Fix various focus issues with video player and fix double-clicking control panel

Core/FormBrowser.cs

@@ -405,7 +405,6 @@ protected override void WndProc(ref Message m){
             if (isBrowserReady && m.Msg == NativeMethods.WM_PARENTNOTIFY && (m.WParam.ToInt32() & 0xFFFF) == NativeMethods.WM_XBUTTONDOWN){
                 if (videoPlayer != null && videoPlayer.Running){
                     videoPlayer.Close();
-                    HideVideoOverlay();
                 }
                 else{
                     browser.ExecuteScriptAsync("TDGF_onMouseClickExtra", (m.WParam.ToInt32() >> 16) & 0xFFFF);
@@ -527,7 +526,11 @@ public void PlayVideo(string url){
 
             if (videoPlayer == null){
                 videoPlayer = new VideoPlayer(this);
-                videoPlayer.ProcessExitedGracelessly += (sender, args) => HideVideoOverlay();
+
+                videoPlayer.ProcessExited += (sender, args) => {
+                    browser.GetBrowser().GetHost().SendFocusEvent(true);
+                    HideVideoOverlay();
+                };
             }
             
             videoPlayer.Launch(url);

Core/Other/Management/VideoPlayer.cs

@@ -2,6 +2,7 @@
 using System.Diagnostics;
 using System.IO;
 using System.Windows.Forms;
+using TweetDuck.Core.Controls;
 using TweetDuck.Core.Utils;
 
 namespace TweetDuck.Core.Other.Management{
@@ -19,7 +20,7 @@ public bool Running{
             }
         }
 
-        public event EventHandler ProcessExitedGracelessly;
+        public event EventHandler ProcessExited;
 
         private readonly Form owner;
         private Process currentProcess;
@@ -27,6 +28,7 @@ public bool Running{
 
         public VideoPlayer(Form owner){
             this.owner = owner;
+            this.owner.FormClosing += owner_FormClosing;
         }
 
         public void Launch(string url){
@@ -66,6 +68,14 @@ public void Close(){
 
                 currentProcess.Dispose();
                 currentProcess = null;
+
+                owner.InvokeAsyncSafe(TriggerProcessExitEventUnsafe);
+            }
+        }
+
+        private void owner_FormClosing(object sender, FormClosingEventArgs e){
+            if (currentProcess != null){
+                currentProcess.Exited -= process_Exited;
             }
         }
 
@@ -86,12 +96,14 @@ private void process_Exited(object sender, EventArgs e){
                     break;
             }
 
-            if (currentProcess.ExitCode != 0){
-                ProcessExitedGracelessly?.Invoke(this, new EventArgs());
-            }
-
             currentProcess.Dispose();
             currentProcess = null;
+            
+            owner.InvokeAsyncSafe(TriggerProcessExitEventUnsafe);
+        }
+
+        private void TriggerProcessExitEventUnsafe(){
+            ProcessExited?.Invoke(this, new EventArgs());
         }
     }
 }

video/TweetDuck.Video/FormPlayer.cs

@@ -6,10 +6,13 @@
 
 namespace TweetDuck.Video{
     partial class FormPlayer : Form{
+        protected override bool ShowWithoutActivation => true;
+
         private readonly IntPtr ownerHandle;
         private readonly string videoUrl;
         
         private readonly ControlWMP player;
+        private bool wasCursorInside;
         private bool isPaused;
         private bool isDragging;
 
@@ -67,10 +70,12 @@ private void timerSync_Tick(object sender, EventArgs e){
                 int height = rect.Bottom-rect.Top+1;
                 IWMPMedia media = Player.currentMedia;
 
+                bool isCursorInside = ClientRectangle.Contains(PointToClient(Cursor.Position));
+
                 ClientSize = new Size(Math.Min(media.imageSourceWidth, width*3/4), Math.Min(media.imageSourceHeight, height*3/4));
                 Location = new Point(rect.Left+(width-ClientSize.Width)/2, rect.Top+(height-ClientSize.Height+SystemInformation.CaptionHeight)/2);
 
-                tablePanel.Visible = ClientRectangle.Contains(PointToClient(Cursor.Position)) || isDragging;
+                tablePanel.Visible = isCursorInside || isDragging;
 
                 if (tablePanel.Visible){
                     labelTime.Text = $"{Player.controls.currentPositionString} / {Player.currentMedia.durationString}";
@@ -93,6 +98,17 @@ private void timerSync_Tick(object sender, EventArgs e){
                     Player.controls.currentPosition = 0;
                     Player.controls.play();
                 }
+                
+                if (isCursorInside && !wasCursorInside){
+                    wasCursorInside = true;
+                }
+                else if (!isCursorInside && wasCursorInside){
+                    wasCursorInside = false;
+
+                    if (!Player.fullScreen){
+                        NativeMethods.SetForegroundWindow(ownerHandle);
+                    }
+                }
             }
             else{
                 Environment.Exit(Program.CODE_OWNER_GONE);
@@ -143,23 +159,33 @@ private void TogglePause(){
         internal class MessageFilter : IMessageFilter{
             private readonly FormPlayer form;
 
+            private bool IsCursorOverVideo{
+                get{
+                    Point cursor = form.PointToClient(Cursor.Position);
+                    return cursor.Y < form.tablePanel.Location.Y;
+                }
+            }
+
             public MessageFilter(FormPlayer form){
                 this.form = form;
             }
 
             bool IMessageFilter.PreFilterMessage(ref Message m){
                 if (m.Msg == 0x0201){ // WM_LBUTTONDOWN
-                    Point cursor = form.PointToClient(Cursor.Position);
-
-                    if (cursor.Y < form.tablePanel.Location.Y){
+                    if (IsCursorOverVideo){
                         form.TogglePause();
                         return true;
                     }
                 }
                 else if (m.Msg == 0x0203 || (m.Msg == 0x0100 && m.WParam.ToInt32() == 0x20)){ // WM_LBUTTONDBLCLK, WM_KEYDOWN, VK_SPACE
-                    form.TogglePause();
+                    if (IsCursorOverVideo){
+                        form.TogglePause();
+                        form.Player.fullScreen = !form.Player.fullScreen;
+                        return true;
+                    }
                 }
                 else if (m.Msg == 0x020B && ((m.WParam.ToInt32() >> 16) & 0xFFFF) == 1){ // WM_XBUTTONDOWN
+                    NativeMethods.SetForegroundWindow(form.ownerHandle);
                     Environment.Exit(Program.CODE_USER_REQUESTED);
                 }
 

video/TweetDuck.Video/NativeMethods.cs

@@ -20,6 +20,9 @@ static class NativeMethods{
         [DllImport("user32.dll")]
         private static extern int SetWindowLong(IntPtr hWnd, int nIndex, IntPtr dwNewLong);
 
+        [DllImport("user32.dll")]
+        public static extern bool SetForegroundWindow(IntPtr hWnd);
+
         [StructLayout(LayoutKind.Sequential)]
         public struct RECT{
             public int Left;