1 /* GTK - The GIMP Toolkit
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
3 *
4 * GtkSpinButton widget for GTK+
5 * Copyright (C) 1998 Lars Hamann and Stefan Jeske
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the
19 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 * Boston, MA 02111-1307, USA.
21 */
22
23 /*
24 * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
25 * file for a list of people on the GTK+ Team. See the ChangeLog
26 * files for a list of changes. These files are distributed with
27 * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
28 */
29
30 #include "config.h"
31 #include <stdio.h>
32 #include <stdlib.h>
33 #include <math.h>
34 #include <string.h>
35 #include <locale.h>
36 #include "gdk/gdkkeysyms.h"
37 #include "gtkbindings.h"
38 #include "gtkspinbutton.h"
39 #include "gtkentryprivate.h"
40 #include "gtkmain.h"
41 #include "gtkmarshalers.h"
42 #include "gtksettings.h"
43 #include "gtkprivate.h"
44 #include "gtkintl.h"
45 #include "gtkalias.h"
46
47 #define MIN_SPIN_BUTTON_WIDTH 30
48 #define MAX_TIMER_CALLS 5
49 #define EPSILON 1e-10
50 #define MAX_DIGITS 20
51 #define MIN_ARROW_WIDTH 6
52
53 enum {
54 PROP_0,
55 PROP_ADJUSTMENT,
56 PROP_CLIMB_RATE,
57 PROP_DIGITS,
58 PROP_SNAP_TO_TICKS,
59 PROP_NUMERIC,
60 PROP_WRAP,
61 PROP_UPDATE_POLICY,
62 PROP_VALUE
63 };
64
65 /* Signals */
66 enum
67 {
68 INPUT,
69 OUTPUT,
70 VALUE_CHANGED,
71 CHANGE_VALUE,
72 WRAPPED,
73 LAST_SIGNAL
74 };
75
76 static void gtk_spin_button_editable_init (GtkEditableClass *iface);
77 static void gtk_spin_button_finalize (GObject *object);
78 static void gtk_spin_button_destroy (GtkObject *object);
79 static void gtk_spin_button_set_property (GObject *object,
80 guint prop_id,
81 const GValue *value,
82 GParamSpec *pspec);
83 static void gtk_spin_button_get_property (GObject *object,
84 guint prop_id,
85 GValue *value,
86 GParamSpec *pspec);
87 static void gtk_spin_button_map (GtkWidget *widget);
88 static void gtk_spin_button_unmap (GtkWidget *widget);
89 static void gtk_spin_button_realize (GtkWidget *widget);
90 static void gtk_spin_button_unrealize (GtkWidget *widget);
91 static void gtk_spin_button_size_request (GtkWidget *widget,
92 GtkRequisition *requisition);
93 static void gtk_spin_button_size_allocate (GtkWidget *widget,
94 GtkAllocation *allocation);
95 static gint gtk_spin_button_expose (GtkWidget *widget,
96 GdkEventExpose *event);
97 static gint gtk_spin_button_button_press (GtkWidget *widget,
98 GdkEventButton *event);
99 static gint gtk_spin_button_button_release (GtkWidget *widget,
100 GdkEventButton *event);
101 static gint gtk_spin_button_motion_notify (GtkWidget *widget,
102 GdkEventMotion *event);
103 static gint gtk_spin_button_enter_notify (GtkWidget *widget,
104 GdkEventCrossing *event);
105 static gint gtk_spin_button_leave_notify (GtkWidget *widget,
106 GdkEventCrossing *event);
107 static gint gtk_spin_button_focus_out (GtkWidget *widget,
108 GdkEventFocus *event);
109 static void gtk_spin_button_grab_notify (GtkWidget *widget,
110 gboolean was_grabbed);
111 static void gtk_spin_button_state_changed (GtkWidget *widget,
112 GtkStateType previous_state);
113 static void gtk_spin_button_style_set (GtkWidget *widget,
114 GtkStyle *previous_style);
115 static void gtk_spin_button_draw_arrow (GtkSpinButton *spin_button,
116 GdkRectangle *area,
117 GtkArrowType arrow_type);
118 static gboolean gtk_spin_button_timer (GtkSpinButton *spin_button);
119 static void gtk_spin_button_stop_spinning (GtkSpinButton *spin);
120 static void gtk_spin_button_value_changed (GtkAdjustment *adjustment,
121 GtkSpinButton *spin_button);
122 static gint gtk_spin_button_key_release (GtkWidget *widget,
123 GdkEventKey *event);
124 static gint gtk_spin_button_scroll (GtkWidget *widget,
125 GdkEventScroll *event);
126 static void gtk_spin_button_activate (GtkEntry *entry);
127 static void gtk_spin_button_get_text_area_size (GtkEntry *entry,
128 gint *x,
129 gint *y,
130 gint *width,
131 gint *height);
132 static void gtk_spin_button_snap (GtkSpinButton *spin_button,
133 gdouble val);
134 static void gtk_spin_button_insert_text (GtkEditable *editable,
135 const gchar *new_text,
136 gint new_text_length,
137 gint *position);
138 static void gtk_spin_button_real_spin (GtkSpinButton *spin_button,
139 gdouble step);
140 static void gtk_spin_button_real_change_value (GtkSpinButton *spin,
141 GtkScrollType scroll);
142
143 static gint gtk_spin_button_default_input (GtkSpinButton *spin_button,
144 gdouble *new_val);
145 static gint gtk_spin_button_default_output (GtkSpinButton *spin_button);
146
147 static gint spin_button_get_arrow_size (GtkSpinButton *spin_button);
148 static gint spin_button_get_shadow_type (GtkSpinButton *spin_button);
149
150 static guint spinbutton_signals[LAST_SIGNAL] = {0};
151
152 #define NO_ARROW 2
153
G_DEFINE_TYPE_WITH_CODE(GtkSpinButton,gtk_spin_button,GTK_TYPE_ENTRY,G_IMPLEMENT_INTERFACE (GTK_TYPE_EDITABLE,gtk_spin_button_editable_init))154 G_DEFINE_TYPE_WITH_CODE (GtkSpinButton, gtk_spin_button, GTK_TYPE_ENTRY,
155 G_IMPLEMENT_INTERFACE (GTK_TYPE_EDITABLE,
156 gtk_spin_button_editable_init))
157
158 #define add_spin_binding(binding_set, keyval, mask, scroll) \
159 gtk_binding_entry_add_signal (binding_set, keyval, mask, \
160 "change_value", 1, \
161 GTK_TYPE_SCROLL_TYPE, scroll)
162
163 static void
164 gtk_spin_button_class_init (GtkSpinButtonClass *class)
165 {
166 GObjectClass *gobject_class = G_OBJECT_CLASS (class);
167 GtkObjectClass *object_class = GTK_OBJECT_CLASS (class);
168 GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
169 GtkEntryClass *entry_class = GTK_ENTRY_CLASS (class);
170 GtkBindingSet *binding_set;
171
172 gobject_class->finalize = gtk_spin_button_finalize;
173
174 gobject_class->set_property = gtk_spin_button_set_property;
175 gobject_class->get_property = gtk_spin_button_get_property;
176
177 object_class->destroy = gtk_spin_button_destroy;
178
179 widget_class->map = gtk_spin_button_map;
180 widget_class->unmap = gtk_spin_button_unmap;
181 widget_class->realize = gtk_spin_button_realize;
182 widget_class->unrealize = gtk_spin_button_unrealize;
183 widget_class->size_request = gtk_spin_button_size_request;
184 widget_class->size_allocate = gtk_spin_button_size_allocate;
185 widget_class->expose_event = gtk_spin_button_expose;
186 widget_class->scroll_event = gtk_spin_button_scroll;
187 widget_class->button_press_event = gtk_spin_button_button_press;
188 widget_class->button_release_event = gtk_spin_button_button_release;
189 widget_class->motion_notify_event = gtk_spin_button_motion_notify;
190 widget_class->key_release_event = gtk_spin_button_key_release;
191 widget_class->enter_notify_event = gtk_spin_button_enter_notify;
192 widget_class->leave_notify_event = gtk_spin_button_leave_notify;
193 widget_class->focus_out_event = gtk_spin_button_focus_out;
194 widget_class->grab_notify = gtk_spin_button_grab_notify;
195 widget_class->state_changed = gtk_spin_button_state_changed;
196 widget_class->style_set = gtk_spin_button_style_set;
197
198 entry_class->activate = gtk_spin_button_activate;
199 entry_class->get_text_area_size = gtk_spin_button_get_text_area_size;
200
201 class->input = NULL;
202 class->output = NULL;
203 class->change_value = gtk_spin_button_real_change_value;
204
205 g_object_class_install_property (gobject_class,
206 PROP_ADJUSTMENT,
207 g_param_spec_object ("adjustment",
208 P_("Adjustment"),
209 P_("The adjustment that holds the value of the spinbutton"),
210 GTK_TYPE_ADJUSTMENT,
211 GTK_PARAM_READWRITE));
212
213 g_object_class_install_property (gobject_class,
214 PROP_CLIMB_RATE,
215 g_param_spec_double ("climb-rate",
216 P_("Climb Rate"),
217 P_("The acceleration rate when you hold down a button"),
218 0.0,
219 G_MAXDOUBLE,
220 0.0,
221 GTK_PARAM_READWRITE));
222
223 g_object_class_install_property (gobject_class,
224 PROP_DIGITS,
225 g_param_spec_uint ("digits",
226 P_("Digits"),
227 P_("The number of decimal places to display"),
228 0,
229 MAX_DIGITS,
230 0,
231 GTK_PARAM_READWRITE));
232
233 g_object_class_install_property (gobject_class,
234 PROP_SNAP_TO_TICKS,
235 g_param_spec_boolean ("snap-to-ticks",
236 P_("Snap to Ticks"),
237 P_("Whether erroneous values are automatically changed to a spin button's nearest step increment"),
238 FALSE,
239 GTK_PARAM_READWRITE));
240
241 g_object_class_install_property (gobject_class,
242 PROP_NUMERIC,
243 g_param_spec_boolean ("numeric",
244 P_("Numeric"),
245 P_("Whether non-numeric characters should be ignored"),
246 FALSE,
247 GTK_PARAM_READWRITE));
248
249 g_object_class_install_property (gobject_class,
250 PROP_WRAP,
251 g_param_spec_boolean ("wrap",
252 P_("Wrap"),
253 P_("Whether a spin button should wrap upon reaching its limits"),
254 FALSE,
255 GTK_PARAM_READWRITE));
256
257 g_object_class_install_property (gobject_class,
258 PROP_UPDATE_POLICY,
259 g_param_spec_enum ("update-policy",
260 P_("Update Policy"),
261 P_("Whether the spin button should update always, or only when the value is legal"),
262 GTK_TYPE_SPIN_BUTTON_UPDATE_POLICY,
263 GTK_UPDATE_ALWAYS,
264 GTK_PARAM_READWRITE));
265
266 g_object_class_install_property (gobject_class,
267 PROP_VALUE,
268 g_param_spec_double ("value",
269 P_("Value"),
270 P_("Reads the current value, or sets a new value"),
271 -G_MAXDOUBLE,
272 G_MAXDOUBLE,
273 0.0,
274 GTK_PARAM_READWRITE));
275
276 gtk_widget_class_install_style_property_parser (widget_class,
277 g_param_spec_enum ("shadow-type",
278 "Shadow Type",
279 P_("Style of bevel around the spin button"),
280 GTK_TYPE_SHADOW_TYPE,
281 GTK_SHADOW_IN,
282 GTK_PARAM_READABLE),
283 gtk_rc_property_parse_enum);
284 spinbutton_signals[INPUT] =
285 g_signal_new (I_("input"),
286 G_TYPE_FROM_CLASS (gobject_class),
287 G_SIGNAL_RUN_LAST,
288 G_STRUCT_OFFSET (GtkSpinButtonClass, input),
289 NULL, NULL,
290 _gtk_marshal_INT__POINTER,
291 G_TYPE_INT, 1,
292 G_TYPE_POINTER);
293
294 /**
295 * GtkSpinButton::output:
296 * @spin_button: the object which received the signal
297 *
298 * The ::output signal can be used to change to formatting
299 * of the value that is displayed in the spin buttons entry.
