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+/* -*- Mode: C++; tab-width: 2; 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_Theme_h
+#define mozilla_widget_Theme_h
+
+#include "Units.h"
+#include "mozilla/gfx/2D.h"
+#include "mozilla/gfx/Rect.h"
+#include "mozilla/gfx/Types.h"
+#include "nsITheme.h"
+#include "nsNativeTheme.h"
+#include "ScrollbarDrawing.h"
+
+namespace mozilla {
+
+enum class StyleSystemColor : uint8_t;
+
+namespace widget {
+
+class Theme : protected nsNativeTheme, public nsITheme {
+ protected:
+ using sRGBColor = gfx::sRGBColor;
+ using DrawTarget = gfx::DrawTarget;
+ using Path = gfx::Path;
+ using Rect = gfx::Rect;
+ using Point = gfx::Point;
+ using RectCornerRadii = gfx::RectCornerRadii;
+ using Colors = ThemeColors;
+ using AccentColor = ThemeAccentColor;
+ using ElementState = dom::ElementState;
+
+ public:
+ explicit Theme(UniquePtr<ScrollbarDrawing>&& aScrollbarDrawing)
+ : mScrollbarDrawing(std::move(aScrollbarDrawing)) {
+ mScrollbarDrawing->RecomputeScrollbarParams();
+ }
+
+ static void Init();
+ static void Shutdown();
+ static void LookAndFeelChanged();
+
+ using DPIRatio = CSSToLayoutDeviceScale;
+
+ NS_DECL_ISUPPORTS_INHERITED
+
+ // The nsITheme interface.
+ NS_IMETHOD DrawWidgetBackground(gfxContext* aContext, nsIFrame*,
+ StyleAppearance, const nsRect& aRect,
+ const nsRect& aDirtyRect,
+ DrawOverflow) override;
+
+ bool CreateWebRenderCommandsForWidget(
+ wr::DisplayListBuilder& aBuilder, wr::IpcResourceUpdateQueue& aResources,
+ const layers::StackingContextHelper& aSc,
+ layers::RenderRootStateManager* aManager, nsIFrame*, StyleAppearance,
+ const nsRect& aRect) override;
+
+ // PaintBackendData will be either a DrawTarget, or a WebRenderBackendData.
+ //
+ // The return value represents whether the widget could be painted with the
+ // given back-end.
+ template <typename PaintBackendData>
+ bool DoDrawWidgetBackground(PaintBackendData&, nsIFrame*, StyleAppearance,
+ const nsRect&, DrawOverflow);
+
+ [[nodiscard]] LayoutDeviceIntMargin GetWidgetBorder(nsDeviceContext* aContext,
+ nsIFrame*,
+ StyleAppearance) override;
+ bool GetWidgetPadding(nsDeviceContext* aContext, nsIFrame*, StyleAppearance,
+ LayoutDeviceIntMargin* aResult) override;
+ bool GetWidgetOverflow(nsDeviceContext* aContext, nsIFrame*, StyleAppearance,
+ nsRect* aOverflowRect) override;
+ LayoutDeviceIntSize GetMinimumWidgetSize(nsPresContext*, nsIFrame*,
+ StyleAppearance) override;
+ Transparency GetWidgetTransparency(nsIFrame*, StyleAppearance) override;
+ NS_IMETHOD WidgetStateChanged(nsIFrame*, StyleAppearance, nsAtom* aAttribute,
+ bool* aShouldRepaint,
+ const nsAttrValue* aOldValue) override;
+ NS_IMETHOD ThemeChanged() override;
+ bool WidgetAppearanceDependsOnWindowFocus(StyleAppearance) override;
+ /*bool NeedToClearBackgroundBehindWidget(
+ nsIFrame*, StyleAppearance) override;*/
+ ThemeGeometryType ThemeGeometryTypeForWidget(nsIFrame*,
+ StyleAppearance) override;
+ bool ThemeSupportsWidget(nsPresContext*, nsIFrame*, StyleAppearance) override;
+ bool WidgetIsContainer(StyleAppearance) override;
+ bool ThemeDrawsFocusForWidget(nsIFrame*, StyleAppearance) override;
+ bool ThemeNeedsComboboxDropmarker() override;
+
+ LayoutDeviceIntCoord GetScrollbarSize(const nsPresContext*,
+ StyleScrollbarWidth, Overlay) final;
+
+ nscoord GetCheckboxRadioPrefSize() override;
+
+ static UniquePtr<ScrollbarDrawing> ScrollbarStyle();
+
+ protected:
+ virtual ~Theme() = default;
+
+ DPIRatio GetDPIRatio(nsPresContext*, StyleAppearance);
+ DPIRatio GetDPIRatio(nsIFrame*, StyleAppearance);
+
+ std::tuple<sRGBColor, sRGBColor, sRGBColor> ComputeCheckboxColors(
+ const ElementState&, StyleAppearance, const Colors&);
+ enum class OutlineCoversBorder : bool { No, Yes };
+ sRGBColor ComputeBorderColor(const ElementState&, const Colors&,
+ OutlineCoversBorder);
+
+ std::pair<sRGBColor, sRGBColor> ComputeButtonColors(const ElementState&,
+ const Colors&,
+ nsIFrame* = nullptr);
+ std::pair<sRGBColor, sRGBColor> ComputeTextfieldColors(const ElementState&,
