using System;
using System.Drawing;
using System.Windows.Forms;

namespace Dongke.WinForm.Controls.InvoiceLayout
{
    /// <summary>
    /// 
    /// </summary>
    [Serializable]
    public class ImageItem : LayoutItem
    {
        #region 成员变量
        private string _fileName = string.Empty;            // 图片文件的路径（全名）
        private Image _image;                                    // 图片
        #endregion 成员变量

        #region 属性
        /// <summary>
        /// 获取或设置图片文件的路径（全名）
        /// </summary>
        public string FileName
        {
            get
            {
                return _fileName;
            }
            set
            {
                if (string.IsNullOrEmpty(value))
                {
                    value = string.Empty;
                }
                if (!value.Equals(_fileName))
                {
                    _fileName = value;
                    if (Owner != null)
                    {
                        Owner.SetItemChangedArgs(this, ItemChangeType.Modified);
                    }
                }
            }
        }

        /// <summary>
        /// 获取或设置图片
        /// </summary>
        public Image Image
        {
            get
            {
                return _image;
            }
            set
            {
                _image = value;
                if (SimpleShape != null)
                {
                    SimpleShape.BackgroundImageLayout = ImageLayout.Stretch;
                    SimpleShape.BackgroundImage = _image;
                }
                if (Owner != null)
                {
                    Owner.SetItemChangedArgs(this, ItemChangeType.Modified);
                }
            }
        }
        #endregion 属性

        #region 构造函数
        /// <summary>
        /// 构造函数
        /// </summary>
        internal ImageItem()
            : this(null)
        {
        }

        /// <summary>
        /// 构造函数
        /// </summary>
        /// <param name="box">Layoutbox</param>
        internal ImageItem(LayoutBox box)
            : base(box, ItemType.Image)
        {
            _width = LayoutConsts.SHAPE_ITEM_SIZE_DEFAULT_WIDTH;
            _height = LayoutConsts.SHAPE_ITEM_SIZE_DEFAULT_HEIGHT;
            if (box != null)
            {
                if (_simpleShape != null)
                {
                    _simpleShape.BackgroundImageLayout = ImageLayout.Stretch;
                    _simpleShape.BackgroundImage = _image;
                }
            }
        }
        #endregion 构造函数

        #region 函数
        /// <summary>
        /// 显示Item属性设置画面
        /// </summary>
        /// <returns>
        /// DialogResult.OK:选中的Item有效，设置成功<br/>
        /// DialogResult.Cancel:选中的Item有效，取消设置<br/>
        /// DialogResult.None:LayoutBox不是编辑模式，或选中的Item不是一个
        /// </returns>
        protected override DialogResult ShowItemPropertyDialogInner()
        {
            using (ImageItemSetting itemPropertySetting = new ImageItemSetting())
            {
                itemPropertySetting.ImageLocationX = Left;
                itemPropertySetting.ImageLocationY = Top;
                itemPropertySetting.ImageWidth = Width;
                itemPropertySetting.ImageHeight = Height;
                itemPropertySetting.SideRatioFixed = SideRatioFixed;
                itemPropertySetting.FileName = FileName;
                itemPropertySetting.Image = Image;
                DialogResult result = itemPropertySetting.ShowDialog();
                if (result == DialogResult.OK)
                {
                    Left = itemPropertySetting.ImageLocationX;
                    Top = itemPropertySetting.ImageLocationY;
                    Width = itemPropertySetting.ImageWidth;
                    Height = itemPropertySetting.ImageHeight;
                    SideRatioFixed = itemPropertySetting.SideRatioFixed;
                    ResetItemFrame();
                    SetDrawProperty();
                    Owner.Dirty = true;
                }
                return result;
            }
        }

        /// <summary>
        /// Item初始化
        /// </summary>
        /// <param name="box">LayoutBox</param>
        /// <param name="isNewID">是否生成新ID</param>
        /// <returns>是否成功</returns>
        internal override bool Init(LayoutBox box, bool isNewID)
        {
            bool isInit = base.Init(box, isNewID);
            if (isInit)
            {
                if (_simpleShape != null)
                {
                    _simpleShape.BackgroundImageLayout = ImageLayout.Stretch;
                    _simpleShape.BackgroundImage = _image;
                }
            }
            return isInit;
        }
        #endregion 函数
    }
}