diff -r 000000000000 -r 6474c204b198 widget/windows/nsLookAndFeel.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/widget/windows/nsLookAndFeel.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,678 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsLookAndFeel.h"
+#include <windows.h>
+#include <shellapi.h>
+#include "nsStyleConsts.h"
+#include "nsUXThemeData.h"
+#include "nsUXThemeConstants.h"
+#include "gfxFont.h"
+#include "gfxWindowsPlatform.h"
+#include "mozilla/Telemetry.h"
+#include "mozilla/WindowsVersion.h"
+#include "gfxFontConstants.h"
+
+using namespace mozilla;
+using namespace mozilla::widget;
+
+//static
+LookAndFeel::OperatingSystemVersion
+nsLookAndFeel::GetOperatingSystemVersion()
+{
+  static OperatingSystemVersion version = eOperatingSystemVersion_Unknown;
+
+  if (version != eOperatingSystemVersion_Unknown) {
+    return version;
+  }
+
+  if (IsWin8OrLater()) {
+    version = eOperatingSystemVersion_Windows8;
+  } else if (IsWin7OrLater()) {
+    version = eOperatingSystemVersion_Windows7;
+  } else if (IsVistaOrLater()) {
+    version = eOperatingSystemVersion_WindowsVista;
+  } else {
+    version = eOperatingSystemVersion_WindowsXP;
+  }
+
+  return version;
+}
+
+static nsresult GetColorFromTheme(nsUXThemeClass cls,
+                           int32_t aPart,
+                           int32_t aState,
+                           int32_t aPropId,
+                           nscolor &aColor)
+{
+  COLORREF color;
+  HRESULT hr = GetThemeColor(nsUXThemeData::GetTheme(cls), aPart, aState, aPropId, &color);
+  if (hr == S_OK)
+  {
+    aColor = COLOREF_2_NSRGB(color);
+    return NS_OK;
+  }
+  return NS_ERROR_FAILURE;
+}
+
+static int32_t GetSystemParam(long flag, int32_t def)
+{
+    DWORD value; 
+    return ::SystemParametersInfo(flag, 0, &value, 0) ? value : def;
+}
+
+namespace mozilla {
+namespace widget {
+// This is in use here and in dom/events/TouchEvent.cpp
+int32_t IsTouchDeviceSupportPresent()
+{
+  int32_t touchCapabilities;
+  touchCapabilities = ::GetSystemMetrics(SM_DIGITIZER);
+  return ((touchCapabilities & NID_READY) && 
+          (touchCapabilities & (NID_EXTERNAL_TOUCH | NID_INTEGRATED_TOUCH)));
+}
+} }
+
+nsLookAndFeel::nsLookAndFeel() : nsXPLookAndFeel()
+{
+  mozilla::Telemetry::Accumulate(mozilla::Telemetry::TOUCH_ENABLED_DEVICE,
+                                 IsTouchDeviceSupportPresent());
+}
+
+nsLookAndFeel::~nsLookAndFeel()
+{
+}
+
+nsresult
+nsLookAndFeel::NativeGetColor(ColorID aID, nscolor &aColor)
+{
+  nsresult res = NS_OK;
+
+  int idx;
+  switch (aID) {
+    case eColorID_WindowBackground:
+        idx = COLOR_WINDOW;
+        break;
+    case eColorID_WindowForeground:
+        idx = COLOR_WINDOWTEXT;
+        break;
+    case eColorID_WidgetBackground:
+        idx = COLOR_BTNFACE;
+        break;
+    case eColorID_WidgetForeground:
+        idx = COLOR_BTNTEXT;
+        break;
+    case eColorID_WidgetSelectBackground:
+        idx = COLOR_HIGHLIGHT;
+        break;
+    case eColorID_WidgetSelectForeground:
+        idx = COLOR_HIGHLIGHTTEXT;
+        break;
+    case eColorID_Widget3DHighlight:
+        idx = COLOR_BTNHIGHLIGHT;
+        break;
+    case eColorID_Widget3DShadow:
+        idx = COLOR_BTNSHADOW;
+        break;
+    case eColorID_TextBackground:
+        idx = COLOR_WINDOW;
+        break;
+    case eColorID_TextForeground:
+        idx = COLOR_WINDOWTEXT;
+        break;
+    case eColorID_TextSelectBackground:
+    case eColorID_IMESelectedRawTextBackground:
+    case eColorID_IMESelectedConvertedTextBackground:
+        idx = COLOR_HIGHLIGHT;
+        break;
+    case eColorID_TextSelectForeground:
+    case eColorID_IMESelectedRawTextForeground:
+    case eColorID_IMESelectedConvertedTextForeground:
+        idx = COLOR_HIGHLIGHTTEXT;
+        break;
+    case eColorID_IMERawInputBackground:
+    case eColorID_IMEConvertedTextBackground:
+        aColor = NS_TRANSPARENT;
+        return NS_OK;
+    case eColorID_IMERawInputForeground:
+    case eColorID_IMEConvertedTextForeground:
+        aColor = NS_SAME_AS_FOREGROUND_COLOR;
+        return NS_OK;
+    case eColorID_IMERawInputUnderline:
+    case eColorID_IMEConvertedTextUnderline:
+        aColor = NS_SAME_AS_FOREGROUND_COLOR;
+        return NS_OK;
+    case eColorID_IMESelectedRawTextUnderline:
+    case eColorID_IMESelectedConvertedTextUnderline:
+        aColor = NS_TRANSPARENT;
+        return NS_OK;
+    case eColorID_SpellCheckerUnderline:
+        aColor = NS_RGB(0xff, 0, 0);
+        return NS_OK;
+
+    // New CSS 2 Color definitions
+    case eColorID_activeborder:
+      idx = COLOR_ACTIVEBORDER;
+      break;
+    case eColorID_activecaption:
+      idx = COLOR_ACTIVECAPTION;
+      break;
+    case eColorID_appworkspace:
+      idx = COLOR_APPWORKSPACE;
+      break;
+    case eColorID_background:
+      idx = COLOR_BACKGROUND;
+      break;
+    case eColorID_buttonface:
+    case eColorID__moz_buttonhoverface:
+      idx = COLOR_BTNFACE;
+      break;
+    case eColorID_buttonhighlight:
+      idx = COLOR_BTNHIGHLIGHT;
+      break;
+    case eColorID_buttonshadow:
+      idx = COLOR_BTNSHADOW;
+      break;
+    case eColorID_buttontext:
+    case eColorID__moz_buttonhovertext:
+      idx = COLOR_BTNTEXT;
+      break;
+    case eColorID_captiontext:
+      idx = COLOR_CAPTIONTEXT;
+      break;
+    case eColorID_graytext:
+      idx = COLOR_GRAYTEXT;
+      break;
+    case eColorID_highlight:
+    case eColorID__moz_html_cellhighlight:
+    case eColorID__moz_menuhover:
+      idx = COLOR_HIGHLIGHT;
+      break;
+    case eColorID__moz_menubarhovertext:
+      if (!IsVistaOrLater() || !IsAppThemed())
+      {
+        idx = nsUXThemeData::sFlatMenus ?
+                COLOR_HIGHLIGHTTEXT :
+                COLOR_MENUTEXT;
+        break;
+      }
+      // Fall through
+    case eColorID__moz_menuhovertext:
+      if (IsVistaOrLater() && IsAppThemed())
+      {
+        res = ::GetColorFromTheme(eUXMenu,
+                                  MENU_POPUPITEM, MPI_HOT, TMT_TEXTCOLOR, aColor);
+        if (NS_SUCCEEDED(res))
+          return res;
+        // fall through to highlight case
+      }
+    case eColorID_highlighttext:
+    case eColorID__moz_html_cellhighlighttext:
+      idx = COLOR_HIGHLIGHTTEXT;
+      break;
+    case eColorID_inactiveborder:
+      idx = COLOR_INACTIVEBORDER;
+      break;
+    case eColorID_inactivecaption:
+      idx = COLOR_INACTIVECAPTION;
+      break;
+    case eColorID_inactivecaptiontext:
+      idx = COLOR_INACTIVECAPTIONTEXT;
+      break;
+    case eColorID_infobackground:
+      idx = COLOR_INFOBK;
+      break;
+    case eColorID_infotext:
+      idx = COLOR_INFOTEXT;
+      break;
+    case eColorID_menu:
+      idx = COLOR_MENU;
+      break;
+    case eColorID_menutext:
+    case eColorID__moz_menubartext:
+      idx = COLOR_MENUTEXT;
+      break;
+    case eColorID_scrollbar:
+      idx = COLOR_SCROLLBAR;
+      break;
+    case eColorID_threeddarkshadow:
+      idx = COLOR_3DDKSHADOW;
+      break;
+    case eColorID_threedface:
+      idx = COLOR_3DFACE;
+      break;
+    case eColorID_threedhighlight:
+      idx = COLOR_3DHIGHLIGHT;
+      break;
+    case eColorID_threedlightshadow:
+      idx = COLOR_3DLIGHT;
+      break;
+    case eColorID_threedshadow:
+      idx = COLOR_3DSHADOW;
+      break;
+    case eColorID_window:
+      idx = COLOR_WINDOW;
+      break;
+    case eColorID_windowframe:
+      idx = COLOR_WINDOWFRAME;
+      break;
+    case eColorID_windowtext:
+      idx = COLOR_WINDOWTEXT;
+      break;
+    case eColorID__moz_eventreerow:
+    case eColorID__moz_oddtreerow:
+    case eColorID__moz_field:
+    case eColorID__moz_combobox:
+      idx = COLOR_WINDOW;
+      break;
+    case eColorID__moz_fieldtext:
+    case eColorID__moz_comboboxtext:
+      idx = COLOR_WINDOWTEXT;
+      break;
+    case eColorID__moz_dialog:
+    case eColorID__moz_cellhighlight:
+      idx = COLOR_3DFACE;
+      break;
+    case eColorID__moz_win_mediatext:
+      if (IsVistaOrLater() && IsAppThemed()) {
+        res = ::GetColorFromTheme(eUXMediaToolbar,
+                                  TP_BUTTON, TS_NORMAL, TMT_TEXTCOLOR, aColor);
+        if (NS_SUCCEEDED(res))
+          return res;
+      }
+      // if we've gotten here just return -moz-dialogtext instead
+      idx = COLOR_WINDOWTEXT;
+      break;
+    case eColorID__moz_win_communicationstext:
+      if (IsVistaOrLater() && IsAppThemed())
+      {
+        res = ::GetColorFromTheme(eUXCommunicationsToolbar,
+                                  TP_BUTTON, TS_NORMAL, TMT_TEXTCOLOR, aColor);
+        if (NS_SUCCEEDED(res))
+          return res;
+      }
+      // if we've gotten here just return -moz-dialogtext instead
+      idx = COLOR_WINDOWTEXT;
+      break;
+    case eColorID__moz_dialogtext:
+    case eColorID__moz_cellhighlighttext:
+      idx = COLOR_WINDOWTEXT;
+      break;
+    case eColorID__moz_dragtargetzone:
+      idx = COLOR_HIGHLIGHTTEXT;
+      break;
+    case eColorID__moz_buttondefault:
+      idx = COLOR_3DDKSHADOW;
+      break;
+    case eColorID__moz_nativehyperlinktext:
+      idx = COLOR_HOTLIGHT;
+      break;
+    default:
+      idx = COLOR_WINDOW;
+      break;
+    }
+
+  DWORD color = ::GetSysColor(idx);
+  aColor = COLOREF_2_NSRGB(color);
+
+  return res;
+}
+
+nsresult
+nsLookAndFeel::GetIntImpl(IntID aID, int32_t &aResult)
+{
+  nsresult res = nsXPLookAndFeel::GetIntImpl(aID, aResult);
+  if (NS_SUCCEEDED(res))
+    return res;
+  res = NS_OK;
+
+  switch (aID) {
+    case eIntID_CaretBlinkTime:
+        aResult = (int32_t)::GetCaretBlinkTime();
+        break;
+    case eIntID_CaretWidth:
+        aResult = 1;
+        break;
+    case eIntID_ShowCaretDuringSelection:
+        aResult = 0;
+        break;
+    case eIntID_SelectTextfieldsOnKeyFocus:
+        // Select textfield content when focused by kbd
+        // used by EventStateManager::sTextfieldSelectModel
+        aResult = 1;
+        break;
+    case eIntID_SubmenuDelay:
+        // This will default to the Windows' default
+        // (400ms) on error.
+        aResult = GetSystemParam(SPI_GETMENUSHOWDELAY, 400);
+        break;
+    case eIntID_TooltipDelay:
+        aResult = 500;
+        break;
+    case eIntID_MenusCanOverlapOSBar:
+        // we want XUL popups to be able to overlap the task bar.
