update SingleApplication

pull/610/head
Nicolas Werner 3 years ago
parent 12ce7686ce
commit 6a7d28d1b5
No known key found for this signature in database
GPG Key ID: C8D75E610773F2D9
  1. 2
      CMakeLists.txt
  2. 1
      third_party/SingleApplication-3.3.0/.github/FUNDING.yml
  3. 56
      third_party/SingleApplication-3.3.0/.github/workflows/build-cmake.yml
  4. 0
      third_party/SingleApplication-3.3.0/.gitignore
  5. 6
      third_party/SingleApplication-3.3.0/CHANGELOG.md
  6. 0
      third_party/SingleApplication-3.3.0/CMakeLists.txt
  7. 0
      third_party/SingleApplication-3.3.0/LICENSE
  8. 0
      third_party/SingleApplication-3.3.0/README.md
  9. 0
      third_party/SingleApplication-3.3.0/SingleApplication
  10. 0
      third_party/SingleApplication-3.3.0/Windows.md
  11. 12
      third_party/SingleApplication-3.3.0/examples/basic/CMakeLists.txt
  12. 5
      third_party/SingleApplication-3.3.0/examples/basic/basic.pro
  13. 10
      third_party/SingleApplication-3.3.0/examples/basic/main.cpp
  14. 21
      third_party/SingleApplication-3.3.0/examples/calculator/CMakeLists.txt
  15. 73
      third_party/SingleApplication-3.3.0/examples/calculator/button.cpp
  16. 68
      third_party/SingleApplication-3.3.0/examples/calculator/button.h
  17. 406
      third_party/SingleApplication-3.3.0/examples/calculator/calculator.cpp
  18. 117
      third_party/SingleApplication-3.3.0/examples/calculator/calculator.h
  19. 11
      third_party/SingleApplication-3.3.0/examples/calculator/calculator.pro
  20. 71
      third_party/SingleApplication-3.3.0/examples/calculator/main.cpp
  21. 20
      third_party/SingleApplication-3.3.0/examples/sending_arguments/CMakeLists.txt
  22. 28
      third_party/SingleApplication-3.3.0/examples/sending_arguments/main.cpp
  23. 12
      third_party/SingleApplication-3.3.0/examples/sending_arguments/messagereceiver.cpp
  24. 15
      third_party/SingleApplication-3.3.0/examples/sending_arguments/messagereceiver.h
  25. 9
      third_party/SingleApplication-3.3.0/examples/sending_arguments/sending_arguments.pro
  26. 33
      third_party/SingleApplication-3.3.0/singleapplication.cpp
  27. 16
      third_party/SingleApplication-3.3.0/singleapplication.h
  28. 0
      third_party/SingleApplication-3.3.0/singleapplication.pri
  29. 110
      third_party/SingleApplication-3.3.0/singleapplication_p.cpp
  30. 13
      third_party/SingleApplication-3.3.0/singleapplication_p.h

@ -458,7 +458,7 @@ endif()
# single instance functionality
set(QAPPLICATION_CLASS QApplication CACHE STRING "Inheritance class for SingleApplication")
add_subdirectory(third_party/SingleApplication-3.2.0-dc8042b/)
add_subdirectory(third_party/SingleApplication-3.3.0/)
feature_summary(WHAT ALL INCLUDE_QUIET_PACKAGES FATAL_ON_MISSING_REQUIRED_PACKAGES)

@ -0,0 +1,56 @@
name: "CI: Build Test"
on: [push, pull_request]
jobs:
build:
strategy:
matrix:
qt_version: [5.12.6, 5.13.2, 5.14.0, 5.15.0, 6.0.0]
platform: [ubuntu-20.04, windows-latest, macos-latest]
include:
- qt_version: 6.0.0
additional_arguments: -D QT_DEFAULT_MAJOR_VERSION=6
- platform: ubuntu-20.04
CXXFLAGS: -Wall -Wextra -pedantic -Werror
- platform: macos-latest
CXXFLAGS: -Wall -Wextra -pedantic -Werror
- platform: windows-latest
CXXFLAGS: /W4 /WX
runs-on: ${{ matrix.platform }}
env:
CXXFLAGS: ${{ matrix.CXXFLAGS }}
steps:
- uses: actions/checkout@v2.3.4
- name: Install Qt
uses: jurplel/install-qt-action@v2.11.1
with:
version: ${{ matrix.qt_version }}
- name: cmake
run: cmake . ${{ matrix.additional_arguments }}
- name: cmake build
run: cmake --build .
- name: Build example - basic (cmake)
working-directory: examples/basic/
run: |
cmake . ${{ matrix.additional_arguments }}
cmake --build .
- name: Build example - calculator (cmake)
working-directory: examples/calculator/
run: |
cmake . ${{ matrix.additional_arguments }}
cmake --build .
- name: Build example - sending_arguments (cmake)
working-directory: examples/sending_arguments/
run: |
cmake . ${{ matrix.additional_arguments }}
cmake --build .

