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Add example showing the benefits of using bindable properties

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Added two examples for modeling a subscription service: signal/slot
connection-based and bindable property-based. The examples are based
on the example from Fabian's Qt WS talk about the bindable properties.

Pick-to: 6.2
Task-number: QTBUG-97655
Change-Id: I0345913b8b6e5c40b8477e128d36483598bdfcaa
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Ivan Solovev <ivan.solovev@qt.io>
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
This commit is contained in:
Sona Kurazyan 2021-11-25 11:08:01 +01:00
parent 75eb08711e
commit cee89e70a6
24 changed files with 1492 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
examples/corelib/CMakeLists.txt
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@ -1,5 +1,6 @@
# Generated from corelib.pro.
add_subdirectory(bindableproperties)
add_subdirectory(ipc)
add_subdirectory(mimetypes)
add_subdirectory(serialization)

2
examples/corelib/bindableproperties/CMakeLists.txt Normal file
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qt_internal_add_example(bindablesubscription)
qt_internal_add_example(subscription)

4
examples/corelib/bindableproperties/bindableproperties.pro Normal file
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TEMPLATE = subdirs
SUBDIRS = \
bindablesubscription \
subscription

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examples/corelib/bindableproperties/bindablesubscription/CMakeLists.txt Normal file
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cmake_minimum_required(VERSION 3.16)
project(bindablesubscription LANGUAGES CXX)
set(CMAKE_INCLUDE_CURRENT_DIR ON)
set(CMAKE_AUTOMOC ON)
set(CMAKE_AUTORCC ON)
set(CMAKE_AUTOUIC ON)
if(NOT DEFINED INSTALL_EXAMPLESDIR)
set(INSTALL_EXAMPLESDIR "examples")
endif()
set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/corelib/bindableproperties/bindablesubscription")
find_package(Qt6 COMPONENTS Core)
find_package(Qt6 COMPONENTS Gui)
find_package(Qt6 COMPONENTS Widgets)
qt_add_executable(bindablesubscription
../shared/subscriptionwindow.cpp ../shared/subscriptionwindow.h ../shared/subscriptionwindow.ui
main.cpp
main.cpp
bindablesubscription.cpp bindablesubscription.h
bindableuser.cpp bindableuser.h
)
target_link_libraries(bindablesubscription PUBLIC
Qt::Core
Qt::Gui
Qt::Widgets
)
# Resources:
set(countries_resource_files
"../shared/finland.png"
"../shared/germany.png"
"../shared/norway.png"
)
qt6_add_resources(bindablesubscription "countries"
PREFIX
"/"
BASE
"../shared"
FILES
${countries_resource_files}
)
install(TARGETS bindablesubscription
RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}"
BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}"
LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}"
)

90
examples/corelib/bindableproperties/bindablesubscription/bindablesubscription.cpp Normal file
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/****************************************************************************
**
** Copyright (C) 2021 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 "bindablesubscription.h"
#include "bindableuser.h"
BindableSubscription::BindableSubscription(BindableUser *user) : m_user(user)
{
Q_ASSERT(user);
m_price.setBinding([this] { return qRound(calculateDiscount() * m_duration * basePrice()); });
m_isValid.setBinding([this] {
return m_user->country() != BindableUser::None && m_user->age() > 12;
});
}
void BindableSubscription::setDuration(Duration newDuration)
{
m_duration = newDuration;
}
double BindableSubscription::calculateDiscount() const
{
switch (m_duration) {
case Monthly:
return 1;
case Quarterly:
return 0.9;
case Yearly:
return 0.6;
}
Q_ASSERT(false);
return -1;
}
int BindableSubscription::basePrice() const
{
if (m_user->country() == BindableUser::None)
return 0;
return (m_user->country() == BindableUser::Norway) ? 100 : 80;
}

