1.0.0 • Published 1 year ago

@flexsolver/vue-drawing-canvas v1.0.0

Weekly downloads
-
License
MIT
Repository
-
Last release
1 year ago

VueJS Component for drawing on canvas.

Support for both Vue 3 and Vue 2 + Composition API

Vue 3

Vue 3 Drawing Canvas Demo

Vue 2

Deployed on a nuxt container which have access to terminal

vue-drawing-canvas

Note: If you're using nuxt.js and receive error Object(...) is not a function please refer to this issue

Installation

Install using package manager:

npm install --save-dev vue-drawing-canvas

# or with Vue 2

npm install --save-dev vue-drawing-canvas @vue/composition-api

Then add it to your component files

<!-- MyComponent.vue -->

<template>
  <vue-drawing-canvas ref="VueCanvasDrawing" />
</template>

<script>
  import VueDrawingCanvas from "vue-drawing-canvas";

  export default {
    name: "MyComponent",
    components: {
      VueDrawingCanvas,
    },
  };
</script>

Usage

Props

NameTypeDefault ValueDescription
canvasIdStringVueDrawingCanvasSpecifies your canvas id
widthString, Number600Specifies canvas width
heightString, Number400Specifies canvas height
imageStringYour v-model to get canvas output to an base64 image
strokeTypeString"dash"Specifies stroke type to draw on canvas.Accepted value "dash", "line", "circle", "square", "triangle", "half_triangle"
fillShapeBooleanfalseSpecifies if the shape must be filled with the current fill style
eraserBooleanfalseProps to change state from drawing to erasing
colorString"#000000"Specifies the color, gradient, or pattern to use for the strokes
lineWidthNumber5Sets the thickness of line
lineCapString"round"Determines the shape used to draw the end points of line.Accepted value "round", "square", "butt".Refer to this site for more information.
lineJoinString"miter"determines the shape used to join two line segments where they meet.Accepted value "round", "miter", "square".Refer to this site for more information.
lockBooleanfalseLock canvas for drawing
backgroundColorString"#FFFFFF"Set background color on your canvas
backgroundImageStringSet background image on your canvasBe carefull for performance issue when using this props !!
initialImageArray[]Draw strokes and shapes from canvas you've worked before. Demo
additionalImagesArray[]Accept Array of watermark Object to draw either text or insert multiple image on canvasBe carefull for performance issue when using this props !!
classesArray, String, ObjectSpecifies your own classes to canvas
stylesArray, String, ObjectSpecifies your own styles to canvas
watermarkObjectPut watermark text/image on your image output(see details in the next section below)
saveAsString"png"Specifies output type. This props accept either "png" or "jpeg"
outputWidthNumberthis.widthSpecifies image output width, if undefined then canvas width will be used
outputHeightNumberthis.heightSpecifies image output height, if undefined then canvas height will be used

Watermark Object

{
  // Specifies your watermark type. Type can be either "Text" or "Image"
  //
  // type: String
  // required: true
  // validator: (value) => { return ["Text", "Image"].includes(value) }
  type: "Text",
  // Specifies your watermark source
  // If type is "Text" enter your watermark text here
  // if type if "Image" enter your uploaded file createObjectURL(event.target.files[0]) Work best with .png file
  //
  // type: String
  // required: true
  source: "Watermark",
  // The x-axis coordinate of the point at which to begin drawing the watermark,
  // in pixels
  //
  // type: Number
  // required: true
  x: 200,
  // The y-axis coordinate of the point at which to begin drawing the watermark,
  // in pixels
  //
  // type: Number
  // required: true
  y: 180,
  // Specifies width and height for your watermark image
  //
  // type: Object
  // required: false
  imageStyle: {
    // The width to draw the image in the canvas
    //
    // type: Number
    // required: false
    // default: () => this.width
    width: 600,
    // The height to draw the image in the canvas
    //
    // type: Number
    // required: false
    // default: () => this.height
    height: 400
  },
  // Specifies text style for your watermark
  //
  // type: Object
  // required: false
  fontStyle: {
    // The maximum number of pixels wide the text may be once rendered.
    // If not specified, there is no limit to the width of the text.
    //
    // type: Number
    // required: false
    width: 200,
    // Sets the height of text in pixels. Usually this value has same value with font
    //
    // type: Number
    // required: false
    // default: () => 20
    lineHeight: 48,
    // Specifies the color, gradient, or pattern to use for the text
    //
    // type: String
    // required: false
    // default: () => '#000000'
    color: '#FF0000',
    // Specifies the current text style to use when drawing text.
    // font: '{fontWeight} {fontSize} {fontFamily}'
    //
    // type: String
    // required: false
    // default: () => '20px serif'
    font: 'bold 48px serif',
    // Specifies drawing type to use when drawing text.
    //
    // type: String
    // required: false
    // validator: (value) => { return ["fill", "stroke"].includes(value) }
    // default: () => 'fill'
    drawType: 'fill',
    // Specifies the current text alignment used when drawing text
    // The alignment is relative to the x value
    //
    // type: String
    // required: false
    // validator: (value) => { return ["left", "right", "center", "start", "end"].includes(value) }
    // default: () => 'start'
    textAlign: 'left',
    // Specifies the current text baseline used when drawing text
    //
    // type: String
    // required: false
    // validator: (value) => { return ["top", "hanging", "middle", "alphabetic", "ideographic", "bottom"].includes(value) }
    // default: () => 'alphabetic'
    textBaseline: 'top',
    // The rotation angle, clockwise in radians
    //
    // type: Number
    // required: false
    rotate: 45
  }
}

Methods

Method NameReturn ValueDescription
getCoordinates(event){ x: 0, y: 0 }Get x-axis and y-axis coordinates from current canvas
reset()Reset current canvas to new state
undo()Remove last drawing stroke on current canvas
redo()Re-draw last removed stroke on current canvas
redraw()Redraw all strokes on current canvas
isEmpty()true or falseGet current canvas empty state
getAllStrokes()Array of strokes and shapesGet all strokes and shapes from canvas

Changelog

Read here

License

MIT