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 1997-2000. 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/.
32 #include "gtksignal.h"
35 #define SCROLL_INITIAL_DELAY 250 /* must hold button this long before ... */
36 #define SCROLL_LATER_DELAY 100 /* ... it starts repeating at this rate */
37 #define UPDATE_DELAY 300 /* Delay for queued update */
60 MOUSE_WIDGET /* inside widget but not in any of the above GUI elements */
63 struct _GtkRangeLayout
65 /* These are in widget->window coordinates */
66 GdkRectangle stepper_a;
67 GdkRectangle stepper_b;
68 GdkRectangle stepper_c;
69 GdkRectangle stepper_d;
70 /* The trough rectangle is the area the thumb can slide in, not the
76 /* Layout-related state */
78 MouseLocation mouse_location;
79 /* last mouse coords we got, or -1 if mouse is outside the range */
82 /* "grabbed" mouse location, OUTSIDE for no grab */
83 MouseLocation grab_location;
84 gint grab_button; /* 0 if none */
87 static void gtk_range_class_init (GtkRangeClass *klass);
88 static void gtk_range_init (GtkRange *range);
89 static void gtk_range_set_property (GObject *object,
93 static void gtk_range_get_property (GObject *object,
97 static void gtk_range_destroy (GtkObject *object);
98 static void gtk_range_finalize (GObject *object);
99 static void gtk_range_size_request (GtkWidget *widget,
100 GtkRequisition *requisition);
101 static void gtk_range_size_allocate (GtkWidget *widget,
102 GtkAllocation *allocation);
103 static void gtk_range_realize (GtkWidget *widget);
104 static void gtk_range_unrealize (GtkWidget *widget);
105 static gint gtk_range_expose (GtkWidget *widget,
106 GdkEventExpose *event);
107 static gint gtk_range_button_press (GtkWidget *widget,
108 GdkEventButton *event);
109 static gint gtk_range_button_release (GtkWidget *widget,
110 GdkEventButton *event);
111 static gint gtk_range_motion_notify (GtkWidget *widget,
112 GdkEventMotion *event);
113 static gint gtk_range_enter_notify (GtkWidget *widget,
114 GdkEventCrossing *event);
115 static gint gtk_range_leave_notify (GtkWidget *widget,
116 GdkEventCrossing *event);
117 static gint gtk_range_scroll_event (GtkWidget *widget,
118 GdkEventScroll *event);
119 static void gtk_range_style_set (GtkWidget *widget,
120 GtkStyle *previous_style);
125 static void gtk_range_move_slider (GtkRange *range,
126 GtkScrollType scroll);
129 static void gtk_range_scroll (GtkRange *range,
130 GtkScrollType scroll);
131 static gboolean gtk_range_update_mouse_location (GtkRange *range);
132 static void gtk_range_calc_layout (GtkRange *range);
133 static void gtk_range_get_props (GtkRange *range,
137 gint *stepper_spacing);
138 static void gtk_range_calc_request (GtkRange *range,
142 gint stepper_spacing,
143 GdkRectangle *range_rect,
146 gint *slider_length_p);
147 static void gtk_range_adjustment_value_changed (GtkAdjustment *adjustment,
149 static void gtk_range_adjustment_changed (GtkAdjustment *adjustment,
151 static void gtk_range_add_step_timer (GtkRange *range,
153 static void gtk_range_remove_step_timer (GtkRange *range);
154 static void gtk_range_reset_update_timer (GtkRange *range);
155 static void gtk_range_remove_update_timer (GtkRange *range);
156 static GdkRectangle* get_area (GtkRange *range,
157 MouseLocation location);
158 static void gtk_range_internal_set_value (GtkRange *range,
160 static void gtk_range_update_value (GtkRange *range);
163 static GtkWidgetClass *parent_class = NULL;
164 static guint signals[LAST_SIGNAL];
168 gtk_range_get_type (void)
170 static GtkType range_type = 0;
174 static const GtkTypeInfo range_info =
178 sizeof (GtkRangeClass),
179 (GtkClassInitFunc) gtk_range_class_init,
180 (GtkObjectInitFunc) gtk_range_init,
181 /* reserved_1 */ NULL,
182 /* reserved_2 */ NULL,
183 (GtkClassInitFunc) NULL,
186 range_type = gtk_type_unique (GTK_TYPE_WIDGET, &range_info);
193 gtk_range_class_init (GtkRangeClass *class)
195 GObjectClass *gobject_class;
196 GtkObjectClass *object_class;
197 GtkWidgetClass *widget_class;
199 gobject_class = G_OBJECT_CLASS (class);
200 object_class = (GtkObjectClass*) class;
201 widget_class = (GtkWidgetClass*) class;
203 parent_class = g_type_class_peek_parent (class);
205 gobject_class->set_property = gtk_range_set_property;
206 gobject_class->get_property = gtk_range_get_property;
207 gobject_class->finalize = gtk_range_finalize;
208 object_class->destroy = gtk_range_destroy;
210 widget_class->size_request = gtk_range_size_request;
211 widget_class->size_allocate = gtk_range_size_allocate;
212 widget_class->realize = gtk_range_realize;
213 widget_class->unrealize = gtk_range_unrealize;
214 widget_class->expose_event = gtk_range_expose;
215 widget_class->button_press_event = gtk_range_button_press;
216 widget_class->button_release_event = gtk_range_button_release;
217 widget_class->motion_notify_event = gtk_range_motion_notify;
218 widget_class->scroll_event = gtk_range_scroll_event;
219 widget_class->enter_notify_event = gtk_range_enter_notify;
220 widget_class->leave_notify_event = gtk_range_leave_notify;
221 widget_class->style_set = gtk_range_style_set;
223 class->move_slider = gtk_range_move_slider;
225 class->slider_detail = "slider";
226 class->stepper_detail = "stepper";
228 signals[VALUE_CHANGED] =
229 g_signal_new ("value_changed",
230 G_TYPE_FROM_CLASS (object_class),
232 G_STRUCT_OFFSET (GtkRangeClass, value_changed),
234 gtk_marshal_NONE__NONE,
237 signals[MOVE_SLIDER] =
238 g_signal_new ("move_slider",
239 G_TYPE_FROM_CLASS (object_class),
240 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
241 G_STRUCT_OFFSET (GtkRangeClass, move_slider),
243 gtk_marshal_VOID__ENUM,
245 GTK_TYPE_SCROLL_TYPE);
248 g_object_class_install_property (gobject_class,
250 g_param_spec_enum ("update_policy",
252 _("How the range should be updated on the screen"),
253 GTK_TYPE_UPDATE_TYPE,
254 GTK_UPDATE_CONTINUOUS,
257 g_object_class_install_property (gobject_class,
259 g_param_spec_object ("adjustment",
261 _("The GtkAdjustment that contains the current value of this range object"),
263 G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
265 g_object_class_install_property (gobject_class,
267 g_param_spec_boolean ("inverted",
269 _("Invert direction slider moves to increase range value"),
273 gtk_widget_class_install_style_property (widget_class,
274 g_param_spec_int ("slider_width",
276 _("Width of scrollbar or scale thumb"),
281 gtk_widget_class_install_style_property (widget_class,
282 g_param_spec_int ("trough_border",
284 _("Spacing between thumb/steppers and outer trough bevel"),
289 gtk_widget_class_install_style_property (widget_class,
290 g_param_spec_int ("stepper_size",
292 _("Length of step buttons at ends"),
297 gtk_widget_class_install_style_property (widget_class,
298 g_param_spec_int ("stepper_spacing",
299 _("Stepper Spacing"),
300 _("Spacing between step buttons and thumb"),
308 gtk_range_set_property (GObject *object,
315 range = GTK_RANGE (object);
319 case PROP_UPDATE_POLICY:
320 gtk_range_set_update_policy (range, g_value_get_enum (value));
322 case PROP_ADJUSTMENT:
323 gtk_range_set_adjustment (range, g_value_get_object (value));
326 gtk_range_set_inverted (range, g_value_get_boolean (value));
329 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
335 gtk_range_get_property (GObject *object,
342 range = GTK_RANGE (object);
346 case PROP_UPDATE_POLICY:
347 g_value_set_enum (value, range->update_policy);
349 case PROP_ADJUSTMENT:
350 g_value_set_object (value, G_OBJECT (range->adjustment));
353 g_value_set_boolean (value, range->inverted);
356 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
362 gtk_range_init (GtkRange *range)
364 range->adjustment = NULL;
365 range->update_policy = GTK_UPDATE_CONTINUOUS;
366 range->inverted = FALSE;
367 range->flippable = FALSE;
368 range->min_slider_size = 1;
369 range->has_stepper_a = FALSE;
370 range->has_stepper_b = FALSE;
371 range->has_stepper_c = FALSE;
372 range->has_stepper_d = FALSE;
373 range->need_recalc = TRUE;
374 range->round_digits = -1;
375 range->layout = g_new0 (GtkRangeLayout, 1);
376 range->layout->grab_location = MOUSE_OUTSIDE;
377 range->layout->grab_button = 0;
382 * gtk_range_get_adjustment:
383 * @range: a #GtkRange
385 * Get the #GtkAdjustment which is the "model" object for #GtkRange.
