react-native/Libraries/Image/RCTStaticImage.m

63 lines
1.5 KiB
Objective-C

/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*/
#import "RCTStaticImage.h"
@implementation RCTStaticImage
- (void)_updateImage
{
UIImage *image = self.image;
if (!image) {
return;
}
// Apply rendering mode
if (_renderingMode != image.renderingMode) {
image = [image imageWithRenderingMode:_renderingMode];
}
// Applying capInsets of 0 will switch the "resizingMode" of the image to "tile" which is undesired
if (!UIEdgeInsetsEqualToEdgeInsets(UIEdgeInsetsZero, _capInsets)) {
image = [image resizableImageWithCapInsets:_capInsets resizingMode:UIImageResizingModeStretch];
}
// Apply trilinear filtering to smooth out mis-sized images
self.layer.minificationFilter = kCAFilterTrilinear;
self.layer.magnificationFilter = kCAFilterTrilinear;
super.image = image;
}
- (void)setImage:(UIImage *)image
{
if (image != super.image) {
super.image = image;
[self _updateImage];
}
}
- (void)setCapInsets:(UIEdgeInsets)capInsets
{
if (!UIEdgeInsetsEqualToEdgeInsets(_capInsets, capInsets)) {
_capInsets = capInsets;
[self _updateImage];
}
}
- (void)setRenderingMode:(UIImageRenderingMode)renderingMode
{
if (_renderingMode != renderingMode) {
_renderingMode = renderingMode;
[self _updateImage];
}
}
@end