1 /* GTK - The GIMP Toolkit
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
21 * Modified by the GTK+ Team and others 1997-1999. See the AUTHORS
22 * file for a list of people on the GTK+ Team. See the ChangeLog
23 * files for a list of changes. These files are distributed with
24 * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
30 #include "gtksignal.h"
33 #define SCROLL_TIMER_LENGTH 20
34 #define SCROLL_INITIAL_DELAY 100
35 #define SCROLL_DELAY_LENGTH 300
37 #define RANGE_CLASS(w) GTK_RANGE_CLASS (GTK_OBJECT (w)->klass)
44 static void gtk_range_class_init (GtkRangeClass *klass);
45 static void gtk_range_init (GtkRange *range);
46 static void gtk_range_set_arg (GtkObject *object,
49 static void gtk_range_get_arg (GtkObject *object,
52 static void gtk_range_destroy (GtkObject *object);
53 static void gtk_range_finalize (GtkObject *object);
54 static void gtk_range_draw (GtkWidget *widget,
56 static void gtk_range_draw_focus (GtkWidget *widget);
57 static void gtk_range_unrealize (GtkWidget *widget);
58 static gint gtk_range_expose (GtkWidget *widget,
59 GdkEventExpose *event);
60 static gint gtk_range_button_press (GtkWidget *widget,
61 GdkEventButton *event);
62 static gint gtk_range_button_release (GtkWidget *widget,
63 GdkEventButton *event);
64 static gint gtk_range_motion_notify (GtkWidget *widget,
65 GdkEventMotion *event);
66 static gint gtk_range_key_press (GtkWidget *widget,
68 static gint gtk_range_enter_notify (GtkWidget *widget,
69 GdkEventCrossing *event);
70 static gint gtk_range_leave_notify (GtkWidget *widget,
71 GdkEventCrossing *event);
72 static gint gtk_range_focus_in (GtkWidget *widget,
73 GdkEventFocus *event);
74 static gint gtk_range_focus_out (GtkWidget *widget,
75 GdkEventFocus *event);
76 static void gtk_range_style_set (GtkWidget *widget,
77 GtkStyle *previous_style);
79 static void gtk_real_range_draw_trough (GtkRange *range);
80 static void gtk_real_range_draw_slider (GtkRange *range);
81 static gint gtk_real_range_timer (GtkRange *range);
82 static gint gtk_range_scroll (GtkRange *range,
85 static void gtk_range_add_timer (GtkRange *range);
86 static void gtk_range_remove_timer (GtkRange *range);
88 static void gtk_range_adjustment_changed (GtkAdjustment *adjustment,
90 static void gtk_range_adjustment_value_changed (GtkAdjustment *adjustment,
93 static void gtk_range_trough_hdims (GtkRange *range,
96 static void gtk_range_trough_vdims (GtkRange *range,
100 static GtkWidgetClass *parent_class = NULL;
104 gtk_range_get_type (void)
106 static GtkType range_type = 0;
110 static const GtkTypeInfo range_info =
114 sizeof (GtkRangeClass),
115 (GtkClassInitFunc) gtk_range_class_init,
116 (GtkObjectInitFunc) gtk_range_init,
117 /* reserved_1 */ NULL,
118 /* reserved_2 */ NULL,
119 (GtkClassInitFunc) NULL,
122 range_type = gtk_type_unique (GTK_TYPE_WIDGET, &range_info);
129 gtk_range_class_init (GtkRangeClass *class)
131 GtkObjectClass *object_class;
132 GtkWidgetClass *widget_class;
134 object_class = (GtkObjectClass*) class;
135 widget_class = (GtkWidgetClass*) class;
137 parent_class = gtk_type_class (GTK_TYPE_WIDGET);
139 gtk_object_add_arg_type ("GtkRange::update_policy",
140 GTK_TYPE_UPDATE_TYPE,
144 object_class->set_arg = gtk_range_set_arg;
145 object_class->get_arg = gtk_range_get_arg;
146 object_class->destroy = gtk_range_destroy;
147 object_class->finalize = gtk_range_finalize;
149 widget_class->draw = gtk_range_draw;
150 widget_class->draw_focus = gtk_range_draw_focus;
151 widget_class->unrealize = gtk_range_unrealize;
152 widget_class->expose_event = gtk_range_expose;
153 widget_class->button_press_event = gtk_range_button_press;
154 widget_class->button_release_event = gtk_range_button_release;
155 widget_class->motion_notify_event = gtk_range_motion_notify;
156 widget_class->key_press_event = gtk_range_key_press;
157 widget_class->enter_notify_event = gtk_range_enter_notify;
158 widget_class->leave_notify_event = gtk_range_leave_notify;
159 widget_class->focus_in_event = gtk_range_focus_in;
160 widget_class->focus_out_event = gtk_range_focus_out;
161 widget_class->style_set = gtk_range_style_set;
163 class->slider_width = 11;
164 class->stepper_size = 11;
165 class->stepper_slider_spacing = 1;
166 class->min_slider_size = 7;
169 class->step_forw = 3;
170 class->step_back = 4;
171 class->draw_background = NULL;
