1 /* GTK - The GIMP Toolkit
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
3 * Copyright (C) 2001 Red Hat, Inc.
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.
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.
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.
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/.
33 #include <gdk/gdkkeysyms.h>
35 #include "gtkmarshalers.h"
36 #include "gtkorientable.h"
39 #include "gtkscrollbar.h"
40 #include "gtkprivate.h"
45 * @Short_description: Base class for widgets which visualize an adjustment
48 * #GtkRange is the common base class for widgets which visualize an
49 * adjustment, e.g #GtkScale or #GtkScrollbar.
51 * Apart from signals for monitoring the parameters of the adjustment,
52 * #GtkRange provides properties and methods for influencing the sensitivity
53 * of the "steppers". It also provides properties and methods for setting a
54 * "fill level" on range widgets. See gtk_range_set_fill_level().
58 #define SCROLL_DELAY_FACTOR 5 /* Scroll repeat multiplier */
59 #define UPDATE_DELAY 300 /* Delay for queued update */
61 typedef struct _GtkRangeStepTimer GtkRangeStepTimer;
71 MOUSE_WIDGET /* inside widget but not in any of the above GUI elements */
74 struct _GtkRangePrivate
76 MouseLocation mouse_location;
77 /* last mouse coords we got, or -1 if mouse is outside the range */
80 MouseLocation grab_location; /* "grabbed" mouse location, OUTSIDE for no grab */
81 guint grab_button : 8; /* 0 if none */
83 GtkRangeStepTimer *timer;
85 GtkAdjustment *adjustment;
86 GtkOrientation orientation;
87 GtkSensitivityType lower_sensitivity;
88 GtkSensitivityType upper_sensitivity;
89 GtkUpdateType update_policy;
91 GdkDevice *grab_device;
92 GdkRectangle range_rect; /* Area of entire stepper + trough assembly in widget->window coords */
93 /* These are in widget->window coordinates */
94 GdkRectangle stepper_a;
95 GdkRectangle stepper_b;
96 GdkRectangle stepper_c;
97 GdkRectangle stepper_d;
98 GdkRectangle trough; /* The trough rectangle is the area the thumb can slide in, not the entire range_rect */
100 GdkWindow *event_window;
102 GQuark slider_detail_quark;
103 GQuark stepper_detail_quark[4];
105 gboolean recalc_marks;
111 gint min_slider_size;
113 gint round_digits; /* Round off value to this many digits, -1 for no rounding */
114 gint slide_initial_slider_position;
115 gint slide_initial_coordinate;
116 gint slider_start; /* Slider range along the long dimension, in widget->window coords */
120 guint update_timeout_id;
122 /* Steppers are: < > ---- < >
125 guint has_stepper_a : 1;
126 guint has_stepper_b : 1;
127 guint has_stepper_c : 1;
128 guint has_stepper_d : 1;
132 guint need_recalc : 1;
133 guint slider_size_fixed : 1;
134 guint trough_click_forward : 1; /* trough click was on the forward side of slider */
135 guint update_pending : 1; /* need to emit value_changed */
137 /* Stepper sensitivity */
138 guint lower_sensitive : 1;
139 guint upper_sensitive : 1;
142 guint show_fill_level : 1;
143 guint restrict_to_fill_level : 1;
153 PROP_LOWER_STEPPER_SENSITIVITY,
154 PROP_UPPER_STEPPER_SENSITIVITY,
155 PROP_SHOW_FILL_LEVEL,
156 PROP_RESTRICT_TO_FILL_LEVEL,
175 static void gtk_range_set_property (GObject *object,
179 static void gtk_range_get_property (GObject *object,
183 static void gtk_range_destroy (GtkObject *object);
184 static void gtk_range_size_request (GtkWidget *widget,
185 GtkRequisition *requisition);
186 static void gtk_range_size_allocate (GtkWidget *widget,
187 GtkAllocation *allocation);
188 static void gtk_range_realize (GtkWidget *widget);
189 static void gtk_range_unrealize (GtkWidget *widget);
190 static void gtk_range_map (GtkWidget *widget);
191 static void gtk_range_unmap (GtkWidget *widget);
192 static gboolean gtk_range_draw (GtkWidget *widget,
194 static gboolean gtk_range_button_press (GtkWidget *widget,
195 GdkEventButton *event);
196 static gboolean gtk_range_button_release (GtkWidget *widget,
197 GdkEventButton *event);
198 static gboolean gtk_range_motion_notify (GtkWidget *widget,
199 GdkEventMotion *event);
200 static gboolean gtk_range_enter_notify (GtkWidget *widget,
201 GdkEventCrossing *event);
202 static gboolean gtk_range_leave_notify (GtkWidget *widget,
203 GdkEventCrossing *event);
204 static gboolean gtk_range_grab_broken (GtkWidget *widget,
205 GdkEventGrabBroken *event);
206 static void gtk_range_grab_notify (GtkWidget *widget,
207 gboolean was_grabbed);
208 static void gtk_range_state_changed (GtkWidget *widget,
209 GtkStateType previous_state);
210 static gboolean gtk_range_scroll_event (GtkWidget *widget,
211 GdkEventScroll *event);
212 static void gtk_range_style_set (GtkWidget *widget,
213 GtkStyle *previous_style);
214 static void update_slider_position (GtkRange *range,
217 static void stop_scrolling (GtkRange *range);
221 static void gtk_range_move_slider (GtkRange *range,
222 GtkScrollType scroll);
225 static gboolean gtk_range_scroll (GtkRange *range,
226 GtkScrollType scroll);
227 static gboolean gtk_range_update_mouse_location (GtkRange *range);
228 static void gtk_range_calc_layout (GtkRange *range,
229 gdouble adjustment_value);
230 static void gtk_range_calc_marks (GtkRange *range);
231 static void gtk_range_get_props (GtkRange *range,
236 gint *stepper_spacing,
237 gboolean *trough_under_steppers,
238 gint *arrow_displacement_x,
239 gint *arrow_displacement_y);
240 static void gtk_range_calc_request (GtkRange *range,
245 gint stepper_spacing,
246 GdkRectangle *range_rect,
249 gboolean *has_steppers_ab,
250 gboolean *has_steppers_cd,
251 gint *slider_length_p);
252 static void gtk_range_adjustment_value_changed (GtkAdjustment *adjustment,
254 static void gtk_range_adjustment_changed (GtkAdjustment *adjustment,
256 static void gtk_range_add_step_timer (GtkRange *range,
258 static void gtk_range_remove_step_timer (GtkRange *range);
259 static void gtk_range_reset_update_timer (GtkRange *range);
260 static void gtk_range_remove_update_timer (GtkRange *range);
261 static GdkRectangle* get_area (GtkRange *range,
262 MouseLocation location);
263 static gboolean gtk_range_real_change_value (GtkRange *range,
264 GtkScrollType scroll,
266 static void gtk_range_update_value (GtkRange *range);
267 static gboolean gtk_range_key_press (GtkWidget *range,
271 G_DEFINE_ABSTRACT_TYPE_WITH_CODE (GtkRange, gtk_range, GTK_TYPE_WIDGET,
272 G_IMPLEMENT_INTERFACE (GTK_TYPE_ORIENTABLE,
275 static guint signals[LAST_SIGNAL];
279 gtk_range_class_init (GtkRangeClass *class)
281 GObjectClass *gobject_class;
282 GtkObjectClass *object_class;
283 GtkWidgetClass *widget_class;
285 gobject_class = G_OBJECT_CLASS (class);
286 object_class = (GtkObjectClass*) class;
287 widget_class = (GtkWidgetClass*) class;
289 gobject_class->set_property = gtk_range_set_property;
290 gobject_class->get_property = gtk_range_get_property;
292 object_class->destroy = gtk_range_destroy;
294 widget_class->size_request = gtk_range_size_request;
295 widget_class->size_allocate = gtk_range_size_allocate;
296 widget_class->realize = gtk_range_realize;
297 widget_class->unrealize = gtk_range_unrealize;
298 widget_class->map = gtk_range_map;
299 widget_class->unmap = gtk_range_unmap;
300 widget_class->draw = gtk_range_draw;
301 widget_class->button_press_event = gtk_range_button_press;
302 widget_class->button_release_event = gtk_range_button_release;
303 widget_class->motion_notify_event = gtk_range_motion_notify;
304 widget_class->scroll_event = gtk_range_scroll_event;
305 widget_class->enter_notify_event = gtk_range_enter_notify;
306 widget_class->leave_notify_event = gtk_range_leave_notify;
307 widget_class->grab_broken_event = gtk_range_grab_broken;
308 widget_class->grab_notify = gtk_range_grab_notify;
309 widget_class->state_changed = gtk_range_state_changed;
310 widget_class->style_set = gtk_range_style_set;
311 widget_class->key_press_event = gtk_range_key_press;
313 class->move_slider = gtk_range_move_slider;
314 class->change_value = gtk_range_real_change_value;
316 class->slider_detail = "slider";
317 class->stepper_detail = "stepper";
320 * GtkRange::value-changed:
321 * @range: the #GtkRange that received the signal
323 * Emitted when the range value changes.
325 signals[VALUE_CHANGED] =
326 g_signal_new (I_("value-changed"),
327 G_TYPE_FROM_CLASS (gobject_class),
329 G_STRUCT_OFFSET (GtkRangeClass, value_changed),
331 _gtk_marshal_VOID__VOID,
335 * GtkRange::adjust-bounds:
336 * @range: the #GtkRange that received the signal
337 * @value: the value before we clamp
339 * Emitted before clamping a value, to give the application a
340 * chance to adjust the bounds.
342 signals[ADJUST_BOUNDS] =
343 g_signal_new (I_("adjust-bounds"),
344 G_TYPE_FROM_CLASS (gobject_class),
346 G_STRUCT_OFFSET (GtkRangeClass, adjust_bounds),
348 _gtk_marshal_VOID__DOUBLE,
353 * GtkRange::move-slider:
354 * @range: the #GtkRange that received the signal
355 * @step: how to move the slider
357 * Virtual function that moves the slider. Used for keybindings.
359 signals[MOVE_SLIDER] =
360 g_signal_new (I_("move-slider"),
361 G_TYPE_FROM_CLASS (gobject_class),
362 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
363 G_STRUCT_OFFSET (GtkRangeClass, move_slider),
365 _gtk_marshal_VOID__ENUM,
367 GTK_TYPE_SCROLL_TYPE);
370 * GtkRange::change-value:
371 * @range: the #GtkRange that received the signal
372 * @scroll: the type of scroll action that was performed
373 * @value: the new value resulting from the scroll action
374 * @returns: %TRUE to prevent other handlers from being invoked for the
375 * signal, %FALSE to propagate the signal further
377 * The ::change-value signal is emitted when a scroll action is
378 * performed on a range. It allows an application to determine the
379 * type of scroll event that occurred and the resultant new value.
380 * The application can handle the event itself and return %TRUE to
381 * prevent further processing. Or, by returning %FALSE, it can pass
382 * the event to other handlers until the default GTK+ handler is
385 * The value parameter is unrounded. An application that overrides
386 * the ::change-value signal is responsible for clamping the value to
387 * the desired number of decimal digits; the default GTK+ handler
388 * clamps the value based on @range->round_digits.
390 * It is not possible to use delayed update policies in an overridden
391 * ::change-value handler.
395 signals[CHANGE_VALUE] =
396 g_signal_new (I_("change-value"),
397 G_TYPE_FROM_CLASS (gobject_class),
399 G_STRUCT_OFFSET (GtkRangeClass, change_value),
400 _gtk_boolean_handled_accumulator, NULL,
401 _gtk_marshal_BOOLEAN__ENUM_DOUBLE,
403 GTK_TYPE_SCROLL_TYPE,
406 g_object_class_override_property (gobject_class,
410 g_object_class_install_property (gobject_class,
412 g_param_spec_enum ("update-policy",
414 P_("How the range should be updated on the screen"),
415 GTK_TYPE_UPDATE_TYPE,
416 GTK_UPDATE_CONTINUOUS,
417 GTK_PARAM_READWRITE));
419 g_object_class_install_property (gobject_class,
421 g_param_spec_object ("adjustment",
423 P_("The GtkAdjustment that contains the current value of this range object"),
425 GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT));
427 g_object_class_install_property (gobject_class,
429 g_param_spec_boolean ("inverted",
431 P_("Invert direction slider moves to increase range value"),
433 GTK_PARAM_READWRITE));
435 g_object_class_install_property (gobject_class,
436 PROP_LOWER_STEPPER_SENSITIVITY,
437 g_param_spec_enum ("lower-stepper-sensitivity",
438 P_("Lower stepper sensitivity"),
439 P_("The sensitivity policy for the stepper that points to the adjustment's lower side"),
440 GTK_TYPE_SENSITIVITY_TYPE,
441 GTK_SENSITIVITY_AUTO,
442 GTK_PARAM_READWRITE));
444 g_object_class_install_property (gobject_class,
445 PROP_UPPER_STEPPER_SENSITIVITY,
446 g_param_spec_enum ("upper-stepper-sensitivity",
447 P_("Upper stepper sensitivity"),
448 P_("The sensitivity policy for the stepper that points to the adjustment's upper side"),
449 GTK_TYPE_SENSITIVITY_TYPE,
450 GTK_SENSITIVITY_AUTO,
451 GTK_PARAM_READWRITE));
454 * GtkRange:show-fill-level:
456 * The show-fill-level property controls whether fill level indicator
457 * graphics are displayed on the trough. See
458 * gtk_range_set_show_fill_level().
