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fabric.js中文在线API,fabric.js中文文档API大全

Class: Textbox

fabric.Textbox

new Textbox() → {fabric.Textbox}

Textbox class, based on IText, allows the user to resize the text rectangle and wraps lines automatically. Textboxes have their Y scaling locked, the user can only change width. Height is adjusted automatically based on the wrapping of lines. Textbox类，基于IText，允许用户调整文本矩形的大小 自动换行。文本框的Y轴缩放被锁定 用户只能更改宽度。高度自动调整 行换行。
Mixes In:
Source:
See:
Returns:
thisArg
Type
fabric.Textbox

Extends

Members

__charBounds

contains characters bounding boxes 包含字符边界框
Inherited From:
Source:

__corner :number|string|any

keeps the value of the last hovered corner during mouse move. 0 is no corner, or 'mt', 'ml', 'mtr' etc.. It should be private, but there is no harm in using it as a read-only property. 在鼠标移动期间保持最后一个悬停角的值。 0没有角，或者'mt'， 'ml'， 'mtr'等。 它应该是私人的，但把它当作 只读属性。
Type:
  • number | string | any
Inherited From:
Default Value:
  • 0
Source:

_fontSizeMult :Number

Text Line proportion to font Size (in pixels) 文本行与字体大小的比例(以像素为单位)
Type:
  • Number
Inherited From:
Default Value:
  • 1.13
Source:

_measuringContext :CanvasRenderingContext2D

Reference to a context to measure text char or couple of chars the cacheContext of the canvas will be used or a freshly created one if the object is not on canvas once created it will be referenced on fabric._measuringContext to avoid creating a canvas for every text object created. 引用上下文来测量文本字符或几个字符 如果对象不在画布上，则使用画布的cacheContext或新创建的cacheContext 一旦创建，它将在织物上被引用。_measuuringcontext避免为每一个创建画布 创建文本对象。
Type:
  • CanvasRenderingContext2D
Inherited From:
Source:

_styleProperties :Array

Array of properties that define a style unit (of 'styles'). 定义样式单元('styles')的属性数组。
Type:
  • Array
Inherited From:
Default Value:
  • ["stroke","strokeWidth","fill","fontFamily","fontSize","fontWeight","fontStyle","underline","overline","linethrough","deltaY","textBackgroundColor"]
Source:

absolutePositioned :boolean

Meaningful ONLY when the object is used as clipPath. if true, the clipPath will have its top and left relative to canvas, and will not be influenced by the object transform. This will make the clipPath relative to the canvas, but clipping just a particular object. WARNING this is beta, this feature may change or be renamed. since 2.4.0 只有当对象用作clipPath时才有意义。 如果为true，则clipPath的顶部和左侧相对于画布 不受对象变换的影响。这将使clipPath相对 到画布，但是只裁剪一个特定的对象。 警告:这是测试版，此功能可能会更改或重命名。 自从测试盒框
Type:
  • boolean
Inherited From:
Default Value:
  • false
Source:

aCoords

Describe object's corner position in canvas object absolute coordinates properties are tl,tr,bl,br and describe the four main corner. each property is an object with x, y, instance of Fabric.Point. The coordinates depends from this properties: width, height, scaleX, scaleY skewX, skewY, angle, strokeWidth, top, left. Those coordinates are useful to understand where an object is. They get updated with oCoords but they do not need to be updated when zoom or panning change. The coordinates get updated with @method setCoords. You can calculate them without updating with @method calcACoords(); 在画布对象绝对坐标中描述对象的角位置 属性是tl,tr,bl,br和描述四个主要角。 每个属性都是一个对象，有x, y, Fabric.Point的实例。 坐标取决于以下属性:宽度，高度，scaleX, scaleY skewX, skewY, angle, strokeWidth, top, left。 这些坐标对于了解物体的位置很有用。它们会更新 使用ocoord，但是当缩放或平移改变时，它们不需要更新。 坐标通过@method setcoord得到更新。 你可以使用@method calcACoords()计算它们而不需要更新;
Inherited From:
Source:

angle :Number

Angle of rotation of an object (in degrees) 物体的旋转角度(以度为单位)
Type:
  • Number
Inherited From:
Source:

backgroundColor :String

Background color of an object. takes css colors https://www.w3.org/TR/css-color-3/ 对象的背景颜色。 取css颜色https://www.w3.org/TR/css-color-3/
Type:
  • String
Inherited From:
Source:

borderColor :String

Color of controlling borders of an object (when it's active) 控制对象边界的颜色(当它处于活动状态时)
Type:
  • String
Inherited From:
Default Value:
  • rgb(178,204,255)
Source:

borderDashArray :Array

Array specifying dash pattern of an object's borders (hasBorder must be true) 指定对象边界的破折号模式的数组(hasBorder必须为true)
Type:
  • Array
Since:
  • 1.6.2
Inherited From:
Source:

borderOpacityWhenMoving :Number

Opacity of object's controlling borders when object is active and moving 当物体处于活动和移动状态时，物体控制边界的不透明度
Type:
  • Number
Inherited From:
Default Value:
  • 0.4
Source:

