AuroraMiddleware/gtk2
1
0
Fork 0
forked from AuroraMiddleware/gtk
Code Issues Pull Requests Projects Releases Wiki Activity
b12992c1cb
gtk2/gtk/gtkspinbutton.c
Matthias Clasen aa4c0bf272 spinbutton: Hide the buttons from accessibility 
The buttons here are not really buttons (the action
is not tied to the "clicked" signal), so triggering
the buttons via a11y does not have the expected effect.

And we expose the Value interface that ATs can use
to set the value.
2020-10-15 16:32:55 -04:00

2356 lines
76 KiB
C
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

/* 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, see <http://www.gnu.org/licenses/>.
*/
/*
* 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 "gtkspinbutton.h"
#include "gtkspinbuttonprivate.h"
#include "gtkaccessibleprivate.h"
#include "gtkadjustment.h"
#include "gtkbox.h"
#include "gtkbutton.h"
#include "gtkbuttonprivate.h"
#include "gtkcssstylepropertyprivate.h"
#include "gtkeditable.h"
#include "gtkcelleditable.h"
#include "gtkimage.h"
#include "gtktext.h"
#include "gtkeventcontrollerkey.h"
#include "gtkeventcontrollerfocus.h"
#include "gtkeventcontrollermotion.h"
#include "gtkeventcontrollerscroll.h"
#include "gtkgestureclick.h"
#include "gtkgestureswipe.h"
#include "gtkicontheme.h"
#include "gtkintl.h"
#include "gtkmarshalers.h"
#include "gtkorientable.h"
#include "gtkprivate.h"
#include "gtksettings.h"
#include "gtkstylecontextprivate.h"
#include "gtktypebuiltins.h"
#include "gtkwidgetprivate.h"
#include "gtkboxlayout.h"
#include "gtktextprivate.h"
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <string.h>
#include <locale.h>
#define MAX_TIMER_CALLS 5
#define EPSILON 1e-10
#define MAX_DIGITS 20
#define TIMEOUT_INITIAL 500
#define TIMEOUT_REPEAT 50
/**
* 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.
*
* Note that GtkSpinButton will by default make its entry large enough to
* accommodate the lower and upper bounds of the adjustment. If this is
* not desired, the automatic sizing can be turned off by explicitly
* setting #GtkEditable::width-chars to a value != -1.
*
* ## Using a GtkSpinButton to get an integer
*
* |[<!-- language="C" -->
* // Provides a function to retrieve an integer value from a GtkSpinButton
* // and creates a spin button to model percentage values.
*
* int
* 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 ();
*
* // creates the spinbutton, with no decimal places
* button = gtk_spin_button_new (adjustment, 1.0, 0);
* gtk_window_set_child (GTK_WINDOW (window), button);
*
* gtk_widget_show (window);
* }
* ]|
*
* ## Using a GtkSpinButton to get a floating point value
*
* |[<!-- language="C" -->
* // Provides a function to retrieve a floating point value from a
* // GtkSpinButton, and creates a high precision spin button.
*
* float
* 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 ();
*
* // creates the spinbutton, with three decimal places
* button = gtk_spin_button_new (adjustment, 0.001, 3);
* gtk_window_set_child (GTK_WINDOW (window), button);
*
* gtk_widget_show (window);
* }
* ]|
*
* # CSS nodes
*
* |[<!-- language="plain" -->
* spinbutton.horizontal
* ├── text
* │ ├── undershoot.left
* │ ╰── undershoot.right
* ├── button.down
* ╰── button.up
* ]|
*
* |[<!-- language="plain" -->
* spinbutton.vertical
* ├── button.up
* ├── text
* │ ├── undershoot.left
* │ ╰── undershoot.right
* ╰── button.down
* ]|
*
* GtkSpinButtons main CSS node has the name spinbutton. It creates subnodes
* for the entry and the two buttons, with these names. The button nodes have
* the style classes .up and .down. The GtkText subnodes (if present) are put
* below the text node. The orientation of the spin button is reflected in
* the .vertical or .horizontal style class on the main node.
*
* # Accessiblity
*
* GtkSpinButton uses the #GTK_ACCESSIBLE_ROLE_SPIN_BUTTON role.
*/
typedef struct _GtkSpinButton GtkSpinButton;
typedef struct _GtkSpinButtonClass GtkSpinButtonClass;
struct _GtkSpinButton
{
GtkWidget parent_instance;
GtkAdjustment *adjustment;
GtkWidget *entry;
GtkWidget *up_button;
GtkWidget *down_button;
GtkWidget *click_child;
guint32 timer;
GtkSpinButtonUpdatePolicy update_policy;
double climb_rate;
double timer_step;
int width_chars;
GtkOrientation orientation;
guint digits : 10;
guint need_timer : 1;
guint numeric : 1;
guint snap_to_ticks : 1;
guint timer_calls : 3;
guint wrap : 1;
guint editing_canceled : 1;
};
struct _GtkSpinButtonClass
{
GtkWidgetClass parent_class;
int (*input) (GtkSpinButton *spin_button,
double *new_value);
int (*output) (GtkSpinButton *spin_button);
void (*value_changed) (GtkSpinButton *spin_button);
/* Action signals for keybindings, do not connect to these */
void (*change_value) (GtkSpinButton *spin_button,
GtkScrollType scroll);
void (*wrapped) (GtkSpinButton *spin_button);
};
enum {
PROP_0,
PROP_ADJUSTMENT,
PROP_CLIMB_RATE,
PROP_DIGITS,
PROP_SNAP_TO_TICKS,
PROP_NUMERIC,
PROP_WRAP,
PROP_UPDATE_POLICY,
PROP_VALUE,
NUM_SPINBUTTON_PROPS,
PROP_ORIENTATION = NUM_SPINBUTTON_PROPS,
PROP_EDITING_CANCELED
};
/* 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_cell_editable_init (GtkCellEditableIface *iface);
static void gtk_spin_button_finalize (GObject *object);
static void gtk_spin_button_dispose (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_realize (GtkWidget *widget);
static void gtk_spin_button_state_flags_changed (GtkWidget *widget,
GtkStateFlags previous_state);
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 void gtk_spin_button_activate (GtkText *entry,
gpointer user_data);
static void gtk_spin_button_unset_adjustment (GtkSpinButton *spin_button);
static void gtk_spin_button_set_orientation (GtkSpinButton *spin_button,
GtkOrientation orientation);
