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"
32 #define SCROLL_TIMER_LENGTH 20
33 #define SCROLL_INITIAL_DELAY 100
34 #define SCROLL_DELAY_LENGTH 300
36 #define RANGE_CLASS(w) GTK_RANGE_GET_CLASS (w)
43 static void gtk_range_class_init (GtkRangeClass *klass);
44 static void gtk_range_init (GtkRange *range);
45 static void gtk_range_set_arg (GtkObject *object,
48 static void gtk_range_get_arg (GtkObject *object,
51 static void gtk_range_destroy (GtkObject *object);
52 static void gtk_range_draw (GtkWidget *widget,
54 static void gtk_range_draw_focus (GtkWidget *widget);
55 static void gtk_range_unrealize (GtkWidget *widget);
56 static gint gtk_range_expose (GtkWidget *widget,
57 GdkEventExpose *event);
58 static gint gtk_range_button_press (GtkWidget *widget,
59 GdkEventButton *event);
60 static gint gtk_range_button_release (GtkWidget *widget,
61 GdkEventButton *event);
62 static gint gtk_range_motion_notify (GtkWidget *widget,
63 GdkEventMotion *event);
64 static gint gtk_range_key_press (GtkWidget *widget,
66 static gint gtk_range_enter_notify (GtkWidget *widget,
67 GdkEventCrossing *event);
68 static gint gtk_range_leave_notify (GtkWidget *widget,
69 GdkEventCrossing *event);
70 static gint gtk_range_focus_in (GtkWidget *widget,
71 GdkEventFocus *event);
72 static gint gtk_range_focus_out (GtkWidget *widget,
73 GdkEventFocus *event);
74 static gint gtk_range_scroll_event (GtkWidget *widget,
75 GdkEventScroll *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 object_class->set_arg = gtk_range_set_arg;
140 object_class->get_arg = gtk_range_get_arg;
141 object_class->destroy = gtk_range_destroy;
143 widget_class->draw = gtk_range_draw;
144 widget_class->draw_focus = gtk_range_draw_focus;
145 widget_class->unrealize = gtk_range_unrealize;
146 widget_class->expose_event = gtk_range_expose;
147 widget_class->button_press_event = gtk_range_button_press;
148 widget_class->button_release_event = gtk_range_button_release;
149 widget_class->motion_notify_event = gtk_range_motion_notify;
150 widget_class->scroll_event = gtk_range_scroll_event;
151 widget_class->key_press_event = gtk_range_key_press;
152 widget_class->enter_notify_event = gtk_range_enter_notify;
153 widget_class->leave_notify_event = gtk_range_leave_notify;
154 widget_class->focus_in_event = gtk_range_focus_in;
155 widget_class->focus_out_event = gtk_range_focus_out;
156 widget_class->style_set = gtk_range_style_set;
158 class->slider_width = 11;
159 class->stepper_size = 11;
160 class->stepper_slider_spacing = 1;
161 class->min_slider_size = 7;
164 class->step_forw = 3;
165 class->step_back = 4;
166 class->draw_background = NULL;
167 class->clear_background = NULL;
168 class->draw_trough = gtk_real_range_draw_trough;
169 class->draw_slider = gtk_real_range_draw_slider;
170 class->draw_step_forw = NULL;
171 class->draw_step_back = NULL;
172 class->trough_click = NULL;
173 class->trough_keys = NULL;
174 class->motion = NULL;
175 class->timer = gtk_real_range_timer;
177 gtk_object_add_arg_type ("GtkRange::update_policy",
178 GTK_TYPE_UPDATE_TYPE,
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 if (!range->adjustment)
254 gtk_range_set_adjustment (range, NULL);
256 return range->adjustment;
260 gtk_range_set_update_policy (GtkRange *range,
261 GtkUpdateType policy)
263 g_return_if_fail (range != NULL);
264 g_return_if_fail (GTK_IS_RANGE (range));
266 range->policy = policy;
270 gtk_range_set_adjustment (GtkRange *range,
271 GtkAdjustment *adjustment)
273 g_return_if_fail (range != NULL);
274 g_return_if_fail (GTK_IS_RANGE (range));
277 adjustment = (GtkAdjustment*) gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
279 g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
281 if (range->adjustment != adjustment)