87
examples/corelib/bindableproperties/bindablesubscription/bindablesubscription.h Normal file
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/****************************************************************************
**
** Copyright (C) 2021 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 BINDABLESUBSCRIPTION_H
#define BINDABLESUBSCRIPTION_H
#include <QPointer>
#include <QProperty>
class BindableUser;
class BindableSubscription
{
public:
enum Duration { Monthly = 1, Quarterly = 4, Yearly = 12 };
BindableSubscription(BindableUser *user);
BindableSubscription(const BindableSubscription &) = delete;
int price() const { return m_price; }
QBindable<int> bindablePrice() { return &m_price; }
Duration duration() const { return m_duration; }
void setDuration(Duration newDuration);
QBindable<Duration> bindableDuration() { return &m_duration; }
bool isValid() const { return m_isValid; }
QBindable<bool> bindableIsValid() { return &m_isValid; }
private:
double calculateDiscount() const;
int basePrice() const;
BindableUser *m_user;
QProperty<Duration> m_duration { Monthly };
QProperty<int> m_price { 0 };
QProperty<bool> m_isValid { false };
};
#endif // BNDABLESUBSCRIPTION_H

22
examples/corelib/bindableproperties/bindablesubscription/bindablesubscription.pro Normal file
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@ -0,0 +1,22 @@
QT += widgets
TARGET = bindablesubscription
SOURCES += main.cpp \
bindablesubscription.cpp \
bindableuser.cpp \
../shared/subscriptionwindow.cpp
target.path = $$[QT_INSTALL_EXAMPLES]/corelib/bindableproperties/bindablesubscription
INSTALLS += target
FORMS += \
../shared/subscriptionwindow.ui
HEADERS += \
bindablesubscription.h \
bindableuser.h \
../shared/subscriptionwindow.h
RESOURCES += \
../shared/countries.qrc

61
examples/corelib/bindableproperties/bindablesubscription/bindableuser.cpp Normal file
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/****************************************************************************
**
** Copyright (C) 2021 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 "bindableuser.h"
void BindableUser::setCountry(Country country)
{
m_country = country;
}
void BindableUser::setAge(int age)
{
m_age = age;
}

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examples/corelib/bindableproperties/bindablesubscription/bindableuser.h Normal file
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/****************************************************************************
**
** Copyright (C) 2021 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 BINDABLEUSER_H
#define BINDABLEUSER_H
#include <QProperty>
class BindableUser
{
public:
enum Country {
None,
Finland,
Germany,
Norway,
};
BindableUser() = default;
BindableUser(const BindableUser &) = delete;
Country country() const { return m_country; }
void setCountry(Country country);
QBindable<Country> bindableCountry() { return &m_country; }
int age() const { return m_age; }
void setAge(int age);
QBindable<int> bindableAge() { return &m_age; }
private:
QProperty<Country> m_country { None };
QProperty<int> m_age { 0 };
};
#endif // BINDABLEUSER_H

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examples/corelib/bindableproperties/bindablesubscription/main.cpp Normal file
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/****************************************************************************
**
** Copyright (C) 2021 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 "../shared/subscriptionwindow.h"
#include "bindablesubscription.h"
#include "bindableuser.h"
#include <QApplication>
#include <QButtonGroup>
#include <QLabel>
#include <QPushButton>
#include <QRadioButton>
#include <QSpinBox>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
BindableUser user;
BindableSubscription subscription(&user);
SubscriptionWindow w;
// Initialize subscription data
QRadioButton *monthly = w.findChild<QRadioButton *>("btnMonthly");
QObject::connect(monthly, &QRadioButton::clicked, [&] {
subscription.setDuration(BindableSubscription::Monthly);
});
QRadioButton *quarterly = w.findChild<QRadioButton *>("btnQuarterly");
QObject::connect(quarterly, &QRadioButton::clicked, [&] {
subscription.setDuration(BindableSubscription::Quarterly);
});
QRadioButton *yearly = w.findChild<QRadioButton *>("btnYearly");
QObject::connect(yearly, &QRadioButton::clicked, [&] {
subscription.setDuration(BindableSubscription::Yearly);
});
// Initialize user data
QPushButton *germany = w.findChild<QPushButton *>("btnGermany");
QObject::connect(germany, &QPushButton::clicked, [&] {
user.setCountry(BindableUser::Germany);
});
QPushButton *finland = w.findChild<QPushButton *>("btnFinland");
QObject::connect(finland, &QPushButton::clicked, [&] {
user.setCountry(BindableUser::Finland);
});
QPushButton *norway = w.findChild<QPushButton *>("btnNorway");
QObject::connect(norway, &QPushButton::clicked, [&] {
user.setCountry(BindableUser::Norway);
});
QSpinBox *ageSpinBox = w.findChild<QSpinBox *>("ageSpinBox");
QObject::connect(ageSpinBox, &QSpinBox::valueChanged, [&](int value) {
user.setAge(value);
});
QLabel *priceDisplay = w.findChild<QLabel *>("priceDisplay");
// Track price changes
auto priceChangeHandler = subscription.bindablePrice().subscribe([&] {
priceDisplay->setText(QString::number(subscription.price()));
});
auto priceValidHandler = subscription.bindableIsValid().subscribe([&] {
priceDisplay->setEnabled(subscription.isValid());
});
w.show();
return a.exec();
}

