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Telegram/lib_ui/ui/paint/blobs.h

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+// This file is part of Desktop App Toolkit,
+// a set of libraries for developing nice desktop applications.
+//
+// For license and copyright information please follow this link:
+// https://github.com/desktop-app/legal/blob/master/LEGAL
+//
+#pragma once
+
+#include "ui/effects/animation_value.h"
+#include "ui/paint/blob.h"
+
+class Painter;
+
+namespace Ui::Paint {
+
+class Blobs final {
+public:
+	struct BlobData {
+		int segmentsCount = 0;
+		float minScale = 0;
+		float minRadius = 0;
+		float maxRadius = 0;
+		float speedScale = 0;
+		float alpha = 0;
+		float minSpeed = 0;
+		float maxSpeed = 0;
+	};
+
+	Blobs(
+		std::vector<BlobData> blobDatas,
+		float levelDuration,
+		float maxLevel);
+
+	void setRadiusesAt(
+		rpl::producer<Blob::Radiuses> &&radiuses,
+		int index);
+	Blob::Radiuses radiusesAt(int index);
+
+	void setLevel(float value);
+	void resetLevel();
+	void paint(QPainter &p, const QBrush &brush, float outerScale = 1.);
+	void updateLevel(crl::time dt);
+
+	[[nodiscard]] float maxRadius() const;
+	[[nodiscard]] int size() const;
+	[[nodiscard]] float64 currentLevel() const;
+
+	static constexpr auto kHideBlobsDuration = 2000;
+
+private:
+	void init();
+
+	const float _maxLevel;
+
+	std::vector<BlobData> _blobDatas;
+	std::vector<RadialBlob> _blobs;
+
+	anim::continuous_value _levelValue;
+
+	rpl::lifetime _lifetime;
+
+};
+
+} // namespace Ui::Paint