Class: Contrast

fabric.Image.filters.Contrast

new Contrast()

Contrast filter class
Source:
See:
Example
var filter = new fabric.Image.filters.Contrast({
  contrast: 40
});
object.filters.push(filter);
object.applyFilters(canvas.renderAll.bind(canvas));

Extends

Members

type

Filter type
Overrides:
Default Value:
  • Contrast
Source:

Methods

applyTo(canvasEl)

Applies filter to canvas element
Parameters:
Name Type Description
canvasEl Object Canvas element to apply filter to
Source:

initialize(optionsopt)

Constructor
Parameters:
Name Type Attributes Description
options Object <optional>
Options object
Properties
Name Type Attributes Default Description
contrast Number <optional>
0 Value to contrast the image up (-255...255)
Overrides:
Source:

setOptions(optionsopt)

Sets filter's properties from options
Parameters:
Name Type Attributes Description
options Object <optional>
Options object
Inherited From:
Source:

toJSON() → {Object}

Returns a JSON representation of an instance
Inherited From:
Source:
Returns:
JSON
Type
Object

toObject() → {Object}

Returns object representation of an instance
Overrides:
Source:
Returns:
Object representation of an instance
Type
Object