283 if (range->adjustment)
285 gtk_signal_disconnect_by_data (GTK_OBJECT (range->adjustment),
287 gtk_object_unref (GTK_OBJECT (range->adjustment));
290 range->adjustment = adjustment;
291 gtk_object_ref (GTK_OBJECT (adjustment));
292 gtk_object_sink (GTK_OBJECT (adjustment));
294 gtk_signal_connect (GTK_OBJECT (adjustment), "changed",
295 (GtkSignalFunc) gtk_range_adjustment_changed,
297 gtk_signal_connect (GTK_OBJECT (adjustment), "value_changed",
298 (GtkSignalFunc) gtk_range_adjustment_value_changed,
301 range->old_value = adjustment->value;
302 range->old_lower = adjustment->lower;
303 range->old_upper = adjustment->upper;
304 range->old_page_size = adjustment->page_size;
306 gtk_range_adjustment_changed (adjustment, (gpointer) range);
311 gtk_range_draw_background (GtkRange *range)
313 g_return_if_fail (range != NULL);
314 g_return_if_fail (GTK_IS_RANGE (range));
316 if (range->trough && RANGE_CLASS (range)->draw_background)
317 (* RANGE_CLASS (range)->draw_background) (range);
321 gtk_range_clear_background (GtkRange *range)
323 g_return_if_fail (range != NULL);
324 g_return_if_fail (GTK_IS_RANGE (range));
326 if (range->trough && RANGE_CLASS (range)->clear_background)
327 (* RANGE_CLASS (range)->clear_background) (range);
331 gtk_range_draw_trough (GtkRange *range)
333 g_return_if_fail (range != NULL);
334 g_return_if_fail (GTK_IS_RANGE (range));
336 if (range->trough && RANGE_CLASS (range)->draw_trough)
337 (* RANGE_CLASS (range)->draw_trough) (range);
341 gtk_range_draw_slider (GtkRange *range)
343 g_return_if_fail (range != NULL);
344 g_return_if_fail (GTK_IS_RANGE (range));
346 if (range->slider && RANGE_CLASS (range)->draw_slider)
347 (* RANGE_CLASS (range)->draw_slider) (range);
351 gtk_range_draw_step_forw (GtkRange *range)
353 g_return_if_fail (range != NULL);
354 g_return_if_fail (GTK_IS_RANGE (range));
356 if (range->step_forw && RANGE_CLASS (range)->draw_step_forw)
357 (* RANGE_CLASS (range)->draw_step_forw) (range);
361 gtk_range_draw_step_back (GtkRange *range)
363 g_return_if_fail (range != NULL);
364 g_return_if_fail (GTK_IS_RANGE (range));
366 if (range->step_back && RANGE_CLASS (range)->draw_step_back)
367 (* RANGE_CLASS (range)->draw_step_back) (range);
371 gtk_range_slider_update (GtkRange *range)
373 g_return_if_fail (range != NULL);
374 g_return_if_fail (GTK_IS_RANGE (range));
376 if (RANGE_CLASS (range)->slider_update)
377 (* RANGE_CLASS (range)->slider_update) (range);
381 gtk_range_trough_click (GtkRange *range,
386 g_return_val_if_fail (range != NULL, GTK_TROUGH_NONE);
387 g_return_val_if_fail (GTK_IS_RANGE (range), GTK_TROUGH_NONE);
389 if (RANGE_CLASS (range)->trough_click)
390 return (* RANGE_CLASS (range)->trough_click) (range, x, y, jump_perc);
392 return GTK_TROUGH_NONE;
396 gtk_range_default_hslider_update (GtkRange *range)
402 g_return_if_fail (range != NULL);
403 g_return_if_fail (GTK_IS_RANGE (range));
405 if (GTK_WIDGET_REALIZED (range))
407 gtk_range_trough_hdims (range, &left, &right);
410 if (range->adjustment->value < range->adjustment->lower)
412 range->adjustment->value = range->adjustment->lower;
413 gtk_signal_emit_by_name (GTK_OBJECT (range->adjustment), "value_changed");
415 else if (range->adjustment->value > range->adjustment->upper)
417 range->adjustment->value = range->adjustment->upper;
418 gtk_signal_emit_by_name (GTK_OBJECT (range->adjustment), "value_changed");
421 if (range->adjustment->lower != (range->adjustment->upper - range->adjustment->page_size))
422 x += ((right - left) * (range->adjustment->value - range->adjustment->lower) /
423 (range->adjustment->upper - range->adjustment->lower - range->adjustment->page_size));
430 gdk_window_move (range->slider, x, GTK_WIDGET (range)->style->ythickness);
