switch BasicImage to use an associated type for the pixel type

this ends up with less repetition when using BasicImage elsewhere
which is nice

ggdt/src/graphics/basicimage.rs

@@ -19,69 +19,76 @@ where PixelType: PrimInt + Unsigned {
 /// Trait that provides "bit-depth-agnostic" access to bitmap drawing operations. This is useful for implementing
 /// drawing functionality that is to be made generic across all supported bitmap types and is not specific to
 /// any one pixel-depth. Note that this does not provide cross-bit-depth drawing support.
-pub trait BasicImage<PixelType>
-where PixelType: PrimInt + Unsigned {
+pub trait BasicImage {
+	type PixelType: PrimInt + Unsigned;
+
 	/// Returns the width of the bitmap in pixels.
 	fn width(&self) -> u32;
 
 	/// Returns the height of the bitmap in pixels.
 	fn height(&self) -> u32;
 
+	/// Returns a rect representing the full bitmap boundaries, ignoring the current clipping
+	/// region set on this bitmap.
+	fn full_bounds(&self) -> Rect;
+
 	/// Returns the bit-depth of this bitmap's pixels.
 	fn bpp(&self) -> usize {
-		std::mem::size_of::<PixelType>() * 8
+		std::mem::size_of::<Self::PixelType>() * 8
 	}
 
 	/// Fills the entire bitmap with the given color.
-	fn clear(&mut self, color: PixelType);
+	fn clear(&mut self, color: Self::PixelType);
 
 	/// Sets the pixel at the given coordinates to the color specified. If the coordinates lie
 	/// outside of the bitmaps clipping region, no pixels will be changed.
-	fn set_pixel(&mut self, x: i32, y: i32, color: PixelType);
+	fn set_pixel(&mut self, x: i32, y: i32, color: Self::PixelType);
 
 	/// Gets the pixel at the given coordinates. If the coordinates lie outside of the bitmaps
 	/// clipping region, None is returned.
-	fn get_pixel(&self, x: i32, y: i32) -> Option<PixelType>;
+	fn get_pixel(&self, x: i32, y: i32) -> Option<Self::PixelType>;
 
 	/// Draws a line from x1,y1 to x2,y2.
-	fn line(&mut self, x1: i32, y1: i32, x2: i32, y2: i32, color: PixelType);
+	fn line(&mut self, x1: i32, y1: i32, x2: i32, y2: i32, color: Self::PixelType);
 
 	/// Draws a horizontal line from x1,y to x2,y.
-	fn horiz_line(&mut self, x1: i32, x2: i32, y: i32, color: PixelType);
+	fn horiz_line(&mut self, x1: i32, x2: i32, y: i32, color: Self::PixelType);
 
 	/// Draws a vertical line from x,y1 to x,y2.
-	fn vert_line(&mut self, x: i32, y1: i32, y2: i32, color: PixelType);
+	fn vert_line(&mut self, x: i32, y1: i32, y2: i32, color: Self::PixelType);
 
 	/// Draws an empty box (rectangle) using the points x1,y1 and x2,y2 to form the box to be
 	/// drawn, assuming they are specifying the top-left and bottom-right corners respectively.
-	fn rect(&mut self, x1: i32, y1: i32, x2: i32, y2: i32, color: PixelType);
+	fn rect(&mut self, x1: i32, y1: i32, x2: i32, y2: i32, color: Self::PixelType);
 
 	/// Draws a filled box (rectangle) using the points x1,y1 and x2,y2 to form the box to be
 	/// drawn, assuming they are specifying the top-left and bottom-right corners respectively.
-	fn filled_rect(&mut self, x1: i32, y1: i32, x2: i32, y2: i32, color: PixelType);
+	fn filled_rect(&mut self, x1: i32, y1: i32, x2: i32, y2: i32, color: Self::PixelType);
 
 	/// Draws the outline of a circle formed by the center point and radius given.
-	fn circle(&mut self, center_x: i32, center_y: i32, radius: u32, color: PixelType);
+	fn circle(&mut self, center_x: i32, center_y: i32, radius: u32, color: Self::PixelType);
 
 	/// Draws a filled circle formed by the center point and radius given.
-	fn filled_circle(&mut self, center_x: i32, center_y: i32, radius: u32, color: PixelType);
+	fn filled_circle(&mut self, center_x: i32, center_y: i32, radius: u32, color: Self::PixelType);
 
 	fn blit_region(
 		&mut self,
-		method: BasicBlitMethod<PixelType>,
+		method: BasicBlitMethod<Self::PixelType>,
 		src: &Self,
 		src_region: &Rect,
 		dest_x: i32,
 		dest_y: i32
 	);
 
-	fn blit(&mut self, method: BasicBlitMethod<PixelType>, src: &Self, x: i32, y: i32) {
+	fn blit(&mut self, method: BasicBlitMethod<Self::PixelType>, src: &Self, x: i32, y: i32) {
 		let src_region = Rect::new(0, 0, src.width(), src.height());
 		self.blit_region(method, src, &src_region, x, y);
 	}
 }
 
-impl BasicImage<u8> for indexed::Bitmap {
+impl BasicImage for indexed::Bitmap {
+	type PixelType = u8;
+
 	#[inline]
 	fn width(&self) -> u32 {
 		self.width()