
3062 }
3063
3064 static gboolean
3065 gtk_range_scroll (GtkRange     *range,
3066                   GtkScrollType scroll)
3067 {
3068   GtkRangePrivate *priv = range->priv;
3069   gdouble old_value = priv->adjustment->value;
3070
3071   switch (scroll)
3072     {
3073     case GTK_SCROLL_STEP_LEFT:
3074       if (should_invert (range))
3075         step_forward (range);
3076       else
3077         step_back (range);
3078       break;
3079
3080     case GTK_SCROLL_STEP_UP:
3081       if (should_invert (range))
3082         step_forward (range);
3083       else
3084         step_back (range);
3085       break;
3086
3087     case GTK_SCROLL_STEP_RIGHT:
3088       if (should_invert (range))
3089         step_back (range);
3090       else
3091         step_forward (range);
3092       break;
3093
3094     case GTK_SCROLL_STEP_DOWN:
3095       if (should_invert (range))
3096         step_back (range);
3097       else
3098         step_forward (range);
3099       break;
3100
3101     case GTK_SCROLL_STEP_BACKWARD:
3102       step_back (range);
3103       break;
3104
3105     case GTK_SCROLL_STEP_FORWARD:
3106       step_forward (range);
3107       break;
3108
3109     case GTK_SCROLL_PAGE_LEFT:
3110       if (should_invert (range))
3111         page_forward (range);
3112       else
3113         page_back (range);
3114       break;
3115
3116     case GTK_SCROLL_PAGE_UP:
3117       if (should_invert (range))
3118         page_forward (range);
3119       else
3120         page_back (range);
3121       break;
3122
3123     case GTK_SCROLL_PAGE_RIGHT:
3124       if (should_invert (range))
3125         page_back (range);
3126       else
3127         page_forward (range);
3128       break;
3129
3130     case GTK_SCROLL_PAGE_DOWN:
3131       if (should_invert (range))
3132         page_back (range);
3133       else
3134         page_forward (range);
3135       break;
3136
3137     case GTK_SCROLL_PAGE_BACKWARD:
3138       page_back (range);
3139       break;
3140
3141     case GTK_SCROLL_PAGE_FORWARD:
3142       page_forward (range);
3143       break;
3144
3145     case GTK_SCROLL_START:
3146       scroll_begin (range);
3147       break;
3148
3149     case GTK_SCROLL_END:
3150       scroll_end (range);
3151       break;
3152
3153     case GTK_SCROLL_JUMP:
3154       /* Used by CList, range doesn't use it. */
3155       break;
3156
3157     case GTK_SCROLL_NONE:
3158       break;
3159     }
3160
3161   return priv->adjustment->value != old_value;
3162 }
3163
3164 static void
3165 gtk_range_move_slider (GtkRange     *range,
3166                        GtkScrollType scroll)
3167 {
3168   GtkRangePrivate *priv = range->priv;
3169   gboolean cursor_only;
3170
3171   g_object_get (gtk_widget_get_settings (GTK_WIDGET (range)),
3172                 "gtk-keynav-cursor-only", &cursor_only,
3173                 NULL);
3174
3175   if (cursor_only)
3176     {
3177       GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (range));
3178
3179       if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
3180         {
3181           if (scroll == GTK_SCROLL_STEP_UP ||
3182               scroll == GTK_SCROLL_STEP_DOWN)
3183             {
3184               if (toplevel)
3185                 gtk_widget_child_focus (toplevel,
3186                                         scroll == GTK_SCROLL_STEP_UP ?
3187                                         GTK_DIR_UP : GTK_DIR_DOWN);
3188               return;
3189             }
3190         }
3191       else
3192         {
3193           if (scroll == GTK_SCROLL_STEP_LEFT ||
3194               scroll == GTK_SCROLL_STEP_RIGHT)
3195             {
3196               if (toplevel)
3197                 gtk_widget_child_focus (toplevel,
3198                                         scroll == GTK_SCROLL_STEP_LEFT ?
