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Diffstat (limited to '')
| -rw-r--r-- | vcl/unx/gtk3/a11y/atkaction.cxx | 269 |
1 files changed, 269 insertions, 0 deletions
diff --git a/vcl/unx/gtk3/a11y/atkaction.cxx b/vcl/unx/gtk3/a11y/atkaction.cxx new file mode 100644 index 000000000..0a39d3bdf --- /dev/null +++ b/vcl/unx/gtk3/a11y/atkaction.cxx @@ -0,0 +1,269 @@ +/* -*- 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/XAccessibleAction.hpp> +#include <com/sun/star/accessibility/XAccessibleKeyBinding.hpp> + +#include <com/sun/star/awt/Key.hpp> +#include <com/sun/star/awt/KeyModifier.hpp> + +#include <rtl/strbuf.hxx> +#include <algorithm> +#include <map> + +using namespace ::com::sun::star; + +// FIXME +static const gchar * +getAsConst( const OString& rString ) +{ + static const int nMax = 10; + static OString aUgly[nMax]; + static int nIdx = 0; + nIdx = (nIdx + 1) % nMax; + aUgly[nIdx] = rString; + return aUgly[ nIdx ].getStr(); +} + +/// @throws uno::RuntimeException +static css::uno::Reference<css::accessibility::XAccessibleAction> + getAction( AtkAction *action ) +{ + AtkObjectWrapper *pWrap = ATK_OBJECT_WRAPPER( action ); + + if( pWrap ) + { + if( !pWrap->mpAction.is() ) + { + pWrap->mpAction.set(pWrap->mpContext, css::uno::UNO_QUERY); + } + + return pWrap->mpAction; + } + + return css::uno::Reference<css::accessibility::XAccessibleAction>(); +} + +extern "C" { + +static gboolean +action_wrapper_do_action (AtkAction *action, + gint i) +{ + try { + css::uno::Reference<css::accessibility::XAccessibleAction> pAction + = getAction( action ); + if( pAction.is() ) + return pAction->doAccessibleAction( i ); + } + catch(const uno::Exception&) { + g_warning( "Exception in doAccessibleAction()" ); + } + + return FALSE; +} + +static gint +action_wrapper_get_n_actions (AtkAction *action) +{ + try { + css::uno::Reference<css::accessibility::XAccessibleAction> pAction + = getAction( action ); + if( pAction.is() ) + return pAction->getAccessibleActionCount(); + } + catch(const uno::Exception&) { + g_warning( "Exception in getAccessibleActionCount()" ); + } + + return 0; +} + +static const gchar * +action_wrapper_get_description (AtkAction *, gint) +{ + // GAIL implement this only for cells + g_warning( "Not implemented: get_description()" ); + return ""; +} + +static const gchar * +action_wrapper_get_localized_name (AtkAction *, gint) +{ + // GAIL doesn't implement this as well + g_warning( "Not implemented: get_localized_name()" ); + return ""; +} + +static const gchar * +action_wrapper_get_name (AtkAction *action, + gint i) +{ + static std::map< OUString, const gchar * > aNameMap { + { "click", "click" }, + { "select", "click" } , + { "togglePopup", "push" } + }; + + try { + css::uno::Reference<css::accessibility::XAccessibleAction> pAction + = getAction( action ); + if( pAction.is() ) + { + std::map< OUString, const gchar * >::iterator iter; + + OUString aDesc( pAction->getAccessibleActionDescription( i ) ); + + iter = aNameMap.find( aDesc ); + if( iter != aNameMap.end() ) + return iter->second; + + std::pair< const OUString, const gchar * > aNewVal( aDesc, + g_strdup( OUStringToConstGChar(aDesc) ) ); + + if( aNameMap.insert( aNewVal ).second ) + return aNewVal.second; + } + } + catch(const