435 gtk_range_default_vslider_update (GtkRange *range)
441 g_return_if_fail (range != NULL);
442 g_return_if_fail (GTK_IS_RANGE (range));
444 if (GTK_WIDGET_REALIZED (range))
446 gtk_range_trough_vdims (range, &top, &bottom);
449 if (range->adjustment->value < range->adjustment->lower)
451 range->adjustment->value = range->adjustment->lower;
452 gtk_signal_emit_by_name (GTK_OBJECT (range->adjustment), "value_changed");
454 else if (range->adjustment->value > range->adjustment->upper)
456 range->adjustment->value = range->adjustment->upper;
457 gtk_signal_emit_by_name (GTK_OBJECT (range->adjustment), "value_changed");
460 if (range->adjustment->lower != (range->adjustment->upper - range->adjustment->page_size))
461 y += ((bottom - top) * (range->adjustment->value - range->adjustment->lower) /
462 (range->adjustment->upper - range->adjustment->lower - range->adjustment->page_size));
469 gdk_window_move (range->slider, GTK_WIDGET (range)->style->xthickness, y);
474 gtk_range_default_htrough_click (GtkRange *range,
486 g_return_val_if_fail (range != NULL, GTK_TROUGH_NONE);
487 g_return_val_if_fail (GTK_IS_RANGE (range), GTK_TROUGH_NONE);
489 ythickness = GTK_WIDGET (range)->style->ythickness;
491 gtk_range_trough_hdims (range, &left, &right);
492 gdk_window_get_size (range->slider, &slider_length, NULL);
493 right += slider_length;
495 if ((x > left) && (y > ythickness))
497 gdk_window_get_size (range->trough, &trough_width, &trough_height);
499 if ((x < right) && (y < (trough_height - ythickness)))
503 *jump_perc = ((gdouble) (x - left)) / ((gdouble) (right - left));
504 return GTK_TROUGH_JUMP;
507 gdk_window_get_position (range->slider, &slider_x, NULL);
510 return GTK_TROUGH_START;
512 return GTK_TROUGH_END;
516 return GTK_TROUGH_NONE;
520 gtk_range_default_vtrough_click (GtkRange *range,
532 g_return_val_if_fail (range != NULL, GTK_TROUGH_NONE);
533 g_return_val_if_fail (GTK_IS_RANGE (range), GTK_TROUGH_NONE);
535 xthickness = GTK_WIDGET (range)->style->xthickness;
537 gtk_range_trough_vdims (range, &top, &bottom);
538 gdk_window_get_size (range->slider, NULL, &slider_length);
539 bottom += slider_length;
541 if ((x > xthickness) && (y > top))
543 gdk_window_get_size (range->trough, &trough_width, &trough_height);
545 if ((x < (trough_width - xthickness) && (y < bottom)))
549 *jump_perc = ((gdouble) (y - top)) / ((gdouble) (bottom - top));
551 return GTK_TROUGH_JUMP;
554 gdk_window_get_position (range->slider, NULL, &slider_y);
557 return GTK_TROUGH_START;
559 return GTK_TROUGH_END;
563 return GTK_TROUGH_NONE;
567 gtk_range_default_hmotion (GtkRange *range,
573 gint slider_x, slider_y;
576 g_return_if_fail (GTK_IS_RANGE (range));
577 g_return_if_fail (GTK_WIDGET_REALIZED (range));
579 range = GTK_RANGE (range);
581 gdk_window_get_position (range->slider, &slider_x, &slider_y);
582 gtk_range_trough_hdims (range, &left, &right);
587 new_pos = slider_x + xdelta;
591 else if (new_pos > right)
594 old_value = range->adjustment->value;
595 range->adjustment->value = ((range->adjustment->upper -
596 range->adjustment->lower -
597 range->adjustment->page_size) *
598 (new_pos - left) / (right - left) +
599 range->adjustment->lower);
601 if (range->digits >= 0)
605 sprintf (buffer, "%0.*f", range->digits, range->adjustment->value);
606 sscanf (buffer, "%f", &range->adjustment->value);
609 if (old_value != range->adjustment->value)
611 if (range->policy == GTK_UPDATE_CONTINUOUS)
613 gtk_signal_emit_by_name (GTK_OBJECT (range->adjustment), "value_changed");
617 gtk_range_slider_update (range);
618 gtk_range_clear_background (range);
620 if (range->policy == GTK_UPDATE_DELAYED)
622 gtk_range_remove_timer (range);
623 range->timer = gtk_timeout_add (SCROLL_DELAY_LENGTH,
624 (GtkFunction) RANGE_CLASS (range)->timer,
632 gtk_range_default_vmotion (GtkRange *range,
638 gint slider_x, slider_y;
641 g_return_if_fail (GTK_IS_RANGE (range));
642 g_return_if_fail (GTK_WIDGET_REALIZED (range));
644 range = GTK_RANGE (range);
646 gdk_window_get_position (range->slider, &slider_x, &slider_y);
647 gtk_range_trough_vdims (range, &top, &bottom);
652 new_pos = slider_y + ydelta;
656 else if (new_pos > bottom)
659 old_value = range->adjustment->value;
660 range->adjustment->value = ((range->adjustment->upper -
661 range->adjustment->lower -
662 range->adjustment->page_size) *
663 (new_pos - top) / (bottom - top) +
664 range->adjustment->lower);
666 if (range->digits >= 0)
670 sprintf (buffer, "%0.*f", range->digits, range->adjustment->value);
671 sscanf (buffer, "%f", &range->adjustment->value);
674 if (old_value != range->adjustment->value)
676 if (range->policy == GTK_UPDATE_CONTINUOUS)
678 gtk_signal_emit_by_name (GTK_OBJECT (range->adjustment), "value_changed");
682 gtk_range_slider_update (range);
683 gtk_range_clear_background (range);
685 if (range->policy == GTK_UPDATE_DELAYED)
687 gtk_range_remove_timer (range);
688 range->timer = gtk_timeout_add (SCROLL_DELAY_LENGTH,
689 (GtkFunction) RANGE_CLASS (range)->timer,
698 gtk_range_destroy (GtkObject *object)
702 g_return_if_fail (object != NULL);
703 g_return_if_fail (GTK_IS_RANGE (object));
705 range = GTK_RANGE (object);
707 gtk_range_remove_timer (range);
708 if (range->adjustment)
710 if (range->adjustment)
711 gtk_signal_disconnect_by_data (GTK_OBJECT (range->adjustment),
713 gtk_object_unref (GTK_OBJECT (range->adjustment));
714 range->adjustment = NULL;
717 (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
721 gtk_range_draw (GtkWidget *widget,
726 g_return_if_fail (widget != NULL);
727 g_return_if_fail (GTK_IS_RANGE (widget));
728 g_return_if_fail (area != NULL);
730 if (GTK_WIDGET_DRAWABLE (widget))
732 range = GTK_RANGE (widget);
734 gtk_range_draw_background (range);
735 gtk_range_draw_trough (range);
736 gtk_range_draw_slider (range);
737 gtk_range_draw_step_forw (range);
738 gtk_range_draw_step_back (range);
743 gtk_range_draw_focus (GtkWidget *widget)
745 g_return_if_fail (widget != NULL);
746 g_return_if_fail (GTK_IS_RANGE (widget));
748 if (GTK_WIDGET_DRAWABLE (widget))
749 gtk_range_draw_trough (GTK_RANGE (widget));
753 gtk_range_unrealize (GtkWidget *widget)
757 g_return_if_fail (widget != NULL);
758 g_return_if_fail (GTK_IS_RANGE (widget));
760 range = GTK_RANGE (widget);
764 gdk_window_set_user_data (range->slider, NULL);
765 gdk_window_destroy (range->slider);
766 range->slider = NULL;
770 gdk_window_set_user_data (range->trough, NULL);
771 gdk_window_destroy (range->trough);
772 range->trough = NULL;
774 if (range->step_forw)
776 gdk_window_set_user_data (range->step_forw, NULL);
777 gdk_window_destroy (range->step_forw);
778 range->step_forw = NULL;
780 if (range->step_back)
782 gdk_window_set_user_data (range->step_back, NULL);
783 gdk_window_destroy (range->step_back);
784 range->step_back = NULL;
787 if (GTK_WIDGET_CLASS (parent_class)->unrealize)
788 (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
792 gtk_range_expose (GtkWidget *widget,
793 GdkEventExpose *event)
797 g_return_val_if_fail (widget != NULL, FALSE);
798 g_return_val_if_fail (GTK_IS_RANGE (widget), FALSE);
799 g_return_val_if_fail (event != NULL, FALSE);
801 range = GTK_RANGE (widget);
803 /* We should really pass another argument -
804 *the redrawn area - to all the drawing functions)
806 if (event->window == range->trough)
808 gtk_range_draw_trough (range);
810 else if (event->window == widget->window)
812 gtk_range_draw_background (range);
814 else if (event->window == range->slider)
816 gtk_range_draw_slider (range);
818 else if (event->window == range->step_forw)
