SDLFormUI

SDLFormUI is a lightweight C++ UI library built on SDL2 and SDL_ttf.
It provides a simple and efficient way to build modern user interfaces for games and tools without any external dependencies.

---

Features

• Header-only or modular structure: include a single header (SDLFormUI.hpp) or use the multi-file version.
• Built-in themes: light, dark, and high-contrast, with full customization options.
• Global configuration through UIConfig for font, style, and theme management.
• Straightforward API: create elements, handle events, and render them.
• Full input handling with focus management, keyboard navigation, and text editing (undo/redo).
• Safe resource management using RAII wrappers for SDL textures and surfaces.
• Works directly with SDL2 and SDL_ttf without any additional frameworks.

---

Components

Component	Description
UIButton	Clickable button with hover, press, and keyboard focus
UILabel	Static text label with automatic texture caching
UICheckbox	Boolean toggle linked to a bool& reference
UITextField	Single-line editable text box with selection and undo/redo
UIPopup	Generic popup container with rounded borders
UIDialog	Modal popup with title, message, and OK/Cancel buttons
UITheme, UIStyle, UIConfig	Manage the look and feel globally or per element

---

Example Usage

#include <SDL.h>
#include <SDL_ttf.h>
#include "SDLFormUI.hpp"

int main() {
    SDL_Init(SDL_INIT_VIDEO);
    TTF_Init();

    SDL_Window* window = SDL_CreateWindow("SDLFormUI Example",
        SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 800, 600, 0);
    SDL_Renderer* renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);

    // Load font and configure defaults
    TTF_Font* font = TTF_OpenFont("DejaVuSans.ttf", 16);
    UIConfig::setDefaultFont(font);
    UIConfig::setTheme(MakeDarkTheme());

    bool checked = false;
    std::string text = "Hello SDLFormUI";

    UIButton button("Click Me", 50, 50, 120, 40, font);
    UICheckbox checkbox("Enable feature", 50, 120, 200, 30, checked, font);
    UITextField textField("Label", 50, 180, 200, 40, text);

    bool running = true;
    SDL_Event e;

    while (running) {
        while (SDL_PollEvent(&e)) {
            if (e.type == SDL_QUIT)
                running = false;

            button.handleEvent(e);
            checkbox.handleEvent(e);
            textField.handleEvent(e);
        }

        button.update(0);
        checkbox.update(0);
        textField.update(0);

        SDL_SetRenderDrawColor(renderer, 20, 20, 20, 255);
        SDL_RenderClear(renderer);

        button.render(renderer);
        checkbox.render(renderer);
        textField.render(renderer);

        SDL_RenderPresent(renderer);
    }

    TTF_CloseFont(font);
    SDL_DestroyRenderer(renderer);
    SDL_DestroyWindow(window);
    TTF_Quit();
    SDL_Quit();
}