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gtk2/gtk/gtkspinbutton.c
Cosimo Cecchi 64ef11985b spinbutton: center-align by default
2011-03-03 17:48:25 -05:00

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/* 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 "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <string.h>
#include <locale.h>
#include "gtkbindings.h"
#include "gtkspinbutton.h"
#include "gtkentryprivate.h"
#include "gtkmainprivate.h"
#include "gtkmarshalers.h"
#include "gtksettings.h"
#include "gtkprivate.h"
#include "gtkintl.h"
#include "gtktypebuiltins.h"
#define MIN_SPIN_BUTTON_WIDTH 30
#define MAX_TIMER_CALLS 5
#define EPSILON 1e-10
#define MAX_DIGITS 20
#define MIN_ARROW_WIDTH 6
/**
* SECTION:gtkspinbutton
* @Title: GtkSpinButton
* @Short_description: Retrieve an integer or floating-point number from
* the user
* @See_also: #GtkEntry
*
* A #GtkSpinButton is an ideal way to allow the user to set the value of
* some attribute. Rather than having to directly type a number into a
* #GtkEntry, GtkSpinButton allows the user to click on one of two arrows
* to increment or decrement the displayed value. A value can still be
* typed in, with the bonus that it can be checked to ensure it is in a
* given range.
*
* The main properties of a GtkSpinButton are through an adjustment.
* See the #GtkAdjustment section for more details about an adjustment's
* properties.
*
* <example>
* <title>Using a GtkSpinButton to get an integer</title>
* <programlisting>
* /&ast; Provides a function to retrieve an integer value from a
* &ast; GtkSpinButton and creates a spin button to model percentage
* &ast; values.
* &ast;/
*
* gint
* grab_int_value (GtkSpinButton *button,
* gpointer user_data)
* {
* return gtk_spin_button_get_value_as_int (button);
* }
*
* void
* create_integer_spin_button (void)
* {
*
* GtkWidget *window, *button;
* GtkAdjustment *adjustment;
*
* adjustment = gtk_adjustment_new (50.0, 0.0, 100.0, 1.0, 5.0, 0.0);
*
* window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
* gtk_container_set_border_width (GTK_CONTAINER (window), 5);
*
* /&ast; creates the spinbutton, with no decimal places &ast;/
* button = gtk_spin_button_new (adjustment, 1.0, 0);
* gtk_container_add (GTK_CONTAINER (window), button);
*
* gtk_widget_show_all (window);
* }
* </programlisting>
* </example>
*
* <example>
* <title>Using a GtkSpinButton to get a floating point value</title>
* <programlisting>
* /&ast; Provides a function to retrieve a floating point value from a
* &ast; GtkSpinButton, and creates a high precision spin button.
* &ast;/
*
* gfloat
* grab_float_value (GtkSpinButton *button,
* gpointer user_data)
* {
* return gtk_spin_button_get_value (button);
* }
*
* void
* create_floating_spin_button (void)
* {
* GtkWidget *window, *button;
* GtkAdjustment *adjustment;
*
* adjustment = gtk_adjustment_new (2.500, 0.0, 5.0, 0.001, 0.1, 0.0);
*
* window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
* gtk_container_set_border_width (GTK_CONTAINER (window), 5);
*
* /&ast; creates the spinbutton, with three decimal places &ast;/
* button = gtk_spin_button_new (adjustment, 0.001, 3);
* gtk_container_add (GTK_CONTAINER (window), button);
*
* gtk_widget_show_all (window);
* }
* </programlisting>
* </example>
*/
struct _GtkSpinButtonPrivate
{
GtkSpinButtonUpdatePolicy update_policy;
GtkAdjustment *adjustment;
GdkWindow *panel;
guint32 timer;
gdouble climb_rate;
gdouble timer_step;
guint button : 2;
guint click_child : 2; /* valid: GTK_ARROW_UP=0, GTK_ARROW_DOWN=1 or 2=NONE/BOTH */
guint digits : 10;
guint in_child : 2;
guint need_timer : 1;
guint numeric : 1;
guint snap_to_ticks : 1;
guint timer_calls : 3;
guint wrap : 1;
};
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,
CHANGE_VALUE,
WRAPPED,
LAST_SIGNAL
};
static void gtk_spin_button_editable_init (GtkEditableInterface *iface);
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_destroy (GtkWidget *widget);
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_get_preferred_width (GtkWidget *widget,
gint *minimum,
gint *natural);
static void gtk_spin_button_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static gint gtk_spin_button_draw (GtkWidget *widget,
cairo_t *cr);
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_grab_notify (GtkWidget *widget,
gboolean was_grabbed);
static void gtk_spin_button_state_flags_changed (GtkWidget *widget,
GtkStateFlags previous_state);
static void gtk_spin_button_style_updated (GtkWidget *widget);
static void gtk_spin_button_draw_arrow (GtkSpinButton *spin_button,
GtkStyleContext *context,
cairo_t *cr,
GtkArrowType arrow_type);
static gboolean gtk_spin_button_timer (GtkSpinButton *spin_button);
static gboolean gtk_spin_button_stop_spinning (GtkSpinButton *spin);
static void gtk_spin_button_value_changed (GtkAdjustment *adjustment,
GtkSpinButton *spin_button);
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_get_text_area_size (GtkEntry *entry,
gint *x,
gint *y,
gint *width,
gint *height);
static void gtk_spin_button_snap (GtkSpinButton *spin_button,
gdouble val);
static void gtk_spin_button_insert_text (GtkEditable *editable,
const gchar *new_text,
gint new_text_length,
gint *position);
static void gtk_spin_button_real_spin (GtkSpinButton *spin_button,
gdouble step);
static void gtk_spin_button_real_change_value (GtkSpinButton *spin,
GtkScrollType scroll);
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_arrow_size (GtkSpinButton *spin_button);
static guint spinbutton_signals[LAST_SIGNAL] = {0};
#define NO_ARROW 2
G_DEFINE_TYPE_WITH_CODE (GtkSpinButton, gtk_spin_button, GTK_TYPE_ENTRY,
G_IMPLEMENT_INTERFACE (GTK_TYPE_EDITABLE,
gtk_spin_button_editable_init))
#define add_spin_binding(binding_set, keyval, mask, scroll) \
gtk_binding_entry_add_signal (binding_set, keyval, mask, \
"change_value", 1, \
GTK_TYPE_SCROLL_TYPE, scroll)
static void
gtk_spin_button_class_init (GtkSpinButtonClass *class)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (class);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
GtkEntryClass *entry_class = GTK_ENTRY_CLASS (class);
GtkBindingSet *binding_set;
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->destroy = gtk_spin_button_destroy;
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->get_preferred_width = gtk_spin_button_get_preferred_width;
widget_class->size_allocate = gtk_spin_button_size_allocate;
widget_class->draw = gtk_spin_button_draw;
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_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;
widget_class->grab_notify = gtk_spin_button_grab_notify;
widget_class->state_flags_changed = gtk_spin_button_state_flags_changed;
widget_class->style_updated = gtk_spin_button_style_updated;
entry_class->activate = gtk_spin_button_activate;
entry_class->get_text_area_size = gtk_spin_button_get_text_area_size;
class->input = NULL;
class->output = NULL;
class->change_value = gtk_spin_button_real_change_value;
g_object_class_install_property (gobject_class,
