third_party/WebKit/Source/core/css/MediaValuesDynamic.h

// 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 MediaValuesDynamic_h
#define MediaValuesDynamic_h

#include "core/css/MediaValues.h"

namespace blink {

class Document;

class MediaValuesDynamic final : public MediaValues {
 public:
  static MediaValues* create(Document&);
  static MediaValues* create(LocalFrame*);
  MediaValues* copy() const override;
  bool computeLength(double value,
                     CSSPrimitiveValue::UnitType,
                     int& result) const override;
  bool computeLength(double value,
                     CSSPrimitiveValue::UnitType,
                     double& result) const override;

  double viewportWidth() const override;
  double viewportHeight() const override;
  int deviceWidth() const override;
  int deviceHeight() const override;
  float devicePixelRatio() const override;
  int colorBitsPerComponent() const override;
  int monochromeBitsPerComponent() const override;
  PointerType primaryPointerType() const override;
  int availablePointerTypes() const override;
  HoverType primaryHoverType() const override;
  int availableHoverTypes() const override;
  bool threeDEnabled() const override;
  bool strictMode() const override;
  const String mediaType() const override;
  WebDisplayMode displayMode() const override;
  Document* document() const override;
  bool hasValues() const override;
  void overrideViewportDimensions(double width, double height) override;

  DECLARE_VIRTUAL_TRACE();

 protected:
  MediaValuesDynamic(LocalFrame*);
  MediaValuesDynamic(LocalFrame*,
                     bool overriddenViewportDimensions,
                     double viewportWidth,
                     double viewportHeight);

  // This raw ptr is safe, as MediaValues would not outlive MediaQueryEvaluator,
  // and MediaQueryEvaluator is reset on |Document::detachLayoutTree|.
  Member<LocalFrame> m_frame;
  bool m_viewportDimensionsOverridden;
  double m_viewportWidthOverride;
  double m_viewportHeightOverride;
};

}  // namespace blink

#endif  // MediaValuesDynamic_h