Daemonratte
7c2a1d8016
Add compile-time support for the modern AtkValue API available since ATK 2.12 while retaining compatibility with older ATK versions. Implement direct modern value, range, increment and setter methods for adjustments, paned widgets, progress bars, ranges, scale buttons and spin buttons. Keep the implementation private, avoid per-instance memory overhead and preserve the existing exported ABI.
286 lines
9 KiB
C
286 lines
9 KiB
C
/* GAIL - The GNOME Accessibility Implementation Library
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* Copyright 2001, 2002, 2003 Sun Microsystems Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include "config.h"
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#include <string.h>
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#include <gtk/gtk.h>
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#include "gailspinbutton.h"
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#include "gailvalue.h"
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#include "gailadjustment.h"
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#include "gail-private-macros.h"
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static void gail_spin_button_class_init (GailSpinButtonClass *klass);
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static void gail_spin_button_init (GailSpinButton *button);
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static void gail_spin_button_real_initialize (AtkObject *obj,
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gpointer data);
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static void gail_spin_button_finalize (GObject *object);
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static void atk_value_interface_init (AtkValueIface *iface);
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static void gail_spin_button_real_notify_gtk (GObject *obj,
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GParamSpec *pspec);
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static void gail_spin_button_get_current_value (AtkValue *obj,
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GValue *value);
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static void gail_spin_button_get_maximum_value (AtkValue *obj,
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GValue *value);
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static void gail_spin_button_get_minimum_value (AtkValue *obj,
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GValue *value);
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static void gail_spin_button_get_minimum_increment (AtkValue *obj,
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GValue *value);
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static gboolean gail_spin_button_set_current_value (AtkValue *obj,
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const GValue *value);
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static void gail_spin_button_value_changed (GtkAdjustment *adjustment,
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gpointer data);
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#ifdef HAVE_ATK_VALUE_2_12
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GAIL_DEFINE_ADJUSTMENT_VALUE_READERS (
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gail_spin_button,
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GAIL_VALUE_ADJUSTMENT (GAIL_SPIN_BUTTON (obj)->adjustment),
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adjustment->value, adjustment->upper)
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GAIL_DEFINE_ADJUSTMENT_VALUE_INCREMENT (
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gail_spin_button,
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GAIL_VALUE_ADJUSTMENT (GAIL_SPIN_BUTTON (obj)->adjustment),
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GAIL_VALUE_MINIMUM_INCREMENT (adjustment))
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GAIL_DEFINE_WIDGET_VALUE_SETTER (
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gail_spin_button, GTK_SPIN_BUTTON, gtk_spin_button_set_value, value)
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#endif
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G_DEFINE_TYPE_WITH_CODE (GailSpinButton, gail_spin_button, GAIL_TYPE_ENTRY,
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G_IMPLEMENT_INTERFACE (ATK_TYPE_VALUE, atk_value_interface_init))
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static void
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gail_spin_button_class_init (GailSpinButtonClass *klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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AtkObjectClass *class = ATK_OBJECT_CLASS (klass);
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GailWidgetClass *widget_class;
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widget_class = (GailWidgetClass*)klass;
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widget_class->notify_gtk = gail_spin_button_real_notify_gtk;
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class->initialize = gail_spin_button_real_initialize;
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gobject_class->finalize = gail_spin_button_finalize;
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}
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static void
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gail_spin_button_init (GailSpinButton *button)
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{
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}
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static void
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gail_spin_button_real_initialize (AtkObject *obj,
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gpointer data)
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{
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GailSpinButton *spin_button = GAIL_SPIN_BUTTON (obj);
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GtkSpinButton *gtk_spin_button;
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ATK_OBJECT_CLASS (gail_spin_button_parent_class)->initialize (obj, data);
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gtk_spin_button = GTK_SPIN_BUTTON (data);
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/*
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* If a GtkAdjustment already exists for the spin_button,
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* create the GailAdjustment
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*/
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if (gtk_spin_button->adjustment)
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{
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spin_button->adjustment = gail_adjustment_new (gtk_spin_button->adjustment);
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g_signal_connect (gtk_spin_button->adjustment,
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"value-changed",
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G_CALLBACK (gail_spin_button_value_changed),
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obj);
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}
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else
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spin_button->adjustment = NULL;
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obj->role = ATK_ROLE_SPIN_BUTTON;
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}
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static void
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atk_value_interface_init (AtkValueIface *iface)
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{
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iface->get_current_value = gail_spin_button_get_current_value;
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iface->get_maximum_value = gail_spin_button_get_maximum_value;
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iface->get_minimum_value = gail_spin_button_get_minimum_value;
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iface->get_minimum_increment = gail_spin_button_get_minimum_increment;
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iface->set_current_value = gail_spin_button_set_current_value;
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#ifdef HAVE_ATK_VALUE_2_12
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iface->get_value_and_text = gail_spin_button_get_value_and_text;
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iface->get_range = gail_spin_button_get_range;
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iface->get_increment = gail_spin_button_get_increment;
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iface->set_value = gail_spin_button_set_value;
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#endif
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}
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static void
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gail_spin_button_get_current_value (AtkValue *obj,
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GValue *value)
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{
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GailSpinButton *spin_button;
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g_return_if_fail (GAIL_IS_SPIN_BUTTON (obj));