3199                                         GTK_DIR_LEFT : GTK_DIR_RIGHT);
3200               return;
3201             }
3202         }
3203     }
3204
3205   if (! gtk_range_scroll (range, scroll))
3206     gtk_widget_error_bell (GTK_WIDGET (range));
3207
3208   /* Policy DELAYED makes sense with key events,
3209    * but DISCONTINUOUS doesn't, so we update immediately
3210    * for DISCONTINUOUS
3211    */
3212   if (priv->update_policy == GTK_UPDATE_DISCONTINUOUS)
3213     gtk_range_update_value (range);
3214 }
3215
3216 static void
3217 gtk_range_get_props (GtkRange  *range,
3218                      gint      *slider_width,
3219                      gint      *stepper_size,
3220                      gint      *focus_width,
3221                      gint      *trough_border,
3222                      gint      *stepper_spacing,
3223                      gboolean  *trough_under_steppers,
3224                      gint      *arrow_displacement_x,
3225                      gint      *arrow_displacement_y)
3226 {
3227   GtkWidget *widget =  GTK_WIDGET (range);
3228   gint tmp_slider_width, tmp_stepper_size, tmp_focus_width, tmp_trough_border;
3229   gint tmp_stepper_spacing, tmp_trough_under_steppers;
3230   gint tmp_arrow_displacement_x, tmp_arrow_displacement_y;
3231
3232   gtk_widget_style_get (widget,
3233                         "slider-width", &tmp_slider_width,
3234                         "trough-border", &tmp_trough_border,
3235                         "stepper-size", &tmp_stepper_size,
3236                         "stepper-spacing", &tmp_stepper_spacing,
3237                         "trough-under-steppers", &tmp_trough_under_steppers,
3238                         "arrow-displacement-x", &tmp_arrow_displacement_x,
3239                         "arrow-displacement-y", &tmp_arrow_displacement_y,
3240                         NULL);
3241
3242   if (tmp_stepper_spacing > 0)
3243     tmp_trough_under_steppers = FALSE;
3244
3245   if (gtk_widget_get_can_focus (GTK_WIDGET (range)))
3246     {
3247       gint focus_line_width;
3248       gint focus_padding;
3249
3250       gtk_widget_style_get (GTK_WIDGET (range),
3251                             "focus-line-width", &focus_line_width,
3252                             "focus-padding", &focus_padding,
3253                             NULL);
3254
3255       tmp_focus_width = focus_line_width + focus_padding;
3256     }
3257   else
3258     {
3259       tmp_focus_width = 0;
3260     }
3261
3262   if (slider_width)
3263     *slider_width = tmp_slider_width;
3264
3265   if (focus_width)
3266     *focus_width = tmp_focus_width;
3267
3268   if (trough_border)
3269     *trough_border = tmp_trough_border;
3270
3271   if (stepper_size)
3272     *stepper_size = tmp_stepper_size;
3273
3274   if (stepper_spacing)
3275     *stepper_spacing = tmp_stepper_spacing;
3276
3277   if (trough_under_steppers)
3278     *trough_under_steppers = tmp_trough_under_steppers;
3279
3280   if (arrow_displacement_x)
3281     *arrow_displacement_x = tmp_arrow_displacement_x;
3282
3283   if (arrow_displacement_y)
3284     *arrow_displacement_y = tmp_arrow_displacement_y;
3285 }
3286
3287 #define POINT_IN_RECT(xcoord, ycoord, rect) \
3288  ((xcoord) >= (rect).x &&                   \
3289   (xcoord) <  ((rect).x + (rect).width) &&  \
3290   (ycoord) >= (rect).y &&                   \
3291   (ycoord) <  ((rect).y + (rect).height))
3292
3293 /* Update mouse location, return TRUE if it changes */
3294 static gboolean
3295 gtk_range_update_mouse_location (GtkRange *range)
3296 {
3297   GtkRangePrivate *priv = range->priv;
3298   GtkAllocation allocation;
3299   gint x, y;
3300   MouseLocation old;
3301   GtkWidget *widget = GTK_WIDGET (range);
3302
3303   old = priv->mouse_location;
3304
3305   x = priv->mouse_x;
3306   y = priv->mouse_y;
3307
3308   gtk_widget_get_allocation (widget, &allocation);
3309
3310   if (priv->grab_location != MOUSE_OUTSIDE)
3311     priv->mouse_location = priv->grab_location;
3312   else if (POINT_IN_RECT (x, y, priv->stepper_a))
3313     priv->mouse_location = MOUSE_STEPPER_A;
3314   else if (POINT_IN_RECT (x, y, priv->stepper_b))
3315     priv->mouse_location = MOUSE_STEPPER_B;
3316   else if (POINT_IN_RECT (x, y, priv->stepper_c))
3317     priv->mouse_location = MOUSE_STEPPER_C;
3318   else if (POINT_IN_RECT (x, y, priv->stepper_d))
3319     priv->mouse_location = MOUSE_STEPPER_D;
3320   else if (POINT_IN_RECT (x, y, priv->slider))
3321     priv->mouse_location = MOUSE_SLIDER;
3322   else if (POINT_IN_RECT (x, y, priv->trough))
3323     priv->mouse_location = MOUSE_TROUGH;
3324   else if (POINT_IN_RECT (x, y, allocation))
3325     priv->mouse_location = MOUSE_WIDGET;
3326   else
3327     priv->mouse_location = MOUSE_OUTSIDE;
3328
3329   return old != priv->mouse_location;
3330 }
3331
3332 /* Clamp rect, border inside widget->allocation, such that we prefer
3333  * to take space from border not rect in all directions, and prefer to
3334  * give space to border over rect in one direction.
