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inula-charts

v0.0.2

Published

a high performance charts library for openinula

Downloads

2

Readme

inula-charts GitHub npm version npm downloads

inula-charts 是专门为前端框架 openInula 打造的高性能图表组件库。我们支持以 JSX 的形式简单的创建高性能图形元素与图表。我们提供了一套基础图形组件,开发者可以基于这套基础组件扩展符合自己需求的应用。在此基础之上,我们开发了大量常用的图表组件:柱状图、折线图、饼状图、K线图等。

查看案例演示

拉取代码到本地,并安装依赖,然后在项目根目录执行如下指令启动项目

yarn start

项目启动之后,可以在首页查看 demo,其中包含了 30 个演示案例。

下载

执行如下指令可将 inula-charts 下载到项目中

yarn add inula-charts

使用

import { useState } from 'openinula'
import { Stage, Group, Rect, Circle } from 'inula-charts'

function App() {
  return (
    <div>
      <button
        onClick={() => {
          setX(55)
        }}
      >
        setX
      </button>
      <Stage>
        <Group>
          <Rect x={120} y={10} width={100} height={100} fillStyle="blue" />
          <Rect x={180} y={10} width={100} height={100} fillStyle="red" />
        </Group>

        <Circle
          x={0}
          y={36}
          radius={30}
          fillStyle="red"
          cursor="pointer"
          onclick={() => {
            console.log(1234)
          }}
          onmouseenter={() => {
            console.log('enter')
          }}
        />
      </Stage>
    </div>
  )
}

快速开始

绘制一个矩形

<Rect x={120} y={10} width={100} height={100} fillStyle="blue" />

Stage 舞台参数

import { Stage, Rect } from 'inula-charts'

function App() {
  return (
    <Stage>
      <Rect x={10} y={10} width={100} height={100} fillStyle="red" />
    </Stage>
  )
}

图形参数

共有参数

interface AbstractUiData {
  name?: string
  x?: number // Line 无此参数
  y?: number // Line 无此参数
  shadowColor?: string
  shadowBlur?: number
  shadowOffsetX?: number
  shadowOffsetY?: number
  lineWidth?: number
  opacity?: number // 透明度
  zIndex?: number // 同级顺序

  fillStyle?: CanvasFillStrokeStyles['fillStyle']
  strokeStyle?: CanvasFillStrokeStyles['strokeStyle']

  lineCap?: CanvasLineCap
  lineJoin?: CanvasLineJoin

  draggable?: boolean | 'horizontal' | 'vertical' // 是否可拖拽 | 只水平方向 | 只垂直方向
  cursor?: ICursor // 鼠标 hover 时的光标样式
}

Rect 矩形,圆角矩形

import { Rect } from 'inula-charts'

function App() {
  return <Rect x={10} y={10} width={100} height={100} fillStyle="red" cornerRadius={4} />
}

Circle 圆形,扇形,扇环

import { Circle } from 'inula-charts'

function App() {
  return (
    <>
      <Circle x={340} y={20} radius={30} fillStyle="green" />
      <Circle x={340} y={20} radius={30} innerRadius={20} fillStyle="pink" />
      <Circle x={340} y={20} radius={30} startAngle={20} endAngle={60} fillStyle="red" />
    </>
  )
}

Line 线段,折线,曲线

interface LineData extends AbstractUiData {
  path2D?: Path2D
  points?: number[] // [x1, y1, x2, y2, x3, y3 ...]
  closed?: boolean
  smooth?: boolean
  percent?: number // 0 - 1
}

function App() {
  return (
    <Stage>
      {/* 线段 */}
      <Line points={[10, 10, 50, 50]} strokeStyle="red" />

      {/* 曲线 */}
      <Line points={[10, 10, 50, 50, 80, 20]} smooth strokeStyle="red" />

      {/* 多边形 */}
      <Line points={[10, 10, 20, 50, 70, 60, 80, 20]} closed fillStyle="pink" strokeStyle="red"></Line>
    </Stage>
  )
}

