327 lines
11 KiB
C#
327 lines
11 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 CPF.Controls;
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namespace CPF
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{
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/// <summary>
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/// 纹理图片填充
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/// </summary>
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public class TextureFill : ViewFill, Design.ISerializerCode
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{
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public virtual Image Image
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{
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get { return GetValue<Image>(); }
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set { SetValue(value); }
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}
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/// <summary>
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/// 纹理图片填充
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/// </summary>
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/// <param name="image"></param>
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public TextureFill(Image image)
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{
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this.Image = image;
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}
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public TextureFill()
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{
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}
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string path;
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/// <summary>
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/// 纹理图片路径，可以是URL或者文件路径或者res://内嵌资源路径 格式：url(img.gif) [no-repeat/repeat(clamp/tile)] [none/fill/uniform/UniformToFill] [x,y,w,h] 需要按顺序
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/// </summary>
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/// <param name="path"></param>
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public TextureFill(string path)
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{
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try
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{
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if (path.StartsWith("url("))
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{
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var index = path.LastIndexOf(')');
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Styling.ResourceManager.GetImage(path.Substring(4, index - 4), a =>
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{
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Threading.Dispatcher.MainThread.Invoke(() =>
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{
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if (a == null)
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{
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Image = Styling.ResourceManager.ErrorImage;
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}
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else
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{
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Image = a;
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}
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});
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});
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if (path.Length > index + 2)
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{
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var temp = path.Substring(index + 2).Split(' ');
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if (temp.Length > 0 && !string.IsNullOrWhiteSpace(temp[0]))
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{
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var t = temp[0].ToLower().Trim();
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if (t == "no-repeat" || t == "clamp")
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{
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WrapMode = WrapMode.Clamp;
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}
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else
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{
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WrapMode = WrapMode.Tile;
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}
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}
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if (temp.Length > 1 && !string.IsNullOrWhiteSpace(temp[1]))
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{
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Stretch = (Stretch)Enum.Parse(typeof(Stretch), temp[1], true);
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}
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if (temp.Length > 2 && !string.IsNullOrWhiteSpace(temp[2]))
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{
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ImageClip = temp[2];
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}
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}
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}
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else
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{
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Styling.ResourceManager.GetImage(path, a =>
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{
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Threading.Dispatcher.MainThread.Invoke(() =>
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{
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if (a == null)
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{
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Image = Styling.ResourceManager.ErrorImage;
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}
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else
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{
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Image = a;
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}
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});
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});
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}
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}
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catch (Exception e)
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{
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throw new Exception("图片路径格式不对：" + path + e.Message);
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}
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this.path = path;
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}
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/// <summary>
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/// 图片的裁剪区域
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/// </summary>
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public Rect ImageClip
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{
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get { return GetValue<Rect>(); }
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set { SetValue(value); }
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}
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/// <summary>
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/// 图片填充模式
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/// </summary>
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[PropertyMetadata(Stretch.None)]
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public Stretch Stretch
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{
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get { return GetValue<Stretch>(); }
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set { SetValue(value); }
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}
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/// <summary>
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/// 平铺模式
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/// </summary>
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public WrapMode WrapMode
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{
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get { return GetValue<WrapMode>(); }
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set { SetValue(value); }
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}
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Bitmap cacheImage;
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[PropertyChanged(nameof(ImageClip))]
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void RegisterImageClip(object newValue, object oldValue, PropertyMetadataAttribute attribute)
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{
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var rect = (Rect)newValue;
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if (rect.X < 0 || rect.Y < 0)
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{
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throw new Exception("x,y不能小于0");
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}
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var img = Image;
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if (cacheImage != null)
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{
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cacheImage.Dispose();
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cacheImage = null;
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}
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if (img != null && rect.Width > 0 && rect.Height > 0)
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{
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cacheImage = new Bitmap((int)rect.Width, (int)rect.Height);
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using (DrawingContext dc = DrawingContext.FromBitmap(cacheImage))
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{
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dc.Clear(Color.Transparent);
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dc.DrawImage(img, new Rect(0, 0, rect.Width, rect.Height), rect);
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}
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}
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}
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[PropertyChanged(nameof(Image))]
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void RegisterImage(object newValue, object oldValue, PropertyMetadataAttribute attribute)
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{
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if (cacheImage != null)
