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Diffstat (limited to 'examples/corelib/bindableproperties/subscription/subscription.cpp')
-rw-r--r-- | examples/corelib/bindableproperties/subscription/subscription.cpp | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/examples/corelib/bindableproperties/subscription/subscription.cpp b/examples/corelib/bindableproperties/subscription/subscription.cpp new file mode 100644 index 0000000000..7f6da35862 --- /dev/null +++ b/examples/corelib/bindableproperties/subscription/subscription.cpp @@ -0,0 +1,106 @@ +/**************************************************************************** +** +** 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(); +} |