static void gtk_spin_button_snap (GtkSpinButton *spin_button,
double val);
static void gtk_spin_button_insert_text (GtkEditable *editable,
const char *new_text,
int new_text_length,
int *position);
static void gtk_spin_button_real_spin (GtkSpinButton *spin_button,
double step);
static void gtk_spin_button_real_change_value (GtkSpinButton *spin,
GtkScrollType scroll);
static int gtk_spin_button_default_input (GtkSpinButton *spin_button,
double *new_val);
static void gtk_spin_button_default_output (GtkSpinButton *spin_button);
static void gtk_spin_button_update_width_chars (GtkSpinButton *spin_button);
static void gtk_spin_button_accessible_init (GtkAccessibleInterface *iface);
static guint spinbutton_signals[LAST_SIGNAL] = {0};
static GParamSpec *spinbutton_props[NUM_SPINBUTTON_PROPS] = {NULL, };
G_DEFINE_TYPE_WITH_CODE (GtkSpinButton, gtk_spin_button, GTK_TYPE_WIDGET,
G_IMPLEMENT_INTERFACE (GTK_TYPE_ORIENTABLE, NULL)
G_IMPLEMENT_INTERFACE (GTK_TYPE_ACCESSIBLE,
gtk_spin_button_accessible_init)
G_IMPLEMENT_INTERFACE (GTK_TYPE_EDITABLE,
gtk_spin_button_editable_init)
G_IMPLEMENT_INTERFACE (GTK_TYPE_CELL_EDITABLE,
gtk_spin_button_cell_editable_init))
#define add_spin_binding(widget_class, keyval, mask, scroll) \
gtk_widget_class_add_binding_signal (widget_class, keyval, mask, \
"change-value", \
"(i)", scroll)
static gboolean
gtk_spin_button_grab_focus (GtkWidget *widget)
{
GtkSpinButton *spin_button = GTK_SPIN_BUTTON (widget);
return gtk_widget_grab_focus (spin_button->entry);
}
static gboolean
gtk_spin_button_mnemonic_activate (GtkWidget *widget,
gboolean group_cycling)
{
GtkSpinButton *spin_button = GTK_SPIN_BUTTON (widget);
return gtk_widget_grab_focus (spin_button->entry);
}
static void
gtk_spin_button_class_init (GtkSpinButtonClass *class)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (class);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
gobject_class->finalize = gtk_spin_button_finalize;
gobject_class->dispose = gtk_spin_button_dispose;
gobject_class->set_property = gtk_spin_button_set_property;
gobject_class->get_property = gtk_spin_button_get_property;
widget_class->realize = gtk_spin_button_realize;
widget_class->state_flags_changed = gtk_spin_button_state_flags_changed;
widget_class->mnemonic_activate = gtk_spin_button_mnemonic_activate;
widget_class->grab_focus = gtk_spin_button_grab_focus;
widget_class->focus = gtk_widget_focus_child;
class->input = NULL;
class->output = NULL;
class->change_value = gtk_spin_button_real_change_value;
spinbutton_props[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);
spinbutton_props[PROP_CLIMB_RATE] =
g_param_spec_double ("climb-rate",
P_("Climb Rate"),
P_("The acceleration rate when you hold down a button or key"),
0.0, G_MAXDOUBLE, 0.0,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
spinbutton_props[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_PARAM_EXPLICIT_NOTIFY);
spinbutton_props[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_PARAM_EXPLICIT_NOTIFY);
spinbutton_props[PROP_NUMERIC] =
g_param_spec_boolean ("numeric",
P_("Numeric"),
P_("Whether non-numeric characters should be ignored"),
FALSE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
spinbutton_props[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_PARAM_EXPLICIT_NOTIFY);
spinbutton_props[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_PARAM_EXPLICIT_NOTIFY);
spinbutton_props[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|G_PARAM_EXPLICIT_NOTIFY);
g_object_class_install_properties (gobject_class, NUM_SPINBUTTON_PROPS, spinbutton_props);
g_object_class_override_property (gobject_class, PROP_ORIENTATION, "orientation");
g_object_class_override_property (gobject_class, PROP_EDITING_CANCELED, "editing-canceled");
gtk_editable_install_properties (gobject_class, PROP_EDITING_CANCELED + 1);
/**
* 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_editable_get_text() to retrieve the text of
* the spinbutton 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 on which the signal was emitted
*
* The ::output signal can be used to change to formatting
* of the value that is displayed in the spin buttons entry.
* |[<!-- language="C" -->
* // show leading zeros
* static gboolean
* on_output (GtkSpinButton *spin,
* gpointer data)
* {
* GtkAdjustment *adjustment;
* char *text;
* int value;
*
* adjustment = gtk_spin_button_get_adjustment (spin);
* value = (int)gtk_adjustment_get_value (adjustment);
* text = g_strdup_printf ("%02d", value);
* gtk_spin_button_set_text (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);
/**
* GtkSpinButton::value-changed:
* @spin_button: the object on which the signal was emitted
*
* The ::value-changed signal is emitted when the value represented by
* @spinbutton changes. Also see the #GtkSpinButton::output signal.
*/
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,
NULL,
G_TYPE_NONE, 0);
/**
* GtkSpinButton::wrapped:
* @spin_button: the object on which the signal was emitted
*
* The ::wrapped signal is emitted right after the spinbutton wraps
* from its maximum to minimum value or vice-versa.
*/
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,
NULL,
G_TYPE_NONE, 0);
/* Action signals */
/**
* GtkSpinButton::change-value:
* @spin_button: the object on which the signal was emitted
* @scroll: a #GtkScrollType to specify the speed and amount of change
*
* The ::change-value signal is a [keybinding signal][GtkBindingSignal]
* which gets emitted when the user initiates a value change.
*
* Applications should not connect to it, but may emit it with
* g_signal_emit_by_name() if they need to control the cursor
* programmatically.
*
* The default bindings for this signal are Up/Down and PageUp and/PageDown.