462 g_object_class_install_property (gobject_class,
463 PROP_SHOW_FILL_LEVEL,
464 g_param_spec_boolean ("show-fill-level",
465 P_("Show Fill Level"),
466 P_("Whether to display a fill level indicator graphics on trough."),
468 GTK_PARAM_READWRITE));
471 * GtkRange:restrict-to-fill-level:
473 * The restrict-to-fill-level property controls whether slider
474 * movement is restricted to an upper boundary set by the
475 * fill level. See gtk_range_set_restrict_to_fill_level().
479 g_object_class_install_property (gobject_class,
480 PROP_RESTRICT_TO_FILL_LEVEL,
481 g_param_spec_boolean ("restrict-to-fill-level",
482 P_("Restrict to Fill Level"),
483 P_("Whether to restrict the upper boundary to the fill level."),
485 GTK_PARAM_READWRITE));
488 * GtkRange:fill-level:
490 * The fill level (e.g. prebuffering of a network stream).
491 * See gtk_range_set_fill_level().
495 g_object_class_install_property (gobject_class,
497 g_param_spec_double ("fill-level",
499 P_("The fill level."),
503 GTK_PARAM_READWRITE));
505 gtk_widget_class_install_style_property (widget_class,
506 g_param_spec_int ("slider-width",
508 P_("Width of scrollbar or scale thumb"),
512 GTK_PARAM_READABLE));
513 gtk_widget_class_install_style_property (widget_class,
514 g_param_spec_int ("trough-border",
516 P_("Spacing between thumb/steppers and outer trough bevel"),
520 GTK_PARAM_READABLE));
521 gtk_widget_class_install_style_property (widget_class,
522 g_param_spec_int ("stepper-size",
524 P_("Length of step buttons at ends"),
528 GTK_PARAM_READABLE));
530 * GtkRange:stepper-spacing:
532 * The spacing between the stepper buttons and thumb. Note that
533 * setting this value to anything > 0 will automatically set the
534 * trough-under-steppers style property to %TRUE as well. Also,
535 * stepper-spacing won't have any effect if there are no steppers.
537 gtk_widget_class_install_style_property (widget_class,
538 g_param_spec_int ("stepper-spacing",
539 P_("Stepper Spacing"),
540 P_("Spacing between step buttons and thumb"),
544 GTK_PARAM_READABLE));
545 gtk_widget_class_install_style_property (widget_class,
546 g_param_spec_int ("arrow-displacement-x",
547 P_("Arrow X Displacement"),
548 P_("How far in the x direction to move the arrow when the button is depressed"),
552 GTK_PARAM_READABLE));
553 gtk_widget_class_install_style_property (widget_class,
554 g_param_spec_int ("arrow-displacement-y",
555 P_("Arrow Y Displacement"),
556 P_("How far in the y direction to move the arrow when the button is depressed"),
560 GTK_PARAM_READABLE));
563 * GtkRange:trough-under-steppers:
565 * Whether to draw the trough across the full length of the range or
566 * to exclude the steppers and their spacing. Note that setting the
567 * #GtkRange:stepper-spacing style property to any value > 0 will
568 * automatically enable trough-under-steppers too.
572 gtk_widget_class_install_style_property (widget_class,
573 g_param_spec_boolean ("trough-under-steppers",
574 P_("Trough Under Steppers"),
575 P_("Whether to draw trough for full length of range or exclude the steppers and spacing"),
577 GTK_PARAM_READABLE));
580 * GtkRange:arrow-scaling:
582 * The arrow size proportion relative to the scroll button size.
586 gtk_widget_class_install_style_property (widget_class,
587 g_param_spec_float ("arrow-scaling",
589 P_("Arrow scaling with regard to scroll button size"),
591 GTK_PARAM_READABLE));
593 g_type_class_add_private (class, sizeof (GtkRangePrivate));
597 gtk_range_set_property (GObject *object,
602 GtkRange *range = GTK_RANGE (object);
603 GtkRangePrivate *priv = range->priv;
607 case PROP_ORIENTATION:
608 priv->orientation = g_value_get_enum (value);
610 priv->slider_detail_quark = 0;
611 priv->stepper_detail_quark[0] = 0;
612 priv->stepper_detail_quark[1] = 0;
613 priv->stepper_detail_quark[2] = 0;
614 priv->stepper_detail_quark[3] = 0;
616 gtk_widget_queue_resize (GTK_WIDGET (range));
618 case PROP_UPDATE_POLICY:
619 gtk_range_set_update_policy (range, g_value_get_enum (value));
621 case PROP_ADJUSTMENT:
622 gtk_range_set_adjustment (range, g_value_get_object (value));
625 gtk_range_set_inverted (range, g_value_get_boolean (value));
627 case PROP_LOWER_STEPPER_SENSITIVITY:
628 gtk_range_set_lower_stepper_sensitivity (range, g_value_get_enum (value));
630 case PROP_UPPER_STEPPER_SENSITIVITY:
631 gtk_range_set_upper_stepper_sensitivity (range, g_value_get_enum (value));
633 case PROP_SHOW_FILL_LEVEL:
634 gtk_range_set_show_fill_level (range, g_value_get_boolean (value));
636 case PROP_RESTRICT_TO_FILL_LEVEL:
637 gtk_range_set_restrict_to_fill_level (range, g_value_get_boolean (value));
639 case PROP_FILL_LEVEL:
640 gtk_range_set_fill_level (range, g_value_get_double (value));
643 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
649 gtk_range_get_property (GObject *object,
654 GtkRange *range = GTK_RANGE (object);
655 GtkRangePrivate *priv = range->priv;
659 case PROP_ORIENTATION:
660 g_value_set_enum (value, priv->orientation);
662 case PROP_UPDATE_POLICY:
663 g_value_set_enum (value, priv->update_policy);
665 case PROP_ADJUSTMENT:
666 g_value_set_object (value, priv->adjustment);
669 g_value_set_boolean (value, priv->inverted);
671 case PROP_LOWER_STEPPER_SENSITIVITY:
672 g_value_set_enum (value, gtk_range_get_lower_stepper_sensitivity (range));
674 case PROP_UPPER_STEPPER_SENSITIVITY:
675 g_value_set_enum (value, gtk_range_get_upper_stepper_sensitivity (range));
677 case PROP_SHOW_FILL_LEVEL:
678 g_value_set_boolean (value, gtk_range_get_show_fill_level (range));
680 case PROP_RESTRICT_TO_FILL_LEVEL:
681 g_value_set_boolean (value, gtk_range_get_restrict_to_fill_level (range));
683 case PROP_FILL_LEVEL:
684 g_value_set_double (value, gtk_range_get_fill_level (range));
687 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
693 gtk_range_init (GtkRange *range)
695 GtkRangePrivate *priv;
697 range->priv = G_TYPE_INSTANCE_GET_PRIVATE (range,
702 gtk_widget_set_has_window (GTK_WIDGET (range), FALSE);
704 priv->orientation = GTK_ORIENTATION_HORIZONTAL;
705 priv->adjustment = NULL;
706 priv->update_policy = GTK_UPDATE_CONTINUOUS;
707 priv->inverted = FALSE;
708 priv->flippable = FALSE;
709 priv->min_slider_size = 1;
710 priv->has_stepper_a = FALSE;
711 priv->has_stepper_b = FALSE;
712 priv->has_stepper_c = FALSE;
713 priv->has_stepper_d = FALSE;
714 priv->need_recalc = TRUE;
715 priv->round_digits = -1;
716 priv->mouse_location = MOUSE_OUTSIDE;
719 priv->grab_location = MOUSE_OUTSIDE;
720 priv->grab_button = 0;
721 priv->lower_sensitivity = GTK_SENSITIVITY_AUTO;
722 priv->upper_sensitivity = GTK_SENSITIVITY_AUTO;
723 priv->lower_sensitive = TRUE;
724 priv->upper_sensitive = TRUE;
725 priv->show_fill_level = FALSE;
726 priv->restrict_to_fill_level = TRUE;
727 priv->fill_level = G_MAXDOUBLE;
732 * gtk_range_get_adjustment:
733 * @range: a #GtkRange
735 * Get the #GtkAdjustment which is the "model" object for #GtkRange.
736 * See gtk_range_set_adjustment() for details.
737 * The return value does not have a reference added, so should not
740 * Return value: (transfer none): a #GtkAdjustment
743 gtk_range_get_adjustment (GtkRange *range)
745 GtkRangePrivate *priv;
747 g_return_val_if_fail (GTK_IS_RANGE (range), NULL);
751 if (!priv->adjustment)
752 gtk_range_set_adjustment (range, NULL);
754 return priv->adjustment;
758 * gtk_range_set_update_policy:
759 * @range: a #GtkRange
760 * @policy: update policy
762 * Sets the update policy for the range. #GTK_UPDATE_CONTINUOUS means that
763 * anytime the range slider is moved, the range value will change and the
764 * value_changed signal will be emitted. #GTK_UPDATE_DELAYED means that
765 * the value will be updated after a brief timeout where no slider motion
766 * occurs, so updates are spaced by a short time rather than
767 * continuous. #GTK_UPDATE_DISCONTINUOUS means that the value will only
768 * be updated when the user releases the button and ends the slider
772 gtk_range_set_update_policy (GtkRange *range,
773 GtkUpdateType policy)
775 GtkRangePrivate *priv;
777 g_return_if_fail (GTK_IS_RANGE (range));
781 if (priv->update_policy != policy)
783 priv->update_policy = policy;
784 g_object_notify (G_OBJECT (range), "update-policy");
789 * gtk_range_get_update_policy:
790 * @range: a #GtkRange
792 * Gets the update policy of @range. See gtk_range_set_update_policy().
794 * Return value: the current update policy
797 gtk_range_get_update_policy (GtkRange *range)
799 g_return_val_if_fail (GTK_IS_RANGE (range), GTK_UPDATE_CONTINUOUS);
801 return range->priv->update_policy;
805 * gtk_range_set_adjustment:
806 * @range: a #GtkRange
807 * @adjustment: a #GtkAdjustment
809 * Sets the adjustment to be used as the "model" object for this range
810 * widget. The adjustment indicates the current range value, the
811 * minimum and maximum range values, the step/page increments used
812 * for keybindings and scrolling, and the page size. The page size
813 * is normally 0 for #GtkScale and nonzero for #GtkScrollbar, and
814 * indicates the size of the visible area of the widget being scrolled.
815 * The page size affects the size of the scrollbar slider.
818 gtk_range_set_adjustment (GtkRange *range,
819 GtkAdjustment *adjustment)
821 GtkRangePrivate *priv;
823 g_return_if_fail (GTK_IS_RANGE (range));
828 adjustment = (GtkAdjustment*) gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
830 g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
832 if (priv->adjustment != adjustment)
834 if (priv->adjustment)
836 g_signal_handlers_disconnect_by_func (priv->adjustment,
837 gtk_range_adjustment_changed,
839 g_signal_handlers_disconnect_by_func (priv->adjustment,
840 gtk_range_adjustment_value_changed,
842 g_object_unref (priv->adjustment);
845 priv->adjustment = adjustment;
846 g_object_ref_sink (adjustment);
848 g_signal_connect (adjustment, "changed",
849 G_CALLBACK (gtk_range_adjustment_changed),
851 g_signal_connect (adjustment, "value-changed",
852 G_CALLBACK (gtk_range_adjustment_value_changed),
855 gtk_range_adjustment_changed (adjustment, range);
856 g_object_notify (G_OBJECT (range), "adjustment");
861 * gtk_range_set_inverted:
862 * @range: a #GtkRange
863 * @setting: %TRUE to invert the range
865 * Ranges normally move from lower to higher values as the
866 * slider moves from top to bottom or left to right. Inverted
867 * ranges have higher values at the top or on the right rather than
868 * on the bottom or left.
871 gtk_range_set_inverted (GtkRange *range,
874 GtkRangePrivate *priv;
876 g_return_if_fail (GTK_IS_RANGE (range));
880 setting = setting != FALSE;
882 if (setting != priv->inverted)
884 priv->inverted = setting;
885 g_object_notify (G_OBJECT (range), "inverted");
886 gtk_widget_queue_resize (GTK_WIDGET (range));
891 * gtk_range_get_inverted:
892 * @range: a #GtkRange
894 * Gets the value set by gtk_range_set_inverted().
896 * Return value: %TRUE if the range is inverted
899 gtk_range_get_inverted (GtkRange *range)
901 g_return_val_if_fail (GTK_IS_RANGE (range), FALSE);
903 return range->priv->inverted;
907 * gtk_range_set_flippable:
908 * @range: a #GtkRange
909 * @flippable: %TRUE to make the range flippable
911 * If a range is flippable, it will switch its direction if it is
912 * horizontal and its direction is %GTK_TEXT_DIR_RTL.
914 * See gtk_widget_get_direction().
919 gtk_range_set_flippable (GtkRange *range,
922 GtkRangePrivate *priv;
924 g_return_if_fail (GTK_IS_RANGE (range));
928 flippable = flippable ? TRUE : FALSE;
930 if (flippable != priv->flippable)
932 priv->flippable = flippable;
934 gtk_widget_queue_draw (GTK_WIDGET (range));
939 * gtk_range_get_flippable:
940 * @range: a #GtkRange
942 * Gets the value set by gtk_range_set_flippable().
944 * Return value: %TRUE if the range is flippable
949 gtk_range_get_flippable (GtkRange *range)
951 g_return_val_if_fail (GTK_IS_RANGE (range), FALSE);
953 return range->priv->flippable;
957 * gtk_range_set_slider_size_fixed:
958 * @range: a #GtkRange
959 * @size_fixed: %TRUE to make the slider size constant
961 * Sets whether the range's slider has a fixed size, or a size that
962 * depends on it's adjustment's page size.
