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Implement optimized DrawTarget::clear

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This commit is contained in:
Stefan Kerkmann 2020-06-05 18:07:45 +02:00
parent 7f678b7e9f
commit 8c45de7e90
1 changed files with 13 additions and 1 deletions
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14
src/graphics.rs
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@ -1,6 +1,6 @@
use crate::{Ili9341, Interface, OutputPin}; use crate::{Ili9341, Interface, OutputPin};
use core::fmt::Debug; use core::{fmt::Debug, iter};
use embedded_graphics::{ use embedded_graphics::{
drawable::Pixel, drawable::Pixel,
@ -26,6 +26,7 @@ where
fn size(&self) -> Size { fn size(&self) -> Size {
Size::new(self.width as u32, self.height as u32) Size::new(self.width as u32, self.height as u32)
} }
fn draw_pixel(&mut self, pixel: Pixel<Rgb565>) -> Result<(), Self::Error> { fn draw_pixel(&mut self, pixel: Pixel<Rgb565>) -> Result<(), Self::Error> {
let Pixel(pos, color) = pixel; let Pixel(pos, color) = pixel;
@ -41,6 +42,7 @@ where
&[RawU16::from(color).into_inner()], &[RawU16::from(color).into_inner()],
) )
} }
fn draw_rectangle( fn draw_rectangle(
&mut self, &mut self,
item: &Styled<Rectangle, PrimitiveStyle<Rgb565>>, item: &Styled<Rectangle, PrimitiveStyle<Rgb565>>,
@ -78,4 +80,14 @@ where
.map(|p| RawU16::from(p.1).into_inner()), .map(|p| RawU16::from(p.1).into_inner()),
) )
} }
fn clear(&mut self, color: Rgb565) -> Result<(), Self::Error> {
self.draw_iter(
0,
0,
(self.width - 1) as u16,
(self.height - 1) as u16,
iter::repeat(RawU16::from(color).into_inner()).take(self.width * self.height),
)
}
} }