borderScaleFactor :Number

Scale factor of object's controlling borders bigger number will make a thicker border border is 1, so this is basically a border thickness since there is no way to change the border itself. 对象控制边界的比例因子 数字越大边框越粗 Border是1，这是边框的厚度 因为没有办法改变边界本身。
Type:
  • Number
Inherited From:
Default Value:
  • 1
Source:

cacheProperties :Array

List of properties to consider when checking if cache needs refresh 检查缓存是否需要刷新时要考虑的属性列表
Type:
  • Array
Inherited From:
Source:

caching :Boolean

Indicates whether internal text char widths can be cached 指示是否可以缓存内部文本字符宽度
Type:
  • Boolean
Inherited From:
Default Value:
  • true
Source:

centeredRotation :Boolean

When true, this object will use center point as the origin of transformation when being rotated via the controls. Backwards incompatibility note: This property replaces "centerTransform" (Boolean). 当为true时，该对象将使用中心点作为转换的原点 当通过控件旋转时。 向后不兼容注意:此属性取代"centerTransform"(布尔值)。
Type:
  • Boolean
Since:
  • 1.3.4
Inherited From:
Default Value:
  • true
Source:

centeredScaling :Boolean

When true, this object will use center point as the origin of transformation when being scaled via the controls. Backwards incompatibility note: This property replaces "centerTransform" (Boolean). 当为true时，该对象将使用中心点作为转换的原点 当通过控件缩放时。 向后不兼容注意:此属性取代"centerTransform"(布尔值)。
Type:
  • Boolean
Since:
  • 1.3.4
Inherited From:
Source:

charSpacing :Number

additional space between characters expressed in thousands of em unit 字符之间的额外空间 以千em单位表示
Type:
  • Number
Inherited From:
Source:

clipPath :fabric.Object

a fabricObject that, without stroke define a clipping area with their shape. filled in black the clipPath object gets used when the object has rendered, and the context is placed in the center of the object cacheCanvas. If you want 0,0 of a clipPath to align with an object center, use clipPath.originX/Y to 'center' 一个没有描边的fabricObject，用它们的形状定义一个裁剪区域。用黑色填充 clipPath对象在对象呈现完毕时使用，并且上下文被放置在中心位置 对象cacheccanvas。 如果您希望clipPath的0,0与对象中心对齐，请使用clipPath。originX/Y到'center'
Type:
Inherited From:
Source:

colorProperties :Array

List of properties to consider for animating colors. 动画颜色时要考虑的属性列表。
Type:
  • Array
Inherited From:
Source:

controls

custom controls interface controls are added by default_controls.js 自定义控件界面 控件由default_controls.js添加
Overrides:
Source:

cornerColor :String

Color of controlling corners of an object (when it's active) 对象控制角的颜色(当它处于活动状态时)
Type:
  • String
Inherited From:
Default Value:
  • rgb(178,204,255)
Source:

cornerDashArray :Array

Array specifying dash pattern of an object's control (hasBorder must be true) 指定对象控件的破折号模式的数组(hasBorder必须为true)
Type:
  • Array
Since:
  • 1.6.2
Inherited From:
Source:

cornerSize :Number

Size of object's controlling corners (in pixels) 对象控制角的大小(以像素为单位)
Type:
  • Number
Inherited From:
Default Value:
  • 13
Source:

cornerStrokeColor :String

Color of controlling corners of an object (when it's active and transparentCorners false) 对象控制角的颜色(当它处于活动状态且为transparentCorners false时)
Type:
  • String
Since:
  • 1.6.2
Inherited From:
Source:

cornerStyle :String

Specify style of control, 'rect' or 'circle' 指定控件样式，“矩形”或“圆形”
Type:
  • String
Since:
  • 1.6.2
Inherited From:
Source:

ctrlKeysMapDown

For functionalities on keyDown + ctrl || cmd 用于键down + ctrl || cmd上的功能
Inherited From:
Source:

ctrlKeysMapUp

For functionalities on keyUp + ctrl || cmd 键up + ctrl || cmd的功能
Inherited From:
Source:

cursorColor :String

Color of text cursor color in editing mode. if not set (default) will take color from the text. if set to a color value that fabric can understand, it will be used instead of the color of the text at the current position. 编辑模式下文本光标的颜色。 如果没有设置(默认)将从文本中获取颜色。 如果设置为织物可以理解的颜色值，它就会 用来代替当前位置文本的颜色。
Type:
  • String
Inherited From:
Source:

cursorDelay :Number

Delay between cursor blink (in ms) 光标闪烁间隔时间(毫秒)
Type:
  • Number
Inherited From:
Default Value:
  • 1000
Source:

cursorDuration :Number

Duration of cursor fadein (in ms) 光标淡出时间(单位:ms)
Type:
  • Number
Inherited From:
Default Value:
  • 600
Source:

cursorWidth :Number

Width of cursor (in px) 光标宽度(单位:px)
Type:
  • Number
Inherited From:
Default Value:
  • 2
Source:

deltaY :Number

Baseline shift, styles only, keep at 0 for the main text object 基线移位，仅样式，主文本对象保持为0
Type:
  • Number
Inherited From:
Source:

direction :String

WARNING: EXPERIMENTAL. NOT SUPPORTED YET determine the direction of the text. This has to be set manually together with textAlign and originX for proper experience. some interesting link for the future https://www.w3.org/International/questions/qa-bidi-unicode-controls 警告:实验。暂不支持 确定文本的方向。 这必须与textAlign和originX一起手动设置 体验。 未来会有一些有趣的联系 https://www.w3.org/International/questions/qa-bidi-unicode-controls
Type:
  • String
Since:
  • 4.5.0
Inherited From:
Default Value:
  • ltr
Source:

dirty :Boolean

When set to `true`, object's cache will be rerendered next render call. since 1.7.0 当设置为“true”时，对象的缓存将在下一次渲染调用中重新渲染。 自从1.7.0
Type:
  • Boolean
Inherited From:
Default Value:
  • true
Source:

editable :Boolean

Indicates whether a text can be edited 指示文本是否可以编辑
Type:
  • Boolean
Inherited From:
Default Value:
  • true
Source:

editingBorderColor :String

Border color of text object while it's in editing mode 文本对象在编辑模式时的边框颜色
Type:
  • String
Inherited From:
Default Value:
  • rgba(102,153,255,0.25)
Source:

evented :Boolean

When set to `false`, an object can not be a target of events. All events propagate through it. Introduced in v1.3.4 当设置为“false”时，对象不能成为事件的目标。所有事件都通过它传播。在v1.3.4中引入
Type:
  • Boolean
Inherited From:
Default Value:
  • true
Source:

excludeFromExport :Boolean

When `true`, object is not exported in OBJECT/JSON 当' true '时，object不会在object /JSON中导出
Type:
  • Boolean
Since:
  • 1.6.3
Inherited From:
Source:

fill :String

Color of object's fill takes css colors https://www.w3.org/TR/css-color-3/ 物体填充的颜色 取css颜色https://www.w3.org/TR/css-color-3/
Type:
  • String
Inherited From:
Default Value:
  • rgb(0,0,0)
Source:

fillRule :String

Fill rule used to fill an object accepted values are nonzero, evenodd Backwards incompatibility note: This property was used for setting globalCompositeOperation until v1.4.12 (use `fabric.Object#globalCompositeOperation` instead) 填充规则，用于填充对象 可接受的值是非零、偶奇 向后不兼容注意:此属性在v1.4.12之前用于设置globalCompositeOperation(使用' fabric. info ')。对象# globalCompositeOperation '而不是)
Type:
  • String
Inherited From:
Default Value:
  • nonzero
Source:

flipX :Boolean

When true, an object is rendered as flipped horizontally 当为true时，对象呈现为水平翻转
Type:
  • Boolean
Inherited From:
Source:

flipY :Boolean

When true, an object is rendered as flipped vertically 当为true时，对象呈现为垂直翻转
Type:
  • Boolean
Inherited From:
Source:

fontFamily :String

Font family 字体
Type:
  • String
Inherited From:
Default Value:
  • Times New Roman
Source:

fontSize :Number

Font size (in pixels) 字体大小(像素)
Type:
  • Number
Inherited From:
Default Value:
  • 40
Source:

fontStyle :String

Font style . Possible values: "", "normal", "italic" or "oblique". 字体样式。取值为“normal”、“italic”或“斜向”。
Type:
  • String
Inherited From:
Default Value:
  • normal
Source:

fontWeight :Number|String

Font weight (e.g. bold, normal, 400, 600, 800) 字体粗细(如粗体、正常、400、600、800)
Type:
  • Number | String
Inherited From:
Default Value:
  • normal
Source:

globalCompositeOperation :String

Composite rule used for canvas globalCompositeOperation 用于画布的复合规则
Type:
  • String
Inherited From:
Default Value:
  • source-over
Source:

hasBorders :Boolean

When set to `false`, object's controlling borders are not rendered 当设置为“false”时，不渲染对象的控制边界
Type:
  • Boolean
Inherited From:
Default Value:
  • true
Source:

hasControls :Boolean

When set to `false`, object's controls are not displayed and can not be used to manipulate object 当设置为' false '时，对象的控件不显示，并且不能用于操作对象
Type:
  • Boolean
Inherited From:
Default Value:
  • true
Source:

height :Number

Object height 对象的高度
Type:
  • Number
Inherited From:
Source:

hiddenTextareaContainer :HTMLElement

DOM container to append the hiddenTextarea. An alternative to attaching to the document.body. Useful to reduce laggish redraw of the full document.body tree and also with modals event capturing that won't let the textarea take focus. DOM容器来附加hiddenTextarea。 附加到document.body的替代方法。 有助于减少整个文档的延迟重绘。主体树和 还有情态事件捕捉，它不会让文本区聚焦。
Type:
  • HTMLElement
Inherited From:
Source:

hoverCursor :String

Default cursor value used when hovering over this object on canvas 当鼠标悬停在画布上的对象上时使用的默认光标值
Type:
  • String
Inherited From:
Source:

includeDefaultValues :Boolean

When `false`, default object's values are not included in its serialization 当' false '时，默认对象的值不包含在其序列化中
Type:
  • Boolean
Inherited From:
Default Value:
  • true
Source:

inCompositionMode

Helps determining when the text is in composition, so that the cursor rendering is altered. 帮助确定文本何时处于合成状态，以便光标 渲染被改变了。
Inherited From:
Source:

