ui/paint: rename the draw package

The draw package name clashes with the standard library draw package.

Signed-off-by: Elias Naur <mail@eliasnaur.com>

ui/internal/opconst/ops.go

@@ -14,7 +14,7 @@ const (
 	TypeLayer
 	TypeInvalidate
 	TypeImage
-	TypeDraw
+	TypePaint
 	TypeColor
 	TypeArea
 	TypePointerHandler
@@ -35,7 +35,7 @@ const (
 	TypeLayerLen          = 1
 	TypeRedrawLen         = 1 + 8
 	TypeImageLen          = 1 + 4*4
-	TypeDrawLen           = 1 + 4*4
+	TypePaintLen          = 1 + 4*4
 	TypeColorLen          = 1 + 4
 	TypeAreaLen           = 1 + 1 + 4*4
 	TypePointerHandlerLen = 1 + 1
@@ -57,7 +57,7 @@ func (t OpType) Size() int {
 		TypeLayerLen,
 		TypeRedrawLen,
 		TypeImageLen,
-		TypeDrawLen,
+		TypePaintLen,
 		TypeColorLen,
 		TypeAreaLen,
 		TypePointerHandlerLen,