*/
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,
NULL,
G_TYPE_NONE, 1,
GTK_TYPE_SCROLL_TYPE);
add_spin_binding (widget_class, GDK_KEY_Up, 0, GTK_SCROLL_STEP_UP);
add_spin_binding (widget_class, GDK_KEY_KP_Up, 0, GTK_SCROLL_STEP_UP);
add_spin_binding (widget_class, GDK_KEY_Down, 0, GTK_SCROLL_STEP_DOWN);
add_spin_binding (widget_class, GDK_KEY_KP_Down, 0, GTK_SCROLL_STEP_DOWN);
add_spin_binding (widget_class, GDK_KEY_Page_Up, 0, GTK_SCROLL_PAGE_UP);
add_spin_binding (widget_class, GDK_KEY_Page_Down, 0, GTK_SCROLL_PAGE_DOWN);
add_spin_binding (widget_class, GDK_KEY_End, GDK_CONTROL_MASK, GTK_SCROLL_END);
add_spin_binding (widget_class, GDK_KEY_Home, GDK_CONTROL_MASK, GTK_SCROLL_START);
add_spin_binding (widget_class, GDK_KEY_Page_Up, GDK_CONTROL_MASK, GTK_SCROLL_END);
add_spin_binding (widget_class, GDK_KEY_Page_Down, GDK_CONTROL_MASK, GTK_SCROLL_START);
gtk_widget_class_set_layout_manager_type (widget_class, GTK_TYPE_BOX_LAYOUT);
gtk_widget_class_set_css_name (widget_class, I_("spinbutton"));
gtk_widget_class_set_accessible_role (widget_class, GTK_ACCESSIBLE_ROLE_SPIN_BUTTON);
}
static GtkEditable *
gtk_spin_button_get_delegate (GtkEditable *editable)
{
GtkSpinButton *spin_button = GTK_SPIN_BUTTON (editable);
return GTK_EDITABLE (spin_button->entry);
}
static void
gtk_spin_button_editable_init (GtkEditableInterface *iface)
{
iface->get_delegate = gtk_spin_button_get_delegate;
iface->insert_text = gtk_spin_button_insert_text;
}
static gboolean
gtk_spin_button_accessible_get_platform_state (GtkAccessible *self,
GtkAccessiblePlatformState state)
{
GtkSpinButton *spin_button = GTK_SPIN_BUTTON (self);
switch (state)
{
case GTK_ACCESSIBLE_PLATFORM_STATE_FOCUSABLE:
return gtk_widget_get_focusable (spin_button->entry);
case GTK_ACCESSIBLE_PLATFORM_STATE_FOCUSED:
return gtk_widget_has_focus (spin_button->entry);
default:
g_assert_not_reached ();
}
}
static void
gtk_spin_button_accessible_init (GtkAccessibleInterface *iface)
{
GtkAccessibleInterface *parent_iface = g_type_interface_peek_parent (iface);
iface->get_at_context = parent_iface->get_at_context;
iface->get_platform_state = gtk_spin_button_accessible_get_platform_state;
}
static void
gtk_cell_editable_spin_button_activated (GtkText *text, GtkSpinButton *spin)
{
g_object_ref (spin);
gtk_cell_editable_editing_done (GTK_CELL_EDITABLE (spin));
gtk_cell_editable_remove_widget (GTK_CELL_EDITABLE (spin));
g_object_unref (spin);
}
static gboolean
gtk_cell_editable_spin_button_key_pressed (GtkEventControllerKey *key,
guint keyval,
guint keycode,
GdkModifierType modifiers,
GtkSpinButton *spin)
{
if (keyval == GDK_KEY_Escape)
{
spin->editing_canceled = TRUE;
g_object_ref (spin);
gtk_cell_editable_editing_done (GTK_CELL_EDITABLE (spin));
gtk_cell_editable_remove_widget (GTK_CELL_EDITABLE (spin));
g_object_unref (spin);
return GDK_EVENT_STOP;
}
/* override focus */
if (keyval == GDK_KEY_Up || keyval == GDK_KEY_Down)
{
g_object_ref (spin);
gtk_cell_editable_editing_done (GTK_CELL_EDITABLE (spin));
gtk_cell_editable_remove_widget (GTK_CELL_EDITABLE (spin));
g_object_unref (spin);
return GDK_EVENT_STOP;
}
return GDK_EVENT_PROPAGATE;
}
static void
gtk_spin_button_start_editing (GtkCellEditable *cell_editable,
GdkEvent *event)
{
GtkSpinButton *spin = GTK_SPIN_BUTTON (cell_editable);
g_signal_connect (spin->entry, "activate",
G_CALLBACK (gtk_cell_editable_spin_button_activated), cell_editable);
g_signal_connect (gtk_text_get_key_controller (GTK_TEXT (spin->entry)), "key-pressed",
G_CALLBACK (gtk_cell_editable_spin_button_key_pressed), cell_editable);
}
static void
gtk_spin_button_cell_editable_init (GtkCellEditableIface *iface)
{
iface->start_editing = gtk_spin_button_start_editing;
}
static void
gtk_spin_button_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkSpinButton *spin_button = GTK_SPIN_BUTTON (object);
if (prop_id == PROP_EDITING_CANCELED + 1 + GTK_EDITABLE_PROP_WIDTH_CHARS)
{
spin_button->width_chars = g_value_get_int (value);
gtk_spin_button_update_width_chars (spin_button);
return;
}
if (gtk_editable_delegate_set_property (object, prop_id, value, pspec))
return;
switch (prop_id)
{
GtkAdjustment *adjustment;
case PROP_ADJUSTMENT:
adjustment = GTK_ADJUSTMENT (g_value_get_object (value));
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;
case PROP_ORIENTATION:
gtk_spin_button_set_orientation (spin_button, g_value_get_enum (value));
break;
case PROP_EDITING_CANCELED:
if (spin_button->editing_canceled != g_value_get_boolean (value))
{
spin_button->editing_canceled = g_value_get_boolean (value);
g_object_notify (object, "editing-canceled");
}
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);
if (prop_id == PROP_EDITING_CANCELED + 1 + GTK_EDITABLE_PROP_WIDTH_CHARS)
{
g_value_set_int (value, spin_button->width_chars);
return;
}
if (gtk_editable_delegate_get_property (object, prop_id, value, pspec))
return;
switch (prop_id)
{
case PROP_ADJUSTMENT:
g_value_set_object (value, 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, gtk_adjustment_get_value (spin_button->adjustment));
break;
case PROP_ORIENTATION:
g_value_set_enum (value, spin_button->orientation);
break;
case PROP_EDITING_CANCELED:
g_value_set_boolean (value, spin_button->editing_canceled);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
swipe_gesture_begin (GtkGesture *gesture,
GdkEventSequence *sequence,
GtkSpinButton *spin_button)
{
gtk_gesture_set_state (gesture, GTK_EVENT_SEQUENCE_CLAIMED);
gtk_widget_grab_focus (GTK_WIDGET (spin_button));
}
static void
swipe_gesture_update (GtkGesture *gesture,
GdkEventSequence *sequence,
GtkSpinButton *spin_button)
{
double vel_y;
gtk_gesture_swipe_get_velocity (GTK_GESTURE_SWIPE (gesture), NULL, &vel_y);
gtk_spin_button_real_spin (spin_button, -vel_y / 20);
}
static gboolean
scroll_controller_scroll (GtkEventControllerScroll *Scroll,
double dx,
double dy,
GtkWidget *widget)
{
GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
if (!gtk_widget_has_focus (widget))
gtk_widget_grab_focus (widget);
gtk_spin_button_real_spin (spin, -dy * gtk_adjustment_get_step_increment (spin->adjustment));
return GDK_EVENT_STOP;
}
static gboolean
gtk_spin_button_stop_spinning (GtkSpinButton *spin)
{
gboolean did_spin = FALSE;
if (spin->timer)
{
g_source_remove (spin->timer);
spin->timer = 0;
spin->need_timer = FALSE;
did_spin = TRUE;
}
spin->timer_step = gtk_adjustment_get_step_increment (spin->adjustment);
spin->timer_calls = 0;
spin->click_child = NULL;
return did_spin;
}
static void
start_spinning (GtkSpinButton *spin,
GtkWidget *click_child,
double step)
{
spin->click_child = click_child;
if (!spin->timer)
{
spin->timer_step = step;
spin->need_timer = TRUE;
spin->timer = g_timeout_add (TIMEOUT_INITIAL,
(GSourceFunc) gtk_spin_button_timer,
(gpointer) spin);
g_source_set_name_by_id (spin->timer, "[gtk] gtk_spin_button_timer");
}
gtk_spin_button_real_spin (spin, click_child == spin->up_button ? step : -step);
}
static void
button_pressed_cb (GtkGestureClick *gesture,
int n_pressses,
double x,
double y,
gpointer user_data)
{
GtkSpinButton *spin_button = user_data;
GtkWidget *pressed_button = gtk_event_controller_get_widget (GTK_EVENT_CONTROLLER (gesture));
gtk_widget_grab_focus (GTK_WIDGET (spin_button));
if (gtk_editable_get_editable (GTK_EDITABLE (spin_button->entry)))
{
int button = gtk_gesture_single_get_current_button (GTK_GESTURE_SINGLE (gesture));
gtk_spin_button_update (spin_button);
if (button == GDK_BUTTON_PRIMARY)
start_spinning (spin_button, pressed_button, gtk_adjustment_get_step_increment (spin_button->adjustment));
else if (button == GDK_BUTTON_MIDDLE)
start_spinning (spin_button, pressed_button, gtk_adjustment_get_page_increment (spin_button->adjustment));
gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_CLAIMED);
}
else
{
gtk_widget_error_bell (GTK_WIDGET (spin_button));
}
}
static void
button_released_cb (GtkGestureClick *gesture,
int n_pressses,
double x,
double y,
gpointer user_data)
{
GtkSpinButton *spin_button = user_data;
int button = gtk_gesture_single_get_current_button (GTK_GESTURE_SINGLE (gesture));
gtk_spin_button_stop_spinning (spin_button);
if (button == GDK_BUTTON_SECONDARY)
{
GtkWidget *button_widget = gtk_event_controller_get_widget (GTK_EVENT_CONTROLLER (gesture));
double diff;
if (button_widget == spin_button->down_button)
{
diff = gtk_adjustment_get_value (spin_button->adjustment) - gtk_adjustment_get_lower (spin_button->adjustment);
if (diff > EPSILON)
gtk_spin_button_real_spin (spin_button, -diff);
}
else if (button_widget == spin_button->up_button)
{
diff = gtk_adjustment_get_upper (spin_button->adjustment) - gtk_adjustment_get_value (spin_button->adjustment);
if (diff > EPSILON)
gtk_spin_button_real_spin (spin_button, diff);
}
}
}
static void
button_cancel_cb (GtkGesture *gesture,
GdkEventSequence *sequence,
GtkSpinButton *spin_button)
{
gtk_spin_button_stop_spinning (spin_button);
}
static void
key_controller_key_released (GtkEventControllerKey *key,
guint keyval,
guint keycode,
GdkModifierType modifiers,
GtkSpinButton *spin_button)
{
spin_button->timer_step = gtk_adjustment_get_step_increment (spin_button->adjustment);
spin_button->timer_calls = 0;
}
static void
key_controller_focus_out (GtkEventController *controller,
GtkSpinButton *spin_button)
{
if (gtk_editable_get_editable (GTK_EDITABLE (spin_button->entry)))
gtk_spin_button_update (spin_button);
}
static void
gtk_spin_button_init (GtkSpinButton *spin_button)
{
GtkEventController *controller;
GtkGesture *gesture;
spin_button->adjustment = NULL;
spin_button->timer = 0;
spin_button->climb_rate = 0.0;
spin_button->timer_step = 0.0;
spin_button->update_policy = GTK_UPDATE_ALWAYS;
spin_button->click_child = NULL;
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;
spin_button->width_chars = -1;
spin_button->orientation = GTK_ORIENTATION_HORIZONTAL;
gtk_widget_update_orientation (GTK_WIDGET (spin_button),
spin_button->orientation);
spin_button->entry = gtk_text_new ();
gtk_editable_init_delegate (GTK_EDITABLE (spin_button));
gtk_editable_set_width_chars (GTK_EDITABLE (spin_button->entry), 0);
gtk_editable_set_max_width_chars (GTK_EDITABLE (spin_button->entry), 0);
gtk_widget_set_hexpand (spin_button->entry, TRUE);
gtk_widget_set_vexpand (spin_button->entry, TRUE);
g_signal_connect (spin_button->entry, "activate", G_CALLBACK (gtk_spin_button_activate), spin_button);
gtk_widget_set_parent (spin_button->entry, GTK_WIDGET (spin_button));
spin_button->down_button = g_object_new (GTK_TYPE_BUTTON,
"accessible-role", GTK_ACCESSIBLE_ROLE_NONE,
