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// Copyright (C) 2020 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#pragma once
#include "asynchronousimagecacheinterface.h"
#include <condition_variable>
#include <deque>
#include <functional>
#include <mutex>
#include <optional>
#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 requestMidSizeImage(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, MidSizeImage, 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;
};
std::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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