using System;
using System.Data;
using System.Drawing;
using System.Globalization;
using System.IO;
using System.Windows.Forms;

namespace Dongke.WinForm.Controls.InvoiceLayout
{
    /// ====================================================================
    /// 类名：LayoutUtility
    /// <summary>
    /// Layout共通方法
    /// </summary>
    /// ====================================================================
    internal static class LayoutCommon
    {
        #region 成员变量
        // DPI用
        private static readonly Control _control;
        // 图形
        private static readonly Graphics _graphics;

        private static float _dpiX = -1;
        // 默认字体
        private static readonly Font _defaultItemFont;
        // 选择画刷
        private static readonly SolidBrush _selectedBrush;
        // 打印范围用绿线标识
        private static readonly Pen _greedDotPen;
        // StringFormat
        private static readonly StringFormat _stringFormatHorizontal;
        // 文本Item的默认宽
        private static readonly float _defaultTextItemSizeWidth = 0f;
        // 文本Item的默认高
        private static readonly float _defaultTextItemSizeHeight = 0f;
        // JPカルチャ
        private static readonly CultureInfo _cultureInfoJP;
        // 格式
        public static DataTable SYSFormat = new DataTable("SYSFormat");
        // 默认值
        public static DataTable SYSDefaultValue = new DataTable("SYSDefaultValue");
        #endregion 成员变量

        #region 构造函数
        /// <summary>
        /// 构造函数
        /// </summary>
        static LayoutCommon()
        {
            _control = new Control();
            _graphics = _control.CreateGraphics();
            _graphics.PageUnit = GraphicsUnit.Millimeter;
            _dpiX = _graphics.DpiX;

            _selectedBrush = new SolidBrush(Color.LightGray);

            _greedDotPen = new Pen(Color.Green, 1);
            _greedDotPen.DashStyle = System.Drawing.Drawing2D.DashStyle.Dot;

            _cultureInfoJP = new CultureInfo(LayoutConsts.CULTUREINFO_JP);
            _cultureInfoJP.DateTimeFormat.Calendar = new JapaneseCalendar();

            _stringFormatHorizontal = new StringFormat(StringFormat.GenericTypographic);
            _stringFormatHorizontal.Alignment = StringAlignment.Center;
            _stringFormatHorizontal.LineAlignment = StringAlignment.Center;
            _stringFormatHorizontal.LineAlignment = StringAlignment.Near;
            _stringFormatHorizontal.FormatFlags = StringFormatFlags.FitBlackBox
                                                | StringFormatFlags.NoWrap
                                                | StringFormatFlags.NoClip;

            _defaultItemFont = new Font(LayoutConsts.ITEM_FONT_FAMILYNAME_DEFAULT,
                                        LayoutConsts.ITEM_FONT_EMSIZE_DEFAULT);
            float fontHeight = Convert.ToSingle(Math.Ceiling(GetMaxSizeF(_defaultItemFont).Height * 10) / 10);
            _defaultTextItemSizeHeight = LayoutConsts.TEXT_MARGIN + LayoutConsts.TEXT_MARGIN + fontHeight;
            _defaultTextItemSizeWidth = 40f;

            Stream sysFormat = System.Reflection.Assembly.GetExecutingAssembly().
                    GetManifestResourceStream(@"Dongke.WinForm.Controls.InvoiceLayout.Resources.SYSFormat.xml");
            SYSFormat.ReadXml(sysFormat);

            Stream sysDefaultValue = System.Reflection.Assembly.GetExecutingAssembly().
                GetManifestResourceStream(@"Dongke.WinForm.Controls.InvoiceLayout.Resources.SYSDefaultValue.xml");
            SYSDefaultValue.ReadXml(sysDefaultValue);
        }
        #endregion 构造函数

        #region 属性
        /// <summary>
        /// 获取系统DPI
        /// </summary>
        public static Graphics ControlGraphics
        {
            get
            {
                return _graphics;
            }
        }

        /// <summary>
        /// 获取系统DPI
        /// </summary>
        public static float DPI
        {
            get
            {
                if (_dpiX < 0)
                {
                    _dpiX = _graphics.DpiX;
                }
                return _dpiX;
            }
        }

