add: 图片数据类型

Author: chenxuuu

Image2Display/I2D_Test/ImageDataTest.cs

@@ -0,0 +1,62 @@
+using Image2Display.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace I2D_Test
+{
+    public class ImageDataTest
+    {
+        [Theory]
+        [InlineData(1, 1)]
+        [InlineData(100, 100)]
+        [InlineData(1000, 20)]
+        public void NewSize(int w,int h)
+        {
+            _ = new ImageData(w, h);
+        }
+
+        [Theory]
+        [InlineData(1, 1,10,10)]
+        [InlineData(100, 100, 10, 10)]
+        public void CropOk(int x, int y,int w, int h)
+        {
+            var img = new ImageData(1000, 1000);
+            Assert.True(img.Crop(x, y, w, h));
+        }
+        [Theory]
+        [InlineData(100, 100, 10, 10000)]
+        [InlineData(1000, 20, 10, 10)]
+        public void CropFail(int x, int y, int w, int h)
+        {
+            var img = new ImageData(1000, 1000);
+            Assert.False(img.Crop(x, y, w, h));
+        }
+
+        [Theory]
+        [InlineData(1, 1)]
+        [InlineData(100, 2000)]
+        [InlineData(1000, 20)]
+        public void Resize(int w, int h)
+        {
+            var img = new ImageData(1000, 1000);
+            Assert.True(img.Resize(w, h));
+        }
+
+        [Theory]
+        [InlineData(1, 1)]
+        [InlineData(100, 100)]
+        [InlineData(1000, 20)]
+        public void Expand(int w, int h)
+        {
+            var img = new ImageData(1000, 1000);
+            var r = img.Expand(w, h);
+            if (w > img.Width || h > img.Height)
+                Assert.True(r);
+            else
+                Assert.False(r);
+        }
+    }
+}

Image2Display/Image2Display/Models/ImageData.cs

@@ -0,0 +1,91 @@
+using SixLabors.ImageSharp;
+using SixLabors.ImageSharp.PixelFormats;
+using SixLabors.ImageSharp.Processing;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Image2Display.Models
+{
+    public class ImageData
+    {
+        /// <summary>
+        /// 图片的原始数据
+        /// </summary>
+        private Image<Rgba32> Raw;
+
+        /// <summary>
+        /// 图片宽度
+        /// </summary>
+        public int Width => Raw.Width;
+        /// <summary>
+        /// 图片高度
+        /// </summary>
+        public int Height => Raw.Height;
+
+        /// <summary>
+        /// 新建空的图片数据
+        /// </summary>
+        /// <param name="width">宽度</param>
+        /// <param name="height">高度</param>
+        public ImageData(int width, int height) => Raw = new Image<Rgba32>(width, height);
+
+        /// <summary>
+        /// 从已有图片数据导入图片
+        /// </summary>
+        /// <param name="path">文件路径</param>
+        public ImageData(string path) => Raw = Image.Load<Rgba32>(path);
+
+
+        /// <summary>
+        /// 裁剪图片区域
+        /// </summary>
+        /// <param name="x">左上角起始点位置x</param>
+        /// <param name="y">左上角起始点位置y</param>
+        /// <param name="width">裁剪区域宽度</param>
+        /// <param name="height">裁剪区域高度</param>
+        /// <returns>是否成功</returns>
+        public bool Crop(int x, int y, int width, int height)
+        {
+            if (x < 0 || y < 0 || width < 0 || height < 0)
+                return false;
+            if (x + width > Raw.Width || y + height > Raw.Height)
+                return false;
+            Raw.Mutate(ctx => ctx.Crop(new Rectangle(x,y,width,height)));
+            return true;
+        }
+
+        /// <summary>
+        /// 调整图片大小（会被拉伸）
+        /// </summary>
+        /// <param name="width">目标宽度</param>
+        /// <param name="height">目标高度</param>
+        /// <returns>是否成功</returns>
+        public bool Resize(int width, int height)
+        {
+            if (width < 0 || height < 0)
+                return false;
+            Raw.Mutate(ctx => ctx.Resize(width, height));
+            return true;
+        }
+
+
+        /// <summary>
+        /// 拓展图片大小（向右下方拓展空白区域）
+        /// </summary>
+        /// <param name="width">目标宽度</param>
+        /// <param name="height">目标高度</param>
+        /// <returns>是否成功</returns>
+        public bool Expand(int width, int height)
+        {
+            if (width < Width || height < Height)//不能小于当前尺寸
+                return false;
+            var n = new Image<Rgba32>(width, height);
+            n.Mutate(ctx => ctx.DrawImage(Raw, new Point(0, 0), 1));
+            Raw = n;
+            return true;
+        }
+    }
+}

Image2Display/Image2Display/ViewModels/SettingsViewModel.cs

@@ -30,6 +30,10 @@ public partial class SettingsViewModel : ViewModelBase
         [ObservableProperty]
         private string[] _languagesList = SettingModel.SupportLanguages;
 
+        /// <summary>
+        /// 被选中的语言index
+        /// 不会在别处被更改，所以不需要notify
+        /// </summary>
         public int LanguagesSelected
         {
             get
@@ -49,6 +53,7 @@ public int LanguagesSelected
             {
                 Utils.Settings.Language = LanguagesList[value];
                 Utils.ChangeLanguage(Utils.Settings.Language);
+                Utils.SaveSettings();
             }
         }