1/****************************************************************************
2**
3** Copyright (C) 2018 The Qt Company Ltd.
4** Contact: http://www.qt.io/licensing/
5**
6** This file is part of the QtLocation module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:LGPL3$
9** Commercial License Usage
10** Licensees holding valid commercial Qt licenses may use this file in
11** accordance with the commercial license agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and The Qt Company. For licensing terms
14** and conditions see http://www.qt.io/terms-conditions. For further
15** information use the contact form at http://www.qt.io/contact-us.
16**
17** GNU Lesser General Public License Usage
18** Alternatively, this file may be used under the terms of the GNU Lesser
19** General Public License version 3 as published by the Free Software
20** Foundation and appearing in the file LICENSE.LGPLv3 included in the
21** packaging of this file. Please review the following information to
22** ensure the GNU Lesser General Public License version 3 requirements
23** will be met: https://www.gnu.org/licenses/lgpl.html.
24**
25** GNU General Public License Usage
26** Alternatively, this file may be used under the terms of the GNU
27** General Public License version 2.0 or later as published by the Free
28** Software Foundation and appearing in the file LICENSE.GPL included in
29** the packaging of this file. Please review the following information to
30** ensure the GNU General Public License version 2.0 requirements will be
31** met: http://www.gnu.org/licenses/gpl-2.0.html.
32**
33** $QT_END_LICENSE$
34**
35****************************************************************************/
36
37#ifndef QDECLARATIVEGEOMAPITEMTRANSITIONMANAGER_H
38#define QDECLARATIVEGEOMAPITEMTRANSITIONMANAGER_H
39
40//
41// W A R N I N G
42// -------------
43//
44// This file is not part of the Qt API. It exists purely as an
45// implementation detail. This header file may change from version to
46// version without notice, or even be removed.
47//
48// We mean it.
49//
50
51#include <QtLocation/private/qlocationglobal_p.h>
52#include <QtQuick/QQuickItem>
53#include <QtQuick/private/qquicktransitionmanager_p_p.h>
54
55QT_BEGIN_NAMESPACE
56
57class QDeclarativeGeoMapItemView;
58
59class QDeclarativeGeoMapItemTransitionManager : public QQuickTransitionManager
60{
61public:
62 enum TransitionState {
63 NoTransition, EnterTransition, ExitTransition
64 };
65
66 QDeclarativeGeoMapItemTransitionManager(QObject *mapItem);
67
68 void transitionEnter();
69 void transitionExit();
70
71 bool prepareEnterTransition()
72 {
73 if (m_transitionState == QDeclarativeGeoMapItemTransitionManager::EnterTransition
74 && isRunning())
75 return false;
76
77 if (m_transitionState != QDeclarativeGeoMapItemTransitionManager::EnterTransition) {
78 // setVisible(true);
79 m_transitionState = QDeclarativeGeoMapItemTransitionManager::EnterTransition;
80 }
81 return true;
82 }
83 bool prepareExitTransition()
84 {
85 if (m_transitionState == QDeclarativeGeoMapItemTransitionManager::ExitTransition
86 && isRunning())
87 return false;
88
89 if (m_transitionState != QDeclarativeGeoMapItemTransitionManager::ExitTransition) {
90 m_transitionState = QDeclarativeGeoMapItemTransitionManager::ExitTransition;
91 }
92 return true;
93 }
94 void finalizeEnterTransition()
95 {
96 m_transitionState = QDeclarativeGeoMapItemTransitionManager::NoTransition;
97 // use invokeMethod since this is used on both QDeclarativeGeoMapItemBase and QDeclarativeGeoMapItemGroup
98 QMetaObject::invokeMethod(obj: m_mapItem, QByteArrayLiteral("addTransitionFinished").constData(), type: Qt::DirectConnection);
99 }
100 void finalizeExitTransition()
101 {
102// setVisible(false);
103 m_transitionState = QDeclarativeGeoMapItemTransitionManager::NoTransition;
104 QMetaObject::invokeMethod(obj: m_mapItem, QByteArrayLiteral("removeTransitionFinished").constData(), type: Qt::DirectConnection);
105 }
106
107protected:
108 void finished() override;
109
110public:
111 QObject *m_mapItem;
112 QDeclarativeGeoMapItemView *m_view = nullptr;
113 QList<QQuickStateAction> enterActions;
114 QList<QQuickStateAction> exitActions;
115 TransitionState m_transitionState = NoTransition;
116};
117
118QT_END_NAMESPACE
119
120#endif
121

source code of qtlocation/src/location/declarativemaps/qdeclarativegeomapitemtransitionmanager_p.h