Update 支持从网站上图片拖拽创建截图

README.md

@@ -66,6 +66,10 @@ A best screenshot small tool (support high dpi screenshots)
 
   - ###### 配置方法：选项 -> 杂项设置 -> 其他 -> 显示放大镜
 
+- 支持从网站上图片拖拽创建截图
+
+  - ###### 从网站拖拽图片到某个截图中会自动创建截图（该功能需要联网，因为需要下载对应的网站图片）
+
 ---
 
 ## 目前已知问题

SETUNA/Main/Common/Utils.cs

@@ -39,33 +39,49 @@ public static Bitmap FromPath(string path)
         {
             if (File.Exists(path))
             {
+
+                byte[] buffer = null;
+                MemoryStream stream = null;
+                Bitmap bitmap = null;
+
                 try
                 {
                     using (var fs = new FileStream(path, FileMode.Open, FileAccess.Read))
                     {
-                        var bitmap = new Bitmap(fs);
-                        bitmap.MakeTransparent();
-                        return bitmap;
+                        buffer = new byte[fs.Length];
+                        stream = new MemoryStream(buffer);
+                        fs.CopyTo(stream);
                     }
-                }
-                catch (ArgumentException ex)
-                {
-                    try
+
+                    var imageType = ImageUtils.GetImageType(buffer);
+                    switch (imageType)
                     {
-                        using (var webp = new WebPWrapper.WebP())
-                        {
-                            var bitmap = webp.Load(path);
-                            bitmap.MakeTransparent();
+                        case ImageType.PNG:
+                            bitmap = new Bitmap(stream);
+                            bitmap.MakeTransparent(Color.White);
+                            return bitmap;
+                        case ImageType.WEBP:
+                            using (var webp = new WebPWrapper.WebP())
+                            {
+                                bitmap = webp.Decode(buffer);
+                                return bitmap;
+                            }
+                        default:
+                            bitmap = new Bitmap(stream);
                             return bitmap;
-                        }
                     }
-                    catch { }
                 }
                 catch (Exception ex)
                 {
                     Console.WriteLine(ex);
                 }
-
+                finally
+                {
+                    if (stream != null)
+                    {
+                        stream.Dispose();
+                    }
+                }
             }
 
             return null;
@@ -114,5 +130,56 @@ static bool RemoteCertificateValidate(object sender, X509Certificate cert, X509C
             return true;
         }
     }
+
+    static class ImageUtils
+    {
+        public static ImageType GetImageType(byte[] imageBuffer)
+        {
+            if (imageBuffer.Length > 3 &&
+                imageBuffer[1] == 0x50 &&
+               imageBuffer[2] == 0x4E &&
+               imageBuffer[3] == 0x47
+                )
+            {
+                return ImageType.PNG;
+            }
+            else if (imageBuffer.Length > 9 &&
+                imageBuffer[6] == 0x4A &&
+               imageBuffer[7] == 0x46 &&
+               imageBuffer[8] == 0x49 &&
+               imageBuffer[9] == 0x46
+                )
+            {
+                return ImageType.JPEG;
+            }
+            else if (imageBuffer.Length > 10 &&
+                imageBuffer[8] == 0x57 &&
+               imageBuffer[9] == 0x45 &&
+               imageBuffer[10] == 0x42
+                )
+            {
+                return ImageType.WEBP;
+            }
+            else if (imageBuffer.Length > 2 &&
+               imageBuffer[0] == 0x47 &&
+              imageBuffer[1] == 0x49 &&
+              imageBuffer[2] == 0x46
+               )
+            {
+                return ImageType.GIF;
+            }
+
+            return ImageType.Unknown;
+        }
+    }
+
+    public enum ImageType
+    {
+        Unknown,
+        JPEG,
+        PNG,
+        WEBP,
+        GIF,
+    }
 }
 

SETUNA/Main/Option/OptionForm.cs

@@ -79,6 +79,8 @@ private void LoadSetunaOption()
             radioButton1_fullscreenCursor.Checked = _so.Setuna.FullscreenCursorSolid;
             radioButton2_fullscreenCursor.Checked = !_so.Setuna.FullscreenCursorSolid;
             pictureBox_fullscreenCursor.BackColor = _so.Setuna.FullscreenCursorLineColor;
+
+            checkBox_transparent.Checked = _so.Setuna.BackgroundTransparentEnabled;
         }
 
         // Token: 0x060002D5 RID: 725 RVA: 0x00013908 File Offset: 0x00011B08
@@ -153,6 +155,13 @@ private void WriteSetunaOption()
             _so.Setuna.FullscreenCursorColorR = pictureBox_fullscreenCursor.BackColor.R;
             _so.Setuna.FullscreenCursorColorG = pictureBox_fullscreenCursor.BackColor.G;
             _so.Setuna.FullscreenCursorColorB = pictureBox_fullscreenCursor.BackColor.B;
+
+            _so.Setuna.BackgroundTransparentEnabled = checkBox_transparent.Checked;
+
+            foreach (var item in Mainform.Instance.scrapBook)
+            {
+                item.Refresh();
+            }
         }
 
         // Token: 0x060002D6 RID: 726 RVA: 0x00013D84 File Offset: 0x00011F84

SETUNA/Main/Option/OptionForm.resx

@@ -120,7 +120,4 @@
   <metadata name="toolTip1.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
     <value>17, 17</value>
   </metadata>
-  <metadata name="toolTip1.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
-    <value>17, 17</value>
-  </metadata>
 </root>

