| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the test suite of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:GPL-EXCEPT$ |
| ** 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 |
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| ** information use the contact form at https://www.qt.io/contact-us. |
| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 3 as published by the Free Software |
| ** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT |
| ** included in the packaging of this file. Please review the following |
| ** information to ensure the GNU General Public License requirements will |
| ** be met: https://www.gnu.org/licenses/gpl-3.0.html. |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #include "mousepangesturerecognizer.h" |
| |
| #include <QEvent> |
| #include <QVariant> |
| #include <QGraphicsSceneMouseEvent> |
| #include <QMouseEvent> |
| #include <QGesture> |
| |
| MousePanGestureRecognizer::MousePanGestureRecognizer() |
| { |
| } |
| |
| QGesture* MousePanGestureRecognizer::create(QObject *) |
| { |
| return new QPanGesture; |
| } |
| |
| QGestureRecognizer::Result MousePanGestureRecognizer::recognize(QGesture *state, QObject *, QEvent *event) |
| { |
| QPanGesture *g = static_cast<QPanGesture *>(state); |
| QPoint globalPos; |
| switch (event->type()) { |
| case QEvent::GraphicsSceneMousePress: |
| case QEvent::GraphicsSceneMouseDoubleClick: |
| case QEvent::GraphicsSceneMouseMove: |
| case QEvent::GraphicsSceneMouseRelease: |
| globalPos = static_cast<QGraphicsSceneMouseEvent *>(event)->screenPos(); |
| break; |
| case QEvent::MouseButtonPress: |
| case QEvent::MouseMove: |
| case QEvent::MouseButtonRelease: |
| globalPos = static_cast<QMouseEvent *>(event)->globalPos(); |
| break; |
| default: |
| break; |
| } |
| if (event->type() == QEvent::MouseButtonPress || event->type() == QEvent::MouseButtonDblClick |
| || event->type() == QEvent::GraphicsSceneMousePress || event->type() == QEvent::GraphicsSceneMouseDoubleClick) { |
| g->setHotSpot(globalPos); |
| g->setProperty("startPos", globalPos); |
| g->setProperty("pressed", QVariant::fromValue<bool>(true)); |
| return QGestureRecognizer::TriggerGesture | QGestureRecognizer::ConsumeEventHint; |
| } else if (event->type() == QEvent::MouseMove || event->type() == QEvent::GraphicsSceneMouseMove) { |
| if (g->property("pressed").toBool()) { |
| QPoint offset = globalPos - g->property("startPos").toPoint(); |
| g->setLastOffset(g->offset()); |
| g->setOffset(QPointF(offset.x(), offset.y())); |
| return QGestureRecognizer::TriggerGesture | QGestureRecognizer::ConsumeEventHint; |
| } |
| return QGestureRecognizer::CancelGesture; |
| } else if (event->type() == QEvent::MouseButtonRelease || event->type() == QEvent::GraphicsSceneMouseRelease) { |
| return QGestureRecognizer::FinishGesture | QGestureRecognizer::ConsumeEventHint; |
| } |
| return QGestureRecognizer::Ignore; |
| } |
| |
| void MousePanGestureRecognizer::reset(QGesture *state) |
| { |
| QPanGesture *g = static_cast<QPanGesture *>(state); |
| g->setLastOffset(QPointF()); |
| g->setOffset(QPointF()); |
| g->setAcceleration(0); |
| g->setProperty("startPos", QVariant()); |
| g->setProperty("pressed", QVariant::fromValue<bool>(false)); |
| QGestureRecognizer::reset(state); |
| } |