widget/ScrollbarDrawingWin.h

   1 /* -*- Mode: C++; tab-width: 40; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #ifndef mozilla_widget_ScrollbarDrawingWin_h
   7 #define mozilla_widget_ScrollbarDrawingWin_h
   8
   9 #include "nsITheme.h"
  10 #include "nsNativeTheme.h"
  11 #include "ScrollbarDrawing.h"
  12
  13 namespace mozilla::widget {
  14
  15 class ScrollbarDrawingWin : public ScrollbarDrawing {
  16  public:
  17   ScrollbarDrawingWin() = default;
  18   virtual ~ScrollbarDrawingWin() = default;
  19
  20   LayoutDeviceIntSize GetMinimumWidgetSize(nsPresContext*,
  21                                            StyleAppearance aAppearance,
  22                                            nsIFrame* aFrame) override;
  23
  24   Maybe<nsITheme::Transparency> GetScrollbarPartTransparency(
  25       nsIFrame* aFrame, StyleAppearance aAppearance) override;
  26
  27   static ComputedStyle* GetCustomScrollbarStyle(nsIFrame* aFrame,
  28                                                 bool* aDarkScrollbar = nullptr);
  29
  30   template <typename PaintBackendData>
  31   bool DoPaintScrollbarThumb(PaintBackendData&, const LayoutDeviceRect&,
  32                              bool aHorizontal, nsIFrame*, const ComputedStyle&,
  33                              const EventStates& aElementState,
  34                              const EventStates& aDocumentState, const Colors&,
  35                              const DPIRatio&);
  36   bool PaintScrollbarThumb(DrawTarget&, const LayoutDeviceRect&,
  37                            bool aHorizontal, nsIFrame*, const ComputedStyle&,
  38                            const EventStates& aElementState,
  39                            const EventStates& aDocumentState, const Colors&,
  40                            const DPIRatio&) override;
  41   bool PaintScrollbarThumb(WebRenderBackendData&, const LayoutDeviceRect&,
  42                            bool aHorizontal, nsIFrame*, const ComputedStyle&,
  43                            const EventStates& aElementState,
  44                            const EventStates& aDocumentState, const Colors&,
  45                            const DPIRatio&) override;
  46
  47   void RecomputeScrollbarParams() override;
  48 };
  49
  50 }  // namespace mozilla::widget
  51
  52 #endif