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8bb4eba080
Initial attempt to get display traits working with ASEnvironment. To get proper ASDisplayTraits support, you must use an ASViewController. The ASViewController implements UITraitCollection-related methods (`traitCollectionDidChange:`, `willTransitionToTraitCollection:withTransitionCoordinator:`, viewWillTransitionToSize:withTransitionCoordinator`) to update the internal ASDisplayTraits and propagate them to subnodes. ASTableNode and ASCollectionNode don't actually have their cells as subnodes, so a little bit of trickery is involved (on `setEnvironment:` the table/collection node gets its data controllers completedNodes and propagates the new traits. see `ASDisplayTraitsCollectionTableSetEnvironmentState`). The data controller also passes the current display traits when creating new cells. ASViewController also supports the ability to return a custom set of display traits. So if you have a modal dialog that should always be told it is in a compact size class, you can set the override block before displaying the VC. A new example, called Display Traits, has been added. It shows how display traits can be used in a ASViewController with a normal ASDisplayNode as its root, as well as in ASViewControllers hosting table nodes and collection nodes. There is also an example of overriding the default display traits of a VC. Please provide feedback!
73 lines
2.4 KiB
Objective-C
73 lines
2.4 KiB
Objective-C
/* This file provided by Facebook is for non-commercial testing and evaluation
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* purposes only. Facebook reserves all rights not expressly granted.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#import "CollectionViewController.h"
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#import "KittenNode.h"
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@interface CollectionViewController () <ASCollectionDelegate, ASCollectionDataSource>
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@property (nonatomic, strong) ASCollectionNode *collectionNode;
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@end
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@implementation CollectionViewController
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- (instancetype)init
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{
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UICollectionViewFlowLayout *layout = [[UICollectionViewFlowLayout alloc] init];
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layout.minimumLineSpacing = 10;
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layout.minimumInteritemSpacing = 10;
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ASCollectionNode *collectionNode = [[ASCollectionNode alloc] initWithCollectionViewLayout:layout];
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if (!(self = [super initWithNode:collectionNode]))
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return nil;
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self.title = @"Collection Node";
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_collectionNode = collectionNode;
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collectionNode.dataSource = self;
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collectionNode.delegate = self;
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return self;
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}
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- (void)viewDidLoad
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{
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[super viewDidLoad];
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self.collectionNode.view.contentInset = UIEdgeInsetsMake(20, 10, CGRectGetHeight(self.tabBarController.tabBar.frame), 10);
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}
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#pragma mark - ASCollectionDataSource
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- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
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{
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return 50;
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}
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- (ASCellNode *)collectionView:(ASCollectionView *)collectionView nodeForItemAtIndexPath:(NSIndexPath *)indexPath
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{
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KittenNode *cell = [[KittenNode alloc] init];
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cell.textNode.maximumNumberOfLines = 3;
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cell.imageTappedBlock = ^{
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[KittenNode defaultImageTappedAction:self];
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};
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return cell;
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}
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- (ASSizeRange)collectionView:(ASCollectionView *)collectionView constrainedSizeForNodeAtIndexPath:(NSIndexPath *)indexPath
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{
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ASDisplayTraits displayTraits = self.collectionNode.environmentState.displayTraits;
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if (displayTraits.horizontalSizeClass == UIUserInterfaceSizeClassRegular) {
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return ASSizeRangeMake(CGSizeMake(200, 120), CGSizeMake(200, 120));
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}
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return ASSizeRangeMake(CGSizeMake(132, 180), CGSizeMake(132, 180));
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}
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@end
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