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

using ComPDFKitViewer;
using ComPDFKitViewer.AnnotEvent;
using PDF_Office.Helper;
using PDF_Office.Model;
using PDF_Office.ViewModels.Tools;
using PDFSettings;
using Prism.Commands;
using Prism.Mvvm;
using Prism.Regions;
using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Data;
using System.Windows.Media;

namespace PDF_Office.ViewModels.PropertyPanel.AnnotPanel
{
    public class AnnotArgsTypeConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if (value is AnnotArgsType)
            {
                if (parameter is string)
                {
                    var args = (AnnotArgsType)value;
                    if ((string)parameter == "AnnotHighlight" && args == AnnotArgsType.AnnotHighlight)
                    {
                        return Visibility.Visible;
                    }

                    if ((string)parameter == "AnnotUnderline" && args == AnnotArgsType.AnnotUnderline)
                    {
                        return Visibility.Visible;
                    }

                    if ((string)parameter == "AnnotSquiggly" && args == AnnotArgsType.AnnotSquiggly)
                    {
                        return Visibility.Visible;
                    }

                    if ((string)parameter == "AnnotStrikeout" && args == AnnotArgsType.AnnotStrikeout)
                    {
                        return Visibility.Visible;
                    }

                    if ((string)parameter == "AnnotSticky" && args == AnnotArgsType.AnnotSticky)
                    {
                        return Visibility.Visible;
                    }
                }
            }
            return Visibility.Collapsed;
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }
    public class TextAnnotPropertyViewModel:BindableBase, INavigationAware
    {

        #region 属性
        private AnnotBasePropertyVM _basicVm = new AnnotBasePropertyVM();
        public AnnotBasePropertyVM BasicVm
        {
            get { return _basicVm; }
            set => SetProperty(ref _basicVm, value);
        }

        #endregion 属性

        public AnnotAttribEvent AnnotEvent { get; set; }
        private AnnotHandlerEventArgs Annot;
        private AnnotPropertyPanel PropertyPanel;
        public DelegateCommand<object> SelectedColorChangedCommand { get; set; }
        public DelegateCommand<object> SelectedOpacityChangedCommand { get; set; }

        public TextAnnotPropertyViewModel()
        {
            SelectedColorChangedCommand = new DelegateCommand<object>(SelectedColorChanged);
            SelectedOpacityChangedCommand = new DelegateCommand<object>(SelectedOpacityChanged);
        }

        //设置不透明度
        private void SelectedOpacityChanged(object obj)
        {
            if (obj != null)
            {
                BasicVm.FillOpacity = (double)obj;
                BasicVm.FontColor.Opacity = BasicVm.FillOpacity;
                PropertyPanel.UpdateAnnotAAttrib(AnnotAttrib.Transparency, BasicVm.FillOpacity);
                if (BasicVm.IsMultiSelected == false)
                {
                    PropertyPanel.InvokeToMyTools(BasicVm.AnnotType, BasicVm.FillOpacity);
                }
            }
        }

        //设置颜色
        public void SelectedColorChanged(object color)
        {
            if (color != null && PropertyPanel != null)
            {
                var colorValue = (Color)color;
                if (colorValue != null)
                {
                    BasicVm.FontColor = new SolidColorBrush(colorValue);
                    BasicVm.FontColor.Opacity = BasicVm.FillOpacity;
                    PropertyPanel.UpdateAnnotAAttrib(AnnotAttrib.Color, colorValue);

                    if (BasicVm.IsMultiSelected == false)
                    {
                        PropertyPanel.InvokeToMyTools(BasicVm.AnnotType, color);
                    }

                }
            }
        }

        private void SetAnnotType()
        {
            switch (BasicVm.AnnotType)
            {
                case AnnotArgsType.AnnotHighlight:
                    BasicVm.AnnotTypeTitle = "高亮";
                    break;
                case AnnotArgsType.AnnotUnderline:
                    BasicVm.AnnotTypeTitle = "下划线";
                    break;
                case AnnotArgsType.AnnotStrikeout:
                    BasicVm.AnnotTypeTitle = "删除线";
                    break;
                case AnnotArgsType.AnnotSquiggly:
                    BasicVm.AnnotTypeTitle = "波浪线";
                    break;
            }
        }

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

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

        public void OnNavigatedTo(NavigationContext navigationContext)
        {

            navigationContext.Parameters.TryGetValue<AnnotPropertyPanel>(ParameterNames.PropertyPanelContentViewModel, out PropertyPanel);
            if(PropertyPanel != null)
            {
                AnnotEvent = PropertyPanel.AnnotEvent;
                Annot = PropertyPanel.annot;
                BasicVm.AnnotType = Annot.EventType;
                BasicVm.IsMultiSelected = PropertyPanel.IsMultiSelected;
                SetAnnotType();

                //多选注释，默认通用属性颜色为高亮注释的预设颜色
                if(BasicVm.IsMultiSelected)
                {
                    DefaultAnnotProperty annotProperty = SettingHelper.GetAnnotDefaultProperty(AnnotArgsType.AnnotHighlight);
                    if (annotProperty != null)
                    {
                        BasicVm.FontColor = new SolidColorBrush(annotProperty.ForgoundColor);
                    }
                }
                else
                {
                    GetAnnotProperty();
                }
            }

        }

        private void GetAnnotProperty()
        {
            if (Annot != null)
            {
                switch (Annot.EventType)
                {
                    case AnnotArgsType.AnnotHighlight:
                      if (Annot is TextHighlightAnnotArgs)
                        {
                            var Hightlight = Annot as TextHighlightAnnotArgs;
                            BasicVm.FillOpacity = Hightlight.Transparency;
                            BasicVm.FontColor = new SolidColorBrush(Hightlight.Color);

                        }
                        break;

                    case AnnotArgsType.AnnotUnderline:
                        {
                            var Underline = Annot as TextUnderlineAnnotArgs;
                            BasicVm.FillOpacity = Underline.Transparency;
                            BasicVm.FontColor = new SolidColorBrush(Underline.Color);
                        }
                        break;

                    case AnnotArgsType.AnnotStrikeout:
                        {
                            var Strikeout = Annot as TextStrikeoutAnnotArgs;
                            BasicVm.FillOpacity = Strikeout.Transparency;
                            BasicVm.FontColor = new SolidColorBrush(Strikeout.Color);
                        }
                        break;

                    case AnnotArgsType.AnnotSquiggly:
                        {
                            var Squiggly = Annot as TextSquigglyAnnotArgs;
                            BasicVm.FillOpacity = Squiggly.Transparency;
                            BasicVm.FontColor = new SolidColorBrush(Squiggly.Color);
                        }
                        break;

                }
            }
        }
    }
}