widget/windows/nsNativeThemeWin.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
   2  *
   3  * This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef nsNativeThemeWin_h
   8 #define nsNativeThemeWin_h
   9
  10 #include <windows.h>
  11
  12 #include "mozilla/Maybe.h"
  13 #include "mozilla/TimeStamp.h"
  14 #include "Theme.h"
  15 #include "nsUXThemeConstants.h"
  16 #include "nsUXThemeData.h"
  17
  18 namespace mozilla::widget {
  19
  20 class nsNativeThemeWin : public Theme {
  21  protected:
  22   virtual ~nsNativeThemeWin();
  23
  24  public:
  25   // Whether we draw a non-native widget.
  26   //
  27   // We always draw scrollbars as non-native so that all of Firefox has
  28   // consistent scrollbar styles both in chrome and content (plus, the
  29   // non-native scrollbars support scrollbar-width, auto-darkening...).
  30   //
  31   // We draw other widgets as non-native when their color-scheme is dark.  In
  32   // that case (`BecauseColorMismatch`) we don't call into the non-native theme
  33   // for sizing information (GetWidgetPadding/Border and GetMinimumWidgetSize),
  34   // to avoid subtle sizing changes. The non-native theme can basically draw at
  35   // any size, so we prefer to have consistent sizing information.
  36   enum class NonNative { No, Always, BecauseColorMismatch };
  37   NonNative IsWidgetNonNative(nsIFrame*, StyleAppearance);
  38
  39   // The nsITheme interface.
  40   NS_IMETHOD DrawWidgetBackground(gfxContext* aContext, nsIFrame* aFrame,
  41                                   StyleAppearance aAppearance,
  42                                   const nsRect& aRect, const nsRect& aDirtyRect,
  43                                   DrawOverflow) override;
  44
  45   bool CreateWebRenderCommandsForWidget(wr::DisplayListBuilder&,
  46                                         wr::IpcResourceUpdateQueue&,
  47                                         const layers::StackingContextHelper&,
  48                                         layers::RenderRootStateManager*,
  49                                         nsIFrame*, StyleAppearance,
  50                                         const nsRect&) override;
  51
  52   [[nodiscard]] LayoutDeviceIntMargin GetWidgetBorder(
  53       nsDeviceContext* aContext, nsIFrame* aFrame,
  54       StyleAppearance aAppearance) override;
  55
  56   bool GetWidgetPadding(nsDeviceContext* aContext, nsIFrame* aFrame,
  57                         StyleAppearance aAppearance,
  58                         LayoutDeviceIntMargin* aResult) override;
  59
  60   virtual bool GetWidgetOverflow(nsDeviceContext* aContext, nsIFrame* aFrame,
  61                                  StyleAppearance aAppearance,
  62                                  nsRect* aOverflowRect) override;
  63
  64   LayoutDeviceIntSize GetMinimumWidgetSize(
  65       nsPresContext* aPresContext, nsIFrame* aFrame,
  66       StyleAppearance aAppearance) override;
  67
  68   virtual Transparency GetWidgetTransparency(
  69       nsIFrame* aFrame, StyleAppearance aAppearance) override;
  70
  71   NS_IMETHOD WidgetStateChanged(nsIFrame* aFrame, StyleAppearance aAppearance,
  72                                 nsAtom* aAttribute, bool* aShouldRepaint,
  73                                 const nsAttrValue* aOldValue) override;
  74
  75   NS_IMETHOD ThemeChanged() override;
  76
  77   bool ThemeSupportsWidget(nsPresContext* aPresContext, nsIFrame* aFrame,
  78                            StyleAppearance aAppearance) override;
  79
  80   bool WidgetIsContainer(StyleAppearance aAppearance) override;
  81
  82   bool ThemeDrawsFocusForWidget(nsIFrame*, StyleAppearance) override;
  83
  84   bool ThemeWantsButtonInnerFocusRing(nsIFrame*, StyleAppearance) override {
  85     return true;
  86   }
  87
  88   bool ThemeNeedsComboboxDropmarker() override;
  89
  90   bool WidgetAppearanceDependsOnWindowFocus(StyleAppearance) override;
  91
  92   enum { eThemeGeometryTypeWindowButtons = eThemeGeometryTypeUnknown + 1 };
  93   ThemeGeometryType ThemeGeometryTypeForWidget(nsIFrame*,
  94                                                StyleAppearance) override;
  95
  96   nsNativeThemeWin();
  97
  98  protected:
  99   Maybe<nsUXThemeClass> GetThemeClass(StyleAppearance aAppearance);
