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// Copyright (C) 2016 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
// Qt-Security score:significant reason:default
#include "qwaylandinputcontext_p.h"
#include <QtGui/QGuiApplication>
#include <QtGui/QTextCharFormat>
#include <QtGui/QWindow>
#include <QtCore/QVarLengthArray>
#include "qwaylanddisplay_p.h"
#include "qwaylandinputdevice_p.h"
#include "qwaylandwindow_p.h"
#if QT_CONFIG(xkbcommon)
#include <locale.h>
#endif
QT_BEGIN_NAMESPACE
Q_LOGGING_CATEGORY(qLcQpaInputMethods, "qt.qpa.input.methods")
namespace QtWaylandClient {
QWaylandInputContext::QWaylandInputContext(QWaylandDisplay *display)
: mDisplay(display)
{
}
QWaylandInputContext::~QWaylandInputContext()
{
#if QT_CONFIG(xkbcommon)
xkb_compose_state_unref(m_composeState);
xkb_compose_table_unref(m_composeTable);
#endif
}
bool QWaylandInputContext::isValid() const
{
return mDisplay->textInputManagerv2() != nullptr || mDisplay->textInputManagerv1() != nullptr || mDisplay->textInputManagerv3() != nullptr;
}
void QWaylandInputContext::reset()
{
qCDebug(qLcQpaInputMethods) << Q_FUNC_INFO;
#if QT_CONFIG(xkbcommon)
if (m_composeState)
xkb_compose_state_reset(m_composeState);
#endif
QPlatformInputContext::reset();
QWaylandTextInputInterface *inputInterface = textInput();
if (!inputInterface)
return;
inputInterface->reset();
}
void QWaylandInputContext::commit()
{
qCDebug(qLcQpaInputMethods) << Q_FUNC_INFO;
QWaylandTextInputInterface *inputInterface = textInput();
if (!inputInterface)
return;
inputInterface->commit();
}
static ::wl_surface *surfaceForWindow(QWindow *window)
{
if (!window || !window->handle())
return nullptr;
auto *waylandWindow = static_cast<QWaylandWindow *>(window->handle());
return waylandWindow->wlSurface();
}
void QWaylandInputContext::update(Qt::InputMethodQueries queries)
{
qCDebug(qLcQpaInputMethods) << Q_FUNC_INFO << queries;
QWaylandTextInputInterface *inputInterface = textInput();
// When a client changing focusObject, update could be called
// before setFocusObject, but it will not be processed.
if ((m_focusObject != QGuiApplication::focusObject()) || !inputInterface)
return;
inputInterface->updateState(queries, QWaylandTextInputInterface::update_state_change);
}
void QWaylandInputContext::invokeAction(QInputMethod::Action action, int cursorPostion)
{
QWaylandTextInputInterface *inputInterface = textInput();
if (!inputInterface)
return;
if (action == QInputMethod::Click)
inputInterface->setCursorInsidePreedit(cursorPostion);
}
void QWaylandInputContext::showInputPanel()
{
qCDebug(qLcQpaInputMethods) << Q_FUNC_INFO;
QWaylandTextInputInterface *inputInterface = textInput();
if (!inputInterface)
return;
inputInterface->showInputPanel();
}
void QWaylandInputContext::hideInputPanel()
{
qCDebug(qLcQpaInputMethods) << Q_FUNC_INFO;
QWaylandTextInputInterface *inputInterface = textInput();
if (!inputInterface)
return;
inputInterface->hideInputPanel();
}
bool QWaylandInputContext::isInputPanelVisible() const
{
qCDebug(qLcQpaInputMethods) << Q_FUNC_INFO;
QWaylandTextInputInterface *inputInterface = textInput();
if (!inputInterface)
return QPlatformInputContext::isInputPanelVisible();
return inputInterface->isInputPanelVisible();
}
QRectF QWaylandInputContext::keyboardRect() const
{
qCDebug(qLcQpaInputMethods) << Q_FUNC_INFO;
QWaylandTextInputInterface *inputInterface = textInput();
if (!inputInterface)
return QPlatformInputContext::keyboardRect();
return inputInterface->keyboardRect();
