Bug 426660 - "Allow Firefox themes to change based on the OS theme" [p=ehsan.akhgari@gmail.com (Ehsan Akhgari [ehsan]) r=vlad sr=dbaron a=blocking1.9+]

layout/style/nsCSSRuleProcessor.cpp

@@ -23,6 +23,7 @@
  * Contributor(s):
  *   L. David Baron <dbaron@dbaron.org>
  *   Daniel Glazman <glazman@netscape.com>
+ *   Ehsan Akhgari <ehsan.akhgari@gmail.com>
  *
  * Alternatively, the contents of this file may be used under the terms of
  * either of the GNU General Public License Version 2 or later (the "GPL"),
@@ -782,6 +783,11 @@ InitSystemMetrics()
     sSystemMetrics->AppendElement(do_GetAtom("images-in-menus"));
   }
 
+  rv = lookAndFeel->GetMetric(nsILookAndFeel::eMetric_WindowsDefaultTheme, metricResult);
+  if (NS_SUCCEEDED(rv) && metricResult) {
+    sSystemMetrics->AppendElement(do_GetAtom("windows-default-theme"));
+  }
+
   return PR_TRUE;
 }
 

widget/public/nsILookAndFeel.h

@@ -213,6 +213,15 @@ public:
     eMetric_TreeScrollLinesMax,                           // the maximum number of lines to be scrolled at ones
     eMetric_TabFocusModel,                                // What type of tab-order to use
 
+    /*
+     * A Boolean value to determine whether the Windows default theme is
+     * being used.
+     *
+     * The value of this metric is not used on other platforms. These platforms
+     * should return NS_ERROR_NOT_IMPLEMENTED when queried for this metric.
+     */
+    eMetric_WindowsDefaultTheme,
+
     /*
      * eMetric_AlertNotificationOrigin indicates from which corner of the
      * screen alerts slide in, and from which direction (horizontal/vertical).

widget/src/beos/nsLookAndFeel.cpp

@@ -420,6 +420,10 @@ NS_IMETHODIMP nsLookAndFeel::GetMetric(const nsMetricID aID, PRInt32 & aMetric)
     case eMetric_TreeScrollLinesMax:
       aMetric = 3;
       break;
+    case eMetric_WindowsDefaultTheme:
+      aMetric = 0;
+      res = NS_ERROR_NOT_IMPLEMENTED;
+      break;
     case eMetric_IMERawInputUnderlineStyle:
     case eMetric_IMEConvertedTextUnderlineStyle:
       aMetric = NS_UNDERLINE_STYLE_SOLID;

widget/src/cocoa/nsLookAndFeel.mm

@@ -588,6 +588,10 @@ NS_IMETHODIMP nsLookAndFeel::GetMetric(const nsMetricID aID, PRInt32 & aMetric)
     case eMetric_TreeScrollLinesMax:
       aMetric = 3;
       break;
+    case eMetric_WindowsDefaultTheme:
+      aMetric = 0;
+      res = NS_ERROR_NOT_IMPLEMENTED;
+      break;
     case eMetric_TabFocusModel:
     {
       // we should probably cache this

widget/src/gtk2/nsLookAndFeel.cpp

@@ -528,6 +528,10 @@ NS_IMETHODIMP nsLookAndFeel::GetMetric(const nsMetricID aID, PRInt32 & aMetric)
     case eMetric_TreeScrollLinesMax:
         aMetric = 3;
         break;
+    case eMetric_WindowsDefaultTheme:
+        aMetric = 0;
+        res = NS_ERROR_NOT_IMPLEMENTED;
+        break;
     case eMetric_IMERawInputUnderlineStyle:
     case eMetric_IMEConvertedTextUnderlineStyle:
         aMetric = NS_UNDERLINE_STYLE_SOLID;

widget/src/os2/nsLookAndFeel.cpp

@@ -364,6 +364,10 @@ NS_IMETHODIMP nsLookAndFeel::GetMetric(const nsMetricID aID, PRInt32 & aMetric)
     case eMetric_TreeScrollLinesMax:
         aMetric = 3;
         break;
+    case eMetric_WindowsDefaultTheme:
+        aMetric = 0;
+        res = NS_ERROR_NOT_IMPLEMENTED;
+        break;
     case eMetric_IMERawInputUnderlineStyle:
     case eMetric_IMEConvertedTextUnderlineStyle:
         aMetric = NS_UNDERLINE_STYLE_SOLID;