3335  */
3336 static void
3337 clamp_dimensions (GtkWidget    *widget,
3338                   GdkRectangle *rect,
3339                   GtkBorder    *border,
3340                   gboolean      border_expands_horizontally)
3341 {
3342   GtkAllocation allocation;
3343   gint extra, shortage;
3344
3345   g_return_if_fail (rect->x == 0);
3346   g_return_if_fail (rect->y == 0);
3347   g_return_if_fail (rect->width >= 0);
3348   g_return_if_fail (rect->height >= 0);
3349
3350   gtk_widget_get_allocation (widget, &allocation);
3351
3352   /* Width */
3353
3354   extra = allocation.width - border->left - border->right - rect->width;
3355   if (extra > 0)
3356     {
3357       if (border_expands_horizontally)
3358         {
3359           border->left += extra / 2;
3360           border->right += extra / 2 + extra % 2;
3361         }
3362       else
3363         {
3364           rect->width += extra;
3365         }
3366     }
3367
3368   /* See if we can fit rect, if not kill the border */
3369   shortage = rect->width - allocation.width;
3370   if (shortage > 0)
3371     {
3372       rect->width = allocation.width;
3373       /* lose the border */
3374       border->left = 0;
3375       border->right = 0;
3376     }
3377   else
3378     {
3379       /* See if we can fit rect with borders */
3380       shortage = rect->width + border->left + border->right - allocation.width;
3381       if (shortage > 0)
3382         {
3383           /* Shrink borders */
3384           border->left -= shortage / 2;
3385           border->right -= shortage / 2 + shortage % 2;
3386         }
3387     }
3388
3389   /* Height */
3390
3391   extra = allocation.height - border->top - border->bottom - rect->height;
3392   if (extra > 0)
3393     {
3394       if (border_expands_horizontally)
3395         {
3396           /* don't expand border vertically */
3397           rect->height += extra;
3398         }
3399       else
3400         {
3401           border->top += extra / 2;
3402           border->bottom += extra / 2 + extra % 2;
3403         }
3404     }
3405
3406   /* See if we can fit rect, if not kill the border */
3407   shortage = rect->height - allocation.height;
3408   if (shortage > 0)
3409     {
3410       rect->height = allocation.height;
3411       /* lose the border */
3412       border->top = 0;
3413       border->bottom = 0;
3414     }
3415   else
3416     {
3417       /* See if we can fit rect with borders */
3418       shortage = rect->height + border->top + border->bottom - allocation.height;
3419       if (shortage > 0)
3420         {
3421           /* Shrink borders */
3422           border->top -= shortage / 2;
3423           border->bottom -= shortage / 2 + shortage % 2;
3424         }
3425     }
3426 }
3427
3428 static void
3429 gtk_range_calc_request (GtkRange      *range,
3430                         gint           slider_width,
3431                         gint           stepper_size,
3432                         gint           focus_width,
3433                         gint           trough_border,
3434                         gint           stepper_spacing,
3435                         GdkRectangle  *range_rect,
3436                         GtkBorder     *border,
3437                         gint          *n_steppers_p,
3438                         gboolean      *has_steppers_ab,
3439                         gboolean      *has_steppers_cd,
3440                         gint          *slider_length_p)
3441 {
3442   GtkRangePrivate *priv = range->priv;
3443   gint slider_length;
3444   gint n_steppers;
3445   gint n_steppers_ab;
3446   gint n_steppers_cd;
3447
3448   border->left = 0;
3449   border->right = 0;
3450   border->top = 0;
3451   border->bottom = 0;
3452
3453   if (GTK_RANGE_GET_CLASS (range)->get_range_border)
3454     GTK_RANGE_GET_CLASS (range)->get_range_border (range, border);
3455
3456   n_steppers_ab = 0;
3457   n_steppers_cd = 0;
3458
3459   if (priv->has_stepper_a)
3460     n_steppers_ab += 1;
3461   if (priv->has_stepper_b)
3462     n_steppers_ab += 1;
3463   if (priv->has_stepper_c)
