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fabric.Canvas.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>JSDoc: Class: Canvas</title>
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<h2><a href="index.html">Home</a></h2><h3>Classes</h3><ul><li><a href="fabric.ActiveSelection.html">ActiveSelection</a></li><li><a href="fabric.BaseBrush.html">BaseBrush</a></li><li><a href="fabric.Canvas.html">Canvas</a></li><li><a href="fabric.Circle.html">Circle</a></li><li><a href="fabric.CircleBrush.html">CircleBrush</a></li><li><a href="fabric.Color.html">Color</a></li><li><a href="fabric.Ellipse.html">Ellipse</a></li><li><a href="fabric.Gradient.html">Gradient</a></li><li><a href="fabric.Group.html">Group</a></li><li><a href="fabric.Image.html">Image</a></li><li><a href="fabric.Image.filters.BaseFilter.html">BaseFilter</a></li><li><a href="fabric.Image.filters.Blur.html">Blur</a></li><li><a href="fabric.Image.filters.Brightness.html">Brightness</a></li><li><a href="fabric.Image.filters.ColorMatrix.html">ColorMatrix</a></li><li><a href="fabric.Image.filters.Contrast.html">Contrast</a></li><li><a href="fabric.Image.filters.Convolute.html">Convolute</a></li><li><a href="fabric.Image.filters.fabric.Image.filter.BlendColor.html">BlendColor</a></li><li><a href="fabric.Image.filters.fabric.Image.filter.BlendImage.html">BlendImage</a></li><li><a href="fabric.Image.filters.Gamma.html">Gamma</a></li><li><a href="fabric.Image.filters.Grayscale.html">Grayscale</a></li><li><a href="fabric.Image.filters.HueRotation.html">HueRotation</a></li><li><a href="fabric.Image.filters.Invert.html">Invert</a></li><li><a href="fabric.Image.filters.Noise.html">Noise</a></li><li><a href="fabric.Image.filters.Pixelate.html">Pixelate</a></li><li><a href="fabric.Image.filters.RemoveColor.html">RemoveColor</a></li><li><a href="fabric.Image.filters.Resize.html">Resize</a></li><li><a href="fabric.Image.filters.Saturation.html">Saturation</a></li><li><a href="fabric.Image.filters.Vibrance.html">Vibrance</a></li><li><a href="fabric.Intersection.html">Intersection</a></li><li><a href="fabric.IText.html">IText</a></li><li><a href="fabric.Line.html">Line</a></li><li><a href="fabric.Object.html">Object</a></li><li><a href="fabric.Path.html">Path</a></li><li><a href="fabric.Pattern.html">Pattern</a></li><li><a href="fabric.PatternBrush.html">PatternBrush</a></li><li><a href="fabric.PencilBrush.html">PencilBrush</a></li><li><a href="fabric.Point.html">Point</a></li><li><a href="fabric.Polygon.html">Polygon</a></li><li><a href="fabric.Polyline.html">Polyline</a></li><li><a href="fabric.Rect.html">Rect</a></li><li><a href="fabric.Shadow.html">Shadow</a></li><li><a href="fabric.SprayBrush.html">SprayBrush</a></li><li><a href="fabric.StaticCanvas.html">StaticCanvas</a></li><li><a href="fabric.Text.html">Text</a></li><li><a href="fabric.Textbox.html">Textbox</a></li><li><a href="fabric.Triangle.html">Triangle</a></li></ul><h3>Namespaces</h3><ul><li><a href="fabric.html">fabric</a></li><li><a href="fabric.Collection.html">Collection</a></li><li><a href="fabric.CommonMethods.html">CommonMethods</a></li><li><a href="fabric.Image.filters.html">filters</a></li><li><a href="fabric.Observable.html">Observable</a></li><li><a href="fabric.util.html">util</a></li><li><a href="fabric.util.array.html">array</a></li><li><a href="fabric.util.ease.html">ease</a></li><li><a href="fabric.util.object.html">object</a></li><li><a href="fabric.util.string.html">string</a></li></ul><h3>Global</h3><ul><li><a href="global.html#__cachedLines">__cachedLines</a></li><li><a href="global.html#_splitTextIntoLines">_splitTextIntoLines</a></li><li><a href="global.html#_wrapLine">_wrapLine</a></li><li><a href="global.html#_wrapText">_wrapText</a></li><li><a href="global.html#applyFilters">applyFilters</a></li><li><a href="global.html#cancelAll">cancelAll</a></li><li><a href="global.html#cancelByCanvas">cancelByCanvas</a></li><li><a href="global.html#cancelByTarget">cancelByTarget</a></li><li><a href="global.html#copyGLTo2DDrawImage">copyGLTo2DDrawImage</a></li><li><a href="global.html#copyGLTo2DPutImageData">copyGLTo2DPutImageData</a></li><li><a href="global.html#dynamicMinWidth">dynamicMinWidth</a></li><li><a href="global.html#findAnimation">findAnimation</a></li><li><a href="global.html#findAnimationIndex">findAnimationIndex</a></li><li><a href="global.html#findAnimationsByTarget">findAnimationsByTarget</a></li><li><a href="global.html#isEmptyStyles">isEmptyStyles</a></li><li><a href="global.html#isEndOfWrapping">isEndOfWrapping</a></li><li><a href="global.html#lockScalingFlip">lockScalingFlip</a></li><li><a href="global.html#minWidth">minWidth</a></li><li><a href="global.html#missingNewlineOffset">missingNewlineOffset</a></li><li><a href="global.html#noScaleCache">noScaleCache</a></li><li><a href="global.html#splitByGrapheme">splitByGrapheme</a></li><li><a href="global.html#styleHas">styleHas</a></li><li><a href="global.html#toObject">toObject</a></li><li><a href="global.html#type">type</a></li></ul>
