93 lines
3.9 KiB
C#
93 lines
3.9 KiB
C#
/*
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* Copyright 2022 Peter Han
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* Permission is hereby granted, free of charge, to any person obtaining a copy of this software
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* and associated documentation files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all copies or
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* substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
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* BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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using UnityEngine;
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namespace PeterHan.PLib.UI {
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/// <summary>
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/// Extension methods to deal with TextAnchor alignments.
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/// </summary>
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public static class TextAnchorUtils {
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/// <summary>
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/// Returns true if this text alignment is at the left.
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/// </summary>
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/// <param name="anchor">The anchoring to check.</param>
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/// <returns>true if it denotes a Left alignment, or false otherwise.</returns>
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public static bool IsLeft(this TextAnchor anchor) {
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return anchor == TextAnchor.UpperLeft || anchor == TextAnchor.MiddleLeft ||
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anchor == TextAnchor.LowerLeft;
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}
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/// <summary>
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/// Returns true if this text alignment is at the bottom.
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/// </summary>
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/// <param name="anchor">The anchoring to check.</param>
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/// <returns>true if it denotes a Lower alignment, or false otherwise.</returns>
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public static bool IsLower(this TextAnchor anchor) {
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return anchor == TextAnchor.LowerCenter || anchor == TextAnchor.LowerLeft ||
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anchor == TextAnchor.LowerRight;
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}
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/// <summary>
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/// Returns true if this text alignment is at the right.
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/// </summary>
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/// <param name="anchor">The anchoring to check.</param>
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/// <returns>true if it denotes a Right alignment, or false otherwise.</returns>
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public static bool IsRight(this TextAnchor anchor) {
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return anchor == TextAnchor.UpperRight || anchor == TextAnchor.MiddleRight ||
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anchor == TextAnchor.LowerRight;
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}
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/// <summary>
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/// Returns true if this text alignment is at the top.
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/// </summary>
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/// <param name="anchor">The anchoring to check.</param>
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/// <returns>true if it denotes an Upper alignment, or false otherwise.</returns>
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public static bool IsUpper(this TextAnchor anchor) {
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return anchor == TextAnchor.UpperCenter || anchor == TextAnchor.UpperLeft ||
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anchor == TextAnchor.UpperRight;
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}
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/// <summary>
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/// Mirrors a text alignment horizontally. UpperLeft becomes UpperRight, MiddleLeft
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/// becomes MiddleRight, and so forth.
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/// </summary>
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/// <param name="anchor">The anchoring to mirror.</param>
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/// <returns>The horizontally reflected version of that mirror.</returns>
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public static TextAnchor MirrorHorizontal(this TextAnchor anchor) {
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int newAnchor = (int)anchor;
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// UL UC UR ML MC MR LL LC LR
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// Danger will robinson!
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newAnchor = 3 * (newAnchor / 3) + 2 - newAnchor % 3;
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return (TextAnchor)newAnchor;
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}
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/// <summary>
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/// Mirrors a text alignment vertically. UpperLeft becomes LowerLeft, LowerCenter
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/// becomes UpperCenter, and so forth.
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/// </summary>
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/// <param name="anchor">The anchoring to mirror.</param>
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/// <returns>The vertically reflected version of that mirror.</returns>
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public static TextAnchor MirrorVertical(this TextAnchor anchor) {
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int newAnchor = (int)anchor;
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newAnchor = 6 - 3 * (newAnchor / 3) + newAnchor % 3;
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return (TextAnchor)newAnchor;
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}
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}
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}
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