File indexing completed on 2024-04-14 04:53:33

 /* This file is part of the KDE project
    Copyright (C) 2009 Collabora Ltd <info@collabora.co.uk>
     @author George Goldberg <george.goldberg@collabora.co.uk>
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    along with this program; see the file COPYING.  If not, write to
    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
    Boston, MA 02110-1301, USA.
 */
 
 #include "framebuffermanager.h"
 
 #include "framebufferplugin.h"
 #include "krfbconfig.h"
 #include "krfbdebug.h"
 
 #include <QGuiApplication>
 #include <QGlobalStatic>
 
 #include <KPluginFactory>
 #include <KPluginMetaData>
 
 
 class FrameBufferManagerStatic
 {
 public:
     FrameBufferManager instance;
 };
 
 Q_GLOBAL_STATIC(FrameBufferManagerStatic, frameBufferManagerStatic)
 
 FrameBufferManager::FrameBufferManager()
 {
     const auto platformFilter = [] (const KPluginMetaData &pluginData) {
         return pluginData.value(QStringLiteral("X-KDE-OnlyShowOnQtPlatforms"), QStringList()).contains(QGuiApplication::platformName());
     };
     const QVector<KPluginMetaData> plugins = KPluginMetaData::findPlugins(QStringLiteral("krfb/framebuffer"), platformFilter, KPluginMetaData::AllowEmptyMetaData);
     for (const KPluginMetaData &data : plugins) {
         const KPluginFactory::Result<FrameBufferPlugin> result = KPluginFactory::instantiatePlugin<FrameBufferPlugin>(data);
         if (result.plugin) {
             m_plugins.insert(data.pluginId(), result.plugin);
             qCDebug(KRFB) << "Loaded plugin with name " << data.pluginId();
         } else {
             qCDebug(KRFB) << "unable to load plugin for " << data.fileName() << result.errorString;
         }
     }
 }
 
 FrameBufferManager::~FrameBufferManager()
 {
 }
 
 FrameBufferManager *FrameBufferManager::instance()
 {
     return &frameBufferManagerStatic->instance;
 }
 
 QSharedPointer<FrameBuffer> FrameBufferManager::frameBuffer(WId id, const QVariantMap &args)
 {
     // See if there is still an existing framebuffer to this WId.
     if (m_frameBuffers.contains(id)) {
         QWeakPointer<FrameBuffer> weakFrameBuffer = m_frameBuffers.value(id);
 
         if (weakFrameBuffer) {
             //qDebug() << "Found cached frame buffer.";
             return weakFrameBuffer.toStrongRef();
         } else {
             //qDebug() << "Found deleted cached frame buffer. Don't use.";
             m_frameBuffers.remove(id);
         }
     }
 
     if (auto preferredPlugin = m_plugins.value(KrfbConfig::preferredFrameBufferPlugin())) {
         if (auto frameBuffer = QSharedPointer<FrameBuffer>(preferredPlugin->frameBuffer(args))) {
             qCDebug(KRFB) << "Using FrameBuffer:" << KrfbConfig::preferredFrameBufferPlugin();
             m_frameBuffers.insert(id, frameBuffer.toWeakRef());
             return frameBuffer;
         }
     }
 
     // We don't already have that frame buffer.
     for (auto it = m_plugins.cbegin(); it != m_plugins.constEnd(); it++) {
         QSharedPointer<FrameBuffer> frameBuffer(it.value()->frameBuffer(args));
         if (frameBuffer) {
             qCDebug(KRFB) << "Using FrameBuffer:" << it.key();
             m_frameBuffers.insert(id, frameBuffer.toWeakRef());
             return frameBuffer;
         }
     }
 
     // No valid framebuffer plugin found.
     qCDebug(KRFB) << "No valid framebuffer found. returning null.";
     return QSharedPointer<FrameBuffer>();
 }