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<div id="main">
<h1 class="page-title">Class: Canvas</h1>
<section>
<header>
<h2>
<span class="ancestors"><a href="fabric.html">fabric</a>.</span>Canvas</h2>
</header>
<article>
<div class="container-overview">
<h4 class="name" id="Canvas"><a href="#Canvas" ><span class="type-signature"></span>new Canvas<span class="signature">()</span><span class="type-signature"></span></a></h4>
<div class="description">
Canvas class
</div>
<dl class="details">
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="fabric.js.html">fabric.js</a>, <a href="fabric.js.html#line11512">line 11512</a>
</li></ul></dd>
<dt class="tag-tutorial">Tutorials:</dt>
<dd class="tag-tutorial">
<ul>
<li><em class="disabled">Tutorial: <a href="http://fabricjs.com/fabric-intro-part-1#canvas">http://fabricjs.com/fabric-intro-part-1#canvas</a></em></li>
</ul>
</dd>
<dt class="tag-see">See:</dt>
<dd class="tag-see">
<ul>
<li><a href="fabric.Canvas.html#initialize">fabric.Canvas#initialize</a> for constructor definition</li>
</ul>
</dd>
</dl>
<h5>Fires:</h5>
<ul>
<li>object:modified at the end of a transform or any change when statefull is true</li>
<li>object:rotating while an object is being rotated from the control</li>
<li>object:scaling while an object is being scaled by controls</li>
<li>object:moving while an object is being dragged</li>
<li>object:skewing while an object is being skewed from the controls</li>
<li>before:transform before a transform is is started</li>
<li>before:selection:cleared</li>
<li>selection:cleared</li>
<li>selection:updated</li>
<li>selection:created</li>
<li>path:created after a drawing operation ends and the path is added</li>
<li>mouse:down</li>
<li>mouse:move</li>
<li>mouse:up</li>
<li>mouse:down:before on mouse down,event: before the inner fabric logic runs</li>
<li>mouse:move:before on mouse move,event: before the inner fabric logic runs</li>
<li>mouse:up:before on mouse up,event: before the inner fabric logic runs</li>
<li>mouse:over</li>
<li>mouse:out</li>
<li>mouse:dblclick whenever a native dbl click event fires on the canvas.</li>
<li>event:dragover</li>
<li>event:dragenter</li>
<li>event:dragleave</li>
<li>drop:before before drop event. same native event.event: This is added to handle edge cases</li>
<li>event:drop</li>
<li>after:render at the end of the render process,event: receives the context in the callback</li>
<li>before:render at start the render process,event: receives the context in the callback</li>
</ul>
</div>
<h3 class="subsection-title">Extends</h3>
<ul>
<li><a href="fabric.StaticCanvas.html">fabric.StaticCanvas</a></li>
</ul>
<h3 class="subsection-title">Members</h3>
<div class="inherited">
<h4 class="name" id="allowTouchScrolling"><a href="#allowTouchScrolling" ><span class="type-signature"></span>allowTouchScrolling<span class="type-signature"> :Boolean</span></a></h4>
<div class="description">
Indicates whether the browser can be scrolled when using a touchscreen and dragging on the canvas
</div>
<h5>Type:</h5>
<ul>
<li>
<span class="param-type">Boolean</span>
</li>
</ul>
<dl class="details">
<dt class="inherited-from">Inherited From:</dt>
<dd class="inherited-from"><ul class="dummy"><li>
<a href="fabric.StaticCanvas.html#allowTouchScrolling">fabric.StaticCanvas#allowTouchScrolling</a>
</li></ul></dd>
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="fabric.js.html">fabric.js</a>, <a href="fabric.js.html#line8867">line 8867</a>
</li></ul></dd>
</dl>
</div>
<h4 class="name" id="altActionKey"><a href="#altActionKey" ><span class="type-signature"></span>altActionKey<span class="type-signature"> :String</span></a></h4>
<div class="description">
Indicates which key enable alternate action on corner
values: 'altKey', 'shiftKey', 'ctrlKey'.
