windows: honor xdg_toplevel_set_fullscreen output hint (#8965)

Co-authored-by: Dardo D Kleiner <dardo.kleiner@nrl.navy.mil>

2 files changed, 11 insertions, 4 deletions

diff --git a/src/protocols/XDGShell.cpp b/src/protocols/XDGShell.cpp
index 282aec47..6b7cb3c1 100644
--- a/src/protocols/XDGShell.cpp
+++ b/src/protocols/XDGShell.cpp
@@ -5,6 +5,7 @@
 #include "../managers/SeatManager.hpp"
 #include "core/Seat.hpp"
 #include "core/Compositor.hpp"
+#include "protocols/core/Output.hpp"
 #include <cstring>
 #include <ranges>
 
@@ -191,9 +192,14 @@ CXDGToplevelResource::CXDGToplevelResource(SP<CXdgToplevel> resource_, SP<CXDGSu
     });
 
     resource->setSetFullscreen([this](CXdgToplevel* r, wl_resource* output) {
+        if (output)
+            if (const auto PM = CWLOutputResource::fromResource(output)->monitor; PM)
+                state.requestsFullscreenMonitor = PM->ID;
+
         state.requestsFullscreen = true;
         events.stateChanged.emit();
         state.requestsFullscreen.reset();
+        state.requestsFullscreenMonitor.reset();
     });
 
     resource->setUnsetFullscreen([this](CXdgToplevel* r) {
@@ -205,7 +211,7 @@ CXDGToplevelResource::CXDGToplevelResource(SP<CXdgToplevel> resource_, SP<CXDGSu
     resource->setSetMinimized([this](CXdgToplevel* r) {
         state.requestsMinimize = true;
         events.stateChanged.emit();
-        state.requestsFullscreen.reset();
+        state.requestsMinimize.reset();
     });
 
     resource->setSetParent([this](CXdgToplevel* r, wl_resource* parentR) {
diff --git a/src/protocols/XDGShell.hpp b/src/protocols/XDGShell.hpp
index ef847f3b..6eef99bb 100644
--- a/src/protocols/XDGShell.hpp
+++ b/src/protocols/XDGShell.hpp
@@ -123,9 +123,10 @@ class CXDGToplevelResource {
         std::string appid;
 
         // volatile state: is reset after the stateChanged signal fires
-        std::optional<bool> requestsMaximize;
-        std::optional<bool> requestsFullscreen;
-        std::optional<bool> requestsMinimize;
+        std::optional<bool>      requestsMaximize;
+        std::optional<bool>      requestsFullscreen;
+        std::optional<MONITORID> requestsFullscreenMonitor;
+        std::optional<bool>      requestsMinimize;
     } state;
 
     struct {