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      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/common/view_messages.h"
     11 #include "content/renderer/gpu/render_widget_compositor.h"
     12 #include "third_party/WebKit/public/web/WebView.h"
     13 
     14 namespace content {
     15 
     16 // Check content::TopControlsState and cc::TopControlsState are kept in sync.
     17 COMPILE_ASSERT(int(SHOWN) == int(cc::SHOWN), mismatching_enums);
     18 COMPILE_ASSERT(int(HIDDEN) == int(cc::HIDDEN), mismatching_enums);
     19 COMPILE_ASSERT(int(BOTH) == int(cc::BOTH), mismatching_enums);
     20 
     21 cc::TopControlsState ContentToCcTopControlsState(
     22     TopControlsState state) {
     23   return static_cast<cc::TopControlsState>(state);
     24 }
     25 
     26 // TODO(mvanouwerkerk): Stop calling this code path and delete it.
     27 void RenderViewImpl::OnUpdateTopControlsState(bool enable_hiding,
     28                                               bool enable_showing,
     29                                               bool animate) {
     30   // TODO(tedchoc): Investigate why messages are getting here before the
     31   //                compositor has been initialized.
     32   LOG_IF(WARNING, !compositor_) << "OnUpdateTopControlsState was unhandled.";
     33   if (compositor_) {
     34     cc::TopControlsState constraints = cc::BOTH;
     35     if (!enable_showing)
     36       constraints = cc::HIDDEN;
     37     if (!enable_hiding)
     38       constraints = cc::SHOWN;
     39     cc::TopControlsState current = cc::BOTH;
     40     compositor_->UpdateTopControlsState(constraints, current, animate);
     41     top_controls_constraints_ = constraints;
     42   }
     43 }
     44 
     45 void RenderViewImpl::UpdateTopControlsState(TopControlsState constraints,
     46                                             TopControlsState current,
     47                                             bool animate) {
     48   cc::TopControlsState constraints_cc =
     49       ContentToCcTopControlsState(constraints);
     50   cc::TopControlsState current_cc = ContentToCcTopControlsState(current);
     51   if (compositor_)
     52     compositor_->UpdateTopControlsState(constraints_cc, current_cc, animate);
     53   top_controls_constraints_ = constraints_cc;
     54 }
     55 
     56 void RenderViewImpl::didScrollWithKeyboard(const blink::WebSize& delta) {
     57   if (delta.height == 0)
     58     return;
     59   if (compositor_) {
     60     cc::TopControlsState current = delta.height < 0 ? cc::SHOWN : cc::HIDDEN;
     61     compositor_->UpdateTopControlsState(top_controls_constraints_,
     62                                         current,
     63                                         true);
     64   }
     65 }
     66 
     67 void RenderViewImpl::OnExtractSmartClipData(const gfx::Rect& rect) {
     68   Send(new ViewHostMsg_SmartClipDataExtracted(
     69       routing_id_, webview()->getSmartClipData(rect)));
     70 }
     71 
     72 }  // namespace content
     73