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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include "atkwrapper.hxx"
#include <com/sun/star/accessibility/XAccessibleComponent.hpp>
#include <gtk/gtk.h>
using namespace ::com::sun::star;
AtkObjectWrapper* getObjectWrapper(AtkComponent *pComponent)
{
AtkObjectWrapper *pWrap = nullptr;
if (ATK_IS_OBJECT_WRAPPER(pComponent))
pWrap = ATK_OBJECT_WRAPPER(pComponent);
else if (GTK_IS_DRAWING_AREA(pComponent)) //when using a GtkDrawingArea as a custom widget in welded gtk3
{
GtkWidget* pDrawingArea = GTK_WIDGET(pComponent);
AtkObject* pAtkObject = gtk_widget_get_accessible(pDrawingArea);
pWrap = ATK_IS_OBJECT_WRAPPER(pAtkObject) ? ATK_OBJECT_WRAPPER(pAtkObject) : nullptr;
}
return pWrap;
}
/// @throws uno::RuntimeException
static css::uno::Reference<css::accessibility::XAccessibleComponent>
getComponent(AtkObjectWrapper *pWrap)
{
if (pWrap)
{
if (!pWrap->mpComponent.is())
pWrap->mpComponent.set(pWrap->mpContext, css::uno::UNO_QUERY);
return pWrap->mpComponent;
}
return css::uno::Reference<css::accessibility::XAccessibleComponent>();
}
/*****************************************************************************/
static awt::Point
translatePoint( css::uno::Reference<accessibility::XAccessibleComponent> const & pComponent,
gint x, gint y, AtkCoordType t)
{
awt::Point aOrigin( 0, 0 );
if( t == ATK_XY_SCREEN )
aOrigin = pComponent->getLocationOnScreen();
return awt::Point( x - aOrigin.X, y - aOrigin.Y );
}
/*****************************************************************************/
extern "C" {
static gboolean
component_wrapper_grab_focus (AtkComponent *component)
{
AtkObjectWrapper* obj = getObjectWrapper(component);
//if we're a native GtkDrawingArea with custom a11y, use the default toolkit a11y
if (obj && obj->mpOrig)
return atk_component_grab_focus(ATK_COMPONENT(obj->mpOrig));
try
{
css::uno::Reference<css::accessibility::XAccessibleComponent> pComponent
= getComponent(obj);
if( pComponent.is() )
{
pComponent->grabFocus();
return TRUE;
}
}
catch( const uno::Exception & )
{
g_warning( "Exception in grabFocus()" );
}
return FALSE;
}
/*****************************************************************************/
static gboolean
component_wrapper_contains (AtkComponent *component,
gint x,
gint y,
AtkCoordType coord_type)
{
AtkObjectWrapper* obj = getObjectWrapper(component);
//if we're a native GtkDrawingArea with custom a11y, use the default toolkit a11y
if (obj && obj->mpOrig)
return atk_component_contains(ATK_COMPONENT(obj->mpOrig), x, y, coord_type);
try
{
css::uno::Reference<css::accessibility::XAccessibleComponent> pComponent
= getComponent(obj);
if( pComponent.is() )
return pComponent->containsPoint( translatePoint( pComponent, x, y, coord_type ) );
}
catch( const uno::Exception & )
{
g_warning( "Exception in containsPoint()" );
}
return FALSE;
}
/*****************************************************************************/
static AtkObject *
component_wrapper_ref_accessible_at_point (AtkComponent *component,
gint x,
gint y,
AtkCoordType coord_type)
{
AtkObjectWrapper* obj = getObjectWrapper(component);
//if we're a native GtkDrawingArea with custom a11y, use the default toolkit a11y
if (obj && obj->mpOrig)
return atk_component_ref_accessible_at_point(ATK_COMPONENT(obj->mpOrig), x, y, coord_type);
try
{
css::uno::Reference<css::accessibility::XAccessibleComponent> pComponent
= getComponent(obj);
if( pComponent.is() )
{
uno::Reference< accessibility::XAccessible > xAccessible;
xAccessible = pComponent->getAccessibleAtPoint(
translatePoint( pComponent, x, y, coord_type ) );
return atk_object_wrapper_ref( xAccessible );
}
}
catch( const uno::Exception & )
{
g_warning( "Exception in getAccessibleAtPoint()" );
}
return nullptr;
}
/*****************************************************************************/
static void
component_wrapper_get_position (AtkComponent *component,
gint *x,
gint *y,
AtkCoordType coord_type)
{
AtkObjectWrapper* obj = getObjectWrapper(component);
//if we're a native GtkDrawingArea with custom a11y, use the default toolkit a11y
if (obj && obj->mpOrig)
{
atk_component_get_extents(ATK_COMPONENT(obj->mpOrig), x, y, nullptr, nullptr, coord_type);
return;
}
try
{
css::uno::Reference<css::accessibility::XAccessibleComponent> pComponent
= getComponent(obj);
if( pComponent.is() )
{
awt::Point aPos;
if( coord_type == ATK_XY_SCREEN )
aPos = pComponent->getLocationOnScreen();
else
aPos = pComponent->getLocation();
*x = aPos.X;
*y = aPos.Y;
}
}
catch( const uno::Exception & )
{
g_warning( "Exception in getLocation[OnScreen]()" );
}
}
/*****************************************************************************/
static void
component_wrapper_get_size (AtkComponent *component,
