Implement widget and button

src/gui/button.cpp

@@ -0,0 +1,48 @@
+#include "button.h"
+
+Button::Button(const std::string &text)
+{
+    _button_text.setString(text);
+    _button_text.setFillColor(sf::Color::Black);
+    _button_content.setFillColor(sf::Color::White);
+}
+
+void Button::input(const sf::Event& event)
+{
+    switch (event.type)
+    {
+    case sf::Event::MouseButtonPressed:
+        break;
+    }
+}
+
+void Button::update()
+{
+
+}
+
+void Button::draw(sf::RenderTarget& target, sf::RenderStates states) const
+{
+
+}
+
+void Button::setRect(const sf::IntRect& rect)
+{
+
+}
+
+void Button::setPosition(const sf::Vector2f& position)
+{
+
+}
+
+void Button::setText(const std::string& text)
+{
+
+}
+
+void Button::setCallback(std::function<void(void)> callback)
+{
+
+}
+

src/gui/button.h

@@ -0,0 +1,26 @@
+#pragma once
+
+#include "widget.h"
+#include <functional>
+#include <SFML/Graphics/RectangleShape.hpp>
+#include <SFML/Graphics/Text.hpp>
+
+class Button : public Widget
+{
+public:
+    Button(const std::string& text);
+
+    virtual void input(const sf::Event& event) override;
+    virtual void update() override;
+    virtual void draw(sf::RenderTarget& target, sf::RenderStates states) const override;
+    virtual void setRect(const sf::IntRect& rect) override;
+    virtual void setPosition(const sf::Vector2f& position) override;
+
+    void setText(const std::string& text);
+    void setCallback(std::function<void(void)> callback);
+
+private:
+    sf::RectangleShape _button_content;
+    sf::Text _button_text;
+};
+

src/gui/widget.cpp

@@ -0,0 +1,13 @@
+#include "widget.h"
+
+Widget::Widget(const std::shared_ptr<Widget>& parent) :
+    _parent(parent)
+{
+    if (_parent)
+        _parent->addChild(shared_from_this());
+}
+
+void Widget::addChild(const std::shared_ptr<Widget> &child)
+{
+    _children.emplace_back(child);
+}

src/gui/widget.h

@@ -0,0 +1,27 @@
+#pragma once
+
+#include <vector>
+#include <memory>
+#include <SFML/Window/Event.hpp>
+#include <SFML/Graphics/Drawable.hpp>
+
+class Widget : public sf::Drawable, std::enable_shared_from_this<Widget>
+{
+public:
+    Widget(const std::shared_ptr<Widget>& parent = nullptr);
+
+    virtual ~Widget() = default;
+
+    virtual void input(const sf::Event& event) = 0;
+    virtual void update() = 0;
+    virtual void draw(sf::RenderTarget& target, sf::RenderStates states) const = 0;
+    virtual void setRect(const sf::FloatRect& rect) = 0;
+    virtual void setPosition(const sf::Vector2f& position) = 0;
+
+protected:
+    void addChild(const std::shared_ptr<Widget>& child);
+
+    std::vector<std::shared_ptr<Widget>> _children;
+    const std::shared_ptr<Widget> _parent;
+};
+