99 lines
2.4 KiB
C++
99 lines
2.4 KiB
C++
/*
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* This file is part of RawTherapee.
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*
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* Copyright (c) 2004-2010 Gabor Horvath <hgabor@rawtherapee.com>
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*
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* RawTherapee is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* RawTherapee is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with RawTherapee. If not, see <https://www.gnu.org/licenses/>.
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*/
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#ifndef _PREVIEWLOADER_
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#define _PREVIEWLOADER_
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#include <set>
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#include <glibmm.h>
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#include "../rtengine/noncopyable.h"
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#include "filebrowserentry.h"
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class PreviewLoaderListener
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{
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public:
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virtual ~PreviewLoaderListener() = default;
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/**
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* @brief a preview is ready
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*
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* @param dir_id directory ID this is for
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* @param fd entry
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*/
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virtual void previewReady(int dir_id, FileBrowserEntry* fd) = 0;
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/**
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* @brief all previews have finished loading
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*/
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virtual void previewsFinished(int dir_id_) = 0;
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};
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class PreviewLoader :
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public rtengine::NonCopyable
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{
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public:
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/**
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* @brief Singleton entry point.
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*
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* @note expects to be called inside gtk thread lock
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*
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* @return Pointer to thumbnail image updater.
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*/
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static PreviewLoader* getInstance(void);
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/**
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* @brief Add an thumbnail image update request.
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*
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* Code will add the request to the queue and, if needed, start a pool
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* thread to process it.
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*
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* @param dir_id directory we're looking at
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* @param dir_entry entry in it
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* @param l listener
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*/
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void add(int dir_id, const Glib::ustring& dir_entry, PreviewLoaderListener* l);
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/**
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* @brief Stop processing and remove all jobs.
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*
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* Will not return till all jobs have completed.
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*
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* @note expects to be called inside gtk thread lock
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*/
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void removeAllJobs(void);
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private:
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PreviewLoader();
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~PreviewLoader();
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class Impl;
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Impl* impl_;
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};
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/**
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* @brief Singleton boiler plate.
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*
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* To use: \c previewLoader->start() ,
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*/
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#define previewLoader PreviewLoader::getInstance()
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#endif
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