init

Telegram/SourceFiles/media/view/media_view_playback_progress.h

@@ -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
+*/
+#pragma once
+
+#include "ui/widgets/continuous_sliders.h"
+
+namespace Media {
+namespace Player {
+struct TrackState;
+} // namespace Player
+
+namespace View {
+
+class PlaybackProgress {
+public:
+	PlaybackProgress();
+
+	void setValueChangedCallback(Fn<void(float64,float64)> callback) {
+		_valueChanged = std::move(callback);
+	}
+	void setInLoadingStateChangedCallback(Fn<void(bool)> callback) {
+		_inLoadingStateChanged = std::move(callback);
+	}
+	void setValue(float64 value, bool animated);
+	[[nodiscard]] float64 value() const;
+
+	void updateState(
+		const Player::TrackState &state,
+		float64 loadedTillPercent = 0.);
+	void updateLoadingState(float64 progress);
+
+private:
+	bool valueAnimationCallback(float64 now);
+	bool availableTillAnimationCallback(float64 now);
+	void setAvailableTill(float64 value);
+	void emitUpdatedValue();
+
+	// This can animate for a very long time (like in music playing),
+	// so it should be a Basic, not a Simple animation, because
+	// Simple-s pauses mtproto responses/updates handling while playing.
+	anim::value a_value, a_availableTill;
+	Ui::Animations::Basic _valueAnimation, _availableTillAnimation;
+	Fn<void(float64,float64)> _valueChanged;
+
+	bool _inLoadingState = false;
+	Fn<void(bool)> _inLoadingStateChanged;
+
+	int64 _position = 0;
+	int64 _length = 0;
+	int64 _availableTill = -1;
+
+	bool _playing = false;
+
+};
+
+} // namespace View
+} // namespace Media