steering-wheel-rpi/include/widgets.h

57 lines
1.1 KiB
C++

#pragma once
#include <SDL2/SDL.h>
#include <SDL2/SDL_ttf.h>
#include <optional>
#include <string>
class Widget {
public:
Widget(SDL_Renderer* renderer, SDL_Rect dest_rect);
virtual void update_rect(SDL_Rect new_rect);
virtual void draw() = 0;
protected:
SDL_Renderer* renderer;
SDL_Rect dest_rect;
};
class TextureWidget : public Widget {
public:
TextureWidget(SDL_Renderer* renderer, SDL_Rect dest_rect,
std::optional<SDL_Texture*> texture);
~TextureWidget();
virtual void draw() override;
void update_texture(SDL_Texture* new_texture);
private:
std::optional<SDL_Texture*> texture;
};
class ImageWidget : public TextureWidget {
public:
ImageWidget(SDL_Renderer* renderer, SDL_Rect dest_rect,
const std::string& path);
};
class TextWidget : public TextureWidget {
public:
TextWidget(SDL_Renderer* renderer, SDL_Rect dest_rect,
const std::string& font_path,
const std::string& initial_text = "");
~TextWidget();
void update_text(const std::string& new_text);
protected:
TTF_Font* font;
std::string text;
SDL_Texture* generate_text(const std::string& text);
};