forked from mirrors/gecko-dev
		
	All our widgets support it with a constant true. MozReview-Commit-ID: JMEItUsxYWq --HG-- extra : rebase_source : e7e0a3f83001813239338bc5b3895252e1fb3ea6
		
			
				
	
	
		
			856 lines
		
	
	
	
		
			25 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			856 lines
		
	
	
	
		
			25 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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 * License, v. 2.0. If a copy of the MPL was not distributed with this
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 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsLookAndFeel.h"
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#include <windows.h>
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#include <shellapi.h>
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#include "nsStyleConsts.h"
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#include "nsUXThemeData.h"
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#include "nsUXThemeConstants.h"
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#include "WinUtils.h"
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#include "mozilla/Telemetry.h"
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#include "mozilla/WindowsVersion.h"
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#include "gfxFontConstants.h"
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using namespace mozilla;
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using namespace mozilla::widget;
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//static
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LookAndFeel::OperatingSystemVersion
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nsLookAndFeel::GetOperatingSystemVersion()
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{
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  static OperatingSystemVersion version = eOperatingSystemVersion_Unknown;
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  if (version != eOperatingSystemVersion_Unknown) {
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    return version;
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  }
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  if (IsWin10OrLater()) {
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    version = eOperatingSystemVersion_Windows10;
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  } else if (IsWin8OrLater()) {
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    version = eOperatingSystemVersion_Windows8;
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  } else {
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    version = eOperatingSystemVersion_Windows7;
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  }
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  return version;
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}
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static nsresult GetColorFromTheme(nsUXThemeClass cls,
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                           int32_t aPart,
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                           int32_t aState,
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                           int32_t aPropId,
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                           nscolor &aColor)
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{
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  COLORREF color;
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  HRESULT hr = GetThemeColor(nsUXThemeData::GetTheme(cls), aPart, aState, aPropId, &color);
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  if (hr == S_OK)
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  {
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    aColor = COLOREF_2_NSRGB(color);
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    return NS_OK;
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  }
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  return NS_ERROR_FAILURE;
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}
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static int32_t GetSystemParam(long flag, int32_t def)
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{
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    DWORD value;
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    return ::SystemParametersInfo(flag, 0, &value, 0) ? value : def;
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}
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nsLookAndFeel::nsLookAndFeel()
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  : nsXPLookAndFeel()
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  , mUseAccessibilityTheme(0)
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  , mUseDefaultTheme(0)
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  , mNativeThemeId(eWindowsTheme_Generic)
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  , mCaretBlinkTime(-1)
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{
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  mozilla::Telemetry::Accumulate(mozilla::Telemetry::TOUCH_ENABLED_DEVICE,
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                                 WinUtils::IsTouchDeviceSupportPresent());
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}
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nsLookAndFeel::~nsLookAndFeel()
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{
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}
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nsresult
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nsLookAndFeel::NativeGetColor(ColorID aID, nscolor &aColor)
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{
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  nsresult res = NS_OK;
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  int idx;
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  switch (aID) {
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    case eColorID_WindowBackground:
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        idx = COLOR_WINDOW;
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        break;
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    case eColorID_WindowForeground:
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        idx = COLOR_WINDOWTEXT;
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        break;
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    case eColorID_WidgetBackground:
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        idx = COLOR_BTNFACE;
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        break;
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    case eColorID_WidgetForeground:
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        idx = COLOR_BTNTEXT;
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        break;
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    case eColorID_WidgetSelectBackground:
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        idx = COLOR_HIGHLIGHT;
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        break;
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    case eColorID_WidgetSelectForeground:
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        idx = COLOR_HIGHLIGHTTEXT;
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        break;
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    case eColorID_Widget3DHighlight:
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        idx = COLOR_BTNHIGHLIGHT;
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        break;
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    case eColorID_Widget3DShadow:
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        idx = COLOR_BTNSHADOW;
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        break;
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    case eColorID_TextBackground:
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        idx = COLOR_WINDOW;
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        break;
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    case eColorID_TextForeground:
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        idx = COLOR_WINDOWTEXT;
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        break;
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    case eColorID_TextSelectBackground:
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    case eColorID_IMESelectedRawTextBackground:
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    case eColorID_IMESelectedConvertedTextBackground:
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        idx = COLOR_HIGHLIGHT;
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        break;
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    case eColorID_TextSelectForeground:
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    case eColorID_IMESelectedRawTextForeground:
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    case eColorID_IMESelectedConvertedTextForeground:
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        idx = COLOR_HIGHLIGHTTEXT;
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        break;
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    case eColorID_IMERawInputBackground:
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    case eColorID_IMEConvertedTextBackground:
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        aColor = NS_TRANSPARENT;
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        return NS_OK;
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    case eColorID_IMERawInputForeground:
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    case eColorID_IMEConvertedTextForeground:
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        aColor = NS_SAME_AS_FOREGROUND_COLOR;
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        return NS_OK;
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    case eColorID_IMERawInputUnderline:
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    case eColorID_IMEConvertedTextUnderline:
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        aColor = NS_SAME_AS_FOREGROUND_COLOR;
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        return NS_OK;
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    case eColorID_IMESelectedRawTextUnderline:
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    case eColorID_IMESelectedConvertedTextUnderline:
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        aColor = NS_TRANSPARENT;
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        return NS_OK;
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    case eColorID_SpellCheckerUnderline:
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        aColor = NS_RGB(0xff, 0, 0);
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        return NS_OK;
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    // New CSS 2 Color definitions
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    case eColorID_activeborder:
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      idx = COLOR_ACTIVEBORDER;
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      break;
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    case eColorID_activecaption:
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      idx = COLOR_ACTIVECAPTION;
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      break;
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    case eColorID_appworkspace:
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      idx = COLOR_APPWORKSPACE;
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      break;
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    case eColorID_background:
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      idx = COLOR_BACKGROUND;
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      break;
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    case eColorID_buttonface:
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    case eColorID__moz_buttonhoverface:
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      idx = COLOR_BTNFACE;
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      break;
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    case eColorID_buttonhighlight:
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      idx = COLOR_BTNHIGHLIGHT;
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      break;
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    case eColorID_buttonshadow:
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      idx = COLOR_BTNSHADOW;
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      break;
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    case eColorID_buttontext:
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    case eColorID__moz_buttonhovertext:
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      idx = COLOR_BTNTEXT;
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      break;
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    case eColorID_captiontext:
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      idx = COLOR_CAPTIONTEXT;
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      break;
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    case eColorID_graytext:
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      idx = COLOR_GRAYTEXT;
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      break;
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    case eColorID_highlight:
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    case eColorID__moz_html_cellhighlight:
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    case eColorID__moz_menuhover:
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      idx = COLOR_HIGHLIGHT;
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      break;
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    case eColorID__moz_menubarhovertext:
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      if (!IsAppThemed()) {
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        idx = nsUXThemeData::sFlatMenus ?
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                COLOR_HIGHLIGHTTEXT :
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                COLOR_MENUTEXT;
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        break;
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      }
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      // Fall through
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    case eColorID__moz_menuhovertext:
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      if (IsAppThemed()) {
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        res = ::GetColorFromTheme(eUXMenu,
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                                  MENU_POPUPITEM, MPI_HOT, TMT_TEXTCOLOR, aColor);
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        if (NS_SUCCEEDED(res))
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          return res;
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        // fall through to highlight case
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      }
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    case eColorID_highlighttext:
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    case eColorID__moz_html_cellhighlighttext:
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      idx = COLOR_HIGHLIGHTTEXT;
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      break;
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    case eColorID_inactiveborder:
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      idx = COLOR_INACTIVEBORDER;
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      break;
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    case eColorID_inactivecaption:
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      idx = COLOR_INACTIVECAPTION;
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      break;
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    case eColorID_inactivecaptiontext:
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      idx = COLOR_INACTIVECAPTIONTEXT;
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      break;
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    case eColorID_infobackground:
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      idx = COLOR_INFOBK;
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      break;
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    case eColorID_infotext:
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      idx = COLOR_INFOTEXT;
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      break;
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    case eColorID_menu:
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      idx = COLOR_MENU;
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      break;
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    case eColorID_menutext:
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    case eColorID__moz_menubartext:
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      idx = COLOR_MENUTEXT;
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      break;
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    case eColorID_scrollbar:
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      idx = COLOR_SCROLLBAR;
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      break;
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    case eColorID_threeddarkshadow:
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      idx = COLOR_3DDKSHADOW;
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      break;
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    case eColorID_threedface:
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      idx = COLOR_3DFACE;
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      break;
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    case eColorID_threedhighlight:
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      idx = COLOR_3DHIGHLIGHT;
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      break;
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    case eColorID_threedlightshadow:
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      idx = COLOR_3DLIGHT;
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      break;
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    case eColorID_threedshadow:
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      idx = COLOR_3DSHADOW;
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      break;
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    case eColorID_window:
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      idx = COLOR_WINDOW;
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      break;
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    case eColorID_windowframe:
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      idx = COLOR_WINDOWFRAME;
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      break;
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    case eColorID_windowtext:
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      idx = COLOR_WINDOWTEXT;
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      break;
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    case eColorID__moz_eventreerow:
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    case eColorID__moz_oddtreerow:
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    case eColorID__moz_field:
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    case eColorID__moz_combobox:
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      idx = COLOR_WINDOW;
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      break;
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    case eColorID__moz_fieldtext:
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    case eColorID__moz_comboboxtext:
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      idx = COLOR_WINDOWTEXT;
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      break;
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    case eColorID__moz_dialog:
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    case eColorID__moz_cellhighlight:
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      idx = COLOR_3DFACE;
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      break;
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    case eColorID__moz_win_accentcolor:
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      res = GetAccentColor(aColor);
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      if (NS_SUCCEEDED(res)) {
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        return res;
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      }
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      // Seems to be the default color (hardcoded because of bug 1065998)
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      aColor = NS_RGB(158, 158, 158);
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      return NS_OK;
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    case eColorID__moz_win_accentcolortext:
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      res = GetAccentColorText(aColor);
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      if (NS_SUCCEEDED(res)) {
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        return res;
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      }
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      aColor = NS_RGB(0, 0, 0);
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      return NS_OK;
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    case eColorID__moz_win_mediatext:
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      if (IsAppThemed()) {
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        res = ::GetColorFromTheme(eUXMediaToolbar,
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                                  TP_BUTTON, TS_NORMAL, TMT_TEXTCOLOR, aColor);
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        if (NS_SUCCEEDED(res))
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          return res;
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      }
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      // if we've gotten here just return -moz-dialogtext instead
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      idx = COLOR_WINDOWTEXT;
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      break;
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    case eColorID__moz_win_communicationstext:
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      if (IsAppThemed()) {
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        res = ::GetColorFromTheme(eUXCommunicationsToolbar,
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                                  TP_BUTTON, TS_NORMAL, TMT_TEXTCOLOR, aColor);
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        if (NS_SUCCEEDED(res))
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          return res;
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      }
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      // if we've gotten here just return -moz-dialogtext instead
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      idx = COLOR_WINDOWTEXT;
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      break;
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    case eColorID__moz_dialogtext:
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    case eColorID__moz_cellhighlighttext:
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      idx = COLOR_WINDOWTEXT;
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      break;
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    case eColorID__moz_dragtargetzone:
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      idx = COLOR_HIGHLIGHTTEXT;
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      break;
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    case eColorID__moz_buttondefault:
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      idx = COLOR_3DDKSHADOW;
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      break;
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    case eColorID__moz_nativehyperlinktext:
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      idx = COLOR_HOTLIGHT;
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      break;
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    default:
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      NS_WARNING("Unknown color for nsLookAndFeel");
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      idx = COLOR_WINDOW;
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      res = NS_ERROR_FAILURE;
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      break;
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    }
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  DWORD color = ::GetSysColor(idx);
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  aColor = COLOREF_2_NSRGB(color);
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  return res;
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}
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nsresult
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nsLookAndFeel::GetIntImpl(IntID aID, int32_t &aResult)
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{
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  nsresult res = nsXPLookAndFeel::GetIntImpl(aID, aResult);
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  if (NS_SUCCEEDED(res))
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    return res;
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  res = NS_OK;
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  switch (aID) {
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    case eIntID_CaretBlinkTime:
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        // eIntID_CaretBlinkTime is often called by updating editable text 
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        // that has focus. So it should be cached to improve performance.
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        if (mCaretBlinkTime < 0) {
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            mCaretBlinkTime = static_cast<int32_t>(::GetCaretBlinkTime());
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        }
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        aResult = mCaretBlinkTime;
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        break;
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    case eIntID_CaretWidth:
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        aResult = 1;
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        break;
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    case eIntID_ShowCaretDuringSelection:
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        aResult = 0;
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        break;
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    case eIntID_SelectTextfieldsOnKeyFocus:
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        // Select textfield content when focused by kbd
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        // used by EventStateManager::sTextfieldSelectModel
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        aResult = 1;
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        break;
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    case eIntID_SubmenuDelay:
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        // This will default to the Windows' default
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        // (400ms) on error.
