From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. Signed-off-by: Daniel Baumann --- .../apz/src/PotentialCheckerboardDurationTracker.h | 61 ++++++++++++++++++++++ 1 file changed, 61 insertions(+) create mode 100644 gfx/layers/apz/src/PotentialCheckerboardDurationTracker.h (limited to 'gfx/layers/apz/src/PotentialCheckerboardDurationTracker.h') diff --git a/gfx/layers/apz/src/PotentialCheckerboardDurationTracker.h b/gfx/layers/apz/src/PotentialCheckerboardDurationTracker.h new file mode 100644 index 0000000000..58786f32af --- /dev/null +++ b/gfx/layers/apz/src/PotentialCheckerboardDurationTracker.h @@ -0,0 +1,61 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=8 sts=2 et sw=2 tw=80: */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#ifndef mozilla_layers_PotentialCheckerboardDurationTracker_h +#define mozilla_layers_PotentialCheckerboardDurationTracker_h + +#include "mozilla/TimeStamp.h" + +namespace mozilla { +namespace layers { + +/** + * This class allows the owner to track the duration of time considered + * "potentially checkerboarding". This is the union of two possibly-intersecting + * sets of time periods. The first set is that in which checkerboarding was + * actually happening, since by definition it could potentially be happening. + * The second set is that in which the APZC is actively transforming content + * in the compositor, since it could potentially transform it so as to display + * checkerboarding to the user. + * The caller of this class calls the appropriate methods to indicate the start + * and stop of these two sets, and this class manages accumulating the union + * of the various durations. + */ +class PotentialCheckerboardDurationTracker { + public: + PotentialCheckerboardDurationTracker(); + + /** + * This should be called if checkerboarding is encountered. It can be called + * multiple times during a checkerboard event. + */ + void CheckerboardSeen(); + /** + * This should be called when checkerboarding is done. It must have been + * preceded by one or more calls to CheckerboardSeen(). + */ + void CheckerboardDone(bool aRecordTelemetry); + + /** + * This should be called at composition time, to indicate if the APZC is in + * a transforming state or not. + */ + void InTransform(bool aInTransform, bool aRecordTelemetry); + + private: + bool Tracking() const; + + private: + bool mInCheckerboard; + bool mInTransform; + + TimeStamp mCurrentPeriodStart; +}; + +} // namespace layers +} // namespace mozilla + +#endif // mozilla_layers_PotentialCheckerboardDurationTracker_h -- cgit v1.2.3