widget/gtk/nsLookAndFeel.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim:expandtab:shiftwidth=2:tabstop=2:
   3  */
   4 /* This Source Code Form is subject to the terms of the Mozilla Public
   5  * License, v. 2.0. If a copy of the MPL was not distributed with this
   6  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   7
   8 #ifndef __nsLookAndFeel
   9 #define __nsLookAndFeel
  10
  11 #include "X11UndefineNone.h"
  12 #include "nsXPLookAndFeel.h"
  13 #include "nsCOMPtr.h"
  14 #include "gfxFont.h"
  15
  16 enum WidgetNodeType : int;
  17 struct _GtkStyle;
  18 typedef struct _GDBusProxy GDBusProxy;
  19 typedef struct _GtkCssProvider GtkCssProvider;
  20 typedef struct _GFile GFile;
  21 typedef struct _GFileMonitor GFileMonitor;
  22
  23 namespace mozilla {
  24 enum class StyleGtkThemeFamily : uint8_t;
  25 }
  26
  27 class nsLookAndFeel final : public nsXPLookAndFeel {
  28  public:
  29   nsLookAndFeel();
  30   virtual ~nsLookAndFeel();
  31
  32   void NativeInit() final;
  33   void RefreshImpl() override;
  34   nsresult NativeGetInt(IntID aID, int32_t& aResult) override;
  35   nsresult NativeGetFloat(FloatID aID, float& aResult) override;
  36   nsresult NativeGetColor(ColorID, ColorScheme, nscolor& aResult) override;
  37   bool NativeGetFont(FontID aID, nsString& aFontName,
  38                      gfxFontStyle& aFontStyle) override;
  39
  40   char16_t GetPasswordCharacterImpl() override;
  41   bool GetEchoPasswordImpl() override;
  42
  43   bool GetDefaultDrawInTitlebar() override;
  44
  45   void GetThemeInfo(nsACString&) override;
  46
  47   static const nscolor kBlack = NS_RGB(0, 0, 0);
  48   static const nscolor kWhite = NS_RGB(255, 255, 255);
  49   void OnColorSchemeSettingChanged();
  50
  51   struct ColorPair {
  52     nscolor mBg = kWhite;
  53     nscolor mFg = kBlack;
  54   };
  55
  56   using ThemeFamily = mozilla::StyleGtkThemeFamily;
  57
  58  protected:
  59   static bool WidgetUsesImage(WidgetNodeType aNodeType);
  60   void RecordLookAndFeelSpecificTelemetry() override;
  61   static bool ShouldHonorThemeScrollbarColors();
  62   mozilla::Maybe<ColorScheme> ComputeColorSchemeSetting();
  63
  64   void WatchDBus();
  65   void UnwatchDBus();
  66
  67   // We use up to two themes (one light, one dark), which might have different
  68   // sets of fonts and colors.
  69   struct PerThemeData {
  70     nsCString mName;
  71     bool mIsDark = false;
  72     bool mHighContrast = false;
  73     bool mPreferDarkTheme = false;
  74
  75     ThemeFamily mFamily{0};
  76
  77     // Cached fonts
  78     nsString mDefaultFontName;
  79     nsString mButtonFontName;
  80     nsString mFieldFontName;
  81     nsString mMenuFontName;
  82     gfxFontStyle mDefaultFontStyle;
  83     gfxFontStyle mButtonFontStyle;
  84     gfxFontStyle mFieldFontStyle;
  85     gfxFontStyle mMenuFontStyle;
  86
  87     // Cached colors
  88     nscolor mGrayText = kBlack;
  89     ColorPair mInfo;
  90     ColorPair mMenu;
  91     ColorPair mMenuHover;
  92     ColorPair mHeaderBar;
  93     ColorPair mHeaderBarInactive;
  94     ColorPair mButton;
  95     ColorPair mButtonHover;
  96     ColorPair mButtonActive;
  97     nscolor mButtonBorder = kBlack;
  98     nscolor mThreeDHighlight = kBlack;
  99     nscolor mThreeDShadow = kBlack;
 100     nscolor mOddCellBackground = kWhite;
 101     nscolor mNativeHyperLinkText = kBlack;
 102     nscolor mNativeVisitedHyperLinkText = kBlack;
 103     // FIXME: This doesn't seem like it'd be sound since we use Window for
 104     // -moz-Combobox... But I guess we rely on chrome code not setting
 105     // appearance: none on selects or overriding the color if they do.
