1 files changed, 214 insertions, 0 deletions
diff --git a/tests/manual/examples/widgets/itemviews/pixelator/mainwindow.cpp b/tests/manual/examples/widgets/itemviews/pixelator/mainwindow.cpp
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+++ b/tests/manual/examples/widgets/itemviews/pixelator/mainwindow.cpp
@@ -0,0 +1,214 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include "mainwindow.h"
+#include "imagemodel.h"
+#include "pixeldelegate.h"
+
+#include <QtWidgets>
+#if defined(QT_PRINTSUPPORT_LIB)
+#include <QtPrintSupport/qtprintsupportglobal.h>
+#if QT_CONFIG(printdialog)
+#include <QPrinter>
+#include <QPrintDialog>
+#endif
+#endif
+
+//! [0]
+MainWindow::MainWindow()
+{
+//! [0]
+    currentPath = QDir::homePath();
+    model = new ImageModel(this);
+
+    QWidget *centralWidget = new QWidget;
+
+//! [1]
+    view = new QTableView;
+    view->setShowGrid(false);
+    view->horizontalHeader()->hide();
+    view->verticalHeader()->hide();
+    view->horizontalHeader()->setMinimumSectionSize(1);
+    view->verticalHeader()->setMinimumSectionSize(1);
+    view->setModel(model);
+//! [1]
+
+//! [2]
+    PixelDelegate *delegate = new PixelDelegate(this);
+    view->setItemDelegate(delegate);
+//! [2]
+
+//! [3]
+    QLabel *pixelSizeLabel = new QLabel(tr("Pixel size:"));
+    QSpinBox *pixelSizeSpinBox = new QSpinBox;
+    pixelSizeSpinBox->setMinimum(4);
+    pixelSizeSpinBox->setMaximum(32);
+    pixelSizeSpinBox->setValue(12);
+//! [3]
+
+    QMenu *fileMenu = new QMenu(tr("&File"), this);
+    QAction *openAction = fileMenu->addAction(tr("&Open..."));
+    openAction->setShortcuts(QKeySequence::Open);
+
+    printAction = fileMenu->addAction(tr("&Print..."));
+    printAction->setEnabled(false);
+    printAction->setShortcut(QKeySequence::Print);
+
+    QAction *quitAction = fileMenu->addAction(tr("E&xit"));
+    quitAction->setShortcuts(QKeySequence::Quit);
+
+    QMenu *helpMenu = new QMenu(tr("&Help"), this);
+    QAction *aboutAction = helpMenu->addAction(tr("&About"));
+
+    menuBar()->addMenu(fileMenu);
+    menuBar()->addSeparator();
+    menuBar()->addMenu(helpMenu);
+
+    connect(openAction, &QAction::triggered, this, &MainWindow::chooseImage);
+    connect(printAction, &QAction::triggered, this, &MainWindow::printImage);
+    connect(quitAction, &QAction::triggered, qApp, &QCoreApplication::quit);
+    connect(aboutAction, &QAction::triggered, this, &MainWindow::showAboutBox);
+//! [4]
+    connect(pixelSizeSpinBox, &QSpinBox::valueChanged,
+            delegate, &PixelDelegate::setPixelSize);
+    connect(pixelSizeSpinBox, &QSpinBox::valueChanged,
+            this, &MainWindow::updateView);
+//! [4]
+
+    QHBoxLayout *controlsLayout = new QHBoxLayout;
+    controlsLayout->addWidget(pixelSizeLabel);
+    controlsLayout->addWidget(pixelSizeSpinBox);
+    controlsLayout->addStretch(1);
+
+    QVBoxLayout *mainLayout = new QVBoxLayout;
+    mainLayout->addWidget(view);
+    mainLayout->addLayout(controlsLayout);
+    centralWidget->setLayout(mainLayout);
+
+    setCentralWidget(centralWidget);
+
+    setWindowTitle(tr("Pixelator"));
+    resize(640, 480);
+//! [5]
+}
+//! [5]
+
+void MainWindow::chooseImage()
+{
+    QString fileName = QFileDialog::getOpenFileName(this,
+        tr("Choose an image"), currentPath, "*");
+
+    if (!fileName.isEmpty())
+        openImage(fileName);
+}
+
+void MainWindow::openImage(const QString &fileName)
+{
+    QImage image;
+
+    if (image.load(fileName)) {