386 * See gtk_range_set_adjustment() for details.
387 * The return value does not have a reference added, so should not
390 * Return value: a #GtkAdjustment
393 gtk_range_get_adjustment (GtkRange *range)
395 g_return_val_if_fail (range != NULL, NULL);
396 g_return_val_if_fail (GTK_IS_RANGE (range), NULL);
398 if (!range->adjustment)
399 gtk_range_set_adjustment (range, NULL);
401 return range->adjustment;
405 * gtk_range_set_update_policy:
406 * @range: a #GtkRange
407 * @policy: update policy
409 * Sets the update policy for the range. #GTK_UPDATE_CONTINUOUS means that
410 * anytime the range slider is moved, the range value will change and the
411 * value_changed signal will be emitted. #GTK_UPDATE_DELAYED means that
412 * the value will be updated after a brief timeout where no slider motion
413 * occurs, so updates are spaced by a short time rather than
414 * continuous. #GTK_UPDATE_DISCONTINUOUS means that the value will only
415 * be updated when the user releases the button and ends the slider
420 gtk_range_set_update_policy (GtkRange *range,
421 GtkUpdateType policy)
423 g_return_if_fail (range != NULL);
424 g_return_if_fail (GTK_IS_RANGE (range));
426 if (range->update_policy != policy)
428 range->update_policy = policy;
429 g_object_notify (G_OBJECT (range), "update_policy");
434 * gtk_range_get_update_policy:
435 * @range: a #GtkRange
437 * Gets the update policy of @range. See gtk_range_set_update_policy().
439 * Return value: the current update policy
442 gtk_range_get_update_policy (GtkRange *range)
444 g_return_val_if_fail (GTK_IS_RANGE (range), GTK_UPDATE_CONTINUOUS);
446 return range->update_policy;
450 * gtk_range_set_adjustment:
451 * @range: a #GtkRange
452 * @adjustment: a #GtkAdjustment
454 * Sets the adjustment to be used as the "model" object for this range
455 * widget. The adjustment indicates the current range value, the
456 * minimum and maximum range values, the step/page increments used
457 * for keybindings and scrolling, and the page size. The page size
458 * is normally 0 for #GtkScale and nonzero for #GtkScrollbar, and
459 * indicates the size of the visible area of the widget being scrolled.
460 * The page size affects the size of the scrollbar slider.
464 gtk_range_set_adjustment (GtkRange *range,
465 GtkAdjustment *adjustment)
467 g_return_if_fail (range != NULL);
468 g_return_if_fail (GTK_IS_RANGE (range));
471 adjustment = (GtkAdjustment*) gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
473 g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
475 if (range->adjustment != adjustment)
477 if (range->adjustment)
479 gtk_signal_disconnect_by_func (GTK_OBJECT (range->adjustment),
480 G_CALLBACK (gtk_range_adjustment_changed),
482 gtk_signal_disconnect_by_func (GTK_OBJECT (range->adjustment),
483 G_CALLBACK (gtk_range_adjustment_value_changed),
485 gtk_object_unref (GTK_OBJECT (range->adjustment));
488 range->adjustment = adjustment;
489 gtk_object_ref (GTK_OBJECT (adjustment));
490 gtk_object_sink (GTK_OBJECT (adjustment));
492 gtk_signal_connect (GTK_OBJECT (adjustment), "changed",
493 (GtkSignalFunc) gtk_range_adjustment_changed,
495 gtk_signal_connect (GTK_OBJECT (adjustment), "value_changed",
496 (GtkSignalFunc) gtk_range_adjustment_value_changed,
499 gtk_range_adjustment_changed (adjustment, range);
500 g_object_notify (G_OBJECT (range), "adjustment");
505 * gtk_range_set_inverted:
506 * @range: a #GtkRange
507 * @setting: %TRUE to invert the range
509 * Ranges normally move from lower to higher values as the
510 * slider moves from top to bottom or left to right. Inverted
511 * ranges have higher values at the top or on the right rather than
512 * on the bottom or left.
516 gtk_range_set_inverted (GtkRange *range,
519 g_return_if_fail (GTK_IS_RANGE (range));
521 setting = setting != FALSE;
523 if (setting != range->inverted)
525 range->inverted = setting;
526 g_object_notify (G_OBJECT (range), "inverted");
527 gtk_widget_queue_resize (GTK_WIDGET (range));
532 * gtk_range_get_inverted:
533 * @range: a #GtkRange
535 * Gets the value set by gtk_range_set_inverted().
537 * Return value: %TRUE if the range is inverted
540 gtk_range_get_inverted (GtkRange *range)
542 g_return_val_if_fail (GTK_IS_RANGE (range), FALSE);
544 return range->inverted;
548 * gtk_range_set_increments:
549 * @range: a #GtkRange
553 * Sets the step and page sizes for the range.
554 * The step size is used when the user clicks the #GtkScrollbar
555 * arrows or moves #GtkScale via arrow keys. The page size
556 * is used for example when moving via Page Up or Page Down keys.
560 gtk_range_set_increments (GtkRange *range,
564 g_return_if_fail (GTK_IS_RANGE (range));
566 range->adjustment->step_increment = step;
567 range->adjustment->page_increment = page;
569 gtk_adjustment_changed (range->adjustment);
573 * gtk_range_set_range:
574 * @range: a #GtkRange
575 * @min: minimum range value
576 * @max: maximum range value
578 * Sets the allowable values in the #GtkRange, and clamps the range
579 * value to be between min and max.
