347 lines
9.9 KiB
C++
347 lines
9.9 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop application for the Telegram messaging service.
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For license and copyright information please follow this link:
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https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
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*/
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#include "window/window_media_preview.h"
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#include "data/data_photo.h"
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#include "data/data_document.h"
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#include "ui/image/image.h"
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#include "ui/emoji_config.h"
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#include "lottie/lottie_single_player.h"
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#include "main/main_session.h"
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#include "chat_helpers/stickers.h"
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#include "window/window_session_controller.h"
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#include "styles/style_boxes.h"
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#include "styles/style_chat_helpers.h"
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#include "styles/style_history.h"
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namespace Window {
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namespace {
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constexpr int kStickerPreviewEmojiLimit = 10;
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} // namespace
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MediaPreviewWidget::MediaPreviewWidget(
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QWidget *parent,
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not_null<Window::SessionController*> controller)
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: RpWidget(parent)
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, _controller(controller)
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, _emojiSize(Ui::Emoji::GetSizeLarge() / cIntRetinaFactor()) {
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setAttribute(Qt::WA_TransparentForMouseEvents);
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subscribe(_controller->session().downloaderTaskFinished(), [=] {
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update();
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});
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}
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QRect MediaPreviewWidget::updateArea() const {
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const auto size = currentDimensions();
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return QRect(
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QPoint((width() - size.width()) / 2, (height() - size.height()) / 2),
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size);
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}
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void MediaPreviewWidget::paintEvent(QPaintEvent *e) {
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Painter p(this);
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QRect r(e->rect());
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const auto image = [&] {
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if (!_lottie || !_lottie->ready()) {
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return QImage();
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}
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_lottie->markFrameShown();
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return _lottie->frame();
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}();
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const auto pixmap = image.isNull() ? currentImage() : QPixmap();
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const auto size = image.isNull() ? pixmap.size() : image.size();
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int w = size.width() / cIntRetinaFactor(), h = size.height() / cIntRetinaFactor();
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auto shown = _a_shown.value(_hiding ? 0. : 1.);
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if (!_a_shown.animating()) {
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if (_hiding) {
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hide();
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_controller->disableGifPauseReason(Window::GifPauseReason::MediaPreview);
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return;
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}
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} else {
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p.setOpacity(shown);
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// w = qMax(qRound(w * (st::stickerPreviewMin + ((1. - st::stickerPreviewMin) * shown)) / 2.) * 2 + int(w % 2), 1);
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// h = qMax(qRound(h * (st::stickerPreviewMin + ((1. - st::stickerPreviewMin) * shown)) / 2.) * 2 + int(h % 2), 1);
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}
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p.fillRect(r, st::stickerPreviewBg);
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if (image.isNull()) {
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p.drawPixmap((width() - w) / 2, (height() - h) / 2, pixmap);
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} else {
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p.drawImage(
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QRect((width() - w) / 2, (height() - h) / 2, w, h),
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image);
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}
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if (!_emojiList.empty()) {
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const auto emojiCount = _emojiList.size();
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const auto emojiWidth = (emojiCount * _emojiSize) + (emojiCount - 1) * st::stickerEmojiSkip;
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auto emojiLeft = (width() - emojiWidth) / 2;
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const auto esize = Ui::Emoji::GetSizeLarge();
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for (const auto emoji : _emojiList) {
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Ui::Emoji::Draw(
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p,
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emoji,
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esize,
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emojiLeft,
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(height() - h) / 2 - (_emojiSize * 2));
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emojiLeft += _emojiSize + st::stickerEmojiSkip;
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}
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}
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}
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void MediaPreviewWidget::resizeEvent(QResizeEvent *e) {
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update();
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}
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void MediaPreviewWidget::showPreview(
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Data::FileOrigin origin,
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not_null<DocumentData*> document) {
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if (!document
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|| (!document->isAnimation() && !document->sticker())
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|| document->isVideoMessage()) {
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hidePreview();
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return;
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}
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startShow();
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_origin = origin;
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_photo = nullptr;
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_document = document;
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fillEmojiString();
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resetGifAndCache();
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}