PROP_ADJUSTMENT,
g_param_spec_object ("adjustment",
P_("Adjustment"),
P_("The adjustment that holds the value of the spin button"),
GTK_TYPE_ADJUSTMENT,
GTK_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_CLIMB_RATE,
g_param_spec_double ("climb-rate",
P_("Climb Rate"),
P_("The acceleration rate when you hold down a button"),
0.0,
G_MAXDOUBLE,
0.0,
GTK_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_DIGITS,
g_param_spec_uint ("digits",
P_("Digits"),
P_("The number of decimal places to display"),
0,
MAX_DIGITS,
0,
GTK_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_SNAP_TO_TICKS,
g_param_spec_boolean ("snap-to-ticks",
P_("Snap to Ticks"),
P_("Whether erroneous values are automatically changed to a spin button's nearest step increment"),
FALSE,
GTK_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_NUMERIC,
g_param_spec_boolean ("numeric",
P_("Numeric"),
P_("Whether non-numeric characters should be ignored"),
FALSE,
GTK_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_WRAP,
g_param_spec_boolean ("wrap",
P_("Wrap"),
P_("Whether a spin button should wrap upon reaching its limits"),
FALSE,
GTK_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_UPDATE_POLICY,
g_param_spec_enum ("update-policy",
P_("Update Policy"),
P_("Whether the spin button should update always, or only when the value is legal"),
GTK_TYPE_SPIN_BUTTON_UPDATE_POLICY,
GTK_UPDATE_ALWAYS,
GTK_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_VALUE,
g_param_spec_double ("value",
P_("Value"),
P_("Reads the current value, or sets a new value"),
-G_MAXDOUBLE,
G_MAXDOUBLE,
0.0,
GTK_PARAM_READWRITE));
gtk_widget_class_install_style_property_parser (widget_class,
g_param_spec_enum ("shadow-type",
"Shadow Type",
P_("Style of bevel around the spin button"),
GTK_TYPE_SHADOW_TYPE,
GTK_SHADOW_IN,
GTK_PARAM_READABLE),
gtk_rc_property_parse_enum);
/**
* GtkSpinButton::input:
* @spin_button: the object on which the signal was emitted
* @new_value: (out) (type double): return location for the new value
*
* The ::input signal can be used to influence the conversion of
* the users input into a double value. The signal handler is
* expected to use gtk_entry_get_text() to retrieve the text of
* the entry and set @new_value to the new value.
*
* The default conversion uses g_strtod().
*
* Returns: %TRUE for a successful conversion, %FALSE if the input
* was not handled, and %GTK_INPUT_ERROR if the conversion failed.
*/
spinbutton_signals[INPUT] =
g_signal_new (I_("input"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkSpinButtonClass, input),
NULL, NULL,
_gtk_marshal_INT__POINTER,
G_TYPE_INT, 1,
G_TYPE_POINTER);
/**
* GtkSpinButton::output:
* @spin_button: the object which received the signal
*
* The ::output signal can be used to change to formatting
* of the value that is displayed in the spin buttons entry.
* |[
* /&ast; show leading zeros &ast;/
* static gboolean
* on_output (GtkSpinButton *spin,
* gpointer data)
* {
* GtkAdjustment *adjustment;
* gchar *text;
* int value;
*
* adjustment = gtk_spin_button_get_adjustment (spin);
* value = (int)gtk_adjustment_get_value (adjustment);
* text = g_strdup_printf ("%02d", value);
* gtk_entry_set_text (GTK_ENTRY (spin), text);
* g_free (text);
*
* return TRUE;
* }
* ]|
*
* Returns: %TRUE if the value has been displayed
*/
spinbutton_signals[OUTPUT] =
g_signal_new (I_("output"),
G_TYPE_FROM_CLASS (gobject_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] =
g_signal_new (I_("value-changed"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkSpinButtonClass, value_changed),
NULL, NULL,
_gtk_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/**
* GtkSpinButton::wrapped:
* @spinbutton: the object which received the signal
*
* The wrapped signal is emitted right after the spinbutton wraps
* from its maximum to minimum value or vice-versa.
*
* Since: 2.10
*/
spinbutton_signals[WRAPPED] =
g_signal_new (I_("wrapped"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkSpinButtonClass, wrapped),
NULL, NULL,
_gtk_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/* Action signals */
spinbutton_signals[CHANGE_VALUE] =
g_signal_new (I_("change-value"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkSpinButtonClass, change_value),
NULL, NULL,
_gtk_marshal_VOID__ENUM,
G_TYPE_NONE, 1,
GTK_TYPE_SCROLL_TYPE);
binding_set = gtk_binding_set_by_class (class);
add_spin_binding (binding_set, GDK_KEY_Up, 0, GTK_SCROLL_STEP_UP);
add_spin_binding (binding_set, GDK_KEY_KP_Up, 0, GTK_SCROLL_STEP_UP);
add_spin_binding (binding_set, GDK_KEY_Down, 0, GTK_SCROLL_STEP_DOWN);
add_spin_binding (binding_set, GDK_KEY_KP_Down, 0, GTK_SCROLL_STEP_DOWN);
add_spin_binding (binding_set, GDK_KEY_Page_Up, 0, GTK_SCROLL_PAGE_UP);
add_spin_binding (binding_set, GDK_KEY_Page_Down, 0, GTK_SCROLL_PAGE_DOWN);
add_spin_binding (binding_set, GDK_KEY_Page_Up, GDK_CONTROL_MASK, GTK_SCROLL_END);
add_spin_binding (binding_set, GDK_KEY_Page_Down, GDK_CONTROL_MASK, GTK_SCROLL_START);
g_type_class_add_private (class, sizeof (GtkSpinButtonPrivate));
}
static void
gtk_spin_button_editable_init (GtkEditableInterface *iface)
{
iface->insert_text = gtk_spin_button_insert_text;
}
static void
gtk_spin_button_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkSpinButton *spin_button = GTK_SPIN_BUTTON (object);
GtkSpinButtonPrivate *priv = spin_button->priv;
switch (prop_id)
{
GtkAdjustment *adjustment;
case PROP_ADJUSTMENT:
adjustment = GTK_ADJUSTMENT (g_value_get_object (value));
if (!adjustment)
adjustment = 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,
priv->adjustment,
g_value_get_double (value),
priv->digits);
break;
case PROP_DIGITS:
gtk_spin_button_configure (spin_button,
priv->adjustment,
priv->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:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_spin_button_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkSpinButton *spin_button = GTK_SPIN_BUTTON (object);
GtkSpinButtonPrivate *priv = spin_button->priv;
switch (prop_id)
{
case PROP_ADJUSTMENT:
g_value_set_object (value, priv->adjustment);
break;
case PROP_CLIMB_RATE:
g_value_set_double (value, priv->climb_rate);
break;
case PROP_DIGITS:
g_value_set_uint (value, priv->digits);
break;
case PROP_SNAP_TO_TICKS:
g_value_set_boolean (value, priv->snap_to_ticks);
break;
case PROP_NUMERIC:
g_value_set_boolean (value, priv->numeric);
break;
case PROP_WRAP:
g_value_set_boolean (value, priv->wrap);
break;
case PROP_UPDATE_POLICY:
g_value_set_enum (value, priv->update_policy);
break;
case PROP_VALUE:
g_value_set_double (value, gtk_adjustment_get_value (priv->adjustment));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_spin_button_init (GtkSpinButton *spin_button)
{
GtkSpinButtonPrivate *priv;
GtkStyleContext *context;
spin_button->priv = G_TYPE_INSTANCE_GET_PRIVATE (spin_button,
GTK_TYPE_SPIN_BUTTON,
GtkSpinButtonPrivate);
priv = spin_button->priv;
priv->adjustment = NULL;
priv->panel = NULL;
priv->timer = 0;
priv->climb_rate = 0.0;
