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Diffstat (limited to 'examples/itemviews/chart/mainwindow.cpp')
| -rw-r--r-- | examples/itemviews/chart/mainwindow.cpp | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/examples/itemviews/chart/mainwindow.cpp b/examples/itemviews/chart/mainwindow.cpp new file mode 100644 index 0000000000..df6f01abc2 --- /dev/null +++ b/examples/itemviews/chart/mainwindow.cpp @@ -0,0 +1,172 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** 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 <QtGui> + +#include "pieview.h" +#include "mainwindow.h" + +MainWindow::MainWindow() +{ + QMenu *fileMenu = new QMenu(tr("&File"), this); + QAction *openAction = fileMenu->addAction(tr("&Open...")); + openAction->setShortcuts(QKeySequence::Open); + QAction *saveAction = fileMenu->addAction(tr("&Save As...")); + saveAction->setShortcuts(QKeySequence::SaveAs); + QAction *quitAction = fileMenu->addAction(tr("E&xit")); + quitAction->setShortcuts(QKeySequence::Quit); + + setupModel(); + setupViews(); + + connect(openAction, SIGNAL(triggered()), this, SLOT(openFile())); + connect(saveAction, SIGNAL(triggered()), this, SLOT(saveFile())); + connect(quitAction, SIGNAL(triggered()), qApp, SLOT(quit())); + + menuBar()->addMenu(fileMenu); + statusBar(); + + openFile(":/Charts/qtdata.cht"); + + setWindowTitle(tr("Chart")); + resize(870, 550); +} + +void MainWindow::setupModel() +{ + model = new QStandardItemModel(8, 2, this); + model->setHeaderData(0, Qt::Horizontal, tr("Label")); + model->setHeaderData(1, Qt::Horizontal, tr("Quantity")); +} + +void MainWindow::setupViews() +{ + QSplitter *splitter = new QSplitter; + QTableView *table = new QTableView; + pieChart = new PieView; + splitter->addWidget(table); + splitter->addWidget(pieChart); + splitter->setStretchFactor(0, 0); + splitter->setStretchFactor(1, 1); + + table->setModel(model); + pieChart->setModel(model); + + QItemSelectionModel *selectionModel = new QItemSelectionModel(model); + table->setSelectionModel(selectionModel); + pieChart->setSelectionModel(selectionModel); + + QHeaderView *headerView = table->horizontalHeader(); + headerView->setStretchLastSection(true); + + setCentralWidget(splitter); +} + +void MainWindow::openFile(const QString &path) +{ + QString fileName; + if (path.isNull()) + fileName = QFileDialog::getOpenFileName(this, tr("Choose a data file"), + "", "*.cht"); + else + fileName = path; + + if (!fileName.isEmpty()) { + QFile file(fileName); + + if (file.open(QFile::ReadOnly | QFile::Text)) { + QTextStream stream(&file); + QString line; + + model->removeRows(0, model->rowCount(QModelIndex()), QModelIndex()); + + int row = 0; + do { + line = stream.readLine(); + if (!line.isEmpty()) { + + model->insertRows(row, 1, QModelIndex()); + + QStringList pieces = line.split(",", QString::SkipEmptyParts); + model->setData(model->index(row, 0, QModelIndex()), + pieces.value(0)); + model->setData(model->index(row, 1, QModelIndex()), + pieces.value(1)); + model->setData(model->index(row, 0, QModelIndex()), + QColor(pieces.value(2)), Qt::DecorationRole); + row++; + } + } while (!line.isEmpty()); + + file.close(); + statusBar()->showMessage(tr("Loaded %1").arg(fileName), 2000); + } + } +} + +void MainWindow::saveFile() +{ + QString fileName = QFileDialog::getSaveFileName(this, + tr("Save file as"), "", "*.cht"); + + if (!fileName.isEmpty()) { + QFile file(fileName); + QTextStream stream(&file); + + if (file.open(QFile::WriteOnly | QFile::Text)) { + for (int row = 0; row < model->rowCount(QModelIndex()); ++row) { + + QStringList pieces; + + pieces.append(model->data(model->index(row, 0, QModelIndex()), + Qt::DisplayRole).toString()); + pieces.append(model->data(model->index(row, 1, QModelIndex()), + Qt::DisplayRole).toString()); + pieces.append(model->data(model->index(row, 0, QModelIndex()), + Qt::DecorationRole).toString()); + + stream << pieces.join(",") << "\n"; + } + } + + file.close(); + statusBar()->showMessage(tr("Saved %1").arg(fileName), 2000); + } +} |