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https://github.com/kotatogram/kotatogram-desktop
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initial commit for 0.4.18 version of Telegram Desktop
This commit is contained in:
John Preston
295
Telegram/SourceFiles/gui/images.cpp
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295
Telegram/SourceFiles/gui/images.cpp
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/*
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This file is part of Telegram Desktop,
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an unofficial desktop messaging app, see https://telegram.org
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Telegram Desktop 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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It 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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Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
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Copyright (c) 2014 John Preston, https://tdesktop.com
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*/
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#include "stdafx.h"
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#include "gui/images.h"
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#include "mainwidget.h"
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namespace {
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typedef QMap<QString, LocalImage*> LocalImages;
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LocalImages localImages;
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Image *blank() {
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static Image *img = getImage(qsl(":/gui/art/blank.gif"));
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return img;
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}
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typedef QMap<QByteArray, StorageImage*> StorageImages;
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StorageImages storageImages;
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QByteArray storageKey(int32 dc, const int64 &volume, int32 local, const int64 &secret) {
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QByteArray result(24, Qt::Uninitialized);
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memcpy(result.data(), &dc, 4);
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memcpy(result.data() + 4, &volume, 8);
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memcpy(result.data() + 12, &local, 4);
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memcpy(result.data() + 16, &secret, 8);
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return result;
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}
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int64 globalAquiredSize = 0;
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}
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bool Image::isNull() const {
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return (this == blank());
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}
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ImagePtr::ImagePtr() : Parent(blank()) {
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}
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ImagePtr::ImagePtr(int32 width, int32 height, const MTPFileLocation &location, ImagePtr def) :
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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()) {
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}
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const QPixmap &Image::pix(int32 w, int32 h) const {
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restore();
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checkload();
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if (w <= 0 || !width() || !height()) w = width();
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uint64 k = (uint64(w) << 32) | uint64(h);
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Sizes::const_iterator i = _sizesCache.constFind(k);
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if (i == _sizesCache.cend()) {
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QPixmap p(pixNoCache(w, h, true));
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i = _sizesCache.insert(k, p);
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if (!p.isNull()) {
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globalAquiredSize += int64(p.width()) * p.height() * 4;
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}
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}
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return i.value();
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}
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QPixmap Image::pixNoCache(int32 w, int32 h, bool smooth) const {
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restore();
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loaded();
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const QPixmap &p(pixData());
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if (p.isNull()) return blank()->pix();
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if (w <= 0 || !width() || !height() || w == width()) return p;
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if (h <= 0) {
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return QPixmap::fromImage(p.toImage().scaledToWidth(w, smooth ? Qt::SmoothTransformation : Qt::FastTransformation));
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}
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return QPixmap::fromImage(p.toImage().scaled(w, h, Qt::IgnoreAspectRatio, smooth ? Qt::SmoothTransformation : Qt::FastTransformation));
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}
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void Image::forget() const {
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if (forgot) return;
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const QPixmap &p(pixData());
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if (p.isNull()) return;
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invalidateSizeCache();
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if (saved.isEmpty()) {
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QBuffer buffer(&saved);
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p.save(&buffer, format);
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}
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globalAquiredSize -= int64(p.width()) * p.height() * 4;
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doForget();
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forgot = true;
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}
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void Image::restore() const {
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if (!forgot) return;
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doRestore();
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const QPixmap &p(pixData());
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if (!p.isNull()) {
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globalAquiredSize += int64(p.width()) * p.height() * 4;
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}
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forgot = false;
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}
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void Image::invalidateSizeCache() const {
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for (Sizes::const_iterator i = _sizesCache.cbegin(), e = _sizesCache.cend(); i != e; ++i) {
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if (!i->isNull()) {
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globalAquiredSize -= int64(i->width()) * i->height() * 4;
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}
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}
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_sizesCache.clear();
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}
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LocalImage::LocalImage(const QString &file) : data(file) {
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if (!data.isNull()) {
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globalAquiredSize += int64(data.width()) * data.height() * 4;
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}
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}
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LocalImage::LocalImage(const QPixmap &pixmap, QByteArray format) : Image(format), data(pixmap) {
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if (!data.isNull()) {
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globalAquiredSize += int64(data.width()) * data.height() * 4;
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}
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}
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const QPixmap &LocalImage::pixData() const {
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return data;
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}
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int32 LocalImage::width() const {
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restore();
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return data.width();
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}
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int32 LocalImage::height() const {
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restore();
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return data.height();
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}
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LocalImage *getImage(const QString &file) {
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LocalImages::const_iterator i = localImages.constFind(file);
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if (i == localImages.cend()) {
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i = localImages.insert(file, new LocalImage(file));
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}
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return i.value();
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}
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LocalImage::~LocalImage() {
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if (!data.isNull()) {
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globalAquiredSize -= int64(data.width()) * data.height() * 4;
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}
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}
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LocalImage *getImage(const QPixmap &pixmap, QByteArray format) {
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return new LocalImage(pixmap, format);
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}
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void clearStorageImages() {
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for (StorageImages::const_iterator i = storageImages.cbegin(), e = storageImages.cend(); i != e; ++i) {
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delete i.value();
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}
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storageImages.clear();
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}
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void clearAllImages() {
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for (LocalImages::const_iterator i = localImages.cbegin(), e = localImages.cend(); i != e; ++i) {
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delete i.value();
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}
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localImages.clear();
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clearStorageImages();
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}
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int64 imageCacheSize() {
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return globalAquiredSize;
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}
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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) {
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}
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StorageImage::StorageImage(int32 width, int32 height, int32 dc, const int64 &volume, int32 local, const int64 &secret, QByteArray &bytes) : loader(0), w(width), h(height) {
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setData(bytes);
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}
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const QPixmap &StorageImage::pixData() const {
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return data;
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}
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int32 StorageImage::width() const {
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return w;
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}
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int32 StorageImage::height() const {
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return h;
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}
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bool StorageImage::check() const {
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if (loader->done()) {
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switch (loader->fileType()) {
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case mtpc_storage_fileGif: format = "GIF"; break;
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case mtpc_storage_fileJpeg: format = "JPG"; break;
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case mtpc_storage_filePng: format = "PNG"; break;
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default: format = QByteArray(); break;
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}
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if (!data.isNull()) {
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globalAquiredSize -= int64(data.width()) * data.height() * 4;
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}
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QByteArray bytes = loader->bytes();
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data = QPixmap::fromImage(App::readImage(bytes, &format), Qt::ColorOnly);
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if (!data.isNull()) {
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globalAquiredSize += int64(data.width()) * data.height() * 4;
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}
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w = data.width();
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h = data.height();
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invalidateSizeCache();
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loader->deleteLater();
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loader = 0;
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saved = bytes;
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forgot = false;
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return true;
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}
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return false;
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}
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void StorageImage::setData(QByteArray &bytes, const QByteArray &format) {
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QBuffer buffer(&bytes);
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QImageReader reader(&buffer, format);
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if (!data.isNull()) {
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globalAquiredSize -= int64(data.width()) * data.height() * 4;
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}
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data = QPixmap::fromImageReader(&reader, Qt::ColorOnly);
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if (!data.isNull()) {
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globalAquiredSize += int64(data.width()) * data.height() * 4;
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}
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w = data.width();
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h = data.height();
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invalidateSizeCache();
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if (loader) {
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loader->deleteLater();
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loader = 0;
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}
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this->saved = bytes;
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this->format = reader.format();
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forgot = false;
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}
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StorageImage::~StorageImage() {
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if (!data.isNull()) {
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globalAquiredSize -= int64(data.width()) * data.height() * 4;
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}
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if (loader) {
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loader->deleteLater();
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loader = 0;
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}
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}
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bool StorageImage::loaded() const {
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if (!loader) return true;
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return check();
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}
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StorageImage *getImage(int32 width, int32 height, int32 dc, const int64 &volume, int32 local, const int64 &secret) {
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QByteArray key(storageKey(dc, volume, local, secret));
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StorageImages::const_iterator i = storageImages.constFind(key);
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if (i == storageImages.cend()) {
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i = storageImages.insert(key, new StorageImage(width, height, dc, volume, local, secret));
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}
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return i.value();
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}
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StorageImage *getImage(int32 width, int32 height, int32 dc, const int64 &volume, int32 local, const int64 &secret, const QByteArray &bytes) {
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QByteArray key(storageKey(dc, volume, local, secret));
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StorageImages::const_iterator i = storageImages.constFind(key);
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if (i == storageImages.cend()) {
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QByteArray bytesArr(bytes);
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i = storageImages.insert(key, new StorageImage(width, height, dc, volume, local, secret, bytesArr));
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} else if (!i.value()->loaded()) {
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QByteArray bytesArr(bytes);
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i.value()->setData(bytesArr);
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}
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return i.value();
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}
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