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vue-fabric's Introduction

vue-fabric

purestart vue-fabric.

Installation

npm install vue-fabric --save

依赖

下载customiseControls.min.js.和 fabric.min.js.到本地 static/js/文件下

本地项目 index.html 引入

<script type="text/javascript" src="./static/js/fabric.min.js"></script>
<script type="text/javascript" src="./static/js/customiseControls.min.js"></script>

Import

在main.js中
import 'vue-fabric/dist/vue-fabric.min.css';
import { Fabric } from 'vue-fabric';
Vue.use(Fabric);

使用

 <vue-fabric ref="canvas" :width="width" :height="height"></vue-fabric>

Usage

Props

Name Type Default Description
id String "canvas" id
width Number 0 canvas width
height Number 0 canvas height

Function

方法调用 this.$refs.canvas.方法名(params)

createImage(url,options) 绘制图片

params Type Description
url String image url
options Object id(唯一标识该元素,以下每个方法 options 参数都带 id),width,height,left,top,registeObjectEvent (Boolean 是否注册对象事件),evented 是否可被点击选中,selectable 是否禁止被选中...其它属性

createImageByImg(img,options) 绘制图片

params Type Description
img Image对象 new Image对象
options Object id(唯一标识该元素,以下每个方法 options 参数都带 id),width,height,left,top,registeObjectEvent (Boolean 是否注册对象事件),evented 是否可被点击选中,selectable 是否禁止被选中...其它属性

createTextbox(text,options) 绘制文本

params Type Description
text String text content
options Object width,left,top,fill(颜色),fontSize,id,fontFamily,strokeWidth,stroke,textAlign,textBackgroundColor,lineHeight,fontWeight,...其它属性

createItext(text,options) 绘制可编辑文本(可换行显示文本)

params Type Description
text String text content
options Object width,left,top,fill(颜色),fontSize,id,editable(是否可编辑),fontFamily,fontSize,strokeWidth,stroke,textAlign,textBackgroundColor,lineHeight,fontWeight,...其它属性

createRect(options) 绘制矩形

options Type Description
left Number left
top Number top
width Number Rect width
height Number Rect height
fillColor String Rect fillColor
id String 唯一标识 id
其它属性兼容 all 兼容原生其它属性

freeDrawConfig(options) 开启/关闭自由绘制(画笔)

options Type Description
isDrawingMode Boolean 是否开启自由绘制 true/false
color String 绘制线颜色
drawWidth Number 绘制线宽

eraseDrawConfig(options) 开启自由绘制橡皮擦(只对当前绘制画布有效)

options Type Description
color String 选填,擦除颜色默认白色
drawWidth Number 橡皮擦线宽

createLine(options) 绘制直线

options Type Description
x,y,x1,y1 Number line points,直线两点坐标
fillColor String fillColor 填充颜色
strokeColor String strokeColor 绘制颜色
其它属性兼容 all 兼容原生其它属性

drawDottedline(options) 绘制虚线

options Type Description
x,y,x1,y1 Number line points,直线两点坐标
color String 绘制线颜色
drawWidth Number 绘制线宽
offset Number 默认 6,每隔 offset 个像素空 empty 个像素
empty Number 默认 3,每隔 offset 个像素空 empty 个像素
其它属性兼容 all 兼容原生其它属性

drawArrowLine(options) 绘制箭头直线

options Type Description
x,y,x1,y1 Number line points,直线两点坐标
color String 绘制线颜色
drawWidth Number 绘制线宽
fillColor Number 默认透明,填充颜色
theta Number 默认 35,箭头角度大小
headlen Number 默认 35,箭头角度大小
其它属性兼容 all 兼容原生其它属性

createTriangle(options) 绘制三角形

options Type Description
x,y,x1,y1,x2,y2 Number 三角形 3 点坐标位置
left,top Number position 位置
color String 绘制线颜色
fillColor String fillColor 填充颜色
drawWidth Number 绘制线宽
其它属性兼容 all 兼容原生其它属性

