1 files changed, 282 insertions, 0 deletions
diff --git a/tests/manual/examples/widgets/tools/plugandpaint/app/mainwindow.cpp b/tests/manual/examples/widgets/tools/plugandpaint/app/mainwindow.cpp
new file mode 100644
index 0000000000..8e58ae4ba8
--- /dev/null
+++ b/tests/manual/examples/widgets/tools/plugandpaint/app/mainwindow.cpp
@@ -0,0 +1,282 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+
+#include "mainwindow.h"
+#include "interfaces.h"
+#include "paintarea.h"
+#include "plugindialog.h"
+
+#include <QAction>
+#include <QActionGroup>
+#include <QApplication>
+#include <QColorDialog>
+#include <QFileDialog>
+#include <QInputDialog>
+#include <QMenu>
+#include <QMenuBar>
+#include <QMessageBox>
+#include <QPluginLoader>
+#include <QScrollArea>
+#include <QTimer>
+
+MainWindow::MainWindow() : paintArea(new PaintArea)
+    , scrollArea(new QScrollArea)
+{
+    scrollArea->setBackgroundRole(QPalette::Dark);
+    scrollArea->setWidget(paintArea);
+    setCentralWidget(scrollArea);
+
+    createActions();
+    createMenus();
+    loadPlugins();
+
+    setWindowTitle(tr("Plug & Paint"));
+
+    if (!brushActionGroup->actions().isEmpty())
+        brushActionGroup->actions().first()->trigger();
+
+    QTimer::singleShot(500, this, &MainWindow::aboutPlugins);
+}
+
+void MainWindow::open()
+{
+    const QString fileName = QFileDialog::getOpenFileName(this,
+                                                          tr("Open File"),
+                                                          QDir::currentPath());
+    if (!fileName.isEmpty()) {
+        if (!paintArea->openImage(fileName)) {
+            QMessageBox::information(this, tr("Plug & Paint"),
+                                     tr("Cannot load %1.").arg(fileName));
+            return;
+        }
+        paintArea->adjustSize();
+    }
+}
+
+bool MainWindow::saveAs()
+{
+    const QString initialPath = QDir::currentPath() + "/untitled.png";
+
+    const QString fileName = QFileDialog::getSaveFileName(this, tr("Save As"),
+                                                          initialPath);
+    if (fileName.isEmpty())
+        return false;
+
+    return paintArea->saveImage(fileName, "png");
+}
+
+void MainWindow::brushColor()
+{
+    const QColor newColor = QColorDialog::getColor(paintArea->brushColor());
+    if (newColor.isValid())
+        paintArea->setBrushColor(newColor);
+}
+
+void MainWindow::brushWidth()
+{
+    bool ok;
+    const int newWidth = QInputDialog::getInt(this, tr("Plug & Paint"),
+                                              tr("Select brush width:"),
+                                              paintArea->brushWidth(),
+                                              1, 50, 1, &ok);
+    if (ok)
+        paintArea->setBrushWidth(newWidth);
+}
+
+//! [0]
+void MainWindow::changeBrush()
+{
+    auto action = qobject_cast<QAction *>(sender());
+    if (!action)
+      return;
+    auto iBrush = qobject_cast<BrushInterface *>(action->parent());
+    if (!iBrush)
+      return;
+    const QString brush = action->text();
+
+    paintArea->setBrush(iBrush, brush);
+}
+//! [0]
+
+//! [1]
+void MainWindow::insertShape()
+{
+    auto action = qobject_cast<QAction *>(sender());
+    if (!action)
+      return;
+    auto iShape = qobject_cast<ShapeInterface *>(action->parent());
+    if (!iShape)
+      return;
+
+    const QPainterPath path = iShape->generateShape(action->text(), this);
+    if (!path.isEmpty())
+        paintArea->insertShape(path);
+}
+//! [1]
+
+//! [2]
+void MainWindow::applyFilter()
+{
+    auto action = qobject_cast<QAction *>(sender());
+    if (!action)
+      return;
+    auto iFilter = qobject_cast<FilterInterface *>(action->parent());
+    if (!iFilter)
+      return;
+
+    const QImage image = iFilter->filterImage(action->text(), paintArea->image(),
+                                              this);
+    paintArea->setImage(image);
+}
+//! [2]
+
+void MainWindow::about()
+{
+   QMessageBox::about(this, tr("About Plug & Paint"),
+            tr("The <b>Plug & Paint</b> example demonstrates how to write Qt "
+               "applications that can be extended through plugins."));
+}
+
+//! [3]
+void MainWindow::aboutPlugins()
+{
+    PluginDialog dialog(pluginsDir.path(), pluginFileNames, this);
+    dialog.exec();
+}
+//! [3]
+
+void MainWindow::createActions()
