Source code

Revision control

Other Tools

/* -*- 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 <stdint.h>
#include <windows.h>
#include <shellapi.h>
#include "nsStyleConsts.h"
#include "nsUXThemeData.h"
#include "nsUXThemeConstants.h"
#include "nsWindowsHelpers.h"
#include "WinUtils.h"
#include "mozilla/FontPropertyTypes.h"
#include "mozilla/Telemetry.h"
#include "mozilla/WindowsVersion.h"
#include "gfxFontConstants.h"
#include "gfxWindowsPlatform.h"
using namespace mozilla;
using namespace mozilla::widget;
// static
LookAndFeel::OperatingSystemVersion nsLookAndFeel::GetOperatingSystemVersion() {
static OperatingSystemVersion version = OperatingSystemVersion::Unknown;
if (version != OperatingSystemVersion::Unknown) {
return version;
}
if (IsWin10OrLater()) {
version = OperatingSystemVersion::Windows10;
} else if (IsWin8OrLater()) {
version = OperatingSystemVersion::Windows8;
} else {
version = OperatingSystemVersion::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;
}
static nsresult SystemWantsDarkTheme(int32_t& darkThemeEnabled) {
if (!IsWin10OrLater()) {
darkThemeEnabled = 0;
return NS_OK;
}
nsresult rv = NS_OK;
nsCOMPtr<nsIWindowsRegKey> personalizeKey =
do_CreateInstance("@mozilla.org/windows-registry-key;1", &rv);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
rv = personalizeKey->Open(
nsIWindowsRegKey::ROOT_KEY_CURRENT_USER,
nsLiteralString(
u"SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Themes\\Personalize"),
nsIWindowsRegKey::ACCESS_QUERY_VALUE);
if (NS_FAILED(rv)) {
return rv;
}
uint32_t lightThemeEnabled;
rv =
personalizeKey->ReadIntValue(u"AppsUseLightTheme"_ns, &lightThemeEnabled);
if (NS_SUCCEEDED(rv)) {
darkThemeEnabled = !lightThemeEnabled;
}
return rv;
}
nsLookAndFeel::nsLookAndFeel()
: nsXPLookAndFeel(),
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() {
mInitialized = false; // Fetch system colors next time they're used.
nsXPLookAndFeel::RefreshImpl();
}
nsresult nsLookAndFeel::NativeGetColor(ColorID aID, ColorScheme aScheme,
nscolor& aColor) {
EnsureInit();
if (aScheme == ColorScheme::Dark) {
if (auto color = GenericDarkColor(aID)) {
aColor = *color;
return NS_OK;
}
}
nsresult res = NS_OK;
int idx;
switch (aID) {
case ColorID::WindowBackground:
idx = COLOR_WINDOW;
break;
case ColorID::WindowForeground:
idx = COLOR_WINDOWTEXT;
break;
case ColorID::WidgetBackground:
idx = COLOR_BTNFACE;
break;
case ColorID::WidgetForeground:
idx = COLOR_BTNTEXT;
break;
case ColorID::WidgetSelectBackground:
idx = COLOR_HIGHLIGHT;
break;
case ColorID::WidgetSelectForeground:
idx = COLOR_HIGHLIGHTTEXT;
break;
case ColorID::Widget3DHighlight:
idx = COLOR_BTNHIGHLIGHT;
break;
case ColorID::Widget3DShadow:
idx = COLOR_BTNSHADOW;
break;
case ColorID::TextBackground:
idx = COLOR_WINDOW;
break;
case ColorID::TextForeground:
idx = COLOR_WINDOWTEXT;
break;
case ColorID::IMERawInputBackground:
case ColorID::IMEConvertedTextBackground:
aColor = NS_TRANSPARENT;
return NS_OK;
case ColorID::IMERawInputForeground:
case ColorID::IMEConvertedTextForeground:
aColor = NS_SAME_AS_FOREGROUND_COLOR;
return NS_OK;
case ColorID::IMERawInputUnderline:
case ColorID::IMEConvertedTextUnderline:
aColor = NS_SAME_AS_FOREGROUND_COLOR;
return NS_OK;
case ColorID::IMESelectedRawTextUnderline:
case ColorID::IMESelectedConvertedTextUnderline:
aColor = NS_TRANSPARENT;
return NS_OK;
case ColorID::SpellCheckerUnderline:
aColor = NS_RGB(0xff, 0, 0);
return NS_OK;
// New CSS 2 Color definitions
case ColorID::Activeborder:
idx = COLOR_ACTIVEBORDER;
break;
case ColorID::Activecaption:
idx = COLOR_ACTIVECAPTION;
break;
case ColorID::Appworkspace:
idx = COLOR_APPWORKSPACE;
break;
case ColorID::Background:
idx = COLOR_BACKGROUND;
break;
case ColorID::Buttonface:
case ColorID::MozButtonhoverface:
case ColorID::MozButtonactiveface:
case ColorID::MozButtondisabledface:
idx = COLOR_BTNFACE;
break;
case ColorID::Buttonhighlight:
idx = COLOR_BTNHIGHLIGHT;
break;
case ColorID::Buttonshadow:
idx = COLOR_BTNSHADOW;
break;
case ColorID::Buttontext:
case ColorID::MozButtonhovertext:
case ColorID::MozButtonactivetext:
idx = COLOR_BTNTEXT;
break;
case ColorID::Captiontext:
idx = COLOR_CAPTIONTEXT;
break;
case ColorID::MozCellhighlighttext:
aColor = NS_RGB(0, 0, 0);
return NS_OK;
case ColorID::MozCellhighlight:
aColor = NS_RGB(206, 206, 206);
return NS_OK;
case ColorID::Graytext:
idx = COLOR_GRAYTEXT;
break;
case ColorID::Highlight:
case ColorID::Selecteditem:
case ColorID::MozMenuhover:
case ColorID::IMESelectedRawTextBackground:
case ColorID::IMESelectedConvertedTextBackground:
idx = COLOR_HIGHLIGHT;
break;
case ColorID::MozMenubarhovertext:
if (!nsUXThemeData::IsAppThemed()) {
idx = nsUXThemeData::AreFlatMenusEnabled() ? COLOR_HIGHLIGHTTEXT
: COLOR_MENUTEXT;
break;
}
// Fall through
case ColorID::MozMenuhovertext:
if (mHasColorMenuHoverText) {
aColor = mColorMenuHoverText;
return NS_OK;
}
// Fall through
case ColorID::Highlighttext:
case ColorID::Selecteditemtext:
case ColorID::IMESelectedRawTextForeground:
case ColorID::IMESelectedConvertedTextForeground:
idx = COLOR_HIGHLIGHTTEXT;
break;
case ColorID::Inactiveborder:
idx = COLOR_INACTIVEBORDER;
break;
case ColorID::Inactivecaption:
idx = COLOR_INACTIVECAPTION;
break;
case ColorID::Inactivecaptiontext:
idx = COLOR_INACTIVECAPTIONTEXT;
break;
case ColorID::Infobackground:
idx = COLOR_INFOBK;
break;
case ColorID::Infotext:
idx = COLOR_INFOTEXT;
break;
case ColorID::Menu:
idx = COLOR_MENU;
break;
case ColorID::Menutext:
case ColorID::MozMenubartext:
idx = COLOR_MENUTEXT;
break;
case ColorID::Scrollbar:
idx = COLOR_SCROLLBAR;
break;
case ColorID::Threeddarkshadow:
idx = COLOR_3DDKSHADOW;
break;
case ColorID::Threedface:
idx = COLOR_3DFACE;
break;
case ColorID::Threedhighlight:
idx = COLOR_3DHIGHLIGHT;
break;
case ColorID::Threedlightshadow:
case ColorID::MozDisabledfield:
idx = COLOR_3DLIGHT;
break;
case ColorID::Threedshadow:
idx = COLOR_3DSHADOW;
break;
case ColorID::Window:
idx = COLOR_WINDOW;
break;
case ColorID::Windowframe:
idx = COLOR_WINDOWFRAME;
break;
case ColorID::Windowtext:
idx = COLOR_WINDOWTEXT;
break;
case ColorID::MozEventreerow:
case ColorID::MozOddtreerow:
case ColorID::Field:
case ColorID::MozCombobox:
idx = COLOR_WINDOW;
break;
case ColorID::Fieldtext:
case ColorID::MozComboboxtext:
idx = COLOR_WINDOWTEXT;
break;
case ColorID::MozDialog:
idx = COLOR_3DFACE;
break;
case ColorID::MozAccentColor:
if (mHasColorAccent) {
aColor = mColorAccent;
} else {
// Seems to be the default color (hardcoded because of bug 1065998)
aColor = NS_RGB(0, 120, 215);
}
return NS_OK;
case ColorID::MozAccentColorForeground:
if (mHasColorAccentText) {
aColor = mColorAccentText;
} else {
aColor = NS_RGB(255, 255, 255);
}
return NS_OK;
case ColorID::MozWinMediatext:
if (mHasColorMediaText) {
aColor = mColorMediaText;
return NS_OK;
}
// if we've gotten here just return -moz-dialogtext instead
idx = COLOR_WINDOWTEXT;
break;
case ColorID::MozWinCommunicationstext:
if (mHasColorCommunicationsText) {
aColor = mColorCommunicationsText;
return NS_OK;
}
// if we've gotten here just return -moz-dialogtext instead
idx = COLOR_WINDOWTEXT;
break;
case ColorID::MozDialogtext:
case ColorID::MozColheadertext:
case ColorID::MozColheaderhovertext:
idx = COLOR_WINDOWTEXT;
break;
case ColorID::MozDragtargetzone:
idx = COLOR_HIGHLIGHTTEXT;
break;
case ColorID::MozButtondefault:
idx = COLOR_3DDKSHADOW;
break;
case ColorID::MozNativehyperlinktext:
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::NativeGetInt(IntID aID, int32_t& aResult) {
nsresult res = NS_OK;
switch (aID) {
case IntID::ScrollButtonLeftMouseButtonAction:
aResult = 0;
break;
case IntID::ScrollButtonMiddleMouseButtonAction:
case IntID::ScrollButtonRightMouseButtonAction:
aResult = 3;
break;
case IntID::CaretBlinkTime:
aResult = static_cast<int32_t>(::GetCaretBlinkTime());
break;
case IntID::CaretBlinkCount: {
int32_t timeout = GetSystemParam(SPI_GETCARETTIMEOUT, 5000);
auto blinkTime = ::GetCaretBlinkTime();
if (timeout <= 0 || blinkTime <= 0) {
aResult = -1;
break;
}
// 2 * blinkTime because this integer is a full blink cycle.
aResult = std::ceil(float(timeout) / (2.0f * float(blinkTime)));
break;
}
case IntID::CaretWidth:
aResult = 1;
break;
case IntID::ShowCaretDuringSelection:
aResult = 0;
break;
case IntID::SelectTextfieldsOnKeyFocus:
// Select textfield content when focused by kbd
// used by EventStateManager::sTextfieldSelectModel
aResult = 1;
break;
case IntID::SubmenuDelay:
// This will default to the Windows' default
// (400ms) on error.
aResult = GetSystemParam(SPI_GETMENUSHOWDELAY, 400);
break;
case IntID::TooltipDelay:
aResult = 500;
break;
case IntID::MenusCanOverlapOSBar:
// we want XUL popups to be able to overlap the task bar.
