48e0c4df23
Change-Id: Ic804938fc352291d011800d21e549c10acac66fb Reviewed-by: Lars Knoll <lars.knoll@digia.com>
108 lines
4.4 KiB
C++
108 lines
4.4 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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**
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** This file is part of the test suite of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia. For licensing terms and
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** conditions see http://qt.digia.com/licensing. For further information
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** use the contact form at http://qt.digia.com/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Digia gives you certain additional
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** rights. These rights are described in the Digia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "mousepangesturerecognizer.h"
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#include <QEvent>
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#include <QVariant>
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#include <QGraphicsSceneMouseEvent>
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#include <QMouseEvent>
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#include <QGesture>
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MousePanGestureRecognizer::MousePanGestureRecognizer()
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{
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}
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QGesture* MousePanGestureRecognizer::create(QObject *)
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{
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return new QPanGesture;
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}
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QGestureRecognizer::Result MousePanGestureRecognizer::recognize(QGesture *state, QObject *, QEvent *event)
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{
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QPanGesture *g = static_cast<QPanGesture *>(state);
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QPoint globalPos;
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switch (event->type()) {
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case QEvent::GraphicsSceneMousePress:
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case QEvent::GraphicsSceneMouseDoubleClick:
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case QEvent::GraphicsSceneMouseMove:
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case QEvent::GraphicsSceneMouseRelease:
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globalPos = static_cast<QGraphicsSceneMouseEvent *>(event)->screenPos();
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break;
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case QEvent::MouseButtonPress:
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case QEvent::MouseMove:
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case QEvent::MouseButtonRelease:
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globalPos = static_cast<QMouseEvent *>(event)->globalPos();
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break;
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default:
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break;
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}
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if (event->type() == QEvent::MouseButtonPress || event->type() == QEvent::MouseButtonDblClick
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|| event->type() == QEvent::GraphicsSceneMousePress || event->type() == QEvent::GraphicsSceneMouseDoubleClick) {
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g->setHotSpot(globalPos);
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g->setProperty("startPos", globalPos);
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g->setProperty("pressed", QVariant::fromValue<bool>(true));
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return QGestureRecognizer::TriggerGesture | QGestureRecognizer::ConsumeEventHint;
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} else if (event->type() == QEvent::MouseMove || event->type() == QEvent::GraphicsSceneMouseMove) {
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if (g->property("pressed").toBool()) {
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QPoint offset = globalPos - g->property("startPos").toPoint();
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g->setLastOffset(g->offset());
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g->setOffset(QPointF(offset.x(), offset.y()));
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return QGestureRecognizer::TriggerGesture | QGestureRecognizer::ConsumeEventHint;
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}
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return QGestureRecognizer::CancelGesture;
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} else if (event->type() == QEvent::MouseButtonRelease || event->type() == QEvent::GraphicsSceneMouseRelease) {
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return QGestureRecognizer::FinishGesture | QGestureRecognizer::ConsumeEventHint;
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}
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return QGestureRecognizer::Ignore;
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}
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void MousePanGestureRecognizer::reset(QGesture *state)
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{
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QPanGesture *g = static_cast<QPanGesture *>(state);
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g->setLastOffset(QPointF());
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g->setOffset(QPointF());
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g->setAcceleration(0);
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g->setProperty("startPos", QVariant());
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g->setProperty("pressed", QVariant::fromValue<bool>(false));
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QGestureRecognizer::reset(state);
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}
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