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Telegram/SourceFiles/window/window_slide_animation.h

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+/*
+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/effects/animations.h"
+
+namespace Window {
+
+enum class SlideDirection {
+	FromRight,
+	FromLeft,
+};
+
+class SlideAnimation {
+public:
+	void paintContents(QPainter &p) const;
+
+	[[nodiscard]] float64 progress() const;
+
+	void setDirection(SlideDirection direction);
+	void setPixmaps(
+		const QPixmap &oldContentCache,
+		const QPixmap &newContentCache);
+	void setTopBarShadow(bool enabled);
+	void setTopSkip(int skip);
+	void setTopBarMask(const QPixmap &mask);
+	void setWithFade(bool withFade);
+
+	using RepaintCallback = Fn<void()>;
+	void setRepaintCallback(RepaintCallback &&callback);
+
+	using FinishedCallback = Fn<void()>;
+	void setFinishedCallback(FinishedCallback &&callback);
+
+	void start();
+
+	static const anim::transition &transition() {
+		return anim::easeOutCirc;
+	}
+
+private:
+	void animationCallback();
+
+	SlideDirection _direction = SlideDirection::FromRight;
+	int _topSkip = 0;
+	bool _topBarShadowEnabled = false;
+	bool _withFade = false;
+
+	mutable Ui::Animations::Simple _animation;
+	QPixmap _cacheUnder, _cacheOver;
+	QPixmap _mask;
+
+	RepaintCallback _repaintCallback;
+	FinishedCallback _finishedCallback;
+
+};
+
+} // namespace Window