PDFOffice_Windows_exe/PDF Office/ViewModels/PropertyPanel/AnnotPanel/FreetextAnnotPropertyViewModel.cs

using ComPDFKitViewer;
using ComPDFKitViewer.AnnotEvent;
using PDF_Master.CustomControl.CompositeControl;
using PDF_Master.Model;
using PDF_Master.Model.AnnotPanel;
using PDF_Master.Model.PropertyPanel.AnnotPanel;
using PDF_Master.ViewModels.Tools;
using PDF_Master.ViewModels.Tools.AnnotManager;
using PDFSettings;
using Prism.Commands;
using Prism.Mvvm;
using Prism.Regions;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Media;
using static Dropbox.Api.UsersCommon.AccountType;

namespace PDF_Master.ViewModels.PropertyPanel.AnnotPanel
{
    public class FreetextAnnotPropertyViewModel : BindableBase, INavigationAware
    {
        #region 文案

        private string T_title;

        public string T_Title
        {
            get { return T_title; }
            set
            {
                SetProperty(ref T_title, value);
            }
        }

        private string T_font;

        public string T_Font
        {
            get { return T_font; }
            set
            {
                SetProperty(ref T_font, value);
            }
        }

        private string T_fill;

        public string T_Fill
        {
            get { return T_fill; }
            set
            {
                SetProperty(ref T_fill, value);
            }
        }

        private void InitString()
        {
            T_Title = App.MainPageLoader.GetString("FreeText_Title");
            T_Font = App.MainPageLoader.GetString("FreeText_Font");
            T_Fill = App.MainPageLoader.GetString("FreeText_Fill");
        }

        #endregion 文案

        private FontBoardVm _fontVm = new FontBoardVm(true);

        public FontBoardVm FontVm
        {
            get { return _fontVm; }
            set { SetProperty(ref _fontVm, value); }
        }

        private AnnotCommon _basicVm = new AnnotCommon();

        public AnnotCommon BasicVm
        {
            get { return _basicVm; }
            set => SetProperty(ref _basicVm, value);
        }

        private bool _isFillFreeText = false;

        public bool IsFillFreeTextAnnot
        {
            get { return _isFillFreeText; }
            set => SetProperty(ref _isFillFreeText, value);
        }

        private bool _isCheckedTime = false;

        public bool IsCheckedTime
        {
            get { return _isCheckedTime; }
            set => SetProperty(ref _isCheckedTime, value);
        }

        private ComboDataItem _currrentDateFormat = new ComboDataItem("M/d", "format");

        public ComboDataItem CurrrentDateFormat
        {
            get { return _currrentDateFormat; }
            set => SetProperty(ref _currrentDateFormat, value);
        }

        public List<ComboDataItem> DateFormatItems { get; private set; }

        public AnnotAttribEvent AnnotEvent { get; set; }
        private FreeTextAnnotArgs Annot;
        private AnnotTransfer PropertyPanel;

        public DelegateCommand SelectedPresetFontCommand { get; set; }
        public DelegateCommand FontFamilyChangedCommand { get; set; }
        public DelegateCommand FontStyleWeightChangedCommand { get; set; }

        public DelegateCommand<object> SelectedFillOpacityCommand { get; set; }

        public DelegateCommand<object> SelectedColorCommand { get; set; }
        public DelegateCommand<object> SelectedFillColorCommand { get; set; }

        public DelegateCommand FontSizeChangedCommand { get; set; }
        public DelegateCommand<object> TextAlignCheckedCommand { get; set; }
        public DelegateCommand<object> LineModeCheckedCommand { get; set; }
        public DelegateCommand<object> SelectedOpacityValueCommand { get; set; }

        public DelegateCommand CustomFontStyleCommand { get; set; }

        public DelegateCommand ReDefineFontStyleCommand { get; set; }
        public DelegateCommand RestoreDefaultStyleCommand { get; set; }

        public DelegateCommand DateFormatChangedCommand { get; set; }
        public DelegateCommand ShowTimeCheckedChnagedCommand { get; set; }

        public event EventHandler<object> LoadPropertyHandler;