 106     nscolor mComboBoxText = kBlack;
 107     ColorPair mField;
 108     ColorPair mWindow;
 109     ColorPair mDialog;
 110     ColorPair mSidebar;
 111     nscolor mSidebarBorder = kBlack;
 112
 113     nscolor mMozWindowActiveBorder = kBlack;
 114     nscolor mMozWindowInactiveBorder = kBlack;
 115
 116     ColorPair mCellHighlight;
 117     ColorPair mSelectedText;
 118     ColorPair mAccent;
 119     ColorPair mSelectedItem;
 120
 121     ColorPair mMozColHeader;
 122     ColorPair mMozColHeaderHover;
 123     ColorPair mMozColHeaderActive;
 124
 125     ColorPair mTitlebar;
 126     ColorPair mTitlebarInactive;
 127
 128     nscolor mThemedScrollbar = kWhite;
 129     nscolor mThemedScrollbarInactive = kWhite;
 130     nscolor mThemedScrollbarThumb = kBlack;
 131     nscolor mThemedScrollbarThumbHover = kBlack;
 132     nscolor mThemedScrollbarThumbActive = kBlack;
 133     nscolor mThemedScrollbarThumbInactive = kBlack;
 134
 135     float mCaretRatio = 0.0f;
 136     int32_t mTitlebarRadius = 0;
 137     char16_t mInvisibleCharacter = 0;
 138     bool mMenuSupportsDrag = false;
 139
 140     void Init();
 141     nsresult GetColor(ColorID, nscolor&) const;
 142     bool GetFont(FontID, nsString& aFontName, gfxFontStyle&) const;
 143     void InitCellHighlightColors();
 144   };
 145
 146   PerThemeData mSystemTheme;
 147
 148   // If the system theme is light, a dark theme. Otherwise, a light theme. The
 149   // alternative theme to the current one is preferred, but otherwise we fall
 150   // back to Adwaita / Adwaita Dark, respectively.
 151   PerThemeData mAltTheme;
 152
 153   const PerThemeData& LightTheme() const {
 154     return mSystemTheme.mIsDark ? mAltTheme : mSystemTheme;
 155   }
 156
 157   const PerThemeData& DarkTheme() const {
 158     return mSystemTheme.mIsDark ? mSystemTheme : mAltTheme;
 159   }
 160
 161   const PerThemeData& EffectiveTheme() const {
 162     return mSystemThemeOverridden ? mAltTheme : mSystemTheme;
 163   }
 164
 165   uint32_t mDBusID = 0;
 166   RefPtr<GDBusProxy> mDBusSettingsProxy;
 167   RefPtr<GFile> mKdeColors;
 168   RefPtr<GFileMonitor> mKdeColorsMonitor;
 169   mozilla::Maybe<ColorScheme> mColorSchemePreference;
 170   int32_t mCaretBlinkTime = 0;
 171   int32_t mCaretBlinkCount = -1;
 172   bool mCSDMaximizeButton = false;
 173   bool mCSDMinimizeButton = false;
 174   bool mCSDCloseButton = false;
 175   bool mCSDReversedPlacement = false;
 176   bool mPrefersReducedMotion = false;
 177   bool mInitialized = false;
 178   bool mSystemThemeOverridden = false;
 179   int32_t mCSDMaximizeButtonPosition = 0;
 180   int32_t mCSDMinimizeButtonPosition = 0;
 181   int32_t mCSDCloseButtonPosition = 0;
 182
 183   RefPtr<GtkCssProvider> mRoundedCornerProvider;
 184   void UpdateRoundedBottomCornerStyles();
 185
 186   void ClearRoundedCornerProvider();
 187
 188   void EnsureInit() {
 189     if (mInitialized) {
 190       return;
 191     }
 192     Initialize();
 193   }
 194
 195   void Initialize();
 196
 197   void RestoreSystemTheme();
 198   void InitializeGlobalSettings();
 199   // Returns whether we found an alternative theme.
 200   bool ConfigureAltTheme();
 201   void ConfigureAndInitializeAltTheme();
 202   void ConfigureFinalEffectiveTheme();
 203   void MaybeApplyAdwaitaOverrides();
 204 };
 205
 206 #endif