@ -3,6 +3,12 @@ Changelog
If by accident I have forgotten to credit someone in the CHANGELOG, email me and I will fix it.
__3.3.0__
---------
* Fixed message fragmentation issue causing crashes and incorrectly and inconsistently received messages. - _Nils Jeisecke_
__3.2.0__
---------

@ -0,0 +1,12 @@
cmake_minimum_required(VERSION 3.7.0)
project(basic LANGUAGES CXX)
# SingleApplication base class
set(QAPPLICATION_CLASS QCoreApplication)
add_subdirectory(../.. SingleApplication)
add_executable(basic main.cpp)
target_link_libraries(${PROJECT_NAME} SingleApplication::SingleApplication)

@ -0,0 +1,5 @@
# Single Application implementation
include(../../singleapplication.pri)
DEFINES += QAPPLICATION_CLASS=QCoreApplication
SOURCES += main.cpp

@ -0,0 +1,10 @@
#include <singleapplication.h>
int main(int argc, char *argv[])
{
SingleApplication app( argc, argv );
qWarning() << "Started a new instance";
return app.exec();
}

@ -0,0 +1,21 @@
cmake_minimum_required(VERSION 3.7.0)
project(calculator LANGUAGES CXX)
set(CMAKE_AUTOMOC ON)
# SingleApplication base class
set(QAPPLICATION_CLASS QApplication)
add_subdirectory(../.. SingleApplication)
find_package(Qt${QT_DEFAULT_MAJOR_VERSION} COMPONENTS Core REQUIRED)
add_executable(${PROJECT_NAME}
button.h
calculator.h
button.cpp
calculator.cpp
main.cpp
)
target_link_libraries(${PROJECT_NAME} SingleApplication::SingleApplication)

@ -0,0 +1,73 @@
/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** 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
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of The Qt Company Ltd nor the names of its
** contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtWidgets>
#include "button.h"
//! [0]
Button::Button(const QString &text, QWidget *parent)
: QToolButton(parent)
{
setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
setText(text);
}
//! [0]
//! [1]
QSize Button::sizeHint() const
//! [1] //! [2]
{
QSize size = QToolButton::sizeHint();
size.rheight() += 20;
size.rwidth() = qMax(size.width(), size.height());
return size;
}
//! [2]

@ -0,0 +1,68 @@
/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** 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
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of The Qt Company Ltd nor the names of its
** contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef BUTTON_H
#define BUTTON_H
#include <QToolButton>
//! [0]
class Button : public QToolButton
{
Q_OBJECT
public:
explicit Button(const QString &text, QWidget *parent = 0);
QSize sizeHint() const Q_DECL_OVERRIDE;
};
//! [0]
#endif