964 * This function is useful mainly for #GtkRange subclasses.
969 gtk_range_set_slider_size_fixed (GtkRange *range,
972 GtkRangePrivate *priv;
974 g_return_if_fail (GTK_IS_RANGE (range));
978 if (size_fixed != priv->slider_size_fixed)
980 priv->slider_size_fixed = size_fixed ? TRUE : FALSE;
982 if (priv->adjustment && gtk_widget_get_mapped (GTK_WIDGET (range)))
984 priv->need_recalc = TRUE;
985 gtk_range_calc_layout (range, gtk_adjustment_get_value (priv->adjustment));
986 gtk_widget_queue_draw (GTK_WIDGET (range));
992 * gtk_range_get_slider_size_fixed:
993 * @range: a #GtkRange
995 * This function is useful mainly for #GtkRange subclasses.
997 * See gtk_range_set_slider_size_fixed().
999 * Return value: whether the range's slider has a fixed size.
1004 gtk_range_get_slider_size_fixed (GtkRange *range)
1006 g_return_val_if_fail (GTK_IS_RANGE (range), FALSE);
1008 return range->priv->slider_size_fixed;
1012 * gtk_range_set_min_slider_size:
1013 * @range: a #GtkRange
1014 * @min_size: The slider's minimum size
1016 * Sets the minimum size of the range's slider.
1018 * This function is useful mainly for #GtkRange subclasses.
1023 gtk_range_set_min_slider_size (GtkRange *range,
1026 GtkRangePrivate *priv;
1028 g_return_if_fail (GTK_IS_RANGE (range));
1029 g_return_if_fail (min_size > 0);
1033 if (min_size != priv->min_slider_size)
1035 priv->min_slider_size = min_size;
1037 priv->need_recalc = TRUE;
1038 gtk_range_calc_layout (range, priv->adjustment->value);
1039 gtk_widget_queue_draw (GTK_WIDGET (range));
1044 * gtk_range_get_min_slider_size:
1045 * @range: a #GtkRange
1047 * This function is useful mainly for #GtkRange subclasses.
1049 * See gtk_range_set_min_slider_size().
1051 * Return value: The minimum size of the range's slider.
1056 gtk_range_get_min_slider_size (GtkRange *range)
1058 g_return_val_if_fail (GTK_IS_RANGE (range), FALSE);
1060 return range->priv->min_slider_size;
1064 * gtk_range_get_range_rect:
1065 * @range: a #GtkRange
1066 * @range_rect: return location for the range rectangle
1068 * This function returns the area that contains the range's trough
1069 * and its steppers, in widget->window coordinates.
1071 * This function is useful mainly for #GtkRange subclasses.
1076 gtk_range_get_range_rect (GtkRange *range,
1077 GdkRectangle *range_rect)
1079 GtkRangePrivate *priv;
1081 g_return_if_fail (GTK_IS_RANGE (range));
1082 g_return_if_fail (range_rect != NULL);
1086 gtk_range_calc_layout (range, priv->adjustment->value);
1088 *range_rect = priv->range_rect;
1092 * gtk_range_get_slider_range:
1093 * @range: a #GtkRange
1094 * @slider_start: (allow-none): return location for the slider's start, or %NULL
1095 * @slider_end: (allow-none): return location for the slider's end, or %NULL
1097 * This function returns sliders range along the long dimension,
1098 * in widget->window coordinates.
1100 * This function is useful mainly for #GtkRange subclasses.
1105 gtk_range_get_slider_range (GtkRange *range,
1109 GtkRangePrivate *priv;
1111 g_return_if_fail (GTK_IS_RANGE (range));
1115 gtk_range_calc_layout (range, priv->adjustment->value);
1118 *slider_start = priv->slider_start;
1121 *slider_end = priv->slider_end;
1125 * gtk_range_set_lower_stepper_sensitivity:
1126 * @range: a #GtkRange
1127 * @sensitivity: the lower stepper's sensitivity policy.
1129 * Sets the sensitivity policy for the stepper that points to the
1130 * 'lower' end of the GtkRange's adjustment.
1135 gtk_range_set_lower_stepper_sensitivity (GtkRange *range,
1136 GtkSensitivityType sensitivity)
1138 GtkRangePrivate *priv;
1140 g_return_if_fail (GTK_IS_RANGE (range));
1144 if (priv->lower_sensitivity != sensitivity)
1146 priv->lower_sensitivity = sensitivity;
1148 priv->need_recalc = TRUE;
1149 gtk_range_calc_layout (range, priv->adjustment->value);
1150 gtk_widget_queue_draw (GTK_WIDGET (range));
1152 g_object_notify (G_OBJECT (range), "lower-stepper-sensitivity");
1157 * gtk_range_get_lower_stepper_sensitivity:
1158 * @range: a #GtkRange
1160 * Gets the sensitivity policy for the stepper that points to the
1161 * 'lower' end of the GtkRange's adjustment.
1163 * Return value: The lower stepper's sensitivity policy.
1168 gtk_range_get_lower_stepper_sensitivity (GtkRange *range)
1170 g_return_val_if_fail (GTK_IS_RANGE (range), GTK_SENSITIVITY_AUTO);
1172 return range->priv->lower_sensitivity;
1176 * gtk_range_set_upper_stepper_sensitivity:
1177 * @range: a #GtkRange
1178 * @sensitivity: the upper stepper's sensitivity policy.
1180 * Sets the sensitivity policy for the stepper that points to the
1181 * 'upper' end of the GtkRange's adjustment.
1186 gtk_range_set_upper_stepper_sensitivity (GtkRange *range,
1187 GtkSensitivityType sensitivity)
1189 GtkRangePrivate *priv;
1191 g_return_if_fail (GTK_IS_RANGE (range));
1195 if (priv->upper_sensitivity != sensitivity)
1197 priv->upper_sensitivity = sensitivity;
1199 priv->need_recalc = TRUE;
1200 gtk_range_calc_layout (range, priv->adjustment->value);
1201 gtk_widget_queue_draw (GTK_WIDGET (range));
1203 g_object_notify (G_OBJECT (range), "upper-stepper-sensitivity");
1208 * gtk_range_get_upper_stepper_sensitivity:
1209 * @range: a #GtkRange
1211 * Gets the sensitivity policy for the stepper that points to the
1212 * 'upper' end of the GtkRange's adjustment.
1214 * Return value: The upper stepper's sensitivity policy.
1219 gtk_range_get_upper_stepper_sensitivity (GtkRange *range)
1221 g_return_val_if_fail (GTK_IS_RANGE (range), GTK_SENSITIVITY_AUTO);
1223 return range->priv->upper_sensitivity;
1227 * gtk_range_set_increments:
1228 * @range: a #GtkRange
1232 * Sets the step and page sizes for the range.
1233 * The step size is used when the user clicks the #GtkScrollbar
1234 * arrows or moves #GtkScale via arrow keys. The page size
1235 * is used for example when moving via Page Up or Page Down keys.
1238 gtk_range_set_increments (GtkRange *range,
1242 GtkRangePrivate *priv;
1244 g_return_if_fail (GTK_IS_RANGE (range));
1248 priv->adjustment->step_increment = step;
1249 priv->adjustment->page_increment = page;
1251 gtk_adjustment_changed (priv->adjustment);
1255 * gtk_range_set_range:
1256 * @range: a #GtkRange
1257 * @min: minimum range value
1258 * @max: maximum range value
1260 * Sets the allowable values in the #GtkRange, and clamps the range
1261 * value to be between @min and @max. (If the range has a non-zero
1262 * page size, it is clamped between @min and @max - page-size.)
1265 gtk_range_set_range (GtkRange *range,
1269 GtkRangePrivate *priv;
1272 g_return_if_fail (GTK_IS_RANGE (range));
1273 g_return_if_fail (min < max);
1277 priv->adjustment->lower = min;
1278 priv->adjustment->upper = max;
1280 value = priv->adjustment->value;
1282 if (priv->restrict_to_fill_level)
1283 value = MIN (value, MAX (priv->adjustment->lower,
1286 gtk_adjustment_set_value (priv->adjustment, value);
1287 gtk_adjustment_changed (priv->adjustment);
1291 * gtk_range_set_value:
1292 * @range: a #GtkRange
1293 * @value: new value of the range
1295 * Sets the current value of the range; if the value is outside the
1296 * minimum or maximum range values, it will be clamped to fit inside
1297 * them. The range emits the #GtkRange::value-changed signal if the
1301 gtk_range_set_value (GtkRange *range,
1304 GtkRangePrivate *priv;
1306 g_return_if_fail (GTK_IS_RANGE (range));
1310 if (priv->restrict_to_fill_level)
1311 value = MIN (value, MAX (priv->adjustment->lower,
1314 gtk_adjustment_set_value (priv->adjustment, value);
1318 * gtk_range_get_value:
1319 * @range: a #GtkRange
1321 * Gets the current value of the range.
1323 * Return value: current value of the range.
1326 gtk_range_get_value (GtkRange *range)
1328 g_return_val_if_fail (GTK_IS_RANGE (range), 0.0);
1330 return range->priv->adjustment->value;
1334 * gtk_range_set_show_fill_level:
1335 * @range: A #GtkRange
1336 * @show_fill_level: Whether a fill level indicator graphics is shown.
1338 * Sets whether a graphical fill level is show on the trough. See
1339 * gtk_range_set_fill_level() for a general description of the fill
1345 gtk_range_set_show_fill_level (GtkRange *range,
1346 gboolean show_fill_level)
1348 GtkRangePrivate *priv;
1350 g_return_if_fail (GTK_IS_RANGE (range));
1354 show_fill_level = show_fill_level ? TRUE : FALSE;
1356 if (show_fill_level != priv->show_fill_level)
1358 priv->show_fill_level = show_fill_level;
1359 g_object_notify (G_OBJECT (range), "show-fill-level");
1360 gtk_widget_queue_draw (GTK_WIDGET (range));
1365 * gtk_range_get_show_fill_level:
1366 * @range: A #GtkRange
1368 * Gets whether the range displays the fill level graphically.
1370 * Return value: %TRUE if @range shows the fill level.
1375 gtk_range_get_show_fill_level (GtkRange *range)
1377 g_return_val_if_fail (GTK_IS_RANGE (range), FALSE);
1379 return range->priv->show_fill_level;
1383 * gtk_range_set_restrict_to_fill_level:
1384 * @range: A #GtkRange
1385 * @restrict_to_fill_level: Whether the fill level restricts slider movement.
1387 * Sets whether the slider is restricted to the fill level. See
1388 * gtk_range_set_fill_level() for a general description of the fill
1394 gtk_range_set_restrict_to_fill_level (GtkRange *range,
1395 gboolean restrict_to_fill_level)
1397 GtkRangePrivate *priv;
1399 g_return_if_fail (GTK_IS_RANGE (range));
1403 restrict_to_fill_level = restrict_to_fill_level ? TRUE : FALSE;
1405 if (restrict_to_fill_level != priv->restrict_to_fill_level)
1407 priv->restrict_to_fill_level = restrict_to_fill_level;
1408 g_object_notify (G_OBJECT (range), "restrict-to-fill-level");
1410 gtk_range_set_value (range, gtk_range_get_value (range));
1415 * gtk_range_get_restrict_to_fill_level:
1416 * @range: A #GtkRange
1418 * Gets whether the range is restricted to the fill level.
1420 * Return value: %TRUE if @range is restricted to the fill level.
1425 gtk_range_get_restrict_to_fill_level (GtkRange *range)
1427 g_return_val_if_fail (GTK_IS_RANGE (range), FALSE);
1429 return range->priv->restrict_to_fill_level;
1433 * gtk_range_set_fill_level:
1434 * @range: a #GtkRange
1435 * @fill_level: the new position of the fill level indicator
1437 * Set the new position of the fill level indicator.
1439 * The "fill level" is probably best described by its most prominent
1440 * use case, which is an indicator for the amount of pre-buffering in
1441 * a streaming media player. In that use case, the value of the range
1442 * would indicate the current play position, and the fill level would
1443 * be the position up to which the file/stream has been downloaded.
1445 * This amount of prebuffering can be displayed on the range's trough
1446 * and is themeable separately from the trough. To enable fill level
1447 * display, use gtk_range_set_show_fill_level(). The range defaults
1448 * to not showing the fill level.
1450 * Additionally, it's possible to restrict the range's slider position
1451 * to values which are smaller than the fill level. This is controller
1452 * by gtk_range_set_restrict_to_fill_level() and is by default
1458 gtk_range_set_fill_level (GtkRange *range,
1461 GtkRangePrivate *priv;
1463 g_return_if_fail (GTK_IS_RANGE (range));
1467 if (fill_level != priv->fill_level)
1469 priv->fill_level = fill_level;
1470 g_object_notify (G_OBJECT (range), "fill-level");
1472 if (priv->show_fill_level)
1473 gtk_widget_queue_draw (GTK_WIDGET (range));
1475 if (priv->restrict_to_fill_level)
1476 gtk_range_set_value (range, gtk_range_get_value (range));
1481 * gtk_range_get_fill_level:
1482 * @range: A #GtkRange
1484 * Gets the current position of the fill level indicator.
