diff options
author | Jan-Arve Saether <jan-arve.saether@nokia.com> | 2011-09-16 06:56:48 +0200 |
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committer | Qt by Nokia <qt-info@nokia.com> | 2011-09-29 13:32:59 +0200 |
commit | 87ae97c11ab9b298c0ce6701873b45fc3992b385 (patch) | |
tree | 8f30a95f054b8bf2346a98e072ba864a7a974da5 /src/gui/accessible/qaccessible_mac_carbon.cpp | |
parent | 8ebd7d84fcdaeba152bd9812b45d5c49b1e03a23 (diff) |
Refactor accessibility for Qt5
* Moved most stuff to gui\accessible
* Moved widget-specific stuff to widgets\accessible
* Moved platform-specific code to either the bridge plugin (this was already the case)
or to the platform plugin.
* Added several classes and functions. These have not yet gone through an API
review. The plan is to do that in a later commit.
Classes:
- QPlatformAccessibility
- QWindowsAccessibility
Functions:
- QWindow *QAccessibleInterface::window();
- QPlatformAccessibility *QPlatformIntegration::accessibility()
* The bridge code can now either be a plugin or integrated into the platform plugin
* Mac accessibility is left out for now. Unix "should still work" (tm). These platforms
should be fixed soon.
Change-Id: Ib49ffa73b647ee0af90864544c2769440157f562
Reviewed-on: http://codereview.qt-project.org/5330
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@nokia.com>
Reviewed-by: Jan-Arve Sæther <jan-arve.saether@nokia.com>
Diffstat (limited to 'src/gui/accessible/qaccessible_mac_carbon.cpp')
-rw-r--r-- | src/gui/accessible/qaccessible_mac_carbon.cpp | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/src/gui/accessible/qaccessible_mac_carbon.cpp b/src/gui/accessible/qaccessible_mac_carbon.cpp new file mode 100644 index 0000000000..32a242f274 --- /dev/null +++ b/src/gui/accessible/qaccessible_mac_carbon.cpp @@ -0,0 +1,119 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtGui module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** This file may be used under the terms of the GNU Lesser General Public +** License version 2.1 as published by the Free Software Foundation and +** appearing in the file LICENSE.LGPL included in the packaging of this +** file. Please review the following information to ensure the GNU Lesser +** General Public License version 2.1 requirements will be met: +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU General +** Public License version 3.0 as published by the Free Software Foundation +** and appearing in the file LICENSE.GPL included in the packaging of this +** file. Please review the following information to ensure the GNU General +** Public License version 3.0 requirements will be met: +** http://www.gnu.org/copyleft/gpl.html. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +static OSStatus applicationEventHandler(EventHandlerCallRef next_ref, EventRef event, void *data); +static EventHandlerUPP applicationEventHandlerUPP = 0; +static EventTypeSpec application_events[] = { + { kEventClassAccessibility, kEventAccessibleGetChildAtPoint }, + { kEventClassAccessibility, kEventAccessibleGetNamedAttribute } +}; + +static CFStringRef kObjectQtAccessibility = CFSTR("com.trolltech.qt.accessibility"); +static EventHandlerUPP objectCreateEventHandlerUPP = 0; +static EventTypeSpec objectCreateEvents[] = { + { kEventClassHIObject, kEventHIObjectConstruct }, + { kEventClassHIObject, kEventHIObjectInitialize }, + { kEventClassHIObject, kEventHIObjectDestruct }, + { kEventClassHIObject, kEventHIObjectPrintDebugInfo } +}; + +static OSStatus accessibilityEventHandler(EventHandlerCallRef next_ref, EventRef event, void *data); +static EventHandlerUPP accessibilityEventHandlerUPP = 0; +static EventTypeSpec accessibilityEvents[] = { + { kEventClassAccessibility, kEventAccessibleGetChildAtPoint }, + { kEventClassAccessibility, kEventAccessibleGetFocusedChild }, + { kEventClassAccessibility, kEventAccessibleGetAllAttributeNames }, + { kEventClassAccessibility, kEventAccessibleGetNamedAttribute }, + { kEventClassAccessibility, kEventAccessibleSetNamedAttribute }, + { kEventClassAccessibility, kEventAccessibleIsNamedAttributeSettable }, + { kEventClassAccessibility, kEventAccessibleGetAllActionNames }, + { kEventClassAccessibility, kEventAccessiblePerformNamedAction }, + { kEventClassAccessibility, kEventAccessibleGetNamedActionDescription } +}; + +static void installAcessibilityEventHandler(HIObjectRef hiObject) +{ + if (!accessibilityEventHandlerUPP) + accessibilityEventHandlerUPP = NewEventHandlerUPP(accessibilityEventHandler); + + InstallHIObjectEventHandler(hiObject, accessibilityEventHandlerUPP, + GetEventTypeCount(accessibilityEvents), + accessibilityEvents, 0, 0); +} + +static OSStatus objectCreateEventHandler(EventHandlerCallRef next_ref, EventRef event, void *data) +{ + Q_UNUSED(data) + Q_UNUSED(event) + Q_UNUSED(next_ref) + return noErr; +} + +static void registerQtAccessibilityHIObjectSubclass() +{ + if (!objectCreateEventHandlerUPP) + objectCreateEventHandlerUPP = NewEventHandlerUPP(objectCreateEventHandler); + OSStatus err = HIObjectRegisterSubclass(kObjectQtAccessibility, 0, 0, objectCreateEventHandlerUPP, + GetEventTypeCount(objectCreateEvents), objectCreateEvents, 0, 0); + if (err && err != hiObjectClassExistsErr) + qWarning("qaccessible_mac internal error: Could not register accessibility HIObject subclass"); +} + +static void installApplicationEventhandler() +{ + if (!applicationEventHandlerUPP) + applicationEventHandlerUPP = NewEventHandlerUPP(applicationEventHandler); + + OSStatus err = InstallApplicationEventHandler(applicationEventHandlerUPP, + GetEventTypeCount(application_events), application_events, + 0, 0); + + if (err && err != eventHandlerAlreadyInstalledErr) + qWarning("qaccessible_mac internal error: Could not install application accessibility event handler"); +} + +static void removeEventhandler(EventHandlerUPP eventHandler) +{ + if (eventHandler) { + DisposeEventHandlerUPP(eventHandler); + eventHandler = 0; + } +} |