ui/compositor/paint_cache.cc

   1 // Copyright 2015 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 "ui/compositor/paint_cache.h"
   6
   7 #include "cc/playback/display_item_list.h"
   8 #include "ui/compositor/paint_context.h"
   9
  10 namespace ui {
  11
  12 PaintCache::PaintCache() : has_cache_(false) {
  13 }
  14
  15 PaintCache::~PaintCache() {
  16 }
  17
  18 bool PaintCache::UseCache(const PaintContext& context) {
  19   if (!has_cache_)
  20     return false;
  21   DCHECK(context.list_);
  22   auto* item = context.list_->CreateAndAppendItem<cc::DrawingDisplayItem>();
  23   display_item_.CloneTo(item);
  24   return true;
  25 }
  26
  27 void PaintCache::SetCache(const cc::DrawingDisplayItem* item) {
  28   item->CloneTo(&display_item_);
  29   has_cache_ = true;
  30 }
  31
  32 }  // namespace ui