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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtWaylandCompositor module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL3$
** 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 http://www.qt.io/terms-conditions. For further
** information use the contact form at http://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.LGPLv3 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.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 later 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 2.0 requirements will be
** met: http://www.gnu.org/licenses/gpl-2.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qwaylandwlshellintegration_p.h"
#include <QtWaylandCompositor/QWaylandCompositor>
#include <QtWaylandCompositor/QWaylandWlShellSurface>
#include <QtWaylandCompositor/QWaylandQuickShellSurfaceItem>
#include <QtWaylandCompositor/QWaylandInputDevice>
#include <QGuiApplication>
namespace QtWayland {
WlShellIntegration::WlShellIntegration(QWaylandQuickShellSurfaceItem *item)
: QWaylandQuickShellIntegration(item)
, m_item(item)
, m_shellSurface(qobject_cast<QWaylandWlShellSurface *>(item->shellSurface()))
, grabberState(GrabberState::Default)
, isPopup(false)
{
m_item->setSurface(m_shellSurface->surface());
connect(m_shellSurface, &QWaylandWlShellSurface::startMove, this, &WlShellIntegration::handleStartMove);
connect(m_shellSurface, &QWaylandWlShellSurface::startResize, this, &WlShellIntegration::handleStartResize);
connect(m_shellSurface->surface(), &QWaylandSurface::offsetForNextFrame, this, &WlShellIntegration::adjustOffsetForNextFrame);
connect(m_shellSurface, &QWaylandWlShellSurface::setPopup, this, &WlShellIntegration::handleSetPopup);
connect(m_shellSurface, &QWaylandWlShellSurface::destroyed, this, &WlShellIntegration::handleShellSurfaceDestroyed);
}
void WlShellIntegration::handleStartMove(QWaylandInputDevice *inputDevice)
{
grabberState = GrabberState::Move;
moveState.inputDevice = inputDevice;
moveState.initialized = false;
}
void WlShellIntegration::handleStartResize(QWaylandInputDevice *inputDevice, QWaylandWlShellSurface::ResizeEdge edges)
{
grabberState = GrabberState::Resize;
resizeState.inputDevice = inputDevice;
resizeState.resizeEdges = edges;
float scaleFactor = m_item->view()->output()->scaleFactor();
resizeState.initialSize = m_shellSurface->surface()->size() / scaleFactor;
resizeState.initialized = false;
}
void WlShellIntegration::handleSetPopup(QWaylandInputDevice *inputDevice, QWaylandSurface *parent, const QPoint &relativeToParent)
{
Q_UNUSED(inputDevice);
QWaylandQuickShellSurfaceItem* parentItem = qobject_cast<QWaylandQuickShellSurfaceItem*>(parent->views().first()->renderObject());
if (parentItem) {
// Clear all the transforms for this ShellSurfaceItem. They are not
// applicable when the item becomes a child to a surface that has its
// own transforms. Otherwise the transforms would be applied twice.
QQmlListProperty<QQuickTransform> t = m_item->transform();
t.clear(&t);
m_item->setRotation(0);
m_item->setScale(1.0);
m_item->setX(relativeToParent.x());
m_item->setY(relativeToParent.y());
m_item->setParentItem(parentItem);
}
setIsPopup(true);
}
void WlShellIntegration::handleShellSurfaceDestroyed() {
setIsPopup(false);
m_shellSurface = nullptr;
}
void WlShellIntegration::handleSurfaceUnmapped()
{
if (!m_shellSurface || !m_shellSurface->surface()->size().isEmpty())
return;
setIsPopup(false);
}
void WlShellIntegration::adjustOffsetForNextFrame(const QPointF &offset)
{
float scaleFactor = m_item->view()->output()->scaleFactor();
QQuickItem *moveItem = m_item->moveItem();
moveItem->setPosition(moveItem->position() + offset * scaleFactor);
}
bool WlShellIntegration::mouseMoveEvent(QMouseEvent *event)
{
if (grabberState == GrabberState::Resize) {
Q_ASSERT(resizeState.inputDevice == m_item->compositor()->inputDeviceFor(event));
