[PATCH 2/2] winex11.drv: Support _NET_WM_FULLSCREEN_MONITORS. - wine-devel

23 Feb 2022

Support _NET_WM_FULLSCREEN_MONITORS for fullscreen windows spanning multiple monitors. This property
is used to hint the window managers which monitors a fullscreen window should cover. Window managers
make a fullscreen window spanning multiple monitors cover only the primary monitor when this
property is absent.
Fix Project Cars 2/3 incorrect game window size when the triple-screen mode is on.
Signed-off-by: Zhiyi Zhang zzhang@codeweavers.com
---
 dlls/user32/tests/win.c        |  1 -
 dlls/winex11.drv/window.c      | 38 ++++++++++++++++
 dlls/winex11.drv/x11drv.h      |  2 +
 dlls/winex11.drv/x11drv_main.c |  1 +
 dlls/winex11.drv/xinerama.c    | 81 ++++++++++++++++++++++++++++++++++
 dlls/winex11.drv/xrandr.c      |  5 +++
 6 files changed, 127 insertions(+), 1 deletion(-)

diff --git a/dlls/user32/tests/win.c b/dlls/user32/tests/win.c
index 63c18cd9948..da2ab5beb0e 100644
--- a/dlls/user32/tests/win.c
+++ b/dlls/user32/tests/win.c
@@ -9295,7 +9295,6 @@ static void test_fullscreen(void)
         flush_events(TRUE);
GetWindowRect(hwnd, &rc);
-        todo_wine
         ok(EqualRect(&rc, &virtual_rect), "Expected %s, got %s.\n",
            wine_dbgstr_rect(&virtual_rect), wine_dbgstr_rect(&rc));
         DestroyWindow(hwnd);
diff --git a/dlls/winex11.drv/window.c b/dlls/winex11.drv/window.c
index 36fb41ac710..b6b3507e88f 100644
--- a/dlls/winex11.drv/window.c
+++ b/dlls/winex11.drv/window.c
@@ -965,6 +965,42 @@ void update_user_time( Time time )
     XUnlockDisplay( gdi_display );
 }
+/* Update _NET_WM_FULLSCREEN_MONITORS when _NET_WM_STATE_FULLSCREEN is set to support fullscreen
+ * windows spanning multiple monitors */
+static void update_net_wm_fullscreen_monitors( struct x11drv_win_data *data )
+{
+    long monitors[4] = {0};
+    XEvent xev;
+
+    if (!(data->net_wm_state & (1 << NET_WM_STATE_FULLSCREEN)) || is_virtual_desktop())
+        return;
+
+    /* No need to set _NET_WM_FULLSCREEN_MONITORS when it covers only the primary monitor */
+    xinerama_get_fullscreen_monitors( &data->whole_rect, monitors );
+    if (monitors[0] == 0 && monitors[1] == 0 && monitors[2] == 0 && monitors[3] == 0)
+        return;
+
+    if (!data->mapped)
+    {
+        XChangeProperty( data->display, data->whole_window, x11drv_atom(_NET_WM_FULLSCREEN_MONITORS),
+                         XA_CARDINAL, 32, PropModeReplace, (unsigned char *)monitors, 4 );
+    }
+    else
+    {
+        xev.xclient.type = ClientMessage;
+        xev.xclient.window = data->whole_window;
+        xev.xclient.message_type = x11drv_atom(_NET_WM_FULLSCREEN_MONITORS);
+        xev.xclient.serial = 0;
+        xev.xclient.display = data->display;
+        xev.xclient.send_event = True;
+        xev.xclient.format = 32;
+        xev.xclient.data.l[4] = 1;
+        memcpy( xev.xclient.data.l, monitors, sizeof(monitors) );
+        XSendEvent( data->display, root_window, False,
+                    SubstructureRedirectMask | SubstructureNotifyMask, &xev );
+    }
+}
+
 /***********************************************************************
  *     update_net_wm_states
  */
@@ -1045,6 +1081,7 @@ void update_net_wm_states( struct x11drv_win_data *data )
         }
     }
     data->net_wm_state = new_state;
+    update_net_wm_fullscreen_monitors( data );
 }
/***********************************************************************
@@ -1137,6 +1174,7 @@ static void map_window( HWND hwnd, DWORD new_style )
data->mapped = TRUE;
         data->iconic = (new_style & WS_MINIMIZE) != 0;
+        update_net_wm_fullscreen_monitors( data );
     }
     release_win_data( data );
 }
diff --git a/dlls/winex11.drv/x11drv.h b/dlls/winex11.drv/x11drv.h
