/* GTK - The GIMP Toolkit * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald * * GtkSpinButton widget for GTK+ * Copyright (C) 1998 Lars Hamann and Stefan Jeske * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ /* * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS * file for a list of people on the GTK+ Team. See the ChangeLog * files for a list of changes. These files are distributed with * GTK+ at ftp://ftp.gtk.org/pub/gtk/. */ #include #include #include #include #include #include "gdk/gdkkeysyms.h" #include "gtkspinbutton.h" #include "gtkmain.h" #include "gtksignal.h" #include "gtksettings.h" #include "gtkintl.h" #define MIN_SPIN_BUTTON_WIDTH 30 #define ARROW_SIZE 11 #define SPIN_BUTTON_INITIAL_TIMER_DELAY 200 #define SPIN_BUTTON_TIMER_DELAY 20 #define MAX_TIMER_CALLS 5 #define EPSILON 1e-5 #define MAX_DIGITS 20 enum { PROP_0, PROP_ADJUSTMENT, PROP_CLIMB_RATE, PROP_DIGITS, PROP_SNAP_TO_TICKS, PROP_NUMERIC, PROP_WRAP, PROP_UPDATE_POLICY, PROP_VALUE }; /* Signals */ enum { INPUT, OUTPUT, VALUE_CHANGED, LAST_SIGNAL }; static void gtk_spin_button_class_init (GtkSpinButtonClass *klass); static void gtk_spin_button_init (GtkSpinButton *spin_button); static void gtk_spin_button_finalize (GObject *object); static void gtk_spin_button_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec); static void gtk_spin_button_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec); static void gtk_spin_button_map (GtkWidget *widget); static void gtk_spin_button_unmap (GtkWidget *widget); static void gtk_spin_button_realize (GtkWidget *widget); static void gtk_spin_button_unrealize (GtkWidget *widget); static void gtk_spin_button_size_request (GtkWidget *widget, GtkRequisition *requisition); static void gtk_spin_button_size_allocate (GtkWidget *widget, GtkAllocation *allocation); static gint gtk_spin_button_expose (GtkWidget *widget, GdkEventExpose *event); static gint gtk_spin_button_button_press (GtkWidget *widget, GdkEventButton *event); static gint gtk_spin_button_button_release (GtkWidget *widget, GdkEventButton *event); static gint gtk_spin_button_motion_notify (GtkWidget *widget, GdkEventMotion *event); static gint gtk_spin_button_enter_notify (GtkWidget *widget, GdkEventCrossing *event); static gint gtk_spin_button_leave_notify (GtkWidget *widget, GdkEventCrossing *event); static gint gtk_spin_button_focus_out (GtkWidget *widget, GdkEventFocus *event); static void gtk_spin_button_draw_arrow (GtkSpinButton *spin_button, guint arrow); static gint gtk_spin_button_timer (GtkSpinButton *spin_button); static void gtk_spin_button_value_changed (GtkAdjustment *adjustment, GtkSpinButton *spin_button); static gint gtk_spin_button_key_press (GtkWidget *widget, GdkEventKey *event); static gint gtk_spin_button_key_release (GtkWidget *widget, GdkEventKey *event); static gint gtk_spin_button_scroll (GtkWidget *widget, GdkEventScroll *event); static void gtk_spin_button_activate (GtkEntry *entry); static void gtk_spin_button_snap (GtkSpinButton *spin_button, gdouble val); static void gtk_spin_button_insert_text (GtkEntry *entry, const gchar *new_text, gint new_text_length, gint *position); static void gtk_spin_button_real_spin (GtkSpinButton *spin_button, gdouble step); static gint gtk_spin_button_default_input (GtkSpinButton *spin_button, gdouble *new_val); static gint gtk_spin_button_default_output (GtkSpinButton *spin_button); static gint spin_button_get_shadow_type (GtkSpinButton *spin_button); static GtkEntryClass *parent_class = NULL; static guint spinbutton_signals[LAST_SIGNAL] = {0}; GtkType gtk_spin_button_get_type (void) { static GtkType spin_button_type = 0; if (!spin_button_type) { static const GtkTypeInfo spin_button_info = { "GtkSpinButton", sizeof (GtkSpinButton), sizeof (GtkSpinButtonClass), (GtkClassInitFunc) gtk_spin_button_class_init, (GtkObjectInitFunc) gtk_spin_button_init, /* reserved_1 */ NULL, /* reserved_2 */ NULL, (GtkClassInitFunc) NULL, }; spin_button_type = gtk_type_unique (GTK_TYPE_ENTRY, &spin_button_info); } return spin_button_type; } static void gtk_spin_button_class_init (GtkSpinButtonClass *class) { GObjectClass *gobject_class = G_OBJECT_CLASS (class); GtkObjectClass *object_class; GtkWidgetClass *widget_class; GtkEntryClass *entry_class; object_class = (GtkObjectClass*) class; widget_class = (GtkWidgetClass*) class; entry_class = (GtkEntryClass*) class; parent_class = gtk_type_class (GTK_TYPE_ENTRY); gobject_class->finalize = gtk_spin_button_finalize; gobject_class->set_property = gtk_spin_button_set_property; gobject_class->get_property = gtk_spin_button_get_property; widget_class->map = gtk_spin_button_map; widget_class->unmap = gtk_spin_button_unmap; widget_class->realize = gtk_spin_button_realize; widget_class->unrealize = gtk_spin_button_unrealize; widget_class->size_request = gtk_spin_button_size_request; widget_class->size_allocate = gtk_spin_button_size_allocate; widget_class->expose_event = gtk_spin_button_expose; widget_class->scroll_event = gtk_spin_button_scroll; widget_class->button_press_event = gtk_spin_button_button_press; widget_class->button_release_event = gtk_spin_button_button_release; widget_class->motion_notify_event = gtk_spin_button_motion_notify; widget_class->key_press_event = gtk_spin_button_key_press; widget_class->key_release_event = gtk_spin_button_key_release; widget_class->enter_notify_event = gtk_spin_button_enter_notify; widget_class->leave_notify_event = gtk_spin_button_leave_notify; widget_class->focus_out_event = gtk_spin_button_focus_out; entry_class->insert_text = gtk_spin_button_insert_text; entry_class->activate = gtk_spin_button_activate; class->input = NULL; class->output = NULL; g_object_class_install_property (gobject_class, PROP_ADJUSTMENT, g_param_spec_object ("adjustment", _("Adjustment"), _("The adjustment that holds the value of the spinbutton"), GTK_TYPE_ADJUSTMENT, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_CLIMB_RATE, g_param_spec_double ("climb_rate", _("Climb Rate"), _("The acceleration rate when you hold down a button"), 0.0, G_MAXDOUBLE, 0.0, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_DIGITS, g_param_spec_uint ("digits", _("Digits"), _("The number of decimal places to display"), 0, MAX_DIGITS, 0, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_SNAP_TO_TICKS, g_param_spec_boolean ("snap_to_ticks", _("Snap to Ticks"), _("Whether erroneous values are automatically changed to a spin button's nearest step increment"), FALSE, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_NUMERIC, g_param_spec_boolean ("numeric", _("Numeric"), _("Whether non-numeric characters should be ignored"), FALSE, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_WRAP, g_param_spec_boolean ("wrap", _("Wrap"), _("Whether a spin button should wrap upon reaching its limits"), FALSE, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_UPDATE_POLICY, g_param_spec_enum ("update_policy", _("Update Policy"), _("Whether the spin button should update always, or only when the value is legal"), GTK_TYPE_SPIN_BUTTON_UPDATE_POLICY, GTK_UPDATE_ALWAYS, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_VALUE, g_param_spec_double ("value", _("Value"), _("Reads the current value, or sets a new value"), -G_MAXDOUBLE, G_MAXDOUBLE, 0.0, G_PARAM_READWRITE)); gtk_widget_class_install_style_property_parser (widget_class, g_param_spec_enum ("shadow_type", "Shadow Type", NULL, GTK_TYPE_SHADOW_TYPE, GTK_SHADOW_IN, G_PARAM_READABLE), gtk_rc_property_parse_enum); spinbutton_signals[INPUT] = gtk_signal_new ("input", GTK_RUN_LAST, GTK_CLASS_TYPE (object_class), GTK_SIGNAL_OFFSET (GtkSpinButtonClass, input), gtk_marshal_INT__POINTER, GTK_TYPE_INT, 1, GTK_TYPE_POINTER); spinbutton_signals[OUTPUT] = g_signal_new ("output", G_TYPE_FROM_CLASS(object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET(GtkSpinButtonClass, output), _gtk_boolean_handled_accumulator, NULL, gtk_marshal_BOOLEAN__VOID, G_TYPE_BOOLEAN, 0); spinbutton_signals[VALUE_CHANGED] = gtk_signal_new ("value_changed", GTK_RUN_LAST, GTK_CLASS_TYPE (object_class), GTK_SIGNAL_OFFSET (GtkSpinButtonClass, value_changed), gtk_marshal_VOID__VOID, GTK_TYPE_NONE, 0); } static void gtk_spin_button_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { GtkSpinButton *spin_button; spin_button = GTK_SPIN_BUTTON (object); switch (prop_id) { GtkAdjustment *adjustment; case PROP_ADJUSTMENT: adjustment = GTK_ADJUSTMENT (g_value_get_object (value)); if (!adjustment) adjustment = (GtkAdjustment*) gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0); gtk_spin_button_set_adjustment (spin_button, adjustment); break; case PROP_CLIMB_RATE: gtk_spin_button_configure (spin_button, spin_button->adjustment, g_value_get_double (value), spin_button->digits); break; case PROP_DIGITS: gtk_spin_button_configure (spin_button, spin_button->adjustment, spin_button->climb_rate, g_value_get_uint (value)); break; case PROP_SNAP_TO_TICKS: gtk_spin_button_set_snap_to_ticks (spin_button, g_value_get_boolean (value)); break; case PROP_NUMERIC: gtk_spin_button_set_numeric (spin_button, g_value_get_boolean (value)); break; case PROP_WRAP: gtk_spin_button_set_wrap (spin_button, g_value_get_boolean (value)); break; case PROP_UPDATE_POLICY: gtk_spin_button_set_update_policy (spin_button, g_value_get_enum (value)); break; case PROP_VALUE: gtk_spin_button_set_value (spin_button, g_value_get_double (value)); break; default: break; } } static void gtk_spin_button_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { GtkSpinButton *spin_button; spin_button = GTK_SPIN_BUTTON (object); switch (prop_id) { case PROP_ADJUSTMENT: g_value_set_object (value, G_OBJECT (spin_button->adjustment)); break; case PROP_CLIMB_RATE: g_value_set_double (value, spin_button->climb_rate); break; case PROP_DIGITS: g_value_set_uint (value, spin_button->digits); break; case PROP_SNAP_TO_TICKS: g_value_set_boolean (value, spin_button->snap_to_ticks); break; case PROP_NUMERIC: g_value_set_boolean (value, spin_button->numeric); break; case PROP_WRAP: g_value_set_boolean (value, spin_button->wrap); break; case PROP_UPDATE_POLICY: g_value_set_enum (value, spin_button->update_policy); break; case PROP_VALUE: g_value_set_double (value, spin_button->adjustment->value); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gtk_spin_button_init (GtkSpinButton *spin_button) { spin_button->adjustment = NULL; spin_button->panel = NULL; spin_button->timer = 0; spin_button->ev_time = 0; spin_button->climb_rate = 0.0; spin_button->timer_step = 0.0; spin_button->update_policy = GTK_UPDATE_ALWAYS; spin_button->in_child = 2; spin_button->click_child = 2; spin_button->button = 0; spin_button->need_timer = FALSE; spin_button->timer_calls = 0; spin_button->digits = 0; spin_button->numeric = FALSE; spin_button->wrap = FALSE; spin_button->snap_to_ticks = FALSE; gtk_spin_button_set_adjustment (spin_button, (GtkAdjustment*) gtk_adjustment_new (0, 0, 0, 0, 0, 0)); } static void gtk_spin_button_finalize (GObject *object) { g_return_if_fail (GTK_IS_SPIN_BUTTON (object)); gtk_object_unref (GTK_OBJECT (GTK_SPIN_BUTTON (object)->adjustment)); G_OBJECT_CLASS (parent_class)->finalize (object); } static void gtk_spin_button_map (GtkWidget *widget) { g_return_if_fail (GTK_IS_SPIN_BUTTON (widget)); if (GTK_WIDGET_REALIZED (widget) && !GTK_WIDGET_MAPPED (widget)) { GTK_WIDGET_CLASS (parent_class)->map (widget); gdk_window_show (GTK_SPIN_BUTTON (widget)->panel); } } static void gtk_spin_button_unmap (GtkWidget *widget) { g_return_if_fail (GTK_IS_SPIN_BUTTON (widget)); if (GTK_WIDGET_MAPPED (widget)) { gdk_window_hide (GTK_SPIN_BUTTON (widget)->panel); GTK_WIDGET_CLASS (parent_class)->unmap (widget); } } static void gtk_spin_button_realize (GtkWidget *widget) { GtkSpinButton *spin_button; GdkWindowAttr attributes; gint attributes_mask; guint real_width; gint return_val; g_return_if_fail (GTK_IS_SPIN_BUTTON (widget)); spin_button = GTK_SPIN_BUTTON (widget); real_width = widget->allocation.width; widget->allocation.width -= ARROW_SIZE + 2 * widget->style->xthickness; gtk_widget_set_events (widget, gtk_widget_get_events (widget) | GDK_KEY_RELEASE_MASK); GTK_WIDGET_CLASS (parent_class)->realize (widget); widget->allocation.width = real_width; attributes.window_type = GDK_WINDOW_CHILD; attributes.wclass = GDK_INPUT_OUTPUT; attributes.visual = gtk_widget_get_visual (widget); attributes.colormap = gtk_widget_get_colormap (widget); attributes.event_mask = gtk_widget_get_events (widget); attributes.event_mask |= GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | GDK_LEAVE_NOTIFY_MASK | GDK_ENTER_NOTIFY_MASK | GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK; attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP; attributes.x = (widget->allocation.x + widget->allocation.width - ARROW_SIZE - 2 * widget->style->xthickness); attributes.y = widget->allocation.y + (widget->allocation.height - widget->requisition.height) / 2; attributes.width = ARROW_SIZE + 2 * widget->style->xthickness; attributes.height = widget->requisition.height; spin_button->panel = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask); gdk_window_set_user_data (spin_button->panel, widget); gtk_style_set_background (widget->style, spin_button->panel, GTK_STATE_NORMAL); return_val = FALSE; gtk_signal_emit (GTK_OBJECT (spin_button), spinbutton_signals[OUTPUT], &return_val); if (return_val == FALSE) gtk_spin_button_default_output (spin_button); } static void gtk_spin_button_unrealize (GtkWidget *widget) { GtkSpinButton *spin; g_return_if_fail (GTK_IS_SPIN_BUTTON (widget)); spin = GTK_SPIN_BUTTON (widget); GTK_WIDGET_CLASS (parent_class)->unrealize (widget); if (spin->panel) { gdk_window_set_user_data (spin->panel, NULL); gdk_window_destroy (spin->panel); spin->panel = NULL; } } static int compute_double_length (double val, int digits) { int a; int extra; a = 1; if (fabs (val) > 1.0) a = floor (log10 (fabs (val))) + 1; extra = 0; /* The dot: */ if (digits > 0) extra++; /* The sign: */ if (val < 0) extra++; return a + digits + extra; } static void gtk_spin_button_size_request (GtkWidget *widget, GtkRequisition *requisition) { GtkEntry *entry; GtkSpinButton *spin_button; g_return_if_fail (requisition != NULL); g_return_if_fail (GTK_IS_SPIN_BUTTON (widget)); entry = GTK_ENTRY (widget); spin_button = GTK_SPIN_BUTTON (widget); GTK_WIDGET_CLASS (parent_class)->size_request (widget, requisition); if (entry->width_chars < 0) { PangoContext *context; PangoFontMetrics metrics; gint width; gint w; int string_len; context = gtk_widget_get_pango_context (widget); pango_context_get_metrics (context, widget->style->font_desc, pango_context_get_language (context), &metrics); /* Get max of MIN_SPIN_BUTTON_WIDTH, size of upper, size of lower */ width = MIN_SPIN_BUTTON_WIDTH; string_len = compute_double_length (spin_button->adjustment->upper, spin_button->digits); w = MIN (string_len, 10) * PANGO_PIXELS (metrics.approximate_digit_width); width = MAX (width, w); string_len = compute_double_length (spin_button->adjustment->lower, spin_button->adjustment->step_increment); w = MIN (string_len, 10) * PANGO_PIXELS (metrics.approximate_digit_width); width = MAX (width, w); requisition->width = width + ARROW_SIZE + 2 * widget->style->xthickness; } else requisition->width += ARROW_SIZE + 2 * widget->style->xthickness; } static void gtk_spin_button_size_allocate (GtkWidget *widget, GtkAllocation *allocation) { GtkAllocation child_allocation; g_return_if_fail (GTK_IS_SPIN_BUTTON (widget)); g_return_if_fail (allocation != NULL); child_allocation = *allocation; if (child_allocation.width > ARROW_SIZE + 2 * widget->style->xthickness) child_allocation.width -= ARROW_SIZE + 2 * widget->style->xthickness; if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL) child_allocation.x += ARROW_SIZE + 2 * widget->style->xthickness; GTK_WIDGET_CLASS (parent_class)->size_allocate (widget, &child_allocation); widget->allocation = *allocation; if (GTK_WIDGET_REALIZED (widget)) { child_allocation.width = ARROW_SIZE + 2 * widget->style->xthickness; child_allocation.height = widget->requisition.height; if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR) child_allocation.x = (allocation->x + allocation->width - ARROW_SIZE - 2 * widget->style->xthickness); else child_allocation.x = allocation->x; child_allocation.y = allocation->y + (allocation->height - widget->requisition.height) / 2; gdk_window_move_resize (GTK_SPIN_BUTTON (widget)->panel, child_allocation.x, child_allocation.y, child_allocation.width, child_allocation.height); } } static gint gtk_spin_button_expose (GtkWidget *widget, GdkEventExpose *event) { GtkSpinButton *spin; g_return_val_if_fail (GTK_IS_SPIN_BUTTON (widget), FALSE); g_return_val_if_fail (event != NULL, FALSE); spin = GTK_SPIN_BUTTON (widget); if (GTK_WIDGET_DRAWABLE (widget)) { GtkShadowType shadow_type; /* FIXME this seems like really broken code - * why aren't we looking at event->window * and acting accordingly? */ shadow_type = spin_button_get_shadow_type (spin); if (shadow_type != GTK_SHADOW_NONE) gtk_paint_box (widget->style, spin->panel, GTK_STATE_NORMAL, shadow_type, &event->area, widget, "spinbutton", 0, 0, ARROW_SIZE + 2 * widget->style->xthickness, widget->requisition.height); else { gdk_window_set_back_pixmap (spin->panel, NULL, TRUE); gdk_window_clear_area (spin->panel, event->area.x, event->area.y, event->area.width, event->area.height); } gtk_spin_button_draw_arrow (spin, GTK_ARROW_UP); gtk_spin_button_draw_arrow (spin, GTK_ARROW_DOWN); GTK_WIDGET_CLASS (parent_class)->expose_event (widget, event); } return FALSE; } static void gtk_spin_button_draw_arrow (GtkSpinButton *spin_button, guint arrow) { GtkShadowType spin_shadow_type; GtkStateType state_type; GtkShadowType shadow_type; GtkWidget *widget; gint x; gint y; g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button)); widget = GTK_WIDGET (spin_button); spin_shadow_type = spin_button_get_shadow_type (spin_button); if (GTK_WIDGET_DRAWABLE (spin_button)) { if (!spin_button->wrap && (((arrow == GTK_ARROW_UP && (spin_button->adjustment->upper - spin_button->adjustment->value <= EPSILON))) || ((arrow == GTK_ARROW_DOWN && (spin_button->adjustment->value - spin_button->adjustment->lower <= EPSILON))))) { shadow_type = GTK_SHADOW_ETCHED_IN; state_type = GTK_STATE_NORMAL; } else { if (spin_button->in_child == arrow) { if (spin_button->click_child == arrow) state_type = GTK_STATE_ACTIVE; else state_type = GTK_STATE_PRELIGHT; } else state_type = GTK_STATE_NORMAL; if (spin_button->click_child == arrow) shadow_type = GTK_SHADOW_IN; else shadow_type = GTK_SHADOW_OUT; } if (arrow == GTK_ARROW_UP) { if (spin_shadow_type != GTK_SHADOW_NONE) { x = widget->style->xthickness; y = widget->style->ythickness; } else { x = widget->style->xthickness - 1; y = widget->style->ythickness - 1; } gtk_paint_arrow (widget->style, spin_button->panel, state_type, shadow_type, NULL, widget, "spinbutton", arrow, TRUE, x, y, ARROW_SIZE, widget->requisition.height / 2 - widget->style->ythickness); } else { if (spin_shadow_type != GTK_SHADOW_NONE) { x = widget->style->xthickness; y = widget->requisition.height / 2; } else { x = widget->style->xthickness - 1; y = widget->requisition.height / 2 + 1; } gtk_paint_arrow (widget->style, spin_button->panel, state_type, shadow_type, NULL, widget, "spinbutton", arrow, TRUE, x, y, ARROW_SIZE, widget->requisition.height / 2 - widget->style->ythickness); } } } static gint gtk_spin_button_enter_notify (GtkWidget *widget, GdkEventCrossing *event) { GtkSpinButton *spin; g_return_val_if_fail (GTK_IS_SPIN_BUTTON (widget), FALSE); g_return_val_if_fail (event != NULL, FALSE); spin = GTK_SPIN_BUTTON (widget); if (event->window == spin->panel) { gint x; gint y; gdk_window_get_pointer (spin->panel, &x, &y, NULL); if (y <= widget->requisition.height / 2) { spin->in_child = GTK_ARROW_UP; if (spin->click_child == 2) gtk_spin_button_draw_arrow (spin, GTK_ARROW_UP); } else { spin->in_child = GTK_ARROW_DOWN; if (spin->click_child == 2) gtk_spin_button_draw_arrow (spin, GTK_ARROW_DOWN); } } return FALSE; } static gint gtk_spin_button_leave_notify (GtkWidget *widget, GdkEventCrossing *event) { GtkSpinButton *spin; g_return_val_if_fail (GTK_IS_SPIN_BUTTON (widget), FALSE); g_return_val_if_fail (event != NULL, FALSE); spin = GTK_SPIN_BUTTON (widget); if (event->window == spin->panel && spin->click_child == 2) { if (spin->in_child == GTK_ARROW_UP) { spin->in_child = 2; gtk_spin_button_draw_arrow (spin, GTK_ARROW_UP); } else { spin->in_child = 2; gtk_spin_button_draw_arrow (spin, GTK_ARROW_DOWN); } } return FALSE; } static gint gtk_spin_button_focus_out (GtkWidget *widget, GdkEventFocus *event) { g_return_val_if_fail (GTK_IS_SPIN_BUTTON (widget), FALSE); g_return_val_if_fail (event != NULL, FALSE); if (GTK_ENTRY (widget)->editable) gtk_spin_button_update (GTK_SPIN_BUTTON (widget)); return GTK_WIDGET_CLASS (parent_class)->focus_out_event (widget, event); } static gint gtk_spin_button_scroll (GtkWidget *widget, GdkEventScroll *event) { GtkSpinButton *spin; g_return_val_if_fail (GTK_IS_SPIN_BUTTON (widget), FALSE); g_return_val_if_fail (event != NULL, FALSE); spin = GTK_SPIN_BUTTON (widget); if (event->direction == GDK_SCROLL_UP) { if (!GTK_WIDGET_HAS_FOCUS (widget)) gtk_widget_grab_focus (widget); gtk_spin_button_real_spin (spin, spin->adjustment->step_increment); } else if (event->direction == GDK_SCROLL_DOWN) { if (!GTK_WIDGET_HAS_FOCUS (widget)) gtk_widget_grab_focus (widget); gtk_spin_button_real_spin (spin, -spin->adjustment->step_increment); } else return FALSE; return TRUE; } static gint gtk_spin_button_button_press (GtkWidget *widget, GdkEventButton *event) { GtkSpinButton *spin; g_return_val_if_fail (GTK_IS_SPIN_BUTTON (widget), FALSE); g_return_val_if_fail (event != NULL, FALSE); spin = GTK_SPIN_BUTTON (widget); if (!spin->button) { if (event->window == spin->panel) { if (!GTK_WIDGET_HAS_FOCUS (widget)) gtk_widget_grab_focus (widget); gtk_grab_add (widget); spin->button = event->button; if (GTK_ENTRY (widget)->editable) gtk_spin_button_update (spin); if (event->y <= widget->requisition.height / 2) { spin->click_child = GTK_ARROW_UP; if (event->button == 1) { gtk_spin_button_real_spin (spin, spin->adjustment->step_increment); if (!spin->timer) { spin->timer_step = spin->adjustment->step_increment; spin->need_timer = TRUE; spin->timer = gtk_timeout_add (SPIN_BUTTON_INITIAL_TIMER_DELAY, (GtkFunction) gtk_spin_button_timer, (gpointer) spin); } } else if (event->button == 2) { gtk_spin_button_real_spin (spin, spin->adjustment->page_increment); if (!spin->timer) { spin->timer_step = spin->adjustment->page_increment; spin->need_timer = TRUE; spin->timer = gtk_timeout_add (SPIN_BUTTON_INITIAL_TIMER_DELAY, (GtkFunction) gtk_spin_button_timer, (gpointer) spin); } } gtk_spin_button_draw_arrow (spin, GTK_ARROW_UP); } else { spin->click_child = GTK_ARROW_DOWN; if (event->button == 1) { gtk_spin_button_real_spin (spin, -spin->adjustment->step_increment); if (!spin->timer) { spin->timer_step = spin->adjustment->step_increment; spin->need_timer = TRUE; spin->timer = gtk_timeout_add (SPIN_BUTTON_INITIAL_TIMER_DELAY, (GtkFunction) gtk_spin_button_timer, (gpointer) spin); } } else if (event->button == 2) { gtk_spin_button_real_spin (spin, -spin->adjustment->page_increment); if (!spin->timer) { spin->timer_step = spin->adjustment->page_increment; spin->need_timer = TRUE; spin->timer = gtk_timeout_add (SPIN_BUTTON_INITIAL_TIMER_DELAY, (GtkFunction) gtk_spin_button_timer, (gpointer) spin); } } gtk_spin_button_draw_arrow (spin, GTK_ARROW_DOWN); } return TRUE; } else return GTK_WIDGET_CLASS (parent_class)->button_press_event (widget, event); } return FALSE; } static gint gtk_spin_button_button_release (GtkWidget *widget, GdkEventButton *event) { GtkSpinButton *spin; g_return_val_if_fail (GTK_IS_SPIN_BUTTON (widget), FALSE); g_return_val_if_fail (event != NULL, FALSE); spin = GTK_SPIN_BUTTON (widget); if (event->button == spin->button) { guint click_child; if (spin->timer) { gtk_timeout_remove (spin->timer); spin->timer = 0; spin->timer_calls = 0; spin->need_timer = FALSE; } if (event->button == 3) { if (event->y >= 0 && event->x >= 0 && event->y <= widget->requisition.height && event->x <= ARROW_SIZE + 2 * widget->style->xthickness) { if (spin->click_child == GTK_ARROW_UP && event->y <= widget->requisition.height / 2) { gdouble diff; diff = spin->adjustment->upper - spin->adjustment->value; if (diff > EPSILON) gtk_spin_button_real_spin (spin, diff); } else if (spin->click_child == GTK_ARROW_DOWN && event->y > widget->requisition.height / 2) { gdouble diff; diff = spin->adjustment->value - spin->adjustment->lower; if (diff > EPSILON) gtk_spin_button_real_spin (spin, -diff); } } } gtk_grab_remove (widget); click_child = spin->click_child; spin->click_child = 2; spin->button = 0; gtk_spin_button_draw_arrow (spin, click_child); return TRUE; } else return GTK_WIDGET_CLASS (parent_class)->button_release_event (widget, event); return FALSE; } static gint gtk_spin_button_motion_notify (GtkWidget *widget, GdkEventMotion *event) { GtkSpinButton *spin; g_return_val_if_fail (GTK_IS_SPIN_BUTTON (widget), FALSE); g_return_val_if_fail (event != NULL, FALSE); spin = GTK_SPIN_BUTTON (widget); if (spin->button) return FALSE; if (event->window == spin->panel) { gint y; y = event->y; if (event->is_hint) gdk_window_get_pointer (spin->panel, NULL, &y, NULL); if (y <= widget->requisition.height / 2 && spin->in_child == GTK_ARROW_DOWN) { spin->in_child = GTK_ARROW_UP; gtk_spin_button_draw_arrow (spin, GTK_ARROW_UP); gtk_spin_button_draw_arrow (spin, GTK_ARROW_DOWN); } else if (y > widget->requisition.height / 2 && spin->in_child == GTK_ARROW_UP) { spin->in_child = GTK_ARROW_DOWN; gtk_spin_button_draw_arrow (spin, GTK_ARROW_UP); gtk_spin_button_draw_arrow (spin, GTK_ARROW_DOWN); } return FALSE; } return GTK_WIDGET_CLASS (parent_class)->motion_notify_event (widget, event); } static gint gtk_spin_button_timer (GtkSpinButton *spin_button) { gboolean retval = FALSE; GDK_THREADS_ENTER (); if (spin_button->timer) { if (spin_button->click_child == GTK_ARROW_UP) gtk_spin_button_real_spin (spin_button, spin_button->timer_step); else gtk_spin_button_real_spin (spin_button, -spin_button->timer_step); if (spin_button->need_timer) { spin_button->need_timer = FALSE; spin_button->timer = gtk_timeout_add (SPIN_BUTTON_TIMER_DELAY, (GtkFunction) gtk_spin_button_timer, (gpointer) spin_button); } else { if (spin_button->climb_rate > 0.0 && spin_button->timer_step < spin_button->adjustment->page_increment) { if (spin_button->timer_calls < MAX_TIMER_CALLS) spin_button->timer_calls++; else { spin_button->timer_calls = 0; spin_button->timer_step += spin_button->climb_rate; } } retval = TRUE; } } GDK_THREADS_LEAVE (); return retval; } static void gtk_spin_button_value_changed (GtkAdjustment *adjustment, GtkSpinButton *spin_button) { gint return_val; g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment)); return_val = FALSE; gtk_signal_emit (GTK_OBJECT (spin_button), spinbutton_signals[OUTPUT], &return_val); if (return_val == FALSE) gtk_spin_button_default_output (spin_button); gtk_signal_emit (GTK_OBJECT (spin_button), spinbutton_signals[VALUE_CHANGED]); gtk_spin_button_draw_arrow (spin_button, GTK_ARROW_UP); gtk_spin_button_draw_arrow (spin_button, GTK_ARROW_DOWN); g_object_notify (G_OBJECT (spin_button), "value"); } static gint gtk_spin_button_key_press (GtkWidget *widget, GdkEventKey *event) { GtkSpinButton *spin; gint key; gboolean key_repeat = FALSE; gboolean retval = FALSE; g_return_val_if_fail (GTK_IS_SPIN_BUTTON (widget), FALSE); g_return_val_if_fail (event != NULL, FALSE); spin = GTK_SPIN_BUTTON (widget); key = event->keyval; key_repeat = (event->time == spin->ev_time); if (GTK_ENTRY (widget)->editable) { switch (key) { case GDK_KP_Up: case GDK_Up: if (GTK_WIDGET_HAS_FOCUS (widget)) { gtk_signal_emit_stop_by_name (GTK_OBJECT (widget), "key_press_event"); if (!key_repeat) spin->timer_step = spin->adjustment->step_increment; gtk_spin_button_real_spin (spin, spin->timer_step); if (key_repeat) { if (spin->climb_rate > 0.0 && spin->timer_step < spin->adjustment->page_increment) { if (spin->timer_calls < MAX_TIMER_CALLS) spin->timer_calls++; else { spin->timer_calls = 0; spin->timer_step += spin->climb_rate; } } } retval = TRUE; } break; case GDK_KP_Down: case GDK_Down: if (GTK_WIDGET_HAS_FOCUS (widget)) { gtk_signal_emit_stop_by_name (GTK_OBJECT (widget), "key_press_event"); if (!key_repeat) spin->timer_step = spin->adjustment->step_increment; gtk_spin_button_real_spin (spin, -spin->timer_step); if (key_repeat) { if (spin->climb_rate > 0.0 && spin->timer_step < spin->adjustment->page_increment) { if (spin->timer_calls < MAX_TIMER_CALLS) spin->timer_calls++; else { spin->timer_calls = 0; spin->timer_step += spin->climb_rate; } } } retval = TRUE; } break; case GDK_KP_Page_Up: case GDK_Page_Up: if (event->state & GDK_CONTROL_MASK) { gdouble diff = spin->adjustment->upper - spin->adjustment->value; if (diff > EPSILON) gtk_spin_button_real_spin (spin, diff); } else gtk_spin_button_real_spin (spin, spin->adjustment->page_increment); retval = TRUE; break; case GDK_KP_Page_Down: case GDK_Page_Down: if (event->state & GDK_CONTROL_MASK) { gdouble diff = spin->adjustment->value - spin->adjustment->lower; if (diff > EPSILON) gtk_spin_button_real_spin (spin, -diff); } else gtk_spin_button_real_spin (spin, -spin->adjustment->page_increment); retval = TRUE; break; default: break; } } if (retval) { gtk_spin_button_update (spin); return TRUE; } else return GTK_WIDGET_CLASS (parent_class)->key_press_event (widget, event); } static gint gtk_spin_button_key_release (GtkWidget *widget, GdkEventKey *event) { GtkSpinButton *spin; g_return_val_if_fail (GTK_IS_SPIN_BUTTON (widget), FALSE); spin = GTK_SPIN_BUTTON (widget); spin->ev_time = event->time; return TRUE; } static void gtk_spin_button_snap (GtkSpinButton *spin_button, gdouble val) { gdouble inc; gdouble tmp; inc = spin_button->adjustment->step_increment; tmp = (val - spin_button->adjustment->lower) / inc; if (tmp - floor (tmp) < ceil (tmp) - tmp) val = spin_button->adjustment->lower + floor (tmp) * inc; else val = spin_button->adjustment->lower + ceil (tmp) * inc; if (fabs (val - spin_button->adjustment->value) > EPSILON) gtk_adjustment_set_value (spin_button->adjustment, val); else { gint return_val = FALSE; gtk_signal_emit (GTK_OBJECT (spin_button), spinbutton_signals[OUTPUT], &return_val); if (return_val == FALSE) gtk_spin_button_default_output (spin_button); } } static void gtk_spin_button_activate (GtkEntry *entry) { if (entry->editable) gtk_spin_button_update (GTK_SPIN_BUTTON (entry)); } static void gtk_spin_button_insert_text (GtkEntry *entry, const gchar *new_text, gint new_text_length, gint *position) { GtkEditable *editable = GTK_EDITABLE (entry); GtkSpinButton *spin = GTK_SPIN_BUTTON (editable); if (spin->numeric) { struct lconv *lc; gboolean sign; gint dotpos = -1; gint i; GdkWChar pos_sign; GdkWChar neg_sign; gint entry_length; entry_length = entry->text_length; lc = localeconv (); if (*(lc->negative_sign)) neg_sign = *(lc->negative_sign); else neg_sign = '-'; if (*(lc->positive_sign)) pos_sign = *(lc->positive_sign); else pos_sign = '+'; for (sign=0, i=0; itext[i] == neg_sign) || (entry->text[i] == pos_sign)) { sign = 1; break; } if (sign && !