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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qaccessiblebridgeutils_p.h"
#include <QtCore/qmath.h>
QT_BEGIN_NAMESPACE
namespace QAccessibleBridgeUtils {
static bool performAction(QAccessibleInterface *iface, const QString &actionName)
{
if (QAccessibleActionInterface *actionIface = iface->actionInterface()) {
if (actionIface->actionNames().contains(actionName)) {
actionIface->doAction(actionName);
return true;
}
}
return false;
}
QStringList effectiveActionNames(QAccessibleInterface *iface)
{
QStringList actions;
if (QAccessibleActionInterface *actionIface = iface->actionInterface())
actions = actionIface->actionNames();
if (iface->valueInterface()) {
if (!actions.contains(QAccessibleActionInterface::increaseAction()))
actions << QAccessibleActionInterface::increaseAction();
if (!actions.contains(QAccessibleActionInterface::decreaseAction()))
actions << QAccessibleActionInterface::decreaseAction();
}
return actions;
}
bool performEffectiveAction(QAccessibleInterface *iface, const QString &actionName)
{
if (!iface)
return false;
if (performAction(iface, actionName))
return true;
if (actionName != QAccessibleActionInterface::increaseAction()
&& actionName != QAccessibleActionInterface::decreaseAction())
return false;
QAccessibleValueInterface *valueIface = iface->valueInterface();
if (!valueIface)
return false;
bool success;
const QVariant currentVariant = valueIface->currentValue();
double stepSize = valueIface->minimumStepSize().toDouble(&success);
if (!success || qFuzzyIsNull(stepSize)) {
const double min = valueIface->minimumValue().toDouble(&success);
if (!success)
return false;
const double max = valueIface->maximumValue().toDouble(&success);
if (!success)
return false;
stepSize = (max - min) / 10; // this is pretty arbitrary, we just need to provide something
const int typ = currentVariant.userType();
if (typ != QMetaType::Float && typ != QMetaType::Double) {
// currentValue is an integer. Round it up to ensure stepping in case it was below 1
stepSize = qCeil(stepSize);
}
}
const double current = currentVariant.toDouble(&success);
if (!success)
return false;
if (actionName == QAccessibleActionInterface::decreaseAction())
stepSize = -stepSize;
valueIface->setCurrentValue(current + stepSize);
return true;
}
} //namespace
QT_END_NAMESPACE
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