228 lines
8.6 KiB
C#
228 lines
8.6 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Text;
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using CPF.Drawing;
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using System.Linq;
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using System.ComponentModel;
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namespace CPF
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{
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///// <summary>
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///// 定义一个可视化元素的填充
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///// </summary>
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//public interface IViewFill
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//{
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// /// <summary>
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// /// 创建笔刷
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// /// </summary>
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// /// <param name="rect">笔刷限定区域</param>
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// /// <param name="drawingContext">绘图上下文</param>
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// /// <returns></returns>
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// Brush CreateBrush(Rect rect, DrawingContext drawingContext);
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// /// <summary>
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// /// 需要刷新界面的时候
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// /// </summary>
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// event Action Invalidated;
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//}
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/// <summary>
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/// 定义一个可视化元素的填充，默认支持 隐式转换的字符串格式，支持格式： #rrggbbaa、#rrggbb、r,g,b、r,g,b,a、或者直接设置图片，渐变格式 linear-gradient(startX startY,endX endY,color1 stop1,color2 stop2....) 颜色只能是#开头的格式,stop是0到1的数字，图片格式：url(img.gif) [no-repeat/repeat] [none/fill/uniform/UniformToFill]
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/// </summary>
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[TypeConverter(typeof(StringConverter))]
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[Description("定义一个可视化元素的填充，默认支持 隐式转换的字符串格式，支持格式： #rrggbbaa、#rrggbb、r,g,b、r,g,b,a、或者直接设置图片，渐变格式 linear-gradient(startX startY,endX endY,color1 stop1,color2 stop2....) 颜色只能是#开头的格式,stop是0到1的数字，图片格式：url(img.gif) [no-repeat/repeat] [none/fill/uniform/UniformToFill]")]
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public abstract class ViewFill : CpfObject
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{
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//public event Action Invalidated
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//{
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// add { AddHandler(value); }
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// remove { RemoveHandler(value); }
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//}
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///// <summary>
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///// 无效化笔刷区域，下次重绘
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///// </summary>
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//public void Invalidate()
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//{
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// var e = (Action)Events["Invalidated"];
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// if (e != null)
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// {
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// e();
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// }
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//}
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//protected override void OnPropertyChanged(string propertyName, object oldValue, object newValue, PropertyMetadataAttribute propertyMetadata)
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//{
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// base.OnPropertyChanged(propertyName, oldValue, newValue, propertyMetadata);
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// Invalidate();
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//}
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/// <summary>
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/// 创建笔刷
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/// </summary>
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/// <param name="rect"></param>
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/// <param name="renderScaling">DPI</param>
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/// <returns></returns>
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public abstract Brush CreateBrush(in Rect rect, in float renderScaling);
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public static ViewFill Parse(string s)
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{
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var str = s.ToLower();
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if (str.StartsWith("linear-gradient("))//
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{
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try
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{
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var l = new LinearGradientFill { };
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str = str.Substring(16).Trim(')');
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var temp = str.Split(',');
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if (temp[0].StartsWith("#"))
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{
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if (temp.Length < 2)
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{
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throw new Exception("渐变至少需要两个颜色");
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}
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foreach (var item in temp)
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{
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var t = item.Split(' ');
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l.GradientStops.Add(new GradientStop(Color.Parse(t[0].Trim()), float.Parse(t[1])));
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}
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}
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else
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{
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if (temp.Length < 4)
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{
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throw new Exception("渐变至少需要两个颜色");
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}
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if (temp[2].Trim().IndexOf(' ') < 0)
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{
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var w = 1.0f / (temp.Length - 3);
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var offset = 0f;
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for (int i = 2; i < temp.Length; i++)
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{
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var item = temp[i];
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if (i == temp.Length - 1)
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{
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offset = 1;
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}
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l.GradientStops.Add(new GradientStop(Color.Parse(item.Trim()), offset));
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offset += w;
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}
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}
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else
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{
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for (int i = 2; i < temp.Length; i++)
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{
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var item = temp[i];
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var t = item.Split(' ');
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l.GradientStops.Add(new GradientStop(Color.Parse(t[0].Trim()), float.Parse(t[1])));