300 * |[
301 * /* show leading zeros */
302 * static gboolean
303 * on_output (GtkSpinButton *spin,
304 * gpointer data)
305 * {
306 * GtkAdjustment *adj;
307 * gchar *text;
308 * int value;
309 *
310 * adj = gtk_spin_button_get_adjustment (spin);
311 * value = (int)gtk_adjustment_get_value (adj);
312 * text = g_strdup_printf ("%02d", value);
313 * gtk_entry_set_text (GTK_ENTRY (spin), text);
314 * g_free (text);
315 *
316 * return TRUE;
317 * }
318 * ]|
319 *
320 * Returns: %TRUE if the value has been displayed.
321 */
322 spinbutton_signals[OUTPUT] =
323 g_signal_new (I_("output"),
324 G_TYPE_FROM_CLASS (gobject_class),
325 G_SIGNAL_RUN_LAST,
326 G_STRUCT_OFFSET (GtkSpinButtonClass, output),
327 _gtk_boolean_handled_accumulator, NULL,
328 _gtk_marshal_BOOLEAN__VOID,
329 G_TYPE_BOOLEAN, 0);
330
331 spinbutton_signals[VALUE_CHANGED] =
332 g_signal_new (I_("value-changed"),
333 G_TYPE_FROM_CLASS (gobject_class),
334 G_SIGNAL_RUN_LAST,
335 G_STRUCT_OFFSET (GtkSpinButtonClass, value_changed),
336 NULL, NULL,
337 _gtk_marshal_VOID__VOID,
338 G_TYPE_NONE, 0);
339
340 /**
341 * GtkSpinButton::wrapped:
342 * @spinbutton: the object which received the signal
343 *
344 * The wrapped signal is emitted right after the spinbutton wraps
345 * from its maximum to minimum value or vice-versa.
346 *
347 * Since: 2.10
348 */
349 spinbutton_signals[WRAPPED] =
350 g_signal_new (I_("wrapped"),
351 G_TYPE_FROM_CLASS (gobject_class),
352 G_SIGNAL_RUN_LAST,
353 G_STRUCT_OFFSET (GtkSpinButtonClass, wrapped),
354 NULL, NULL,
355 _gtk_marshal_VOID__VOID,
356 G_TYPE_NONE, 0);
357
358 /* Action signals */
359 spinbutton_signals[CHANGE_VALUE] =
360 g_signal_new (I_("change-value"),
361 G_TYPE_FROM_CLASS (gobject_class),
362 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
363 G_STRUCT_OFFSET (GtkSpinButtonClass, change_value),
364 NULL, NULL,
365 _gtk_marshal_VOID__ENUM,
366 G_TYPE_NONE, 1,
367 GTK_TYPE_SCROLL_TYPE);
368
369 binding_set = gtk_binding_set_by_class (class);
370
371 add_spin_binding (binding_set, GDK_Up, 0, GTK_SCROLL_STEP_UP);
372 add_spin_binding (binding_set, GDK_KP_Up, 0, GTK_SCROLL_STEP_UP);
373 add_spin_binding (binding_set, GDK_Down, 0, GTK_SCROLL_STEP_DOWN);
374 add_spin_binding (binding_set, GDK_KP_Down, 0, GTK_SCROLL_STEP_DOWN);
375 add_spin_binding (binding_set, GDK_Page_Up, 0, GTK_SCROLL_PAGE_UP);
376 add_spin_binding (binding_set, GDK_Page_Down, 0, GTK_SCROLL_PAGE_DOWN);
377 add_spin_binding (binding_set, GDK_Page_Up, GDK_CONTROL_MASK, GTK_SCROLL_END);
378 add_spin_binding (binding_set, GDK_Page_Down, GDK_CONTROL_MASK, GTK_SCROLL_START);
379 }
380
381 static void
gtk_spin_button_editable_init(GtkEditableClass * iface)382 gtk_spin_button_editable_init (GtkEditableClass *iface)
383 {
384 iface->insert_text = gtk_spin_button_insert_text;
385 }
386
387 static void
gtk_spin_button_set_property(GObject * object,guint prop_id,const GValue * value,GParamSpec * pspec)388 gtk_spin_button_set_property (GObject *object,
389 guint prop_id,
390 const GValue *value,
391 GParamSpec *pspec)
392 {
393 GtkSpinButton *spin_button = GTK_SPIN_BUTTON (object);
394
395 switch (prop_id)
396 {
397 GtkAdjustment *adjustment;
398
399 case PROP_ADJUSTMENT:
400 adjustment = GTK_ADJUSTMENT (g_value_get_object (value));
401 if (!adjustment)
402 adjustment = (GtkAdjustment*) gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
403 gtk_spin_button_set_adjustment (spin_button, adjustment);
404 break;
405 case PROP_CLIMB_RATE:
406 gtk_spin_button_configure (spin_button,
407 spin_button->adjustment,
408 g_value_get_double (value),
409 spin_button->digits);
410 break;
411 case PROP_DIGITS:
412 gtk_spin_button_configure (spin_button,
413 spin_button->adjustment,
414 spin_button->climb_rate,
415 g_value_get_uint (value));
416 break;
417 case PROP_SNAP_TO_TICKS:
418 gtk_spin_button_set_snap_to_ticks (spin_button, g_value_get_boolean (value));
419 break;
420 case PROP_NUMERIC:
421 gtk_spin_button_set_numeric (spin_button, g_value_get_boolean (value));
422 break;
423 case PROP_WRAP:
424 gtk_spin_button_set_wrap (spin_button, g_value_get_boolean (value));
425 break;
426 case PROP_UPDATE_POLICY:
427 gtk_spin_button_set_update_policy (spin_button, g_value_get_enum (value));
428 break;
429 case PROP_VALUE:
430 gtk_spin_button_set_value (spin_button, g_value_get_double (value));
431 break;
432 default:
433 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
434 break;
435 }
436 }
437
438 static void
gtk_spin_button_get_property(GObject * object,guint prop_id,GValue * value,GParamSpec * pspec)439 gtk_spin_button_get_property (GObject *object,
440 guint prop_id,
441 GValue *value,
442 GParamSpec *pspec)
443 {
444 GtkSpinButton *spin_button = GTK_SPIN_BUTTON (object);
445
446 switch (prop_id)
447 {
448 case PROP_ADJUSTMENT:
449 g_value_set_object (value, spin_button->adjustment);
450 break;
451 case PROP_CLIMB_RATE:
452 g_value_set_double (value, spin_button->climb_rate);
453 break;
454 case PROP_DIGITS:
455 g_value_set_uint (value, spin_button->digits);
456 break;
457 case PROP_SNAP_TO_TICKS:
458 g_value_set_boolean (value, spin_button->snap_to_ticks);
459 break;
460 case PROP_NUMERIC:
461 g_value_set_boolean (value, spin_button->numeric);
462 break;
463 case PROP_WRAP:
464 g_value_set_boolean (value, spin_button->wrap);
465 break;
466 case PROP_UPDATE_POLICY:
467 g_value_set_enum (value, spin_button->update_policy);
468 break;
469 case PROP_VALUE:
470 g_value_set_double (value, spin_button->adjustment->value);
471 break;
472 default:
473 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
474 break;
475 }
476 }
477
478 static void
gtk_spin_button_init(GtkSpinButton * spin_button)479 gtk_spin_button_init (GtkSpinButton *spin_button)
480 {
481 spin_button->adjustment = NULL;
482 spin_button->panel = NULL;
483 spin_button->timer = 0;
484 spin_button->climb_rate = 0.0;
485 spin_button->timer_step = 0.0;
486 spin_button->update_policy = GTK_UPDATE_ALWAYS;
487 spin_button->in_child = NO_ARROW;
488 spin_button->click_child = NO_ARROW;
489 spin_button->button = 0;
490 spin_button->need_timer = FALSE;
491 spin_button->timer_calls = 0;
492 spin_button->digits = 0;
493 spin_button->numeric = FALSE;
494 spin_button->wrap = FALSE;
495 spin_button->snap_to_ticks = FALSE;
496
497 gtk_spin_button_set_adjustment (spin_button,
498 (GtkAdjustment*) gtk_adjustment_new (0, 0, 0, 0, 0, 0));
499 }
500
501 static void
gtk_spin_button_finalize(GObject * object)502 gtk_spin_button_finalize (GObject *object)
503 {
504 gtk_spin_button_set_adjustment (GTK_SPIN_BUTTON (object), NULL);
505
506 G_OBJECT_CLASS (gtk_spin_button_parent_class)->finalize (object);
507 }
508
509 static void
gtk_spin_button_destroy(GtkObject * object)510 gtk_spin_button_destroy (GtkObject *object)
511 {
512 gtk_spin_button_stop_spinning (GTK_SPIN_BUTTON (object));
513
514 GTK_OBJECT_CLASS (gtk_spin_button_parent_class)->destroy (object);
515 }
516
517 static void
gtk_spin_button_map(GtkWidget * widget)518 gtk_spin_button_map (GtkWidget *widget)
519 {
520 if (gtk_widget_get_realized (widget) && !gtk_widget_get_mapped (widget))
521 {
522 GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->map (widget);
523 gdk_window_show (GTK_SPIN_BUTTON (widget)->panel);
524 }
525 }
526
527 static void
gtk_spin_button_unmap(GtkWidget * widget)528 gtk_spin_button_unmap (GtkWidget *widget)
529 {
530 if (gtk_widget_get_mapped (widget))
531 {
532 gtk_spin_button_stop_spinning (GTK_SPIN_BUTTON (widget));
533
534 gdk_window_hide (GTK_SPIN_BUTTON (widget)->panel);
535 GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->unmap (widget);
536 }
537 }
538
539 static void
gtk_spin_button_realize(GtkWidget * widget)540 gtk_spin_button_realize (GtkWidget *widget)
541 {
542 GtkSpinButton *spin_button = GTK_SPIN_BUTTON (widget);
543 GdkWindowAttr attributes;
544 gint attributes_mask;