If `null` or 'none' or any other string that is not a modifier key
feature is disabled feature disabled.
</div>
<h5>Type:</h5>
<ul>
<li>
<span class="param-type">String</span>
</li>
</ul>
<dl class="details">
<dt class="tag-since">Since:</dt>
<dd class="tag-since"><ul class="dummy"><li>1.6.2</li></ul></dd>
<dt class="tag-default">Default Value:</dt>
<dd class="tag-default"><ul class="dummy">
<li>shiftKey</li>
</ul></dd>
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="fabric.js.html">fabric.js</a>, <a href="fabric.js.html#line11629">line 11629</a>
</li></ul></dd>
</dl>
<h4 class="name" id="altSelectionKey"><a href="#altSelectionKey" ><span class="type-signature"></span>altSelectionKey<span class="type-signature"> :null|String</span></a></h4>
<div class="description">
Indicates which key enable alternative selection
in case of target overlapping with active object
values: 'altKey', 'shiftKey', 'ctrlKey'.
For a series of reason that come from the general expectations on how
things should work, this feature works only for preserveObjectStacking true.
If `null` or 'none' or any other string that is not a modifier key
feature is disabled.
</div>
<h5>Type:</h5>
<ul>
<li>
<span class="param-type">null</span>
|
<span class="param-type">String</span>
</li>
</ul>
<dl class="details">
<dt class="tag-since">Since:</dt>
<dd class="tag-since"><ul class="dummy"><li>1.6.5</li></ul></dd>
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="fabric.js.html">fabric.js</a>, <a href="fabric.js.html#line11669">line 11669</a>
</li></ul></dd>
</dl>
<div class="inherited">
<h4 class="name" id="backgroundColor"><a href="#backgroundColor" ><span class="type-signature"></span>backgroundColor<span class="type-signature"> :String|<a href="fabric.Pattern.html">fabric.Pattern</a></span></a></h4>
<div class="description">
Background color of canvas instance.
Should be set via <a href="fabric.StaticCanvas.html#setBackgroundColor">fabric.StaticCanvas#setBackgroundColor</a>.
</div>
<h5>Type:</h5>
<ul>
<li>
<span class="param-type">String</span>
|
<span class="param-type"><a href="fabric.Pattern.html">fabric.Pattern</a></span>
</li>
</ul>
<dl class="details">
<dt class="inherited-from">Inherited From:</dt>
<dd class="inherited-from"><ul class="dummy"><li>
<a href="fabric.StaticCanvas.html#backgroundColor">fabric.StaticCanvas#backgroundColor</a>
</li></ul></dd>
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="fabric.js.html">fabric.js</a>, <a href="fabric.js.html#line8797">line 8797</a>
</li></ul></dd>
</dl>
</div>
<div class="inherited">
<h4 class="name" id="backgroundImage"><a href="#backgroundImage" ><span class="type-signature"></span>backgroundImage<span class="type-signature"> :<a href="fabric.Image.html">fabric.Image</a></span></a></h4>
<div class="description">
Background image of canvas instance.
