uxtheme: Save temporary system metrics to a struct in memory.
So that temporary system metrics are not saved in the registry. Saving them to the registry creates a race condition when two processes are trying to activate theming at the same time, one process might save themed system metrics instead of unthemed system metrics to the registry. The race condition will be more apparent when initializing a wine prefix after theming is turned on by default in wine.inf. This patch refactors the system metric helper functions to use an in-memory struct and is a prerequisite to remove the race condition. Signed-off-by: Zhiyi Zhang <zzhang@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Zhiyi Zhang
Alexandre Julliard
parent
f712a98d12
commit
aefcd057b1
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@ -236,217 +236,182 @@ static const WCHAR * const SysColorsNames[] =
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static const WCHAR strColorKey[] = L"Control Panel\\Colors";
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static const struct BackupSysParam
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{
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int spiGet, spiSet;
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const WCHAR* keyName;
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} backupSysParams[] =
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{
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{SPI_GETFLATMENU, SPI_SETFLATMENU, L"FlatMenu"},
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{SPI_GETGRADIENTCAPTIONS, SPI_SETGRADIENTCAPTIONS, L"GradientCaption"},
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{-1, -1, 0}
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};
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#define NUM_SYS_COLORS (COLOR_MENUBAR+1)
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static void save_sys_colors (HKEY baseKey)
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struct system_metrics
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{
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WCHAR colorStr[13];
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HKEY hKey;
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int i, length;
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COLORREF system_colors[NUM_SYS_COLORS];
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NONCLIENTMETRICSW non_client_metrics;
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LOGFONTW icon_title_font;
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DWORD gradient_caption;
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DWORD flat_menu;
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};
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if (RegCreateKeyExW( baseKey, strColorKey,
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0, 0, 0, KEY_ALL_ACCESS,
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0, &hKey, 0 ) == ERROR_SUCCESS)
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{
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for (i = 0; i < NUM_SYS_COLORS; i++)
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{
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COLORREF col = GetSysColor (i);
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length = swprintf(colorStr, ARRAY_SIZE(colorStr), L"%d %d %d", GetRValue(col),
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GetGValue(col), GetBValue(col));
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RegSetValueExW(hKey, SysColorsNames[i], 0, REG_SZ, (BYTE *)colorStr,
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(length + 1) * sizeof(WCHAR));
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}
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RegCloseKey (hKey);
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}
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}
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/* Before activating a theme, query current system colors, certain settings
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* and backup them in the registry, so they can be restored when the theme
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* is deactivated */
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static void UXTHEME_BackupSystemMetrics(void)
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static BOOL UXTHEME_GetSystemMetrics(struct system_metrics *metrics)
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{
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DPI_AWARENESS_CONTEXT old_context;
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HKEY hKey;
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const struct BackupSysParam* bsp = backupSysParams;
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BOOL ret = FALSE;
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int i;
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for (i = 0; i < NUM_SYS_COLORS; ++i)
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metrics->system_colors[i] = GetSysColor(i);
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old_context = SetThreadDpiAwarenessContext(DPI_AWARENESS_CONTEXT_UNAWARE);
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if (RegCreateKeyExW( HKEY_CURRENT_USER, szThemeManager,
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0, 0, 0, KEY_ALL_ACCESS,
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0, &hKey, 0) == ERROR_SUCCESS)
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{
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NONCLIENTMETRICSW ncm;
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LOGFONTW iconTitleFont;
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/* back up colors */
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save_sys_colors (hKey);
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/* back up "other" settings */
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while (bsp->spiGet >= 0)
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{
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DWORD value;
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SystemParametersInfoW (bsp->spiGet, 0, &value, 0);
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RegSetValueExW (hKey, bsp->keyName, 0, REG_DWORD,
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(LPBYTE)&value, sizeof (value));
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bsp++;
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}
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/* back up non-client metrics */
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memset (&ncm, 0, sizeof (ncm));
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ncm.cbSize = sizeof (ncm);
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SystemParametersInfoW (SPI_GETNONCLIENTMETRICS, sizeof (ncm), &ncm, 0);
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RegSetValueExW (hKey, L"NonClientMetrics", 0, REG_BINARY, (BYTE*)&ncm,
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sizeof (ncm));
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memset (&iconTitleFont, 0, sizeof (iconTitleFont));
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SystemParametersInfoW (SPI_GETICONTITLELOGFONT, sizeof (iconTitleFont),