172 class->clear_background = NULL;
173 class->draw_trough = gtk_real_range_draw_trough;
174 class->draw_slider = gtk_real_range_draw_slider;
175 class->draw_step_forw = NULL;
176 class->draw_step_back = NULL;
177 class->trough_click = NULL;
178 class->trough_keys = NULL;
179 class->motion = NULL;
180 class->timer = gtk_real_range_timer;
184 gtk_range_set_arg (GtkObject *object,
190 range = GTK_RANGE (object);
194 case ARG_UPDATE_POLICY:
195 gtk_range_set_update_policy (range, GTK_VALUE_ENUM (*arg));
203 gtk_range_get_arg (GtkObject *object,
209 range = GTK_RANGE (object);
213 case ARG_UPDATE_POLICY:
214 GTK_VALUE_ENUM (*arg) = range->policy;
217 arg->type = GTK_TYPE_INVALID;
223 gtk_range_init (GtkRange *range)
225 range->trough = NULL;
226 range->slider = NULL;
227 range->step_forw = NULL;
228 range->step_back = NULL;
230 range->x_click_point = 0;
231 range->y_click_point = 0;
234 range->policy = GTK_UPDATE_CONTINUOUS;
235 range->scroll_type = GTK_SCROLL_NONE;
237 range->click_child = 0;
238 range->need_timer = FALSE;
240 range->old_value = 0.0;
241 range->old_lower = 0.0;
242 range->old_upper = 0.0;
243 range->old_page_size = 0.0;
244 range->adjustment = NULL;
248 gtk_range_get_adjustment (GtkRange *range)
250 g_return_val_if_fail (range != NULL, NULL);
251 g_return_val_if_fail (GTK_IS_RANGE (range), NULL);
253 return range->adjustment;
257 gtk_range_set_update_policy (GtkRange *range,
258 GtkUpdateType policy)
260 g_return_if_fail (range != NULL);
261 g_return_if_fail (GTK_IS_RANGE (range));
263 range->policy = policy;
267 gtk_range_set_adjustment (GtkRange *range,
268 GtkAdjustment *adjustment)
270 g_return_if_fail (range != NULL);
271 g_return_if_fail (GTK_IS_RANGE (range));
274 adjustment = (GtkAdjustment*) gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
276 g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
278 if (range->adjustment != adjustment)
280 if (range->adjustment)
282 gtk_signal_disconnect_by_data (GTK_OBJECT (range->adjustment),
284 gtk_object_unref (GTK_OBJECT (range->adjustment));
287 range->adjustment = adjustment;
288 gtk_object_ref (GTK_OBJECT (adjustment));
289 gtk_object_sink (GTK_OBJECT (adjustment));
291 gtk_signal_connect (GTK_OBJECT (adjustment), "changed",
292 (GtkSignalFunc) gtk_range_adjustment_changed,
294 gtk_signal_connect (GTK_OBJECT (adjustment), "value_changed",
295 (GtkSignalFunc) gtk_range_adjustment_value_changed,
298 range->old_value = adjustment->value;
299 range->old_lower = adjustment->lower;
300 range->old_upper = adjustment->upper;
301 range->old_page_size = adjustment->page_size;
303 gtk_range_adjustment_changed (adjustment, (gpointer) range);
308 gtk_range_draw_background (GtkRange *range)
310 g_return_if_fail (range != NULL);
311 g_return_if_fail (GTK_IS_RANGE (range));
313 if (range->trough && RANGE_CLASS (range)->draw_background)
314 (* RANGE_CLASS (range)->draw_background) (range);
318 gtk_range_clear_background (GtkRange *range)
320 g_return_if_fail (range != NULL);
321 g_return_if_fail (GTK_IS_RANGE (range));
323 if (range->trough && RANGE_CLASS (range)->clear_background)
324 (* RANGE_CLASS (range)->clear_background) (range);
328 gtk_range_draw_trough (GtkRange *range)
330 g_return_if_fail (range != NULL);
331 g_return_if_fail (GTK_IS_RANGE (range));
333 if (range->trough && RANGE_CLASS (range)->draw_trough)
334 (* RANGE_CLASS (range)->draw_trough) (range);
338 gtk_range_draw_slider (GtkRange *range)
340 g_return_if_fail (range != NULL);
341 g_return_if_fail (GTK_IS_RANGE (range));
343 if (range->slider && RANGE_CLASS (range)->draw_slider)
344 (* RANGE_CLASS (range)->draw_slider) (range);
348 gtk_range_draw_step_forw (GtkRange *range)
350 g_return_if_fail (range != NULL);
351 g_return_if_fail (GTK_IS_RANGE (range));
353 if (range->step_forw && RANGE_CLASS (range)->draw_step_forw)
354 (* RANGE_CLASS (range)->draw_step_forw) (range);
358 gtk_range_draw_step_back (GtkRange *range)
360 g_return_if_fail (range != NULL);
361 g_return_if_fail (GTK_IS_RANGE (range));
363 if (range->step_back && RANGE_CLASS (range)->draw_step_back)
364 (* RANGE_CLASS (range)->draw_step_back) (range);
368 gtk_range_slider_update (GtkRange *range)
370 g_return_if_fail (range != NULL);
371 g_return_if_fail (GTK_IS_RANGE (range));
373 if (RANGE_CLASS (range)->slider_update)
374 (* RANGE_CLASS (range)->slider_update) (range);
378 gtk_range_trough_click (GtkRange *range,
