compositor-worker: plumb element id and mutable properties

cc/layers/layer_impl.cc

 // Copyright 2012 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/layers/layer_impl.h"
 
 #include "base/json/json_reader.h"
 #include "base/numerics/safe_conversions.h"
 #include "base/strings/stringprintf.h"
 #include "base/trace_event/trace_event.h"
 #include "base/trace_event/trace_event_argument.h"
 #include "cc/animation/animation_registrar.h"
+#include "cc/animation/mutable_properties.h"
 #include "cc/base/math_util.h"
 #include "cc/base/simple_enclosed_region.h"
 #include "cc/debug/debug_colors.h"
 #include "cc/debug/layer_tree_debug_state.h"
 #include "cc/debug/micro_benchmark_impl.h"
 #include "cc/debug/traced_value.h"
 #include "cc/input/scroll_state.h"
 #include "cc/layers/layer.h"
 #include "cc/layers/layer_utils.h"
 #include "cc/output/copy_output_request.h"
@@ skipping 55 matching lines @@
       draw_blend_mode_(SkXfermode::kSrcOver_Mode),
       num_descendants_that_draw_content_(0),
       transform_tree_index_(-1),
       effect_tree_index_(-1),
       clip_tree_index_(-1),
       draw_depth_(0.f),
       needs_push_properties_(false),
       num_dependents_need_push_properties_(0),
       sorting_context_id_(0),
       current_draw_mode_(DRAW_MODE_NONE),
+      element_id_(0),
+      mutable_properties_(kMutablePropertyNone),
       num_layer_or_descendants_with_copy_request_(0),
       frame_timing_requests_dirty_(false),
       visited_(false),
       layer_or_descendant_is_drawn_(false),
       layer_or_descendant_has_input_handler_(false),
       sorted_for_recursion_(false) {
   DCHECK_GT(layer_id_, 0);
   DCHECK(layer_tree_impl_);
   layer_tree_impl_->RegisterLayer(this);
 
@@ skipping 491 matching lines @@
       is_container_for_fixed_position_layers_);
   layer->SetPositionConstraint(position_constraint_);
   layer->SetShouldFlattenTransform(should_flatten_transform_);
   layer->set_should_flatten_transform_from_property_tree(
       should_flatten_transform_from_property_tree_);
   layer->set_draw_blend_mode(draw_blend_mode_);
   layer->SetUseParentBackfaceVisibility(use_parent_backface_visibility_);
   layer->SetTransformAndInvertibility(transform_, transform_is_invertible_);
 
   layer->SetScrollClipLayer(scroll_clip_layer_id_);
+  layer->SetElementId(element_id_);
+  layer->SetMutableProperties(mutable_properties_);
   layer->set_user_scrollable_horizontal(user_scrollable_horizontal_);
   layer->set_user_scrollable_vertical(user_scrollable_vertical_);
 
   layer->SetScrollCompensationAdjustment(scroll_compensation_adjustment_);
 
   layer->PushScrollOffset(nullptr);
 
   layer->Set3dSortingContextId(sorting_context_id_);
   layer->SetNumDescendantsThatDrawContent(num_descendants_that_draw_content_);
 
@@ skipping 600 matching lines @@
 
 bool LayerImpl::OpacityIsAnimatingOnImplOnly() const {
   if (!layer_animation_controller_)
     return layer_tree_impl_->OpacityIsAnimatingOnImplOnly(this);
 
   Animation* opacity_animation =
       layer_animation_controller_->GetAnimation(Animation::OPACITY);
   return opacity_animation && opacity_animation->is_impl_only();
 }
 
+void LayerImpl::SetElementId(uint64_t element_id) {
+  if (element_id == element_id_)
+    return;
+
+  TRACE_EVENT1(TRACE_DISABLED_BY_DEFAULT("compositor-worker"),
+               "LayerImpl::SetElementId", "id", element_id);
+
+  element_id_ = element_id;
+  SetNeedsPushProperties();
+}
+
+void LayerImpl::SetMutableProperties(uint32_t properties) {
+  if (mutable_properties_ == properties)
+    return;
+
+  TRACE_EVENT1(TRACE_DISABLED_BY_DEFAULT("compositor-worker"),
+               "LayerImpl::SetMutableProperties", "properties", properties);
+
+  mutable_properties_ = properties;
+  SetNeedsPushProperties();
+}
+
 void LayerImpl::SetBlendMode(SkXfermode::Mode blend_mode) {
   if (blend_mode_ == blend_mode)
     return;
 
   blend_mode_ = blend_mode;
   NoteLayerPropertyChangedForSubtree();
 }
 
 void LayerImpl::SetIsRootForIsolatedGroup(bool root) {
   if (is_root_for_isolated_group_ == root)
@@ skipping 394 matching lines @@
   MathUtil::AddToTracedValue("bounds", bounds_, state);
 
   state->SetDouble("opacity", opacity());
 
   MathUtil::AddToTracedValue("position", position_, state);
 
   state->SetInteger("draws_content", DrawsContent());
   state->SetInteger("gpu_memory_usage",
                     base::saturated_cast<int>(GPUMemoryUsageInBytes()));
 
+  if (mutable_properties_ != kMutablePropertyNone) {
+    state->SetInteger("element_id", base::saturated_cast<int>(element_id_));
+    state->SetInteger("mutable_properties", mutable_properties_);
+  }
+
   MathUtil::AddToTracedValue(
       "scroll_offset", scroll_offset_ ? scroll_offset_->Current(IsActive())
                                       : gfx::ScrollOffset(),
       state);
 
   MathUtil::AddToTracedValue("transform_origin", transform_origin_, state);
 
   bool clipped;
   gfx::QuadF layer_quad =
       MathUtil::MapQuad(ScreenSpaceTransform(),
@@ skipping 190 matching lines @@
            .layer_transforms_should_scale_layer_contents) {
     return default_scale;
   }
 
   gfx::Vector2dF transform_scales = MathUtil::ComputeTransform2dScaleComponents(
       DrawTransform(), default_scale);
   return std::max(transform_scales.x(), transform_scales.y());
 }
 
 }  // namespace cc