diff --git a/artist/rectangle.go b/artist/rectangle.go
index a3fd714..5adbe72 100644
--- a/artist/rectangle.go
+++ b/artist/rectangle.go
@@ -2,6 +2,7 @@ package artist
 
 import "image"
 import "git.tebibyte.media/sashakoshka/tomo/canvas"
+import "git.tebibyte.media/sashakoshka/tomo/shatter"
 
 // Paste transfers one canvas onto another, offset by the specified point.
 func Paste (
@@ -75,6 +76,23 @@ func FillRectangleClip (
 	return
 }
 
+// FillRectangleShatter shatters a bounding rectangle and draws its tiles in one
+// fell swoop.
+func FillRectangleShatter (
+	destination canvas.Canvas,
+	source Pattern,
+	glass image.Rectangle,
+	rocks ...image.Rectangle,
+) (
+	updatedRegions []image.Rectangle,
+) {
+	tiles := shatter.Shatter(glass, rocks...)
+	for _, tile := range tiles {
+		FillRectangleClip(destination, source, glass, tile)
+	}
+	return tiles
+}
+
 // StrokeRectangle draws the outline of a rectangle with the specified line
 // weight and pattern.
 func StrokeRectangle (
diff --git a/elements/basic/container.go b/elements/basic/container.go
index 5fb9906..b4bb5b0 100644
--- a/elements/basic/container.go
+++ b/elements/basic/container.go
@@ -6,7 +6,6 @@ import "git.tebibyte.media/sashakoshka/tomo/theme"
 import "git.tebibyte.media/sashakoshka/tomo/config"
 import "git.tebibyte.media/sashakoshka/tomo/canvas"
 import "git.tebibyte.media/sashakoshka/tomo/artist"
-import "git.tebibyte.media/sashakoshka/tomo/shatter"
 import "git.tebibyte.media/sashakoshka/tomo/layouts"
 import "git.tebibyte.media/sashakoshka/tomo/elements"
 import "git.tebibyte.media/sashakoshka/tomo/elements/core"
@@ -225,14 +224,11 @@ func (element *Container) redoAll () {
 	for index, entry := range element.children {
 		rocks[index] = entry.Bounds
 	}
-	tiles := shatter.Shatter(element.Bounds(), rocks...)
 	pattern := element.theme.Pattern (
 		theme.PatternBackground,
 		theme.PatternState { })
-	for _, tile := range tiles {
-		artist.FillRectangleClip (
-			element.core, pattern, element.Bounds(), tile)
-	}
+	artist.FillRectangleShatter (
+		element.core, pattern, element.Bounds(), rocks...)
 
 	// cut our canvas up and give peices to child elements
 	for _, entry := range element.children {
diff --git a/elements/basic/list.go b/elements/basic/list.go
index 0219e76..7fdaa87 100644
--- a/elements/basic/list.go
+++ b/elements/basic/list.go
@@ -7,7 +7,6 @@ import "git.tebibyte.media/sashakoshka/tomo/theme"
 import "git.tebibyte.media/sashakoshka/tomo/config"
 import "git.tebibyte.media/sashakoshka/tomo/canvas"
 import "git.tebibyte.media/sashakoshka/tomo/artist"
-import "git.tebibyte.media/sashakoshka/tomo/shatter"
 import "git.tebibyte.media/sashakoshka/tomo/elements/core"
 
 // List is an element that contains several objects that a user can select.
@@ -461,9 +460,6 @@ func (element *List) draw () {
 		innerBounds.Dx(), element.contentHeight,
 	).Add(innerBounds.Min).Intersect(innerBounds)
 	pattern := element.theme.Pattern(theme.PatternSunken, state)
-	tiles := shatter.Shatter(bounds, covered)
-	for _, tile := range tiles {
-		artist.FillRectangleClip (
-			element.core, pattern, bounds, tile)
-	}
+	artist.FillRectangleShatter (
+		element.core, pattern, bounds, covered)
 }
diff --git a/elements/fun/piano.go b/elements/fun/piano.go
index a3ea0a0..e116c1d 100644
--- a/elements/fun/piano.go
+++ b/elements/fun/piano.go
@@ -5,7 +5,6 @@ import "git.tebibyte.media/sashakoshka/tomo/input"
 import "git.tebibyte.media/sashakoshka/tomo/theme"
 import "git.tebibyte.media/sashakoshka/tomo/config"
 import "git.tebibyte.media/sashakoshka/tomo/artist"
-import "git.tebibyte.media/sashakoshka/tomo/shatter"
 import "git.tebibyte.media/sashakoshka/tomo/elements/core"
 import "git.tebibyte.media/sashakoshka/tomo/elements/fun/music"
 
@@ -304,11 +303,8 @@ func (element *Piano) draw () {
 	}
 	
 	pattern := element.theme.Pattern(theme.PatternPinboard, state)
-	tiles := shatter.Shatter(element.Bounds(), element.contentBounds)
-	for _, tile := range tiles {
-		artist.FillRectangleClip (
-			element.core, pattern, element.Bounds(), tile)
-	}
+	artist.FillRectangleShatter (
+		element.core, pattern, element.Bounds(), element.contentBounds)
 }
 
 func (element *Piano) drawFlat (