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examples/corelib/bindableproperties/shared/countries.qrc Normal file
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<RCC>
<qresource prefix="/">
<file>germany.png</file>
<file>norway.png</file>
<file>finland.png</file>
</qresource>
</RCC>

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63
examples/corelib/bindableproperties/shared/subscriptionwindow.cpp Normal file
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/****************************************************************************
**
** Copyright (C) 2021 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 "subscriptionwindow.h"
#include "ui_subscriptionwindow.h"
SubscriptionWindow::SubscriptionWindow(QWidget *parent)
: QWidget(parent), ui(new Ui::SubscriptionWindow)
{
ui->setupUi(this);
}
SubscriptionWindow::~SubscriptionWindow()
{
delete ui;
}

76
examples/corelib/bindableproperties/shared/subscriptionwindow.h Normal file
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/****************************************************************************
**
** Copyright (C) 2021 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 SUBSCRIPTIONWINDOW_H
#define SUBSCRIPTIONWINDOW_H
#include <QWidget>
QT_BEGIN_NAMESPACE
namespace Ui {
class SubscriptionWindow;
}
QT_END_NAMESPACE
class User;
class SubscriptionWindow : public QWidget
{
Q_OBJECT
public:
explicit SubscriptionWindow(QWidget *parent = nullptr);
~SubscriptionWindow();
private:
Ui::SubscriptionWindow *ui;
};
#endif // SUBSCRIPTIONWINDOW_H

