diff options
Diffstat (limited to 'examples/corelib/bindableproperties/subscription')
7 files changed, 316 insertions, 0 deletions
diff --git a/examples/corelib/bindableproperties/subscription/CMakeLists.txt b/examples/corelib/bindableproperties/subscription/CMakeLists.txt new file mode 100644 index 0000000000..91b9340fbf --- /dev/null +++ b/examples/corelib/bindableproperties/subscription/CMakeLists.txt @@ -0,0 +1,12 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +qt_add_executable(subscription + main.cpp + subscription.cpp subscription.h + user.cpp user.h +) + +target_link_libraries(subscription PRIVATE + bindableproperties_shared +) diff --git a/examples/corelib/bindableproperties/subscription/main.cpp b/examples/corelib/bindableproperties/subscription/main.cpp new file mode 100644 index 0000000000..3f98da7467 --- /dev/null +++ b/examples/corelib/bindableproperties/subscription/main.cpp @@ -0,0 +1,95 @@ +// Copyright (C) 2021 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#include "../shared/subscriptionwindow.h" +#include "subscription.h" +#include "user.h" + +#include <QApplication> +#include <QLabel> +#include <QLocale> +#include <QPushButton> +#include <QRadioButton> +#include <QSpinBox> +#include <QString> + +using namespace Qt::StringLiterals; + +int main(int argc, char *argv[]) +{ + QApplication a(argc, argv); + +//! [init] + User user; + Subscription subscription(&user); +//! [init] + + SubscriptionWindow w; + + // Initialize subscription data + QRadioButton *monthly = w.findChild<QRadioButton *>(u"btnMonthly"_s); + QObject::connect(monthly, &QRadioButton::clicked, &subscription, [&] { + subscription.setDuration(Subscription::Monthly); + }); + QRadioButton *quarterly = w.findChild<QRadioButton *>(u"btnQuarterly"_s); + QObject::connect(quarterly, &QRadioButton::clicked, &subscription, [&] { + subscription.setDuration(Subscription::Quarterly); + }); + QRadioButton *yearly = w.findChild<QRadioButton *>(u"btnYearly"_s); + QObject::connect(yearly, &QRadioButton::clicked, &subscription, [&] { + subscription.setDuration(Subscription::Yearly); + }); + + // Initialize user data + QPushButton *germany = w.findChild<QPushButton *>(u"btnGermany"_s); + QObject::connect(germany, &QPushButton::clicked, &user, [&] { + user.setCountry(User::Country::Germany); + }); + QPushButton *finland = w.findChild<QPushButton *>(u"btnFinland"_s); + QObject::connect(finland, &QPushButton::clicked, &user, [&] { + user.setCountry(User::Country::Finland); + }); + QPushButton *norway = w.findChild<QPushButton *>(u"btnNorway"_s); + QObject::connect(norway, &QPushButton::clicked, &user, [&] { + user.setCountry(User::Country::Norway); + }); + + QSpinBox *ageSpinBox = w.findChild<QSpinBox *>(u"ageSpinBox"_s); + QObject::connect(ageSpinBox, &QSpinBox::valueChanged, &user, [&](int value) { + user.setAge(value); + }); + + // Initialize price data + QLabel *priceDisplay = w.findChild<QLabel *>(u"priceDisplay"_s); + priceDisplay->setText(QString::number(subscription.price())); + priceDisplay->setEnabled(subscription.isValid()); + + // Track the price changes + +//! [connect-price-changed] + QObject::connect(&subscription, &Subscription::priceChanged, priceDisplay, [&] { + QLocale lc{QLocale::AnyLanguage, user.country()}; + priceDisplay->setText(lc.toCurrencyString(subscription.price() / subscription.duration())); + }); +//! [connect-price-changed] + +//! [connect-validity-changed] + QObject::connect(&subscription, &Subscription::isValidChanged, priceDisplay, [&] { + priceDisplay->setEnabled(subscription.isValid()); + }); +//! [connect-validity-changed] + +//! [connect-user] + QObject::connect(&user, &User::countryChanged, &subscription, [&] { + subscription.calculatePrice(); + subscription.updateValidity(); + }); + + QObject::connect(&user, &User::ageChanged, &subscription, [&] { + subscription.updateValidity(); + }); +//! [connect-user] + + w.show(); + return