1 files changed, 86 insertions, 0 deletions
diff --git a/tests/manual/textrendering/fontenginecomparison/mainwindow.cpp b/tests/manual/textrendering/fontenginecomparison/mainwindow.cpp
new file mode 100644
index 00000000000..24123316851
--- /dev/null
+++ b/tests/manual/textrendering/fontenginecomparison/mainwindow.cpp
@@ -0,0 +1,86 @@
+// Copyright (C) 2025 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
+
+#include "mainwindow.h"
+#include "ui_mainwindow.h"
+
+#include <QProcess>
+
+MainWindow::MainWindow(QWidget *parent)
+    : QMainWindow(parent)
+    , ui(new Ui::MainWindow)
+{
+    ui->setupUi(this);
+
+
+    ui->cbWeight->addItem(QStringLiteral("Thin"), QFont::Thin);
+    ui->cbWeight->addItem(QStringLiteral("ExtraLight"), QFont::ExtraLight);
+    ui->cbWeight->addItem(QStringLiteral("Light"), QFont::Light);
+    ui->cbWeight->addItem(QStringLiteral("Normal"), QFont::Normal);
+    ui->cbWeight->addItem(QStringLiteral("Medium"), QFont::Medium);
+    ui->cbWeight->addItem(QStringLiteral("DemiBold"), QFont::DemiBold);
+    ui->cbWeight->addItem(QStringLiteral("Bold"), QFont::Bold);
+    ui->cbWeight->addItem(QStringLiteral("ExtraBold"), QFont::ExtraBold);
+    ui->cbWeight->addItem(QStringLiteral("Black"), QFont::Black);
+    ui->cbWeight->setCurrentIndex(3);
+
+    updateFont();
+
+    connect(ui->sbPixelSize, &QSpinBox::valueChanged, this, &MainWindow::updateFont);
+    connect(ui->fontComboBox, &QFontComboBox::currentFontChanged, this, &MainWindow::updateFont);
+    connect(ui->rbDefault, &QRadioButton::toggled, this, &MainWindow::updateFont);
+    connect(ui->rbGdi, &QRadioButton::toggled, this, &MainWindow::updateFont);
+    connect(ui->rbFreetype, &QRadioButton::toggled, this, &MainWindow::updateFont);
+    connect(ui->leText, &QLineEdit::textChanged, this, &MainWindow::updateFont);
+    connect(ui->cbWeight, &QComboBox::currentIndexChanged, this, &MainWindow::updateFont);
+    connect(ui->cbItalic, &QCheckBox::toggled, this, &MainWindow::updateFont);
+}
+
+MainWindow::~MainWindow()
+{
+    delete ui;
+}
+
+void MainWindow::updateImage()
+{
+    if (m_process == nullptr)
+        return;
+
+    QImage img(QStringLiteral("output.png"));
+    if (!img.isNull())
+        ui->lImage->setPixmap(QPixmap::fromImage(img));
+}
+
+void MainWindow::updateFont()
+{
+    if (m_process == nullptr) {
+        m_process = new QProcess;
+        connect(m_process, &QProcess::finished, this, &MainWindow::updateImage);
+    }
+
+    if (m_process->isOpen())
+        m_process->close();
+
+    QString fontEngineName = QStringLiteral("directwrite");
+    if (ui->rbGdi->isChecked())
+        fontEngineName = QStringLiteral("gdi");
+    else if (ui->rbFreetype->isChecked())
+        fontEngineName = QStringLiteral("freetype");
+
+    QProcessEnvironment env;
+    env.insert(QStringLiteral("QT_QPA_PLATFORM"), QStringLiteral("windows:fontengine=%1").arg(fontEngineName));
+    env.insert(QStringLiteral("windir"), qgetenv("windir"));
+    m_process->setProcessEnvironment(env);
+
+    QStringList args;
+    args.append(ui->fontComboBox->currentFont().family());
+    args.append(QString::number(ui->sbPixelSize->value()));
+    args.append(ui->leText->text().isEmpty()
+                    ? QStringLiteral("The quick brown fox jumps over the lazy dog")
+                    : ui->leText->text());
+    args.append(QString::number(ui->cbWeight->currentData().toInt()));
+    args.append(QString::number(int(ui->cbItalic->isChecked())));
+
+    m_process->start(qApp->arguments().first(), args);
+    m_process->waitForFinished();
+}