mirror of
https://github.com/zoriya/react-native-svg.git
synced 2025-12-21 22:35:13 +00:00
142 lines
3.0 KiB
Objective-C
142 lines
3.0 KiB
Objective-C
/**
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* Copyright (c) 2015-present, Horcrux.
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* All rights reserved.
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*
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* This source code is licensed under the MIT-style 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 "RNSVGImage.h"
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#import "RCTConvert+RNSVG.h"
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#import <React/RCTImageSource.h>
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#import <React/RCTLog.h>
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#import "RNSVGViewBox.h"
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@implementation RNSVGImage
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{
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CGImageRef _image;
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CGSize _imageSize;
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}
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- (void)setSrc:(id)src
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{
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if (src == _src) {
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return;
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}
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_src = src;
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CGImageRelease(_image);
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_image = CGImageRetain([RCTConvert CGImage:src]);
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RCTImageSource *source = [RCTConvert RCTImageSource:src];
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if (source.size.width != 0 && source.size.height != 0) {
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_imageSize = source.size;
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} else {
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_imageSize = CGSizeMake(CGImageGetWidth(_image), CGImageGetHeight(_image));
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}
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[self invalidate];
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}
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- (void)setX:(NSString *)x
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{
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if (x == _x) {
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return;
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}
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[self invalidate];
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_x = x;
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}
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- (void)setY:(NSString *)y
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{
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if (y == _y) {
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return;
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}
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[self invalidate];
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_y = y;
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}
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- (void)setWidth:(NSString *)width
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{
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if (width == _width) {
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return;
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}
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[self invalidate];
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_width = width;
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}
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- (void)setHeight:(NSString *)height
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{
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if (height == _height) {
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return;
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}
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[self invalidate];
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_height = height;
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}
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- (void)setAlign:(NSString *)align
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{
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if (align == _align) {
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return;
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}
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[self invalidate];
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_align = align;
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}
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- (void)setMeetOrSlice:(RNSVGVBMOS)meetOrSlice
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{
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if (meetOrSlice == _meetOrSlice) {
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return;
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}
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[self invalidate];
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_meetOrSlice = meetOrSlice;
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}
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- (void)dealloc
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{
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CGImageRelease(_image);
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}
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- (void)renderLayerTo:(CGContextRef)context
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{
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CGContextSaveGState(context);
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// add hit area
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CGRect hitArea = [self getHitArea];
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CGPathRef hitAreaPath = CGPathCreateWithRect(hitArea, nil);
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[self setHitArea:hitAreaPath];
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CGPathRelease(hitAreaPath);
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// apply viewBox transform on Image render.
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CGRect imageBounds = CGRectMake(0, 0, _imageSize.width, _imageSize.height);
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CGAffineTransform viewbox = [RNSVGViewBox getTransform:imageBounds eRect:hitArea align:self.align meetOrSlice:self.meetOrSlice];
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CGContextTranslateCTM(context, 0, hitArea.size.height);
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CGContextScaleCTM(context, 1, -1);
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[self clip:context];
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CGContextClipToRect(context, hitArea);
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CGContextConcatCTM(context, viewbox);
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CGContextDrawImage(context, imageBounds, _image);
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CGContextRestoreGState(context);
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}
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- (CGRect)getHitArea
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{
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CGFloat x = [self relativeOnWidth:self.x];
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CGFloat y = [self relativeOnHeight:self.y];
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CGFloat width = [self relativeOnWidth:self.width];
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CGFloat height = [self relativeOnHeight:self.height];
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if (width == 0) {
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width = _imageSize.width;
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}
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if (height == 0) {
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height = _imageSize.height;
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}
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return CGRectMake(x, y, width, height);
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}
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- (CGPathRef)getPath:(CGContextRef)context
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{
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return (CGPathRef)CFAutorelease(CGPathCreateWithRect([self getHitArea], nil));
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}
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@end
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