@ -0,0 +1,406 @@
/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** 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
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of The Qt Company Ltd nor the names of its
** contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtWidgets>
#include <cmath>
#include "button.h"
#include "calculator.h"
//! [0]
Calculator::Calculator(QWidget *parent)
: QWidget(parent)
{
sumInMemory = 0.0;
sumSoFar = 0.0;
factorSoFar = 0.0;
waitingForOperand = true;
//! [0]
//! [1]
display = new QLineEdit("0");
//! [1] //! [2]
display->setReadOnly(true);
display->setAlignment(Qt::AlignRight);
display->setMaxLength(15);
QFont font = display->font();
font.setPointSize(font.pointSize() + 8);
display->setFont(font);
//! [2]
//! [4]
for (int i = 0; i < NumDigitButtons; ++i) {
digitButtons[i] = createButton(QString::number(i), SLOT(digitClicked()));
}
Button *pointButton = createButton(".", SLOT(pointClicked()));
Button *changeSignButton = createButton("\302\261", SLOT(changeSignClicked()));
Button *backspaceButton = createButton("Backspace", SLOT(backspaceClicked()));
Button *clearButton = createButton("Clear", SLOT(clear()));
Button *clearAllButton = createButton("Clear All", SLOT(clearAll()));
Button *clearMemoryButton = createButton("MC", SLOT(clearMemory()));
Button *readMemoryButton = createButton("MR", SLOT(readMemory()));
Button *setMemoryButton = createButton("MS", SLOT(setMemory()));
Button *addToMemoryButton = createButton("M+", SLOT(addToMemory()));
Button *divisionButton = createButton("\303\267", SLOT(multiplicativeOperatorClicked()));
Button *timesButton = createButton("\303\227", SLOT(multiplicativeOperatorClicked()));
Button *minusButton = createButton("-", SLOT(additiveOperatorClicked()));
Button *plusButton = createButton("+", SLOT(additiveOperatorClicked()));
Button *squareRootButton = createButton("Sqrt", SLOT(unaryOperatorClicked()));
Button *powerButton = createButton("x\302\262", SLOT(unaryOperatorClicked()));
Button *reciprocalButton = createButton("1/x", SLOT(unaryOperatorClicked()));
Button *equalButton = createButton("=", SLOT(equalClicked()));
//! [4]
//! [5]
QGridLayout *mainLayout = new QGridLayout;
//! [5] //! [6]
mainLayout->setSizeConstraint(QLayout::SetFixedSize);
mainLayout->addWidget(display, 0, 0, 1, 6);
mainLayout->addWidget(backspaceButton, 1, 0, 1, 2);
mainLayout->addWidget(clearButton, 1, 2, 1, 2);
mainLayout->addWidget(clearAllButton, 1, 4, 1, 2);
mainLayout->addWidget(clearMemoryButton, 2, 0);
mainLayout->addWidget(readMemoryButton, 3, 0);
mainLayout->addWidget(setMemoryButton, 4, 0);
mainLayout->addWidget(addToMemoryButton, 5, 0);
for (int i = 1; i < NumDigitButtons; ++i) {
int row = ((9 - i) / 3) + 2;
int column = ((i - 1) % 3) + 1;
mainLayout->addWidget(digitButtons[i], row, column);
}
mainLayout->addWidget(digitButtons[0], 5, 1);
mainLayout->addWidget(pointButton, 5, 2);
mainLayout->addWidget(changeSignButton, 5, 3);
mainLayout->addWidget(divisionButton, 2, 4);
mainLayout->addWidget(timesButton, 3, 4);
mainLayout->addWidget(minusButton, 4, 4);
mainLayout->addWidget(plusButton, 5, 4);
mainLayout->addWidget(squareRootButton, 2, 5);
mainLayout->addWidget(powerButton, 3, 5);
mainLayout->addWidget(reciprocalButton, 4, 5);
mainLayout->addWidget(equalButton, 5, 5);
setLayout(mainLayout);
setWindowTitle("Calculator");
}
//! [6]
//! [7]
void Calculator::digitClicked()
{
Button *clickedButton = qobject_cast<Button *>(sender());
int digitValue = clickedButton->text().toInt();
if (display->text() == "0" && digitValue == 0.0)
return;
if (waitingForOperand) {
display->clear();
waitingForOperand = false;
}
display->setText(display->text() + QString::number(digitValue));
}
//! [7]
//! [8]
void Calculator::unaryOperatorClicked()
//! [8] //! [9]
{
Button *clickedButton = qobject_cast<Button *>(sender());
QString clickedOperator = clickedButton->text();
double operand = display->text().toDouble();
double result = 0.0;
if (clickedOperator == "Sqrt") {
if (operand < 0.0) {
abortOperation();
return;
}
result = std::sqrt(operand);
} else if (clickedOperator == "x\302\262") {
result = std::pow(operand, 2.0);
} else if (clickedOperator == "1/x") {
if (operand == 0.0) {
