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gtk2/gtk/gtkspinbutton.c
Javier Jardón b18b33ae82 Revert "Forward-port a GtkAdjustment compatibility fix" 
In the early 2.14.x releases, GtkAdjustment was changed to enforce
that values are restricted to the range [lower, upper - page_size].
This has always been the documented behaviour, and the recommended
practice is to set page_size to 0 when using adjustments for simple
scalar values, like in a slider or spin button.
Due to the large number of applications that are affected by this
change, the behaviour has been reverted to the old behaviour in
2.14.3, with an explicit warning that this change will be
reintroduced in 2.90.

This reverts commit e6373738fc.

https://bugzilla.gnome.org/show_bug.cgi?id=619474
2010-05-24 15:39:30 +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, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <string.h>
#include <locale.h>
#include "gdk/gdkkeysyms.h"
#include "gtkbindings.h"
#include "gtkspinbutton.h"
#include "gtkentryprivate.h"
#include "gtkmain.h"
#include "gtkmarshalers.h"
#include "gtksettings.h"
#include "gtkprivate.h"
#include "gtkintl.h"
#include "gtkalias.h"
#define MIN_SPIN_BUTTON_WIDTH 30
#define MAX_TIMER_CALLS 5
#define EPSILON 1e-10
#define MAX_DIGITS 20
#define MIN_ARROW_WIDTH 6
enum {
PROP_0,
PROP_ADJUSTMENT,
PROP_CLIMB_RATE,
PROP_DIGITS,
PROP_SNAP_TO_TICKS,
PROP_NUMERIC,
PROP_WRAP,
PROP_UPDATE_POLICY,
PROP_VALUE
};
/* Signals */
enum
{
INPUT,
OUTPUT,
VALUE_CHANGED,
CHANGE_VALUE,
WRAPPED,
LAST_SIGNAL
};
static void gtk_spin_button_editable_init (GtkEditableClass *iface);
static void gtk_spin_button_finalize (GObject *object);
static void gtk_spin_button_destroy (GtkObject *object);
static void gtk_spin_button_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_spin_button_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void gtk_spin_button_map (GtkWidget *widget);
static void gtk_spin_button_unmap (GtkWidget *widget);
static void gtk_spin_button_realize (GtkWidget *widget);
static void gtk_spin_button_unrealize (GtkWidget *widget);
static void gtk_spin_button_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void gtk_spin_button_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static gint gtk_spin_button_expose (GtkWidget *widget,
GdkEventExpose *event);
static gint gtk_spin_button_button_press (GtkWidget *widget,
GdkEventButton *event);
static gint gtk_spin_button_button_release (GtkWidget *widget,
GdkEventButton *event);
static gint gtk_spin_button_motion_notify (GtkWidget *widget,
GdkEventMotion *event);
static gint gtk_spin_button_enter_notify (GtkWidget *widget,
GdkEventCrossing *event);
static gint gtk_spin_button_leave_notify (GtkWidget *widget,
GdkEventCrossing *event);
static gint gtk_spin_button_focus_out (GtkWidget *widget,
GdkEventFocus *event);
static void gtk_spin_button_grab_notify (GtkWidget *widget,
gboolean was_grabbed);
static void gtk_spin_button_state_changed (GtkWidget *widget,
GtkStateType previous_state);
static void gtk_spin_button_style_set (GtkWidget *widget,
GtkStyle *previous_style);
static void gtk_spin_button_draw_arrow (GtkSpinButton *spin_button,
GdkRectangle *area,
GtkArrowType arrow_type);
static gboolean gtk_spin_button_timer (GtkSpinButton *spin_button);
static void gtk_spin_button_stop_spinning (GtkSpinButton *spin);
static void gtk_spin_button_value_changed (GtkAdjustment *adjustment,
GtkSpinButton *spin_button);
static gint gtk_spin_button_key_release (GtkWidget *widget,
GdkEventKey *event);
static gint gtk_spin_button_scroll (GtkWidget *widget,
GdkEventScroll *event);
static void gtk_spin_button_activate (GtkEntry *entry);
static void gtk_spin_button_get_text_area_size (GtkEntry *entry,
gint *x,
gint *y,
gint *width,
gint *height);
static void gtk_spin_button_snap (GtkSpinButton *spin_button,
gdouble val);
static void gtk_spin_button_insert_text (GtkEditable *editable,
const gchar *new_text,
gint new_text_length,
gint *position);
static void gtk_spin_button_real_spin (GtkSpinButton *spin_button,
gdouble step);
static void gtk_spin_button_real_change_value (GtkSpinButton *spin,
GtkScrollType scroll);
static gint gtk_spin_button_default_input (GtkSpinButton *spin_button,
gdouble *new_val);
static gint gtk_spin_button_default_output (GtkSpinButton *spin_button);
static gint spin_button_get_arrow_size (GtkSpinButton *spin_button);
static gint spin_button_get_shadow_type (GtkSpinButton *spin_button);
static guint spinbutton_signals[LAST_SIGNAL] = {0};
#define NO_ARROW 2
G_DEFINE_TYPE_WITH_CODE (GtkSpinButton, gtk_spin_button, GTK_TYPE_ENTRY,
G_IMPLEMENT_INTERFACE (GTK_TYPE_EDITABLE,
gtk_spin_button_editable_init))
#define add_spin_binding(binding_set, keyval, mask, scroll) \
gtk_binding_entry_add_signal (binding_set, keyval, mask, \
"change_value", 1, \
GTK_TYPE_SCROLL_TYPE, scroll)
static void
gtk_spin_button_class_init (GtkSpinButtonClass *class)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (class);
GtkObjectClass *object_class = GTK_OBJECT_CLASS (class);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
GtkEntryClass *entry_class = GTK_ENTRY_CLASS (class);
GtkBindingSet *binding_set;
gobject_class->finalize = gtk_spin_button_finalize;
gobject_class->set_property = gtk_spin_button_set_property;
gobject_class->get_property = gtk_spin_button_get_property;
object_class->destroy = gtk_spin_button_destroy;
widget_class->map = gtk_spin_button_map;
widget_class->unmap = gtk_spin_button_unmap;
widget_class->realize = gtk_spin_button_realize;
widget_class->unrealize = gtk_spin_button_unrealize;
widget_class->size_request = gtk_spin_button_size_request;
widget_class->size_allocate = gtk_spin_button_size_allocate;
widget_class->expose_event = gtk_spin_button_expose;
widget_class->scroll_event = gtk_spin_button_scroll;
widget_class->button_press_event = gtk_spin_button_button_press;
widget_class->button_release_event = gtk_spin_button_button_release;
widget_class->motion_notify_event = gtk_spin_button_motion_notify;
widget_class->key_release_event = gtk_spin_button_key_release;
widget_class->enter_notify_event = gtk_spin_button_enter_notify;
widget_class->leave_notify_event = gtk_spin_button_leave_notify;
widget_class->focus_out_event = gtk_spin_button_focus_out;
widget_class->grab_notify = gtk_spin_button_grab_notify;
widget_class->state_changed = gtk_spin_button_state_changed;
widget_class->style_set = gtk_spin_button_style_set;
entry_class->activate = gtk_spin_button_activate;
entry_class->get_text_area_size = gtk_spin_button_get_text_area_size;
class->input = NULL;
class->output = NULL;
class->change_value = gtk_spin_button_real_change_value;
g_object_class_install_property (gobject_class,
PROP_ADJUSTMENT,
g_param_spec_object ("adjustment",
P_("Adjustment"),
P_("The adjustment that holds the value of the spinbutton"),
GTK_TYPE_ADJUSTMENT,
GTK_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_CLIMB_RATE,
g_param_spec_double ("climb-rate",
P_("Climb Rate"),