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        aResult = GetSystemParam(SPI_GETMENUSHOWDELAY, 400);
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        break;
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    case eIntID_TooltipDelay:
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        aResult = 500;
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        break;
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    case eIntID_MenusCanOverlapOSBar:
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        // we want XUL popups to be able to overlap the task bar.
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        aResult = 1;
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        break;
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    case eIntID_DragThresholdX:
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        // The system metric is the number of pixels at which a drag should
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        // start.  Our look and feel metric is the number of pixels you can
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        // move before starting a drag, so subtract 1.
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        aResult = ::GetSystemMetrics(SM_CXDRAG) - 1;
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        break;
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    case eIntID_DragThresholdY:
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        aResult = ::GetSystemMetrics(SM_CYDRAG) - 1;
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        break;
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    case eIntID_UseAccessibilityTheme:
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        // High contrast is a misnomer under Win32 -- any theme can be used with it,
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        // e.g. normal contrast with large fonts, low contrast, etc.
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        // The high contrast flag really means -- use this theme and don't override it.
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        if (XRE_IsContentProcess()) {
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						|
          // If we're running in the content process, then the parent should
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						|
          // have sent us the accessibility state when nsLookAndFeel
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          // initialized, and stashed it in the mUseAccessibilityTheme cache.
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          aResult = mUseAccessibilityTheme;
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        } else {
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          // Otherwise, we can ask the OS to see if we're using High Contrast
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          // mode.
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          aResult = nsUXThemeData::IsHighContrastOn();
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        }
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        break;
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    case eIntID_ScrollArrowStyle:
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        aResult = eScrollArrowStyle_Single;
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        break;
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						|
    case eIntID_ScrollSliderStyle:
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        aResult = eScrollThumbStyle_Proportional;
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        break;
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						|
    case eIntID_TreeOpenDelay:
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						|
        aResult = 1000;
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        break;
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						|
    case eIntID_TreeCloseDelay:
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        aResult = 0;
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        break;
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						|
    case eIntID_TreeLazyScrollDelay:
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						|
        aResult = 150;
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        break;
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    case eIntID_TreeScrollDelay:
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						|
        aResult = 100;
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        break;
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    case eIntID_TreeScrollLinesMax:
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        aResult = 3;
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        break;
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    case eIntID_WindowsClassic:
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        aResult = !IsAppThemed();
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        break;
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    case eIntID_TouchEnabled:
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        aResult = WinUtils::IsTouchDeviceSupportPresent();
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        break;
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    case eIntID_WindowsDefaultTheme:
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        if (XRE_IsContentProcess()) {
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          aResult = mUseDefaultTheme;
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        } else {
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          aResult = nsUXThemeData::IsDefaultWindowTheme();
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        }
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        break;
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						|
    case eIntID_WindowsThemeIdentifier:
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						|
        if (XRE_IsContentProcess()) {
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          aResult = mNativeThemeId;
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        } else {
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          aResult = nsUXThemeData::GetNativeThemeId();
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        }
 | 
						|
        break;
 | 
						|
 | 
						|
    case eIntID_OperatingSystemVersionIdentifier:
 | 
						|
    {
 | 
						|
        aResult = GetOperatingSystemVersion();
 | 
						|
        break;
 | 
						|
    }
 | 
						|
 | 
						|
    case eIntID_MacGraphiteTheme:
 | 
						|
        aResult = 0;
 | 
						|
        res = NS_ERROR_NOT_IMPLEMENTED;
 | 
						|
        break;
 | 
						|
    case eIntID_DWMCompositor:
 | 
						|
        aResult = nsUXThemeData::CheckForCompositor();
 | 
						|
        break;
 | 
						|
    case eIntID_WindowsAccentColorInTitlebar:
 | 
						|
        {
 | 
						|
          nscolor unused;
 | 
						|
          if (NS_WARN_IF(NS_FAILED(GetAccentColor(unused)))) {
 | 
						|
            aResult = 0;
 | 
						|
            break;
 | 
						|
          }
 | 
						|
 | 
						|
          uint32_t colorPrevalence;
 | 
						|
          nsresult rv = mDwmKey->Open(nsIWindowsRegKey::ROOT_KEY_CURRENT_USER,
 | 
						|
                                      NS_LITERAL_STRING("SOFTWARE\\Microsoft\\Windows\\DWM"),
 | 
						|
                                      nsIWindowsRegKey::ACCESS_QUERY_VALUE);
 | 
						|
          if (NS_WARN_IF(NS_FAILED(rv))) {
 | 
						|
            return rv;
 | 
						|
          }
 | 
						|
 | 
						|
          // The ColorPrevalence value is set to 1 when the "Show color on title bar"
 | 
						|
          // setting in the Color section of Window's Personalization settings is
 | 
						|
          // turned on.
