AAnimator.h

/*
 * AUI Framework - Declarative UI toolkit for modern C++20
 * Copyright (C) 2020-2024 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);
};