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&iconTitleFont, 0);
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RegSetValueExW (hKey, L"IconTitleFont", 0, REG_BINARY,
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(LPBYTE)&iconTitleFont, sizeof (iconTitleFont));
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RegCloseKey (hKey);
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}
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memset(&metrics->non_client_metrics, 0, sizeof(metrics->non_client_metrics));
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metrics->non_client_metrics.cbSize = sizeof(metrics->non_client_metrics);
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if (!SystemParametersInfoW(SPI_GETNONCLIENTMETRICS, sizeof(metrics->non_client_metrics),
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&metrics->non_client_metrics, 0))
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goto done;
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memset(&metrics->icon_title_font, 0, sizeof(metrics->icon_title_font));
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if (!SystemParametersInfoW(SPI_GETICONTITLELOGFONT, sizeof(metrics->icon_title_font),
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&metrics->icon_title_font, 0))
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goto done;
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if (!SystemParametersInfoW(SPI_GETGRADIENTCAPTIONS, 0, &metrics->gradient_caption, 0))
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goto done;
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if (!SystemParametersInfoW(SPI_GETFLATMENU, 0, &metrics->flat_menu, 0))
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goto done;
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ret = TRUE;
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done:
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SetThreadDpiAwarenessContext(old_context);
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return ret;
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}
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/* Read back old settings after a theme was deactivated */
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static void UXTHEME_RestoreSystemMetrics(void)
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static BOOL UXTHEME_GetUnthemedSystemMetrics(struct system_metrics *metrics)
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{
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DPI_AWARENESS_CONTEXT old_context;
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HKEY hKey;
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const struct BackupSysParam* bsp = backupSysParams;
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HKEY theme_manager_key = NULL, color_key = NULL;
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BOOL ret = FALSE;
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WCHAR string[13];
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int i, r, g, b;
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DWORD size;
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old_context = SetThreadDpiAwarenessContext(DPI_AWARENESS_CONTEXT_UNAWARE);
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if (RegOpenKeyExW(HKEY_CURRENT_USER, szThemeManager, 0, KEY_QUERY_VALUE, &theme_manager_key))
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goto done;
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if (RegOpenKeyExW (HKEY_CURRENT_USER, szThemeManager,
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0, KEY_QUERY_VALUE, &hKey) == ERROR_SUCCESS)
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if (RegOpenKeyExW(theme_manager_key, strColorKey, 0, KEY_QUERY_VALUE, &color_key))
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goto done;
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for (i = 0; i < NUM_SYS_COLORS; ++i)
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{
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HKEY colorKey;
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/* read backed-up colors */
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if (RegOpenKeyExW (hKey, strColorKey,
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0, KEY_QUERY_VALUE, &colorKey) == ERROR_SUCCESS)
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{
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int i;
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COLORREF sysCols[NUM_SYS_COLORS];
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int sysColsIndices[NUM_SYS_COLORS];
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int sysColCount = 0;
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for (i = 0; i < NUM_SYS_COLORS; i++)
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{
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DWORD type;
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WCHAR colorStr[13];
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DWORD count = sizeof(colorStr);
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size = sizeof(string);
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if (RegQueryValueExW(color_key, SysColorsNames[i], 0, NULL, (BYTE *)string, &size))
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goto done;
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if (RegQueryValueExW(colorKey, SysColorsNames[i], 0, &type, (LPBYTE)colorStr,
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&count) == ERROR_SUCCESS)
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{
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int r, g, b;
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if (swscanf(colorStr, L"%d %d %d", &r, &g, &b) == 3)
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{
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sysColsIndices[sysColCount] = i;
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sysCols[sysColCount] = RGB(r, g, b);
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sysColCount++;
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}
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}
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}
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RegCloseKey (colorKey);
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SetSysColors (sysColCount, sysColsIndices, sysCols);
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}
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/* read backed-up other settings */
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while (bsp->spiGet >= 0)
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{
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DWORD value;
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DWORD count = sizeof(value);
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DWORD type;
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if (RegQueryValueExW (hKey, bsp->keyName, 0,
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&type, (LPBYTE)&value, &count) == ERROR_SUCCESS)
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{
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SystemParametersInfoW (bsp->spiSet, 0, UlongToPtr(value), SPIF_UPDATEINIFILE);
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}
