cc: Move more functionality from host to LayerTreeImpl

cc/layer_tree_host_impl.cc

 // Copyright 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/layer_tree_host_impl.h"
 
 #include <algorithm>
 
 #include "base/basictypes.h"
 #include "base/debug/trace_event.h"
@@ skipping 201 matching lines @@
     , m_scrollDeltaIsInViewportSpace(false)
     , m_settings(settings)
     , m_debugState(settings.initialDebugState)
     , m_deviceScaleFactor(1)
     , m_visible(true)
     , m_contentsTexturesPurged(false)
     , m_managedMemoryPolicy(PrioritizedResourceManager::defaultMemoryAllocationLimit(),
                             ManagedMemoryPolicy::CUTOFF_ALLOW_EVERYTHING,
                             0,
                             ManagedMemoryPolicy::CUTOFF_ALLOW_NOTHING)
-    , m_backgroundColor(0)
-    , m_hasTransparentBackground(false)
     , m_needsUpdateDrawProperties(false)
     , m_pinchGestureActive(false)
     , m_fpsCounter(FrameRateCounter::create(m_proxy->hasImplThread()))
     , m_debugRectHistory(DebugRectHistory::create())
     , m_numImplThreadScrolls(0)
     , m_numMainThreadScrolls(0)
     , m_cumulativeNumLayersDrawn(0)
     , m_cumulativeNumMissingTiles(0)
     , m_lastSentMemoryVisibleBytes(0)
     , m_lastSentMemoryVisibleAndNearbyBytes(0)
@@ skipping 373 matching lines @@
 
 #ifndef NDEBUG
     for (size_t i = 0; i < frame.renderPasses.size(); ++i) {
         for (size_t j = 0; j < frame.renderPasses[i]->quad_list.size(); ++j)
             DCHECK(frame.renderPasses[i]->quad_list[j]->shared_quad_state);
         DCHECK(frame.renderPassesById.find(frame.renderPasses[i]->id)
                != frame.renderPassesById.end());
     }
 #endif
 
-    if (!m_hasTransparentBackground) {
+    if (!activeTree()->has_transparent_background()) {
         frame.renderPasses.last()->has_transparent_background = false;
-        appendQuadsToFillScreen(frame.renderPasses.last(), rootLayer(), m_backgroundColor, occlusionTracker);
+        appendQuadsToFillScreen(frame.renderPasses.last(), rootLayer(), activeTree()->background_color(), occlusionTracker);
     }
 
     if (drawFrame)
         occlusionTracker.overdrawMetrics().recordMetrics(this);
 
     removeRenderPasses(CullRenderPassesWithNoQuads(), frame);
     m_renderer->decideRenderPassAllocationsForFrame(frame.renderPasses);
     removeRenderPasses(CullRenderPassesWithCachedTextures(*m_renderer), frame);
 
     return drawFrame;
@@ skipping 363 matching lines @@
 
     if (layerImpl->scrollable())
         return layerImpl;
 
     if (layerImpl->drawsContent() && layerImpl->parent() && layerImpl->parent()->scrollable())
         return layerImpl->parent();
 
     return 0;
 }
 
-void LayerTreeHostImpl::setRootLayer(scoped_ptr<LayerImpl> layer)
-{
-    m_activeTree->SetRootLayer(layer.Pass());
-    setNeedsUpdateDrawProperties();
-}
-
 void LayerTreeHostImpl::createPendingTree()
 {
     CHECK(!m_pendingTree);
     m_pendingTree = LayerTreeImpl::create(this);
     m_client->onCanDrawStateChanged(canDraw());
     m_client->onHasPendingTreeStateChanged(pendingTree());
 }
 
 void LayerTreeHostImpl::activatePendingTreeIfNeeded()
 {
@@ skipping 20 matching lines @@
 void LayerTreeHostImpl::activatePendingTree()
 {
     CHECK(m_pendingTree);
     m_activeTree.swap(m_pendingTree);
     // TODO(enne): consider recycling this tree to prevent layer churn
     m_pendingTree.reset();
     m_client->onCanDrawStateChanged(canDraw());
     m_client->onHasPendingTreeStateChanged(pendingTree());
 }
 
-scoped_ptr<LayerImpl> LayerTreeHostImpl::detachLayerTree()
-{
-    scoped_ptr<LayerImpl> layer = m_activeTree->DetachLayerTree();
-    return layer.Pass();
-}
-
 void LayerTreeHostImpl::setVisible(bool visible)
 {
     DCHECK(m_proxy->isImplThread());
 
     if (m_visible == visible)
         return;
     m_visible = visible;
     didVisibilityChange(this, m_visible);
     enforceManagedMemoryPolicy(m_managedMemoryPolicy);
 
@@ skipping 653 matching lines @@
     ScrollbarAnimationController* scrollbarController = layer->scrollbarAnimationController();
     double monotonicTime = (time - base::TimeTicks()).InSecondsF();
     if (scrollbarController && scrollbarController->animate(monotonicTime))
         m_client->setNeedsRedrawOnImplThread();
 
     for (size_t i = 0; i < layer->children().size(); ++i)
         animateScrollbarsRecursive(layer->children()[i], time);
 }
 
 }  // namespace cc