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examples/corelib/bindableproperties/shared/subscriptionwindow.ui Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
<class>SubscriptionWindow</class>
<widget class="QWidget" name="SubscriptionWindow">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>639</width>
<height>269</height>
</rect>
</property>
<property name="windowTitle">
<string>Subscription</string>
</property>
<layout class="QHBoxLayout" name="horizontalLayout_5">
<item>
<layout class="QVBoxLayout" name="verticalLayout">
<item>
<layout class="QHBoxLayout" name="horizontalLayout_4" stretch="0,0,0,0">
<item>
<spacer name="horizontalSpacer_3">
<property name="orientation">
<enum>Qt::Horizontal</enum>
</property>
<property name="sizeHint" stdset="0">
<size>
<width>40</width>
<height>20</height>
</size>
</property>
</spacer>
</item>
<item>
<widget class="QPushButton" name="btnGermany">
<property name="toolTip">
<string>Germany</string>
</property>
<property name="text">
<string/>
</property>
<property name="icon">
<iconset>
<normaloff>:/germany.png</normaloff>:/germany.png</iconset>
</property>
<property name="iconSize">
<size>
<width>32</width>
<height>32</height>
</size>
</property>
</widget>
</item>
<item>
<widget class="QPushButton" name="btnNorway">
<property name="toolTip">
<string>Norway</string>
</property>
<property name="text">
<string/>
</property>
<property name="icon">
<iconset>
<normaloff>:/norway.png</normaloff>:/norway.png</iconset>
</property>
<property name="iconSize">
<size>
<width>32</width>
<height>32</height>
</size>
</property>
</widget>
</item>
<item>
<widget class="QPushButton" name="btnFinland">
<property name="toolTip">
<string>Finland</string>
</property>
<property name="text">
<string/>
</property>
<property name="icon">
<iconset>
<normaloff>:/finland.png</normaloff>:/finland.png</iconset>
</property>
<property name="iconSize">
<size>
<width>32</width>
<height>32</height>
</size>
</property>
</widget>
</item>
</layout>
</item>
<item>
<layout class="QHBoxLayout" name="horizontalLayout">
<item>
<widget class="QLabel" name="ageLabel">
<property name="font">
<font>
<pointsize>14</pointsize>
<weight>75</weight>
<bold>true</bold>
</font>
</property>
<property name="text">
<string>Age</string>
</property>
<property name="margin">
<number>3</number>
</property>
</widget>
</item>
<item>
<widget class="QSpinBox" name="ageSpinBox">
<property name="sizePolicy">
<sizepolicy hsizetype="Minimum" vsizetype="Fixed">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="minimumSize">
<size>
<width>80</width>
<height>0</height>
</size>
</property>
<property name="value">
<number>0</number>
</property>
</widget>
</item>
<item>
<spacer name="horizontalSpacer">
<property name="orientation">
<enum>Qt::Horizontal</enum>
</property>
<property name="sizeHint" stdset="0">
<size>
<width>40</width>
<height>20</height>
</size>
</property>
</spacer>
</item>
</layout>
</item>
<item>
<spacer name="verticalSpacer">
<property name="orientation">
<enum>Qt::Vertical</enum>
</property>
<property name="sizeHint" stdset="0">
<size>
<width>20</width>
<height>40</height>
</size>
</property>
</spacer>
</item>
<item>
<layout class="QHBoxLayout" name="horizontalLayout_2">
<item>
<widget class="QLabel" name="intervalLabel">
<property name="font">
<font>
<pointsize>14</pointsize>
<weight>75</weight>
<bold>true</bold>
</font>
</property>
<property name="text">
<string>Interval</string>
</property>
<property name="margin">
<number>3</number>
</property>
</widget>
</item>
<item>
<widget class="QRadioButton" name="btnMonthly">
<property name="text">
<string>Monthly</string>
</property>
<property name="checked">
<bool>true</bool>
</property>
</widget>
</item>
<item>
<widget class="QRadioButton" name="btnQuarterly">
<property name="text">
<string>Quarterly</string>
</property>
</widget>
</item>
<item>
<widget class="QRadioButton" name="btnYearly">
<property name="text">
<string>Yearly</string>
</property>
</widget>
</item>
</layout>
</item>
<item>
<spacer name="verticalSpacer_2">
<property name="orientation">
<enum>Qt::Vertical</enum>
</property>
<property name="sizeHint" stdset="0">
<size>
<width>20</width>
<height>40</height>
</size>
</property>
</spacer>
</item>
<item>
<layout class="QHBoxLayout" name="horizontalLayout_3">
<item>
<widget class="QLabel" name="priceLabel">
<property name="font">
<font>
<pointsize>14</pointsize>
<weight>75</weight>
<bold>true</bold>
</font>
</property>
<property name="text">
<string>Price/month</string>
</property>
<property name="margin">
<number>3</number>
</property>
</widget>
</item>
<item>
<widget class="QLabel" name="priceDisplay">
<property name="text">
<string>0.0</string>
</property>
</widget>
</item>
<item>
<spacer name="horizontalSpacer_2">
<property name="orientation">
<enum>Qt::Horizontal</enum>
</property>
<property name="sizeHint" stdset="0">
<size>
<width>40</width>
<height>20</height>
</size>
</property>
</spacer>
</item>
</layout>
</item>
<item>
<spacer name="verticalSpacer_3">
<property name="orientation">
<enum>Qt::Vertical</enum>
</property>
<property name="sizeHint" stdset="0">
<size>
<width>20</width>
<height>40</height>
</size>
</property>
</spacer>
</item>
</layout>
</item>
</layout>
</widget>
<resources/>
<connections/>
</ui>

