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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_CSS_MEDIA_VALUES_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_CSS_MEDIA_VALUES_H_
#include <optional>
#include "third_party/blink/public/mojom/css/preferred_color_scheme.mojom-blink-forward.h"
#include "third_party/blink/public/mojom/css/preferred_contrast.mojom-blink-forward.h"
#include "third_party/blink/public/mojom/device_posture/device_posture_provider.mojom-blink-forward.h"
#include "third_party/blink/public/mojom/manifest/display_mode.mojom-shared.h"
#include "third_party/blink/public/mojom/webpreferences/web_preferences.mojom-blink-forward.h"
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/css/container_state.h"
#include "third_party/blink/renderer/core/css/css_length_resolver.h"
#include "third_party/blink/renderer/core/css/css_primitive_value.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/text/text_direction.h"
#include "third_party/blink/renderer/platform/text/writing_mode.h"
#include "ui/base/mojom/window_show_state.mojom-blink-forward.h"
#include "ui/base/pointer/pointer_device.h"
namespace blink {
class CSSPrimitiveValue;
class Document;
class Element;
class LocalFrame;
enum class CSSValueID;
enum class ColorSpaceGamut;
enum class ForcedColors;
enum class NavigationControls;
enum class Scripting;
mojom::blink::PreferredColorScheme CSSValueIDToPreferredColorScheme(
CSSValueID id);
mojom::blink::PreferredContrast CSSValueIDToPreferredContrast(CSSValueID);
ForcedColors CSSValueIDToForcedColors(CSSValueID id);
class CORE_EXPORT MediaValues : public GarbageCollected<MediaValues>,
public CSSLengthResolver {
public:
MediaValues() : CSSLengthResolver(1.0f /* zoom */) {}
virtual ~MediaValues() = default;
virtual void Trace(Visitor* visitor) const {}
static MediaValues* CreateDynamicIfFrameExists(LocalFrame*);
template <typename T>
bool ComputeLength(double value,
CSSPrimitiveValue::UnitType type,
T& result) const {
double temp_result;
if (!ComputeLengthImpl(value, type, temp_result)) {
return false;
}
result = ClampTo<T>(temp_result);
return true;
}
std::optional<double> InlineSize() const;
std::optional<double> BlockSize() const;
virtual std::optional<double> Width() const { return ViewportWidth(); }
virtual std::optional<double> Height() const { return ViewportHeight(); }
virtual int DeviceWidth() const = 0;
virtual int DeviceHeight() const = 0;
virtual float DevicePixelRatio() const = 0;
virtual bool DeviceSupportsHDR() const = 0;
virtual int ColorBitsPerComponent() const = 0;
virtual int MonochromeBitsPerComponent() const = 0;
virtual bool InvertedColors() const = 0;
virtual mojom::blink::PointerType PrimaryPointerType() const = 0;
virtual int AvailablePointerTypes() const = 0;
virtual mojom::blink::HoverType PrimaryHoverType() const = 0;
virtual mojom::blink::OutputDeviceUpdateAbilityType
OutputDeviceUpdateAbilityType() const = 0;
virtual int AvailableHoverTypes() const = 0;
virtual bool ThreeDEnabled() const = 0;
virtual const String MediaType() const = 0;
virtual blink::mojom::DisplayMode DisplayMode() const = 0;
virtual ui::mojom::blink::WindowShowState WindowShowState() const = 0;
virtual bool Resizable() const = 0;
virtual bool StrictMode() const = 0;
virtual Document* GetDocument() const = 0;
virtual bool HasValues() const = 0;
virtual ColorSpaceGamut ColorGamut() const = 0;
virtual mojom::blink::PreferredColorScheme GetPreferredColorScheme()
const = 0;
virtual mojom::blink::PreferredContrast GetPreferredContrast() const = 0;
virtual bool PrefersReducedMotion() const = 0;
virtual bool PrefersReducedData() const = 0;
virtual bool PrefersReducedTransparency() const = 0;
virtual ForcedColors GetForcedColors() const = 0;
virtual NavigationControls GetNavigationControls() const = 0;
virtual int GetHorizontalViewportSegments() const = 0;
virtual int GetVerticalViewportSegments() const = 0;
virtual mojom::blink::DevicePostureType GetDevicePosture() const = 0;
// For evaluating scroll-state(stuck: left), scroll-state(stuck: right)
virtual ContainerStuckPhysical StuckHorizontal() const {
return ContainerStuckPhysical::kNo;
}
// For evaluating scroll-state(stuck: top), scroll-state(stuck: bottom)
virtual ContainerStuckPhysical StuckVertical() const {
return ContainerStuckPhysical::kNo;
}
// For evaluating scroll-state(stuck: inline-start),
// scroll-state(stuck: inline-end)
virtual ContainerStuckLogical StuckInline() const {
return ContainerStuckLogical::kNo;
}
// For evaluating scroll-state(stuck: block-start),
// scroll-state(stuck: block-end)
virtual ContainerStuckLogical StuckBlock() const {
return ContainerStuckLogical::kNo;
}
// For boolean context evaluation.