582 gtk_range_set_range (GtkRange *range,
588 g_return_if_fail (GTK_IS_RANGE (range));
589 g_return_if_fail (min < max);
591 range->adjustment->lower = min;
592 range->adjustment->upper = max;
594 value = CLAMP (range->adjustment->value,
595 range->adjustment->lower,
596 (range->adjustment->upper - range->adjustment->page_size));
598 gtk_adjustment_changed (range->adjustment);
602 * gtk_range_set_value:
603 * @range: a #GtkRange
604 * @value: new value of the range
606 * Sets the current value of the range; if the value is outside the
607 * minimum or maximum range values, it will be clamped to fit inside
608 * them. The range emits the "value_changed" signal if the value
613 gtk_range_set_value (GtkRange *range,
616 g_return_if_fail (GTK_IS_RANGE (range));
618 value = CLAMP (value, range->adjustment->lower,
619 (range->adjustment->upper - range->adjustment->page_size));
621 gtk_adjustment_set_value (range->adjustment, value);
625 * gtk_range_get_value:
626 * @range: a #GtkRange
628 * Gets the current value of the range.
630 * Return value: current value of the range.
633 gtk_range_get_value (GtkRange *range)
635 g_return_val_if_fail (GTK_IS_RANGE (range), 0.0);
637 return range->adjustment->value;
641 should_invert (GtkRange *range)
643 if (range->orientation == GTK_ORIENTATION_HORIZONTAL)
645 (range->inverted && !range->flippable) ||
646 (range->inverted && range->flippable && gtk_widget_get_direction (GTK_WIDGET (range)) == GTK_TEXT_DIR_LTR) ||
647 (!range->inverted && range->flippable && gtk_widget_get_direction (GTK_WIDGET (range)) == GTK_TEXT_DIR_RTL);
649 return range->inverted;
653 gtk_range_finalize (GObject *object)
657 g_return_if_fail (GTK_IS_RANGE (object));
659 range = GTK_RANGE (object);
661 g_free (range->layout);
663 (* G_OBJECT_CLASS (parent_class)->finalize) (object);
667 gtk_range_destroy (GtkObject *object)
671 g_return_if_fail (GTK_IS_RANGE (object));
673 range = GTK_RANGE (object);
675 gtk_range_remove_step_timer (range);
676 gtk_range_remove_update_timer (range);
678 if (range->adjustment)
680 if (range->adjustment)
681 gtk_signal_disconnect_by_data (GTK_OBJECT (range->adjustment),
683 gtk_object_unref (GTK_OBJECT (range->adjustment));
684 range->adjustment = NULL;
687 (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
691 gtk_range_size_request (GtkWidget *widget,
692 GtkRequisition *requisition)
695 gint slider_width, stepper_size, trough_border, stepper_spacing;
696 GdkRectangle range_rect;
699 range = GTK_RANGE (widget);
701 gtk_range_get_props (range,
702 &slider_width, &stepper_size, &trough_border, &stepper_spacing);
704 gtk_range_calc_request (range,
705 slider_width, stepper_size, trough_border, stepper_spacing,
706 &range_rect, &border, NULL, NULL);
708 requisition->width = range_rect.width + border.left + border.right;
709 requisition->height = range_rect.height + border.top + border.bottom;
713 gtk_range_size_allocate (GtkWidget *widget,
714 GtkAllocation *allocation)
718 range = GTK_RANGE (widget);
720 range->need_recalc = TRUE;
721 gtk_range_calc_layout (range);
723 (* GTK_WIDGET_CLASS (parent_class)->size_allocate) (widget, allocation);
727 gtk_range_realize (GtkWidget *widget)
730 GdkWindowAttr attributes;
731 gint attributes_mask;
733 range = GTK_RANGE (widget);
735 gtk_range_calc_layout (range);
737 GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
739 attributes.window_type = GDK_WINDOW_CHILD;
740 attributes.x = widget->allocation.x;
741 attributes.y = widget->allocation.y;
742 attributes.width = widget->allocation.width;
743 attributes.height = widget->allocation.height;
744 attributes.wclass = GDK_INPUT_OUTPUT;
745 attributes.visual = gtk_widget_get_visual (widget);
746 attributes.colormap = gtk_widget_get_colormap (widget);
747 attributes.event_mask = gtk_widget_get_events (widget);
748 attributes.event_mask |= (GDK_EXPOSURE_MASK |
749 GDK_BUTTON_PRESS_MASK |
750 GDK_BUTTON_RELEASE_MASK |
751 GDK_ENTER_NOTIFY_MASK |
752 GDK_LEAVE_NOTIFY_MASK |
753 GDK_POINTER_MOTION_MASK |
754 GDK_POINTER_MOTION_HINT_MASK);
756 attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
758 widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
759 gdk_window_set_user_data (widget->window, range);
761 widget->style = gtk_style_attach (widget->style, widget->window);
762 gtk_style_set_background (widget->style, widget->window, widget->state);
766 gtk_range_unrealize (GtkWidget *widget)
770 g_return_if_fail (widget != NULL);
771 g_return_if_fail (GTK_IS_RANGE (widget));
773 range = GTK_RANGE (widget);
775 gtk_range_remove_step_timer (range);
776 gtk_range_remove_update_timer (range);
778 if (GTK_WIDGET_CLASS (parent_class)->unrealize)
779 (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
783 draw_stepper (GtkRange *range,
785 GtkArrowType arrow_type,
790 GtkStateType state_type;
791 GtkShadowType shadow_type;
792 GdkRectangle intersection;
794 /* More to get the right clip region than for efficiency */
795 if (!gdk_rectangle_intersect (area, rect, &intersection))
798 if (!GTK_WIDGET_IS_SENSITIVE (range))
799 state_type = GTK_STATE_INSENSITIVE;
801 state_type = GTK_STATE_ACTIVE;
803 state_type = GTK_STATE_PRELIGHT;
805 state_type = GTK_STATE_NORMAL;
808 shadow_type = GTK_SHADOW_IN;
810 shadow_type = GTK_SHADOW_OUT;
812 gtk_paint_arrow (GTK_WIDGET (range)->style,
813 GTK_WIDGET (range)->window,
814 state_type, shadow_type,
815 &intersection, GTK_WIDGET (range),
816 GTK_RANGE_GET_CLASS (range)->stepper_detail,
818 TRUE, rect->x, rect->y, rect->width, rect->height);
822 gtk_range_expose (GtkWidget *widget,
823 GdkEventExpose *event)
830 g_return_val_if_fail (widget != NULL, FALSE);
831 g_return_val_if_fail (GTK_IS_RANGE (widget), FALSE);
832 g_return_val_if_fail (event != NULL, FALSE);
834 range = GTK_RANGE (widget);
836 gtk_range_calc_layout (range);
838 sensitive = GTK_WIDGET_IS_SENSITIVE (widget);
840 /* Just to be confusing, we draw the trough for the whole
841 * range rectangle, not the trough rectangle (the trough
842 * rectangle is just for hit detection)
844 /* The gdk_rectangle_intersect is more to get the right
845 * clip region (limited to range_rect) than for efficiency
847 if (gdk_rectangle_intersect (&event->area, &range->range_rect,
850 gtk_paint_box (widget->style,
