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255763ef57
Add a dom/base/rust crate called just "dom" where we can share these. Most of the changes are automatic: s/mozilla::EventStates/mozilla::dom::ElementState/ s/EventStates/ElementState/ s/NS_EVENT_STATE_/ElementState::/ s/NS_DOCUMENT_STATE_/DocumentState::/ And so on. This requires a new cbindgen version to avoid ugly casts for large shifts. Differential Revision: https://phabricator.services.mozilla.com/D148537
168 lines
7.2 KiB
C++
168 lines
7.2 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_widget_ScrollbarDrawing_h
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#define mozilla_widget_ScrollbarDrawing_h
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#include "mozilla/dom/RustTypes.h"
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#include "mozilla/gfx/2D.h"
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#include "nsColor.h"
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#include "nsITheme.h"
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#include "ThemeColors.h"
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#include "ThemeDrawing.h"
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#include "Units.h"
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namespace mozilla::widget {
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class ScrollbarDrawing {
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protected:
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using DPIRatio = mozilla::CSSToLayoutDeviceScale;
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using ElementState = dom::ElementState;
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using DocumentState = dom::DocumentState;
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using DrawTarget = mozilla::gfx::DrawTarget;
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using sRGBColor = mozilla::gfx::sRGBColor;
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using Colors = ThemeColors;
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using ScrollbarSizes = nsITheme::ScrollbarSizes;
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using Overlay = nsITheme::Overlay;
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using WebRenderBackendData = mozilla::widget::WebRenderBackendData;
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enum class Kind : uint8_t {
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Android,
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Cocoa,
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Gtk,
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Win10,
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Win11,
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};
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explicit ScrollbarDrawing(Kind aKind) : mKind(aKind) {}
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public:
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virtual ~ScrollbarDrawing() = default;
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enum class ScrollbarKind : uint8_t {
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Horizontal,
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VerticalLeft,
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VerticalRight,
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};
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static DPIRatio GetDPIRatioForScrollbarPart(nsPresContext*);
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static nsIFrame* GetParentScrollbarFrame(nsIFrame* aFrame);
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static bool IsParentScrollbarRolledOver(nsIFrame* aFrame);
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static bool IsParentScrollbarHoveredOrActive(nsIFrame* aFrame);
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static bool IsScrollbarWidthThin(const ComputedStyle& aStyle);
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static bool IsScrollbarWidthThin(nsIFrame* aFrame);
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virtual ScrollbarSizes GetScrollbarSizes(nsPresContext*, StyleScrollbarWidth,
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Overlay);
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ScrollbarSizes GetScrollbarSizes(nsPresContext*, nsIFrame*);
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virtual LayoutDeviceIntSize GetMinimumWidgetSize(nsPresContext*,
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StyleAppearance aAppearance,
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nsIFrame* aFrame) = 0;
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virtual Maybe<nsITheme::Transparency> GetScrollbarPartTransparency(
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nsIFrame* aFrame, StyleAppearance aAppearance) {
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return Nothing();
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}
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bool IsScrollbarTrackOpaque(nsIFrame*);
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virtual sRGBColor ComputeScrollbarTrackColor(nsIFrame*, const ComputedStyle&,
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const DocumentState&,
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const Colors&);
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virtual sRGBColor ComputeScrollbarThumbColor(nsIFrame*, const ComputedStyle&,
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const ElementState&,
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const DocumentState&,
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const Colors&);
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nscolor GetScrollbarButtonColor(nscolor aTrackColor, ElementState);
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Maybe<nscolor> GetScrollbarArrowColor(nscolor aButtonColor);
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// Returned colors are button, arrow.
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virtual std::pair<sRGBColor, sRGBColor> ComputeScrollbarButtonColors(
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nsIFrame*, StyleAppearance, const ComputedStyle&, const ElementState&,
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const DocumentState&, const Colors&);
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virtual bool PaintScrollbarButton(DrawTarget&, StyleAppearance,
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const LayoutDeviceRect&, ScrollbarKind,
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nsIFrame*, const ComputedStyle&,
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const ElementState&, const DocumentState&,
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const Colors&, const DPIRatio&);
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virtual bool PaintScrollbarThumb(DrawTarget&, const LayoutDeviceRect&,
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ScrollbarKind, nsIFrame*,
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const ComputedStyle&, const ElementState&,
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const DocumentState&, const Colors&,
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const DPIRatio&) = 0;
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virtual bool PaintScrollbarThumb(WebRenderBackendData&,
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const LayoutDeviceRect&, ScrollbarKind,
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nsIFrame*, const ComputedStyle&,
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const ElementState&, const DocumentState&,
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const Colors&, const DPIRatio&) = 0;
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template <typename PaintBackendData>
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bool DoPaintDefaultScrollbar(PaintBackendData&, const LayoutDeviceRect&,
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ScrollbarKind, nsIFrame*, const ComputedStyle&,
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const ElementState&, const DocumentState&,
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const Colors&, const DPIRatio&);
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bool PaintScrollbar(DrawTarget&, const LayoutDeviceRect&, ScrollbarKind,
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nsIFrame*, const ComputedStyle&, const ElementState&,
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const DocumentState&, const Colors&, const DPIRatio&);
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bool PaintScrollbar(WebRenderBackendData&, const LayoutDeviceRect&,
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ScrollbarKind, nsIFrame*, const ComputedStyle&,
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const ElementState&, const DocumentState&, const Colors&,
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const DPIRatio&);
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virtual bool PaintScrollbarTrack(DrawTarget&, const LayoutDeviceRect&,
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ScrollbarKind, nsIFrame*,
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const ComputedStyle&, const DocumentState&,
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const Colors&, const DPIRatio&) {
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// Draw nothing by default. Subclasses can override this.
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return true;
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}
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virtual bool PaintScrollbarTrack(WebRenderBackendData&,
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const LayoutDeviceRect&, ScrollbarKind,
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nsIFrame*, const ComputedStyle&,
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const DocumentState&, const Colors&,
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const DPIRatio&) {
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// Draw nothing by default. Subclasses can override this.
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return true;
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}
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template <typename PaintBackendData>
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bool DoPaintDefaultScrollCorner(PaintBackendData&, const LayoutDeviceRect&,
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ScrollbarKind, nsIFrame*,
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const ComputedStyle&, const DocumentState&,
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const Colors&, const DPIRatio&);
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virtual bool PaintScrollCorner(DrawTarget&, const LayoutDeviceRect&,
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ScrollbarKind, nsIFrame*, const ComputedStyle&,
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const DocumentState&, const Colors&,
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const DPIRatio&);
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virtual bool PaintScrollCorner(WebRenderBackendData&, const LayoutDeviceRect&,
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ScrollbarKind, nsIFrame*, const ComputedStyle&,
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const DocumentState&, const Colors&,
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const DPIRatio&);
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virtual void RecomputeScrollbarParams() = 0;
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virtual bool ShouldDrawScrollbarButtons() { return true; }
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uint32_t GetHorizontalScrollbarHeight() const {
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return mHorizontalScrollbarHeight;
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}
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uint32_t GetVerticalScrollbarWidth() const { return mVerticalScrollbarWidth; }
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protected:
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// For some kind of style differences a full virtual method is overkill, so we
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// store the kind here so we can branch on it if necessary.
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Kind mKind;
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uint32_t mHorizontalScrollbarHeight = 0;
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uint32_t mVerticalScrollbarWidth = 0;
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};
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} // namespace mozilla::widget
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#endif
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