bool Stuck() const {
return StuckHorizontal() != ContainerStuckPhysical::kNo ||
StuckVertical() != ContainerStuckPhysical::kNo;
}
virtual ContainerSnappedFlags SnappedFlags() const {
return static_cast<ContainerSnappedFlags>(ContainerSnapped::kNone);
}
// For evaluating scroll-state(snapped: x/y)
bool SnappedX() const {
return SnappedFlags() &
static_cast<ContainerSnappedFlags>(ContainerSnapped::kX);
}
bool SnappedY() const {
return SnappedFlags() &
static_cast<ContainerSnappedFlags>(ContainerSnapped::kY);
}
// For evaluating scroll-state(snapped: block/inline)
bool SnappedBlock() const;
bool SnappedInline() const;
// For boolean context evaluation.
bool Snapped() const {
return SnappedFlags() !=
static_cast<ContainerSnappedFlags>(ContainerSnapped::kNone);
}
// For evaluating scroll-state(scrollable: left/right)
virtual ContainerScrollableFlags ScrollableHorizontal() const {
return static_cast<ContainerScrollableFlags>(ContainerScrollable::kNone);
}
// For evaluating scroll-state(scrollable: top/bottom)
virtual ContainerScrollableFlags ScrollableVertical() const {
return static_cast<ContainerScrollableFlags>(ContainerScrollable::kNone);
}
// For evaluating scroll-state(scrollable: inline-start/inline-end)
virtual ContainerScrollableFlags ScrollableInline() const {
return static_cast<ContainerScrollableFlags>(ContainerScrollable::kNone);
}
// For evaluating scroll-state(scrollable: block-start/block-end)
virtual ContainerScrollableFlags ScrollableBlock() const {
return static_cast<ContainerScrollableFlags>(ContainerScrollable::kNone);
}
// For boolean context evaluation
bool Scrollable() const {
return ScrollableHorizontal() != static_cast<ContainerScrollableFlags>(
ContainerScrollable::kNone) ||
ScrollableVertical() != static_cast<ContainerScrollableFlags>(
ContainerScrollable::kNone);
}
// For evaluating scroll-state(scroll-direction: left/right)
virtual ContainerScrollDirection ScrollDirectionHorizontal() const {
return ContainerScrollDirection::kNone;
}
// For evaluating scroll-state(scroll-direction: up/down)
virtual ContainerScrollDirection ScrollDirectionVertical() const {
return ContainerScrollDirection::kNone;
}
// For evaluating scroll-state(scroll-direction: inline-start/inline-end)
virtual ContainerScrollDirection ScrollDirectionInline() const {
return ContainerScrollDirection::kNone;
}
// For evaluating scroll-state(scroll-direction: block-start/block-end)
virtual ContainerScrollDirection ScrollDirectionBlock() const {
return ContainerScrollDirection::kNone;
}
// For boolean context evaluation
bool ScrollDirection() const {
return ScrollDirectionHorizontal() != ContainerScrollDirection::kNone ||
ScrollDirectionVertical() != ContainerScrollDirection::kNone;
}
// Return the currently applied position-try-fallback for an anchored element.