852 sensitive ? GTK_STATE_ACTIVE : GTK_STATE_INSENSITIVE,
854 &area, GTK_WIDGET(range), "trough",
857 range->range_rect.width,
858 range->range_rect.height);
862 GTK_WIDGET_HAS_FOCUS (range))
863 gtk_paint_focus (widget->style,
865 &area, widget, "trough",
868 range->range_rect.width,
869 range->range_rect.height);
873 state = GTK_STATE_INSENSITIVE;
874 else if (range->layout->mouse_location == MOUSE_SLIDER)
875 state = GTK_STATE_PRELIGHT;
877 state = GTK_STATE_NORMAL;
879 if (gdk_rectangle_intersect (&event->area,
880 &range->layout->slider,
883 gtk_paint_slider (widget->style,
889 GTK_RANGE_GET_CLASS (range)->slider_detail,
890 range->layout->slider.x,
891 range->layout->slider.y,
892 range->layout->slider.width,
893 range->layout->slider.height,
897 if (range->has_stepper_a)
898 draw_stepper (range, &range->layout->stepper_a,
899 range->orientation == GTK_ORIENTATION_VERTICAL ? GTK_ARROW_UP : GTK_ARROW_LEFT,
900 range->layout->grab_location == MOUSE_STEPPER_A,
901 range->layout->mouse_location == MOUSE_STEPPER_A,
904 if (range->has_stepper_b)
905 draw_stepper (range, &range->layout->stepper_b,
906 range->orientation == GTK_ORIENTATION_VERTICAL ? GTK_ARROW_DOWN : GTK_ARROW_RIGHT,
907 range->layout->grab_location == MOUSE_STEPPER_B,
908 range->layout->mouse_location == MOUSE_STEPPER_B,
911 if (range->has_stepper_c)
912 draw_stepper (range, &range->layout->stepper_c,
913 range->orientation == GTK_ORIENTATION_VERTICAL ? GTK_ARROW_UP : GTK_ARROW_LEFT,
914 range->layout->grab_location == MOUSE_STEPPER_C,
915 range->layout->mouse_location == MOUSE_STEPPER_C,
918 if (range->has_stepper_d)
919 draw_stepper (range, &range->layout->stepper_d,
920 range->orientation == GTK_ORIENTATION_VERTICAL ? GTK_ARROW_DOWN : GTK_ARROW_RIGHT,
921 range->layout->grab_location == MOUSE_STEPPER_D,
922 range->layout->mouse_location == MOUSE_STEPPER_D,
929 range_grab_add (GtkRange *range,
930 MouseLocation location,
933 /* we don't actually gtk_grab, since a button is down */
935 range->layout->grab_location = location;
936 range->layout->grab_button = button;
938 if (gtk_range_update_mouse_location (range))
939 gtk_widget_queue_draw (GTK_WIDGET (range));
943 range_grab_remove (GtkRange *range)
945 range->layout->grab_location = MOUSE_OUTSIDE;
946 range->layout->grab_button = 0;
948 if (gtk_range_update_mouse_location (range))
949 gtk_widget_queue_draw (GTK_WIDGET (range));
953 range_get_scroll_for_grab (GtkRange *range)
955 switch (range->layout->grab_location)
957 /* Backward stepper */
958 case MOUSE_STEPPER_A:
959 case MOUSE_STEPPER_C:
960 switch (range->layout->grab_button)
963 return GTK_SCROLL_STEP_BACKWARD;
966 return GTK_SCROLL_PAGE_BACKWARD;
969 return GTK_SCROLL_START;
974 /* Forward stepper */
975 case MOUSE_STEPPER_B:
976 case MOUSE_STEPPER_D:
977 switch (range->layout->grab_button)
980 return GTK_SCROLL_STEP_FORWARD;
983 return GTK_SCROLL_PAGE_FORWARD;
986 return GTK_SCROLL_END;
994 if (range->trough_click_forward)
996 return range->layout->grab_button == 3
997 ? GTK_SCROLL_PAGE_FORWARD : GTK_SCROLL_STEP_FORWARD;
1001 return range->layout->grab_button == 3
1002 ? GTK_SCROLL_PAGE_BACKWARD : GTK_SCROLL_STEP_BACKWARD;
1013 return GTK_SCROLL_NONE;
1017 coord_to_value (GtkRange *range,
1023 if (range->orientation == GTK_ORIENTATION_VERTICAL)
1024 if (range->layout->trough.height == range->layout->slider.height)
1027 frac = ((coord - range->layout->trough.y) /
1028 (gdouble) (range->layout->trough.height - range->layout->slider.height));
1030 if (range->layout->trough.width == range->layout->slider.width)
1033 frac = ((coord - range->layout->trough.x) /
1034 (gdouble) (range->layout->trough.width - range->layout->slider.width));
1036 if (should_invert (range))
1039 value = range->adjustment->lower +
1040 frac * (range->adjustment->upper - range->adjustment->lower - range->adjustment->page_size);
1046 gtk_range_button_press (GtkWidget *widget,
1047 GdkEventButton *event)
1051 g_return_val_if_fail (GTK_IS_RANGE (widget), FALSE);
1052 g_return_val_if_fail (event != NULL, FALSE);
1054 range = GTK_RANGE (widget);
1056 if (!GTK_WIDGET_HAS_FOCUS (widget))
1057 gtk_widget_grab_focus (widget);
1059 /* ignore presses when we're already doing something else. */
1060 if (range->layout->grab_location != MOUSE_OUTSIDE)
1063 range->layout->mouse_x = event->x;
1064 range->layout->mouse_y = event->y;
1065 if (gtk_range_update_mouse_location (range))
1066 gtk_widget_queue_draw (widget);
1068 if (range->layout->mouse_location == MOUSE_TROUGH &&
1069 (event->button == 1 || event->button == 3))
1071 /* button 1 steps by step increment, as with button 1 on a stepper,
1072 * button 3 steps by page increment, as with button 2 on a stepper
1074 GtkScrollType scroll;
1075 gdouble click_value;
1077 click_value = coord_to_value (range,
1078 range->orientation == GTK_ORIENTATION_VERTICAL ?
1079 event->y : event->x);
1081 range->trough_click_forward = click_value > range->adjustment->value;
1082 range_grab_add (range, MOUSE_TROUGH, event->button);
1084 scroll = range_get_scroll_for_grab (range);
1086 gtk_range_add_step_timer (range, scroll);
1090 else if ((range->layout->mouse_location == MOUSE_STEPPER_A ||
1091 range->layout->mouse_location == MOUSE_STEPPER_B ||
1092 range->layout->mouse_location == MOUSE_STEPPER_C ||
1093 range->layout->mouse_location == MOUSE_STEPPER_D) &&
1094 (event->button == 1 || event->button == 2 || event->button == 3))
1096 GdkRectangle *stepper_area;
1097 GtkScrollType scroll;
1099 range_grab_add (range, range->layout->mouse_location, event->button);
1101 stepper_area = get_area (range, range->layout->mouse_location);
1102 gtk_widget_queue_draw_area (widget,
1105 stepper_area->width,
1106 stepper_area->height);
1108 scroll = range_get_scroll_for_grab (range);
1109 if (scroll != GTK_SCROLL_NONE)
1110 gtk_range_add_step_timer (range, scroll);
1114 else if ((range->layout->mouse_location == MOUSE_TROUGH &&
1115 event->button == 2) ||
1116 range->layout->mouse_location == MOUSE_SLIDER)
1118 /* Any button can be used to drag the slider, but you can start
1119 * dragging the slider with a trough click using button 2;
1120 * On button 2 press, we warp the slider to mouse position,
1121 * then begin the slider drag.
