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Diffstat (limited to 'sources/pyside2/doc/codesnippets/doc/src/snippets/modelview-subclasses/window.cpp')
-rw-r--r-- | sources/pyside2/doc/codesnippets/doc/src/snippets/modelview-subclasses/window.cpp | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/sources/pyside2/doc/codesnippets/doc/src/snippets/modelview-subclasses/window.cpp b/sources/pyside2/doc/codesnippets/doc/src/snippets/modelview-subclasses/window.cpp new file mode 100644 index 000000000..35af752ae --- /dev/null +++ b/sources/pyside2/doc/codesnippets/doc/src/snippets/modelview-subclasses/window.cpp @@ -0,0 +1,122 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the examples of PySide2. +** +** $QT_BEGIN_LICENSE:BSD$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** BSD License Usage +** Alternatively, 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." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QAction> +#include <QDataStream> +#include <QMenu> +#include <QMenuBar> +#include <QFile> +#include <QFileDialog> +#include <QListView> + +#include "window.h" + +MainWindow::MainWindow(QWidget *parent) + : QMainWindow(parent) +{ + setWindowTitle("Model/View example"); + + setupModelView(); + + QAction *openAction = new QAction(tr("&Open"), this); + QAction *quitAction = new QAction(tr("E&xit"), this); + QMenu *fileMenu = new QMenu(tr("&File"), this); + fileMenu->addAction(openAction); + fileMenu->addAction(quitAction); + menuBar()->addMenu(fileMenu); + + connect(openAction, SIGNAL(triggered()), this, SLOT(selectOpenFile())); + connect(quitAction, SIGNAL(triggered()), this, SLOT(close())); + + setCentralWidget(view); +} + +void MainWindow::setupModelView() +{ + model = new LinearModel(this); + view = new LinearView(this); + view->setModel(model); +} + +void MainWindow::selectOpenFile() +{ + QString fileName = QFileDialog::getOpenFileName(this, + tr("Select a file to open"), "", tr("Sound files (*.wav)")); + + if (!fileName.isEmpty()) + openFile(fileName); +} + +void MainWindow::openFile(const QString &fileName) +{ + QFile file(fileName); + int length = file.size(); + + if (file.open(QFile::ReadOnly)) { + model->removeRows(0, model->rowCount()); + + int rows = (length - 0x2c)/2; + model->insertRows(0, rows); + + // Perform some dodgy tricks to extract the data from the file. + QDataStream stream(&file); + stream.setByteOrder(QDataStream::LittleEndian); + + Q_INT16 left; + Q_INT16 right; + + for (int row = 0; row < rows; ++row) { + QModelIndex index = model->index(row); + + stream >> left >> right; + model->setData(index, int(left / 256)); + } + } +} |