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6b27f20668f0d367aec9e89976ed8158145fef06
gtk3/gtk/gtkspinbutton.c
Matthias Clasen 171d43b206 Make spinbuttons work with negative increments. (#137975, Tim Gerla) 
2004-04-22  Matthias Clasen  <mclasen@redhat.com>

	* gtk/gtkspinbutton.c (spin_button_at_limit): Make spinbuttons
	work with negative increments.  (#137975, Tim Gerla)
2004-04-22 13:49:27 +00:00

2287 lines
62 KiB
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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 "gtkmain.h"
#include "gtkmarshalers.h"
#include "gtksettings.h"
#include "gtkintl.h"
#define MIN_SPIN_BUTTON_WIDTH 30
#define SPIN_BUTTON_INITIAL_TIMER_DELAY 200
#define SPIN_BUTTON_TIMER_DELAY 20
#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,
LAST_SIGNAL
};
static void gtk_spin_button_class_init (GtkSpinButtonClass *klass);
static void gtk_spin_button_editable_init (GtkEditableClass *iface);
static void gtk_spin_button_init (GtkSpinButton *spin_button);
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_draw_arrow (GtkSpinButton *spin_button,
GtkArrowType arrow_type);
static gint 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_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 void spin_button_redraw (GtkSpinButton *spin_button);
static GtkEntryClass *parent_class = NULL;
static guint spinbutton_signals[LAST_SIGNAL] = {0};
#define NO_ARROW 2
GType
gtk_spin_button_get_type (void)
{
static GType spin_button_type = 0;
if (!spin_button_type)
{
static const GTypeInfo spin_button_info =
{
sizeof (GtkSpinButtonClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) gtk_spin_button_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GtkSpinButton),
0, /* n_preallocs */
(GInstanceInitFunc) gtk_spin_button_init,
};
static const GInterfaceInfo editable_info =
{
(GInterfaceInitFunc) gtk_spin_button_editable_init, /* interface_init */
NULL, /* interface_finalize */
NULL /* interface_data */
};
spin_button_type =
g_type_register_static (GTK_TYPE_ENTRY, "GtkSpinButton",
&spin_button_info, 0);
g_type_add_interface_static (spin_button_type,
GTK_TYPE_EDITABLE,
&editable_info);
}
return spin_button_type;
}
#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;
GtkWidgetClass *widget_class;
GtkEntryClass *entry_class;
GtkBindingSet *binding_set;
object_class = (GtkObjectClass*) class;
widget_class = (GtkWidgetClass*) class;
entry_class = (GtkEntryClass*) class;
parent_class = g_type_class_peek_parent (class);
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;
entry_class->activate = gtk_spin_button_activate;
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,
G_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,
G_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,
G_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,
G_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,
G_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,
G_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,
G_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,
G_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,
G_PARAM_READABLE),
gtk_rc_property_parse_enum);
spinbutton_signals[INPUT] =
g_signal_new ("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);
spinbutton_signals[OUTPUT] =
g_signal_new ("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 ("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);
/* Action signals */
spinbutton_signals[CHANGE_VALUE] =
g_signal_new ("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;
spin_button = GTK_SPIN_BUTTON (object);
switch (prop_id)
{
GtkAdjustment *adjustment;
case PROP_ADJUSTMENT:
adjustment = GTK_ADJUSTMENT (g_value_get_object (value));
if (!adjustment)
adjustment = (GtkAdjustment*) gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
gtk_spin_button_set_adjustment (spin_button, adjustment);
break;
case PROP_CLIMB_RATE:
gtk_spin_button_configure (spin_button,
spin_button->adjustment,
g_value_get_double (value),
spin_button->digits);
break;
case PROP_DIGITS:
gtk_spin_button_configure (spin_button,
spin_button->adjustment,
spin_button->climb_rate,
g_value_get_uint (value));
break;
case PROP_SNAP_TO_TICKS:
gtk_spin_button_set_snap_to_ticks (spin_button, g_value_get_boolean (value));
break;
case PROP_NUMERIC:
gtk_spin_button_set_numeric (spin_button, g_value_get_boolean (value));
break;
case PROP_WRAP:
gtk_spin_button_set_wrap (spin_button, g_value_get_boolean (value));
break;
case PROP_UPDATE_POLICY:
gtk_spin_button_set_update_policy (spin_button, g_value_get_enum (value));
break;
case PROP_VALUE:
gtk_spin_button_set_value (spin_button, g_value_get_double (value));
break;
default:
break;
}
}
static void
gtk_spin_button_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkSpinButton *spin_button;
spin_button = GTK_SPIN_BUTTON (object);
switch (prop_id)
{
case PROP_ADJUSTMENT:
g_value_set_object (value, 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 (parent_class)->finalize (object);
}
static void
gtk_spin_button_destroy (GtkObject *object)
{
gtk_spin_button_stop_spinning (GTK_SPIN_BUTTON (object));
GTK_OBJECT_CLASS (parent_class)->destroy (object);
}
static void
gtk_spin_button_map (GtkWidget *widget)
{
if (GTK_WIDGET_REALIZED (widget) && !GTK_WIDGET_MAPPED (widget))
{
GTK_WIDGET_CLASS (parent_class)->map (widget);
gdk_window_show (GTK_SPIN_BUTTON (widget)->panel);
}
}
static void
gtk_spin_button_unmap (GtkWidget *widget)
{
if (GTK_WIDGET_MAPPED (widget))
{
gdk_window_hide (GTK_SPIN_BUTTON (widget)->panel);
GTK_WIDGET_CLASS (parent_class)->unmap (widget);
}
}
static void
gtk_spin_button_realize (GtkWidget *widget)
{
GtkSpinButton *spin_button;
GdkWindowAttr attributes;
gint attributes_mask;
guint real_width;
gboolean return_val;
gint arrow_size;
spin_button = GTK_SPIN_BUTTON (widget);
arrow_size = spin_button_get_arrow_size (spin_button);
real_width = widget->allocation.width;
widget->allocation.width -= arrow_size + 2 * widget->style->xthickness;
gtk_widget_set_events (widget, gtk_widget_get_events (widget) |
GDK_KEY_RELEASE_MASK);
GTK_WIDGET_CLASS (parent_class)->realize (widget);
widget->allocation.width = real_width;
attributes.window_type = GDK_WINDOW_CHILD;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.visual = gtk_widget_get_visual (widget);
attributes.colormap = gtk_widget_get_colormap (widget);
attributes.event_mask = gtk_widget_get_events (widget);
attributes.event_mask |= GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_MASK
| GDK_BUTTON_RELEASE_MASK | GDK_LEAVE_NOTIFY_MASK | GDK_ENTER_NOTIFY_MASK
| GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK;
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
attributes.x = (widget->allocation.x +
widget->allocation.width - arrow_size -
2 * widget->style->xthickness);
attributes.y = widget->allocation.y + (widget->allocation.height -
widget->requisition.height) / 2;
attributes.width = arrow_size + 2 * widget->style->xthickness;
attributes.height = widget->requisition.height;
spin_button->panel = gdk_window_new (gtk_widget_get_parent_window (widget),
&attributes, attributes_mask);
gdk_window_set_user_data (spin_button->panel, widget);
gtk_style_set_background (widget->style, spin_button->panel, GTK_STATE_NORMAL);
return_val = FALSE;
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 (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;
}
/* Keep in sync with gtkentry.c !
*/
static void
get_borders (GtkEntry *entry,
gint *xborder,
gint *yborder)
{
GtkWidget *widget = GTK_WIDGET (entry);
gint focus_width;
gboolean interior_focus;
gtk_widget_style_get (widget,
"interior-focus", &interior_focus,
"focus-line-width", &focus_width,
NULL);
if (entry->has_frame)
{
*xborder = widget->style->xthickness;
*yborder = widget->style->ythickness;
}
else
{
*xborder = 0;
*yborder = 0;
}
if (!interior_focus)
{
*xborder += focus_width;
*yborder += focus_width;
}
}
static void
gtk_spin_button_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
GtkEntry *entry;
GtkSpinButton *spin_button;
gint arrow_size;
entry = GTK_ENTRY (widget);
spin_button = GTK_SPIN_BUTTON (widget);
arrow_size = spin_button_get_arrow_size (spin_button);
GTK_WIDGET_CLASS (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;
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);
get_borders (entry, &xborder, &yborder);
xborder += 2; /* INNER_BORDER */
requisition->width = width + xborder * 2;
}
requisition->width += arrow_size + 2 * widget->style->xthickness;
}
static void
gtk_spin_button_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkSpinButton *spin;
GtkAllocation entry_allocation;
GtkAllocation panel_allocation;
gint arrow_size;
gint panel_width;
g_return_if_fail (GTK_IS_SPIN_BUTTON (widget));
g_return_if_fail (allocation != NULL);
spin = GTK_SPIN_BUTTON (widget);
arrow_size = spin_button_get_arrow_size (spin);
panel_width = arrow_size + 2 * widget->style->xthickness;
widget->allocation = *allocation;
entry_allocation = *allocation;
entry_allocation.width -= panel_width;
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
{
entry_allocation.x += panel_width;
panel_allocation.x = allocation->x;
}
else
{
panel_allocation.x = allocation->x + allocation->width - panel_width;
}
panel_allocation.width = panel_width;
panel_allocation.height = MIN (widget->requisition.height, allocation->height);
panel_allocation.y = allocation->y + (allocation->height -
panel_allocation.height) / 2;
GTK_WIDGET_CLASS (parent_class)->size_allocate (widget, &entry_allocation);
if (GTK_WIDGET_REALIZED (widget))
{
gdk_window_move_resize (GTK_SPIN_BUTTON (widget)->panel,
panel_allocation.x,
panel_allocation.y,
panel_allocation.width,
panel_allocation.height);
}
spin_button_redraw (spin);
}
static gint
gtk_spin_button_expose (GtkWidget *widget,
GdkEventExpose *event)
{
GtkSpinButton *spin;
g_return_val_if_fail (GTK_IS_SPIN_BUTTON (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
spin = GTK_SPIN_BUTTON (widget);
if (GTK_WIDGET_DRAWABLE (widget))
{
GtkShadowType shadow_type;
GdkRectangle rect;
if (event->window != spin->panel)
GTK_WIDGET_CLASS (parent_class)->expose_event (widget, event);
/* we redraw the panel even if it wasn't exposed. This is
* because spin->panel is not a child window of widget->window,
* so it will not be invalidated by eg. gtk_widget_queue_draw().
