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Viewing changes to examples/itemviews/chart/mainwindow.cpp

  • Committer: Bazaar Package Importer
  • Author(s): Adam Conrad
  • Date: 2005-08-24 04:09:09 UTC
  • Revision ID: james.westby@ubuntu.com-20050824040909-xmxe9jfr4a0w5671
Tags: upstream-4.0.0
Import upstream version 4.0.0

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examples/itemviews/chart/mainwindow.cpp
 
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/****************************************************************************
 
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**
 
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** Copyright (C) 2004-2005 Trolltech AS. All rights reserved.
 
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**
 
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** This file is part of the example classes of the Qt Toolkit.
 
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**
 
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** This file may be distributed under the terms of the Q Public License
 
8
** as defined by Trolltech AS of Norway and appearing in the file
 
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** LICENSE.QPL included in the packaging of this file.
 
10
**
 
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** This file may be distributed and/or modified under the terms of the
 
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** GNU General Public License version 2 as published by the Free Software
 
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** Foundation and appearing in the file LICENSE.GPL included in the
 
14
** packaging of this file.
 
15
**
 
16
** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
 
17
**   information about Qt Commercial License Agreements.
 
18
** See http://www.trolltech.com/qpl/ for QPL licensing information.
 
19
** See http://www.trolltech.com/gpl/ for GPL licensing information.
 
20
**
 
21
** Contact info@trolltech.com if any conditions of this licensing are
 
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** not clear to you.
 
23
**
 
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** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 
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** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 
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**
 
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****************************************************************************/
 
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/*
 
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  mainwindow.cpp
 
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  A minimal subclass of QTableView with slots to allow the selection model
 
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  to be monitored.
 
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*/
 
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#include <QtGui>
 
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#include "pieview.h"
 
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#include "mainwindow.h"
 
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MainWindow::MainWindow()
 
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{
 
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    QMenu *fileMenu = new QMenu(tr("&File"), this);
 
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    QAction *openAction = fileMenu->addAction(tr("&Open"));
 
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    openAction->setShortcut(QKeySequence(tr("Ctrl+O")));
 
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    QAction *saveAction = fileMenu->addAction(tr("&Save"));
 
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    saveAction->setShortcut(QKeySequence(tr("Ctrl+S")));
 
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    QAction *quitAction = fileMenu->addAction(tr("E&xit"));
 
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    quitAction->setShortcut(QKeySequence(tr("Ctrl+Q")));
 
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    setupModel();
 
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    setupViews();
 
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    connect(openAction, SIGNAL(triggered()), this, SLOT(openFile()));
 
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    connect(saveAction, SIGNAL(triggered()), this, SLOT(saveFile()));
 
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    connect(quitAction, SIGNAL(triggered()), qApp, SLOT(quit()));
 
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    menuBar()->addMenu(fileMenu);
 
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    statusBar();
 
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    openFile(":/Charts/qtdata.cht");
 
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    setWindowTitle(tr("Chart"));
 
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    resize(640, 480);
 
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}
 
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void MainWindow::setupModel()
 
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{
 
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    model = new QStandardItemModel(8, 2, this);
 
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    model->setHeaderData(0, Qt::Horizontal, tr("Label"));
 
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    model->setHeaderData(1, Qt::Horizontal, tr("Quantity"));
 
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}
 
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void MainWindow::setupViews()
 
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{
 
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    QSplitter *splitter = new QSplitter;
 
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    QTableView *table = new QTableView;
 
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    pieChart = new PieView;
 
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    splitter->addWidget(table);
 
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    splitter->addWidget(pieChart);
 
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    splitter->setStretchFactor(0, 0);
 
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    splitter->setStretchFactor(1, 1);
 
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    table->setModel(model);
 
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    pieChart->setModel(model);
 
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    QItemSelectionModel *selectionModel = new QItemSelectionModel(model);
 
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    table->setSelectionModel(selectionModel);
 
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    pieChart->setSelectionModel(selectionModel);
 
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    setCentralWidget(splitter);
 
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}
 
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void MainWindow::openFile(const QString &path)
 
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{
 
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    QString fileName;
 
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    if (path.isNull())
 
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        fileName = QFileDialog::getOpenFileName(this, tr("Choose a data file"),
 
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                                                "", "*.cht");
 
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    else
 
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        fileName = path;
 
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    if (!fileName.isEmpty()) {
 
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        QFile file(fileName);
 
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        if (file.open(QFile::ReadOnly | QFile::Text)) {
 
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            QTextStream stream(&file);
 
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            QString line;
 
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            model->removeRows(0, model->rowCount(QModelIndex()), QModelIndex());
 
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            int row = 0;
 
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            do {
 
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                line = stream.readLine();
 
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                if (!line.isEmpty()) {
 
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                    model->insertRows(row, 1, QModelIndex());
 
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                    QStringList pieces = line.split(",", QString::SkipEmptyParts);
 
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                    model->setData(model->index(row, 0, QModelIndex()),
 
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                                   pieces.value(0));
 
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                    model->setData(model->index(row, 1, QModelIndex()),
 
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                                   pieces.value(1));
 
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                    model->setData(model->index(row, 0, QModelIndex()),
 
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                                   QColor(pieces.value(2)), Qt::DecorationRole);
 
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                    row++;
 
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                }
 
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            } while (!line.isEmpty());
 
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            file.close();
 
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            statusBar()->showMessage(tr("Loaded %1").arg(fileName), 2000);
 
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        }
 
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    }
 
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}
 
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void MainWindow::saveFile()
 
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{
 
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    QString fileName = QFileDialog::getSaveFileName(this,
 
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        tr("Save file as"), "", "*.cht");
 
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    if (!fileName.isEmpty()) {
 
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        QFile file(fileName);
 
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        QTextStream stream(&file);
 
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        if (file.open(QFile::WriteOnly | QFile::Text)) {
 
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            for (int row = 0; row < model->rowCount(QModelIndex()); ++row) {
 
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                QStringList pieces;
 
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                pieces.append(model->data(model->index(row, 0, QModelIndex()),
 
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                                          Qt::DisplayRole).toString());
 
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                pieces.append(model->data(model->index(row, 1, QModelIndex()),
 
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                                          Qt::DisplayRole).toString());
 
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                pieces.append(model->data(model->index(row, 0, QModelIndex()),
 
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                                          Qt::DecorationRole).toString());
 
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                stream << pieces.join(",") << "\n";
 
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            }
 
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        }
 
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        file.close();
 
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        statusBar()->showMessage(tr("Saved %1").arg(fileName), 2000);
 
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    }
 
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}