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6687c84467
Summary: Images whose intrinsic dimensions don't match the view's dimensions suffer from jaggies. Applying `kCAFilterTrilinear` makes this way better. If you accurately size your images then there's no difference, good job (y) I left GIFs using the default linear filtering since they are more intensive to begin with and GIFs are generally for animation these days anyway. Closes https://github.com/facebook/react-native/pull/95 Github Author: James Ide <ide@jameside.com> Test Plan: Imported from GitHub, without a `Test Plan:` line.
56 lines
1.3 KiB
Objective-C
56 lines
1.3 KiB
Objective-C
// Copyright 2004-present Facebook. All Rights Reserved.
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#import "RCTStaticImage.h"
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@implementation RCTStaticImage
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- (void)_updateImage
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{
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UIImage *image = self.image;
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if (!image) {
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return;
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}
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// Apply rendering mode
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if (_renderingMode != image.renderingMode) {
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image = [image imageWithRenderingMode:_renderingMode];
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}
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// Applying capInsets of 0 will switch the "resizingMode" of the image to "tile" which is undesired
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if (!UIEdgeInsetsEqualToEdgeInsets(UIEdgeInsetsZero, _capInsets)) {
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image = [image resizableImageWithCapInsets:_capInsets resizingMode:UIImageResizingModeStretch];
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}
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// Apply trilinear filtering to smooth out mis-sized images
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self.layer.minificationFilter = kCAFilterTrilinear;
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self.layer.magnificationFilter = kCAFilterTrilinear;
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super.image = image;
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}
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- (void)setImage:(UIImage *)image
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{
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if (image != super.image) {
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super.image = image;
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[self _updateImage];
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}
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}
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- (void)setCapInsets:(UIEdgeInsets)capInsets
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{
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if (!UIEdgeInsetsEqualToEdgeInsets(_capInsets, capInsets)) {
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_capInsets = capInsets;
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[self _updateImage];
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}
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}
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- (void)setRenderingMode:(UIImageRenderingMode)renderingMode
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{
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if (_renderingMode != renderingMode) {
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_renderingMode = renderingMode;
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[self _updateImage];
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}
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}
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@end
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