1486 * Return value: The current fill level
1491 gtk_range_get_fill_level (GtkRange *range)
1493 g_return_val_if_fail (GTK_IS_RANGE (range), 0.0);
1495 return range->priv->fill_level;
1499 should_invert (GtkRange *range)
1501 GtkRangePrivate *priv = range->priv;
1503 if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
1505 (priv->inverted && !priv->flippable) ||
1506 (priv->inverted && priv->flippable && gtk_widget_get_direction (GTK_WIDGET (range)) == GTK_TEXT_DIR_LTR) ||
1507 (!priv->inverted && priv->flippable && gtk_widget_get_direction (GTK_WIDGET (range)) == GTK_TEXT_DIR_RTL);
1509 return priv->inverted;
1513 gtk_range_destroy (GtkObject *object)
1515 GtkRange *range = GTK_RANGE (object);
1516 GtkRangePrivate *priv = range->priv;
1518 gtk_range_remove_step_timer (range);
1519 gtk_range_remove_update_timer (range);
1521 if (priv->repaint_id)
1522 g_source_remove (priv->repaint_id);
1523 priv->repaint_id = 0;
1525 if (priv->adjustment)
1527 g_signal_handlers_disconnect_by_func (priv->adjustment,
1528 gtk_range_adjustment_changed,
1530 g_signal_handlers_disconnect_by_func (priv->adjustment,
1531 gtk_range_adjustment_value_changed,
1533 g_object_unref (priv->adjustment);
1534 priv->adjustment = NULL;
1539 g_free (priv->marks);
1541 g_free (priv->mark_pos);
1542 priv->mark_pos = NULL;
1546 GTK_OBJECT_CLASS (gtk_range_parent_class)->destroy (object);
1550 gtk_range_size_request (GtkWidget *widget,
1551 GtkRequisition *requisition)
1554 gint slider_width, stepper_size, focus_width, trough_border, stepper_spacing;
1555 GdkRectangle range_rect;
1558 range = GTK_RANGE (widget);
1560 gtk_range_get_props (range,
1561 &slider_width, &stepper_size,
1562 &focus_width, &trough_border,
1563 &stepper_spacing, NULL,
1566 gtk_range_calc_request (range,
1567 slider_width, stepper_size,
1568 focus_width, trough_border, stepper_spacing,
1569 &range_rect, &border, NULL, NULL, NULL, NULL);
1571 requisition->width = range_rect.width + border.left + border.right;
1572 requisition->height = range_rect.height + border.top + border.bottom;
1576 gtk_range_size_allocate (GtkWidget *widget,
1577 GtkAllocation *allocation)
1579 GtkRange *range = GTK_RANGE (widget);
1580 GtkRangePrivate *priv = range->priv;
1582 gtk_widget_set_allocation (widget, allocation);
1584 priv->recalc_marks = TRUE;
1586 priv->need_recalc = TRUE;
1587 gtk_range_calc_layout (range, priv->adjustment->value);
1589 if (gtk_widget_get_realized (widget))
1590 gdk_window_move_resize (priv->event_window,
1591 allocation->x, allocation->y,
1592 allocation->width, allocation->height);
1596 gtk_range_realize (GtkWidget *widget)
1598 GtkAllocation allocation;
1599 GtkRange *range = GTK_RANGE (widget);
1600 GtkRangePrivate *priv = range->priv;
1602 GdkWindowAttr attributes;
1603 gint attributes_mask;
1605 gtk_range_calc_layout (range, priv->adjustment->value);
1607 gtk_widget_set_realized (widget, TRUE);
1609 window = gtk_widget_get_parent_window (widget);
1610 gtk_widget_set_window (widget, window);
1611 g_object_ref (window);
1613 gtk_widget_get_allocation (widget, &allocation);
1615 attributes.window_type = GDK_WINDOW_CHILD;
1616 attributes.x = allocation.x;
1617 attributes.y = allocation.y;
1618 attributes.width = allocation.width;
1619 attributes.height = allocation.height;
1620 attributes.wclass = GDK_INPUT_ONLY;
1621 attributes.event_mask = gtk_widget_get_events (widget);
1622 attributes.event_mask |= (GDK_BUTTON_PRESS_MASK |
1623 GDK_BUTTON_RELEASE_MASK |
1624 GDK_ENTER_NOTIFY_MASK |
1625 GDK_LEAVE_NOTIFY_MASK |
1626 GDK_POINTER_MOTION_MASK |
1627 GDK_POINTER_MOTION_HINT_MASK);
1629 attributes_mask = GDK_WA_X | GDK_WA_Y;
1631 priv->event_window = gdk_window_new (gtk_widget_get_parent_window (widget),
1632 &attributes, attributes_mask);
1633 gdk_window_set_user_data (priv->event_window, range);
1635 gtk_widget_style_attach (widget);
1639 gtk_range_unrealize (GtkWidget *widget)
1641 GtkRange *range = GTK_RANGE (widget);
1642 GtkRangePrivate *priv = range->priv;
1644 gtk_range_remove_step_timer (range);
1645 gtk_range_remove_update_timer (range);
1647 gdk_window_set_user_data (priv->event_window, NULL);
1648 gdk_window_destroy (priv->event_window);
1649 priv->event_window = NULL;
1651 GTK_WIDGET_CLASS (gtk_range_parent_class)->unrealize (widget);
1655 gtk_range_map (GtkWidget *widget)
1657 GtkRange *range = GTK_RANGE (widget);
1658 GtkRangePrivate *priv = range->priv;
1660 gdk_window_show (priv->event_window);
1662 GTK_WIDGET_CLASS (gtk_range_parent_class)->map (widget);
1666 gtk_range_unmap (GtkWidget *widget)
1668 GtkRange *range = GTK_RANGE (widget);
1669 GtkRangePrivate *priv = range->priv;
1671 stop_scrolling (range);
1673 gdk_window_hide (priv->event_window);
1675 GTK_WIDGET_CLASS (gtk_range_parent_class)->unmap (widget);
1678 static const gchar *
1679 gtk_range_get_slider_detail (GtkRange *range)
1681 GtkRangePrivate *priv = range->priv;
1682 const gchar *slider_detail;
1684 if (priv->slider_detail_quark)
1685 return g_quark_to_string (priv->slider_detail_quark);
1687 slider_detail = GTK_RANGE_GET_CLASS (range)->slider_detail;
1689 if (slider_detail && slider_detail[0] == 'X')
1691 gchar *detail = g_strdup (slider_detail);
1693 detail[0] = priv->orientation == GTK_ORIENTATION_HORIZONTAL ? 'h' : 'v';
1695 priv->slider_detail_quark = g_quark_from_string (detail);
1699 return g_quark_to_string (priv->slider_detail_quark);
1702 return slider_detail;
1705 static const gchar *
1706 gtk_range_get_stepper_detail (GtkRange *range,
1709 GtkRangePrivate *priv = range->priv;
1710 const gchar *stepper_detail;
1712 const gchar *position = NULL;
1714 if (priv->stepper_detail_quark[stepper])
1715 return g_quark_to_string (priv->stepper_detail_quark[stepper]);
1717 stepper_detail = GTK_RANGE_GET_CLASS (range)->stepper_detail;
1722 position = "_start";
1725 if (priv->has_stepper_a)
1726 position = "_start_inner";
1728 position = "_start";
1731 if (priv->has_stepper_d)
1732 position = "_end_inner";
1740 g_assert_not_reached ();
1743 detail = g_strconcat (stepper_detail, position, NULL);
1745 if (detail[0] == 'X')
1746 detail[0] = priv->orientation == GTK_ORIENTATION_HORIZONTAL ? 'h' : 'v';
1748 priv->stepper_detail_quark[stepper] = g_quark_from_string (detail);
1752 return g_quark_to_string (priv->stepper_detail_quark[stepper]);
1756 draw_stepper (GtkRange *range,
1759 GtkArrowType arrow_type,
1761 gboolean prelighted)
1763 GtkRangePrivate *priv = range->priv;
1764 GtkAllocation allocation;
1765 GtkStateType state_type;
1766 GtkShadowType shadow_type;
1768 GtkWidget *widget = GTK_WIDGET (range);
1770 gfloat arrow_scaling;
1780 rect = &priv->stepper_a;
1783 rect = &priv->stepper_b;
1786 rect = &priv->stepper_c;
1789 rect = &priv->stepper_d;
1792 g_assert_not_reached ();
1795 gboolean arrow_sensitive = TRUE;
1797 gtk_widget_get_allocation (widget, &allocation);
1799 if ((!priv->inverted && (arrow_type == GTK_ARROW_DOWN ||
1800 arrow_type == GTK_ARROW_RIGHT)) ||
1801 (priv->inverted && (arrow_type == GTK_ARROW_UP ||
1802 arrow_type == GTK_ARROW_LEFT)))
1804 arrow_sensitive = priv->upper_sensitive;
1808 arrow_sensitive = priv->lower_sensitive;
1811 if (!gtk_widget_is_sensitive (GTK_WIDGET (range)) || !arrow_sensitive)
1812 state_type = GTK_STATE_INSENSITIVE;
1814 state_type = GTK_STATE_ACTIVE;
1815 else if (prelighted)
1816 state_type = GTK_STATE_PRELIGHT;
1818 state_type = GTK_STATE_NORMAL;
1820 if (clicked && arrow_sensitive)
1821 shadow_type = GTK_SHADOW_IN;
1823 shadow_type = GTK_SHADOW_OUT;
1825 style = gtk_widget_get_style (widget);
1826 window = gtk_widget_get_window (widget);
1828 gtk_paint_box (style, cr,
1829 state_type, shadow_type,
1831 gtk_range_get_stepper_detail (range, stepper),
1837 gtk_widget_style_get (widget, "arrow-scaling", &arrow_scaling, NULL);
1839 arrow_width = rect->width * arrow_scaling;
1840 arrow_height = rect->height * arrow_scaling;
1841 arrow_x = rect->x + (rect->width - arrow_width) / 2;
1842 arrow_y = rect->y + (rect->height - arrow_height) / 2;
1844 if (clicked && arrow_sensitive)
1846 gint arrow_displacement_x;
1847 gint arrow_displacement_y;
1849 gtk_range_get_props (GTK_RANGE (widget),
1850 NULL, NULL, NULL, NULL, NULL, NULL,
1851 &arrow_displacement_x, &arrow_displacement_y);
1853 arrow_x += arrow_displacement_x;
1854 arrow_y += arrow_displacement_y;
1857 gtk_paint_arrow (style, cr,
1858 state_type, shadow_type,
1860 gtk_range_get_stepper_detail (range, stepper),
1863 arrow_x, arrow_y, arrow_width, arrow_height);
1867 gtk_range_draw (GtkWidget *widget,
1870 GtkRange *range = GTK_RANGE (widget);
1871 GtkRangePrivate *priv = range->priv;
1874 GtkShadowType shadow_type;
1877 gint focus_line_width = 0;
1878 gint focus_padding = 0;
1879 gboolean touchscreen;
1881 g_object_get (gtk_widget_get_settings (widget),
1882 "gtk-touchscreen-mode", &touchscreen,
1885 style = gtk_widget_get_style (widget);
1886 if (gtk_widget_get_can_focus (GTK_WIDGET (range)))
1887 gtk_widget_style_get (GTK_WIDGET (range),
1888 "focus-line-width", &focus_line_width,
1889 "focus-padding", &focus_padding,
1892 window = gtk_widget_get_window (widget);
1894 /* we're now exposing, so there's no need to force early repaints */
1895 if (priv->repaint_id)
1896 g_source_remove (priv->repaint_id);
1897 priv->repaint_id = 0;
1899 gtk_range_calc_marks (range);
1900 gtk_range_calc_layout (range, priv->adjustment->value);
1902 sensitive = gtk_widget_is_sensitive (widget);
1904 /* Just to be confusing, we draw the trough for the whole
1905 * range rectangle, not the trough rectangle (the trough
1906 * rectangle is just for hit detection)
1909 gdk_cairo_rectangle (cr, &priv->range_rect);
1913 gint x = (priv->range_rect.x +
1914 focus_line_width + focus_padding);
1915 gint y = (priv->range_rect.y +
1916 focus_line_width + focus_padding);
1917 gint width = (priv->range_rect.width -
1918 2 * (focus_line_width + focus_padding));
1919 gint height = (priv->range_rect.height -
1920 2 * (focus_line_width + focus_padding));
1921 gboolean trough_under_steppers;
1923 gint stepper_spacing;
1925 gtk_widget_style_get (GTK_WIDGET (range),
1926 "trough-under-steppers", &trough_under_steppers,
1927 "stepper-size", &stepper_size,
1928 "stepper-spacing", &stepper_spacing,
1931 if (stepper_spacing > 0)
1932 trough_under_steppers = FALSE;
1934 if (!trough_under_steppers)
1939 if (priv->has_stepper_a)
1940 offset += stepper_size;
1942 if (priv->has_stepper_b)
1943 offset += stepper_size;
1947 if (priv->has_stepper_c)
1948 shorter += stepper_size;
1950 if (priv->has_stepper_d)
1951 shorter += stepper_size;
