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   nsXPLookAndFeel::TitlebarAction GetTitlebarAction(
  46       TitlebarEvent aEvent) override;
  47
  48   void GetThemeInfo(nsACString&) override;
  49
  50   static const nscolor kBlack = NS_RGB(0, 0, 0);
  51   static const nscolor kWhite = NS_RGB(255, 255, 255);
  52   void OnColorSchemeSettingChanged();
  53
  54   struct ColorPair {
  55     nscolor mBg = kWhite;
  56     nscolor mFg = kBlack;
  57   };
  58
  59   using ThemeFamily = mozilla::StyleGtkThemeFamily;
  60
  61  protected:
  62   static bool WidgetUsesImage(WidgetNodeType aNodeType);
  63   void RecordLookAndFeelSpecificTelemetry() override;
  64   static bool ShouldHonorThemeScrollbarColors();
  65   mozilla::Maybe<ColorScheme> ComputeColorSchemeSetting();
  66
  67   void WatchDBus();
  68   void UnwatchDBus();
  69
  70   // We use up to two themes (one light, one dark), which might have different
  71   // sets of fonts and colors.
  72   struct PerThemeData {
  73     nsCString mName;
  74     bool mIsDark = false;
  75     bool mHighContrast = false;
  76     bool mPreferDarkTheme = false;
  77
  78     ThemeFamily mFamily{0};
  79
  80     // Cached fonts
  81     nsString mDefaultFontName;
  82     nsString mButtonFontName;
  83     nsString mFieldFontName;
  84     nsString mMenuFontName;
  85     gfxFontStyle mDefaultFontStyle;
  86     gfxFontStyle mButtonFontStyle;
  87     gfxFontStyle mFieldFontStyle;
  88     gfxFontStyle mMenuFontStyle;
  89
  90     // Cached colors
  91     nscolor mGrayText = kBlack;
  92     ColorPair mInfo;
  93     ColorPair mMenu;
  94     ColorPair mMenuHover;
  95     ColorPair mHeaderBar;
  96     ColorPair mHeaderBarInactive;
  97     ColorPair mButton;
  98     ColorPair mButtonHover;
  99     ColorPair mButtonActive;
 100     nscolor mButtonBorder = kBlack;
 101     nscolor mThreeDHighlight = kBlack;
 102     nscolor mThreeDShadow = kBlack;
 103     nscolor mOddCellBackground = kWhite;
 104     nscolor mNativeHyperLinkText = kBlack;
 105     nscolor mNativeVisitedHyperLinkText = kBlack;
 106     // FIXME: This doesn't seem like it'd be sound since we use Window for
 107     // -moz-Combobox... But I guess we rely on chrome code not setting
 108     // appearance: none on selects or overriding the color if they do.
 109     nscolor mComboBoxText = kBlack;
 110     ColorPair mField;
 111     ColorPair mWindow;
 112     ColorPair mDialog;
 113     ColorPair mSidebar;
 114     nscolor mSidebarBorder = kBlack;
 115
 116     nscolor mMozWindowActiveBorder = kBlack;
 117     nscolor mMozWindowInactiveBorder = kBlack;
 118
 119     ColorPair mCellHighlight;
 120     ColorPair mSelectedText;
 121     ColorPair mAccent;
 122     ColorPair mSelectedItem;
 123
 124     ColorPair mMozColHeader;
 125     ColorPair mMozColHeaderHover;
 126     ColorPair mMozColHeaderActive;
 127
 128     ColorPair mTitlebar;
 129     ColorPair mTitlebarInactive;
 130
 131     nscolor mThemedScrollbar = kWhite;
 132     nscolor mThemedScrollbarInactive = kWhite;
 133     nscolor mThemedScrollbarThumb = kBlack;
 134     nscolor mThemedScrollbarThumbHover = kBlack;
 135     nscolor mThemedScrollbarThumbActive = kBlack;
 136     nscolor mThemedScrollbarThumbInactive = kBlack;
 137
 138     float mCaretRatio = 0.0f;
 139     int32_t mTitlebarRadius = 0;
 140     int32_t mTitlebarButtonSpacing = 0;
 141     char16_t mInvisibleCharacter = 0;
 142     bool mMenuSupportsDrag = false;
 143
 144     void Init();
 145     nsresult GetColor(ColorID, nscolor&) const;
 146     bool GetFont(FontID, nsString& aFontName, gfxFontStyle&) const;
 147     void InitCellHighlightColors();
 148   };
 149
 150   PerThemeData mSystemTheme;
 151
 152   // If the system theme is light, a dark theme. Otherwise, a light theme. The
 153   // alternative theme to the current one is preferred, but otherwise we fall
 154   // back to Adwaita / Adwaita Dark, respectively.
 155   PerThemeData mAltTheme;
 156
 157   const PerThemeData& LightTheme() const {
 158     return mSystemTheme.mIsDark ? mAltTheme : mSystemTheme;
 159   }
 160
 161   const PerThemeData& DarkTheme() const {
 162     return mSystemTheme.mIsDark ? mSystemTheme : mAltTheme;
 163   }
 164
 165   const PerThemeData& EffectiveTheme() const {
 166     return mSystemThemeOverridden ? mAltTheme : mSystemTheme;
 167   }
 168
 169   uint32_t mDBusID = 0;
 170   RefPtr<GDBusProxy> mDBusSettingsProxy;
 171   RefPtr<GFile> mKdeColors;
 172   RefPtr<GFileMonitor> mKdeColorsMonitor;
 173   mozilla::Maybe<ColorScheme> mColorSchemePreference;
 174   int32_t mCaretBlinkTime = 0;
 175   int32_t mCaretBlinkCount = -1;
 176   bool mCSDMaximizeButton = false;
 177   bool mCSDMinimizeButton = false;
 178   bool mCSDCloseButton = false;
 179   bool mCSDReversedPlacement = false;
 180   bool mPrefersReducedMotion = false;
 181   bool mInitialized = false;
 182   bool mSystemThemeOverridden = false;
 183   int32_t mCSDMaximizeButtonPosition = 0;
 184   int32_t mCSDMinimizeButtonPosition = 0;
 185   int32_t mCSDCloseButtonPosition = 0;
 186   TitlebarAction mDoubleClickAction = TitlebarAction::None;
 187   TitlebarAction mMiddleClickAction = TitlebarAction::None;
 188
 189   RefPtr<GtkCssProvider> mRoundedCornerProvider;
 190   void UpdateRoundedBottomCornerStyles();
 191
 192   void ClearRoundedCornerProvider();
 193
 194   void EnsureInit() {
 195     if (mInitialized) {
 196       return;
 197     }
 198     Initialize();
 199   }
 200
 201   void Initialize();
 202
 203   void RestoreSystemTheme();
 204   void InitializeGlobalSettings();
 205   // Returns whether we found an alternative theme.
 206   bool ConfigureAltTheme();
 207   void ConfigureAndInitializeAltTheme();
 208   void ConfigureFinalEffectiveTheme();
 209   void MaybeApplyAdwaitaOverrides();
 210 };
 211
 212 #endif