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Diffstat (limited to 'src/compositor/compositor_api/qwaylandtouch.cpp')
| -rw-r--r-- | src/compositor/compositor_api/qwaylandtouch.cpp | 271 |
1 files changed, 271 insertions, 0 deletions
diff --git a/src/compositor/compositor_api/qwaylandtouch.cpp b/src/compositor/compositor_api/qwaylandtouch.cpp new file mode 100644 index 000000000..743730254 --- /dev/null +++ b/src/compositor/compositor_api/qwaylandtouch.cpp @@ -0,0 +1,271 @@ +/**************************************************************************** +** +** Copyright (C) 2015 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 "qwaylandtouch.h" +#include "qwaylandtouch_p.h" + +#include <QtWaylandCompositor/QWaylandCompositor> +#include <QtWaylandCompositor/QWaylandInputDevice> +#include <QtWaylandCompositor/QWaylandView> +#include <QtWaylandCompositor/QWaylandClient> + +#include <QtWaylandCompositor/private/qwlqttouch_p.h> + +QT_BEGIN_NAMESPACE + +QWaylandTouchPrivate::QWaylandTouchPrivate(QWaylandTouch *touch, QWaylandInputDevice *seat) + : wl_touch() + , seat(seat) + , focusResource() +{ +} + +void QWaylandTouchPrivate::resetFocusState() +{ + focusDestroyListener.reset(); + focusResource = 0; +} + +void QWaylandTouchPrivate::touch_destroy_resource(Resource *resource) +{ + if (focusResource == resource) { + resetFocusState(); + } +} + +void QWaylandTouchPrivate::touch_release(Resource *resource) +{ + wl_resource_destroy(resource->handle); +} + +void QWaylandTouchPrivate::sendDown(uint32_t time, int touch_id, const QPointF &position) +{ + Q_Q(QWaylandTouch); + if (focusResource || q->mouseFocus()) + return; + + uint32_t serial = q->compositor()->nextSerial(); + + wl_touch_send_down(focusResource->handle, serial, time, q->mouseFocus()->surfaceResource(), touch_id, + wl_fixed_from_double(position.x()), wl_fixed_from_double(position.y())); +} + +void QWaylandTouchPrivate::sendUp(uint32_t time, int touch_id) +{ + if (focusResource) + return; + + uint32_t serial = compositor()->nextSerial(); + + wl_touch_send_up(focusResource->handle, serial, time, touch_id); +} +void QWaylandTouchPrivate::sendMotion(uint32_t time, int touch_id, const QPointF &position) +{ + if (!focusResource) + return; + + wl_touch_send_motion(focusResource->handle, time, touch_id, + wl_fixed_from_double(position.x()), wl_fixed_from_double(position.y())); +} + +/*! + * \class QWaylandTouch + * \inmodule QtWaylandCompositor + * \brief The QWaylandTouch class provides access to a touch device. + * + * This class provides access to the touch device in a QWaylandInputDevice. It corresponds to + * the Wayland interface wl_touch. + */ + +/*! + * Constructs a QWaylandTouch for the \a inputDevice and with the given \a parent. + */ +QWaylandTouch::QWaylandTouch(QWaylandInputDevice *inputDevice, QObject *parent) + : QWaylandObject(*new QWaylandTouchPrivate(this, inputDevice), parent) +{ + connect(&d_func()->focusDestroyListener, &QWaylandDestroyListener::fired, this, &QWaylandTouch::focusDestroyed); +} + +/*! + * Returns the input device for this QWaylandTouch. + */ +QWaylandInputDevice *QWaylandTouch::inputDevice() const +{ + Q_D(const QWaylandTouch); + return d->seat; +} + +/*! + * Returns the compositor for this QWaylandTouch. + */ +QWaylandCompositor *QWaylandTouch::compositor() const +{ + Q_D(const QWaylandTouch); + return d->compositor(); +} + +/*! + * Sends a touch point event for the touch device with the given \a id, + * \a position, and \a state. + * + * + * \sa mouseFocus() + */ +void QWaylandTouch::sendTouchPointEvent(int id, const QPointF &position, Qt::TouchPointState state) +{ + Q_D(QWaylandTouch); + uint32_t time = compositor()->currentTimeMsecs(); + switch (state) { + case Qt::TouchPointPressed: + d->sendDown(time, id, position); + break; + case Qt::TouchPointMoved: + d->sendMotion(time, id, position); + break; + case Qt::TouchPointReleased: + d->sendUp(time, id); + break; + case Qt::TouchPointStationary: + // stationary points are not sent through wayland, the client must cache them + break; + default: + break; + } +} + +/*! + * Sends a touch frame event for the touch device. This indicates the end of a + * contact point list. + */ +void QWaylandTouch::sendFrameEvent() +{ + Q_D(QWaylandTouch); + if (d->focusResource) + d->send_frame(d->focusResource->handle); +} + +/*! + * Sends a touch cancel event for the touch device. + */ +void QWaylandTouch::sendCancelEvent() +{ + Q_D(QWaylandTouch); + if (d->focusResource) + d->send_cancel(d->focusResource->handle); +} + +/*! + * Sends all the touch points in \a event for this touch device, followed + * by a touch frame event. + * + * \sa sendTouchPointEvent(), sendFrameEvent() + */ +void QWaylandTouch::sendFullTouchEvent(QTouchEvent *event) +{ + Q_D(QWaylandTouch); + if (event->type() == QEvent::TouchCancel) { + sendCancelEvent(); + return; + } + + QtWayland::TouchExtensionGlobal *ext = QtWayland::TouchExtensionGlobal::findIn(d->compositor()); + if (ext && ext->postTouchEvent(event, d->seat->mouseFocus())) + return; + + const QList<QTouchEvent::TouchPoint> points = event->touchPoints(); + if (points.isEmpty()) + return; + + const int pointCount = points.count(); + for (int i = 0; i < pointCount; ++i) { + const QTouchEvent::TouchPoint &tp(points.at(i)); + // Convert the local pos in the compositor window to surface-relative. + sendTouchPointEvent(tp.id(), tp.pos(), tp.state()); + } + sendFrameEvent(); +} + +/*! + * \internal + */ +void QWaylandTouch::addClient(QWaylandClient *client, uint32_t id, uint32_t version) +{ + Q_D(QWaylandTouch); + d->add(client->client(), id, qMin<uint32_t>(QtWaylandServer::wl_touch::interfaceVersion(), version)); +} + +/*! + * Returns the Wayland resource for this QWaylandTouch. + */ +struct wl_resource *QWaylandTouch::focusResource() const +{ + Q_D(const QWaylandTouch); + if (!d->focusResource) + return Q_NULLPTR; + return d->focusResource->handle; +} + +/*! + * Returns the view currently holding mouse focus in the input device. + */ +QWaylandView *QWaylandTouch::mouseFocus() const +{ + Q_D(const QWaylandTouch); + return d->seat->mouseFocus(); +} + +/*! + * \internal + */ +void QWaylandTouch::focusDestroyed(void *data) +{ + Q_UNUSED(data) + Q_D(QWaylandTouch); + d->resetFocusState(); +} + +/*! + * \internal + */ +void QWaylandTouch::mouseFocusChanged(QWaylandView *newFocus, QWaylandView *oldFocus) +{ + Q_UNUSED(newFocus); + Q_UNUSED(oldFocus); + Q_D(QWaylandTouch); + d->resetFocusState(); +} + +QT_END_NAMESPACE |