 | 
						|
          aResult =
 | 
						|
            (NS_SUCCEEDED(mDwmKey->ReadIntValue(NS_LITERAL_STRING("ColorPrevalence"),
 | 
						|
                                                &colorPrevalence)) &&
 | 
						|
             colorPrevalence == 1) ? 1 : 0;
 | 
						|
 | 
						|
          mDwmKey->Close();
 | 
						|
        }
 | 
						|
        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_UseOverlayScrollbars:
 | 
						|
        aResult = false;
 | 
						|
        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;
 | 
						|
    case eIntID_ContextMenuOffsetVertical:
 | 
						|
    case eIntID_ContextMenuOffsetHorizontal:
 | 
						|
        aResult = 2;
 | 
						|
        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)
 | 
						|
{
 | 
						|
  const LOGFONTW* ptrLogFont = nullptr;
 | 
						|
  LOGFONTW logFont;
 | 
						|
  NONCLIENTMETRICSW ncm;
 | 
						|
  char16_t name[LF_FACESIZE];
 | 
						|
  bool useShellDlg = false;
 | 
						|
 | 
						|
  // Depending on which stock font we want, there are a couple of
 | 
						|
  // 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;
 | 
						|
 | 
						|
  default:
 | 
						|
    ncm.cbSize = sizeof(NONCLIENTMETRICSW);
 | 
						|
    if (!::SystemParametersInfoW(SPI_GETNONCLIENTMETRICS,
 | 
						|
                                 sizeof(ncm), (PVOID)&ncm, 0))
 | 
						|
      return false;
 | 
						|
 | 
						|
    switch (anID) {
 | 
						|
    case LookAndFeel::eFont_Menu:
 | 
						|
    case LookAndFeel::eFont_PullDownMenu:
 | 
						|
      ptrLogFont = &ncm.lfMenuFont;
 | 
						|
      break;
 | 
						|
    case LookAndFeel::eFont_Caption:
 | 
						|
      ptrLogFont = &ncm.lfCaptionFont;
 | 
						|
      break;
 | 
						|
    case LookAndFeel::eFont_SmallCaption:
 | 
						|
      ptrLogFont = &ncm.lfSmCaptionFont;
 | 
						|
      break;
 | 
						|
    case LookAndFeel::eFont_StatusBar:
 | 
						|
    case LookAndFeel::eFont_Tooltips:
 | 
						|
      ptrLogFont = &ncm.lfStatusFont;
 | 
						|
      break;
 | 
						|
    case LookAndFeel::eFont_Widget:
 | 
						|
    case LookAndFeel::eFont_Dialog:
 | 
						|
    case LookAndFeel::eFont_Button:
 | 
						|
    case LookAndFeel::eFont_Field:
 | 
						|
    case LookAndFeel::eFont_List:
 | 
						|
      // XXX It's not clear to me whether this is exactly the right
 | 
						|
      // set of LookAndFeel values to map to the dialog font; we may
 | 
						|
      // want to add or remove cases here after reviewing the visual
 | 
						|
      // results under various Windows versions.
 | 
						|
      useShellDlg = true;
 | 
						|
      // Fall through so that we can get size from lfMessageFont;
 | 
						|
      // but later we'll use the (virtual) "MS Shell Dlg 2" font name
 | 
						|
      // instead of the LOGFONT's.