P_("The acceleration rate when you hold down a button"),
0.0,
G_MAXDOUBLE,
0.0,
GTK_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_DIGITS,
g_param_spec_uint ("digits",
P_("Digits"),
P_("The number of decimal places to display"),
0,
MAX_DIGITS,
0,
GTK_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_SNAP_TO_TICKS,
g_param_spec_boolean ("snap-to-ticks",
P_("Snap to Ticks"),
P_("Whether erroneous values are automatically changed to a spin button's nearest step increment"),
FALSE,
GTK_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_NUMERIC,
g_param_spec_boolean ("numeric",
P_("Numeric"),
P_("Whether non-numeric characters should be ignored"),
FALSE,
GTK_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_WRAP,
g_param_spec_boolean ("wrap",
P_("Wrap"),
P_("Whether a spin button should wrap upon reaching its limits"),
FALSE,
GTK_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_UPDATE_POLICY,
g_param_spec_enum ("update-policy",
P_("Update Policy"),
P_("Whether the spin button should update always, or only when the value is legal"),
GTK_TYPE_SPIN_BUTTON_UPDATE_POLICY,
GTK_UPDATE_ALWAYS,
GTK_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_VALUE,
g_param_spec_double ("value",
P_("Value"),
P_("Reads the current value, or sets a new value"),
-G_MAXDOUBLE,
G_MAXDOUBLE,
0.0,
GTK_PARAM_READWRITE));
gtk_widget_class_install_style_property_parser (widget_class,
g_param_spec_enum ("shadow-type",
"Shadow Type",
P_("Style of bevel around the spin button"),
GTK_TYPE_SHADOW_TYPE,
GTK_SHADOW_IN,
GTK_PARAM_READABLE),
gtk_rc_property_parse_enum);
spinbutton_signals[INPUT] =
g_signal_new (I_("input"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkSpinButtonClass, input),
NULL, NULL,
_gtk_marshal_INT__POINTER,
G_TYPE_INT, 1,
G_TYPE_POINTER);
/**
* GtkSpinButton::output:
* @spin_button: the object which received the signal
*
* The ::output signal can be used to change to formatting
* of the value that is displayed in the spin buttons entry.
* |[
* /&ast; show leading zeros &ast;/
* static gboolean
* on_output (GtkSpinButton *spin,
* gpointer data)
* {
* GtkAdjustment *adj;
* gchar *text;
* int value;
*
* adj = gtk_spin_button_get_adjustment (spin);
* value = (int)gtk_adjustment_get_value (adj);
* text = g_strdup_printf ("%02d", value);
* gtk_entry_set_text (GTK_ENTRY (spin), text);
* g_free (text);
*
* return TRUE;
* }
* ]|
*
* Returns: %TRUE if the value has been displayed.
*/
spinbutton_signals[OUTPUT] =
g_signal_new (I_("output"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkSpinButtonClass, output),
_gtk_boolean_handled_accumulator, NULL,
_gtk_marshal_BOOLEAN__VOID,
G_TYPE_BOOLEAN, 0);
spinbutton_signals[VALUE_CHANGED] =
g_signal_new (I_("value-changed"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkSpinButtonClass, value_changed),
NULL, NULL,
_gtk_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/**
* GtkSpinButton::wrapped:
* @spinbutton: the object which received the signal
*
* The wrapped signal is emitted right after the spinbutton wraps
* from its maximum to minimum value or vice-versa.
*
* Since: 2.10
*/
spinbutton_signals[WRAPPED] =
g_signal_new (I_("wrapped"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkSpinButtonClass, wrapped),
NULL, NULL,
_gtk_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/* Action signals */
spinbutton_signals[CHANGE_VALUE] =
g_signal_new (I_("change-value"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkSpinButtonClass, change_value),
NULL, NULL,
_gtk_marshal_VOID__ENUM,
G_TYPE_NONE, 1,
GTK_TYPE_SCROLL_TYPE);
binding_set = gtk_binding_set_by_class (class);
add_spin_binding (binding_set, GDK_Up, 0, GTK_SCROLL_STEP_UP);
add_spin_binding (binding_set, GDK_KP_Up, 0, GTK_SCROLL_STEP_UP);
add_spin_binding (binding_set, GDK_Down, 0, GTK_SCROLL_STEP_DOWN);
add_spin_binding (binding_set, GDK_KP_Down, 0, GTK_SCROLL_STEP_DOWN);
add_spin_binding (binding_set, GDK_Page_Up, 0, GTK_SCROLL_PAGE_UP);
add_spin_binding (binding_set, GDK_Page_Down, 0, GTK_SCROLL_PAGE_DOWN);
add_spin_binding (binding_set, GDK_Page_Up, GDK_CONTROL_MASK, GTK_SCROLL_END);
add_spin_binding (binding_set, GDK_Page_Down, GDK_CONTROL_MASK, GTK_SCROLL_START);
}
static void
gtk_spin_button_editable_init (GtkEditableClass *iface)
{
iface->insert_text = gtk_spin_button_insert_text;
}
static void
gtk_spin_button_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkSpinButton *spin_button = GTK_SPIN_BUTTON (object);
switch (prop_id)
{
GtkAdjustment *adjustment;
case PROP_ADJUSTMENT:
adjustment = GTK_ADJUSTMENT (g_value_get_object (value));
if (!adjustment)
adjustment = (GtkAdjustment*) gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
gtk_spin_button_set_adjustment (spin_button, adjustment);
break;
case PROP_CLIMB_RATE:
gtk_spin_button_configure (spin_button,
spin_button->adjustment,
g_value_get_double (value),
spin_button->digits);
break;
case PROP_DIGITS:
gtk_spin_button_configure (spin_button,
spin_button->adjustment,
spin_button->climb_rate,
g_value_get_uint (value));
break;
case PROP_SNAP_TO_TICKS:
gtk_spin_button_set_snap_to_ticks (spin_button, g_value_get_boolean (value));
break;
case PROP_NUMERIC:
gtk_spin_button_set_numeric (spin_button, g_value_get_boolean (value));
break;
case PROP_WRAP:
gtk_spin_button_set_wrap (spin_button, g_value_get_boolean (value));
break;
case PROP_UPDATE_POLICY:
gtk_spin_button_set_update_policy (spin_button, g_value_get_enum (value));
break;
case PROP_VALUE:
gtk_spin_button_set_value (spin_button, g_value_get_double (value));
break;
default:
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);
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, spin_button->adjustment->value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_spin_button_init (GtkSpinButton *spin_button)
{
spin_button->adjustment = NULL;
spin_button->panel = NULL;
spin_button->timer = 0;
spin_button->climb_rate = 0.0;
spin_button->timer_step = 0.0;
spin_button->update_policy = GTK_UPDATE_ALWAYS;
spin_button->in_child = NO_ARROW;
spin_button->click_child = NO_ARROW;
spin_button->button = 0;
spin_button->need_timer = FALSE;
spin_button->timer_calls = 0;
spin_button->digits = 0;
spin_button->numeric = FALSE;
spin_button->wrap = FALSE;
spin_button->snap_to_ticks = FALSE;
gtk_spin_button_set_adjustment (spin_button,
(GtkAdjustment*) gtk_adjustment_new (0, 0, 0, 0, 0, 0));
}
static void
gtk_spin_button_finalize (GObject *object)
{
gtk_spin_button_set_adjustment (GTK_SPIN_BUTTON (object), NULL);
G_OBJECT_CLASS (gtk_spin_button_parent_class)->finalize (object);
}
static void
gtk_spin_button_destroy (GtkObject *object)
{
gtk_spin_button_stop_spinning (GTK_SPIN_BUTTON (object));
GTK_OBJECT_CLASS (gtk_spin_button_parent_class)->destroy (object);
}
static void
gtk_spin_button_map (GtkWidget *widget)
{
if (gtk_widget_get_realized (widget) && !gtk_widget_get_mapped (widget))
{
GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->map (widget);
gdk_window_show (GTK_SPIN_BUTTON (widget)->panel);
}
}
static void
gtk_spin_button_unmap (GtkWidget *widget)
{
if (gtk_widget_get_mapped (widget))
{
gtk_spin_button_stop_spinning (GTK_SPIN_BUTTON (widget));
gdk_window_hide (GTK_SPIN_BUTTON (widget)->panel);
GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->unmap (widget);
}
}
static void
gtk_spin_button_realize (GtkWidget *widget)
{
GtkSpinButton *spin_button = GTK_SPIN_BUTTON (widget);
GdkWindowAttr attributes;
gint attributes_mask;
gboolean return_val;
gint arrow_size;
arrow_size = spin_button_get_arrow_size (spin_button);
gtk_widget_set_events (widget, gtk_widget_get_events (widget) |
GDK_KEY_RELEASE_MASK);
GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->realize (widget);
attributes.window_type = GDK_WINDOW_CHILD;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.visual = gtk_widget_get_visual (widget);
attributes.colormap = gtk_widget_get_colormap (widget);
attributes.event_mask = gtk_widget_get_events (widget);
attributes.event_mask |= GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_MASK
| GDK_BUTTON_RELEASE_MASK | GDK_LEAVE_NOTIFY_MASK | GDK_ENTER_NOTIFY_MASK
| GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK;
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
attributes.x = (widget->allocation.width - arrow_size -
2 * widget->style->xthickness);
attributes.y = (widget->allocation.height -
widget->requisition.height) / 2;
attributes.width = arrow_size + 2 * widget->style->xthickness;
attributes.height = widget->requisition.height;
spin_button->panel = gdk_window_new (widget->window,
&attributes, attributes_mask);
gdk_window_set_user_data (spin_button->panel, widget);
gtk_style_set_background (widget->style, spin_button->panel, GTK_STATE_NORMAL);
return_val = FALSE;
g_signal_emit (spin_button, spinbutton_signals[OUTPUT], 0, &return_val);
if (return_val == FALSE)
gtk_spin_button_default_output (spin_button);
gtk_widget_queue_resize (GTK_WIDGET (spin_button));
}
static void
gtk_spin_button_unrealize (GtkWidget *widget)
{
GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->unrealize (widget);
if (spin->panel)
{
gdk_window_set_user_data (spin->panel, NULL);
gdk_window_destroy (spin->panel);
spin->panel = NULL;
}
}
static int
compute_double_length (double val, int digits)
{
int a;
int extra;
a = 1;
if (fabs (val) > 1.0)
a = floor (log10 (fabs (val))) + 1;
extra = 0;
/* The dot: */
if (digits > 0)
extra++;
/* The sign: */
if (val < 0)
extra++;
return a + digits + extra;
}
static void
gtk_spin_button_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
GtkSpinButton *spin_button = GTK_SPIN_BUTTON (widget);
GtkEntry *entry = GTK_ENTRY (widget);
gint arrow_size;
arrow_size = spin_button_get_arrow_size (spin_button);
GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->size_request (widget, requisition);
if (entry->width_chars < 0)
{
PangoContext *context;
PangoFontMetrics *metrics;
gint width;
gint w;
gint string_len;
gint max_string_len;
gint digit_width;
gboolean interior_focus;
gint focus_width;
gint xborder, yborder;
GtkBorder inner_border;
gtk_widget_style_get (widget,
"interior-focus", &interior_focus,
"focus-line-width", &focus_width,
NULL);
context = gtk_widget_get_pango_context (widget);
metrics = pango_context_get_metrics (context,
widget->style->font_desc,
pango_context_get_language (context));
digit_width = pango_font_metrics_get_approximate_digit_width (metrics);
digit_width = PANGO_SCALE *
((digit_width + PANGO_SCALE - 1) / PANGO_SCALE);
pango_font_metrics_unref (metrics);
/* Get max of MIN_SPIN_BUTTON_WIDTH, size of upper, size of lower */
width = MIN_SPIN_BUTTON_WIDTH;
max_string_len = MAX (10, compute_double_length (1e9 * spin_button->adjustment->step_increment,
spin_button->digits));
string_len = compute_double_length (spin_button->adjustment->upper,
spin_button->digits);
w = PANGO_PIXELS (MIN (string_len, max_string_len) * digit_width);
width = MAX (width, w);
string_len = compute_double_length (spin_button->adjustment->lower,
spin_button->digits);
w = PANGO_PIXELS (MIN (string_len, max_string_len) * digit_width);
width = MAX (width, w);
_gtk_entry_get_borders (entry, &xborder, &yborder);
_gtk_entry_effective_inner_border (entry, &inner_border);
requisition->width = width + xborder * 2 + inner_border.left + inner_border.right;
}
requisition->width += arrow_size + 2 * widget->style->xthickness;
}
static void
gtk_spin_button_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
GtkAllocation panel_allocation;
gint arrow_size;
gint panel_width;
arrow_size = spin_button_get_arrow_size (spin);
panel_width = arrow_size + 2 * widget->style->xthickness;
widget->allocation = *allocation;
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
panel_allocation.x = 0;
else
panel_allocation.x = allocation->width - panel_width;
panel_allocation.width = panel_width;
panel_allocation.height = MIN (widget->requisition.height, allocation->height);
panel_allocation.y = 0;
GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->size_allocate (widget, allocation);
if (gtk_widget_get_realized (widget))
{
gdk_window_move_resize (GTK_SPIN_BUTTON (widget)->panel,
panel_allocation.x,
panel_allocation.y,
panel_allocation.width,
panel_allocation.height);
}
gtk_widget_queue_draw (GTK_WIDGET (spin));
}
static gint
gtk_spin_button_expose (GtkWidget *widget,
GdkEventExpose *event)
{
GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
if (gtk_widget_is_drawable (widget))
{
if (event->window == spin->panel)
{
GtkShadowType shadow_type;
shadow_type = spin_button_get_shadow_type (spin);
if (shadow_type != GTK_SHADOW_NONE)
{
gint width, height;
gdk_drawable_get_size (spin->panel, &width, &height);
gtk_paint_box (widget->style, spin->panel,
GTK_STATE_NORMAL, shadow_type,
&event->area, widget, "spinbutton",
0, 0, width, height);
}
gtk_spin_button_draw_arrow (spin, &event->area, GTK_ARROW_UP);
gtk_spin_button_draw_arrow (spin, &event->area, GTK_ARROW_DOWN);
}
else
GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->expose_event (widget, event);
}
return FALSE;
}
static gboolean
spin_button_at_limit (GtkSpinButton *spin_button,
GtkArrowType arrow)
{
GtkArrowType effective_arrow;
if (spin_button->wrap)
return FALSE;
if (spin_button->adjustment->step_increment > 0)
effective_arrow = arrow;
else
effective_arrow = arrow == GTK_ARROW_UP ? GTK_ARROW_DOWN : GTK_ARROW_UP;
if (effective_arrow == GTK_ARROW_UP &&
(spin_button->adjustment->upper - spin_button->adjustment->value <= EPSILON))
return TRUE;
if (effective_arrow == GTK_ARROW_DOWN &&
(spin_button->adjustment->value - spin_button->adjustment->lower <= EPSILON))
return TRUE;
return FALSE;
}
static void
gtk_spin_button_draw_arrow (GtkSpinButton *spin_button,
GdkRectangle *area,
GtkArrowType arrow_type)
{
GtkStateType state_type;
GtkShadowType shadow_type;
GtkWidget *widget;
gint x;
gint y;
gint height;
gint width;
gint h, w;
g_return_if_fail (arrow_type == GTK_ARROW_UP || arrow_type == GTK_ARROW_DOWN);
widget = GTK_WIDGET (spin_button);
if (gtk_widget_is_drawable (widget))
{
width = spin_button_get_arrow_size (spin_button) + 2 * widget->style->xthickness;
if (arrow_type == GTK_ARROW_UP)
{
x = 0;
y = 0;
height = widget->requisition.height / 2;
}
else
{
x = 0;
y = widget->requisition.height / 2;
height = (widget->requisition.height + 1) / 2;
}
if (spin_button_at_limit (spin_button, arrow_type))
{
shadow_type = GTK_SHADOW_OUT;
state_type = GTK_STATE_INSENSITIVE;
}
else
{
if (spin_button->click_child == arrow_type)
{
state_type = GTK_STATE_ACTIVE;
shadow_type = GTK_SHADOW_IN;
}
else
{
if (spin_button->in_child == arrow_type &&
spin_button->click_child == NO_ARROW)
{
state_type = GTK_STATE_PRELIGHT;
}
else
{
state_type = gtk_widget_get_state (widget);
}
shadow_type = GTK_SHADOW_OUT;
}
}
gtk_paint_box (widget->style, spin_button->panel,
state_type, shadow_type,
area, widget,
(arrow_type == GTK_ARROW_UP)? "spinbutton_up" : "spinbutton_down",
x, y, width, height);
height = widget->requisition.height;
if (arrow_type == GTK_ARROW_DOWN)
{
y = height / 2;
height = height - y - 2;
}
else
{
y = 2;
height = height / 2 - 2;
}
width -= 3;
if (widget && gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
x = 2;
else
x = 1;
w = width / 2;
w -= w % 2 - 1; /* force odd */
h = (w + 1) / 2;
x += (width - w) / 2;
y += (height - h) / 2;
height = h;
width = w;
gtk_paint_arrow (widget->style, spin_button->panel,
state_type, shadow_type,
area, widget, "spinbutton",
arrow_type, TRUE,
x, y, width, height);
}
}
static gint
gtk_spin_button_enter_notify (GtkWidget *widget,
GdkEventCrossing *event)
{
GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
if (event->window == spin->panel)
{
gint x;
gint y;
gdk_window_get_pointer (spin->panel, &x, &y, NULL);
if (y <= widget->requisition.height / 2)
spin->in_child = GTK_ARROW_UP;
else
spin->in_child = GTK_ARROW_DOWN;
gtk_widget_queue_draw (GTK_WIDGET (spin));
}
if (GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->enter_notify_event)
return GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->enter_notify_event (widget, event);
return FALSE;
}
static gint
gtk_spin_button_leave_notify (GtkWidget *widget,
GdkEventCrossing *event)
{
GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
spin->in_child = NO_ARROW;
gtk_widget_queue_draw (GTK_WIDGET (spin));
if (GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->leave_notify_event)
return GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->leave_notify_event (widget, event);
return FALSE;
}
static gint
gtk_spin_button_focus_out (GtkWidget *widget,
GdkEventFocus *event)
{
if (GTK_ENTRY (widget)->editable)
gtk_spin_button_update (GTK_SPIN_BUTTON (widget));
return GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->focus_out_event (widget, event);
}
static void
gtk_spin_button_grab_notify (GtkWidget *widget,
gboolean was_grabbed)
{
GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
if (!was_grabbed)
{
gtk_spin_button_stop_spinning (spin);
gtk_widget_queue_draw (GTK_WIDGET (spin));
}
}
static void
gtk_spin_button_state_changed (GtkWidget *widget,
GtkStateType previous_state)
{
GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
if (!gtk_widget_is_sensitive (widget))
{
gtk_spin_button_stop_spinning (spin);
gtk_widget_queue_draw (GTK_WIDGET (spin));
}
}
static void
gtk_spin_button_style_set (GtkWidget *widget,
GtkStyle *previous_style)
{
GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
if (previous_style && gtk_widget_get_realized (widget))
gtk_style_set_background (widget->style, spin->panel, GTK_STATE_NORMAL);
GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->style_set (widget, previous_style);
}
static gint
gtk_spin_button_scroll (GtkWidget *widget,
GdkEventScroll *event)
{
GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
if (event->direction == GDK_SCROLL_UP)
{
if (!gtk_widget_has_focus (widget))
gtk_widget_grab_focus (widget);
gtk_spin_button_real_spin (spin, spin->adjustment->step_increment);
}
else if (event->direction == GDK_SCROLL_DOWN)
{
if (!gtk_widget_has_focus (widget))
gtk_widget_grab_focus (widget);
gtk_spin_button_real_spin (spin, -spin->adjustment->step_increment);
}
else
return FALSE;
return TRUE;
}
static void
gtk_spin_button_stop_spinning (GtkSpinButton *spin)
{
if (spin->timer)
{
g_source_remove (spin->timer);
spin->timer = 0;
spin->timer_calls = 0;
spin->need_timer = FALSE;
}
spin->button = 0;
spin->timer = 0;
spin->timer_step = spin->adjustment->step_increment;
spin->timer_calls = 0;
spin->click_child = NO_ARROW;
spin->button = 0;
}
static void
start_spinning (GtkSpinButton *spin,
GtkArrowType click_child,
gdouble step)
{
g_return_if_fail (click_child == GTK_ARROW_UP || click_child == GTK_ARROW_DOWN);
spin->click_child = click_child;
if (!spin->timer)
{
GtkSettings *settings = gtk_widget_get_settings (GTK_WIDGET (spin));
guint timeout;
g_object_get (settings, "gtk-timeout-initial", &timeout, NULL);
spin->timer_step = step;
spin->need_timer = TRUE;
spin->timer = gdk_threads_add_timeout (timeout,
(GSourceFunc) gtk_spin_button_timer,
(gpointer) spin);
}
gtk_spin_button_real_spin (spin, click_child == GTK_ARROW_UP ? step : -step);
gtk_widget_queue_draw (GTK_WIDGET (spin));
}
static gint
gtk_spin_button_button_press (GtkWidget *widget,
GdkEventButton *event)
{
GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
if (!spin->button)
{
if (event->window == spin->panel)
{
if (!gtk_widget_has_focus (widget))
gtk_widget_grab_focus (widget);
spin->button = event->button;
if (GTK_ENTRY (widget)->editable)
gtk_spin_button_update (spin);
if (event->y <= widget->requisition.height / 2)
{
if (event->button == 1)
start_spinning (spin, GTK_ARROW_UP, spin->adjustment->step_increment);
else if (event->button == 2)
start_spinning (spin, GTK_ARROW_UP, spin->adjustment->page_increment);
else
spin->click_child = GTK_ARROW_UP;
}
else
{
if (event->button == 1)
start_spinning (spin, GTK_ARROW_DOWN, spin->adjustment->step_increment);
else if (event->button == 2)
start_spinning (spin, GTK_ARROW_DOWN, spin->adjustment->page_increment);
else
spin->click_child = GTK_ARROW_DOWN;
}
return TRUE;
}
else
return GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->button_press_event (widget, event);
}
return FALSE;
}
static gint
gtk_spin_button_button_release (GtkWidget *widget,
GdkEventButton *event)
{
GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
gint arrow_size;
arrow_size = spin_button_get_arrow_size (spin);
if (event->button == spin->button)
{
int click_child = spin->click_child;
gtk_spin_button_stop_spinning (spin);
if (event->button == 3)
{
if (event->y >= 0 && event->x >= 0 &&
event->y <= widget->requisition.height &&
event->x <= arrow_size + 2 * widget->style->xthickness)
{
if (click_child == GTK_ARROW_UP &&
event->y <= widget->requisition.height / 2)
{
gdouble diff;
diff = spin->adjustment->upper - spin->adjustment->value;
if (diff > EPSILON)
gtk_spin_button_real_spin (spin, diff);
}
else if (click_child == GTK_ARROW_DOWN &&
event->y > widget->requisition.height / 2)
{
gdouble diff;
