/* -*- 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 "WinUtils.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 (IsWin10OrLater()) {
version = eOperatingSystemVersion_Windows10;
} else if (IsWin8OrLater()) {
version = eOperatingSystemVersion_Windows8;
} else {
version = eOperatingSystemVersion_Windows7;
}
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;
}
nsLookAndFeel::nsLookAndFeel()
: nsXPLookAndFeel(),
mUseAccessibilityTheme(0),
mUseDefaultTheme(0),
mNativeThemeId(eWindowsTheme_Generic),
mCaretBlinkTime(-1),
mHasColorMenuHoverText(false),
mHasColorAccent(false),
mHasColorAccentText(false),
mHasColorMediaText(false),
mHasColorCommunicationsText(false),
mInitialized(false) {
mozilla::Telemetry::Accumulate(mozilla::Telemetry::TOUCH_ENABLED_DEVICE,
WinUtils::IsTouchDeviceSupportPresent());
}
nsLookAndFeel::~nsLookAndFeel() {}
void nsLookAndFeel::NativeInit() { EnsureInit(); }
/* virtual */ void nsLookAndFeel::RefreshImpl() {
nsXPLookAndFeel::RefreshImpl();
for (auto e = mSystemFontCache.begin(), end = mSystemFontCache.end();
e != end; ++e) {
e->mCacheValid = false;
}
mCaretBlinkTime = -1;
mInitialized = false;
}
nsresult nsLookAndFeel::NativeGetColor(ColorID aID, nscolor &aColor) {
EnsureInit();
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 (!IsAppThemed()) {
idx = nsUXThemeData::sFlatMenus ? COLOR_HIGHLIGHTTEXT : COLOR_MENUTEXT;
break;
}
// Fall through
case eColorID__moz_menuhovertext:
if (mHasColorMenuHoverText) {
aColor = mColorMenuHoverText;
return NS_OK;
}
// Fall through
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_accentcolor:
if (mHasColorAccent) {
aColor = mColorAccent;
} else {
// Seems to be the default color (hardcoded because of bug 1065998)
aColor = NS_RGB(158, 158, 158);
}
return NS_OK;
case eColorID__moz_win_accentcolortext:
if (mHasColorAccentText) {
aColor = mColorAccentText;
} else {
aColor = NS_RGB(0, 0, 0);
}
return NS_OK;
case eColorID__moz_win_mediatext:
if (mHasColorMediaText) {
aColor = mColorMediaText;
return NS_OK;
}
// if we've gotten here just return -moz-dialogtext instead
idx = COLOR_WINDOWTEXT;
break;
case eColorID__moz_win_communicationstext:
if (mHasColorCommunicationsText) {
aColor = mColorCommunicationsText;
return NS_OK;
}
// 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:
NS_WARNING("Unknown color for nsLookAndFeel");
idx = COLOR_WINDOW;
res = NS_ERROR_FAILURE;
break;
}
aColor = GetColorForSysColorIndex(idx);
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:
// eIntID_CaretBlinkTime is often called by updating editable text
// that has focus. So it should be cached to improve performance.
if (mCaretBlinkTime < 0) {
mCaretBlinkTime = static_cast<int32_t>(::GetCaretBlinkTime());
}
aResult = mCaretBlinkTime;
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.
if (XRE_IsContentProcess()) {
// If we're running in the content process, then the parent should
// have sent us the accessibility state when nsLookAndFeel
// initialized, and stashed it in the mUseAccessibilityTheme cache.
aResult = mUseAccessibilityTheme;
} else {
// Otherwise, we can ask the OS to see if we're using High Contrast
// mode.
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 = WinUtils::IsTouchDeviceSupportPresent();
break;
case eIntID_WindowsDefaultTheme:
if (XRE_IsContentProcess()) {
aResult = mUseDefaultTheme;
} else {
aResult = nsUXThemeData::IsDefaultWindowTheme();
}
break;
case eIntID_WindowsThemeIdentifier:
if (XRE_IsContentProcess()) {
aResult = mNativeThemeId;
} else {
aResult = nsUXThemeData::GetNativeThemeId();
}
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 */
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;
}
nscolor nsLookAndFeel::GetColorForSysColorIndex(int index) {
MOZ_ASSERT(index >= SYS_COLOR_MIN && index <= SYS_COLOR_MAX);
return mSysColorTable[index - SYS_COLOR_MIN];
}
void nsLookAndFeel::EnsureInit() {
if (mInitialized) {
return;
}
mInitialized = true;
nsresult res;
res = GetAccentColor(mColorAccent);
mHasColorAccent = NS_SUCCEEDED(res);
res = GetAccentColorText(mColorAccentText);
mHasColorAccentText = NS_SUCCEEDED(res);
if (IsAppThemed()) {
res = ::GetColorFromTheme(eUXMenu, MENU_POPUPITEM, MPI_HOT, TMT_TEXTCOLOR,
mColorMenuHoverText);
mHasColorMenuHoverText = NS_SUCCEEDED(res);
res = ::GetColorFromTheme(eUXMediaToolbar, TP_BUTTON, TS_NORMAL,
TMT_TEXTCOLOR, mColorMediaText);
mHasColorMediaText = NS_SUCCEEDED(res);
res = ::GetColorFromTheme(eUXCommunicationsToolbar, TP_BUTTON, TS_NORMAL,
TMT_TEXTCOLOR, mColorCommunicationsText);
mHasColorCommunicationsText = NS_SUCCEEDED(res);
}
// Fill out the sys color table.
for (int i = SYS_COLOR_MIN; i <= SYS_COLOR_MAX; ++i) {
DWORD color = ::GetSysColor(i);
mSysColorTable[i - SYS_COLOR_MIN] = COLOREF_2_NSRGB(color);
}
}