129 lines
4.6 KiB
C++
129 lines
4.6 KiB
C++
#ifndef FRONTEND_GUI_GUI_HPP_
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#define FRONTEND_GUI_GUI_HPP_
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#include <queue>
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#include <memory>
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#include <vector>
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#include <string>
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#include <glm/glm.hpp>
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#include <functional>
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#include <unordered_map>
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#include "../../delegates.h"
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class Viewport;
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class GfxContext;
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class Assets;
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class Camera;
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/*
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Some info about padding and margin.
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Padding is element inner space, margin is outer
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glm::vec4 usage:
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x - left
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y - top
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z - right
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w - bottom
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Outer element
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+======================================================================+
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| . . . . |
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| .padding.y . . . |
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| padding.x . . . . padding.z |
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|- - - - - - + - - - - - + - - - - - - - - - -+- - - - - + - - - - - - |
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| . . . . |
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| . .margin.y . . |
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| .margin.x . . margin.z. |
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|- - - - - - + - - - - - +====================+- - - - - + - - - - - - |
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| . | Inner element | . |
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|- - - - - - + - - - - - +====================+- - - - - + - - - - - - |
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| . . . . |
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| . .margin.w . . |
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| . . . . |
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|- - - - - - + - - - - - + - - - - - - - - - -+- - - - - + - - - - - - |
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| . . . . |
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| .padding.w . . . |
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| . . . . |
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+======================================================================+
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*/
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namespace gui {
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class UINode;
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class Container;
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class Menu;
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/// @brief The main UI controller
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class GUI {
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std::shared_ptr<Container> container;
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std::shared_ptr<UINode> hover = nullptr;
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std::shared_ptr<UINode> pressed = nullptr;
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std::shared_ptr<UINode> focus = nullptr;
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std::unordered_map<std::string, std::shared_ptr<UINode>> storage;
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std::unique_ptr<Camera> uicamera;
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std::shared_ptr<Menu> menu;
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std::queue<runnable> postRunnables;
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void actMouse(float delta);
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void actFocused();
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public:
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GUI();
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~GUI();
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/// @brief Get the main menu (Menu) node
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std::shared_ptr<Menu> getMenu();
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/// @brief Get current focused node
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/// @return focused node or nullptr
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std::shared_ptr<UINode> getFocused() const;
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/// @brief Check if all user input is caught by some element like TextBox
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bool isFocusCaught() const;
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/// @brief Main input handling and logic update method
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/// @param delta delta time
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/// @param viewport window size
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void act(float delta, const Viewport& viewport);
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/// @brief Draw all visible elements on main container
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/// @param pctx parent graphics context
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/// @param assets active assets storage
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void draw(const GfxContext* pctx, Assets* assets);
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/// @brief Add element to the main container
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/// @param node UI element
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void add(std::shared_ptr<UINode> node);
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/// @brief Remove node from the main container
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void remove(std::shared_ptr<UINode> node) noexcept;
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/// @brief Store node in the GUI nodes dictionary
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/// (does not add node to the main container)
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/// @param name node key
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/// @param node target node
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void store(std::string name, std::shared_ptr<UINode> node);
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/// @brief Get node from the GUI nodes dictionary
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/// @param name node key
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/// @return stored node or nullptr
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std::shared_ptr<UINode> get(std::string name) noexcept;
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/// @brief Remove node from the GUI nodes dictionary
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/// @param name node key
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void remove(std::string name) noexcept;
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/// @brief Set node as focused
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/// @param node new focused node or nullptr to remove focus
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void setFocus(std::shared_ptr<UINode> node);
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/// @brief Get the main container
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/// @deprecated
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std::shared_ptr<Container> getContainer() const;
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void onAssetsLoad(Assets* assets);
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void postRunnable(runnable callback);
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};
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}
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#endif // FRONTEND_GUI_GUI_HPP_
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