a.exec(); +} diff --git a/examples/corelib/bindableproperties/subscription/subscription.cpp b/examples/corelib/bindableproperties/subscription/subscription.cpp new file mode 100644 index 0000000000..85cc5798cc --- /dev/null +++ b/examples/corelib/bindableproperties/subscription/subscription.cpp @@ -0,0 +1,79 @@ +// Copyright (C) 2021 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#include "subscription.h" +#include "user.h" + +Subscription::Subscription(User *user) : m_user(user) +{ + Q_ASSERT(user); +} + +//! [calculate-price] + +void Subscription::calculatePrice() +{ + const auto oldPrice = m_price; + + m_price = qRound(calculateDiscount() * int(m_duration) * basePrice()); + if (m_price != oldPrice) + emit priceChanged(); +} + +//! [calculate-price] + +//! [set-duration] + +void Subscription::setDuration(Duration newDuration) +{ + if (newDuration != m_duration) { + m_duration = newDuration; + calculatePrice(); + emit durationChanged(); + } +} + +//! [set-duration] + +//! [calculate-discount] + +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; +} + +//! [calculate-discount] + +//! [calculate-base-price] + +int Subscription::basePrice() const +{ + if (m_user->country() == User::Country::AnyTerritory) + return 0; + + return (m_user->country() == User::Country::Norway) ? 100 : 80; +} + +//! [calculate-base-price] + +//! [update-validity] + +void Subscription::updateValidity() +{ + bool isValid = m_isValid; + m_isValid = m_user->country() != User::Country::AnyTerritory && m_user->age() > 12; + + if (m_isValid != isValid) + emit isValidChanged(); +} + +//! [update-validity] diff --git a/examples/corelib/bindableproperties/subscription/subscription.h b/examples/corelib/bindableproperties/subscription/subscription.h new file mode 100644 index 0000000000..8f0d34e948 --- /dev/null +++ b/examples/corelib/bindableproperties/subscription/subscription.h @@ -0,0 +1,48 @@ +// Copyright (C) 2021 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#ifndef SUBSCRIPTION_H +#define SUBSCRIPTION_H + +#include <QObject> +#include <QPointer> + +class User; + +//! [subscription-class] + +class Subscription : public QObject +{ + Q_OBJECT +public: + enum Duration { Monthly = 1, Quarterly = 3, 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; +}; + +//! [subscription-class] + +#endif // SUBSCRIPTION_H diff --git a/examples/corelib/bindableproperties/subscription/subscription.pro b/examples/corelib/bindableproperties/subscription/subscription.pro new file mode 100644 index 0000000000..68910904bb --- /dev/null +++ b/examples/corelib/bindableproperties/subscription/subscription.pro @@ -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 + diff --git a/examples/corelib/bindableproperties/subscription/user.cpp b/examples/corelib/bindableproperties/subscription/user.cpp new file mode 100644 index 0000000000..575bcb13ee --- /dev/null +++ b/examples/corelib/bindableproperties/subscription/user.cpp @@ -0,0 +1,24 @@ +// Copyright (C) 2021 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#include "user.h" + +//! [user-setters] + +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(); + } +} + +//! [user-setters] diff --git a/examples/corelib/bindableproperties/subscription/user.h b/examples/corelib/bindableproperties/subscription/user.h new file mode 100644 index 0000000000..dd32a4fe23 --- /dev/null +++ b/examples/corelib/bindableproperties/subscription/user.h @@ -0,0 +1,36 @@ +// Copyright (C) 2021 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#ifndef USER_H +#define USER_H + +#include <QLocale> +#include <QObject> + +//! [user-class] + +class User : public QObject +{ + Q_OBJECT + +public: + using Country = QLocale::Territory; + +public: + 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 { QLocale::AnyTerritory }; + int m_age { 0 }; +}; + +//! [user-class] +#endif // USER_H |