widget/src/photon/nsLookAndFeel.cpp

@@ -364,6 +364,10 @@ NS_IMETHODIMP nsLookAndFeel::GetMetric(const nsMetricID aID, PRInt32 & aMetric)
   case eMetric_TreeScrollLinesMax:
     aMetric = 3;
     break;
+  case eMetric_WindowsDefaultTheme:
+    aMetric = 0;
+    res = NS_ERROR_NOT_IMPLEMENTED;
+    break;
   case eMetric_IMERawInputUnderlineStyle:
   case eMetric_IMEConvertedTextUnderlineStyle:
     aMetric = NS_UNDERLINE_STYLE_SOLID;

widget/src/windows/nsLookAndFeel.cpp

@@ -23,6 +23,7 @@
  *   Michael Lowe <michael.lowe@bigfoot.com>
  *   Jens Bannmann <jens.b@web.de>
  *   Ryan Jones <sciguyryan@gmail.com>
+ *   Ehsan Akhgari <ehsan.akhgari@gmail.com>
  *
  * Alternatively, the contents of this file may be used under the terms of
  * either the GNU General Public License Version 2 or later (the "GPL"), or
@@ -50,11 +51,16 @@ typedef HRESULT (WINAPI*CloseThemeDataPtr)(HANDLE hTheme);
 typedef HRESULT (WINAPI*GetThemeColorPtr)(HANDLE hTheme, int iPartId,
                                           int iStateId, int iPropId, OUT COLORREF* pFont);
 typedef BOOL (WINAPI*IsAppThemedPtr)(VOID);
+typedef HRESULT (WINAPI*GetCurrentThemeNamePtr)(LPWSTR pszThemeFileName, int dwMaxNameChars,
+                                                LPWSTR pszColorBuff, int cchMaxColorChars,
+                                                LPWSTR pszSizeBuff, int cchMaxSizeChars);
+
 
 static OpenThemeDataPtr openTheme = NULL;
 static CloseThemeDataPtr closeTheme = NULL;
 static GetThemeColorPtr getThemeColor = NULL;
 static IsAppThemedPtr isAppThemed = NULL;
+static GetCurrentThemeNamePtr getCurrentThemeName = NULL;
 
 static const char kThemeLibraryName[] = "uxtheme.dll";
 static HINSTANCE gThemeDLLInst = NULL;
@@ -118,6 +124,7 @@ nsLookAndFeel::nsLookAndFeel() : nsXPLookAndFeel()
     closeTheme = (CloseThemeDataPtr)GetProcAddress(gThemeDLLInst, "CloseThemeData");
     getThemeColor = (GetThemeColorPtr)GetProcAddress(gThemeDLLInst, "GetThemeColor");
     isAppThemed = (IsAppThemedPtr)GetProcAddress(gThemeDLLInst, "IsAppThemed");
+    getCurrentThemeName = (GetCurrentThemeNamePtr)GetProcAddress(gThemeDLLInst, "GetCurrentThemeName");
     gMenuTheme = openTheme(NULL, L"Menu");
   }
 #endif
@@ -498,6 +505,42 @@ NS_IMETHODIMP nsLookAndFeel::GetMetric(const nsMetricID aID, PRInt32 & aMetric)
     case eMetric_TreeScrollLinesMax:
         aMetric = 3;
         break;
+    case eMetric_WindowsDefaultTheme:
+        aMetric = 0;
+#ifndef WINCE
+        if (getCurrentThemeName) {
+          WCHAR themeFileName[MAX_PATH + 1] = {L'\0'};
+          HRESULT hresult = getCurrentThemeName(themeFileName, MAX_PATH,
+                                                NULL, 0, NULL, 0);
+          if (hresult == S_OK) {
+            const WCHAR * defaultThemeName = NULL;
+            switch (GetWindowsVersion()) {
+              case WINXP_VERSION:
+              case WIN2K3_VERSION:
+                defaultThemeName = L"luna.msstyles";
+                break;
+
+              case VISTA_VERSION:
+                defaultThemeName = L"aero.msstyles";
+                break;
+
+              default:
+                res = NS_ERROR_NOT_IMPLEMENTED;
+                break;
+            }
+            const int pathLen = lstrlenW(themeFileName),
+                      defaultLen = lstrlenW(defaultThemeName);
+            if (pathLen > defaultLen &&
+                !wcsicmp(themeFileName + pathLen - defaultLen, defaultThemeName)) {
+              aMetric = 1;
+            }
+          }
+        } else
+#endif
+        {
+          res = NS_ERROR_NOT_IMPLEMENTED;
+        }
+        break;
 #ifndef WINCE
     case eMetric_AlertNotificationOrigin:
         aMetric = 0;