diff options
Diffstat (limited to 'src/plugins/platforms/windows/uiautomation/qwindowsuiavalueprovider.cpp')
-rw-r--r-- | src/plugins/platforms/windows/uiautomation/qwindowsuiavalueprovider.cpp | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/src/plugins/platforms/windows/uiautomation/qwindowsuiavalueprovider.cpp b/src/plugins/platforms/windows/uiautomation/qwindowsuiavalueprovider.cpp new file mode 100644 index 0000000000..ef7d564e22 --- /dev/null +++ b/src/plugins/platforms/windows/uiautomation/qwindowsuiavalueprovider.cpp @@ -0,0 +1,132 @@ +/**************************************************************************** +** +** Copyright (C) 2017 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the plugins of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QtCore/QtConfig> +#ifndef QT_NO_ACCESSIBILITY + +#include "qwindowsuiavalueprovider.h" +#include "qwindowsuiautils.h" +#include "qwindowscontext.h" + +#include <QtGui/QAccessible> +#include <QtGui/QAccessibleInterface> +#include <QtCore/QDebug> +#include <QtCore/QString> + +QT_BEGIN_NAMESPACE + +using namespace QWindowsUiAutomation; + + +QWindowsUiaValueProvider::QWindowsUiaValueProvider(QAccessible::Id id) : + QWindowsUiaBaseProvider(id) +{ +} + +QWindowsUiaValueProvider::~QWindowsUiaValueProvider() +{ +} + +// Sets the value associated with the control. +HRESULT STDMETHODCALLTYPE QWindowsUiaValueProvider::SetValue(LPCWSTR val) +{ + qCDebug(lcQpaUiAutomation) << __FUNCTION__; + + QAccessibleInterface *accessible = accessibleInterface(); + if (!accessible) + return UIA_E_ELEMENTNOTAVAILABLE; + + // First sets the value as a text. + QString strVal = QString::fromUtf16(reinterpret_cast<const ushort *>(val)); + accessible->setText(QAccessible::Value, strVal); + + // Then, if the control supports the value interface (range value) + // and the supplied text can be converted to a number, and that number + // lies within the min/max limits, sets it as the control's current (numeric) value. + if (QAccessibleValueInterface *valueInterface = accessible->valueInterface()) { + bool ok = false; + double numval = strVal.toDouble(&ok); + if (ok) { + double minimum = valueInterface->minimumValue().toDouble(); + double maximum = valueInterface->maximumValue().toDouble(); + if ((numval >= minimum) && (numval <= maximum)) { + valueInterface->setCurrentValue(QVariant(numval)); + } + } + } + return S_OK; +} + +// True for read-only controls. +HRESULT STDMETHODCALLTYPE QWindowsUiaValueProvider::get_IsReadOnly(BOOL *pRetVal) +{ + qCDebug(lcQpaUiAutomation) << __FUNCTION__; + + if (!pRetVal) + return E_INVALIDARG; + *pRetVal = FALSE; + + QAccessibleInterface *accessible = accessibleInterface(); + if (!accessible) + return UIA_E_ELEMENTNOTAVAILABLE; + + *pRetVal = accessible->state().readOnly; + return S_OK; +} + +// Returns the value in text form. +HRESULT STDMETHODCALLTYPE QWindowsUiaValueProvider::get_Value(BSTR *pRetVal) +{ + qCDebug(lcQpaUiAutomation) << __FUNCTION__; + + if (!pRetVal) + return E_INVALIDARG; + *pRetVal = nullptr; + + QAccessibleInterface *accessible = accessibleInterface(); + if (!accessible) + return UIA_E_ELEMENTNOTAVAILABLE; + + *pRetVal = bStrFromQString(accessible->text(QAccessible::Value)); + return S_OK; +} + +QT_END_NAMESPACE + +#endif // QT_NO_ACCESSIBILITY |