gint *width,
gint *height)
{
AtkObjectWrapper* obj = getObjectWrapper(component);
//if we're a native GtkDrawingArea with custom a11y, use the default toolkit a11y
if (obj && obj->mpOrig)
{
atk_component_get_extents(ATK_COMPONENT(obj->mpOrig), nullptr, nullptr, width, height, ATK_XY_WINDOW);
return;
}
try
{
css::uno::Reference<css::accessibility::XAccessibleComponent> pComponent
= getComponent(obj);
if( pComponent.is() )
{
awt::Size aSize = pComponent->getSize();
*width = aSize.Width;
*height = aSize.Height;
}
}
catch( const uno::Exception & )
{
g_warning( "Exception in getSize()" );
}
}
/*****************************************************************************/
static void
component_wrapper_get_extents (AtkComponent *component,
gint *x,
gint *y,
gint *width,
gint *height,
AtkCoordType coord_type)
{
component_wrapper_get_position( component, x, y, coord_type );
component_wrapper_get_size( component, width, height );
}
/*****************************************************************************/
static gboolean
component_wrapper_set_extents (AtkComponent *, gint, gint, gint, gint, AtkCoordType)
{
g_warning( "AtkComponent::set_extents unimplementable" );
return FALSE;
}
/*****************************************************************************/
static gboolean
component_wrapper_set_position (AtkComponent *, gint, gint, AtkCoordType)
{
g_warning( "AtkComponent::set_position unimplementable" );
return FALSE;
}
/*****************************************************************************/
static gboolean
component_wrapper_set_size (AtkComponent *, gint, gint)
{
g_warning( "AtkComponent::set_size unimplementable" );
return FALSE;
}
/*****************************************************************************/
static AtkLayer
component_wrapper_get_layer (AtkComponent *component)
{
AtkRole role = atk_object_get_role( ATK_OBJECT( component ) );
AtkLayer layer = ATK_LAYER_WIDGET;
switch (role)
{
case ATK_ROLE_POPUP_MENU:
case ATK_ROLE_MENU_ITEM:
case ATK_ROLE_CHECK_MENU_ITEM:
case ATK_ROLE_SEPARATOR:
case ATK_ROLE_LIST_ITEM:
layer = ATK_LAYER_POPUP;
break;
case ATK_ROLE_MENU:
{
AtkObject * parent = atk_object_get_parent( ATK_OBJECT( component ) );
if( atk_object_get_role( parent ) != ATK_ROLE_MENU_BAR )
layer = ATK_LAYER_POPUP;
}
break;
case ATK_ROLE_LIST:
{
AtkObject * parent = atk_object_get_parent( ATK_OBJECT( component ) );
if( atk_object_get_role( parent ) == ATK_ROLE_COMBO_BOX )
layer = ATK_LAYER_POPUP;
}
break;
default:
;
}
return layer;
}
/*****************************************************************************/
static gint
component_wrapper_get_mdi_zorder (AtkComponent *)
{
// only needed for ATK_LAYER_MDI (not used) or ATK_LAYER_WINDOW (inherited from GAIL)
return G_MININT;
}
/*****************************************************************************/
// This code is mostly stolen from libgail ..
static guint
component_wrapper_add_focus_handler (AtkComponent *component,
AtkFocusHandler handler)
{
GSignalMatchType match_type;
gulong ret;
guint signal_id;
match_type = GSignalMatchType(G_SIGNAL_MATCH_ID | G_SIGNAL_MATCH_FUNC);
signal_id = g_signal_lookup( "focus-event", ATK_TYPE_OBJECT );
ret = g_signal_handler_find( component, match_type, signal_id, 0, nullptr,
static_cast<gpointer>(&handler), nullptr);
if (!ret)
{
return g_signal_connect_closure_by_id (component,
signal_id, 0,
g_cclosure_new (
G_CALLBACK (handler), nullptr,
nullptr),
FALSE);
}
else
{
return 0;
}
}
/*****************************************************************************/
static void
component_wrapper_remove_focus_handler (AtkComponent *component,
guint handler_id)
{
g_signal_handler_disconnect (component, handler_id);
}
/*****************************************************************************/
} // extern "C"
void
componentIfaceInit (AtkComponentIface *iface)
{
g_return_if_fail (iface != nullptr);
iface->add_focus_handler = component_wrapper_add_focus_handler;
iface->contains = component_wrapper_contains;
iface->get_extents = component_wrapper_get_extents;
iface->get_layer = component_wrapper_get_layer;
iface->get_mdi_zorder = component_wrapper_get_mdi_zorder;
iface->get_position = component_wrapper_get_position;
iface->get_size = component_wrapper_get_size;
iface->grab_focus = component_wrapper_grab_focus;
iface->ref_accessible_at_point = component_wrapper_ref_accessible_at_point;
iface->remove_focus_handler = component_wrapper_remove_focus_handler;
iface->set_extents = component_wrapper_set_extents;
iface->set_position = component_wrapper_set_position;
iface->set_size = component_wrapper_set_size;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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