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3078b180fe
gtk2/gtk/gtkspinbutton.c
Benjamin Otte 3078b180fe Replace "gdouble" with "double"
2020-07-25 00:47:36 +02:00

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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, 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 "gtkadjustment.h"
#include "gtkbox.h"
#include "gtkbutton.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 "a11y/gtkspinbuttonaccessible.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
* accomodate the lower and upper bounds of the adjustment. If this is
* not desired, the automatic sizing can be turned off by explicitly
* setting #GtkSpinButton::width-chars to a value != -1.
*
* # 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.
*
* ## 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);
* }
* ]|
*/
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 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_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_accessible_type (widget_class, GTK_TYPE_SPIN_BUTTON_ACCESSIBLE);
gtk_widget_class_set_layout_manager_type (widget_class, GTK_TYPE_BOX_LAYOUT);
gtk_widget_class_set_css_name (widget_class, I_("spinbutton"));
}
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 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));
}
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 = gtk_button_new_from_icon_name ("value-decrease-symbolic");
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));
spin_button->up_button = gtk_button_new_from_icon_name ("value-increase-symbolic");
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_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 (spin_button->adjustment);
update_buttons_sensitivity (spin_button);
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);
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 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 &&
(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_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_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);
}
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