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win32u: Handle invisible winstations in lock_display_devices.

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Signed-off-by: Jacek Caban <jacek@codeweavers.com>
Signed-off-by: Huw Davies <huw@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Jacek Caban 2021-12-02 01:14:04 +01:00 committed by Alexandre Julliard
parent 318673405c
commit c4b258eff7
1 changed files with 80 additions and 59 deletions
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139
dlls/win32u/sysparams.c
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@ -224,6 +224,17 @@ static struct list monitors = LIST_INIT(monitors);
static INT64 last_query_display_time;
static pthread_mutex_t display_lock = PTHREAD_MUTEX_INITIALIZER;
static struct monitor virtual_monitor =
{
.handle = NULLDRV_DEFAULT_HMONITOR,
.flags = MONITORINFOF_PRIMARY,
.rc_monitor.right = 1024,
.rc_monitor.bottom = 768,
.rc_work.right = 1024,
.rc_work.bottom = 768,
.dev.state_flags = DISPLAY_DEVICE_ACTIVE | DISPLAY_DEVICE_ATTACHED,
};
static HANDLE get_display_device_init_mutex( void )
{
static const WCHAR display_device_initW[] =
@ -1045,6 +1056,32 @@ static void release_display_manager_ctx( struct device_manager_ctx *ctx )
if (ctx->gpu_count) cleanup_devices();
}
static void clear_display_devices(void)
{
struct adapter *adapter;
struct monitor *monitor;
if (list_head( &monitors ) == &virtual_monitor.entry)
{
list_init( &monitors );
return;
}
while (!list_empty( &monitors ))
{
monitor = LIST_ENTRY( list_head( &monitors ), struct monitor, entry );
list_remove( &monitor->entry );
free( monitor );
}
while (!list_empty( &adapters ))
{
adapter = LIST_ENTRY( list_head( &adapters ), struct adapter, entry );
list_remove( &adapter->entry );
free( adapter );
}
}
static BOOL update_display_cache_from_registry(void)
{
DWORD adapter_id, monitor_id, monitor_count = 0, size;
@ -1069,19 +1106,7 @@ static BOOL update_display_cache_from_registry(void)
mutex = get_display_device_init_mutex();
pthread_mutex_lock( &display_lock );
while (!list_empty( &monitors ))
{
monitor = LIST_ENTRY( list_head( &monitors ), struct monitor, entry );
list_remove( &monitor->entry );
free( monitor );
}
while (!list_empty( &adapters ))
{
adapter = LIST_ENTRY( list_head( &adapters ), struct adapter, entry );
list_remove( &adapter->entry );
free( adapter );
}
clear_display_devices();
for (adapter_id = 0;; adapter_id++)
{
@ -1161,8 +1186,27 @@ static BOOL update_display_cache(void)
static BOOL lock_display_devices(void)
{
if (!update_display_cache()) return FALSE;
USEROBJECTFLAGS flags;
HWINSTA winstation;
pthread_mutex_lock( &display_lock );
/* Report physical monitor information only if window station has visible display surfaces */
winstation = NtUserGetProcessWindowStation();
if (NtUserGetObjectInformation( winstation, UOI_FLAGS, &flags, sizeof(flags), NULL ) &&
(flags.dwFlags & WSF_VISIBLE))
{
pthread_mutex_unlock( &display_lock );
if (!update_display_cache()) return FALSE;
pthread_mutex_lock( &display_lock );
}
else
{
clear_display_devices();
list_add_tail( &monitors, &virtual_monitor.entry );
last_query_display_time = 0;
}
return TRUE;
}
@ -1334,46 +1378,30 @@ BOOL WINAPI NtUserEnumDisplayMonitors( HDC hdc, RECT *rect, MONITORENUMPROC proc
struct monitor_enum_info enum_buf[8], *enum_info = enum_buf;
struct enum_display_monitor_params params;
struct monitor *monitor;
ULONG count = 0, i;
USEROBJECTFLAGS flags;
HWINSTA winstation;
unsigned int count = 0, i;
BOOL ret = TRUE;
/* Report physical monitor information only if window station has visible display surfaces */
winstation = NtUserGetProcessWindowStation();
if (NtUserGetObjectInformation( winstation, UOI_FLAGS, &flags, sizeof(flags), NULL ) &&
(flags.dwFlags & WSF_VISIBLE))
if (!lock_display_devices()) return FALSE;
count = list_count( &monitors );
if (!count || (count > ARRAYSIZE(enum_buf) &&
!(enum_info = malloc( count * sizeof(*enum_info) ))))
{
if (!lock_display_devices()) return FALSE;
count = list_count( &monitors );
if (!count || (count > ARRAYSIZE(enum_buf) &&
!(enum_info = malloc( count * sizeof(*enum_info) ))))
{
unlock_display_devices();
return FALSE;
}
count = 0;
LIST_FOR_EACH_ENTRY(monitor, &monitors, struct monitor, entry)
{
if (!(monitor->dev.state_flags & DISPLAY_DEVICE_ACTIVE)) continue;
enum_info[count].handle = monitor->handle;
enum_info[count].rect = monitor->rc_monitor;
count++;
}
unlock_display_devices();
if (!count) return FALSE;
return FALSE;
}
else
count = 0;
LIST_FOR_EACH_ENTRY(monitor, &monitors, struct monitor, entry)
{
if (!(enum_info = malloc( sizeof(*enum_info) ))) return FALSE;
enum_info->handle = NULLDRV_DEFAULT_HMONITOR;
SetRect( &enum_info->rect, 0, 0, 1024, 768 );
count = 1;
if (!(monitor->dev.state_flags & DISPLAY_DEVICE_ACTIVE)) continue;
enum_info[count].handle = monitor->handle;
enum_info[count].rect = monitor->rc_monitor;
count++;
}
unlock_display_devices();
params.proc = proc;
params.hdc = hdc;
params.lparam = lparam;
@ -1397,18 +1425,6 @@ static BOOL get_monitor_info( HMONITOR handle, MONITORINFO *info )
if (info->cbSize != sizeof(MONITORINFOEXW) && info->cbSize != sizeof(MONITORINFO)) return FALSE;
/* Fallback to report one monitor */
if (handle == NULLDRV_DEFAULT_HMONITOR)
{
RECT default_rect = {0, 0, 1024, 768};
info->rcMonitor = default_rect;
info->rcWork = default_rect;
info->dwFlags = MONITORINFOF_PRIMARY;
if (info->cbSize >= sizeof(MONITORINFOEXW))
asciiz_to_unicode( ((MONITORINFOEXW *)info)->szDevice, "WinDisc" );
return TRUE;
}
if (!lock_display_devices()) return FALSE;
LIST_FOR_EACH_ENTRY( monitor, &monitors, struct monitor, entry )
@ -1421,7 +1437,12 @@ static BOOL get_monitor_info( HMONITOR handle, MONITORINFO *info )
info->rcWork = monitor->rc_work;
info->dwFlags = monitor->flags;
if (info->cbSize >= sizeof(MONITORINFOEXW))
lstrcpyW( ((MONITORINFOEXW *)info)->szDevice, monitor->adapter->dev.device_name );
{
if (monitor->adapter)
lstrcpyW( ((MONITORINFOEXW *)info)->szDevice, monitor->adapter->dev.device_name );
else
asciiz_to_unicode( ((MONITORINFOEXW *)info)->szDevice, "WinDisc" );
}
unlock_display_devices();
return TRUE;
}