aura-touch: Refactor some code so that both cros and win-aura can share some code.

content/browser/renderer_host/web_input_event_aurax11.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.
 
 // Portions based heavily on:
 // third_party/WebKit/Source/WebKit/chromium/public/gtk/WebInputEventFactory.cpp
 //
 /*
  * Copyright (C) 2006-2011 Google Inc. All rights reserved.
  *
@@ skipping 26 matching lines @@
 
 #include "content/browser/renderer_host/web_input_event_aura.h"
 
 #include <X11/keysym.h>
 #include <X11/Xlib.h>
 #include <X11/Xutil.h>
 #include <cstdlib>
 
 #include "base/event_types.h"
 #include "base/logging.h"
+#include "content/browser/renderer_host/ui_events_helper.h"
 #include "ui/base/events/event.h"
 #include "ui/base/events/event_constants.h"
 #include "ui/base/keycodes/keyboard_code_conversion_x.h"
 #include "ui/base/keycodes/keyboard_codes.h"
 
 namespace content {
 
 // chromium WebKit does not provide a WebInputEventFactory for X11, so we have
 // to do the work here ourselves.
 
@@ skipping 71 matching lines @@
       case ui::VKEY_RETURN:
         return 0x0A;
       // Returns 0 for all other keys to avoid inputting unexpected chars.
       default:
         break;
     }
   }
   return 0;
 }
 
-WebKit::WebTouchPoint::State TouchPointStateFromEvent(
-    const ui::TouchEvent* event) {
-  switch (event->type()) {
-    case ui::ET_TOUCH_PRESSED:
-      return WebKit::WebTouchPoint::StatePressed;
-    case ui::ET_TOUCH_RELEASED:
-      return WebKit::WebTouchPoint::StateReleased;
-    case ui::ET_TOUCH_MOVED:
-      return WebKit::WebTouchPoint::StateMoved;
-    case ui::ET_TOUCH_CANCELLED:
-      return WebKit::WebTouchPoint::StateCancelled;
-    default:
-      return WebKit::WebTouchPoint::StateUndefined;
-  }
-}
-
-WebKit::WebInputEvent::Type TouchEventTypeFromEvent(
-    const ui::TouchEvent* event) {
-  switch (event->type()) {
-    case ui::ET_TOUCH_PRESSED:
-      return WebKit::WebInputEvent::TouchStart;
-    case ui::ET_TOUCH_RELEASED:
-      return WebKit::WebInputEvent::TouchEnd;
-    case ui::ET_TOUCH_MOVED:
-      return WebKit::WebInputEvent::TouchMove;
-    case ui::ET_TOUCH_CANCELLED:
-      return WebKit::WebInputEvent::TouchCancel;
-    default:
-      return WebKit::WebInputEvent::Undefined;
-  }
-}
-
 }  // namespace
 
 WebKit::WebMouseWheelEvent MakeWebMouseWheelEventFromAuraEvent(
     ui::MouseWheelEvent* event) {
   WebKit::WebMouseWheelEvent webkit_event;
 
   webkit_event.type = WebKit::WebInputEvent::MouseWheel;
   webkit_event.button = WebKit::WebMouseEvent::ButtonNone;
   webkit_event.modifiers = EventFlagsToWebEventModifiers(event->flags());
   webkit_event.timeStampSeconds = event->time_stamp().InSecondsF();
@@ skipping 182 matching lines @@
     default:
       NOTREACHED() << "Unknown gesture type: " << event->type();
   }
 
   gesture_event.modifiers = EventFlagsToWebEventModifiers(event->flags());
   gesture_event.timeStampSeconds = event->time_stamp().InSecondsF();
 
   return gesture_event;
 }
 
-WebKit::WebTouchPoint* UpdateWebTouchEventFromAuraEvent(
-    ui::TouchEvent* event, WebKit::WebTouchEvent* web_event) {
-  WebKit::WebTouchPoint* point = NULL;
-  switch (event->type()) {
-    case ui::ET_TOUCH_PRESSED:
-      // Add a new touch point.
-      if (web_event->touchesLength < WebKit::WebTouchEvent::touchesLengthCap) {
-        point = &web_event->touches[web_event->touchesLength++];
-        point->id = event->touch_id();
-      }
-      break;
-    case ui::ET_TOUCH_RELEASED:
-    case ui::ET_TOUCH_CANCELLED:
-    case ui::ET_TOUCH_MOVED: {
-      // The touch point should have been added to the event from an earlier
-      // _PRESSED event. So find that.
-      // At the moment, only a maximum of 4 touch-points are allowed. So a
-      // simple loop should be sufficient.
-      for (unsigned i = 0; i < web_event->touchesLength; ++i) {
-        point = web_event->touches + i;
-        if (point->id == event->touch_id())
-          break;
-        point = NULL;
-      }
-      break;
-    }
-    default:
-      DLOG(WARNING) << "Unknown touch event " << event->type();
-      break;
-  }
-
-  if (!point)
-    return NULL;
-
-  // The spec requires the radii values to be positive (and 1 when unknown).
-  point->radiusX = std::max(1.f, event->radius_x());
-  point->radiusY = std::max(1.f, event->radius_y());
-  point->rotationAngle = event->rotation_angle();
-  point->force = event->force();
-
-  // Update the location and state of the point.
-  point->state = TouchPointStateFromEvent(event);
-  if (point->state == WebKit::WebTouchPoint::StateMoved) {
-    // It is possible for badly written touch drivers to emit Move events even
-    // when the touch location hasn't changed. In such cases, consume the event
-    // and pretend nothing happened.
-    if (point->position.x == event->x() && point->position.y == event->y())
-      return NULL;
-  }
-  point->position.x = event->x();
-  point->position.y = event->y();
-
-  const gfx::Point root_point = event->root_location();
-  point->screenPosition.x = root_point.x();
-  point->screenPosition.y = root_point.y();
-
-  // Mark the rest of the points as stationary.
-  for (unsigned i = 0; i < web_event->touchesLength; ++i) {
-    WebKit::WebTouchPoint* iter = web_event->touches + i;
-    if (iter != point)
-      iter->state = WebKit::WebTouchPoint::StateStationary;
-  }
-
-  // Update the type of the touch event.
-  web_event->type = TouchEventTypeFromEvent(event);
-  web_event->timeStampSeconds = event->time_stamp().InSecondsF();
-  web_event->modifiers = EventFlagsToWebEventModifiers(event->flags());
-
-  return point;
-}
-
 }  // namespace content