libs/widgets/KoResourceServerProvider.h

0001 /*  This file is part of the KDE project
0002
0003     Copyright (c) 1999 Matthias Elter <elter@kde.org>
0004     Copyright (c) 2003 Patrick Julien <freak@codepimps.org>
0005     Copyright (c) 2005 Sven Langkamp <sven.langkamp@gmail.com>
0006
0007     This library is free software; you can redistribute it and/or
0008     modify it under the terms of the GNU Lesser General Public
0009     License as published by the Free Software Foundation; either
0010     version 2.1 of the License, or (at your option) any later version.
0011
0012     This library is distributed in the hope that it will be useful,
0013     but WITHOUT ANY WARRANTY; without even the implied warranty of
0014     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
0015     Lesser General Public License for more details.
0016
0017     You should have received a copy of the GNU Lesser General Public
0018     License along with this library; if not, write to the Free Software
0019     Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
0020  */
0021
0022 #ifndef KORESOURCESERVERPROVIDER_H
0023 #define KORESOURCESERVERPROVIDER_H
0024
0025 #include <kowidgets_export.h>
0026
0027 #include <QThread>
0028
0029 #include <WidgetsDebug.h>
0030
0031 #include "KoResourceServer.h"
0032 #include "KoPattern.h"
0033 #include "KoAbstractGradient.h"
0034 #include "KoColorSet.h"
0035
0036 /**
0037  * KoResourceLoaderThread allows threaded loading of the resources of a resource server
0038  */
0039 class KOWIDGETS_EXPORT KoResourceLoaderThread : public QThread {
0040
0041     Q_OBJECT
0042 public:
0043
0044     /**
0045      * Constructs a KoResourceLoaderThread for a server
0046      * @param server the server the resources will be loaded for
0047      */
0048     explicit KoResourceLoaderThread(KoResourceServerBase *server);
0049     ~KoResourceLoaderThread() override = default;
0050 public Q_SLOTS:
0051     /**
0052      * Checks whether the thread has finished loading and waits
0053      * until it is finished if necessary
0054      */
0055     void barrier();
0056
0057 protected:
0058     /**
0059      * Overridden from QThread
0060      */
0061     void run() override;
0062
0063 private:
0064
0065     KoResourceServerBase * m_server;
0066     QStringList m_fileNames;
0067 };
0068
0069
0070 /**
0071  * Provides default resource servers for gradients, patterns and palettes
0072  */
0073 class KOWIDGETS_EXPORT KoResourceServerProvider : public QObject
0074 {
0075     Q_OBJECT
0076
0077 public:
0078     KoResourceServerProvider();
0079     ~KoResourceServerProvider() override;
0080
0081     static KoResourceServerProvider* instance();
0082
0083     KoResourceServer<KoPattern>* patternServer(bool block = true);
0084     KoResourceServer<KoAbstractGradient>* gradientServer(bool block = true);
0085     KoResourceServer<KoColorSet>* paletteServer(bool block = true);
0086
0087 private:
0088     KoResourceServerProvider(const KoResourceServerProvider&);
0089     KoResourceServerProvider operator=(const KoResourceServerProvider&);
0090
0091 private:
0092     struct Private;
0093     Private* const d;
0094 };
0095
0096 #endif // KORESOURCESERVERPROVIDER_H