Pixels Graphics Lib

Pixel buffer graphics and GUI library. It helps simplify window setup and creation, and event looping. It uses buffer graphics lib for drawing to the buffer.

Usage

Cargo

In your Cargo.toml file add

pixels-graphics-lib = { version = "0.20.2", features = [] }

Inside features you MUST put one of these:

Feature	Renderer	Window creation
pixels	Pixels	Winit v0.29
softbuffer	Softbuffer	Winit v0.30

Both of these use rwh06

This will control how the window is created and managed and how the buffer is rendered to the screen. The main differences are when the window is scaled to a non integer value (1.2 opposed than 2.0) then pixels will draw your content in the middle of the window, whereas softbuffer will draw in the top left. Additionally, pixels uses hardware scaling and softbuffer uses software scaling.

Code

You can use scenes using run_scenes (requires default feature scenes):

fn main() -> Result<()> {
    // Window prefs allow the size and position of the window to be saved and restored
    let window_prefs = WindowPreferences::new("com", "example", "app", 1)?;
    // Options contains scaling, UPS, etc
    let options = Options::default();
    // The switcher is how new scenes are created
    let switcher: SceneSwitcher<SceneResult, SceneName> =
        |style, scene_stack, new_scene| match new_scene {
            SceneName::Example => scene_stack.push(ExampleScene::new()),
        };
    let first_scene = ExampleScene::new();
    run_scenes(
        300,
        300,
        "Scenes Example",
        Some(window_prefs),
        switcher,
        first_scene,
        options,
        empty_pre_post()
    )?;
    Ok(())
}

// The scene name is the id used so the switcher knows which one to create
#[derive(Clone, Debug, PartialEq)]
enum SceneName {
    Example,
}

// After a scene is finished it can return values to it's parent using scene result
#[derive(Clone, Debug, PartialEq)]
enum SceneResult {}

struct ExampleScene {}

impl ExampleScene {
    pub fn new() -> Box<Self> {
        Box::new(Self {})
    }
}

impl Scene<SceneResult, SceneName> for ExampleScene {
    fn render(
        &mut self,
        graphics: &mut Graphics,
        mouse_xy: Coord,
        held_keys: &[KeyCode]) {
        todo!()
    }

    fn update(
        &mut self,
        timing: &Timing,
        mouse_xy: Coord,
        held_keys: &[KeyCode],
        window: &Window
    ) -> SceneUpdateResult<SceneResult, SceneName> {
        todo!()
    }
}

or a more low level with run

struct Example {}

fn main() -> Result<()> {
    let system = Box::new(Example {});
    run(240, 160, "Example", Box::new(system), Options::default())?;
    Ok(())
}

//Check `src/scenes.rs` for examples of implementing held keys, etc
impl System for Example {
    fn update(&mut self, timing: &Timing, window: &Window) {}
    fn render(&mut self, graphics: &mut Graphics) {}
}

Features

Default features: window_prefs, sound, serde, scenes

window_prefs

Save and restore window position and size

To use this the impl System must override System::window_prefs()

scenes

Enables Scene and run_scenes

Includes window_prefs

controller

• Adds gamepad support
• Adds gamepad state to Scene::update, Scene::render

controller_xinput

As above but using xinput, windows only

sound

Play music or sound effects

serde

Adds Serialize and Deserialize to most structs and enums

images

Loading and displaying of PNGs, JPEGs, BMPs

file_dialogs

Built in file selection dialogs, not recommended, use rfd

mint

Enables buffer-graphics-lib/mint, see Buffer graphics readme

notosan

Enables buffer-graphics-lib/notosans, see Buffer graphics readme

embedded

Enables buffer-graphics-lib/embedded, see Buffer graphics readme

pixels_serde and softbuffer_serde

Enables serde for the winit crate being used by pixels or softbuffer

Examples

Each example must be run with a renderer (pixels or softbuffer), like this:

cargo run --example basic --features "pixels"

or

cargo run --example relative_test --features "softbuffer"

Projects

Retro Games

A few retro games

Wordle

A wordle clone

ICI Image editor

Editor for IndexedImage, ICI files

USFX Tester

GUI for USFX

Fontpad

Program used to create fonts for Buffer graphics