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overscroll_behavior.h
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overscroll_behavior.h
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// Copyright (c) 2017 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 CC_INPUT_OVERSCROLL_BEHAVIOR_H_
#define CC_INPUT_OVERSCROLL_BEHAVIOR_H_
#include "cc/cc_export.h"
namespace cc {
struct CC_EXPORT OverscrollBehavior {
enum OverscrollBehaviorType {
// Same as contain but also hint that no overscroll affordance should be
// triggered.
kOverscrollBehaviorTypeNone,
// Allows the default behavior for the user agent.
kOverscrollBehaviorTypeAuto,
// Hint to disable scroll chaining. The user agent may show an appropriate
// overscroll affordance.
kOverscrollBehaviorTypeContain,
kOverscrollBehaviorTypeMax = kOverscrollBehaviorTypeContain
};
OverscrollBehavior()
: x(kOverscrollBehaviorTypeAuto), y(kOverscrollBehaviorTypeAuto) {}
explicit OverscrollBehavior(OverscrollBehaviorType type) : x(type), y(type) {}
OverscrollBehavior(OverscrollBehaviorType x_type,
OverscrollBehaviorType y_type)
: x(x_type), y(y_type) {}
OverscrollBehaviorType x;
OverscrollBehaviorType y;
bool operator==(const OverscrollBehavior& a) const {
return (a.x == x) && (a.y == y);
}
bool operator!=(const OverscrollBehavior& a) const { return !(*this == a); }
};
} // namespace cc
#endif // CC_INPUT_OVERSCROLL_BEHAVIOR_H_