シングルクリックでサムネイルを開く

Author: kzrnm

OpenTween/OpenTween.csproj

@@ -198,6 +198,12 @@
       <DependentUpon>TweetDetailsView.cs</DependentUpon>
     </Compile>
     <Compile Include="TweetExtractor.cs" />
+    <Compile Include="TweetThumbnailWindow.cs">
+      <SubType>Form</SubType>
+    </Compile>
+    <Compile Include="TweetThumbnailWindow.Designer.cs">
+      <DependentUpon>TweetThumbnailWindow.cs</DependentUpon>
+    </Compile>
     <Compile Include="WaitingDialog.cs">
       <SubType>Form</SubType>
     </Compile>

OpenTween/TweetThumbnail.cs

@@ -50,6 +50,11 @@ public partial class TweetThumbnail : UserControl
         public event EventHandler<ThumbnailDoubleClickEventArgs>? ThumbnailDoubleClick;
         public event EventHandler<ThumbnailImageSearchEventArgs>? ThumbnailImageSearchClick;
 
+        private TweetThumbnailWindow? _thumbWindow;
+        private TweetThumbnailWindow ThumbnailWindow
+            => _thumbWindow ??= CreateTweetThumbnailWindow();
+
+
         public ThumbnailInfo Thumbnail
             => (ThumbnailInfo)this.pictureBox[this.scrollBar.Value].Tag;
 
@@ -142,6 +147,7 @@ protected void SetThumbnailCount(int count)
 
                     picbox.MouseWheel -= this.pictureBox_MouseWheel;
                     picbox.DoubleClick -= this.pictureBox_DoubleClick;
+                    picbox.MouseClick -= this.pictureBox_MouseClick;
                     picbox.Dispose();
 
                     memoryImage?.Dispose();
@@ -160,6 +166,7 @@ protected void SetThumbnailCount(int count)
                     picbox.Visible = (i == 0);
                     picbox.MouseWheel += this.pictureBox_MouseWheel;
                     picbox.DoubleClick += this.pictureBox_DoubleClick;
+                    picbox.MouseClick += this.pictureBox_MouseClick;
 
                     filter.Register(picbox);
 
@@ -231,6 +238,36 @@ private void pictureBox_MouseWheel(object sender, MouseEventArgs e)
                 this.ScrollDown();
         }
 
+        private void pictureBox_MouseClick(object sender, MouseEventArgs e)
+        {
+            var picBox = sender as PictureBox;
+            if (picBox == null) return;
+
+            var thumb = picBox.Tag as ThumbnailInfo;
+            if (thumb == null || thumb.IsPlayable) return;
+
+            this.ShowThubWindow(picBox.Image, thumb);
+        }
+
+        private void ShowThubWindow(Image image, ThumbnailInfo thumbnailInfo)
+        {
+            var thumbWindow = this.ThumbnailWindow;
+            if (thumbWindow.Image == image)
+            {
+                ThumbnailWindow.HideAndClear();
+                return;
+            }
+
+            thumbWindow.Image = image;
+            thumbWindow.Show();
+        }
+        private TweetThumbnailWindow CreateTweetThumbnailWindow()
+        {
+            var window = new TweetThumbnailWindow(this.ParentForm);
+            this.components.Add(window);
+            return window;
+        }
+
         private void pictureBox_DoubleClick(object sender, EventArgs e)
         {
             if (((PictureBox)sender).Tag is ThumbnailInfo thumb)

OpenTween/TweetThumbnailWindow.Designer.cs

@@ -0,0 +1,64 @@
+using System;
+using System.Drawing;
+using System.Windows.Forms;
+#nullable enable
+namespace OpenTween
+{
+    public partial class TweetThumbnailWindow : Form
+    {
+        private Point mouseDownPoint;
+        private bool _moved;
+
+        public Image? Image
+        {
+            set => pictureBox1.Image = value;
+            get => pictureBox1.Image;
+        }
+
+        public TweetThumbnailWindow(Form tweenMain)
+        {
+            InitializeComponent();
+            tweenMain.Activated += TweenMain_Activated;
+        }
+
+        public void HideAndClear()
+        {
+            this.Hide();
+            Image = null;
+        }
+
+        private void TweetThumbnailWindow_KeyPress(object sender, KeyPressEventArgs e)
+        {
+            this.HideAndClear();
+        }
+
+        private void TweenMain_Activated(object sender, EventArgs e)
+        {
+            /// <see cref="TweetThumbnail.ShowThubWindow(Image, ThumbnailInfo)"/> で確認できるように Image を残しておく
+            this.Hide();
+        }
+
+        private void pictureBox1_Click(object sender, EventArgs e)
+        {
+            if (!_moved) this.HideAndClear();
+        }
+
+        private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
+        {
+            if (e.Button.HasFlag(MouseButtons.Left))
+            {
+                _moved = false;
+                mouseDownPoint = e.Location;
+            }
+        }
+
+        private void pictureBox1_MouseMove(object sender, MouseEventArgs e)
+        {
+            if (e.Button.HasFlag(MouseButtons.Left))
+            {
+                _moved = true;
+                this.Location = new Point(this.Location.X + e.X - mouseDownPoint.X, this.Location.Y + e.Y - mouseDownPoint.Y);
+            }
+        }
+    }
+}