inverted :boolean

Meaningful ONLY when the object is used as clipPath. if true, the clipPath will make the object clip to the outside of the clipPath since 2.4.0 只有当对象用作clipPath时才有意义。 如果为true，则该clipPath将使对象剪辑到clipPath的外部 自从测试盒框
Type:
  • boolean
Inherited From:
Default Value:
  • false
Source:

isEditing :Boolean

Indicates whether text is in editing mode 指示文本是否处于编辑模式
Type:
  • Boolean
Inherited From:
Source:

keysMap

For functionalities on keyDown Map a special key to a function of the instance/prototype If you need different behaviour for ESC or TAB or arrows, you have to change this map setting the name of a function that you build on the fabric.Itext or your prototype. the map change will affect all Instances unless you need for only some text Instances in that case you have to clone this object and assign your Instance. this.keysMap = fabric.util.object.clone(this.keysMap); The function must be in fabric.Itext.prototype.myFunction And will receive event as args[0] 键下的功能 将一个特殊的键映射到实例/原型的一个函数 如果您需要ESC或TAB或箭头的不同行为，则必须更改 这个映射设置了在fabric上构建的函数的名称。Itext或 你的原型。 地图的改变将影响所有的实例，除非你只需要一些文本实例 在这种情况下，你必须克隆这个对象并分配你的实例。 这一点。keysMap = fabric.util.object.clone(this.keysMap); 该函数必须在fabric. txt .prototype. myfunction中，并将作为参数接收事件[0]
Inherited From:
Source:

left :Number

Left position of an object. Note that by default it's relative to object left. You can change this by setting originX={left/center/right} 对象的左侧位置。注意，默认情况下它是相对于左对象的。你可以通过设置originX={left/center/right}来改变它
Type:
  • Number
Inherited From:
Source:

lineCoords

Describe object's corner position in canvas element coordinates. includes padding. Used of object detection. set and refreshed with setCoords. 在画布元素坐标中描述对象的角位置。 包括填充。用于对象检测。 设置并使用setcoord刷新。
Inherited From:
Source:

lineHeight :Number

Line height 行高
Type:
  • Number
Inherited From:
Default Value:
  • 1.16
Source:

linethrough :Boolean

Text decoration linethrough. 文本装饰线条。
Type:
  • Boolean
Inherited From:
Source:

lockMovementX :Boolean

When `true`, object horizontal movement is locked 当为true时，对象水平移动被锁定
Type:
  • Boolean
Inherited From:
Source:

lockMovementY :Boolean

When `true`, object vertical movement is locked 当为true时，对象的垂直移动被锁定
Type:
  • Boolean
Inherited From:
Source:

lockRotation :Boolean

When `true`, object rotation is locked 当为true时，对象旋转被锁定
Type:
  • Boolean
Inherited From:
Source:

lockScalingFlip :Boolean

When `true`, object cannot be flipped by scaling into negative values 当为true时，对象不能通过缩放为负值来翻转
Type:
  • Boolean
Inherited From:
Source:

lockScalingX :Boolean

When `true`, object horizontal scaling is locked 当为true时，对象水平缩放被锁定
Type:
  • Boolean
Inherited From:
Source:

lockScalingY :Boolean

When `true`, object vertical scaling is locked 当为true时，对象垂直缩放被锁定
Type:
  • Boolean
Inherited From:
Source:

lockSkewingX :Boolean

When `true`, object horizontal skewing is locked 当为true时，对象水平倾斜被锁定
Type:
  • Boolean
Inherited From:
Source:

lockSkewingY :Boolean

When `true`, object vertical skewing is locked 当为true时，对象垂直倾斜被锁定
Type:
  • Boolean
Inherited From:
Source:

matrixCache

storage for object full transform matrix 存储对象的完整变换矩阵
Inherited From:
Source:

MIN_TEXT_WIDTH :Number

contains the min text width to avoid getting 0 包含最小文本宽度，以避免得到0
Type:
  • Number
Inherited From:
Default Value:
  • 2
Source:

minScaleLimit :Number

Minimum allowed scale value of an object 对象的最小允许缩放值
Type:
  • Number
Inherited From:
Source:

moveCursor :String

Default cursor value used when moving this object on canvas 在画布上移动此对象时使用的默认游标值
Type:
  • String
Inherited From:
Source:

noScaleCache :Boolean

When `true`, cache does not get updated during scaling. The picture will get blocky if scaled too much and will be redrawn with correct details at the end of scaling. this setting is performance and application dependant. default to true since 1.7.0 当为true时，缓存在扩展期间不会更新。如果缩放，这幅画会变得块状 太多，将在缩放结束时用正确的细节重新绘制。 此设置依赖于性能和应用程序。 默认为true 自从1.7.0
Type:
  • Boolean
Inherited From:
Default Value:
  • true
Source:

objectCaching :Boolean

When `true`, object is cached on an additional canvas. When `false`, object is not cached unless necessary ( clipPath ) default to true 当为true时，对象被缓存在另一个画布上。 当' false '时，对象不缓存，除非必要(clipPath) 默认为true
Type:
  • Boolean
Since:
  • 1.7.0
Inherited From:
Default Value:
  • true
Source:

