diff options
Diffstat (limited to 'tests/manual/examples/widgets/itemviews/chart/mainwindow.cpp')
-rw-r--r-- | tests/manual/examples/widgets/itemviews/chart/mainwindow.cpp | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/tests/manual/examples/widgets/itemviews/chart/mainwindow.cpp b/tests/manual/examples/widgets/itemviews/chart/mainwindow.cpp new file mode 100644 index 0000000000..450f2e3a56 --- /dev/null +++ b/tests/manual/examples/widgets/itemviews/chart/mainwindow.cpp @@ -0,0 +1,136 @@ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#include "pieview.h" +#include "mainwindow.h" + +#include <QtWidgets> + +MainWindow::MainWindow(QWidget *parent) + : QMainWindow(parent) +{ + 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, &QAction::triggered, this, &MainWindow::openFile); + connect(saveAction, &QAction::triggered, this, &MainWindow::saveFile); + connect(quitAction, &QAction::triggered, qApp, &QCoreApplication::quit); + + menuBar()->addMenu(fileMenu); + statusBar(); + + loadFile(":/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 fileName = + QFileDialog::getOpenFileName(this, tr("Choose a data file"), "", "*.cht"); + if (!fileName.isEmpty()) + loadFile(fileName); +} + +void MainWindow::loadFile(const QString &fileName) +{ + QFile file(fileName); + if (!file.open(QFile::ReadOnly | QFile::Text)) + return; + + QTextStream stream(&file); + + model->removeRows(0, model->rowCount(QModelIndex()), QModelIndex()); + + int row = 0; + while (!stream.atEnd()) { + const QString line = stream.readLine(); + if (!line.isEmpty()) { + model->insertRows(row, 1, QModelIndex()); + + const QStringList pieces = line.split(QLatin1Char(','), Qt::SkipEmptyParts); + if (pieces.size() < 3) + continue; + 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++; + } + }; + + 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()) + return; + + QFile file(fileName); + if (!file.open(QFile::WriteOnly | QFile::Text)) + return; + + QTextStream stream(&file); + 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); +} |