820 gtk_range_draw_step_forw (range);
822 else if (event->window == range->step_back)
824 gtk_range_draw_step_back (range);
830 gtk_range_button_press (GtkWidget *widget,
831 GdkEventButton *event)
837 g_return_val_if_fail (GTK_IS_RANGE (widget), FALSE);
838 g_return_val_if_fail (event != NULL, FALSE);
840 if (!GTK_WIDGET_HAS_FOCUS (widget))
841 gtk_widget_grab_focus (widget);
844 range = GTK_RANGE (widget);
845 if (range->button == 0)
847 gtk_grab_add (widget);
849 range->button = event->button;
850 range->x_click_point = event->x;
851 range->y_click_point = event->y;
853 if (event->window == range->trough)
855 range->click_child = RANGE_CLASS (range)->trough;
857 if (range->button == 2)
858 trough_part = gtk_range_trough_click (range, event->x, event->y, &jump_perc);
860 trough_part = gtk_range_trough_click (range, event->x, event->y, NULL);
862 range->scroll_type = GTK_SCROLL_NONE;
863 if (trough_part == GTK_TROUGH_START)
864 range->scroll_type = GTK_SCROLL_PAGE_BACKWARD;
865 else if (trough_part == GTK_TROUGH_END)
866 range->scroll_type = GTK_SCROLL_PAGE_FORWARD;
867 else if (trough_part == GTK_TROUGH_JUMP &&
868 jump_perc >= 0 && jump_perc <= 1)
869 range->scroll_type = GTK_SCROLL_JUMP;
871 if (range->scroll_type != GTK_SCROLL_NONE)
873 gtk_range_scroll (range, jump_perc);
874 gtk_range_add_timer (range);
877 else if (event->window == range->slider)
879 range->click_child = RANGE_CLASS (range)->slider;
880 range->scroll_type = GTK_SCROLL_NONE;
882 else if (event->window == range->step_forw)
884 range->click_child = RANGE_CLASS (range)->step_forw;
885 range->scroll_type = GTK_SCROLL_STEP_FORWARD;
887 gtk_range_scroll (range, -1);
888 gtk_range_add_timer (range);
889 gtk_range_draw_step_forw (range);
891 else if (event->window == range->step_back)
893 range->click_child = RANGE_CLASS (range)->step_back;
894 range->scroll_type = GTK_SCROLL_STEP_BACKWARD;
896 gtk_range_scroll (range, -1);
897 gtk_range_add_timer (range);
898 gtk_range_draw_step_back (range);
906 gtk_range_button_release (GtkWidget *widget,
907 GdkEventButton *event)
911 g_return_val_if_fail (GTK_IS_RANGE (widget), FALSE);
912 g_return_val_if_fail (event != NULL, FALSE);
914 range = GTK_RANGE (widget);
916 if (range->button == event->button)
918 gtk_grab_remove (widget);
921 range->x_click_point = -1;
922 range->y_click_point = -1;
924 if (range->click_child == RANGE_CLASS (range)->slider)
926 if (range->policy == GTK_UPDATE_DELAYED)
927 gtk_range_remove_timer (range);
929 if ((range->policy != GTK_UPDATE_CONTINUOUS) &&
930 (range->old_value != range->adjustment->value))
931 gtk_signal_emit_by_name (GTK_OBJECT (range->adjustment), "value_changed");
933 else if ((range->click_child == RANGE_CLASS (range)->trough) ||
934 (range->click_child == RANGE_CLASS (range)->step_forw) ||
935 (range->click_child == RANGE_CLASS (range)->step_back))
937 gtk_range_remove_timer (range);
939 if ((range->policy != GTK_UPDATE_CONTINUOUS) &&
940 (range->old_value != range->adjustment->value))
941 gtk_signal_emit_by_name (GTK_OBJECT (range->adjustment), "value_changed");
943 if (range->click_child == RANGE_CLASS (range)->step_forw)
945 range->click_child = 0;
946 gtk_range_draw_step_forw (range);
948 else if (range->click_child == RANGE_CLASS (range)->step_back)
950 range->click_child = 0;
951 gtk_range_draw_step_back (range);
955 range->click_child = 0;
962 gtk_range_scroll_event (GtkWidget *widget,
963 GdkEventScroll *event)
967 g_return_val_if_fail (GTK_IS_RANGE (widget), FALSE);
968 g_return_val_if_fail (event != NULL, FALSE);
970 range = GTK_RANGE (widget);
972 if (GTK_WIDGET_REALIZED (range))
974 GtkAdjustment *adj = GTK_RANGE (range)->adjustment;
975 gfloat new_value = adj->value + ((event->direction == GDK_SCROLL_UP) ?