oCoords

Describe object's corner position in canvas element coordinates. properties are depending on control keys and padding the main controls. each property is an object with x, y and corner. The `corner` property contains in a similar manner the 4 points of the interactive area of the corner. The coordinates depends from the controls positionHandler and are used to draw and locate controls 在画布元素坐标中描述对象的角位置。 属性依赖于控制键和填充主控件。 每个属性都是一个具有x, y和角的对象。 ' corner '属性以类似的方式包含 角落的互动区域。 坐标依赖于控件positionHandler并被使用 绘制和定位控件
Inherited From:
Source:

opacity :Number

Opacity of an object 对象的不透明度
Type:
  • Number
Inherited From:
Default Value:
  • 1
Source:

originX :String

Horizontal origin of transformation of an object (one of "left", "right", "center") See http://jsfiddle.net/1ow02gea/244/ on how originX/originY affect objects in groups 对象转换的水平原点(“左”、“右”、“中”之一) 请参阅http://jsfiddle.net/1ow02gea/244/了解originX/originY如何影响组中的对象
Type:
  • String
Inherited From:
Default Value:
  • left
Source:

originY :String

Vertical origin of transformation of an object (one of "top", "bottom", "center") See http://jsfiddle.net/1ow02gea/244/ on how originX/originY affect objects in groups 对象变换的垂直原点(“顶”、“底”、“中”之一) 请参阅http://jsfiddle.net/1ow02gea/244/了解originX/originY如何影响组中的对象
Type:
  • String
Inherited From:
Default Value:
  • top
Source:

overline :Boolean

Text decoration overline. 文字装饰线。
Type:
  • Boolean
Inherited From:
Source:

ownMatrixCache

storage for object transform matrix 存储对象变换矩阵
Inherited From:
Source:

padding :Number

Padding between object and its controlling borders (in pixels) 对象与其控制边界之间的填充(以像素为单位)
Type:
  • Number
Inherited From:
Source:

paintFirst :String

Determines if the fill or the stroke is drawn first (one of "fill" or "stroke") 确定是先绘制填充还是描边("fill"或"stroke"中的一个)
Type:
  • String
Inherited From:
Default Value:
  • fill
Source:

path :fabric.Path

fabric.Path that the text should follow. since 4.6.0 the path will be drawn automatically. if you want to make the path visible, give it a stroke and strokeWidth or fill value if you want it to be hidden, assign visible = false to the path. This feature is in BETA, and SVG import/export is not yet supported. 织物。文本应该遵循的路径。 从4.6.0开始，路径将自动绘制。 如果你想让路径可见，给它一个stroke和strokeWidth或fill值 如果你想隐藏它，给路径指定visible = false。 该特性还处于BETA阶段，目前还不支持SVG导入/导出。
Type:
Inherited From:
Source:
Example
var textPath = new fabric.Text('Text on a path', {
    top: 150,
    left: 150,
    textAlign: 'center',
    charSpacing: -50,
    path: new fabric.Path('M 0 0 C 50 -100 150 -100 200 0', {
        strokeWidth: 1,
        visible: false
    }),
    pathSide: 'left',
    pathStartOffset: 0
});

pathAlign :String

How text is aligned to the path. This property determines the perpendicular position of each character relative to the path. (one of "baseline", "center", "ascender", "descender") This feature is in BETA, and its behavior may change 文本如何与路径对齐。这个属性决定了 每个字符相对于路径的垂直位置。 (“基线”、“中心”、“上升点”、“下降点”之一) 此功能处于BETA测试阶段，其行为可能会发生变化
Type:
  • String
Inherited From:
Default Value:
  • baseline
Source:

pathSide :String

Which side of the path the text should be drawn on. Only used when text has a path 文本应该绘制在路径的哪一边。 仅当文本有路径时使用
Type:
  • String
Inherited From:
Default Value:
  • left
Source:

pathStartOffset :Number

Offset amount for text path starting position Only used when text has a path 文本路径起始位置的偏移量 仅当文本有路径时使用
Type:
  • Number
Inherited From:
Source:

perPixelTargetFind :Boolean

When set to `true`, objects are "found" on canvas on per-pixel basis rather than according to bounding box 当设置为“true”时，对象是按像素在画布上“找到”的，而不是根据边界框
Type:
  • Boolean
Inherited From:
Source:

scaleX :Number

Object scale factor (horizontal) 物体比例因子(水平)
Type:
  • Number
Inherited From:
Default Value:
  • 1
Source:

scaleY :Number

Object scale factor (vertical) 物体比例因子(垂直)
Type:
  • Number
Inherited From:
Default Value:
  • 1
Source:

selectable :Boolean

When set to `false`, an object can not be selected for modification (using either point-click-based or group-based selection). But events still fire on it. 当设置为“false”时，不能选择对象进行修改(使用基于点点击或基于组的选择)。 但事件仍在发生。
Type:
  • Boolean
Inherited From:
Default Value:
  • true
Source:

selectionBackgroundColor :String

Selection Background color of an object. colored layer behind the object when it is active. does not mix good with globalCompositeOperation methods. 选择对象的背景颜色。当对象处于活动状态时，它后面的彩色图层。 不能很好地与globalCompositeOperation方法混合使用。
Type:
  • String
Inherited From:
Source:

