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// Copyright (c) 2012 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.
#include "content/browser/renderer_host/ui_events_helper.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebInputEvent.h"
#include "ui/base/events/event.h"
#include "ui/base/events/event_constants.h"
namespace {
int WebModifiersToUIFlags(int modifiers) {
int flags = ui::EF_NONE;
if (modifiers & WebKit::WebInputEvent::ShiftKey)
flags |= ui::EF_SHIFT_DOWN;
if (modifiers & WebKit::WebInputEvent::ControlKey)
flags |= ui::EF_CONTROL_DOWN;
if (modifiers & WebKit::WebInputEvent::AltKey)
flags |= ui::EF_ALT_DOWN;
if (modifiers & WebKit::WebInputEvent::LeftButtonDown)
flags |= ui::EF_LEFT_MOUSE_BUTTON;
if (modifiers & WebKit::WebInputEvent::RightButtonDown)
flags |= ui::EF_RIGHT_MOUSE_BUTTON;
if (modifiers & WebKit::WebInputEvent::MiddleButtonDown)
flags |= ui::EF_MIDDLE_MOUSE_BUTTON;
if (modifiers & WebKit::WebInputEvent::CapsLockOn)
flags |= ui::EF_CAPS_LOCK_DOWN;
return flags;
}
ui::EventType WebTouchPointStateToEventType(
WebKit::WebTouchPoint::State state) {
switch (state) {
case WebKit::WebTouchPoint::StateReleased:
return ui::ET_TOUCH_RELEASED;
case WebKit::WebTouchPoint::StatePressed:
return ui::ET_TOUCH_PRESSED;
case WebKit::WebTouchPoint::StateMoved:
return ui::ET_TOUCH_MOVED;
case WebKit::WebTouchPoint::StateCancelled:
return ui::ET_TOUCH_CANCELLED;
default:
return ui::ET_UNKNOWN;
}
}
} // namespace
namespace content {
bool MakeUITouchEventsFromWebTouchEvents(const WebKit::WebTouchEvent& touch,
ScopedVector<ui::TouchEvent>* list) {
ui::EventType type = ui::ET_UNKNOWN;
switch (touch.type) {
case WebKit::WebInputEvent::TouchStart:
type = ui::ET_TOUCH_PRESSED;
break;
case WebKit::WebInputEvent::TouchEnd:
type = ui::ET_TOUCH_RELEASED;
break;
case WebKit::WebInputEvent::TouchMove:
type = ui::ET_TOUCH_MOVED;
break;
case WebKit::WebInputEvent::TouchCancel:
type = ui::ET_TOUCH_CANCELLED;
break;
default:
NOTREACHED();
return false;
}
int flags = WebModifiersToUIFlags(touch.modifiers);
base::TimeDelta timestamp = base::TimeDelta::FromMicroseconds(
static_cast<int64>(touch.timeStampSeconds * 1000000));
for (unsigned i = 0; i < touch.touchesLength; ++i) {
const WebKit::WebTouchPoint& point = touch.touches[i];
if (WebTouchPointStateToEventType(point.state) != type)
continue;
// In aura, the touch-event needs to be in the screen coordinate, since the
// touch-event is routed to RootWindow first. In Windows, on the other hand,
// the touch-event is dispatched directly to the gesture-recognizer, so the
// location needs to be in the local coordinate space.
#if defined(USE_AURA)
gfx::Point location(point.screenPosition.x, point.screenPosition.y);
#else
gfx::Point location(point.position.x, point.position.y);
#endif
ui::TouchEvent* uievent = new ui::TouchEvent(type,
location,
flags,
point.id,
timestamp,
point.radiusX,
point.radiusY,
point.rotationAngle,
point.force);
list->push_back(uievent);
}
return true;
}
} // namespace content
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