组 Group(本身不渲染实际的图形,但事件冒泡可以传播到它)

import { Group, Rect } from 'inula-charts'

function App() {
  return (
    <Group>
      <Rect x={120} y={10} width={100} height={100} fillStyle="blue" />
      <Rect x={180} y={10} width={100} height={100} fillStyle="red" />
    </Group>
  )
}

BoxHidden 盒子(渲染实际图形,参数与 Rect 一致)

只会在其内部显示, 超出部分不可见

import { BoxHidden, Circle } from 'inula-charts'

function App() {
  return (
    <BoxHidden x={330} y={10} width={100} height={100} fillStyle="pink">
      <Circle x={340} y={20} radius={30} fillStyle="green" draggable cursor="move" />
    </BoxHidden>
  )
}

rect 只会在 容器 的内部显示,超出部分会隐藏

Text 文字

import { Text } from 'inula-charts'

interface TextData extends AbstractUiData {
  x: number
  y: number
  content: string
  fontSize?: number
  textAlign?: CanvasTextAlign
}

function App() {
  return <Text x={10} y={150} content="hello world"></Text>
}

更新图形

通过 setState 的方式, 即可更新图形并渲染 UI

import { useState } from 'openinula'
import { Stage, Text } from 'inula-charts'

function App() {
  const [x, setX] = useState(10)

  return (
    <div>
      <button onClick={() => setX(100)}>setX</button>

      <Stage>
        <Circle
          x={x}
          y={x}
          radius={20}
          fillStyle="red"
          cursor="pointer"
          animation={{ duration: 300, easing: 'linear' }}
        />
      </Stage>
    </div>
  )
}

拖拽

添加  draggable 属性即可拖拽

import { Stage, Circle } from 'inula-charts'

function App() {
  return (
    <Stage>
      <Circle x={x} y={x} radius={20} fillStyle="red" cursor="move" draggable />
    </Stage>
  )
}

对于 Group 或者 BoxHidden 这种有后代的元素,会找到拾取的图形的最近的 设置了 draggable 属性的图形作为拖拽目标,如果有后代元素,则后代元素跟着一起动。

事件

事件对象 event 格式

其中 dx, dyondrag 事件独有

type EventParameter = {
  target: IShape // 触发该事件的图形元素
  x: number // 鼠标位置 相对于 stage 左上角
  y: number // 鼠标位置 相对于 stage 左上角
  dx?: number // 鼠标的相对偏移量
  dy?: number // 鼠标的相对偏移量
  nativeEvent?: MouseEvent // js原生事件
}
import { Stage, Rect } from 'inula-charts'

function App() {
  const groupClick = evt => {
    console.log('group clicked')
  }

  const rectClick = evt => {
    console.log('rect clicked')
  }

  return (
    <Stage>
      <Group onclick={groupClick}>
        <Rect x={120} y={10} width={100} height={100} fillStyle="blue" onclick={rectClick} />
      </Group>
    </Stage>
  )
}

支持的事件

type EventType = 'mouseleave' | 'mouseenter' | 'mousemove' | 'mousedown' | 'mouseup' | 'click'
  • 支持后代元素的鼠标事件触发, 其行为与 DOM 表现一致
  • 支持事件冒泡, 与 DOM 标准一致

设置了 draggable: true 的图形,额外有 ondragstart ondrag ondragend 事件,可用于自定义拖拽范围

动画

传入 animation 属性, 当重新 setState 的时候, 就可以执行动画

import { Stage, Circle } from 'inula-charts'

function App() {
  const [x, setX] = useState(36)

  return (
    <>
      <button onClick={() => setX(100)}>setX</button>

      <Stage>
        <Circle
          x={x}
          y={x}
          radius={20}
          fillStyle="red"
          cursor="pointer"
          animation={{ duration: 300, easing: 'linear' }}
        />
      </Stage>
    </>
  )
}