diff = spin->adjustment->value - spin->adjustment->lower;
if (diff > EPSILON)
gtk_spin_button_real_spin (spin, -diff);
}
}
}
gtk_widget_queue_draw (GTK_WIDGET (spin));
return TRUE;
}
else
return GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->button_release_event (widget, event);
}
static gint
gtk_spin_button_motion_notify (GtkWidget *widget,
GdkEventMotion *event)
{
GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
if (spin->button)
return FALSE;
if (event->window == spin->panel)
{
gint y = event->y;
gdk_event_request_motions (event);
if (y <= widget->requisition.height / 2 &&
spin->in_child == GTK_ARROW_DOWN)
{
spin->in_child = GTK_ARROW_UP;
gtk_widget_queue_draw (GTK_WIDGET (spin));
}
else if (y > widget->requisition.height / 2 &&
spin->in_child == GTK_ARROW_UP)
{
spin->in_child = GTK_ARROW_DOWN;
gtk_widget_queue_draw (GTK_WIDGET (spin));
}
return FALSE;
}
return GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->motion_notify_event (widget, event);
}
static gint
gtk_spin_button_timer (GtkSpinButton *spin_button)
{
gboolean retval = FALSE;
if (spin_button->timer)
{
if (spin_button->click_child == GTK_ARROW_UP)
gtk_spin_button_real_spin (spin_button, spin_button->timer_step);
else
gtk_spin_button_real_spin (spin_button, -spin_button->timer_step);
if (spin_button->need_timer)
{
GtkSettings *settings = gtk_widget_get_settings (GTK_WIDGET (spin_button));
guint timeout;
g_object_get (settings, "gtk-timeout-repeat", &timeout, NULL);
spin_button->need_timer = FALSE;
spin_button->timer = gdk_threads_add_timeout (timeout,
(GSourceFunc) gtk_spin_button_timer,
(gpointer) spin_button);
}
else
{
if (spin_button->climb_rate > 0.0 && spin_button->timer_step
< spin_button->adjustment->page_increment)
{
if (spin_button->timer_calls < MAX_TIMER_CALLS)
spin_button->timer_calls++;
else
{
spin_button->timer_calls = 0;
spin_button->timer_step += spin_button->climb_rate;
}
}
retval = TRUE;
}
}
return retval;
}
static void
gtk_spin_button_value_changed (GtkAdjustment *adjustment,
GtkSpinButton *spin_button)
{
gboolean return_val;
g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
return_val = FALSE;
g_signal_emit (spin_button, spinbutton_signals[OUTPUT], 0, &return_val);
if (return_val == FALSE)
gtk_spin_button_default_output (spin_button);
g_signal_emit (spin_button, spinbutton_signals[VALUE_CHANGED], 0);
gtk_widget_queue_draw (GTK_WIDGET (spin_button));
g_object_notify (G_OBJECT (spin_button), "value");
}
static void
gtk_spin_button_real_change_value (GtkSpinButton *spin,
GtkScrollType scroll)
{
gdouble old_value;
/* When the key binding is activated, there may be an outstanding
* value, so we first have to commit what is currently written in
* the spin buttons text entry. See #106574
*/
gtk_spin_button_update (spin);
old_value = spin->adjustment->value;
/* We don't test whether the entry is editable, since
* this key binding conceptually corresponds to changing
* the value with the buttons using the mouse, which
* we allow for non-editable spin buttons.
*/
switch (scroll)
{
case GTK_SCROLL_STEP_BACKWARD:
case GTK_SCROLL_STEP_DOWN:
case GTK_SCROLL_STEP_LEFT:
gtk_spin_button_real_spin (spin, -spin->timer_step);
if (spin->climb_rate > 0.0 && spin->timer_step
< spin->adjustment->page_increment)
{
if (spin->timer_calls < MAX_TIMER_CALLS)
spin->timer_calls++;
else
{
spin->timer_calls = 0;
spin->timer_step += spin->climb_rate;
}
}
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
< spin->adjustment->page_increment)
{
if (spin->timer_calls < MAX_TIMER_CALLS)
spin->timer_calls++;
else
{
spin->timer_calls = 0;
spin->timer_step += spin->climb_rate;
}
}
break;
case GTK_SCROLL_PAGE_BACKWARD:
case GTK_SCROLL_PAGE_DOWN:
case GTK_SCROLL_PAGE_LEFT:
gtk_spin_button_real_spin (spin, -spin->adjustment->page_increment);
break;
case GTK_SCROLL_PAGE_FORWARD:
case GTK_SCROLL_PAGE_UP:
case GTK_SCROLL_PAGE_RIGHT:
gtk_spin_button_real_spin (spin, spin->adjustment->page_increment);
break;
case GTK_SCROLL_START:
{
gdouble diff = spin->adjustment->value - spin->adjustment->lower;
if (diff > EPSILON)
gtk_spin_button_real_spin (spin, -diff);
break;
}
case GTK_SCROLL_END:
{
gdouble diff = spin->adjustment->upper - spin->adjustment->value;
if (diff > EPSILON)
gtk_spin_button_real_spin (spin, diff);
break;
}
default:
g_warning ("Invalid scroll type %d for GtkSpinButton::change-value", scroll);
break;
}
gtk_spin_button_update (spin);
if (spin->adjustment->value == old_value)
gtk_widget_error_bell (GTK_WIDGET (spin));
}
static gint
gtk_spin_button_key_release (GtkWidget *widget,
GdkEventKey *event)
{
GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
/* We only get a release at the end of a key repeat run, so reset the timer_step */
spin->timer_step = spin->adjustment->step_increment;
spin->timer_calls = 0;
return TRUE;
}
static void
gtk_spin_button_snap (GtkSpinButton *spin_button,
gdouble val)
{
gdouble inc;
gdouble tmp;
inc = spin_button->adjustment->step_increment;
if (inc == 0)
return;
tmp = (val - spin_button->adjustment->lower) / inc;
if (tmp - floor (tmp) < ceil (tmp) - tmp)
val = spin_button->adjustment->lower + floor (tmp) * inc;
else
val = spin_button->adjustment->lower + ceil (tmp) * inc;
gtk_spin_button_set_value (spin_button, val);
}
static void
gtk_spin_button_activate (GtkEntry *entry)
{
if (entry->editable)
gtk_spin_button_update (GTK_SPIN_BUTTON (entry));
/* Chain up so that entry->activates_default is honored */
GTK_ENTRY_CLASS (gtk_spin_button_parent_class)->activate (entry);
}
static void
gtk_spin_button_get_text_area_size (GtkEntry *entry,
gint *x,
gint *y,
gint *width,
gint *height)
{
gint arrow_size;
gint panel_width;
GTK_ENTRY_CLASS (gtk_spin_button_parent_class)->get_text_area_size (entry, x, y, width, height);
arrow_size = spin_button_get_arrow_size (GTK_SPIN_BUTTON (entry));
panel_width = arrow_size + 2 * GTK_WIDGET (entry)->style->xthickness;
if (width)
*width -= panel_width;
if (gtk_widget_get_direction (GTK_WIDGET (entry)) == GTK_TEXT_DIR_RTL && x)
*x += panel_width;
}
static void
gtk_spin_button_insert_text (GtkEditable *editable,
const gchar *new_text,
gint new_text_length,
gint *position)
{
GtkEntry *entry = GTK_ENTRY (editable);
GtkSpinButton *spin = GTK_SPIN_BUTTON (editable);
GtkEditableClass *parent_editable_iface = g_type_interface_peek (gtk_spin_button_parent_class, GTK_TYPE_EDITABLE);
if (spin->numeric)
{
struct lconv *lc;
gboolean sign;
gint dotpos = -1;
gint i;
GdkWChar pos_sign;
GdkWChar neg_sign;
gint entry_length;
const gchar *entry_text;
entry_length = gtk_entry_get_text_length (entry);
entry_text = gtk_entry_get_text (entry);
lc = localeconv ();
if (*(lc->negative_sign))
neg_sign = *(lc->negative_sign);
else
neg_sign = '-';
if (*(lc->positive_sign))
pos_sign = *(lc->positive_sign);
else
pos_sign = '+';
#ifdef G_OS_WIN32
/* Workaround for bug caused by some Windows application messing
* up the positive sign of the current locale, more specifically
* HKEY_CURRENT_USER\Control Panel\International\sPositiveSign.