        public FreetextAnnotPropertyViewModel()
        {
            InitString();
            //文本设置
            //预设文本样式
            SelectedPresetFontCommand = new DelegateCommand(SelectedPresetFont);
            //文本字重、字体
            FontStyleWeightChangedCommand = new DelegateCommand(FontStyleWeightChanged);
            //字体
            FontFamilyChangedCommand = new DelegateCommand(FontFamilyChanged);
            //自定义
            CustomFontStyleCommand = new DelegateCommand(CustomFontStyle);
            //重新定义
            ReDefineFontStyleCommand = new DelegateCommand(ReDefineFontStyle);
            //恢复默认
            RestoreDefaultStyleCommand = new DelegateCommand(RestoreDefaultStyle);
            //颜色
            SelectedColorCommand = new DelegateCommand<object>(SelectedColor_Command);
            //填充颜色
            SelectedFillColorCommand = new DelegateCommand<object>(SelectedFillColorChange);
            //填充颜色不透明度
            SelectedFillOpacityCommand = new DelegateCommand<object>(SelectedFillOpacity);
            //大小
            FontSizeChangedCommand = new DelegateCommand(FontSizeChanged);
            //内容对齐
            TextAlignCheckedCommand = new DelegateCommand<object>(TextAlignChecked);

            //填写与签名：日期
            DateFormatChangedCommand = new DelegateCommand(DateFormatChanged);
            ShowTimeCheckedChnagedCommand = new DelegateCommand(ShowTimeCheckedChnaged);
            //MVP不上
            LineModeCheckedCommand = new DelegateCommand<object>(LineMode_Checked);
            SelectedOpacityValueCommand = new DelegateCommand<object>(SelectedOpacityValue);
            InitVariable();
        }

        private void InitVariable()
        {
            DateFormatItems = new List<ComboDataItem>();
            DateFormatItems = TextFont.GetDateFormats();
            UpdateDateFormatLists();
            InitFillColorItems();
        }

        private void InitFillColorItems()
        {
            BasicVm.FillColorItems = AnnotColorList.GetColorList(ColorSelectorType.Fill);
        }

        private void UpdateDateFormatLists()
        {
            string strTime = " HH:mm:ss";
            foreach (var item in DateFormatItems)
            {
                if (IsCheckedTime)
                    strTime = item.ValueStr + " HH:mm:ss";
                else
                    strTime = item.ValueStr;

                string stadate = System.DateTime.Now.ToString(strTime);
                item.SetContent(stadate);

                if (CurrrentDateFormat != null && item.ValueStr == CurrrentDateFormat.ValueStr)
                    CurrrentDateFormat.SetContent(stadate);
            }

            CurrrentDateFormat = new ComboDataItem(CurrrentDateFormat.ValueStr, CurrrentDateFormat.Content);
        }

        private void TextAlignChecked(object obj)
        {
            if ((string)obj != null)
            {
                switch ((string)obj)
                {
                    case "AlignLeft":
                        GetAnnotAlign(TextAlignment.Left);
                        PropertyPanel.UpdateAnnotAAttrib(AnnotAttrib.TextAlign, TextAlignment.Left);
                        break;

                    case "AlignCenter":
                        GetAnnotAlign(TextAlignment.Center);
                        PropertyPanel.UpdateAnnotAAttrib(AnnotAttrib.TextAlign, TextAlignment.Center);
                        break;

                    case "AlignRight":
                        GetAnnotAlign(TextAlignment.Right);
                        PropertyPanel.UpdateAnnotAAttrib(AnnotAttrib.TextAlign, TextAlignment.Right);
                        break;

                    case "Justify":
                        GetAnnotAlign(TextAlignment.Justify);
                        PropertyPanel.UpdateAnnotAAttrib(AnnotAttrib.TextAlign, TextAlignment.Justify);
                        break;
                }
            }
        }

        private void LineMode_Checked(object obj)
        {
            if (obj != null)
            {
                var tag = ((string)obj);
                switch (tag)
                {
                    case "Dashed":
                        AnnotEvent?.UpdateAttrib(AnnotAttrib.LineStyle, DashStyles.Dash);
                        break;

                    case "Solid":
                        AnnotEvent?.UpdateAttrib(AnnotAttrib.LineStyle, DashStyles.Solid);
                        break;
                }
                AnnotEvent?.UpdateAnnot();
            }
        }

