tdesktop/Telegram/SourceFiles/gui/images.cpp

296 lines
7.9 KiB
C++

/*
This file is part of Telegram Desktop,
an unofficial desktop messaging app, see https://telegram.org
Telegram Desktop is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
It is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
Copyright (c) 2014 John Preston, https://tdesktop.com
*/
#include "stdafx.h"
#include "gui/images.h"
#include "mainwidget.h"
namespace {
typedef QMap<QString, LocalImage*> LocalImages;
LocalImages localImages;
Image *blank() {
static Image *img = getImage(qsl(":/gui/art/blank.gif"));
return img;
}
typedef QMap<QByteArray, StorageImage*> StorageImages;
StorageImages storageImages;
QByteArray storageKey(int32 dc, const int64 &volume, int32 local, const int64 &secret) {
QByteArray result(24, Qt::Uninitialized);
memcpy(result.data(), &dc, 4);
memcpy(result.data() + 4, &volume, 8);
memcpy(result.data() + 12, &local, 4);
memcpy(result.data() + 16, &secret, 8);
return result;
}
int64 globalAquiredSize = 0;
}
bool Image::isNull() const {
return (this == blank());
}
ImagePtr::ImagePtr() : Parent(blank()) {
}
ImagePtr::ImagePtr(int32 width, int32 height, const MTPFileLocation &location, ImagePtr def) :
Parent((location.type() == mtpc_fileLocation) ? (Image*)(getImage(width, height, location.c_fileLocation().vdc_id.v, location.c_fileLocation().vvolume_id.v, location.c_fileLocation().vlocal_id.v, location.c_fileLocation().vsecret.v)) : def.v()) {
}
const QPixmap &Image::pix(int32 w, int32 h) const {
restore();
checkload();
if (w <= 0 || !width() || !height()) w = width();
uint64 k = (uint64(w) << 32) | uint64(h);
Sizes::const_iterator i = _sizesCache.constFind(k);
if (i == _sizesCache.cend()) {
QPixmap p(pixNoCache(w, h, true));
i = _sizesCache.insert(k, p);
if (!p.isNull()) {
globalAquiredSize += int64(p.width()) * p.height() * 4;
}
}
return i.value();
}
QPixmap Image::pixNoCache(int32 w, int32 h, bool smooth) const {
restore();
loaded();
const QPixmap &p(pixData());
if (p.isNull()) return blank()->pix();
if (w <= 0 || !width() || !height() || w == width()) return p;
if (h <= 0) {
return QPixmap::fromImage(p.toImage().scaledToWidth(w, smooth ? Qt::SmoothTransformation : Qt::FastTransformation));
}
return QPixmap::fromImage(p.toImage().scaled(w, h, Qt::IgnoreAspectRatio, smooth ? Qt::SmoothTransformation : Qt::FastTransformation));
}
void Image::forget() const {
if (forgot) return;
const QPixmap &p(pixData());
if (p.isNull()) return;
invalidateSizeCache();
if (saved.isEmpty()) {
QBuffer buffer(&saved);
p.save(&buffer, format);
}
globalAquiredSize -= int64(p.width()) * p.height() * 4;
doForget();
forgot = true;
}
void Image::restore() const {
if (!forgot) return;
doRestore();
const QPixmap &p(pixData());
if (!p.isNull()) {
globalAquiredSize += int64(p.width()) * p.height() * 4;
}
forgot = false;
}
void Image::invalidateSizeCache() const {
for (Sizes::const_iterator i = _sizesCache.cbegin(), e = _sizesCache.cend(); i != e; ++i) {
if (!i->isNull()) {
globalAquiredSize -= int64(i->width()) * i->height() * 4;
}
}
_sizesCache.clear();
}
LocalImage::LocalImage(const QString &file) : data(file) {
if (!data.isNull()) {
globalAquiredSize += int64(data.width()) * data.height() * 4;
}
}
LocalImage::LocalImage(const QPixmap &pixmap, QByteArray format) : Image(format), data(pixmap) {
if (!data.isNull()) {
globalAquiredSize += int64(data.width()) * data.height() * 4;
}
}
const QPixmap &LocalImage::pixData() const {
return data;
}
int32 LocalImage::width() const {
restore();
return data.width();
}
int32 LocalImage::height() const {
restore();
return data.height();
}
LocalImage *getImage(const QString &file) {
LocalImages::const_iterator i = localImages.constFind(file);
if (i == localImages.cend()) {
i = localImages.insert(file, new LocalImage(file));
}
return i.value();
}
LocalImage::~LocalImage() {
if (!data.isNull()) {
globalAquiredSize -= int64(data.width()) * data.height() * 4;
}
}
LocalImage *getImage(const QPixmap &pixmap, QByteArray format) {
return new LocalImage(pixmap, format);
}
void clearStorageImages() {
for (StorageImages::const_iterator i = storageImages.cbegin(), e = storageImages.cend(); i != e; ++i) {
delete i.value();
}
storageImages.clear();
}
void clearAllImages() {
for (LocalImages::const_iterator i = localImages.cbegin(), e = localImages.cend(); i != e; ++i) {
delete i.value();
}
localImages.clear();
clearStorageImages();
}
int64 imageCacheSize() {
return globalAquiredSize;
}
StorageImage::StorageImage(int32 width, int32 height, int32 dc, const int64 &volume, int32 local, const int64 &secret) : loader(new mtpFileLoader(dc, volume, local, secret)), w(width), h(height) {
}
StorageImage::StorageImage(int32 width, int32 height, int32 dc, const int64 &volume, int32 local, const int64 &secret, QByteArray &bytes) : loader(0), w(width), h(height) {
setData(bytes);
}
const QPixmap &StorageImage::pixData() const {
return data;
}
int32 StorageImage::width() const {
return w;
}
int32 StorageImage::height() const {
return h;
}
bool StorageImage::check() const {
if (loader->done()) {
switch (loader->fileType()) {
case mtpc_storage_fileGif: format = "GIF"; break;
case mtpc_storage_fileJpeg: format = "JPG"; break;
case mtpc_storage_filePng: format = "PNG"; break;
default: format = QByteArray(); break;
}
if (!data.isNull()) {
globalAquiredSize -= int64(data.width()) * data.height() * 4;
}
QByteArray bytes = loader->bytes();
data = QPixmap::fromImage(App::readImage(bytes, &format), Qt::ColorOnly);
if (!data.isNull()) {
globalAquiredSize += int64(data.width()) * data.height() * 4;
}
w = data.width();
h = data.height();
invalidateSizeCache();
loader->deleteLater();
loader = 0;
saved = bytes;
forgot = false;
return true;
}
return false;
}
void StorageImage::setData(QByteArray &bytes, const QByteArray &format) {
QBuffer buffer(&bytes);
QImageReader reader(&buffer, format);
if (!data.isNull()) {
globalAquiredSize -= int64(data.width()) * data.height() * 4;
}
data = QPixmap::fromImageReader(&reader, Qt::ColorOnly);
if (!data.isNull()) {
globalAquiredSize += int64(data.width()) * data.height() * 4;
}
w = data.width();
h = data.height();
invalidateSizeCache();
if (loader) {
loader->deleteLater();
loader = 0;
}
this->saved = bytes;
this->format = reader.format();
forgot = false;
}
StorageImage::~StorageImage() {
if (!data.isNull()) {
globalAquiredSize -= int64(data.width()) * data.height() * 4;
}
if (loader) {
loader->deleteLater();
loader = 0;
}
}
bool StorageImage::loaded() const {
if (!loader) return true;
return check();
}
StorageImage *getImage(int32 width, int32 height, int32 dc, const int64 &volume, int32 local, const int64 &secret) {
QByteArray key(storageKey(dc, volume, local, secret));
StorageImages::const_iterator i = storageImages.constFind(key);
if (i == storageImages.cend()) {
i = storageImages.insert(key, new StorageImage(width, height, dc, volume, local, secret));
}
return i.value();
}
StorageImage *getImage(int32 width, int32 height, int32 dc, const int64 &volume, int32 local, const int64 &secret, const QByteArray &bytes) {
QByteArray key(storageKey(dc, volume, local, secret));
StorageImages::const_iterator i = storageImages.constFind(key);
if (i == storageImages.cend()) {
QByteArray bytesArr(bytes);
i = storageImages.insert(key, new StorageImage(width, height, dc, volume, local, secret, bytesArr));
} else if (!i.value()->loaded()) {
QByteArray bytesArr(bytes);
i.value()->setData(bytesArr);
}
return i.value();
}