1953 if (priv->has_stepper_a || priv->has_stepper_b)
1955 offset += stepper_spacing;
1956 shorter += stepper_spacing;
1959 if (priv->has_stepper_c || priv->has_stepper_d)
1961 shorter += stepper_spacing;
1964 if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
1977 gint trough_change_pos_x = width;
1978 gint trough_change_pos_y = height;
1980 if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
1981 trough_change_pos_x = (priv->slider.x +
1982 priv->slider.width / 2 -
1985 trough_change_pos_y = (priv->slider.y +
1986 priv->slider.height / 2 -
1989 gtk_paint_box (style, cr,
1990 sensitive ? GTK_STATE_ACTIVE : GTK_STATE_INSENSITIVE,
1993 should_invert (range) ? "trough-upper" : "trough-lower",
1995 trough_change_pos_x, trough_change_pos_y);
1997 if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
1998 trough_change_pos_y = 0;
2000 trough_change_pos_x = 0;
2002 gtk_paint_box (style, cr,
2003 sensitive ? GTK_STATE_ACTIVE : GTK_STATE_INSENSITIVE,
2006 should_invert (range) ? "trough-lower" : "trough-upper",
2007 x + trough_change_pos_x, y + trough_change_pos_y,
2008 width - trough_change_pos_x,
2009 height - trough_change_pos_y);
2012 if (priv->show_fill_level &&
2013 priv->adjustment->upper - priv->adjustment->page_size -
2014 priv->adjustment->lower != 0)
2016 gdouble fill_level = priv->fill_level;
2019 gint fill_width = width;
2020 gint fill_height = height;
2023 fill_level = CLAMP (fill_level, priv->adjustment->lower,
2024 priv->adjustment->upper -
2025 priv->adjustment->page_size);
2027 if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
2029 fill_x = priv->trough.x;
2030 fill_width = (priv->slider.width +
2031 (fill_level - priv->adjustment->lower) /
2032 (priv->adjustment->upper -
2033 priv->adjustment->lower -
2034 priv->adjustment->page_size) *
2035 (priv->trough.width -
2036 priv->slider.width));
2038 if (should_invert (range))
2039 fill_x += priv->trough.width - fill_width;
2043 fill_y = priv->trough.y;
2044 fill_height = (priv->slider.height +
2045 (fill_level - priv->adjustment->lower) /
2046 (priv->adjustment->upper -
2047 priv->adjustment->lower -
2048 priv->adjustment->page_size) *
2049 (priv->trough.height -
2050 priv->slider.height));
2052 if (should_invert (range))
2053 fill_y += priv->trough.height - fill_height;
2056 if (fill_level < priv->adjustment->upper - priv->adjustment->page_size)
2057 fill_detail = "trough-fill-level-full";
2059 fill_detail = "trough-fill-level";
2061 gtk_paint_box (style, cr,
2062 sensitive ? GTK_STATE_ACTIVE : GTK_STATE_INSENSITIVE,
2064 GTK_WIDGET (range), fill_detail,
2066 fill_width, fill_height);
2069 if (sensitive && gtk_widget_has_focus (widget))
2070 gtk_paint_focus (style, cr,
2071 gtk_widget_get_state (widget),
2075 priv->range_rect.width,
2076 priv->range_rect.height);
2081 shadow_type = GTK_SHADOW_OUT;
2084 state = GTK_STATE_INSENSITIVE;
2085 else if (!touchscreen && priv->mouse_location == MOUSE_SLIDER)
2086 state = GTK_STATE_PRELIGHT;
2088 state = GTK_STATE_NORMAL;
2090 if (priv->grab_location == MOUSE_SLIDER)
2092 state = GTK_STATE_ACTIVE;
2093 shadow_type = GTK_SHADOW_IN;
2097 gdk_cairo_rectangle (cr, &priv->slider);
2101 gtk_paint_slider (style,
2106 gtk_range_get_slider_detail (range),
2110 priv->slider.height,
2116 if (priv->has_stepper_a)
2117 draw_stepper (range, STEPPER_A, cr,
2118 priv->orientation == GTK_ORIENTATION_VERTICAL ? GTK_ARROW_UP : GTK_ARROW_LEFT,
2119 priv->grab_location == MOUSE_STEPPER_A,
2120 !touchscreen && priv->mouse_location == MOUSE_STEPPER_A);
2122 if (priv->has_stepper_b)
2123 draw_stepper (range, STEPPER_B, cr,
2124 priv->orientation == GTK_ORIENTATION_VERTICAL ? GTK_ARROW_DOWN : GTK_ARROW_RIGHT,
2125 priv->grab_location == MOUSE_STEPPER_B,
2126 !touchscreen && priv->mouse_location == MOUSE_STEPPER_B);
2128 if (priv->has_stepper_c)
2129 draw_stepper (range, STEPPER_C, cr,
2130 priv->orientation == GTK_ORIENTATION_VERTICAL ? GTK_ARROW_UP : GTK_ARROW_LEFT,
2131 priv->grab_location == MOUSE_STEPPER_C,
2132 !touchscreen && priv->mouse_location == MOUSE_STEPPER_C);
2134 if (priv->has_stepper_d)
2135 draw_stepper (range, STEPPER_D, cr,
2136 priv->orientation == GTK_ORIENTATION_VERTICAL ? GTK_ARROW_DOWN : GTK_ARROW_RIGHT,
2137 priv->grab_location == MOUSE_STEPPER_D,
2138 !touchscreen && priv->mouse_location == MOUSE_STEPPER_D);
2144 range_grab_add (GtkRange *range,
2146 MouseLocation location,
2149 GtkRangePrivate *priv = range->priv;
2151 if (device == priv->grab_device)
2154 if (priv->grab_device != NULL)
2156 g_warning ("GtkRange already had a grab device, releasing device grab");
2157 gtk_device_grab_remove (GTK_WIDGET (range), priv->grab_device);
2160 /* we don't actually gdk_grab, since a button is down */
2161 gtk_device_grab_add (GTK_WIDGET (range), device, TRUE);
2163 priv->grab_location = location;
2164 priv->grab_button = button;
2165 priv->grab_device = device;
2167 if (gtk_range_update_mouse_location (range))
2168 gtk_widget_queue_draw (GTK_WIDGET (range));
2172 range_grab_remove (GtkRange *range)
2174 GtkRangePrivate *priv = range->priv;
2175 MouseLocation location;
2177 if (priv->grab_device)
2179 gtk_device_grab_remove (GTK_WIDGET (range),
2181 priv->grab_device = NULL;
2184 location = priv->grab_location;
2185 priv->grab_location = MOUSE_OUTSIDE;
2186 priv->grab_button = 0;
2188 if (gtk_range_update_mouse_location (range) ||
2189 location != MOUSE_OUTSIDE)
2190 gtk_widget_queue_draw (GTK_WIDGET (range));
2193 static GtkScrollType
2194 range_get_scroll_for_grab (GtkRange *range)
2196 GtkRangePrivate *priv = range->priv;
2199 invert = should_invert (range);
2200 switch (priv->grab_location)
2202 /* Backward stepper */
2203 case MOUSE_STEPPER_A:
2204 case MOUSE_STEPPER_C:
2205 switch (priv->grab_button)
2208 return invert ? GTK_SCROLL_STEP_FORWARD : GTK_SCROLL_STEP_BACKWARD;
2211 return invert ? GTK_SCROLL_PAGE_FORWARD : GTK_SCROLL_PAGE_BACKWARD;
2214 return invert ? GTK_SCROLL_END : GTK_SCROLL_START;
2219 /* Forward stepper */
2220 case MOUSE_STEPPER_B:
2221 case MOUSE_STEPPER_D:
2222 switch (priv->grab_button)
2225 return invert ? GTK_SCROLL_STEP_BACKWARD : GTK_SCROLL_STEP_FORWARD;
2228 return invert ? GTK_SCROLL_PAGE_BACKWARD : GTK_SCROLL_PAGE_FORWARD;
2231 return invert ? GTK_SCROLL_START : GTK_SCROLL_END;
2239 if (priv->trough_click_forward)
2240 return GTK_SCROLL_PAGE_FORWARD;
2242 return GTK_SCROLL_PAGE_BACKWARD;
2252 return GTK_SCROLL_NONE;
2256 coord_to_value (GtkRange *range,
2259 GtkRangePrivate *priv = range->priv;
2266 gint trough_under_steppers;
2268 if (priv->orientation == GTK_ORIENTATION_VERTICAL)
2270 trough_length = priv->trough.height;
2271 trough_start = priv->trough.y;
2272 slider_length = priv->slider.height;
2276 trough_length = priv->trough.width;
2277 trough_start = priv->trough.x;
2278 slider_length = priv->slider.width;
2281 gtk_range_get_props (range, NULL, NULL, NULL, &trough_border, NULL,
2282 &trough_under_steppers, NULL, NULL);
2284 if (! trough_under_steppers)
2286 trough_start += trough_border;
2287 trough_length -= 2 * trough_border;
2290 if (trough_length == slider_length)
2293 frac = (MAX (0, coord - trough_start) /
2294 (gdouble) (trough_length - slider_length));
2296 if (should_invert (range))
2299 value = priv->adjustment->lower + frac * (priv->adjustment->upper -
2300 priv->adjustment->lower -
2301 priv->adjustment->page_size);
2307 gtk_range_key_press (GtkWidget *widget,
2311 GtkRange *range = GTK_RANGE (widget);
2312 GtkRangePrivate *priv = range->priv;
2314 device = gdk_event_get_device ((GdkEvent *) event);
2315 device = gdk_device_get_associated_device (device);
2317 if (device == priv->grab_device &&
2318 event->keyval == GDK_KEY_Escape &&
2319 priv->grab_location != MOUSE_OUTSIDE)
2321 stop_scrolling (range);
2323 update_slider_position (range,
2324 priv->slide_initial_coordinate,
2325 priv->slide_initial_coordinate);
2330 return GTK_WIDGET_CLASS (gtk_range_parent_class)->key_press_event (widget, event);
2334 gtk_range_button_press (GtkWidget *widget,
2335 GdkEventButton *event)
2337 GtkRange *range = GTK_RANGE (widget);
2338 GtkRangePrivate *priv = range->priv;
2341 if (!gtk_widget_has_focus (widget))
2342 gtk_widget_grab_focus (widget);
2344 /* ignore presses when we're already doing something else. */
2345 if (priv->grab_location != MOUSE_OUTSIDE)
2348 device = gdk_event_get_device ((GdkEvent *) event);
2349 priv->mouse_x = event->x;
2350 priv->mouse_y = event->y;
2352 if (gtk_range_update_mouse_location (range))
2353 gtk_widget_queue_draw (widget);
2355 if (priv->mouse_location == MOUSE_TROUGH &&
2358 /* button 1 steps by page increment, as with button 2 on a stepper
2360 GtkScrollType scroll;
2361 gdouble click_value;
2363 click_value = coord_to_value (range,
2364 priv->orientation == GTK_ORIENTATION_VERTICAL ?
2365 event->y : event->x);
2367 priv->trough_click_forward = click_value > priv->adjustment->value;
2368 range_grab_add (range, device, MOUSE_TROUGH, event->button);
2370 scroll = range_get_scroll_for_grab (range);
2372 gtk_range_add_step_timer (range, scroll);
2376 else if ((priv->mouse_location == MOUSE_STEPPER_A ||
2377 priv->mouse_location == MOUSE_STEPPER_B ||
2378 priv->mouse_location == MOUSE_STEPPER_C ||
2379 priv->mouse_location == MOUSE_STEPPER_D) &&
2380 (event->button == 1 || event->button == 2 || event->button == 3))
2382 GtkAllocation allocation;
2383 GdkRectangle *stepper_area;
2384 GtkScrollType scroll;
2386 range_grab_add (range, device, priv->mouse_location, event->button);
2388 gtk_widget_get_allocation (widget, &allocation);
2389 stepper_area = get_area (range, priv->mouse_location);
2391 gtk_widget_queue_draw_area (widget,
2392 allocation.x + stepper_area->x,
2393 allocation.y + stepper_area->y,
2394 stepper_area->width,
2395 stepper_area->height);
2397 scroll = range_get_scroll_for_grab (range);
2398 if (scroll != GTK_SCROLL_NONE)
2399 gtk_range_add_step_timer (range, scroll);
2403 else if ((priv->mouse_location == MOUSE_TROUGH &&
2404 event->button == 2) ||
2405 priv->mouse_location == MOUSE_SLIDER)
2407 gboolean need_value_update = FALSE;
2409 /* Any button can be used to drag the slider, but you can start
2410 * dragging the slider with a trough click using button 2;
2411 * On button 2 press, we warp the slider to mouse position,
2412 * then begin the slider drag.
2414 if (event->button == 2)
2416 gdouble slider_low_value, slider_high_value, new_value;
2419 coord_to_value (range,
2420 priv->orientation == GTK_ORIENTATION_VERTICAL ?
2421 event->y : event->x);
2423 coord_to_value (range,
2424 priv->orientation == GTK_ORIENTATION_VERTICAL ?
