ScrollbarDrawingWin.h

Enable keyboard shortcuts

/* -*- Mode: C++; tab-width: 40; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef mozilla_widget_ScrollbarDrawingWin_h

#define mozilla_widget_ScrollbarDrawingWin_h

#include "nsITheme.h"

#include "nsNativeTheme.h"

#include "ScrollbarDrawing.h"

namespace mozilla::widget {

class ScrollbarDrawingWin : public ScrollbarDrawing {

 protected:

  explicit ScrollbarDrawingWin(Kind aKind) : ScrollbarDrawing(aKind) {}

 public:

  ScrollbarDrawingWin() : ScrollbarDrawingWin(Kind::Win10) {}

  virtual ~ScrollbarDrawingWin() = default;

  LayoutDeviceIntSize GetMinimumWidgetSize(nsPresContext*,

                                           StyleAppearance aAppearance,

                                           nsIFrame* aFrame) override;

  Maybe<nsITheme::Transparency> GetScrollbarPartTransparency(

      nsIFrame* aFrame, StyleAppearance aAppearance) override;

  template <typename PaintBackendData>

  bool DoPaintScrollbarThumb(PaintBackendData&, const LayoutDeviceRect&,

                             ScrollbarKind, nsIFrame*, const ComputedStyle&,

                             const ElementState& aElementState,

                             const DocumentState& aDocumentState, const Colors&,

                             const DPIRatio&);

  bool PaintScrollbarThumb(DrawTarget&, const LayoutDeviceRect&, ScrollbarKind,

                           nsIFrame*, const ComputedStyle&,

                           const ElementState& aElementState,

                           const DocumentState& aDocumentState, const Colors&,

                           const DPIRatio&) override;

  bool PaintScrollbarThumb(WebRenderBackendData&, const LayoutDeviceRect&,

                           ScrollbarKind, nsIFrame*, const ComputedStyle&,

                           const ElementState& aElementState,

                           const DocumentState& aDocumentState, const Colors&,

                           const DPIRatio&) override;

  void RecomputeScrollbarParams() override;

};

static constexpr uint32_t kDefaultWinScrollbarSize = 17;

}  // namespace mozilla::widget

#endif