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-rw-r--r--widget/windows/nsLookAndFeel.cpp916
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diff --git a/widget/windows/nsLookAndFeel.cpp b/widget/windows/nsLookAndFeel.cpp
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+++ b/widget/windows/nsLookAndFeel.cpp
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+/* -*- 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 "WindowsUIUtils.h"
+#include "mozilla/FontPropertyTypes.h"
+#include "mozilla/Telemetry.h"
+#include "mozilla/widget/WinRegistry.h"
+
+using namespace mozilla;
+using namespace mozilla::widget;
+
+static Maybe<nscolor> GetColorFromTheme(nsUXThemeClass cls, int32_t aPart,
+ int32_t aState, int32_t aPropId) {
+ COLORREF color;
+ HRESULT hr = GetThemeColor(nsUXThemeData::GetTheme(cls), aPart, aState,
+ aPropId, &color);
+ if (hr == S_OK) {
+ return Some(COLOREF_2_NSRGB(color));
+ }
+ return Nothing();
+}
+
+static int32_t GetSystemParam(long flag, int32_t def) {
+ DWORD value;
+ return ::SystemParametersInfo(flag, 0, &value, 0) ? value : def;
+}
+
+static bool SystemWantsDarkTheme() {
+ if (nsUXThemeData::IsHighContrastOn()) {
+ return LookAndFeel::IsDarkColor(
+ LookAndFeel::Color(StyleSystemColor::Window, ColorScheme::Light,
+ LookAndFeel::UseStandins::No));
+ }
+
+ WinRegistry::Key key(
+ HKEY_CURRENT_USER,
+ u"SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Themes\\Personalize"_ns,
+ WinRegistry::KeyMode::QueryValue);
+ if (NS_WARN_IF(!key)) {
+ return false;
+ }
+ uint32_t light = key.GetValueAsDword(u"AppsUseLightTheme"_ns).valueOr(1);
+ return !light;
+}
+
+uint32_t nsLookAndFeel::SystemColorFilter() {
+ if (NS_WARN_IF(!mColorFilterWatcher)) {
+ return 0;
+ }
+
+ const auto& key = mColorFilterWatcher->GetKey();
+ if (!key.GetValueAsDword(u"Active"_ns).valueOr(0)) {
+ return 0;
+ }
+ return key.GetValueAsDword(u"FilterType"_ns).valueOr(0);
+}
+
+nsLookAndFeel::nsLookAndFeel() {
+ mozilla::Telemetry::Accumulate(mozilla::Telemetry::TOUCH_ENABLED_DEVICE,
+ WinUtils::IsTouchDeviceSupportPresent());
+}
+
+nsLookAndFeel::~nsLookAndFeel() = default;
+
+void nsLookAndFeel::NativeInit() { EnsureInit(); }
+
+/* virtual */
+void nsLookAndFeel::RefreshImpl() {
+ mInitialized = false; // Fetch system colors next time they're used.
+ nsXPLookAndFeel::RefreshImpl();
+}
+
+static bool UseNonNativeMenuColors(ColorScheme aScheme) {
+ return !LookAndFeel::GetInt(LookAndFeel::IntID::UseAccessibilityTheme) ||
+ aScheme == ColorScheme::Dark;
+}
+
+nsresult nsLookAndFeel::NativeGetColor(ColorID aID, ColorScheme aScheme,
+ nscolor& aColor) {
+ EnsureInit();
+
+ auto IsHighlightColor = [&] {
+ switch (aID) {
+ case ColorID::MozMenuhover:
+ return !UseNonNativeMenuColors(aScheme);
+ case ColorID::Highlight:
+ case ColorID::Selecteditem:
+ // We prefer the generic dark selection color if we don't have an
+ // explicit one.
+ return aScheme != ColorScheme::Dark || mDarkHighlight;
+ case ColorID::IMESelectedRawTextBackground:
+ case ColorID::IMESelectedConvertedTextBackground:
+ return true;
+ default:
+ return false;
+ }
+ };
+
+ auto IsHighlightTextColor = [&] {
+ switch (aID) {
+ case ColorID::MozMenubarhovertext:
+ if (UseNonNativeMenuColors(aScheme)) {
+ return false;
+ }
+ [[fallthrough]];
+ case ColorID::MozMenuhovertext:
+ if (UseNonNativeMenuColors(aScheme)) {
+ return false;
+ }
+ return !mColorMenuHoverText;
+ case ColorID::Highlighttext:
+ case ColorID::Selecteditemtext:
+ // We prefer the generic dark selection color if we don't have an
+ // explicit one.