uno::Exception&) { + g_warning( "Exception in getAccessibleActionDescription()" ); + } + + return ""; +} + +/* +* GNOME Expects a string in the format: +* +* <mnemonic>;<full-path>;<accelerator> +* +* The keybindings in <full-path> should be separated by ":" +*/ + +static void +appendKeyStrokes(OStringBuffer& rBuffer, const uno::Sequence< awt::KeyStroke >& rKeyStrokes) +{ + for( const auto& rKeyStroke : rKeyStrokes ) + { + if( rKeyStroke.Modifiers & awt::KeyModifier::SHIFT ) + rBuffer.append("<Shift>"); + if( rKeyStroke.Modifiers & awt::KeyModifier::MOD1 ) + rBuffer.append("<Control>"); + if( rKeyStroke.Modifiers & awt::KeyModifier::MOD2 ) + rBuffer.append("<Alt>"); + + if( ( rKeyStroke.KeyCode >= awt::Key::A ) && ( rKeyStroke.KeyCode <= awt::Key::Z ) ) + rBuffer.append( static_cast<char>( 'a' + ( rKeyStroke.KeyCode - awt::Key::A ) ) ); + else + { + char c = '\0'; + + switch( rKeyStroke.KeyCode ) + { + case awt::Key::TAB: c = '\t'; break; + case awt::Key::SPACE: c = ' '; break; + case awt::Key::ADD: c = '+'; break; + case awt::Key::SUBTRACT: c = '-'; break; + case awt::Key::MULTIPLY: c = '*'; break; + case awt::Key::DIVIDE: c = '/'; break; + case awt::Key::POINT: c = '.'; break; + case awt::Key::COMMA: c = ','; break; + case awt::Key::LESS: c = '<'; break; + case awt::Key::GREATER: c = '>'; break; + case awt::Key::EQUAL: c = '='; break; + case 0: + break; + default: + g_warning( "Unmapped KeyCode: %d", rKeyStroke.KeyCode ); + break; + } + + if( c != '\0' ) + rBuffer.append( c ); + else + { + // The KeyCode approach did not work, probably a non ascii character + // let's hope that there is a character given in KeyChar. + rBuffer.append(OUStringToOString(OUStringChar(rKeyStroke.KeyChar), RTL_TEXTENCODING_UTF8)); + } + } + } +} + +static const gchar * +action_wrapper_get_keybinding (AtkAction *action, + gint i) +{ + try { + css::uno::Reference<css::accessibility::XAccessibleAction> pAction + = getAction( action ); + if( pAction.is() ) + { + uno::Reference< accessibility::XAccessibleKeyBinding > xBinding( pAction->getAccessibleActionKeyBinding( i )); + + if( xBinding.is() ) + { + OStringBuffer aRet; + + sal_Int32 nmax = std::min( xBinding->getAccessibleKeyBindingCount(), sal_Int32(3) ); + for( sal_Int32 n = 0; n < nmax; n++ ) + { + appendKeyStrokes( aRet, xBinding->getAccessibleKeyBinding( n ) ); + + if( n < 2 ) + aRet.append( ';' ); + } + + // !! FIXME !! remember keystroke in wrapper object ? + return getAsConst( aRet.makeStringAndClear() ); + } + } + } + catch(const uno::Exception&) { + g_warning( "Exception in get_keybinding()" ); + } + + return ""; +} + +static gboolean +action_wrapper_set_description (AtkAction *, gint, const gchar *) +{ + return FALSE; +} + +} // extern "C" + +void +actionIfaceInit (AtkActionIface *iface) +{ + g_return_if_fail (iface != nullptr); + + iface->do_action = action_wrapper_do_action; + iface->get_n_actions = action_wrapper_get_n_actions; + iface->get_description = action_wrapper_get_description; + iface->get_keybinding = action_wrapper_get_keybinding; + iface->get_name = action_wrapper_get_name; + iface->get_localized_name = action_wrapper_get_localized_name; + iface->set_description = action_wrapper_set_description; +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |