102 строки
4.4 KiB
C#
102 строки
4.4 KiB
C#
// RichTextKit
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// Copyright © 2019-2020 Topten Software. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may
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// not use this product except in compliance with the License. You may obtain
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// a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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// License for the specific language governing permissions and limitations
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// under the License.
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namespace Topten.RichTextKit
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{
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/// <summary>
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/// Extension methods for working with IStyle
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/// </summary>
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public static class IStyleExtensions
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{
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/// <summary>
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/// Generates a string key that uniquely identifies the formatting characteristics
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/// of this style.
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/// </summary>
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/// <remarks>
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/// Two styles with the same Key will rendering identically even if different instances.
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/// </remarks>
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/// <param name="This">The style instance to generate the key for</param>
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/// <returns>A key string</returns>
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public static string Key(this IStyle This)
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{
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return $"{This.FontFamily}.{This.FontSize}.{This.FontWeight}.{This.FontWidth}.{This.FontItalic}.{This.Underline}.{This.StrikeThrough}.{This.LineHeight}.{This.TextColor}.{This.BackgroundColor}.{This.LetterSpacing}.{This.FontVariant}.{This.TextDirection}.{This.ReplacementCharacter}.{This.HaloWidth}.{This.HaloColor}.{This.HaloBlur}";
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}
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/// <summary>
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/// Compares this style to another and returns true if both will have the same
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/// layout, but not necessarily the same appearance (eg: color change, underline etc...)
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/// </summary>
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/// <param name="This">The style instance</param>
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/// <param name="other">The other style instance to compare to</param>
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/// <returns>True if both styles will give the same layout</returns>
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public static bool HasSameLayout(this IStyle This, IStyle other)
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{
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if (This.FontFamily != other.FontFamily)
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return false;
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if (This.FontSize != other.FontSize)
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return false;
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if (This.FontWeight != other.FontWeight)
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return false;
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if (This.FontWidth != other.FontWidth)
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return false;
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if (This.FontItalic != other.FontItalic)
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return false;
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if (This.LineHeight != other.LineHeight)
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return false;
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if (This.TextDirection != other.TextDirection)
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return false;
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if (This.LetterSpacing != other.LetterSpacing)
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return false;
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if (This.FontVariant != other.FontVariant)
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return false;
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if (This.ReplacementCharacter != other.ReplacementCharacter)
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return false;
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return true;
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}
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/// <summary>
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/// Compares this style to another and returns true if both will have the same
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/// layout, but not necessarily the same appearance (eg: color change, underline etc...)
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/// </summary>
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/// <param name="This">The style instance</param>
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/// <param name="other">The other style instance to compare to</param>
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/// <returns>True if both styles will give the same layout</returns>
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public static bool IsSame(this IStyle This, IStyle other)
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{
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if (This == null && other == null)
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return true;
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if (This == null || other == null)
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return false;
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if (!This.HasSameLayout(other))
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return false;
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if (This.TextColor != other.TextColor)
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return false;
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if (This.BackgroundColor != other.BackgroundColor)
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return false;
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if (This.Underline != other.Underline)
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return false;
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if (This.StrikeThrough != other.StrikeThrough)
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return false;
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if (This.HaloBlur != other.HaloBlur)
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return false;
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if (This.HaloColor != other.HaloColor)
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return false;
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if (This.HaloWidth != other.HaloWidth)
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return false;
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return true;
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}
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}
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}
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