+ return aScheme != ColorScheme::Dark || mDarkHighlightText;
+ case ColorID::IMESelectedRawTextForeground:
+ case ColorID::IMESelectedConvertedTextForeground:
+ return true;
+ default:
+ return false;
+ }
+ };
+
+ if (IsHighlightColor()) {
+ if (aScheme == ColorScheme::Dark && mDarkHighlight) {
+ aColor = *mDarkHighlight;
+ } else {
+ aColor = GetColorForSysColorIndex(COLOR_HIGHLIGHT);
+ }
+ return NS_OK;
+ }
+
+ if (IsHighlightTextColor()) {
+ if (aScheme == ColorScheme::Dark && mDarkHighlightText) {
+ aColor = *mDarkHighlightText;
+ } else {
+ aColor = GetColorForSysColorIndex(COLOR_HIGHLIGHTTEXT);
+ }
+ return NS_OK;
+ }
+
+ // Titlebar colors are color-scheme aware.
+ switch (aID) {
+ case ColorID::Activecaption:
+ aColor = mTitlebarColors.Get(aScheme, true).mBg;
+ return NS_OK;
+ case ColorID::Captiontext:
+ aColor = mTitlebarColors.Get(aScheme, true).mFg;
+ return NS_OK;
+ case ColorID::Activeborder:
+ aColor = mTitlebarColors.Get(aScheme, true).mBorder;
+ return NS_OK;
+ case ColorID::Inactivecaption:
+ aColor = mTitlebarColors.Get(aScheme, false).mBg;
+ return NS_OK;
+ case ColorID::Inactivecaptiontext:
+ aColor = mTitlebarColors.Get(aScheme, false).mFg;
+ return NS_OK;
+ case ColorID::Inactiveborder:
+ aColor = mTitlebarColors.Get(aScheme, false).mBorder;
+ return NS_OK;
+ default:
+ break;
+ }
+
+ if (aScheme == ColorScheme::Dark) {
+ if (auto color = GenericDarkColor(aID)) {
+ aColor = *color;
+ return NS_OK;
+ }
+ }
+
+ static constexpr auto kNonNativeMenuText = NS_RGB(0x15, 0x14, 0x1a);
+ nsresult res = NS_OK;
+ int idx;
+ switch (aID) {
+ 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;
+
+ // New CSS 2 Color definitions
+ 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:
+ case ColorID::MozColheader:
+ case ColorID::MozColheaderhover:
+ case ColorID::MozColheaderactive:
+ 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::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::MozMenubarhovertext:
+ if (UseNonNativeMenuColors(aScheme)) {
+ aColor = kNonNativeMenuText;
+ return NS_OK;
+ }
+ [[fallthrough]];
+ case ColorID::MozMenuhovertext:
+ if (UseNonNativeMenuColors(aScheme)) {
+ aColor = kNonNativeMenuText;
+ return NS_OK;
+ }
+ if (mColorMenuHoverText) {
+ aColor = *mColorMenuHoverText;
+ return NS_OK;
+ }
+ idx = COLOR_HIGHLIGHTTEXT;
+ break;
+ case ColorID::MozMenuhover:
+ MOZ_ASSERT(UseNonNativeMenuColors(aScheme));
+ aColor = NS_RGB(0xe0, 0xe0, 0xe6);
+ return NS_OK;
+ case ColorID::MozMenuhoverdisabled:
+ if (UseNonNativeMenuColors(aScheme)) {
+ aColor = NS_RGB(0xf0, 0xf0, 0xf3);
+ return NS_OK;
+ }
+ aColor = NS_TRANSPARENT;
+ return NS_OK;
+ case ColorID::Infobackground:
+ idx = COLOR_INFOBK;
+ break;
+ case ColorID::Infotext:
+ idx = COLOR_INFOTEXT;
+ break;
+ case ColorID::Menu:
+ if (UseNonNativeMenuColors(aScheme)) {
+ aColor = NS_RGB(0xf9, 0xf9, 0xfb);
+ return NS_OK;
+ }
+ idx = COLOR_MENU;
+ break;
+ case ColorID::Menutext:
+ if (UseNonNativeMenuColors(aScheme)) {
+ aColor = kNonNativeMenuText;
+ return NS_OK;
+ }
+ 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::Buttonborder:
+ case ColorID::MozDisabledfield:
+ case ColorID::MozSidebarborder:
+ 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::MozSidebar:
+ case ColorID::MozCombobox:
+ idx = COLOR_WINDOW;
+ break;
+ case ColorID::Fieldtext:
+ case ColorID::MozSidebartext:
+ case ColorID::MozComboboxtext:
+ idx = COLOR_WINDOWTEXT;
+ break;
+ case ColorID::MozHeaderbar:
+ case ColorID::MozHeaderbarinactive:
+ case ColorID::MozDialog:
+ idx = COLOR_3DFACE;
+ break;
+ case ColorID::Accentcolor:
+ aColor = mColorAccent;
+ return NS_OK;
+ case ColorID::Accentcolortext:
+ aColor = mColorAccentText;
+ return NS_OK;
+ case ColorID::MozHeaderbartext:
+ case ColorID::MozHeaderbarinactivetext:
+ case ColorID::MozDialogtext:
+ case ColorID::MozColheadertext:
+ case ColorID::MozColheaderhovertext:
