mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Samuel Susla
08dda02347
Summary: Changelog: [Internal] Use LayoutContext to pass `fontSizeMultiplier` down to ParagrapShadowNode. Reviewed By: shergin Differential Revision: D20184596 fbshipit-source-id: 3965a127069a21328ed19cb3f9732f0a2d1c4d58
80 lines
2.4 KiB
C++
80 lines
2.4 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 "ParagraphShadowNode.h"
|
|
|
|
#include <react/attributedstring/AttributedStringBox.h>
|
|
#include "ParagraphState.h"
|
|
|
|
namespace facebook {
|
|
namespace react {
|
|
|
|
char const ParagraphComponentName[] = "Paragraph";
|
|
|
|
AttributedString ParagraphShadowNode::getAttributedString(Float fontSizeMultiplier) const {
|
|
if (!cachedAttributedString_.has_value()) {
|
|
auto textAttributes = TextAttributes::defaultTextAttributes();
|
|
textAttributes.fontSizeMultiplier = fontSizeMultiplier;
|
|
textAttributes.apply(getConcreteProps().textAttributes);
|
|
|
|
cachedAttributedString_ =
|
|
BaseTextShadowNode::getAttributedString(textAttributes, *this);
|
|
}
|
|
|
|
return cachedAttributedString_.value();
|
|
}
|
|
|
|
void ParagraphShadowNode::setTextLayoutManager(
|
|
SharedTextLayoutManager textLayoutManager) {
|
|
ensureUnsealed();
|
|
textLayoutManager_ = textLayoutManager;
|
|
}
|
|
|
|
void ParagraphShadowNode::updateStateIfNeeded(LayoutContext layoutContext) {
|
|
ensureUnsealed();
|
|
|
|
auto attributedString = getAttributedString(layoutContext.fontSizeMultiplier);
|
|
auto const &state = getStateData();
|
|
|
|
assert(textLayoutManager_);
|
|
assert(
|
|
(!state.layoutManager || state.layoutManager == textLayoutManager_) &&
|
|
"`StateData` refers to a different `TextLayoutManager`");
|
|
|
|
if (state.attributedString == attributedString &&
|
|
state.layoutManager == textLayoutManager_) {
|
|
return;
|
|
}
|
|
|
|
setStateData(ParagraphState{attributedString,
|
|
getConcreteProps().paragraphAttributes,
|
|
textLayoutManager_});
|
|
}
|
|
|
|
#pragma mark - LayoutableShadowNode
|
|
|
|
Size ParagraphShadowNode::measureContent(LayoutConstraints layoutConstraints, LayoutContext layoutContext) const {
|
|
AttributedString attributedString = getAttributedString(layoutContext.fontSizeMultiplier);
|
|
|
|
if (attributedString.isEmpty()) {
|
|
return layoutConstraints.clamp({0, 0});
|
|
}
|
|
|
|
return textLayoutManager_->measure(
|
|
AttributedStringBox{attributedString},
|
|
getConcreteProps().paragraphAttributes,
|
|
layoutConstraints);
|
|
}
|
|
|
|
void ParagraphShadowNode::layout(LayoutContext layoutContext) {
|
|
updateStateIfNeeded(layoutContext);
|
|
ConcreteViewShadowNode::layout(layoutContext);
|
|
}
|
|
|
|
} // namespace react
|
|
} // namespace facebook
|