react-native/React/Fabric/Mounting/RCTParagraphComponentView.mm
Valentin Shergin dd3a6eda70 Fabric: Devirtualizing of props parsing infra
Summary:
This diff contains several tight to each other changes (which can/should not be split into several diffs):
 * The props parsing/conversion process was de-virtualized: we don't use virtual `apply` method to parse props anymore. Instead, we use old-fashioned constructors.
 * All fields of Props classes which represent props values were marked as `const` which make impossible to modify them after the objects were created (even if we have non-const value-of/pointer-to the whole Props object). Those fields are also `public` now.
 * All custom handwritten getters were removed (because we don't need them anymore).

So, now we don't need all those custom getters which makes code much more compact, performant and codegen-friendly.

Reviewed By: fkgozali

Differential Revision: D7901245

fbshipit-source-id: 9f4b1fd2da64bf963b63215ed3bd74b9d3c58dd5
2018-05-14 16:03:49 -07:00

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/**
* Copyright (c) 2015-present, Facebook, Inc.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
#import "RCTParagraphComponentView.h"
#import <fabric/core/LocalData.h>
#import <fabric/graphics/Geometry.h>
#import <fabric/text/ParagraphLocalData.h>
#import <fabric/text/ParagraphProps.h>
#import <fabric/textlayoutmanager/TextLayoutManager.h>
#import <fabric/textlayoutmanager/RCTTextLayoutManager.h>
#import "RCTConversions.h"
using namespace facebook::react;
@implementation RCTParagraphComponentView {
SharedParagraphLocalData _paragraphLocalData;
ParagraphAttributes _paragraphAttributes;
}
- (instancetype)initWithFrame:(CGRect)frame
{
if (self = [super initWithFrame:frame]) {
self.isAccessibilityElement = YES;
self.accessibilityTraits |= UIAccessibilityTraitStaticText;
self.opaque = NO;
self.contentMode = UIViewContentModeRedraw;
}
return self;
}
- (void)updateProps:(SharedProps)props oldProps:(SharedProps)oldProps
{
[super updateProps:props oldProps:oldProps];
auto paragraphProps = std::static_pointer_cast<const ParagraphProps>(props);
assert(paragraphProps);
_paragraphAttributes = paragraphProps->paragraphAttributes;
}
- (void)updateLocalData:(SharedLocalData)localData
oldLocalData:(SharedLocalData)oldLocalData
{
_paragraphLocalData = std::static_pointer_cast<const ParagraphLocalData>(localData);
assert(_paragraphLocalData);
[self setNeedsDisplay];
}
- (void)drawRect:(CGRect)rect
{
if (!_paragraphLocalData) {
return;
}
SharedTextLayoutManager textLayoutManager =
_paragraphLocalData->getTextLayoutManager();
RCTTextLayoutManager *nativeTextLayoutManager =
(__bridge RCTTextLayoutManager *)textLayoutManager->getNativeTextLayoutManager();
CGRect frame = RCTCGRectFromRect(_layoutMetrics.getContentFrame());
[nativeTextLayoutManager drawAttributedString:_paragraphLocalData->getAttributedString()
paragraphAttributes:_paragraphAttributes
frame:frame];
}
@end