545 gboolean return_val;
546 gint arrow_size;
547
548 arrow_size = spin_button_get_arrow_size (spin_button);
549
550 gtk_widget_set_events (widget, gtk_widget_get_events (widget) |
551 GDK_KEY_RELEASE_MASK);
552 GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->realize (widget);
553
554 attributes.window_type = GDK_WINDOW_CHILD;
555 attributes.wclass = GDK_INPUT_OUTPUT;
556 attributes.visual = gtk_widget_get_visual (widget);
557 attributes.colormap = gtk_widget_get_colormap (widget);
558 attributes.event_mask = gtk_widget_get_events (widget);
559 attributes.event_mask |= GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_MASK
560 | GDK_BUTTON_RELEASE_MASK | GDK_LEAVE_NOTIFY_MASK | GDK_ENTER_NOTIFY_MASK
561 | GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK;
562
563 attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
564
565 attributes.x = (widget->allocation.width - arrow_size -
566 2 * widget->style->xthickness);
567 attributes.y = (widget->allocation.height -
568 widget->requisition.height) / 2;
569 attributes.width = arrow_size + 2 * widget->style->xthickness;
570 attributes.height = widget->requisition.height;
571
572 spin_button->panel = gdk_window_new (widget->window,
573 &attributes, attributes_mask);
574 gdk_window_set_user_data (spin_button->panel, widget);
575
576 gtk_style_set_background (widget->style, spin_button->panel, GTK_STATE_NORMAL);
577
578 return_val = FALSE;
579 g_signal_emit (spin_button, spinbutton_signals[OUTPUT], 0, &return_val);
580
581 /* If output wasn't processed explicitly by the method connected to the
582 * 'output' signal; and if we don't have any explicit 'text' set initially,
583 * fallback to the default output. */
584 if (!return_val &&
585 (spin_button->numeric || gtk_entry_get_text (GTK_ENTRY (spin_button)) == NULL))
586 gtk_spin_button_default_output (spin_button);
587
588 gtk_widget_queue_resize (GTK_WIDGET (spin_button));
589 }
590
591 static void
gtk_spin_button_unrealize(GtkWidget * widget)592 gtk_spin_button_unrealize (GtkWidget *widget)
593 {
594 GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
595
596 gtk_spin_button_stop_spinning (GTK_SPIN_BUTTON (widget));
597
598 GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->unrealize (widget);
599
600 if (spin->panel)
601 {
602 gdk_window_set_user_data (spin->panel, NULL);
603 gdk_window_destroy (spin->panel);
604 spin->panel = NULL;
605 }
606 }
607
608 static int
compute_double_length(double val,int digits)609 compute_double_length (double val, int digits)
610 {
611 int a;
612 int extra;
613
614 a = 1;
615 if (fabs (val) > 1.0)
616 a = floor (log10 (fabs (val))) + 1;
617
618 extra = 0;
619
620 /* The dot: */
621 if (digits > 0)
622 extra++;
623
624 /* The sign: */
625 if (val < 0)
626 extra++;
627
628 return a + digits + extra;
629 }
630
631 static void
gtk_spin_button_size_request(GtkWidget * widget,GtkRequisition * requisition)632 gtk_spin_button_size_request (GtkWidget *widget,
633 GtkRequisition *requisition)
634 {
635 GtkSpinButton *spin_button = GTK_SPIN_BUTTON (widget);
636 GtkEntry *entry = GTK_ENTRY (widget);
637 gint arrow_size;
638
639 arrow_size = spin_button_get_arrow_size (spin_button);
640
641 GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->size_request (widget, requisition);
642
643 if (entry->width_chars < 0)
644 {
645 PangoContext *context;
646 PangoFontMetrics *metrics;
647 gint width;
648 gint w;
649 gint string_len;
650 gint max_string_len;
651 gint digit_width;
652 gboolean interior_focus;
653 gint focus_width;
654 gint xborder, yborder;
655 GtkBorder inner_border;
656
657 gtk_widget_style_get (widget,
658 "interior-focus", &interior_focus,
659 "focus-line-width", &focus_width,
660 NULL);
661
662 context = gtk_widget_get_pango_context (widget);
663 metrics = pango_context_get_metrics (context,
664 widget->style->font_desc,
665 pango_context_get_language (context));
666
667 digit_width = pango_font_metrics_get_approximate_digit_width (metrics);
668 digit_width = PANGO_SCALE *
669 ((digit_width + PANGO_SCALE - 1) / PANGO_SCALE);
670
671 pango_font_metrics_unref (metrics);
672
673 /* Get max of MIN_SPIN_BUTTON_WIDTH, size of upper, size of lower */
674
675 width = MIN_SPIN_BUTTON_WIDTH;
676 max_string_len = MAX (10, compute_double_length (1e9 * spin_button->adjustment->step_increment,
677 spin_button->digits));
678
679 string_len = compute_double_length (spin_button->adjustment->upper,
680 spin_button->digits);
681 w = PANGO_PIXELS (MIN (string_len, max_string_len) * digit_width);
682 width = MAX (width, w);
683 string_len = compute_double_length (spin_button->adjustment->lower,
684 spin_button->digits);
685 w = PANGO_PIXELS (MIN (string_len, max_string_len) * digit_width);
686 width = MAX (width, w);
687
688 _gtk_entry_get_borders (entry, &xborder, &yborder);
689 _gtk_entry_effective_inner_border (entry, &inner_border);
690
691 requisition->width = width + xborder * 2 + inner_border.left + inner_border.right;
692 }
693
694 requisition->width += arrow_size + 2 * widget->style->xthickness;
695 }
696
697 static void
gtk_spin_button_size_allocate(GtkWidget * widget,GtkAllocation * allocation)698 gtk_spin_button_size_allocate (GtkWidget *widget,
699 GtkAllocation *allocation)
700 {
701 GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
702 GtkAllocation panel_allocation;
703 gint arrow_size;
704 gint panel_width;
705
706 arrow_size = spin_button_get_arrow_size (spin);
707 panel_width = arrow_size + 2 * widget->style->xthickness;
708
709 widget->allocation = *allocation;
710
711 if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
712 panel_allocation.x = 0;
713 else
714 panel_allocation.x = allocation->width - panel_width;
715
716 panel_allocation.width = panel_width;
717 panel_allocation.height = MIN (widget->requisition.height, allocation->height);
718
719 panel_allocation.y = 0;
720
721 GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->size_allocate (widget, allocation);
722
723 if (gtk_widget_get_realized (widget))
724 {
725 gdk_window_move_resize (GTK_SPIN_BUTTON (widget)->panel,
726 panel_allocation.x,
727 panel_allocation.y,
728 panel_allocation.width,
729 panel_allocation.height);
730 }
731
732 gtk_widget_queue_draw (GTK_WIDGET (spin));
733 }
734
735 static gint
gtk_spin_button_expose(GtkWidget * widget,GdkEventExpose * event)736 gtk_spin_button_expose (GtkWidget *widget,
737 GdkEventExpose *event)
738 {
739 GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
740
741 if (gtk_widget_is_drawable (widget))
742 {
743 if (event->window == spin->panel)
744 {
745 GtkShadowType shadow_type;
746
747 shadow_type = spin_button_get_shadow_type (spin);
748
749 if (shadow_type != GTK_SHADOW_NONE)
750 {
751 gint width, height;
752 gboolean state_hint;
753 GtkStateType state;
754
755 gtk_widget_style_get (widget, "state-hint", &state_hint, NULL);
756 if (state_hint)
757 state = gtk_widget_has_focus (widget) ?
758 GTK_STATE_ACTIVE : gtk_widget_get_state (widget);
759 else
760 state = GTK_STATE_NORMAL;
761
762 width = gdk_window_get_width (spin->panel);
763 height = gdk_window_get_height (spin->panel);
764
765 if (gtk_entry_get_has_frame (GTK_ENTRY (spin)))
766 gtk_paint_box (widget->style, spin->panel,
767 state, shadow_type,
768 &event->area, widget, "spinbutton",
769 0, 0, width, height);
770 }
771
772 gtk_spin_button_draw_arrow (spin, &event->area, GTK_ARROW_UP);
773 gtk_spin_button_draw_arrow (spin, &event->area, GTK_ARROW_DOWN);
774 }
775 else
776 {
777 if (event->window == widget->window)
778 {
779 gint text_x, text_y, text_width, text_height, slice_x;
780
781 /* Since we reuse xthickness for the buttons panel on one side, and GtkEntry
782 * always sizes its background to (allocation->width - 2 * xthickness), we
783 * have to manually render the missing slice of the background on the panel
784 * side.
