pause video when screen locked #375

Scighost · Dec 3, 2023 · af116cc · af116cc
1 parent abb4ec0
commit af116cc
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Showing 2 changed files with 37 additions and 4 deletions.
diff --git a/src/Starward/MainWindow.xaml.cs b/src/Starward/MainWindow.xaml.cs
@@ -11,6 +11,7 @@
 using Starward.Pages.Welcome;
 using System;
 using System.IO;
+using System.Runtime.InteropServices;
 using Vanara.PInvoke;
 using Windows.Graphics;
 using Windows.UI;
@@ -64,6 +65,8 @@ private void InitializeWindowSubclass()
         WTSRegisterSessionNotification(MainWindow.Current.HWND, 0);
     }
 
+
+
     private void InitializeMainWindow(string? action = null)
     {
         HWND = WindowNative.GetWindowHandle(this);
@@ -298,8 +301,25 @@ public void ChangeAccentColor(Color? backColor = null, Color? foreColor = null)
 
 
 
+    [DllImport("Wtsapi32.dll")]
+    private static extern bool WTSRegisterSessionNotification(IntPtr hWnd, int dwFlags);
+
+
     public IntPtr SUBCLASSPROC(HWND hWnd, uint uMsg, IntPtr wParam, IntPtr lParam, nuint uIdSubclass, IntPtr dwRefData)
     {
+        if (uMsg == ((uint)User32.WindowMessage.WM_WTSSESSION_CHANGE))
+        {
+            // WTS_SESSION_LOCK
+            if (wParam == 0x7)
+            {
+                MainPage.Current?.PauseVideo(true);
+            }
+            // WTS_SESSION_UNLOCK 
+            if (wParam == 0x8)
+            {
+                MainPage.Current?.PlayVideo(true);
+            }
+        }
         if (uMsg == ((uint)User32.WindowMessage.WM_SYSCOMMAND))
         {
             // SC_MAXIMIZE

diff --git a/src/Starward/Pages/MainPage.xaml.cs b/src/Starward/Pages/MainPage.xaml.cs
@@ -497,7 +497,7 @@ partial void OnVideoBgVolumeChanged(int value)
 
     public bool IsPlayingVideo { get; private set; }
 
-
+   
 
     private void InitializeBackgroundImage()
     {
@@ -699,15 +699,28 @@ private void MediaPlayer_VideoFrameAvailable(MediaPlayer sender, object args)
     }
 
 
+    private bool pausedBySessionLocked;
+
 
-    public void PlayVideo()
+    public void PlayVideo(bool sessionUnlock = false)
     {
-        mediaPlayer?.Play();
+        if (!sessionUnlock)
+        {
+            mediaPlayer?.Play();
+        }
+        if (sessionUnlock && pausedBySessionLocked)
+        {
+            mediaPlayer?.Play();
+        }
     }
 
 
-    public void PauseVideo()
+    public void PauseVideo(bool sessionLock = false)
     {
+        if (mediaPlayer?.PlaybackSession?.PlaybackState is MediaPlaybackState.Playing)
+        {
+            pausedBySessionLocked = sessionLock;
+        }
         mediaPlayer?.Pause();
     }