Fixed examples and more small improvements

examples/embedded_linux_epd1in54/src/main.rs

@@ -6,8 +6,10 @@ extern crate eink_waveshare_rs;
 
 
 use eink_waveshare_rs::{
+    epd1in54::{
         EPD1in54, 
         Buffer1in54,
+    },
     graphics::{Display, DisplayRotation},
     color::Color,
     WaveshareDisplay,

examples/embedded_linux_epd4in2/src/main.rs

@@ -6,8 +6,10 @@ extern crate eink_waveshare_rs;
 
 
 use eink_waveshare_rs::{
+    epd4in2::{
         EPD4in2,
         Buffer4in2,
+    },
     graphics::{Display, DisplayRotation},
     color::Color, 
     WaveshareDisplay,
@@ -162,7 +164,7 @@ fn run() -> Result<(), std::io::Error> {
 
 
     println!("Now test new graphics with default rotation and some special stuff:");
-    let mut display = DisplayEink42BlackWhite::default();
+    display.clear_buffer(Color::White);
 
     // draw a analog clock
     display.draw(

src/color.rs

@@ -48,7 +48,7 @@ impl Color {
     }
 
     // Inverses the given color from Black to White or from White to Black
-    fn inverse_color(color: &Color) -> Color {
+    pub(crate) fn inverse_color(color: &Color) -> Color {
         match color {
             Color::White => Color::Black,
             Color::Black => Color::White,

src/epd1in54/mod.rs

@@ -40,7 +40,8 @@ use traits::{WaveshareDisplay};
 
 use interface::DisplayInterface;
 
-pub mod graphics;
+mod graphics;
+pub use epd1in54::graphics::Buffer1in54BlackWhite as Buffer1in54;
 
 /// EPD1in54 driver
 ///

src/epd2in9/mod.rs

@@ -19,9 +19,9 @@
 //! epd4in2.sleep();
 //! ```
 
-const WIDTH: u32 = 128;
+pub const WIDTH: u32 = 128;
-const HEIGHT: u32 = 296;
+pub const HEIGHT: u32 = 296;
-const DEFAULT_BACKGROUND_COLOR: Color = Color::White;
+pub const DEFAULT_BACKGROUND_COLOR: Color = Color::White;
 
 use hal::{
     blocking::{delay::*, spi::Write},

src/epd4in2/constants.rs

@@ -1,8 +1,8 @@
 use color::Color;
 
-pub(crate) const WIDTH: u32 = 400;
+pub const WIDTH: u32 = 400;
-pub(crate) const HEIGHT: u32 = 300;
+pub const HEIGHT: u32 = 300;
-pub(crate) const DEFAULT_BACKGROUND_COLOR: Color = Color::White;
+pub const DEFAULT_BACKGROUND_COLOR: Color = Color::White;
 
 pub(crate) const LUT_VCOM0: [u8; 44] = [
 0x00, 0x17, 0x00, 0x00, 0x00, 0x02,        

src/epd4in2/mod.rs

@@ -56,14 +56,15 @@ use interface::DisplayInterface;
 
 //The Lookup Tables for the Display
 pub(crate) mod constants; //TODO: Limit to crate::drawing
-use self::constants::*;
+pub use self::constants::*;
 
 use color::Color;
 
 pub(crate) mod command;
 use self::command::Command;
 
-pub mod graphics;
+mod graphics;
+pub use self::graphics::Buffer4in2;
 
 
 /// EPD4in2 driver

src/graphics.rs

@@ -43,6 +43,12 @@ impl<'a> Display<'a> {
         &self.buffer
     }
 
+    pub fn clear_buffer(&mut self, background_color: Color) {
+        for elem in &mut self.buffer.iter_mut() {
+            *elem = background_color.get_byte_value();
+        }
+    }
+
     pub fn set_rotation(&mut self, rotation: DisplayRotation) {
         self.rotation = rotation;
     }
@@ -120,7 +126,27 @@ pub(crate) fn rotation(x: u32, y: u32, width: u32, height: u32, rotation: Displa
 
 #[cfg(test)]
 mod tests {
-    use super::{DisplayRotation, outside_display, rotation};
+    use super::{DisplayRotation, outside_display, rotation, Display};
+    use color::Color;
+
+    #[test]
+    fn buffer_clear() {
+        use epd4in2::constants::{WIDTH, HEIGHT};
+
+        let mut buffer = [Color::Black.get_byte_value(); WIDTH as usize / 8 * HEIGHT as usize];
+        let mut display = Display::new(WIDTH, HEIGHT, &mut buffer);
+
+        for &byte in display.buffer.iter() {
+            assert_eq!(byte, Color::Black.get_byte_value());
+        }
+
+        display.clear_buffer(Color::White);
+
+        for &byte in display.buffer.iter() {
+            assert_eq!(byte, Color::White.get_byte_value());
+        }        
+    }
+
 
     #[test]
     fn rotation_overflow() {

src/lib.rs

@@ -63,26 +63,13 @@ pub mod color;
 mod interface;
 
 #[cfg(feature = "epd4in2")]
-mod epd4in2;
+pub mod epd4in2;
-#[cfg(feature = "epd4in2")]
-pub use epd4in2::EPD4in2;
-#[cfg(feature = "epd4in2")]
-pub use epd4in2::graphics::Buffer4in2;
 
 #[cfg(feature = "epd1in54")]
-mod epd1in54;
+pub mod epd1in54;
-#[cfg(feature = "epd1in54")]
-pub use epd1in54::EPD1in54;
-#[cfg(feature = "epd1in54")]
-pub use epd1in54::graphics::Buffer1in54BlackWhite as Buffer1in54;
-
 
 #[cfg(feature = "epd2in9")]
-mod epd2in9;
+pub mod epd2in9;
-///2in9 eink
-#[cfg(feature = "epd2in9")]
-///2in9 eink
-pub use epd2in9::EPD2in9;
 
 #[cfg(any(feature = "epd1in54", feature = "epd2in9"))]
 pub(crate) mod type_a;