785 */
786 GTK_ENTRY_GET_CLASS (spin)->get_text_area_size (GTK_ENTRY (spin),
787 &text_x, &text_y,
788 &text_width, &text_height);
789
790 if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
791 slice_x = text_x - widget->style->xthickness;
792 else
793 slice_x = text_x + text_width;
794
795 gtk_paint_flat_box (widget->style, widget->window,
796 gtk_widget_get_state (widget), GTK_SHADOW_NONE,
797 &event->area, widget, "entry_bg",
798 slice_x, text_y,
799 widget->style->xthickness, text_height);
800 }
801
802 GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->expose_event (widget, event);
803 }
804 }
805
806 return FALSE;
807 }
808
809 static gboolean
spin_button_at_limit(GtkSpinButton * spin_button,GtkArrowType arrow)810 spin_button_at_limit (GtkSpinButton *spin_button,
811 GtkArrowType arrow)
812 {
813 GtkArrowType effective_arrow;
814
815 if (spin_button->wrap)
816 return FALSE;
817
818 if (spin_button->adjustment->step_increment > 0)
819 effective_arrow = arrow;
820 else
821 effective_arrow = arrow == GTK_ARROW_UP ? GTK_ARROW_DOWN : GTK_ARROW_UP;
822
823 if (effective_arrow == GTK_ARROW_UP &&
824 (spin_button->adjustment->upper - spin_button->adjustment->value <= EPSILON))
825 return TRUE;
826
827 if (effective_arrow == GTK_ARROW_DOWN &&
828 (spin_button->adjustment->value - spin_button->adjustment->lower <= EPSILON))
829 return TRUE;
830
831 return FALSE;
832 }
833
834 static void
gtk_spin_button_draw_arrow(GtkSpinButton * spin_button,GdkRectangle * area,GtkArrowType arrow_type)835 gtk_spin_button_draw_arrow (GtkSpinButton *spin_button,
836 GdkRectangle *area,
837 GtkArrowType arrow_type)
838 {
839 GtkStateType state_type;
840 GtkShadowType shadow_type;
841 GtkWidget *widget;
842 gint x;
843 gint y;
844 gint height;
845 gint width;
846 gint h, w;
847
848 g_return_if_fail (arrow_type == GTK_ARROW_UP || arrow_type == GTK_ARROW_DOWN);
849
850 widget = GTK_WIDGET (spin_button);
851
852 if (gtk_widget_is_drawable (widget))
853 {
854 width = spin_button_get_arrow_size (spin_button) + 2 * widget->style->xthickness;
855
856 if (arrow_type == GTK_ARROW_UP)
857 {
858 x = 0;
859 y = 0;
860
861 height = widget->requisition.height / 2;
862 }
863 else
864 {
865 x = 0;
866 y = widget->requisition.height / 2;
867
868 height = (widget->requisition.height + 1) / 2;
869 }
870
871 if (spin_button_at_limit (spin_button, arrow_type))
872 {
873 shadow_type = GTK_SHADOW_OUT;
874 state_type = GTK_STATE_INSENSITIVE;
875 }
876 else
877 {
878 if (spin_button->click_child == arrow_type)
879 {
880 state_type = GTK_STATE_ACTIVE;
881 shadow_type = GTK_SHADOW_IN;
882 }
883 else
884 {
885 if (spin_button->in_child == arrow_type &&
886 spin_button->click_child == NO_ARROW)
887 {
888 state_type = GTK_STATE_PRELIGHT;
889 }
890 else
891 {
892 state_type = gtk_widget_get_state (widget);
893 }
894
895 shadow_type = GTK_SHADOW_OUT;
896 }
897 }
898
899 gtk_paint_box (widget->style, spin_button->panel,
900 state_type, shadow_type,
901 area, widget,
902 (arrow_type == GTK_ARROW_UP)? "spinbutton_up" : "spinbutton_down",
903 x, y, width, height);
904
905 height = widget->requisition.height;
906
907 if (arrow_type == GTK_ARROW_DOWN)
908 {
909 y = height / 2;
910 height = height - y - 2;
911 }
912 else
913 {
914 y = 2;
915 height = height / 2 - 2;
916 }
917
918 width -= 3;
919
920 if (widget && gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
921 x = 2;
922 else
923 x = 1;
924
925 w = width / 2;
926 w -= w % 2 - 1; /* force odd */
927 h = (w + 1) / 2;
928
929 x += (width - w) / 2;
930 y += (height - h) / 2;
931
932 height = h;
933 width = w;
934
935 gtk_paint_arrow (widget->style, spin_button->panel,
936 state_type, shadow_type,
937 area, widget, "spinbutton",
938 arrow_type, TRUE,
939 x, y, width, height);
940 }
941 }
942
943 static gint
gtk_spin_button_enter_notify(GtkWidget * widget,GdkEventCrossing * event)944 gtk_spin_button_enter_notify (GtkWidget *widget,
945 GdkEventCrossing *event)
946 {
947 GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
948
949 if (event->window == spin->panel)
950 {
951 gint x;
952 gint y;
953
954 gdk_window_get_pointer (spin->panel, &x, &y, NULL);
955
956 if (y <= widget->requisition.height / 2)
957 spin->in_child = GTK_ARROW_UP;
958 else
959 spin->in_child = GTK_ARROW_DOWN;
960
961 gtk_widget_queue_draw (GTK_WIDGET (spin));
962 }
963
964 if (GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->enter_notify_event)
965 return GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->enter_notify_event (widget, event);
966
967 return FALSE;
968 }
969
970 static gint
gtk_spin_button_leave_notify(GtkWidget * widget,GdkEventCrossing * event)971 gtk_spin_button_leave_notify (GtkWidget *widget,
972 GdkEventCrossing *event)
973 {
974 GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
975
976 spin->in_child = NO_ARROW;
977 gtk_widget_queue_draw (GTK_WIDGET (spin));
978
979 if (GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->leave_notify_event)
980 return GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->leave_notify_event (widget, event);
981
982 return FALSE;
983 }
984
985 static gint
gtk_spin_button_focus_out(GtkWidget * widget,GdkEventFocus * event)986 gtk_spin_button_focus_out (GtkWidget *widget,
987 GdkEventFocus *event)
988 {
989 if (GTK_ENTRY (widget)->editable)
990 gtk_spin_button_update (GTK_SPIN_BUTTON (widget));
991
992 return GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->focus_out_event (widget, event);
993 }
994
995 static void
gtk_spin_button_grab_notify(GtkWidget * widget,gboolean was_grabbed)996 gtk_spin_button_grab_notify (GtkWidget *widget,
997 gboolean was_grabbed)
998 {
999 GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
1000
1001 if (!was_grabbed)
1002 {
1003 gtk_spin_button_stop_spinning (spin);
1004 gtk_widget_queue_draw (GTK_WIDGET (spin));
1005 }
1006 }
1007
1008 static void
gtk_spin_button_state_changed(GtkWidget * widget,GtkStateType previous_state)1009 gtk_spin_button_state_changed (GtkWidget *widget,
1010 GtkStateType previous_state)
1011 {
1012 GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
1013
1014 if (!gtk_widget_is_sensitive (widget))
1015 {
1016 gtk_spin_button_stop_spinning (spin);
1017 gtk_widget_queue_draw (GTK_WIDGET (spin));
1018 }
1019 }
1020
1021 static void
gtk_spin_button_style_set(GtkWidget * widget,GtkStyle * previous_style)1022 gtk_spin_button_style_set (GtkWidget *widget,
1023 GtkStyle *previous_style)
1024 {
1025 GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
1026
1027 if (previous_style && gtk_widget_get_realized (widget))
1028 gtk_style_set_background (widget->style, spin->panel, GTK_STATE_NORMAL);
1029
1030 GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->style_set (widget, previous_style);
1031 }
1032
1033
1034 static gint
gtk_spin_button_scroll(GtkWidget * widget,GdkEventScroll * event)1035 gtk_spin_button_scroll (GtkWidget *widget,
1036 GdkEventScroll *event)
1037 {
1038 GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
1039
1040 if (event->direction == GDK_SCROLL_UP)
1041 {
1042 if (!gtk_widget_has_focus (widget))
1043 gtk_widget_grab_focus (widget);
1044 gtk_spin_button_real_spin (spin, spin->adjustment->step_increment);
1045 }
1046 else if (event->direction == GDK_SCROLL_DOWN)
1047 {
1048 if (!gtk_widget_has_focus (widget))
1049 gtk_widget_grab_focus (widget);
1050 gtk_spin_button_real_spin (spin, -spin->adjustment->step_increment);
1051 }
1052 else
1053 return FALSE;
1054
1055 return TRUE;
1056 }
1057
1058 static void
gtk_spin_button_stop_spinning(GtkSpinButton * spin)1059 gtk_spin_button_stop_spinning (GtkSpinButton *spin)
1060 {
1061 if (spin->timer)
1062 {
1063 g_source_remove (spin->timer);
1064 spin->timer = 0;
1065 spin->timer_calls = 0;
1066 spin->need_timer = FALSE;
1067 }
1068
1069 spin->button = 0;
1070 spin->timer = 0;
1071 spin->timer_step = spin->adjustment->step_increment;
1072 spin->timer_calls = 0;
1073
1074 spin->click_child = NO_ARROW;
1075 spin->button = 0;
1076 }
1077
1078 static void
start_spinning(GtkSpinButton * spin,GtkArrowType click_child,gdouble step)1079 start_spinning (GtkSpinButton *spin,
1080 GtkArrowType click_child,
1081 gdouble step)
1082 {
1083 g_return_if_fail (click_child == GTK_ARROW_UP || click_child == GTK_ARROW_DOWN);
1084
1085 spin->click_child = click_child;
1086
1087 if (!spin->timer)
1088 {
1089 GtkSettings *settings = gtk_widget_get_settings (GTK_WIDGET (spin));
1090 guint timeout;
1091
1092 g_object_get (settings, "gtk-timeout-initial", &timeout, NULL);
1093
1094 spin->timer_step = step;
1095 spin->need_timer = TRUE;
1096 spin->timer = gdk_threads_add_timeout (timeout,
1097 (GSourceFunc) gtk_spin_button_timer,
1098 (gpointer) spin);
1099 }
1100 gtk_spin_button_real_spin (spin, click_child == GTK_ARROW_UP ? step : -step);
1101
1102 gtk_widget_queue_draw (GTK_WIDGET (spin));
1103 }
1104
1105 static gint
gtk_spin_button_button_press(GtkWidget * widget,GdkEventButton * event)1106 gtk_spin_button_button_press (GtkWidget *widget,
1107 GdkEventButton *event)
1108 {
1109 GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
1110
1111 if (!spin->button)
1112 {
1113 if (event->window == spin->panel)
1114 {
1115 if (!gtk_widget_has_focus (widget))
1116 gtk_widget_grab_focus (widget);
1117 spin->button = event->button;
1118
1119 if (GTK_ENTRY (widget)->editable)
1120 gtk_spin_button_update (spin);
1121
1122 if (event->y <= widget->requisition.height / 2)
1123 {
1124 if (event->button == 1)
1125 start_spinning (spin, GTK_ARROW_UP, spin->adjustment->step_increment);
1126 else if (event->button == 2)
1127 start_spinning (spin, GTK_ARROW_UP, spin->adjustment->page_increment);
1128 else
1129 spin->click_child = GTK_ARROW_UP;
1130 }
1131 else
1132 {
1133 if (event->button == 1)
1134 start_spinning (spin, GTK_ARROW_DOWN, spin->adjustment->step_increment);
1135 else if (event->button == 2)
1136 start_spinning (spin, GTK_ARROW_DOWN, spin->adjustment->page_increment);
1137 else
1138 spin->click_child = GTK_ARROW_DOWN;
1139 }
1140 return TRUE;
1141 }
1142 else
1143 return GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->button_press_event (widget, event);
1144 }
1145 return FALSE;
1146 }
1147
1148 static gint
gtk_spin_button_button_release(GtkWidget * widget,GdkEventButton * event)1149 gtk_spin_button_button_release (GtkWidget *widget,