        //从预设样式设置文本
        private void SelectedPresetFont()
        {
            if (FontVm.CurrentPresetFont != null)
            {
                var itemComboxItem = FontVm.CurrentPresetFont;

                var item = FontVm.PresetFontList.FirstOrDefault(temp => temp.mTag == itemComboxItem.ValueStr);
                if (item != null)
                {
                    FontVm.GetCurrentFontSize(item.mFontSize);

                    if (item.mFontFamily != null)
                    {
                        FontVm.GetCurrentFontFamily(item.mFontFamily.ToString(), item.mFontFamily.ToString());
                    }

                    FontVm.GetFontWeights_Style(item.mFontStyle, item.mFontWeight);

                    Dictionary<AnnotAttrib, object> AnnotAttribDir = new Dictionary<AnnotAttrib, object>();
                    AnnotAttribDir.Add(AnnotAttrib.FontSize, item.mFontSize);
                    AnnotAttribDir.Add(AnnotAttrib.FontFamily, item.mFontFamily);
                    AnnotAttribDir.Add(AnnotAttrib.FontStyle, item.mFontStyle);
                    AnnotAttribDir.Add(AnnotAttrib.FontWeight, item.mFontWeight);
                    PropertyPanel.UpdateAnnotAllAttribs(AnnotAttribDir);
                }
            }
        }

        //设置文本字重、样式
        private void FontStyleWeightChanged()
        {
            if (FontVm.CurrrentFontWeightStyle != null)
            {
                FontVm.UpdateFontWeight_Style();

                Dictionary<AnnotAttrib, object> AnnotAttribDir = new Dictionary<AnnotAttrib, object>();
                AnnotAttribDir.Add(AnnotAttrib.FontStyle, FontVm.FontStyleItem);
                AnnotAttribDir.Add(AnnotAttrib.FontWeight, FontVm.FontWeightItem);
                PropertyPanel.UpdateAnnotAllAttribs(AnnotAttribDir);
            }
        }

        private void SelectedFillOpacity(object obj)
        {
            if (obj != null)
            {
                BasicVm.FillOpacity = (double)obj;
                BasicVm.FillColor.Opacity = BasicVm.FillOpacity;
                PropertyPanel.UpdateAnnotAAttrib(AnnotAttrib.Transparency, BasicVm.FillOpacity);
            }
        }

        /// <summary>
        /// 设置颜色透明度
        /// </summary>
        /// <param name="obj"></param>
        private void SelectedOpacityValue(object obj)
        {
            if (obj != null && obj is double)
            {
                BasicVm.FillOpacity = (double)obj;
                BasicVm.FillColor.Opacity = BasicVm.FillOpacity;
                PropertyPanel.UpdateAnnotAAttrib(AnnotAttrib.Transparency, BasicVm.FillOpacity);
            }
        }

        //设置字体大小
        private void FontSizeChanged()
        {
            if (FontVm.CurrentFontSize != null)
            {
                PropertyPanel.UpdateAnnotAAttrib(AnnotAttrib.FontSize, FontVm.CurrentFontSize.Value);
                //if (BasicVm.IsMultiSelected == false)
                //    PropertyPanel.InvokeToMyTools(BasicVm.AnnotType, Annot);
            }
        }

        //设置字体样式
        private void FontFamilyChanged()
        {
            if (string.IsNullOrEmpty(FontVm.CurrentFontFamily.ValueStr) == false)
            {
                PropertyPanel.UpdateAnnotAAttrib(AnnotAttrib.FontFamily, new FontFamily(FontVm.CurrentFontFamily.ValueStr));
            }
        }

        private void SelectedFillColorChange(object obj)
        {
            if (obj != null)
            {
                var colorValue = (Color)obj;
                if (colorValue != null)
                {
                    BasicVm.FillColor = new SolidColorBrush(colorValue);
                    PropertyPanel.UpdateAnnotAAttrib(AnnotAttrib.FillColor, colorValue);
                    // BasicVm.FillColor.Opacity = BasicVmFillOpacity;
                }
            }
        }

        private void SelectedColor_Command(object obj)
        {
            if (obj != null)
            {
                var colorValue = (Color)obj;
                if (colorValue != null)
                {
                    FontVm.FontColor = new SolidColorBrush(colorValue);
                    PropertyPanel.UpdateAnnotAAttrib(AnnotAttrib.FontColor, colorValue);
                }
            }
        }