2425 event->y - priv->slider.height :
2426 event->x - priv->slider.width);
2428 /* compute new value for warped slider */
2429 new_value = slider_low_value + (slider_high_value - slider_low_value) / 2;
2431 /* recalc slider, so we can set slide_initial_slider_position
2434 priv->need_recalc = TRUE;
2435 gtk_range_calc_layout (range, new_value);
2437 /* defer adjustment updates to update_slider_position() in order
2438 * to keep pixel quantisation
2440 need_value_update = TRUE;
2443 if (priv->orientation == GTK_ORIENTATION_VERTICAL)
2445 priv->slide_initial_slider_position = priv->slider.y;
2446 priv->slide_initial_coordinate = event->y;
2450 priv->slide_initial_slider_position = priv->slider.x;
2451 priv->slide_initial_coordinate = event->x;
2454 range_grab_add (range, device, MOUSE_SLIDER, event->button);
2456 gtk_widget_queue_draw (widget);
2458 if (need_value_update)
2459 update_slider_position (range, event->x, event->y);
2467 /* During a slide, move the slider as required given new mouse position */
2469 update_slider_position (GtkRange *range,
2473 GtkRangePrivate *priv = range->priv;
2483 if (priv->orientation == GTK_ORIENTATION_VERTICAL)
2484 delta = mouse_y - priv->slide_initial_coordinate;
2486 delta = mouse_x - priv->slide_initial_coordinate;
2488 c = priv->slide_initial_slider_position + delta;
2490 new_value = coord_to_value (range, c);
2491 next_value = coord_to_value (range, c + 1);
2492 mark_delta = fabs (next_value - new_value);
2494 for (i = 0; i < priv->n_marks; i++)
2496 mark_value = priv->marks[i];
2498 if (fabs (priv->adjustment->value - mark_value) < 3 * mark_delta)
2500 if (fabs (new_value - mark_value) < (priv->slider_end - priv->slider_start) * 0.5 * mark_delta)
2502 new_value = mark_value;
2508 g_signal_emit (range, signals[CHANGE_VALUE], 0, GTK_SCROLL_JUMP, new_value,
2513 stop_scrolling (GtkRange *range)
2515 range_grab_remove (range);
2516 gtk_range_remove_step_timer (range);
2517 /* Flush any pending discontinuous/delayed updates */
2518 gtk_range_update_value (range);
2522 gtk_range_grab_broken (GtkWidget *widget,
2523 GdkEventGrabBroken *event)
2525 GtkRange *range = GTK_RANGE (widget);
2526 GtkRangePrivate *priv = range->priv;
2529 device = gdk_event_get_device ((GdkEvent *) event);
2531 if (device == priv->grab_device &&
2532 priv->grab_location != MOUSE_OUTSIDE)
2534 if (priv->grab_location == MOUSE_SLIDER)
2535 update_slider_position (range, priv->mouse_x, priv->mouse_y);
2537 stop_scrolling (range);
2546 gtk_range_button_release (GtkWidget *widget,
2547 GdkEventButton *event)
2549 GtkRange *range = GTK_RANGE (widget);
2550 GtkRangePrivate *priv = range->priv;
2553 if (event->window == priv->event_window)
2555 priv->mouse_x = event->x;
2556 priv->mouse_y = event->y;
2560 gdk_window_get_device_position (priv->event_window,
2567 device = gdk_event_get_device ((GdkEvent *) event);
2569 if (priv->grab_device == device &&
2570 priv->grab_button == event->button)
2572 if (priv->grab_location == MOUSE_SLIDER)
2573 update_slider_position (range, priv->mouse_x, priv->mouse_y);
2575 stop_scrolling (range);
2584 * _gtk_range_get_wheel_delta:
2585 * @range: a #GtkRange
2586 * @direction: A #GdkScrollDirection
2588 * Returns a good step value for the mouse wheel.
2590 * Return value: A good step value for the mouse wheel.
2595 _gtk_range_get_wheel_delta (GtkRange *range,
2596 GdkScrollDirection direction)
2598 GtkRangePrivate *priv = range->priv;
2599 GtkAdjustment *adj = priv->adjustment;
2602 if (GTK_IS_SCROLLBAR (range))
2603 delta = pow (adj->page_size, 2.0 / 3.0);
2605 delta = adj->step_increment * 2;
2607 if (direction == GDK_SCROLL_UP ||
2608 direction == GDK_SCROLL_LEFT)
2618 gtk_range_scroll_event (GtkWidget *widget,
2619 GdkEventScroll *event)
2621 GtkRange *range = GTK_RANGE (widget);
2622 GtkRangePrivate *priv = range->priv;
2624 if (gtk_widget_get_realized (widget))
2626 GtkAdjustment *adj = priv->adjustment;
2630 delta = _gtk_range_get_wheel_delta (range, event->direction);
2632 g_signal_emit (range, signals[CHANGE_VALUE], 0,
2633 GTK_SCROLL_JUMP, adj->value + delta,
2636 /* Policy DELAYED makes sense with scroll events,
2637 * but DISCONTINUOUS doesn't, so we update immediately
2640 if (priv->update_policy == GTK_UPDATE_DISCONTINUOUS)
2641 gtk_range_update_value (range);
2648 gtk_range_motion_notify (GtkWidget *widget,
2649 GdkEventMotion *event)
2651 GtkRange *range = GTK_RANGE (widget);
2652 GtkRangePrivate *priv = range->priv;
2654 gdk_event_request_motions (event);
2656 priv->mouse_x = event->x;
2657 priv->mouse_y = event->y;
2659 if (gtk_range_update_mouse_location (range))
2660 gtk_widget_queue_draw (widget);
2662 if (priv->grab_location == MOUSE_SLIDER)
2663 update_slider_position (range, event->x, event->y);
2665 /* We handled the event if the mouse was in the range_rect */
2666 return priv->mouse_location != MOUSE_OUTSIDE;
2670 gtk_range_enter_notify (GtkWidget *widget,
2671 GdkEventCrossing *event)
2673 GtkRange *range = GTK_RANGE (widget);
2674 GtkRangePrivate *priv = range->priv;
2676 priv->mouse_x = event->x;
2677 priv->mouse_y = event->y;
2679 if (gtk_range_update_mouse_location (range))
2680 gtk_widget_queue_draw (widget);
2686 gtk_range_leave_notify (GtkWidget *widget,
2687 GdkEventCrossing *event)
2689 GtkRange *range = GTK_RANGE (widget);
2690 GtkRangePrivate *priv = range->priv;
2695 if (gtk_range_update_mouse_location (range))
2696 gtk_widget_queue_draw (widget);
2702 gtk_range_grab_notify (GtkWidget *widget,
2703 gboolean was_grabbed)
2705 GtkRangePrivate *priv = GTK_RANGE (widget)->priv;
2707 if (priv->grab_device &&
2708 gtk_widget_device_is_shadowed (widget, priv->grab_device))
2709 stop_scrolling (GTK_RANGE (widget));
2713 gtk_range_state_changed (GtkWidget *widget,
2714 GtkStateType previous_state)
2716 if (!gtk_widget_is_sensitive (widget))
2717 stop_scrolling (GTK_RANGE (widget));
2720 #define check_rectangle(rectangle1, rectangle2) \
2722 if (rectangle1.x != rectangle2.x) return TRUE; \
2723 if (rectangle1.y != rectangle2.y) return TRUE; \
2724 if (rectangle1.width != rectangle2.width) return TRUE; \
2725 if (rectangle1.height != rectangle2.height) return TRUE; \
2729 layout_changed (GtkRangePrivate *priv1,
2730 GtkRangePrivate *priv2)
2732 check_rectangle (priv1->slider, priv2->slider);
2733 check_rectangle (priv1->trough, priv2->trough);
2734 check_rectangle (priv1->stepper_a, priv2->stepper_a);
2735 check_rectangle (priv1->stepper_d, priv2->stepper_d);
2736 check_rectangle (priv1->stepper_b, priv2->stepper_b);
2737 check_rectangle (priv1->stepper_c, priv2->stepper_c);
2739 if (priv1->upper_sensitive != priv2->upper_sensitive) return TRUE;
2740 if (priv1->lower_sensitive != priv2->lower_sensitive) return TRUE;
2746 gtk_range_adjustment_changed (GtkAdjustment *adjustment,
2749 GtkRange *range = GTK_RANGE (data);
2750 GtkRangePrivate *priv = range->priv;
2751 GtkRangePrivate priv_aux = *priv;
2753 priv->recalc_marks = TRUE;
2754 priv->need_recalc = TRUE;
2755 gtk_range_calc_layout (range, priv->adjustment->value);
2757 /* now check whether the layout changed */
2758 if (layout_changed (priv, &priv_aux))
2759 gtk_widget_queue_draw (GTK_WIDGET (range));
2761 /* Note that we don't round off to priv->round_digits here.
2762 * that's because it's really broken to change a value
2763 * in response to a change signal on that value; round_digits
2764 * is therefore defined to be a filter on what the GtkRange
2765 * can input into the adjustment, not a filter that the GtkRange
2766 * will enforce on the adjustment.
2771 force_repaint (gpointer data)
2773 GtkRange *range = GTK_RANGE (data);
2774 GtkRangePrivate *priv = range->priv;
2775 GtkWidget *widget = GTK_WIDGET (range);
2777 priv->repaint_id = 0;
2778 if (gtk_widget_is_drawable (widget))
2779 gdk_window_process_updates (gtk_widget_get_window (widget), FALSE);
2785 gtk_range_adjustment_value_changed (GtkAdjustment *adjustment,
2788 GtkRange *range = GTK_RANGE (data);
2789 GtkRangePrivate *priv = range->priv;
2790 GtkRangePrivate priv_aux = *priv;
2792 priv->need_recalc = TRUE;
2793 gtk_range_calc_layout (range, priv->adjustment->value);
2795 /* now check whether the layout changed */
2796 if (layout_changed (priv, &priv_aux) ||
2797 (GTK_IS_SCALE (range) && gtk_scale_get_draw_value (GTK_SCALE (range))))
2799 gtk_widget_queue_draw (GTK_WIDGET (range));
2800 /* setup a timer to ensure the range isn't lagging too much behind the scroll position */
2801 if (!priv->repaint_id)
2802 priv->repaint_id = gdk_threads_add_timeout_full (GDK_PRIORITY_EVENTS, 181, force_repaint, range, NULL);
2805 /* Note that we don't round off to priv->round_digits here.
2806 * that's because it's really broken to change a value
2807 * in response to a change signal on that value; round_digits
2808 * is therefore defined to be a filter on what the GtkRange
2809 * can input into the adjustment, not a filter that the GtkRange
2810 * will enforce on the adjustment.
2813 g_signal_emit (range, signals[VALUE_CHANGED], 0);
2817 gtk_range_style_set (GtkWidget *widget,
2818 GtkStyle *previous_style)
2820 GtkRange *range = GTK_RANGE (widget);
2821 GtkRangePrivate *priv = range->priv;
2823 priv->need_recalc = TRUE;
2825 GTK_WIDGET_CLASS (gtk_range_parent_class)->style_set (widget, previous_style);
2829 apply_marks (GtkRange *range,
2833 GtkRangePrivate *priv = range->priv;
2837 for (i = 0; i < priv->n_marks; i++)
2839 mark = priv->marks[i];
2840 if ((oldval < mark && mark < *newval) ||
2841 (oldval > mark && mark > *newval))
2850 step_back (GtkRange *range)
2852 GtkRangePrivate *priv = range->priv;
2856 newval = priv->adjustment->value - priv->adjustment->step_increment;
2857 apply_marks (range, priv->adjustment->value, &newval);
2858 g_signal_emit (range, signals[CHANGE_VALUE], 0,
2859 GTK_SCROLL_STEP_BACKWARD, newval, &handled);
2863 step_forward (GtkRange *range)
2865 GtkRangePrivate *priv = range->priv;
2869 newval = priv->adjustment->value + priv->adjustment->step_increment;
2870 apply_marks (range, priv->adjustment->value, &newval);
2871 g_signal_emit (range, signals[CHANGE_VALUE], 0,
2872 GTK_SCROLL_STEP_FORWARD, newval, &handled);
2877 page_back (GtkRange *range)
2879 GtkRangePrivate *priv = range->priv;
2883 newval = priv->adjustment->value - priv->adjustment->page_increment;
2884 apply_marks (range, priv->adjustment->value, &newval);
2885 g_signal_emit (range, signals[CHANGE_VALUE], 0,
2886 GTK_SCROLL_PAGE_BACKWARD, newval, &handled);
2890 page_forward (GtkRange *range)
2892 GtkRangePrivate *priv = range->priv;
2896 newval = priv->adjustment->value + priv->adjustment->page_increment;
2897 apply_marks (range, priv->adjustment->value, &newval);
2898 g_signal_emit (range, signals[CHANGE_VALUE], 0,
2899 GTK_SCROLL_PAGE_FORWARD, newval, &handled);
2903 scroll_begin (GtkRange *range)
2905 GtkRangePrivate *priv = range->priv;
2908 g_signal_emit (range, signals[CHANGE_VALUE], 0,
2909 GTK_SCROLL_START, priv->adjustment->lower,
2914 scroll_end (GtkRange *range)
2916 GtkRangePrivate *priv = range->priv;
2920 newval = priv->adjustment->upper - priv->adjustment->page_size;
2921 g_signal_emit (range, signals[CHANGE_VALUE], 0, GTK_SCROLL_END, newval,
2926 gtk_range_scroll (GtkRange *range,
2927 GtkScrollType scroll)
2929 GtkRangePrivate *priv = range->priv;
2930 gdouble old_value = priv->adjustment->value;
2934 case GTK_SCROLL_STEP_LEFT:
2935 if (should_invert (range))
2936 step_forward (range);
2941 case GTK_SCROLL_STEP_UP:
2942 if (should_invert (range))
2943 step_forward (range);
2948 case GTK_SCROLL_STEP_RIGHT:
2949 if (should_invert (range))
2952 step_forward (range);
2955 case GTK_SCROLL_STEP_DOWN:
2956 if (should_invert (range))
2959 step_forward (range);
2962 case GTK_SCROLL_STEP_BACKWARD:
2966 case GTK_SCROLL_STEP_FORWARD:
2967 step_forward (range);
2970 case GTK_SCROLL_PAGE_LEFT:
2971 if (should_invert (range))
2972 page_forward (range);
2977 case GTK_SCROLL_PAGE_UP:
2978 if (should_invert (range))
2979 page_forward (range);
2984 case GTK_SCROLL_PAGE_RIGHT:
2985 if (should_invert (range))
2988 page_forward (range);
2991 case GTK_SCROLL_PAGE_DOWN:
2992 if (should_invert (range))
2995 page_forward (range);
2998 case GTK_SCROLL_PAGE_BACKWARD:
3002 case GTK_SCROLL_PAGE_FORWARD:
3003 page_forward (range);
3006 case GTK_SCROLL_START:
3007 scroll_begin (range);
3010 case GTK_SCROLL_END:
3014 case GTK_SCROLL_JUMP:
3015 /* Used by CList, range doesn't use it. */
3018 case GTK_SCROLL_NONE:
3022 return priv->adjustment->value != old_value;
3026 gtk_range_move_slider (GtkRange *range,
3027 GtkScrollType scroll)
3029 GtkRangePrivate *priv = range->priv;
3030 gboolean cursor_only;
3032 g_object_get (gtk_widget_get_settings (GTK_WIDGET (range)),
3033 "gtk-keynav-cursor-only", &cursor_only,
3038 GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (range));
3040 if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
3042 if (scroll == GTK_SCROLL_STEP_UP ||
3043 scroll == GTK_SCROLL_STEP_DOWN)
3046 gtk_widget_child_focus (toplevel,
3047 scroll == GTK_SCROLL_STEP_UP ?