1150 GdkEventButton *event)
1151 {
1152 GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
1153 gint arrow_size;
1154
1155 arrow_size = spin_button_get_arrow_size (spin);
1156
1157 if (event->button == spin->button)
1158 {
1159 int click_child = spin->click_child;
1160
1161 gtk_spin_button_stop_spinning (spin);
1162
1163 if (event->button == 3)
1164 {
1165 if (event->y >= 0 && event->x >= 0 &&
1166 event->y <= widget->requisition.height &&
1167 event->x <= arrow_size + 2 * widget->style->xthickness)
1168 {
1169 if (click_child == GTK_ARROW_UP &&
1170 event->y <= widget->requisition.height / 2)
1171 {
1172 gdouble diff;
1173
1174 diff = spin->adjustment->upper - spin->adjustment->value;
1175 if (diff > EPSILON)
1176 gtk_spin_button_real_spin (spin, diff);
1177 }
1178 else if (click_child == GTK_ARROW_DOWN &&
1179 event->y > widget->requisition.height / 2)
1180 {
1181 gdouble diff;
1182
1183 diff = spin->adjustment->value - spin->adjustment->lower;
1184 if (diff > EPSILON)
1185 gtk_spin_button_real_spin (spin, -diff);
1186 }
1187 }
1188 }
1189 gtk_widget_queue_draw (GTK_WIDGET (spin));
1190
1191 return TRUE;
1192 }
1193 else
1194 return GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->button_release_event (widget, event);
1195 }
1196
1197 static gint
gtk_spin_button_motion_notify(GtkWidget * widget,GdkEventMotion * event)1198 gtk_spin_button_motion_notify (GtkWidget *widget,
1199 GdkEventMotion *event)
1200 {
1201 GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
1202
1203 if (spin->button)
1204 return FALSE;
1205
1206 if (event->window == spin->panel)
1207 {
1208 gint y = event->y;
1209
1210 gdk_event_request_motions (event);
1211
1212 if (y <= widget->requisition.height / 2 &&
1213 spin->in_child == GTK_ARROW_DOWN)
1214 {
1215 spin->in_child = GTK_ARROW_UP;
1216 gtk_widget_queue_draw (GTK_WIDGET (spin));
1217 }
1218 else if (y > widget->requisition.height / 2 &&
1219 spin->in_child == GTK_ARROW_UP)
1220 {
1221 spin->in_child = GTK_ARROW_DOWN;
1222 gtk_widget_queue_draw (GTK_WIDGET (spin));
1223 }
1224
1225 return FALSE;
1226 }
1227
1228 return GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->motion_notify_event (widget, event);
1229 }
1230
1231 static gint
gtk_spin_button_timer(GtkSpinButton * spin_button)1232 gtk_spin_button_timer (GtkSpinButton *spin_button)
1233 {
1234 gboolean retval = FALSE;
1235
1236 if (spin_button->timer)
1237 {
1238 if (spin_button->click_child == GTK_ARROW_UP)
1239 gtk_spin_button_real_spin (spin_button, spin_button->timer_step);
1240 else
1241 gtk_spin_button_real_spin (spin_button, -spin_button->timer_step);
1242
1243 if (spin_button->need_timer)
1244 {
1245 GtkSettings *settings = gtk_widget_get_settings (GTK_WIDGET (spin_button));
1246 guint timeout;
1247
1248 g_object_get (settings, "gtk-timeout-repeat", &timeout, NULL);
1249
1250 spin_button->need_timer = FALSE;
1251 spin_button->timer = gdk_threads_add_timeout (timeout,
1252 (GSourceFunc) gtk_spin_button_timer,
1253 (gpointer) spin_button);
1254 }
1255 else
1256 {
1257 if (spin_button->climb_rate > 0.0 && spin_button->timer_step
1258 < spin_button->adjustment->page_increment)
1259 {
1260 if (spin_button->timer_calls < MAX_TIMER_CALLS)
1261 spin_button->timer_calls++;
1262 else
1263 {
1264 spin_button->timer_calls = 0;
1265 spin_button->timer_step += spin_button->climb_rate;
1266 }
1267 }
1268 retval = TRUE;
1269 }
1270 }
1271
1272 return retval;
1273 }
1274
1275 static void
gtk_spin_button_value_changed(GtkAdjustment * adjustment,GtkSpinButton * spin_button)1276 gtk_spin_button_value_changed (GtkAdjustment *adjustment,
1277 GtkSpinButton *spin_button)
1278 {
1279 gboolean return_val;
1280
1281 g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
1282
1283 return_val = FALSE;
1284 g_signal_emit (spin_button, spinbutton_signals[OUTPUT], 0, &return_val);
1285 if (return_val == FALSE)
1286 gtk_spin_button_default_output (spin_button);
1287
1288 g_signal_emit (spin_button, spinbutton_signals[VALUE_CHANGED], 0);
1289
1290 gtk_widget_queue_draw (GTK_WIDGET (spin_button));
1291
1292 g_object_notify (G_OBJECT (spin_button), "value");
1293 }
1294
1295 static void
gtk_spin_button_real_change_value(GtkSpinButton * spin,GtkScrollType scroll)1296 gtk_spin_button_real_change_value (GtkSpinButton *spin,
1297 GtkScrollType scroll)
1298 {
1299 gdouble old_value;
1300
1301 /* When the key binding is activated, there may be an outstanding
1302 * value, so we first have to commit what is currently written in
1303 * the spin buttons text entry. See #106574
1304 */
1305 gtk_spin_button_update (spin);
1306
1307 old_value = spin->adjustment->value;
1308
1309 /* We don't test whether the entry is editable, since
1310 * this key binding conceptually corresponds to changing
1311 * the value with the buttons using the mouse, which
1312 * we allow for non-editable spin buttons.
1313 */
1314 switch (scroll)
1315 {
1316 case GTK_SCROLL_STEP_BACKWARD:
1317 case GTK_SCROLL_STEP_DOWN:
1318 case GTK_SCROLL_STEP_LEFT:
1319 gtk_spin_button_real_spin (spin, -spin->timer_step);
1320
1321 if (spin->climb_rate > 0.0 && spin->timer_step
1322 < spin->adjustment->page_increment)
1323 {
1324 if (spin->timer_calls < MAX_TIMER_CALLS)
1325 spin->timer_calls++;
1326 else
1327 {
1328 spin->timer_calls = 0;
1329 spin->timer_step += spin->climb_rate;
1330 }
1331 }
1332 break;
1333
1334 case GTK_SCROLL_STEP_FORWARD:
1335 case GTK_SCROLL_STEP_UP:
1336 case GTK_SCROLL_STEP_RIGHT:
1337 gtk_spin_button_real_spin (spin, spin->timer_step);
1338
1339 if (spin->climb_rate > 0.0 && spin->timer_step
1340 < spin->adjustment->page_increment)
1341 {
1342 if (spin->timer_calls < MAX_TIMER_CALLS)
1343 spin->timer_calls++;
1344 else
1345 {
1346 spin->timer_calls = 0;
1347 spin->timer_step += spin->climb_rate;
1348 }
1349 }
1350 break;
1351
1352 case GTK_SCROLL_PAGE_BACKWARD:
1353 case GTK_SCROLL_PAGE_DOWN:
1354 case GTK_SCROLL_PAGE_LEFT:
1355 gtk_spin_button_real_spin (spin, -spin->adjustment->page_increment);
1356 break;
1357
1358 case GTK_SCROLL_PAGE_FORWARD:
1359 case GTK_SCROLL_PAGE_UP:
1360 case GTK_SCROLL_PAGE_RIGHT:
1361 gtk_spin_button_real_spin (spin, spin->adjustment->page_increment);
1362 break;
1363
1364 case GTK_SCROLL_START:
1365 {
1366 gdouble diff = spin->adjustment->value - spin->adjustment->lower;
1367 if (diff > EPSILON)
1368 gtk_spin_button_real_spin (spin, -diff);
1369 break;
1370 }
1371
1372 case GTK_SCROLL_END:
1373 {
1374 gdouble diff = spin->adjustment->upper - spin->adjustment->value;
1375 if (diff > EPSILON)
1376 gtk_spin_button_real_spin (spin, diff);
1377 break;
1378 }
1379
1380 default:
1381 g_warning ("Invalid scroll type %d for GtkSpinButton::change-value", scroll);
1382 break;
1383 }
1384
1385 gtk_spin_button_update (spin);
1386
1387 if (spin->adjustment->value == old_value)
1388 gtk_widget_error_bell (GTK_WIDGET (spin));
1389 }
1390
1391 static gint
gtk_spin_button_key_release(GtkWidget * widget,GdkEventKey * event)1392 gtk_spin_button_key_release (GtkWidget *widget,
1393 GdkEventKey *event)
1394 {
1395 GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
1396
1397 /* We only get a release at the end of a key repeat run, so reset the timer_step */
1398 spin->timer_step = spin->adjustment->step_increment;
1399 spin->timer_calls = 0;
1400
1401 return TRUE;
1402 }
1403
1404 static void
gtk_spin_button_snap(GtkSpinButton * spin_button,gdouble val)1405 gtk_spin_button_snap (GtkSpinButton *spin_button,
1406 gdouble val)
1407 {
1408 gdouble inc;
1409 gdouble tmp;
1410
1411 inc = spin_button->adjustment->step_increment;
1412 if (inc == 0)
1413 return;
1414
1415 tmp = (val - spin_button->adjustment->lower) / inc;
1416 if (tmp - floor (tmp) < ceil (tmp) - tmp)
1417 val = spin_button->adjustment->lower + floor (tmp) * inc;
1418 else
1419 val = spin_button->adjustment->lower + ceil (tmp) * inc;
1420
1421 gtk_spin_button_set_value (spin_button, val);
1422 }
1423
1424 static void
gtk_spin_button_activate(GtkEntry * entry)1425 gtk_spin_button_activate (GtkEntry *entry)
1426 {
1427 if (entry->editable)
1428 gtk_spin_button_update (GTK_SPIN_BUTTON (entry));
1429
1430 /* Chain up so that entry->activates_default is honored */
1431 GTK_ENTRY_CLASS (gtk_spin_button_parent_class)->activate (entry);
1432 }
1433
1434 static void
gtk_spin_button_get_text_area_size(GtkEntry * entry,gint * x,gint * y,gint * width,gint * height)1435 gtk_spin_button_get_text_area_size (GtkEntry *entry,
1436 gint *x,
1437 gint *y,
1438 gint *width,
1439 gint *height)
1440 {
1441 gint arrow_size;
1442 gint panel_width;
1443
1444 GTK_ENTRY_CLASS (gtk_spin_button_parent_class)->get_text_area_size (entry, x, y, width, height);
1445
1446 arrow_size = spin_button_get_arrow_size (GTK_SPIN_BUTTON (entry));
1447 panel_width = arrow_size + 2 * GTK_WIDGET (entry)->style->xthickness;
1448
1449 if (width)
1450 *width -= panel_width;
1451
1452 if (gtk_widget_get_direction (GTK_WIDGET (entry)) == GTK_TEXT_DIR_RTL && x)
1453 *x += panel_width;
1454 }
1455
1456 static void
gtk_spin_button_insert_text(GtkEditable * editable,const gchar * new_text,gint new_text_length,gint * position)1457 gtk_spin_button_insert_text (GtkEditable *editable,
1458 const gchar *new_text,
1459 gint new_text_length,
1460 gint *position)
1461 {
1462 GtkEntry *entry = GTK_ENTRY (editable);
1463 GtkSpinButton *spin = GTK_SPIN_BUTTON (editable);
1464 GtkEditableClass *parent_editable_iface = g_type_interface_peek (gtk_spin_button_parent_class, GTK_TYPE_EDITABLE);
1465
1466 if (spin->numeric)
1467 {
1468 struct lconv *lc;
1469 gboolean sign;
1470 gint dotpos = -1;
1471 gint i;
1472 GdkWChar pos_sign;
1473 GdkWChar neg_sign;
1474 gint entry_length;
1475 const gchar *entry_text;
1476
1477 entry_length = gtk_entry_get_text_length (entry);
1478 entry_text = gtk_entry_get_text (entry);
1479
1480 lc = localeconv ();
1481
1482 if (*(lc->negative_sign))
1483 neg_sign = *(lc->negative_sign);
1484 else
1485 neg_sign = '-';
1486
1487 if (*(lc->positive_sign))
1488 pos_sign = *(lc->positive_sign);
1489 else
1490 pos_sign = '+';
1491
1492 #ifdef G_OS_WIN32
1493 /* Workaround for bug caused by some Windows application messing
1494 * up the positive sign of the current locale, more specifically
1495 * HKEY_CURRENT_USER\Control Panel\International\sPositiveSign.