3464     n_steppers_cd += 1;
3465   if (priv->has_stepper_d)
3466     n_steppers_cd += 1;
3467
3468   n_steppers = n_steppers_ab + n_steppers_cd;
3469
3470   slider_length = priv->min_slider_size;
3471
3472   range_rect->x = 0;
3473   range_rect->y = 0;
3474
3475   /* We never expand to fill available space in the small dimension
3476    * (i.e. vertical scrollbars are always a fixed width)
3477    */
3478   if (priv->orientation == GTK_ORIENTATION_VERTICAL)
3479     {
3480       range_rect->width = (focus_width + trough_border) * 2 + slider_width;
3481       range_rect->height = stepper_size * n_steppers + (focus_width + trough_border) * 2 + slider_length;
3482
3483       if (n_steppers_ab > 0)
3484         range_rect->height += stepper_spacing;
3485
3486       if (n_steppers_cd > 0)
3487         range_rect->height += stepper_spacing;
3488     }
3489   else
3490     {
3491       range_rect->width = stepper_size * n_steppers + (focus_width + trough_border) * 2 + slider_length;
3492       range_rect->height = (focus_width + trough_border) * 2 + slider_width;
3493
3494       if (n_steppers_ab > 0)
3495         range_rect->width += stepper_spacing;
3496
3497       if (n_steppers_cd > 0)
3498         range_rect->width += stepper_spacing;
3499     }
3500
3501   if (n_steppers_p)
3502     *n_steppers_p = n_steppers;
3503
3504   if (has_steppers_ab)
3505     *has_steppers_ab = (n_steppers_ab > 0);
3506
3507   if (has_steppers_cd)
3508     *has_steppers_cd = (n_steppers_cd > 0);
3509
3510   if (slider_length_p)
3511     *slider_length_p = slider_length;
3512 }
3513
3514 static void
3515 gtk_range_calc_layout (GtkRange *range,
3516                        gdouble   adjustment_value)
3517 {
3518   GtkRangePrivate *priv = range->priv;
3519   gint slider_width, stepper_size, focus_width, trough_border, stepper_spacing;
3520   gint slider_length;
3521   GtkBorder border;
3522   gint n_steppers;
3523   gboolean has_steppers_ab;
3524   gboolean has_steppers_cd;
3525   gboolean trough_under_steppers;
3526   GdkRectangle range_rect;
3527   GtkWidget *widget;
3528
3529   if (!priv->need_recalc)
3530     return;
3531
3532   /* If we have a too-small allocation, we prefer the steppers over
3533    * the trough/slider, probably the steppers are a more useful
3534    * feature in small spaces.
3535    *
3536    * Also, we prefer to draw the range itself rather than the border
3537    * areas if there's a conflict, since the borders will be decoration
3538    * not controls. Though this depends on subclasses cooperating by
3539    * not drawing on priv->range_rect.
3540    */
3541
3542   widget = GTK_WIDGET (range);
3543
3544   gtk_range_get_props (range,
3545                        &slider_width, &stepper_size,
3546                        &focus_width, &trough_border,
3547                        &stepper_spacing, &trough_under_steppers,
3548                        NULL, NULL);
3549
3550   gtk_range_calc_request (range,
3551                           slider_width, stepper_size,
3552                           focus_width, trough_border, stepper_spacing,
3553                           &range_rect, &border, &n_steppers,
3554                           &has_steppers_ab, &has_steppers_cd, &slider_length);
3555
3556   /* We never expand to fill available space in the small dimension
3557    * (i.e. vertical scrollbars are always a fixed width)
3558    */
3559   if (priv->orientation == GTK_ORIENTATION_VERTICAL)
3560     {
3561       clamp_dimensions (widget, &range_rect, &border, TRUE);
3562     }
3563   else
3564     {
3565       clamp_dimensions (widget, &range_rect, &border, FALSE);
3566     }
3567
3568   range_rect.x = border.left;
3569   range_rect.y = border.top;
3570
3571   priv->range_rect = range_rect;
3572
3573   if (priv->orientation == GTK_ORIENTATION_VERTICAL)
3574     {
3575       gint stepper_width, stepper_height;
3576
3577       /* Steppers are the width of the range, and stepper_size in
3578        * height, or if we don't have enough height, divided equally
3579        * among available space.
