content/browser/renderer_host/delegated_frame_evictor.cc

   1 // Copyright 2013 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/browser/renderer_host/delegated_frame_evictor.h"
   6
   7 #include "base/logging.h"
   8
   9 namespace content {
  10
  11 DelegatedFrameEvictor::DelegatedFrameEvictor(
  12     DelegatedFrameEvictorClient* client)
  13     : client_(client), has_frame_(false) {}
  14
  15 DelegatedFrameEvictor::~DelegatedFrameEvictor() { DiscardedFrame(); }
  16
  17 void DelegatedFrameEvictor::SwappedFrame(bool visible) {
  18   has_frame_ = true;
  19   RendererFrameManager::GetInstance()->AddFrame(this, visible);
  20 }
  21
  22 void DelegatedFrameEvictor::DiscardedFrame() {
  23   RendererFrameManager::GetInstance()->RemoveFrame(this);
  24   has_frame_ = false;
  25 }
  26
  27 void DelegatedFrameEvictor::SetVisible(bool visible) {
  28   if (has_frame_) {
  29     if (visible) {
  30       RendererFrameManager::GetInstance()->LockFrame(this);
  31     } else {
  32       RendererFrameManager::GetInstance()->UnlockFrame(this);
  33     }
  34   }
  35 }
  36
  37 void DelegatedFrameEvictor::LockFrame() {
  38   DCHECK(has_frame_);
  39   RendererFrameManager::GetInstance()->LockFrame(this);
  40 }
  41
  42 void DelegatedFrameEvictor::UnlockFrame() {
  43   DCHECK(has_frame_);
  44   RendererFrameManager::GetInstance()->UnlockFrame(this);
  45 }
  46
  47 void DelegatedFrameEvictor::EvictCurrentFrame() {
  48   client_->EvictDelegatedFrame();
  49 }
  50
  51 }  // namespace content