383 g_return_val_if_fail (range != NULL, GTK_TROUGH_NONE);
384 g_return_val_if_fail (GTK_IS_RANGE (range), GTK_TROUGH_NONE);
386 if (RANGE_CLASS (range)->trough_click)
387 return (* RANGE_CLASS (range)->trough_click) (range, x, y, jump_perc);
389 return GTK_TROUGH_NONE;
393 gtk_range_default_hslider_update (GtkRange *range)
399 g_return_if_fail (range != NULL);
400 g_return_if_fail (GTK_IS_RANGE (range));
402 if (GTK_WIDGET_REALIZED (range))
404 gtk_range_trough_hdims (range, &left, &right);
407 if (range->adjustment->value < range->adjustment->lower)
409 range->adjustment->value = range->adjustment->lower;
410 gtk_signal_emit_by_name (GTK_OBJECT (range->adjustment), "value_changed");
412 else if (range->adjustment->value > range->adjustment->upper)
414 range->adjustment->value = range->adjustment->upper;
415 gtk_signal_emit_by_name (GTK_OBJECT (range->adjustment), "value_changed");
418 if (range->adjustment->lower != (range->adjustment->upper - range->adjustment->page_size))
419 x += ((right - left) * (range->adjustment->value - range->adjustment->lower) /
420 (range->adjustment->upper - range->adjustment->lower - range->adjustment->page_size));
427 gdk_window_move (range->slider, x, GTK_WIDGET (range)->style->klass->ythickness);
432 gtk_range_default_vslider_update (GtkRange *range)
438 g_return_if_fail (range != NULL);
439 g_return_if_fail (GTK_IS_RANGE (range));
441 if (GTK_WIDGET_REALIZED (range))
443 gtk_range_trough_vdims (range, &top, &bottom);
446 if (range->adjustment->value < range->adjustment->lower)
448 range->adjustment->value = range->adjustment->lower;
449 gtk_signal_emit_by_name (GTK_OBJECT (range->adjustment), "value_changed");
451 else if (range->adjustment->value > range->adjustment->upper)
453 range->adjustment->value = range->adjustment->upper;
454 gtk_signal_emit_by_name (GTK_OBJECT (range->adjustment), "value_changed");
457 if (range->adjustment->lower != (range->adjustment->upper - range->adjustment->page_size))
458 y += ((bottom - top) * (range->adjustment->value - range->adjustment->lower) /
459 (range->adjustment->upper - range->adjustment->lower - range->adjustment->page_size));
466 gdk_window_move (range->slider, GTK_WIDGET (range)->style->klass->xthickness, y);
471 gtk_range_default_htrough_click (GtkRange *range,
483 g_return_val_if_fail (range != NULL, GTK_TROUGH_NONE);
484 g_return_val_if_fail (GTK_IS_RANGE (range), GTK_TROUGH_NONE);
486 ythickness = GTK_WIDGET (range)->style->klass->ythickness;
488 gtk_range_trough_hdims (range, &left, &right);
489 gdk_window_get_size (range->slider, &slider_length, NULL);
490 right += slider_length;
492 if ((x > left) && (y > ythickness))
494 gdk_window_get_size (range->trough, &trough_width, &trough_height);
496 if ((x < right) && (y < (trough_height - ythickness)))
500 *jump_perc = ((gdouble) (x - left)) / ((gdouble) (right - left));
501 return GTK_TROUGH_JUMP;
504 gdk_window_get_position (range->slider, &slider_x, NULL);
507 return GTK_TROUGH_START;
509 return GTK_TROUGH_END;
513 return GTK_TROUGH_NONE;
517 gtk_range_default_vtrough_click (GtkRange *range,
529 g_return_val_if_fail (range != NULL, GTK_TROUGH_NONE);
530 g_return_val_if_fail (GTK_IS_RANGE (range), GTK_TROUGH_NONE);
532 xthickness = GTK_WIDGET (range)->style->klass->xthickness;
534 gtk_range_trough_vdims (range, &top, &bottom);
535 gdk_window_get_size (range->slider, NULL, &slider_length);
536 bottom += slider_length;
538 if ((x > xthickness) && (y > top))
540 gdk_window_get_size (range->trough, &trough_width, &trough_height);
542 if ((x < (trough_width - xthickness) && (y < bottom)))
546 *jump_perc = ((gdouble) (y - top)) / ((gdouble) (bottom - top));
548 return GTK_TROUGH_JUMP;
551 gdk_window_get_position (range->slider, NULL, &slider_y);
554 return GTK_TROUGH_START;
556 return GTK_TROUGH_END;
560 return GTK_TROUGH_NONE;
564 gtk_range_default_hmotion (GtkRange *range,
570 gint slider_x, slider_y;
573 g_return_if_fail (range != NULL);
574 g_return_if_fail (GTK_IS_RANGE (range));
576 range = GTK_RANGE (range);
578 gdk_window_get_position (range->slider, &slider_x, &slider_y);
579 gtk_range_trough_hdims (range, &left, &right);
584 new_pos = slider_x + xdelta;
588 else if (new_pos > right)
591 old_value = range->adjustment->value;
592 range->adjustment->value = ((range->adjustment->upper -
593 range->adjustment->lower -