3580        */
3581       stepper_width = range_rect.width - focus_width * 2;
3582
3583       if (trough_under_steppers)
3584         stepper_width -= trough_border * 2;
3585
3586       if (stepper_width < 1)
3587         stepper_width = range_rect.width; /* screw the trough border */
3588
3589       if (n_steppers == 0)
3590         stepper_height = 0; /* avoid divide by n_steppers */
3591       else
3592         stepper_height = MIN (stepper_size, (range_rect.height / n_steppers));
3593
3594       /* Stepper A */
3595
3596       priv->stepper_a.x = range_rect.x + focus_width + trough_border * trough_under_steppers;
3597       priv->stepper_a.y = range_rect.y + focus_width + trough_border * trough_under_steppers;
3598
3599       if (priv->has_stepper_a)
3600         {
3601           priv->stepper_a.width = stepper_width;
3602           priv->stepper_a.height = stepper_height;
3603         }
3604       else
3605         {
3606           priv->stepper_a.width = 0;
3607           priv->stepper_a.height = 0;
3608         }
3609
3610       /* Stepper B */
3611
3612       priv->stepper_b.x = priv->stepper_a.x;
3613       priv->stepper_b.y = priv->stepper_a.y + priv->stepper_a.height;
3614
3615       if (priv->has_stepper_b)
3616         {
3617           priv->stepper_b.width = stepper_width;
3618           priv->stepper_b.height = stepper_height;
3619         }
3620       else
3621         {
3622           priv->stepper_b.width = 0;
3623           priv->stepper_b.height = 0;
3624         }
3625
3626       /* Stepper D */
3627
3628       if (priv->has_stepper_d)
3629         {
3630           priv->stepper_d.width = stepper_width;
3631           priv->stepper_d.height = stepper_height;
3632         }
3633       else
3634         {
3635           priv->stepper_d.width = 0;
3636           priv->stepper_d.height = 0;
3637         }
3638
3639       priv->stepper_d.x = priv->stepper_a.x;
3640       priv->stepper_d.y = range_rect.y + range_rect.height - priv->stepper_d.height - focus_width - trough_border * trough_under_steppers;
3641
3642       /* Stepper C */
3643
3644       if (priv->has_stepper_c)
3645         {
3646           priv->stepper_c.width = stepper_width;
3647           priv->stepper_c.height = stepper_height;
3648         }
3649       else
3650         {
3651           priv->stepper_c.width = 0;
3652           priv->stepper_c.height = 0;
3653         }
3654
3655       priv->stepper_c.x = priv->stepper_a.x;
3656       priv->stepper_c.y = priv->stepper_d.y - priv->stepper_c.height;
3657
3658       /* Now the trough is the remaining space between steppers B and C,
3659        * if any, minus spacing
3660        */
3661       priv->trough.x = range_rect.x;
3662       priv->trough.y = priv->stepper_b.y + priv->stepper_b.height + stepper_spacing * has_steppers_ab;
3663       priv->trough.width = range_rect.width;
3664       priv->trough.height = priv->stepper_c.y - priv->trough.y - stepper_spacing * has_steppers_cd;
3665
3666       /* Slider fits into the trough, with stepper_spacing on either side,
3667        * and the size/position based on the adjustment or fixed, depending.
3668        */
3669       priv->slider.x = priv->trough.x + focus_width + trough_border;
3670       priv->slider.width = priv->trough.width - (focus_width + trough_border) * 2;
3671
3672       /* Compute slider position/length */
3673       {
3674         gint y, bottom, top, height;
3675
3676         top = priv->trough.y;
3677         bottom = priv->trough.y + priv->trough.height;
3678
3679         if (! trough_under_steppers)
3680           {
3681             top += trough_border;
3682             bottom -= trough_border;
3683           }
3684
3685         /* slider height is the fraction (page_size /
3686          * total_adjustment_range) times the trough height in pixels
3687          */
3688
3689         if (priv->adjustment->upper - priv->adjustment->lower != 0)
3690           height = ((bottom - top) * (priv->adjustment->page_size /
3691                                        (priv->adjustment->upper - priv->adjustment->lower)));
3692         else
3693           height = priv->min_slider_size;
3694
3695         if (height < priv->min_slider_size ||
3696             priv->slider_size_fixed)
3697           height = priv->min_slider_size;
3698
3699         height = MIN (height, priv->trough.height);
3700
3701         y = top;
3702
3703         if (priv->adjustment->upper - priv->adjustment->lower - priv->adjustment->page_size != 0)
3704           y += (bottom - top - height) * ((adjustment_value - priv->adjustment->lower) /
3705                                           (priv->adjustment->upper - priv->adjustment->lower - priv->adjustment->page_size));
3706
3707         y = CLAMP (y, top, bottom);
3708
3709         if (should_invert (range))
3710           y = bottom - (y - top + height);
3711
3712         priv->slider.y = y;
3713         priv->slider.height = height;
3714
3715         /* These are publically exported */
3716         priv->slider_start = priv->slider.y;
3717         priv->slider_end = priv->slider.y + priv->slider.height;
3718       }
3719     }
3720   else
3721     {
3722       gint stepper_width, stepper_height;
3723
3724       /* Steppers are the height of the range, and stepper_size in
3725        * width, or if we don't have enough width, divided equally
3726        * among available space.