if (!resizeState.initialized) {
resizeState.initialMousePos = event->windowPos();
resizeState.initialized = true;
return true;
}
float scaleFactor = m_item->view()->output()->scaleFactor();
QPointF delta = (event->windowPos() - resizeState.initialMousePos) / scaleFactor;
QSize newSize = m_shellSurface->sizeForResize(resizeState.initialSize, delta, resizeState.resizeEdges);
m_shellSurface->sendConfigure(newSize, resizeState.resizeEdges);
} else if (grabberState == GrabberState::Move) {
Q_ASSERT(moveState.inputDevice == m_item->compositor()->inputDeviceFor(event));
QQuickItem *moveItem = m_item->moveItem();
if (!moveState.initialized) {
moveState.initialOffset = moveItem->mapFromItem(nullptr, event->windowPos());
moveState.initialized = true;
return true;
}
if (!moveItem->parentItem())
return true;
QPointF parentPos = moveItem->parentItem()->mapFromItem(nullptr, event->windowPos());
moveItem->setPosition(parentPos - moveState.initialOffset);
}
return false;
}
bool WlShellIntegration::mouseReleaseEvent(QMouseEvent *event)
{
Q_UNUSED(event);
if (grabberState != GrabberState::Default) {
grabberState = GrabberState::Default;
return true;
}
return false;
}
QVector<QWaylandWlShellSurface*> WlShellIntegration::popupShellSurfaces;
bool WlShellIntegration::eventFilterInstalled = false;
bool WlShellIntegration::waitForRelease = false;
void WlShellIntegration::closePopups()
{
if (!popupShellSurfaces.isEmpty()) {
Q_FOREACH (QWaylandWlShellSurface* shellSurface, popupShellSurfaces) {
shellSurface->sendPopupDone();
}
popupShellSurfaces.clear();
}
}
bool WlShellIntegration::eventFilter(QObject *receiver, QEvent *e)
{
if (e->type() == QEvent::MouseButtonPress || e->type() == QEvent::MouseButtonRelease) {
QQuickItem *item = qobject_cast<QQuickItem*>(receiver);
if (!item)
return false;
QMouseEvent *event = static_cast<QMouseEvent*>(e);
QWaylandQuickShellSurfaceItem *shellSurfaceItem = qobject_cast<QWaylandQuickShellSurfaceItem*>(item);
bool press = event->type() == QEvent::MouseButtonPress;
bool finalRelease = (event->type() == QEvent::MouseButtonRelease) && (event->buttons() == Qt::NoButton);
bool popupClient = shellSurfaceItem && shellSurfaceItem->surface()->client() == m_shellSurface->surface()->client();
if (waitForRelease) {
// We are eating events until all mouse buttons are released
if (finalRelease) {
waitForRelease = false;
setFilterEnabled(false);
}
return true;
}
if (press && !popupClient) {
// The user clicked outside the active popup's client. The popups should
// be closed, but the event filter will stay to catch the release-
// event before removing itself.
waitForRelease = true;
closePopups();
return true;
} else if (press) {
// There is a surface belonging to this client at this coordinate, so we can
// remove the event filter and let the normal event handler handle
// this event.
setFilterEnabled(false);
}
}
return false;
}
void WlShellIntegration::setIsPopup(bool popup)
{
isPopup = popup;
if (popup) {
if (!eventFilterInstalled)
setFilterEnabled(true);
if (!popupShellSurfaces.contains(m_shellSurface)) {
popupShellSurfaces.append(m_shellSurface);
QObject::connect(m_shellSurface->surface(), &QWaylandSurface::mappedChanged,
this, &WlShellIntegration::handleSurfaceUnmapped);
}
} else {
if (m_shellSurface) {
popupShellSurfaces.removeOne(m_shellSurface);
QObject::disconnect(m_shellSurface->surface(), &QWaylandSurface::mappedChanged,
this, &WlShellIntegration::handleSurfaceUnmapped);
}
if (!waitForRelease && eventFilterInstalled && popupShellSurfaces.isEmpty())
setFilterEnabled(false);
}
}
void WlShellIntegration::setFilterEnabled(bool enabled)
{
static QPointer<QObject> filter;
if (enabled && filter.isNull()) {
qGuiApp->installEventFilter(this);
filter = this;
} else if (!enabled && !filter.isNull()){
qGuiApp->removeEventFilter(filter);
filter = nullptr;
}
eventFilterInstalled = enabled;
}
}
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