+        aResult = 1;
+        break;
+    case eIntID_DragThresholdX:
+        // The system metric is the number of pixels at which a drag should
+        // start.  Our look and feel metric is the number of pixels you can
+        // move before starting a drag, so subtract 1.
+
+        aResult = ::GetSystemMetrics(SM_CXDRAG) - 1;
+        break;
+    case eIntID_DragThresholdY:
+        aResult = ::GetSystemMetrics(SM_CYDRAG) - 1;
+        break;
+    case eIntID_UseAccessibilityTheme:
+        // High contrast is a misnomer under Win32 -- any theme can be used with it, 
+        // e.g. normal contrast with large fonts, low contrast, etc.
+        // The high contrast flag really means -- use this theme and don't override it.
+        aResult = nsUXThemeData::IsHighContrastOn();
+        break;
+    case eIntID_ScrollArrowStyle:
+        aResult = eScrollArrowStyle_Single;
+        break;
+    case eIntID_ScrollSliderStyle:
+        aResult = eScrollThumbStyle_Proportional;
+        break;
+    case eIntID_TreeOpenDelay:
+        aResult = 1000;
+        break;
+    case eIntID_TreeCloseDelay:
+        aResult = 0;
+        break;
+    case eIntID_TreeLazyScrollDelay:
+        aResult = 150;
+        break;
+    case eIntID_TreeScrollDelay:
+        aResult = 100;
+        break;
+    case eIntID_TreeScrollLinesMax:
+        aResult = 3;
+        break;
+    case eIntID_WindowsClassic:
+        aResult = !IsAppThemed();
+        break;
+    case eIntID_TouchEnabled:
+        aResult = IsTouchDeviceSupportPresent();
+        break;
+    case eIntID_WindowsDefaultTheme:
+        aResult = nsUXThemeData::IsDefaultWindowTheme();
+        break;
+    case eIntID_WindowsThemeIdentifier:
+        aResult = nsUXThemeData::GetNativeThemeId();
+        break;
+
+    case eIntID_OperatingSystemVersionIdentifier:
+    {
+        aResult = GetOperatingSystemVersion();
+        break;
+    }
+
+    case eIntID_MacGraphiteTheme:
+    case eIntID_MacLionTheme:
+        aResult = 0;
+        res = NS_ERROR_NOT_IMPLEMENTED;
+        break;
+    case eIntID_DWMCompositor:
+        aResult = nsUXThemeData::CheckForCompositor();
+        break;
+    case eIntID_WindowsGlass:
+        // Aero Glass is only available prior to Windows 8 when DWM is used.
+        aResult = (nsUXThemeData::CheckForCompositor() && !IsWin8OrLater());
+        break;
+    case eIntID_AlertNotificationOrigin:
+        aResult = 0;
+        {
+          // Get task bar window handle
+          HWND shellWindow = FindWindowW(L"Shell_TrayWnd", nullptr);
+
+          if (shellWindow != nullptr)
+          {
+            // Determine position
+            APPBARDATA appBarData;
+            appBarData.hWnd = shellWindow;
+            appBarData.cbSize = sizeof(appBarData);
+            if (SHAppBarMessage(ABM_GETTASKBARPOS, &appBarData))
+            {
+              // Set alert origin as a bit field - see LookAndFeel.h
+              // 0 represents bottom right, sliding vertically.
+              switch(appBarData.uEdge)
+              {
+                case ABE_LEFT:
+                  aResult = NS_ALERT_HORIZONTAL | NS_ALERT_LEFT;
+                  break;
+                case ABE_RIGHT:
+                  aResult = NS_ALERT_HORIZONTAL;
+                  break;
+                case ABE_TOP:
+                  aResult = NS_ALERT_TOP;
+                  // fall through for the right-to-left handling.
