gg: fixes and Android support (#6161)

vlib/gx/text.v

@@ -1,19 +1,39 @@
 module gx
 
-pub const (
-	align_left  = 1
-	align_right = 4
+import fontstash
+
+const (
+	used_import = fontstash.used_import
 )
 
+// TODO: remove these and uae the enum everywhere
+const (
+	align_left = HorizontalAlign.left
+	align_right = HorizontalAlign.right
+)
+
+pub enum HorizontalAlign {
+	left = C.FONS_ALIGN_LEFT
+	center = C.FONS_ALIGN_CENTER
+	right = C.FONS_ALIGN_RIGHT
+}
+
+pub enum VerticalAlign {
+	top = C.FONS_ALIGN_TOP
+	middle = C.FONS_ALIGN_MIDDLE
+	bottom = C.FONS_ALIGN_BOTTOM
+	baseline = C.FONS_ALIGN_BASELINE
+}
+
 pub struct TextCfg {
 pub:
-	color     Color
-	size      int
-	align     int
-	max_width int
-	family    string
-	bold      bool
-	mono      bool
-	italic bool
-
+	color          Color = black
+	size           int = 16
+	align          HorizontalAlign = .left
+	vertical_align VerticalAlign = .top
+	max_width      int
+	family         string
+	bold           bool
+	mono           bool
+	italic         bool
 }