594 range->adjustment->page_size) *
595 (new_pos - left) / (right - left) +
596 range->adjustment->lower);
598 if (range->digits >= 0)
602 sprintf (buffer, "%0.*f", range->digits, range->adjustment->value);
603 sscanf (buffer, "%f", &range->adjustment->value);
606 if (old_value != range->adjustment->value)
608 if (range->policy == GTK_UPDATE_CONTINUOUS)
610 gtk_signal_emit_by_name (GTK_OBJECT (range->adjustment), "value_changed");
614 gtk_range_slider_update (range);
615 gtk_range_clear_background (range);
617 if (range->policy == GTK_UPDATE_DELAYED)
619 gtk_range_remove_timer (range);
620 range->timer = gtk_timeout_add (SCROLL_DELAY_LENGTH,
621 (GtkFunction) RANGE_CLASS (range)->timer,
629 gtk_range_default_vmotion (GtkRange *range,
635 gint slider_x, slider_y;
638 g_return_if_fail (range != NULL);
639 g_return_if_fail (GTK_IS_RANGE (range));
641 range = GTK_RANGE (range);
643 gdk_window_get_position (range->slider, &slider_x, &slider_y);
644 gtk_range_trough_vdims (range, &top, &bottom);
649 new_pos = slider_y + ydelta;
653 else if (new_pos > bottom)
656 old_value = range->adjustment->value;
657 range->adjustment->value = ((range->adjustment->upper -
658 range->adjustment->lower -
659 range->adjustment->page_size) *
660 (new_pos - top) / (bottom - top) +
661 range->adjustment->lower);
663 if (range->digits >= 0)
667 sprintf (buffer, "%0.*f", range->digits, range->adjustment->value);
668 sscanf (buffer, "%f", &range->adjustment->value);
671 if (old_value != range->adjustment->value)
673 if (range->policy == GTK_UPDATE_CONTINUOUS)
675 gtk_signal_emit_by_name (GTK_OBJECT (range->adjustment), "value_changed");
679 gtk_range_slider_update (range);
680 gtk_range_clear_background (range);
682 if (range->policy == GTK_UPDATE_DELAYED)
684 gtk_range_remove_timer (range);
685 range->timer = gtk_timeout_add (SCROLL_DELAY_LENGTH,
686 (GtkFunction) RANGE_CLASS (range)->timer,
695 gtk_range_destroy (GtkObject *object)
699 g_return_if_fail (object != NULL);
700 g_return_if_fail (GTK_IS_RANGE (object));
702 range = GTK_RANGE (object);
704 if (range->adjustment)
705 gtk_signal_disconnect_by_data (GTK_OBJECT (range->adjustment),
708 (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
712 gtk_range_finalize (GtkObject *object)
716 g_return_if_fail (object != NULL);
717 g_return_if_fail (GTK_IS_RANGE (object));
719 range = GTK_RANGE (object);
721 if (range->adjustment)
722 gtk_object_unref (GTK_OBJECT (range->adjustment));
724 (* GTK_OBJECT_CLASS (parent_class)->finalize) (object);
728 gtk_range_draw (GtkWidget *widget,
733 g_return_if_fail (widget != NULL);
734 g_return_if_fail (GTK_IS_RANGE (widget));
735 g_return_if_fail (area != NULL);
737 if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_MAPPED (widget))
739 range = GTK_RANGE (widget);
741 gtk_range_draw_background (range);
742 gtk_range_draw_trough (range);
743 gtk_range_draw_slider (range);
744 gtk_range_draw_step_forw (range);
745 gtk_range_draw_step_back (range);
750 gtk_range_draw_focus (GtkWidget *widget)
752 g_return_if_fail (widget != NULL);
753 g_return_if_fail (GTK_IS_RANGE (widget));
755 if (GTK_WIDGET_DRAWABLE (widget))
756 gtk_range_draw_trough (GTK_RANGE (widget));
760 gtk_range_unrealize (GtkWidget *widget)
764 g_return_if_fail (widget != NULL);
765 g_return_if_fail (GTK_IS_RANGE (widget));
767 range = GTK_RANGE (widget);
771 gdk_window_set_user_data (range->slider, NULL);
772 gdk_window_destroy (range->slider);
773 range->slider = NULL;
777 gdk_window_set_user_data (range->trough, NULL);
778 gdk_window_destroy (range->trough);
779 range->trough = NULL;
781 if (range->step_forw)
783 gdk_window_set_user_data (range->step_forw, NULL);
784 gdk_window_destroy (range->step_forw);
785 range->step_forw = NULL;
787 if (range->step_back)
789 gdk_window_set_user_data (range->step_back, NULL);
790 gdk_window_destroy (range->step_back);
791 range->step_back = NULL;
794 if (GTK_WIDGET_CLASS (parent_class)->unrealize)
795 (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
799 gtk_range_expose (GtkWidget *widget,
800 GdkEventExpose *event)
804 g_return_val_if_fail (widget != NULL, FALSE);
805 g_return_val_if_fail (GTK_IS_RANGE (widget), FALSE);
806 g_return_val_if_fail (event != NULL, FALSE);
808 range = GTK_RANGE (widget);
810 if (event->window == range->trough)
812 /* Don't redraw if we are only exposing the literal trough region.