3727        */
3728       stepper_height = range_rect.height + focus_width * 2;
3729
3730       if (trough_under_steppers)
3731         stepper_height -= trough_border * 2;
3732
3733       if (stepper_height < 1)
3734         stepper_height = range_rect.height; /* screw the trough border */
3735
3736       if (n_steppers == 0)
3737         stepper_width = 0; /* avoid divide by n_steppers */
3738       else
3739         stepper_width = MIN (stepper_size, (range_rect.width / n_steppers));
3740
3741       /* Stepper A */
3742
3743       priv->stepper_a.x = range_rect.x + focus_width + trough_border * trough_under_steppers;
3744       priv->stepper_a.y = range_rect.y + focus_width + trough_border * trough_under_steppers;
3745
3746       if (priv->has_stepper_a)
3747         {
3748           priv->stepper_a.width = stepper_width;
3749           priv->stepper_a.height = stepper_height;
3750         }
3751       else
3752         {
3753           priv->stepper_a.width = 0;
3754           priv->stepper_a.height = 0;
3755         }
3756
3757       /* Stepper B */
3758
3759       priv->stepper_b.x = priv->stepper_a.x + priv->stepper_a.width;
3760       priv->stepper_b.y = priv->stepper_a.y;
3761
3762       if (priv->has_stepper_b)
3763         {
3764           priv->stepper_b.width = stepper_width;
3765           priv->stepper_b.height = stepper_height;
3766         }
3767       else
3768         {
3769           priv->stepper_b.width = 0;
3770           priv->stepper_b.height = 0;
3771         }
3772
3773       /* Stepper D */
3774
3775       if (priv->has_stepper_d)
3776         {
3777           priv->stepper_d.width = stepper_width;
3778           priv->stepper_d.height = stepper_height;
3779         }
3780       else
3781         {
3782           priv->stepper_d.width = 0;
3783           priv->stepper_d.height = 0;
3784         }
3785
3786       priv->stepper_d.x = range_rect.x + range_rect.width - priv->stepper_d.width - focus_width - trough_border * trough_under_steppers;
3787       priv->stepper_d.y = priv->stepper_a.y;
3788
3789
3790       /* Stepper C */
3791
3792       if (priv->has_stepper_c)
3793         {
3794           priv->stepper_c.width = stepper_width;
3795           priv->stepper_c.height = stepper_height;
3796         }
3797       else
3798         {
3799           priv->stepper_c.width = 0;
3800           priv->stepper_c.height = 0;
3801         }
3802
3803       priv->stepper_c.x = priv->stepper_d.x - priv->stepper_c.width;
3804       priv->stepper_c.y = priv->stepper_a.y;
3805
3806       /* Now the trough is the remaining space between steppers B and C,
3807        * if any
3808        */
3809       priv->trough.x = priv->stepper_b.x + priv->stepper_b.width + stepper_spacing * has_steppers_ab;
3810       priv->trough.y = range_rect.y;
3811
3812       priv->trough.width = priv->stepper_c.x - priv->trough.x - stepper_spacing * has_steppers_cd;
3813       priv->trough.height = range_rect.height;
3814
3815       /* Slider fits into the trough, with stepper_spacing on either side,
3816        * and the size/position based on the adjustment or fixed, depending.
3817        */
3818       priv->slider.y = priv->trough.y + focus_width + trough_border;
3819       priv->slider.height = priv->trough.height - (focus_width + trough_border) * 2;
3820
3821       /* Compute slider position/length */
3822       {
3823         gint x, left, right, width;
3824
3825         left = priv->trough.x;
3826         right = priv->trough.x + priv->trough.width;
3827
3828         if (! trough_under_steppers)
3829           {
3830             left += trough_border;
3831             right -= trough_border;
3832           }
3833
3834         /* slider width is the fraction (page_size /
3835          * total_adjustment_range) times the trough width in pixels
3836          */
3837
3838         if (priv->adjustment->upper - priv->adjustment->lower != 0)
3839           width = ((right - left) * (priv->adjustment->page_size /
3840                                    (priv->adjustment->upper - priv->adjustment->lower)));
3841         else
3842           width = priv->min_slider_size;
3843
3844         if (width < priv->min_slider_size ||
3845             priv->slider_size_fixed)
3846           width = priv->min_slider_size;
3847
3848         width = MIN (width, priv->trough.width);
3849
3850         x = left;
3851
3852         if (priv->adjustment->upper - priv->adjustment->lower - priv->adjustment->page_size != 0)
3853           x += (right - left - width) * ((adjustment_value - priv->adjustment->lower) /
3854                                          (priv->adjustment->upper - priv->adjustment->lower - priv->adjustment->page_size));
3855
3856         x = CLAMP (x, left, right);
3857
3858         if (should_invert (range))