index f389f3e0836..363435a2cf6 100644
--- a/dlls/winex11.drv/x11drv.h
+++ b/dlls/winex11.drv/x11drv.h
@@ -490,6 +490,7 @@ enum x11drv_atoms
     XATOM__NET_SYSTEM_TRAY_OPCODE,
     XATOM__NET_SYSTEM_TRAY_S0,
     XATOM__NET_SYSTEM_TRAY_VISUAL,
+    XATOM__NET_WM_FULLSCREEN_MONITORS,
     XATOM__NET_WM_ICON,
     XATOM__NET_WM_MOVERESIZE,
     XATOM__NET_WM_NAME,
@@ -704,6 +705,7 @@ extern RECT get_virtual_screen_rect(void) DECLSPEC_HIDDEN;
 extern RECT get_primary_monitor_rect(void) DECLSPEC_HIDDEN;
 extern RECT get_host_primary_monitor_rect(void) DECLSPEC_HIDDEN;
 extern RECT get_work_area( const RECT *monitor_rect ) DECLSPEC_HIDDEN;
+extern void xinerama_get_fullscreen_monitors( const RECT *rect, long *indices ) DECLSPEC_HIDDEN;
 extern void xinerama_init( unsigned int width, unsigned int height ) DECLSPEC_HIDDEN;
#define DEPTH_COUNT 3
diff --git a/dlls/winex11.drv/x11drv_main.c b/dlls/winex11.drv/x11drv_main.c
index 32beb84a009..7896afcb780 100644
--- a/dlls/winex11.drv/x11drv_main.c
+++ b/dlls/winex11.drv/x11drv_main.c
@@ -162,6 +162,7 @@ static const char * const atom_names[NB_XATOMS - FIRST_XATOM] =
     "_NET_SYSTEM_TRAY_OPCODE",
     "_NET_SYSTEM_TRAY_S0",
     "_NET_SYSTEM_TRAY_VISUAL",
+    "_NET_WM_FULLSCREEN_MONITORS",
     "_NET_WM_ICON",
     "_NET_WM_MOVERESIZE",
     "_NET_WM_NAME",
diff --git a/dlls/winex11.drv/xinerama.c b/dlls/winex11.drv/xinerama.c
index b707574a0ab..568044e4230 100644
--- a/dlls/winex11.drv/xinerama.c
+++ b/dlls/winex11.drv/xinerama.c
@@ -42,6 +42,14 @@ static MONITORINFOEXW default_monitor =
     { '\','\','.','\','D','I','S','P','L','A','Y','1',0 }   /* szDevice */
 };
+static CRITICAL_SECTION xinerama_section;
+static CRITICAL_SECTION_DEBUG xinerama_critsect_debug =
+{
+    0, 0, &xinerama_section,
+    {&xinerama_critsect_debug.ProcessLocksList, &xinerama_critsect_debug.ProcessLocksList},
+     0, 0, {(DWORD_PTR)(__FILE__ ": xinerama_section")}
+};
+static CRITICAL_SECTION xinerama_section = {&xinerama_critsect_debug, -1, 0, 0, 0, 0};
 static MONITORINFOEXW *monitors;
 static int nb_monitors;
@@ -119,6 +127,64 @@ static inline int query_screens(void)
#endif  /* SONAME_LIBXINERAMA */
+/* Get xinerama monitor indices required for _NET_WM_FULLSCREEN_MONITORS */
+void xinerama_get_fullscreen_monitors( const RECT *rect, long *indices )
+{
+    RECT window_rect, intersect_rect, monitor_rect;
+    POINT offset;
+    INT i;
+
+    EnterCriticalSection( &xinerama_section );
+    if (nb_monitors == 1)
+    {
+        memset( indices, 0, sizeof(*indices) * 4 );
+        goto done;
+    }
+
+    /* Convert window rectangle to root coordinates */
+    offset = virtual_screen_to_root( rect->left, rect->top );
+    window_rect.left = offset.x;
+    window_rect.top = offset.y;
+    window_rect.right = window_rect.left + rect->right - rect->left;
+    window_rect.bottom = window_rect.top + rect->bottom - rect->top;
+
+    /* Compare to xinerama monitor rectangles in root coordinates */
+    offset.x = INT_MAX;
+    offset.y = INT_MAX;
+    for (i = 0; i < nb_monitors; ++i)
+    {
+        offset.x = min( offset.x, monitors[i].rcMonitor.left );
+        offset.y = min( offset.y, monitors[i].rcMonitor.top );
+    }
+
+    indices[0] = -1;
+    indices[1] = -1;
+    indices[2] = -1;
+    indices[3] = -1;
+    for (i = 0; i < nb_monitors; ++i)
+    {
+        SetRect( &monitor_rect, monitors[i].rcMonitor.left - offset.x,
+                 monitors[i].rcMonitor.top - offset.y, monitors[i].rcMonitor.right - offset.x,
+                 monitors[i].rcMonitor.bottom - offset.y );
+        IntersectRect( &intersect_rect, &window_rect, &monitor_rect );
+        if (EqualRect( &intersect_rect, &monitor_rect ))
+        {
+            if (indices[0] == -1 || monitors[i].rcMonitor.top < monitors[indices[0]].rcMonitor.top)