"icon-name", "value-decrease-symbolic",
NULL);
gtk_widget_add_css_class (spin_button->down_button, "down");
gtk_widget_set_can_focus (spin_button->down_button, FALSE);
gtk_widget_set_parent (spin_button->down_button, GTK_WIDGET (spin_button));
gesture = gtk_gesture_click_new ();
gtk_gesture_single_set_button (GTK_GESTURE_SINGLE (gesture), 0);
gtk_gesture_single_set_touch_only (GTK_GESTURE_SINGLE (gesture), FALSE);
gtk_event_controller_set_propagation_phase (GTK_EVENT_CONTROLLER (gesture),
GTK_PHASE_CAPTURE);
g_signal_connect (gesture, "pressed", G_CALLBACK (button_pressed_cb), spin_button);
g_signal_connect (gesture, "released", G_CALLBACK (button_released_cb), spin_button);
g_signal_connect (gesture, "cancel", G_CALLBACK (button_cancel_cb), spin_button);
gtk_widget_add_controller (GTK_WIDGET (spin_button->down_button), GTK_EVENT_CONTROLLER (gesture));
gtk_gesture_group (gtk_button_get_gesture (GTK_BUTTON (spin_button->down_button)), gesture);
spin_button->up_button = g_object_new (GTK_TYPE_BUTTON,
"accessible-role", GTK_ACCESSIBLE_ROLE_NONE,
"icon-name", "value-increase-symbolic",
NULL);
gtk_widget_add_css_class (spin_button->up_button, "up");
gtk_widget_set_can_focus (spin_button->up_button, FALSE);
gtk_widget_set_parent (spin_button->up_button, GTK_WIDGET (spin_button));
gesture = gtk_gesture_click_new ();
gtk_gesture_single_set_button (GTK_GESTURE_SINGLE (gesture), 0);
gtk_gesture_single_set_touch_only (GTK_GESTURE_SINGLE (gesture), FALSE);
gtk_event_controller_set_propagation_phase (GTK_EVENT_CONTROLLER (gesture),
GTK_PHASE_CAPTURE);
g_signal_connect (gesture, "pressed", G_CALLBACK (button_pressed_cb), spin_button);
g_signal_connect (gesture, "released", G_CALLBACK (button_released_cb), spin_button);
g_signal_connect (gesture, "cancel", G_CALLBACK (button_cancel_cb), spin_button);
gtk_widget_add_controller (GTK_WIDGET (spin_button->up_button), GTK_EVENT_CONTROLLER (gesture));
gtk_gesture_group (gtk_button_get_gesture (GTK_BUTTON (spin_button->up_button)),
gesture);
gtk_spin_button_set_adjustment (spin_button, NULL);
gesture = gtk_gesture_swipe_new ();
gtk_gesture_single_set_touch_only (GTK_GESTURE_SINGLE (gesture), TRUE);
gtk_event_controller_set_propagation_phase (GTK_EVENT_CONTROLLER (gesture),
GTK_PHASE_CAPTURE);
g_signal_connect (gesture, "begin",
G_CALLBACK (swipe_gesture_begin), spin_button);
g_signal_connect (gesture, "update",
G_CALLBACK (swipe_gesture_update), spin_button);
gtk_widget_add_controller (GTK_WIDGET (spin_button), GTK_EVENT_CONTROLLER (gesture));
controller = gtk_event_controller_scroll_new (GTK_EVENT_CONTROLLER_SCROLL_VERTICAL |
GTK_EVENT_CONTROLLER_SCROLL_DISCRETE);
g_signal_connect (controller, "scroll",
G_CALLBACK (scroll_controller_scroll), spin_button);
gtk_widget_add_controller (GTK_WIDGET (spin_button), controller);
controller = gtk_event_controller_key_new ();
g_signal_connect (controller, "key-released",
G_CALLBACK (key_controller_key_released), spin_button);
gtk_widget_add_controller (GTK_WIDGET (spin_button), controller);
controller = gtk_event_controller_focus_new ();
g_signal_connect (controller, "leave",
G_CALLBACK (key_controller_focus_out), spin_button);
gtk_widget_add_controller (GTK_WIDGET (spin_button), controller);
}
static void
gtk_spin_button_finalize (GObject *object)
{
GtkSpinButton *spin_button = GTK_SPIN_BUTTON (object);
gtk_spin_button_unset_adjustment (spin_button);
gtk_editable_finish_delegate (GTK_EDITABLE (spin_button));
gtk_widget_unparent (spin_button->entry);
gtk_widget_unparent (spin_button->up_button);
gtk_widget_unparent (spin_button->down_button);
G_OBJECT_CLASS (gtk_spin_button_parent_class)->finalize (object);
}
static void
gtk_spin_button_dispose (GObject *object)
{
gtk_spin_button_stop_spinning (GTK_SPIN_BUTTON (object));
G_OBJECT_CLASS (gtk_spin_button_parent_class)->dispose (object);
}
static void
gtk_spin_button_realize (GtkWidget *widget)
{
GtkSpinButton *spin_button = GTK_SPIN_BUTTON (widget);
gboolean return_val;
const char *text;
GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->realize (widget);
return_val = FALSE;
g_signal_emit (spin_button, spinbutton_signals[OUTPUT], 0, &return_val);
/* If output wasn't processed explicitly by the method connected to the
* 'output' signal; and if we don't have any explicit 'text' set initially,
* fallback to the default output. */
text = gtk_editable_get_text (GTK_EDITABLE (spin_button->entry));
if (!return_val && (spin_button->numeric || text == NULL || *text == '\0'))
gtk_spin_button_default_output (spin_button);
}
/* This is called when :value, :wrap, or the bounds of the adjustment change,
* as the combination of those determines if our up|down_button are sensitive */
static void
update_buttons_sensitivity (GtkSpinButton *spin_button)
{
const double lower = gtk_adjustment_get_lower (spin_button->adjustment);
const double upper = gtk_adjustment_get_upper (spin_button->adjustment);
const double value = gtk_adjustment_get_value (spin_button->adjustment);
gtk_widget_set_sensitive (spin_button->up_button,
spin_button->wrap || upper - value > EPSILON);
gtk_widget_set_sensitive (spin_button->down_button,
spin_button->wrap || value - lower > EPSILON);
}
/* Callback used when the spin button's adjustment changes.
