SurfaceBoxGraphicsRenderer.cs :  » GUI » Paint.net » PaintDotNet » C# / CSharp Open Source

/////////////////////////////////////////////////////////////////////////////////
// Paint.NET                                                                   //
// Copyright (C) dotPDN LLC, Rick Brewster, Tom Jackson, and contributors.     //
// Portions Copyright (C) Microsoft Corporation. All Rights Reserved.          //
// See src/Resources/Files/License.txt for full licensing and attribution      //
// details.                                                                    //
// .                                                                           //
/////////////////////////////////////////////////////////////////////////////////

using System;
using System.Drawing;

namespace PaintDotNet{
    /// <summary>
    /// This class handles rendering something to a SurfaceBox via a Graphics context.
    /// </summary>
    public abstract class SurfaceBoxGraphicsRenderer
        : SurfaceBoxRenderer
    {
        public SurfaceBoxGraphicsRenderer(SurfaceBoxRendererList ownerList)
            : base(ownerList)
        {
        }
        
        public abstract void RenderToGraphics(Graphics g, Point offset);

        public virtual bool ShouldRender()
        {
            return true;
        }

        public override sealed void Render(Surface dst, Point offset)
        {
            if (ShouldRender())
            {
                using (RenderArgs ra = new RenderArgs(dst))
                {
                    RenderToGraphics(ra.Graphics, offset);
                }
            }
        }
    }
}