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user32: Make functions use display dc thread-safe. 

Signed-off-by: Guo Lv <lvguo@deepin.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Guo Lv 2018-01-12 13:07:52 +08:00 committed by Alexandre Julliard
parent 82973cfbd1
commit daa832f4bf
1 changed files with 52 additions and 16 deletions
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68
dlls/user32/sysparams.c
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@ -233,6 +233,17 @@ static const WCHAR CSu[] = {'%','u',0};
static const WCHAR CSd[] = {'%','d',0};
static const WCHAR CSrgb[] = {'%','u',' ','%','u',' ','%','u',0};
static HDC display_dc;
static CRITICAL_SECTION display_dc_section;
static CRITICAL_SECTION_DEBUG critsect_debug =
{
0, 0, &display_dc_section,
{ &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
0, 0, { (DWORD_PTR)(__FILE__ ": display_dc_section") }
};
static CRITICAL_SECTION display_dc_section = { &critsect_debug, -1 ,0, 0, 0, 0 };
/* Indicators whether system parameter value is loaded */
static char spi_loaded[SPI_INDEX_COUNT];
@ -604,7 +615,7 @@ static BOOL init_entry_string( struct sysparam_entry *entry, const WCHAR *str )
static inline HDC get_display_dc(void)
{
static const WCHAR DISPLAY[] = {'D','I','S','P','L','A','Y',0};
static HDC display_dc;
EnterCriticalSection( &display_dc_section );
if (!display_dc)
{
display_dc = CreateICW( DISPLAY, NULL, NULL, NULL );
@ -613,10 +624,21 @@ static inline HDC get_display_dc(void)
return display_dc;
}
static inline void release_display_dc( HDC hdc )
{
LeaveCriticalSection( &display_dc_section );
}
static inline int get_display_dpi(void)
{
static int display_dpi;
if (!display_dpi) display_dpi = GetDeviceCaps( get_display_dc(), LOGPIXELSY );
HDC hdc;
if (!display_dpi)
{
hdc = get_display_dc();
display_dpi = GetDeviceCaps( hdc, LOGPIXELSY );
release_display_dc( hdc );
}
return display_dpi;
}
@ -629,33 +651,36 @@ static INT CALLBACK real_fontname_proc(const LOGFONTW *lf, const TEXTMETRICW *nt
return 0;
}
static void get_real_fontname(LOGFONTW *lf)
static void get_real_fontname( HDC hdc, LOGFONTW *lf )
{
EnumFontFamiliesExW(get_display_dc(), lf, real_fontname_proc, (LPARAM)lf, 0);
EnumFontFamiliesExW(hdc, lf, real_fontname_proc, (LPARAM)lf, 0);
}
/* adjust some of the raw values found in the registry */
static void normalize_nonclientmetrics( NONCLIENTMETRICSW *pncm)
{
TEXTMETRICW tm;
HDC hdc = get_display_dc();
if( pncm->iBorderWidth < 1) pncm->iBorderWidth = 1;
if( pncm->iCaptionWidth < 8) pncm->iCaptionWidth = 8;
if( pncm->iScrollWidth < 8) pncm->iScrollWidth = 8;
if( pncm->iScrollHeight < 8) pncm->iScrollHeight = 8;
/* adjust some heights to the corresponding font */
get_text_metr_size( get_display_dc(), &pncm->lfMenuFont, &tm, NULL);
get_text_metr_size( hdc, &pncm->lfMenuFont, &tm, NULL);
pncm->iMenuHeight = max( pncm->iMenuHeight, 2 + tm.tmHeight + tm.tmExternalLeading );
get_real_fontname( &pncm->lfMenuFont );
get_text_metr_size( get_display_dc(), &pncm->lfCaptionFont, &tm, NULL);
get_real_fontname( hdc, &pncm->lfMenuFont );
get_text_metr_size( hdc, &pncm->lfCaptionFont, &tm, NULL);
pncm->iCaptionHeight = max( pncm->iCaptionHeight, 2 + tm.tmHeight);
get_real_fontname( &pncm->lfCaptionFont );
get_text_metr_size( get_display_dc(), &pncm->lfSmCaptionFont, &tm, NULL);
get_real_fontname( hdc, &pncm->lfCaptionFont );
get_text_metr_size( hdc, &pncm->lfSmCaptionFont, &tm, NULL);
pncm->iSmCaptionHeight = max( pncm->iSmCaptionHeight, 2 + tm.tmHeight);
get_real_fontname( &pncm->lfSmCaptionFont );
get_real_fontname( hdc, &pncm->lfSmCaptionFont );
get_real_fontname( &pncm->lfStatusFont );
get_real_fontname( &pncm->lfMessageFont );
get_real_fontname( hdc, &pncm->lfStatusFont );
get_real_fontname( hdc, &pncm->lfMessageFont );
release_display_dc( hdc );
}
static BOOL CALLBACK enum_monitors( HMONITOR monitor, HDC hdc, LPRECT rect, LPARAM lp )
@ -2378,14 +2403,21 @@ INT WINAPI GetSystemMetrics( INT index )
{
NONCLIENTMETRICSW ncm;
UINT ret;
HDC hdc;
/* some metrics are dynamic */
switch (index)
{
case SM_CXSCREEN:
return GetDeviceCaps( get_display_dc(), HORZRES );
hdc = get_display_dc();
ret = GetDeviceCaps( hdc, HORZRES );
release_display_dc( hdc );
return ret;
case SM_CYSCREEN:
return GetDeviceCaps( get_display_dc(), VERTRES );
hdc = get_display_dc();
ret = GetDeviceCaps( hdc, VERTRES );
release_display_dc( hdc );
return ret;
case SM_CXVSCROLL:
case SM_CYHSCROLL:
get_entry( &entry_SCROLLWIDTH, 0, &ret );
@ -2447,7 +2479,9 @@ INT WINAPI GetSystemMetrics( INT index )
case SM_CXMIN:
ncm.cbSize = sizeof(ncm);
SystemParametersInfoW( SPI_GETNONCLIENTMETRICS, 0, &ncm, 0 );
get_text_metr_size( get_display_dc(), &ncm.lfCaptionFont, NULL, &ret );
hdc = get_display_dc();
get_text_metr_size( hdc, &ncm.lfCaptionFont, NULL, &ret );
release_display_dc( hdc );
return 3 * ncm.iCaptionWidth + ncm.iCaptionHeight + 4 * ret + 2 * GetSystemMetrics(SM_CXFRAME) + 4;
case SM_CYMIN:
return GetSystemMetrics( SM_CYCAPTION) + 2 * GetSystemMetrics( SM_CYFRAME);
@ -2564,7 +2598,9 @@ INT WINAPI GetSystemMetrics( INT index )
TEXTMETRICW tm;
ncm.cbSize = sizeof(ncm);
SystemParametersInfoW( SPI_GETNONCLIENTMETRICS, 0, &ncm, 0 );
get_text_metr_size( get_display_dc(), &ncm.lfMenuFont, &tm, NULL);
hdc = get_display_dc();
get_text_metr_size( hdc, &ncm.lfMenuFont, &tm, NULL);
release_display_dc( hdc );
return tm.tmHeight <= 0 ? 13 : ((tm.tmHeight + tm.tmExternalLeading + 1) / 2) * 2 - 1;
}
case SM_SLOWMACHINE: