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 "content/renderer/render_view_impl.h"
6
7#include "base/command_line.h"
8#include "base/message_loop/message_loop.h"
9#include "cc/trees/layer_tree_host.h"
10#include "content/renderer/gpu/render_widget_compositor.h"
11
12namespace content {
13
14// Check content::TopControlsState and cc::TopControlsState are kept in sync.
15COMPILE_ASSERT(int(SHOWN) == int(cc::SHOWN), mismatching_enums);
16COMPILE_ASSERT(int(HIDDEN) == int(cc::HIDDEN), mismatching_enums);
17COMPILE_ASSERT(int(BOTH) == int(cc::BOTH), mismatching_enums);
18
19cc::TopControlsState ContentToCcTopControlsState(
20    TopControlsState state) {
21  return static_cast<cc::TopControlsState>(state);
22}
23
24// TODO(mvanouwerkerk): Stop calling this code path and delete it.
25void RenderViewImpl::OnUpdateTopControlsState(bool enable_hiding,
26                                              bool enable_showing,
27                                              bool animate) {
28  // TODO(tedchoc): Investigate why messages are getting here before the
29  //                compositor has been initialized.
30  LOG_IF(WARNING, !compositor_) << "OnUpdateTopControlsState was unhandled.";
31  if (compositor_) {
32    cc::TopControlsState constraints = cc::BOTH;
33    if (!enable_showing)
34      constraints = cc::HIDDEN;
35    if (!enable_hiding)
36      constraints = cc::SHOWN;
37    cc::TopControlsState current = cc::BOTH;
38    compositor_->UpdateTopControlsState(constraints, current, animate);
39    top_controls_constraints_ = constraints;
40  }
41}
42
43void RenderViewImpl::UpdateTopControlsState(TopControlsState constraints,
44                                            TopControlsState current,
45                                            bool animate) {
46  cc::TopControlsState constraints_cc =
47      ContentToCcTopControlsState(constraints);
48  cc::TopControlsState current_cc = ContentToCcTopControlsState(current);
49  if (compositor_)
50    compositor_->UpdateTopControlsState(constraints_cc, current_cc, animate);
51  top_controls_constraints_ = constraints_cc;
52}
53
54void RenderViewImpl::didScrollWithKeyboard(const WebKit::WebSize& delta) {
55  if (delta.height == 0)
56    return;
57  if (compositor_) {
58    cc::TopControlsState current = delta.height < 0 ? cc::SHOWN : cc::HIDDEN;
59    compositor_->UpdateTopControlsState(top_controls_constraints_,
60                                        current,
61                                        true);
62  }
63}
64
65}  // namespace content
66