#region MigraDoc - Creating Documents on the Fly
//
// Authors:
//   Klaus Potzesny (mailto:Klaus.Potzesny@pdfsharp.com)
//
// Copyright (c) 2001-2009 empira Software GmbH, Cologne (Germany)
//
// http://www.pdfsharp.com
// http://www.migradoc.com
// http://sourceforge.net/projects/pdfsharp
//
// 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.
#endregion

using System;
using PdfSharp.Drawing;
using MigraDoc.DocumentObjectModel;
using MigraDoc.DocumentObjectModel.IO;

namespace MigraDoc.Rendering
{
  /// <summary>
  /// Renders a Shading to an XGraphics object.
  /// </summary>
  internal class ShadingRenderer
  {
    public ShadingRenderer(XGraphics gfx, Shading shading)
    {
      this.gfx = gfx;
      this.shading = shading;
      RealizeBrush();
    }

    internal void Render(XUnit x, XUnit y, XUnit width, XUnit height)
    {
      if (this.shading == null || this.brush == null)
        return;

      this.gfx.DrawRectangle(this.brush, x.Point, y.Point, width.Point, height.Point);
    }

    private bool IsVisible()
    {
      if (!this.shading.IsNull("Visible"))
        return this.shading.Visible;
      else
        return !this.shading.IsNull("Color");
    }

    private void RealizeBrush()
    {
      if (this.shading == null)
        return;
      if (IsVisible())
      {
#if noCMYK
        this.brush = new XSolidBrush(XColor.FromArgb((int)this.shading.Color.Argb));
#else
        this.brush = new XSolidBrush(ColorHelper.ToXColor(this.shading.Color, this.shading.Document.UseCmykColor));
#endif
      }
    }
    private Shading shading;
    private XBrush brush;
    private XGraphics gfx;
  }
}
