| // Copyright 2019 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "cc/paint/element_id.h" |
| |
| #include <inttypes.h> |
| |
| #include <limits> |
| #include <ostream> |
| #include <string> |
| |
| #include "base/strings/stringprintf.h" |
| #include "base/trace_event/traced_value.h" |
| |
| namespace cc { |
| |
| ElementId LayerIdToElementIdForTesting(int layer_id) { |
| // This intentionally returns an ElementId that is different from layer_id |
| // and is unlikely to conflict with other ElementIds. This ensures testing of |
| // our code not to depend on that the UI compositor uses ElementId(layer_id) |
| // as the element id of a layer. |
| return ElementId(std::numeric_limits<int>::max() - layer_id); |
| } |
| |
| void ElementId::AddToTracedValue(base::trace_event::TracedValue* res) const { |
| res->BeginDictionary("element_id"); |
| res->SetInteger("id_", id_); |
| res->EndDictionary(); |
| } |
| |
| std::string ElementId::ToString() const { |
| return base::StringPrintf("(%" PRIu64 ")", id_); |
| } |
| |
| size_t ElementIdHash::operator()(ElementId key) const { |
| return std::hash<int>()(key.id_); |
| } |
| |
| std::ostream& operator<<(std::ostream& out, const ElementId& id) { |
| return out << id.ToString(); |
| } |
| |
| } // namespace cc |