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https://github.com/zhenyan121/Cubed.git
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79 lines
2.5 KiB
C++
79 lines
2.5 KiB
C++
#pragma once
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#include "Cubed/input/event.hpp"
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#include "Cubed/ui/anchor.hpp"
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#include <glm/glm.hpp>
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#include <memory>
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#include <vector>
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namespace Cubed {
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class Renderer;
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constexpr float NORMAL_BUTTON_WIDTH = 225.0f;
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constexpr float NORMAL_BUTTON_HEIGHT = 20.0f;
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constexpr float NORMAL_SLIDER_WIDTH = 225.0f;
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constexpr float NORMAL_SLIDER_HEIGHT = 20.0f;
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constexpr float NORMAL_TEXTFIELD_WIDTH = 225.0f;
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constexpr float NORMAL_TEXTFIELD_HEIGHT = 20.0f;
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enum class TraversalOrder { FRONT_TO_BACK, BACK_TO_FRONT };
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class Widget {
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public:
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Widget(const Widget&) = delete;
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Widget(Widget&&) = delete;
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Widget& operator=(const Widget&) = delete;
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Widget& operator=(Widget&&) = delete;
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Widget(Widget* parent);
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virtual ~Widget() = default;
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virtual void update(float dt);
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virtual void render(Renderer& renderer);
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virtual Widget& set_anchor(Anchor anchor);
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virtual Widget& set_offset(glm::ivec2 offset);
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virtual Widget& set_window_size(int width, int height);
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virtual Widget& set_visible(bool visible);
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// Returns the final display size
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virtual float width() const = 0;
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virtual float height() const = 0;
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virtual glm::vec2 pos() const;
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virtual bool handle_key_event(const KeyEvent& e);
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virtual bool handle_mouse_button_event(const MouseButtonEvent& e);
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virtual bool handle_mouse_wheel_event(const MouseWheelEvent& e);
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virtual bool handle_window_resize_event(const WindowResizeEvent& e);
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virtual bool handle_mouse_move_event(const MouseMoveEvent& e);
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virtual bool handle_text_input_event(const TextInputEvent& e);
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void set_order(TraversalOrder order);
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template <typename T, typename... Args> T& add_child(Args&&... args) {
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auto widget = std::make_unique<T>(std::forward<Args>(args)..., this);
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T& ref = *widget;
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m_children.emplace_back(std::move(widget));
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return ref;
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};
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protected:
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Widget* m_parent = nullptr;
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float m_window_height = 0;
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float m_window_width = 0;
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// Center is at the top-left corner, position is at the top-left corner
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Anchor m_anchor = Anchor::TOP_LEFT;
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bool m_visible = true;
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glm::ivec2 m_offset{0, 0};
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std::vector<std::unique_ptr<Widget>>& children();
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const std::vector<std::unique_ptr<Widget>>& children() const;
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virtual void on_update(float dt);
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virtual void on_render(Renderer& renderer);
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virtual glm::vec2 compute_position() const;
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private:
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std::vector<std::unique_ptr<Widget>> m_children;
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TraversalOrder m_order = TraversalOrder::BACK_TO_FRONT;
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};
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} // namespace Cubed
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