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Просмотр файла: ImageProps.js
/**
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @flow strict-local
* @format
*/
'use strict';
import type {ViewProps} from '../Components/View/ViewPropTypes';
import type {EdgeInsetsProp} from '../StyleSheet/EdgeInsetsPropType';
import type {
ColorValue,
ImageStyleProp,
ViewStyleProp,
} from '../StyleSheet/StyleSheet';
import type {
LayoutChangeEvent,
NativeSyntheticEvent,
} from '../Types/CoreEventTypes';
import type {ImageResizeMode} from './ImageResizeMode';
import type {ImageSource, ImageURISource} from './ImageSource';
import type {ImageType} from './ImageTypes.flow';
import * as React from 'react';
export type ImageSourcePropType = ImageSource;
type ImageProgressEventDataIOS = {
loaded: number,
total: number,
};
/**
* @see ImagePropsIOS.onProgress
*/
export type ImageProgressEventIOS = NativeSyntheticEvent<
$ReadOnly<ImageProgressEventDataIOS>,
>;
type ImageErrorEventData = {
error: string,
};
export type ImageErrorEvent = NativeSyntheticEvent<
$ReadOnly<ImageErrorEventData>,
>;
type ImageLoadEventData = {
source: {
height: number,
width: number,
uri: string,
},
};
export type ImageLoadEvent = NativeSyntheticEvent<
$ReadOnly<ImageLoadEventData>,
>;
export type ImagePropsIOS = $ReadOnly<{
/**
* A static image to display while loading the image source.
*
* See https://reactnative.dev/docs/image#defaultsource
*/
defaultSource?: ?ImageSource,
/**
* Invoked when a partial load of the image is complete.
*
* See https://reactnative.dev/docs/image#onpartialload
*/
onPartialLoad?: ?() => void,
/**
* Invoked on download progress with `{nativeEvent: {loaded, total}}`.
*
* See https://reactnative.dev/docs/image#onprogress
*/
onProgress?: ?(event: ImageProgressEventIOS) => void,
}>;
export type ImagePropsAndroid = $ReadOnly<{
/**
* similarly to `source`, this property represents the resource used to render
* the loading indicator for the image, displayed until image is ready to be
* displayed, typically after when it got downloaded from network.
*/
loadingIndicatorSource?: ?(number | $ReadOnly<ImageURISource>),
progressiveRenderingEnabled?: ?boolean,
fadeDuration?: ?number,
/**
* The mechanism that should be used to resize the image when the image's dimensions
* differ from the image view's dimensions. Defaults to `auto`.
*
* - `auto`: Use heuristics to pick between `resize` and `scale`.
*
* - `resize`: A software operation which changes the encoded image in memory before it
* gets decoded. This should be used instead of `scale` when the image is much larger
* than the view.
*
* - `scale`: The image gets drawn downscaled or upscaled. Compared to `resize`, `scale` is
* faster (usually hardware accelerated) and produces higher quality images. This
* should be used if the image is smaller than the view. It should also be used if the
* image is slightly bigger than the view.
*
* - `none`: No sampling is performed and the image is displayed in its full resolution. This
* should only be used in rare circumstances because it is considered unsafe as Android will
* throw a runtime exception when trying to render images that consume too much memory.
*
* More details about `resize` and `scale` can be found at http://frescolib.org/docs/resizing-rotating.html.
*
* @platform android
*/
resizeMethod?: ?('auto' | 'resize' | 'scale' | 'none'),
/**
* When the `resizeMethod` is set to `resize`, the destination dimensions are
* multiplied by this value. The `scale` method is used to perform the
* remainder of the resize.
* This is used to produce higher quality images when resizing to small dimensions.
* Defaults to 1.0.
*/
resizeMultiplier?: ?number,
}>;
export type ImagePropsBase = $ReadOnly<{
...Omit<ViewProps, 'style'>,
/**
* When true, indicates the image is an accessibility element.
*
* See https://reactnative.dev/docs/image#accessible
*/
accessible?: ?boolean,
/**
* Internal prop to set an "Analytics Tag" that can will be set on the Image
*/
internal_analyticTag?: ?string,
/**
* The text that's read by the screen reader when the user interacts with
* the image.
*
* See https://reactnative.dev/docs/image#accessibilitylabel
*/
accessibilityLabel?: ?Stringish,
/**
* Alias for accessibilityLabel
* See https://reactnative.dev/docs/image#accessibilitylabel
*/
'aria-label'?: ?Stringish,
/**
* Represents the nativeID of the associated label. When the assistive technology focuses on the component with this props.
*
* @platform android
*/
'aria-labelledby'?: ?string,
/**
* The text that's read by the screen reader when the user interacts with
* the image.
*
* See https://reactnative.dev/docs/image#alt
*/
alt?: ?Stringish,
/**
* blurRadius: the blur radius of the blur filter added to the image
*
* See https://reactnative.dev/docs/image#blurradius
*/
blurRadius?: ?number,
/**
* See https://reactnative.dev/docs/image#capinsets
*/
capInsets?: ?EdgeInsetsProp,
/**
* Adds the CORS related header to the request.