priv->timer_step = 0.0;
priv->update_policy = GTK_UPDATE_ALWAYS;
priv->in_child = NO_ARROW;
priv->click_child = NO_ARROW;
priv->button = 0;
priv->need_timer = FALSE;
priv->timer_calls = 0;
priv->digits = 0;
priv->numeric = FALSE;
priv->wrap = FALSE;
priv->snap_to_ticks = FALSE;
gtk_spin_button_set_adjustment (spin_button,
gtk_adjustment_new (0, 0, 0, 0, 0, 0));
gtk_entry_set_alignment (GTK_ENTRY (spin_button), 0.5);
context = gtk_widget_get_style_context (GTK_WIDGET (spin_button));
gtk_style_context_add_class (context, GTK_STYLE_CLASS_SPINBUTTON);
}
static void
gtk_spin_button_finalize (GObject *object)
{
gtk_spin_button_set_adjustment (GTK_SPIN_BUTTON (object), NULL);
G_OBJECT_CLASS (gtk_spin_button_parent_class)->finalize (object);
}
static void
gtk_spin_button_destroy (GtkWidget *widget)
{
gtk_spin_button_stop_spinning (GTK_SPIN_BUTTON (widget));
GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->destroy (widget);
}
static void
gtk_spin_button_map (GtkWidget *widget)
{
GtkSpinButton *spin_button = GTK_SPIN_BUTTON (widget);
GtkSpinButtonPrivate *priv = spin_button->priv;
if (gtk_widget_get_realized (widget) && !gtk_widget_get_mapped (widget))
{
GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->map (widget);
gdk_window_show (priv->panel);
}
}
static void
gtk_spin_button_unmap (GtkWidget *widget)
{
GtkSpinButton *spin_button = GTK_SPIN_BUTTON (widget);
GtkSpinButtonPrivate *priv = spin_button->priv;
if (gtk_widget_get_mapped (widget))
{
gtk_spin_button_stop_spinning (GTK_SPIN_BUTTON (widget));
gdk_window_hide (priv->panel);
GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->unmap (widget);
}
}
static void
gtk_spin_button_realize (GtkWidget *widget)
{
GtkSpinButton *spin_button = GTK_SPIN_BUTTON (widget);
GtkSpinButtonPrivate *priv = spin_button->priv;
GtkStyleContext *context;
GtkStateFlags state;
GtkAllocation allocation;
GtkRequisition requisition;
GdkWindowAttr attributes;
gint attributes_mask;
gboolean return_val;
gint arrow_size;
GtkBorder padding;
arrow_size = spin_button_get_arrow_size (spin_button);
gtk_widget_get_preferred_size (widget, &requisition, NULL);
gtk_widget_get_allocation (widget, &allocation);
gtk_widget_set_events (widget, gtk_widget_get_events (widget) |
GDK_KEY_RELEASE_MASK);
GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->realize (widget);
attributes.window_type = GDK_WINDOW_CHILD;
attributes.wclass = GDK_INPUT_ONLY;
attributes.visual = gtk_widget_get_visual (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;
state = gtk_widget_get_state_flags (widget);
context = gtk_widget_get_style_context (widget);
gtk_style_context_get_padding (context, state, &padding);
attributes.x = allocation.x + allocation.width - arrow_size - (padding.left + padding.right);
attributes.y = allocation.y + (allocation.height - requisition.height) / 2;
attributes.width = arrow_size + padding.left + padding.right;
attributes.height = requisition.height;
priv->panel = gdk_window_new (gtk_widget_get_window (widget),
&attributes, attributes_mask);
gdk_window_set_user_data (priv->panel, widget);
return_val = FALSE;
g_signal_emit (spin_button, spinbutton_signals[OUTPUT], 0, &return_val);
if (return_val == FALSE)
gtk_spin_button_default_output (spin_button);
gtk_widget_queue_resize (GTK_WIDGET (spin_button));
}
static void
gtk_spin_button_unrealize (GtkWidget *widget)
{
GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
GtkSpinButtonPrivate *priv = spin->priv;
GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->unrealize (widget);
if (priv->panel)
{
gdk_window_set_user_data (priv->panel, NULL);
gdk_window_destroy (priv->panel);
priv->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_get_preferred_width (GtkWidget *widget,
gint *minimum,
gint *natural)
{
GtkSpinButton *spin_button = GTK_SPIN_BUTTON (widget);
GtkSpinButtonPrivate *priv = spin_button->priv;
GtkEntry *entry = GTK_ENTRY (widget);
GtkStyleContext *style_context;
GtkBorder padding;
gint arrow_size;
style_context = gtk_widget_get_style_context (widget);
arrow_size = spin_button_get_arrow_size (spin_button);
GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->get_preferred_width (widget, minimum, natural);
if (gtk_entry_get_width_chars (entry) < 0)
{
PangoContext *context;
const PangoFontDescription *font_desc;
PangoFontMetrics *metrics;
gint width;
gint w;
gint string_len;
gint max_string_len;
gint digit_width;
gboolean interior_focus;
gint focus_width;
gint xborder, yborder;
GtkBorder inner_border;
gtk_widget_style_get (widget,
"interior-focus", &interior_focus,
"focus-line-width", &focus_width,
NULL);
font_desc = gtk_style_context_get_font (style_context, 0);
context = gtk_widget_get_pango_context (widget);
metrics = pango_context_get_metrics (context, font_desc,
pango_context_get_language (context));
digit_width = pango_font_metrics_get_approximate_digit_width (metrics);
digit_width = PANGO_SCALE *
((digit_width + PANGO_SCALE - 1) / PANGO_SCALE);
pango_font_metrics_unref (metrics);
/* Get max of MIN_SPIN_BUTTON_WIDTH, size of upper, size of lower */
width = MIN_SPIN_BUTTON_WIDTH;
max_string_len = MAX (10, compute_double_length (1e9 * gtk_adjustment_get_step_increment (priv->adjustment),
priv->digits));
string_len = compute_double_length (gtk_adjustment_get_upper (priv->adjustment),
priv->digits);
w = PANGO_PIXELS (MIN (string_len, max_string_len) * digit_width);
width = MAX (width, w);
string_len = compute_double_length (gtk_adjustment_get_lower (priv->adjustment), priv->digits);
w = PANGO_PIXELS (MIN (string_len, max_string_len) * digit_width);
width = MAX (width, w);
_gtk_entry_get_borders (entry, &xborder, &yborder);
_gtk_entry_effective_inner_border (entry, &inner_border);
width += xborder * 2 + inner_border.left + inner_border.right;
*minimum = width;
*natural = width;
}
gtk_style_context_get_padding (style_context,
gtk_widget_get_state_flags (widget),
&padding);
*minimum += arrow_size + padding.left + padding.right;
*natural += arrow_size + padding.left + padding.right;
}
static void
gtk_spin_button_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
GtkSpinButtonPrivate *priv = spin->priv;
GtkAllocation panel_allocation;
GtkRequisition requisition;
GtkStyleContext *context;
GtkStateFlags state;
GtkBorder padding;
gint arrow_size;
gint panel_width;
arrow_size = spin_button_get_arrow_size (spin);
context = gtk_widget_get_style_context (widget);
state = gtk_widget_get_state_flags (widget);
gtk_style_context_get_padding (context, state, &padding);
panel_width = arrow_size + padding.left + padding.right;
gtk_widget_get_preferred_size (widget, &requisition, NULL);
gtk_widget_set_allocation (widget, allocation);
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
panel_allocation.x = allocation->x;
else
panel_allocation.x = allocation->x + allocation->width - panel_width;
panel_allocation.width = panel_width;
panel_allocation.height = MIN (requisition.height, allocation->height);
panel_allocation.y = allocation->y +
(allocation->height - requisition.height) / 2;
GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->size_allocate (widget, allocation);
if (gtk_widget_get_realized (widget))
{
gdk_window_move_resize (priv->panel,
panel_allocation.x,
panel_allocation.y,
panel_allocation.width,
panel_allocation.height);
}
gtk_widget_queue_draw (GTK_WIDGET (spin));
}
static gint
gtk_spin_button_draw (GtkWidget *widget,
cairo_t *cr)
{
GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
GtkSpinButtonPrivate *priv = spin->priv;
GtkStyleContext *context;
GtkStateFlags state = 0;
gboolean is_rtl;
is_rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
context = gtk_widget_get_style_context (widget);
cairo_save (cr);
GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->draw (widget, cr);
cairo_restore (cr);
state = gtk_widget_get_state_flags (widget);
gtk_style_context_save (context);
gtk_style_context_set_state (context, state);
gtk_style_context_remove_class (context, GTK_STYLE_CLASS_ENTRY);
if (is_rtl)
gtk_style_context_set_junction_sides (context, GTK_JUNCTION_RIGHT);
else
gtk_style_context_set_junction_sides (context, GTK_JUNCTION_LEFT);
gtk_cairo_transform_to_window (cr, widget, priv->panel);
if (gtk_entry_get_has_frame (GTK_ENTRY (widget)))
gtk_render_background (context, cr, 0, 0,
gdk_window_get_width (priv->panel),
gdk_window_get_height (priv->panel));
gtk_spin_button_draw_arrow (spin, context, cr, GTK_ARROW_UP);
gtk_spin_button_draw_arrow (spin, context, cr, GTK_ARROW_DOWN);
gtk_style_context_restore (context);
return FALSE;
}
static gboolean
spin_button_at_limit (GtkSpinButton *spin_button,
GtkArrowType arrow)
{
GtkSpinButtonPrivate *priv = spin_button->priv;
GtkArrowType effective_arrow;
if (priv->wrap)
return FALSE;
if (gtk_adjustment_get_step_increment (priv->adjustment) > 0)
effective_arrow = arrow;
else
effective_arrow = arrow == GTK_ARROW_UP ? GTK_ARROW_DOWN : GTK_ARROW_UP;
if (effective_arrow == GTK_ARROW_UP &&
(gtk_adjustment_get_upper (priv->adjustment) - gtk_adjustment_get_value (priv->adjustment) <= EPSILON))
return TRUE;
if (effective_arrow == GTK_ARROW_DOWN &&
(gtk_adjustment_get_value (priv->adjustment) - gtk_adjustment_get_lower (priv->adjustment) <= EPSILON))
return TRUE;
return FALSE;
}
static void
gtk_spin_button_draw_arrow (GtkSpinButton *spin_button,
GtkStyleContext *context,
cairo_t *cr,
GtkArrowType arrow_type)
{
GtkSpinButtonPrivate *priv;
GtkJunctionSides junction;
GtkStateFlags state;
GtkWidget *widget;
GtkBorder padding;
gdouble angle;
gint x;
gint y;
gint panel_height;
gint height;
gint width;
gint h, w;
g_return_if_fail (arrow_type == GTK_ARROW_UP || arrow_type == GTK_ARROW_DOWN);
gtk_style_context_save (context);
gtk_style_context_add_class (context, GTK_STYLE_CLASS_BUTTON);
priv = spin_button->priv;
widget = GTK_WIDGET (spin_button);
junction = gtk_style_context_get_junction_sides (context);
panel_height = gdk_window_get_height (priv->panel);
if (arrow_type == GTK_ARROW_UP)
{
x = 0;
y = 0;
height = panel_height / 2;
angle = 0;
junction |= GTK_JUNCTION_BOTTOM;
}
else
{
x = 0;
y = panel_height / 2;
height = (panel_height + 1) / 2;
angle = G_PI;
junction |= GTK_JUNCTION_TOP;
}
if (spin_button_at_limit (spin_button, arrow_type))
state = GTK_STATE_FLAG_INSENSITIVE;
else
{
if (priv->click_child == arrow_type)
state = GTK_STATE_ACTIVE;
else
{
if (priv->in_child == arrow_type &&
priv->click_child == NO_ARROW)
state = GTK_STATE_FLAG_PRELIGHT;
else
state = gtk_widget_get_state_flags (widget);
}
}
gtk_style_context_get_padding (context, state, &padding);
gtk_style_context_set_junction_sides (context, junction);
gtk_style_context_set_state (context, state);
width = spin_button_get_arrow_size (spin_button) + padding.left + padding.right;
gtk_render_background (context, cr, x, y, width, height);
gtk_render_frame (context, cr, x, y, width, height);
height = panel_height;
if (arrow_type == GTK_ARROW_DOWN)
{
y = height / 2;
height = height - y - 2;
}
else
{
y = 2;
height = height / 2 - 2;
}
width -= 3;
if (widget && gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
x = 2;
else
x = 1;
w = width / 2;
w -= w % 2 - 1; /* force odd */
h = (w + 1) / 2;
x += (width - w) / 2;
y += (height - h) / 2;
height = h;
width = w;
gtk_render_arrow (context, cr,
angle, x, y, width);
gtk_style_context_restore (context);
}
static gint
gtk_spin_button_enter_notify (GtkWidget *widget,
GdkEventCrossing *event)
{
GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
GtkSpinButtonPrivate *priv = spin->priv;
GtkRequisition requisition;
if (event->window == priv->panel)
{
GdkDevice *device;
gint x;
gint y;
device = gdk_event_get_device ((GdkEvent *) event);
gdk_window_get_device_position (priv->panel, device, &x, &y, NULL);
gtk_widget_get_preferred_size (widget, &requisition, NULL);
if (y <= requisition.height / 2)
priv->in_child = GTK_ARROW_UP;
else
priv->in_child = GTK_ARROW_DOWN;
gtk_widget_queue_draw (GTK_WIDGET (spin));
}
return GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->enter_notify_event (widget, event);
}
static gint
gtk_spin_button_leave_notify (GtkWidget *widget,
GdkEventCrossing *event)
{
GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
GtkSpinButtonPrivate *priv = spin->priv;
if (priv->in_child != NO_ARROW)
{
priv->in_child = NO_ARROW;
gtk_widget_queue_draw (GTK_WIDGET (spin));
}
return GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->leave_notify_event (widget, event);
}
static gint
gtk_spin_button_focus_out (GtkWidget *widget,
GdkEventFocus *event)
{
if (gtk_editable_get_editable (GTK_EDITABLE (widget)))
gtk_spin_button_update (GTK_SPIN_BUTTON (widget));
return GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->focus_out_event (widget, event);
}
static void
gtk_spin_button_grab_notify (GtkWidget *widget,
gboolean was_grabbed)
{
GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
if (!was_grabbed)
{
if (gtk_spin_button_stop_spinning (spin))
gtk_widget_queue_draw (GTK_WIDGET (spin));
}
}
static void
gtk_spin_button_state_flags_changed (GtkWidget *widget,
GtkStateFlags previous_state)
{
GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
if (!gtk_widget_is_sensitive (widget))
{
if (gtk_spin_button_stop_spinning (spin))
gtk_widget_queue_draw (GTK_WIDGET (spin));
}
}
static void
gtk_spin_button_style_updated (GtkWidget *widget)
{
GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
GtkSpinButtonPrivate *priv = spin->priv;
if (gtk_widget_get_realized (widget))
{
GtkStyleContext *context;
context = gtk_widget_get_style_context (widget);
gtk_style_context_set_background (context, priv->panel);
}
GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->style_updated (widget);
}
static gint
gtk_spin_button_scroll (GtkWidget *widget,
GdkEventScroll *event)
{
GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
GtkSpinButtonPrivate *priv = spin->priv;
if (event->direction == GDK_SCROLL_UP)
{
if (!gtk_widget_has_focus (widget))
gtk_widget_grab_focus (widget);
gtk_spin_button_real_spin (spin, gtk_adjustment_get_step_increment (priv->adjustment));