// 0 means no position-try-fallback is applied. Otherwise a 1-based index into
// the list of fallbacks of the computed position-try-fallbacks property.
virtual int AnchoredFallback() const { NOTREACHED(); }
// Returns the container element used to retrieve base style and parent style
// when computing the computed value of a style() container query.
virtual Element* ContainerElement() const { return nullptr; }
virtual Scripting GetScripting() const = 0;
// CSSLengthResolver override.
void ReferenceTreeScope() const override {}
void ReferenceAnchor() const override {}
void ReferenceSibling() const override {}
Element* GetElement() const override { NOTREACHED(); }
protected:
static double CalculateViewportWidth(LocalFrame*);
static double CalculateViewportHeight(LocalFrame*);
static double CalculateSmallViewportWidth(LocalFrame*);
static double CalculateSmallViewportHeight(LocalFrame*);
static double CalculateLargeViewportWidth(LocalFrame*);
static double CalculateLargeViewportHeight(LocalFrame*);
static double CalculateDynamicViewportWidth(LocalFrame*);
static double CalculateDynamicViewportHeight(LocalFrame*);
static float CalculateEmSize(LocalFrame*);
static float CalculateExSize(LocalFrame*);
static float CalculateChSize(LocalFrame*);
static float CalculateIcSize(LocalFrame*);
static float CalculateCapSize(LocalFrame*);
static float CalculateLineHeight(LocalFrame*);
static int CalculateDeviceWidth(LocalFrame*);
static int CalculateDeviceHeight(LocalFrame*);
static bool CalculateStrictMode(LocalFrame*);
static float CalculateDevicePixelRatio(LocalFrame*);
static bool CalculateDeviceSupportsHDR(LocalFrame*);
static int CalculateColorBitsPerComponent(LocalFrame*);
static int CalculateMonochromeBitsPerComponent(LocalFrame*);
static bool CalculateInvertedColors(LocalFrame*);
static const String CalculateMediaType(LocalFrame*);
static blink::mojom::DisplayMode CalculateDisplayMode(LocalFrame*);
static ui::mojom::blink::WindowShowState CalculateWindowShowState(
LocalFrame*);
static bool CalculateResizable(LocalFrame*);
static bool CalculateThreeDEnabled(LocalFrame*);
static mojom::blink::PointerType CalculatePrimaryPointerType(LocalFrame*);
static int CalculateAvailablePointerTypes(LocalFrame*);
static mojom::blink::HoverType CalculatePrimaryHoverType(LocalFrame*);
static mojom::blink::OutputDeviceUpdateAbilityType
CalculateOutputDeviceUpdateAbilityType(LocalFrame*);
static int CalculateAvailableHoverTypes(LocalFrame*);
static ColorSpaceGamut CalculateColorGamut(LocalFrame*);
static mojom::blink::PreferredColorScheme CalculatePreferredColorScheme(
LocalFrame*);
static mojom::blink::PreferredContrast CalculatePreferredContrast(
LocalFrame*);
static bool CalculatePrefersReducedMotion(LocalFrame*);
static bool CalculatePrefersReducedData(LocalFrame*);
static bool CalculatePrefersReducedTransparency(LocalFrame*);
static ForcedColors CalculateForcedColors(LocalFrame*);
static NavigationControls CalculateNavigationControls(LocalFrame*);
static int CalculateHorizontalViewportSegments(LocalFrame*);
static int CalculateVerticalViewportSegments(LocalFrame*);
static mojom::blink::DevicePostureType CalculateDevicePosture(LocalFrame*);
static Scripting CalculateScripting(LocalFrame*);
bool ComputeLengthImpl(double value,
CSSPrimitiveValue::UnitType,
double& result) const;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_CSS_MEDIA_VALUES_H_
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