diff options
Diffstat (limited to 'examples/declarative/canvas/stockchart/model.cpp')
-rw-r--r-- | examples/declarative/canvas/stockchart/model.cpp | 255 |
1 files changed, 0 insertions, 255 deletions
diff --git a/examples/declarative/canvas/stockchart/model.cpp b/examples/declarative/canvas/stockchart/model.cpp deleted file mode 100644 index 42eb2d592f..0000000000 --- a/examples/declarative/canvas/stockchart/model.cpp +++ /dev/null @@ -1,255 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/ -** -** 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 Nokia Corporation and its Subsidiary(-ies) 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 "model.h" - -#include <QtCore/QUrl> -#include <QtCore/QDate> -#include <QtCore/QList> -#include <QtCore/QStringList> -#include <QtCore/QDebug> - -#include <QtNetwork/QNetworkAccessManager> -#include <QtNetwork/QNetworkReply> - -StockModel::StockModel(QObject *parent) - : QAbstractListModel(parent) - , _startDate(QDate(1995, 4, 25)) - , _endDate(QDate::currentDate()) - , _dataCycle(StockModel::Daily) - , _manager(0) - , _updating(false) -{ - QHash<int, QByteArray> roles; - roles[StockModel::DateRole] = "date"; - roles[StockModel::SectionRole] = "year"; - roles[StockModel::OpenPriceRole] = "openPrice"; - roles[StockModel::ClosePriceRole] = "closePrice"; - roles[StockModel::HighPriceRole] = "highPrice"; - roles[StockModel::LowPriceRole] = "lowPrice"; - roles[StockModel::VolumeRole] = "volume"; - roles[StockModel::AdjustedPriceRole] = "adjustedPrice"; - setRoleNames(roles); - - connect(this, SIGNAL(stockNameChanged()), SLOT(requestData())); - connect(this, SIGNAL(startDateChanged()), SLOT(requestData())); - connect(this, SIGNAL(endDateChanged()), SLOT(requestData())); - connect(this, SIGNAL(dataCycleChanged()), SLOT(requestData())); - - _manager = new QNetworkAccessManager(this); - connect(_manager, SIGNAL(finished(QNetworkReply*)), this, SLOT(update(QNetworkReply*))); - -} - -int StockModel::rowCount(const QModelIndex & parent) const { - Q_UNUSED(parent); - return _prices.count(); -} - -StockPrice* StockModel::stockPriceAtIndex(int idx) const -{ - if (idx >=0 && idx < _prices.size()) { - return _prices[idx]; - } - return 0; -} - - -void StockModel::requestData() -{ - if (!_updating) { - _updating = true; - QMetaObject::invokeMethod(this, "doRequest", Qt::QueuedConnection); - } -} - -void StockModel::doRequest() -{ - /* - Fetch stock data from yahoo finance: - url: http://ichart.finance.yahoo.com/table.csv?s=NOK&a=5&b=11&c=2010&d=7&e=23&f=2010&g=d&ignore=.csv - s:stock name/id, a:start day, b:start month, c:start year default: 25 April 1995, oldest c= 1962 - d:end day, e:end month, f:end year, default:today (data only available 3 days before today) - g:data cycle(d daily, w weekly, m monthly, v Dividend) - */ - if (_manager && !_stockName.isEmpty() && _endDate > _startDate) { - QString query("http://ichart.finance.yahoo.com/table.csv?s=%1&a=%2&b=%3&c=%4&d=%5&e=%6&f=%7&g=%8&ignore=.csv"); - query = query.arg(_stockName) - .arg(_startDate.day()).arg(_startDate.month()).arg(_startDate.year()) - .arg(_endDate.day()).arg(_endDate.month()).arg(_endDate.year()) - .arg(dataCycleString()); - - qDebug() << "request stock data:" << query; - QNetworkReply* reply = _manager->get(QNetworkRequest(QUrl(query))); - connect(reply, SIGNAL(downloadProgress(qint64,qint64)), SIGNAL(downloadProgress(qint64,qint64))); - } -} - -void StockModel::update(QNetworkReply *reply) -{ - _updating = false; - - if (reply) { - if (reply->error() == QNetworkReply::NoError) { - beginResetModel(); - - foreach (StockPrice* p, _prices) { - p->deleteLater(); - } - - _prices.clear(); - - while (!reply->atEnd()) { - QString line = reply->readLine(); - QStringList fields = line.split(','); - - //data format:Date,Open,High,Low,Close,Volume,Adjusted close price - //example: 2011-06-24,6.03,6.04,5.88,5.88,20465200,5.88 - if (fields.size() == 7) { - StockPrice* price = new StockPrice(this); - price->setDate(QDate::fromString(fields[0], Qt::ISODate)); - price->setOpenPrice(fields[1].toFloat()); - price->setHighPrice(fields[2].toFloat()); - price->setLowPrice(fields[3].toFloat()); - price->setClosePrice(fields[4].toFloat()); - price->setVolume(fields[5].toInt()); - price->setAdjustedPrice(fields[6].toFloat()); - _prices.prepend(price); - } - } - qDebug() << "get stock data successfully, total:" << _prices.count() << "records."; - } else { - qDebug() << "get stock data failed:" << reply->errorString(); - } - reply->deleteLater(); - endResetModel(); - emit dataChanged(QModelIndex(), QModelIndex()); - } -} - -QVariant StockModel::data(const QModelIndex & index, int role) const { - if (index.row() < 0 || index.row() > _prices.count()) - return QVariant(); - - const StockPrice* price = _prices[index.row()]; - if (role == StockModel::DateRole) - return price->date(); - else if (role == StockModel::OpenPriceRole) - return price->openPrice(); - else if (role == StockModel::ClosePriceRole) - return price->closePrice(); - else if (role == StockModel::HighPriceRole) - return price->highPrice(); - else if (role == StockModel::LowPriceRole) - return price->lowPrice(); - else if (role == StockModel::AdjustedPriceRole) - return price->adjustedPrice(); - else if (role == StockModel::VolumeRole) - return price->volume(); - else if (role == StockModel::SectionRole) - return price->date().year(); - return QVariant(); -} - -QString StockModel::stockName() const -{ - return _stockName; -} -void StockModel::setStockName(const QString& name) -{ - if (_stockName != name) { - _stockName = name; - emit stockNameChanged(); - } -} - -QDate StockModel::startDate() const -{ - return _startDate; -} -void StockModel::setStartDate(const QDate& date) -{ - if (_startDate.isValid() && _startDate != date) { - _startDate = date; - emit startDateChanged(); - } -} - -QDate StockModel::endDate() const -{ - return _endDate; -} -void StockModel::setEndDate(const QDate& date) -{ - if (_endDate.isValid() && _endDate != date) { - _endDate = date; - emit endDateChanged(); - } -} - -StockModel::StockDataCycle StockModel::dataCycle() const -{ - return _dataCycle; -} - -QString StockModel::dataCycleString() const -{ - switch (_dataCycle) { - case StockModel::Daily: - return QString('d'); - break; - case StockModel::Weekly: - return QString('w'); - case StockModel::Monthly: - return QString('m'); - case StockModel::Dividend: - return QString('v'); - } - - return QString('d'); -} - - -void StockModel::setDataCycle(StockModel::StockDataCycle cycle) -{ - if (_dataCycle != cycle) { - _dataCycle = cycle; - emit dataCycleChanged(); - } -} |