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void MediaPreviewWidget::showPreview(
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Data::FileOrigin origin,
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not_null<PhotoData*> photo) {
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startShow();
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_origin = origin;
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_photo = photo;
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_document = nullptr;
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fillEmojiString();
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resetGifAndCache();
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}
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void MediaPreviewWidget::startShow() {
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_cache = QPixmap();
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if (isHidden() || _a_shown.animating()) {
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if (isHidden()) {
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show();
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_controller->enableGifPauseReason(Window::GifPauseReason::MediaPreview);
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}
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_hiding = false;
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_a_shown.start([this] { update(); }, 0., 1., st::stickerPreviewDuration);
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} else {
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update();
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}
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}
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void MediaPreviewWidget::hidePreview() {
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if (isHidden()) {
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return;
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}
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if (_gif) _cache = currentImage();
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_hiding = true;
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_a_shown.start([this] { update(); }, 1., 0., st::stickerPreviewDuration);
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_photo = nullptr;
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_document = nullptr;
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resetGifAndCache();
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}
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void MediaPreviewWidget::fillEmojiString() {
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_emojiList.clear();
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if (_photo) {
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return;
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}
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if (auto sticker = _document->sticker()) {
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if (auto list = Stickers::GetEmojiListFromSet(_document)) {
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_emojiList = std::move(*list);
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while (_emojiList.size() > kStickerPreviewEmojiLimit) {
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_emojiList.pop_back();
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}
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} else if (const auto emoji = Ui::Emoji::Find(sticker->alt)) {
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_emojiList.emplace_back(emoji);
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}
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}
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}
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void MediaPreviewWidget::resetGifAndCache() {
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_lottie = nullptr;
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_gif.reset();
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_cacheStatus = CacheNotLoaded;
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_cachedSize = QSize();
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}
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QSize MediaPreviewWidget::currentDimensions() const {
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if (!_cachedSize.isEmpty()) {
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return _cachedSize;
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}
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if (!_document && !_photo) {
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_cachedSize = QSize(_cache.width() / cIntRetinaFactor(), _cache.height() / cIntRetinaFactor());
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return _cachedSize;
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}
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QSize result, box;
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if (_photo) {
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result = QSize(_photo->width(), _photo->height());
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box = QSize(width() - 2 * st::boxVerticalMargin, height() - 2 * st::boxVerticalMargin);
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} else {
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result = _document->dimensions;
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if (_gif && _gif->ready()) {
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result = QSize(_gif->width(), _gif->height());
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}
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if (_document->sticker()) {
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box = QSize(st::maxStickerSize, st::maxStickerSize);
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} else {
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box = QSize(2 * st::maxStickerSize, 2 * st::maxStickerSize);
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}
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}
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result = QSize(qMax(style::ConvertScale(result.width()), 1), qMax(style::ConvertScale(result.height()), 1));
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if (result.width() > box.width()) {
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result.setHeight(qMax((box.width() * result.height()) / result.width(), 1));
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result.setWidth(box.width());
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}
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if (result.height() > box.height()) {
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result.setWidth(qMax((box.height() * result.width()) / result.height(), 1));
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result.setHeight(box.height());
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}
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if (_photo) {
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_cachedSize = result;
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}
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return result;
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}
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void MediaPreviewWidget::setupLottie() {
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Expects(_document != nullptr);
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_lottie = std::make_unique<Lottie::SinglePlayer>(
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Lottie::ReadContent(_document->data(), _document->filepath()),
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Lottie::FrameRequest{ currentDimensions() * cIntRetinaFactor() },
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Lottie::Quality::High);
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_lottie->updates(
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) | rpl::start_with_next([=](Lottie::Update update) {
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update.data.match([&](const Lottie::Information &) {
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this->update();
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}, [&](const Lottie::DisplayFrameRequest &) {
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this->update(updateArea());
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});
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}, lifetime());
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}