(*position)) return; for (dotpos=-1, i=0; itext[i] == *(lc->decimal_point)) { dotpos = i; break; } if (dotpos > -1 && *position > dotpos && (gint)spin->digits - entry_length + dotpos - new_text_length + 1 < 0) return; for (i = 0; i < new_text_length; i++) { if (new_text[i] == neg_sign || new_text[i] == pos_sign) { if (sign || (*position) || i) return; sign = TRUE; } else if (new_text[i] == *(lc->decimal_point)) { if (!spin->digits || dotpos > -1 || (new_text_length - 1 - i + entry_length - *position > (gint)spin->digits)) return; dotpos = *position + i; } else if (new_text[i] < 0x30 || new_text[i] > 0x39) return; } } GTK_ENTRY_CLASS (parent_class)->insert_text (entry, new_text, new_text_length, position); } static void gtk_spin_button_real_spin (GtkSpinButton *spin_button, gdouble increment) { GtkAdjustment *adj; gdouble new_value = 0.0; g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button)); adj = spin_button->adjustment; new_value = adj->value + increment; if (increment > 0) { if (spin_button->wrap) { if (fabs (adj->value - adj->upper) < EPSILON) new_value = adj->lower; else if (new_value > adj->upper) new_value = adj->upper; } else new_value = MIN (new_value, adj->upper); } else if (increment < 0) { if (spin_button->wrap) { if (fabs (adj->value - adj->lower) < EPSILON) new_value = adj->upper; else if (new_value < adj->lower) new_value = adj->lower; } else new_value = MAX (new_value, adj->lower); } if (fabs (new_value - adj->value) > EPSILON) gtk_adjustment_set_value (adj, new_value); } static gint gtk_spin_button_default_input (GtkSpinButton *spin_button, gdouble *new_val) { gchar *err = NULL; *new_val = strtod (gtk_entry_get_text (GTK_ENTRY (spin_button)), &err); if (*err) return GTK_INPUT_ERROR; else return FALSE; } static gint gtk_spin_button_default_output (GtkSpinButton *spin_button) { gchar *buf = g_strdup_printf ("%0.*f", spin_button->digits, spin_button->adjustment->value); if (strcmp (buf, gtk_entry_get_text (GTK_ENTRY (spin_button)))) gtk_entry_set_text (GTK_ENTRY (spin_button), buf); g_free (buf); return FALSE; } /*********************************************************** *********************************************************** *** Public interface *** *********************************************************** ***********************************************************/ void gtk_spin_button_configure (GtkSpinButton *spin_button, GtkAdjustment *adjustment, gdouble climb_rate, guint digits) { g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button)); if (adjustment) gtk_spin_button_set_adjustment (spin_button, adjustment); else adjustment = spin_button->adjustment; g_object_freeze_notify (G_OBJECT (spin_button)); if (spin_button->digits != digits) { spin_button->digits = digits; g_object_notify (G_OBJECT (spin_button), "digits"); } if (spin_button->climb_rate != climb_rate) { spin_button->climb_rate = climb_rate; g_object_notify (G_OBJECT (spin_button), "climb_rate"); } g_object_thaw_notify (G_OBJECT (spin_button)); gtk_adjustment_value_changed (adjustment); } GtkWidget * gtk_spin_button_new (GtkAdjustment *adjustment, gdouble climb_rate, guint digits) { GtkSpinButton *spin; if (adjustment) g_return_val_if_fail (GTK_IS_ADJUSTMENT (adjustment), NULL); spin = gtk_type_new (GTK_TYPE_SPIN_BUTTON); gtk_spin_button_configure (spin, adjustment, climb_rate, digits); return GTK_WIDGET (spin); } /** * gtk_spin_button_new_with_range: * @min: Minimum allowable value * @max: Maximum allowable value * @step: Increment added or subtracted by spinning the widget * * This is a convenience constructor that allows creation of a numeric * #GtkSpinButton without manually creating an adjustment. The value is * initially set to the minimum value and a page increment of 10 * @step * is the default. The precision of the spin button is equivalent to the * precision of @step. * * Return value: the newly instantiated spin button **/ GtkWidget * gtk_spin_button_new_with_range (gdouble min, gdouble max, gdouble step) { GtkObject *adj; GtkSpinButton *spin; gint digits; g_return_val_if_fail (min < max, NULL); g_return_val_if_fail (step != 0.0, NULL); spin = gtk_type_new (GTK_TYPE_SPIN_BUTTON); adj = gtk_adjustment_new (min, min, max, step, 10 * step, step); if (fabs (step) >= 1.0 || step == 0.0) digits = 0; else { digits = abs ((gint) floor (log10 (fabs (step)))); if (digits > MAX_DIGITS) digits = MAX_DIGITS; } gtk_spin_button_configure (spin, GTK_ADJUSTMENT (adj), step, digits); gtk_spin_button_set_numeric (spin, TRUE); return GTK_WIDGET (spin); } /* Callback used when the spin button's adjustment changes. We need to redraw * the arrows when the adjustment's range changes, and reevaluate our size request. */ static void adjustment_changed_cb (GtkAdjustment *adjustment, gpointer data) { GtkSpinButton *spin_button; spin_button = GTK_SPIN_BUTTON (data); gtk_widget_queue_resize (GTK_WIDGET (spin_button)); } /** * gtk_spin_button_set_adjustment: * @spin_button: a #GtkSpinButton * @adjustment: a #GtkAdjustment to replace the existing adjustment * * Replaces the #GtkAdjustment associated with @spin_button. **/ void gtk_spin_button_set_adjustment (GtkSpinButton *spin_button, GtkAdjustment *adjustment) { g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button)); if (spin_button->adjustment != adjustment) { if (spin_button->adjustment) { gtk_signal_disconnect_by_data (GTK_OBJECT (spin_button->adjustment), (gpointer) spin_button); gtk_object_unref (GTK_OBJECT (spin_button->adjustment)); } spin_button->adjustment = adjustment; if (adjustment) { gtk_object_ref (GTK_OBJECT (adjustment)); gtk_object_sink (GTK_OBJECT (adjustment)); gtk_signal_connect (GTK_OBJECT (adjustment), "value_changed", (GtkSignalFunc) gtk_spin_button_value_changed, (gpointer) spin_button); gtk_signal_connect (GTK_OBJECT (adjustment), "changed", (GtkSignalFunc) adjustment_changed_cb, (gpointer) spin_button); } gtk_widget_queue_resize (GTK_WIDGET (spin_button)); } g_object_notify (G_OBJECT (spin_button), "adjustment"); } /** * gtk_spin_button_get_adjustment: * @spin_button: * * Get the adjustment associated with a #GtkSpinButton * * Return value: the #GtkAdjustment of @spin_button **/ GtkAdjustment * gtk_spin_button_get_adjustment (GtkSpinButton *spin_button) { g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spin_button), NULL); return spin_button->adjustment; } /** * gtk_spin_button_set_digits: * @spin_button: a #GtkSpinButton * @digits: the number of digits to be displayed for the spin button's value * * Set the precision to be displayed by @spin_button. Up to 20 digit precision * is allowed. **/ void gtk_spin_button_set_digits (GtkSpinButton *spin_button, guint digits) { g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button)); if (spin_button->digits != digits) { spin_button->digits = digits; gtk_spin_button_value_changed (spin_button->adjustment, spin_button); g_object_notify (G_OBJECT (spin_button), "digits"); /* since lower/upper may have changed */ gtk_widget_queue_resize (GTK_WIDGET (spin_button)); } } /** * gtk_spin_button_get_digits: * @spin_button: a #GtkSpinButton * * Fetches the precision of @spin_button. See gtk_spin_button_set_digits(). * * Returns: the current precision **/ guint gtk_spin_button_get_digits (GtkSpinButton *spin_button) { g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spin_button), 0); return spin_button->digits; } /** * gtk_spin_button_set_increments: * @spin_button: a #GtkSpinButton * @step: increment applied for a button 1 press. * @page: increment applied for a button 2 press. * * Sets the step and page increments for spin_button. This affects how * quickly the value changes when the spin button's arrows are activated. **/ void gtk_spin_button_set_increments (GtkSpinButton *spin_button, gdouble step, gdouble page) { g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button)); spin_button->adjustment->step_increment = step; spin_button->adjustment->page_increment = page; } /** * gtk_spin_button_get_increments: * @psin_button: a #GtkSpinButton * @step: location to store step increment, or %NULL * @page: location to store page increment, or %NULL * * Gets the current step and page the increments used by @spin_button. See * gtk_spin_button_set_increments(). **/ void gtk_spin_button_get_increments (GtkSpinButton *spin_button, gdouble *step, gdouble *page) { g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button)); if (step) *step = spin_button->adjustment->step_increment; if (page) *page = spin_button->adjustment->page_increment; } /** * gtk_spin_button_set_range: * @spin_button: a #GtkSpinButton * @min: minimum allowable value * @max: maximum allowable value * * Sets the minimum and maximum allowable values for @spin_button **/ void gtk_spin_button_set_range (GtkSpinButton *spin_button, gdouble min, gdouble max) { gdouble value; g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button)); spin_button->adjustment->lower = min; spin_button->adjustment->upper = max; value = CLAMP (spin_button->adjustment->value, spin_button->adjustment->lower, (spin_button->adjustment->upper - spin_button->adjustment->page_size)); if (value != spin_button->adjustment->value) gtk_spin_button_set_value (spin_button, value); gtk_adjustment_changed (spin_button->adjustment); } /** * gtk_spin_button_get_range: * @spin_button: a #GtkSpinButton * @min: location to store minimum allowed value, or %NULL * @max: location to store maximum allowed value, or %NULL * * Gets the range allowed for @spin_button. See * gtk_spin_button_set_range(). **/ void gtk_spin_button_get_range (GtkSpinButton *spin_button, gdouble *min, gdouble *max) { g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button)); if (min) *min = spin_button->adjustment->lower; if (max) *max = spin_button->adjustment->upper; } /** * gtk_spin_button_get_value: * @spin_button: a #GtkSpinButton * * Get the value in the @spin_button. * * Return value: the value of @spin_button **/ gdouble gtk_spin_button_get_value (GtkSpinButton *spin_button) { g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spin_button), 0.0); return spin_button->adjustment->value; } /** * gtk_spin_button_get_value_as_int: * @spin_button: a #GtkSpinButton * * Get the value @spin_button represented as an integer. * * Return value: the value of @spin_button **/ gint gtk_spin_button_get_value_as_int (GtkSpinButton *spin_button) { gdouble val; g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spin_button), 0); val = spin_button->adjustment->value; if (val - floor (val) < ceil (val) - val) return floor (val); else return ceil (val); } /** * gtk_spin_button_set_value: * @spin_button: a #GtkSpinButton * @value: the new value * * Set the value of @spin_button. **/ void gtk_spin_button_set_value (GtkSpinButton *spin_button, gdouble value) { g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button)); if (fabs (value - spin_button->adjustment->value) > EPSILON) gtk_adjustment_set_value (spin_button->adjustment, value); else { gint return_val = FALSE; gtk_signal_emit (GTK_OBJECT (spin_button), spinbutton_signals[OUTPUT], &return_val); if (return_val == FALSE) gtk_spin_button_default_output (spin_button); } } /** * gtk_spin_button_set_update_policy: * @spin_button: a #GtkSpinButton * @policy: a #GtkSpinButtonUpdatePolicy value * * Sets the update behavior of a spin button. This determines whether the * spin button is always updated or only when a valid value is set. **/ void gtk_spin_button_set_update_policy (GtkSpinButton *spin_button, GtkSpinButtonUpdatePolicy policy) { g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button)); if (spin_button->update_policy != policy) { spin_button->update_policy = policy; g_object_notify (G_OBJECT (spin_button), "update_policy"); } } /** * gtk_spin_button_get_update_policy: * @spin_button: a #GtkSpinButton * * Gets the update behavior of a spin button. See * gtk_spin_button_set_update_policy(). * * Return value: the current update policy **/ GtkSpinButtonUpdatePolicy gtk_spin_button_get_update_policy (GtkSpinButton *spin_button) { g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spin_button), GTK_UPDATE_ALWAYS); return spin_button->update_policy; } /** * gtk_spin_button_set_numeric: * @spin_button: a #GtkSpinButton * @numeric: flag indicating if only numeric entry is allowed. * * Sets the flag that determines if non-numeric text can be typed into * the spin button. **/ void gtk_spin_button_set_numeric (GtkSpinButton *spin_button, gboolean numeric) { g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button)); spin_button->numeric = (numeric != 0); g_object_notify (G_OBJECT (spin_button), "numeric"); } /** * gtk_spin_button_get_numeric: * @spin_button: a #GtkSpinButton * * Returns whether non-numeric text can be typed into the spin button. * See gtk_spin_button_set_numeric(). * * Return value: %TRUE if only numeric text can be entered **/ gboolean gtk_spin_button_get_numeric (GtkSpinButton *spin_button) { g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spin_button), FALSE); return spin_button->numeric; } /** * gtk_spin_button_set_wrap: * @spin_button: a #GtkSpinButton * @wrap: a flag indicating if wrapping behavior is performed. * * Sets the flag that determines if a spin button value wraps around to the * opposite limit when the upper or lower limit of the range is exceeded. **/ void gtk_spin_button_set_wrap (GtkSpinButton *spin_button, gboolean wrap) { g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button)); spin_button->wrap = (wrap != 0); g_object_notify (G_OBJECT (spin_button), "wrap"); } /** * gtk_spin_button_get_wrap: * @spin_button: a #GtkSpinButton * * Returns whether the spin button's value wraps around to the * opposite limit when the upper or lower limit of the range is * exceeded. See gtk_spin_button_set_wrap(). * * Return value: %TRUE if the spin button wraps around **/ gboolean gtk_spin_button_get_wrap (GtkSpinButton *spin_button) { g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spin_button), FALSE); return spin_button->wrap; } /** * spin_button_get_shadow_type: * @spin_button: a #GtkSpinButton * * Convenience function to Get the shadow type from the underlying widget's * style. * * Return value: the #GtkShadowType **/ static gint spin_button_get_shadow_type (GtkSpinButton *spin_button) { GtkShadowType rc_shadow_type; gtk_widget_style_get (GTK_WIDGET (spin_button), "shadow_type", &rc_shadow_type, NULL); return rc_shadow_type; } /** * gtk_spin_button_set_snap_to_ticks: * @spin_button: a #GtkSpinButton * @snap_to_ticks: a flag indicating if invalid values should be corrected. * * Sets the policy as to whether values are corrected to the nearest step * increment when a spin button is activated after providing an invalid value. **/ void gtk_spin_button_set_snap_to_ticks (GtkSpinButton *spin_button, gboolean snap_to_ticks) { guint new_val; g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button)); new_val = (snap_to_ticks != 0); if (new_val != spin_button->snap_to_ticks) { spin_button->snap_to_ticks = new_val; if (new_val && GTK_ENTRY (spin_button)->editable) gtk_spin_button_update (spin_button); g_object_notify (G_OBJECT (spin_button), "snap_to_ticks"); } } /** * gtk_spin_button_get_snap_to_ticks: * @spin_button: a #GtkSpinButton * * Returns whether the values are corrected to the nearest step. See * gtk_spin_button_set_snap_to_ticks(). * * Return value: %TRUE if values are snapped to the nearest step. **/ gboolean gtk_spin_button_get_snap_to_ticks (GtkSpinButton *spin_button) { g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spin_button), FALSE); return spin_button->snap_to_ticks; } /** * gtk_spin_button_spin: * @spin_button: a #GtkSpinButton * @direction: a #GtkSpinType indicating the direction to spin. * @increment: step increment to apply in the specified direction. * * Increment or decrement a spin button's value in a specified direction * by a specified amount. **/ void gtk_spin_button_spin (GtkSpinButton *spin_button, GtkSpinType direction, gdouble increment) { GtkAdjustment *adj; gdouble diff; g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button)); adj = spin_button->adjustment; /* for compatibility with the 1.0.x version of this function */ if (increment != 0 && increment != adj->step_increment && (direction == GTK_SPIN_STEP_FORWARD || direction == GTK_SPIN_STEP_BACKWARD)) { if (direction == GTK_SPIN_STEP_BACKWARD && increment > 0) increment = -increment; direction = GTK_SPIN_USER_DEFINED; } switch (direction) { case GTK_SPIN_STEP_FORWARD: gtk_spin_button_real_spin (spin_button, adj->step_increment); break; case GTK_SPIN_STEP_BACKWARD: gtk_spin_button_real_spin (spin_button, -adj->step_increment); break; case GTK_SPIN_PAGE_FORWARD: gtk_spin_button_real_spin (spin_button, adj->page_increment); break; case GTK_SPIN_PAGE_BACKWARD: gtk_spin_button_real_spin (spin_button, -adj->page_increment); break; case GTK_SPIN_HOME: diff = adj->value - adj->lower; if (diff > EPSILON) gtk_spin_button_real_spin (spin_button, -diff); break; case GTK_SPIN_END: diff = adj->upper - adj->value; if (diff > EPSILON) gtk_spin_button_real_spin (spin_button, diff); break; case GTK_SPIN_USER_DEFINED: if (increment != 0) gtk_spin_button_real_spin (spin_button, increment); break; default: break; } } /** * gtk_spin_button_update: * @spin_button: a #GtkSpinButton * * Manually force an update of the spin button. **/ void gtk_spin_button_update (GtkSpinButton *spin_button) { gdouble val; gint error = 0; gint return_val; g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button)); return_val = FALSE; gtk_signal_emit (GTK_OBJECT (spin_button), spinbutton_signals[INPUT], &val, &return_val); if (return_val == FALSE) { return_val = gtk_spin_button_default_input (spin_button, &val); error = (return_val == GTK_INPUT_ERROR); } else if (return_val == GTK_INPUT_ERROR) error = 1; if (spin_button->update_policy == GTK_UPDATE_ALWAYS) { if (val < spin_button->adjustment->lower) val = spin_button->adjustment->lower; else if (val > spin_button->adjustment->upper) val = spin_button->adjustment->upper; } else if ((spin_button->update_policy == GTK_UPDATE_IF_VALID) && (error || val < spin_button->adjustment->lower || val > spin_button->adjustment->upper)) { gtk_spin_button_value_changed (spin_button->adjustment, spin_button); return; } if (spin_button->snap_to_ticks) gtk_spin_button_snap (spin_button, val); else { if (fabs (val - spin_button->adjustment->value) > EPSILON) gtk_adjustment_set_value (spin_button->adjustment, val); else { return_val = FALSE; gtk_signal_emit (GTK_OBJECT (spin_button), spinbutton_signals[OUTPUT], &return_val); if (return_val == FALSE) gtk_spin_button_default_output (spin_button); } } }