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|
use crate::core::Color;
use crate::graphics::compositor::{self, Information, SurfaceError};
use crate::graphics::{Error, Primitive, Viewport};
use crate::{Backend, Renderer, Settings};
use raw_window_handle::{HasRawDisplayHandle, HasRawWindowHandle};
use std::marker::PhantomData;
use std::num::NonZeroU32;
pub struct Compositor<Theme> {
clip_mask: tiny_skia::ClipMask,
_theme: PhantomData<Theme>,
}
pub struct Surface {
window: softbuffer::Surface,
}
impl<Theme> crate::graphics::Compositor for Compositor<Theme> {
type Settings = Settings;
type Renderer = Renderer<Theme>;
type Surface = Surface;
fn new<W: HasRawWindowHandle + HasRawDisplayHandle>(
settings: Self::Settings,
_compatible_window: Option<&W>,
) -> Result<(Self, Self::Renderer), Error> {
let (compositor, backend) = new(settings);
Ok((compositor, Renderer::new(backend)))
}
fn create_surface<W: HasRawWindowHandle + HasRawDisplayHandle>(
&mut self,
window: &W,
width: u32,
height: u32,
) -> Surface {
let platform = unsafe { softbuffer::Context::new(window) }
.expect("Create softbuffer context");
let mut window = unsafe { softbuffer::Surface::new(&platform, window) }
.expect("Create softbuffer surface");
window
.resize(
NonZeroU32::new(width).unwrap(),
NonZeroU32::new(height).unwrap(),
)
.expect("Resize surface");
Surface { window }
}
fn configure_surface(
&mut self,
surface: &mut Surface,
width: u32,
height: u32,
) {
surface
.window
.resize(
NonZeroU32::new(width).unwrap(),
NonZeroU32::new(height).unwrap(),
)
.expect("Resize surface");
}
fn fetch_information(&self) -> Information {
Information {
adapter: String::from("CPU"),
backend: String::from("tiny-skia"),
}
}
fn present<T: AsRef<str>>(
&mut self,
renderer: &mut Self::Renderer,
surface: &mut Self::Surface,
viewport: &Viewport,
background_color: Color,
overlay: &[T],
) -> Result<(), SurfaceError> {
renderer.with_primitives(|backend, primitives| {
present(
self,
backend,
surface,
primitives,
viewport,
background_color,
overlay,
)
})
}
}
pub fn new<Theme>(settings: Settings) -> (Compositor<Theme>, Backend) {
// TOD
(
Compositor {
clip_mask: tiny_skia::ClipMask::new(),
_theme: PhantomData,
},
Backend::new(settings),
)
}
pub fn present<Theme, T: AsRef<str>>(
compositor: &mut Compositor<Theme>,
backend: &mut Backend,
surface: &mut Surface,
primitives: &[Primitive],
viewport: &Viewport,
background_color: Color,
overlay: &[T],
) -> Result<(), compositor::SurfaceError> {
let physical_size = viewport.physical_size();
let mut buffer = surface.window.buffer_mut().expect("Get window buffer");
let drawn = backend.draw(
&mut tiny_skia::PixmapMut::from_bytes(
bytemuck::cast_slice_mut(&mut buffer),
physical_size.width,
physical_size.height,
)
.expect("Create pixel map"),
&mut compositor.clip_mask,
primitives,
viewport,
background_color,
overlay,
);
if drawn {
let _ = buffer.present();
}
Ok(())
}
|
