tastudio: screenshot control tweaks.

- don't cut it on the left if tasview is narrow, push it right instead
- don't hide it instantly if it spawns right under the mouse cursor, hide it if mouse leaves *it*, not branch control
- keep consistent Y position

BizHawk.Client.EmuHawk/tools/TAStudio/BookmarksBranchesBox.cs

@@ -277,7 +277,7 @@ namespace BizHawk.Client.EmuHawk
 
 		private void BranchView_MouseLeave(object sender, EventArgs e)
 		{
-			Tastudio.ScreenshotControl.Visible = false;
+			// Tastudio.ScreenshotControl.Visible = false;
 		}
 
 		private void ScreenShotPopUp(TasBranch branch, int index)
@@ -286,7 +286,9 @@ namespace BizHawk.Client.EmuHawk
 				this.Parent.PointToScreen(this.Location));
 
 			int x = locationOnForm.X - Tastudio.ScreenshotControl.Width;
-			int y = locationOnForm.Y + (BranchView.RowHeight * index);
+			int y = locationOnForm.Y; // keep consistent height, helps when conparing screenshots
+
+			if (x < 0) x = 0;
 
 			Tastudio.ScreenshotControl.Location = new Point(x, y);
 

BizHawk.Client.EmuHawk/tools/TAStudio/ScreenshotPopupControl.Designer.cs

@@ -38,7 +38,8 @@
 			this.Size = new System.Drawing.Size(237, 255);
 			this.Load += new System.EventHandler(this.ScreenshotPopupControl_Load);
 			this.ResumeLayout(false);
-
+			this.MouseLeave += new System.EventHandler(ScreenshotPopupControl_MouseLeave);
+			this.MouseHover += new System.EventHandler(ScreenshotPopupControl_MouseHover);
 		}
 
 		#endregion

BizHawk.Client.EmuHawk/tools/TAStudio/ScreenshotPopupControl.cs

@@ -31,5 +31,15 @@ namespace BizHawk.Client.EmuHawk
 			e.Graphics.DrawImage(bitmap, new Rectangle(0, 0, Width, Height));
 			base.OnPaint(e);
 		}
+
+		private void ScreenshotPopupControl_MouseLeave(object sender, EventArgs e)
+		{
+			Visible = false;
+		}
+
+		private void ScreenshotPopupControl_MouseHover(object sender, EventArgs e)
+		{
+			// todo: switch screenshots by hotkey
+		}
 	}
 }