3859           x = right - (x - left + width);
3860
3861         priv->slider.x = x;
3862         priv->slider.width = width;
3863
3864         /* These are publically exported */
3865         priv->slider_start = priv->slider.x;
3866         priv->slider_end = priv->slider.x + priv->slider.width;
3867       }
3868     }
3869
3870   gtk_range_update_mouse_location (range);
3871
3872   switch (priv->upper_sensitivity)
3873     {
3874     case GTK_SENSITIVITY_AUTO:
3875       priv->upper_sensitive =
3876         (priv->adjustment->value <
3877          (priv->adjustment->upper - priv->adjustment->page_size));
3878       break;
3879
3880     case GTK_SENSITIVITY_ON:
3881       priv->upper_sensitive = TRUE;
3882       break;
3883
3884     case GTK_SENSITIVITY_OFF:
3885       priv->upper_sensitive = FALSE;
3886       break;
3887     }
3888
3889   switch (priv->lower_sensitivity)
3890     {
3891     case GTK_SENSITIVITY_AUTO:
3892       priv->lower_sensitive =
3893         (priv->adjustment->value > priv->adjustment->lower);
3894       break;
3895
3896     case GTK_SENSITIVITY_ON:
3897       priv->lower_sensitive = TRUE;
3898       break;
3899
3900     case GTK_SENSITIVITY_OFF:
3901       priv->lower_sensitive = FALSE;
3902       break;
3903     }
3904 }
3905
3906 static GdkRectangle*
3907 get_area (GtkRange     *range,
3908           MouseLocation location)
3909 {
3910   GtkRangePrivate *priv = range->priv;
3911
3912   switch (location)
3913     {
3914     case MOUSE_STEPPER_A:
3915       return &priv->stepper_a;
3916     case MOUSE_STEPPER_B:
3917       return &priv->stepper_b;
3918     case MOUSE_STEPPER_C:
3919       return &priv->stepper_c;
3920     case MOUSE_STEPPER_D:
3921       return &priv->stepper_d;
3922     case MOUSE_TROUGH:
3923       return &priv->trough;
3924     case MOUSE_SLIDER:
3925       return &priv->slider;
3926     case MOUSE_WIDGET:
3927     case MOUSE_OUTSIDE:
3928       break;
3929     }
3930
3931   g_warning (G_STRLOC": bug");
3932   return NULL;
3933 }
3934
3935 static void
3936 gtk_range_calc_marks (GtkRange *range)
3937 {
3938   GtkRangePrivate *priv = range->priv;
3939   gint i;
3940
3941   if (!priv->recalc_marks)
3942     return;
3943
3944   priv->recalc_marks = FALSE;
3945
3946   for (i = 0; i < priv->n_marks; i++)
3947     {
3948       priv->need_recalc = TRUE;
3949       gtk_range_calc_layout (range, priv->marks[i]);
3950       if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
3951         priv->mark_pos[i] = priv->slider.x + priv->slider.width / 2;
3952       else
3953         priv->mark_pos[i] = priv->slider.y + priv->slider.height / 2;
3954     }
3955
3956   priv->need_recalc = TRUE;
3957 }
3958
3959 static gboolean
3960 gtk_range_real_change_value (GtkRange     *range,
3961                              GtkScrollType scroll,
3962                              gdouble       value)
3963 {
3964   GtkRangePrivate *priv = range->priv;
3965
3966   /* potentially adjust the bounds _before_ we clamp */
3967   g_signal_emit (range, signals[ADJUST_BOUNDS], 0, value);
3968
3969   if (priv->restrict_to_fill_level)
3970     value = MIN (value, MAX (priv->adjustment->lower,
3971                              priv->fill_level));
3972
3973   value = CLAMP (value, priv->adjustment->lower,
3974                  (priv->adjustment->upper - priv->adjustment->page_size));
3975
3976   if (priv->round_digits >= 0)
3977     {
3978       gdouble power;
3979       gint i;
3980
3981       i = priv->round_digits;
3982       power = 1;
3983       while (i--)
3984         power *= 10;
3985
3986       value = floor ((value * power) + 0.5) / power;
3987     }
3988
3989   if (priv->adjustment->value != value)
3990     {
3991       priv->need_recalc = TRUE;
3992
3993       gtk_widget_queue_draw (GTK_WIDGET (range));
3994
3995       switch (priv->update_policy)
3996         {
3997         case GTK_UPDATE_CONTINUOUS:
3998           gtk_adjustment_set_value (priv->adjustment, value);
3999           break;
4000
4001           /* Delayed means we update after a period of inactivity */
4002         case GTK_UPDATE_DELAYED:
4003           gtk_range_reset_update_timer (range);
4004           /* FALL THRU */
4005
4006           /* Discontinuous means we update on button release */
4007         case GTK_UPDATE_DISCONTINUOUS:
4008           /* don't emit value_changed signal */
4009           priv->adjustment->value = value;
4010           priv->update_pending = TRUE;
4011           break;
4012         }
4013     }
4014   return FALSE;
4015 }
4016
4017 static void
4018 gtk_range_update_value (GtkRange *range)
4019 {
4020   GtkRangePrivate *priv = range->priv;
4021
4022   gtk_range_remove_update_timer (range);
4023
4024   if (priv->update_pending)
4025     {
4026       gtk_adjustment_value_changed (priv->adjustment);
