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//
// ExtensionsMethods.cs
//
// Author:
// Jean-Philippe Bruyère <jp.bruyere@hotmail.com>
//
// Copyright (c) 2015 jp
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
using System;
using System.Linq.Expressions;
namespace Crow
{
public static class ExtensionsMethods
{
#region Cairo extensions
public static void Rectangle(this Cairo.Context ctx, Rectangle r, bool stroke = false)
{
if (stroke) {
ctx.Rectangle (r.X + 0.5, r.Y + 0.5, r.Width - 1.0, r.Height - 1.0);
ctx.Stroke ();
}else
ctx.Rectangle (r.X, r.Y, r.Width, r.Height);
}
public static void SetSourceColor(this Cairo.Context ctx, Color c)
{
ctx.SetSourceRGBA(c.R,c.G,c.B,c.A);
}
public static void AddColorStop(this Cairo.Gradient grad, double offset, Color c)
{
grad.AddColorStop (offset, new Cairo.Color (c.R, c.G, c.B, c.A));
}
#endregion
public static void Raise(this EventHandler handler, object sender, EventArgs e)
{
if(handler != null)
{
handler(sender, e);
}
}
public static void Raise<T>(this EventHandler<T> handler, object sender, T e)
{
if(handler != null)
{
handler(sender, e);
}
}
/// <summary>
/// Type Extension method for Casting
/// </summary>
public static object Cast(this Type Type, object data)
{
var DataParam = Expression.Parameter(typeof(object), "data");
var Body = Expression.Block(Expression.Convert(Expression.Convert(DataParam, data.GetType()), Type));
var Run = Expression.Lambda(Body, DataParam).Compile();
var ret = Run.DynamicInvoke(data);
return ret;
}
public static bool IsWhiteSpaceOrNewLine (this char c)
{
return c == '\t' || c == '\r' || c == '\n' || char.IsWhiteSpace (c);
}
}
}
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