mirror of
https://github.com/greenshot/greenshot.git
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103 lines
3.5 KiB
C#
103 lines
3.5 KiB
C#
/*
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* Greenshot - a free and open source screenshot tool
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* Copyright (C) 2007-2016 Thomas Braun, Jens Klingen, Robin Krom
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*
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* For more information see: http://getgreenshot.org/
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* The Greenshot project is hosted on GitHub https://github.com/greenshot/greenshot
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 1 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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using System;
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namespace GreenshotPlugin.Core {
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public static class EnumerationExtensions {
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public static bool Has<T>(this Enum type, T value) {
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Type underlyingType = Enum.GetUnderlyingType(value.GetType());
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try {
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if (underlyingType == typeof(int)) {
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return (((int)(object)type & (int)(object)value) == (int)(object)value);
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} else if (underlyingType == typeof(uint)) {
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return (((uint)(object)type & (uint)(object)value) == (uint)(object)value);
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}
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}
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catch
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{
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// ignored
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}
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return false;
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}
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public static bool Is<T>(this Enum type, T value) {
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Type underlyingType = Enum.GetUnderlyingType(value.GetType());
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try
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{
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if (underlyingType == typeof(int)) {
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return (int)(object)type == (int)(object)value;
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}
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if (underlyingType == typeof(uint)) {
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return (uint)(object)type == (uint)(object)value;
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}
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}
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catch
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{
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// ignored
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}
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return false;
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}
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/// <summary>
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/// Add a flag to an enum
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/// </summary>
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/// <param name="type"></param>
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/// <param name="value"></param>
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/// <returns></returns>
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public static T Add<T>(this Enum type, T value) {
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Type underlyingType = Enum.GetUnderlyingType(value.GetType());
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try
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{
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if (underlyingType == typeof(int)) {
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return (T)(object)(((int)(object)type | (int)(object)value));
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}
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if (underlyingType == typeof(uint)) {
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return (T)(object)(((uint)(object)type | (uint)(object)value));
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}
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} catch(Exception ex) {
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throw new ArgumentException($"Could not append value '{value}' to enumerated type '{typeof(T).Name}'.", ex);
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}
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throw new ArgumentException($"Could not append value '{value}' to enumerated type '{typeof(T).Name}'.");
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}
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/// <summary>
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/// Remove a flag from an enum type
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/// </summary>
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/// <param name="type"></param>
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/// <param name="value"></param>
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/// <returns></returns>
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public static T Remove<T>(this Enum type, T value) {
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Type underlyingType = Enum.GetUnderlyingType(value.GetType());
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try
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{
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if (underlyingType == typeof(int)) {
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return (T)(object)(((int)(object)type & ~(int)(object)value));
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}
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if (underlyingType == typeof(uint)) {
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return (T)(object)(((uint)(object)type & ~(uint)(object)value));
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}
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} catch(Exception ex) {
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throw new ArgumentException($"Could not remove value '{value}' from enumerated type '{typeof(T).Name}'.", ex);
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}
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throw new ArgumentException($"Could not remove value '{value}' from enumerated type '{typeof(T).Name}'.");
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}
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}
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}
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