1496 * See bug #330743 and for instance
1497 * http://www.msnewsgroups.net/group/microsoft.public.dotnet.languages.csharp/topic36024.aspx
1498 *
1499 * I don't know if the positive sign always gets bogusly set to
1500 * a digit when the above Registry value is corrupted as
1501 * described. (In my test case, it got set to "8", and in the
1502 * bug report above it presumably was set ot "0".) Probably it
1503 * might get set to almost anything? So how to distinguish a
1504 * bogus value from some correct one for some locale? That is
1505 * probably hard, but at least we should filter out the
1506 * digits...
1507 */
1508 if (pos_sign >= '0' && pos_sign <= '9')
1509 pos_sign = '+';
1510 #endif
1511
1512 for (sign=0, i=0; i<entry_length; i++)
1513 if ((entry_text[i] == neg_sign) ||
1514 (entry_text[i] == pos_sign))
1515 {
1516 sign = 1;
1517 break;
1518 }
1519
1520 if (sign && !(*position))
1521 return;
1522
1523 for (dotpos=-1, i=0; i<entry_length; i++)
1524 if (entry_text[i] == *(lc->decimal_point))
1525 {
1526 dotpos = i;
1527 break;
1528 }
1529
1530 if (dotpos > -1 && *position > dotpos &&
1531 (gint)spin->digits - entry_length
1532 + dotpos - new_text_length + 1 < 0)
1533 return;
1534
1535 for (i = 0; i < new_text_length; i++)
1536 {
1537 if (new_text[i] == neg_sign || new_text[i] == pos_sign)
1538 {
1539 if (sign || (*position) || i)
1540 return;
1541 sign = TRUE;
1542 }
1543 else if (new_text[i] == *(lc->decimal_point))
1544 {
1545 if (!spin->digits || dotpos > -1 ||
1546 (new_text_length - 1 - i + entry_length
1547 - *position > (gint)spin->digits))
1548 return;
1549 dotpos = *position + i;
1550 }
1551 else if (new_text[i] < 0x30 || new_text[i] > 0x39)
1552 return;
1553 }
1554 }
1555
1556 parent_editable_iface->insert_text (editable, new_text,
1557 new_text_length, position);
1558 }
1559
1560 static void
gtk_spin_button_real_spin(GtkSpinButton * spin_button,gdouble increment)1561 gtk_spin_button_real_spin (GtkSpinButton *spin_button,
1562 gdouble increment)
1563 {
1564 GtkAdjustment *adj;
1565 gdouble new_value = 0.0;
1566 gboolean wrapped = FALSE;
1567
1568 adj = spin_button->adjustment;
1569
1570 new_value = adj->value + increment;
1571
1572 if (increment > 0)
1573 {
1574 if (spin_button->wrap)
1575 {
1576 if (fabs (adj->value - adj->upper) < EPSILON)
1577 {
1578 new_value = adj->lower;
1579 wrapped = TRUE;
1580 }
1581 else if (new_value > adj->upper)
1582 new_value = adj->upper;
1583 }
1584 else
1585 new_value = MIN (new_value, adj->upper);
1586 }
1587 else if (increment < 0)
1588 {
1589 if (spin_button->wrap)
1590 {
1591 if (fabs (adj->value - adj->lower) < EPSILON)
1592 {
1593 new_value = adj->upper;
1594 wrapped = TRUE;
1595 }
1596 else if (new_value < adj->lower)
1597 new_value = adj->lower;
1598 }
1599 else
1600 new_value = MAX (new_value, adj->lower);
1601 }
1602
1603 if (fabs (new_value - adj->value) > EPSILON)
1604 gtk_adjustment_set_value (adj, new_value);
1605
1606 if (wrapped)
1607 g_signal_emit (spin_button, spinbutton_signals[WRAPPED], 0);
1608
1609 gtk_widget_queue_draw (GTK_WIDGET (spin_button));
1610 }
1611
1612 static gint
gtk_spin_button_default_input(GtkSpinButton * spin_button,gdouble * new_val)1613 gtk_spin_button_default_input (GtkSpinButton *spin_button,
1614 gdouble *new_val)
1615 {
1616 gchar *err = NULL;
1617
1618 *new_val = g_strtod (gtk_entry_get_text (GTK_ENTRY (spin_button)), &err);
1619 if (*err)
1620 return GTK_INPUT_ERROR;
1621 else
1622 return FALSE;
1623 }
1624
1625 static gint
gtk_spin_button_default_output(GtkSpinButton * spin_button)1626 gtk_spin_button_default_output (GtkSpinButton *spin_button)
1627 {
1628 gchar *buf = g_strdup_printf ("%0.*f", spin_button->digits, spin_button->adjustment->value);
1629
1630 if (strcmp (buf, gtk_entry_get_text (GTK_ENTRY (spin_button))))
1631 gtk_entry_set_text (GTK_ENTRY (spin_button), buf);
1632 g_free (buf);
1633 return FALSE;
1634 }
1635
1636
1637 /***********************************************************
1638 ***********************************************************
1639 *** Public interface ***
1640 ***********************************************************
1641 ***********************************************************/
1642
1643
1644 /**
1645 * gtk_spin_button_configure:
1646 * @spin_button: a #GtkSpinButton
1647 * @adjustment: (allow-none): a #GtkAdjustment.
1648 * @climb_rate: the new climb rate.
1649 * @digits: the number of decimal places to display in the spin button.
1650 *
1651 * Changes the properties of an existing spin button. The adjustment, climb rate,
1652 * and number of decimal places are all changed accordingly, after this function call.
1653 */
1654 void
gtk_spin_button_configure(GtkSpinButton * spin_button,GtkAdjustment * adjustment,gdouble climb_rate,guint digits)1655 gtk_spin_button_configure (GtkSpinButton *spin_button,
1656 GtkAdjustment *adjustment,
1657 gdouble climb_rate,
1658 guint digits)
1659 {
1660 g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
1661
1662 if (adjustment)
1663 gtk_spin_button_set_adjustment (spin_button, adjustment);
1664 else
1665 adjustment = spin_button->adjustment;
1666
1667 g_object_freeze_notify (G_OBJECT (spin_button));
1668 if (spin_button->digits != digits)
1669 {
1670 spin_button->digits = digits;
1671 g_object_notify (G_OBJECT (spin_button), "digits");
1672 }
1673
1674 if (spin_button->climb_rate != climb_rate)
1675 {
1676 spin_button->climb_rate = climb_rate;
1677 g_object_notify (G_OBJECT (spin_button), "climb-rate");
1678 }
1679 g_object_thaw_notify (G_OBJECT (spin_button));
1680
1681 gtk_adjustment_value_changed (adjustment);
1682 }
1683
1684 GtkWidget *
gtk_spin_button_new(GtkAdjustment * adjustment,gdouble climb_rate,guint digits)1685 gtk_spin_button_new (GtkAdjustment *adjustment,
1686 gdouble climb_rate,
1687 guint digits)
1688 {
1689 GtkSpinButton *spin;
1690
1691 if (adjustment)
1692 g_return_val_if_fail (GTK_IS_ADJUSTMENT (adjustment), NULL);
1693
1694 spin = g_object_new (GTK_TYPE_SPIN_BUTTON, NULL);
1695
1696 gtk_spin_button_configure (spin, adjustment, climb_rate, digits);
1697
1698 return GTK_WIDGET (spin);
1699 }
1700
1701 /**
1702 * gtk_spin_button_new_with_range:
1703 * @min: Minimum allowable value
1704 * @max: Maximum allowable value
1705 * @step: Increment added or subtracted by spinning the widget
1706 *
1707 * This is a convenience constructor that allows creation of a numeric
1708 * #GtkSpinButton without manually creating an adjustment. The value is
1709 * initially set to the minimum value and a page increment of 10 * @step
1710 * is the default. The precision of the spin button is equivalent to the
1711 * precision of @step.
1712 *
1713 * Note that the way in which the precision is derived works best if @step
1714 * is a power of ten. If the resulting precision is not suitable for your
1715 * needs, use gtk_spin_button_set_digits() to correct it.
1716 *
1717 * Return value: The new spin button as a #GtkWidget.
1718 **/
1719 GtkWidget *
gtk_spin_button_new_with_range(gdouble min,gdouble max,gdouble step)1720 gtk_spin_button_new_with_range (gdouble min,
1721 gdouble max,
1722 gdouble step)
1723 {
1724 GtkObject *adj;
1725 GtkSpinButton *spin;
1726 gint digits;
1727
1728 g_return_val_if_fail (min <= max, NULL);
1729 g_return_val_if_fail (step != 0.0, NULL);
1730
1731 spin = g_object_new (GTK_TYPE_SPIN_BUTTON, NULL);
1732
1733 adj = gtk_adjustment_new (min, min, max, step, 10 * step, 0);
1734
1735 if (fabs (step) >= 1.0 || step == 0.0)
1736 digits = 0;
1737 else {
1738 digits = abs ((gint) floor (log10 (fabs (step))));
1739 if (digits > MAX_DIGITS)
1740 digits = MAX_DIGITS;
1741 }
1742
1743 gtk_spin_button_configure (spin, GTK_ADJUSTMENT (adj), step, digits);
1744
1745 gtk_spin_button_set_numeric (spin, TRUE);
1746
1747 return GTK_WIDGET (spin);
1748 }
1749
1750 static void
warn_nonzero_page_size(GtkAdjustment * adjustment)1751 warn_nonzero_page_size (GtkAdjustment *adjustment)
1752 {
1753 if (gtk_adjustment_get_page_size (adjustment) != 0.0)
1754 g_warning ("GtkSpinButton: setting an adjustment with non-zero page size is deprecated");
1755 }
1756
1757 /* Callback used when the spin button's adjustment changes. We need to redraw
1758 * the arrows when the adjustment's range changes, and reevaluate our size request.
