forked from AuroraMiddleware/gtk
130 lines
4.2 KiB
C
130 lines
4.2 KiB
C
/* gtkatspivalue.c: AT-SPI Value implementation
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*
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* Copyright 2020 Red Hat, Inc.
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*
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* SPDX-License-Identifier: LGPL-2.1-or-later
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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 2.1 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 "gtkatspivalueprivate.h"
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#include "a11y/atspi/atspi-value.h"
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#include "gtkatcontextprivate.h"
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#include "gtkdebug.h"
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#include "gtklevelbar.h"
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#include "gtkpaned.h"
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#include "gtkprogressbar.h"
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#include "gtkrange.h"
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#include "gtkscalebutton.h"
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#include "gtkspinbutton.h"
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#include <gio/gio.h>
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static GVariant *
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handle_value_get_property (GDBusConnection *connection,
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const gchar *sender,
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const gchar *object_path,
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const gchar *interface_name,
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const gchar *property_name,
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GError **error,
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gpointer user_data)
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{
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GtkATContext *ctx = GTK_AT_CONTEXT (user_data);
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struct {
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const char *name;
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GtkAccessibleProperty property;
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} properties[] = {
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{ "MinimumValue", GTK_ACCESSIBLE_PROPERTY_VALUE_MIN },
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{ "MaximumValue", GTK_ACCESSIBLE_PROPERTY_VALUE_MAX },
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{ "CurrentValue", GTK_ACCESSIBLE_PROPERTY_VALUE_NOW },
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};
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int i;
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for (i = 0; i < G_N_ELEMENTS (properties); i++)
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{
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if (g_strcmp0 (property_name, properties[i].name) == 0)
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{
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if (gtk_at_context_has_accessible_property (ctx, properties[i].property))
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{
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GtkAccessibleValue *value;
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value = gtk_at_context_get_accessible_property (ctx, properties[i].property);
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return g_variant_new_double (gtk_number_accessible_value_get (value));
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}
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}
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}
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/* fall back for a) MinimumIncrement b) widgets that should have the
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* properties but don't
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*/
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return g_variant_new_double (0.0);
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}
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static gboolean
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handle_value_set_property (GDBusConnection *connection,
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const gchar *sender,
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const gchar *object_path,
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const gchar *interface_name,
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const gchar *property_name,
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GVariant *value,
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GError **error,
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gpointer user_data)
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{
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GtkATContext *self = user_data;
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GtkWidget *widget = GTK_WIDGET (gtk_at_context_get_accessible (self));
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if (g_strcmp0 (property_name, "CurrentValue") == 0)
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{
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/* we only allow setting values if that is part of the user-exposed
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* functionality of the widget.
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*/
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if (GTK_IS_RANGE (widget))
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gtk_range_set_value (GTK_RANGE (widget), g_variant_get_double (value));
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else if (GTK_IS_PANED (widget))
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gtk_paned_set_position (GTK_PANED (widget), (int)(g_variant_get_double (value) + 0.5));
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else if (GTK_IS_SPIN_BUTTON (widget))
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gtk_spin_button_set_value (GTK_SPIN_BUTTON (widget), g_variant_get_double (value));
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else if (GTK_IS_SCALE_BUTTON (widget))
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gtk_scale_button_set_value (GTK_SCALE_BUTTON (widget), g_variant_get_double (value));
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return TRUE;
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}
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return FALSE;
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}
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static const GDBusInterfaceVTable value_vtable = {
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NULL,
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handle_value_get_property,
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handle_value_set_property,
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};
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const GDBusInterfaceVTable *
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gtk_atspi_get_value_vtable (GtkWidget *widget)
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{
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if (GTK_IS_LEVEL_BAR (widget) ||
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GTK_IS_PANED (widget) ||
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GTK_IS_PROGRESS_BAR (widget) ||
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GTK_IS_RANGE (widget) ||
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GTK_IS_SCALE_BUTTON (widget) ||
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GTK_IS_SPIN_BUTTON (widget))
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return &value_vtable;
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return NULL;
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}
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