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Puyopuyo

CI Status Version Platform

English

介绍:

Youtube: https://youtu.be/3MOBCtIfRFA

Bilibili: https://www.bilibili.com/video/BV1Kh411J7vJ

交流:

Telegram: https://t.me/swift_puyopuyo

QQ: 830599565

布局耗时

LinearLayout

- 5 10 30 50 80 100 120 150 180 200
Puyopuyo 0.133 0.2081 0.5259 0.7739 1.141 1.3921 1.6517 2.0799 2.4759 2.7499
Yoga 0.1549 0.272 0.678 1.0211 1.4729 1.8479 2.202 2.7499 3.2939 3.664
TangramKit 0.1859 0.3151 0.7939 1.1901 1.7089 2.1331 2.5599 3.201 3.8499 4.2488
UIStackView 0.5679 0.699 1.7571 2.7871 5.0063 6.901 9.392 13.741 19.3428 23.3399

LinearLayoutImage

FlowLayout

- 3 5 10 50 80 100 120 150 180 200
Puyopuyo 0.1299 0.1292 0.2298 0.9217 1.398 1.7228 2.0749 2.5968 3.1189 3.4549
Yoga 0.1039 0.1449 0.262 1.132 1.8072 2.2501 2.7101 3.39 4.0788 4.549
TangramKit 0.1339 0.123 0.209 0.9109 1.4457 1.7881 2.1469 2.675 3.2138 3.5629

FlowLayoutImage

View depth

- 4 8 12 16 20 24 28 32 36 40
Puyopuyo 1.0719 1.5108 1.7547 1.6169 1.4448 1.739 2.0349 2.2962 2.671 2.8882
Yoga 2.3851 4.7698 6.6361 8.4819 11.2879 16.4551 23.0069 31.568 42.9677 55.4869
TangramKit 1.7189 2.711 2.932 3.117 3.7751 4.508 5.2759 6.1821 6.8421 7.6298

ViewDepthLayoutImage

描述

基于数据驱动的声明式UIKit

Puyopuyo是基于Frame进行布局,并且提供了一套响应式的数据驱动开发模型的UI框架。

Requirements

swift 5.1

Installation

pod 'Puyopuyo'

使用

一个简单的菜单Cell,可以如下实现,根据不同的布局规则,子节点将根据规则自动布局。内建的布局Box遵循FlexBox规则。

/**
 VBox            HBox
 |-----------|   |-------------------|
 |Title      |   |Title   Description|
 |           |   |-------------------|
 |Description|
 |-----------|
 */
 
VBox().attach {
    UILabel().attach($0)
        .text("Title")
        .fontSize(20, weight: .bold)

    UILabel().attach($0)
        .text("Description")
}
.space(20)

// or
/**
VFlow       HFlow
|-------|   |-------|
|0  1  2|   |0  3  6|
|3  4  5|   |1  4  7|
|6  7   |   |2  5   |
|-------|   |-------|
 */
VFlow(count: 3).attach {
    for i in 0..<8 {
        UILabel().attach($0)
            .text(i.description)
    }
}
.space(20)

框架内提供三种布局方式

LinearBox, FlowBox, ZBox. 继承关系如下:

BoxView
    |-- ZBox
    |-- LinearBox
        |-- HBox
        |-- VBox
    |-- FlowBox
        |-- HFlow
        |-- VFlow
    

布局的核心是UI节点描述 Measure Regulator

Measure 属性

属性 描述
margin 描述本节点的外边距 UIEdgeInset, default: .zero
alignment 描述本节在父布局的偏移位置 .none, .left, .top, .bottom, .vertCenter, .horzCenter, default: .none
size 描述本节点尺寸 SizeDescription
.fixed 固定尺寸
.wrap 包裹所有子节点的尺寸
.ratio 占剩余空间的比例
.aspectRatio: width / height
default: .wrap, 详情查看Demo:Size Properties
flowEnding 当前节点在 FlowBox 中,并且arrangeCount = 0才会生效,标记当前节点是否为当前行最后一个节点 Bool, default: false
activated 描述本节点是否参与计算 Bool, default: true

Regulator & ZBox 属性

ZBox 继承于 Regulator

属性 描述
justifyContent 控制所有子节点在Box内的偏移位置,当子节点设置了 alignment 时,则优先使用 alignment .left, .top, .bottom, .vertCenter, .horzCenter, default: .none
padding 控制当前布局的内边距 UIEdgeInset, default: .zero

LinearRegulator 属性

LinearRegulator 继承于 Regulator

属性 描述
space 控制布局内子节点之间的间距 CGFloat, default: 0
format 控制子节点在主轴上的分布方式 .leading, .center, .between, .round, .trailing, default: .leading
reverse 控制子节点的排列方式是否于添加顺序相反 Bool default: false