976 -adj->page_increment / 2:
977 adj->page_increment / 2);
978 new_value = CLAMP (new_value, adj->lower, adj->upper - adj->page_size);
979 gtk_adjustment_set_value (adj, new_value);
986 gtk_range_motion_notify (GtkWidget *widget,
987 GdkEventMotion *event)
991 g_return_val_if_fail (GTK_IS_RANGE (widget), FALSE);
992 g_return_val_if_fail (event != NULL, FALSE);
994 range = GTK_RANGE (widget);
996 if (range->click_child == RANGE_CLASS (range)->slider)
998 GdkModifierType mods;
999 gint x, y, mask, x2, y2;
1001 gdk_window_get_pointer (range->trough, &x, &y, &mods);
1002 gdk_window_get_position (range->slider, &x2, &y2);
1007 switch (range->button)
1010 mask = GDK_BUTTON1_MASK;
1013 mask = GDK_BUTTON2_MASK;
1016 mask = GDK_BUTTON3_MASK;
1025 if (RANGE_CLASS (range)->motion)
1026 (* RANGE_CLASS (range)->motion) (range, x - range->x_click_point, y - range->y_click_point);
1034 gtk_range_key_press (GtkWidget *widget,
1039 GtkScrollType scroll = GTK_SCROLL_NONE;
1040 GtkTroughType pos = GTK_TROUGH_NONE;
1042 g_return_val_if_fail (GTK_IS_RANGE (widget), FALSE);
1043 g_return_val_if_fail (event != NULL, FALSE);
1045 range = GTK_RANGE (widget);
1048 if (RANGE_CLASS (range)->trough_keys)
1049 return_val = (* RANGE_CLASS (range)->trough_keys) (range, event, &scroll, &pos);
1053 if (scroll != GTK_SCROLL_NONE)
1055 range->scroll_type = scroll;
1056 gtk_range_scroll (range, -1);
1057 if (range->old_value != range->adjustment->value)
1059 gtk_signal_emit_by_name (GTK_OBJECT (range->adjustment), "value_changed");
1060 switch (range->scroll_type)
1062 case GTK_SCROLL_STEP_BACKWARD:
1063 gtk_range_draw_step_back (range);
1065 case GTK_SCROLL_STEP_FORWARD:
1066 gtk_range_draw_step_forw (range);
1071 if (pos != GTK_TROUGH_NONE)
1073 if (pos == GTK_TROUGH_START)
1074 range->adjustment->value = range->adjustment->lower;
1075 else if (pos == GTK_TROUGH_END)
1076 range->adjustment->value =
1077 range->adjustment->upper - range->adjustment->page_size;
1079 if (range->old_value != range->adjustment->value)
1081 gtk_signal_emit_by_name (GTK_OBJECT (range->adjustment),
1084 gtk_range_slider_update (range);
1085 gtk_range_clear_background (range);
1093 gtk_range_enter_notify (GtkWidget *widget,
1094 GdkEventCrossing *event)
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 (GTK_IS_RANGE (widget), FALSE);
1142 g_return_val_if_fail (event != NULL, FALSE);
1144 range = GTK_RANGE (widget);
1146 range->in_child = 0;
1148 if (event->window == range->trough)
1151 else if (event->window == range->slider)
1153 if ((range->click_child == 0) ||
1154 (range->click_child == RANGE_CLASS (range)->trough))
1155 gtk_range_draw_slider (range);
1157 else if (event->window == range->step_forw)
1159 if ((range->click_child == 0) ||
1160 (range->click_child == RANGE_CLASS (range)->trough))
1161 gtk_range_draw_step_forw (range);
1163 else if (event->window == range->step_back)
1165 if ((range->click_child == 0) ||
1166 (range->click_child == RANGE_CLASS (range)->trough))
1167 gtk_range_draw_step_back (range);
1174 gtk_range_focus_in (GtkWidget *widget,
1175 GdkEventFocus *event)
1177 g_return_val_if_fail (GTK_IS_RANGE (widget), FALSE);
1178 g_return_val_if_fail (event != NULL, FALSE);
1180 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
1181 gtk_widget_draw_focus (widget);
1187 gtk_range_focus_out (GtkWidget *widget,
1188 GdkEventFocus *event)
1190 g_return_val_if_fail (GTK_IS_RANGE (widget), FALSE);
1191 g_return_val_if_fail (event != NULL, FALSE);
1193 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
1194 gtk_widget_draw_focus (widget);
