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https://github.com/status-im/react-native.git
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37d19aaae3
Summary: * Now all `RCTViewComponentView` subclasses are required to set `_props` instance variable in the constructor with a default value; * `RCTViewComponentView`'s `_props` instance variable now has `ShadredViewProps` type (that enforced by `static_assert` in `ConcreteViewShadowNode` template); * New we use `static_pointer_cast` instead of `dynamic_pointer_cast` for casting props. Reviewed By: mdvacca Differential Revision: D9734199 fbshipit-source-id: b0a0939c936f8b5b540fa5fa1e4a2f1037346fc5
117 lines
3.7 KiB
Plaintext
117 lines
3.7 KiB
Plaintext
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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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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#import "RCTParagraphComponentView.h"
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#import <fabric/components/text/ParagraphLocalData.h>
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#import <fabric/components/text/ParagraphProps.h>
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#import <fabric/core/LocalData.h>
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#import <fabric/graphics/Geometry.h>
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#import <fabric/textlayoutmanager/TextLayoutManager.h>
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#import <fabric/textlayoutmanager/RCTTextLayoutManager.h>
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#import "RCTConversions.h"
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using namespace facebook::react;
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@implementation RCTParagraphComponentView {
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SharedParagraphLocalData _paragraphLocalData;
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ParagraphAttributes _paragraphAttributes;
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}
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- (instancetype)initWithFrame:(CGRect)frame
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{
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if (self = [super initWithFrame:frame]) {
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static const auto defaultProps = std::make_shared<const ParagraphProps>();
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_props = defaultProps;
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self.isAccessibilityElement = YES;
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self.accessibilityTraits |= UIAccessibilityTraitStaticText;
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self.opaque = NO;
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self.contentMode = UIViewContentModeRedraw;
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}
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return self;
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}
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- (void)updateProps:(SharedProps)props oldProps:(SharedProps)oldProps
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{
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const auto ¶graphProps = std::static_pointer_cast<const ParagraphProps>(props);
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[super updateProps:props oldProps:oldProps];
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assert(paragraphProps);
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_paragraphAttributes = paragraphProps->paragraphAttributes;
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}
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- (void)updateLocalData:(SharedLocalData)localData
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oldLocalData:(SharedLocalData)oldLocalData
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{
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_paragraphLocalData = std::static_pointer_cast<const ParagraphLocalData>(localData);
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assert(_paragraphLocalData);
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[self setNeedsDisplay];
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}
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- (void)drawRect:(CGRect)rect
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{
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if (!_paragraphLocalData) {
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return;
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}
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SharedTextLayoutManager textLayoutManager =
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_paragraphLocalData->getTextLayoutManager();
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RCTTextLayoutManager *nativeTextLayoutManager =
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(__bridge RCTTextLayoutManager *)textLayoutManager->getNativeTextLayoutManager();
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CGRect frame = RCTCGRectFromRect(_layoutMetrics.getContentFrame());
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[nativeTextLayoutManager drawAttributedString:_paragraphLocalData->getAttributedString()
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paragraphAttributes:_paragraphAttributes
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frame:frame];
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}
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#pragma mark - Accessibility
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- (NSString *)accessibilityLabel
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{
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NSString *superAccessibilityLabel = [super accessibilityLabel];
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if (superAccessibilityLabel) {
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return superAccessibilityLabel;
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}
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if (!_paragraphLocalData) {
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return nil;
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}
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return RCTNSStringFromString(_paragraphLocalData->getAttributedString().getString());
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}
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- (SharedTouchEventEmitter)touchEventEmitterAtPoint:(CGPoint)point
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{
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if (!_paragraphLocalData) {
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return _eventEmitter;
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}
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SharedTextLayoutManager textLayoutManager = _paragraphLocalData->getTextLayoutManager();
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RCTTextLayoutManager *nativeTextLayoutManager = (__bridge RCTTextLayoutManager *)textLayoutManager->getNativeTextLayoutManager();
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CGRect frame = RCTCGRectFromRect(_layoutMetrics.getContentFrame());
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SharedShadowNode textShadowNode = [nativeTextLayoutManager getParentShadowNodeWithAttributeString:_paragraphLocalData->getAttributedString()
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paragraphAttributes:_paragraphAttributes
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frame:frame
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atPoint:point];
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if (!textShadowNode) {
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return _eventEmitter;
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}
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SharedEventEmitter eventEmitter = textShadowNode->getEventEmitter();
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assert(std::dynamic_pointer_cast<const TouchEventEmitter>(eventEmitter));
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return std::static_pointer_cast<const TouchEventEmitter>(eventEmitter);
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}
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@end
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