110 lines
3.4 KiB
C++
110 lines
3.4 KiB
C++
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/*
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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#include "LayoutAnimationDriver.h"
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#include <glog/logging.h>
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#include <react/debug/react_native_assert.h>
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#include <react/renderer/animations/utils.h>
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#include <algorithm>
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namespace facebook::react {
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void LayoutAnimationDriver::animationMutationsForFrame(
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SurfaceId surfaceId,
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ShadowViewMutation::List &mutationsList,
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uint64_t now) const {
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for (auto &animation : inflightAnimations_) {
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if (animation.surfaceId != surfaceId) {
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continue;
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}
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if (animation.completed) {
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continue;
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}
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int incompleteAnimations = 0;
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for (auto &keyframe : animation.keyFrames) {
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if (keyframe.invalidated) {
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continue;
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}
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auto const &baselineShadowView = keyframe.viewStart;
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auto const &finalShadowView = keyframe.viewEnd;
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// The contract with the "keyframes generation" phase is that any animated
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// node will have a valid configuration.
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auto const layoutAnimationConfig = animation.layoutAnimationConfig;
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auto const &mutationConfig =
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(keyframe.type == AnimationConfigurationType::Delete
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? layoutAnimationConfig.deleteConfig
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: (keyframe.type == AnimationConfigurationType::Create
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? layoutAnimationConfig.createConfig
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: layoutAnimationConfig.updateConfig));
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// Interpolate
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auto progress =
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calculateAnimationProgress(now, animation, mutationConfig);
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auto animationTimeProgressLinear = progress.first;
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auto animationInterpolationFactor = progress.second;
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auto mutatedShadowView = createInterpolatedShadowView(
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animationInterpolationFactor, baselineShadowView, finalShadowView);
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// Create the mutation instruction
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mutationsList.emplace_back(ShadowViewMutation::UpdateMutation(
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keyframe.viewPrev, mutatedShadowView, keyframe.parentView));
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PrintMutationInstruction("Animation Progress:", mutationsList.back());
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keyframe.viewPrev = std::move(mutatedShadowView);
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if (animationTimeProgressLinear < 1) {
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incompleteAnimations++;
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}
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}
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// Are there no ongoing mutations left in this animation?
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if (incompleteAnimations == 0) {
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animation.completed = true;
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}
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}
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// Clear out finished animations
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for (auto it = inflightAnimations_.begin();
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it != inflightAnimations_.end();) {
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const auto &animation = *it;
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if (animation.completed) {
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callCallback(animation.successCallback);
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// Queue up "final" mutations for all keyframes in the completed animation
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for (auto const &keyframe : animation.keyFrames) {
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if (keyframe.invalidated) {
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continue;
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}
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queueFinalMutationsForCompletedKeyFrame(
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keyframe,
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mutationsList,
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false,
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"LayoutAnimationDriver: Animation Completed");
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}
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it = inflightAnimations_.erase(it);
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} else {
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it++;
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}
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}
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// Final step: make sure that all operations execute in the proper order.
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// REMOVE operations with highest indices must operate first.
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std::stable_sort(
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mutationsList.begin(),
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mutationsList.end(),
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&shouldFirstComeBeforeSecondMutation);
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}
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} // namespace facebook::react
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