aResult = 1;
break;
case IntID::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 IntID::DragThresholdY:
aResult = ::GetSystemMetrics(SM_CYDRAG) - 1;
break;
case IntID::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 IntID::ScrollArrowStyle:
aResult = eScrollArrowStyle_Single;
break;
case IntID::ScrollSliderStyle:
aResult = eScrollThumbStyle_Proportional;
break;
case IntID::TreeOpenDelay:
aResult = 1000;
break;
case IntID::TreeCloseDelay:
aResult = 0;
break;
case IntID::TreeLazyScrollDelay:
aResult = 150;
break;
case IntID::TreeScrollDelay:
aResult = 100;
break;
case IntID::TreeScrollLinesMax:
aResult = 3;
break;
case IntID::WindowsClassic:
aResult = !nsUXThemeData::IsAppThemed();
break;
case IntID::WindowsDefaultTheme:
aResult = nsUXThemeData::IsDefaultWindowTheme();
break;
case IntID::OperatingSystemVersionIdentifier: {
aResult = int32_t(GetOperatingSystemVersion());
break;
}
case IntID::DWMCompositor:
aResult = gfxWindowsPlatform::GetPlatform()->DwmCompositionEnabled();
break;
case IntID::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,
u"SOFTWARE\\Microsoft\\Windows\\DWM"_ns,
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(u"ColorPrevalence"_ns,
&colorPrevalence)) &&
colorPrevalence == 1)
? 1
: 0;
mDwmKey->Close();
} break;
case IntID::WindowsGlass:
// Aero Glass is only available prior to Windows 8 when DWM is used.
aResult = (gfxWindowsPlatform::GetPlatform()->DwmCompositionEnabled() &&
!IsWin8OrLater());
break;
case IntID::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 IntID::IMERawInputUnderlineStyle:
case IntID::IMEConvertedTextUnderlineStyle:
aResult = NS_STYLE_TEXT_DECORATION_STYLE_DASHED;
break;
case IntID::IMESelectedRawTextUnderlineStyle:
case IntID::IMESelectedConvertedTextUnderline:
aResult = NS_STYLE_TEXT_DECORATION_STYLE_NONE;
break;
case IntID::SpellCheckerUnderlineStyle:
aResult = NS_STYLE_TEXT_DECORATION_STYLE_WAVY;
break;
case IntID::ScrollbarButtonAutoRepeatBehavior:
aResult = 0;
break;
case IntID::SwipeAnimationEnabled:
aResult = 0;
break;
case IntID::UseOverlayScrollbars:
aResult = false;
break;
case IntID::AllowOverlayScrollbarsOverlap:
aResult = 0;
break;
case IntID::ScrollbarDisplayOnMouseMove:
aResult = 1;
break;
case IntID::ScrollbarFadeBeginDelay:
aResult = 2500;
break;
case IntID::ScrollbarFadeDuration:
aResult = 350;
break;
case IntID::ContextMenuOffsetVertical:
case IntID::ContextMenuOffsetHorizontal:
aResult = 2;
break;
case IntID::SystemUsesDarkTheme:
res = SystemWantsDarkTheme(aResult);
break;
case IntID::SystemVerticalScrollbarWidth:
aResult = WinUtils::GetSystemMetricsForDpi(SM_CXVSCROLL, 96);
break;
case IntID::SystemHorizontalScrollbarHeight:
aResult = WinUtils::GetSystemMetricsForDpi(SM_CXHSCROLL, 96);
break;
case IntID::PrefersReducedMotion: {
BOOL enableAnimation = TRUE;
::SystemParametersInfoW(SPI_GETCLIENTAREAANIMATION, 0, &enableAnimation,
0);
aResult = enableAnimation ? 0 : 1;
break;
}
case IntID::PrimaryPointerCapabilities: {
aResult = static_cast<int32_t>(
widget::WinUtils::GetPrimaryPointerCapabilities());
break;
}
case IntID::AllPointerCapabilities: {
aResult =
static_cast<int32_t>(widget::WinUtils::GetAllPointerCapabilities());
break;
}
case IntID::TouchDeviceSupportPresent:
aResult = WinUtils::IsTouchDeviceSupportPresent() ? 1 : 0;
break;
default:
aResult = 0;
res = NS_ERROR_FAILURE;
}
return res;
}
nsresult nsLookAndFeel::NativeGetFloat(FloatID aID, float& aResult) {
nsresult res = NS_OK;
switch (aID) {
case FloatID::IMEUnderlineRelativeSize:
aResult = 1.0f;
break;
case FloatID::SpellCheckerUnderlineRelativeSize:
aResult = 1.0f;
break;
default:
aResult = -1.0;
res = NS_ERROR_FAILURE;
}
return res;
}
LookAndFeelFont nsLookAndFeel::GetLookAndFeelFontInternal(
const LOGFONTW& aLogFont, bool aUseShellDlg) {
LookAndFeelFont result{};
result.haveFont() = false;
// 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 = -aLogFont.lfHeight;
if (pixelHeight < 0) {
nsAutoFont hFont(::CreateFontIndirectW(&aLogFont));
if (!hFont) {
return result;
}
nsAutoHDC dc(::GetDC(nullptr));
HGDIOBJ hObject = ::SelectObject(dc, hFont);
TEXTMETRIC tm;
::GetTextMetrics(dc, &tm);
::SelectObject(dc, hObject);
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;
}
result.haveFont() = true;
if (aUseShellDlg) {
result.name() = u"MS Shell Dlg 2"_ns;
} else {
result.name() = aLogFont.lfFaceName;
}
result.size() = pixelHeight;
result.italic() = !!aLogFont.lfItalic;
// FIXME: Other weights?
