QtServiceEmbeddedDelegate.java

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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
 
package org.qtproject.qt.android;
 
import static org.qtproject.qt.android.QtNative.ApplicationState.ApplicationSuspended;
 
import android.app.Service;
import android.content.res.Resources;
import android.util.DisplayMetrics;
 
import java.util.HashSet;

class QtServiceEmbeddedDelegate implements QtEmbeddedViewInterface, QtNative.AppStateDetailsListener
{
    private final Service m_service;
    private final HashSet<QtView> m_views = new HashSet<>();
 
    QtServiceEmbeddedDelegate(Service service)
    {
        m_service = service;
        QtNative.registerAppStateListener(this);
        QtNative.setService(service);
        // QTBUG-122920 TODO Implement accessibility for service UIs
        // QTBUG-122552 TODO Implement text input
    }
 
    @Override
    public void onNativePluginIntegrationReadyChanged(boolean ready)
    {
        synchronized (this) {
            if (ready) {
                QtNative.runAction(() -> {
                    final DisplayMetrics metrics = Resources.getSystem().getDisplayMetrics();
 
                    final int maxWidth = metrics.widthPixels;
                    final int maxHeight = metrics.heightPixels;
 
                    QtDisplayManager.handleLayoutSizeChanged(maxWidth, maxHeight);
 
                    QtDisplayManager.updateRefreshRate(m_service);
                    QtDisplayManager.handleScreenDensityChanged(metrics.density);
                });
            }
        }
    }
 
    // QtEmbeddedViewInterface implementation begin
    @Override
    public void startQtApplication(String appParams, String mainLib)
    {
        QtNative.startApplication(appParams, mainLib);
    }
 
    @Override
    public void addView(QtView view)
    {
        if (m_views.add(view)) {
            QtNative.runAction(() -> createRootWindow(view));
        }
    }
 
    @Override
    public void removeView(QtView view)
    {
        m_views.remove(view);
        if (m_views.isEmpty())
            cleanup();
    }
    // QtEmbeddedViewInterface implementation end
 
    private void createRootWindow(QtView view)
    {
        if (m_views.contains(view)) {
            QtView.createRootWindow(view, view.getLeft(), view.getTop(), view.getWidth(),
                                    view.getHeight());
        }
    }
 
    private void cleanup()
    {
        QtNative.setApplicationState(ApplicationSuspended);
        QtNative.unregisterAppStateListener(QtServiceEmbeddedDelegate.this);
        QtEmbeddedViewInterfaceFactory.remove(m_service);
 
        QtNative.terminateQtNativeApplication();
        QtNative.setService(null);
    }
}