tdesktop/Telegram/SourceFiles/data/data_document_good_thumbnai...

266 lines
5.7 KiB
C++

/*
This file is part of Telegram Desktop,
the official desktop application for the Telegram messaging service.
For license and copyright information please follow this link:
https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
*/
#include "data/data_document_good_thumbnail.h"
#include "data/data_session.h"
#include "data/data_document.h"
#include "data/data_file_origin.h"
#include "media/clip/media_clip_reader.h"
#include "auth_session.h"
namespace Data {
namespace {
constexpr auto kGoodThumbQuality = 87;
constexpr auto kWallPaperSize = 960;
QImage Prepare(
const QString &path,
QByteArray data,
bool isWallPaper) {
if (!isWallPaper) {
return Media::Clip::PrepareForSending(path, data).thumbnail;
}
const auto validateSize = [](QSize size) {
return (size.width() + size.height()) < 10'000;
};
auto buffer = QBuffer(&data);
auto file = QFile(path);
auto device = data.isEmpty() ? static_cast<QIODevice*>(&file) : &buffer;
auto reader = QImageReader(device);
#ifndef OS_MAC_OLD
reader.setAutoTransform(true);
#endif // OS_MAC_OLD
if (!reader.canRead() || !validateSize(reader.size())) {
return QImage();
}
auto result = reader.read();
if (!result.width() || !result.height()) {
return QImage();
}
return (result.width() > kWallPaperSize
|| result.height() > kWallPaperSize)
? result.scaled(
kWallPaperSize,
kWallPaperSize,
Qt::KeepAspectRatio,
Qt::SmoothTransformation)
: result;
}
} // namespace
GoodThumbSource::GoodThumbSource(not_null<DocumentData*> document)
: _document(document) {
}
void GoodThumbSource::generate(base::binary_guard &&guard) {
if (!guard) {
return;
}
const auto data = _document->data();
const auto isWallPaper = _document->isWallPaper();
auto location = _document->location().isEmpty()
? nullptr
: std::make_unique<FileLocation>(_document->location());
if (data.isEmpty() && !location) {
_empty = true;
return;
}
crl::async([
=,
guard = std::move(guard),
location = std::move(location)
]() mutable {
const auto filepath = (location && location->accessEnable())
? location->name()
: QString();
auto result = Prepare(filepath, data, isWallPaper);
auto bytes = QByteArray();
if (!result.isNull()) {
auto buffer = QBuffer(&bytes);
const auto format = (isWallPaper && result.hasAlphaChannel())
? "PNG"
: "JPG";
result.save(&buffer, format, kGoodThumbQuality);
}
if (!filepath.isEmpty()) {
location->accessDisable();
}
const auto bytesSize = bytes.size();
ready(
std::move(guard),
std::move(result),
bytesSize,
std::move(bytes));
});
}
// NB: This method is called from crl::async(), 'this' is unreliable.
void GoodThumbSource::ready(
base::binary_guard &&guard,
QImage &&image,
int bytesSize,
QByteArray &&bytesForCache) {
crl::on_main(std::move(guard), [
=,
image = std::move(image),
bytes = std::move(bytesForCache)
]() mutable {
if (image.isNull()) {
_empty = true;
return;
}
_loaded = std::move(image);
_width = _loaded.width();
_height = _loaded.height();
_bytesSize = bytesSize;
if (!bytes.isEmpty()) {
Auth().data().cache().put(
_document->goodThumbnailCacheKey(),
Storage::Cache::Database::TaggedValue{
std::move(bytes),
Data::kImageCacheTag });
}
Auth().downloaderTaskFinished().notify();
});
}
void GoodThumbSource::load(
Data::FileOrigin origin,
bool loadFirst,
bool prior) {
if (loading() || _empty) {
return;
}
auto callback = [=, guard = _loading.make_guard()](
QByteArray &&value) mutable {
if (value.isEmpty()) {
crl::on_main([=, guard = std::move(guard)]() mutable {
generate(std::move(guard));
});
return;
}
crl::async([
=,
guard = std::move(guard),
value = std::move(value)
]() mutable {
ready(
std::move(guard),
App::readImage(value, nullptr, false),
value.size());
});
};
Auth().data().cache().get(
_document->goodThumbnailCacheKey(),
std::move(callback));
}
void GoodThumbSource::loadEvenCancelled(
Data::FileOrigin origin,
bool loadFirst,
bool prior) {
_empty = false;
load(origin, loadFirst, prior);
}
QImage GoodThumbSource::takeLoaded() {
return std::move(_loaded);
}
void GoodThumbSource::unload() {
_loaded = QImage();
cancel();
}
void GoodThumbSource::automaticLoad(
Data::FileOrigin origin,
const HistoryItem *item) {
}
void GoodThumbSource::automaticLoadSettingsChanged() {
}
bool GoodThumbSource::loading() {
return _loading.alive();
}
bool GoodThumbSource::displayLoading() {
return false;
}
void GoodThumbSource::cancel() {
_loading = nullptr;
}
float64 GoodThumbSource::progress() {
return 1.;
}
int GoodThumbSource::loadOffset() {
return 0;
}
const StorageImageLocation &GoodThumbSource::location() {
return StorageImageLocation::Invalid();
}
void GoodThumbSource::refreshFileReference(const QByteArray &data) {
}
std::optional<Storage::Cache::Key> GoodThumbSource::cacheKey() {
return _document->goodThumbnailCacheKey();
}
void GoodThumbSource::setDelayedStorageLocation(
const StorageImageLocation &location) {
}
void GoodThumbSource::performDelayedLoad(Data::FileOrigin origin) {
}
bool GoodThumbSource::isDelayedStorageImage() const {
return false;
}
void GoodThumbSource::setImageBytes(const QByteArray &bytes) {
if (!bytes.isEmpty()) {
cancel();
_loaded = App::readImage(bytes);
_width = _loaded.width();
_height = _loaded.height();
_bytesSize = bytes.size();
}
}
int GoodThumbSource::width() {
return _width;
}
int GoodThumbSource::height() {
return _height;
}
int GoodThumbSource::bytesSize() {
return _bytesSize;
}
void GoodThumbSource::setInformation(int size, int width, int height) {
_width = width;
_height = height;
_bytesSize = size;
}
QByteArray GoodThumbSource::bytesForCache() {
return QByteArray();
}
} // namespace Data