        private void CustomFontStyle()
        {
            if (FontVm.CurrentPresetFont != null)
            {
                ContextMenu menu;
                if (FontVm.CurrentPresetFont.ValueStr == "Custom")
                {
                    menu = SelectAnnotContextMenu(false);
                }
                else
                {
                    menu = SelectAnnotContextMenu(true);
                }

                if (menu != null)
                {
                    menu.IsOpen = true;
                }
            }
        }

        private ContextMenu SelectAnnotContextMenu(bool isEnable)
        {
            var popMenu = App.Current.FindResource("CustomFontStyleFlyoutMenu") as ContextMenu;
            if (popMenu != null && popMenu.Items.Count == 2)
            {
                //用所选部分重新定义
                MenuItem menuItem = popMenu.Items[0] as MenuItem;
                menuItem.IsEnabled = isEnable;
                menuItem.Command = ReDefineFontStyleCommand;
                //恢复默认预设样式
                menuItem = popMenu.Items[1] as MenuItem;
                menuItem.IsEnabled = isEnable;
                menuItem.Command = RestoreDefaultStyleCommand;
            }
            return popMenu;
        }

        public List<PresetFontItem> FontStyleList = new List<PresetFontItem>();

        /// <summary>
        /// 重新定义
        /// </summary>
        private void ReDefineFontStyle()
        {
            var item = FontVm.PresetFontList.FirstOrDefault(temp => temp.mTag == FontVm.CurrentPresetFont.ValueStr);
            if (item == null) return;

            item.mFontFamily = new FontFamily(FontVm.CurrentFontFamily.ValueStr);

            if (FontVm.CurrrentFontWeightStyle.ValueStr == "Bold")
            {
                item.mFontStyle = FontStyles.Normal;
                item.mFontWeight = FontWeights.Bold;
            }
            else if (FontVm.CurrrentFontWeightStyle.ValueStr == "Regular")
            {
                item.mFontStyle = FontStyles.Normal;
                item.mFontWeight = FontWeights.Normal;
            }
            else if (FontVm.CurrrentFontWeightStyle.ValueStr == "Italic")
            {
                item.mFontStyle = FontStyles.Italic;
                item.mFontWeight = FontWeights.Normal;
            }
            else
            {
                item.mFontStyle = FontStyles.Italic;
                item.mFontWeight = FontWeights.Bold;
            }

            item.mFontSize = (int)FontVm.CurrentFontSize.Value;

            FontVm.CurrentPresetFont = new ComboDataItem(item.mTag, item.mTagContent);
            SelectedPresetFont();
            //if (BasicVm.IsMultiSelected == false)
            //    PropertyPanel.InvokeToMyTools(BasicVm.AnnotType, Annot);
        }

        private void RestoreDefaultStyle()
        {
            var defaultlists = TextFont.GetPresetFontStyle();
            if (FontVm.CurrentPresetFont.ValueStr != "Custom")
            {
                var defaulItem = defaultlists.FirstOrDefault(temp => temp.mTag == FontVm.CurrentPresetFont.ValueStr);
                if (defaulItem != null)
                {
                    var currentItem = FontVm.PresetFontList.FirstOrDefault(temp => temp.mTag == FontVm.CurrentPresetFont.ValueStr);
                    if (currentItem != null)
                    {
                        currentItem.mTagContent = defaulItem.mTagContent;
                        currentItem.mFontStyle = defaulItem.mFontStyle;
                        currentItem.mFontWeight = defaulItem.mFontWeight;
                        currentItem.mFontFamily = defaulItem.mFontFamily;
                        currentItem.mFontSize = defaulItem.mFontSize;
                        FontVm.GetCurrentFontFamily(currentItem.mFontFamily.ToString(), currentItem.mFontFamily.ToString());
                        FontVm.GetCurrentFontSize(currentItem.mFontSize);
                        FontVm.GetFontWeights_Style(currentItem.mFontStyle, currentItem.mFontWeight);

                        FontVm.CurrentPresetFont = new ComboDataItem(defaulItem.mTag, defaulItem.mTagContent);
                        SelectedPresetFont();
                    }
                }
            }
        }

        private void DateFormatChanged()
        {
            if (CurrrentDateFormat != null)
            {
                if (IsCheckedTime)
                    UpdateDateFormatLists();

