58 lines
1.4 KiB
C++
58 lines
1.4 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop version of Telegram messaging app, see https://telegram.org
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Telegram Desktop is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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It is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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In addition, as a special exception, the copyright holders give permission
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to link the code of portions of this program with the OpenSSL library.
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Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
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Copyright (c) 2014-2016 John Preston, https://desktop.telegram.org
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*/
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#pragma once
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class TWidget;
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namespace Ui {
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class FadeAnimation {
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public:
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FadeAnimation(TWidget *widget);
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bool paint(Painter &p);
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using FinishedCallback = Function<void>;
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void setFinishedCallback(FinishedCallback &&callback);
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void show();
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void hide();
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void fadeIn(int duration);
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void fadeOut(int duration);
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private:
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void startAnimation(int duration);
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void stopAnimation();
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void updateCallback();
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TWidget *_widget;
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FloatAnimation _animation;
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QPixmap _cache;
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bool _visible = false;
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FinishedCallback _finishedCallback;
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};
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} // namespace Ui
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