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   nsresult GetKeyboardLayoutImpl(nsACString& aLayout) override;
  51
  52   static const nscolor kBlack = NS_RGB(0, 0, 0);
  53   static const nscolor kWhite = NS_RGB(255, 255, 255);
  54   void OnColorSchemeSettingChanged();
  55
  56   struct ColorPair {
  57     nscolor mBg = kWhite;
  58     nscolor mFg = kBlack;
  59   };
  60
  61   using ThemeFamily = mozilla::StyleGtkThemeFamily;
  62
  63  protected:
  64   static bool WidgetUsesImage(WidgetNodeType aNodeType);
  65   void RecordLookAndFeelSpecificTelemetry() override;
  66   static bool ShouldHonorThemeScrollbarColors();
  67   mozilla::Maybe<ColorScheme> ComputeColorSchemeSetting();
  68
  69   void WatchDBus();
  70   void UnwatchDBus();
  71
  72   // We use up to two themes (one light, one dark), which might have different
  73   // sets of fonts and colors.
  74   struct PerThemeData {
  75     nsCString mName;
  76     bool mIsDark = false;
  77     bool mHighContrast = false;
  78     bool mPreferDarkTheme = false;
  79
  80     ThemeFamily mFamily{0};
  81
  82     // Cached fonts
  83     nsString mDefaultFontName;
  84     nsString mButtonFontName;
  85     nsString mFieldFontName;
  86     nsString mMenuFontName;
  87     gfxFontStyle mDefaultFontStyle;
  88     gfxFontStyle mButtonFontStyle;
  89     gfxFontStyle mFieldFontStyle;
  90     gfxFontStyle mMenuFontStyle;
  91
  92     // Cached colors
  93     nscolor mGrayText = kBlack;
  94     ColorPair mInfo;
  95     ColorPair mMenu;
  96     ColorPair mMenuHover;
  97     ColorPair mHeaderBar;
  98     ColorPair mHeaderBarInactive;
  99     ColorPair mButton;
 100     ColorPair mButtonHover;
 101     ColorPair mButtonActive;
 102     nscolor mButtonBorder = kBlack;
 103     nscolor mThreeDHighlight = kBlack;
 104     nscolor mThreeDShadow = kBlack;
 105     nscolor mOddCellBackground = kWhite;
 106     nscolor mNativeHyperLinkText = kBlack;
 107     nscolor mNativeVisitedHyperLinkText = kBlack;
 108     // FIXME: This doesn't seem like it'd be sound since we use Window for
 109     // -moz-Combobox... But I guess we rely on chrome code not setting
 110     // appearance: none on selects or overriding the color if they do.
 111     nscolor mComboBoxText = kBlack;
 112     ColorPair mField;
 113     ColorPair mWindow;
 114     ColorPair mDialog;
 115     ColorPair mSidebar;
 116     nscolor mSidebarBorder = kBlack;
 117
 118     nscolor mMozWindowActiveBorder = kBlack;
 119     nscolor mMozWindowInactiveBorder = kBlack;
 120
 121     ColorPair mCellHighlight;
 122     ColorPair mSelectedText;
 123     ColorPair mAccent;
 124     ColorPair mSelectedItem;
 125
 126     ColorPair mMozColHeader;
 127     ColorPair mMozColHeaderHover;
 128     ColorPair mMozColHeaderActive;
 129
 130     ColorPair mTitlebar;
 131     ColorPair mTitlebarInactive;
 132
 133     nscolor mThemedScrollbar = kWhite;
 134     nscolor mThemedScrollbarInactive = kWhite;
 135     nscolor mThemedScrollbarThumb = kBlack;
 136     nscolor mThemedScrollbarThumbHover = kBlack;
 137     nscolor mThemedScrollbarThumbActive = kBlack;
 138     nscolor mThemedScrollbarThumbInactive = kBlack;
 139
 140     float mCaretRatio = 0.0f;
 141     int32_t mTitlebarRadius = 0;
 142     int32_t mTitlebarButtonSpacing = 0;
 143     char16_t mInvisibleCharacter = 0;
 144     bool mMenuSupportsDrag = false;
 145
 146     void Init();
 147     nsresult GetColor(ColorID, nscolor&) const;
 148     bool GetFont(FontID, nsString& aFontName, gfxFontStyle&) const;
 149     void InitCellHighlightColors();
 150   };
 151
 152   PerThemeData mSystemTheme;
 153
 154   // If the system theme is light, a dark theme. Otherwise, a light theme. The
 155   // alternative theme to the current one is preferred, but otherwise we fall
 156   // back to Adwaita / Adwaita Dark, respectively.
 157   PerThemeData mAltTheme;
 158
 159   const PerThemeData& LightTheme() const {
 160     return mSystemTheme.mIsDark ? mAltTheme : mSystemTheme;
 161   }
 162
 163   const PerThemeData& DarkTheme() const {
 164     return mSystemTheme.mIsDark ? mSystemTheme : mAltTheme;
 165   }
 166
 167   const PerThemeData& EffectiveTheme() const {
 168     return mSystemThemeOverridden ? mAltTheme : mSystemTheme;
 169   }
 170
 171   uint32_t mDBusID = 0;
 172   RefPtr<GDBusProxy> mDBusSettingsProxy;
 173   RefPtr<GFile> mKdeColors;
 174   RefPtr<GFileMonitor> mKdeColorsMonitor;
 175   mozilla::Maybe<ColorScheme> mColorSchemePreference;
 176   int32_t mCaretBlinkTime = 0;
 177   int32_t mCaretBlinkCount = -1;
 178   bool mCSDMaximizeButton = false;
 179   bool mCSDMinimizeButton = false;
 180   bool mCSDCloseButton = false;
 181   bool mCSDReversedPlacement = false;
 182   bool mPrefersReducedMotion = false;
 183   bool mInitialized = false;
 184   bool mSystemThemeOverridden = false;
 185   int32_t mCSDMaximizeButtonPosition = 0;
 186   int32_t mCSDMinimizeButtonPosition = 0;
 187   int32_t mCSDCloseButtonPosition = 0;
 188   TitlebarAction mDoubleClickAction = TitlebarAction::None;
 189   TitlebarAction mMiddleClickAction = TitlebarAction::None;
 190
 191   RefPtr<GtkCssProvider> mRoundedCornerProvider;
 192   void UpdateRoundedBottomCornerStyles();
 193
 194   void ClearRoundedCornerProvider();
 195
 196   void EnsureInit() {
 197     if (mInitialized) {
 198       return;
 199     }
 200     Initialize();
 201   }
 202
 203   void Initialize();
 204
 205   void RestoreSystemTheme();
 206   void InitializeGlobalSettings();
 207   // Returns whether we found an alternative theme.
 208   bool ConfigureAltTheme();
 209   void ConfigureAndInitializeAltTheme();
 210   void ConfigureFinalEffectiveTheme();
 211   void MaybeApplyAdwaitaOverrides();
 212 };
 213
 214 #endif