abortOperation();
return;
}
result = 1.0 / operand;
}
display->setText(QString::number(result));
waitingForOperand = true;
}
//! [9]
//! [10]
void Calculator::additiveOperatorClicked()
//! [10] //! [11]
{
Button *clickedButton = qobject_cast<Button *>(sender());
QString clickedOperator = clickedButton->text();
double operand = display->text().toDouble();
//! [11] //! [12]
if (!pendingMultiplicativeOperator.isEmpty()) {
//! [12] //! [13]
if (!calculate(operand, pendingMultiplicativeOperator)) {
abortOperation();
return;
}
display->setText(QString::number(factorSoFar));
operand = factorSoFar;
factorSoFar = 0.0;
pendingMultiplicativeOperator.clear();
}
//! [13] //! [14]
if (!pendingAdditiveOperator.isEmpty()) {
//! [14] //! [15]
if (!calculate(operand, pendingAdditiveOperator)) {
abortOperation();
return;
}
display->setText(QString::number(sumSoFar));
} else {
sumSoFar = operand;
}
//! [15] //! [16]
pendingAdditiveOperator = clickedOperator;
//! [16] //! [17]
waitingForOperand = true;
}
//! [17]
//! [18]
void Calculator::multiplicativeOperatorClicked()
{
Button *clickedButton = qobject_cast<Button *>(sender());
QString clickedOperator = clickedButton->text();
double operand = display->text().toDouble();
if (!pendingMultiplicativeOperator.isEmpty()) {
if (!calculate(operand, pendingMultiplicativeOperator)) {
abortOperation();
return;
}
display->setText(QString::number(factorSoFar));
} else {
factorSoFar = operand;
}
pendingMultiplicativeOperator = clickedOperator;
waitingForOperand = true;
}
//! [18]
//! [20]
void Calculator::equalClicked()
{
double operand = display->text().toDouble();
if (!pendingMultiplicativeOperator.isEmpty()) {
if (!calculate(operand, pendingMultiplicativeOperator)) {
abortOperation();
return;
}
operand = factorSoFar;
factorSoFar = 0.0;
pendingMultiplicativeOperator.clear();
}
if (!pendingAdditiveOperator.isEmpty()) {
if (!calculate(operand, pendingAdditiveOperator)) {
abortOperation();
return;
}
pendingAdditiveOperator.clear();
} else {
sumSoFar = operand;
}
display->setText(QString::number(sumSoFar));
sumSoFar = 0.0;
waitingForOperand = true;
}
//! [20]
//! [22]
void Calculator::pointClicked()
{
if (waitingForOperand)
display->setText("0");
if (!display->text().contains('.'))
display->setText(display->text() + ".");
waitingForOperand = false;
}
//! [22]
//! [24]
void Calculator::changeSignClicked()
{
QString text = display->text();
double value = text.toDouble();
if (value > 0.0) {
text.prepend("-");
} else if (value < 0.0) {
text.remove(0, 1);
}
display->setText(text);
}
//! [24]
//! [26]
void Calculator::backspaceClicked()
{
if (waitingForOperand)
return;
QString text = display->text();
text.chop(1);
if (text.isEmpty()) {
text = "0";
waitingForOperand = true;
}
display->setText(text);
}
//! [26]
//! [28]
void Calculator::clear()
{
if (waitingForOperand)
return;
display->setText("0");
waitingForOperand = true;
}
//! [28]
//! [30]
void Calculator::clearAll()
{
sumSoFar = 0.0;
factorSoFar = 0.0;
pendingAdditiveOperator.clear();
pendingMultiplicativeOperator.clear();
display->setText("0");
waitingForOperand = true;
}
//! [30]
//! [32]
void Calculator::clearMemory()
{
sumInMemory = 0.0;
}
void Calculator::readMemory()
{
display->setText(QString::number(sumInMemory));
waitingForOperand = true;
}
void Calculator::setMemory()
{
equalClicked();
sumInMemory = display->text().toDouble();
}
void Calculator::addToMemory()
{
equalClicked();
sumInMemory += display->text().toDouble();
}
//! [32]
//! [34]
Button *Calculator::createButton(const QString &text, const char *member)
{
Button *button = new Button(text);
connect(button, SIGNAL(clicked()), this, member);
return button;
}
//! [34]
//! [36]
void Calculator::abortOperation()
{
clearAll();
display->setText("####");
}
//! [36]
//! [38]
bool Calculator::calculate(double rightOperand, const QString &pendingOperator)
{
if (pendingOperator == "+") {
sumSoFar += rightOperand;
} else if (pendingOperator == "-") {
sumSoFar -= rightOperand;
} else if (pendingOperator == "\303\227") {
factorSoFar *= rightOperand;
} else if (pendingOperator == "\303\267") {
if (rightOperand == 0.0)
return false;
factorSoFar /= rightOperand;
}
return true;
}
//! [38]