 | 
						|
    default:
 | 
						|
      ptrLogFont = &ncm.lfMessageFont;
 | 
						|
      break;
 | 
						|
    }
 | 
						|
    break;
 | 
						|
  }
 | 
						|
 | 
						|
  // Get scaling factor from physical to logical pixels
 | 
						|
  double pixelScale = 1.0 / WinUtils::SystemScaleFactor();
 | 
						|
 | 
						|
  // 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;
 | 
						|
 | 
						|
  if (useShellDlg) {
 | 
						|
    aFontName = NS_LITERAL_STRING("MS Shell Dlg 2");
 | 
						|
  } else {
 | 
						|
    memcpy(name, ptrLogFont->lfFaceName, LF_FACESIZE*sizeof(char16_t));
 | 
						|
    aFontName = name;
 | 
						|
  }
 | 
						|
 | 
						|
  return true;
 | 
						|
}
 | 
						|
 | 
						|
bool
 | 
						|
nsLookAndFeel::GetFontImpl(FontID anID, nsString &aFontName,
 | 
						|
                           gfxFontStyle &aFontStyle,
 | 
						|
                           float aDevPixPerCSSPixel)
 | 
						|
{
 | 
						|
  CachedSystemFont &cacheSlot = mSystemFontCache[anID];
 | 
						|
 | 
						|
  bool status;
 | 
						|
  if (cacheSlot.mCacheValid) {
 | 
						|
    status = cacheSlot.mHaveFont;
 | 
						|
    if (status) {
 | 
						|
      aFontName = cacheSlot.mFontName;
 | 
						|
      aFontStyle = cacheSlot.mFontStyle;
 | 
						|
    }
 | 
						|
  } else {
 | 
						|
    HDC tdc = GetDC(nullptr);
 | 
						|
    status = GetSysFontInfo(tdc, anID, aFontName, aFontStyle);
 | 
						|
    ReleaseDC(nullptr, tdc);
 | 
						|
 | 
						|
    cacheSlot.mCacheValid = true;
 | 
						|
    cacheSlot.mHaveFont = status;
 | 
						|
    if (status) {
 | 
						|
      cacheSlot.mFontName = aFontName;
 | 
						|
      cacheSlot.mFontStyle = aFontStyle;
 | 
						|
    }
 | 
						|
  }
 | 
						|
  // now convert the logical font size from GetSysFontInfo into device pixels for layout
 | 
						|
  aFontStyle.size *= aDevPixPerCSSPixel;
 | 
						|
  return status;
 | 
						|
}
 | 
						|
 | 
						|
/* virtual */ void
 | 
						|
nsLookAndFeel::RefreshImpl()
 | 
						|
{
 | 
						|
  nsXPLookAndFeel::RefreshImpl();
 | 
						|
 | 
						|
  for (auto e = mSystemFontCache.begin(), end = mSystemFontCache.end();
 | 
						|
       e != end; ++e) {
 | 
						|
    e->mCacheValid = false;
 | 
						|
  }
 | 
						|
  mCaretBlinkTime = -1;
 | 
						|
}
 | 
						|
 | 
						|
/* virtual */
 | 
						|
char16_t
 | 
						|
nsLookAndFeel::GetPasswordCharacterImpl()
 | 
						|
{
 | 
						|
#define UNICODE_BLACK_CIRCLE_CHAR 0x25cf
 | 
						|
  return UNICODE_BLACK_CIRCLE_CHAR;
 | 
						|
}
 | 
						|
 | 
						|
nsTArray<LookAndFeelInt>
 | 
						|
nsLookAndFeel::GetIntCacheImpl()
 | 
						|
{
 | 
						|
  nsTArray<LookAndFeelInt> lookAndFeelIntCache =
 | 
						|
    nsXPLookAndFeel::GetIntCacheImpl();
 | 
						|
 | 
						|
  LookAndFeelInt lafInt;
 | 
						|
  lafInt.id = eIntID_UseAccessibilityTheme;
 | 
						|
  lafInt.value = GetInt(eIntID_UseAccessibilityTheme);
 | 
						|
  lookAndFeelIntCache.AppendElement(lafInt);
 | 
						|
 | 
						|
  lafInt.id = eIntID_WindowsDefaultTheme;
 | 
						|
  lafInt.value = GetInt(eIntID_WindowsDefaultTheme);
 | 
						|
  lookAndFeelIntCache.AppendElement(lafInt);
 | 
						|
 | 
						|
  lafInt.id = eIntID_WindowsThemeIdentifier;
 | 
						|
  lafInt.value = GetInt(eIntID_WindowsThemeIdentifier);
 | 
						|
