Method open_line

std/src/console/graphics.rs:424–447

Moves the cursor to beginning of the next line, scrolling the console if necessary. Does not clear nor draw the cursor.

(&mut self)

    ///
    /// Does not clear nor draw the cursor.
    fn open_line(&mut self) -> io::Result<()> {
        if self.cursor_pos.y < self.size_chars.y - 1 {
            self.cursor_pos.x = 0;
            self.cursor_pos.y += 1;
            return Ok(());
        }

        let text_height: u16 = self.size_chars.y.clamped_mul(self.glyph_size.height);
        let x1y1 = PixelsXY::new(0, self.glyph_size.height.clamped_into());
        let x2y2 = PixelsXY::new(0, 0);
        let size = SizeInPixels::new(self.size_pixels.width, text_height - self.glyph_size.height);

        self.raster_ops.set_draw_color(self.bg_color);
        self.raster_ops.move_pixels(x1y1, x2y2, size)?;
        if text_height < self.size_pixels.height {
            let xy = PixelsXY::new(0, text_height.clamped_into());
            let size =
                SizeInPixels::new(self.size_pixels.width, self.size_pixels.height - text_height);
            self.raster_ops.draw_rect_filled(xy, size)?;
        }

        self.cursor_pos.x = 0;
        Ok(())
    }

    /// Renders the given text at the current cursor position, with wrapping and
    /// scrolling if necessary.