PDFOffice_Windows_exe/PDF Office/ViewModels/PropertyPanel/FontSetModeVM.cs

using PDF_Office.CustomControl.CompositeControl;
using PDF_Office.Model.PropertyPanel.AnnotPanel;
using Prism.Mvvm;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Media;

namespace PDF_Office.ViewModels.PropertyPanel
{
    //属性触发事件的标识
    public enum FontSetModeType
    {
        PresetFontStyes,
        FontFamilys,
        FontSizes,
        FontWeight_Style,
        FontColor

    }
    public class FontSetMode : BindableBase
    {
        #region 变量
        public event EventHandler<FontSetModeType> ChangedValue;
        public List<ComboDataItem> FontFamilyItems { get; protected set; }
        public List<ComboDataItem> FontStyleItems { get; protected set; }
        public List<ComboDataItem> PresetTextItems { get; protected set; }

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

        #endregion

        #region 初始化下拉框或列表默认的数据
        protected void InitBaseVariable()
        {
            InitBase_PresetFontStyles();
            InitBase_FontFamilys();
            InitBase_FontStyles();
        }
        //预设字体样式
        private void InitBase_PresetFontStyles()
        {
            PresetTextItems = new List<ComboDataItem>();
            FontStyleList = TextFont.GetPresetFontStyle();

            foreach (var item in FontStyleList)
            {
                ComboDataItem itemData = new ComboDataItem(item.mTag, item.mTagContent);
                PresetTextItems.Add(itemData);
            }

        }
        //字体
        private void InitBase_FontFamilys()
        {
            FontFamilyItems = TextFont.GetFamily();
        }
        //字重
        private void InitBase_FontStyles()
        {
            FontStyleItems = TextFont.GetFontStyle();
        }

        #endregion


        #region 属性

        private ComboDataItem _presetTextData;
        public ComboDataItem PresetTextData
        {
            get { return _presetTextData; }
            set
            {
                SetProperty(ref _presetTextData, value);
                if (_presetTextData != null)
                {
                    ChangedValue?.Invoke(_presetTextData.ValueStr, FontSetModeType.PresetFontStyes);
                }
            }
        }

        //字体样式
        private ComboDataItem _fontFamilyData;
        public ComboDataItem FontFamilyData
        {
            get { return _fontFamilyData; }
            set
            {
                SetProperty(ref _fontFamilyData, value);
                if(_fontFamilyData != null)
                {
                    ChangedValue?.Invoke(_fontFamilyData.ValueStr, FontSetModeType.FontFamilys);
                }
            }
        }

        //字体大小
        private ComboDataItem _fontSizeData = new ComboDataItem(6);
        public ComboDataItem FontSizeData
        {
            get { return _fontSizeData; }
            set
            {
                SetProperty(ref _fontSizeData, value);
                if(_fontSizeData != null)
                {
                    ChangedValue?.Invoke(_fontSizeData.Value, FontSetModeType.FontSizes);
                }
            }
        }

        //FontStyle & FontWeight

        private FontStyle _fontStyle;
        public FontStyle FontStyleItem
        {
            get { return _fontStyle; }
            set { SetProperty(ref _fontStyle, value); }
        }

        private FontWeight _fontWeight;
        public FontWeight FontWeightItem
        {
            get { return _fontWeight; }
            set { SetProperty(ref _fontWeight, value); }
        }

        private ComboDataItem _fontWeightStyleItem;
        public ComboDataItem FontWeightStyleItem
        {
            get { return _fontWeightStyleItem; }
            set
            {
                SetProperty(ref _fontWeightStyleItem, value);
                if (_fontWeightStyleItem.ValueStr != null && string.IsNullOrEmpty((string)_fontWeightStyleItem.ValueStr) == false)
                {
                    if(_fontWeightStyleItem != null)
                    {
                        ChangedValue?.Invoke(null, FontSetModeType.FontWeight_Style);
                    }
                }
            }
        }

        protected void UpdateFontWeight_Style()
        {
            switch (FontWeightStyleItem.ValueStr)
            {
                case "Regular":
                    FontStyleItem = FontStyles.Normal;
                    FontWeightItem = FontWeights.Normal;
                    break;

                case "Bold":
                    FontStyleItem = FontStyles.Normal;
                    FontWeightItem = FontWeights.Bold;
                    break;

                case "Italic":
                    FontStyleItem = FontStyles.Italic;
                    FontWeightItem = FontWeights.Normal;
                    break;

                case "Bold Italic":
                    FontStyleItem = FontStyles.Italic;
                    FontWeightItem = FontWeights.Bold;
                    break;
            }
        }
        //颜色
        private Brush selectColor = new SolidColorBrush(Colors.Black);
        public Brush SelectColor
        {
            get { return selectColor; }
            set
            {
                SetProperty(ref selectColor, value);
                ChangedValue?.Invoke((selectColor as SolidColorBrush).Color, FontSetModeType.FontColor);
            }
        }

        #endregion
    }
}