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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:expandtab:shiftwidth=2:tabstop=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 */
#ifndef __nsLookAndFeel
#define __nsLookAndFeel
#include "X11UndefineNone.h"
#include "nsXPLookAndFeel.h"
#include "nsCOMPtr.h"
#include "gfxFont.h"
enum WidgetNodeType : int;
struct _GtkStyle;
class nsLookAndFeel final : public nsXPLookAndFeel {
virtual ~nsLookAndFeel();
void NativeInit() final;
void RefreshImpl() override;
nsresult NativeGetInt(IntID aID, int32_t& aResult) override;
nsresult NativeGetFloat(FloatID aID, float& aResult) override;
nsresult NativeGetColor(ColorID, ColorScheme, nscolor& aResult) override;
bool NativeGetFont(FontID aID, nsString& aFontName,
gfxFontStyle& aFontStyle) override;
char16_t GetPasswordCharacterImpl() override;
bool GetEchoPasswordImpl() override;
bool GetDefaultDrawInTitlebar() override;
template <typename Callback>
void WithAltThemeConfigured(const Callback&);
void InitializeAltTheme();
void GetGtkContentTheme(LookAndFeelTheme&) override;
void GetThemeInfo(nsACString&) override;
static void ConfigureTheme(const LookAndFeelTheme& aTheme);
static const nscolor kBlack = NS_RGB(0, 0, 0);
static const nscolor kWhite = NS_RGB(255, 255, 255);
static bool WidgetUsesImage(WidgetNodeType aNodeType);
void RecordLookAndFeelSpecificTelemetry() override;
static bool ShouldHonorThemeScrollbarColors();
// We use up to two themes (one light, one dark), which might have different
// sets of fonts and colors.
struct PerThemeData {
nsCString mName;
bool mIsDark = false;
bool mHighContrast = false;
bool mPreferDarkTheme = false;
// NOTE(emilio): This is unused, but if we need to we can use it to override
// system colors with standins like we do for the non-native theme.
bool mCompatibleWithHTMLLightColors = false;
// Cached fonts
nsString mDefaultFontName;
nsString mButtonFontName;
nsString mFieldFontName;
nsString mMenuFontName;
gfxFontStyle mDefaultFontStyle;
gfxFontStyle mButtonFontStyle;
gfxFontStyle mFieldFontStyle;
gfxFontStyle mMenuFontStyle;
// Cached colors
nscolor mInfoBackground = kWhite;
nscolor mInfoText = kBlack;
nscolor mMenuBackground = kWhite;
nscolor mMenuBarText = kBlack;
nscolor mMenuBarHoverText = kBlack;
nscolor mMenuText = kBlack;
nscolor mMenuTextInactive = kWhite;
nscolor mMenuHover = kWhite;
nscolor mMenuHoverText = kBlack;
nscolor mButtonDefault = kWhite;
nscolor mButtonText = kBlack;
nscolor mButtonHoverText = kBlack;
nscolor mButtonHoverFace = kWhite;
nscolor mButtonActiveText = kBlack;
nscolor mFrameOuterLightBorder = kBlack;
nscolor mFrameInnerDarkBorder = kBlack;
nscolor mOddCellBackground = kWhite;
nscolor mNativeHyperLinkText = kBlack;
nscolor mNativeVisitedHyperLinkText = kBlack;
nscolor mComboBoxText = kBlack;
nscolor mComboBoxBackground = kWhite;
nscolor mFieldText = kBlack;
nscolor mFieldBackground = kWhite;
nscolor mMozWindowText = kBlack;
nscolor mMozWindowBackground = kWhite;
nscolor mMozWindowActiveBorder = kBlack;
nscolor mMozWindowInactiveBorder = kBlack;
nscolor mMozCellHighlightBackground = kWhite;
nscolor mMozCellHighlightText = kBlack;
nscolor mTextSelectedText = kBlack;
nscolor mTextSelectedBackground = kWhite;
nscolor mAccentColor = kWhite;
nscolor mAccentColorForeground = kWhite;
nscolor mMozScrollbar = kWhite;
nscolor mMozColHeaderText = kBlack;
nscolor mMozColHeaderHoverText = kBlack;
nscolor mTitlebarText = kBlack;
nscolor mTitlebarBackground = kWhite;
nscolor mTitlebarInactiveText = kBlack;
nscolor mTitlebarInactiveBackground = kWhite;
nscolor mThemedScrollbar = kWhite;
nscolor mThemedScrollbarInactive = kWhite;
nscolor mThemedScrollbarThumb = kBlack;
nscolor mThemedScrollbarThumbHover = kBlack;
nscolor mThemedScrollbarThumbActive = kBlack;
nscolor mThemedScrollbarThumbInactive = kBlack;
float mCaretRatio = 0.0f;
int32_t mTitlebarRadius = 0;
int32_t mMenuRadius = 0;
char16_t mInvisibleCharacter = 0;
bool mMenuSupportsDrag = false;
void Init();
nsresult GetColor(ColorID, nscolor&) const;
bool GetFont(FontID, nsString& aFontName, gfxFontStyle&) const;
void InitCellHighlightColors();
PerThemeData mSystemTheme;
// If the system theme is light, a dark theme. Otherwise, a light theme. The
// alternative theme to the current one is preferred, but otherwise we fall
// back to Adwaita / Adwaita Dark, respectively.
PerThemeData mAltTheme;
const PerThemeData& LightTheme() const {
return mSystemTheme.mIsDark ? mAltTheme : mSystemTheme;
const PerThemeData& DarkTheme() const {
return mSystemTheme.mIsDark ? mSystemTheme : mAltTheme;
const PerThemeData& EffectiveTheme() const {
return mSystemThemeOverridden ? mAltTheme : mSystemTheme;
int32_t mCaretBlinkTime = 0;
int32_t mCaretBlinkCount = -1;
bool mCSDMaximizeButton = false;
bool mCSDMinimizeButton = false;
bool mCSDCloseButton = false;
bool mCSDReversedPlacement = false;
bool mPrefersReducedMotion = false;
bool mInitialized = false;
bool mSystemThemeOverridden = false;
int32_t mCSDMaximizeButtonPosition = 0;
int32_t mCSDMinimizeButtonPosition = 0;
int32_t mCSDCloseButtonPosition = 0;
void EnsureInit();
void RestoreSystemTheme();
bool MatchFirefoxThemeIfNeeded();