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bsp++;
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}
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/* read backed-up non-client metrics */
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{
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NONCLIENTMETRICSW ncm;
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LOGFONTW iconTitleFont;
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DWORD count = sizeof(ncm);
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DWORD type;
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if (swscanf(string, L"%d %d %d", &r, &g, &b) != 3)
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goto done;
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if (RegQueryValueExW (hKey, L"NonClientMetrics", 0,
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&type, (LPBYTE)&ncm, &count) == ERROR_SUCCESS)
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{
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SystemParametersInfoW (SPI_SETNONCLIENTMETRICS,
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count, &ncm, SPIF_UPDATEINIFILE);
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}
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count = sizeof(iconTitleFont);
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if (RegQueryValueExW (hKey, L"IconTitleFont", 0,
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&type, (LPBYTE)&iconTitleFont, &count) == ERROR_SUCCESS)
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{
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SystemParametersInfoW (SPI_SETICONTITLELOGFONT,
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count, &iconTitleFont, SPIF_UPDATEINIFILE);
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}
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}
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RegCloseKey (hKey);
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metrics->system_colors[i] = RGB(r, g, b);
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}
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SetThreadDpiAwarenessContext(old_context);
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size = sizeof(metrics->non_client_metrics);
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if (RegQueryValueExW(theme_manager_key, L"NonClientMetrics", 0, NULL,
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(BYTE *)&metrics->non_client_metrics, &size))
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goto done;
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size = sizeof(metrics->icon_title_font);
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if (RegQueryValueExW(theme_manager_key, L"IconTitleFont", 0, NULL,
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(BYTE *)&metrics->icon_title_font, &size))
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goto done;
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size = sizeof(metrics->gradient_caption);
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if (RegQueryValueExW(theme_manager_key, L"GradientCaption", 0, NULL,
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(BYTE *)&metrics->gradient_caption, &size))
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goto done;
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size = sizeof(metrics->flat_menu);
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if (RegQueryValueExW(theme_manager_key, L"FlatMenu", 0, NULL, (BYTE *)&metrics->flat_menu,
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&size))
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goto done;
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ret = TRUE;
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done:
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RegCloseKey(color_key);
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RegCloseKey(theme_manager_key);
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return ret;
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}
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static void UXTHEME_SaveUnthemedSystemMetrics(struct system_metrics *metrics)
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{
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HKEY theme_manager_key, color_key;
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WCHAR string[13];
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DWORD length;
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int i;
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if (!RegCreateKeyExW(HKEY_CURRENT_USER, szThemeManager, 0, 0, 0, KEY_ALL_ACCESS, 0,
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&theme_manager_key, 0))
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{
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if (!RegCreateKeyExW(theme_manager_key, strColorKey, 0, 0, 0, KEY_ALL_ACCESS, 0, &color_key,
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0))
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{
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for (i = 0; i < NUM_SYS_COLORS; ++i)
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{
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length = swprintf(string, ARRAY_SIZE(string), L"%d %d %d",
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GetRValue(metrics->system_colors[i]),
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GetGValue(metrics->system_colors[i]),
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GetBValue(metrics->system_colors[i]));
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RegSetValueExW(color_key, SysColorsNames[i], 0, REG_SZ, (BYTE *)string,
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(length + 1) * sizeof(WCHAR));
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}
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RegCloseKey(color_key);
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}
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RegSetValueExW(theme_manager_key, L"NonClientMetrics", 0, REG_BINARY,
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(BYTE *)&metrics->non_client_metrics, sizeof(metrics->non_client_metrics));
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RegSetValueExW(theme_manager_key, L"IconTitleFont", 0, REG_BINARY,
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(BYTE *)&metrics->icon_title_font, sizeof(metrics->icon_title_font));
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RegSetValueExW(theme_manager_key, L"GradientCaption", 0, REG_DWORD,
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(BYTE *)&metrics->gradient_caption, sizeof(metrics->gradient_caption));
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RegSetValueExW(theme_manager_key, L"FlatMenu", 0, REG_DWORD, (BYTE *)&metrics->flat_menu,
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sizeof(metrics->flat_menu));
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RegCloseKey(theme_manager_key);
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}
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}
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/* Make system settings persistent, so they're in effect even w/o uxtheme
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* loaded.