        /// <summary>
        /// 默认字体
        /// </summary>
        public static Font DefaultItemFont
        {
            get
            {
                return (Font)_defaultItemFont.Clone();
            }
        }

        /// <summary>
        /// 选择画刷
        /// </summary>
        public static SolidBrush SelectedBrush
        {
            get
            {
                return _selectedBrush;
            }
        }

        /// <summary>
        /// 打印范围用绿线标识
        /// </summary>
        public static Pen GreedDotPen
        {
            get
            {
                return _greedDotPen;
            }
        }

        /// <summary>
        /// StringFormat
        /// </summary>
        public static StringFormat StringFormatHorizontal
        {
            get
            {
                return _stringFormatHorizontal;
            }
        }


        /// <summary>
        /// 文本Item默认宽
        /// </summary>
        public static float DefaultTextItemSizeWidth
        {
            get
            {
                return _defaultTextItemSizeWidth;
            }
        }

        /// <summary>
        /// 文本Item默认高
        /// </summary>
        public static float DefaultTextItemSizeHeight
        {
            get
            {
                return _defaultTextItemSizeHeight;
            }
        }

        public static CultureInfo CultureInfoJP
        {
            get
            {
                return _cultureInfoJP;
            }
        }
        #endregion 属性

        #region 函数
        /// <summary>
        /// 1/100 英寸转换为毫米
        /// </summary>
        /// <remarks>
        /// 表示倍率 100%
        /// </remarks>
        /// <param name="inch100">1/100 英寸</param>
        /// <returns>毫米</returns>
        public static float Inch100ToMillimeter(int inch100)
        {
            float mm = inch100 * LayoutConsts.MILLIMETER_PER_INCH / 100;
            return mm;
        }

        /// <summary>
        /// 1/100 英寸转换为毫米
        /// </summary>
        /// <remarks>
        /// 表示倍率 100%
        /// </remarks>
        /// <param name="inch100">1/100 英寸</param>
        /// <returns>毫米</returns>
        public static float Inch100ToMillimeter(float inch100)
        {
            float mm = inch100 * LayoutConsts.MILLIMETER_PER_INCH / 100;
            return mm;
        }

        /// <summary>
        /// 磅转换为毫米
        /// </summary>
        /// <remarks>
        /// 表示倍率 100%
        /// </remarks>
        /// <param name="point">磅</param>
        /// <returns>毫米</returns>
        public static float PointToMillimeter(float point)
        {
            float mm = point / LayoutConsts.POINT_PER_INCH * LayoutConsts.MILLIMETER_PER_INCH;
            return mm;
        }

        /// <summary>
        /// 磅转换为像素
        /// </summary>
        /// <remarks>
        /// 表示倍率 100%
        /// </remarks>
        /// <param name="point">磅</param>
        /// <returns>像素</returns>
        public static int PointToPixel(float point)
        {
            decimal pixel = System.Convert.ToDecimal(point) /
                System.Convert.ToDecimal(LayoutConsts.POINT_PER_INCH) *
                System.Convert.ToDecimal(DPI);
            return System.Convert.ToInt32(Math.Round(pixel, 0));
        }

        /// <summary>
        /// 毫米转换为1/100 英寸
        /// </summary>
        /// <remarks>
        /// 表示倍率 100%
        /// </remarks>
        /// <param name="mm">毫米</param>
        /// <returns>1/100 英寸</returns>
        public static int MillimeterToInch100(float mm)
        {
            float inch100 = mm / LayoutConsts.MILLIMETER_PER_INCH * 100;
            return System.Convert.ToInt32(Math.Round(inch100, 0));
        }

        /// <summary>
        /// 毫米转换为1/100 英寸
        /// </summary>
        /// <remarks>
        /// 表示倍率 100%
        /// </remarks>
        /// <param name="mm">毫米</param>
        /// <returns>1/100 英寸</returns>
        public static float MillimeterToInch100Single(float mm)
        {
            float inch100 = mm / LayoutConsts.MILLIMETER_PER_INCH * 100;
            return inch100;
        }