 100   HANDLE GetTheme(StyleAppearance aAppearance);
 101   nsresult GetThemePartAndState(nsIFrame* aFrame, StyleAppearance aAppearance,
 102                                 int32_t& aPart, int32_t& aState);
 103   nsresult ClassicGetThemePartAndState(nsIFrame* aFrame,
 104                                        StyleAppearance aAppearance,
 105                                        int32_t& aPart, int32_t& aState,
 106                                        bool& aFocused);
 107   nsresult ClassicDrawWidgetBackground(gfxContext* aContext, nsIFrame* aFrame,
 108                                        StyleAppearance aAppearance,
 109                                        const nsRect& aRect,
 110                                        const nsRect& aClipRect);
 111   [[nodiscard]] LayoutDeviceIntMargin ClassicGetWidgetBorder(
 112       nsDeviceContext* aContext, nsIFrame* aFrame, StyleAppearance aAppearance);
 113   bool ClassicGetWidgetPadding(nsDeviceContext* aContext, nsIFrame* aFrame,
 114                                StyleAppearance aAppearance,
 115                                LayoutDeviceIntMargin* aResult);
 116   LayoutDeviceIntSize ClassicGetMinimumWidgetSize(nsIFrame* aFrame,
 117                                                   StyleAppearance aAppearance);
 118   bool ClassicThemeSupportsWidget(nsIFrame* aFrame,
 119                                   StyleAppearance aAppearance);
 120   void DrawCheckedRect(HDC hdc, const RECT& rc, int32_t fore, int32_t back,
 121                        HBRUSH defaultBack);
 122   uint32_t GetWidgetNativeDrawingFlags(StyleAppearance aAppearance);
 123   int32_t StandardGetState(nsIFrame* aFrame, StyleAppearance aAppearance,
 124                            bool wantFocused);
 125   bool IsMenuActive(nsIFrame* aFrame, StyleAppearance aAppearance);
 126   RECT CalculateProgressOverlayRect(nsIFrame* aFrame, RECT* aWidgetRect,
 127                                     bool aIsVertical, bool aIsIndeterminate,
 128                                     bool aIsClassic);
 129   void DrawThemedProgressMeter(nsIFrame* aFrame, StyleAppearance aAppearance,
 130                                HANDLE aTheme, HDC aHdc, int aPart, int aState,
 131                                RECT* aWidgetRect, RECT* aClipRect);
 132
 133   [[nodiscard]] LayoutDeviceIntMargin GetCachedWidgetBorder(
 134       HANDLE aTheme, nsUXThemeClass aThemeClass, StyleAppearance aAppearance,
 135       int32_t aPart, int32_t aState);
 136
 137   nsresult GetCachedMinimumWidgetSize(nsIFrame* aFrame, HANDLE aTheme,
 138                                       nsUXThemeClass aThemeClass,
 139                                       StyleAppearance aAppearance,
 140                                       int32_t aPart, int32_t aState,
 141                                       THEMESIZE aSizeReq,
 142                                       LayoutDeviceIntSize* aResult);
 143
 144   SIZE GetCachedGutterSize(HANDLE theme);
 145
 146  private:
 147   TimeStamp mProgressDeterminateTimeStamp;
 148   TimeStamp mProgressIndeterminateTimeStamp;
 149
 150   // eUXNumClasses * THEME_PART_DISTINCT_VALUE_COUNT is about 800 at the time of
 151   // writing this, and nsIntMargin is 16 bytes wide, which makes this cache (1/8
 152   // + 16) * 800 bytes, or about ~12KB. We could probably reduce this cache to
 153   // 3KB by caching on the aAppearance value instead, but there would be some
 154   // uncacheable values, since we derive some theme parts from other arguments.
 155   uint8_t
 156       mBorderCacheValid[(eUXNumClasses * THEME_PART_DISTINCT_VALUE_COUNT + 7) /
 157                         8];
 158   LayoutDeviceIntMargin
 159       mBorderCache[eUXNumClasses * THEME_PART_DISTINCT_VALUE_COUNT];
 160
 161   // See the above not for mBorderCache and friends. However
 162   // LayoutDeviceIntSize is half the size of nsIntMargin, making the
 163   // cache roughly half as large. In total the caches should come to about 18KB.
 164   uint8_t mMinimumWidgetSizeCacheValid
 165       [(eUXNumClasses * THEME_PART_DISTINCT_VALUE_COUNT + 7) / 8];
 166   LayoutDeviceIntSize
 167       mMinimumWidgetSizeCache[eUXNumClasses * THEME_PART_DISTINCT_VALUE_COUNT];
 168
 169   bool mGutterSizeCacheValid;
 170   SIZE mGutterSizeCache;
 171 };
 172
 173 }  // namespace mozilla::widget
 174
 175 #endif