createEqualTriangle(options) 绘制等边三角形

options Type Description
left,top Number position 位置
fill String fillColor 填充颜色
width Number 三角形底边宽度
height Number 三角形高
其它属性兼容 all 兼容原生其它属性

drawByPath(pathArray,options) 根据轨迹绘制图形

params Type Description
pathArray Array 轨迹所在点数组,按顺序正时针或逆时针,如三角形 [[50, 50], [120, 120], [80, 160]]
options Object left,top,strokeColor,strokeWidth,fillColor,...其它属性

createCircle(options) 绘制圆

options Type Description
left,top Number position 位置
fill String fillColor 填充颜色
radius Number 圆形半径
其它属性兼容 all 兼容原生其它属性

createEllipse(options) 绘制椭圆

options Type Description
rx,ry Number rx , ry 椭圆两个长轴尺寸和短轴尺寸
left,top Number position 位置
fillColor String fillColor 填充颜色
strokeColor String strokeColor 绘制线颜色
angle Number angle 倾斜角度
其它属性兼容 all 兼容原生其它属性

setRotate(angle) 旋转选中元素

params Type Description
angle Number 旋转角度

setSelection(flag) 设置画布是否可以框选

params Type Description
flag Boolean 画布是否可以框选

setBackgroundImage(options) 设置画布背景图片

options Type Description
imgUrl String 背景图片 Url
angle Number 旋转角度
opacity Number 背景图片透明度
width Number 默认为canvas宽度 背景图片宽度
height Number 默认为canvas高度 背景图片高度
scaleX Number 水平缩放
scaleY Number 垂直缩放
crossOrigin String 可为'anonymous',加载跨域图片

renderAll() 重新渲染画布

setBackgroundColor(color) 设置画布背景颜色

params Type Description
color String 背景颜色

toggleMirror(options) 设置图片元素镜像翻转

options Type Description
flip String 可选值 X,Y 默认值 X , 镜像翻转 X,Y

setCornerIcons(options) 自定义操作元素图片

options Type Description
size Npmber 图片大小 px
borderColor String 图片边框颜色
cornerBackgroundColor String 设置背景颜色
cornerShape String 形状,默认'rect' ,可选'rect', 'circle'
tl String top left 左上角元素图片地址(本地只能 static 下的图片)
tr String top right 右上角元素图片地址(本地只能 static 下的图片)
bl String bottom left 左下角元素图片地址(本地只能 static 下的图片)
br String bottom right 右下角元素图片地址(本地只能 static 下的图片)
ml String middle left 中间左边元素图片地址(本地只能 static 下的图片)
mr String middle right 中间右边元素图片地址(本地只能 static 下的图片)
mtr String middle top 顶部元素图片地址(本地只能 static 下的图片)

toNextLayer() 设置当前选中画布到下一层

toLastLayer() 设置当前选中画布到上一层

toBottomLayer() 设置当前选中画布到底层

toTopLayer() 设置当前选中画布到顶层

discardActive() 取消选中

getObjects() 获取当前画布上的所有元素对象

clear() 清除当前画布上的所有元素对象

toDataUrl() 返回当前画布的 base64 图片

toJson() 返回当前画布的 json 对象

loadFromJSON(json,cb) 从 json 对象中加载画布数据

params Type Description
json Object json 对象
cb Function 加载完成回调函数

toSvg() 返回当前画布的 svg 图片

removeCurrentObj() 删除当前选中对象

getEditObj() 返回当前选中对象,并不在画布上显示,用于编辑当前元素

setEditObj(obj) 设置添加对象到画布

deactivateOne(obj) 取消选中对象(框选的时候选中多个对象使用)

事件

 <vue-fabric ref="canvas" @selection:created="selected" :width="width" :height="height"></vue-fabric>

鼠标事件

name Type Description
mouse:down event mouse down
mouse:up event mouse up
mouse:move event mouse move
mouse:dblclick event mouse dblclick
mouse:over event mouse over
mouse:out event mouse out

