webkit/support/web_gesture_curve_mock.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "webkit/support/web_gesture_curve_mock.h"
   6
   7 #include "third_party/WebKit/public/platform/WebFloatSize.h"
   8 #include "third_party/WebKit/public/platform/WebGestureCurveTarget.h"
   9 #include "webkit/support/weburl_loader_mock_factory.h"
  10
  11 WebGestureCurveMock::WebGestureCurveMock(const WebKit::WebFloatPoint& velocity,
  12     const WebKit::WebSize& cumulative_scroll)
  13     : velocity_(velocity),
  14       cumulative_scroll_(cumulative_scroll) {
  15 }
  16
  17 WebGestureCurveMock::~WebGestureCurveMock() {
  18 }
  19
  20 bool WebGestureCurveMock::apply(double time,
  21                                 WebKit::WebGestureCurveTarget* target) {
  22   WebKit::WebSize displacement(velocity_.x * time, velocity_.y * time);
  23   WebKit::WebFloatSize increment(displacement.width - cumulative_scroll_.width,
  24       displacement.height - cumulative_scroll_.height);
  25   cumulative_scroll_ = displacement;
  26   target->notifyCurrentFlingVelocity(WebKit::WebFloatSize(velocity_.x,
  27                                                           velocity_.y));
  28   // scrollBy() could delete this curve if the animation is over, so don't
  29   // touch any member variables after making that call.
  30   target->scrollBy(increment);
  31   return true;
  32 }