result.weight() = ((aLogFont.lfWeight == FW_BOLD) ? FontWeight::Bold()
: FontWeight::Normal())
.ToFloat();
return result;
}
LookAndFeelFont nsLookAndFeel::GetLookAndFeelFont(LookAndFeel::FontID anID) {
LookAndFeelFont result{};
result.haveFont() = false;
// FontID::Icon is handled differently than the others
if (anID == LookAndFeel::FontID::Icon) {
LOGFONTW logFont;
if (::SystemParametersInfoW(SPI_GETICONTITLELOGFONT, sizeof(logFont),
(PVOID)&logFont, 0)) {
result = GetLookAndFeelFontInternal(logFont, false);
}
return result;
}
NONCLIENTMETRICSW ncm;
ncm.cbSize = sizeof(NONCLIENTMETRICSW);
if (!::SystemParametersInfoW(SPI_GETNONCLIENTMETRICS, sizeof(ncm),
(PVOID)&ncm, 0)) {
return result;
}
switch (anID) {
case LookAndFeel::FontID::Menu:
case LookAndFeel::FontID::MozPullDownMenu:
result = GetLookAndFeelFontInternal(ncm.lfMenuFont, false);
break;
case LookAndFeel::FontID::Caption:
result = GetLookAndFeelFontInternal(ncm.lfCaptionFont, false);
break;
case LookAndFeel::FontID::SmallCaption:
result = GetLookAndFeelFontInternal(ncm.lfSmCaptionFont, false);
break;
case LookAndFeel::FontID::StatusBar:
result = GetLookAndFeelFontInternal(ncm.lfStatusFont, false);
break;
case LookAndFeel::FontID::MozDialog:
case LookAndFeel::FontID::MozButton:
case LookAndFeel::FontID::MozField:
case LookAndFeel::FontID::MozList:
// 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.
result = GetLookAndFeelFontInternal(ncm.lfMessageFont, true);
break;
default:
result = GetLookAndFeelFontInternal(ncm.lfMessageFont, false);
break;
}
return result;
}
bool nsLookAndFeel::NativeGetFont(LookAndFeel::FontID anID, nsString& aFontName,
gfxFontStyle& aFontStyle) {
LookAndFeelFont font = GetLookAndFeelFont(anID);
return LookAndFeelFontToStyle(font, aFontName, aFontStyle);
}
/* virtual */
char16_t nsLookAndFeel::GetPasswordCharacterImpl() {
#define UNICODE_BLACK_CIRCLE_CHAR 0x25cf
return UNICODE_BLACK_CIRCLE_CHAR;
}
/* 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,
u"SOFTWARE\\Microsoft\\Windows\\DWM"_ns,
nsIWindowsRegKey::ACCESS_QUERY_VALUE);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
uint32_t accentColor;
if (NS_SUCCEEDED(mDwmKey->ReadIntValue(u"AccentColor"_ns, &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:
//
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 (nsUXThemeData::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);
}
RecordTelemetry();
}