1200 gtk_real_range_draw_trough (GtkRange *range)
1202 g_return_if_fail (GTK_IS_RANGE (range));
1206 gtk_paint_box (GTK_WIDGET (range)->style, range->trough,
1207 GTK_STATE_ACTIVE, GTK_SHADOW_IN,
1208 NULL, GTK_WIDGET(range), "trough",
1210 if (GTK_WIDGET_HAS_FOCUS (range))
1211 gtk_paint_focus (GTK_WIDGET (range)->style,
1213 NULL, GTK_WIDGET(range), "trough",
1219 gtk_real_range_draw_slider (GtkRange *range)
1221 GtkStateType state_type;
1223 g_return_if_fail (GTK_IS_RANGE (range));
1227 if ((range->in_child == RANGE_CLASS (range)->slider) ||
1228 (range->click_child == RANGE_CLASS (range)->slider))
1229 state_type = GTK_STATE_PRELIGHT;
1231 state_type = GTK_STATE_NORMAL;
1232 gtk_paint_box (GTK_WIDGET (range)->style, range->slider,
1233 state_type, GTK_SHADOW_OUT,
1234 NULL, GTK_WIDGET (range), "slider",
1240 gtk_real_range_timer (GtkRange *range)
1244 GDK_THREADS_ENTER ();
1247 if (range->click_child == RANGE_CLASS (range)->slider)
1249 if (range->policy == GTK_UPDATE_DELAYED)
1250 gtk_signal_emit_by_name (GTK_OBJECT (range->adjustment), "value_changed");
1255 GdkModifierType mods, mask;
1260 if (range->need_timer)
1261 range->timer = gtk_timeout_add (SCROLL_TIMER_LENGTH,
1262 (GtkFunction) RANGE_CLASS (range)->timer,
1266 GDK_THREADS_LEAVE ();
1269 range->need_timer = FALSE;
1272 switch (range->button)
1275 mask = GDK_BUTTON1_MASK;
1278 mask = GDK_BUTTON2_MASK;
1281 mask = GDK_BUTTON3_MASK;
1288 gdk_window_get_pointer (range->slider, NULL, NULL, &mods);
1291 return_val = gtk_range_scroll (range, -1);
1294 GDK_THREADS_LEAVE ();
1300 gtk_range_scroll (GtkRange *range,
1306 g_return_val_if_fail (GTK_IS_RANGE (range), FALSE);
1308 new_value = range->adjustment->value;
1311 switch (range->scroll_type)
1313 case GTK_SCROLL_NONE:
1316 case GTK_SCROLL_JUMP:
1317 if (jump_perc >= 0 && jump_perc <= 1)
1319 new_value = (range->adjustment->lower +
1320 (range->adjustment->upper - range->adjustment->page_size -
1321 range->adjustment->lower) * jump_perc);
1325 case GTK_SCROLL_STEP_BACKWARD:
1326 new_value -= range->adjustment->step_increment;
1327 if (new_value <= range->adjustment->lower)
1329 new_value = range->adjustment->lower;
1335 case GTK_SCROLL_STEP_FORWARD:
1336 new_value += range->adjustment->step_increment;
1337 if (new_value >= (range->adjustment->upper - range->adjustment->page_size))
1339 new_value = range->adjustment->upper - range->adjustment->page_size;
1345 case GTK_SCROLL_PAGE_BACKWARD:
1346 new_value -= range->adjustment->page_increment;
1347 if (new_value <= range->adjustment->lower)
1349 new_value = range->adjustment->lower;
1355 case GTK_SCROLL_PAGE_FORWARD:
1356 new_value += range->adjustment->page_increment;
1357 if (new_value >= (range->adjustment->upper - range->adjustment->page_size))
1359 new_value = range->adjustment->upper - range->adjustment->page_size;
1366 if (new_value != range->adjustment->value)
1368 range->adjustment->value = new_value;
1370 if ((range->policy == GTK_UPDATE_CONTINUOUS) ||
1371 (!return_val && (range->policy == GTK_UPDATE_DELAYED)))
1373 gtk_signal_emit_by_name (GTK_OBJECT (range->adjustment), "value_changed");
1377 gtk_range_slider_update (range);
1378 gtk_range_clear_background (range);
1387 gtk_range_add_timer (GtkRange *range)
1389 g_return_if_fail (GTK_IS_RANGE (range));
1393 range->need_timer = TRUE;
1394 range->timer = gtk_timeout_add (SCROLL_INITIAL_DELAY,
1395 (GtkFunction) RANGE_CLASS (range)->timer,
1401 gtk_range_remove_timer (GtkRange *range)
1403 g_return_if_fail (GTK_IS_RANGE (range));
1407 gtk_timeout_remove (range->timer);
1410 range->need_timer = FALSE;
