netDxf/Objects/ImageDef.cs

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#region netDxf, Copyright(C) 2014 Daniel Carvajal, Licensed under LGPL.

//                        netDxf library
// Copyright (C) 2014 Daniel Carvajal (haplokuon@gmail.com)
// 
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
// 
// 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 System.Collections.Generic;
using System.Drawing;
using System.IO;
using netDxf.Collections;
using netDxf.Tables;

namespace netDxf.Objects
{
    /// <summary>
    /// Represents an image definition.
    /// </summary>
    public class ImageDef :
        TableObject
    {
        #region private fields

        private readonly string fileName;
        private readonly int width;
        private readonly int height;
        private ImageResolutionUnits resolutionUnits;
        // internally we will store the resolution in ppi
        private double horizontalResolution;
        private double verticalResolution;

        // this will store the references to the images that makes use of this image definition (key: image handle, value: reactor)
        private readonly Dictionary<string, ImageDefReactor> reactors;

        #endregion

        #region contructors

        /// <summary>
        /// Initializes a new instance of the <c>ImageDef</c> class.
        /// </summary>
        /// <param name="fileName">Image file name with full or relative path.</param>
        /// <param name="width">Image width in pixels.</param>
        /// <param name="horizontalResolution">Image horizontal resolution in pixels.</param>