Introduce helper methods for alignment for all widgets

core/src/alignment.rs

@@ -1,5 +1,30 @@
 //! Align and position widgets.
 
+/// Returns a value representing center alignment.
+pub const fn center() -> Alignment {
+    Alignment::Center
+}
+
+/// Returns a value representing left alignment.
+pub const fn left() -> Horizontal {
+    Horizontal::Left
+}
+
+/// Returns a value representing right alignment.
+pub const fn right() -> Horizontal {
+    Horizontal::Right
+}
+
+/// Returns a value representing top alignment.
+pub const fn top() -> Vertical {
+    Vertical::Top
+}
+
+/// Returns a value representing bottom alignment.
+pub const fn bottom() -> Vertical {
+    Vertical::Bottom
+}
+
 /// Alignment on the axis of a container.
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
 pub enum Alignment {
@@ -46,6 +71,16 @@ pub enum Horizontal {
     Right,
 }
 
+impl From<Alignment> for Horizontal {
+    fn from(alignment: Alignment) -> Self {
+        match alignment {
+            Alignment::Start => Self::Left,
+            Alignment::Center => Self::Center,
+            Alignment::End => Self::Right,
+        }
+    }
+}
+
 /// The vertical [`Alignment`] of some resource.
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
 pub enum Vertical {
@@ -58,3 +93,13 @@ pub enum Vertical {
     /// Align bottom
     Bottom,
 }
+
+impl From<Alignment> for Vertical {
+    fn from(alignment: Alignment) -> Self {
+        match alignment {
+            Alignment::Start => Self::Top,
+            Alignment::Center => Self::Center,
+            Alignment::End => Self::Bottom,
+        }
+    }
+}