FMPhotoPicker: A Swift repository from vkcldhkd

FMPhotoPicker is a modern, simple and zero-dependency photo picker with an elegant and customizable image editor

Quick demo

Batch select/deselect	Smooth transitions	Filter	Crop

Features

Requirements

iOS 9.0+

Installation

SwiftPM

dependencies: [
  .package(url: "https://github.com/congnd/FMPhotoPicker.git", .exact("1.3.0")),
]

Carthage

Insert the following line in your Carthfile:

git "git@github.com:congnd/FMPhotoPicker.git"

and run carthage update FMPhotoPicker

CocoaPods

FMPhotoPicker is now available in CocoaPods
You want to add pod 'FMPhotoPicker', '~> 1.3.0' similar to the following to your Podfile:

target 'MyApp' do
  pod 'FMPhotoPicker', '~> 1.3.0'
end

Then run a pod install inside your terminal.

Usage

Create a configuration object

var config = FMPhotoPickerConfig()

For details, see Configuration

Picker

let picker = FMPhotoPickerViewController(config: config)
picker.delegate = self
self.present(picker, animated: true)

From iOS 10, you have to add the Privacy - Photo Library Usage Description into your Info.plist file.

Editor

let editor = FMImageEditorViewController(config: config, sourceImage: image)
editor.delegate = self
self.present(editor, animated: true)

Delegation methods

Implement FMPhotoPickerViewControllerDelegate protocol to handle selected photos.

func fmPhotoPickerController(_ picker: FMPhotoPickerViewController, didFinishPickingPhotoWith photos: [UIImage])
func fmPhotoPickerController(_ picker: FMPhotoPickerViewController, didFinishPickingPhotoWith assets: [PHAsset])

If you prefer to receive selected photos in type of PHAsset instead of UIImage then don't forget to set the shouldReturnAsset to true and implement the corresponding delegation method.

Implement FMImageEditorViewControllerDelegate protocol to handle ouput image

func fmImageEditorViewController(_ editor: FMImageEditorViewController, didFinishEdittingPhotoWith photo: UIImage)

Configuration

The configuration supports the following parameters:

mediaTypes
selectMode
maxImage
maxVideo
availableFilters
availableCrops
useCropFirst
alertController
shouldReturnAsset
forceCropEnabled
eclipsePreviewEnabled
strings

Reference

mediaTypes
An array that indicates the media types to be accessed by the picker controller.
Type: [FMMediaType]
Default: [.image, .video]
selectMode
Photo selection mode that can be in single or multiple mode.
Type: : FMSelectMode
Default is multiple
maxImage
The maximum number of images can be selected. Type: Int
Default: 10
maxVideo
The maximum number of videos can be selected.
Type: Int
Default is 10
availableFilters
Filter options that are used in editor. Set this parameter to nil to make the filter menu be unavailable in the editor FMPhotoEditor provides some default filters that will be fit to you.
Type: [FMFilterable]?
Default: all filters are provided by FMPhotoPicker.
availableCrops
Crop options that is used in editor. Set this parameter to nil to make the cropping menu be unavailable in the editor FMPhotoEditor provides some default crops that will be fit to you.
Type: [FMCroppable]? Default: all crops provided by FMPhotoPicker.

You are not allowed to use the editor without giving it at least one crop option or one filter option

useCropFirst
An option that indicates whether the crop menu should be selected by default in the FMImageEditorViewController.
Type: Bool
Default: false
alertController
An alert controller to show the confirmation view to an user with 2 options: Ok or Cancel.
Type: FMAlertable
Default: FMAlert
shouldReturnAsset
Whether you want FMPhotoPicker returns PHAsset instead of UIImage. FMPhotoPicker chooses a proper delegation method to be invoked when user finishes picking based on this configuration Type: Bool Default: false
forceCropEnabled
A bool value that indicates whether force mode is enabled.
If true is set, only the first crop in the availableCrops is used in the editor.
And that crop's ration becomes force crop ratio.
Type: FMAlertable
Default: false
eclipsePreviewEnabled
A bool value that indicates whether the preview of image should be displayed in rounded image.
Type: Bool Default: false
strings
A dictionary that allows you to customize language for your app.
For details, see FMPhotoPickerConfig.swift
Type: Dictionary

Customization

Custom filter

You can freely create your own filter by implementing the FMFilterable protocol.

public protocol FMFilterable {
    func filter(image: UIImage) -> UIImage
    func filterName() -> String
}

Be careful that the filterName is used to determine whether the two filters are the same.
Make sure that your filter's names are not duplicated, especially with the default filters that you want to use.

Custom cropping

Similar as filter function, FMPhotoPicker provides the capability to use your own cropping by implementing the FMCroppable protocol.

public protocol FMCroppable {
    func crop(image: UIImage, toRect rect: CGRect) -> UIImage
    func name(string: [String: String]) -> String
    func icon() -> UIImage
    func ratio() -> FMCropRatio?
}

The func name(strings: [String: String]) -> String will receive the strings configuration from configuration object. It allows you customize the cropping while keeping all your language setting in only one place.

The name() method is also used as identifier for the cropping.
Thus, make sure you do not have any duplicate of the cropping name.

Custom alert view controller

You can use your own view style for the confirmation view by implementing the FMAlertable protocol.

public protocol FMAlertable {
    func show(in viewController: UIViewController, ok: @escaping () -> Void, cancel: @escaping () -> Void)
}

Developer

@congnd

License

FMPhotoPicker is released under the MIT license. See LICENSE for details.

vkcldhkd/FMPhotoPicker