Update example to use TriColor

src/color.rs

@@ -187,6 +187,7 @@ impl TriColor {
     }
 }
 
+#[cfg(feature = "graphics")]
 impl PixelColor for TriColor {
     type Raw = ();
 }

src/epd2in13bc/mod.rs

@@ -7,10 +7,8 @@
 //!```rust, no_run
 //!# use embedded_hal_mock::*;
 //!# fn main() -> Result<(), MockError> {
-//!use embedded_graphics::{
-//!    pixelcolor::BinaryColor::On as Black, prelude::*, primitives::Line, style::PrimitiveStyle,
-//!};
-//!use epd_waveshare::{epd2in13bc::*, prelude::*};
+//!use embedded_graphics::{prelude::*, primitives::Line, style::PrimitiveStyle};
+//!use epd_waveshare::{epd2in13bc::*, prelude::*, color::TriColor};
 //!#
 //!# let expectations = [];
 //!# let mut spi = spi::Mock::new(&expectations);
@@ -25,28 +23,24 @@
 //!let mut epd = Epd2in13bc::new(&mut spi, cs_pin, busy_in, dc, rst, &mut delay)?;
 //!
 //!// Use display graphics from embedded-graphics
-//!// This display is for the black/white pixels
-//!let mut mono_display = Display2in13bc::default();
+//!// This display is for the black/white/chromatic pixels
+//!let mut tricolor_display = Display2in13bc::default();
 //!
-//!// Use embedded graphics for drawing
-//!// A black line
+//!// Use embedded graphics for drawing a black line
 //!let _ = Line::new(Point::new(0, 120), Point::new(0, 200))
-//!    .into_styled(PrimitiveStyle::with_stroke(Black, 1))
-//!    .draw(&mut mono_display);
+//!    .into_styled(PrimitiveStyle::with_stroke(TriColor::Black, 1))
+//!    .draw(&mut tricolor_display);
 //!
-//!// Use a second display for red/yellow
-//!let mut chromatic_display = Display2in13bc::default();
-//!
-//!// We use `Black` but it will be shown as red/yellow
+//!// We use `chromatic` but it will be shown as red/yellow
 //!let _ = Line::new(Point::new(15, 120), Point::new(15, 200))
-//!    .into_styled(PrimitiveStyle::with_stroke(Black, 1))
-//!    .draw(&mut chromatic_display);
+//!    .into_styled(PrimitiveStyle::with_stroke(TriColor::Chromatic, 1))
+//!    .draw(&mut tricolor_display);
 //!
 //!// Display updated frame
 //!epd.update_color_frame(
 //!    &mut spi,
-//!    &mono_display.buffer(),
-//!    &chromatic_display.buffer()
+//!    &tricolor_display.bw_buffer(),
+//!    &tricolor_display.chromatic_buffer()
 //!)?;
 //!epd.display_frame(&mut spi, &mut delay)?;
 //!

src/lib.rs

@@ -99,7 +99,7 @@ pub mod prelude {
     pub use crate::SPI_MODE;
 
     #[cfg(feature = "graphics")]
-    pub use crate::graphics::{Display, DisplayRotation, OctDisplay};
+    pub use crate::graphics::{Display, TriDisplay, DisplayRotation, OctDisplay};
 }
 
 /// Computes the needed buffer length. Takes care of rounding up in case width