+ const Colors&,
+ OutlineCoversBorder);
+ std::pair<sRGBColor, sRGBColor> ComputeRangeProgressColors(
+ const ElementState&, const Colors&);
+ std::pair<sRGBColor, sRGBColor> ComputeRangeTrackColors(const ElementState&,
+ const Colors&);
+ std::pair<sRGBColor, sRGBColor> ComputeRangeThumbColors(const ElementState&,
+ const Colors&);
+ std::pair<sRGBColor, sRGBColor> ComputeProgressColors(const Colors&);
+ std::pair<sRGBColor, sRGBColor> ComputeProgressTrackColors(const Colors&);
+ std::pair<sRGBColor, sRGBColor> ComputeMeterchunkColors(
+ const ElementState& aMeterState, const Colors&);
+ std::array<sRGBColor, 3> ComputeFocusRectColors(const Colors&);
+
+ template <typename PaintBackendData>
+ void PaintRoundedFocusRect(PaintBackendData&, const LayoutDeviceRect&,
+ const Colors&, DPIRatio, CSSCoord aRadius,
+ CSSCoord aOffset);
+ template <typename PaintBackendData>
+ void PaintAutoStyleOutline(nsIFrame*, PaintBackendData&,
+ const LayoutDeviceRect&, const Colors&, DPIRatio);
+
+ void PaintCheckboxControl(DrawTarget& aDrawTarget, const LayoutDeviceRect&,
+ const ElementState&, const Colors&, DPIRatio);
+ void PaintCheckMark(DrawTarget&, const LayoutDeviceRect&, const sRGBColor&);
+ void PaintIndeterminateMark(DrawTarget&, const LayoutDeviceRect&,
+ const sRGBColor&);
+
+ template <typename PaintBackendData>
+ void PaintStrokedCircle(PaintBackendData&, const LayoutDeviceRect&,
+ const sRGBColor& aBackgroundColor,
+ const sRGBColor& aBorderColor,
+ const CSSCoord aBorderWidth, DPIRatio);
+ void PaintCircleShadow(DrawTarget&, const LayoutDeviceRect& aBoxRect,
+ const LayoutDeviceRect& aClipRect, float aShadowAlpha,
+ const CSSPoint& aShadowOffset,
+ CSSCoord aShadowBlurStdDev, DPIRatio);
+ void PaintCircleShadow(WebRenderBackendData&,
+ const LayoutDeviceRect& aBoxRect,
+ const LayoutDeviceRect& aClipRect, float aShadowAlpha,
+ const CSSPoint& aShadowOffset,
+ CSSCoord aShadowBlurStdDev, DPIRatio);
+ template <typename PaintBackendData>
+ void PaintRadioControl(PaintBackendData&, const LayoutDeviceRect&,
+ const ElementState&, const Colors&, DPIRatio);
+ template <typename PaintBackendData>
+ void PaintRadioCheckmark(PaintBackendData&, const LayoutDeviceRect&,
+ const ElementState&, DPIRatio);
+ template <typename PaintBackendData>
+ void PaintTextField(PaintBackendData&, const LayoutDeviceRect&,
+ const ElementState&, const Colors&, DPIRatio);
+ template <typename PaintBackendData>
+ void PaintListbox(PaintBackendData&, const LayoutDeviceRect&,
+ const ElementState&, const Colors&, DPIRatio);
+ template <typename PaintBackendData>
+ void PaintMenulist(PaintBackendData&, const LayoutDeviceRect&,
+ const ElementState&, const Colors&, DPIRatio);
+ void PaintMenulistArrowButton(nsIFrame*, DrawTarget&, const LayoutDeviceRect&,
+ const ElementState&);
+ void PaintSpinnerButton(nsIFrame*, DrawTarget&, const LayoutDeviceRect&,
+ const ElementState&, StyleAppearance, const Colors&,
+ DPIRatio);
+ template <typename PaintBackendData>
+ void PaintRange(nsIFrame*, PaintBackendData&, const LayoutDeviceRect&,
+ const ElementState&, const Colors&, DPIRatio,
+ bool aHorizontal);
+ template <typename PaintBackendData>
+ void PaintProgress(nsIFrame*, PaintBackendData&, const LayoutDeviceRect&,
+ const ElementState&, const Colors&, DPIRatio,
+ bool aIsMeter);
+ template <typename PaintBackendData>
+ void PaintButton(nsIFrame*, PaintBackendData&, const LayoutDeviceRect&,
+ const ElementState&, const Colors&, DPIRatio);
+
+ static void PrefChangedCallback(const char*, void*) {
+ LookAndFeel::NotifyChangedAllWindows(ThemeChangeKind::Layout);
+ }
+
+ void SetScrollbarDrawing(UniquePtr<ScrollbarDrawing>&& aScrollbarDrawing) {
+ mScrollbarDrawing = std::move(aScrollbarDrawing);
+ mScrollbarDrawing->RecomputeScrollbarParams();
+ }
+ ScrollbarDrawing& GetScrollbarDrawing() const { return *mScrollbarDrawing; }
+ UniquePtr<ScrollbarDrawing> mScrollbarDrawing;
+
+ bool ThemeSupportsScrollbarButtons() override;
+};
+
+} // namespace widget
+} // namespace mozilla
+
+#endif