Now that we are doing a hard-cut-over to Aura, remove a bunch of *Views based classes that are ob...

chrome/browser/renderer_host/render_widget_host_view_views_touch.cc

-// Copyright (c) 2011 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 "chrome/browser/renderer_host/render_widget_host_view_views.h"
-
-#include <gdk/gdkx.h>
-#include <gtk/gtk.h>
-
-#include "base/logging.h"
-#include "content/browser/renderer_host/gtk_window_utils.h"
-#include "content/browser/renderer_host/render_widget_host.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/gtk/WebInputEventFactory.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebScreenInfo.h"
-#include "views/widget/widget.h"
-
-static const char kRenderWidgetHostViewKey[] = "__RENDER_WIDGET_HOST_VIEW__";
-
-using WebKit::WebInputEventFactory;
-using WebKit::WebTouchEvent;
-
-namespace {
-
-WebKit::WebTouchPoint::State TouchPointStateFromEvent(
-    const views::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 views::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;
-  }
-}
-
-inline void UpdateTouchParams(const views::TouchEvent& event,
-                              WebKit::WebTouchPoint* tpoint) {
-  tpoint->radiusX = event.radius_x();
-  tpoint->radiusY = event.radius_y();
-  tpoint->rotationAngle = event.rotation_angle();
-  tpoint->force = event.force();
-}
-
-void UpdateTouchPointPosition(const views::TouchEvent* event,
-                              const gfx::Point& origin,
-                              WebKit::WebTouchPoint* tpoint) {
-  tpoint->position.x = event->x();
-  tpoint->position.y = event->y();
-
-  tpoint->screenPosition.x = tpoint->position.x + origin.x();
-  tpoint->screenPosition.y = tpoint->position.y + origin.y();
-}
-
-}  // namespace
-
-ui::TouchStatus RenderWidgetHostViewViews::OnTouchEvent(
-    const views::TouchEvent& event) {
-  if (!host_)
-    return ui::TOUCH_STATUS_UNKNOWN;
-
-  // Update the list of touch points first.
-  WebKit::WebTouchPoint* point = NULL;
-  ui::TouchStatus status = ui::TOUCH_STATUS_UNKNOWN;
-
-  switch (event.type()) {
-    case ui::ET_TOUCH_PRESSED:
-      // Add a new touch point.
-      if (touch_event_.touchesLength <
-          WebTouchEvent::touchesLengthCap) {
-        point = &touch_event_.touches[touch_event_.touchesLength++];
-        point->id = event.identity();
-
-        if (touch_event_.touchesLength == 1) {
-          // A new touch sequence has started.
-          status = ui::TOUCH_STATUS_START;
-
-          // We also want the focus.
-          RequestFocus();
-
-          // Confirm existing composition text on touch press events, to make
-          // sure the input caret won't be moved with an ongoing composition
-          // text.
-          FinishImeCompositionSession();
-        }
-      }
-      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 < touch_event_.touchesLength; ++i) {
-        point = touch_event_.touches + i;
-        if (point->id == event.identity()) {
-          break;
-        }
-        point = NULL;
-      }
-      break;
-    }
-    default:
-      DLOG(WARNING) << "Unknown touch event " << event.type();
-      break;
-  }
-
-  if (!point)
-    return ui::TOUCH_STATUS_UNKNOWN;
-
-  if (status != ui::TOUCH_STATUS_START)
-    status = ui::TOUCH_STATUS_CONTINUE;
-
-  UpdateTouchParams(event, point);
-
-  // 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 status;
-    }
-  }
-  UpdateTouchPointPosition(&event, GetMirroredPosition(), point);
-
-  // Mark the rest of the points as stationary.
-  for (unsigned i = 0; i < touch_event_.touchesLength; ++i) {
-    WebKit::WebTouchPoint* iter = touch_event_.touches + i;
-    if (iter != point) {
-      iter->state = WebKit::WebTouchPoint::StateStationary;
-    }
-  }
-
-  // Update the type of the touch event.
-  touch_event_.type = TouchEventTypeFromEvent(&event);
-  touch_event_.timeStampSeconds = base::Time::Now().ToDoubleT();
-
-  // The event and all the touches have been updated. Dispatch.
-  host_->ForwardTouchEvent(touch_event_);
-
-  // If the touch was released, then remove it from the list of touch points.
-  if (event.type() == ui::ET_TOUCH_RELEASED) {
-    --touch_event_.touchesLength;
-    for (unsigned i = point - touch_event_.touches;
-         i < touch_event_.touchesLength;
-         ++i) {
-      touch_event_.touches[i] = touch_event_.touches[i + 1];
-    }
-    if (touch_event_.touchesLength == 0)
-      status = ui::TOUCH_STATUS_END;
-  } else if (event.type() == ui::ET_TOUCH_CANCELLED) {
-    status = ui::TOUCH_STATUS_CANCEL;
-  }
-
-  return status;
-}