1759 */
1760 static void
adjustment_changed_cb(GtkAdjustment * adjustment,gpointer data)1761 adjustment_changed_cb (GtkAdjustment *adjustment, gpointer data)
1762 {
1763 GtkSpinButton *spin_button;
1764
1765 spin_button = GTK_SPIN_BUTTON (data);
1766
1767 spin_button->timer_step = spin_button->adjustment->step_increment;
1768 warn_nonzero_page_size (adjustment);
1769 gtk_widget_queue_resize (GTK_WIDGET (spin_button));
1770 }
1771
1772 /**
1773 * gtk_spin_button_set_adjustment:
1774 * @spin_button: a #GtkSpinButton
1775 * @adjustment: a #GtkAdjustment to replace the existing adjustment
1776 *
1777 * Replaces the #GtkAdjustment associated with @spin_button.
1778 **/
1779 void
gtk_spin_button_set_adjustment(GtkSpinButton * spin_button,GtkAdjustment * adjustment)1780 gtk_spin_button_set_adjustment (GtkSpinButton *spin_button,
1781 GtkAdjustment *adjustment)
1782 {
1783 g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
1784
1785 if (spin_button->adjustment != adjustment)
1786 {
1787 if (spin_button->adjustment)
1788 {
1789 g_signal_handlers_disconnect_by_func (spin_button->adjustment,
1790 gtk_spin_button_value_changed,
1791 spin_button);
1792 g_signal_handlers_disconnect_by_func (spin_button->adjustment,
1793 adjustment_changed_cb,
1794 spin_button);
1795 g_object_unref (spin_button->adjustment);
1796 }
1797 spin_button->adjustment = adjustment;
1798 if (adjustment)
1799 {
1800 g_object_ref_sink (adjustment);
1801 g_signal_connect (adjustment, "value-changed",
1802 G_CALLBACK (gtk_spin_button_value_changed),
1803 spin_button);
1804 g_signal_connect (adjustment, "changed",
1805 G_CALLBACK (adjustment_changed_cb),
1806 spin_button);
1807 spin_button->timer_step = spin_button->adjustment->step_increment;
1808 warn_nonzero_page_size (adjustment);
1809 }
1810
1811 gtk_widget_queue_resize (GTK_WIDGET (spin_button));
1812 }
1813
1814 g_object_notify (G_OBJECT (spin_button), "adjustment");
1815 }
1816
1817 /**
1818 * gtk_spin_button_get_adjustment:
1819 * @spin_button: a #GtkSpinButton
1820 *
1821 * Get the adjustment associated with a #GtkSpinButton
1822 *
1823 * Return value: (transfer none): the #GtkAdjustment of @spin_button
1824 **/
1825 GtkAdjustment *
gtk_spin_button_get_adjustment(GtkSpinButton * spin_button)1826 gtk_spin_button_get_adjustment (GtkSpinButton *spin_button)
1827 {
1828 g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spin_button), NULL);
1829
1830 return spin_button->adjustment;
1831 }
1832
1833 /**
1834 * gtk_spin_button_set_digits:
1835 * @spin_button: a #GtkSpinButton
1836 * @digits: the number of digits after the decimal point to be displayed for the spin button's value
1837 *
1838 * Set the precision to be displayed by @spin_button. Up to 20 digit precision
1839 * is allowed.
1840 **/
1841 void
gtk_spin_button_set_digits(GtkSpinButton * spin_button,guint digits)1842 gtk_spin_button_set_digits (GtkSpinButton *spin_button,
1843 guint digits)
1844 {
1845 g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
1846
1847 if (spin_button->digits != digits)
1848 {
1849 spin_button->digits = digits;
1850 gtk_spin_button_value_changed (spin_button->adjustment, spin_button);
1851 g_object_notify (G_OBJECT (spin_button), "digits");
1852
1853 /* since lower/upper may have changed */
1854 gtk_widget_queue_resize (GTK_WIDGET (spin_button));
1855 }
1856 }
1857
1858 /**
1859 * gtk_spin_button_get_digits:
1860 * @spin_button: a #GtkSpinButton
1861 *
1862 * Fetches the precision of @spin_button. See gtk_spin_button_set_digits().
1863 *
1864 * Returns: the current precision
1865 **/
1866 guint
gtk_spin_button_get_digits(GtkSpinButton * spin_button)1867 gtk_spin_button_get_digits (GtkSpinButton *spin_button)
1868 {
1869 g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spin_button), 0);
1870
1871 return spin_button->digits;
1872 }
1873
1874 /**
1875 * gtk_spin_button_set_increments:
1876 * @spin_button: a #GtkSpinButton
1877 * @step: increment applied for a button 1 press.
1878 * @page: increment applied for a button 2 press.
1879 *
1880 * Sets the step and page increments for spin_button. This affects how
1881 * quickly the value changes when the spin button's arrows are activated.
1882 **/
1883 void
gtk_spin_button_set_increments(GtkSpinButton * spin_button,gdouble step,gdouble page)1884 gtk_spin_button_set_increments (GtkSpinButton *spin_button,
1885 gdouble step,
1886 gdouble page)
1887 {
1888 g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
1889
1890 spin_button->adjustment->step_increment = step;
1891 spin_button->adjustment->page_increment = page;
1892 }
1893
1894 /**
1895 * gtk_spin_button_get_increments:
1896 * @spin_button: a #GtkSpinButton
1897 * @step: (out) (allow-none): location to store step increment, or %NULL
1898 * @page: (out) (allow-none): location to store page increment, or %NULL
1899 *
1900 * Gets the current step and page the increments used by @spin_button. See
1901 * gtk_spin_button_set_increments().
1902 **/
1903 void
gtk_spin_button_get_increments(GtkSpinButton * spin_button,gdouble * step,gdouble * page)1904 gtk_spin_button_get_increments (GtkSpinButton *spin_button,
1905 gdouble *step,
1906 gdouble *page)
1907 {
1908 g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
1909
1910 if (step)
1911 *step = spin_button->adjustment->step_increment;
1912 if (page)
1913 *page = spin_button->adjustment->page_increment;
1914 }
1915
1916 /**
1917 * gtk_spin_button_set_range:
1918 * @spin_button: a #GtkSpinButton
1919 * @min: minimum allowable value
1920 * @max: maximum allowable value
1921 *
1922 * Sets the minimum and maximum allowable values for @spin_button
1923 **/
1924 void
gtk_spin_button_set_range(GtkSpinButton * spin_button,gdouble min,gdouble max)1925 gtk_spin_button_set_range (GtkSpinButton *spin_button,
1926 gdouble min,
1927 gdouble max)
1928 {
1929 gdouble value;
1930
1931 g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
1932
1933 spin_button->adjustment->lower = min;
1934 spin_button->adjustment->upper = max;
1935
1936 value = CLAMP (spin_button->adjustment->value,
1937 spin_button->adjustment->lower,
1938 (spin_button->adjustment->upper - spin_button->adjustment->page_size));
1939
1940 if (value != spin_button->adjustment->value)
1941 gtk_spin_button_set_value (spin_button, value);
1942
1943 gtk_adjustment_changed (spin_button->adjustment);
1944 }
1945
1946 /**
1947 * gtk_spin_button_get_range:
1948 * @spin_button: a #GtkSpinButton
1949 * @min: (out) (allow-none): location to store minimum allowed value, or %NULL
1950 * @max: (out) (allow-none): location to store maximum allowed value, or %NULL
1951 *
1952 * Gets the range allowed for @spin_button. See
1953 * gtk_spin_button_set_range().
1954 **/
1955 void
gtk_spin_button_get_range(GtkSpinButton * spin_button,gdouble * min,gdouble * max)1956 gtk_spin_button_get_range (GtkSpinButton *spin_button,
1957 gdouble *min,
1958 gdouble *max)
1959 {
1960 g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
1961
1962 if (min)
1963 *min = spin_button->adjustment->lower;
1964 if (max)
1965 *max = spin_button->adjustment->upper;
1966 }
1967
1968 /**
1969 * gtk_spin_button_get_value:
1970 * @spin_button: a #GtkSpinButton
1971 *
1972 * Get the value in the @spin_button.
1973 *
1974 * Return value: the value of @spin_button
1975 **/
1976 gdouble
gtk_spin_button_get_value(GtkSpinButton * spin_button)1977 gtk_spin_button_get_value (GtkSpinButton *spin_button)
1978 {
1979 g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spin_button), 0.0);
1980
1981 return spin_button->adjustment->value;
1982 }
1983
1984 /**
1985 * gtk_spin_button_get_value_as_int:
1986 * @spin_button: a #GtkSpinButton
1987 *
1988 * Get the value @spin_button represented as an integer.
1989 *
1990 * Return value: the value of @spin_button
1991 **/
1992 gint
gtk_spin_button_get_value_as_int(GtkSpinButton * spin_button)1993 gtk_spin_button_get_value_as_int (GtkSpinButton *spin_button)
1994 {
1995 gdouble val;
1996
1997 g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spin_button), 0);
1998
1999 val = spin_button->adjustment->value;
2000 if (val - floor (val) < ceil (val) - val)
2001 return floor (val);
2002 else
2003 return ceil (val);
2004 }
2005
2006 /**
2007 * gtk_spin_button_set_value:
2008 * @spin_button: a #GtkSpinButton
2009 * @value: the new value
2010 *
2011 * Set the value of @spin_button.
2012 **/
2013 void
gtk_spin_button_set_value(GtkSpinButton * spin_button,gdouble value)2014 gtk_spin_button_set_value (GtkSpinButton *spin_button,
2015 gdouble value)
2016 {
2017 g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
2018
2019 if (fabs (value - spin_button->adjustment->value) > EPSILON)
2020 gtk_adjustment_set_value (spin_button->adjustment, value);
2021 else
2022 {
2023 gint return_val = FALSE;
2024 g_signal_emit (spin_button, spinbutton_signals[OUTPUT], 0, &return_val);
2025 if (return_val == FALSE)
2026 gtk_spin_button_default_output (spin_button);
2027 }
2028 }
2029
2030 /**
2031 * gtk_spin_button_set_update_policy:
2032 * @spin_button: a #GtkSpinButton
2033 * @policy: a #GtkSpinButtonUpdatePolicy value
2034 *
2035 * Sets the update behavior of a spin button. This determines whether the
2036 * spin button is always updated or only when a valid value is set.
2037 **/
2038 void
gtk_spin_button_set_update_policy(GtkSpinButton * spin_button,GtkSpinButtonUpdatePolicy policy)2039 gtk_spin_button_set_update_policy (GtkSpinButton *spin_button,
2040 GtkSpinButtonUpdatePolicy policy)
2041 {
2042 g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
2043
2044 if (spin_button->update_policy != policy)
2045 {
2046 spin_button->update_policy = policy;
2047 g_object_notify (G_OBJECT (spin_button), "update-policy");
2048 }
2049 }
2050
2051 /**
2052 * gtk_spin_button_get_update_policy:
2053 * @spin_button: a #GtkSpinButton
2054 *
2055 * Gets the update behavior of a spin button. See
2056 * gtk_spin_button_set_update_policy().
