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/****************************************************************************
**
** Copyright (C) 2019 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Virtual Keyboard module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL$
** 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 General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) 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.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-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QLoggingCategory>
#include <QTime>
#include <QGuiApplication>
#include <QMutableVectorIterator>
#include "handleatspievents.h"
#include "vkbhidetimer.h"
#include "atspi/atspi.h"
namespace {
const QString KAtspiBusLauncher = "at-spi-bus-launcher";
const QString KAtspiRegistryd = "at-spi2-registryd";
const int KProsessIsRunning = 0;
}
Q_LOGGING_CATEGORY(lcHandleAtspiEvents, "qt.virtualkeyboard.tests.manual.x11vkbwrapper.handleatspievents")
/**
* @brief focusEventFromInput Called when a widget is focused.
* @param event
* @param user_data
*/
void focusEventFromInput(AtspiEvent *event, void *user_data)
{
qCDebug(lcHandleAtspiEvents) << Q_FUNC_INFO;
auto *handleATSPIEvents = static_cast<HandleATSPIEvents *>(user_data);
handleATSPIEvents->gotFocusEventFromInput(event);
}
/**
* @brief HandleATSPIEvents::HandleATSPIEvents
* @param parent
*/
HandleATSPIEvents::HandleATSPIEvents(QObject *parent)
: QObject(parent),
m_keyboardVisible(false),
m_focuses(0)
{
}
/**
* @brief HandleATSPIEvents::~HandleATSPIEvents
*/
HandleATSPIEvents::~HandleATSPIEvents()
{
qCDebug(lcHandleAtspiEvents) << Q_FUNC_INFO;
m_focuses.clear();
if (!atspi_event_listener_deregister_from_callback(focusEventFromInput, static_cast<void*>(this), "object:state-changed:focused", nullptr)) {
qWarning() << "Error occurred: Problem deregistering focus listener";
}
}
/**
* @brief HandleATSPIEvents::init
* @return false if at-spi is not running or callback regitering fail
*/
bool HandleATSPIEvents::init()
{
qCDebug(lcHandleAtspiEvents) << Q_FUNC_INFO;
/** Check that At-spi is running */
if (KProsessIsRunning != system(QString("pidof -x %1 > /dev/null").arg(KAtspiBusLauncher).toLatin1().data()) ||
KProsessIsRunning != system(QString("pidof -x %1 > /dev/null").arg(KAtspiRegistryd).toLatin1().data())) {
qWarning() << "One or both of the At-Spi related processes are not running.";
return false;
}
GError *error = nullptr;
/** Registered the spi events to monitor focus and show on editable widgets. */
if (!atspi_event_listener_register_from_callback(focusEventFromInput,
static_cast<void*>(this),
nullptr,
"object:state-changed:focused",
&error)){
qWarning() << Q_FUNC_INFO << "Error occurred: ATSPI listener register failed. Error message:" << error->message;
return false;
}
QObject::connect(QGuiApplication::inputMethod(), &QInputMethod::visibleChanged, [this] {
this->setKeyboardVisible(QGuiApplication::inputMethod()->isVisible());
});
return true;
}
/**
* @brief handleATSPIEvents::setKeyboardVisible
* @param visible
*/
void HandleATSPIEvents::setKeyboardVisible(const bool visible)
{
if (m_keyboardVisible != visible) {
m_keyboardVisible = visible;
qCDebug(lcHandleAtspiEvents) << "SET VKB visible " << visible;
if (m_keyboardVisible && !QGuiApplication::inputMethod()->isVisible()) {
QGuiApplication::inputMethod()->show();
} else {
QGuiApplication::inputMethod()->hide();
}
}
}
/**
* @brief handleATSPIEvents::storeFocusElement
* @param role
* @param focus
*/
void HandleATSPIEvents::storeFocusElement(const qint8 role)
{
m_focuses.append(role);
qCDebug(lcHandleAtspiEvents) << "*****INSERTED FOCUS ELEMENT*****" << role << "TOTAL:" << m_focuses.length();
}
/**
* @brief handleATSPIEvents::isThereFocus
* AT-SPI focus in/out events are received in random order and for some
* objects AT-SPI doesn't send any focus OUT event at all.
* This function keeps track if there's an accepted type of object in focus and
* knows to release/ignore the objects that do not receive focus OUT event.
* @param role
*/
bool HandleATSPIEvents::isThereFocus(const qint8 role)
{
qCDebug(lcHandleAtspiEvents) << " FOCUS ELEMENT to EXAMINE: " << role;
qint8 roleValue = ATSPI_ROLE_INVALID;
for (auto iter = m_focuses.begin() ; iter != m_focuses.end() ; iter++) {
roleValue = *iter;
if (roleValue == role ||
roleValue == ATSPI_ROLE_DOCUMENT_WEB ||
roleValue == ATSPI_ROLE_ENTRY ||
roleValue == ATSPI_ROLE_LINK) {
qCDebug(lcHandleAtspiEvents) << "*****REMOVING FOCUS ELEMENT*****: " << *iter;
m_focuses.erase(iter--);
}
}
m_focuses.squeeze();
return !m_focuses.isEmpty();
}
/**
* @brief handleATSPIEvents::gotFocusEventFromInput
* @param event
*/
void HandleATSPIEvents::gotFocusEventFromInput(const AtspiEvent *event)
{
qCDebug(lcHandleAtspiEvents) << Q_FUNC_INFO << event->type << event->detail1 << event->detail2 << QTime::currentTime().toString();
GError *error = nullptr;
AtspiStateSet *state_set = atspi_accessible_get_state_set(event->source);
AtspiRole role = atspi_accessible_get_role(event->source, &error);
if (error) {
qCDebug(lcHandleAtspiEvents) << Q_FUNC_INFO << "Event error message:" << error->message;
}
qCDebug(lcHandleAtspiEvents) << "ATSPI focus event received. Object role=" << role;
if ((((role == ATSPI_ROLE_TERMINAL) || (role == ATSPI_ROLE_PANEL) ||
(role == ATSPI_ROLE_TABLE_CELL) ||
(((role == ATSPI_ROLE_TEXT) ||
(role == ATSPI_ROLE_PASSWORD_TEXT) ||
(role == ATSPI_ROLE_SECTION) ||
(role == ATSPI_ROLE_PARAGRAPH) ||
(role = ATSPI_ROLE_ENTRY)) &&
state_set &&
atspi_state_set_contains(state_set, ATSPI_STATE_EDITABLE))))) {
if (event->detail1) {
qCDebug(lcHandleAtspiEvents) << "ACCEPTED FOCUS IN";
VkbHideTimer::getInstance()->startTimer();
this->storeFocusElement(role);
if (!m_keyboardVisible) {
setKeyboardVisible(true);
}
} else if (m_keyboardVisible && !isThereFocus(role)) {
setKeyboardVisible(false);
}
} else {
qCDebug(lcHandleAtspiEvents) << " ELSE: SET VKB visible FALSE";
setKeyboardVisible(false);
m_focuses.clear();
m_focuses.squeeze();
}
}
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