gesture recognizer: Remove the touch-event queue.

content/browser/renderer_host/ui_events_helper.cc

+// 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;
+}
+
+}  // 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];
+    ui::TouchEvent* uievent = new ui::TouchEvent(type,
+          gfx::Point(point.position.x, point.position.y),
+          flags,
+          point.id,
+          timestamp,
+          point.radiusX,
+          point.radiusY,
+          point.rotationAngle,
+          point.force);
+    list->push_back(uievent);
+  }
+  return true;
+}
+
+}  // namespace content