53
examples/corelib/bindableproperties/subscription/CMakeLists.txt Normal file
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cmake_minimum_required(VERSION 3.16)
project(subscription LANGUAGES CXX)
set(CMAKE_INCLUDE_CURRENT_DIR ON)
set(CMAKE_AUTOMOC ON)
set(CMAKE_AUTORCC ON)
set(CMAKE_AUTOUIC ON)
if(NOT DEFINED INSTALL_EXAMPLESDIR)
set(INSTALL_EXAMPLESDIR "examples")
endif()
set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/corelib/bindableproperties/subscription")
find_package(Qt6 COMPONENTS Core)
find_package(Qt6 COMPONENTS Gui)
find_package(Qt6 COMPONENTS Widgets)
qt_add_executable(subscription
../shared/subscriptionwindow.cpp ../shared/subscriptionwindow.h ../shared/subscriptionwindow.ui
main.cpp
subscription.cpp subscription.h
user.cpp user.h
)
target_link_libraries(subscription PUBLIC
Qt::Core
Qt::Gui
Qt::Widgets
)
# Resources:
set(countries_resource_files
"../shared/finland.png"
"../shared/germany.png"
"../shared/norway.png"
)
qt6_add_resources(subscription "countries"
PREFIX
"/"
BASE
"../shared"
FILES
${countries_resource_files}
)
install(TARGETS subscription
RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}"
BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}"
LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}"
)

128
examples/corelib/bindableproperties/subscription/main.cpp Normal file
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/****************************************************************************
**
** Copyright (C) 2021 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 "../shared/subscriptionwindow.h"
#include "subscription.h"
#include "user.h"
#include <QApplication>
#include <QButtonGroup>
#include <QLabel>
#include <QPushButton>
#include <QRadioButton>
#include <QSpinBox>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
User user;
Subscription subscription(&user);
SubscriptionWindow w;
// Initialize subscription data
QRadioButton *monthly = w.findChild<QRadioButton *>("btnMonthly");
QObject::connect(monthly, &QRadioButton::clicked, &subscription, [&] {
subscription.setDuration(Subscription::Monthly);
});
QRadioButton *quarterly = w.findChild<QRadioButton *>("btnQuarterly");
QObject::connect(quarterly, &QRadioButton::clicked, &subscription, [&] {
subscription.setDuration(Subscription::Quarterly);
});
QRadioButton *yearly = w.findChild<QRadioButton *>("btnYearly");
QObject::connect(yearly, &QRadioButton::clicked, &subscription, [&] {
subscription.setDuration(Subscription::Yearly);
});
// Initialize user data
QPushButton *germany = w.findChild<QPushButton *>("btnGermany");
QObject::connect(germany, &QPushButton::clicked, &user, [&] {
user.setCountry(User::Germany);
});
QPushButton *finland = w.findChild<QPushButton *>("btnFinland");
QObject::connect(finland, &QPushButton::clicked, &user, [&] {
user.setCountry(User::Finland);
});
QPushButton *norway = w.findChild<QPushButton *>("btnNorway");
QObject::connect(norway, &QPushButton::clicked, &user, [&] {
user.setCountry(User::Norway);
});
QSpinBox *ageSpinBox = w.findChild<QSpinBox *>("ageSpinBox");
QObject::connect(ageSpinBox, &QSpinBox::valueChanged, &user, [&](int value) {
user.setAge(value);
});
// Initialize price data
QLabel *priceDisplay = w.findChild<QLabel *>("priceDisplay");
priceDisplay->setText(QString::number(subscription.price()));
priceDisplay->setEnabled(subscription.isValid());
// Track the price changes
QObject::connect(&subscription, &Subscription::priceChanged, [&] {
priceDisplay->setText(QString::number(subscription.price()));
});
QObject::connect(&subscription, &Subscription::isValidChanged, [&] {
priceDisplay->setEnabled(subscription.isValid());
});
QObject::connect(&user, &User::countryChanged, [&] {
subscription.calculatePrice();
subscription.updateValidity();
});
QObject::connect(&user, &User::ageChanged, [&] {
subscription.updateValidity();
});
w.show();
return a.exec();
}