}
else if (event->direction == GDK_SCROLL_DOWN)
{
if (!gtk_widget_has_focus (widget))
gtk_widget_grab_focus (widget);
gtk_spin_button_real_spin (spin, -gtk_adjustment_get_step_increment (priv->adjustment));
}
else
return FALSE;
return TRUE;
}
static gboolean
gtk_spin_button_stop_spinning (GtkSpinButton *spin)
{
GtkSpinButtonPrivate *priv = spin->priv;
gboolean did_spin = FALSE;
if (priv->timer)
{
g_source_remove (priv->timer);
priv->timer = 0;
priv->need_timer = FALSE;
did_spin = TRUE;
}
priv->button = 0;
priv->timer_step = gtk_adjustment_get_step_increment (priv->adjustment);
priv->timer_calls = 0;
priv->click_child = NO_ARROW;
return did_spin;
}
static void
start_spinning (GtkSpinButton *spin,
GtkArrowType click_child,
gdouble step)
{
GtkSpinButtonPrivate *priv;
g_return_if_fail (click_child == GTK_ARROW_UP || click_child == GTK_ARROW_DOWN);
priv = spin->priv;
priv->click_child = click_child;
if (!priv->timer)
{
GtkSettings *settings = gtk_widget_get_settings (GTK_WIDGET (spin));
guint timeout;
g_object_get (settings, "gtk-timeout-initial", &timeout, NULL);
priv->timer_step = step;
priv->need_timer = TRUE;
priv->timer = gdk_threads_add_timeout (timeout,
(GSourceFunc) gtk_spin_button_timer,
(gpointer) spin);
}
gtk_spin_button_real_spin (spin, click_child == GTK_ARROW_UP ? step : -step);
gtk_widget_queue_draw (GTK_WIDGET (spin));
}
static gint
gtk_spin_button_button_press (GtkWidget *widget,
GdkEventButton *event)
{
GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
GtkSpinButtonPrivate *priv = spin->priv;
if (!priv->button)
{
if (event->window == priv->panel)
{
GtkRequisition requisition;
if (!gtk_widget_has_focus (widget))
gtk_widget_grab_focus (widget);
priv->button = event->button;
if (gtk_editable_get_editable (GTK_EDITABLE (widget)))
gtk_spin_button_update (spin);
gtk_widget_get_preferred_size (widget, &requisition, NULL);
if (event->y <= requisition.height / 2)
{
if (event->button == 1)
start_spinning (spin, GTK_ARROW_UP, gtk_adjustment_get_step_increment (priv->adjustment));
else if (event->button == 2)
start_spinning (spin, GTK_ARROW_UP, gtk_adjustment_get_page_increment (priv->adjustment));
else
priv->click_child = GTK_ARROW_UP;
}
else
{
if (event->button == 1)
start_spinning (spin, GTK_ARROW_DOWN, gtk_adjustment_get_step_increment (priv->adjustment));
else if (event->button == 2)
start_spinning (spin, GTK_ARROW_DOWN, gtk_adjustment_get_page_increment (priv->adjustment));
else
priv->click_child = GTK_ARROW_DOWN;
}
return TRUE;
}
else
return GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->button_press_event (widget, event);
}
return FALSE;
}
static gint
gtk_spin_button_button_release (GtkWidget *widget,
GdkEventButton *event)
{
GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
GtkSpinButtonPrivate *priv = spin->priv;
gint arrow_size;
arrow_size = spin_button_get_arrow_size (spin);
if (event->button == priv->button)
{
int click_child = priv->click_child;
gtk_spin_button_stop_spinning (spin);
if (event->button == 3)
{
GtkRequisition requisition;
GtkStyleContext *context;
GtkStateFlags state;
GtkBorder padding;
gtk_widget_get_preferred_size (widget, &requisition, NULL);
context = gtk_widget_get_style_context (widget);
state = gtk_widget_get_state_flags (widget);
gtk_style_context_get_padding (context, state, &padding);
if (event->y >= 0 && event->x >= 0 &&
event->y <= requisition.height &&
event->x <= arrow_size + padding.left + padding.right)
{
if (click_child == GTK_ARROW_UP &&
event->y <= requisition.height / 2)
{
gdouble diff;
diff = gtk_adjustment_get_upper (priv->adjustment) - gtk_adjustment_get_value (priv->adjustment);
if (diff > EPSILON)
gtk_spin_button_real_spin (spin, diff);
}
else if (click_child == GTK_ARROW_DOWN &&
event->y > requisition.height / 2)
{
gdouble diff;
diff = gtk_adjustment_get_value (priv->adjustment) - gtk_adjustment_get_lower (priv->adjustment);
if (diff > EPSILON)
gtk_spin_button_real_spin (spin, -diff);
}
}
}
gtk_widget_queue_draw (GTK_WIDGET (spin));
return TRUE;
}
else
return GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->button_release_event (widget, event);
}
static gint
gtk_spin_button_motion_notify (GtkWidget *widget,
GdkEventMotion *event)
{
GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
GtkSpinButtonPrivate *priv = spin->priv;
if (priv->button)
return FALSE;
if (event->window == priv->panel)
{
GtkRequisition requisition;
gint y = event->y;
gdk_event_request_motions (event);
gtk_widget_get_preferred_size (widget, &requisition, NULL);
if (y <= requisition.height / 2 &&
priv->in_child == GTK_ARROW_DOWN)
{
priv->in_child = GTK_ARROW_UP;
gtk_widget_queue_draw (GTK_WIDGET (spin));
}
else if (y > requisition.height / 2 &&
priv->in_child == GTK_ARROW_UP)
{
priv->in_child = GTK_ARROW_DOWN;
gtk_widget_queue_draw (GTK_WIDGET (spin));
}
return FALSE;
}
return GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->motion_notify_event (widget, event);
}
static gint
gtk_spin_button_timer (GtkSpinButton *spin_button)
{
GtkSpinButtonPrivate *priv = spin_button->priv;
gboolean retval = FALSE;
if (priv->timer)
{
if (priv->click_child == GTK_ARROW_UP)
gtk_spin_button_real_spin (spin_button, priv->timer_step);
else
gtk_spin_button_real_spin (spin_button, -priv->timer_step);
if (priv->need_timer)
{
GtkSettings *settings = gtk_widget_get_settings (GTK_WIDGET (spin_button));
guint timeout;
g_object_get (settings, "gtk-timeout-repeat", &timeout, NULL);
priv->need_timer = FALSE;
priv->timer = gdk_threads_add_timeout (timeout,
(GSourceFunc) gtk_spin_button_timer,
(gpointer) spin_button);
}
else
{
if (priv->climb_rate > 0.0 && priv->timer_step
< gtk_adjustment_get_page_increment (priv->adjustment))
{
if (priv->timer_calls < MAX_TIMER_CALLS)
priv->timer_calls++;
else
{
priv->timer_calls = 0;
priv->timer_step += priv->climb_rate;
}
}
retval = TRUE;
}
}
return retval;
}
static void
gtk_spin_button_value_changed (GtkAdjustment *adjustment,
GtkSpinButton *spin_button)
{
gboolean return_val;
g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
return_val = FALSE;
g_signal_emit (spin_button, spinbutton_signals[OUTPUT], 0, &return_val);
if (return_val == FALSE)
gtk_spin_button_default_output (spin_button);
g_signal_emit (spin_button, spinbutton_signals[VALUE_CHANGED], 0);
gtk_widget_queue_draw (GTK_WIDGET (spin_button));
g_object_notify (G_OBJECT (spin_button), "value");
}
static void
gtk_spin_button_real_change_value (GtkSpinButton *spin,
GtkScrollType scroll)
{
GtkSpinButtonPrivate *priv = spin->priv;
gdouble old_value;
/* When the key binding is activated, there may be an outstanding
* value, so we first have to commit what is currently written in
* the spin buttons text entry. See #106574
*/
gtk_spin_button_update (spin);
old_value = gtk_adjustment_get_value (priv->adjustment);
/* We don't test whether the entry is editable, since
* this key binding conceptually corresponds to changing
* the value with the buttons using the mouse, which
* we allow for non-editable spin buttons.