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* For efficiency reasons, only the last SystemParametersInfoW sets
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* SPIF_SENDWININICHANGE */
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static void UXTHEME_SaveSystemMetrics(void)
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static void UXTHEME_SaveSystemMetrics(struct system_metrics *metrics, BOOL send_syscolor_change)
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{
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const struct BackupSysParam* bsp = backupSysParams;
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NONCLIENTMETRICSW ncm;
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LOGFONTW iconTitleFont;
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int i, length, index[NUM_SYS_COLORS];
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DPI_AWARENESS_CONTEXT old_context;
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WCHAR string[13];
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HKEY hkey;
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save_sys_colors (HKEY_CURRENT_USER);
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while (bsp->spiGet >= 0)
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if (!RegCreateKeyExW(HKEY_CURRENT_USER, strColorKey, 0, 0, 0, KEY_ALL_ACCESS, 0, &hkey, 0))
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{
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DWORD value;
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SystemParametersInfoW (bsp->spiGet, 0, &value, 0);
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SystemParametersInfoW (bsp->spiSet, 0, UlongToPtr(value), SPIF_UPDATEINIFILE);
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bsp++;
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for (i = 0; i < NUM_SYS_COLORS; ++i)
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{
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length = swprintf(string, ARRAY_SIZE(string), L"%d %d %d",
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GetRValue(metrics->system_colors[i]),
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GetGValue(metrics->system_colors[i]),
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GetBValue(metrics->system_colors[i]));
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RegSetValueExW(hkey, SysColorsNames[i], 0, REG_SZ, (BYTE *)string,
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(length + 1) * sizeof(WCHAR));
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}
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RegCloseKey(hkey);
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}
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memset (&ncm, 0, sizeof (ncm));
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ncm.cbSize = sizeof (ncm);
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SystemParametersInfoW (SPI_GETNONCLIENTMETRICS, sizeof (ncm), &ncm, 0);
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SystemParametersInfoW (SPI_SETNONCLIENTMETRICS, sizeof (ncm), &ncm,
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SPIF_UPDATEINIFILE);
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memset (&iconTitleFont, 0, sizeof (iconTitleFont));
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SystemParametersInfoW (SPI_GETICONTITLELOGFONT, sizeof (iconTitleFont),
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&iconTitleFont, 0);
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SystemParametersInfoW (SPI_SETICONTITLELOGFONT, sizeof (iconTitleFont),
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&iconTitleFont, SPIF_UPDATEINIFILE | SPIF_SENDCHANGE);
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if (send_syscolor_change)
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{
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for (i = 0; i < NUM_SYS_COLORS; ++i)
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index[i] = i;
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SetSysColors(NUM_SYS_COLORS, index, metrics->system_colors);
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}
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old_context = SetThreadDpiAwarenessContext(DPI_AWARENESS_CONTEXT_UNAWARE);
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SystemParametersInfoW(SPI_SETNONCLIENTMETRICS, sizeof(metrics->non_client_metrics),
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&metrics->non_client_metrics, SPIF_UPDATEINIFILE);
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SystemParametersInfoW(SPI_SETICONTITLELOGFONT, sizeof(metrics->icon_title_font),
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&metrics->icon_title_font, SPIF_UPDATEINIFILE);
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SystemParametersInfoW(SPI_SETGRADIENTCAPTIONS, 0, (void *)(INT_PTR)metrics->gradient_caption,
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SPIF_UPDATEINIFILE);
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SystemParametersInfoW(SPI_SETFLATMENU, 0, (void *)(INT_PTR)metrics->flat_menu,
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SPIF_UPDATEINIFILE | SPIF_SENDCHANGE);
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SetThreadDpiAwarenessContext(old_context);
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}
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/***********************************************************************
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@ -456,11 +421,17 @@ static void UXTHEME_SaveSystemMetrics(void)
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*/
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static HRESULT UXTHEME_SetActiveTheme(PTHEME_FILE tf)
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{
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struct system_metrics metrics;
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HKEY hKey;
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WCHAR tmp[2];
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HRESULT hr;
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if(tf && !bThemeActive) UXTHEME_BackupSystemMetrics();
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if (tf && !bThemeActive)
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{
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if (UXTHEME_GetSystemMetrics(&metrics))
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UXTHEME_SaveUnthemedSystemMetrics(&metrics);
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}
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hr = MSSTYLES_SetActiveTheme(tf, TRUE);
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if(FAILED(hr))
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return hr;
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@ -471,7 +442,6 @@ static HRESULT UXTHEME_SetActiveTheme(PTHEME_FILE tf)
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lstrcpynW(szCurrentSize, tf->pszSelectedSize, ARRAY_SIZE(szCurrentSize));
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}
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else {
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UXTHEME_RestoreSystemMetrics();
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bThemeActive = FALSE;
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szCurrentTheme[0] = '\0';
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szCurrentColor[0] = '\0';
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@ -501,9 +471,17 @@ static HRESULT UXTHEME_SetActiveTheme(PTHEME_FILE tf)
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}
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else
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TRACE("Failed to open theme registry key\n");
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UXTHEME_SaveSystemMetrics ();
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if (bThemeActive)
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{
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if (UXTHEME_GetSystemMetrics(&metrics))
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UXTHEME_SaveSystemMetrics(&metrics, FALSE);
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}
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else
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{
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if (UXTHEME_GetUnthemedSystemMetrics(&metrics))
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UXTHEME_SaveSystemMetrics(&metrics, TRUE);
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}
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return hr;
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}
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