- iOS 9.0+
- Xcode 8
- Swift 3 (<= 1.0.5)
- Swift 4 (>= 1.1)
You can install ElongationPreview
in several ways:
- Add source files to your project.
- Use CocoaPods:
pod 'ElongationPreview'
- Use Carthage:
github "Ramotion/elongation-preview"
First of all, import module to your source file.
import ElongationPreview
Then subclass ElongationViewController
and configure it as you wish.
class RootViewController: ElongationViewController { }
Now you must register reusable cell in tableView
. If you prefer to use Storyboards, you can drag UITableViewCell
from bottom-right menu, lay it out and change it's class to ElongationCell
. Of course, there are some specific requirements on how you can configure cell's subviews.
-
Easier way: copy DemoElongationCell from demo project and change it as you wish. Add your own views to
top
,bottom
andscalable
containers. -
If you want to create cell from scratch, this is how your cell hierarchy should look like:
bottomView
— the view which comes from behind the cell when you tap on the cell.scalableView
— the view which will be scaled when you tap on the cell.topView
— static top view, add here all the views which won't be scaled and must stay on their position.Also you must connect this constraints:
topViewHeightConstraint
,topViewTopConstraint
,bottomViewHeightConstraint
,bottomViewTopConstraint
.
📌 If you need to override
func scrollViewDidScroll(_ scrollView: UIScrollView)or
func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath)you must call
super
because some important configuration was made in these methods in superclass (ElongationViewController
).
class DetailViewController: ElongationDetailViewController { }
If you want to display some details for objects from the root
view, it's better to subclass ElongationDetailViewController
and configure it for displaying your data.
This class holds headerView
property which actually represents ElongationCell
in expanded state and it'll be used as a header for tableView
by default.
📌 Override
openDetailView(for: IndexPath)
method, create yourElongationDetailViewController
instance and callexpand(viewController: ElongationDetailViewController, animated: Bool)
method with this instance.This is the place where you need to configure your
ElongationDetailViewController
subclass.
You can customize both appearance & behaviour of ElongationPreview
control by tuning some params of ElongationConfig
and overriding shared
instance.
// Create new config.
var config = ElongationConfig()
// Change desired properties.
config.scaleViewScaleFactor = 0.9
config.topViewHeight = 190
config.bottomViewHeight = 170
config.bottomViewOffset = 20
config.parallaxFactor = 100
config.separatorHeight = 0.5
config.separatorColor = .white
// Save created config as `shared` instance.
ElongationConfig.shared = config
🗒 All parameters with their descriptions listed in
ElongationConfig
file.
Elongation Preview is released under the MIT license. See LICENSE for details.
This library is a part of a selection of our best UI open-source projects.
If you use the open-source library in your project, please make sure to credit and backlink to www.ramotion.com
Try this UI component and more like this in our iOS app. Contact us if interested.