selectionColor :String

Color of text selection 文本选择的颜色
Type:
  • String
Inherited From:
Default Value:
  • rgba(17,119,255,0.3)
Source:

selectionEnd :Number

Index where text selection ends 文本选择结束的索引
Type:
  • Number
Inherited From:
Source:

selectionStart :Number

Index where text selection starts (or where cursor is when there is no selection) 索引文本选择开始的位置(或者没有选择时光标所在的位置)
Type:
  • Number
Inherited From:
Source:

shadow :fabric.Shadow

Shadow object representing shadow of this shape. Backwards incompatibility note: This property was named "textShadow" (String) until v1.2.11 表示此形状的阴影的阴影对象。 向后不兼容注意:此属性在v1.2.11之前被命名为"textShadow" (String)
Type:
Inherited From:
Source:

skewX :Number

Angle of skew on x axes of an object (in degrees) 物体在x轴上的倾斜角(以度为单位)
Type:
  • Number
Inherited From:
Source:

skewY :Number

Angle of skew on y axes of an object (in degrees) 物体y轴上的倾斜角(以度为单位)
Type:
  • Number
Inherited From:
Source:

statefullCache :Boolean

When `true`, object properties are checked for cache invalidation. In some particular situation you may want this to be disabled ( spray brush, very big, groups) or if your application does not allow you to modify properties for groups child you want to disable it for groups. default to false since 1.7.0 当' true '时，将检查对象属性是否缓存无效。在某些方面 您可能希望禁用此功能的情况(喷雾刷，非常大，组) 或者如果您的应用程序不允许您修改您想要的组子的属性 为组禁用它。 默认为false 自从1.7.0
Type:
  • Boolean
Inherited From:
Default Value:
  • false
Source:

stateProperties :Array

List of properties to consider when checking if state of an object is changed (fabric.Object#hasStateChanged) as well as for history (undo/redo) purposes 检查时要考虑的属性列表 对象的状态被改变(fabric. object# hasstatechange) 以及用于历史(撤销/重做)目的
Type:
  • Array
Inherited From:
Source:

stroke :String

When defined, an object is rendered via stroke and this property specifies its color. Backwards incompatibility note: This property was named "strokeStyle" until v1.1.6 定义后，对象通过描边呈现，此属性指定其颜色。 向后不兼容注意:这个属性在v1.1.6之前被命名为“strokeStyle”
Type:
  • String
Inherited From:
Source:

strokeDashArray :Array

Array specifying dash pattern of an object's stroke (stroke must be defined) 指定对象笔画的破折号模式的数组(必须定义笔画)
Type:
  • Array
Inherited From:
Source:

strokeDashOffset :Number

Line offset of an object's stroke 对象笔画的线偏移量
Type:
  • Number
Inherited From:
Source:

strokeLineCap :String

Line endings style of an object's stroke (one of "butt", "round", "square") 对象笔画的行尾样式(“尾”、“圆”、“方”之一)
Type:
  • String
Inherited From:
Default Value:
  • butt
Source:

strokeLineJoin :String

Corner style of an object's stroke (one of "bevel", "round", "miter") 对象描边的角样式("bevel"， "round"， "miter"之一)
Type:
  • String
Inherited From:
Default Value:
  • miter
Source:

strokeMiterLimit :Number

Maximum miter length (used for strokeLineJoin = "miter") of an object's stroke 对象笔画的最大斜接长度(用于strokeLineJoin = "斜接")
Type:
  • Number
Inherited From:
Default Value:
  • 4
Source:

strokeUniform :Boolean

When `false`, the stoke width will scale with the object. When `true`, the stroke will always match the exact pixel size entered for stroke width. this Property does not work on Text classes or drawing call that uses strokeText,fillText methods default to false 当为“false”时，斯托克宽度将随对象缩放。 当为true时，笔画将始终与输入笔画宽度的精确像素大小相匹配。 此属性不适用于使用strokeText,fillText方法的文本类或绘图调用 默认为false
Type:
  • Boolean
Since:
  • 2.6.0
Inherited From:
Default Value:
  • false
Source:

strokeWidth :Number

Width of a stroke used to render this object 用于渲染此对象的描边宽度
Type:
  • Number
Inherited From:
Default Value:
  • 1
Source:

styles :Object

Object containing character styles - top-level properties -> line numbers, 2nd-level properties - character numbers 对象包含字符样式-顶级属性->行号， 第二级属性-字符数
Type:
  • Object
Inherited From:
Source:

subscript :Object

Subscript schema object (minimum overlap) 下标模式对象(最小重叠)
Type:
  • Object
Inherited From:
Default Value:
  • {"size":0.6,"baseline":0.11}
Source:

superscript :Object

Superscript schema object (minimum overlap) 上标模式对象(最小重叠)
Type:
  • Object
Inherited From:
Default Value:
  • {"size":0.6,"baseline":""}
Source:

textAlign :String

Text alignment. Possible values: "left", "center", "right", "justify", "justify-left", "justify-center" or "justify-right". 文本对齐。取值范围:left, center, right, justify， "justify-left"， "justify-center"或"justify-right"。
Type:
  • String
Inherited From:
Default Value:
  • left
Source:

textBackgroundColor :String

Background color of text lines 文本行的背景颜色
Type:
  • String
Inherited From:
Source:

top :Number

Top position of an object. Note that by default it's relative to object top. You can change this by setting originY={top/center/bottom} 对象的顶部位置。注意，默认情况下它是相对于对象top的。你可以通过设置originY={top/center/bottom}来改变它
Type:
  • Number
Inherited From:
Source:

touchCornerSize :Number

Size of object's controlling corners when touch interaction is detected 当检测到触摸交互时，对象控制角的大小
Type:
  • Number
Inherited From:
Default Value:
  • 24
Source:

transparentCorners :Boolean

When true, object's controlling corners are rendered as transparent inside (i.e. stroke instead of fill) 当为true时，对象的控制角被渲染为透明的内部(即描边而不是填充)
Type:
  • Boolean
Inherited From:
Default Value:
  • true
Source:

type :String

Type of an object 对象的类型
Type:
  • String
Inherited From:
Default Value:
  • i-text
Source:

underline :Boolean

Text decoration underline. 文本装饰下划线。
Type:
  • Boolean
Inherited From:
Source:

visible :Boolean

When set to `false`, an object is not rendered on canvas 当设置为“false”时，对象不会在画布上渲染
Type:
  • Boolean
Inherited From:
Default Value:
  • true
Source:

width :Number

Object width 对象的宽度
Type:
  • Number
Inherited From:
Source:

Methods

(static) fromObject(object, callbackopt)

Returns fabric.Textbox instance from an object representation 返回织物。对象表示的文本框实例
Parameters:
Name Type Attributes Description
object Object Object to create an instance from对象以从中创建实例
callback function <optional>
 Callback to invoke when an fabric.Textbox instance is created回调时调用的结构。创建文本框实例
Source:

_calcRotateMatrix() → {Array}

calculate rotation matrix of an object 计算对象的旋转矩阵
Inherited From:
Source:
Returns:
rotation matrix for the object
Type
Array

_calcTranslateMatrix() → {Array}

calculate the translation matrix for an object transform 计算对象变换的平移矩阵
Inherited From:
Source:
Returns:
rotation matrix for the object
Type
Array

_drawClipPath(ctx, clipPath)

Prepare clipPath state and cache and draw it on instance's cache 准备clipPath状态和缓存，并在实例的缓存上绘制它
Parameters:
Name Type Description
ctx CanvasRenderingContext2D
clipPath fabric.Object
Inherited From:
Source:

_getCoords(absolute) → {Object}

return correct set of coordinates for intersection this will return either aCoords or lineCoords. 返回交点的正确坐标集 这将返回acoord或linecoord。
Parameters:
Name Type Description
absolute Boolean will return aCoords if true or lineCoords如果为true或lineCoords
Inherited From:
Source:
Returns:
{tl, tr, br, bl} points
Type
Object

_getFontDeclaration(styleObjectopt) → {String}

return font declaration string for canvas context 返回画布上下文的字体声明字符串
Parameters:
Name Type Attributes Description
styleObject Object <optional>
 object对象
Inherited From:
Source:
Returns:
font declaration formatted for canvas context.
Type
String

_getSelectionForOffset(e, isRight) → {Number}

private Helps finding if the offset should be counted from Start or End 私人 帮助查找是否应该从开始或结束计算偏移量
Parameters:
Name Type Description
e Event Event object事件对象
isRight Boolean
Inherited From:
Source:
Returns:
Type
Number

_getStyleDeclaration(lineIndex, charIndex) → {Object}

get the reference, not a clone, of the style object for a given character 获取给定字符的样式对象的引用，而不是克隆
Parameters:
Name Type Description
lineIndex Number
charIndex Number
Inherited From:
Source:
Returns:
style object
Type
Object

_limitCacheSize(dims) → {Object|Object|Object|Object}

Limit the cache dimensions so that X * Y do not cross fabric.perfLimitSizeTotal and each side do not cross fabric.cacheSideLimit those numbers are configurable so that you can get as much detail as you want making bargain with performances. 限制缓存尺寸，使X * Y不跨越fabric.perfLimitSizeTotal 并且每条边都不跨越fabric.cacheSideLimit 这些数字是可配置的，因此您可以获得尽可能多的细节 与演出讨价还价。
Parameters:
Name Type Description
dims Object
Properties
Name Type Description
width Object width of canvas帆布宽度
height Object height of canvas帆布高度
zoomX Object zoomX zoom value to unscale the canvas before drawing cachezoomX缩放值用于在绘制缓存之前取消画布的缩放
zoomY Object zoomY zoom value to unscale the canvas before drawing cache缩放值用于在绘制缓存之前取消画布的缩放
属性 名字 类型 描述 宽度 对象 帆布宽度 高度 对象 帆布高度 zoomX 对象 zoomX缩放值用于在绘制缓存之前取消画布的缩放 利用促镜拍摄的 对象 缩放值用于在绘制缓存之前取消画布的缩放
Inherited From:
Source:
Returns:
  • .width width of canvas
    Type
    Object
  • .height height of canvas
    Type
    Object
  • .zoomX zoomX zoom value to unscale the canvas before drawing cache
    Type
    Object
  • .zoomY zoomY zoom value to unscale the canvas before drawing cache
    Type
    Object

