1/****************************************************************************
2**
3** Copyright (C) 2015 Klaralvdalens Datakonsult AB (KDAB).
4** Contact: https://www.qt.io/licensing/
5**
6** This file is part of the Qt3D module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:LGPL$
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 https://www.qt.io/terms-conditions. For further
15** information use the contact form at https://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.LGPL3 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-3.0.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 (at your option) the GNU General
28** Public license version 3 or any later version approved by the KDE Free
29** Qt Foundation. The licenses are as published by the Free Software
30** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
31** included in the packaging of this file. Please review the following
32** information to ensure the GNU General Public License requirements will
33** be met: https://www.gnu.org/licenses/gpl-2.0.html and
34** https://www.gnu.org/licenses/gpl-3.0.html.
35**
36** $QT_END_LICENSE$
37**
38****************************************************************************/
39
40#include "inputsequence_p.h"
41
42#include <Qt3DInput/qabstractphysicaldevice.h>
43#include <Qt3DInput/qinputsequence.h>
44#include <QtCore/QDateTime>
45
46#include <Qt3DInput/private/inputhandler_p.h>
47#include <Qt3DInput/private/qinputsequence_p.h>
48
49QT_BEGIN_NAMESPACE
50
51namespace Qt3DInput {
52
53namespace Input {
54
55InputSequence::InputSequence()
56 : AbstractActionInput()
57 , m_sequences()
58 , m_inputsToTrigger()
59 , m_timeout(0)
60 , m_buttonInterval(0)
61 , m_startTime(0)
62 , m_lastInputTime(0)
63{
64}
65
66void InputSequence::cleanup()
67{
68 setEnabled(false);
69 m_timeout = 0;
70 m_buttonInterval = 0;
71 m_startTime = 0;
72 m_lastInputTime = 0;
73 m_lastInputId = Qt3DCore::QNodeId();
74 m_sequences.clear();
75 m_inputsToTrigger.clear();
76}
77
78void InputSequence::setStartTime(qint64 time)
79{
80 m_startTime = time;
81}
82
83void InputSequence::reset()
84{
85 m_startTime = 0;
86 m_lastInputTime = 0;
87 m_inputsToTrigger = m_sequences;
88 m_lastInputId = Qt3DCore::QNodeId();
89}
90
91bool InputSequence::actionTriggered(Qt3DCore::QNodeId input, const qint64 currentTime)
92{
93 if (input != m_inputsToTrigger.first())
94 return false;
95
96 // Save the last input
97 m_lastInputId = input;
98 // Return false if we've spent too much time in between two sequences
99 if ((m_lastInputTime != 0) && ((currentTime - m_lastInputTime) > m_buttonInterval)) {
100 reset();
101 return false;
102 }
103
104 // Update lastInputTime and remove the inputs to trigger from the sequence
105 m_lastInputTime = currentTime;
106 m_inputsToTrigger.removeOne(t: input);
107
108 // If we have no more remaining inputs in the sequences of inputs
109 if (m_inputsToTrigger.isEmpty()) {
110 // All Triggered
111 reset();
112 return true;
113 }
114 return false;
115}
116
117void InputSequence::syncFromFrontEnd(const Qt3DCore::QNode *frontEnd, bool firstTime)
118{
119 AbstractActionInput::syncFromFrontEnd(frontEnd, firstTime);
120 const QInputSequence *node = qobject_cast<const QInputSequence *>(object: frontEnd);
121 if (!node)
122 return;
123
124 m_timeout = milliToNano(milli: node->timeout());
125 m_buttonInterval = milliToNano(milli: node->buttonInterval());
126 m_sequences = Qt3DCore::qIdsForNodes(nodes: node->sequences());
127 m_inputsToTrigger = m_sequences;
128}
129
130bool InputSequence::process(InputHandler *inputHandler, qint64 currentTime)
131{
132 if (!isEnabled())
133 return false;
134
135 if (m_startTime != 0) {
136 // Check if we are still inside the time limit for the sequence
137 if ((currentTime - m_startTime) > m_timeout) {
138 reset();
139 return false;
140 }
141 }
142
143 bool triggered = false;
144 for (const Qt3DCore::QNodeId &actionInputId : qAsConst(t&: m_sequences)) {
145 AbstractActionInput *actionInput = inputHandler->lookupActionInput(id: actionInputId);
146 if (actionInput && actionInput->process(inputHandler, currentTime)) {
147 triggered |= actionTriggered(input: actionInputId, currentTime);
148 if (m_startTime == 0)
149 m_startTime = currentTime;
150 }
151 }
152 return triggered;
153}
154
155} // namespace Input
156
157} // namespace Qt3DInput
158
159QT_END_NAMESPACE
160
161

source code of qt3d/src/input/backend/inputsequence.cpp