SETUNA/Main/Option/SetunaOption.cs

@@ -49,6 +49,7 @@ public static SetunaOption GetDefaultOption()
             setunaOption.Setuna.FullscreenCursorColorR = Color.Orange.R;
             setunaOption.Setuna.FullscreenCursorColorG = Color.Orange.G;
             setunaOption.Setuna.FullscreenCursorColorB = Color.Orange.B;
+            setunaOption.Setuna.BackgroundTransparentEnabled = false;
 
 
             var cstyle = new CStyle
@@ -1036,6 +1037,8 @@ public SetunaOptionData()
                 FullscreenCursorColorR = Color.Orange.R;
                 FullscreenCursorColorG = Color.Orange.G;
                 FullscreenCursorColorB = Color.Orange.B;
+
+                BackgroundTransparentEnabled = false;
             }
 
             // Token: 0x17000072 RID: 114
@@ -1120,6 +1123,8 @@ public SetunaOptionData()
 
             public bool MagnifierEnabled;
 
+            public bool BackgroundTransparentEnabled;
+
             public Color FullscreenCursorLineColor => Color.FromArgb(FullscreenCursorColorR, FullscreenCursorColorG, FullscreenCursorColorB);
             public bool FullscreenCursorSolid;
             public byte FullscreenCursorColorR;

SETUNA/Main/ScrapBase.cs

@@ -460,7 +460,21 @@ protected override void OnPaint(PaintEventArgs e)
             var all = Padding.All;
             e.Graphics.InterpolationMode = _interpolationmode;
             //e.Graphics.DrawImage(imgView, all, all, width, height);
-            e.Graphics.DrawImage(imgView, all, all, Width - all * 2, Height - all * 2);
+
+            if (Mainform.Instance.optSetuna.Setuna.BackgroundTransparentEnabled)
+            {
+                e.Graphics.Clear(Color.Green);
+                TransparencyKey = Color.Green;
+
+                e.Graphics.DrawImage(imgView, all, all, Width - all * 2, Height - all * 2);
+            }
+            else
+            {
+                e.Graphics.Clear(Color.White);
+
+                e.Graphics.DrawImage(imgView, all, all, Width, Height);
+            }
+
             if (!_solidframe)
             {
                 var pen = new Pen(Color.FromArgb(243, 243, 243));

SETUNA/Main/StyleItems/CImageStyleItem.cs

@@ -9,6 +9,8 @@ namespace SETUNA.Main.StyleItems
     // Token: 0x0200000E RID: 14
     public abstract class CImageStyleItem : CStyleItem
     {
+        static PixelFormat[] indexedPixelFormats = { PixelFormat.Undefined, PixelFormat.DontCare, PixelFormat.Format16bppArgb1555, PixelFormat.Format1bppIndexed, PixelFormat.Format4bppIndexed, PixelFormat.Format8bppIndexed };
+
         // Token: 0x060000C6 RID: 198 RVA: 0x00005711 File Offset: 0x00003911
         public CImageStyleItem()
         {
@@ -22,16 +24,27 @@ public CImageStyleItem()
         public override void Apply(ref ScrapBase scrap, Point clickpoint)
         {
             Bitmap bitmap = null;
+            Graphics graphics = null;
             var text = "";
             try
             {
                 if (HaveMargin)
                 {
-                    bitmap = ((Bitmap)scrap.GetViewImage()).Clone(new Rectangle(0, 0, scrap.Width, scrap.Height), PixelFormat.Format24bppRgb);
+                    bitmap = new Bitmap(scrap.Width, scrap.Height, PixelFormat.Format24bppRgb);
+                    graphics = Graphics.FromImage(bitmap);
+                    graphics.DrawImage(scrap.GetViewImage(), 0, 0, scrap.Width, scrap.Height);
                 }
                 else
                 {
-                    bitmap = ((Bitmap)scrap.Image).Clone(new Rectangle(0, 0, scrap.Image.Width, scrap.Image.Height), scrap.Image.PixelFormat);
+                    var pixelFormat = scrap.Image.PixelFormat;
+                    if (Array.IndexOf(indexedPixelFormats, pixelFormat) != -1)
+                    {
+                        pixelFormat = PixelFormat.Format24bppRgb;
+                    }
+
+                    bitmap = new Bitmap(scrap.Image.Width, scrap.Image.Height, pixelFormat);
+                    graphics = Graphics.FromImage(bitmap);
+                    graphics.DrawImage(scrap.Image, 0, 0, scrap.Image.Width, scrap.Image.Height);
                 }
                 var encoderParams = GetEncoderParams(ref scrap);
                 if (encoderParams != null)
@@ -76,6 +89,11 @@ public override void Apply(ref ScrapBase scrap, Point clickpoint)
             }
             finally
             {
+                if (graphics != null)
+                {
+                    graphics.Dispose();
+                }
+
                 if (bitmap != null)
                 {
                     bitmap.Dispose();

SETUNA/Main/StyleItems/CompactScrap.cs

@@ -84,6 +84,9 @@ private void CompactScrap_DoubleClick(object sender, EventArgs e)
         // Token: 0x0600040B RID: 1035 RVA: 0x0001A014 File Offset: 0x00018214
         protected override void OnPaint(PaintEventArgs e)
         {
+            e.Graphics.Clear(Color.Green);
+            TransparencyKey = Color.Green;
+
             e.Graphics.DrawImageUnscaled(_thumbnail, new Point(-_clickpoint.X + base.Width / 2, -_clickpoint.Y + base.Height / 2));
             e.Graphics.DrawRectangle(Pens.White, new Rectangle(0, 0, base.Width - 1, base.Height - 1));
             e.Graphics.DrawRectangle(_pen, new Rectangle(0, 0, base.Width - 1, base.Height - 1));