chromium/third_party/blink/renderer/core/paint/timing/text_paint_timing_detector.h

// Copyright 2018 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_PAINT_TIMING_TEXT_PAINT_TIMING_DETECTOR_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_PAINT_TIMING_TEXT_PAINT_TIMING_DETECTOR_H_

#include <memory>

#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/dom/node.h"
#include "third_party/blink/renderer/core/paint/timing/lcp_objects.h"
#include "third_party/blink/renderer/core/paint/timing/text_element_timing.h"
#include "third_party/blink/renderer/platform/heap/collection_support/heap_hash_map.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "ui/gfx/geometry/rect_conversions.h"

namespace blink {
class LayoutBoxModelObject;
class LocalFrameView;
class PropertyTreeStateOrAlias;
class TextElementTiming;
class TracedValue;

class TextRecord final : public GarbageCollected<TextRecord> { … };

class CORE_EXPORT LargestTextPaintManager final
    : public GarbageCollected<LargestTextPaintManager> { … };

// TextPaintTimingDetector contains Largest Text Paint and support for Text
// Element Timing.
//
// Largest Text Paint timing measures when the largest text element gets painted
// within the viewport. Specifically, it:
// 1. Tracks all texts' first paints. If the text may be a largest text or is
// required by Element Timing, it records the visual size and paint time.
// 2. It keeps track of information regarding the largest text paint seen so
// far. Because the new version of LCP includes removed content, this record may
// only increase in size over time. See also this doc, which is now somewhat
// outdated: http://bit.ly/fcp_plus_plus.
class CORE_EXPORT TextPaintTimingDetector final
    : public GarbageCollected<TextPaintTimingDetector> { … };

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_CORE_PAINT_TIMING_TEXT_PAINT_TIMING_DETECTOR_H_