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   NS_IMETHOD GetMinimumWidgetSize(nsPresContext* aPresContext, nsIFrame* aFrame,
  65                                   StyleAppearance aAppearance,
  66                                   LayoutDeviceIntSize* aResult,
  67                                   bool* aIsOverridable) override;
  68
  69   virtual Transparency GetWidgetTransparency(
  70       nsIFrame* aFrame, StyleAppearance aAppearance) override;
  71
  72   NS_IMETHOD WidgetStateChanged(nsIFrame* aFrame, StyleAppearance aAppearance,
  73                                 nsAtom* aAttribute, bool* aShouldRepaint,
  74                                 const nsAttrValue* aOldValue) override;
  75
  76   NS_IMETHOD ThemeChanged() override;
  77
  78   bool ThemeSupportsWidget(nsPresContext* aPresContext, nsIFrame* aFrame,
  79                            StyleAppearance aAppearance) override;
  80
  81   bool WidgetIsContainer(StyleAppearance aAppearance) override;
  82
  83   bool ThemeDrawsFocusForWidget(nsIFrame*, StyleAppearance) override;
  84
  85   bool ThemeWantsButtonInnerFocusRing(nsIFrame*, StyleAppearance) override {
  86     return true;
  87   }
  88
  89   bool ThemeNeedsComboboxDropmarker() override;
  90
  91   bool WidgetAppearanceDependsOnWindowFocus(StyleAppearance) override;
  92
  93   enum { eThemeGeometryTypeWindowButtons = eThemeGeometryTypeUnknown + 1 };
  94   ThemeGeometryType ThemeGeometryTypeForWidget(nsIFrame*,
  95                                                StyleAppearance) override;
  96
  97   nsNativeThemeWin();
  98
  99  protected:
 100   Maybe<nsUXThemeClass> GetThemeClass(StyleAppearance aAppearance);
 101   HANDLE GetTheme(StyleAppearance aAppearance);
 102   nsresult GetThemePartAndState(nsIFrame* aFrame, StyleAppearance aAppearance,
 103                                 int32_t& aPart, int32_t& aState);
 104   nsresult ClassicGetThemePartAndState(nsIFrame* aFrame,
 105                                        StyleAppearance aAppearance,
 106                                        int32_t& aPart, int32_t& aState,
 107                                        bool& aFocused);
 108   nsresult ClassicDrawWidgetBackground(gfxContext* aContext, nsIFrame* aFrame,
 109                                        StyleAppearance aAppearance,
 110                                        const nsRect& aRect,
 111                                        const nsRect& aClipRect);
 112   [[nodiscard]] LayoutDeviceIntMargin ClassicGetWidgetBorder(
 113       nsDeviceContext* aContext, nsIFrame* aFrame, StyleAppearance aAppearance);
 114   bool ClassicGetWidgetPadding(nsDeviceContext* aContext, nsIFrame* aFrame,
 115                                StyleAppearance aAppearance,
 116                                LayoutDeviceIntMargin* aResult);
 117   nsresult ClassicGetMinimumWidgetSize(nsIFrame* aFrame,
 118                                        StyleAppearance aAppearance,
 119                                        LayoutDeviceIntSize* aResult,
 120                                        bool* aIsOverridable);
 121   bool ClassicThemeSupportsWidget(nsIFrame* aFrame,
 122                                   StyleAppearance aAppearance);
 123   void DrawCheckedRect(HDC hdc, const RECT& rc, int32_t fore, int32_t back,
 124                        HBRUSH defaultBack);
 125   uint32_t GetWidgetNativeDrawingFlags(StyleAppearance aAppearance);
 126   int32_t StandardGetState(nsIFrame* aFrame, StyleAppearance aAppearance,
 127                            bool wantFocused);
 128   bool IsMenuActive(nsIFrame* aFrame, StyleAppearance aAppearance);
 129   RECT CalculateProgressOverlayRect(nsIFrame* aFrame, RECT* aWidgetRect,
 130                                     bool aIsVertical, bool aIsIndeterminate,
 131                                     bool aIsClassic);
 132   void DrawThemedProgressMeter(nsIFrame* aFrame, StyleAppearance aAppearance,
 133                                HANDLE aTheme, HDC aHdc, int aPart, int aState,
 134                                RECT* aWidgetRect, RECT* aClipRect);
 135
 136   [[nodiscard]] LayoutDeviceIntMargin GetCachedWidgetBorder(
 137       HANDLE aTheme, nsUXThemeClass aThemeClass, StyleAppearance aAppearance,
 138       int32_t aPart, int32_t aState);
 139
 140   nsresult GetCachedMinimumWidgetSize(nsIFrame* aFrame, HANDLE aTheme,
 141                                       nsUXThemeClass aThemeClass,
 142                                       StyleAppearance aAppearance,
 143                                       int32_t aPart, int32_t aState,
 144                                       THEMESIZE aSizeReq,
 145                                       LayoutDeviceIntSize* aResult);
 146
 147   SIZE GetCachedGutterSize(HANDLE theme);
 148
 149  private:
 150   TimeStamp mProgressDeterminateTimeStamp;
 151   TimeStamp mProgressIndeterminateTimeStamp;
 152
 153   // eUXNumClasses * THEME_PART_DISTINCT_VALUE_COUNT is about 800 at the time of
 154   // writing this, and nsIntMargin is 16 bytes wide, which makes this cache (1/8
 155   // + 16) * 800 bytes, or about ~12KB. We could probably reduce this cache to
 156   // 3KB by caching on the aAppearance value instead, but there would be some
 157   // uncacheable values, since we derive some theme parts from other arguments.
 158   uint8_t
 159       mBorderCacheValid[(eUXNumClasses * THEME_PART_DISTINCT_VALUE_COUNT + 7) /
 160                         8];
 161   LayoutDeviceIntMargin
 162       mBorderCache[eUXNumClasses * THEME_PART_DISTINCT_VALUE_COUNT];
 163
 164   // See the above not for mBorderCache and friends. However
 165   // LayoutDeviceIntSize is half the size of nsIntMargin, making the
 166   // cache roughly half as large. In total the caches should come to about 18KB.
 167   uint8_t mMinimumWidgetSizeCacheValid
 168       [(eUXNumClasses * THEME_PART_DISTINCT_VALUE_COUNT + 7) / 8];
 169   LayoutDeviceIntSize
 170       mMinimumWidgetSizeCache[eUXNumClasses * THEME_PART_DISTINCT_VALUE_COUNT];
 171
 172   bool mGutterSizeCacheValid;
 173   SIZE mGutterSizeCache;
 174 };
 175
 176 }  // namespace mozilla::widget
 177
 178 #endif