+                case ABE_BOTTOM:
+                  // If the task bar is right-to-left,
+                  // move the origin to the left
+                  if (::GetWindowLong(shellWindow, GWL_EXSTYLE) &
+                        WS_EX_LAYOUTRTL)
+                    aResult |= NS_ALERT_LEFT;
+                  break;
+              }
+            }
+          }
+        }
+        break;
+    case eIntID_IMERawInputUnderlineStyle:
+    case eIntID_IMEConvertedTextUnderlineStyle:
+        aResult = NS_STYLE_TEXT_DECORATION_STYLE_DASHED;
+        break;
+    case eIntID_IMESelectedRawTextUnderlineStyle:
+    case eIntID_IMESelectedConvertedTextUnderline:
+        aResult = NS_STYLE_TEXT_DECORATION_STYLE_NONE;
+        break;
+    case eIntID_SpellCheckerUnderlineStyle:
+        aResult = NS_STYLE_TEXT_DECORATION_STYLE_WAVY;
+        break;
+    case eIntID_ScrollbarButtonAutoRepeatBehavior:
+        aResult = 0;
+        break;
+    case eIntID_SwipeAnimationEnabled:
+        aResult = 0;
+        break;
+    case eIntID_ColorPickerAvailable:
+        // We don't have a color picker implemented on Metro yet (bug 895464)
+        aResult = (XRE_GetWindowsEnvironment() != WindowsEnvironmentType_Metro);
+        break;
+    case eIntID_UseOverlayScrollbars:
+        aResult = (XRE_GetWindowsEnvironment() == WindowsEnvironmentType_Metro);
+        break;
+    case eIntID_AllowOverlayScrollbarsOverlap:
+        aResult = 0;
+        break;
+    case eIntID_ScrollbarDisplayOnMouseMove:
+        aResult = 1;
+        break;
+    case eIntID_ScrollbarFadeBeginDelay:
+        aResult = 2500;
+        break;
+    case eIntID_ScrollbarFadeDuration:
+        aResult = 350;
+        break;
+    default:
+        aResult = 0;
+        res = NS_ERROR_FAILURE;
+    }
+  return res;
+}
+
+nsresult
+nsLookAndFeel::GetFloatImpl(FloatID aID, float &aResult)
+{
+  nsresult res = nsXPLookAndFeel::GetFloatImpl(aID, aResult);
+  if (NS_SUCCEEDED(res))
+    return res;
+  res = NS_OK;
+
+  switch (aID) {
+    case eFloatID_IMEUnderlineRelativeSize:
+        aResult = 1.0f;
+        break;
+    case eFloatID_SpellCheckerUnderlineRelativeSize:
+        aResult = 1.0f;
+        break;
+    default:
+        aResult = -1.0;
+        res = NS_ERROR_FAILURE;
+    }
+  return res;
+}
+
+static bool
+GetSysFontInfo(HDC aHDC, LookAndFeel::FontID anID,
+               nsString &aFontName,
+               gfxFontStyle &aFontStyle)
+{
+  LOGFONTW* ptrLogFont = nullptr;
+  LOGFONTW logFont;
+  NONCLIENTMETRICSW ncm;
+  HGDIOBJ hGDI;
+  char16_t name[LF_FACESIZE];
+
+  // Depending on which stock font we want, there are three different
+  // places we might have to look it up.
+  switch (anID) {
+  case LookAndFeel::eFont_Icon:
+    if (!::SystemParametersInfoW(SPI_GETICONTITLELOGFONT,
+                                 sizeof(logFont), (PVOID)&logFont, 0))
+      return false;
+
+    ptrLogFont = &logFont;
+    break;
+
+  case LookAndFeel::eFont_Menu:
+  case LookAndFeel::eFont_MessageBox:
+  case LookAndFeel::eFont_SmallCaption:
+  case LookAndFeel::eFont_StatusBar:
+  case LookAndFeel::eFont_Tooltips:
+    ncm.cbSize = sizeof(NONCLIENTMETRICSW);
+    if (!::SystemParametersInfoW(SPI_GETNONCLIENTMETRICS,
+                                 sizeof(ncm), (PVOID)&ncm, 0))
+      return false;
+
+    switch (anID) {
+    case LookAndFeel::eFont_Menu:
+      ptrLogFont = &ncm.lfMenuFont;
+      break;
+    case LookAndFeel::eFont_MessageBox:
+      ptrLogFont = &ncm.lfMessageFont;
+      break;
+    case LookAndFeel::eFont_SmallCaption:
+      ptrLogFont = &ncm.lfSmCaptionFont;
+      break;
+    case LookAndFeel::eFont_StatusBar:
+    case LookAndFeel::eFont_Tooltips:
+      ptrLogFont = &ncm.lfStatusFont;
+      break;
+    }
+    break;
+
+  case LookAndFeel::eFont_Widget:
+  case LookAndFeel::eFont_Window:      // css3
+  case LookAndFeel::eFont_Document:
+  case LookAndFeel::eFont_Workspace:
+  case LookAndFeel::eFont_Desktop:
+  case LookAndFeel::eFont_Info:
+  case LookAndFeel::eFont_Dialog:
+  case LookAndFeel::eFont_Button:
+  case LookAndFeel::eFont_PullDownMenu:
+  case LookAndFeel::eFont_List:
+  case LookAndFeel::eFont_Field:
+  case LookAndFeel::eFont_Caption:
+    hGDI = ::GetStockObject(DEFAULT_GUI_FONT);
+    if (!hGDI)
+      return false;
+
+    if (::GetObjectW(hGDI, sizeof(logFont), &logFont) <= 0)
+      return false;
+
+    ptrLogFont = &logFont;
+    break;
+  }
+
+  // Get scaling factor from physical to logical pixels
+  float pixelScale = 1.0f / gfxWindowsPlatform::GetPlatform()->GetDPIScale();
+
+  // The lfHeight is in pixels, and it needs to be adjusted for the
+  // device it will be displayed on.