*/
switch (scroll)
{
case GTK_SCROLL_STEP_BACKWARD:
case GTK_SCROLL_STEP_DOWN:
case GTK_SCROLL_STEP_LEFT:
gtk_spin_button_real_spin (spin, -priv->timer_step);
if (priv->climb_rate > 0.0 && priv->timer_step
< gtk_adjustment_get_page_increment (priv->adjustment))
{
if (priv->timer_calls < MAX_TIMER_CALLS)
priv->timer_calls++;
else
{
priv->timer_calls = 0;
priv->timer_step += priv->climb_rate;
}
}
break;
case GTK_SCROLL_STEP_FORWARD:
case GTK_SCROLL_STEP_UP:
case GTK_SCROLL_STEP_RIGHT:
gtk_spin_button_real_spin (spin, priv->timer_step);
if (priv->climb_rate > 0.0 && priv->timer_step
< gtk_adjustment_get_page_increment (priv->adjustment))
{
if (priv->timer_calls < MAX_TIMER_CALLS)
priv->timer_calls++;
else
{
priv->timer_calls = 0;
priv->timer_step += priv->climb_rate;
}
}
break;
case GTK_SCROLL_PAGE_BACKWARD:
case GTK_SCROLL_PAGE_DOWN:
case GTK_SCROLL_PAGE_LEFT:
gtk_spin_button_real_spin (spin, -gtk_adjustment_get_page_increment (priv->adjustment));
break;
case GTK_SCROLL_PAGE_FORWARD:
case GTK_SCROLL_PAGE_UP:
case GTK_SCROLL_PAGE_RIGHT:
gtk_spin_button_real_spin (spin, gtk_adjustment_get_page_increment (priv->adjustment));
break;
case GTK_SCROLL_START:
{
gdouble diff = gtk_adjustment_get_value (priv->adjustment) - gtk_adjustment_get_lower (priv->adjustment);
if (diff > EPSILON)
gtk_spin_button_real_spin (spin, -diff);
break;
}
case GTK_SCROLL_END:
{
gdouble diff = gtk_adjustment_get_upper (priv->adjustment) - gtk_adjustment_get_value (priv->adjustment);
if (diff > EPSILON)
gtk_spin_button_real_spin (spin, diff);
break;
}
default:
g_warning ("Invalid scroll type %d for GtkSpinButton::change-value", scroll);
break;
}
gtk_spin_button_update (spin);
if (gtk_adjustment_get_value (priv->adjustment) == old_value)
gtk_widget_error_bell (GTK_WIDGET (spin));
}
static gint
gtk_spin_button_key_release (GtkWidget *widget,
GdkEventKey *event)
{
GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
GtkSpinButtonPrivate *priv = spin->priv;
/* We only get a release at the end of a key repeat run, so reset the timer_step */
priv->timer_step = gtk_adjustment_get_step_increment (priv->adjustment);
priv->timer_calls = 0;
return TRUE;
}
static void
gtk_spin_button_snap (GtkSpinButton *spin_button,
gdouble val)
{
GtkSpinButtonPrivate *priv = spin_button->priv;
gdouble inc;
gdouble tmp;
inc = gtk_adjustment_get_step_increment (priv->adjustment);
if (inc == 0)
return;
tmp = (val - gtk_adjustment_get_lower (priv->adjustment)) / inc;
if (tmp - floor (tmp) < ceil (tmp) - tmp)
val = gtk_adjustment_get_lower (priv->adjustment) + floor (tmp) * inc;
else
val = gtk_adjustment_get_lower (priv->adjustment) + ceil (tmp) * inc;
gtk_spin_button_set_value (spin_button, val);
}
static void
gtk_spin_button_activate (GtkEntry *entry)
{
if (gtk_editable_get_editable (GTK_EDITABLE (entry)))
gtk_spin_button_update (GTK_SPIN_BUTTON (entry));
/* Chain up so that entry->activates_default is honored */
GTK_ENTRY_CLASS (gtk_spin_button_parent_class)->activate (entry);
}
static void
gtk_spin_button_get_text_area_size (GtkEntry *entry,
gint *x,
gint *y,
gint *width,
gint *height)
{
GtkStyleContext *context;
GtkStateFlags state;
GtkWidget *widget;
GtkBorder padding;
gint arrow_size;
gint panel_width;
GTK_ENTRY_CLASS (gtk_spin_button_parent_class)->get_text_area_size (entry, x, y, width, height);
widget = GTK_WIDGET (entry);
state = gtk_widget_get_state_flags (widget);
context = gtk_widget_get_style_context (widget);
gtk_style_context_get_padding (context, state, &padding);
arrow_size = spin_button_get_arrow_size (GTK_SPIN_BUTTON (entry));
panel_width = arrow_size + padding.left + padding.right;
if (width)
*width -= panel_width;
if (gtk_widget_get_direction (GTK_WIDGET (entry)) == GTK_TEXT_DIR_RTL && x)
*x += panel_width;
}
static void
gtk_spin_button_insert_text (GtkEditable *editable,
const gchar *new_text,
gint new_text_length,
gint *position)
{
GtkEntry *entry = GTK_ENTRY (editable);
GtkSpinButton *spin = GTK_SPIN_BUTTON (editable);
GtkSpinButtonPrivate *priv = spin->priv;
GtkEditableInterface *parent_editable_iface;
parent_editable_iface = g_type_interface_peek (gtk_spin_button_parent_class,
GTK_TYPE_EDITABLE);
if (priv->numeric)
{
struct lconv *lc;
gboolean sign;
gint dotpos = -1;
gint i;
guint32 pos_sign;
guint32 neg_sign;
gint entry_length;
const gchar *entry_text;
entry_length = gtk_entry_get_text_length (entry);
entry_text = gtk_entry_get_text (entry);
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 = '+';
#ifdef G_OS_WIN32
/* Workaround for bug caused by some Windows application messing
* up the positive sign of the current locale, more specifically
* HKEY_CURRENT_USER\Control Panel\International\sPositiveSign.