+ case ColorID::MozColheaderactivetext:
+ idx = COLOR_WINDOWTEXT;
+ break;
+ case ColorID::MozNativehyperlinktext:
+ idx = COLOR_HOTLIGHT;
+ break;
+ case ColorID::Marktext:
+ case ColorID::Mark:
+ case ColorID::SpellCheckerUnderline:
+ aColor = GetStandinForNativeColor(aID, aScheme);
+ return NS_OK;
+ default:
+ idx = COLOR_WINDOW;
+ res = NS_ERROR_FAILURE;
+ break;
+ }
+
+ aColor = GetColorForSysColorIndex(idx);
+
+ return res;
+}
+
+nsresult nsLookAndFeel::NativeGetInt(IntID aID, int32_t& aResult) {
+ EnsureInit();
+ 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::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::WindowsAccentColorInTitlebar: {
+ aResult = mTitlebarColors.mUseAccent;
+ } 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;
+ [[fallthrough]];
+ 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 = static_cast<int32_t>(StyleTextDecorationStyle::Dashed);
+ break;
+ case IntID::IMESelectedRawTextUnderlineStyle:
+ case IntID::IMESelectedConvertedTextUnderline:
+ aResult = static_cast<int32_t>(StyleTextDecorationStyle::None);
+ break;
+ case IntID::SpellCheckerUnderlineStyle:
+ aResult = static_cast<int32_t>(StyleTextDecorationStyle::Wavy);
+ break;
+ case IntID::ScrollbarButtonAutoRepeatBehavior:
+ aResult = 0;
+ break;
+ case IntID::SwipeAnimationEnabled:
+ // Forcibly enable the swipe animation on Windows. It doesn't matter on
+ // platforms where "Drag two fingers to scroll" isn't supported since on
+ // the platforms we will never generate any swipe gesture events.
+ aResult = 1;
+ break;
+ case IntID::UseOverlayScrollbars:
+ aResult = WindowsUIUtils::ComputeOverlayScrollbars();
+ 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:
+ aResult = SystemWantsDarkTheme();
+ break;
+ case IntID::SystemScrollbarSize:
+ aResult = std::max(WinUtils::GetSystemMetricsForDpi(SM_CXVSCROLL, 96),
+ WinUtils::GetSystemMetricsForDpi(SM_CXHSCROLL, 96));
+ break;
+ case IntID::PrefersReducedMotion: {
+ BOOL enable = TRUE;
+ ::SystemParametersInfoW(SPI_GETCLIENTAREAANIMATION, 0, &enable, 0);
+ aResult = !enable;
+ break;
+ }
+ case IntID::PrefersReducedTransparency: {
+ // Prefers reduced transparency if the option for "Transparency Effects"
+ // is disabled
+ aResult = !WindowsUIUtils::ComputeTransparencyEffects();
+ break;
+ }
+ case IntID::InvertedColors: {
+ // Color filter values
+ // 1: Inverted
+ // 2: Grayscale inverted
+ aResult = mCurrentColorFilter == 1 || mCurrentColorFilter == 2;
+ 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();
+ break;
+ case IntID::PanelAnimations:
+ aResult = 1;
+ break;
+ case IntID::HideCursorWhileTyping: {
+ BOOL enable = TRUE;
+ ::SystemParametersInfoW(SPI_GETMOUSEVANISH, 0, &enable, 0);
+ aResult = enable;
+ 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;
+ case FloatID::TextScaleFactor:
+ aResult = WindowsUIUtils::ComputeTextScaleFactor();
+ 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() / LookAndFeel::GetTextScaleFactor();
+
+ // 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::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 nscolor GetAccentColorText(const nscolor aAccentColor) {
+ // 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(aAccentColor) * 2 + NS_GET_G(aAccentColor) * 5 +
+ NS_GET_B(aAccentColor)) /
+ 8;
+ return luminance <= 128 ? NS_RGB(255, 255, 255) : NS_RGB(0, 0, 0);
+}
+
+static Maybe<nscolor> GetAccentColorText(const Maybe<nscolor>& aAccentColor) {
+ if (!aAccentColor) {
+ return Nothing();
+ }
+ return Some(GetAccentColorText(*aAccentColor));
+}
+
+nscolor nsLookAndFeel::GetColorForSysColorIndex(int index) {
+ MOZ_ASSERT(index >= SYS_COLOR_MIN && index <= SYS_COLOR_MAX);
+ return mSysColorTable[index - SYS_COLOR_MIN];
+}
+
+auto nsLookAndFeel::ComputeTitlebarColors() -> TitlebarColors {
+ TitlebarColors result;
+
+ // Start with the native / non-accent-in-titlebar colors.