+  // Screens and Printers will differ in DPI
+  //
+  // So this accounts for the difference in the DeviceContexts
+  // The pixelScale will typically be 1.0 for the screen
+  // (though larger for hi-dpi screens where the Windows resolution
+  // scale factor is 125% or 150% or even more), and could be
+  // any value when going to a printer, for example pixelScale is
+  // 6.25 when going to a 600dpi printer.
+  float pixelHeight = -ptrLogFont->lfHeight;
+  if (pixelHeight < 0) {
+    HFONT hFont = ::CreateFontIndirectW(ptrLogFont);
+    if (!hFont)
+      return false;
+    HGDIOBJ hObject = ::SelectObject(aHDC, hFont);
+    TEXTMETRIC tm;
+    ::GetTextMetrics(aHDC, &tm);
+    ::SelectObject(aHDC, hObject);
+    ::DeleteObject(hFont);
+    pixelHeight = tm.tmAscent;
+  }
+  pixelHeight *= pixelScale;
+
+  // we have problem on Simplified Chinese system because the system
+  // report the default font size is 8 points. but if we use 8, the text
+  // display very ugly. force it to be at 9 points (12 pixels) on that
+  // system (cp936), but leave other sizes alone.
+  if (pixelHeight < 12 && ::GetACP() == 936)
+    pixelHeight = 12;
+
+  aFontStyle.size = pixelHeight;
+
+  // FIXME: What about oblique?
+  aFontStyle.style =
+    (ptrLogFont->lfItalic) ? NS_FONT_STYLE_ITALIC : NS_FONT_STYLE_NORMAL;
+
+  // FIXME: Other weights?
+  aFontStyle.weight =
+    (ptrLogFont->lfWeight == FW_BOLD ?
+        NS_FONT_WEIGHT_BOLD : NS_FONT_WEIGHT_NORMAL);
+
+  // FIXME: Set aFontStyle->stretch correctly!
+  aFontStyle.stretch = NS_FONT_STRETCH_NORMAL;
+
+  aFontStyle.systemFont = true;
+
+  name[0] = 0;
+  memcpy(name, ptrLogFont->lfFaceName, LF_FACESIZE*sizeof(char16_t));
+  aFontName = name;
+
+  return true;
+}
+
+bool
+nsLookAndFeel::GetFontImpl(FontID anID, nsString &aFontName,
+                           gfxFontStyle &aFontStyle,
+                           float aDevPixPerCSSPixel)
+{
+  HDC tdc = GetDC(nullptr);
+  bool status = GetSysFontInfo(tdc, anID, aFontName, aFontStyle);
+  ReleaseDC(nullptr, tdc);
+  // now convert the logical font size from GetSysFontInfo into device pixels for layout
+  aFontStyle.size *= aDevPixPerCSSPixel;
+  return status;
+}
+
+/* virtual */
+char16_t
+nsLookAndFeel::GetPasswordCharacterImpl()
+{
+#define UNICODE_BLACK_CIRCLE_CHAR 0x25cf
+  return UNICODE_BLACK_CIRCLE_CHAR;
+}