* We need to reevaluate our size request & up|down_button sensitivity. */
static void
adjustment_changed_cb (GtkAdjustment *adjustment, gpointer data)
{
GtkSpinButton *spin_button = GTK_SPIN_BUTTON (data);
spin_button->timer_step = gtk_adjustment_get_step_increment (adjustment);
update_buttons_sensitivity (spin_button);
gtk_accessible_update_property (GTK_ACCESSIBLE (spin_button),
GTK_ACCESSIBLE_PROPERTY_VALUE_MAX, gtk_adjustment_get_upper (adjustment),
GTK_ACCESSIBLE_PROPERTY_VALUE_MIN, gtk_adjustment_get_lower (adjustment),
GTK_ACCESSIBLE_PROPERTY_VALUE_NOW, gtk_adjustment_get_value (adjustment),
-1);
gtk_widget_queue_resize (GTK_WIDGET (spin_button));
}
static void
gtk_spin_button_unset_adjustment (GtkSpinButton *spin_button)
{
if (spin_button->adjustment)
{
g_signal_handlers_disconnect_by_func (spin_button->adjustment,
gtk_spin_button_value_changed,
spin_button);
g_signal_handlers_disconnect_by_func (spin_button->adjustment,
adjustment_changed_cb,
spin_button);
g_clear_object (&spin_button->adjustment);
}
}
static void
gtk_spin_button_set_orientation (GtkSpinButton *spin,
GtkOrientation orientation)
{
GtkBoxLayout *layout_manager;
GtkEditable *editable = GTK_EDITABLE (spin->entry);
if (spin->orientation == orientation)
return;
spin->orientation = orientation;
gtk_widget_update_orientation (GTK_WIDGET (spin), spin->orientation);
/* change alignment if it's the default */
if (spin->orientation == GTK_ORIENTATION_VERTICAL &&
gtk_editable_get_alignment (editable) == 0.0)
gtk_editable_set_alignment (editable, 0.5);
else if (spin->orientation == GTK_ORIENTATION_HORIZONTAL &&
gtk_editable_get_alignment (editable) == 0.5)
gtk_editable_set_alignment (editable, 0.0);
if (spin->orientation == GTK_ORIENTATION_HORIZONTAL)
{
/* Current orientation of the box is vertical! */
gtk_widget_insert_after (spin->up_button, GTK_WIDGET (spin), spin->down_button);
}
else
{
/* Current orientation of the box is horizontal! */
gtk_widget_insert_before (spin->up_button, GTK_WIDGET (spin), spin->entry);
}
layout_manager = GTK_BOX_LAYOUT (gtk_widget_get_layout_manager (GTK_WIDGET (spin)));
gtk_orientable_set_orientation (GTK_ORIENTABLE (layout_manager), spin->orientation);
g_object_notify (G_OBJECT (spin), "orientation");
}
static char *
weed_out_neg_zero (char *str,
int digits)
{
if (str[0] == '-')
{
char neg_zero[8];
g_snprintf (neg_zero, 8, "%0.*f", digits, -0.0);
if (strcmp (neg_zero, str) == 0)
memmove (str, str + 1, strlen (str));
}
return str;
}
static char *
gtk_spin_button_format_for_value (GtkSpinButton *spin_button,
double value)
{
char *buf = g_strdup_printf ("%0.*f", spin_button->digits, value);
return weed_out_neg_zero (buf, spin_button->digits);
}
static void
gtk_spin_button_update_width_chars (GtkSpinButton *spin_button)
{
char *str;
double value;
int width_chars, c;
if (spin_button->width_chars == -1)
{
width_chars = 0;
value = gtk_adjustment_get_lower (spin_button->adjustment);
str = gtk_spin_button_format_for_value (spin_button, value);
c = g_utf8_strlen (str, -1);
g_free (str);
width_chars = MAX (width_chars, c);
value = gtk_adjustment_get_upper (spin_button->adjustment);
str = gtk_spin_button_format_for_value (spin_button, value);
c = g_utf8_strlen (str, -1);
g_free (str);
width_chars = MAX (width_chars, c);
width_chars = MIN (width_chars, 10);
}
else
width_chars = spin_button->width_chars;
gtk_editable_set_width_chars (GTK_EDITABLE (spin_button->entry), width_chars);
}
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))
gtk_spin_button_stop_spinning (spin);
GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->state_flags_changed (widget, previous_state);
}
static int
gtk_spin_button_timer (GtkSpinButton *spin_button)
{
gboolean retval = FALSE;
if (spin_button->timer)
{
if (spin_button->click_child == spin_button->up_button)
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 = g_timeout_add (TIMEOUT_REPEAT,
(GSourceFunc) gtk_spin_button_timer,
spin_button);
g_source_set_name_by_id (spin_button->timer, "[gtk] gtk_spin_button_timer");
}
else
{
if (spin_button->climb_rate > 0.0 && spin_button->timer_step
< gtk_adjustment_get_page_increment (spin_button->adjustment))
{
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;
}
}
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_accessible_update_property (GTK_ACCESSIBLE (spin_button),
GTK_ACCESSIBLE_PROPERTY_VALUE_NOW, gtk_adjustment_get_value (adjustment),
-1);
update_buttons_sensitivity (spin_button);
g_object_notify_by_pspec (G_OBJECT (spin_button), spinbutton_props[PROP_VALUE]);
}
static void
gtk_spin_button_real_change_value (GtkSpinButton *spin,
GtkScrollType scroll)
{
double old_value;
if (!gtk_editable_get_editable (GTK_EDITABLE (spin->entry)))
{
gtk_widget_error_bell (GTK_WIDGET (spin));
return;
}
/* 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 (spin->adjustment);
switch (scroll)
{
case GTK_SCROLL_STEP_BACKWARD:
case GTK_SCROLL_STEP_DOWN:
case GTK_SCROLL_STEP_LEFT:
gtk_spin_button_real_spin (spin, -spin->timer_step);
if (spin->climb_rate > 0.0 &&
spin->timer_step < gtk_adjustment_get_page_increment (spin->adjustment))
{
if (spin->timer_calls < MAX_TIMER_CALLS)
spin->timer_calls++;
else
{
spin->timer_calls = 0;
spin->timer_step += spin->climb_rate;
}
}
break;
case GTK_SCROLL_STEP_FORWARD:
case GTK_SCROLL_STEP_UP:
case GTK_SCROLL_STEP_RIGHT:
gtk_spin_button_real_spin (spin, spin->timer_step);
if (spin->climb_rate > 0.0 &&
spin->timer_step < gtk_adjustment_get_page_increment (spin->adjustment))
{
if (spin->timer_calls < MAX_TIMER_CALLS)
spin->timer_calls++;
else
{
spin->timer_calls = 0;
spin->timer_step += spin->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 (spin->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 (spin->adjustment));