1123 if (event->button == 2)
1125 gdouble slider_low_value, slider_high_value;
1128 coord_to_value (range,
1129 range->orientation == GTK_ORIENTATION_VERTICAL ?
1130 event->y : event->x);
1132 coord_to_value (range,
1133 range->orientation == GTK_ORIENTATION_VERTICAL ?
1134 event->y - range->layout->slider.height :
1135 event->x - range->layout->slider.width);
1137 /* middle button jumps to point */
1138 gtk_range_internal_set_value (range,
1139 slider_low_value + (slider_high_value - slider_low_value) / 2);
1141 /* Calc layout so we can set slide_initial_slider_position
1144 gtk_range_calc_layout (range);
1147 if (range->orientation == GTK_ORIENTATION_VERTICAL)
1149 range->slide_initial_slider_position = range->layout->slider.y;
1150 range->slide_initial_coordinate = event->y;
1154 range->slide_initial_slider_position = range->layout->slider.x;
1155 range->slide_initial_coordinate = event->x;
1158 range_grab_add (range, MOUSE_SLIDER, event->button);
1166 /* During a slide, move the slider as required given new mouse position */
1168 update_slider_position (GtkRange *range,
1176 if (range->orientation == GTK_ORIENTATION_VERTICAL)
1177 delta = mouse_y - range->slide_initial_coordinate;
1179 delta = mouse_x - range->slide_initial_coordinate;
1181 c = range->slide_initial_slider_position + delta;
1183 new_value = coord_to_value (range, c);
1185 gtk_range_internal_set_value (range, new_value);
1189 gtk_range_button_release (GtkWidget *widget,
1190 GdkEventButton *event)
1194 g_return_val_if_fail (GTK_IS_RANGE (widget), FALSE);
1195 g_return_val_if_fail (event != NULL, FALSE);
1197 range = GTK_RANGE (widget);
1199 range->layout->mouse_x = event->x;
1200 range->layout->mouse_y = event->y;
1202 if (range->layout->grab_button == event->button)
1204 GtkScrollType scroll;
1205 MouseLocation grab_location;
1207 grab_location = range->layout->grab_location;
1209 scroll = range_get_scroll_for_grab (range);
1211 range_grab_remove (range);
1212 gtk_range_remove_step_timer (range);
1214 /* We only do the move if we're still on top of the button at
1217 if (grab_location == range->layout->mouse_location &&
1218 scroll != GTK_SCROLL_NONE)
1220 gtk_range_scroll (range, scroll);
1223 if (grab_location == MOUSE_SLIDER)
1224 update_slider_position (range, event->x, event->y);
1226 /* Flush any pending discontinuous/delayed updates */
1227 gtk_range_update_value (range);
1229 /* Just be lazy about this, if we scrolled it will all redraw anyway,
1230 * so no point optimizing the button deactivate case
1232 gtk_widget_queue_draw (widget);
1241 gtk_range_scroll_event (GtkWidget *widget,
1242 GdkEventScroll *event)
1246 g_return_val_if_fail (GTK_IS_RANGE (widget), FALSE);
1247 g_return_val_if_fail (event != NULL, FALSE);
1249 range = GTK_RANGE (widget);
1251 if (GTK_WIDGET_REALIZED (range))
1253 GtkAdjustment *adj = GTK_RANGE (range)->adjustment;
1254 gdouble new_value = adj->value + ((event->direction == GDK_SCROLL_UP ||
1255 event->direction == GDK_SCROLL_LEFT) ?
1256 -adj->page_increment / 2:
1257 adj->page_increment / 2);
1259 gtk_range_internal_set_value (range, new_value);
1261 /* Policy DELAYED makes sense with scroll events,
1262 * but DISCONTINUOUS doesn't, so we update immediately
1265 if (range->update_policy == GTK_UPDATE_DISCONTINUOUS)
1266 gtk_range_update_value (range);
1273 gtk_range_motion_notify (GtkWidget *widget,
1274 GdkEventMotion *event)
1279 g_return_val_if_fail (GTK_IS_RANGE (widget), FALSE);
1280 g_return_val_if_fail (event != NULL, FALSE);
1282 range = GTK_RANGE (widget);
1284 gdk_window_get_pointer (widget->window, &x, &y, NULL);
1286 range->layout->mouse_x = x;
1287 range->layout->mouse_y = y;
1289 if (gtk_range_update_mouse_location (range))
1290 gtk_widget_queue_draw (widget);
1292 if (range->layout->grab_location == MOUSE_SLIDER)
1293 update_slider_position (range, event->x, event->y);
1295 /* We handled the event if the mouse was in the range_rect */
1296 return range->layout->mouse_location != MOUSE_OUTSIDE;
1300 gtk_range_enter_notify (GtkWidget *widget,
1301 GdkEventCrossing *event)
1305 g_return_val_if_fail (GTK_IS_RANGE (widget), FALSE);
1306 g_return_val_if_fail (event != NULL, FALSE);
1308 range = GTK_RANGE (widget);
1310 range->layout->mouse_x = event->x;
1311 range->layout->mouse_y = event->y;
1313 if (gtk_range_update_mouse_location (range))
1314 gtk_widget_queue_draw (widget);
1320 gtk_range_leave_notify (GtkWidget *widget,
1321 GdkEventCrossing *event)
1325 g_return_val_if_fail (GTK_IS_RANGE (widget), FALSE);
1326 g_return_val_if_fail (event != NULL, FALSE);
1328 range = GTK_RANGE (widget);
1330 range->layout->mouse_x = -1;
1331 range->layout->mouse_y = -1;
1333 if (gtk_range_update_mouse_location (range))
1334 gtk_widget_queue_draw (widget);
1340 gtk_range_adjustment_changed (GtkAdjustment *adjustment,
1345 g_return_if_fail (adjustment != NULL);
1346 g_return_if_fail (data != NULL);
1348 range = GTK_RANGE (data);
1350 range->need_recalc = TRUE;
1351 gtk_widget_queue_draw (GTK_WIDGET (range));
1353 /* Note that we don't round off to range->round_digits here.
1354 * that's because it's really broken to change a value
1355 * in response to a change signal on that value; round_digits
1356 * is therefore defined to be a filter on what the GtkRange
1357 * can input into the adjustment, not a filter that the GtkRange
1358 * will enforce on the adjustment.
1363 gtk_range_adjustment_value_changed (GtkAdjustment *adjustment,
1368 g_return_if_fail (adjustment != NULL);
1369 g_return_if_fail (data != NULL);
1371 range = GTK_RANGE (data);
1373 range->need_recalc = TRUE;
1375 gtk_widget_queue_draw (GTK_WIDGET (range));
1376 /* This is so we don't lag the widget being scrolled. */
1377 if (GTK_WIDGET_REALIZED (range))
1378 gdk_window_process_updates (GTK_WIDGET (range)->window, TRUE);
1380 /* Note that we don't round off to range->round_digits here.
1381 * that's because it's really broken to change a value
1382 * in response to a change signal on that value; round_digits
1383 * is therefore defined to be a filter on what the GtkRange
1384 * can input into the adjustment, not a filter that the GtkRange
1385 * will enforce on the adjustment.
