session-lock: send `locked` after the lock screen is properly rendered (#6850)

The protocol says:
> The locked event "must not be sent until a new "locked" frame (either from a
> session lock surface or the compositor blanking the output) has been presented
> on all outputs and no security sensitive normal/unlocked content is possibly
> visible".

This helps users ensure the screen is properly locked before suspending
the machine. (e.g. with swaylock --ready-fd)

1 files changed, 7 insertions, 1 deletions

diff --git a/src/managers/SessionLockManager.hpp b/src/managers/SessionLockManager.hpp
index fe4a4434..b01ee288 100644
--- a/src/managers/SessionLockManager.hpp
+++ b/src/managers/SessionLockManager.hpp
@@ -5,6 +5,7 @@
 #include "../helpers/signal/Signal.hpp"
 #include <cstdint>
 #include <unordered_map>
+#include <unordered_set>
 
 class CSessionLockSurface;
 class CSessionLock;
@@ -37,6 +38,9 @@ struct SSessionLock {
         CHyprSignalListener unlock;
         CHyprSignalListener destroy;
     } listeners;
+
+    bool                         m_hasSentLocked = false;
+    std::unordered_set<uint64_t> m_lockedMonitors;
 };
 
 class CSessionLockManager {
@@ -54,6 +58,8 @@ class CSessionLockManager {
 
     void                 removeSessionLockSurface(SSessionLockSurface*);
 
+    void                 onLockscreenRenderedOnMonitor(uint64_t id);
+
   private:
     UP<SSessionLock> m_pSessionLock;
 
@@ -64,4 +70,4 @@ class CSessionLockManager {
     void onNewSessionLock(SP<CSessionLock> pWlrLock);
 };
 
-inline std::unique_ptr<CSessionLockManager> g_pSessionLockManager;
\ No newline at end of file
+inline std::unique_ptr<CSessionLockManager> g_pSessionLockManager;