mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
David Vacca
58a7ddd55d
Summary: Here I'm implementing equality methods for ARTGroup, ARTShape and ARTText and I'm using these methods to update the state only when it is necessary. This will improve perf in rendering of ART changelog: [Internal] Reviewed By: JoshuaGross Differential Revision: D21695127 fbshipit-source-id: b438ddea4c34bd7a0bdf26a6aac4fd62a9f78b49
82 lines
2.1 KiB
C++
82 lines
2.1 KiB
C++
/*
|
|
* Copyright (c) Facebook, Inc. and its affiliates.
|
|
*
|
|
* This source code is licensed under the MIT license found in the
|
|
* LICENSE file in the root directory of this source tree.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <folly/Hash.h>
|
|
#include <folly/Optional.h>
|
|
#include <react/components/art/primitives.h>
|
|
#include <react/core/Sealable.h>
|
|
#include <react/core/ShadowNode.h>
|
|
#include <react/debug/DebugStringConvertible.h>
|
|
#include <react/graphics/Geometry.h>
|
|
#include <react/mounting/ShadowView.h>
|
|
#include <functional>
|
|
#include <memory>
|
|
|
|
namespace facebook {
|
|
namespace react {
|
|
|
|
/*
|
|
* Simple, cross-platfrom, React-specific implementation of base ART Element
|
|
*/
|
|
class ARTElement {
|
|
public:
|
|
using Shared = std::shared_ptr<const ARTElement>;
|
|
using ListOfShared = better::small_vector<ARTElement::Shared, 0>;
|
|
|
|
ARTElement() = default;
|
|
ARTElement(
|
|
ARTElementType elementType,
|
|
Float opacity,
|
|
std::vector<Float> transform)
|
|
: elementType(elementType), opacity(opacity), transform(transform){};
|
|
virtual ~ARTElement(){};
|
|
|
|
ARTElementType elementType;
|
|
Float opacity;
|
|
std::vector<Float> transform;
|
|
|
|
virtual bool operator==(const ARTElement &rhs) const = 0;
|
|
virtual bool operator!=(const ARTElement &rhs) const = 0;
|
|
friend bool operator==(ListOfShared e1, ListOfShared e2) {
|
|
bool equals = e1.size() == e2.size();
|
|
for (int i = 0; i < equals && e1.size(); i++) {
|
|
// Pointer equality - this will work if both are pointing at the same
|
|
// object, or both are nullptr
|
|
if (e1[i] == e2[i]) {
|
|
continue;
|
|
}
|
|
|
|
// Get pointers from both
|
|
// If one is null, we know they can't both be null because of the above
|
|
// check
|
|
auto ptr1 = e1[i].get();
|
|
auto ptr2 = e2[i].get();
|
|
if (ptr1 == nullptr || ptr2 == nullptr) {
|
|
equals = false;
|
|
break;
|
|
}
|
|
|
|
// Dereference and compare objects
|
|
if (*ptr1 != *ptr2) {
|
|
equals = false;
|
|
break;
|
|
}
|
|
}
|
|
|
|
return equals;
|
|
};
|
|
|
|
#ifdef ANDROID
|
|
virtual folly::dynamic getDynamic() const = 0;
|
|
#endif
|
|
};
|
|
|
|
} // namespace react
|
|
} // namespace facebook
|