* See bug #330743 and for instance
* http://www.msnewsgroups.net/group/microsoft.public.dotnet.languages.csharp/topic36024.aspx
*
* I don't know if the positive sign always gets bogusly set to
* a digit when the above Registry value is corrupted as
* described. (In my test case, it got set to "8", and in the
* bug report above it presumably was set ot "0".) Probably it
* might get set to almost anything? So how to distinguish a
* bogus value from some correct one for some locale? That is
* probably hard, but at least we should filter out the
* digits...
*/
if (pos_sign >= '0' && pos_sign <= '9')
pos_sign = '+';
#endif
for (sign=0, i=0; i<entry_length; i++)
if ((entry_text[i] == neg_sign) ||
(entry_text[i] == pos_sign))
{
sign = 1;
break;
}
if (sign && !(*position))
return;
for (dotpos=-1, i=0; i<entry_length; i++)
if (entry_text[i] == *(lc->decimal_point))
{
dotpos = i;
break;
}
if (dotpos > -1 && *position > dotpos &&
(gint)spin->digits - entry_length
+ dotpos - new_text_length + 1 < 0)
return;
for (i = 0; i < new_text_length; i++)
{
if (new_text[i] == neg_sign || new_text[i] == pos_sign)
{
if (sign || (*position) || i)
return;
sign = TRUE;
}
else if (new_text[i] == *(lc->decimal_point))
{
if (!spin->digits || dotpos > -1 ||
(new_text_length - 1 - i + entry_length
- *position > (gint)spin->digits))
return;
dotpos = *position + i;
}
else if (new_text[i] < 0x30 || new_text[i] > 0x39)
return;
}
}
parent_editable_iface->insert_text (editable, new_text,
new_text_length, position);
}
static void
gtk_spin_button_real_spin (GtkSpinButton *spin_button,
gdouble increment)
{
GtkAdjustment *adj;
gdouble new_value = 0.0;
gboolean wrapped = FALSE;
adj = spin_button->adjustment;
new_value = adj->value + increment;
if (increment > 0)
{
if (spin_button->wrap)
{
if (fabs (adj->value - adj->upper) < EPSILON)
{
new_value = adj->lower;
wrapped = TRUE;
}
else if (new_value > adj->upper)
new_value = adj->upper;
}
else
new_value = MIN (new_value, adj->upper);
}
else if (increment < 0)
{
if (spin_button->wrap)
{
if (fabs (adj->value - adj->lower) < EPSILON)
{
new_value = adj->upper;
wrapped = TRUE;
}
else if (new_value < adj->lower)
new_value = adj->lower;
}
else
new_value = MAX (new_value, adj->lower);
}
if (fabs (new_value - adj->value) > EPSILON)
gtk_adjustment_set_value (adj, new_value);
if (wrapped)
g_signal_emit (spin_button, spinbutton_signals[WRAPPED], 0);
gtk_widget_queue_draw (GTK_WIDGET (spin_button));
}
static gint
gtk_spin_button_default_input (GtkSpinButton *spin_button,
gdouble *new_val)
{
gchar *err = NULL;
*new_val = g_strtod (gtk_entry_get_text (GTK_ENTRY (spin_button)), &err);
if (*err)
return GTK_INPUT_ERROR;
else
return FALSE;
}
static gint
gtk_spin_button_default_output (GtkSpinButton *spin_button)
{
gchar *buf = g_strdup_printf ("%0.*f", spin_button->digits, spin_button->adjustment->value);
if (strcmp (buf, gtk_entry_get_text (GTK_ENTRY (spin_button))))
gtk_entry_set_text (GTK_ENTRY (spin_button), buf);
g_free (buf);
return FALSE;
}
/***********************************************************
***********************************************************
*** Public interface ***
***********************************************************
***********************************************************/
/**
* gtk_spin_button_configure:
* @spin_button: a #GtkSpinButton
* @adjustment: (allow-none): a #GtkAdjustment.
* @climb_rate: the new climb rate.
* @digits: the number of decimal places to display in the spin button.
*
* Changes the properties of an existing spin button. The adjustment, climb rate,
* and number of decimal places are all changed accordingly, after this function call.
*/
void
gtk_spin_button_configure (GtkSpinButton *spin_button,
GtkAdjustment *adjustment,
gdouble climb_rate,
guint digits)
{
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
if (adjustment)
gtk_spin_button_set_adjustment (spin_button, adjustment);
else
adjustment = spin_button->adjustment;
g_object_freeze_notify (G_OBJECT (spin_button));
if (spin_button->digits != digits)
{
spin_button->digits = digits;
g_object_notify (G_OBJECT (spin_button), "digits");
}
if (spin_button->climb_rate != climb_rate)
{
spin_button->climb_rate = climb_rate;
g_object_notify (G_OBJECT (spin_button), "climb-rate");
}
g_object_thaw_notify (G_OBJECT (spin_button));
gtk_adjustment_value_changed (adjustment);
}
GtkWidget *
gtk_spin_button_new (GtkAdjustment *adjustment,
gdouble climb_rate,
guint digits)
{
GtkSpinButton *spin;
if (adjustment)
g_return_val_if_fail (GTK_IS_ADJUSTMENT (adjustment), NULL);
spin = g_object_new (GTK_TYPE_SPIN_BUTTON, NULL);
gtk_spin_button_configure (spin, adjustment, climb_rate, digits);
return GTK_WIDGET (spin);
}
/**
* gtk_spin_button_new_with_range:
* @min: Minimum allowable value
* @max: Maximum allowable value
* @step: Increment added or subtracted by spinning the widget
*
* This is a convenience constructor that allows creation of a numeric
* #GtkSpinButton without manually creating an adjustment. The value is
* initially set to the minimum value and a page increment of 10 * @step
* is the default. The precision of the spin button is equivalent to the
* precision of @step.
