gecko-dev/widget/ScrollbarDrawingCocoa.h
Emilio Cobos Álvarez 604d8268b2 Bug 1813046 - Simplify scrollbar sizing code. r=spohl
This removes the capability of having differently-sized vertical and
horizontal scrollbars (which is only potentially used in windows, and in
practice almost-never used). For that case, we choose the larger of
vertical/horizontal scrollbar sizes.

This is in order to be able to realistically expose the scrollbar size
to CSS, see blocked bug.

We make RecomputeScrollbarParams the central place where each scrollbar
style decides its sizes, and make GetDPIRatioForScrollbarPart handle the
cocoa special-case of scaling to 1 or 2, but nothing else.

Differential Revision: https://phabricator.services.mozilla.com/D168080
2023-01-28 21:35:51 +00:00

77 lines
3.6 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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_ScrollbarDrawingCocoa_h
#define mozilla_widget_ScrollbarDrawingCocoa_h
#include "ScrollbarDrawing.h"
#include "mozilla/Array.h"
namespace mozilla::widget {
class ScrollbarDrawingCocoa final : public ScrollbarDrawing {
public:
ScrollbarDrawingCocoa() : ScrollbarDrawing(Kind::Cocoa) {}
virtual ~ScrollbarDrawingCocoa() = default;
LayoutDeviceIntSize GetMinimumWidgetSize(nsPresContext*,
StyleAppearance aAppearance,
nsIFrame* aFrame) override;
static CSSIntCoord GetScrollbarSize(StyleScrollbarWidth, bool aOverlay);
template <typename PaintBackendData>
void DoPaintScrollbarThumb(PaintBackendData&, const LayoutDeviceRect& aRect,
ScrollbarKind, nsIFrame* aFrame,
const ComputedStyle& aStyle, const ElementState&,
const DocumentState&, const Colors&,
const DPIRatio&);
bool PaintScrollbarThumb(DrawTarget&, const LayoutDeviceRect&, ScrollbarKind,
nsIFrame*, const ComputedStyle&, const ElementState&,
const DocumentState&, const Colors&,
const DPIRatio&) override;
bool PaintScrollbarThumb(WebRenderBackendData&, const LayoutDeviceRect&,
ScrollbarKind, nsIFrame*, const ComputedStyle&,
const ElementState&, const DocumentState&,
const Colors&, const DPIRatio&) override;
template <typename PaintBackendData>
void DoPaintScrollbarTrack(PaintBackendData&, const LayoutDeviceRect&,
ScrollbarKind, nsIFrame*, const ComputedStyle&,
const DocumentState&, const Colors&,
const DPIRatio&);
bool PaintScrollbarTrack(DrawTarget&, const LayoutDeviceRect& aRect,
ScrollbarKind, nsIFrame* aFrame,
const ComputedStyle& aStyle, const DocumentState&,
const Colors&, const DPIRatio&) override;
bool PaintScrollbarTrack(WebRenderBackendData&, const LayoutDeviceRect& aRect,
ScrollbarKind, nsIFrame* aFrame,
const ComputedStyle& aStyle, const DocumentState&,
const Colors&, const DPIRatio&) override;
template <typename PaintBackendData>
void DoPaintScrollCorner(PaintBackendData&, const LayoutDeviceRect&,
ScrollbarKind, nsIFrame*, const ComputedStyle&,
const DocumentState&, const Colors&,
const DPIRatio&);
bool PaintScrollCorner(DrawTarget&, const LayoutDeviceRect&, ScrollbarKind,
nsIFrame*, const ComputedStyle&, const DocumentState&,
const Colors&, const DPIRatio&) override;
bool PaintScrollCorner(WebRenderBackendData&, const LayoutDeviceRect&,
ScrollbarKind, nsIFrame*, const ComputedStyle&,
const DocumentState&, const Colors&,
const DPIRatio&) override;
void RecomputeScrollbarParams() override;
bool ShouldDrawScrollbarButtons() override { return false; }
};
} // namespace mozilla::widget
#endif