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Diffstat (limited to '')
| -rw-r--r-- | widget/windows/nsLookAndFeel.cpp | 916 |
1 files changed, 916 insertions, 0 deletions
diff --git a/widget/windows/nsLookAndFeel.cpp b/widget/windows/nsLookAndFeel.cpp new file mode 100644 index 0000000000..01b126cd42 --- /dev/null +++ b/widget/windows/nsLookAndFeel.cpp @@ -0,0 +1,916 @@ +/* -*- 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(); +} |