* Similar to crossorigin from HTML.
*
* See https://reactnative.dev/docs/image#crossorigin
*/
crossOrigin?: ?('anonymous' | 'use-credentials'),
/**
* Height of the image component.
*
* See https://reactnative.dev/docs/image#height
*/
height?: number,
/**
* Width of the image component.
*
* See https://reactnative.dev/docs/image#width
*/
width?: number,
/**
* Invoked on load error with `{nativeEvent: {error}}`.
*
* See https://reactnative.dev/docs/image#onerror
*/
onError?: ?(event: ImageErrorEvent) => void,
/**
* onLayout function
*
* Invoked on mount and layout changes with
*
* {nativeEvent: { layout: {x, y, width, height} }}.
*
* See https://reactnative.dev/docs/image#onlayout
*/
onLayout?: ?(event: LayoutChangeEvent) => mixed,
/**
* Invoked when load completes successfully.
*
* See https://reactnative.dev/docs/image#onload
*/
onLoad?: ?(event: ImageLoadEvent) => void,
/**
* Invoked when load either succeeds or fails.
*
* See https://reactnative.dev/docs/image#onloadend
*/
onLoadEnd?: ?() => void,
/**
* Invoked on load start.
*
* See https://reactnative.dev/docs/image#onloadstart
*/
onLoadStart?: ?() => void,
/**
* The image source (either a remote URL or a local file resource).
*
* This prop can also contain several remote URLs, specified together with their width and height and potentially with scale/other URI arguments.
* The native side will then choose the best uri to display based on the measured size of the image container.
* A cache property can be added to control how networked request interacts with the local cache.
*
* The currently supported formats are png, jpg, jpeg, bmp, gif, webp (Android only), psd (iOS only).
*
* See https://reactnative.dev/docs/image#source
*/
source?: ?ImageSource,
/**
* A string indicating which referrer to use when fetching the resource.
* Similar to referrerpolicy from HTML.
*
* See https://reactnative.dev/docs/image#referrerpolicy
*/
referrerPolicy?: ?(
| 'no-referrer'
| 'no-referrer-when-downgrade'
| 'origin'
| 'origin-when-cross-origin'
| 'same-origin'
| 'strict-origin'
| 'strict-origin-when-cross-origin'
| 'unsafe-url'
),
/**
* Determines how to resize the image when the frame doesn't match the raw
* image dimensions.
*
* 'cover': Scale the image uniformly (maintain the image's aspect ratio)
* so that both dimensions (width and height) of the image will be equal
* to or larger than the corresponding dimension of the view (minus padding).
*
* 'contain': Scale the image uniformly (maintain the image's aspect ratio)
* so that both dimensions (width and height) of the image will be equal to
* or less than the corresponding dimension of the view (minus padding).
*
* 'stretch': Scale width and height independently, This may change the
* aspect ratio of the src.
*
* 'repeat': Repeat the image to cover the frame of the view.
* The image will keep it's size and aspect ratio. (iOS only)
*
* 'center': Scale the image down so that it is completely visible,
* if bigger than the area of the view.
* The image will not be scaled up.
*
* 'none': Do not resize the image. The image will be displayed at its intrinsic size.
*
* See https://reactnative.dev/docs/image#resizemode
*/
resizeMode?: ?ImageResizeMode,
/**
* A unique identifier for this element to be used in UI Automation
* testing scripts.
*
* See https://reactnative.dev/docs/image#testid
*/
testID?: ?string,
/**
* Changes the color of all the non-transparent pixels to the tintColor.
*
* See https://reactnative.dev/docs/image#tintcolor
*/
tintColor?: ColorValue,
/**
* A string representing the resource identifier for the image. Similar to
* src from HTML.
*
* See https://reactnative.dev/docs/image#src
*/
src?: ?string,
/**
* Similar to srcset from HTML.
*
* See https://reactnative.dev/docs/image#srcset
*/
srcSet?: ?string,
children?: empty,
}>;
export type ImageProps = $ReadOnly<{
...ImagePropsIOS,
...ImagePropsAndroid,
...ImagePropsBase,
/**
* See https://reactnative.dev/docs/image#style
*/
style?: ?ImageStyleProp,
}>;
export type ImageBackgroundProps = $ReadOnly<{
...ImageProps,
children?: React.Node,
/**
* Style applied to the outer View component
*
* See https://reactnative.dev/docs/imagebackground#style
*/
style?: ?ViewStyleProp,
/**
* Style applied to the inner Image component
*
* See https://reactnative.dev/docs/imagebackground#imagestyle
*/
imageStyle?: ?ImageStyleProp,
/**
* Allows to set a reference to the inner Image component
*
* See https://reactnative.dev/docs/imagebackground#imageref
*/
imageRef?: React.RefSetter<React.ElementRef<ImageType>>,
}>;
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