Web Component: j-DrawZone

j-DrawZone

The component can draw a zone (polygon). This component uses OpenLayers library with the OpenStreetMap map engine.

• jComponent v19|v20

Configuration:

• parent {String} a parent element (default: undefined)
• height {Number} a fixed (minimal) height (default: 200)
• color {String} a default color for polygon (default: #fcba03)
• zoom {Number} a default zoom level (default: 11)
• readonly {Boolean} enables readonly mode (default: false)
• stroke {Number} a stroke width (default: 2)
• radius {Number} a radius size of points in the polygon (default: 7)
• center {String} a default map position (default: 48.73702478789267,19.137712002562715)
• opacity {Number} determines the transparency of the polygon in percentage (default: 40)
• required {Boolean} optional (default: false)
• filter {String} optional, CSS filter e.g. filter:grayscale(90%) invert(100%) (default: null)
• NEW: exec {String} optional, a link to the function(value, component) (it will be executed when the value is changed)

Data-source needs to contain:

{
    points: [{ lat: 48.75152530164132, lng: 19.13902142954625 }, { lat: 48.726826662905296, lng: 19.123238694044034 }, ...] // polygon points
    color: '#FD391A', // optional
    zoom: 13 // optional
}

Methods:

• component.clear([draw]) clears the polygon @draw {Boolean} (default: false)
• component.move(lat, lng) moves the map to the specific position
• component.export(opt, callback(base64)) exports data into the picture
  • opt.width {Number} required
  • opt.height {Number} required
  • opt.zoom {Number} (default: 13)
  • opt.type {png|jpg} (default: png)
  • opt.quality {Number} only for JPEG
  • opt.points {Array Number}
  • opt.color {String} (default: config.color)
  • opt.radius {Number} (default: config.radius)
  • opt.opacity {Number} (default: config.opacity)

Output:

• is extended by center { lat: Number, lng: Number } property

Good to know:

• double click on vertices (created point) will delete selected point

Author

• Peter Širka & Dodo Marton info@totaljs.com
• License