since 2.4.0 image caching is active, please when putting an image as background, add to the
canvas property a reference to the canvas it is on. Otherwise the image cannot detect the zoom
vale. As an alternative you can disable image objectCaching
</div>
<h5>Type:</h5>
<ul>
<li>
<span class="param-type"><a href="fabric.Image.html">fabric.Image</a></span>
</li>
</ul>
<dl class="details">
<dt class="inherited-from">Inherited From:</dt>
<dd class="inherited-from"><ul class="dummy"><li>
<a href="fabric.StaticCanvas.html#backgroundImage">fabric.StaticCanvas#backgroundImage</a>
</li></ul></dd>
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="fabric.js.html">fabric.js</a>, <a href="fabric.js.html#line8807">line 8807</a>
</li></ul></dd>
</dl>
</div>
<div class="inherited">
<h4 class="name" id="backgroundVpt"><a href="#backgroundVpt" ><span class="type-signature"></span>backgroundVpt<span class="type-signature"> :Boolean</span></a></h4>
<div class="description">
if set to false background image is not affected by viewport transform
</div>
<h5>Type:</h5>
<ul>
<li>
<span class="param-type">Boolean</span>
</li>
</ul>
<dl class="details">
<dt class="tag-since">Since:</dt>
<dd class="tag-since"><ul class="dummy"><li>1.6.3</li></ul></dd>
<dt class="inherited-from">Inherited From:</dt>
<dd class="inherited-from"><ul class="dummy"><li>
<a href="fabric.StaticCanvas.html#backgroundVpt">fabric.StaticCanvas#backgroundVpt</a>
</li></ul></dd>
<dt class="tag-default">Default Value:</dt>
<dd class="tag-default"><ul class="dummy">
<li>true</li>
</ul></dd>
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="fabric.js.html">fabric.js</a>, <a href="fabric.js.html#line8893">line 8893</a>
</li></ul></dd>
</dl>
</div>
<h4 class="name" id="centeredKey"><a href="#centeredKey" ><span class="type-signature"></span>centeredKey<span class="type-signature"> :String</span></a></h4>
<div class="description">
Indicates which key enable centered Transform
values: 'altKey', 'shiftKey', 'ctrlKey'.
If `null` or 'none' or any other string that is not a modifier key
feature is disabled feature disabled.
</div>
<h5>Type:</h5>
<ul>
<li>
<span class="param-type">String</span>
</li>
</ul>
<dl class="details">
<dt class="tag-since">Since:</dt>
<dd class="tag-since"><ul class="dummy"><li>1.6.2</li></ul></dd>
<dt class="tag-default">Default Value:</dt>
<dd class="tag-default"><ul class="dummy">
<li>altKey</li>
</ul></dd>
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="fabric.js.html">fabric.js</a>, <a href="fabric.js.html#line11618">line 11618</a>
</li></ul></dd>
</dl>
<h4 class="name" id="centeredRotation"><a href="#centeredRotation" ><span class="type-signature"></span>centeredRotation<span class="type-signature"> :Boolean</span></a></h4>
<div class="description">
When true, objects use center point as the origin of rotate transformation.
<b>Backwards incompatibility note:</b> This property replaces "centerTransform" (Boolean).
</div>
<h5>Type:</h5>
<ul>
<li>
<span class="param-type">Boolean</span>
</li>
</ul>
<dl class="details">
<dt class="tag-since">Since:</dt>
<dd class="tag-since"><ul class="dummy"><li>1.3.4</li></ul></dd>
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="fabric.js.html">fabric.js</a>, <a href="fabric.js.html#line11607">line 11607</a>
</li></ul></dd>
</dl>
<h4 class="name" id="centeredScaling"><a href="#centeredScaling" ><span class="type-signature"></span>centeredScaling<span class="type-signature"> :Boolean</span></a></h4>
<div class="description">
When true, objects use center point as the origin of scale transformation.
<b>Backwards incompatibility note:</b> This property replaces "centerTransform" (Boolean).
</div>
<h5>Type:</h5>
<ul>
<li>
<span class="param-type">Boolean</span>
</li>
</ul>
<dl class="details">
<dt class="tag-since">Since:</dt>
<dd class="tag-since"><ul class="dummy"><li>1.3.4</li></ul></dd>
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="fabric.js.html">fabric.js</a>, <a href="fabric.js.html#line11598">line 11598</a>
</li></ul></dd>
</dl>
<div class="inherited">
<h4 class="name" id="clipPath"><a href="#clipPath" ><span class="type-signature"></span>clipPath<span class="type-signature"> :<a href="fabric.Object.html">fabric.Object</a></span></a></h4>
<div class="description">
a fabricObject that, without stroke define a clipping area with their shape. filled in black
the clipPath object gets used when the canvas has rendered, and the context is placed in the
top left corner of the canvas.
clipPath will clip away controls, if you do not want this to happen use controlsAboveOverlay = true
</div>
<h5>Type:</h5>