blob: 35c0c91354c4d38c2810276a49d457cb1e18c46e [file] [log] [blame]
// Copyright 2018 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.
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/dom/dom_high_res_time_stamp.h"
#include "third_party/blink/renderer/core/geometry/dom_rect_read_only.h"
#include "third_party/blink/renderer/core/timing/performance_entry.h"
namespace blink {
// The PerformanceElementTiming object exposes the time in which an element is
// first rendered on the screen and its intersection with the viewport at the
// time it is painted. Currently this is only done for <img> elements but other
// element types should be supported in the future.
class CORE_EXPORT PerformanceElementTiming final : public PerformanceEntry {
static PerformanceElementTiming* Create(const AtomicString& name,
const IntRect& intersection_rect,
DOMHighResTimeStamp start_time);
PerformanceElementTiming(const AtomicString& name,
const IntRect& intersection_rect,
DOMHighResTimeStamp start_time);
~PerformanceElementTiming() override;
AtomicString entryType() const override;
PerformanceEntryType EntryTypeEnum() const override;
DOMRectReadOnly* intersectionRect() const { return intersection_rect_; }
void Trace(blink::Visitor*) override;
void BuildJSONValue(V8ObjectBuilder&) const override;
Member<DOMRectReadOnly> intersection_rect_;
} // namespace blink