src/content/renderer/render_view_impl_android.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 "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
  12 namespace content {
  13
  14 // Check content::TopControlsState and cc::TopControlsState are kept in sync.
  15 COMPILE_ASSERT(int(SHOWN) == int(cc::SHOWN), mismatching_enums);
  16 COMPILE_ASSERT(int(HIDDEN) == int(cc::HIDDEN), mismatching_enums);
  17 COMPILE_ASSERT(int(BOTH) == int(cc::BOTH), mismatching_enums);
  18
  19 cc::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.
  25 void 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
  43 void 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
  54 void 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