// 
// GradientBackendHandler.cs
//  
// Author:
//       Eric Maupin <ermau@xamarin.com>
// 
// Copyright (c) 2012 Xamarin, Inc.
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

using System;
using System.Collections.Generic;
using System.Linq;

using Xwt.Backends;
using Color = Xwt.Drawing.Color;
using System.Windows.Media;
using SW = System.Windows;

namespace Xwt.WPFBackend
{
	public class WpfGradientBackendHandler
		: GradientBackendHandler
	{
		public override object CreateLinear (double x0, double y0, double x1, double y1)
		{
			return new LinearGradientBrush () {
				StartPoint = new SW.Point (x0, y0),
				EndPoint = new SW.Point (x1, y1),
				MappingMode = BrushMappingMode.Absolute
			};
		}

		public override void Dispose (object backend)
		{
		}

		public override object CreateRadial (double cx0, double cy0, double radius0, double cx1, double cy1, double radius1)
		{
			return new RadialGradientBrush () {
				GradientOrigin = new SW.Point (cx0, cy0),
				Center = new SW.Point (cx1, cy1),
				RadiusX = radius1,
				RadiusY = radius1,
				MappingMode = BrushMappingMode.Absolute
			};
		}

		public override void AddColorStop (object backend, double position, Color color)
		{
			((GradientBrush)backend).GradientStops.Add (new GradientStop (color.ToWpfColor (), position));
		}
	}
}
