257 lines
7.6 KiB
C
257 lines
7.6 KiB
C
/* GAIL - The GNOME Accessibility Implementation Library
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* Copyright 2008 Jan Arne Petersen
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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, see <http://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#include <gtk/gtk.h>
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#include "gtkscalebuttonaccessible.h"
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#include <string.h>
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static void atk_action_interface_init (AtkActionIface *iface);
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static void atk_value_interface_init (AtkValueIface *iface);
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G_DEFINE_TYPE_WITH_CODE (GtkScaleButtonAccessible, _gtk_scale_button_accessible, GTK_TYPE_BUTTON_ACCESSIBLE,
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G_IMPLEMENT_INTERFACE (ATK_TYPE_ACTION, atk_action_interface_init)
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G_IMPLEMENT_INTERFACE (ATK_TYPE_VALUE, atk_value_interface_init));
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static void
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gtk_scale_button_accessible_value_changed (GtkAdjustment *adjustment,
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gpointer data)
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{
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g_object_notify (G_OBJECT (data), "accessible-value");
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}
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static void
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gtk_scale_button_accessible_initialize (AtkObject *obj,
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gpointer data)
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{
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GtkAdjustment *adjustment;
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ATK_OBJECT_CLASS (_gtk_scale_button_accessible_parent_class)->initialize (obj, data);
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adjustment = gtk_scale_button_get_adjustment (GTK_SCALE_BUTTON (data));
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if (adjustment)
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g_signal_connect (adjustment,
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"value-changed",
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G_CALLBACK (gtk_scale_button_accessible_value_changed),
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obj);
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obj->role = ATK_ROLE_SLIDER;
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}
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static void
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gtk_scale_button_accessible_notify_gtk (GObject *obj,
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GParamSpec *pspec)
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{
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GtkScaleButton *scale_button;
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GtkScaleButtonAccessible *accessible;
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scale_button = GTK_SCALE_BUTTON (obj);
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accessible = GTK_SCALE_BUTTON_ACCESSIBLE (gtk_widget_get_accessible (GTK_WIDGET (scale_button)));
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if (strcmp (pspec->name, "adjustment") == 0)
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{
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GtkAdjustment* adjustment;
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adjustment = gtk_scale_button_get_adjustment (scale_button);
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g_signal_connect (adjustment,
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"value-changed",
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G_CALLBACK (gtk_scale_button_accessible_value_changed),
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accessible);
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}
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else
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{
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GTK_WIDGET_ACCESSIBLE_CLASS (_gtk_scale_button_accessible_parent_class)->notify_gtk (obj, pspec);
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}
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}
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static void
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_gtk_scale_button_accessible_class_init (GtkScaleButtonAccessibleClass *klass)
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{
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AtkObjectClass *atk_object_class = ATK_OBJECT_CLASS (klass);
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GtkWidgetAccessibleClass *widget_class = GTK_WIDGET_ACCESSIBLE_CLASS (klass);
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atk_object_class->initialize = gtk_scale_button_accessible_initialize;
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widget_class->notify_gtk = gtk_scale_button_accessible_notify_gtk;
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}
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static void
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_gtk_scale_button_accessible_init (GtkScaleButtonAccessible *button)
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{
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}
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static gboolean
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gtk_scale_button_accessible_do_action (AtkAction *action,
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gint i)
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{
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GtkWidget *widget;
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widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (action));
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if (widget == NULL)
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return FALSE;
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if (!gtk_widget_is_sensitive (widget) || !gtk_widget_get_visible (widget))
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return FALSE;
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switch (i)
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{
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case 0:
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g_signal_emit_by_name (widget, "popup");
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return TRUE;
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case 1:
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g_signal_emit_by_name (widget, "popdown");
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return TRUE;
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default:
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return FALSE;
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}
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}
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static gint
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gtk_scale_button_accessible_get_n_actions (AtkAction *action)
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{
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return 2;
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}
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static const gchar *
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gtk_scale_button_accessible_get_description (AtkAction *action,
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gint i)
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{
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return NULL;
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}
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static const gchar *
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gtk_scale_button_accessible_action_get_name (AtkAction *action,
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gint i)
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{
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switch (i)
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{
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case 0:
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return "popup";
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case 1:
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return "popdown";
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default:
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return NULL;
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}
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}
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static void
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atk_action_interface_init (AtkActionIface *iface)
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{
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iface->do_action = gtk_scale_button_accessible_do_action;
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iface->get_n_actions = gtk_scale_button_accessible_get_n_actions;
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iface->get_description = gtk_scale_button_accessible_get_description;
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iface->get_name = gtk_scale_button_accessible_action_get_name;
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}
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static void
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gtk_scale_button_accessible_get_current_value (AtkValue *obj,
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GValue *value)
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{
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GtkWidget *widget;
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GtkAdjustment *adjustment;
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widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
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adjustment = gtk_scale_button_get_adjustment (GTK_SCALE_BUTTON (widget));
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if (adjustment == NULL)
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return;
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memset (value, 0, sizeof (GValue));
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g_value_init (value, G_TYPE_DOUBLE);
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g_value_set_double (value, gtk_adjustment_get_value (adjustment));
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}
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static void
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gtk_scale_button_accessible_get_maximum_value (AtkValue *obj,
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GValue *value)
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{
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GtkWidget *widget;
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GtkAdjustment *adjustment;
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widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
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adjustment = gtk_scale_button_get_adjustment (GTK_SCALE_BUTTON (widget));
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if (adjustment == NULL)
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return;
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memset (value, 0, sizeof (GValue));
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g_value_init (value, G_TYPE_DOUBLE);
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g_value_set_double (value, gtk_adjustment_get_upper (adjustment));
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}
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static void
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gtk_scale_button_accessible_get_minimum_value (AtkValue *obj,
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GValue *value)
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{
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GtkWidget *widget;
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GtkAdjustment *adjustment;
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widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
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adjustment = gtk_scale_button_get_adjustment (GTK_SCALE_BUTTON (widget));
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if (adjustment == NULL)
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return;
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memset (value, 0, sizeof (GValue));
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g_value_init (value, G_TYPE_DOUBLE);
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g_value_set_double (value, gtk_adjustment_get_lower (adjustment));
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}
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static void
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gtk_scale_button_accessible_get_minimum_increment (AtkValue *obj,
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GValue *value)
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{
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GtkWidget *widget;
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GtkAdjustment *adjustment;
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widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
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adjustment = gtk_scale_button_get_adjustment (GTK_SCALE_BUTTON (widget));
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if (adjustment == NULL)
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return;
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memset (value, 0, sizeof (GValue));
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g_value_init (value, G_TYPE_DOUBLE);
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g_value_set_double (value, gtk_adjustment_get_minimum_increment (adjustment));
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}
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static gboolean
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gtk_scale_button_accessible_set_current_value (AtkValue *obj,
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const GValue *value)
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{
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GtkWidget *widget;
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GtkAdjustment *adjustment;
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widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
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adjustment = gtk_scale_button_get_adjustment (GTK_SCALE_BUTTON (widget));
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if (adjustment == NULL)
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return FALSE;
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gtk_adjustment_set_value (adjustment, g_value_get_double (value));
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return TRUE;
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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 = gtk_scale_button_accessible_get_current_value;
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iface->get_maximum_value = gtk_scale_button_accessible_get_maximum_value;
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iface->get_minimum_value = gtk_scale_button_accessible_get_minimum_value;
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iface->get_minimum_increment = gtk_scale_button_accessible_get_minimum_increment;
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iface->set_current_value = gtk_scale_button_accessible_set_current_value;
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}
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