AAnimator.h

/*
 * AUI Framework - Declarative UI toolkit for modern C++20
 * Copyright (C) 2020-2025 Alex2772 and Contributors
 *
 * SPDX-License-Identifier: MPL-2.0
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */
 
#pragma once
 
#include <AUI/Common/AObject.h>
#include <AUI/Common/AVector.h>
#include <glm/gtc/matrix_transform.hpp>
#include "Curves/linear.h"
#include "Curves/bezier.h"
#include "Curves/viscous_fluid.h"
 
class AView;
class IRenderer;
 
using AAnimationCurve = std::function<float(float)>;
 
class API_AUI_VIEWS AAnimator {
private:
   AView* mView = nullptr;
 
   float mCurrentTheta = 0;
   float mDuration = 1;
 
   bool mIsPlaying = true;
   bool mIsRepeating = false;
 
   std::chrono::milliseconds mLastFrameTime = std::chrono::milliseconds(0);
 
   AAnimationCurve mCurve = aui::animation_curves::Standard();
 
protected:
   virtual void doAnimation(AView* view, float theta, IRenderer& render) {};
 
   virtual void doPostRender(AView* view, float theta, IRenderer& render) {};
 
   void translateToCenter(IRenderer& render);
   void translateToCorner(IRenderer& render);
 
   static void translateToCenter(AView* view, IRenderer& render);
   static void translateToCorner(AView* view, IRenderer& render);
 
public:
 
   void setCurve(const std::function<float(float)>& curve) {
       mCurve = curve;
   }
 
   void animate(AView* view, IRenderer& render);
   void postRender(AView* view, IRenderer& render);
   void pause();
 
   void setDuration(float period) {
       mDuration = period;
   }
 
   void setRepeating(bool repeating) {
       mIsRepeating = repeating;
   }
 
   [[nodiscard]] const AView* getView() const {
       return mView;
   }
 
   void setView(AView* view) {
       mView = view;
   }
 
   static _<AAnimator> combine(const AVector<_<AAnimator>>& animators);
};

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