@ -0,0 +1,117 @@
/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** 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
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of The Qt Company Ltd nor the names of its
** contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef CALCULATOR_H
#define CALCULATOR_H
#include <QWidget>
QT_BEGIN_NAMESPACE
class QLineEdit;
QT_END_NAMESPACE
class Button;
//! [0]
class Calculator : public QWidget
{
Q_OBJECT
public:
Calculator(QWidget *parent = 0);
private slots:
void digitClicked();
void unaryOperatorClicked();
void additiveOperatorClicked();
void multiplicativeOperatorClicked();
void equalClicked();
void pointClicked();
void changeSignClicked();
void backspaceClicked();
void clear();
void clearAll();
void clearMemory();
void readMemory();
void setMemory();
void addToMemory();
//! [0]
//! [1]
private:
//! [1] //! [2]
Button *createButton(const QString &text, const char *member);
void abortOperation();
bool calculate(double rightOperand, const QString &pendingOperator);
//! [2]
//! [3]
double sumInMemory;
//! [3] //! [4]
double sumSoFar;
//! [4] //! [5]
double factorSoFar;
//! [5] //! [6]
QString pendingAdditiveOperator;
//! [6] //! [7]
QString pendingMultiplicativeOperator;
//! [7] //! [8]
bool waitingForOperand;
//! [8]
//! [9]
QLineEdit *display;
//! [9] //! [10]
enum { NumDigitButtons = 10 };
Button *digitButtons[NumDigitButtons];
};
//! [10]
#endif