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spin_button = GAIL_SPIN_BUTTON (obj);
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if (spin_button->adjustment == NULL)
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/*
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* Adjustment has not been specified
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*/
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return;
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gail_adjustment_get_current_value (ATK_VALUE (spin_button->adjustment), value);
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}
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static void
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gail_spin_button_get_maximum_value (AtkValue *obj,
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GValue *value)
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{
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GailSpinButton *spin_button;
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g_return_if_fail (GAIL_IS_SPIN_BUTTON (obj));
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spin_button = GAIL_SPIN_BUTTON (obj);
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if (spin_button->adjustment == NULL)
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/*
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* Adjustment has not been specified
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*/
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return;
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gail_adjustment_get_maximum_value (ATK_VALUE (spin_button->adjustment), value);
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}
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static void
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gail_spin_button_get_minimum_value (AtkValue *obj,
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GValue *value)
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{
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GailSpinButton *spin_button;
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g_return_if_fail (GAIL_IS_SPIN_BUTTON (obj));
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spin_button = GAIL_SPIN_BUTTON (obj);
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if (spin_button->adjustment == NULL)
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/*
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* Adjustment has not been specified
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*/
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return;
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gail_adjustment_get_minimum_value (ATK_VALUE (spin_button->adjustment), value);
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}
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static void
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gail_spin_button_get_minimum_increment (AtkValue *obj, GValue *value)
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{
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GailSpinButton *spin_button;
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g_return_if_fail (GAIL_IS_SPIN_BUTTON (obj));
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spin_button = GAIL_SPIN_BUTTON (obj);
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if (spin_button->adjustment == NULL)
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/*
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* Adjustment has not been specified
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*/
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return;
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gail_adjustment_get_minimum_increment (ATK_VALUE (spin_button->adjustment), value);
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}
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static gboolean
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gail_spin_button_set_current_value (AtkValue *obj,
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const GValue *value)
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{
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GailSpinButton *spin_button;
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g_return_val_if_fail (GAIL_IS_SPIN_BUTTON (obj), FALSE);
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spin_button = GAIL_SPIN_BUTTON (obj);
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if (spin_button->adjustment == NULL)
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/*
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* Adjustment has not been specified
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*/
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return FALSE;
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return gail_adjustment_set_current_value (ATK_VALUE (spin_button->adjustment), value);
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}
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static void
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gail_spin_button_finalize (GObject *object)
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{
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GailSpinButton *spin_button = GAIL_SPIN_BUTTON (object);
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if (spin_button->adjustment)
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{
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g_object_unref (spin_button->adjustment);
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spin_button->adjustment = NULL;
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}
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G_OBJECT_CLASS (gail_spin_button_parent_class)->finalize (object);
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}
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static void
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gail_spin_button_real_notify_gtk (GObject *obj,
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GParamSpec *pspec)
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{
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GtkWidget *widget = GTK_WIDGET (obj);
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GailSpinButton *spin_button = GAIL_SPIN_BUTTON (gtk_widget_get_accessible (widget));
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if (strcmp (pspec->name, "adjustment") == 0)
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{
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/*
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* Get rid of the GailAdjustment for the GtkAdjustment
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* which was associated with the spin_button.
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*/
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GtkSpinButton* gtk_spin_button;
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if (spin_button->adjustment)
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{
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g_object_unref (spin_button->adjustment);
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spin_button->adjustment = NULL;
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}
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/*
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* Create the GailAdjustment when notify for "adjustment" property
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* is received
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*/
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gtk_spin_button = GTK_SPIN_BUTTON (widget);
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spin_button->adjustment = gail_adjustment_new (gtk_spin_button->adjustment);
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g_signal_connect (gtk_spin_button->adjustment,
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"value-changed",
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G_CALLBACK (gail_spin_button_value_changed),
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spin_button);
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}
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else
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GAIL_WIDGET_CLASS (gail_spin_button_parent_class)->notify_gtk (obj, pspec);
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}
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static void
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gail_spin_button_value_changed (GtkAdjustment *adjustment,
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gpointer data)
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{
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GailSpinButton *spin_button;
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gail_return_if_fail (adjustment != NULL);
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gail_return_if_fail (data != NULL);
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spin_button = GAIL_SPIN_BUTTON (data);
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g_object_notify (G_OBJECT (spin_button), "accessible-value");
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}
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