        /// <summary>
        /// 毫米转换为像素
        /// </summary>
        /// <remarks>
        /// 表示倍率 100%
        /// </remarks>
        /// <param name="mm">毫米</param>
        /// <returns>像素</returns>
        public static int MillimeterToPixel(float mm)
        {
            decimal pixel = System.Convert.ToDecimal(mm) /
                System.Convert.ToDecimal(LayoutConsts.MILLIMETER_PER_INCH) *
                System.Convert.ToDecimal(DPI);
            return System.Convert.ToInt32(Math.Round(pixel, 0));
        }

        /// <summary>
        /// 毫米转换为像素
        /// </summary>
        /// <param name="mm">毫米</param>
        /// <param name="paperZoom">表示倍率%</param>
        /// <returns>像素</returns>
        public static int MillimeterToPixel(float mm, int paperZoom)
        {
            if (0 < paperZoom)
            {
                decimal pixel = System.Convert.ToDecimal(mm) /
                System.Convert.ToDecimal(LayoutConsts.MILLIMETER_PER_INCH) *
                System.Convert.ToDecimal(DPI) *
                System.Convert.ToDecimal(paperZoom) / 100m;
                return System.Convert.ToInt32(Math.Round(pixel, 0));
            }
            else
            {
                return 0;
            }
        }

        /// <summary>
        /// 毫米转换为像素
        /// </summary>
        /// <param name="mm">毫米</param>
        /// <param name="paperZoom">表示倍率%</param>
        /// <returns>像素</returns>
        public static int MillimeterToPixel(float mm, double paperZoom)
        {
            if (0 < paperZoom)
            {
                decimal pixel = System.Convert.ToDecimal(mm) /
                System.Convert.ToDecimal(LayoutConsts.MILLIMETER_PER_INCH) *
                System.Convert.ToDecimal(DPI) *
                System.Convert.ToDecimal(paperZoom);
                return System.Convert.ToInt32(Math.Round(pixel, 0));
            }
            else
            {
                return 0;
            }
        }

        /// <summary>
        /// 毫米转换为像素
        /// </summary>
        /// <param name="mm">毫米</param>
        /// <param name="paperZoom">表示倍率%</param>
        /// <returns>像素</returns>
        public static float MillimeterToPixelSingle(float mm, int paperZoom)
        {
            if (0 < paperZoom)
            {
                decimal pixel = System.Convert.ToDecimal(mm) /
                System.Convert.ToDecimal(LayoutConsts.MILLIMETER_PER_INCH) *
                System.Convert.ToDecimal(DPI) *
                System.Convert.ToDecimal(paperZoom) / 100m;
                return System.Convert.ToSingle(pixel);
            }
            else
            {
                return 0f;
            }
        }

        /// <summary>
        /// 像素转换为毫米
        /// </summary>
        /// <remarks>
        /// 表示倍率 100%
        /// </remarks>
        /// <param name="pixel">像素</param>
        /// <returns>毫米</returns>
        public static float PixelToMillimeter(int pixel)
        {
            decimal mm = System.Convert.ToDecimal(pixel) *
                System.Convert.ToDecimal(LayoutConsts.MILLIMETER_PER_INCH) /
                System.Convert.ToDecimal(DPI);
            return System.Convert.ToSingle(mm);
        }

        /// <summary>
        /// 像素转换为毫米
        /// </summary>
        /// <param name="pixel">像素</param>
        /// <param name="paperZoom">表示倍率%</param>
        /// <returns>毫米</returns>
        public static float PixelToMillimeter(int pixel, int paperZoom)
        {
            if (0 < paperZoom)
            {
                decimal mm = System.Convert.ToDecimal(pixel) *
                    System.Convert.ToDecimal(LayoutConsts.MILLIMETER_PER_INCH) /
                    System.Convert.ToDecimal(DPI) /
                    System.Convert.ToDecimal(paperZoom) * 100m;
                return System.Convert.ToSingle(mm);
            }
            else
            {
                return 0f;
            }
        }

        /// <summary>
        /// 像素转换为毫米
        /// </summary>
        /// <param name="pixel">像素</param>
        /// <param name="paperZoom">表示倍率%</param>
        /// <param name="dpi">DPI</param>
        /// <returns>毫米</returns>
        public static float PixelToMillimeter(int pixel, int paperZoom, float dpi)
        {
            if (0 < paperZoom)
            {
                decimal mm = System.Convert.ToDecimal(pixel) *
                    System.Convert.ToDecimal(LayoutConsts.MILLIMETER_PER_INCH) /
                    System.Convert.ToDecimal(dpi) /
                    System.Convert.ToDecimal(paperZoom) * 100m;
                return System.Convert.ToSingle(mm);
            }
            else
            {
                return 0f;
            }
        }

