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2021-04-02 02:24:13 +03:00

101 lines
3.2 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.
*/
#include "SliderShadowNode.h"
#include <react/core/LayoutContext.h>
namespace facebook {
namespace react {
extern const char SliderComponentName[] = "Slider";
void SliderShadowNode::setImageManager(const SharedImageManager &imageManager) {
ensureUnsealed();
imageManager_ = imageManager;
}
void SliderShadowNode::setSliderMeasurementsManager(
const std::shared_ptr<SliderMeasurementsManager> &measurementsManager) {
ensureUnsealed();
measurementsManager_ = measurementsManager;
}
void SliderShadowNode::updateStateIfNeeded() {
const auto &newTrackImageSource = getTrackImageSource();
const auto &newMinimumTrackImageSource = getMinimumTrackImageSource();
const auto &newMaximumTrackImageSource = getMaximumTrackImageSource();
const auto &newThumbImageSource = getThumbImageSource();
auto const &currentState = getStateData();
auto trackImageSource = currentState.getTrackImageSource();
auto minimumTrackImageSource = currentState.getMinimumTrackImageSource();
auto maximumTrackImageSource = currentState.getMaximumTrackImageSource();
auto thumbImageSource = currentState.getThumbImageSource();
bool anyChanged = newTrackImageSource != trackImageSource ||
newMinimumTrackImageSource != minimumTrackImageSource ||
newMaximumTrackImageSource != maximumTrackImageSource ||
newThumbImageSource != thumbImageSource;
if (!anyChanged) {
return;
}
// Now we are about to mutate the Shadow Node.
ensureUnsealed();
// It is not possible to copy or move image requests from SliderLocalData,
// so instead we recreate any image requests (that may already be in-flight?)
// TODO: check if multiple requests are cached or if it's a net loss
auto state = SliderState{
newTrackImageSource,
imageManager_->requestImage(newTrackImageSource, getSurfaceId()),
newMinimumTrackImageSource,
imageManager_->requestImage(newMinimumTrackImageSource, getSurfaceId()),
newMaximumTrackImageSource,
imageManager_->requestImage(newMaximumTrackImageSource, getSurfaceId()),
newThumbImageSource,
imageManager_->requestImage(newThumbImageSource, getSurfaceId())};
setStateData(std::move(state));
}
ImageSource SliderShadowNode::getTrackImageSource() const {
return getConcreteProps().trackImage;
}
ImageSource SliderShadowNode::getMinimumTrackImageSource() const {
return getConcreteProps().minimumTrackImage;
}
ImageSource SliderShadowNode::getMaximumTrackImageSource() const {
return getConcreteProps().maximumTrackImage;
}
ImageSource SliderShadowNode::getThumbImageSource() const {
return getConcreteProps().thumbImage;
}
#pragma mark - LayoutableShadowNode
Size SliderShadowNode::measure(LayoutConstraints layoutConstraints) const {
if (SliderMeasurementsManager::shouldMeasureSlider()) {
return measurementsManager_->measure(getSurfaceId(), layoutConstraints);
}
return {};
}
void SliderShadowNode::layout(LayoutContext layoutContext) {
updateStateIfNeeded();
ConcreteViewShadowNode::layout(layoutContext);
}
} // namespace react
} // namespace facebook