+{
+    openAct = new QAction(tr("&Open..."), this);
+    openAct->setShortcuts(QKeySequence::Open);
+    connect(openAct, &QAction::triggered, this, &MainWindow::open);
+
+    saveAsAct = new QAction(tr("&Save As..."), this);
+    saveAsAct->setShortcuts(QKeySequence::SaveAs);
+    connect(saveAsAct, &QAction::triggered, this, &MainWindow::saveAs);
+
+    exitAct = new QAction(tr("E&xit"), this);
+    exitAct->setShortcuts(QKeySequence::Quit);
+    connect(exitAct, &QAction::triggered, this, &MainWindow::close);
+
+    brushColorAct = new QAction(tr("&Brush Color..."), this);
+    connect(brushColorAct, &QAction::triggered, this, &MainWindow::brushColor);
+
+    brushWidthAct = new QAction(tr("&Brush Width..."), this);
+    connect(brushWidthAct, &QAction::triggered, this, &MainWindow::brushWidth);
+
+    brushActionGroup = new QActionGroup(this);
+
+    aboutAct = new QAction(tr("&About"), this);
+    connect(aboutAct, &QAction::triggered, this, &MainWindow::about);
+
+    aboutQtAct = new QAction(tr("About &Qt"), this);
+    connect(aboutQtAct, &QAction::triggered, qApp, &QApplication::aboutQt);
+
+    aboutPluginsAct = new QAction(tr("About &Plugins"), this);
+    connect(aboutPluginsAct, &QAction::triggered, this, &MainWindow::aboutPlugins);
+}
+
+void MainWindow::createMenus()
+{
+    fileMenu = menuBar()->addMenu(tr("&File"));
+    fileMenu->addAction(openAct);
+    fileMenu->addAction(saveAsAct);
+    fileMenu->addSeparator();
+    fileMenu->addAction(exitAct);
+
+    brushMenu = menuBar()->addMenu(tr("&Brush"));
+    brushMenu->addAction(brushColorAct);
+    brushMenu->addAction(brushWidthAct);
+    brushMenu->addSeparator();
+
+    shapesMenu = menuBar()->addMenu(tr("&Shapes"));
+
+    filterMenu = menuBar()->addMenu(tr("&Filter"));
+
+    menuBar()->addSeparator();
+
+    helpMenu = menuBar()->addMenu(tr("&Help"));
+    helpMenu->addAction(aboutAct);
+    helpMenu->addAction(aboutQtAct);
+    helpMenu->addAction(aboutPluginsAct);
+}
+
+//! [4]
+void MainWindow::loadPlugins()
+{
+    const auto staticInstances = QPluginLoader::staticInstances();
+    for (QObject *plugin : staticInstances)
+        populateMenus(plugin);
+//! [4] //! [5]
+
+    pluginsDir = QDir(QCoreApplication::applicationDirPath());
+
+#if defined(Q_OS_WIN)
+    if (pluginsDir.dirName().toLower() == "debug" || pluginsDir.dirName().toLower() == "release")
+        pluginsDir.cdUp();
+#elif defined(Q_OS_MAC)
+    if (pluginsDir.dirName() == "MacOS") {
+        pluginsDir.cdUp();
+        pluginsDir.cdUp();
+        pluginsDir.cdUp();
+    }
+#endif
+    pluginsDir.cd("plugins");
+//! [5]
+
+//! [6]
+    const auto entryList = pluginsDir.entryList(QDir::Files);
+    for (const QString &fileName : entryList) {
+        QPluginLoader loader(pluginsDir.absoluteFilePath(fileName));
+        QObject *plugin = loader.instance();
+        if (plugin) {
+            populateMenus(plugin);
+            pluginFileNames += fileName;
+//! [6] //! [7]
+        }
+//! [7] //! [8]
+    }
+//! [8]
+
+//! [9]
+    brushMenu->setEnabled(!brushActionGroup->actions().isEmpty());
+    shapesMenu->setEnabled(!shapesMenu->actions().isEmpty());
+    filterMenu->setEnabled(!filterMenu->actions().isEmpty());
+}
+//! [9]
+
+//! [10]
+void MainWindow::populateMenus(QObject *plugin)
+{
+    auto iBrush = qobject_cast<BrushInterface *>(plugin);
+    if (iBrush)
+        addToMenu(plugin, iBrush->brushes(), brushMenu, &MainWindow::changeBrush,
+                  brushActionGroup);
+
+    auto iShape = qobject_cast<ShapeInterface *>(plugin);
+    if (iShape)
+        addToMenu(plugin, iShape->shapes(), shapesMenu, &MainWindow::insertShape);
+
+    auto iFilter = qobject_cast<FilterInterface *>(plugin);
+    if (iFilter)
+        addToMenu(plugin, iFilter->filters(), filterMenu, &MainWindow::applyFilter);
+}
+//! [10]
+
+void MainWindow::addToMenu(QObject *plugin, const QStringList &texts,
+                           QMenu *menu, Member member,
+                           QActionGroup *actionGroup)
+{
+    for (const QString &text : texts) {
+        auto action = new QAction(text, plugin);
+        connect(action, &QAction::triggered, this, member);
+        menu->addAction(action);
+
+        if (actionGroup) {
+            action->setCheckable(true);
+            actionGroup->addAction(action);
+        }
+    }
+}