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/****************************************************************************
**
** Copyright (C) 2020 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/
#pragma once
#include "asynchronousimagecacheinterface.h"
#include <utils/optional.h>
#include <condition_variable>
#include <deque>
#include <functional>
#include <mutex>
#include <thread>
namespace QmlDesigner {
class TimeStampProviderInterface;
class ImageCacheStorageInterface;
class ImageCacheGeneratorInterface;
class ImageCacheCollectorInterface;
class AsynchronousImageCache final : public AsynchronousImageCacheInterface
{
public:
~AsynchronousImageCache();
AsynchronousImageCache(ImageCacheStorageInterface &storage,
ImageCacheGeneratorInterface &generator,
TimeStampProviderInterface &timeStampProvider);
void requestImage(Utils::PathString name,
ImageCache::CaptureImageCallback captureCallback,
ImageCache::AbortCallback abortCallback,
Utils::SmallString extraId = {},
ImageCache::AuxiliaryData auxiliaryData = {}) override;
void requestSmallImage(Utils::PathString name,
ImageCache::CaptureImageCallback captureCallback,
ImageCache::AbortCallback abortCallback,
Utils::SmallString extraId = {},
ImageCache::AuxiliaryData auxiliaryData = {}) override;
void clean();
private:
enum class RequestType { Image, SmallImage, Icon };
struct Entry
{
Entry() = default;
Entry(Utils::PathString name,
Utils::SmallString extraId,
ImageCache::CaptureImageCallback &&captureCallback,
ImageCache::AbortCallback &&abortCallback,
ImageCache::AuxiliaryData &&auxiliaryData,
RequestType requestType)
: name{std::move(name)}
, extraId{std::move(extraId)}
, captureCallback{std::move(captureCallback)}
, abortCallback{std::move(abortCallback)}
, auxiliaryData{std::move(auxiliaryData)}
, requestType{requestType}
{}
Utils::PathString name;
Utils::SmallString extraId;
ImageCache::CaptureImageCallback captureCallback;
ImageCache::AbortCallback abortCallback;
ImageCache::AuxiliaryData auxiliaryData;
RequestType requestType = RequestType::Image;
};
Utils::optional<Entry> getEntry();
void addEntry(Utils::PathString &&name,
Utils::SmallString &&extraId,
ImageCache::CaptureImageCallback &&captureCallback,
ImageCache::AbortCallback &&abortCallback,
ImageCache::AuxiliaryData &&auxiliaryData,
RequestType requestType);
void clearEntries();
void waitForEntries();
void stopThread();
bool isRunning();
static void request(Utils::SmallStringView name,
Utils::SmallStringView extraId,
AsynchronousImageCache::RequestType requestType,
ImageCache::CaptureImageCallback captureCallback,
ImageCache::AbortCallback abortCallback,
ImageCache::AuxiliaryData auxiliaryData,
ImageCacheStorageInterface &storage,
ImageCacheGeneratorInterface &generator,
TimeStampProviderInterface &timeStampProvider);
private:
void wait();
private:
std::deque<Entry> m_entries;
mutable std::mutex m_mutex;
std::condition_variable m_condition;
std::thread m_backgroundThread;
ImageCacheStorageInterface &m_storage;
ImageCacheGeneratorInterface &m_generator;
TimeStampProviderInterface &m_timeStampProvider;
bool m_finishing{false};
};
} // namespace QmlDesigner
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