1 files changed, 78 insertions, 0 deletions
diff --git a/tests/manual/wasm/localfonts/fontloading/main.cpp b/tests/manual/wasm/localfonts/fontloading/main.cpp
new file mode 100644
index 0000000000..3824c8b871
--- /dev/null
+++ b/tests/manual/wasm/localfonts/fontloading/main.cpp
@@ -0,0 +1,78 @@
+// Copyright (C) 2023 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
+
+#include <QtGui>
+#include <QtWidgets>
+
+#include <emscripten/bind.h>
+#include <emscripten/val.h>
+
+using namespace emscripten;
+
+class FontViewer : public QWidget
+{
+public:
+    FontViewer() {
+        QTextEdit *edit = new QTextEdit;
+        edit->setPlainText("The quick brown fox jumps over the lazy dog\nHow quickly daft jumping zebras vex\nPack my box with five dozen liquor jugs");
+
+        QComboBox *combo = new QComboBox;
+        combo->addItems(QFontDatabase::families());
+
+        connect(combo, &QComboBox::currentTextChanged, [=](const QString &family) {
+            QFont font(family);
+            edit->setFont(font);
+        });
+
+        QObject::connect(qApp, &QGuiApplication::fontDatabaseChanged, [=]() {
+            QStringList families = QFontDatabase::families();
+            combo->clear();
+            combo->addItems(families);
+        });
+
+        QLayout *layout = new QVBoxLayout;
+        layout->addWidget(edit);
+        layout->addWidget(combo);
+        setLayout(layout);
+    }
+};
+
+FontViewer *g_viewer = nullptr;
+QApplication *g_app = nullptr;
+
+void deleteapp() {
+    delete g_viewer;
+    delete g_app;
+};
+
+EMSCRIPTEN_BINDINGS(fonloading) {
+    function("deleteapp", &deleteapp);
+}
+
+int main(int argc, char **argv)
+{
+    qDebug() << "C++ main: Creating application";
+    g_app = new QApplication(argc, argv);
+
+    // Make sure there is one call to fontFamiliesLoaded at startup,
+    // even if no further fonts are loaded.
+    QTimer::singleShot(0, [=]() {
+        emscripten::val window = emscripten::val::global("window");
+        window.call<void>("fontFamiliesLoaded", QFontDatabase::families().count());
+    });
+
+    g_viewer = new FontViewer();
+    g_viewer->show();
+
+    QObject::connect(g_app, &QGuiApplication::fontDatabaseChanged, [=]() {
+        QStringList families = QFontDatabase::families();
+
+        emscripten::val window = emscripten::val::global("window");
+
+        window.call<void>("fontFamiliesLoaded", families.count());
+        for (int i = 0; i < families.count(); ++i) {
+            window.call<void>("fontFamilyLoaded", families[i].toStdString());
+        }
+    });
+}
+