1/*
2 * Copyright (C) 2017 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "PerformanceLoggingClient.h"
28
29#include "ScrollingCoordinator.h"
30#include <wtf/text/StringBuilder.h>
31
32namespace WebCore {
33
34String PerformanceLoggingClient::synchronousScrollingReasonsAsString(SynchronousScrollingReasons synchronousScrollingReasons)
35{
36 if (!synchronousScrollingReasons)
37 return emptyString();
38
39 StringBuilder reasons;
40
41 if (synchronousScrollingReasons & ScrollingCoordinator::ForcedOnMainThread)
42 reasons.appendLiteral("forced,");
43 if (synchronousScrollingReasons & ScrollingCoordinator::HasSlowRepaintObjects)
44 reasons.appendLiteral("slow-repaint objects,");
45 if (synchronousScrollingReasons & ScrollingCoordinator::HasViewportConstrainedObjectsWithoutSupportingFixedLayers)
46 reasons.appendLiteral("viewport-constrained objects,");
47 if (synchronousScrollingReasons & ScrollingCoordinator::HasNonLayerViewportConstrainedObjects)
48 reasons.appendLiteral("non-layer viewport-constrained objects,");
49 if (synchronousScrollingReasons & ScrollingCoordinator::IsImageDocument)
50 reasons.appendLiteral("image document,");
51
52 // Strip the trailing comma.
53 return reasons.toString().left(reasons.length() - 1);
54}
55
56} // namespace WebCore
57