                PropertyPanel.UpdateAnnotAAttrib(AnnotAttrib.NoteText, CurrrentDateFormat.Content);
            }
        }

        private void ShowTimeCheckedChnaged()
        {
            if (CurrrentDateFormat != null)
            {
                UpdateDateFormatLists();
                PropertyPanel.UpdateAnnotAAttrib(AnnotAttrib.NoteText, CurrrentDateFormat.Content);
            }
        }

        public bool IsNavigationTarget(NavigationContext navigationContext)
        {
            return true;
        }

        public void OnNavigatedFrom(NavigationContext navigationContext)
        {
            BasicVm.IsMultiSelected = false;
            //  IsCheckedTime = false;
        }

        public void OnNavigatedTo(NavigationContext navigationContext)
        {
            navigationContext.Parameters.TryGetValue<AnnotTransfer>(ParameterNames.PropertyPanelContentViewModel, out PropertyPanel);
            if (PropertyPanel != null)
            {
                AnnotEvent = PropertyPanel.AnnotEvent;
                Annot = PropertyPanel.annot as FreeTextAnnotArgs;

                LoadPropertyHandler?.Invoke(this, Annot);
                BasicVm.AnnotType = PropertyPanel.annot.EventType;
                BasicVm.AnnotTypeTitle = "文字";
                BasicVm.IsMultiSelected = PropertyPanel.IsMultiSelected;
                IsFillFreeTextAnnot = PropertyPanel.IsTextFill;
                if (BasicVm.IsMultiSelected)
                {
                    IsAttributeEquals();
                    BasicVm.IsSolidLine = BasicVm.IsDashLine = false;
                }
                else
                {
                    GetAnnotProperty();
                }

                IsFillFreeTextAnnot = PropertyPanel.IsTextFill;
            }
        }

        /// <summary>
        /// 多选的注释
        /// </summary>
        private List<FreeTextAnnotArgs> ConvertLists()
        {
            List<FreeTextAnnotArgs> FreeTextLists = new List<FreeTextAnnotArgs>();
            foreach (var item in PropertyPanel.annotlists)
            {
                var itemFreeText = item as FreeTextAnnotArgs;
                if (itemFreeText != null)
                {
                    FreeTextLists.Add(itemFreeText);
                }
            }

            if (FreeTextLists.Count != PropertyPanel.annotlists.Count)
                return null;
            else
                return FreeTextLists;
        }

        private void IsAttributeEquals()
        {
            var list = ConvertLists();
            if (list != null)
            {
                var temp = list[0];
                Dictionary<string, bool> isNoEqualsDir = new Dictionary<string, bool>();
                isNoEqualsDir.Add("FontFamily", false);
                isNoEqualsDir.Add("FontSize", false);
                isNoEqualsDir.Add("FontStyleFontWeight", false);
                isNoEqualsDir.Add("FontColor", false);
                isNoEqualsDir.Add("FillColor", false);
                isNoEqualsDir.Add("TextAglin", false);

                foreach (var item in list)
                {
                    if (item == list[0])
                        continue;

                    if (temp.Align != item.Align)
                    {
                        isNoEqualsDir["TextAglin"] = true;
                        FontVm.StrTextAlign = "None";
                    }

                    if (temp.FontFamily != item.FontFamily)
                    {
                        isNoEqualsDir["FontFamily"] = true;
                        FontVm.CurrentFontFamily = null;
                    }

                    if (temp.FontSize != item.FontSize)
                    {
                        isNoEqualsDir["FontSize"] = true;
                        FontVm.CurrentFontSize = null;
                    }

                    if (temp.FontStyle != item.FontStyle || temp.FontWeight != item.FontWeight)
                    {
                        isNoEqualsDir["FontStyleFontWeight"] = true;
                        FontVm.CurrrentFontWeightStyle = null;
                    }

                    if (isNoEqualsDir["FontFamily"] == true || isNoEqualsDir["FontSize"] == true || isNoEqualsDir["FontStyleFontWeight"] == true)
                    {
                        FontVm.CurrentPresetFont = null;
                    }

                    if (isNoEqualsDir["FontColor"] == false)
                    {
                        if (temp.FontColor.A != item.FontColor.A || temp.FontColor.R != item.FontColor.R || temp.FontColor.G != item.FontColor.G || temp.FontColor.B != item.FontColor.B)
                        {
                            FontVm.FontColor = new SolidColorBrush(Color.FromArgb(0x01, 0xff, 0xff, 0xff));
                            isNoEqualsDir["FontColor"] = true;
                        }
                    }

                    if (isNoEqualsDir["FillColor"] == false)
                    {
                        if (temp.BgColor.A != item.BgColor.A || temp.BgColor.R != item.BgColor.R || temp.BgColor.G != item.BgColor.G || temp.BgColor.B != item.BgColor.B)
                        {
                            BasicVm.FillColor = new SolidColorBrush(Color.FromArgb(0x01, 0xff, 0xff, 0xff));
                            isNoEqualsDir["FillColor"] = true;
                        }
                    }
                }