        /// <summary>
        /// 像素转换为毫米
        /// </summary>
        /// <param name="pixel">像素</param>
        /// <param name="paperZoom">表示倍率%</param>
        /// <returns>毫米</returns>
        public static float PixelToMillimeter(int pixel, double paperZoom)
        {
            if (0 < paperZoom)
            {
                decimal mm = System.Convert.ToDecimal(pixel) *
                    System.Convert.ToDecimal(LayoutConsts.MILLIMETER_PER_INCH) /
                    System.Convert.ToDecimal(DPI) /
                    System.Convert.ToDecimal(paperZoom);
                return System.Convert.ToSingle(mm);
            }
            else
            {
                return 0f;
            }
        }

        /// <summary>
        /// 截断到指定的精度。
        /// </summary>
        /// <param name="value">截断的目标</param>
        /// <param name="digits">精度</param>
        /// <returns>截断后的数值</returns>
        public static float Truncate(float value, int digits)
        {
            double v = Math.Pow(10, digits);
            return Convert.ToSingle(Math.Truncate((double)value * v) / v);
        }

        /// <summary>
        /// 截断到指定的精度。
        /// </summary>
        /// <param name="value">截断的目标</param>
        /// <param name="digits">精度</param>
        /// <returns>截断后的数值</returns>
        public static decimal Truncate(decimal value, int digits)
        {
            decimal v = (decimal)Math.Pow(10, digits);
            return Math.Truncate(value * v) / v;
        }

        /// <summary>
        /// 全角字符尺寸
        /// </summary>
        /// <param name="font">字体</param>
        /// <returns>全角字符尺寸</returns>
        public static SizeF GetMaxSizeF(Font font)
        {
            return _graphics.MeasureString(LayoutConsts.FULLSHAPE_TEXT,
                font, PointF.Empty, _stringFormatHorizontal);
        }

        /// <summary>
        /// 文字间隔计算
        /// </summary>
        /// <param name="width">宽</param>
        /// <param name="charCount">文字个数</param>
        /// <param name="font">字体</param>
        /// <returns>文字间隔</returns>
        public static float EqualityChars(float width, int charCount, Font font)
        {
            SizeF maxSizeF = GetMaxSizeF(font);
            double equalityCharSpace;
            if (1 < charCount)
            {
                equalityCharSpace =
                    ((width
                    - LayoutConsts.TEXT_MARGIN
                    - LayoutConsts.TEXT_MARGIN
                    - maxSizeF.Width)
                    / (charCount - 1))
                    - maxSizeF.Width;
            }
            else
            {
                equalityCharSpace = 0;
            }
            return (float)equalityCharSpace;
        }

        /// <summary>
        /// 文字间隔计算
        /// </summary>
        /// <param name="width">宽</param>
        /// <param name="charCount">文字个数</param>
        /// <param name="font">字体</param>
        /// <returns>文字间隔</returns>
        public static decimal EqualityChars(decimal width, decimal charCount, Font font)
        {
            SizeF sizef = GetMaxSizeF(font);
            decimal equalityCharSpace;
            if (1 < charCount)
            {
                equalityCharSpace =
                    ((width
                     - System.Convert.ToDecimal(LayoutConsts.TEXT_MARGIN + LayoutConsts.TEXT_MARGIN)
                    - System.Convert.ToDecimal(sizef.Width))
                    / (charCount - 1))
                    - System.Convert.ToDecimal(sizef.Width);
            }
            else
            {
                equalityCharSpace =
                    (width
                     - System.Convert.ToDecimal(LayoutConsts.TEXT_MARGIN + LayoutConsts.TEXT_MARGIN)
                    - System.Convert.ToDecimal(sizef.Width));
            }
            if (equalityCharSpace < 0)
            {
                equalityCharSpace = 0;
            }
            return equalityCharSpace;
        }
        #endregion 函数
    }
}