StockListView.qml Example File | Qt Quick 5.5

- Qt 5.5
- Qt Quick
- Qt Quick Demo - StocQt
- StockListView.qml Example File
- Qt 5.5.1 Reference Documentation

# StockListView.qml Example File

demos/stocqt/content/StockListView.qml

    /****************************************************************************
    **
    ** Copyright (C) 2015 The Qt Company Ltd.
    ** Contact: http://www.qt.io/licensing/
    **
    ** This file is part of the examples of the Qt Toolkit.
    **
    ** $QT_BEGIN_LICENSE:BSD$
    ** 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 QtQuick 2.0

    Rectangle {
        id: root
        width: 320
        height: 410
        anchors.top: parent.top
        anchors.bottom: parent.bottom
        color: "white"

        property string currentStockId: ""
        property string currentStockName: ""

        ListView {
            id: view
            anchors.fill: parent
            width: parent.width
            clip: true
            keyNavigationWraps: true
            highlightMoveDuration: 0
            focus: true
            snapMode: ListView.SnapToItem
            model: StockListModel{}

            function requestUrl(stockId) {
                var endDate = new Date(""); //today
                var startDate = new Date()
                startDate.setDate(startDate.getDate() - 5);

                var request = "http://ichart.finance.yahoo.com/table.csv?";
                request += "s=" + stockId;
                request += "&g=d";
                request += "&a=" + startDate.getMonth();
                request += "&b=" + startDate.getDate();
                request += "&c=" + startDate.getFullYear();
                request += "&d=" + endDate.getMonth();
                request += "&e=" + endDate.getDate();
                request += "&f=" + endDate.getFullYear();
                request += "&g=d";
                request += "&ignore=.csv";
                return request;
            }

            function getCloseValue(index) {
                var req = requestUrl(model.get(index).stockId);

                if (!req)
                    return;

                var xhr = new XMLHttpRequest;

                xhr.open("GET", req, true);

                xhr.onreadystatechange = function() {
                    if (xhr.readyState === XMLHttpRequest.LOADING || xhr.readyState === XMLHttpRequest.DONE) {
                        var records = xhr.responseText.split('\n');
                        if (records.length > 0) {
                            var r = records[1].split(',');
                            var today = parseFloat(r[4]);
                            model.setProperty(index, "value", today.toFixed(2));

                            r = records[2].split(',');
                            var yesterday = parseFloat(r[4]);
                            var change = today - yesterday;
                            if (change >= 0.0)
                                model.setProperty(index, "change", "+" + change.toFixed(2));
                            else
                                model.setProperty(index, "change", change.toFixed(2));

                            var changePercentage = (change / yesterday) * 100.0;
                            if (changePercentage >= 0.0)
                                model.setProperty(index, "changePercentage", "+" + changePercentage.toFixed(2) + "%");
                            else
                                model.setProperty(index, "changePercentage", changePercentage.toFixed(2) + "%");
                        }
                    }
                }
                xhr.send()
            }

            onCurrentIndexChanged: {
                mainRect.listViewActive = 0;
                root.currentStockId = model.get(currentIndex).stockId;
                root.currentStockName = model.get(currentIndex).name;
            }

            delegate: Rectangle {
                height: 102
                width: parent.width
                color: "transparent"
                MouseArea {
                    anchors.fill: parent;
                    onClicked: {
                        view.currentIndex = index;
                    }
                }

                Text {
                    id: stockIdText
                    anchors.top: parent.top
                    anchors.topMargin: 15
                    anchors.left: parent.left
                    anchors.leftMargin: 15
                    width: 125
                    height: 40
                    color: "#000000"
                    font.family: "Open Sans"
                    font.pointSize: 20
                    font.weight: Font.Bold
                    verticalAlignment: Text.AlignVCenter
                    text: stockId
                }

                Text {
                    id: stockValueText
                    anchors.top: parent.top
                    anchors.topMargin: 15
                    anchors.right: parent.right
                    anchors.rightMargin: 0.31 * parent.width
                    width: 190
                    height: 40
                    color: "#000000"
                    font.family: "Open Sans"
                    font.pointSize: 20
                    font.bold: true
                    horizontalAlignment: Text.AlignRight
                    verticalAlignment: Text.AlignVCenter
                    text: value
                    Component.onCompleted: view.getCloseValue(index);
                }

                Text {
                    id: stockValueChangeText
                    anchors.top: parent.top
                    anchors.topMargin: 15
                    anchors.right: parent.right
                    anchors.rightMargin: 20
                    width: 135
                    height: 40
                    color: "#328930"
                    font.family: "Open Sans"
                    font.pointSize: 20
                    font.bold: true
                    horizontalAlignment: Text.AlignRight
                    verticalAlignment: Text.AlignVCenter
                    text: change
                    onTextChanged: {
                        if (parseFloat(text) >= 0.0)
                            color = "#328930";
                        else
                            color = "#d40000";
                    }
                }

                Text {
                    id: stockNameText
                    anchors.top: stockIdText.bottom
                    anchors.left: parent.left
                    anchors.leftMargin: 15
                    width: 330
                    height: 30
                    color: "#000000"
                    font.family: "Open Sans"
                    font.pointSize: 16
                    font.bold: false
                    elide: Text.ElideRight
                    maximumLineCount: 1
                    verticalAlignment: Text.AlignVCenter
                    text: name
                }

                Text {
                    id: stockValueChangePercentageText
                    anchors.top: stockIdText.bottom
                    anchors.right: parent.right
                    anchors.rightMargin: 20
                    width: 120
                    height: 30
                    color: "#328930"
                    font.family: "Open Sans"
                    font.pointSize: 18
                    font.bold: false
                    horizontalAlignment: Text.AlignRight
                    verticalAlignment: Text.AlignVCenter
                    text: changePercentage
                    onTextChanged: {
                        if (parseFloat(text) >= 0.0)
                            color = "#328930";
                        else
                            color = "#d40000";
                    }
                }

                Rectangle {
                    id: endingLine
                    anchors.bottom: parent.bottom
                    anchors.left: parent.left
                    height: 1
                    width: parent.width
                    color: "#d7d7d7"
                }
            }

            highlight: Rectangle {
                width: parent.width
                color: "#eeeeee"
            }
        }
    }