зеркало из https://github.com/mozilla/gecko-dev.git
110 строки
3.6 KiB
C++
110 строки
3.6 KiB
C++
/* -*- Mode: C++; tab-width: 40; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_widget_ThemeColors_h
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#define mozilla_widget_ThemeColors_h
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#include "mozilla/dom/Document.h"
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#include "mozilla/gfx/Types.h"
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#include "mozilla/LookAndFeel.h"
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#include "nsIFrame.h"
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namespace mozilla::widget {
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static constexpr gfx::sRGBColor sDefaultAccent(
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gfx::sRGBColor::UnusualFromARGB(0xff0060df)); // Luminance: 13.69346%
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static constexpr gfx::sRGBColor sDefaultAccentForeground(
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gfx::sRGBColor::OpaqueWhite());
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class ThemeAccentColor {
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protected:
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using sRGBColor = mozilla::gfx::sRGBColor;
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using ComputedStyle = mozilla::ComputedStyle;
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Maybe<nscolor> mAccentColor;
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public:
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explicit ThemeAccentColor(const ComputedStyle& aStyle);
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virtual ~ThemeAccentColor() = default;
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sRGBColor Get() const;
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sRGBColor GetForeground() const;
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sRGBColor GetLight() const;
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sRGBColor GetDark() const;
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sRGBColor GetDarker() const;
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};
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// Widget color information associated to a particular frame.
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class ThemeColors {
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protected:
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using Document = mozilla::dom::Document;
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using sRGBColor = mozilla::gfx::sRGBColor;
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using LookAndFeel = mozilla::LookAndFeel;
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using StyleSystemColor = mozilla::StyleSystemColor;
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using AccentColor = ThemeAccentColor;
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const AccentColor mAccentColor;
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const Document& mDoc;
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const bool mHighContrast;
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const LookAndFeel::ColorScheme mColorScheme;
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public:
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explicit ThemeColors(const nsIFrame* aFrame, StyleAppearance aAppearance)
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: mAccentColor(*aFrame->Style()),
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mDoc(*aFrame->PresContext()->Document()),
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mHighContrast(ShouldBeHighContrast(*aFrame->PresContext())),
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mColorScheme(ColorSchemeForWidget(aFrame, aAppearance, mHighContrast)) {
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}
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virtual ~ThemeColors() = default;
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[[nodiscard]] static float ScaleLuminanceBy(float aLuminance, float aFactor) {
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return aLuminance >= 0.18f ? aLuminance * aFactor : aLuminance / aFactor;
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}
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const AccentColor& Accent() const { return mAccentColor; }
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bool HighContrast() const { return mHighContrast; }
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bool IsDark() const { return mColorScheme == LookAndFeel::ColorScheme::Dark; }
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nscolor SystemNs(StyleSystemColor aColor) const {
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return LookAndFeel::Color(aColor, mColorScheme,
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LookAndFeel::ShouldUseStandins(mDoc, aColor));
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}
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sRGBColor System(StyleSystemColor aColor) const {
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return sRGBColor::FromABGR(SystemNs(aColor));
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}
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template <typename Compute>
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sRGBColor SystemOrElse(StyleSystemColor aColor, Compute aCompute) const {
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if (auto color = LookAndFeel::GetColor(
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aColor, mColorScheme,
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LookAndFeel::ShouldUseStandins(mDoc, aColor))) {
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return sRGBColor::FromABGR(*color);
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}
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return aCompute();
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}
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std::pair<sRGBColor, sRGBColor> SystemPair(StyleSystemColor aFirst,
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StyleSystemColor aSecond) const {
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return std::make_pair(System(aFirst), System(aSecond));
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}
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// Whether we should use system colors (for high contrast mode).
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static bool ShouldBeHighContrast(const nsPresContext&);
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static ColorScheme ColorSchemeForWidget(const nsIFrame*, StyleAppearance,
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bool aHighContrast);
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static void RecomputeAccentColors();
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static nscolor ComputeCustomAccentForeground(nscolor aColor);
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static nscolor AdjustUnthemedScrollbarThumbColor(nscolor aFaceColor,
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EventStates aStates);
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};
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} // namespace mozilla::widget
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#endif
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