Use draw_key_polygon with geom_tile.

hadley · hadley · commit 8c878106c13a · 2016-01-25T16:18:37.000-06:00
Fixes #1484
diff --git a/NEWS.md b/NEWS.md
@@ -1,5 +1,8 @@
 # ggplot2 2.0.0.9000
 
+* `geom_tile()` uses `draw_key_polygon()` for better legend keys, including 
+  coloured outline (#1484).
+
 * The position of `...` in `geom_density2d()` has been adjusted so you can
   set the `n` parameter (#1485).
 
diff --git a/R/geom-tile.r b/R/geom-tile.r
@@ -96,5 +96,5 @@ GeomTile <- ggproto("GeomTile", GeomRect,
 
   required_aes = c("x", "y"),
 
-  draw_key = draw_key_rect
+  draw_key = draw_key_polygon
 )

Original file line number	Diff line number	Diff line change
`@@ -96,5 +96,5 @@ GeomTile <- ggproto("GeomTile", GeomRect,`
`96`	`96`
`97`	`97`	`required_aes = c("x", "y"),`
`98`	`98`
`99`		`- draw_key = draw_key_rect`
	`99`	`+ draw_key = draw_key_polygon`
`100`	`100`	`)`