* See bug #330743 and for instance
* http://www.msnewsgroups.net/group/microsoft.public.dotnet.languages.csharp/topic36024.aspx
*
* I don't know if the positive sign always gets bogusly set to
* a digit when the above Registry value is corrupted as
* described. (In my test case, it got set to "8", and in the
* bug report above it presumably was set ot "0".) Probably it
* might get set to almost anything? So how to distinguish a
* bogus value from some correct one for some locale? That is
* probably hard, but at least we should filter out the
* digits...
*/
if (pos_sign >= '0' && pos_sign <= '9')
pos_sign = '+';
#endif
for (sign=0, i=0; i<entry_length; i++)
if ((entry_text[i] == neg_sign) ||
(entry_text[i] == pos_sign))
{
sign = 1;
break;
}
if (sign && !(*position))
return;
for (dotpos=-1, i=0; i<entry_length; i++)
if (entry_text[i] == *(lc->decimal_point))
{
dotpos = i;
break;
}
if (dotpos > -1 && *position > dotpos &&
(gint)priv->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 (!priv->digits || dotpos > -1 ||
(new_text_length - 1 - i + entry_length
- *position > (gint)priv->digits))
return;
dotpos = *position + i;
}
else if (new_text[i] < 0x30 || new_text[i] > 0x39)
return;
}
}
parent_editable_iface->insert_text (editable, new_text,
new_text_length, position);
}
static void
gtk_spin_button_real_spin (GtkSpinButton *spin_button,
gdouble increment)
{
GtkSpinButtonPrivate *priv = spin_button->priv;
GtkAdjustment *adjustment;
gdouble new_value = 0.0;
gboolean wrapped = FALSE;
adjustment = priv->adjustment;
new_value = gtk_adjustment_get_value (adjustment) + increment;
if (increment > 0)
{
if (priv->wrap)
{
if (fabs (gtk_adjustment_get_value (adjustment) - gtk_adjustment_get_upper (adjustment)) < EPSILON)
{
new_value = gtk_adjustment_get_lower (adjustment);
wrapped = TRUE;
}
else if (new_value > gtk_adjustment_get_upper (adjustment))
new_value = gtk_adjustment_get_upper (adjustment);
}
else
new_value = MIN (new_value, gtk_adjustment_get_upper (adjustment));
}
else if (increment < 0)
{
if (priv->wrap)
{
if (fabs (gtk_adjustment_get_value (adjustment) - gtk_adjustment_get_lower (adjustment)) < EPSILON)
{
new_value = gtk_adjustment_get_upper (adjustment);
wrapped = TRUE;
}
else if (new_value < gtk_adjustment_get_lower (adjustment))
new_value = gtk_adjustment_get_lower (adjustment);
}
else
new_value = MAX (new_value, gtk_adjustment_get_lower (adjustment));
}
if (fabs (new_value - gtk_adjustment_get_value (adjustment)) > EPSILON)
gtk_adjustment_set_value (adjustment, new_value);
if (wrapped)
g_signal_emit (spin_button, spinbutton_signals[WRAPPED], 0);
gtk_widget_queue_draw (GTK_WIDGET (spin_button));
}
static gint
gtk_spin_button_default_input (GtkSpinButton *spin_button,
gdouble *new_val)
{
gchar *err = NULL;
*new_val = g_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)
{
GtkSpinButtonPrivate *priv = spin_button->priv;
gchar *buf = g_strdup_printf ("%0.*f", priv->digits, gtk_adjustment_get_value (priv->adjustment));
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 ***
***********************************************************
***********************************************************/
/**
* gtk_spin_button_configure:
* @spin_button: a #GtkSpinButton
* @adjustment: (allow-none): a #GtkAdjustment
* @climb_rate: the new climb rate
* @digits: the number of decimal places to display in the spin button
*
* Changes the properties of an existing spin button. The adjustment,
* climb rate, and number of decimal places are all changed accordingly,
* after this function call.
*/
void
gtk_spin_button_configure (GtkSpinButton *spin_button,
GtkAdjustment *adjustment,
gdouble climb_rate,
guint digits)
{
GtkSpinButtonPrivate *priv;
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
priv = spin_button->priv;
if (adjustment)
gtk_spin_button_set_adjustment (spin_button, adjustment);
else
adjustment = priv->adjustment;
g_object_freeze_notify (G_OBJECT (spin_button));
if (priv->digits != digits)
{
priv->digits = digits;
g_object_notify (G_OBJECT (spin_button), "digits");
}
if (priv->climb_rate != climb_rate)
{
priv->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);
}
/**
* gtk_spin_button_new:
* @adjustment: (allow-none): the #GtkAdjustment object that this spin
* button should use, or %NULL
* @climb_rate: specifies how much the spin button changes when an arrow
* is clicked on
* @digits: the number of decimal places to display
*
* Creates a new #GtkSpinButton.
*
* Returns: The new spin button as a #GtkWidget
*/
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 = g_object_new (GTK_TYPE_SPIN_BUTTON, NULL);
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.
*
* Note that the way in which the precision is derived works best if @step
* is a power of ten. If the resulting precision is not suitable for your
* needs, use gtk_spin_button_set_digits() to correct it.