+                indices[0] = i;
+            if (indices[1] == -1 || monitors[i].rcMonitor.bottom > monitors[indices[1]].rcMonitor.bottom)
+                indices[1] = i;
+            if (indices[2] == -1 || monitors[i].rcMonitor.left < monitors[indices[2]].rcMonitor.left)
+                indices[2] = i;
+            if (indices[3] == -1 || monitors[i].rcMonitor.right > monitors[indices[3]].rcMonitor.right)
+                indices[3] = i;
+        }
+    }
+
+done:
+    LeaveCriticalSection( &xinerama_section );
+    TRACE( "fullsceen monitors: %ld,%ld,%ld,%ld.\n", indices[0], indices[1], indices[2], indices[3] );
+}
+
 static BOOL xinerama_get_gpus( struct gdi_gpu **new_gpus, int *count )
 {
     static const WCHAR wine_adapterW[] = {'W','i','n','e',' ','A','d','a','p','t','e','r',0};
@@ -154,9 +220,13 @@ static BOOL xinerama_get_adapters( ULONG_PTR gpu_id, struct gdi_adapter **new_ad
         return FALSE;
/* Being lazy, actual adapter count may be less */
+    EnterCriticalSection( &xinerama_section );
     adapters = heap_calloc( nb_monitors, sizeof(*adapters) );
     if (!adapters)
+    {
+        LeaveCriticalSection( &xinerama_section );
         return FALSE;
+    }
primary_index = primary_monitor;
     if (primary_index >= nb_monitors)
@@ -201,6 +271,7 @@ static BOOL xinerama_get_adapters( ULONG_PTR gpu_id, struct gdi_adapter **new_ad
*new_adapters = adapters;
     *count = index;
+    LeaveCriticalSection( &xinerama_section );
     return TRUE;
 }
@@ -220,6 +291,8 @@ static BOOL xinerama_get_monitors( ULONG_PTR adapter_id, struct gdi_monitor **ne
     INT index = 0;
     INT i;
+    EnterCriticalSection( &xinerama_section );
+
     for (i = first; i < nb_monitors; i++)
     {
         if (i == first
@@ -230,7 +303,10 @@ static BOOL xinerama_get_monitors( ULONG_PTR adapter_id, struct gdi_monitor **ne
monitor = heap_calloc( monitor_count, sizeof(*monitor) );
     if (!monitor)
+    {
+        LeaveCriticalSection( &xinerama_section );
         return FALSE;
+    }
for (i = first; i < nb_monitors; i++)
     {
@@ -254,6 +330,7 @@ static BOOL xinerama_get_monitors( ULONG_PTR adapter_id, struct gdi_monitor **ne
*new_monitors = monitor;
     *count = monitor_count;
+    LeaveCriticalSection( &xinerama_section );
     return TRUE;
 }
@@ -272,6 +349,8 @@ void xinerama_init( unsigned int width, unsigned int height )
     if (is_virtual_desktop())
         return;
+    EnterCriticalSection( &xinerama_section );
+
     SetRect( &rect, 0, 0, width, height );
     if (!query_screens())
     {
@@ -295,6 +374,8 @@ void xinerama_init( unsigned int width, unsigned int height )
                (monitors[i].dwFlags & MONITORINFOF_PRIMARY) ? " (primary)" : "" );
     }
+    LeaveCriticalSection( &xinerama_section );
+
     handler.name = "Xinerama";
     handler.priority = 100;
     handler.get_gpus = xinerama_get_gpus;
diff --git a/dlls/winex11.drv/xrandr.c b/dlls/winex11.drv/xrandr.c
index fb7a4405a1e..71b76bda0fb 100644
--- a/dlls/winex11.drv/xrandr.c
+++ b/dlls/winex11.drv/xrandr.c
@@ -1181,6 +1181,8 @@ static void xrandr14_free_monitors( struct gdi_monitor *monitors, int count )
static BOOL xrandr14_device_change_handler( HWND hwnd, XEvent *event )
 {
+    RECT rect;
+
     xrandr14_invalidate_current_mode_cache();
     if (hwnd == GetDesktopWindow() && GetWindowThreadProcessId( hwnd, NULL ) == GetCurrentThreadId())
     {
@@ -1191,6 +1193,9 @@ static BOOL xrandr14_device_change_handler( HWND hwnd, XEvent *event )
init_registry_display_settings();
     }
+    /* Update xinerama monitors for xinerama_get_fullscreen_monitors() */
+    rect = get_host_primary_monitor_rect();
+    xinerama_init( rect.right - rect.left, rect.bottom - rect.top );
     return FALSE;
 }
-- 
2.32.0


    