2057 *
2058 * Return value: the current update policy
2059 **/
2060 GtkSpinButtonUpdatePolicy
gtk_spin_button_get_update_policy(GtkSpinButton * spin_button)2061 gtk_spin_button_get_update_policy (GtkSpinButton *spin_button)
2062 {
2063 g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spin_button), GTK_UPDATE_ALWAYS);
2064
2065 return spin_button->update_policy;
2066 }
2067
2068 /**
2069 * gtk_spin_button_set_numeric:
2070 * @spin_button: a #GtkSpinButton
2071 * @numeric: flag indicating if only numeric entry is allowed.
2072 *
2073 * Sets the flag that determines if non-numeric text can be typed into
2074 * the spin button.
2075 **/
2076 void
gtk_spin_button_set_numeric(GtkSpinButton * spin_button,gboolean numeric)2077 gtk_spin_button_set_numeric (GtkSpinButton *spin_button,
2078 gboolean numeric)
2079 {
2080 g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
2081
2082 numeric = numeric != FALSE;
2083
2084 if (spin_button->numeric != numeric)
2085 {
2086 spin_button->numeric = numeric;
2087 g_object_notify (G_OBJECT (spin_button), "numeric");
2088 }
2089 }
2090
2091 /**
2092 * gtk_spin_button_get_numeric:
2093 * @spin_button: a #GtkSpinButton
2094 *
2095 * Returns whether non-numeric text can be typed into the spin button.
2096 * See gtk_spin_button_set_numeric().
2097 *
2098 * Return value: %TRUE if only numeric text can be entered
2099 **/
2100 gboolean
gtk_spin_button_get_numeric(GtkSpinButton * spin_button)2101 gtk_spin_button_get_numeric (GtkSpinButton *spin_button)
2102 {
2103 g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spin_button), FALSE);
2104
2105 return spin_button->numeric;
2106 }
2107
2108 /**
2109 * gtk_spin_button_set_wrap:
2110 * @spin_button: a #GtkSpinButton
2111 * @wrap: a flag indicating if wrapping behavior is performed.
2112 *
2113 * Sets the flag that determines if a spin button value wraps around to the
2114 * opposite limit when the upper or lower limit of the range is exceeded.
2115 **/
2116 void
gtk_spin_button_set_wrap(GtkSpinButton * spin_button,gboolean wrap)2117 gtk_spin_button_set_wrap (GtkSpinButton *spin_button,
2118 gboolean wrap)
2119 {
2120 g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
2121
2122 wrap = wrap != FALSE;
2123
2124 if (spin_button->wrap != wrap)
2125 {
2126 spin_button->wrap = (wrap != 0);
2127
2128 g_object_notify (G_OBJECT (spin_button), "wrap");
2129 }
2130 }
2131
2132 /**
2133 * gtk_spin_button_get_wrap:
2134 * @spin_button: a #GtkSpinButton
2135 *
2136 * Returns whether the spin button's value wraps around to the
2137 * opposite limit when the upper or lower limit of the range is
2138 * exceeded. See gtk_spin_button_set_wrap().
2139 *
2140 * Return value: %TRUE if the spin button wraps around
2141 **/
2142 gboolean
gtk_spin_button_get_wrap(GtkSpinButton * spin_button)2143 gtk_spin_button_get_wrap (GtkSpinButton *spin_button)
2144 {
2145 g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spin_button), FALSE);
2146
2147 return spin_button->wrap;
2148 }
2149
2150 static gint
spin_button_get_arrow_size(GtkSpinButton * spin_button)2151 spin_button_get_arrow_size (GtkSpinButton *spin_button)
2152 {
2153 gint size = pango_font_description_get_size (GTK_WIDGET (spin_button)->style->font_desc);
2154 gint arrow_size;
2155
2156 arrow_size = MAX (PANGO_PIXELS (size), MIN_ARROW_WIDTH);
2157
2158 return arrow_size - arrow_size % 2; /* force even */
2159 }
2160
2161 /**
2162 * spin_button_get_shadow_type:
2163 * @spin_button: a #GtkSpinButton
2164 *
2165 * Convenience function to Get the shadow type from the underlying widget's
2166 * style.
2167 *
2168 * Return value: the #GtkShadowType
2169 **/
2170 static gint
spin_button_get_shadow_type(GtkSpinButton * spin_button)2171 spin_button_get_shadow_type (GtkSpinButton *spin_button)
2172 {
2173 GtkShadowType rc_shadow_type;
2174
2175 gtk_widget_style_get (GTK_WIDGET (spin_button), "shadow-type", &rc_shadow_type, NULL);
2176
2177 return rc_shadow_type;
2178 }
2179
2180 /**
2181 * gtk_spin_button_set_snap_to_ticks:
2182 * @spin_button: a #GtkSpinButton
2183 * @snap_to_ticks: a flag indicating if invalid values should be corrected.
2184 *
2185 * Sets the policy as to whether values are corrected to the nearest step
2186 * increment when a spin button is activated after providing an invalid value.
2187 **/
2188 void
gtk_spin_button_set_snap_to_ticks(GtkSpinButton * spin_button,gboolean snap_to_ticks)2189 gtk_spin_button_set_snap_to_ticks (GtkSpinButton *spin_button,
2190 gboolean snap_to_ticks)
2191 {
2192 guint new_val;
2193
2194 g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
2195
2196 new_val = (snap_to_ticks != 0);
2197
2198 if (new_val != spin_button->snap_to_ticks)
2199 {
2200 spin_button->snap_to_ticks = new_val;
2201 if (new_val && GTK_ENTRY (spin_button)->editable)
2202 gtk_spin_button_update (spin_button);
2203
2204 g_object_notify (G_OBJECT (spin_button), "snap-to-ticks");
2205 }
2206 }
2207
2208 /**
2209 * gtk_spin_button_get_snap_to_ticks:
2210 * @spin_button: a #GtkSpinButton
2211 *
2212 * Returns whether the values are corrected to the nearest step. See
2213 * gtk_spin_button_set_snap_to_ticks().
2214 *
2215 * Return value: %TRUE if values are snapped to the nearest step.
2216 **/
2217 gboolean
gtk_spin_button_get_snap_to_ticks(GtkSpinButton * spin_button)2218 gtk_spin_button_get_snap_to_ticks (GtkSpinButton *spin_button)
2219 {
2220 g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spin_button), FALSE);
2221
2222 return spin_button->snap_to_ticks;
2223 }
2224
2225 /**
2226 * gtk_spin_button_spin:
2227 * @spin_button: a #GtkSpinButton
2228 * @direction: a #GtkSpinType indicating the direction to spin.
2229 * @increment: step increment to apply in the specified direction.
2230 *
2231 * Increment or decrement a spin button's value in a specified direction
2232 * by a specified amount.
2233 **/
2234 void
gtk_spin_button_spin(GtkSpinButton * spin_button,GtkSpinType direction,gdouble increment)2235 gtk_spin_button_spin (GtkSpinButton *spin_button,
2236 GtkSpinType direction,
2237 gdouble increment)
2238 {
2239 GtkAdjustment *adj;
2240 gdouble diff;
2241
2242 g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
2243
2244 adj = spin_button->adjustment;
2245
2246 /* for compatibility with the 1.0.x version of this function */
2247 if (increment != 0 && increment != adj->step_increment &&
2248 (direction == GTK_SPIN_STEP_FORWARD ||
2249 direction == GTK_SPIN_STEP_BACKWARD))
2250 {
2251 if (direction == GTK_SPIN_STEP_BACKWARD && increment > 0)
2252 increment = -increment;
2253 direction = GTK_SPIN_USER_DEFINED;
2254 }
2255
2256 switch (direction)
2257 {
2258 case GTK_SPIN_STEP_FORWARD:
2259
2260 gtk_spin_button_real_spin (spin_button, adj->step_increment);
2261 break;
2262
2263 case GTK_SPIN_STEP_BACKWARD:
2264
2265 gtk_spin_button_real_spin (spin_button, -adj->step_increment);
2266 break;
2267
2268 case GTK_SPIN_PAGE_FORWARD:
2269
2270 gtk_spin_button_real_spin (spin_button, adj->page_increment);
2271 break;
2272
2273 case GTK_SPIN_PAGE_BACKWARD:
2274
2275 gtk_spin_button_real_spin (spin_button, -adj->page_increment);
2276 break;
2277
2278 case GTK_SPIN_HOME:
2279
2280 diff = adj->value - adj->lower;
2281 if (diff > EPSILON)
2282 gtk_spin_button_real_spin (spin_button, -diff);
2283 break;
2284
2285 case GTK_SPIN_END:
2286
2287 diff = adj->upper - adj->value;
2288 if (diff > EPSILON)
2289 gtk_spin_button_real_spin (spin_button, diff);
2290 break;
2291
2292 case GTK_SPIN_USER_DEFINED:
2293
2294 if (increment != 0)
2295 gtk_spin_button_real_spin (spin_button, increment);
2296 break;
2297
2298 default:
2299 break;
2300 }
2301 }
2302
2303 /**
2304 * gtk_spin_button_update:
2305 * @spin_button: a #GtkSpinButton
2306 *
2307 * Manually force an update of the spin button.
2308 **/
2309 void
gtk_spin_button_update(GtkSpinButton * spin_button)2310 gtk_spin_button_update (GtkSpinButton *spin_button)
2311 {
2312 gdouble val;
2313 gint error = 0;
2314 gint return_val;
2315
2316 g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
2317
2318 return_val = FALSE;
2319 g_signal_emit (spin_button, spinbutton_signals[INPUT], 0, &val, &return_val);
2320 if (return_val == FALSE)
2321 {
2322 return_val = gtk_spin_button_default_input (spin_button, &val);
2323 error = (return_val == GTK_INPUT_ERROR);
2324 }
2325 else if (return_val == GTK_INPUT_ERROR)
2326 error = 1;
2327
2328 gtk_widget_queue_draw (GTK_WIDGET (spin_button));
2329
2330 if (spin_button->update_policy == GTK_UPDATE_ALWAYS)
2331 {
2332 if (val < spin_button->adjustment->lower)
2333 val = spin_button->adjustment->lower;
2334 else if (val > spin_button->adjustment->upper)
2335 val = spin_button->adjustment->upper;
2336 }
2337 else if ((spin_button->update_policy == GTK_UPDATE_IF_VALID) &&
2338 (error ||
2339 val < spin_button->adjustment->lower ||
2340 val > spin_button->adjustment->upper))
2341 {
2342 gtk_spin_button_value_changed (spin_button->adjustment, spin_button);
2343 return;
2344 }
2345
2346 if (spin_button->snap_to_ticks)
2347 gtk_spin_button_snap (spin_button, val);
2348 else
2349 gtk_spin_button_set_value (spin_button, val);
2350 }
2351
2352 #define __GTK_SPIN_BUTTON_C__
2353 #include "gtkaliasdef.c"
2354