1388 g_signal_emit (G_OBJECT (range), signals[VALUE_CHANGED], 0);
1392 gtk_range_style_set (GtkWidget *widget,
1393 GtkStyle *previous_style)
1397 g_return_if_fail (widget != NULL);
1398 g_return_if_fail (GTK_IS_RANGE (widget));
1400 range = GTK_RANGE (widget);
1402 range->need_recalc = TRUE;
1404 (* GTK_WIDGET_CLASS (parent_class)->style_set) (widget, previous_style);
1408 step_back (GtkRange *range)
1412 newval = range->adjustment->value - range->adjustment->step_increment;
1413 gtk_range_internal_set_value (range, newval);
1417 step_forward (GtkRange *range)
1421 newval = range->adjustment->value + range->adjustment->step_increment;
1423 gtk_range_internal_set_value (range, newval);
1428 page_back (GtkRange *range)
1432 newval = range->adjustment->value - range->adjustment->page_increment;
1433 gtk_range_internal_set_value (range, newval);
1437 page_forward (GtkRange *range)
1441 newval = range->adjustment->value + range->adjustment->page_increment;
1443 gtk_range_internal_set_value (range, newval);
1447 gtk_range_scroll (GtkRange *range,
1448 GtkScrollType scroll)
1452 case GTK_SCROLL_STEP_LEFT:
1453 if (should_invert (range))
1454 step_forward (range);
1459 case GTK_SCROLL_STEP_UP:
1460 if (should_invert (range))
1461 step_forward (range);
1466 case GTK_SCROLL_STEP_RIGHT:
1467 if (should_invert (range))
1470 step_forward (range);
1473 case GTK_SCROLL_STEP_DOWN:
1474 if (should_invert (range))
1477 step_forward (range);
1480 case GTK_SCROLL_STEP_BACKWARD:
1484 case GTK_SCROLL_STEP_FORWARD:
1485 step_forward (range);
1488 case GTK_SCROLL_PAGE_LEFT:
1489 if (should_invert (range))
1490 page_forward (range);
1495 case GTK_SCROLL_PAGE_UP:
1496 if (should_invert (range))
1497 page_forward (range);
1502 case GTK_SCROLL_PAGE_RIGHT:
1503 if (should_invert (range))
1506 page_forward (range);
1509 case GTK_SCROLL_PAGE_DOWN:
1510 if (should_invert (range))
1513 page_forward (range);
1516 case GTK_SCROLL_PAGE_BACKWARD:
1520 case GTK_SCROLL_PAGE_FORWARD:
1521 page_forward (range);
1524 case GTK_SCROLL_START:
1525 gtk_range_internal_set_value (range,
1526 range->adjustment->lower);
1529 case GTK_SCROLL_END:
1530 gtk_range_internal_set_value (range,
1531 range->adjustment->upper - range->adjustment->page_size);
1534 case GTK_SCROLL_JUMP:
1535 /* Used by CList, range doesn't use it. */
1538 case GTK_SCROLL_NONE:
1544 gtk_range_move_slider (GtkRange *range,
1545 GtkScrollType scroll)
1547 gtk_range_scroll (range, scroll);
1549 /* Policy DELAYED makes sense with key events,
1550 * but DISCONTINUOUS doesn't, so we update immediately
1553 if (range->update_policy == GTK_UPDATE_DISCONTINUOUS)
1554 gtk_range_update_value (range);
1558 gtk_range_get_props (GtkRange *range,
1561 gint *trough_border,
1562 gint *stepper_spacing)
1564 GtkWidget *widget = GTK_WIDGET (range);
1565 gint tmp_slider_width, tmp_stepper_size, tmp_trough_border, tmp_stepper_spacing;
1567 gtk_widget_style_get (widget,
1568 "slider_width", &tmp_slider_width,
1569 "trough_border", &tmp_trough_border,
1570 "stepper_size", &tmp_stepper_size,
1571 "stepper_spacing", &tmp_stepper_spacing,
1575 *slider_width = tmp_slider_width;
1578 *trough_border = tmp_trough_border;
1581 *stepper_size = tmp_stepper_size;
1583 if (stepper_spacing)
1584 *stepper_spacing = tmp_stepper_spacing;
1587 #define POINT_IN_RECT(xcoord, ycoord, rect) \
1588 ((xcoord) >= (rect).x && \
1589 (xcoord) < ((rect).x + (rect).width) && \
1590 (ycoord) >= (rect).y && \
1591 (ycoord) < ((rect).y + (rect).height))
1593 /* Update mouse location, return TRUE if it changes */
1595 gtk_range_update_mouse_location (GtkRange *range)
1601 widget = GTK_WIDGET (range);
1603 old = range->layout->mouse_location;
1605 x = range->layout->mouse_x;
1606 y = range->layout->mouse_y;
1608 if (range->layout->grab_location != MOUSE_OUTSIDE)
1609 range->layout->mouse_location = range->layout->grab_location;
1610 else if (POINT_IN_RECT (x, y, range->layout->stepper_a))
1611 range->layout->mouse_location = MOUSE_STEPPER_A;
1612 else if (POINT_IN_RECT (x, y, range->layout->stepper_b))
1613 range->layout->mouse_location = MOUSE_STEPPER_B;
1614 else if (POINT_IN_RECT (x, y, range->layout->stepper_c))
1615 range->layout->mouse_location = MOUSE_STEPPER_C;
1616 else if (POINT_IN_RECT (x, y, range->layout->stepper_d))
1617 range->layout->mouse_location = MOUSE_STEPPER_D;
1618 else if (POINT_IN_RECT (x, y, range->layout->slider))
1619 range->layout->mouse_location = MOUSE_SLIDER;
1620 else if (POINT_IN_RECT (x, y, range->layout->trough))
1621 range->layout->mouse_location = MOUSE_TROUGH;
1622 else if (POINT_IN_RECT (x, y, widget->allocation))
1623 range->layout->mouse_location = MOUSE_WIDGET;
1625 range->layout->mouse_location = MOUSE_OUTSIDE;
1627 return old != range->layout->mouse_location;
1630 /* Clamp rect, border inside widget->allocation, such that we prefer
1631 * to take space from border not rect in all directions, and prefer to
1632 * give space to border over rect in one direction.