1414 gtk_range_adjustment_changed (GtkAdjustment *adjustment,
1419 g_return_if_fail (adjustment != NULL);
1420 g_return_if_fail (data != NULL);
1422 range = GTK_RANGE (data);
1424 if (((range->old_lower != adjustment->lower) ||
1425 (range->old_upper != adjustment->upper) ||
1426 (range->old_page_size != adjustment->page_size)) &&
1427 (range->old_value == adjustment->value))
1429 if ((adjustment->lower == adjustment->upper) ||
1430 (range->old_lower == (range->old_upper - range->old_page_size)))
1432 adjustment->value = adjustment->lower;
1433 gtk_signal_emit_by_name (GTK_OBJECT (adjustment), "value_changed");
1437 if ((range->old_value != adjustment->value) ||
1438 (range->old_lower != adjustment->lower) ||
1439 (range->old_upper != adjustment->upper) ||
1440 (range->old_page_size != adjustment->page_size))
1442 gtk_range_slider_update (range);
1443 gtk_range_clear_background (range);
1445 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;
1453 gtk_range_adjustment_value_changed (GtkAdjustment *adjustment,
1458 g_return_if_fail (adjustment != NULL);
1459 g_return_if_fail (data != NULL);
1461 range = GTK_RANGE (data);
1463 if (range->old_value != adjustment->value)
1465 gtk_range_slider_update (range);
1466 gtk_range_clear_background (range);
1468 range->old_value = adjustment->value;
1474 gtk_range_trough_hdims (GtkRange *range,
1484 g_return_if_fail (range != NULL);
1486 gdk_window_get_size (range->trough, &trough_width, NULL);
1487 gdk_window_get_size (range->slider, &slider_length, NULL);
1489 tleft = GTK_WIDGET (range)->style->xthickness;
1490 tright = trough_width - slider_length - GTK_WIDGET (range)->style->xthickness;
1492 if (range->step_back)
1494 gdk_window_get_size (range->step_back, &tmp_width, NULL);
1495 tleft += (tmp_width + RANGE_CLASS (range)->stepper_slider_spacing);
1498 if (range->step_forw)
1500 gdk_window_get_size (range->step_forw, &tmp_width, NULL);
1501 tright -= (tmp_width + RANGE_CLASS (range)->stepper_slider_spacing);
1511 gtk_range_trough_vdims (GtkRange *range,
1521 g_return_if_fail (range != NULL);
1523 gdk_window_get_size (range->trough, NULL, &trough_height);
1524 gdk_window_get_size (range->slider, NULL, &slider_length);
1526 ttop = GTK_WIDGET (range)->style->ythickness;
1527 tbottom = trough_height - slider_length - GTK_WIDGET (range)->style->ythickness;
1529 if (range->step_back)
1531 gdk_window_get_size (range->step_back, NULL, &tmp_height);
1532 ttop += (tmp_height + RANGE_CLASS (range)->stepper_slider_spacing);
1535 if (range->step_forw)
1537 gdk_window_get_size (range->step_forw, NULL, &tmp_height);
1538 tbottom -= (tmp_height + RANGE_CLASS (range)->stepper_slider_spacing);
1548 gtk_range_style_set (GtkWidget *widget,
1549 GtkStyle *previous_style)
1553 g_return_if_fail (widget != NULL);
1554 g_return_if_fail (GTK_IS_RANGE (widget));
1556 range = GTK_RANGE (widget);
1558 if (GTK_WIDGET_REALIZED (widget))
1561 gtk_style_set_background (widget->style, range->trough, GTK_STATE_ACTIVE);
1564 gtk_style_set_background (widget->style, range->slider, GTK_STATE_NORMAL);
1566 /* The backgrounds of the step_forw and step_back never actually
1567 * get drawn in draw calls, so we call gdk_window_clear() here
1568 * so they get the correct colors. This is a hack. OWT.
1571 if (range->step_forw)
1573 gtk_style_set_background (widget->style, range->step_forw, GTK_STATE_ACTIVE);
1574 gdk_window_clear (range->step_forw);
1577 if (range->step_back)
1579 gtk_style_set_background (widget->style, range->step_back, GTK_STATE_ACTIVE);
1580 gdk_window_clear (range->step_back);