GCC Code Coverage Report

Line	Branch	Exec	Source
1			/*****************************************************************************
2			*
3			* Copyright (C) 2009-2025 Florian Pose <fp@igh.de>
4			*
5			* This file is part of the QtPdCom library.
6			*
7			* The QtPdCom library is free software: you can redistribute it and/or modify
8			* it under the terms of the GNU Lesser General Public License as published by
9			* the Free Software Foundation, either version 3 of the License, or (at your
10			* option) any later version.
11			*
12			* The QtPdCom library is distributed in the hope that it will be useful, but
13			* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14			* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
15			* License for more details.
16			*
17			* You should have received a copy of the GNU Lesser General Public License
18			* along with the QtPdCom Library. If not, see <http://www.gnu.org/licenses/>.
19			*
20			****************************************************************************/
21
22			#ifndef QTPDCOM_SCALARVARIABLE_H
23			#define QTPDCOM_SCALARVARIABLE_H
24
25			#include "ScalarSubscriber.h"
26			#include "Export.h"
27
28			#include <QObject>
29
30			namespace QtPdCom {
31
32			/****************************************************************************/
33
34			/** Abstract Scalar Value.
35			*/
36		24	class QTPDCOM_PUBLIC AbstractScalarVariable:
37			public QObject,
38			public ScalarSubscriber
39			{
40			Q_OBJECT
41
42			public:
43	1/2 ✓ Branch 2 taken 24 times. ✗ Branch 3 not taken.	24	using QObject::QObject;
44
45			struct Exception
46			{
47			/** Constructor.
48			*/
49			Exception(const QString &msg):
50			msg(msg)
51			{}
52			QString msg; /*< Exception message. /
53			};
54
55			template <typename T>
56			typename std::enable_if<std::is_arithmetic<T>::value, void>::type
57		7	copyData(T &dest) const
58			{
59	2/4 ✓ Branch 2 taken 7 times. ✗ Branch 3 not taken. ✓ Branch 5 taken 7 times. ✗ Branch 6 not taken.	21	PdCom::details::copyData(
60			&dest,
61		7	PdCom::details::TypeInfoTraits<T>::type_info.type,
62			getData(),
63		14	getVariable().getTypeInfo().type,
64			1);
65		7	}
66
67			signals:
68			void valueChanged(); /**< Emitted, when the value changes, or the
69			variable is disconnected. */
70			};
71
72			/****************************************************************************/
73
74			/** Scalar Value Template.
75			*/
76			template <class T> class ScalarVariable: public AbstractScalarVariable
77			{
78			public:
79			ScalarVariable(QObject *parent = nullptr);
80			virtual ~ScalarVariable();
81
82			void clearData();
83			bool hasData() const;
84
85			T getValue() const;
86			std::chrono::nanoseconds getMTime() const;
87			void inc();
88
89			private:
90			T value; /*< Current value. /
91			/** Modification Time of Current value. */
92			std::chrono::nanoseconds mTime;
93			bool dataPresent; /*< There is a process value to display. /
94
95			// pure-virtual from ScalarSubscriber
96			void newValues(std::chrono::nanoseconds) override;
97			};
98
99			/****************************************************************************/
100
101			typedef ScalarVariable<bool> BoolVariable;
102			typedef ScalarVariable<int> IntVariable;
103			typedef ScalarVariable<double> DoubleVariable;
104
105			/****************************************************************************/
106
107			/** Constructor.
108			*/
109		24	template <class T> ScalarVariable<T>::ScalarVariable(QObject *parent):
110			AbstractScalarVariable(parent),
111			value((T) 0),
112		24	dataPresent(false)
113		24	{}
114
115			/****************************************************************************/
116
117			/** Destructor.
118			*/
119		24	template <class T> ScalarVariable<T>::~ScalarVariable()
120		24	{}
121
122			/****************************************************************************/
123
124			template <class T> void ScalarVariable<T>::clearData()
125			{
126			value = ((T) 0);
127			dataPresent = false;
128			emit valueChanged();
129			}
130
131			/****************************************************************************/
132
133			/**
134			* \return \a true, if data are present.
135			*/
136		7	template <class T> inline bool ScalarVariable<T>::hasData() const
137			{
138		7	return dataPresent;
139			}
140
141			/****************************************************************************/
142
143			/**
144			* \return The current #value.
145			*/
146		7	template <class T> inline T ScalarVariable<T>::getValue() const
147			{
148		7	return value;
149			}
150
151			/****************************************************************************/
152
153			/**
154			* \return The current Modification Time.
155			*/
156			template <class T>
157			inline std::chrono::nanoseconds ScalarVariable<T>::getMTime() const
158			{
159			return mTime;
160			}
161
162			/****************************************************************************/
163
164			/** Increments the current #value and writes it to the process.
165			*
166			* This does \a not update #value directly.
167			*/
168			template <class T> void ScalarVariable<T>::inc()
169			{
170			writeValue(value + 1);
171			}
172
173			/****************************************************************************/
174
175			/** This virtual method is called if the process variable's value changed.
176			*/
177			template <class T>
178		7	void ScalarVariable<T>::newValues(std::chrono::nanoseconds ts)
179			{
180		7	T newValue;
181
182	1/2 ✓ Branch 1 taken 7 times. ✗ Branch 2 not taken.	7	copyData(newValue);
183		7	newValue = newValue * scale + offset;
184		7	mTime = std::chrono::nanoseconds(ts);
185
186	1/4 ✗ Branch 0 not taken. ✓ Branch 1 taken 7 times. ✗ Branch 2 not taken. ✗ Branch 3 not taken.	7	if (newValue != value \|\| !dataPresent) {
187		7	value = newValue;
188		7	dataPresent = true;
189	1/2 ✓ Branch 1 taken 7 times. ✗ Branch 2 not taken.	7	emit valueChanged();
190			}
191		7	}
192
193			/****************************************************************************/
194
195			} // namespace QtPdCom
196
197			#endif
198