1635 clamp_dimensions (GtkWidget *widget,
1638 gboolean border_expands_horizontally)
1640 gint extra, shortage;
1642 g_return_if_fail (rect->x == 0);
1643 g_return_if_fail (rect->y == 0);
1644 g_return_if_fail (rect->width >= 0);
1645 g_return_if_fail (rect->height >= 0);
1649 extra = widget->allocation.width - border->left - border->right - rect->width;
1652 if (border_expands_horizontally)
1654 border->left += extra / 2;
1655 border->right += extra / 2 + extra % 2;
1659 rect->width += extra;
1663 /* See if we can fit rect, if not kill the border */
1664 shortage = rect->width - widget->allocation.width;
1667 rect->width = widget->allocation.width;
1668 /* lose the border */
1674 /* See if we can fit rect with borders */
1675 shortage = rect->width + border->left + border->right -
1676 widget->allocation.width;
1679 /* Shrink borders */
1680 border->left -= shortage / 2;
1681 border->right -= shortage / 2 + shortage % 2;
1687 extra = widget->allocation.height - border->top - border->bottom - rect->height;
1690 if (border_expands_horizontally)
1692 /* don't expand border vertically */
1693 rect->height += extra;
1697 border->top += extra / 2;
1698 border->bottom += extra / 2 + extra % 2;
1702 /* See if we can fit rect, if not kill the border */
1703 shortage = rect->height - widget->allocation.height;
1706 rect->height = widget->allocation.height;
1707 /* lose the border */
1713 /* See if we can fit rect with borders */
1714 shortage = rect->height + border->top + border->bottom -
1715 widget->allocation.height;
1718 /* Shrink borders */
1719 border->top -= shortage / 2;
1720 border->bottom -= shortage / 2 + shortage % 2;
1726 gtk_range_calc_request (GtkRange *range,
1730 gint stepper_spacing,
1731 GdkRectangle *range_rect,
1734 gint *slider_length_p)
1744 if (GTK_RANGE_GET_CLASS (range)->get_range_border)
1745 (* GTK_RANGE_GET_CLASS (range)->get_range_border) (range, border);
1748 if (range->has_stepper_a)
1750 if (range->has_stepper_b)
1752 if (range->has_stepper_c)
1754 if (range->has_stepper_d)
1757 slider_length = range->min_slider_size;
1762 /* We never expand to fill available space in the small dimension
1763 * (i.e. vertical scrollbars are always a fixed width)
1765 if (range->orientation == GTK_ORIENTATION_VERTICAL)
1767 range_rect->width = trough_border * 2 + slider_width;
1768 range_rect->height = stepper_size * n_steppers + stepper_spacing * 2 + trough_border * 2 + slider_length;
1772 range_rect->width = stepper_size * n_steppers + stepper_spacing * 2 + trough_border * 2 + slider_length;
1773 range_rect->height = trough_border * 2 + slider_width;
1777 *n_steppers_p = n_steppers;
1779 if (slider_length_p)
1780 *slider_length_p = slider_length;
1784 gtk_range_calc_layout (GtkRange *range)
1786 gint slider_width, stepper_size, trough_border, stepper_spacing;
1790 GdkRectangle range_rect;
1791 GtkRangeLayout *layout;
1794 if (!range->need_recalc)
1797 /* If we have a too-small allocation, we prefer the steppers over
1798 * the trough/slider, probably the steppers are a more useful
1799 * feature in small spaces.
1801 * Also, we prefer to draw the range itself rather than the border
1802 * areas if there's a conflict, since the borders will be decoration
1803 * not controls. Though this depends on subclasses cooperating by
1804 * not drawing on range->range_rect.
1807 widget = GTK_WIDGET (range);
1808 layout = range->layout;
1810 gtk_range_get_props (range,
1811 &slider_width, &stepper_size, &trough_border, &stepper_spacing);
1813 gtk_range_calc_request (range,
1814 slider_width, stepper_size, trough_border, stepper_spacing,
1815 &range_rect, &border, &n_steppers, &slider_length);
1817 /* We never expand to fill available space in the small dimension
1818 * (i.e. vertical scrollbars are always a fixed width)
1820 if (range->orientation == GTK_ORIENTATION_VERTICAL)
1822 clamp_dimensions (widget, &range_rect, &border, TRUE);
1826 clamp_dimensions (widget, &range_rect, &border, FALSE);
1829 range_rect.x = border.left;
1830 range_rect.y = border.top;
1832 range->range_rect = range_rect;
1834 if (range->orientation == GTK_ORIENTATION_VERTICAL)
1836 gint stepper_width, stepper_height;
1838 /* Steppers are the width of the range, and stepper_size in
1839 * height, or if we don't have enough height, divided equally
1840 * among available space.
1842 stepper_width = range_rect.width - trough_border * 2;
1844 if (stepper_width < 1)
1845 stepper_width = range_rect.width; /* screw the trough border */
1847 if (n_steppers == 0)
1848 stepper_height = 0; /* avoid divide by n_steppers */
1850 stepper_height = MIN (stepper_size, (range_rect.height / n_steppers));
1854 layout->stepper_a.x = range_rect.x + trough_border;
1855 layout->stepper_a.y = range_rect.y + trough_border;
1857 if (range->has_stepper_a)
1859 layout->stepper_a.width = stepper_width;
1860 layout->stepper_a.height = stepper_height;
1864 layout->stepper_a.width = 0;
1865 layout->stepper_a.height = 0;
1870 layout->stepper_b.x = layout->stepper_a.x;
1871 layout->stepper_b.y = layout->stepper_a.y + layout->stepper_a.height;
1873 if (range->has_stepper_b)
1875 layout->stepper_b.width = stepper_width;
1876 layout->stepper_b.height = stepper_height;
1880 layout->stepper_b.width = 0;
1881 layout->stepper_b.height = 0;
1886 if (range->has_stepper_d)
1888 layout->stepper_d.width = stepper_width;
1889 layout->stepper_d.height = stepper_height;
1893 layout->stepper_d.width = 0;
1894 layout->stepper_d.height = 0;
1897 layout->stepper_d.x = layout->stepper_a.x;
1898 layout->stepper_d.y = range_rect.y + range_rect.height - layout->stepper_d.height - trough_border;
1902 if (range->has_stepper_c)
1904 layout->stepper_c.width = stepper_width;
1905 layout->stepper_c.height = stepper_height;
1909 layout->stepper_c.width = 0;
1910 layout->stepper_c.height = 0;
1913 layout->stepper_c.x = layout->stepper_a.x;
1914 layout->stepper_c.y = layout->stepper_d.y - layout->stepper_c.height;
1916 /* Now the trough is the remaining space between steppers B and C,
1919 layout->trough.x = range_rect.x;
1920 layout->trough.y = layout->stepper_b.y + layout->stepper_b.height;
1921 layout->trough.width = range_rect.width;
1922 layout->trough.height = layout->stepper_c.y - (layout->stepper_b.y + layout->stepper_b.height);
1924 /* Slider fits into the trough, with stepper_spacing on either side,
1925 * and the size/position based on the adjustment or fixed, depending.
1927 layout->slider.x = layout->trough.x + trough_border;
1928 layout->slider.width = layout->trough.width - trough_border * 2;
1930 /* Compute slider position/length */
1932 gint y, bottom, top, height;
1934 top = layout->trough.y + stepper_spacing;
1935 bottom = layout->trough.y + layout->trough.height - stepper_spacing;
1937 /* slider height is the fraction (page_size /
1938 * total_adjustment_range) times the trough height in pixels
1940 height = ((bottom - top) * (range->adjustment->page_size /
1941 (range->adjustment->upper - range->adjustment->lower)));
1943 if (height < range->min_slider_size ||
1944 range->slider_size_fixed)
1945 height = range->min_slider_size;
1947 height = MIN (height, (layout->trough.height - stepper_spacing * 2));
1951 y += (bottom - top - height) * ((range->adjustment->value - range->adjustment->lower) /
1952 (range->adjustment->upper - range->adjustment->lower - range->adjustment->page_size));
1954 y = CLAMP (y, top, bottom);
1956 if (should_invert (range))
1957 y = bottom - (y - top + height);
1959 layout->slider.y = y;
1960 layout->slider.height = height;
1962 /* These are publically exported */
1963 range->slider_start = layout->slider.y;
1964 range->slider_end = layout->slider.y + layout->slider.height;
1969 gint stepper_width, stepper_height;
1971 /* Steppers are the height of the range, and stepper_size in
1972 * width, or if we don't have enough width, divided equally
1973 * among available space.