4027
4028       priv->update_pending = FALSE;
4029     }
4030 }
4031
4032 struct _GtkRangeStepTimer
4033 {
4034   guint timeout_id;
4035   GtkScrollType step;
4036 };
4037
4038 static gboolean
4039 second_timeout (gpointer data)
4040 {
4041   GtkRange *range = GTK_RANGE (data);
4042   GtkRangePrivate *priv = range->priv;
4043
4044   gtk_range_scroll (range, priv->timer->step);
4045
4046   return TRUE;
4047 }
4048
4049 static gboolean
4050 initial_timeout (gpointer data)
4051 {
4052   GtkRange *range = GTK_RANGE (data);
4053   GtkRangePrivate *priv = range->priv;
4054   GtkSettings *settings;
4055   guint        timeout;
4056
4057   settings = gtk_widget_get_settings (GTK_WIDGET (data));
4058   g_object_get (settings, "gtk-timeout-repeat", &timeout, NULL);
4059
4060   priv->timer->timeout_id = gdk_threads_add_timeout (timeout * SCROLL_DELAY_FACTOR,
4061                                             second_timeout,
4062                                             range);
4063   /* remove self */
4064   return FALSE;
4065 }
4066
4067 static void
4068 gtk_range_add_step_timer (GtkRange      *range,
4069                           GtkScrollType  step)
4070 {
4071   GtkRangePrivate *priv = range->priv;
4072   GtkSettings *settings;
4073   guint        timeout;
4074
4075   g_return_if_fail (priv->timer == NULL);
4076   g_return_if_fail (step != GTK_SCROLL_NONE);
4077
4078   settings = gtk_widget_get_settings (GTK_WIDGET (range));
4079   g_object_get (settings, "gtk-timeout-initial", &timeout, NULL);
4080
4081   priv->timer = g_new (GtkRangeStepTimer, 1);
4082
4083   priv->timer->timeout_id = gdk_threads_add_timeout (timeout,
4084                                             initial_timeout,
4085                                             range);
4086   priv->timer->step = step;
4087
4088   gtk_range_scroll (range, priv->timer->step);
4089 }
4090
4091 static void
4092 gtk_range_remove_step_timer (GtkRange *range)
4093 {
4094   GtkRangePrivate *priv = range->priv;
4095
4096   if (priv->timer)
4097     {
4098       if (priv->timer->timeout_id != 0)
4099         g_source_remove (priv->timer->timeout_id);
4100
4101       g_free (priv->timer);
4102
4103       priv->timer = NULL;
4104     }
4105 }
4106
4107 static gboolean
4108 update_timeout (gpointer data)
4109 {
4110   GtkRange *range = GTK_RANGE (data);
4111   GtkRangePrivate *priv = range->priv;
4112
4113   gtk_range_update_value (range);
4114   priv->update_timeout_id = 0;
4115
4116   /* self-remove */
4117   return FALSE;
4118 }
4119
4120 static void
4121 gtk_range_reset_update_timer (GtkRange *range)
4122 {
4123   GtkRangePrivate *priv = range->priv;
4124
4125   gtk_range_remove_update_timer (range);
4126
4127   priv->update_timeout_id = gdk_threads_add_timeout (UPDATE_DELAY,
4128                                             update_timeout,
4129                                             range);
4130 }
4131
4132 static void
4133 gtk_range_remove_update_timer (GtkRange *range)
4134 {
4135   GtkRangePrivate *priv = range->priv;
4136
4137   if (priv->update_timeout_id != 0)
4138     {
4139       g_source_remove (priv->update_timeout_id);
4140       priv->update_timeout_id = 0;
4141     }
4142 }
4143
4144 void
4145 _gtk_range_set_stop_values (GtkRange *range,
4146                             gdouble  *values,
4147                             gint      n_values)
4148 {
4149   GtkRangePrivate *priv = range->priv;
4150   gint i;
4151
4152   g_free (priv->marks);
4153   priv->marks = g_new (gdouble, n_values);
4154
4155   g_free (priv->mark_pos);
4156   priv->mark_pos = g_new (gint, n_values);
4157
4158   priv->n_marks = n_values;
4159
4160   for (i = 0; i < n_values; i++)
4161     priv->marks[i] = values[i];
4162
4163   priv->recalc_marks = TRUE;
4164 }
4165
4166 gint
4167 _gtk_range_get_stop_positions (GtkRange  *range,
4168                                gint     **values)
4169 {
4170   GtkRangePrivate *priv = range->priv;
4171
4172   gtk_range_calc_marks (range);
4173
4174   if (values)
4175     *values = g_memdup (priv->mark_pos, priv->n_marks * sizeof (gint));
4176
4177   return priv->n_marks;
4178 }
4179
4180 void
4181 _gtk_range_set_round_digits (GtkRange *range,
4182                              gint     round_digits)
4183 {
4184   range->priv->round_digits = round_digits;
4185 }
4186
4187 void
4188 _gtk_range_set_steppers (GtkRange      *range,
4189                          gboolean       has_a,
4190                          gboolean       has_b,
4191                          gboolean       has_c,
4192                          gboolean       has_d)
4193 {
4194   range->priv->has_stepper_a = has_a;
4195   range->priv->has_stepper_b = has_b;
4196   range->priv->has_stepper_c = has_c;
4197   range->priv->has_stepper_d = has_d;
4198 }