813 * this may not work correctly if someone overrides the default
814 * trough-drawing handler. (Probably should really pass another
815 * argument - the redrawn area to all the drawing functions)
817 gint xt = widget->style->klass->xthickness;
818 gint yt = widget->style->klass->ythickness;
820 if (!((event->area.x >= xt) &&
821 (event->area.y >= yt) &&
822 (event->area.x + event->area.width <=
823 widget->allocation.width - xt) &&
824 (event->area.y + event->area.height <=
825 widget->allocation.height - yt)))
826 gtk_range_draw_trough (range);
828 else if (event->window == widget->window)
830 gtk_range_draw_background (range);
832 else if (event->window == range->slider)
834 gtk_range_draw_slider (range);
836 else if (event->window == range->step_forw)
838 gtk_range_draw_step_forw (range);
840 else if (event->window == range->step_back)
842 gtk_range_draw_step_back (range);
848 gtk_range_button_press (GtkWidget *widget,
849 GdkEventButton *event)
855 g_return_val_if_fail (widget != NULL, FALSE);
856 g_return_val_if_fail (GTK_IS_RANGE (widget), FALSE);
857 g_return_val_if_fail (event != NULL, FALSE);
859 if (!GTK_WIDGET_HAS_FOCUS (widget))
860 gtk_widget_grab_focus (widget);
863 range = GTK_RANGE (widget);
864 if (range->button == 0)
866 gtk_grab_add (widget);
868 range->button = event->button;
869 range->x_click_point = event->x;
870 range->y_click_point = event->y;
872 if (event->window == range->trough)
874 range->click_child = RANGE_CLASS (range)->trough;
876 if (range->button == 2)
877 trough_part = gtk_range_trough_click (range, event->x, event->y, &jump_perc);
879 trough_part = gtk_range_trough_click (range, event->x, event->y, NULL);
881 range->scroll_type = GTK_SCROLL_NONE;
882 if (trough_part == GTK_TROUGH_START)
883 range->scroll_type = GTK_SCROLL_PAGE_BACKWARD;
884 else if (trough_part == GTK_TROUGH_END)
885 range->scroll_type = GTK_SCROLL_PAGE_FORWARD;
886 else if (trough_part == GTK_TROUGH_JUMP &&
887 jump_perc >= 0 && jump_perc <= 1)
888 range->scroll_type = GTK_SCROLL_JUMP;
890 if (range->scroll_type != GTK_SCROLL_NONE)
892 gtk_range_scroll (range, jump_perc);
893 gtk_range_add_timer (range);
896 else if (event->window == range->slider)
898 range->click_child = RANGE_CLASS (range)->slider;
899 range->scroll_type = GTK_SCROLL_NONE;
901 else if (event->window == range->step_forw)
903 range->click_child = RANGE_CLASS (range)->step_forw;
904 range->scroll_type = GTK_SCROLL_STEP_FORWARD;
906 gtk_range_scroll (range, -1);
907 gtk_range_add_timer (range);
908 gtk_range_draw_step_forw (range);
910 else if (event->window == range->step_back)
912 range->click_child = RANGE_CLASS (range)->step_back;
913 range->scroll_type = GTK_SCROLL_STEP_BACKWARD;
915 gtk_range_scroll (range, -1);
916 gtk_range_add_timer (range);
917 gtk_range_draw_step_back (range);
925 gtk_range_button_release (GtkWidget *widget,
926 GdkEventButton *event)
930 g_return_val_if_fail (widget != NULL, FALSE);
931 g_return_val_if_fail (GTK_IS_RANGE (widget), FALSE);
932 g_return_val_if_fail (event != NULL, FALSE);
934 range = GTK_RANGE (widget);
936 if (range->button == event->button)
938 gtk_grab_remove (widget);
941 range->x_click_point = -1;
942 range->y_click_point = -1;
944 if (range->click_child == RANGE_CLASS (range)->slider)
946 if (range->policy == GTK_UPDATE_DELAYED)
947 gtk_range_remove_timer (range);
949 if ((range->policy != GTK_UPDATE_CONTINUOUS) &&
950 (range->old_value != range->adjustment->value))
951 gtk_signal_emit_by_name (GTK_OBJECT (range->adjustment), "value_changed");
953 else if ((range->click_child == RANGE_CLASS (range)->trough) ||
954 (range->click_child == RANGE_CLASS (range)->step_forw) ||
955 (range->click_child == RANGE_CLASS (range)->step_back))
957 gtk_range_remove_timer (range);
959 if ((range->policy != GTK_UPDATE_CONTINUOUS) &&
960 (range->old_value != range->adjustment->value))
961 gtk_signal_emit_by_name (GTK_OBJECT (range->adjustment), "value_changed");
963 if (range->click_child == RANGE_CLASS (range)->step_forw)
965 range->click_child = 0;
966 gtk_range_draw_step_forw (range);
968 else if (range->click_child == RANGE_CLASS (range)->step_back)