FlowRegulator 属性

FlowRegulator 继承于 LinearRegulator

属性 描述
arrange 控制布局内每一列的数量,当 arrange = 0 时,则根据内容来自动决定是否换行 Int, default: 0
itemSpace 控制布局单列内的节点间距 CGFloat, default: 0
runSpace 控制布局内每列之间的间距 CGFloat, default: 0
format 控制子节点在单列上的分布方式 .leading, .center, .between, .round, .trailing, default: .leading
runFormat 控制布局内列的分布方式 .leading, .center, .between, .round, .trailing, default: .leading
runRowSize 控制布局内列的分布方式 (Int) -> SizeDescription, default: .wrap(shrink: 1)

数据驱动

声明式的UI进行布局之后,当数据变化后,UI将自动根据需要重新布局。

let text = State("")
    
VBox().attach {
    UILabel().attach($0)
        .text("Title")

    UILabel().attach($0)
        .text(text)
}

// do when some data come back
text.value = "My Description"

// if you are using RxSwift that would be another good choise
// make `Observable` implements Outputing protocol
extension Observable: Outputing {
    public typealias OutputType = Element
    /// .... some code
}

func getDescription() -> Observable<String> {
    // get some description by network or other async works
}

// use in view declare
UILabel().attach($0)
    .text(getDescription())

注意:数据驱动的所有逻辑遵循RxSwift的使用逻辑,请注意内存泄露

动画

View提供一个扩展属性 view.py_animator. 类型为 protocol Animator {}

在BoxView进行布局后,给子view进行位置进行赋值时,会调用该对象的animate方法,并且会给对应的view创建独立的动画。

当子view没有设置动画,会沿用其父布局(BoxView)的动画

public struct ExpandAnimator: Animator {
    public init(duration: TimeInterval = 0.3) {
        self.duration = duration
    }

    public var duration: TimeInterval
    public func animate(_ view: UIView, size: CGSize, center: CGPoint, animations: @escaping () -> Void) {
        let realSize = view.bounds.size
        let realCenter = view.center
        if realSize != size || realCenter != center {
            if realSize == .zero, realCenter == .zero {
                runAsNoneAnimation {
                    view.center = center
                    let scale: CGFloat = 0.5
                    view.bounds.size = CGSize(width: size.width * scale, height: size.height * scale)
                    view.layer.transform = CATransform3DMakeRotation(.pi / 8 + .pi, 0, 0, 1)
                }
            }

            UIView.animate(withDuration: duration, delay: 0, usingSpringWithDamping: 2, initialSpringVelocity: 5, options: [.curveEaseOut, .overrideInheritedOptions, .overrideInheritedDuration], animations: {
                animations()
                if realSize == .zero, realCenter == .zero {
                    view.layer.transform = CATransform3DIdentity
                }
            }, completion: nil)
        } else {
            animations()
        }
    }
}

具体查看 Demo: Animation

自定义View

因为布局自身也是一个view,所以在自定义view时,可以直接继承相应的Box。降低view层级。

class MyView: VBox {
    override func buildBody() {
        // do your view declare here
    }
}

自定义view的状态与事件管理

一个复杂的View通常以输入数据进行展示,通过抛出事件进行交互。在UIKit里面通常体现为 DataSource, Delegate.

在系统里,提供了一个交互模式,进行定义。

class MyView: VBox, Stateful, Eventable {
    // declare your dataSource you need
    struct ViewState {
        var name: String?
        var title: String?
    }
    // declare event that will occured
    enum Event {
        case onConfirmed
    }
    /// declare in Stateful implement by this class
    let state = State(ViewState())
    /// declare in Eventable implement by this class
    let emitter = SimpleIO<Event>()

    override func buildBody() {
        attach {
            UILabel().attach($0)
                .text(state.map(\.name)) // use map to transform value

            UILabel().attach($0)
                .text(binder.title) // use binder dynamic member lookup to find value

            UIButton().attach($0)
                .text("Confirm")
                .bind(event: .touchUpInside, input: emitter.asInput { _ in .onConfirmed })
        }
    }
}

// Use view

let state = State(MyView.ViewState())

MyView().attach($0)
    .state(state) // bind your data source
    .onEvent(Inputs { event in
        // do your logic when event occured
    })
    

样式

系统提供 Decorable, Style 两个接口,进行定义样式。并给UIView提供属性 py_styleSheet 进行样式的设置。

详情见Demo: Style

// declare style
let styles: [Style] = [
    (\UIView.backgroundColor).getStyle(with: .white),
    TapRippleStyle(),
    (\UILabel.text).getStyle(with: "Click"),
    (\UIView.isUserInteractionEnabled).getStyle(with: true)
]
// Use style
UILabel().attach()
    .styles(styles)

扩展Puyo

根据常用操作,系统已经提供了声明式中常用的API,详情见 Puyo+xxxx.swift.

若有更多需求,可自行扩展Puyo,期待您的贡献

Author

Jrwong, jr-wong@qq.com

License

Puyopuyo is available under the MIT license. See the LICENSE file for more info.