*/
rect.x = 0;
rect.y = 0;
gdk_drawable_get_size (spin->panel, &rect.width, &rect.height);
shadow_type = spin_button_get_shadow_type (spin);
gdk_window_begin_paint_rect (spin->panel, &rect);
if (shadow_type != GTK_SHADOW_NONE)
{
gtk_paint_box (widget->style, spin->panel,
GTK_STATE_NORMAL, shadow_type,
NULL, widget, "spinbutton",
rect.x, rect.y, rect.width, rect.height);
}
gtk_spin_button_draw_arrow (spin, GTK_ARROW_UP);
gtk_spin_button_draw_arrow (spin, GTK_ARROW_DOWN);
gdk_window_end_paint (spin->panel);
}
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,
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 (GTK_IS_SPIN_BUTTON (spin_button));
g_return_if_fail (arrow_type == GTK_ARROW_UP || arrow_type == GTK_ARROW_DOWN);
widget = GTK_WIDGET (spin_button);
if (GTK_WIDGET_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_STATE (widget);
}
shadow_type = GTK_SHADOW_OUT;
}
}
gtk_paint_box (widget->style, spin_button->panel,
state_type, shadow_type,
NULL, 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,
NULL, 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;
spin_button_redraw (spin);
}
return FALSE;
}
static gint
gtk_spin_button_leave_notify (GtkWidget *widget,
GdkEventCrossing *event)
{
GtkSpinButton *spin = GTK_SPIN_BUTTON (widget);
spin->in_child = NO_ARROW;
spin_button_redraw (spin);
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 (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);
spin_button_redraw (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);
spin_button_redraw (spin);
}
}
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;
gtk_spin_button_real_spin (spin, click_child == GTK_ARROW_UP ? step : -step);
if (!spin->timer)
{
spin->timer_step = step;
spin->need_timer = TRUE;
spin->timer = g_timeout_add (SPIN_BUTTON_INITIAL_TIMER_DELAY,
(GSourceFunc) gtk_spin_button_timer,
(gpointer) spin);
}
spin_button_redraw (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 (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);
}
}
}
spin_button_redraw (spin);
return TRUE;
}
else
return GTK_WIDGET_CLASS (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;
gdk_window_get_pointer (spin->panel, NULL, &y, NULL);
if (y <= widget->requisition.height / 2 &&
spin->in_child == GTK_ARROW_DOWN)
{
spin->in_child = GTK_ARROW_UP;
spin_button_redraw (spin);
}
else if (y > widget->requisition.height / 2 &&
spin->in_child == GTK_ARROW_UP)
{
spin->in_child = GTK_ARROW_DOWN;
spin_button_redraw (spin);
}
return FALSE;
}
return GTK_WIDGET_CLASS (parent_class)->motion_notify_event (widget, event);
}
static gint
gtk_spin_button_timer (GtkSpinButton *spin_button)
{
gboolean retval = FALSE;
GDK_THREADS_ENTER ();
if (spin_button->timer)
{
if (spin_button->click_child == GTK_ARROW_UP)
gtk_spin_button_real_spin (spin_button, spin_button->timer_step);
else
gtk_spin_button_real_spin (spin_button, -spin_button->timer_step);
if (spin_button->need_timer)
{
spin_button->need_timer = FALSE;
spin_button->timer = g_timeout_add (SPIN_BUTTON_TIMER_DELAY,
(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;
}
}
GDK_THREADS_LEAVE ();
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);
spin_button_redraw (spin_button);
g_object_notify (G_OBJECT (spin_button), "value");
}
static void
gtk_spin_button_real_change_value (GtkSpinButton *spin,
GtkScrollType scroll)
{
/* 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);
}
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;
if (fabs (val - spin_button->adjustment->value) > EPSILON)
gtk_adjustment_set_value (spin_button->adjustment, val);
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);
}
}
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 */
parent_class->activate (entry);
}
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 (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;
entry_length = entry->text_length;
lc = localeconv ();
if (*(lc->negative_sign))
neg_sign = *(lc->negative_sign);
else
neg_sign = '-';
if (*(lc->positive_sign))
pos_sign = *(lc->positive_sign);
else
pos_sign = '+';
for (sign=0, i=0; 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;
adj = spin_button->adjustment;
new_value = adj->value + increment;
if (increment > 0)
{
if (spin_button->wrap)
{
if (fabs (adj->value - adj->upper) < EPSILON)
new_value = adj->lower;
else if (new_value > adj->upper)
new_value = adj->upper;
}
else
new_value = MIN (new_value, adj->upper);
}
else if (increment < 0)
{
if (spin_button->wrap)
{
if (fabs (adj->value - adj->lower) < EPSILON)
new_value = adj->upper;
else if (new_value < adj->lower)
new_value = adj->lower;
}
else
new_value = MAX (new_value, adj->lower);
}
if (fabs (new_value - adj->value) > EPSILON)
gtk_adjustment_set_value (adj, new_value);
spin_button_redraw (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 ***
***********************************************************
***********************************************************/
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.