其它事件

name Type Description
selection:created event 选中 canvas 元素对象,单选和多选都会触发此事件
selection:updated event selection updated
selection:cleared event selection cleared
before:selection:cleared event before selection cleared
object:added event 当有元素被添加进来时候触发
object:removed event object removed
object:modified event object modified
object:rotating event object rotating
object:scaling event object scaling
object:moving event object moving

Changelog

2018.08.26

v0.1.4 * 初始化组件库

2018.09.20

v0.1.8 * 新增 api 常用接口创建文档

2019.01.19---v0.1.9

  • 新增画板事件,鼠标事件、选中事件等
  • 新增绘制三角形
  • 新增绘制虚线
  • 新增画笔自由绘制
  • 新增绘制箭头
  • 新增取消选中方法

2019.01.31---v0.1.10

  • 修改绘制图片(createImage 方法)不能定位 top 的 BUG
  • 修改镜像翻转函数 toggleMirror ,新增参数 options ,X 翻转和 Y 翻转

2019.05.09---v0.1.20

  • fix webpack-dev-server 版本导致的 npm run dev fail
  • 新增方法 drawByPath 根据轨迹绘制形状图形

2020.03.02---v0.1.26

  • 新增属性id 修复一个页面使用多个vue-fabric没有渲染成功的问题

2020.04.15---v0.1.27

  • 修复id = "canvas"的情况下会报错的问题

2020.05.08---v0.1.28

  • 修复更新Mirror只有图片生效的问题

2020.07.07---v0.1.29

  • 新增优化图片无法被选中属性设置 evented 和 selectable 感谢 @jessieyyy
  • 新增取消单个选中的方法 deactivateOne(obj)
  • 修复image top 和 left 定位bug

2020.07.21---v0.1.37

  • 新增createImageByImg(img, options)方法 其中参数img是Image对象
  • 新增setSelection(flag) 设置画布是否可以框选

vue-fabric's People

Contributors

purestart avatar zackjiang21 avatar

Stargazers

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Watchers

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vue-fabric's Issues

Mirror working only on image objects

Hi.
I noticed that mirror works only if active object is of image type.
This is the code:

toggleMirror ({ flip = 'X' }) {
      let img = this.canvas.getActiveObject();
      // console.log(img);
      if (img && img.type == 'image') {  <<<<<<<<
        if (flip === 'X') {
          img.toggle('flipX');
        } else {
          img.toggle('flipY');
        }
        this.renderAll();
      }
    },

I tried to remove the check about the object type and the mirror works also for other objects.
Is there any reason for this?

Thank you.

npm run dev failed

after git clone,then go to the directory,then npm install,then npm run dev,but failed

安装过程出现了问题

您好,我这边执行了npm install vue-fabric之后会报没有安装ajv@^6.0.0 ,ajv@^5.0.0的依赖,但是我安装了5.0之后会报6.0错误,安装了6.0之后会报5.0的错,进入一个死循环的错误,不知该如何解决,请大佬赐教

createCircle Stroke colour

I am trying to draw a bunch of circles with createCircle, drawing the circles onto the canvas was successful however, the stroke colour isn't correct.

  watch: {
    'project.points': {
      handler: function(curr) {
        const app = this
        app.canvas.forEachObject(obj => app.canvas.remove(obj))

        // Grey Stroke
        app.$refs.canvas.createCircle({
          left: 50,
          top: 50,
          fill: 'red',
          radius: 10,
          stroke: 'blue',
          strokeWidth: 3
        })

        curr.forEach(point => {
          const { x, y } = pointConverter(false, parseInt(point.x), parseInt(point.y))

          // Grey Stroke
          app.$refs.canvas.createCircle({
            id: point.id,
            objType: point.objType,
            hasControls: false,
            fill: app.mapPointsSettings[point.type].fill,
            stroke: app.mapPointsSettings[point.type].stroke,
            strokeWidth: app.mapPointsSettings[point.type].strokeWidth,
            radius: app.mapPointsSettings[point.type].radius,
            pointType: point.type,
            originX: 'center',
            originY: 'center',
            left: x,
            top: y,
            selectabled: false,
            lockMovementX: true,
            lockMovementY: true
          })
        })
      },
      deep: true
    },
  }

All the circles show up with grey colour, I try setting the stroke to blue but that didn't work.