970 range->click_child = 0;
971 gtk_range_draw_step_back (range);
975 range->click_child = 0;
982 gtk_range_motion_notify (GtkWidget *widget,
983 GdkEventMotion *event)
986 GdkModifierType mods;
989 g_return_val_if_fail (widget != NULL, FALSE);
990 g_return_val_if_fail (GTK_IS_RANGE (widget), FALSE);
991 g_return_val_if_fail (event != NULL, FALSE);
993 range = GTK_RANGE (widget);
995 if (range->click_child == RANGE_CLASS (range)->slider)
1000 if (event->is_hint || (event->window != range->slider))
1001 gdk_window_get_pointer (range->slider, &x, &y, &mods);
1003 mods = event->state;
1005 switch (range->button)
1008 mask = GDK_BUTTON1_MASK;
1011 mask = GDK_BUTTON2_MASK;
1014 mask = GDK_BUTTON3_MASK;
1023 if (RANGE_CLASS (range)->motion)
1024 (* RANGE_CLASS (range)->motion) (range, x - range->x_click_point, y - range->y_click_point);
1032 gtk_range_key_press (GtkWidget *widget,
1037 GtkScrollType scroll = GTK_SCROLL_NONE;
1038 GtkTroughType pos = GTK_TROUGH_NONE;
1040 g_return_val_if_fail (widget != NULL, FALSE);
1041 g_return_val_if_fail (GTK_IS_RANGE (widget), FALSE);
1042 g_return_val_if_fail (event != NULL, FALSE);
1044 range = GTK_RANGE (widget);
1047 if (RANGE_CLASS (range)->trough_keys)
1048 return_val = (* RANGE_CLASS (range)->trough_keys) (range, event, &scroll, &pos);
1052 if (scroll != GTK_SCROLL_NONE)
1054 range->scroll_type = scroll;
1055 gtk_range_scroll (range, -1);
1056 if (range->old_value != range->adjustment->value)
1058 gtk_signal_emit_by_name (GTK_OBJECT (range->adjustment), "value_changed");
1059 switch (range->scroll_type)
1061 case GTK_SCROLL_STEP_BACKWARD:
1062 gtk_range_draw_step_back (range);
1064 case GTK_SCROLL_STEP_FORWARD:
1065 gtk_range_draw_step_forw (range);
1070 if (pos != GTK_TROUGH_NONE)
1072 if (pos == GTK_TROUGH_START)
1073 range->adjustment->value = range->adjustment->lower;
1074 else if (pos == GTK_TROUGH_END)
1075 range->adjustment->value =
1076 range->adjustment->upper - range->adjustment->page_size;
1078 if (range->old_value != range->adjustment->value)
1080 gtk_signal_emit_by_name (GTK_OBJECT (range->adjustment),
1083 gtk_range_slider_update (range);
1084 gtk_range_clear_background (range);
1092 gtk_range_enter_notify (GtkWidget *widget,
1093 GdkEventCrossing *event)
1097 g_return_val_if_fail (widget != NULL, FALSE);
1098 g_return_val_if_fail (GTK_IS_RANGE (widget), FALSE);
1099 g_return_val_if_fail (event != NULL, FALSE);
1101 range = GTK_RANGE (widget);
1103 if (event->window == range->trough)
1105 range->in_child = RANGE_CLASS (range)->trough;
1107 else if (event->window == range->slider)
1109 range->in_child = RANGE_CLASS (range)->slider;
1111 if ((range->click_child == 0) ||
1112 (range->click_child == RANGE_CLASS (range)->trough))
1113 gtk_range_draw_slider (range);
1115 else if (event->window == range->step_forw)
1117 range->in_child = RANGE_CLASS (range)->step_forw;
1119 if ((range->click_child == 0) ||
1120 (range->click_child == RANGE_CLASS (range)->trough))
1121 gtk_range_draw_step_forw (range);
1123 else if (event->window == range->step_back)
1125 range->in_child = RANGE_CLASS (range)->step_back;
1127 if ((range->click_child == 0) ||
1128 (range->click_child == RANGE_CLASS (range)->trough))
1129 gtk_range_draw_step_back (range);
1136 gtk_range_leave_notify (GtkWidget *widget,
1137 GdkEventCrossing *event)
1141 g_return_val_if_fail (widget != NULL, FALSE);
1142 g_return_val_if_fail (GTK_IS_RANGE (widget), FALSE);
1143 g_return_val_if_fail (event != NULL, FALSE);
1145 range = GTK_RANGE (widget);
1147 range->in_child = 0;
1149 if (event->window == range->trough)
1152 else if (event->window == range->slider)
1154 if ((range->click_child == 0) ||
1155 (range->click_child == RANGE_CLASS (range)->trough))
1156 gtk_range_draw_slider (range);
1158 else if (event->window == range->step_forw)
1160 if ((range->click_child == 0) ||
1161 (range->click_child == RANGE_CLASS (range)->trough))
1162 gtk_range_draw_step_forw (range);
1164 else if (event->window == range->step_back)
1166 if ((range->click_child == 0) ||
1167 (range->click_child == RANGE_CLASS (range)->trough))