@ -0,0 +1,11 @@
QT += widgets
HEADERS = button.h \
calculator.h
SOURCES = button.cpp \
calculator.cpp \
main.cpp
# Single Application implementation
include(../../singleapplication.pri)
DEFINES += QAPPLICATION_CLASS=QApplication

@ -0,0 +1,71 @@
/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** 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
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of The Qt Company Ltd nor the names of its
** contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QApplication>
#include <singleapplication.h>
#include "calculator.h"
int main(int argc, char *argv[])
{
SingleApplication app(argc, argv);
Calculator calc;
QObject::connect( &app, &SingleApplication::instanceStarted, [ &calc ]() {
calc.raise();
calc.activateWindow();
});
calc.show();
return app.exec();
}

@ -0,0 +1,20 @@
cmake_minimum_required(VERSION 3.7.0)
project(sending_arguments LANGUAGES CXX)
set(CMAKE_AUTOMOC ON)
# SingleApplication base class
set(QAPPLICATION_CLASS QCoreApplication)
add_subdirectory(../.. SingleApplication)
find_package(Qt${QT_DEFAULT_MAJOR_VERSION} COMPONENTS Core REQUIRED)
add_executable(${PROJECT_NAME}
main.cpp
messagereceiver.cpp
messagereceiver.h
main.cpp
)
target_link_libraries(${PROJECT_NAME} SingleApplication::SingleApplication)

@ -0,0 +1,28 @@
#include <singleapplication.h>
#include "messagereceiver.h"
int main(int argc, char *argv[])
{
// Allow secondary instances
SingleApplication app( argc, argv, true );
MessageReceiver msgReceiver;
// If this is a secondary instance
if( app.isSecondary() ) {
app.sendMessage( app.arguments().join(' ').toUtf8() );
qDebug() << "App already running.";
qDebug() << "Primary instance PID: " << app.primaryPid();
qDebug() << "Primary instance user: " << app.primaryUser();
return 0;
} else {
QObject::connect(
&app,
&SingleApplication::receivedMessage,
&msgReceiver,
&MessageReceiver::receivedMessage
);
}
return app.exec();
}

@ -0,0 +1,12 @@
#include <QDebug>
#include "messagereceiver.h"
MessageReceiver::MessageReceiver(QObject *parent) : QObject(parent)
{
}
void MessageReceiver::receivedMessage(int instanceId, QByteArray message)
{
qDebug() << "Received message from instance: " << instanceId;
qDebug() << "Message Text: " << message;
}

@ -0,0 +1,15 @@
#ifndef MESSAGERECEIVER_H
#define MESSAGERECEIVER_H
#include <QObject>
class MessageReceiver : public QObject
{
Q_OBJECT
public:
explicit MessageReceiver(QObject *parent = 0);
public slots:
void receivedMessage( int instanceId, QByteArray message );
};
#endif // MESSAGERECEIVER_H

@ -0,0 +1,9 @@
# Single Application implementation
include(../../singleapplication.pri)
DEFINES += QAPPLICATION_CLASS=QCoreApplication
SOURCES += main.cpp \
messagereceiver.cpp
HEADERS += \
messagereceiver.h

