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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef MediaValues_h
#define MediaValues_h
#include "core/CoreExport.h"
#include "core/css/CSSPrimitiveValue.h"
#include "platform/heap/Handle.h"
#include "public/platform/PointerProperties.h"
#include "public/platform/ShapeProperties.h"
#include "public/platform/WebDisplayMode.h"
namespace blink {
class Document;
class CSSPrimitiveValue;
class LocalFrame;
enum class ColorSpaceGamut;
class CORE_EXPORT MediaValues : public GarbageCollectedFinalized<MediaValues> {
virtual ~MediaValues() = default;
virtual void Trace(blink::Visitor* visitor) {}
static MediaValues* CreateDynamicIfFrameExists(LocalFrame*);
virtual MediaValues* Copy() const = 0;
static bool ComputeLengthImpl(double value,
unsigned default_font_size,
double viewport_width,
double viewport_height,
double& result);
template <typename T>
static bool ComputeLength(double value,
CSSPrimitiveValue::UnitType type,
unsigned default_font_size,
double viewport_width,
double viewport_height,
T& result) {
double temp_result;
if (!ComputeLengthImpl(value, type, default_font_size, viewport_width,
viewport_height, temp_result))
return false;
result = clampTo<T>(temp_result);
return true;
virtual bool ComputeLength(double value,
int& result) const = 0;
virtual bool ComputeLength(double value,
double& result) const = 0;
virtual double ViewportWidth() const = 0;
virtual double ViewportHeight() const = 0;
virtual int DeviceWidth() const = 0;
virtual int DeviceHeight() const = 0;
virtual float DevicePixelRatio() const = 0;
virtual int ColorBitsPerComponent() const = 0;
virtual int MonochromeBitsPerComponent() const = 0;
virtual PointerType PrimaryPointerType() const = 0;
virtual int AvailablePointerTypes() const = 0;
virtual HoverType PrimaryHoverType() const = 0;
virtual int AvailableHoverTypes() const = 0;
virtual bool ThreeDEnabled() const = 0;
virtual const String MediaType() const = 0;
virtual WebDisplayMode DisplayMode() const = 0;
virtual bool StrictMode() const = 0;
virtual Document* GetDocument() const = 0;
virtual bool HasValues() const = 0;
virtual void OverrideViewportDimensions(double width, double height) = 0;
virtual DisplayShape GetDisplayShape() const = 0;
virtual ColorSpaceGamut ColorGamut() const = 0;
static double CalculateViewportWidth(LocalFrame*);
static double CalculateViewportHeight(LocalFrame*);
static int CalculateDeviceWidth(LocalFrame*);
static int CalculateDeviceHeight(LocalFrame*);
static bool CalculateStrictMode(LocalFrame*);
static float CalculateDevicePixelRatio(LocalFrame*);
static int CalculateColorBitsPerComponent(LocalFrame*);
static int CalculateMonochromeBitsPerComponent(LocalFrame*);
static int CalculateDefaultFontSize(LocalFrame*);
static const String CalculateMediaType(LocalFrame*);
static WebDisplayMode CalculateDisplayMode(LocalFrame*);
static bool CalculateThreeDEnabled(LocalFrame*);
static PointerType CalculatePrimaryPointerType(LocalFrame*);
static int CalculateAvailablePointerTypes(LocalFrame*);
static HoverType CalculatePrimaryHoverType(LocalFrame*);
static int CalculateAvailableHoverTypes(LocalFrame*);
static DisplayShape CalculateDisplayShape(LocalFrame*);
static ColorSpaceGamut CalculateColorGamut(LocalFrame*);
} // namespace blink
#endif // MediaValues_h