DrawableView
A UIView subclass that allows the user to draw on it.
Add a DrawableView to your app and you will immediately be able to draw on it. Then try changing the stroke color, width, and transparency!
Features
- Stroke Color
- Stroke Width
- Stroke Transparency
- Undo
- DrawableViewDelegate
- Quad Curve Interpolation
Requirements
- iOS 9.0+
- Xcode 8.3.1
Installation
CocoaPods
You can use CocoaPods to install DrawableView by adding it to your Podfile:
pod 'DrawableView'Simply import DrawableView wherever you would like to use it.
import UIKit
import DrawableViewCarthage
Create a Cartfile that lists the framework and run carthage update. Follow the instructions to add $(SRCROOT)/Carthage/Build/iOS/DrawableView.framework to an iOS project.
github "EthanSchatzline/DrawableView"
Usage example
class ViewController: UIViewController, DrawableViewDelegate {
@IBOutlet var drawableView: DrawableView! {
didSet {
drawableView.delegate = self
drawableView.strokeColor = .blue
drawableView.strokeWidth = 12.0
drawableView.transparency = 1.0
}
}
func setDrawing(_ isDrawing: Bool) {
/*
Run some logic based on if the user is currently drawing a stroke or not.
Commonly people hide the drawing tools UI while the user is drawing and fade it back in once they stop.
*/
}
func saveDrawingToPhotoLibrary() {
guard let drawnImage = drawableView.image else { return }
UIImageWriteToSavedPhotosAlbum(drawnImage, self, nil, nil)
}
}Contribute
We would love for you to contribute to DrawableView, check the LICENSE file for more info.
Meta
Ethan Schatzline – @_Easy_E – [email protected]
Distributed under the MIT license. See LICENSE for more information.