@ -36,7 +36,7 @@
* @param options Optional flags to toggle specific behaviour
* @param timeout Maximum time blocking functions are allowed during app load
*/
SingleApplication::SingleApplication( int &argc, char *argv[], bool allowSecondary, Options options, int timeout, QString userData )
SingleApplication::SingleApplication( int &argc, char *argv[], bool allowSecondary, Options options, int timeout, const QString &userData )
: app_t( argc, argv ), d_ptr( new SingleApplicationPrivate( this ) )
{
Q_D( SingleApplication );
@ -172,9 +172,9 @@ SingleApplication::~SingleApplication()
* Checks if the current application instance is primary.
* @return Returns true if the instance is primary, false otherwise.
*/
bool SingleApplication::isPrimary()
bool SingleApplication::isPrimary() const
{
Q_D( SingleApplication );
Q_D( const SingleApplication );
return d->server != nullptr;
}
@ -182,9 +182,9 @@ bool SingleApplication::isPrimary()
* Checks if the current application instance is secondary.
* @return Returns true if the instance is secondary, false otherwise.
*/
bool SingleApplication::isSecondary()
bool SingleApplication::isSecondary() const
{
Q_D( SingleApplication );
Q_D( const SingleApplication );
return d->server == nullptr;
}
@ -194,9 +194,9 @@ bool SingleApplication::isSecondary()
* only incremented afterwards.
* @return Returns a unique instance id.
*/
quint32 SingleApplication::instanceId()
quint32 SingleApplication::instanceId() const
{
Q_D( SingleApplication );
Q_D( const SingleApplication );
return d->instanceNumber;
}
@ -206,9 +206,9 @@ quint32 SingleApplication::instanceId()
* specific APIs.
* @return Returns the primary instance PID.
*/
qint64 SingleApplication::primaryPid()
qint64 SingleApplication::primaryPid() const
{
Q_D( SingleApplication );
Q_D( const SingleApplication );
return d->primaryPid();
}
@ -216,9 +216,9 @@ qint64 SingleApplication::primaryPid()
* Returns the username the primary instance is running as.
* @return Returns the username the primary instance is running as.
*/
QString SingleApplication::primaryUser()
QString SingleApplication::primaryUser() const
{
Q_D( SingleApplication );
Q_D( const SingleApplication );
return d->primaryUser();
}
@ -226,7 +226,7 @@ QString SingleApplication::primaryUser()
* Returns the username the current instance is running as.
* @return Returns the username the current instance is running as.
*/
QString SingleApplication::currentUser()
QString SingleApplication::currentUser() const
{
return SingleApplicationPrivate::getUsername();
}
@ -248,10 +248,7 @@ bool SingleApplication::sendMessage( const QByteArray &message, int timeout )
if( ! d->connectToPrimary( timeout, SingleApplicationPrivate::Reconnect ) )
return false;
d->socket->write( message );
bool dataWritten = d->socket->waitForBytesWritten( timeout );
d->socket->flush();
return dataWritten;
return d->writeConfirmedMessage( timeout, message );
}
/**
@ -267,8 +264,8 @@ void SingleApplication::abortSafely()
::exit( EXIT_FAILURE );
}
QStringList SingleApplication::userData()
QStringList SingleApplication::userData() const
{
Q_D( SingleApplication );
Q_D( const SingleApplication );
return d->appData();
}

@ -85,44 +85,44 @@ public:
* Usually 4*timeout would be the worst case (fail) scenario.
* @see See the corresponding QAPPLICATION_CLASS constructor for reference
*/
explicit SingleApplication( int &argc, char *argv[], bool allowSecondary = false, Options options = Mode::User, int timeout = 1000, QString userData = QString() );
explicit SingleApplication( int &argc, char *argv[], bool allowSecondary = false, Options options = Mode::User, int timeout = 1000, const QString &userData = {} );
~SingleApplication() override;
/**
* @brief Returns if the instance is the primary instance
* @returns {bool}
*/
bool isPrimary();
bool isPrimary() const;
/**
* @brief Returns if the instance is a secondary instance
* @returns {bool}
*/
bool isSecondary();
bool isSecondary() const;
/**
* @brief Returns a unique identifier for the current instance
* @returns {qint32}
*/
quint32 instanceId();
quint32 instanceId() const;
/**
* @brief Returns the process ID (PID) of the primary instance
* @returns {qint64}
*/
qint64 primaryPid();
qint64 primaryPid() const;
/**
* @brief Returns the username of the user running the primary instance
* @returns {QString}
*/
QString primaryUser();
QString primaryUser() const;
/**
* @brief Returns the username of the current user
* @returns {QString}
*/
QString currentUser();
QString currentUser() const;
/**
* @brief Sends a message to the primary instance. Returns true on success.
@ -137,7 +137,7 @@ public:
* @brief Get the set user data.
* @returns {QStringList}
*/
QStringList userData();
QStringList userData() const;
Q_SIGNALS:
void instanceStarted();