  lookAndFeelIntCache.AppendElement(lafInt);
 | 
						|
 | 
						|
  return lookAndFeelIntCache;
 | 
						|
}
 | 
						|
 | 
						|
void
 | 
						|
nsLookAndFeel::SetIntCacheImpl(const nsTArray<LookAndFeelInt>& aLookAndFeelIntCache)
 | 
						|
{
 | 
						|
  for (auto entry : aLookAndFeelIntCache) {
 | 
						|
    switch (entry.id) {
 | 
						|
      case eIntID_UseAccessibilityTheme:
 | 
						|
      mUseAccessibilityTheme = entry.value;
 | 
						|
      break;
 | 
						|
      case eIntID_WindowsDefaultTheme:
 | 
						|
      mUseDefaultTheme = entry.value;
 | 
						|
      break;
 | 
						|
      case eIntID_WindowsThemeIdentifier:
 | 
						|
      mNativeThemeId = entry.value;
 | 
						|
      break;
 | 
						|
    }
 | 
						|
  }
 | 
						|
}
 | 
						|
 | 
						|
/* static */ nsresult
 | 
						|
nsLookAndFeel::GetAccentColor(nscolor& aColor)
 | 
						|
{
 | 
						|
  nsresult rv;
 | 
						|
 | 
						|
  if (!mDwmKey) {
 | 
						|
    mDwmKey = do_CreateInstance("@mozilla.org/windows-registry-key;1", &rv);
 | 
						|
    if (NS_WARN_IF(NS_FAILED(rv))) {
 | 
						|
      return rv;
 | 
						|
    }
 | 
						|
  }
 | 
						|
 | 
						|
  rv = mDwmKey->Open(nsIWindowsRegKey::ROOT_KEY_CURRENT_USER,
 | 
						|
                     NS_LITERAL_STRING("SOFTWARE\\Microsoft\\Windows\\DWM"),
 | 
						|
                     nsIWindowsRegKey::ACCESS_QUERY_VALUE);
 | 
						|
  if (NS_WARN_IF(NS_FAILED(rv))) {
 | 
						|
    return rv;
 | 
						|
  }
 | 
						|
 | 
						|
  uint32_t accentColor;
 | 
						|
  if (NS_SUCCEEDED(mDwmKey->ReadIntValue(NS_LITERAL_STRING("AccentColor"), &accentColor))) {
 | 
						|
    // The order of the color components in the DWORD stored in the registry
 | 
						|
    // happens to be the same order as we store the components in nscolor
 | 
						|
    // so we can just assign directly here.
 | 
						|
    aColor = accentColor;
 | 
						|
    rv = NS_OK;
 | 
						|
  } else {
 | 
						|
    rv = NS_ERROR_NOT_AVAILABLE;
 | 
						|
  }
 | 
						|
 | 
						|
  mDwmKey->Close();
 | 
						|
 | 
						|
  return rv;
 | 
						|
}
 | 
						|
 | 
						|
/* static */ nsresult
 | 
						|
nsLookAndFeel::GetAccentColorText(nscolor& aColor)
 | 
						|
{
 | 
						|
  nscolor accentColor;
 | 
						|
  nsresult rv = GetAccentColor(accentColor);
 | 
						|
  if (NS_WARN_IF(NS_FAILED(rv))) {
 | 
						|
    return rv;
 | 
						|
  }
 | 
						|
 | 
						|
  // We want the color that we return for text that will be drawn over
 | 
						|
  // a background that has the accent color to have good contrast with
 | 
						|
  // the accent color.  Windows itself uses either white or black text
 | 
						|
  // depending on how light or dark the accent color is.  We do the same
 | 
						|
  // here based on the luminance of the accent color with a threshhold
 | 
						|
  // value.  This algorithm should match what Windows does.  It comes from:
 | 
						|
  //
 | 
						|
  // https://docs.microsoft.com/en-us/windows/uwp/style/color
 | 
						|
 | 
						|
  float luminance = (NS_GET_R(accentColor) * 2 +
 | 
						|
                     NS_GET_G(accentColor) * 5 +
 | 
						|
                     NS_GET_B(accentColor)) / 8;
 | 
						|
 | 
						|
  aColor = (luminance <= 128) ? NS_RGB(255, 255, 255) : NS_RGB(0, 0, 0);
 | 
						|
 | 
						|
  return NS_OK;
 | 
						|
}
 |