qwasmcapturablewindows.cpp

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// Copyright (C) 2024 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#include "qwasmcapturablewindows_p.h"
#include "private/qcapturablewindow_p.h"
#include <QtCore/private/qstdweb_p.h>
#include <QGuiApplication>
#include <QWindow>
#include <QUuid>
 
#include <QDebug>
 
QT_BEGIN_NAMESPACE
 
QWasmCapturableWindows::QWasmCapturableWindows()
{
    m_capurableWindows.push_back(QCapturableWindowPrivate::create(
        static_cast<QCapturableWindowPrivate::Id>(111),
        QStringLiteral("Any Window")));
 
    getDisplayMedia();
}
 
QList<QCapturableWindow> QWasmCapturableWindows::windows() const
{
    return m_capurableWindows;
}
 
void QWasmCapturableWindows::getDisplayMedia()
{
// populate windows from getDisplayMedia which includes windows from host platform.
 
    emscripten::val navigator = emscripten::val::global("navigator");
    emscripten::val mediaDevices = navigator["mediaDevices"];
 
    if (mediaDevices.isNull() || mediaDevices.isUndefined()) {
        qWarning() << "No media devices found";
        return;
    }
 
    emscripten::val constraints = emscripten::val::object();
 
    constraints.set("video", true);
    constraints.set("selfBrowserSurface", std::string("include"));
 
    // will ask for permissions!
    qstdweb::PromiseCallbacks getDisplayMediaCallback{
        // default
        .thenFunc =
        [this](emscripten::val stream) {
            QUuid uid(QString::fromStdString(stream["id"].as<std::string>()));
 
            m_capurableWindows.push_back(QCapturableWindowPrivate::create(
                static_cast<QCapturableWindowPrivate::Id>(uid.toByteArray().toLong()),
                QString::fromStdString(stream["id"].as<std::string>())));
        },
        .catchFunc =
        [](emscripten::val) {
        }
    };
 
    qstdweb::Promise::make(mediaDevices, QStringLiteral("getDisplayMedia"),
                           std::move(getDisplayMediaCallback), constraints);
}
 
bool QWasmCapturableWindows::isWindowValid(const QCapturableWindowPrivate &) const
{
    return m_capurableWindows.count() > 0;
}
 
QT_END_NAMESPACE