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4ba6f451f6
* Remove preferredFrameSize * Remove -measure: * Remove -measureWithSizeRange: * Remove ASLayoutable * Remove .name * Remove deprecated style forwardings That includes following properties that are declared on ASDisplayNode and ASLayoutSpec: spacingBefore, spacingAfter, flexGrow, flexShrink, flexBasis, alignSelf, ascender, descender, sizeRange and layoutPosition. * Remove usesImplicitHierarchyManagement * Remove deprecated range update callbacks: -visibilityDidChange: -visibleStateDidChange: -displayStateDidChange: -loadStateDidChange: * Remove -clearFetchedData * Remove -cancelLayoutTransitionsInProgress * Remve ASDisplayNode+Deprecated.h * Remove ASLayoutRangeTypeRender and ASLayoutRangeTypeFetchData * Remove -[ASTableView clearContents] * Remove reloadDataImmediately * Remove ASStaticLayoutSpec * Remove ASDimensionDeprecated * Remove optional -pagerNode:constrainedSizeForNodeAtIndex: delegate method in ASPagerDelegate * Remove suppressesInvalidCollectionUpdateExceptions * Remove -[ASCollectionViewLayoutInspector initWithCollectionView] * Remove ASVideoPlayerNode.loadAssetWhenNodeBecomesVisible * Update CHANGELOG * Update license of ASLayoutSpecTests.m * Update examples/PagerNode * Remove ASEnvironmentTraitCollection * Remove -ASViewController.nodeConstrainedSize * More on removing ASLayoutable
77 lines
3.3 KiB
Objective-C
77 lines
3.3 KiB
Objective-C
//
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// ASLayoutRangeType.h
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// Texture
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//
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// Copyright (c) 2014-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the /ASDK-Licenses directory of this source tree. An additional
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// grant of patent rights can be found in the PATENTS file in the same directory.
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//
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// Modifications to this file made after 4/13/2017 are: Copyright (c) 2017-present,
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// Pinterest, Inc. Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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#import <Foundation/Foundation.h>
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#import <CoreGraphics/CGGeometry.h>
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typedef struct {
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CGFloat leadingBufferScreenfuls;
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CGFloat trailingBufferScreenfuls;
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} ASRangeTuningParameters;
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FOUNDATION_EXPORT ASRangeTuningParameters const ASRangeTuningParametersZero;
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FOUNDATION_EXPORT BOOL ASRangeTuningParametersEqualToRangeTuningParameters(ASRangeTuningParameters lhs, ASRangeTuningParameters rhs);
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/**
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* Each mode has a complete set of tuning parameters for range types.
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* Depending on some conditions (including interface state and direction of the scroll view, state of rendering engine, etc),
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* a range controller can choose which mode it should use at a given time.
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*/
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typedef NS_ENUM(NSInteger, ASLayoutRangeMode) {
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ASLayoutRangeModeUnspecified = -1,
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/**
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* Minimum mode is used when a range controller should limit the amount of work it performs.
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* Thus, fewer views/layers are created and less data is fetched, saving system resources.
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* Range controller can automatically switch to full mode when conditions change.
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*/
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ASLayoutRangeModeMinimum = 0,
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/**
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* Normal/Full mode that a range controller uses to provide the best experience for end users.
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* This mode is usually used for an active scroll view.
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* A range controller under this requires more resources compare to minimum mode.
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*/
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ASLayoutRangeModeFull,
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/**
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* Visible Only mode is used when a range controller should set its display and preload regions to only the size of their bounds.
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* This causes all additional backing stores & preloaded data to be released, while ensuring a user revisiting the view will
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* still be able to see the expected content. This mode is automatically set on all ASRangeControllers when the app suspends,
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* allowing the operating system to keep the app alive longer and increase the chance it is still warm when the user returns.
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*/
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ASLayoutRangeModeVisibleOnly,
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/**
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* Low Memory mode is used when a range controller should discard ALL graphics buffers, including for the area that would be visible
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* the next time the user views it (bounds). The only range it preserves is Preload, which is limited to the bounds, allowing
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* the content to be restored relatively quickly by re-decoding images (the compressed images are ~10% the size of the decoded ones,
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* and text is a tiny fraction of its rendered size).
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*/
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ASLayoutRangeModeLowMemory
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};
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static NSInteger const ASLayoutRangeModeCount = 4;
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typedef NS_ENUM(NSInteger, ASLayoutRangeType) {
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ASLayoutRangeTypeDisplay,
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ASLayoutRangeTypePreload
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};
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static NSInteger const ASLayoutRangeTypeCount = 2;
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