*
* Note that the way in which the precision is derived works best if @step
* is a power of ten. If the resulting precision is not suitable for your
* needs, use gtk_spin_button_set_digits() to correct it.
*
* Return value: The new spin button as a #GtkWidget.
**/
GtkWidget *
gtk_spin_button_new_with_range (gdouble min,
gdouble max,
gdouble step)
{
GtkObject *adj;
GtkSpinButton *spin;
gint digits;
g_return_val_if_fail (min <= max, NULL);
g_return_val_if_fail (step != 0.0, NULL);
spin = g_object_new (GTK_TYPE_SPIN_BUTTON, NULL);
adj = gtk_adjustment_new (min, min, max, step, 10 * step, 0);
if (fabs (step) >= 1.0 || step == 0.0)
digits = 0;
else {
digits = abs ((gint) floor (log10 (fabs (step))));
if (digits > MAX_DIGITS)
digits = MAX_DIGITS;
}
gtk_spin_button_configure (spin, GTK_ADJUSTMENT (adj), step, digits);
gtk_spin_button_set_numeric (spin, TRUE);
return GTK_WIDGET (spin);
}
/* Callback used when the spin button's adjustment changes. We need to redraw
* the arrows when the adjustment's range changes, and reevaluate our size request.
*/
static void
adjustment_changed_cb (GtkAdjustment *adjustment, gpointer data)
{
GtkSpinButton *spin_button;
spin_button = GTK_SPIN_BUTTON (data);
spin_button->timer_step = spin_button->adjustment->step_increment;
gtk_widget_queue_resize (GTK_WIDGET (spin_button));
}
/**
* gtk_spin_button_set_adjustment:
* @spin_button: a #GtkSpinButton
* @adjustment: a #GtkAdjustment to replace the existing adjustment
*
* Replaces the #GtkAdjustment associated with @spin_button.
**/
void
gtk_spin_button_set_adjustment (GtkSpinButton *spin_button,
GtkAdjustment *adjustment)
{
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
if (spin_button->adjustment != adjustment)
{
if (spin_button->adjustment)
{
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_object_unref (spin_button->adjustment);
}
spin_button->adjustment = adjustment;
if (adjustment)
{
g_object_ref_sink (adjustment);
g_signal_connect (adjustment, "value-changed",
G_CALLBACK (gtk_spin_button_value_changed),
spin_button);
g_signal_connect (adjustment, "changed",
G_CALLBACK (adjustment_changed_cb),
spin_button);
spin_button->timer_step = spin_button->adjustment->step_increment;
}
gtk_widget_queue_resize (GTK_WIDGET (spin_button));
}
g_object_notify (G_OBJECT (spin_button), "adjustment");
}
/**
* gtk_spin_button_get_adjustment:
* @spin_button: a #GtkSpinButton
*
* Get the adjustment associated with a #GtkSpinButton
*
* Return value: 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 (G_OBJECT (spin_button), "digits");
/* since lower/upper may have changed */
gtk_widget_queue_resize (GTK_WIDGET (spin_button));
}
}
/**
* gtk_spin_button_get_digits:
* @spin_button: a #GtkSpinButton
*
* Fetches the precision of @spin_button. See gtk_spin_button_set_digits().
*
* Returns: the current precision
**/
guint
gtk_spin_button_get_digits (GtkSpinButton *spin_button)
{
g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spin_button), 0);
return spin_button->digits;
}
/**
* gtk_spin_button_set_increments:
* @spin_button: a #GtkSpinButton
* @step: increment applied for a button 1 press.
* @page: increment applied for a button 2 press.
*
* Sets the step and page increments for spin_button. This affects how
* quickly the value changes when the spin button's arrows are activated.
**/
void
gtk_spin_button_set_increments (GtkSpinButton *spin_button,
gdouble step,
gdouble page)
{
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
spin_button->adjustment->step_increment = step;
spin_button->adjustment->page_increment = page;
}
/**
* gtk_spin_button_get_increments:
* @spin_button: a #GtkSpinButton
* @step: (allow-none): location to store step increment, or %NULL
* @page: (allow-none): location to store page increment, or %NULL
*
* Gets the current step and page the increments used by @spin_button. See
* gtk_spin_button_set_increments().
**/
void
gtk_spin_button_get_increments (GtkSpinButton *spin_button,
gdouble *step,
gdouble *page)
{
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
if (step)
*step = spin_button->adjustment->step_increment;
if (page)
*page = spin_button->adjustment->page_increment;
}
/**
* gtk_spin_button_set_range:
* @spin_button: a #GtkSpinButton
* @min: minimum allowable value
* @max: maximum allowable value
*
* Sets the minimum and maximum allowable values for @spin_button
**/
void
gtk_spin_button_set_range (GtkSpinButton *spin_button,
gdouble min,
gdouble max)
{
gdouble value;
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
spin_button->adjustment->lower = min;
spin_button->adjustment->upper = max;
value = CLAMP (spin_button->adjustment->value,
spin_button->adjustment->lower,
(spin_button->adjustment->upper - spin_button->adjustment->page_size));
if (value != spin_button->adjustment->value)
gtk_spin_button_set_value (spin_button, value);
gtk_adjustment_changed (spin_button->adjustment);
}
/**
* gtk_spin_button_get_range:
* @spin_button: a #GtkSpinButton
* @min: (allow-none): location to store minimum allowed value, or %NULL
* @max: (allow-none): location to store maximum allowed value, or %NULL
*
* Gets the range allowed for @spin_button. See
* gtk_spin_button_set_range().
**/
void
gtk_spin_button_get_range (GtkSpinButton *spin_button,
gdouble *min,
gdouble *max)
{
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
if (min)
*min = spin_button->adjustment->lower;
if (max)
*max = spin_button->adjustment->upper;
}
/**
* gtk_spin_button_get_value:
* @spin_button: a #GtkSpinButton
*
* Get the value in the @spin_button.
*
* Return value: the value of @spin_button
**/
gdouble
gtk_spin_button_get_value (GtkSpinButton *spin_button)
{
g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spin_button), 0.0);
return spin_button->adjustment->value;
}
/**
* gtk_spin_button_get_value_as_int:
* @spin_button: a #GtkSpinButton
*
* Get the value @spin_button represented as an integer.
*
* Return value: the value of @spin_button
**/
gint
gtk_spin_button_get_value_as_int (GtkSpinButton *spin_button)
{
gdouble val;
g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spin_button), 0);
val = spin_button->adjustment->value;
if (val - floor (val) < ceil (val) - val)
return floor (val);
else
return ceil (val);
}
/**
* gtk_spin_button_set_value:
* @spin_button: a #GtkSpinButton
* @value: the new value
*
* Set the value of @spin_button.
**/
void
gtk_spin_button_set_value (GtkSpinButton *spin_button,
gdouble value)
{
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
if (fabs (value - spin_button->adjustment->value) > EPSILON)
gtk_adjustment_set_value (spin_button->adjustment, value);
else
{
gint return_val = FALSE;
g_signal_emit (spin_button, spinbutton_signals[OUTPUT], 0, &return_val);
if (return_val == FALSE)
gtk_spin_button_default_output (spin_button);
}
}
/**
* gtk_spin_button_set_update_policy:
* @spin_button: a #GtkSpinButton
* @policy: a #GtkSpinButtonUpdatePolicy value
*
* Sets the update behavior of a spin button. This determines whether the
* spin button is always updated or only when a valid value is set.
