/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the documentation 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."
**
** $QT_END_LICENSE$
**
****************************************************************************/

/*!

    \example demos/coffee
    \title Coffee Machine Example
    \ingroup examples-tutorials

    \borderedimage coffee_machine_overview.png

    The coffee machine application lets you choose a type of coffee on the
    left side of the main screen. After selection, the app displays what
    the coffee blend will contain (ratio coffee/hot milk/milk foam).
    This can be modified with two sliders. When the brew has been started,
    the app shows an animated display of the brewing process, then returns
    to the start screen.

    First the start screen \c Animationflowform is displayed, showing a
    sidebar with several types of coffee, and an empty cup on the right
    screen.

    Selecting a coffee type - for example, cappuccino - triggers \c animation1
    and \c animation2 in CoffeeButton.qml.  On the right side, you will see
    the coffee blend you selected.

    \snippet demos/coffee/CoffeeButton.qml 0

    It also triggers cappuccinoButton.onClicked(), which sets the default
    mix for the coffee type selected:

    \snippet demos/coffee/SideBar.qml 0

    \borderedimage coffee_machine_selection.png
    \caption Coffee blend cappuccino

    \c sideBar.coffeeSelected() \c sets applicationFlow.state to "selection"

    If you click "Brew me a cup", choosingCoffee.brewButtonSelection.onClicked
    is triggered:

    \snippet demos/coffee/ApplicationFlow.qml 0

    On the right side of the screen, you will see two sliders, one for
    the amount of milk, and one for sugar. They will have default values,
    but can be modified by the user.

    \borderedimage coffee_machine_modify.png

    If you click on \c Brew, \c choosingCoffee.brewButton.onClicked() is triggered,
    which displays a screen with the message "Please insert cup into tray".

    \snippet demos/coffee/ApplicationFlow.qml 2

    \borderedimage coffee_machine_emptycup.png

    Clicking on \c Continue starts the brewing of the coffee type you
    selected.

    \snippet demos/coffee/ApplicationFlow.qml 1

    The brewing process is defined as follows in \c Brewing.qml:

    \snippet demos/coffee/Brewing.qml 0

    After completion, the application returns to the start screen.
*/