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// Copyright 2014 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.
#import <Cocoa/Cocoa.h>
#include "ui/events/events_export.h"
namespace ui {
// Conversion between wheel delta amounts and number of pixels to scroll.
constexpr double kScrollbarPixelsPerCocoaTick = 40.0;
// Converts the Cocoa |modifiers| bitsum into a ui::EventFlags bitsum.
EVENTS_EXPORT int EventFlagsFromModifiers(NSUInteger modifiers);
// Retrieves a bitsum of ui::EventFlags represented by |event|,
// but instead use the modifier flags given by |modifiers|,
// which is the same format as |-NSEvent modifierFlags|. This allows
// substitution of the modifiers without having to create a new event from
// scratch.
EVENTS_EXPORT int EventFlagsFromNSEventWithModifiers(NSEvent* event,
NSUInteger modifiers);
// Returns true for |NSKeyUp| and for |NSFlagsChanged| when modifier key was
// released.
EVENTS_EXPORT bool IsKeyUpEvent(NSEvent* event);
} // namespace ui