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QPixmap MediaPreviewWidget::currentImage() const {
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if (_document) {
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if (const auto sticker = _document->sticker()) {
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if (_cacheStatus != CacheLoaded) {
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if (sticker->animated && !_lottie && _document->loaded()) {
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const_cast<MediaPreviewWidget*>(this)->setupLottie();
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}
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if (_lottie && _lottie->ready()) {
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return QPixmap();
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} else if (const auto image = _document->getStickerLarge()) {
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QSize s = currentDimensions();
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_cache = image->pix(_origin, s.width(), s.height());
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_cacheStatus = CacheLoaded;
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} else if (_cacheStatus != CacheThumbLoaded
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&& _document->hasThumbnail()
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&& _document->thumbnail()->loaded()) {
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QSize s = currentDimensions();
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_cache = _document->thumbnail()->pixBlurred(_origin, s.width(), s.height());
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_cacheStatus = CacheThumbLoaded;
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}
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}
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} else {
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_document->automaticLoad(_origin, nullptr);
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if (_document->loaded()) {
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if (!_gif && !_gif.isBad()) {
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auto that = const_cast<MediaPreviewWidget*>(this);
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that->_gif = Media::Clip::MakeReader(_document, FullMsgId(), [=](Media::Clip::Notification notification) {
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that->clipCallback(notification);
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});
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if (_gif) _gif->setAutoplay();
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}
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}
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if (_gif && _gif->started()) {
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auto s = currentDimensions();
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auto paused = _controller->isGifPausedAtLeastFor(Window::GifPauseReason::MediaPreview);
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return _gif->current(s.width(), s.height(), s.width(), s.height(), ImageRoundRadius::None, RectPart::None, paused ? 0 : crl::now());
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}
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if (_cacheStatus != CacheThumbLoaded
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&& _document->hasThumbnail()) {
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QSize s = currentDimensions();
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if (_document->thumbnail()->loaded()) {
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_cache = _document->thumbnail()->pixBlurred(_origin, s.width(), s.height());
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_cacheStatus = CacheThumbLoaded;
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} else if (const auto blurred = _document->thumbnailInline()) {
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_cache = _document->thumbnail()->pixBlurred(_origin, s.width(), s.height());
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_cacheStatus = CacheThumbLoaded;
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} else {
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_document->thumbnail()->load(_origin);
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}
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}
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}
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} else if (_photo) {
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if (_cacheStatus != CacheLoaded) {
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if (_photo->loaded()) {
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QSize s = currentDimensions();
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_cache = _photo->large()->pix(_origin, s.width(), s.height());
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_cacheStatus = CacheLoaded;
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} else {
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_photo->load(_origin);
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if (_cacheStatus != CacheThumbLoaded) {
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QSize s = currentDimensions();
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if (_photo->thumbnail()->loaded()) {
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_cache = _photo->thumbnail()->pixBlurred(_origin, s.width(), s.height());
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_cacheStatus = CacheThumbLoaded;
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} else if (_photo->thumbnailSmall()->loaded()) {
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_cache = _photo->thumbnailSmall()->pixBlurred(_origin, s.width(), s.height());
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_cacheStatus = CacheThumbLoaded;
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} else if (const auto blurred = _photo->thumbnailInline()) {
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_cache = blurred->pixBlurred(_origin, s.width(), s.height());
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_cacheStatus = CacheThumbLoaded;
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} else {
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_photo->thumbnailSmall()->load(_origin);
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}
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}
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}
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}
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}
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return _cache;
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}
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void MediaPreviewWidget::clipCallback(Media::Clip::Notification notification) {
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using namespace Media::Clip;
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switch (notification) {
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case NotificationReinit: {
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if (_gif && _gif->state() == State::Error) {
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_gif.setBad();
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}
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if (_gif && _gif->ready() && !_gif->started()) {
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QSize s = currentDimensions();
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_gif->start(s.width(), s.height(), s.width(), s.height(), ImageRoundRadius::None, RectPart::None);
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}
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update();
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} break;
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case NotificationRepaint: {
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if (_gif && !_gif->currentDisplayed()) {
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update(updateArea());
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}
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} break;
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}
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}
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MediaPreviewWidget::~MediaPreviewWidget() {
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}
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} // namespace Window
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