Begin adding widget constraints

exhibit/list_widget.go

@@ -95,8 +95,10 @@ func (l *ListWidget) Render() [][]Cell {
 		}
 	}
 
-	l.lastSize.X = sx
+	l.size.X = sx
-	l.lastSize.Y = sy
+	l.size.Y = sy
+	l.lastSize = l.size
+
 	return append([][]Cell(nil), l.cells...)
 }
 

exhibit/scene.go

@@ -6,7 +6,7 @@ type Scene struct {
 }
 
 func (s *Scene) Render() {
-	s.Window.SetSize(s.Terminal.Size())
+//         s.Window.SetSize(s.Terminal.Size())
 
 	c := make([]Cell, 0)
 

exhibit/window_widget.go

@@ -41,11 +41,21 @@ func (w *WindowWidget) SetSize(s Size) {
 }
 
 func (w *WindowWidget) Render() [][]Cell {
+	if w.size.X == 0 || w.size.Y == 0 {
+		return w.renderContent()
+	} else {
+		return w.renderSize()
+	}
+}
+
+func (w *WindowWidget) renderContent() [][]Cell {
 	c := make([][]Cell, 0)
 
 	var y int
+
 	for _, w := range w.widgets {
 		for _, row := range w.Render() {
+
 			t := make([]Cell, len(row))
 			c = append(c, t)
 
@@ -60,3 +70,15 @@ func (w *WindowWidget) Render() [][]Cell {
 
 	return c
 }
+
+func (w *WindowWidget) renderSize() [][]Cell {
+	c := make([][]Cell, w.size.Y)
+
+	for y := 0; y < w.size.Y; y++ {
+		for x := 0; x < w.size.X; x++ {
+			c[y][x] = Cell{Pos: Position{X: x, Y: y}}
+		}
+	}
+
+	return c
+}

spectator.go

@@ -169,19 +169,26 @@ func main() {
 		aIt := asks.Iterator()
 
 		var low, high decimal.Decimal
-		for i := num - 1; i >= 0; i-- {
+		asks := make([]ListEntry, num)
+		for i := 0; i < num; i++ {
 			aIt.Next()
 
 			entries := aIt.Value().(Entries)
 			price, size := flatten(entries)
 
-			topAsks.AddEntry(ListEntry{Value: size.StringFixed(8),
+			asks[i] = ListEntry{Value: size.StringFixed(8),
-				Attrs: exhibit.Attributes{ForegroundColor: exhibit.FGBlue}})
+				Attrs: exhibit.Attributes{ForegroundColor:
+				exhibit.FGBlue}}
 
-			if i == num-1 {
+			if i == 0 {
 				low = price
 			}
 		}
+
+		for i := num - 1; i >= 0; i-- {
+			topAsks.AddEntry(asks[i])
+		}
+
 		topAsks.Commit()
 
 		bIt := bids.Iterator()