@ -263,20 +263,46 @@ bool SingleApplicationPrivate::connectToPrimary( int msecs, ConnectionType conne
#endif
writeStream << checksum;
// The header indicates the message length that follows
return writeConfirmedMessage( static_cast<int>(msecs - time.elapsed()), initMsg );
}
void SingleApplicationPrivate::writeAck( QLocalSocket *sock ) {
sock->putChar('\n');
}
bool SingleApplicationPrivate::writeConfirmedMessage (int msecs, const QByteArray &msg)
{
QElapsedTimer time;
time.start();
// Frame 1: The header indicates the message length that follows
QByteArray header;
QDataStream headerStream(&header, QIODevice::WriteOnly);
#if (QT_VERSION >= QT_VERSION_CHECK(5, 6, 0))
headerStream.setVersion(QDataStream::Qt_5_6);
#endif
headerStream << static_cast <quint64>( initMsg.length() );
headerStream << static_cast <quint64>( msg.length() );
socket->write( header );
socket->write( initMsg );
bool result = socket->waitForBytesWritten( static_cast<int>(msecs - time.elapsed()) );
if( ! writeConfirmedFrame( static_cast<int>(msecs - time.elapsed()), header ))
return false;
// Frame 2: The message
return writeConfirmedFrame( static_cast<int>(msecs - time.elapsed()), msg );
}
bool SingleApplicationPrivate::writeConfirmedFrame( int msecs, const QByteArray &msg )
{
socket->write( msg );
socket->flush();
return result;
bool result = socket->waitForReadyRead( msecs ); // await ack byte
if (result) {
socket->read( 1 );
return true;
}
return false;
}
quint16 SingleApplicationPrivate::blockChecksum() const
@ -321,32 +347,36 @@ void SingleApplicationPrivate::slotConnectionEstablished()
QLocalSocket *nextConnSocket = server->nextPendingConnection();
connectionMap.insert(nextConnSocket, ConnectionInfo());
QObject::connect(nextConnSocket, &QLocalSocket::aboutToClose,
QObject::connect(nextConnSocket, &QLocalSocket::aboutToClose, this,
[nextConnSocket, this](){
auto &info = connectionMap[nextConnSocket];
Q_EMIT this->slotClientConnectionClosed( nextConnSocket, info.instanceId );
this->slotClientConnectionClosed( nextConnSocket, info.instanceId );
}
);
QObject::connect(nextConnSocket, &QLocalSocket::disconnected,
QObject::connect(nextConnSocket, &QLocalSocket::disconnected, nextConnSocket, &QLocalSocket::deleteLater);
QObject::connect(nextConnSocket, &QLocalSocket::destroyed, this,
[nextConnSocket, this](){
connectionMap.remove(nextConnSocket);
nextConnSocket->deleteLater();
}
);
QObject::connect(nextConnSocket, &QLocalSocket::readyRead,
QObject::connect(nextConnSocket, &QLocalSocket::readyRead, this,
[nextConnSocket, this](){
auto &info = connectionMap[nextConnSocket];
switch(info.stage){
case StageHeader:
readInitMessageHeader(nextConnSocket);
case StageInitHeader:
readMessageHeader( nextConnSocket, StageInitBody );
break;
case StageBody:
case StageInitBody:
readInitMessageBody(nextConnSocket);
break;
case StageConnected:
Q_EMIT this->slotDataAvailable( nextConnSocket, info.instanceId );
case StageConnectedHeader:
readMessageHeader( nextConnSocket, StageConnectedBody );
break;
case StageConnectedBody:
this->slotDataAvailable( nextConnSocket, info.instanceId );
break;
default:
break;
@ -355,7 +385,7 @@ void SingleApplicationPrivate::slotConnectionEstablished()
);
}
void SingleApplicationPrivate::readInitMessageHeader( QLocalSocket *sock )
void SingleApplicationPrivate::readMessageHeader( QLocalSocket *sock, SingleApplicationPrivate::ConnectionStage nextStage )
{
if (!connectionMap.contains( sock )){
return;
@ -375,29 +405,35 @@ void SingleApplicationPrivate::readInitMessageHeader( QLocalSocket *sock )
quint64 msgLen = 0;
headerStream >> msgLen;
ConnectionInfo &info = connectionMap[sock];
info.stage = StageBody;
info.stage = nextStage;
info.msgLen = msgLen;
if ( sock->bytesAvailable() >= (qint64) msgLen ){
readInitMessageBody( sock );
}
writeAck( sock );
}
void SingleApplicationPrivate::readInitMessageBody( QLocalSocket *sock )
bool SingleApplicationPrivate::isFrameComplete( QLocalSocket *sock )
{
Q_Q(SingleApplication);
if (!connectionMap.contains( sock )){
return;
return false;
}
ConnectionInfo &info = connectionMap[sock];
if( sock->bytesAvailable() < ( qint64 )info.msgLen ){
return;
return false;
}
return true;
}
void SingleApplicationPrivate::readInitMessageBody( QLocalSocket *sock )
{
Q_Q(SingleApplication);
if( !isFrameComplete( sock ) )
return;
// Read the message body
QByteArray msgBytes = sock->read(info.msgLen);
QByteArray msgBytes = sock->readAll();
QDataStream readStream(msgBytes);
#if (QT_VERSION >= QT_VERSION_CHECK(5, 6, 0))
@ -437,8 +473,9 @@ void SingleApplicationPrivate::readInitMessageBody( QLocalSocket *sock )
return;
}
ConnectionInfo &info = connectionMap[sock];
info.instanceId = instanceId;
info.stage = StageConnected;
info.stage = StageConnectedHeader;
if( connectionType == NewInstance ||
( connectionType == SecondaryInstance &&
@ -447,21 +484,28 @@ void SingleApplicationPrivate::readInitMessageBody( QLocalSocket *sock )
Q_EMIT q->instanceStarted();
}
if (sock->bytesAvailable() > 0){
Q_EMIT this->slotDataAvailable( sock, instanceId );
}
writeAck( sock );
}
void SingleApplicationPrivate::slotDataAvailable( QLocalSocket *dataSocket, quint32 instanceId )
{
Q_Q(SingleApplication);
if ( !isFrameComplete( dataSocket ) )
return;
Q_EMIT q->receivedMessage( instanceId, dataSocket->readAll() );
writeAck( dataSocket );
ConnectionInfo &info = connectionMap[dataSocket];
info.stage = StageConnectedHeader;
}
void SingleApplicationPrivate::slotClientConnectionClosed( QLocalSocket *closedSocket, quint32 instanceId )
{
if( closedSocket->bytesAvailable() > 0 )
Q_EMIT slotDataAvailable( closedSocket, instanceId );
slotDataAvailable( closedSocket, instanceId );
}
void SingleApplicationPrivate::randomSleep()
@ -470,7 +514,7 @@ void SingleApplicationPrivate::randomSleep()
QThread::msleep( QRandomGenerator::global()->bounded( 8u, 18u ));
#else
qsrand( QDateTime::currentMSecsSinceEpoch() % std::numeric_limits<uint>::max() );
QThread::msleep( 8 + static_cast <unsigned long>( static_cast <float>( qrand() ) / RAND_MAX * 10 ));
QThread::msleep( qrand() % 11 + 8);
#endif
}

@ -61,9 +61,10 @@ public:
Reconnect = 3
};
enum ConnectionStage : quint8 {
StageHeader = 0,
StageBody = 1,
StageConnected = 2,
StageInitHeader = 0,
StageInitBody = 1,
StageConnectedHeader = 2,
StageConnectedBody = 3,
};
Q_DECLARE_PUBLIC(SingleApplication)
@ -79,8 +80,12 @@ public:
quint16 blockChecksum() const;
qint64 primaryPid() const;
QString primaryUser() const;
void readInitMessageHeader(QLocalSocket *socket);
bool isFrameComplete(QLocalSocket *sock);
void readMessageHeader(QLocalSocket *socket, ConnectionStage nextStage);
void readInitMessageBody(QLocalSocket *socket);
void writeAck(QLocalSocket *sock);
bool writeConfirmedFrame(int msecs, const QByteArray &msg);
bool writeConfirmedMessage(int msecs, const QByteArray &msg);
static void randomSleep();
void addAppData(const QString &data);
QStringList appData() const;
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