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1 // Copyright 2016 The Chromium Authors. All rights reserved. | 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "platform/graphics/CompositorMutableStateProvider.h" | 5 #include "platform/graphics/CompositorMutableStateProvider.h" |
6 | 6 |
7 #include <memory> | 7 #include <memory> |
8 #include "cc/layers/layer_impl.h" | 8 #include "cc/layers/layer_impl.h" |
9 #include "cc/trees/layer_tree_impl.h" | 9 #include "cc/trees/layer_tree_impl.h" |
10 #include "platform/graphics/CompositorElementId.h" | |
11 #include "platform/graphics/CompositorMutableProperties.h" | 10 #include "platform/graphics/CompositorMutableProperties.h" |
12 #include "platform/graphics/CompositorMutableState.h" | 11 #include "platform/graphics/CompositorMutableState.h" |
13 #include "platform/graphics/CompositorMutation.h" | 12 #include "platform/graphics/CompositorMutation.h" |
14 #include "platform/wtf/PtrUtil.h" | 13 #include "platform/wtf/PtrUtil.h" |
15 | 14 |
16 namespace blink { | 15 namespace blink { |
17 | 16 |
18 CompositorMutableStateProvider::CompositorMutableStateProvider( | 17 CompositorMutableStateProvider::CompositorMutableStateProvider( |
19 cc::LayerTreeImpl* tree_impl, | 18 cc::LayerTreeImpl* tree_impl, |
20 CompositorMutations* mutations) | 19 CompositorMutations* mutations) |
21 : tree_(tree_impl), mutations_(mutations) {} | 20 : tree_(tree_impl), mutations_(mutations) {} |
22 | 21 |
23 CompositorMutableStateProvider::~CompositorMutableStateProvider() {} | 22 CompositorMutableStateProvider::~CompositorMutableStateProvider() {} |
24 | 23 |
25 std::unique_ptr<CompositorMutableState> | 24 std::unique_ptr<CompositorMutableState> |
26 CompositorMutableStateProvider::GetMutableStateFor(uint64_t element_id) { | 25 CompositorMutableStateProvider::GetMutableStateFor(DOMNodeId dom_node_id) { |
27 cc::LayerImpl* main_layer = | 26 cc::LayerImpl* main_layer = |
28 tree_->LayerByElementId(CompositorElementIdFromDOMNodeId( | 27 tree_->LayerByElementId(CompositorElementIdFromDOMNodeId( |
29 element_id, CompositorElementIdNamespace::kPrimary)); | 28 dom_node_id, CompositorElementIdNamespace::kPrimary)); |
30 cc::LayerImpl* scroll_layer = | 29 cc::LayerImpl* scroll_layer = |
31 tree_->LayerByElementId(CompositorElementIdFromDOMNodeId( | 30 tree_->LayerByElementId(CompositorElementIdFromDOMNodeId( |
32 element_id, CompositorElementIdNamespace::kScroll)); | 31 dom_node_id, CompositorElementIdNamespace::kScroll)); |
33 | 32 |
34 if (!main_layer && !scroll_layer) | 33 if (!main_layer && !scroll_layer) |
35 return nullptr; | 34 return nullptr; |
36 | 35 |
37 // Ensure that we have an entry in the map for |elementId| but do as few | 36 // Ensure that we have an entry in the map for |elementId| but do as few |
38 // allocations and queries as possible. This will update the map only if we | 37 // allocations and queries as possible. This will update the map only if we |
39 // have not added a value for |elementId|. | 38 // have not added a value for |elementId|. |
40 auto result = mutations_->map.insert(element_id, nullptr); | 39 auto result = mutations_->map.insert(dom_node_id, nullptr); |
41 | 40 |
42 // Only if this is a new entry do we want to allocate a new mutation. | 41 // Only if this is a new entry do we want to allocate a new mutation. |
43 if (result.is_new_entry) | 42 if (result.is_new_entry) |
44 result.stored_value->value = WTF::WrapUnique(new CompositorMutation); | 43 result.stored_value->value = WTF::WrapUnique(new CompositorMutation); |
45 | 44 |
46 return WTF::WrapUnique(new CompositorMutableState( | 45 return WTF::WrapUnique(new CompositorMutableState( |
47 result.stored_value->value.get(), main_layer, scroll_layer)); | 46 result.stored_value->value.get(), main_layer, scroll_layer)); |
48 } | 47 } |
49 | 48 |
50 } // namespace blink | 49 } // namespace blink |
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