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MultiSourceHelper.java -> MultiSourceHelper.kt (#43776)
Summary: Pull Request resolved: https://github.com/facebook/react-native/pull/43776 ## Changelog: [Internal] - As in the title. Reviewed By: alanleedev Differential Revision: D55640126 fbshipit-source-id: 1e35c77ebb56b8cf419a28dccfbbf695747b92e4
This commit is contained in:
Ruslan Shestopalyuk
committed by
Facebook GitHub Bot
Facebook GitHub Bot
parent
c35cc43a6c
commit
5ea511736b
@@ -6199,15 +6199,16 @@ public class com/facebook/react/views/imagehelper/ImageSource {
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public fun isResource ()Z
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}
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public class com/facebook/react/views/imagehelper/MultiSourceHelper {
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public fun <init> ()V
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public static fun getBestSourceForSize (IILjava/util/List;)Lcom/facebook/react/views/imagehelper/MultiSourceHelper$MultiSourceResult;
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public static fun getBestSourceForSize (IILjava/util/List;D)Lcom/facebook/react/views/imagehelper/MultiSourceHelper$MultiSourceResult;
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public final class com/facebook/react/views/imagehelper/MultiSourceHelper {
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public static final field INSTANCE Lcom/facebook/react/views/imagehelper/MultiSourceHelper;
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public static final fun getBestSourceForSize (IILjava/util/List;)Lcom/facebook/react/views/imagehelper/MultiSourceHelper$MultiSourceResult;
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public static final fun getBestSourceForSize (IILjava/util/List;D)Lcom/facebook/react/views/imagehelper/MultiSourceHelper$MultiSourceResult;
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}
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public class com/facebook/react/views/imagehelper/MultiSourceHelper$MultiSourceResult {
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public fun getBestResult ()Lcom/facebook/react/views/imagehelper/ImageSource;
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public fun getBestResultInCache ()Lcom/facebook/react/views/imagehelper/ImageSource;
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public final class com/facebook/react/views/imagehelper/MultiSourceHelper$MultiSourceResult {
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public final field bestResult Lcom/facebook/react/views/imagehelper/ImageSource;
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public final field bestResultInCache Lcom/facebook/react/views/imagehelper/ImageSource;
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public fun <init> (Lcom/facebook/react/views/imagehelper/ImageSource;Lcom/facebook/react/views/imagehelper/ImageSource;)V
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}
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public final class com/facebook/react/views/imagehelper/ResourceDrawableIdHelper {
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+2
-2
@@ -578,8 +578,8 @@ public class ReactImageView extends GenericDraweeView {
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} else if (hasMultipleSources()) {
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MultiSourceResult multiSource =
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MultiSourceHelper.getBestSourceForSize(getWidth(), getHeight(), mSources);
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mImageSource = multiSource.getBestResult();
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mCachedImageSource = multiSource.getBestResultInCache();
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mImageSource = multiSource.bestResult;
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mCachedImageSource = multiSource.bestResultInCache;
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return;
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}
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-105
@@ -1,105 +0,0 @@
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/*
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT 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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package com.facebook.react.views.imagehelper;
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import androidx.annotation.Nullable;
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import com.facebook.imagepipeline.core.ImagePipeline;
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import com.facebook.imagepipeline.core.ImagePipelineFactory;
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import com.facebook.infer.annotation.Nullsafe;
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import java.util.List;
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/** Helper class for dealing with multisource images. */
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@Nullsafe(Nullsafe.Mode.LOCAL)
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public class MultiSourceHelper {
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public static class MultiSourceResult {
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private final @Nullable ImageSource bestResult;
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private final @Nullable ImageSource bestResultInCache;
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private MultiSourceResult(
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@Nullable ImageSource bestResult, @Nullable ImageSource bestResultInCache) {
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this.bestResult = bestResult;
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this.bestResultInCache = bestResultInCache;
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}
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/**
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* Get the best result overall (closest in size to the view's size). Can be null if there were
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* no sources to choose from, or if there were more than 1 sources but width/height were 0.
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*/
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public @Nullable ImageSource getBestResult() {
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return bestResult;
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}
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/**
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* Get the best result (closest in size to the view's size) that is also in cache. If this would
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* be the same as the source from {@link #getBestResult()}, this will return {@code null}
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* instead.
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*/
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public @Nullable ImageSource getBestResultInCache() {
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return bestResultInCache;
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}
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}
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public static MultiSourceResult getBestSourceForSize(
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int width, int height, List<ImageSource> sources) {
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return getBestSourceForSize(width, height, sources, 1.0d);
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}
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/**
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* Chooses the image source with the size closest to the target image size.