3048 GTK_DIR_UP : GTK_DIR_DOWN);
3054 if (scroll == GTK_SCROLL_STEP_LEFT ||
3055 scroll == GTK_SCROLL_STEP_RIGHT)
3058 gtk_widget_child_focus (toplevel,
3059 scroll == GTK_SCROLL_STEP_LEFT ?
3060 GTK_DIR_LEFT : GTK_DIR_RIGHT);
3066 if (! gtk_range_scroll (range, scroll))
3067 gtk_widget_error_bell (GTK_WIDGET (range));
3069 /* Policy DELAYED makes sense with key events,
3070 * but DISCONTINUOUS doesn't, so we update immediately
3073 if (priv->update_policy == GTK_UPDATE_DISCONTINUOUS)
3074 gtk_range_update_value (range);
3078 gtk_range_get_props (GtkRange *range,
3082 gint *trough_border,
3083 gint *stepper_spacing,
3084 gboolean *trough_under_steppers,
3085 gint *arrow_displacement_x,
3086 gint *arrow_displacement_y)
3088 GtkWidget *widget = GTK_WIDGET (range);
3089 gint tmp_slider_width, tmp_stepper_size, tmp_focus_width, tmp_trough_border;
3090 gint tmp_stepper_spacing, tmp_trough_under_steppers;
3091 gint tmp_arrow_displacement_x, tmp_arrow_displacement_y;
3093 gtk_widget_style_get (widget,
3094 "slider-width", &tmp_slider_width,
3095 "trough-border", &tmp_trough_border,
3096 "stepper-size", &tmp_stepper_size,
3097 "stepper-spacing", &tmp_stepper_spacing,
3098 "trough-under-steppers", &tmp_trough_under_steppers,
3099 "arrow-displacement-x", &tmp_arrow_displacement_x,
3100 "arrow-displacement-y", &tmp_arrow_displacement_y,
3103 if (tmp_stepper_spacing > 0)
3104 tmp_trough_under_steppers = FALSE;
3106 if (gtk_widget_get_can_focus (GTK_WIDGET (range)))
3108 gint focus_line_width;
3111 gtk_widget_style_get (GTK_WIDGET (range),
3112 "focus-line-width", &focus_line_width,
3113 "focus-padding", &focus_padding,
3116 tmp_focus_width = focus_line_width + focus_padding;
3120 tmp_focus_width = 0;
3124 *slider_width = tmp_slider_width;
3127 *focus_width = tmp_focus_width;
3130 *trough_border = tmp_trough_border;
3133 *stepper_size = tmp_stepper_size;
3135 if (stepper_spacing)
3136 *stepper_spacing = tmp_stepper_spacing;
3138 if (trough_under_steppers)
3139 *trough_under_steppers = tmp_trough_under_steppers;
3141 if (arrow_displacement_x)
3142 *arrow_displacement_x = tmp_arrow_displacement_x;
3144 if (arrow_displacement_y)
3145 *arrow_displacement_y = tmp_arrow_displacement_y;
3148 #define POINT_IN_RECT(xcoord, ycoord, rect) \
3149 ((xcoord) >= (rect).x && \
3150 (xcoord) < ((rect).x + (rect).width) && \
3151 (ycoord) >= (rect).y && \
3152 (ycoord) < ((rect).y + (rect).height))
3154 /* Update mouse location, return TRUE if it changes */
3156 gtk_range_update_mouse_location (GtkRange *range)
3158 GtkRangePrivate *priv = range->priv;
3159 GtkAllocation allocation;
3162 GtkWidget *widget = GTK_WIDGET (range);
3164 old = priv->mouse_location;
3169 gtk_widget_get_allocation (widget, &allocation);
3171 if (priv->grab_location != MOUSE_OUTSIDE)
3172 priv->mouse_location = priv->grab_location;
3173 else if (POINT_IN_RECT (x, y, priv->stepper_a))
3174 priv->mouse_location = MOUSE_STEPPER_A;
3175 else if (POINT_IN_RECT (x, y, priv->stepper_b))
3176 priv->mouse_location = MOUSE_STEPPER_B;
3177 else if (POINT_IN_RECT (x, y, priv->stepper_c))
3178 priv->mouse_location = MOUSE_STEPPER_C;
3179 else if (POINT_IN_RECT (x, y, priv->stepper_d))
3180 priv->mouse_location = MOUSE_STEPPER_D;
3181 else if (POINT_IN_RECT (x, y, priv->slider))
3182 priv->mouse_location = MOUSE_SLIDER;
3183 else if (POINT_IN_RECT (x, y, priv->trough))
3184 priv->mouse_location = MOUSE_TROUGH;
3185 else if (POINT_IN_RECT (x, y, allocation))
3186 priv->mouse_location = MOUSE_WIDGET;
3188 priv->mouse_location = MOUSE_OUTSIDE;
3190 return old != priv->mouse_location;
3193 /* Clamp rect, border inside widget->allocation, such that we prefer
3194 * to take space from border not rect in all directions, and prefer to
3195 * give space to border over rect in one direction.
3198 clamp_dimensions (GtkWidget *widget,
3201 gboolean border_expands_horizontally)
3203 GtkAllocation allocation;
3204 gint extra, shortage;
3206 g_return_if_fail (rect->x == 0);
3207 g_return_if_fail (rect->y == 0);
3208 g_return_if_fail (rect->width >= 0);
3209 g_return_if_fail (rect->height >= 0);
3211 gtk_widget_get_allocation (widget, &allocation);
3215 extra = allocation.width - border->left - border->right - rect->width;
3218 if (border_expands_horizontally)
3220 border->left += extra / 2;
3221 border->right += extra / 2 + extra % 2;
3225 rect->width += extra;
3229 /* See if we can fit rect, if not kill the border */
3230 shortage = rect->width - allocation.width;
3233 rect->width = allocation.width;
3234 /* lose the border */
3240 /* See if we can fit rect with borders */
3241 shortage = rect->width + border->left + border->right - allocation.width;
3244 /* Shrink borders */
3245 border->left -= shortage / 2;
3246 border->right -= shortage / 2 + shortage % 2;
3252 extra = allocation.height - border->top - border->bottom - rect->height;
3255 if (border_expands_horizontally)
3257 /* don't expand border vertically */
3258 rect->height += extra;
3262 border->top += extra / 2;
3263 border->bottom += extra / 2 + extra % 2;
3267 /* See if we can fit rect, if not kill the border */
3268 shortage = rect->height - allocation.height;
3271 rect->height = allocation.height;
3272 /* lose the border */
3278 /* See if we can fit rect with borders */
3279 shortage = rect->height + border->top + border->bottom - allocation.height;
3282 /* Shrink borders */
3283 border->top -= shortage / 2;
3284 border->bottom -= shortage / 2 + shortage % 2;
3290 gtk_range_calc_request (GtkRange *range,
3295 gint stepper_spacing,
3296 GdkRectangle *range_rect,
3299 gboolean *has_steppers_ab,
3300 gboolean *has_steppers_cd,
3301 gint *slider_length_p)
3303 GtkRangePrivate *priv = range->priv;
3314 if (GTK_RANGE_GET_CLASS (range)->get_range_border)
3315 GTK_RANGE_GET_CLASS (range)->get_range_border (range, border);
3320 if (priv->has_stepper_a)
3322 if (priv->has_stepper_b)
3324 if (priv->has_stepper_c)
3326 if (priv->has_stepper_d)
3329 n_steppers = n_steppers_ab + n_steppers_cd;
3331 slider_length = priv->min_slider_size;
3336 /* We never expand to fill available space in the small dimension
3337 * (i.e. vertical scrollbars are always a fixed width)
3339 if (priv->orientation == GTK_ORIENTATION_VERTICAL)
3341 range_rect->width = (focus_width + trough_border) * 2 + slider_width;
3342 range_rect->height = stepper_size * n_steppers + (focus_width + trough_border) * 2 + slider_length;
3344 if (n_steppers_ab > 0)
3345 range_rect->height += stepper_spacing;
3347 if (n_steppers_cd > 0)
3348 range_rect->height += stepper_spacing;
3352 range_rect->width = stepper_size * n_steppers + (focus_width + trough_border) * 2 + slider_length;
3353 range_rect->height = (focus_width + trough_border) * 2 + slider_width;
3355 if (n_steppers_ab > 0)
3356 range_rect->width += stepper_spacing;
3358 if (n_steppers_cd > 0)
3359 range_rect->width += stepper_spacing;
3363 *n_steppers_p = n_steppers;
3365 if (has_steppers_ab)
3366 *has_steppers_ab = (n_steppers_ab > 0);
3368 if (has_steppers_cd)
3369 *has_steppers_cd = (n_steppers_cd > 0);
3371 if (slider_length_p)
3372 *slider_length_p = slider_length;
3376 gtk_range_calc_layout (GtkRange *range,
3377 gdouble adjustment_value)
3379 GtkRangePrivate *priv = range->priv;
3380 gint slider_width, stepper_size, focus_width, trough_border, stepper_spacing;
3384 gboolean has_steppers_ab;
3385 gboolean has_steppers_cd;
3386 gboolean trough_under_steppers;
3387 GdkRectangle range_rect;
3390 if (!priv->need_recalc)
3393 /* If we have a too-small allocation, we prefer the steppers over
3394 * the trough/slider, probably the steppers are a more useful
3395 * feature in small spaces.
3397 * Also, we prefer to draw the range itself rather than the border
3398 * areas if there's a conflict, since the borders will be decoration
3399 * not controls. Though this depends on subclasses cooperating by
3400 * not drawing on priv->range_rect.
3403 widget = GTK_WIDGET (range);
3405 gtk_range_get_props (range,
3406 &slider_width, &stepper_size,
3407 &focus_width, &trough_border,
3408 &stepper_spacing, &trough_under_steppers,
3411 gtk_range_calc_request (range,
3412 slider_width, stepper_size,
3413 focus_width, trough_border, stepper_spacing,
3414 &range_rect, &border, &n_steppers,
3415 &has_steppers_ab, &has_steppers_cd, &slider_length);
3417 /* We never expand to fill available space in the small dimension
3418 * (i.e. vertical scrollbars are always a fixed width)
3420 if (priv->orientation == GTK_ORIENTATION_VERTICAL)
3422 clamp_dimensions (widget, &range_rect, &border, TRUE);
3426 clamp_dimensions (widget, &range_rect, &border, FALSE);
3429 range_rect.x = border.left;
3430 range_rect.y = border.top;
3432 priv->range_rect = range_rect;
3434 if (priv->orientation == GTK_ORIENTATION_VERTICAL)
3436 gint stepper_width, stepper_height;
3438 /* Steppers are the width of the range, and stepper_size in
3439 * height, or if we don't have enough height, divided equally
3440 * among available space.
3442 stepper_width = range_rect.width - focus_width * 2;
3444 if (trough_under_steppers)
3445 stepper_width -= trough_border * 2;
3447 if (stepper_width < 1)
3448 stepper_width = range_rect.width; /* screw the trough border */
3450 if (n_steppers == 0)
3451 stepper_height = 0; /* avoid divide by n_steppers */
3453 stepper_height = MIN (stepper_size, (range_rect.height / n_steppers));
3457 priv->stepper_a.x = range_rect.x + focus_width + trough_border * trough_under_steppers;
3458 priv->stepper_a.y = range_rect.y + focus_width + trough_border * trough_under_steppers;
3460 if (priv->has_stepper_a)
3462 priv->stepper_a.width = stepper_width;
3463 priv->stepper_a.height = stepper_height;
3467 priv->stepper_a.width = 0;
3468 priv->stepper_a.height = 0;
3473 priv->stepper_b.x = priv->stepper_a.x;
3474 priv->stepper_b.y = priv->stepper_a.y + priv->stepper_a.height;
3476 if (priv->has_stepper_b)
3478 priv->stepper_b.width = stepper_width;
3479 priv->stepper_b.height = stepper_height;
3483 priv->stepper_b.width = 0;
3484 priv->stepper_b.height = 0;
3489 if (priv->has_stepper_d)
3491 priv->stepper_d.width = stepper_width;
3492 priv->stepper_d.height = stepper_height;
3496 priv->stepper_d.width = 0;
3497 priv->stepper_d.height = 0;
3500 priv->stepper_d.x = priv->stepper_a.x;
3501 priv->stepper_d.y = range_rect.y + range_rect.height - priv->stepper_d.height - focus_width - trough_border * trough_under_steppers;
3505 if (priv->has_stepper_c)
3507 priv->stepper_c.width = stepper_width;
3508 priv->stepper_c.height = stepper_height;
3512 priv->stepper_c.width = 0;
3513 priv->stepper_c.height = 0;
3516 priv->stepper_c.x = priv->stepper_a.x;
3517 priv->stepper_c.y = priv->stepper_d.y - priv->stepper_c.height;
3519 /* Now the trough is the remaining space between steppers B and C,
3520 * if any, minus spacing
3522 priv->trough.x = range_rect.x;
3523 priv->trough.y = priv->stepper_b.y + priv->stepper_b.height + stepper_spacing * has_steppers_ab;
3524 priv->trough.width = range_rect.width;
3525 priv->trough.height = priv->stepper_c.y - priv->trough.y - stepper_spacing * has_steppers_cd;
3527 /* Slider fits into the trough, with stepper_spacing on either side,
3528 * and the size/position based on the adjustment or fixed, depending.
