Add vertical, horizontal and horizontalDirected funcs to absolute positioning

Author: Kuluum

Sources/FlexLayout.swift

@@ -648,6 +648,73 @@ public final class Flex {
         return self
     }
 
+    /**
+      Set the left and right edges distance from the container edges in pixels.
+      This method is valid only when the item position is absolute (`view.flex.position(.absolute)`)
+      */
+    @discardableResult
+    public func horizontal(_ value: CGFloat) -> Flex {
+        yoga.left = YGValue(value)
+        yoga.right = YGValue(value)
+        return self
+     }
+
+     /**
+      Set the left and right edges distance from the container edges in percentage of its container width.
+      This method is valid only when the item position is absolute (`view.flex.position(.absolute)`)
+      */
+    @discardableResult
+    public func horizontal(_ percent: FPercent) -> Flex {
+        yoga.left = YGValue(value: Float(percent.value), unit: .percent)
+        yoga.right = YGValue(value: Float(percent.value), unit: .percent)
+        return self
+    }
+    
+    /**
+     Set the start and end  edges (LTR=right, RTL=left) distance from the container edges in pixels.
+     This method is valid only when the item position is absolute (`view.flex.position(.absolute)`)
+     */
+    @discardableResult
+    public func horizontalDirected(_ value: CGFloat) -> Flex {
+        yoga.start = YGValue(value)
+        yoga.end = YGValue(value)
+        return self
+    }
+    
+    /**
+     Set the start and end edges (LTR=right, RTL=left) distance from the container edges in
+     percentage of its container width.
+     This method is valid only when the item position is absolute (`view.flex.position(.absolute)`)
+     */
+    @discardableResult
+    public func horizontalDirected(_ percent: FPercent) -> Flex {
+        yoga.start = YGValue(value: Float(percent.value), unit: .percent)
+        yoga.end = YGValue(value: Float(percent.value), unit: .percent)
+        return self
+    }
+    
+    /**
+     Set the top and bottom edges distance from the container edges in pixels.
+     This method is valid only when the item position is absolute (`view.flex.position(.absolute)`)
+     */
+    @discardableResult
+    public func vertical(_ value: CGFloat) -> Flex {
+        yoga.top = YGValue(value)
+        yoga.bottom = YGValue(value)
+        return self
+    }
+    
+    /**
+     Set the top and bottom edges distance from the container edges in percentage of its container height.
+     This method is valid only when the item position is absolute (`view.flex.position(.absolute)`)
+     */
+    @discardableResult
+    public func vertical(_ percent: FPercent) -> Flex {
+        yoga.top = YGValue(value: Float(percent.value), unit: .percent)
+        yoga.bottom = YGValue(value: Float(percent.value), unit: .percent)
+        return self
+    }
+    
     //
     // MARK: Margins
     //