break;
case GTK_SCROLL_START:
{
double diff = gtk_adjustment_get_value (spin->adjustment) - gtk_adjustment_get_lower (spin->adjustment);
if (diff > EPSILON)
gtk_spin_button_real_spin (spin, -diff);
break;
}
case GTK_SCROLL_END:
{
double diff = gtk_adjustment_get_upper (spin->adjustment) - gtk_adjustment_get_value (spin->adjustment);
if (diff > EPSILON)
gtk_spin_button_real_spin (spin, diff);
break;
}
case GTK_SCROLL_NONE:
case GTK_SCROLL_JUMP:
default:
g_warning ("Invalid scroll type %d for GtkSpinButton::change-value", scroll);
break;
}
gtk_spin_button_update (spin);
if (gtk_adjustment_get_value (spin->adjustment) == old_value)
gtk_widget_error_bell (GTK_WIDGET (spin));
}
static void
gtk_spin_button_snap (GtkSpinButton *spin_button,
double val)
{
double inc;
double tmp;
inc = gtk_adjustment_get_step_increment (spin_button->adjustment);
if (inc == 0)
return;
tmp = (val - gtk_adjustment_get_lower (spin_button->adjustment)) / inc;
if (tmp - floor (tmp) < ceil (tmp) - tmp)
val = gtk_adjustment_get_lower (spin_button->adjustment) + floor (tmp) * inc;
else
val = gtk_adjustment_get_lower (spin_button->adjustment) + ceil (tmp) * inc;
gtk_spin_button_set_value (spin_button, val);
}
static void
gtk_spin_button_activate (GtkText *entry,
gpointer user_data)
{
GtkSpinButton *spin_button = user_data;
if (gtk_editable_get_editable (GTK_EDITABLE (spin_button->entry)))
gtk_spin_button_update (spin_button);
}
static void
gtk_spin_button_insert_text (GtkEditable *editable,
const char *new_text,
int new_text_length,
int *position)
{
GtkSpinButton *spin = GTK_SPIN_BUTTON (editable);
if (spin->numeric)
{
struct lconv *lc;
gboolean sign;
int dotpos = -1;
int i;
guint32 pos_sign;
guint32 neg_sign;
int entry_length;
const char *entry_text;
entry_text = gtk_editable_get_text (GTK_EDITABLE (spin->entry));
entry_length = g_utf8_strlen (entry_text, -1);
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 to "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 &&
(int)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 > (int)spin->digits))
return;
dotpos = *position + i;
}
else if (new_text[i] < 0x30 || new_text[i] > 0x39)
return;
}
}
gtk_editable_insert_text (GTK_EDITABLE (spin->entry),
new_text, new_text_length, position);
}
static void
gtk_spin_button_real_spin (GtkSpinButton *spin_button,
double increment)
{
GtkAdjustment *adjustment;
double new_value = 0.0;
gboolean wrapped = FALSE;
adjustment = spin_button->adjustment;
new_value = gtk_adjustment_get_value (adjustment) + increment;
if (increment > 0)
{
if (spin_button->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 (spin_button->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);
}
static int
gtk_spin_button_default_input (GtkSpinButton *spin_button,
double *new_val)
{
char *err = NULL;
const char *text = gtk_editable_get_text (GTK_EDITABLE (spin_button->entry));
*new_val = g_strtod (text, &err);
if (*err)
return GTK_INPUT_ERROR;
else
return FALSE;
}
static void
gtk_spin_button_default_output (GtkSpinButton *spin_button)
{
char *buf = gtk_spin_button_format_for_value (spin_button,
gtk_adjustment_get_value (spin_button->adjustment));
if (strcmp (buf, gtk_editable_get_text (GTK_EDITABLE (spin_button->entry))))
gtk_editable_set_text (GTK_EDITABLE (spin_button->entry), buf);
g_free (buf);
}
/***********************************************************
***********************************************************
*** Public interface ***
***********************************************************
***********************************************************/
/**
* gtk_spin_button_configure:
* @spin_button: a #GtkSpinButton
* @adjustment: (nullable): a #GtkAdjustment to replace the spin button’s
* existing adjustment, or %NULL to leave its current adjustment unchanged
* @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 updated accordingly.
*/
void
gtk_spin_button_configure (GtkSpinButton *spin_button,
GtkAdjustment *adjustment,
double climb_rate,
guint digits)
{
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
if (!adjustment)
adjustment = spin_button->adjustment;
g_object_freeze_notify (G_OBJECT (spin_button));
if (spin_button->adjustment != adjustment)
{
gtk_spin_button_unset_adjustment (spin_button);
spin_button->adjustment = 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);
spin_button->timer_step = gtk_adjustment_get_step_increment (spin_button->adjustment);
g_object_notify_by_pspec (G_OBJECT (spin_button), spinbutton_props[PROP_ADJUSTMENT]);
gtk_widget_queue_resize (GTK_WIDGET (spin_button));
}
if (spin_button->digits != digits)
{
spin_button->digits = digits;
g_object_notify_by_pspec (G_OBJECT (spin_button), spinbutton_props[PROP_DIGITS]);
}
if (spin_button->climb_rate != climb_rate)
{
spin_button->climb_rate = climb_rate;
g_object_notify_by_pspec (G_OBJECT (spin_button), spinbutton_props[PROP_CLIMB_RATE]);
}
gtk_spin_button_update_width_chars (spin_button);
g_object_thaw_notify (G_OBJECT (spin_button));
gtk_accessible_update_property (GTK_ACCESSIBLE (spin_button),
GTK_ACCESSIBLE_PROPERTY_VALUE_MAX, gtk_adjustment_get_upper (adjustment),
GTK_ACCESSIBLE_PROPERTY_VALUE_MIN, gtk_adjustment_get_lower (adjustment),
GTK_ACCESSIBLE_PROPERTY_VALUE_NOW, gtk_adjustment_get_value (adjustment),
-1);
gtk_spin_button_value_changed (adjustment, spin_button);
}
/**
* gtk_spin_button_new:
* @adjustment: (allow-none): the #GtkAdjustment object that this spin
* button should use, or %NULL
* @climb_rate: specifies by how much the rate of change in the value will
* accelerate if you continue to hold down an up/down button or arrow key
* @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,
double 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.