1975 stepper_height = range_rect.height - trough_border * 2;
1977 if (stepper_height < 1)
1978 stepper_height = range_rect.height; /* screw the trough border */
1980 if (n_steppers == 0)
1981 stepper_width = 0; /* avoid divide by n_steppers */
1983 stepper_width = MIN (stepper_size, (range_rect.width / n_steppers));
1987 layout->stepper_a.x = range_rect.x + trough_border;
1988 layout->stepper_a.y = range_rect.y + trough_border;
1990 if (range->has_stepper_a)
1992 layout->stepper_a.width = stepper_width;
1993 layout->stepper_a.height = stepper_height;
1997 layout->stepper_a.width = 0;
1998 layout->stepper_a.height = 0;
2003 layout->stepper_b.x = layout->stepper_a.x + layout->stepper_a.width;
2004 layout->stepper_b.y = layout->stepper_a.y;
2006 if (range->has_stepper_b)
2008 layout->stepper_b.width = stepper_width;
2009 layout->stepper_b.height = stepper_height;
2013 layout->stepper_b.width = 0;
2014 layout->stepper_b.height = 0;
2019 if (range->has_stepper_d)
2021 layout->stepper_d.width = stepper_width;
2022 layout->stepper_d.height = stepper_height;
2026 layout->stepper_d.width = 0;
2027 layout->stepper_d.height = 0;
2030 layout->stepper_d.x = range_rect.x + range_rect.width - layout->stepper_d.width - trough_border;
2031 layout->stepper_d.y = layout->stepper_a.y;
2036 if (range->has_stepper_c)
2038 layout->stepper_c.width = stepper_width;
2039 layout->stepper_c.height = stepper_height;
2043 layout->stepper_c.width = 0;
2044 layout->stepper_c.height = 0;
2047 layout->stepper_c.x = layout->stepper_d.x - layout->stepper_c.width;
2048 layout->stepper_c.y = layout->stepper_a.y;
2050 /* Now the trough is the remaining space between steppers B and C,
2053 layout->trough.x = layout->stepper_b.x + layout->stepper_b.width;
2054 layout->trough.y = range_rect.y;
2056 layout->trough.width = layout->stepper_c.x - (layout->stepper_b.x + layout->stepper_b.width);
2057 layout->trough.height = range_rect.height;
2059 /* Slider fits into the trough, with stepper_spacing on either side,
2060 * and the size/position based on the adjustment or fixed, depending.
2062 layout->slider.y = layout->trough.y + trough_border;
2063 layout->slider.height = layout->trough.height - trough_border * 2;
2065 /* Compute slider position/length */
2067 gint x, left, right, width;
2069 left = layout->trough.x + stepper_spacing;
2070 right = layout->trough.x + layout->trough.width - stepper_spacing;
2072 /* slider width is the fraction (page_size /
2073 * total_adjustment_range) times the trough width in pixels
2075 width = ((right - left) * (range->adjustment->page_size /
2076 (range->adjustment->upper - range->adjustment->lower)));
2078 if (width < range->min_slider_size ||
2079 range->slider_size_fixed)
2080 width = range->min_slider_size;
2082 width = MIN (width, (layout->trough.width - stepper_spacing * 2));
2086 x += (right - left - width) * ((range->adjustment->value - range->adjustment->lower) /
2087 (range->adjustment->upper - range->adjustment->lower - range->adjustment->page_size));
2089 x = CLAMP (x, left, right);
2091 if (should_invert (range))
2092 x = right - (x - left + width);
2094 layout->slider.x = x;
2095 layout->slider.width = width;
2097 /* These are publically exported */
2098 range->slider_start = layout->slider.x;
2099 range->slider_end = layout->slider.x + layout->slider.width;
2103 gtk_range_update_mouse_location (range);
2106 static GdkRectangle*
2107 get_area (GtkRange *range,
2108 MouseLocation location)
2112 case MOUSE_STEPPER_A:
2113 return &range->layout->stepper_a;
2114 case MOUSE_STEPPER_B:
2115 return &range->layout->stepper_b;
2116 case MOUSE_STEPPER_C:
2117 return &range->layout->stepper_c;
2118 case MOUSE_STEPPER_D:
2119 return &range->layout->stepper_d;
2121 return &range->layout->trough;
2123 return &range->layout->slider;
2129 g_warning (G_STRLOC": bug");
2134 gtk_range_internal_set_value (GtkRange *range,
2137 value = CLAMP (value, range->adjustment->lower,
2138 (range->adjustment->upper - range->adjustment->page_size));
2140 if (range->round_digits >= 0)
2144 /* This is just so darn lame. */
2145 g_snprintf (buffer, 128, "%0.*f",
2146 range->round_digits, value);
2147 sscanf (buffer, "%lf", &value);
2150 if (range->adjustment->value != value)
2152 range->need_recalc = TRUE;
2154 gtk_widget_queue_draw (GTK_WIDGET (range));
2156 switch (range->update_policy)
2158 case GTK_UPDATE_CONTINUOUS:
2159 gtk_adjustment_set_value (range->adjustment, value);
2162 /* Delayed means we update after a period of inactivity */
2163 case GTK_UPDATE_DELAYED:
2164 gtk_range_reset_update_timer (range);
2167 /* Discontinuous means we update on button release */
2168 case GTK_UPDATE_DISCONTINUOUS:
2169 /* don't emit value_changed signal */
2170 range->adjustment->value = value;
2171 range->update_pending = TRUE;
2178 gtk_range_update_value (GtkRange *range)
2180 gtk_range_remove_update_timer (range);
2182 if (range->update_pending)
2184 gtk_adjustment_value_changed (range->adjustment);
2186 range->update_pending = FALSE;
2190 struct _GtkRangeStepTimer
2197 second_timeout (gpointer data)
2201 range = GTK_RANGE (data);
2203 gtk_range_scroll (range, range->timer->step);
2209 initial_timeout (gpointer data)
2213 range = GTK_RANGE (data);
2215 range->timer->timeout_id =
2216 g_timeout_add (SCROLL_LATER_DELAY,
2225 gtk_range_add_step_timer (GtkRange *range,
2228 g_return_if_fail (range->timer == NULL);
2229 g_return_if_fail (step != GTK_SCROLL_NONE);
2231 range->timer = g_new (GtkRangeStepTimer, 1);
2233 range->timer->timeout_id =
2234 g_timeout_add (SCROLL_INITIAL_DELAY,
2237 range->timer->step = step;
2241 gtk_range_remove_step_timer (GtkRange *range)
2245 if (range->timer->timeout_id != 0)
2246 g_source_remove (range->timer->timeout_id);
2248 g_free (range->timer);
2250 range->timer = NULL;
2255 update_timeout (gpointer data)
2259 range = GTK_RANGE (data);
2261 gtk_range_update_value (range);
2263 range->update_timeout_id = 0;
2270 gtk_range_reset_update_timer (GtkRange *range)
2272 gtk_range_remove_update_timer (range);
2274 range->update_timeout_id = g_timeout_add (UPDATE_DELAY,
2280 gtk_range_remove_update_timer (GtkRange *range)
2282 if (range->update_timeout_id != 0)
2284 g_source_remove (range->update_timeout_id);
2285 range->update_timeout_id = 0;