1168 gtk_range_draw_step_back (range);
1175 gtk_range_focus_in (GtkWidget *widget,
1176 GdkEventFocus *event)
1178 g_return_val_if_fail (widget != NULL, FALSE);
1179 g_return_val_if_fail (GTK_IS_RANGE (widget), FALSE);
1180 g_return_val_if_fail (event != NULL, FALSE);
1182 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
1183 gtk_widget_draw_focus (widget);
1189 gtk_range_focus_out (GtkWidget *widget,
1190 GdkEventFocus *event)
1192 g_return_val_if_fail (widget != NULL, FALSE);
1193 g_return_val_if_fail (GTK_IS_RANGE (widget), FALSE);
1194 g_return_val_if_fail (event != NULL, FALSE);
1196 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
1197 gtk_widget_draw_focus (widget);
1203 gtk_real_range_draw_trough (GtkRange *range)
1205 g_return_if_fail (range != NULL);
1206 g_return_if_fail (GTK_IS_RANGE (range));
1210 gtk_paint_box (GTK_WIDGET (range)->style, range->trough,
1211 GTK_STATE_ACTIVE, GTK_SHADOW_IN,
1212 NULL, GTK_WIDGET(range), "trough",
1214 if (GTK_WIDGET_HAS_FOCUS (range))
1215 gtk_paint_focus (GTK_WIDGET (range)->style,
1217 NULL, GTK_WIDGET(range), "trough",
1223 gtk_real_range_draw_slider (GtkRange *range)
1225 GtkStateType state_type;
1227 g_return_if_fail (range != NULL);
1228 g_return_if_fail (GTK_IS_RANGE (range));
1232 if ((range->in_child == RANGE_CLASS (range)->slider) ||
1233 (range->click_child == RANGE_CLASS (range)->slider))
1234 state_type = GTK_STATE_PRELIGHT;
1236 state_type = GTK_STATE_NORMAL;
1237 gtk_paint_box (GTK_WIDGET (range)->style, range->slider,
1238 state_type, GTK_SHADOW_OUT,
1239 NULL, GTK_WIDGET (range), "slider",
1245 gtk_real_range_timer (GtkRange *range)
1249 GDK_THREADS_ENTER ();
1252 if (range->click_child == RANGE_CLASS (range)->slider)
1254 if (range->policy == GTK_UPDATE_DELAYED)
1255 gtk_signal_emit_by_name (GTK_OBJECT (range->adjustment), "value_changed");
1260 GdkModifierType mods, mask;
1265 if (range->need_timer)
1266 range->timer = gtk_timeout_add (SCROLL_TIMER_LENGTH,
1267 (GtkFunction) RANGE_CLASS (range)->timer,
1271 GDK_THREADS_LEAVE ();
1274 range->need_timer = FALSE;
1277 switch (range->button)
1280 mask = GDK_BUTTON1_MASK;
1283 mask = GDK_BUTTON2_MASK;
1286 mask = GDK_BUTTON3_MASK;
1293 gdk_window_get_pointer (range->slider, NULL, NULL, &mods);
1296 return_val = gtk_range_scroll (range, -1);
1299 GDK_THREADS_LEAVE ();
1305 gtk_range_scroll (GtkRange *range,
1311 g_return_val_if_fail (range != NULL, FALSE);
1312 g_return_val_if_fail (GTK_IS_RANGE (range), FALSE);
1314 new_value = range->adjustment->value;
1317 switch (range->scroll_type)
1319 case GTK_SCROLL_NONE:
1322 case GTK_SCROLL_JUMP:
1323 if (jump_perc >= 0 && jump_perc <= 1)
1325 new_value = (range->adjustment->lower +
1326 (range->adjustment->upper - range->adjustment->page_size -
1327 range->adjustment->lower) * jump_perc);
1331 case GTK_SCROLL_STEP_BACKWARD:
1332 new_value -= range->adjustment->step_increment;
1333 if (new_value <= range->adjustment->lower)
1335 new_value = range->adjustment->lower;
1341 case GTK_SCROLL_STEP_FORWARD:
1342 new_value += range->adjustment->step_increment;
1343 if (new_value >= (range->adjustment->upper - range->adjustment->page_size))
1345 new_value = range->adjustment->upper - range->adjustment->page_size;
1351 case GTK_SCROLL_PAGE_BACKWARD:
1352 new_value -= range->adjustment->page_increment;
1353 if (new_value <= range->adjustment->lower)
1355 new_value = range->adjustment->lower;
1361 case GTK_SCROLL_PAGE_FORWARD:
1362 new_value += range->adjustment->page_increment;
1363 if (new_value >= (range->adjustment->upper - range->adjustment->page_size))
1365 new_value = range->adjustment->upper - range->adjustment->page_size;
1372 if (new_value != range->adjustment->value)
1374 range->adjustment->value = new_value;
1376 if ((range->policy == GTK_UPDATE_CONTINUOUS) ||
1377 (!return_val && (range->policy == GTK_UPDATE_DELAYED)))
1379 gtk_signal_emit_by_name (GTK_OBJECT (range->adjustment), "value_changed");
1383 gtk_range_slider_update (range);
1384 gtk_range_clear_background (range);
1393 gtk_range_add_timer (GtkRange *range)
1395 g_return_if_fail (range != NULL);