+ result.mActiveLight = {GetColorForSysColorIndex(COLOR_ACTIVECAPTION),
+ GetColorForSysColorIndex(COLOR_CAPTIONTEXT),
+ GetColorForSysColorIndex(COLOR_ACTIVEBORDER)};
+
+ result.mInactiveLight = {GetColorForSysColorIndex(COLOR_INACTIVECAPTION),
+ GetColorForSysColorIndex(COLOR_INACTIVECAPTIONTEXT),
+ GetColorForSysColorIndex(COLOR_INACTIVEBORDER)};
+
+ if (!nsUXThemeData::IsHighContrastOn()) {
+ // Use our non-native colors.
+ result.mActiveLight = {
+ GetStandinForNativeColor(ColorID::Activecaption, ColorScheme::Light),
+ GetStandinForNativeColor(ColorID::Captiontext, ColorScheme::Light),
+ GetStandinForNativeColor(ColorID::Activeborder, ColorScheme::Light)};
+ result.mInactiveLight = {
+ GetStandinForNativeColor(ColorID::Inactivecaption, ColorScheme::Light),
+ GetStandinForNativeColor(ColorID::Inactivecaptiontext,
+ ColorScheme::Light),
+ GetStandinForNativeColor(ColorID::Inactiveborder, ColorScheme::Light)};
+ }
+
+ // Our dark colors are always non-native.
+ result.mActiveDark = {*GenericDarkColor(ColorID::Activecaption),
+ *GenericDarkColor(ColorID::Captiontext),
+ *GenericDarkColor(ColorID::Activeborder)};
+ result.mInactiveDark = {*GenericDarkColor(ColorID::Inactivecaption),
+ *GenericDarkColor(ColorID::Inactivecaptiontext),
+ *GenericDarkColor(ColorID::Inactiveborder)};
+
+ // TODO(bug 1825241): Somehow get notified when this changes? Hopefully the
+ // sys color notification is enough.
+ WinRegistry::Key dwmKey(HKEY_CURRENT_USER,
+ u"SOFTWARE\\Microsoft\\Windows\\DWM"_ns,
+ WinRegistry::KeyMode::QueryValue);
+ if (NS_WARN_IF(!dwmKey)) {
+ return result;
+ }
+
+ // 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.
+ result.mAccent = dwmKey.GetValueAsDword(u"AccentColor"_ns);
+ result.mAccentText = GetAccentColorText(result.mAccent);
+
+ if (!result.mAccent) {
+ return result;
+ }
+
+ result.mAccentInactive = dwmKey.GetValueAsDword(u"AccentColorInactive"_ns);
+ result.mAccentInactiveText = GetAccentColorText(result.mAccentInactive);
+
+ // 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.
+ result.mUseAccent =
+ dwmKey.GetValueAsDword(u"ColorPrevalence"_ns).valueOr(0) == 1;
+ if (!result.mUseAccent) {
+ return result;
+ }
+
+ // TODO(emilio): Consider reading ColorizationColorBalance to compute a
+ // more correct border color, see [1]. Though for opaque accent colors this
+ // isn't needed.
