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Diffstat (limited to 'src/gui/kernel/qmacgesturerecognizer_mac.mm')
| -rw-r--r-- | src/gui/kernel/qmacgesturerecognizer_mac.mm | 267 |
1 files changed, 267 insertions, 0 deletions
diff --git a/src/gui/kernel/qmacgesturerecognizer_mac.mm b/src/gui/kernel/qmacgesturerecognizer_mac.mm new file mode 100644 index 0000000..7b19a54 --- /dev/null +++ b/src/gui/kernel/qmacgesturerecognizer_mac.mm @@ -0,0 +1,267 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtGui module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** 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 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qmacgesturerecognizer_mac_p.h" +#include "qgesture.h" +#include "qgesture_p.h" +#include "qevent.h" +#include "qevent_p.h" +#include "qwidget.h" +#include "qdebug.h" + +QT_BEGIN_NAMESPACE + +QMacSwipeGestureRecognizer::QMacSwipeGestureRecognizer() +{ +} + +QGesture *QMacSwipeGestureRecognizer::createGesture(QObject * /*target*/) +{ + return new QSwipeGesture; +} + +QGestureRecognizer::Result +QMacSwipeGestureRecognizer::filterEvent(QGesture *gesture, QObject *obj, QEvent *event) +{ + if (event->type() == QEvent::NativeGesture && obj->isWidgetType()) { + QNativeGestureEvent *ev = static_cast<QNativeGestureEvent*>(event); + switch (ev->gestureType) { + case QNativeGestureEvent::Swipe: { + QSwipeGesture *g = static_cast<QSwipeGesture *>(gesture); + g->setSwipeAngle(ev->angle); + return QGestureRecognizer::GestureTriggered | QGestureRecognizer::ConsumeEventHint; + break; } + default: + break; + } + } + + return QGestureRecognizer::Ignore; +} + +void QMacSwipeGestureRecognizer::reset(QGesture *gesture) +{ + QSwipeGesture *g = static_cast<QSwipeGesture *>(gesture); + g->setSwipeAngle(0); + QGestureRecognizer::reset(gesture); +} + +//////////////////////////////////////////////////////////////////////// + +QMacPinchGestureRecognizer::QMacPinchGestureRecognizer() +{ +} + +QGesture *QMacPinchGestureRecognizer::createGesture(QObject * /*target*/) +{ + return new QPinchGesture; +} + +QGestureRecognizer::Result +QMacPinchGestureRecognizer::filterEvent(QGesture *gesture, QObject *obj, QEvent *event) +{ + if (event->type() == QEvent::NativeGesture && obj->isWidgetType()) { + QPinchGesture *g = static_cast<QPinchGesture *>(gesture); + QNativeGestureEvent *ev = static_cast<QNativeGestureEvent*>(event); + switch(ev->gestureType) { + case QNativeGestureEvent::GestureBegin: + reset(gesture); + g->setStartCenterPoint(static_cast<QWidget*>(obj)->mapFromGlobal(ev->position)); + g->setCenterPoint(g->startCenterPoint()); + g->setWhatChanged(QPinchGesture::CenterPointChanged); + return QGestureRecognizer::MaybeGesture | QGestureRecognizer::ConsumeEventHint; + case QNativeGestureEvent::Rotate: { + g->setLastScaleFactor(g->scaleFactor()); + g->setLastRotationAngle(g->rotationAngle()); + g->setRotationAngle(g->rotationAngle() + ev->percentage); + g->setWhatChanged(QPinchGesture::RotationAngleChanged); + return QGestureRecognizer::GestureTriggered | QGestureRecognizer::ConsumeEventHint; + break; + } + case QNativeGestureEvent::Zoom: + g->setLastScaleFactor(g->scaleFactor()); + g->setLastRotationAngle(g->rotationAngle()); + g->setScaleFactor(g->scaleFactor() + ev->percentage); + g->setWhatChanged(QPinchGesture::ScaleFactorChanged); + return QGestureRecognizer::GestureTriggered | QGestureRecognizer::ConsumeEventHint; + break; + case QNativeGestureEvent::GestureEnd: + return QGestureRecognizer::GestureFinished | QGestureRecognizer::ConsumeEventHint; + break; + default: + break; + } + } + + return QGestureRecognizer::Ignore; +} + +void QMacPinchGestureRecognizer::reset(QGesture *gesture) +{ + QPinchGesture *g = static_cast<QPinchGesture *>(gesture); + g->setWhatChanged(0); + g->setScaleFactor(1.0f); + g->setTotalScaleFactor(1.0f); + g->setLastScaleFactor(1.0f); + g->setRotationAngle(0.0f); + g->setTotalRotationAngle(0.0f); + g->setLastRotationAngle(0.0f); + g->setCenterPoint(QPointF()); + g->setStartCenterPoint(QPointF()); + g->setLastCenterPoint(QPointF()); + QGestureRecognizer::reset(gesture); +} + +//////////////////////////////////////////////////////////////////////// + +#if defined(QT_MAC_USE_COCOA) + +QMacPanGestureRecognizer::QMacPanGestureRecognizer() : _panCanceled(true) +{ +} + +QGesture *QMacPanGestureRecognizer::createGesture(QObject *target) +{ + if (!target) + return new QPanGesture; + + if (QWidget *w = qobject_cast<QWidget *>(target)) { + w->setAttribute(Qt::WA_AcceptTouchEvents); + w->setAttribute(Qt::WA_TouchPadAcceptSingleTouchEvents); + return new QPanGesture; + } + return 0; +} + +QGestureRecognizer::Result +QMacPanGestureRecognizer::filterEvent(QGesture *gesture, QObject *target, QEvent *event) +{ + const int panBeginDelay = 300; + const int panBeginRadius = 3; + + QPanGesture *g = static_cast<QPanGesture *>(gesture); + + switch (event->type()) { + case QEvent::TouchBegin: { + const QTouchEvent *ev = static_cast<const QTouchEvent*>(event); + if (ev->touchPoints().size() == 1) { + reset(gesture); + _startPos = QCursor::pos(); + _lastPos = _startPos; + _panTimer.start(panBeginDelay, target); + _panCanceled = false; + return QGestureRecognizer::MaybeGesture; + } + break;} + case QEvent::TouchEnd: { + if (_panCanceled) + break; + + const QTouchEvent *ev = static_cast<const QTouchEvent*>(event); + if (ev->touchPoints().size() == 1) + return QGestureRecognizer::GestureFinished; + break;} + case QEvent::TouchUpdate: { + if (_panCanceled) + break; + + const QTouchEvent *ev = static_cast<const QTouchEvent*>(event); + if (ev->touchPoints().size() == 1) { + if (_panTimer.isActive()) { + // INVARIANT: Still in maybeGesture. Check if the user + // moved his finger so much that it makes sense to cancel the pan: + const QPointF p = QCursor::pos(); + if ((p - _startPos).manhattanLength() > panBeginRadius) { + _panCanceled = true; + _panTimer.stop(); + return QGestureRecognizer::NotGesture; + } + } else { + const QPointF p = QCursor::pos(); + const QPointF posOffset = p - _lastPos; + g->setLastOffset(g->offset()); + g->setOffset(QSizeF(posOffset.x(), posOffset.y())); + g->setTotalOffset(g->lastOffset() + g->offset()); + _lastPos = p; + return QGestureRecognizer::GestureTriggered; + } + } else if (_panTimer.isActive()) { + // I only want to cancel the pan if the user is pressing + // more than one finger, and the pan hasn't started yet: + _panCanceled = true; + _panTimer.stop(); + return QGestureRecognizer::NotGesture; + } + break;} + case QEvent::Timer: { + QTimerEvent *ev = static_cast<QTimerEvent *>(event); + if (ev->timerId() == _panTimer.timerId()) { + _panTimer.stop(); + if (_panCanceled) + break; + // Begin new pan session! + _startPos = QCursor::pos(); + _lastPos = _startPos; + return QGestureRecognizer::GestureTriggered | QGestureRecognizer::ConsumeEventHint; + } + break; } + default: + break; + } + + return QGestureRecognizer::Ignore; +} + +void QMacPanGestureRecognizer::reset(QGesture *gesture) +{ + QPanGesture *g = static_cast<QPanGesture *>(gesture); + _startPos = QPointF(); + _lastPos = QPointF(); + _panCanceled = true; + g->setOffset(QSizeF(0, 0)); + g->setLastOffset(QSizeF(0, 0)); + g->setTotalOffset(QSizeF(0, 0)); + g->setAcceleration(qreal(1)); + QGestureRecognizer::reset(gesture); +} +#endif // QT_MAC_USE_COCOA + +QT_END_NAMESPACE |