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*
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* @param width the width of the view that will be used to display this image
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* @param height the height of the view that will be used to display this image
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* @param sources the list of potential image sources to choose from
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* @param multiplier the area of the view will be multiplied by this number before calculating the
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* best source; this is useful if the image will be displayed bigger than the view (e.g.
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* zoomed)
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*/
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public static MultiSourceResult getBestSourceForSize(
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int width, int height, List<ImageSource> sources, double multiplier) {
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// no sources
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if (sources.isEmpty()) {
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return new MultiSourceResult(null, null);
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}
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// single source
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if (sources.size() == 1) {
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return new MultiSourceResult(sources.get(0), null);
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}
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// For multiple sources, we first need the view's size in order to determine the best source to
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// load. If we haven't been measured yet, return null and wait for onSizeChanged.
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if (width <= 0 || height <= 0) {
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return new MultiSourceResult(null, null);
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}
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ImagePipeline imagePipeline = ImagePipelineFactory.getInstance().getImagePipeline();
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ImageSource best = null;
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ImageSource bestCached = null;
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final double viewArea = width * height * multiplier;
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double bestPrecision = Double.MAX_VALUE;
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double bestCachePrecision = Double.MAX_VALUE;
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for (ImageSource source : sources) {
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double precision = Math.abs(1.0 - source.getSize() / viewArea);
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if (precision < bestPrecision) {
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bestPrecision = precision;
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best = source;
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}
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if (precision < bestCachePrecision
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&& (imagePipeline.isInBitmapMemoryCache(source.getUri())
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|| imagePipeline.isInDiskCacheSync(source.getUri()))) {
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bestCachePrecision = precision;
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bestCached = source;
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}
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}
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if (bestCached != null && best != null && bestCached.getSource().equals(best.getSource())) {
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bestCached = null;
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}
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return new MultiSourceResult(best, bestCached);
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}
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}
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+89
@@ -0,0 +1,89 @@
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/*
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT 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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package com.facebook.react.views.imagehelper
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import com.facebook.imagepipeline.core.ImagePipelineFactory
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/** Helper class for dealing with multisource images. */
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public object MultiSourceHelper {
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@JvmStatic
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public fun getBestSourceForSize(
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width: Int,
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height: Int,
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sources: List<ImageSource>
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): MultiSourceResult = getBestSourceForSize(width, height, sources, 1.0)
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/**
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* Chooses the image source with the size closest to the target image size.
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*
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* @param width the width of the view that will be used to display this image
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* @param height the height of the view that will be used to display this image
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* @param sources the list of potential image sources to choose from
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* @param multiplier the area of the view will be multiplied by this number before calculating the
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* best source; this is useful if the image will be displayed bigger than the view (e.g. zoomed)
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*/
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@JvmStatic
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public fun getBestSourceForSize(
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width: Int,
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height: Int,
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sources: List<ImageSource>,
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multiplier: Double
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): MultiSourceResult {
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// no sources
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if (sources.isEmpty()) {
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return MultiSourceResult(null, null)
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}
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// single source
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if (sources.size == 1) {
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return MultiSourceResult(sources[0], null)
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}
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// For multiple sources, we first need the view's size in order to determine the best source to
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// load. If we haven't been measured yet, return null and wait for onSizeChanged.
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if (width <= 0 || height <= 0) {
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return MultiSourceResult(null, null)
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}
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val imagePipeline = ImagePipelineFactory.getInstance().imagePipeline
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var best: ImageSource? = null
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var bestCached: ImageSource? = null
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val viewArea = width * height * multiplier
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var bestPrecision = Double.MAX_VALUE
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var bestCachePrecision = Double.MAX_VALUE
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for (source in sources) {
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val precision = Math.abs(1.0 - source.size / viewArea)
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if (precision < bestPrecision) {
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bestPrecision = precision
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best = source
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}
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if (precision < bestCachePrecision &&
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(imagePipeline.isInBitmapMemoryCache(source.uri) ||
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imagePipeline.isInDiskCacheSync(source.uri))) {
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bestCachePrecision = precision
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bestCached = source
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}
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}
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if (bestCached != null && best != null && bestCached.source == best.source) {
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bestCached = null
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}
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return MultiSourceResult(best, bestCached)
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}
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public class MultiSourceResult(
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/**
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* Get the best result overall (closest in size to the view's size). Can be null if there were
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* no sources to choose from, or if there were more than 1 sources but width/height were 0.
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*/
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@JvmField public val bestResult: ImageSource?,
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/**
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* Get the best result (closest in size to the view's size) that is also in cache. If this
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* would be the same as the source from [.getBestResult], this will return `null` instead.
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*/
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@JvmField public val bestResultInCache: ImageSource?
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)
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}
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