Grid draws in the empty areas around the cells

elements/grid.go

@@ -40,6 +40,7 @@ type Grid struct {
 	stride     int
 	cellWidth  int
 	cellHeight int
+	gridBounds image.Rectangle
 
 	cursor image.Point
 
@@ -147,6 +148,11 @@ func (element *Grid) alloc () bool {
 	height := bounds.Dy() / element.cellHeight
 	oldWidth, oldHeight := element.Size()
 	if width == oldWidth && height == oldHeight { return false }
+	
+	element.gridBounds = image.Rect (
+		0, 0,
+		width * element.cellWidth,
+		height * element.cellHeight).Add(bounds.Min)
 
 	oldCells  := element.cells
 	heightLarger := height > oldHeight
@@ -249,5 +255,12 @@ func (element *Grid) draw (force bool) image.Rectangle {
 			element.bound(index))
 	}}
 
+	if force {
+		shapes.FillColorRectangleShatter (
+			element.core,
+			element.theme.Color(tomo.ColorBackground, element.state()),
+			bounds, element.gridBounds)
+	}
+
 	return bounds // FIXME
 }

elements/terminal.go

@@ -27,4 +27,9 @@ func (element *Terminal) handleResize () {
 		Background: tomo.ColorRed,
 		Foreground: tomo.ColorBlack,
 	})
+	element.Set(image.Pt(15, 10), Cell {
+		Rune: 'Y',
+		Background: tomo.ColorBrightBlue,
+		Foreground: tomo.ColorBlack,
+	})
 }