3530 priv->slider.x = priv->trough.x + focus_width + trough_border;
3531 priv->slider.width = priv->trough.width - (focus_width + trough_border) * 2;
3533 /* Compute slider position/length */
3535 gint y, bottom, top, height;
3537 top = priv->trough.y;
3538 bottom = priv->trough.y + priv->trough.height;
3540 if (! trough_under_steppers)
3542 top += trough_border;
3543 bottom -= trough_border;
3546 /* slider height is the fraction (page_size /
3547 * total_adjustment_range) times the trough height in pixels
3550 if (priv->adjustment->upper - priv->adjustment->lower != 0)
3551 height = ((bottom - top) * (priv->adjustment->page_size /
3552 (priv->adjustment->upper - priv->adjustment->lower)));
3554 height = priv->min_slider_size;
3556 if (height < priv->min_slider_size ||
3557 priv->slider_size_fixed)
3558 height = priv->min_slider_size;
3560 height = MIN (height, priv->trough.height);
3564 if (priv->adjustment->upper - priv->adjustment->lower - priv->adjustment->page_size != 0)
3565 y += (bottom - top - height) * ((adjustment_value - priv->adjustment->lower) /
3566 (priv->adjustment->upper - priv->adjustment->lower - priv->adjustment->page_size));
3568 y = CLAMP (y, top, bottom);
3570 if (should_invert (range))
3571 y = bottom - (y - top + height);
3574 priv->slider.height = height;
3576 /* These are publically exported */
3577 priv->slider_start = priv->slider.y;
3578 priv->slider_end = priv->slider.y + priv->slider.height;
3583 gint stepper_width, stepper_height;
3585 /* Steppers are the height of the range, and stepper_size in
3586 * width, or if we don't have enough width, divided equally
3587 * among available space.
3589 stepper_height = range_rect.height + focus_width * 2;
3591 if (trough_under_steppers)
3592 stepper_height -= trough_border * 2;
3594 if (stepper_height < 1)
3595 stepper_height = range_rect.height; /* screw the trough border */
3597 if (n_steppers == 0)
3598 stepper_width = 0; /* avoid divide by n_steppers */
3600 stepper_width = MIN (stepper_size, (range_rect.width / n_steppers));
3604 priv->stepper_a.x = range_rect.x + focus_width + trough_border * trough_under_steppers;
3605 priv->stepper_a.y = range_rect.y + focus_width + trough_border * trough_under_steppers;
3607 if (priv->has_stepper_a)
3609 priv->stepper_a.width = stepper_width;
3610 priv->stepper_a.height = stepper_height;
3614 priv->stepper_a.width = 0;
3615 priv->stepper_a.height = 0;
3620 priv->stepper_b.x = priv->stepper_a.x + priv->stepper_a.width;
3621 priv->stepper_b.y = priv->stepper_a.y;
3623 if (priv->has_stepper_b)
3625 priv->stepper_b.width = stepper_width;
3626 priv->stepper_b.height = stepper_height;
3630 priv->stepper_b.width = 0;
3631 priv->stepper_b.height = 0;
3636 if (priv->has_stepper_d)
3638 priv->stepper_d.width = stepper_width;
3639 priv->stepper_d.height = stepper_height;
3643 priv->stepper_d.width = 0;
3644 priv->stepper_d.height = 0;
3647 priv->stepper_d.x = range_rect.x + range_rect.width - priv->stepper_d.width - focus_width - trough_border * trough_under_steppers;
3648 priv->stepper_d.y = priv->stepper_a.y;
3653 if (priv->has_stepper_c)
3655 priv->stepper_c.width = stepper_width;
3656 priv->stepper_c.height = stepper_height;
3660 priv->stepper_c.width = 0;
3661 priv->stepper_c.height = 0;
3664 priv->stepper_c.x = priv->stepper_d.x - priv->stepper_c.width;
3665 priv->stepper_c.y = priv->stepper_a.y;
3667 /* Now the trough is the remaining space between steppers B and C,
3670 priv->trough.x = priv->stepper_b.x + priv->stepper_b.width + stepper_spacing * has_steppers_ab;
3671 priv->trough.y = range_rect.y;
3673 priv->trough.width = priv->stepper_c.x - priv->trough.x - stepper_spacing * has_steppers_cd;
3674 priv->trough.height = range_rect.height;
3676 /* Slider fits into the trough, with stepper_spacing on either side,
3677 * and the size/position based on the adjustment or fixed, depending.
3679 priv->slider.y = priv->trough.y + focus_width + trough_border;
3680 priv->slider.height = priv->trough.height - (focus_width + trough_border) * 2;
3682 /* Compute slider position/length */
3684 gint x, left, right, width;
3686 left = priv->trough.x;
3687 right = priv->trough.x + priv->trough.width;
3689 if (! trough_under_steppers)
3691 left += trough_border;
3692 right -= trough_border;
3695 /* slider width is the fraction (page_size /
3696 * total_adjustment_range) times the trough width in pixels
3699 if (priv->adjustment->upper - priv->adjustment->lower != 0)
3700 width = ((right - left) * (priv->adjustment->page_size /
3701 (priv->adjustment->upper - priv->adjustment->lower)));
3703 width = priv->min_slider_size;
3705 if (width < priv->min_slider_size ||
3706 priv->slider_size_fixed)
3707 width = priv->min_slider_size;
3709 width = MIN (width, priv->trough.width);
3713 if (priv->adjustment->upper - priv->adjustment->lower - priv->adjustment->page_size != 0)
3714 x += (right - left - width) * ((adjustment_value - priv->adjustment->lower) /
3715 (priv->adjustment->upper - priv->adjustment->lower - priv->adjustment->page_size));
3717 x = CLAMP (x, left, right);
3719 if (should_invert (range))
3720 x = right - (x - left + width);
3723 priv->slider.width = width;
3725 /* These are publically exported */
3726 priv->slider_start = priv->slider.x;
3727 priv->slider_end = priv->slider.x + priv->slider.width;
3731 gtk_range_update_mouse_location (range);
3733 switch (priv->upper_sensitivity)
3735 case GTK_SENSITIVITY_AUTO:
3736 priv->upper_sensitive =
3737 (priv->adjustment->value <
3738 (priv->adjustment->upper - priv->adjustment->page_size));
3741 case GTK_SENSITIVITY_ON:
3742 priv->upper_sensitive = TRUE;
3745 case GTK_SENSITIVITY_OFF:
3746 priv->upper_sensitive = FALSE;
3750 switch (priv->lower_sensitivity)
3752 case GTK_SENSITIVITY_AUTO:
3753 priv->lower_sensitive =
3754 (priv->adjustment->value > priv->adjustment->lower);
3757 case GTK_SENSITIVITY_ON:
3758 priv->lower_sensitive = TRUE;
3761 case GTK_SENSITIVITY_OFF:
3762 priv->lower_sensitive = FALSE;
3767 static GdkRectangle*
3768 get_area (GtkRange *range,
3769 MouseLocation location)
3771 GtkRangePrivate *priv = range->priv;
3775 case MOUSE_STEPPER_A:
3776 return &priv->stepper_a;
3777 case MOUSE_STEPPER_B:
3778 return &priv->stepper_b;
3779 case MOUSE_STEPPER_C:
3780 return &priv->stepper_c;
3781 case MOUSE_STEPPER_D:
3782 return &priv->stepper_d;
3784 return &priv->trough;
3786 return &priv->slider;
3792 g_warning (G_STRLOC": bug");
3797 gtk_range_calc_marks (GtkRange *range)
3799 GtkRangePrivate *priv = range->priv;
3802 if (!priv->recalc_marks)
3805 priv->recalc_marks = FALSE;
3807 for (i = 0; i < priv->n_marks; i++)
3809 priv->need_recalc = TRUE;
3810 gtk_range_calc_layout (range, priv->marks[i]);
3811 if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
3812 priv->mark_pos[i] = priv->slider.x + priv->slider.width / 2;
3814 priv->mark_pos[i] = priv->slider.y + priv->slider.height / 2;
3817 priv->need_recalc = TRUE;
3821 gtk_range_real_change_value (GtkRange *range,
3822 GtkScrollType scroll,
3825 GtkRangePrivate *priv = range->priv;
3827 /* potentially adjust the bounds _before_ we clamp */
3828 g_signal_emit (range, signals[ADJUST_BOUNDS], 0, value);
3830 if (priv->restrict_to_fill_level)
3831 value = MIN (value, MAX (priv->adjustment->lower,
3834 value = CLAMP (value, priv->adjustment->lower,
3835 (priv->adjustment->upper - priv->adjustment->page_size));
3837 if (priv->round_digits >= 0)
3842 i = priv->round_digits;
3847 value = floor ((value * power) + 0.5) / power;
3850 if (priv->adjustment->value != value)
3852 priv->need_recalc = TRUE;
3854 gtk_widget_queue_draw (GTK_WIDGET (range));
3856 switch (priv->update_policy)
3858 case GTK_UPDATE_CONTINUOUS:
3859 gtk_adjustment_set_value (priv->adjustment, value);
3862 /* Delayed means we update after a period of inactivity */
3863 case GTK_UPDATE_DELAYED:
3864 gtk_range_reset_update_timer (range);
3867 /* Discontinuous means we update on button release */
3868 case GTK_UPDATE_DISCONTINUOUS:
3869 /* don't emit value_changed signal */
3870 priv->adjustment->value = value;
3871 priv->update_pending = TRUE;
3879 gtk_range_update_value (GtkRange *range)
3881 GtkRangePrivate *priv = range->priv;
3883 gtk_range_remove_update_timer (range);
3885 if (priv->update_pending)
3887 gtk_adjustment_value_changed (priv->adjustment);
3889 priv->update_pending = FALSE;
3893 struct _GtkRangeStepTimer
3900 second_timeout (gpointer data)
3902 GtkRange *range = GTK_RANGE (data);
3903 GtkRangePrivate *priv = range->priv;
3905 gtk_range_scroll (range, priv->timer->step);
3911 initial_timeout (gpointer data)
3913 GtkRange *range = GTK_RANGE (data);
3914 GtkRangePrivate *priv = range->priv;
3915 GtkSettings *settings;
3918 settings = gtk_widget_get_settings (GTK_WIDGET (data));
3919 g_object_get (settings, "gtk-timeout-repeat", &timeout, NULL);
3921 priv->timer->timeout_id = gdk_threads_add_timeout (timeout * SCROLL_DELAY_FACTOR,
3929 gtk_range_add_step_timer (GtkRange *range,
3932 GtkRangePrivate *priv = range->priv;
3933 GtkSettings *settings;
3936 g_return_if_fail (priv->timer == NULL);
3937 g_return_if_fail (step != GTK_SCROLL_NONE);
3939 settings = gtk_widget_get_settings (GTK_WIDGET (range));
3940 g_object_get (settings, "gtk-timeout-initial", &timeout, NULL);
3942 priv->timer = g_new (GtkRangeStepTimer, 1);
3944 priv->timer->timeout_id = gdk_threads_add_timeout (timeout,
3947 priv->timer->step = step;
3949 gtk_range_scroll (range, priv->timer->step);
3953 gtk_range_remove_step_timer (GtkRange *range)
3955 GtkRangePrivate *priv = range->priv;
3959 if (priv->timer->timeout_id != 0)
3960 g_source_remove (priv->timer->timeout_id);
3962 g_free (priv->timer);
3969 update_timeout (gpointer data)
3971 GtkRange *range = GTK_RANGE (data);
3972 GtkRangePrivate *priv = range->priv;
3974 gtk_range_update_value (range);
3975 priv->update_timeout_id = 0;
3982 gtk_range_reset_update_timer (GtkRange *range)
3984 GtkRangePrivate *priv = range->priv;
3986 gtk_range_remove_update_timer (range);
3988 priv->update_timeout_id = gdk_threads_add_timeout (UPDATE_DELAY,
3994 gtk_range_remove_update_timer (GtkRange *range)
3996 GtkRangePrivate *priv = range->priv;
3998 if (priv->update_timeout_id != 0)
4000 g_source_remove (priv->update_timeout_id);
4001 priv->update_timeout_id = 0;
4006 _gtk_range_set_stop_values (GtkRange *range,
4010 GtkRangePrivate *priv = range->priv;
4013 g_free (priv->marks);
4014 priv->marks = g_new (gdouble, n_values);
4016 g_free (priv->mark_pos);
4017 priv->mark_pos = g_new (gint, n_values);
4019 priv->n_marks = n_values;
4021 for (i = 0; i < n_values; i++)
4022 priv->marks[i] = values[i];
4024 priv->recalc_marks = TRUE;
4028 _gtk_range_get_stop_positions (GtkRange *range,
4031 GtkRangePrivate *priv = range->priv;
4033 gtk_range_calc_marks (range);
4036 *values = g_memdup (priv->mark_pos, priv->n_marks * sizeof (gint));
4038 return priv->n_marks;
4042 _gtk_range_set_round_digits (GtkRange *range,
4045 range->priv->round_digits = round_digits;
4049 _gtk_range_set_steppers (GtkRange *range,
4055 range->priv->has_stepper_a = has_a;
4056 range->priv->has_stepper_b = has_b;
4057 range->priv->has_stepper_c = has_c;
4058 range->priv->has_stepper_d = has_d;