Method force_present_canvas

std/src/gfx/lcd/buffered/mod.rs:300–326

Flushes any pending damaged area to the LCD.

(&mut self)

    /// Flushes any pending damaged area to the LCD.
    fn force_present_canvas(&mut self) -> io::Result<()> {
        let (x1y1, x2y2) = match self.damage {
            None => return Ok(()),
            Some(damage) => damage,
        };

        let mut data = LcdSize::between(x1y1, x2y2).new_buffer(self.stride);
        for y in x1y1.y..(x2y2.y + 1) {
            for x in x1y1.x..(x2y2.x + 1) {
                let offset = self.fb_addr(x, y);
                data.extend_from_slice(&self.fb[offset..offset + self.stride]);
            }
        }
        debug_assert_eq!(
            {
                let (_xy, size) = to_xy_size(x1y1, x2y2);
                size.width * size.height * self.stride
            },
            data.len()
        );

        self.lcd.set_data(x1y1, x2y2, &data)?;

        self.damage = None;

        Ok(())
    }
}

impl<L> Drop for BufferedLcd<L>