+ //
+ // [1]:
+ // https://source.chromium.org/chromium/chromium/src/+/refs/heads/main:ui/color/win/accent_color_observer.cc;l=42;drc=9d4eb7ed25296abba8fd525a6bdd0fdbf4bcdd9f
+ result.mActiveDark.mBorder = result.mActiveLight.mBorder = *result.mAccent;
+ result.mInactiveDark.mBorder = result.mInactiveLight.mBorder =
+ result.mAccentInactive.valueOr(NS_RGB(57, 57, 57));
+ result.mActiveLight.mBg = result.mActiveDark.mBg = *result.mAccent;
+ result.mActiveLight.mFg = result.mActiveDark.mFg = *result.mAccentText;
+ if (result.mAccentInactive) {
+ result.mInactiveLight.mBg = result.mInactiveDark.mBg =
+ *result.mAccentInactive;
+ result.mInactiveLight.mFg = result.mInactiveDark.mFg =
+ *result.mAccentInactiveText;
+ } else {
+ // This is hand-picked to .8 to change the accent color a bit but not too
+ // much.
+ constexpr uint8_t kBgAlpha = 208;
+ const auto BlendWithAlpha = [](nscolor aBg, nscolor aFg,
+ uint8_t aAlpha) -> nscolor {
+ return NS_ComposeColors(
+ aBg, NS_RGBA(NS_GET_R(aFg), NS_GET_G(aFg), NS_GET_B(aFg), aAlpha));
+ };
+ result.mInactiveLight.mBg =
+ BlendWithAlpha(NS_RGB(255, 255, 255), *result.mAccent, kBgAlpha);
+ result.mInactiveDark.mBg =
+ BlendWithAlpha(NS_RGB(0, 0, 0), *result.mAccent, kBgAlpha);
+ result.mInactiveLight.mFg = result.mInactiveDark.mFg = *result.mAccentText;
+ }
+ return result;
+}
+
+void nsLookAndFeel::EnsureInit() {
+ if (mInitialized) {
+ return;
+ }
+ mInitialized = true;
+
+ mColorMenuHoverText =
+ ::GetColorFromTheme(eUXMenu, MENU_POPUPITEM, MPI_HOT, TMT_TEXTCOLOR);
+
+ // Fill out the sys color table.
+ for (int i = SYS_COLOR_MIN; i <= SYS_COLOR_MAX; ++i) {
+ mSysColorTable[i - SYS_COLOR_MIN] = [&] {
+ if (auto c = WindowsUIUtils::GetSystemColor(ColorScheme::Light, i)) {
+ return *c;
+ }
+ DWORD color = ::GetSysColor(i);
+ return COLOREF_2_NSRGB(color);
+ }();
+ }
+
+ mDarkHighlight =
+ WindowsUIUtils::GetSystemColor(ColorScheme::Dark, COLOR_HIGHLIGHT);
+ mDarkHighlightText =
+ WindowsUIUtils::GetSystemColor(ColorScheme::Dark, COLOR_HIGHLIGHTTEXT);
+
+ mTitlebarColors = ComputeTitlebarColors();
+
+ mColorAccent = [&] {
+ if (auto accent = WindowsUIUtils::GetAccentColor()) {
+ return *accent;
+ }
+ // Try the titlebar accent as a fallback.
+ if (mTitlebarColors.mAccent) {
+ return *mTitlebarColors.mAccent;
+ }
+ // Seems to be the default color (hardcoded because of bug 1065998)
+ return NS_RGB(0, 120, 215);
+ }();
+ mColorAccentText = GetAccentColorText(mColorAccent);
+
+ if (!mColorFilterWatcher) {
+ WinRegistry::Key key(
+ HKEY_CURRENT_USER, u"Software\\Microsoft\\ColorFiltering"_ns,
+ WinRegistry::KeyMode::QueryValue | WinRegistry::KeyMode::Notify);
+ if (key) {
+ mColorFilterWatcher = MakeUnique<WinRegistry::KeyWatcher>(
+ std::move(key), GetCurrentSerialEventTarget(), [this] {
+ MOZ_DIAGNOSTIC_ASSERT(NS_IsMainThread());
+ if (mCurrentColorFilter != SystemColorFilter()) {
+ LookAndFeel::NotifyChangedAllWindows(
+ widget::ThemeChangeKind::MediaQueriesOnly);
+ }
+ });
+ }
+ }
+ mCurrentColorFilter = SystemColorFilter();
+
+ RecordTelemetry();
+}