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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qwaylandtouch_p.h"
#include "qwaylandinputdevice_p.h"
#include "qwaylanddisplay_p.h"
QT_BEGIN_NAMESPACE
namespace QtWaylandClient {
QWaylandTouchExtension::QWaylandTouchExtension(QWaylandDisplay *display, uint32_t id)
: QtWayland::qt_touch_extension(display->wl_registry(), id, 1),
mDisplay(display),
mTouchDevice(0),
mPointsLeft(0),
mFlags(0),
mMouseSourceId(-1),
mInputDevice(0)
{
}
void QWaylandTouchExtension::registerDevice(int caps)
{
mTouchDevice = new QTouchDevice;
mTouchDevice->setType(QTouchDevice::TouchScreen);
mTouchDevice->setCapabilities(QTouchDevice::Capabilities(caps));
QWindowSystemInterface::registerTouchDevice(mTouchDevice);
}
static inline qreal fromFixed(int f)
{
return f / qreal(10000);
}
void QWaylandTouchExtension::touch_extension_touch(uint32_t time,
uint32_t id, uint32_t state, int32_t x, int32_t y,
int32_t normalized_x, int32_t normalized_y,
int32_t width, int32_t height, uint32_t pressure,
int32_t velocity_x, int32_t velocity_y,
uint32_t flags, wl_array *rawdata)
{
if (!mInputDevice) {
QList<QWaylandInputDevice *> inputDevices = mDisplay->inputDevices();
if (inputDevices.isEmpty()) {
qWarning("qt_touch_extension: handle_touch: No input devices");
return;
}
mInputDevice = inputDevices.first();
}
QWaylandWindow *win = mInputDevice->touchFocus();
if (!win)
win = mInputDevice->pointerFocus();
if (!win)
win = mInputDevice->keyboardFocus();
if (!win || !win->window()) {
qWarning("qt_touch_extension: handle_touch: No pointer focus");
return;
}
mTargetWindow = win->window();
QWindowSystemInterface::TouchPoint tp;
tp.id = id;
tp.state = Qt::TouchPointState(int(state & 0xFFFF));
int sentPointCount = state >> 16;
if (!mPointsLeft) {
Q_ASSERT(sentPointCount > 0);
mPointsLeft = sentPointCount;
}
tp.flags = QTouchEvent::TouchPoint::InfoFlags(int(flags & 0xFFFF));
if (!mTouchDevice)
registerDevice(flags >> 16);
tp.area = QRectF(0, 0, fromFixed(width), fromFixed(height));
// Got surface-relative coords but need a (virtual) screen position.
QPointF relPos = QPointF(fromFixed(x), fromFixed(y));
QPointF delta = relPos - relPos.toPoint();
tp.area.moveCenter(mTargetWindow->mapToGlobal(relPos.toPoint()) + delta);
tp.normalPosition.setX(fromFixed(normalized_x));
tp.normalPosition.setY(fromFixed(normalized_y));
tp.pressure = pressure / 255.0;
tp.velocity.setX(fromFixed(velocity_x));
tp.velocity.setY(fromFixed(velocity_y));
if (rawdata) {
const int rawPosCount = rawdata->size / sizeof(float) / 2;
float *p = static_cast<float *>(rawdata->data);
for (int i = 0; i < rawPosCount; ++i) {
float x = *p++;
float y = *p++;
tp.rawPositions.append(QPointF(x, y));
}
}
mTouchPoints.append(tp);
mTimestamp = time;
if (!--mPointsLeft)
sendTouchEvent();
}
void QWaylandTouchExtension::sendTouchEvent()
{
// Copy all points, that are in the previous but not in the current list, as stationary.
for (int i = 0; i < mPrevTouchPoints.count(); ++i) {
const QWindowSystemInterface::TouchPoint &prevPoint(mPrevTouchPoints.at(i));
if (prevPoint.state == Qt::TouchPointReleased)
continue;
bool found = false;
for (int j = 0; j < mTouchPoints.count(); ++j)
if (mTouchPoints.at(j).id == prevPoint.id) {
found = true;
break;
}
if (!found) {
QWindowSystemInterface::TouchPoint p = prevPoint;
p.state = Qt::TouchPointStationary;
mTouchPoints.append(p);
}
}
if (mTouchPoints.isEmpty()) {
mPrevTouchPoints.clear();
return;
}
QWindowSystemInterface::handleTouchEvent(mTargetWindow, mTimestamp, mTouchDevice, mTouchPoints);
Qt::TouchPointStates states = 0;
for (int i = 0; i < mTouchPoints.count(); ++i)
states |= mTouchPoints.at(i).state;
if (mFlags & QT_TOUCH_EXTENSION_FLAGS_MOUSE_FROM_TOUCH) {
if (states == Qt::TouchPointPressed)
mMouseSourceId = mTouchPoints.first().id;
for (int i = 0; i < mTouchPoints.count(); ++i) {
const QWindowSystemInterface::TouchPoint &tp(mTouchPoints.at(i));
if (tp.id == mMouseSourceId) {
Qt::MouseButtons buttons = tp.state == Qt::TouchPointReleased ? Qt::NoButton : Qt::LeftButton;
mLastMouseGlobal = tp.area.center();
QPoint globalPoint = mLastMouseGlobal.toPoint();
QPointF delta = mLastMouseGlobal - globalPoint;
mLastMouseLocal = mTargetWindow->mapFromGlobal(globalPoint) + delta;
QWindowSystemInterface::handleMouseEvent(mTargetWindow, mTimestamp, mLastMouseLocal, mLastMouseGlobal, buttons);
if (buttons == Qt::NoButton)
mMouseSourceId = -1;
break;
}
}
}
mPrevTouchPoints = mTouchPoints;
mTouchPoints.clear();
if (states == Qt::TouchPointReleased)
mPrevTouchPoints.clear();
}
void QWaylandTouchExtension::touchCanceled()
{
mTouchPoints.clear();
mPrevTouchPoints.clear();
if (mMouseSourceId != -1)
QWindowSystemInterface::handleMouseEvent(mTargetWindow, mTimestamp, mLastMouseLocal, mLastMouseGlobal, Qt::NoButton);
}
void QWaylandTouchExtension::touch_extension_configure(uint32_t flags)
{
mFlags = flags;
}
}
QT_END_NAMESPACE
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