*
* 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 (adjustment);
gtk_object_sink (GTK_OBJECT (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:
*
* 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: location to store step increment, or %NULL
* @page: location to store page increment, or %NULL
*
* Gets the current step and page the increments used by @spin_button. See
* gtk_spin_button_set_increments().
**/
void
gtk_spin_button_get_increments (GtkSpinButton *spin_button,
gdouble *step,
gdouble *page)
{
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
if (step)
*step = spin_button->adjustment->step_increment;
if (page)
*page = spin_button->adjustment->page_increment;
}
/**
* gtk_spin_button_set_range:
* @spin_button: a #GtkSpinButton
* @min: minimum allowable value
* @max: maximum allowable value
*
* Sets the minimum and maximum allowable values for @spin_button
**/
void
gtk_spin_button_set_range (GtkSpinButton *spin_button,
gdouble min,
gdouble max)
{
gdouble value;
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
spin_button->adjustment->lower = min;
spin_button->adjustment->upper = max;
value = CLAMP (spin_button->adjustment->value,
spin_button->adjustment->lower,
(spin_button->adjustment->upper - spin_button->adjustment->page_size));
if (value != spin_button->adjustment->value)
gtk_spin_button_set_value (spin_button, value);
gtk_adjustment_changed (spin_button->adjustment);
}
/**
* gtk_spin_button_get_range:
* @spin_button: a #GtkSpinButton
* @min: location to store minimum allowed value, or %NULL
* @max: location to store maximum allowed value, or %NULL
*
* Gets the range allowed for @spin_button. See
* gtk_spin_button_set_range().
**/
void
gtk_spin_button_get_range (GtkSpinButton *spin_button,
gdouble *min,
gdouble *max)
{
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
if (min)
*min = spin_button->adjustment->lower;
if (max)
*max = spin_button->adjustment->upper;
}
/**
* gtk_spin_button_get_value:
* @spin_button: a #GtkSpinButton
*
* Get the value in the @spin_button.
*
* Return value: the value of @spin_button
**/
gdouble
gtk_spin_button_get_value (GtkSpinButton *spin_button)
{
g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spin_button), 0.0);
return spin_button->adjustment->value;
}
/**
* gtk_spin_button_get_value_as_int:
* @spin_button: a #GtkSpinButton
*
* Get the value @spin_button represented as an integer.
*
* Return value: the value of @spin_button
**/
gint
gtk_spin_button_get_value_as_int (GtkSpinButton *spin_button)
{
gdouble val;
g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spin_button), 0);
val = spin_button->adjustment->value;
if (val - floor (val) < ceil (val) - val)
return floor (val);
else
return ceil (val);
}
/**
* gtk_spin_button_set_value:
* @spin_button: a #GtkSpinButton
* @value: the new value
*
* Set the value of @spin_button.
**/
void
gtk_spin_button_set_value (GtkSpinButton *spin_button,
gdouble value)
{
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
if (fabs (value - spin_button->adjustment->value) > EPSILON)
gtk_adjustment_set_value (spin_button->adjustment, value);
else
{
gint return_val = FALSE;
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;
spin_button_redraw (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
{
if (fabs (val - spin_button->adjustment->value) > EPSILON)
gtk_adjustment_set_value (spin_button->adjustment, val);
else
{
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);
}
}
}
static void
spin_button_redraw (GtkSpinButton *spin_button)
{
GtkWidget *widget;
widget = GTK_WIDGET (spin_button);
if (GTK_WIDGET_DRAWABLE (widget))
{
gtk_widget_queue_draw (widget);
/* We must invalidate the panel window ourselves, because it
* is not a child of widget->window
*/
gdk_window_invalidate_rect (spin_button->panel, NULL, TRUE);
}
}
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