Do not add spacing for children with size 0

Author: whoozle

core/Column.qml

@@ -20,6 +20,7 @@ Layout {
 		var p = 0
 		var w = 0
 		this.count = children.length
+
 		for(var i = 0; i < children.length; ++i) {
 			var c = children[i]
 			if (!('height' in c))
@@ -32,7 +33,7 @@ Layout {
 			if (r > w)
 				w = r
 			c.viewY = p + tm
-			if (c.visible)
+			if (c.visible && c.height > 0)
 				p += c.height + tm + bm + this.spacing
 		}
 		if (p > 0)

core/ListView.qml

@@ -101,9 +101,11 @@ BaseView {
 					 s = 0
 
 				if (horizontal) {
-					x += s + spacing
+					if (s > 0)
+						x += s + spacing
 				} else {
-					y += s + spacing
+					if (s > 0)
+						y += s + spacing
 				}
 			}
 			return [x, y, w, h]
@@ -273,7 +275,8 @@ BaseView {
 				}
 			}
 
-			p += s + this.spacing
+			if (s > 0)
+				p += s + this.spacing
 		}
 		if (p > startPos)
 			p -= this.spacing;

core/Row.qml

@@ -20,6 +20,7 @@ Layout {
 		var p = 0
 		var h = 0
 		this.count = children.length
+
 		for(var i = 0; i < children.length; ++i) {
 			var c = children[i]
 			if (!('width' in c))
@@ -32,7 +33,7 @@ Layout {
 			if (b > h)
 				h = b
 			c.viewX = p + rm
-			if (c.visible)
+			if (c.visible && c.width > 0)
 				p += c.width + this.spacing + rm + lm
 		}
 		if (p > 0)