Re-export backend types closes #377

Author: 38

plotters-bitmap/src/bitmap.rs

@@ -228,7 +228,11 @@ impl<'a, P: PixelFormat> DrawingBackend for BitMapBackend<'a, P> {
         point: BackendCoord,
         color: BackendColor,
     ) -> Result<(), DrawingErrorKind<BitMapBackendError>> {
-        if point.0 < 0 || point.1 < 0 || point.0 as u32 >= self.size.0 || point.1 as u32 >= self.size.1 {
+        if point.0 < 0
+            || point.1 < 0
+            || point.0 as u32 >= self.size.0
+            || point.1 as u32 >= self.size.1
+        {
             return Ok(());
         }
 

plotters/src/coord/ranged1d/types/numeric.rs

@@ -446,7 +446,7 @@ mod test {
 
     #[test]
     fn regression_test_issue_304_intmax_keypoint_no_panic() {
-        let coord : RangedCoordu32 = (0..u32::MAX).into();
+        let coord: RangedCoordu32 = (0..u32::MAX).into();
         let p = coord.key_points(10);
         assert!(p.len() > 0 && p.len() <= 10);
     }

plotters/src/lib.rs

@@ -873,5 +873,17 @@ pub mod prelude {
     pub use plotters_svg::SVGBackend;
 }
 
+/// This module contains some useful re-export of backend related types.
+pub mod backend {
+    pub use plotters_backend::DrawingBackend;
+    #[cfg(feature = "bitmap_backend")]
+    pub use plotters_bitmap::{
+        bitmap_pixel::{BGRXPixel, PixelFormat, RGBPixel},
+        BitMapBackend,
+    };
+    #[cfg(feature = "svg_backend")]
+    pub use plotters_svg::SVGBackend;
+}
+
 #[cfg(test)]
 mod test;