abodelot/sfml-widgets

A simple GUI module for SFML

SFML Widgets

A simple GUI module for SFML.

• Spritesheet based: a single image file to customize widget style
• Simple events: set a std::function<void(void)> callback on widgets to trigger functions on UI events.
• Layouts: automatically align content without computing positions

• Author: Alexandre Bodelot alexandre.bodelot@gmail.com
• License: MIT License (See LICENSE file)

Run make to build the library (lib/libsfml-widgets.a) and the demo program.

You can then run the demo: ./sfml-widgets-demo

Setup

1. Load resources (font, spritesheet) in static class gui::Theme
2. Use gui::Menu to create a new sfml-widgets menu. It needs to be connected to your SFML render window, which is given to the constructor.
3. Create widgets, add theme to the menu and define callbacks on them. NOTE: widgets must be dynamically allocated (new). The gui::Menu destructor will take care of deallocating widgets.

Minimal example:

#include <iostream>
#include <SFML/Graphics.hpp>
#include "Gui/Gui.hpp"

int main()
{
    sf::RenderWindow app(sf::VideoMode(800, 600), "SFML Widgets", sf::Style::Close);

    // Declare menu
    gui::Menu menu(app);

    gui::Theme::loadFont("demo/tahoma.ttf");
    gui::Theme::loadTexture("demo/texture-default.png");

    // Create some button widget
    gui::Button* button = new gui::Button("My button");

    // Insert button into menu
    menu.add(button);

    // Define a callback
    button->setCallback([] {
        std::cout << "click!" << std::endl;
    });

    // Start the application loop
    while (app.isOpen())
    {
        // Process events
        sf::Event event;
        while (app.pollEvent(event))
        {
            // Send events to the menu
            menu.onEvent(event);

            if (event.type == sf::Event::Closed)
                app.close();
        }

        // Optional: clear window with theme background color
        app.clear(gui::Theme::windowBgColor);

        // Render menu
        app.draw(menu);

        // Update the window
        app.display();
    }

    return 0;
}

demo/demo.cpp conains a more complex example, featuring all widgets.

Widgets

gui::Button

A simple press button.

gui::Checkbox

A button with enabled/disabled state.

gui::Image

Displays an SFML texture.

It's a simple wrapper around sf::Texture, to display a texture as part of the UI.

gui::Label

A static text element.

It's a simple wrapper around sf::Text, to display a text as part of the UI.

gui::OptionsBox

A list of label/value pairs.

Use templates to define value type. Example: gui::OptionsBox<sf::Color>.

Add value with: optionsBox->addItem("Red", sf::Color::Red);

gui::ProgressBar

A simple horizontal or vertical progress bar.

• orientation: gui::Horizontal or gui::Vertical
• labelPlacement: gui::LabelNone, or gui::LabelOver, or gui::Outside

gui::Slider

Provides an horizontal or vertical slider.

• orientation: gui::Horizontal or gui::Vertical

gui::TextBox

A one-line text editor.

It supports text cursor, and text selection (with mouse or keyboard shortcuts).

Layouts

Layouts are containers for widgets. They are also widgets themselves, and can be nested!

gui::Menu

The special, unique root layout. It behave like a VBoxLayout.

gui::HBoxLayout

Lines up widgets horizontally.

Use layout->add(widget) to append a widget on a new line.

gui::VBoxLayout

Lines up widgets vertically.

Use layout->add(widget) to append a widget on a new column.

gui::FormLayout

Manages forms of input widgets and their associated labels.

Use layout->addRow("my label", widget) to add a new line with label on the left, and widget on the right.

Theming

To customize the theme, you can:

• Change the theme values (padding, color, font, etc.) defined the static class gui::Theme.
• Use a custom spritesheet image.