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}
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}
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var t1 = temp[0].Split(' ');
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l.StartPoint = new PointField(t1[0], t1[1]);
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var t2 = temp[1].Split(' ');
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l.EndPoint = new PointField(t2[0], t2[1]);
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}
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return l;
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}
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catch (Exception e)
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{
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throw new Exception("字符串转ViewFill失败:" + s + e.Message, e);
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}
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}
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else if (str.StartsWith("url("))
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{
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return new TextureFill(s);
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}
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else if (Color.TryParse(str, out Color color))
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{
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return new SolidColorFill() { Color = color };
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}
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throw new Exception("字符串转ViewFill失败:" + s);
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}
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/// <summary>
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/// 颜色格式字符串
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/// </summary>
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/// <param name="n"></param>
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public static implicit operator ViewFill(string n)
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{
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return Parse(n);
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}
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/// <summary>
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/// Parses a color to Fill
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/// </summary>
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/// <param name="n"></param>
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public static implicit operator ViewFill(Color n)
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{
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return new SolidColorFill() { Color = n };
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}
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public static implicit operator ViewFill(Styling.HtmlColor n)
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{
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return (ViewFill)(Color)n;
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}
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public static implicit operator ViewFill(Image n)
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{
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return new TextureFill(n);
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}
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}
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//public class ViewFillTransform : CPFObject
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//{
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// public Matrix GetMatrix(Rect rect)
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// {
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// var m = Matrix.Identity;
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// Point op = new Point(OriginX.GetActualValue(rect.Width), OriginY.GetActualValue(rect.Height));
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// m.Translate(-op.X, -op.Y);
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// //m.Prepend(this.VisualTransform.Value);
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// m.Skew(SkewX, SkewY);
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// m.Scale(ScaleX, ScaleY);
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// m.Rotate(Angle);
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// m.Translate(TranslateX, TranslateY);
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// m.Translate(rect.Width / 2 + rect.X, rect.Height / 2 - rect.Y);
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// return m;
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// }
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// /// <summary>
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// /// 平移
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// /// </summary>
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// public float TranslateX { get { return (float)GetValue(); } set { SetValue(value); } }
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// /// <summary>
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// /// 平移
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// /// </summary>
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// public float TranslateY { get { return (float)GetValue(); } set { SetValue(value); } }
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// /// <summary>
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// /// 缩放
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// /// </summary>
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// [PropertyMetadata(1f)]
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// public float ScaleX { get { return (float)GetValue(); } set { SetValue(value); } }
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// /// <summary>
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// /// 缩放
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// /// </summary>
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// [PropertyMetadata(1f)]
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// public float ScaleY { get { return (float)GetValue(); } set { SetValue(value); } }
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// /// <summary>
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// /// 倾斜
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// /// </summary>
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// public float SkewX { get { return (float)GetValue(); } set { SetValue(value); } }
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// /// <summary>
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// /// 倾斜
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// /// </summary>
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// public float SkewY { get { return (float)GetValue(); } set { SetValue(value); } }
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// /// <summary>
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// /// 旋转
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// /// </summary>
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// public float Angle { get { return (float)GetValue(); } set { SetValue(value); } }
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// /// <summary>
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// /// 变换原点
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// /// </summary>
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// [PropertyMetadata(typeof(FloatField), "50%")]
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// public FloatField OriginX { get { return (FloatField)GetValue(); } set { SetValue(value); } }
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// /// <summary>
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// /// 变换原点
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// /// </summary>
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// [PropertyMetadata(typeof(FloatField), "50%")]
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// public FloatField OriginY { get { return (FloatField)GetValue(); } set { SetValue(value); } }
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//}
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}
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