**/
void
gtk_spin_button_set_update_policy (GtkSpinButton *spin_button,
GtkSpinButtonUpdatePolicy policy)
{
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
if (spin_button->update_policy != policy)
{
spin_button->update_policy = policy;
g_object_notify (G_OBJECT (spin_button), "update-policy");
}
}
/**
* gtk_spin_button_get_update_policy:
* @spin_button: a #GtkSpinButton
*
* Gets the update behavior of a spin button. See
* gtk_spin_button_set_update_policy().
*
* Return value: the current update policy
**/
GtkSpinButtonUpdatePolicy
gtk_spin_button_get_update_policy (GtkSpinButton *spin_button)
{
g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spin_button), GTK_UPDATE_ALWAYS);
return spin_button->update_policy;
}
/**
* gtk_spin_button_set_numeric:
* @spin_button: a #GtkSpinButton
* @numeric: flag indicating if only numeric entry is allowed.
*
* Sets the flag that determines if non-numeric text can be typed into
* the spin button.
**/
void
gtk_spin_button_set_numeric (GtkSpinButton *spin_button,
gboolean numeric)
{
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
numeric = numeric != FALSE;
if (spin_button->numeric != numeric)
{
spin_button->numeric = numeric;
g_object_notify (G_OBJECT (spin_button), "numeric");
}
}
/**
* gtk_spin_button_get_numeric:
* @spin_button: a #GtkSpinButton
*
* Returns whether non-numeric text can be typed into the spin button.
* See gtk_spin_button_set_numeric().
*
* Return value: %TRUE if only numeric text can be entered
**/
gboolean
gtk_spin_button_get_numeric (GtkSpinButton *spin_button)
{
g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spin_button), FALSE);
return spin_button->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 != 0);
g_object_notify (G_OBJECT (spin_button), "wrap");
}
}
/**
* gtk_spin_button_get_wrap:
* @spin_button: a #GtkSpinButton
*
* Returns whether the spin button's value wraps around to the
* opposite limit when the upper or lower limit of the range is
* exceeded. See gtk_spin_button_set_wrap().
*
* Return value: %TRUE if the spin button wraps around
**/
gboolean
gtk_spin_button_get_wrap (GtkSpinButton *spin_button)
{
g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spin_button), FALSE);
return spin_button->wrap;
}
static gint
spin_button_get_arrow_size (GtkSpinButton *spin_button)
{
gint size = pango_font_description_get_size (GTK_WIDGET (spin_button)->style->font_desc);
gint arrow_size;
arrow_size = MAX (PANGO_PIXELS (size), MIN_ARROW_WIDTH);
return arrow_size - arrow_size % 2; /* force even */
}
/**
* spin_button_get_shadow_type:
* @spin_button: a #GtkSpinButton
*
* Convenience function to Get the shadow type from the underlying widget's
* style.
*
* Return value: the #GtkShadowType
**/
static gint
spin_button_get_shadow_type (GtkSpinButton *spin_button)
{
GtkShadowType rc_shadow_type;
gtk_widget_style_get (GTK_WIDGET (spin_button), "shadow-type", &rc_shadow_type, NULL);
return rc_shadow_type;
}
/**
* gtk_spin_button_set_snap_to_ticks:
* @spin_button: a #GtkSpinButton
* @snap_to_ticks: a flag indicating if invalid values should be corrected.
*
* Sets the policy as to whether values are corrected to the nearest step
* increment when a spin button is activated after providing an invalid value.
**/
void
gtk_spin_button_set_snap_to_ticks (GtkSpinButton *spin_button,
gboolean snap_to_ticks)
{
guint new_val;
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
new_val = (snap_to_ticks != 0);
if (new_val != spin_button->snap_to_ticks)
{
spin_button->snap_to_ticks = new_val;
if (new_val && GTK_ENTRY (spin_button)->editable)
gtk_spin_button_update (spin_button);
g_object_notify (G_OBJECT (spin_button), "snap-to-ticks");
}
}
/**
* gtk_spin_button_get_snap_to_ticks:
* @spin_button: a #GtkSpinButton
*
* Returns whether the values are corrected to the nearest step. See
* gtk_spin_button_set_snap_to_ticks().
*
* Return value: %TRUE if values are snapped to the nearest step.
**/
gboolean
gtk_spin_button_get_snap_to_ticks (GtkSpinButton *spin_button)
{
g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spin_button), FALSE);
return spin_button->snap_to_ticks;
}
/**
* gtk_spin_button_spin:
* @spin_button: a #GtkSpinButton
* @direction: a #GtkSpinType indicating the direction to spin.
* @increment: step increment to apply in the specified direction.
*
* Increment or decrement a spin button's value in a specified direction
* by a specified amount.
**/
void
gtk_spin_button_spin (GtkSpinButton *spin_button,
GtkSpinType direction,
gdouble increment)
{
GtkAdjustment *adj;
gdouble diff;
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
adj = spin_button->adjustment;
/* for compatibility with the 1.0.x version of this function */
if (increment != 0 && increment != adj->step_increment &&
(direction == GTK_SPIN_STEP_FORWARD ||
direction == GTK_SPIN_STEP_BACKWARD))
{
if (direction == GTK_SPIN_STEP_BACKWARD && increment > 0)
increment = -increment;
direction = GTK_SPIN_USER_DEFINED;
}
switch (direction)
{
case GTK_SPIN_STEP_FORWARD:
gtk_spin_button_real_spin (spin_button, adj->step_increment);
break;
case GTK_SPIN_STEP_BACKWARD:
gtk_spin_button_real_spin (spin_button, -adj->step_increment);
break;
case GTK_SPIN_PAGE_FORWARD:
gtk_spin_button_real_spin (spin_button, adj->page_increment);
break;
case GTK_SPIN_PAGE_BACKWARD:
gtk_spin_button_real_spin (spin_button, -adj->page_increment);
break;
case GTK_SPIN_HOME:
diff = adj->value - adj->lower;
if (diff > EPSILON)
gtk_spin_button_real_spin (spin_button, -diff);
break;
case GTK_SPIN_END:
diff = adj->upper - adj->value;
if (diff > EPSILON)
gtk_spin_button_real_spin (spin_button, diff);
break;
case GTK_SPIN_USER_DEFINED:
if (increment != 0)
gtk_spin_button_real_spin (spin_button, increment);
break;
default:
break;
}
}
/**
* gtk_spin_button_update:
* @spin_button: a #GtkSpinButton
*
* Manually force an update of the spin button.
**/
void
gtk_spin_button_update (GtkSpinButton *spin_button)
{
gdouble val;
gint error = 0;
gint return_val;
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
return_val = FALSE;
g_signal_emit (spin_button, spinbutton_signals[INPUT], 0, &val, &return_val);
if (return_val == FALSE)
{
return_val = gtk_spin_button_default_input (spin_button, &val);
error = (return_val == GTK_INPUT_ERROR);
}
else if (return_val == GTK_INPUT_ERROR)
error = 1;
gtk_widget_queue_draw (GTK_WIDGET (spin_button));
if (spin_button->update_policy == GTK_UPDATE_ALWAYS)
{
if (val < spin_button->adjustment->lower)
val = spin_button->adjustment->lower;
else if (val > spin_button->adjustment->upper)
val = spin_button->adjustment->upper;
}
else if ((spin_button->update_policy == GTK_UPDATE_IF_VALID) &&
(error ||
val < spin_button->adjustment->lower ||
val > spin_button->adjustment->upper))
{
gtk_spin_button_value_changed (spin_button->adjustment, spin_button);
return;
}
if (spin_button->snap_to_ticks)
gtk_spin_button_snap (spin_button, val);
else
gtk_spin_button_set_value (spin_button, val);
}
#define __GTK_SPIN_BUTTON_C__
#include "gtkaliasdef.c"
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