57 lines
1.2 KiB
Rust
57 lines
1.2 KiB
Rust
//! GUI drawing capabilities.
|
|
|
|
use crate::durandal::image::Color;
|
|
|
|
/// An image possibly cached into a native driver's memory.
|
|
pub trait CacheImage
|
|
{
|
|
/// The width of the image.
|
|
fn w(&self) -> Coord;
|
|
|
|
/// The width of the image.
|
|
fn h(&self) -> Coord;
|
|
}
|
|
|
|
/// A native vector drawing area.
|
|
pub trait DrawArea
|
|
{
|
|
/// The native `CacheImage` type for this `DrawArea`.
|
|
type NativeImage: CacheImage;
|
|
|
|
/// The width of the entire area.
|
|
fn w(&self) -> Coord;
|
|
|
|
/// The height of the entire area.
|
|
fn h(&self) -> Coord;
|
|
|
|
/// Fills the entire screen with `cr`.
|
|
fn clear(&self, cr: impl Color);
|
|
|
|
/// Draws a rectangle `rect` of color `cr`.
|
|
fn rect(&self, rect: Rect, cr: impl Color);
|
|
|
|
/// Draws the Unicode `text` at `pos` stroked with color `cr`.
|
|
fn text(&self, pos: Point, text: &str, cr: impl Color);
|
|
|
|
/// Draws `im` at `pos`, starting from the top left column.
|
|
fn image(&self, pos: Point, im: &Self::NativeImage);
|
|
}
|
|
|
|
/// A type capable of representing any coordinate on any axis.
|
|
pub type Coord = i32;
|
|
|
|
/// A 2-dimensional point.
|
|
pub type Point = (Coord, Coord);
|
|
|
|
/// A 2-dimensional rectangle.
|
|
#[derive(Copy, Clone, Debug)]
|
|
pub struct Rect
|
|
{
|
|
pub x: Coord,
|
|
pub y: Coord,
|
|
pub w: Coord,
|
|
pub h: Coord,
|
|
}
|
|
|
|
// EOF
|