+        model->setImage(image);
+        if (!fileName.startsWith(":/")) {
+            currentPath = fileName;
+            setWindowTitle(tr("%1 - Pixelator").arg(currentPath));
+        }
+
+        printAction->setEnabled(true);
+        updateView();
+    }
+}
+
+void MainWindow::printImage()
+{
+#if defined(QT_PRINTSUPPORT_LIB) && QT_CONFIG(printdialog)
+    if (model->rowCount(QModelIndex())*model->columnCount(QModelIndex()) > 90000) {
+        QMessageBox::StandardButton answer;
+        answer = QMessageBox::question(this, tr("Large Image Size"),
+                tr("The printed image may be very large. Are you sure that "
+                   "you want to print it?"),
+        QMessageBox::Yes | QMessageBox::No);
+        if (answer == QMessageBox::No)
+            return;
+    }
+
+    QPrinter printer(QPrinter::HighResolution);
+
+    QPrintDialog dlg(&printer, this);
+    dlg.setWindowTitle(tr("Print Image"));
+
+    if (dlg.exec() != QDialog::Accepted) {
+        return;
+    }
+
+    QPainter painter;
+    painter.begin(&printer);
+
+    int rows = model->rowCount(QModelIndex());
+    int columns = model->columnCount(QModelIndex());
+    int sourceWidth = (columns + 1) * ItemSize;
+    int sourceHeight = (rows + 1) * ItemSize;
+
+    painter.save();
+
+    double xscale = printer.pageRect(QPrinter::DevicePixel).width() / double(sourceWidth);
+    double yscale = printer.pageRect(QPrinter::DevicePixel).height() / double(sourceHeight);
+    double scale = qMin(xscale, yscale);
+
+    painter.translate(printer.paperRect(QPrinter::DevicePixel).x() + printer.pageRect(QPrinter::DevicePixel).width() / 2,
+                      printer.paperRect(QPrinter::DevicePixel).y() + printer.pageRect(QPrinter::DevicePixel).height() / 2);
+    painter.scale(scale, scale);
+    painter.translate(-sourceWidth / 2, -sourceHeight / 2);
+
+    QStyleOptionViewItem option;
+    QModelIndex parent = QModelIndex();
+
+    QProgressDialog progress(tr("Printing..."), tr("Cancel"), 0, rows, this);
+    progress.setWindowModality(Qt::ApplicationModal);
+    float y = ItemSize / 2;
+
+    for (int row = 0; row < rows; ++row) {
+        progress.setValue(row);
+        qApp->processEvents();
+        if (progress.wasCanceled())
+            break;
+
+        float x = ItemSize / 2;
+
+        for (int column = 0; column < columns; ++column) {
+            option.rect = QRect(int(x), int(y), ItemSize, ItemSize);
+            view->itemDelegate()->paint(&painter, option,
+                                        model->index(row, column, parent));
+            x = x + ItemSize;
+        }
+        y = y + ItemSize;
+    }
+    progress.setValue(rows);
+
+    painter.restore();
+    painter.end();
+
+    if (progress.wasCanceled()) {
+        QMessageBox::information(this, tr("Printing canceled"),
+            tr("The printing process was canceled."), QMessageBox::Cancel);
+    }
+#else
+    QMessageBox::information(this, tr("Printing canceled"),
+        tr("Printing is not supported on this Qt build"), QMessageBox::Cancel);
+#endif
+}
+
+void MainWindow::showAboutBox()
+{
+    QMessageBox::about(this, tr("About the Pixelator example"),
+        tr("This example demonstrates how a standard view and a custom\n"
+           "delegate can be used to produce a specialized representation\n"
+           "of data in a simple custom model."));
+}
+
+//! [6]
+void MainWindow::updateView()
+{
+    view->resizeColumnsToContents();
+    view->resizeRowsToContents();
+}
+//! [6]