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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/input/web_touch_event_traits.h"
#include <stddef.h>
#include "base/check.h"
#include "base/notreached.h"
#include "third_party/blink/public/common/input/web_touch_event.h"
using blink::WebInputEvent;
using blink::WebTouchEvent;
using blink::WebTouchPoint;
namespace input {
bool WebTouchEventTraits::AllTouchPointsHaveState(
const WebTouchEvent& event,
blink::WebTouchPoint::State state) {
if (!event.touches_length)
return false;
for (size_t i = 0; i < event.touches_length; ++i) {
if (event.touches[i].state != state)
return false;
}
return true;
}
void WebTouchEventTraits::ResetType(WebInputEvent::Type type,
base::TimeTicks timestamp,
WebTouchEvent* event) {
DCHECK(WebInputEvent::IsTouchEventType(type));
DCHECK(type != WebInputEvent::Type::kTouchScrollStarted);
event->SetType(type);
event->dispatch_type = type == WebInputEvent::Type::kTouchCancel
? WebInputEvent::DispatchType::kEventNonBlocking
: WebInputEvent::DispatchType::kBlocking;
event->touch_start_or_first_touch_move &=
(type == WebInputEvent::Type::kTouchStart ||
type == WebInputEvent::Type::kTouchMove);
event->SetTimeStamp(timestamp);
}
void WebTouchEventTraits::ResetTypeAndTouchStates(WebInputEvent::Type type,
base::TimeTicks timestamp,
WebTouchEvent* event) {
ResetType(type, timestamp, event);
WebTouchPoint::State newState = WebTouchPoint::State::kStateUndefined;
switch (event->GetType()) {
case WebInputEvent::Type::kTouchStart:
newState = WebTouchPoint::State::kStatePressed;
break;
case WebInputEvent::Type::kTouchMove:
newState = WebTouchPoint::State::kStateMoved;
break;
case WebInputEvent::Type::kTouchEnd:
newState = WebTouchPoint::State::kStateReleased;
break;
case WebInputEvent::Type::kTouchCancel:
newState = WebTouchPoint::State::kStateCancelled;
break;
default:
NOTREACHED();
}
for (size_t i = 0; i < event->touches_length; ++i)
event->touches[i].state = newState;
}
} // namespace input
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