}
QLocale QWaylandInputContext::locale() const
{
qCDebug(qLcQpaInputMethods) << Q_FUNC_INFO;
QWaylandTextInputInterface *inputInterface = textInput();
if (!inputInterface)
return QPlatformInputContext::locale();
return inputInterface->locale();
}
Qt::LayoutDirection QWaylandInputContext::inputDirection() const
{
qCDebug(qLcQpaInputMethods) << Q_FUNC_INFO;
QWaylandTextInputInterface *inputInterface = textInput();
if (!inputInterface)
return QPlatformInputContext::inputDirection();
return inputInterface->inputDirection();
}
void QWaylandInputContext::setFocusObject(QObject *object)
{
qCDebug(qLcQpaInputMethods) << Q_FUNC_INFO;
QWaylandTextInputInterface *inputInterface = textInput();
if (!inputInterface)
return;
if (m_focusObject == object)
return;
if (mCurrentWindow) {
if (auto currentSurface = surfaceForWindow(mCurrentWindow))
inputInterface->disableSurface(currentSurface);
mCurrentWindow.clear();
}
if (object && inputMethodAccepted()) {
mCurrentWindow = QGuiApplication::focusWindow();
if (auto currentSurface = surfaceForWindow(mCurrentWindow)) {
inputInterface->enableSurface(currentSurface);
inputInterface->updateState(Qt::ImQueryAll, QWaylandTextInputInterface::update_state_enter);
}
}
m_focusObject = object;
}
QWaylandTextInputInterface *QWaylandInputContext::textInput() const
{
return mDisplay->defaultInputDevice() ? mDisplay->defaultInputDevice()->textInput() : nullptr;
}
#if QT_CONFIG(xkbcommon)
void QWaylandInputContext::ensureInitialized()
{
if (m_initialized)
return;
if (!m_XkbContext) {
qCWarning(qLcQpaInputMethods) << "error: xkb context has not been set on" << metaObject()->className();
return;
}
m_initialized = true;
const char *const locale = setlocale(LC_CTYPE, nullptr);
qCDebug(qLcQpaInputMethods) << "detected locale (LC_CTYPE):" << locale;
m_composeTable = xkb_compose_table_new_from_locale(m_XkbContext, locale, XKB_COMPOSE_COMPILE_NO_FLAGS);
if (m_composeTable)
m_composeState = xkb_compose_state_new(m_composeTable, XKB_COMPOSE_STATE_NO_FLAGS);
if (!m_composeTable) {
qCWarning(qLcQpaInputMethods, "failed to create compose table");
return;
}
if (!m_composeState) {
qCWarning(qLcQpaInputMethods, "failed to create compose state");
return;
}
}
bool QWaylandInputContext::filterEvent(const QEvent *event)
{
auto keyEvent = static_cast<const QKeyEvent *>(event);
if (keyEvent->type() != QEvent::KeyPress)
return false;
if (!inputMethodAccepted())
return false;
// lazy initialization - we don't want to do this on an app startup
ensureInitialized();
if (!m_composeTable || !m_composeState)
return false;
xkb_compose_state_feed(m_composeState, keyEvent->nativeVirtualKey());
switch (xkb_compose_state_get_status(m_composeState)) {
case XKB_COMPOSE_COMPOSING:
return true;
case XKB_COMPOSE_CANCELLED:
reset();
return false;
case XKB_COMPOSE_COMPOSED:
{
const int size = xkb_compose_state_get_utf8(m_composeState, nullptr, 0);
QVarLengthArray<char, 32> buffer(size + 1);
xkb_compose_state_get_utf8(m_composeState, buffer.data(), buffer.size());
QString composedText = QString::fromUtf8(buffer.constData());
QInputMethodEvent event;
event.setCommitString(composedText);
if (!m_focusObject && qApp)
m_focusObject = qApp->focusObject();
if (m_focusObject)
QCoreApplication::sendEvent(m_focusObject, &event);
else
qCWarning(qLcQpaInputMethods, "no focus object");
reset();
return true;
}
case XKB_COMPOSE_NOTHING:
return false;
default:
Q_UNREACHABLE_RETURN(false);
}
}
#endif
}
QT_END_NAMESPACE
#include "moc_qwaylandinputcontext_p.cpp"