init

Telegram/SourceFiles/media/streaming/media_streaming_round_preview.cpp

@@ -0,0 +1,62 @@
+/*
+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 "media/streaming/media_streaming_round_preview.h"
+
+namespace Media::Streaming {
+
+RoundPreview::RoundPreview(const QByteArray &bytes, int size)
+: _bytes(bytes)
+, _reader(
+	Clip::MakeReader(_bytes, [=](Clip::Notification update) {
+		clipCallback(update);
+	}))
+, _size(size) {
+}
+
+std::shared_ptr<Ui::DynamicImage> RoundPreview::clone() {
+	Unexpected("RoundPreview::clone.");
+}
+
+QImage RoundPreview::image(int size) {
+	if (!_reader || !_reader->started()) {
+		return QImage();
+	}
+	return _reader->current({
+		.frame = QSize(_size, _size),
+		.factor = style::DevicePixelRatio(),
+		.radius = ImageRoundRadius::Ellipse,
+	}, crl::now());
+}
+
+void RoundPreview::subscribeToUpdates(Fn<void()> callback) {
+	_repaint = std::move(callback);
+}
+
+void RoundPreview::clipCallback(Clip::Notification notification) {
+	switch (notification) {
+	case Clip::Notification::Reinit: {
+		if (_reader->state() == ::Media::Clip::State::Error) {
+			_reader.setBad();
+		} else if (_reader->ready() && !_reader->started()) {
+			_reader->start({
+				.frame = QSize(_size, _size),
+				.factor = style::DevicePixelRatio(),
+				.radius = ImageRoundRadius::Ellipse,
+			});
+		}
+	} break;
+
+	case Clip::Notification::Repaint: break;
+	}
+
+	if (const auto onstack = _repaint) {
+		onstack();
+	}
+}
+
+} // namespace Media::Streaming