106
examples/corelib/bindableproperties/subscription/subscription.cpp Normal file
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/****************************************************************************
**
** Copyright (C) 2021 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 "subscription.h"
#include "user.h"
Subscription::Subscription(User *user) : m_user(user)
{
Q_ASSERT(user);
}
void Subscription::calculatePrice()
{
const auto oldPrice = m_price;
m_price = qRound(calculateDiscount() * m_duration * basePrice());
if (m_price != oldPrice)
emit priceChanged();
}
void Subscription::setDuration(Duration newDuration)
{
if (newDuration != m_duration) {
m_duration = newDuration;
calculatePrice();
emit durationChanged();
}
}
double Subscription::calculateDiscount() const
{
switch (m_duration) {
case Monthly:
return 1;
case Quarterly:
return 0.9;
case Yearly:
return 0.6;
}
Q_ASSERT(false);
return -1;
}
int Subscription::basePrice() const
{
if (m_user->country() == User::None)
return 0;
return (m_user->country() == User::Norway) ? 100 : 80;
}
void Subscription::updateValidity()
{
bool isValid = m_isValid;
m_isValid = m_user->country() != User::None && m_user->age() > 12;
if (m_isValid != isValid)
emit isValidChanged();
}

91
examples/corelib/bindableproperties/subscription/subscription.h Normal file
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/****************************************************************************
**
** Copyright (C) 2021 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 SUBSCRIPTION_H
#define SUBSCRIPTION_H
#include <QObject>
#include <QPointer>
class User;
class Subscription : public QObject
{
Q_OBJECT
public:
enum Duration { Monthly = 1, Quarterly = 4, Yearly = 12 };
Subscription(User *user);
void calculatePrice();
int price() const { return m_price; }
Duration duration() const { return m_duration; }
void setDuration(Duration newDuration);
bool isValid() const { return m_isValid; }
void updateValidity();
signals:
void priceChanged();
void durationChanged();
void isValidChanged();
private:
double calculateDiscount() const;
int basePrice() const;
QPointer<User> m_user;
Duration m_duration = Monthly;
int m_price = 0;
bool m_isValid = false;
};
#endif // SUBSCRIPTION_H

22
examples/corelib/bindableproperties/subscription/subscription.pro Normal file
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@ -0,0 +1,22 @@
QT += widgets
TARGET = subscription
SOURCES += main.cpp \
subscription.cpp \
user.cpp \
../shared/subscriptionwindow.cpp
target.path = $$[QT_INSTALL_EXAMPLES]/corelib/bindableproperties/subscription
INSTALLS += target
FORMS += \
../shared/subscriptionwindow.ui
HEADERS += \
subscription.h \
user.h \
../shared/subscriptionwindow.h
RESOURCES += \
../shared/countries.qrc

67
examples/corelib/bindableproperties/subscription/user.cpp Normal file
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@ -0,0 +1,67 @@
/****************************************************************************
**
** Copyright (C) 2021 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 "user.h"
void User::setCountry(Country country)
{
if (m_country != country) {
m_country = country;
emit countryChanged();
}
}
void User::setAge(int age)
{
if (m_age != age) {
m_age = age;
emit ageChanged();
}
}

82
examples/corelib/bindableproperties/subscription/user.h Normal file
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/****************************************************************************
**
** Copyright (C) 2021 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 USER_H
#define USER_H
#include <QObject>
class User : public QObject
{
Q_OBJECT
public:
enum Country {
None,
Finland,
Germany,
Norway,
};
Country country() const { return m_country; }
void setCountry(Country country);
int age() const { return m_age; }
void setAge(int age);
signals:
void countryChanged();
void ageChanged();
private:
Country m_country = Country::None;
int m_age = 0;
};
#endif // USER_H