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Telegram/lib_ui/ui/effects/spoiler_mess.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 <crl/crl_time.h>
+
+namespace Images {
+struct CornersMaskRef;
+} // namespace Images
+
+namespace Ui {
+
+struct SpoilerMessDescriptor {
+	crl::time particleFadeInDuration = 0;
+	crl::time particleShownDuration = 0;
+	crl::time particleFadeOutDuration = 0;
+	float64 particleSizeMin = 0.;
+	float64 particleSizeMax = 0.;
+	float64 particleSpeedMin = 0.;
+	float64 particleSpeedMax = 0.;
+	int particleSpritesCount = 0;
+	int particlesCount = 0;
+	int canvasSize = 0;
+	int framesCount = 0;
+	crl::time frameDuration = 0;
+};
+
+struct SpoilerMessFrame {
+	not_null<const QImage*> image;
+	QRect source;
+};
+
+void FillSpoilerRect(
+	QPainter &p,
+	QRect rect,
+	const SpoilerMessFrame &frame,
+	QPoint originShift = {});
+
+void FillSpoilerRect(
+	QPainter &p,
+	QRect rect,
+	Images::CornersMaskRef mask,
+	const SpoilerMessFrame &frame,
+	QImage &cornerCache,
+	QPoint originShift = {});
+
+class SpoilerMessCached final {
+public:
+	SpoilerMessCached(
+		QImage image,
+		int framesCount,
+		crl::time frameDuration,
+		int canvasSize);
+	SpoilerMessCached(const SpoilerMessCached &mask, const QColor &color);
+
+	[[nodiscard]] SpoilerMessFrame frame(int index) const;
+	[[nodiscard]] SpoilerMessFrame frame() const; // Current by time.
+
+	[[nodiscard]] crl::time frameDuration() const;
+	[[nodiscard]] int framesCount() const;
+	[[nodiscard]] int canvasSize() const;
+
+	struct Validator {
+		crl::time frameDuration = 0;
+		int framesCount = 0;
+		int canvasSize = 0;
+	};
+	[[nodiscard]] QByteArray serialize() const;
+	[[nodiscard]] static std::optional<SpoilerMessCached> FromSerialized(
+		QByteArray data,
+		std::optional<Validator> validator = {});
+
+private:
+	QImage _image;
+	crl::time _frameDuration = 0;
+	int _framesCount = 0;
+	int _canvasSize = 0;
+
+};
+
+// Works with default frame duration and default frame count.
+class SpoilerAnimationManager;
+class SpoilerAnimation final {
+public:
+	explicit SpoilerAnimation(Fn<void()> repaint);
+	~SpoilerAnimation();
+
+	[[nodiscard]] int index(crl::time now, bool paused);
+
+	[[nodiscard]] Fn<void()> repaintCallback() const;
+
+private:
+	friend class SpoilerAnimationManager;
+
+	[[nodiscard]] bool repaint(crl::time now);
+
+	const Fn<void()> _repaint;
+	crl::time _accumulated = 0;
+	crl::time _last = 0;
+	bool _animating : 1 = false;
+	bool _scheduled : 1 = false;
+
+};
+
+[[nodiscard]] SpoilerMessCached GenerateSpoilerMess(
+	const SpoilerMessDescriptor &descriptor);
+
+void PreloadTextSpoilerMask();
+[[nodiscard]] const SpoilerMessCached &DefaultTextSpoilerMask();
+void PreloadImageSpoiler();
+[[nodiscard]] const SpoilerMessCached &DefaultImageSpoiler();
+
+} // namespace Ui