The data for app.mapPointsSettings[point.type]:

export const state = {
  map: {
    threshold: 2,
    dirColour: '#fab1a0',
    z: 0,
    points: {
      reportpoint: {
        fill: '#0984e3',
        stroke: '#0984e3',
        strokeWidth: 2,
        radius: 4
      },
      stoplocation: {
        fill: false,
        stroke: '#0984e3',
        strokeWidth: 2,
        radius: 6
      },
      chargestation: {
        fill: false,
        stroke: '#fdcb6e',
        strokeWidth: 2,
        radius: 9
      }
    }
  }
}

image

Note: app.canvas is this.$refs.canvas.canvas declared during created cycle.

加载速度感觉有些慢啊

我直接写的Canvas绘图,相同量级的rect方形,这个要比canvas慢了1S左右,,需要做什么优化操作么

createRect with stroke?

like this?
const rect = new fabric.Rect({
top: 10,
left: 10,
width: 50,
height: 50,
hasBorder: true,
stroke: 'yellow',
strokeWidth: 3,
fill:'transparent'
});

大佬node-pre-gyp WARN Using request for node-pre-gyp https download gyp ERR! find Python 怎么回事啊

node-pre-gyp WARN Using request for node-pre-gyp https download
gyp ERR! find Python
gyp ERR! find Python Python is not set from command line or npm configuration
gyp ERR! find Python Python is not set from environment variable PYTHON
gyp ERR! find Python checking if "python" can be used
gyp ERR! find Python - "python" is not in PATH or produced an error
gyp ERR! find Python checking if "python2" can be used
gyp ERR! find Python - "python2" is not in PATH or produced an error
gyp ERR! find Python checking if "python3" can be used
gyp ERR! find Python - "python3" is not in PATH or produced an error
gyp ERR! find Python checking if the py launcher can be used to find Python 2
gyp ERR! find Python - "py.exe" is not in PATH or produced an error
gyp ERR! find Python checking if Python is C:\Python27\python.exe
gyp ERR! find Python - "C:\Python27\python.exe" could not be run
gyp ERR! find Python checking if Python is C:\Python37\python.exe
gyp ERR! find Python - "C:\Python37\python.exe" could not be run
gyp ERR! find Python
gyp ERR! find Python **********************************************************
gyp ERR! find Python You need to install the latest version of Python.
gyp ERR! find Python Node-gyp should be able to find and use Python. If not,
gyp ERR! find Python you can try one of the following options:
gyp ERR! find Python - Use the switch --python="C:\Path\To\python.exe"
gyp ERR! find Python (accepted by both node-gyp and npm)
gyp ERR! find Python - Set the environment variable PYTHON
gyp ERR! find Python - Set the npm configuration variable python:
gyp ERR! find Python npm config set python "C:\Path\To\python.exe"
gyp ERR! find Python For more information consult the documentation at:
gyp ERR! find Python https://github.com/nodejs/node-gyp#installation
gyp ERR! find Python **********************************************************

如何编辑图片形变呢?

这个库挺好用的,还有个问题请教下。除了镜像和边框拉长外,图片元素如何编辑形变?

I have a question?

why after I install.my workprogram issues note "Error in mounted hook: "TypeError: Cannot read property 'createTriangle' of undefined"".how can I do for it??

Fantastic!!!

hello blogger! you are such an excellent coder! i read you essay and learned a lot ! i hope you can go on this great project!

setting crossOrigin: 'anonymous'

setting crossOrigin: 'anonymous' to avoid
Failed to execute 'toDataURL' on 'HTMLCanvasElement': Tainted canvases may not be exported.

uniapp中怎么使用vue-fabric

手上有个需求需要在微信小程序中使用动态海报生成,fabricjs好像只能在h5上面跑,搜索资料发现大神你的这个项目,但是我不知道怎么在uniapp中引入,请大神指点一二

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