1396 g_return_if_fail (GTK_IS_RANGE (range));
1400 range->need_timer = TRUE;
1401 range->timer = gtk_timeout_add (SCROLL_INITIAL_DELAY,
1402 (GtkFunction) RANGE_CLASS (range)->timer,
1408 gtk_range_remove_timer (GtkRange *range)
1410 g_return_if_fail (range != NULL);
1411 g_return_if_fail (GTK_IS_RANGE (range));
1415 gtk_timeout_remove (range->timer);
1418 range->need_timer = FALSE;
1422 gtk_range_adjustment_changed (GtkAdjustment *adjustment,
1427 g_return_if_fail (adjustment != NULL);
1428 g_return_if_fail (data != NULL);
1430 range = GTK_RANGE (data);
1432 if (((range->old_lower != adjustment->lower) ||
1433 (range->old_upper != adjustment->upper) ||
1434 (range->old_page_size != adjustment->page_size)) &&
1435 (range->old_value == adjustment->value))
1437 if ((adjustment->lower == adjustment->upper) ||
1438 (range->old_lower == (range->old_upper - range->old_page_size)))
1440 adjustment->value = adjustment->lower;
1441 gtk_signal_emit_by_name (GTK_OBJECT (adjustment), "value_changed");
1445 if ((range->old_value != adjustment->value) ||
1446 (range->old_lower != adjustment->lower) ||
1447 (range->old_upper != adjustment->upper) ||
1448 (range->old_page_size != adjustment->page_size))
1450 gtk_range_slider_update (range);
1451 gtk_range_clear_background (range);
1453 range->old_value = adjustment->value;
1454 range->old_lower = adjustment->lower;
1455 range->old_upper = adjustment->upper;
1456 range->old_page_size = adjustment->page_size;
1461 gtk_range_adjustment_value_changed (GtkAdjustment *adjustment,
1466 g_return_if_fail (adjustment != NULL);
1467 g_return_if_fail (data != NULL);
1469 range = GTK_RANGE (data);
1471 if (range->old_value != adjustment->value)
1473 gtk_range_slider_update (range);
1474 gtk_range_clear_background (range);
1476 range->old_value = adjustment->value;
1482 gtk_range_trough_hdims (GtkRange *range,
1492 g_return_if_fail (range != NULL);
1494 gdk_window_get_size (range->trough, &trough_width, NULL);
1495 gdk_window_get_size (range->slider, &slider_length, NULL);
1497 tleft = GTK_WIDGET (range)->style->klass->xthickness;
1498 tright = trough_width - slider_length - GTK_WIDGET (range)->style->klass->xthickness;
1500 if (range->step_back)
1502 gdk_window_get_size (range->step_back, &tmp_width, NULL);
1503 tleft += (tmp_width + RANGE_CLASS (range)->stepper_slider_spacing);
1506 if (range->step_forw)
1508 gdk_window_get_size (range->step_forw, &tmp_width, NULL);
1509 tright -= (tmp_width + RANGE_CLASS (range)->stepper_slider_spacing);
1519 gtk_range_trough_vdims (GtkRange *range,
1529 g_return_if_fail (range != NULL);
1531 gdk_window_get_size (range->trough, NULL, &trough_height);
1532 gdk_window_get_size (range->slider, NULL, &slider_length);
1534 ttop = GTK_WIDGET (range)->style->klass->ythickness;
1535 tbottom = trough_height - slider_length - GTK_WIDGET (range)->style->klass->ythickness;
1537 if (range->step_back)
1539 gdk_window_get_size (range->step_back, NULL, &tmp_height);
1540 ttop += (tmp_height + RANGE_CLASS (range)->stepper_slider_spacing);
1543 if (range->step_forw)
1545 gdk_window_get_size (range->step_forw, NULL, &tmp_height);
1546 tbottom -= (tmp_height + RANGE_CLASS (range)->stepper_slider_spacing);
1556 gtk_range_style_set (GtkWidget *widget,
1557 GtkStyle *previous_style)
1561 g_return_if_fail (widget != NULL);
1562 g_return_if_fail (GTK_IS_RANGE (widget));
1564 range = GTK_RANGE (widget);
1566 if (GTK_WIDGET_REALIZED (widget))
1569 gtk_style_set_background (widget->style, range->trough, GTK_STATE_ACTIVE);
1572 gtk_style_set_background (widget->style, range->slider, GTK_STATE_NORMAL);
1574 /* The backgrounds of the step_forw and step_back never actually
1575 * get drawn in draw calls, so we call gdk_window_clear() here
1576 * so they get the correct colors. This is a hack. OWT.
1579 if (range->step_forw)
1581 gtk_style_set_background (widget->style, range->step_forw, GTK_STATE_ACTIVE);
1582 gdk_window_clear (range->step_forw);
1585 if (range->step_back)
1587 gtk_style_set_background (widget->style, range->step_back, GTK_STATE_ACTIVE);
1588 gdk_window_clear (range->step_back);