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{
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cacheImage.Dispose();
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cacheImage = null;
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}
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Rect rect = ImageClip;
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var img = newValue as Image;
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if (img != null && rect.Width > 0 && rect.Height > 0)
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{
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cacheImage = new Bitmap((int)rect.Width, (int)rect.Height);
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using (DrawingContext dc = DrawingContext.FromBitmap(cacheImage))
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{
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dc.Clear(Color.Transparent);
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dc.DrawImage(img, new Rect(0, 0, rect.Width, rect.Height), rect);
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}
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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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// if (propertyName == nameof(ImageClip))
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// {
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// var rect = (Rect)newValue;
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// if (rect.X < 0 || rect.Y < 0)
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// {
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// throw new Exception("x,y不能小于0");
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// }
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// var img = Image;
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// if (cacheImage != null)
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// {
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// cacheImage.Dispose();
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// cacheImage = null;
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// }
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// if (img != null && rect.Width > 0 && rect.Height > 0)
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// {
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// cacheImage = new Bitmap((int)rect.Width, (int)rect.Height);
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// using (DrawingContext dc = DrawingContext.FromBitmap(cacheImage))
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// {
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// dc.Clear(Color.Transparent);
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// dc.DrawImage(img, new Rect(0, 0, rect.Width, rect.Height), rect);
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// }
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// }
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// }
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// else if (propertyName == nameof(Image))
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// {
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// if (newValue == null)
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// {
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// throw new Exception("Image不能为null");
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// }
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// else
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// {
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// if (cacheImage != null)
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// {
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// cacheImage.Dispose();
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// cacheImage = null;
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// }
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// Rect rect = ImageClip;
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// var img = newValue as Image;
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// if (img != null && rect.Width > 0 && rect.Height > 0)
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// {
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// cacheImage = new Bitmap((int)rect.Width, (int)rect.Height);
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// using (DrawingContext dc = DrawingContext.FromBitmap(cacheImage))
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// {
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// dc.Clear(Color.Transparent);
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// dc.DrawImage(img, new Rect(0, 0, rect.Width, rect.Height), rect);
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// }
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// }
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// }
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// }
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//}
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protected override void Dispose(bool disposing)
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{
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base.Dispose(disposing);
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if (cacheImage != null)
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{
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cacheImage.Dispose();
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cacheImage = null;
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}
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}
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public override Brush CreateBrush(in Rect rect, in float renderScaling)
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{
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var image = Image;
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if (image == null)
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{
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return new SolidColorBrush(Color.Transparent);
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}
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Image img = cacheImage == null ? image : cacheImage;
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var m = Matrix.Identity;
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var w = img.Width;
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var h = img.Height;
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var ww = rect.Width;
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var hh = rect.Height;
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OverrideMatrix(ref m, renderScaling);
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switch (Stretch)
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{
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case Stretch.None:
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break;
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case Stretch.Fill:
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m.Scale(rect.Width / img.Width, rect.Height / img.Height);
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break;
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case Stretch.Uniform:
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if (w / rect.Width > h / rect.Height)
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{
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hh = rect.Width * h / w;
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}
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else
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{
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ww = rect.Height * w / h;
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}
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m.Scale(ww / img.Width, hh / img.Height);
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m.Translate((rect.Width - ww) / 2, (rect.Height - hh) / 2);
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break;
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case Stretch.UniformToFill:
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if (w / rect.Width < h / rect.Height)
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{
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hh = rect.Width * h / w;
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}
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else
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{
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ww = rect.Height * w / h;
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}
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m.Scale(ww / img.Width, hh / img.Height);
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m.Translate((rect.Width - ww) / 2, (rect.Height - hh) / 2);
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break;
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}
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m.Translate(rect.X, rect.Y);
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return new TextureBrush(img, WrapMode, m);
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}
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protected virtual void OverrideMatrix(ref Matrix matrix, in float renderScaling)
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{
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}
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public override string GetCreationCode()
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{
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if (!string.IsNullOrEmpty(path))
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{
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return "\"" + path + "\"";
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}
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else
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{
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return base.GetCreationCode();
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}
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}
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public override string ToString()
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{
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if (!string.IsNullOrEmpty(path))
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{
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return path;
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}
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return base.ToString();
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}
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}
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}
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