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107 lines
3.4 KiB
Objective-C
107 lines
3.4 KiB
Objective-C
//
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// PlaygroundContainerNode.m
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// Sample
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//
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// Created by Hannah Troisi on 3/19/16.
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// Copyright © 2016 Facebook. All rights reserved.
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//
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#import "PlaygroundContainerNode.h"
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#import "PlaygroundNode.h"
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#import "ASLayoutableInspectorNode.h" // FIXME: move to ASLayoutSpecDebug
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#import "AsyncDisplayKit+Debug.h"
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#define RESIZE_HANDLE_SIZE 30
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@implementation PlaygroundContainerNode
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{
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PlaygroundNode *_playgroundNode;
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ASImageNode *_resizeHandle;
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}
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#pragma mark - Lifecycle
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- (instancetype)init
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{
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self = [super init];
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if (self) {
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self.backgroundColor = [UIColor colorWithRed:255/255.0 green:181/255.0 blue:68/255.0 alpha:1];
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self.usesImplicitHierarchyManagement = YES;
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_playgroundNode = [[PlaygroundNode alloc] init];
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_resizeHandle = [[ASImageNode alloc] init];
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_resizeHandle.image = [UIImage imageNamed:@"resizeHandle"];
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_resizeHandle.userInteractionEnabled = YES;
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[self.view addSubnode:_resizeHandle];
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UILongPressGestureRecognizer *lpgr = [[UILongPressGestureRecognizer alloc] initWithTarget:self
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action:@selector(resizePlayground:)];
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lpgr.minimumPressDuration = 0.0;
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lpgr.allowableMovement = CGFLOAT_MAX;
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[_resizeHandle.view addGestureRecognizer:lpgr];
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[ASLayoutableInspectorNode sharedInstance].flexBasis = ASRelativeDimensionMakeWithPercent(1.0);
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self.shouldVisualizeLayoutSpecs = YES;
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}
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return self;
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}
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// manually layout _resizeHandle // FIXME: add this to an overlayStack in layoutSpecThatFits?
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- (void)layout
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{
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[super layout];
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[self.view bringSubviewToFront:_resizeHandle.view];
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CGSize playgroundSize = _playgroundNode.calculatedLayout.size;
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CGRect rect = CGRectZero;
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rect.size = CGSizeMake(RESIZE_HANDLE_SIZE, RESIZE_HANDLE_SIZE);
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rect.origin = CGPointMake(playgroundSize.width - rect.size.width, playgroundSize.height - rect.size.height);
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_resizeHandle.frame = rect;
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}
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- (ASLayoutSpec *)layoutSpecThatFits:(ASSizeRange)constrainedSize
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{
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_playgroundNode.flexGrow = YES;
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_playgroundNode.flexShrink = YES;
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return [ASInsetLayoutSpec insetLayoutSpecWithInsets:UIEdgeInsetsMake(10, 10, 10, 10)
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child:_playgroundNode];
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}
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#pragma mark - Gesture Handling
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- (void)resizePlayground:(UIGestureRecognizer *)sender
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{
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NSLog(@"RESIZE PLAYGROUND");
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CGPoint firstLocation;
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if (sender.state == UIGestureRecognizerStateBegan) {
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firstLocation = [sender locationInView:sender.view];
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}
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else if (sender.state == UIGestureRecognizerStateChanged) {
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CGPoint location = [sender locationInView:sender.view];
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CGPoint translation = CGPointMake(location.x - firstLocation.x, location.y - firstLocation.y);
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[self changePlaygroundFrameWithTranslation:translation];
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}
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else if (sender.state == UIGestureRecognizerStateEnded || sender.state == UIGestureRecognizerStateCancelled || sender.state == UIGestureRecognizerStateFailed) {
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firstLocation = CGPointZero;
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}
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}
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- (void)changePlaygroundFrameWithTranslation:(CGPoint)translation
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{
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ASSizeRange constrainedSize = self.constrainedSizeForCalculatedLayout;
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constrainedSize.max.width = MAX(0, constrainedSize.max.width + translation.x);
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constrainedSize.max.height = MAX(0, constrainedSize.max.height + translation.y);
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[self.delegate relayoutWithSize:constrainedSize];
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}
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@end
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