FTXUI/include/ftxui/dom/node.hpp

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// Copyright 2020 Arthur Sonzogni. All rights reserved.
// Use of this source code is governed by the MIT license that can be found in
// the LICENSE file.
#ifndef FTXUI_DOM_NODE_HPP
#define FTXUI_DOM_NODE_HPP
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#include <memory>
#include <vector>
#include "ftxui/dom/requirement.hpp"
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#include "ftxui/screen/box.hpp"
#include "ftxui/screen/screen.hpp"
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namespace ftxui {
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using Element = std::shared_ptr<Node>;
using Elements = std::vector<std::shared_ptr<Node>>;
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class Node {
public:
Node();
Node(Elements children);
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virtual ~Node();
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// Step 1: Compute layout requirement. Tell parent what dimensions this
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// element wants to be.
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// Propagated from Children to Parents.
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virtual void ComputeRequirement();
Requirement requirement() { return requirement_; }
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// Step 2: Assign this element its final dimensions.
// Propagated from Parents to Children.
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virtual void SetBox(Box box);
// Step 3: Draw this element.
virtual void Render(Screen& screen);
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std::vector<Element> children;
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protected:
Requirement requirement_;
Box box_;
};
void Render(Screen& screen, Node* node);
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} // namespace ftxui
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#endif /* end of include guard: FTXUI_DOM_NODE_HPP */