                ////以下是多选注释的属性相等时
                if (isNoEqualsDir["TextAglin"] == false)
                {
                    GetAnnotAlign(temp.Align);
                }

                if (isNoEqualsDir["FontFamily"] == false)
                {
                    FontVm.GetCurrentFontFamily(temp.FontFamily.ToString(), temp.FontFamily.ToString());
                }

                if (isNoEqualsDir["FontSize"] == false)
                {
                    FontVm.GetCurrentFontSize((int)temp.FontSize);
                }

                if (isNoEqualsDir["FontStyleFontWeight"] == false)
                {
                    FontVm.GetFontWeights_Style(temp.FontStyle, temp.FontWeight);
                }

                if (isNoEqualsDir["FontColor"] == false)
                {
                    FontVm.FontColor = new SolidColorBrush(temp.FontColor);
                }

                if (isNoEqualsDir["FillColor"] == false)
                {
                    FontVm.FontColor = new SolidColorBrush(temp.BgColor);
                }
            }
        }

        private void GetAnnotProperty()
        {
            BasicVm.FillColor = new SolidColorBrush(Annot.BgColor);
            BasicVm.FillOpacity = Annot.Transparency;

            FontVm.FontColor = new SolidColorBrush(Annot.FontColor);
            FontVm.GetCurrentFontSize((int)Annot.FontSize);
            FontVm.GetCurrentPresetFont(Annot);
            FontVm.GetCurrentFontFamily(Annot.FontFamily.ToString(), Annot.FontFamily.ToString());
            FontVm.GetFontWeights_Style(Annot.FontStyle, Annot.FontWeight);

            GetTimeFormat();
            GetAnnotAlign(Annot.Align);
        }

        //填写与签名
        private void GetTimeFormat()
        {
            if (IsFillFreeTextAnnot == false)
                return;

            if (string.IsNullOrEmpty(Annot.TextContent))
            {
                if (CurrrentDateFormat != null)
                {
                    if (IsCheckedTime)
                        UpdateDateFormatLists();

                    PropertyPanel.UpdateAnnotAAttrib(AnnotAttrib.NoteText, CurrrentDateFormat.Content);
                }
                return;
            }
            DateTime dtDate;
            bool isTime = false;
            foreach (var item in DateFormatItems)
            {
                var strFormat = "";
                var strArr = Annot.TextContent.Split(' ');
                if (strArr != null && strArr.Count() == 2)
                {
                    strFormat = item.ValueStr + " HH:mm:ss";
                }
                else
                {
                    strFormat = item.ValueStr;
                }

                if (DateTime.TryParseExact(Annot.TextContent, strFormat, System.Globalization.CultureInfo.InvariantCulture, System.Globalization.DateTimeStyles.AdjustToUniversal, out dtDate))
                {
                    if (strArr != null && strArr.Count() == 2)
                    {
                        isTime = true;
                    }

                    foreach (var item2 in DateFormatItems)
                    {
                        string stadate = System.DateTime.Now.ToString(strFormat);
                        item.SetContent(stadate);
                    }

                    CurrrentDateFormat = new ComboDataItem(item.ValueStr, item.Content);

                    break;
                }
            }

            IsCheckedTime = isTime;
        }

        //文本内容对齐
        private void GetAnnotAlign(TextAlignment align)
        {
            switch (align)
            {
                case TextAlignment.Left:
                    FontVm.StrTextAlign = "Left";
                    break;

                case TextAlignment.Center:
                    FontVm.StrTextAlign = "Center";
                    break;

                case TextAlignment.Right:
                    FontVm.StrTextAlign = "Right";
                    break;

                case TextAlignment.Justify:
                    FontVm.StrTextAlign = "Justify";
                    break;

                default:
                    FontVm.StrTextAlign = "None";
                    break;
            }
        }
    }
}