*
* Return value: The new spin button as a #GtkWidget
*/
GtkWidget *
gtk_spin_button_new_with_range (gdouble min,
gdouble max,
gdouble step)
{
GtkAdjustment *adjustment;
GtkSpinButton *spin;
gint digits;
g_return_val_if_fail (min <= max, NULL);
g_return_val_if_fail (step != 0.0, NULL);
spin = g_object_new (GTK_TYPE_SPIN_BUTTON, NULL);
adjustment = gtk_adjustment_new (min, min, max, step, 10 * step, 0);
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, adjustment, 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 = GTK_SPIN_BUTTON (data);
GtkSpinButtonPrivate *priv = spin_button->priv;
priv->timer_step = gtk_adjustment_get_step_increment (priv->adjustment);
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)
{
GtkSpinButtonPrivate *priv;
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
priv = spin_button->priv;
if (priv->adjustment != adjustment)
{
if (priv->adjustment)
{
g_signal_handlers_disconnect_by_func (priv->adjustment,
gtk_spin_button_value_changed,
spin_button);
g_signal_handlers_disconnect_by_func (priv->adjustment,
adjustment_changed_cb,
spin_button);
g_object_unref (priv->adjustment);
}
priv->adjustment = adjustment;
if (adjustment)
{
g_object_ref_sink (adjustment);
g_signal_connect (adjustment, "value-changed",
G_CALLBACK (gtk_spin_button_value_changed),
spin_button);
g_signal_connect (adjustment, "changed",
G_CALLBACK (adjustment_changed_cb),
spin_button);
priv->timer_step = gtk_adjustment_get_step_increment (priv->adjustment);
}
gtk_widget_queue_resize (GTK_WIDGET (spin_button));
}
g_object_notify (G_OBJECT (spin_button), "adjustment");
}
/**
* gtk_spin_button_get_adjustment:
* @spin_button: a #GtkSpinButton
*
* Get the adjustment associated with a #GtkSpinButton
*
* Return value: (transfer none): 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->priv->adjustment;
}
/**
* gtk_spin_button_set_digits:
* @spin_button: a #GtkSpinButton
* @digits: the number of digits after the decimal point 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)
{
GtkSpinButtonPrivate *priv;
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
priv = spin_button->priv;
if (priv->digits != digits)
{
priv->digits = digits;
gtk_spin_button_value_changed (priv->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->priv->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)
{
GtkSpinButtonPrivate *priv;
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
priv = spin_button->priv;
gtk_adjustment_configure (priv->adjustment,
gtk_adjustment_get_value (priv->adjustment),
gtk_adjustment_get_lower (priv->adjustment),
gtk_adjustment_get_upper (priv->adjustment),
step,
page,
gtk_adjustment_get_page_size (priv->adjustment));
}
/**
* gtk_spin_button_get_increments:
* @spin_button: a #GtkSpinButton
* @step: (out) (allow-none): location to store step increment, or %NULL
* @page: (out) (allow-none): 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)
{
GtkSpinButtonPrivate *priv;
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
priv = spin_button->priv;
if (step)
*step = gtk_adjustment_get_step_increment (priv->adjustment);
if (page)
*page = gtk_adjustment_get_page_increment (priv->adjustment);
}
/**
* 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)
{
GtkAdjustment *adjustment;
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
adjustment = spin_button->priv->adjustment;
gtk_adjustment_configure (adjustment,
CLAMP (gtk_adjustment_get_value (adjustment), min, max),
min,
max,
gtk_adjustment_get_step_increment (adjustment),
gtk_adjustment_get_page_increment (adjustment),
gtk_adjustment_get_page_size (adjustment));
}
/**
* gtk_spin_button_get_range:
* @spin_button: a #GtkSpinButton
* @min: (out) (allow-none): location to store minimum allowed value, or %NULL
* @max: (out) (allow-none): 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)
{
GtkSpinButtonPrivate *priv;
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
priv = spin_button->priv;
if (min)
*min = gtk_adjustment_get_lower (priv->adjustment);
if (max)
*max = gtk_adjustment_get_upper (priv->adjustment);
}
/**
* 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 gtk_adjustment_get_value (spin_button->priv->adjustment);
}
/**
* 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)
{
GtkSpinButtonPrivate *priv;
gdouble val;
g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spin_button), 0);
priv = spin_button->priv;
val = gtk_adjustment_get_value (priv->adjustment);
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
*
* Sets the value of @spin_button.
*/
void
gtk_spin_button_set_value (GtkSpinButton *spin_button,
gdouble value)
{
GtkSpinButtonPrivate *priv;
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
priv = spin_button->priv;
if (fabs (value - gtk_adjustment_get_value (priv->adjustment)) > EPSILON)
gtk_adjustment_set_value (priv->adjustment, value);
else
{
gint return_val = FALSE;
g_signal_emit (spin_button, spinbutton_signals[OUTPUT], 0, &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 wether 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)
{
GtkSpinButtonPrivate *priv;
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
priv = spin_button->priv;
if (priv->update_policy != policy)
{
priv->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->priv->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)
{
GtkSpinButtonPrivate *priv;
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
priv = spin_button->priv;
numeric = numeric != FALSE;
if (priv->numeric != numeric)
{
priv->numeric = numeric;
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->priv->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)
{
GtkSpinButtonPrivate *priv;
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
priv = spin_button->priv;
wrap = wrap != FALSE;
if (priv->wrap != wrap)
{
priv->wrap = wrap;
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->priv->wrap;
}
static gint
spin_button_get_arrow_size (GtkSpinButton *spin_button)
{
const PangoFontDescription *font_desc;
GtkStyleContext *context;
gint size;
gint arrow_size;
/* FIXME: use getter */
context = gtk_widget_get_style_context (GTK_WIDGET (spin_button));
font_desc = gtk_style_context_get_font (context, 0);
size = pango_font_description_get_size (font_desc);
arrow_size = MAX (PANGO_PIXELS (size), MIN_ARROW_WIDTH);
return arrow_size - arrow_size % 2; /* force even */
}
/**
* 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)
{
GtkSpinButtonPrivate *priv;
guint new_val;
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
priv = spin_button->priv;
new_val = (snap_to_ticks != 0);
if (new_val != priv->snap_to_ticks)
{
priv->snap_to_ticks = new_val;
if (new_val && gtk_editable_get_editable (GTK_EDITABLE (spin_button)))
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->priv->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)
{
GtkSpinButtonPrivate *priv;
GtkAdjustment *adjustment;
gdouble diff;
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
priv = spin_button->priv;
adjustment = priv->adjustment;
/* for compatibility with the 1.0.x version of this function */
if (increment != 0 && increment != gtk_adjustment_get_step_increment (adjustment) &&
(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, gtk_adjustment_get_step_increment (adjustment));
break;
case GTK_SPIN_STEP_BACKWARD:
gtk_spin_button_real_spin (spin_button, -gtk_adjustment_get_step_increment (adjustment));
break;
case GTK_SPIN_PAGE_FORWARD:
gtk_spin_button_real_spin (spin_button, gtk_adjustment_get_page_increment (adjustment));
break;
case GTK_SPIN_PAGE_BACKWARD:
gtk_spin_button_real_spin (spin_button, -gtk_adjustment_get_page_increment (adjustment));
break;
case GTK_SPIN_HOME:
diff = gtk_adjustment_get_value (adjustment) - gtk_adjustment_get_lower (adjustment);
if (diff > EPSILON)
gtk_spin_button_real_spin (spin_button, -diff);
break;
case GTK_SPIN_END:
diff = gtk_adjustment_get_upper (adjustment) - gtk_adjustment_get_value (adjustment);
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)
{
GtkSpinButtonPrivate *priv;
gdouble val;
gint error = 0;
gint return_val;
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
priv = spin_button->priv;
return_val = FALSE;
g_signal_emit (spin_button, spinbutton_signals[INPUT], 0, &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;
gtk_widget_queue_draw (GTK_WIDGET (spin_button));
if (priv->update_policy == GTK_UPDATE_ALWAYS)
{
if (val < gtk_adjustment_get_lower (priv->adjustment))
val = gtk_adjustment_get_lower (priv->adjustment);
else if (val > gtk_adjustment_get_upper (priv->adjustment))
val = gtk_adjustment_get_upper (priv->adjustment);
}
else if ((priv->update_policy == GTK_UPDATE_IF_VALID) &&
(error ||
val < gtk_adjustment_get_lower (priv->adjustment) ||
val > gtk_adjustment_get_upper (priv->adjustment)))
{
gtk_spin_button_value_changed (priv->adjustment, spin_button);
return;
}
if (priv->snap_to_ticks)
gtk_spin_button_snap (spin_button, val);
else
gtk_spin_button_set_value (spin_button, val);
}
GdkWindow *
_gtk_spin_button_get_panel (GtkSpinButton *spin_button)
{
return spin_button->priv->panel;
}
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