*
* Returns: The new spin button as a #GtkWidget
*/
GtkWidget *
gtk_spin_button_new_with_range (double min,
double max,
double step)
{
GtkAdjustment *adjustment;
GtkSpinButton *spin;
int 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 ((int) 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);
}
/**
* 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 (!adjustment)
adjustment = gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
gtk_spin_button_configure (spin_button,
adjustment,
spin_button->climb_rate,
spin_button->digits);
}
/**
* gtk_spin_button_get_adjustment:
* @spin_button: a #GtkSpinButton
*
* Get the adjustment associated with a #GtkSpinButton
*
* Returns: (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->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)
{
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_by_pspec (G_OBJECT (spin_button), spinbutton_props[PROP_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,
double step,
double page)
{
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
gtk_adjustment_configure (spin_button->adjustment,
gtk_adjustment_get_value (spin_button->adjustment),
gtk_adjustment_get_lower (spin_button->adjustment),
gtk_adjustment_get_upper (spin_button->adjustment),
step,
page,
gtk_adjustment_get_page_size (spin_button->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,
double *step,
double *page)
{
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
if (step)
*step = gtk_adjustment_get_step_increment (spin_button->adjustment);
if (page)
*page = gtk_adjustment_get_page_increment (spin_button->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.
*
* If the current value is outside this range, it will be adjusted
* to fit within the range, otherwise it will remain unchanged.
*/
void
gtk_spin_button_set_range (GtkSpinButton *spin_button,
double min,
double max)
{
GtkAdjustment *adjustment;
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
adjustment = spin_button->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) (optional): location to store minimum allowed value, or %NULL
* @max: (out) (optional): 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,
double *min,
double *max)
{
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
if (min)
*min = gtk_adjustment_get_lower (spin_button->adjustment);
if (max)
*max = gtk_adjustment_get_upper (spin_button->adjustment);
}
/**
* gtk_spin_button_get_value:
* @spin_button: a #GtkSpinButton
*
* Get the value in the @spin_button.
*
* Returns: the value of @spin_button
*/
double
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->adjustment);
}
/**
* gtk_spin_button_get_value_as_int:
* @spin_button: a #GtkSpinButton
*
* Get the value @spin_button represented as an integer.
*
* Returns: the value of @spin_button
*/
int
gtk_spin_button_get_value_as_int (GtkSpinButton *spin_button)
{
double val;
g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spin_button), 0);
val = gtk_adjustment_get_value (spin_button->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,
double value)
{
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
if (fabs (value - gtk_adjustment_get_value (spin_button->adjustment)) > EPSILON)
gtk_adjustment_set_value (spin_button->adjustment, value);
else
{
int return_val = FALSE;
g_signal_emit (spin_button, spinbutton_signals[OUTPUT], 0, &return_val);
if (!return_val)
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_by_pspec (G_OBJECT (spin_button), spinbutton_props[PROP_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().
*
* Returns: 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));
numeric = numeric != FALSE;
if (spin_button->numeric != numeric)
{
spin_button->numeric = numeric;
g_object_notify_by_pspec (G_OBJECT (spin_button), spinbutton_props[PROP_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().
*
* Returns: %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));
wrap = wrap != FALSE;
if (spin_button->wrap != wrap)
{
spin_button->wrap = wrap;
g_object_notify_by_pspec (G_OBJECT (spin_button), spinbutton_props[PROP_WRAP]);
update_buttons_sensitivity (spin_button);
}
}
/**
* 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().
*
* Returns: %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;
}
/**
* 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_editable_get_editable (GTK_EDITABLE (spin_button->entry)))
gtk_spin_button_update (spin_button);
g_object_notify_by_pspec (G_OBJECT (spin_button), spinbutton_props[PROP_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().
*
* Returns: %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_set_climb_rate:
* @spin_button: a #GtkSpinButton
* @climb_rate: the rate of acceleration, must be >= 0
*
* Sets the acceleration rate for repeated changes when you
* hold down a button or key.
*/
void
gtk_spin_button_set_climb_rate (GtkSpinButton *spin_button,
double climb_rate)
{
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
g_return_if_fail (0.0 <= climb_rate);
if (spin_button->climb_rate == climb_rate)
return;
spin_button->climb_rate = climb_rate;
g_object_notify_by_pspec (G_OBJECT (spin_button), spinbutton_props[PROP_CLIMB_RATE]);
}
/**
* gtk_spin_button_get_climb_rate:
* @spin_button: a #GtkSpinButton
*
* Returns the acceleration rate for repeated changes.
*
* Returns: the acceleration rate
*/
double
gtk_spin_button_get_climb_rate (GtkSpinButton *spin_button)
{
g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spin_button), 0.0);
return spin_button->climb_rate;
}
/**
* 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,
double increment)
{
GtkAdjustment *adjustment;
double diff;
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
adjustment = spin_button->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)
{
double val;
int error = 0;
int return_val;
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
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;
if (spin_button->update_policy == GTK_UPDATE_ALWAYS)
{
if (val < gtk_adjustment_get_lower (spin_button->adjustment))
val = gtk_adjustment_get_lower (spin_button->adjustment);
else if (val > gtk_adjustment_get_upper (spin_button->adjustment))
val = gtk_adjustment_get_upper (spin_button->adjustment);
}
else if ((spin_button->update_policy == GTK_UPDATE_IF_VALID) &&
(error ||
val < gtk_adjustment_get_lower (spin_button->adjustment) ||
val > gtk_adjustment_get_upper (spin_button->adjustment)))
{
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
gtk_spin_button_set_value (spin_button, val);
}
GtkText *
gtk_spin_button_get_text_widget (GtkSpinButton *spin_button)
{
return GTK_TEXT (spin_button->entry);
}
Reference in New Issue View Git Blame Copy Permalink