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  protected:
  17   explicit ScrollbarDrawingWin(Kind aKind) : ScrollbarDrawing(aKind) {}
  18
  19  public:
  20   ScrollbarDrawingWin() : ScrollbarDrawingWin(Kind::Win10) {}
  21
  22   virtual ~ScrollbarDrawingWin() = default;
  23
  24   LayoutDeviceIntSize GetMinimumWidgetSize(nsPresContext*,
  25                                            StyleAppearance aAppearance,
  26                                            nsIFrame* aFrame) override;
  27
  28   Maybe<nsITheme::Transparency> GetScrollbarPartTransparency(
  29       nsIFrame* aFrame, StyleAppearance aAppearance) override;
  30
  31   template <typename PaintBackendData>
  32   bool DoPaintScrollbarThumb(PaintBackendData&, const LayoutDeviceRect&,
  33                              ScrollbarKind, nsIFrame*, const ComputedStyle&,
  34                              const ElementState& aElementState,
  35                              const DocumentState& aDocumentState, const Colors&,
  36                              const DPIRatio&);
  37   bool PaintScrollbarThumb(DrawTarget&, const LayoutDeviceRect&, ScrollbarKind,
  38                            nsIFrame*, const ComputedStyle&,
  39                            const ElementState& aElementState,
  40                            const DocumentState& aDocumentState, const Colors&,
  41                            const DPIRatio&) override;
  42   bool PaintScrollbarThumb(WebRenderBackendData&, const LayoutDeviceRect&,
  43                            ScrollbarKind, nsIFrame*, const ComputedStyle&,
  44                            const ElementState& aElementState,
  45                            const DocumentState& aDocumentState, const Colors&,
  46                            const DPIRatio&) override;
  47
  48   void RecomputeScrollbarParams() override;
  49 };
  50
  51 static constexpr uint32_t kDefaultWinScrollbarSize = 17;
  52
  53 }  // namespace mozilla::widget
  54
  55 #endif