Adds qt migration example

qt5-before/qt5-legacy-migration-benchmark/MainWindow.cpp

@@ -0,0 +1,53 @@
+#include "MainWindow.h"
+#include "ui_MainWindow.h"
+
+#include <QApplication>
+#include <QDesktopWidget>
+#include <QTextCodec>
+#include <QPixmap>
+#include <QString>
+#include <QRect>
+
+MainWindow::MainWindow(QWidget *parent)
+    : QMainWindow(parent)
+    , ui(new Ui::MainWindow)
+    , legacyPattern("^[A-Za-z]+\\d+$")
+{
+    ui->setupUi(this);
+
+    QTextCodec *codec = QTextCodec::codecForName("UTF-8");
+    QString title = codec->toUnicode("Qt5 Legacy Migration Benchmark");
+    setWindowTitle(title);
+
+    ui->label->setText(codec->toUnicode("Bitte Text wie Test123 eingeben."));
+    ui->iconLabel->setPixmap(QPixmap(":/icons/app.png").scaled(48, 48));
+
+    connect(ui->validateButton, SIGNAL(clicked()), this, SLOT(onValidateClicked()));
+    connect(ui->screenButton, SIGNAL(clicked()), this, SLOT(onScreenInfoClicked()));
+}
+
+MainWindow::~MainWindow()
+{
+    delete ui;
+}
+
+void MainWindow::onValidateClicked()
+{
+    QString text = ui->lineEdit->text();
+
+    if (legacyPattern.exactMatch(text)) {
+        ui->resultLabel->setText("Match");
+    } else {
+        ui->resultLabel->setText("No match");
+    }
+}
+
+void MainWindow::onScreenInfoClicked()
+{
+    QRect screenGeometry = QApplication::desktop()->screenGeometry();
+    QString info = QString("Screen: %1x%2")
+        .arg(screenGeometry.width())
+        .arg(screenGeometry.height());
+
+    ui->resultLabel->setText(info);
+}