calculator-qml.qml Example File

calculator-qml/calculator-qml.qml
/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtScxml module 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."
**
** $QT_END_LICENSE$
**
****************************************************************************/

import CalculatorStateMachine 1.0
import QtQuick 2.5
import QtQuick.Window 2.0

Window {
    id: window
    visible: true
    width: 320
    height: 480

    CalculatorStateMachine {
        id: statemachine
        running: true
        onEventOccurred: {
            if (event.name === "updateDisplay")
                resultText.text = event.data.display;
        }
    }

    Rectangle {
        id: resultArea
        anchors.left: parent.left
        anchors.right: parent.right
        anchors.top: parent.top
        height: parent.height * 3 / 8 - 10
        border.color: "white"
        border.width: 1
        color: "#46a2da"
        Text {
            id: resultText
            anchors.leftMargin: operations.implicitMargin
            anchors.rightMargin: operations.implicitMargin
            anchors.fill: parent
            horizontalAlignment: Text.AlignRight
            verticalAlignment: Text.AlignVCenter
            text: "0"
            color: "white"
            font.pixelSize: window.height * 3 / 32
            font.family: "Open Sans Regular"
            fontSizeMode: Text.Fit
        }
    }

    Item {
        id: operations
        anchors.top: resultArea.bottom
        anchors.left: parent.left
        anchors.right: parent.right
        anchors.bottom: parent.bottom
        property real implicitMargin: {
            var ret = 0;
            for (var i = 0; i < visibleChildren.length; ++i) {
                var child = visibleChildren[i];
                ret += (child.implicitMargin || 0) / visibleChildren.length;
            }
            return ret;
        }

        Repeater {
            model: ["÷", "×", "+", "-"]
            Button {
                y: 0
                x: index * width
                width: parent.width / 4
                height: parent.height / 5
                color: pressed ? "#5caa15" : "#80c342"
                text: modelData
                fontHeight: 0.4
                onClicked: statemachine.submitEvent(eventName)
                property string eventName: {
                    switch (text) {
                    case "÷": return "OPER.DIV"
                    case "×": return "OPER.STAR"
                    case "+": return "OPER.PLUS"
                    case "-": return "OPER.MINUS"
                    }
                }
            }
        }

        Repeater {
            model: ["7", "8", "9", "4", "5", "6", "1", "2", "3", "0", ".", "C"]
            Button {
                x: (index % 3) * width
                y: Math.floor(index / 3 + 1) * height
                width: parent.width / 4
                height: parent.height / 5
                color: pressed ? "#d6d6d6" : "#eeeeee"
                text: modelData
                onClicked: statemachine.submitEvent(eventName)
                property string eventName: {
                    switch (text) {
                    case ".": return "POINT"
                    case "C": return "C"
                    default: return "DIGIT." + text
                    }
                }
            }
        }

        Button {
            x: 3 * width
            y: parent.height / 5
            textHeight: y - 2
            fontHeight: 0.4
            width: parent.width / 4
            height: y * 4
            color: pressed ? "#e0b91c" : "#face20"
            text: "="
            onClicked: statemachine.submitEvent("EQUALS")
        }
    }
}

© 2016 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners. The documentation provided herein is licensed under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation. Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners.