UILayoutSolver.hpp

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//
//  CeresEngine - A game development framework
//
//  Created by Rogiel Sulzbach.
//  Copyright (c) 2018-2023 Rogiel Sulzbach. All rights reserved.
//
 
#pragma once
 
#include "UILayout.hpp"
 
#include "CeresEngine/Foundation/Constraint/ConstraintSolver.hpp"
 
namespace CeresEngine {
 
    class UILayoutSolver {
    private:
        UIView& mView;
 
        Constraint::ConstraintSolver mSolver;
 
        Vector<UILayoutConstraint> mConstraints;
 
        bool mNeedsRebuild = true;
 
    public:
        UILayoutSolver(UIView& view);
 
    public:
    public: // Constraints
        [[nodiscard]] Span<const UILayoutConstraint> getConstraints() const;
        void setConstraints(const Span<const UILayoutConstraint>& constraints);
        void setConstraints(Vector<UILayoutConstraint>&& constraints);
 
        void addConstraint(const UILayoutConstraint& constraint);
 
        void addConstraints(const Span<const UILayoutConstraint>& constraints);
 
        void removeConstraint(const UILayoutConstraint& constraint);
 
        void removeConstraints(const Span<const UILayoutConstraint>& constraints);
 
        [[nodiscard]] bool hasConstraint(const UILayoutConstraint& constraint) const;
 
    public:
        void solve(const UIRect& bounds);
 
        [[nodiscard]] UISize solveFittingSize(const UISize& targetSize);
 
    public:
        void setNeedsRebuild();
        void rebuildIfNeeded();
        void rebuild();
    };
 
} // namespace CeresEngine