_measureLine(lineIndex) → {Object|Object}

measure every grapheme of a line, populating __charBounds 测量一行的每个字素，填充__charBounds
Parameters:
Name Type Description
lineIndex Number
Inherited From:
Source:
Returns:
  • object.width total width of characters
    Type
    Object
  • object.widthOfSpaces length of chars that match this._reSpacesAndTabs
    Type
    Object

_mouseDownHandler()

Default event handler for the basic functionalities needed on _mouseDown can be overridden to do something different. Scope of this implementation is: find the click position, set selectionStart find selectionEnd, initialize the drawing of either cursor or selection area initializing a mousedDown on a text area will cancel fabricjs knowledge of current compositionMode. It will be set to false. _mouseDown所需基本功能的默认事件处理程序 可以被重写以执行不同的操作。 此实现的范围是:查找点击位置，设置selectionStart 找到selectionEnd，初始化光标或选择区域的绘制 在文本区域初始化鼠标按下将取消织物的知识 当前compositionMode。它将被设置为false。
Inherited From:
Source:

_mouseDownHandlerBefore()

Default event handler for the basic functionalities needed on mousedown:before can be overridden to do something different. Scope of this implementation is: verify the object is already selected when mousing down mousedown:before所需基本功能的默认事件处理程序 可以被重写以执行不同的操作。 这个实现的作用域是:当鼠标向下移动时，验证对象是否已经被选中
Inherited From:
Source:

_moveCursorLeftOrRight(direction, e)

Moves cursor right or Left, fires event 向左或向右移动光标，触发事件
Parameters:
Name Type Description
direction String 'Left', 'Right'“左”、“右”
e Event Event object事件对象
Inherited From:
Source:

_moveCursorUpOrDown(direction, e)

Moves cursor up or down, fires the events 向上或向下移动光标，触发事件
Parameters:
Name Type Description
direction String 'Up' or 'Down'“上”或“下”
e Event Event object事件对象
Inherited From:
Source:

_removeCacheCanvas()

Remove cacheCanvas and its dimensions from the objects 从对象中移除cacheccanvas及其维度
Inherited From:
Source:

_renderControls(ctx, styleOverrideopt)

Renders controls and borders for the object the context here is not transformed 渲染对象的控件和边框 这里的上下文没有被转换
Parameters:
Name Type Attributes Description
ctx CanvasRenderingContext2D Context to render on要渲染的上下文
styleOverride Object <optional>
 properties to override the object style属性来覆盖对象样式
Inherited From:
Source:

_setupCompositeOperation(ctx)

Sets canvas globalCompositeOperation for specific object custom composition operation for the particular object can be specified using globalCompositeOperation property 为特定对象设置画布globalCompositeOperation 可以使用globalCompositeOperation属性指定特定对象的自定义组合操作
Parameters:
Name Type Description
ctx CanvasRenderingContext2D Rendering canvas context渲染画布上下文
Inherited From:
Source:

_splitTextIntoLines(text) → {Array}

Returns the text as an array of lines. 将文本作为行数组返回。
Parameters:
Name Type Description
text String text to split要分割的文本
Inherited From:
Source:
Returns:
Lines in the text
Type
Array

_toSVG(reviveropt) → {String}

Returns SVG representation of an instance 返回实例的SVG表示形式
Parameters:
Name Type Attributes Description
reviver function <optional>
 Method for further parsing of svg representation.进一步解析svg表示的方法。
Inherited From:
Source:
Returns:
svg representation of an instance
Type
String

abortCursorAnimation()

Aborts cursor animation and clears all timeouts 中止光标动画并清除所有超时
Inherited From:
Source:

adjustPosition(to)

Parameters:
Name Type Description
to String One of 'left', 'center', 'right'左，中，右中的一个
Inherited From:
Source:

animate(property, value) → {fabric.Object|fabric.AnimationContext|Array.<fabric.AnimationContext>}

Animates object's properties 动画对象的属性
Parameters:
Name Type Description
property String | Object Property to animate (if string) or properties to animate (if object)动画属性(if string)或动画属性(if object)
value Number | Object Value to animate property to (if string was given first) or options object动画属性的值(如果先给出字符串)或选项对象
Inherited From:
Source:
Tutorials:
Returns:
  • thisArg
    Type
    fabric.Object
  • animation context (or an array if passed multiple properties) As object — multiple properties object.animate({ left: ..., top: ... }); object.animate({ left: ..., top: ... }, { duration: ... }); As string — one property object.animate('left', ...); object.animate('left', { duration: ... });
    Type
    fabric.AnimationContext | Array.<fabric.AnimationContext>

bringForward(intersectingopt) → {fabric.Object}

Moves an object up in stack of drawn objects 在绘制的对象堆栈中向上移动一个对象
Parameters:
Name Type Attributes Description
intersecting Boolean <optional>
 If `true`, send object in front of next upper intersecting object如果' true '，则将对象发送到下一个上部相交对象的前面
Inherited From:
Source:
Returns:
thisArg
Type
fabric.Object

bringToFront() → {fabric.Object}

Moves an object to the top of the stack of drawn objects 将一个对象移动到绘制对象堆栈的顶部
Inherited From:
Source:
Returns:
thisArg
Type
fabric.Object

calcOwnMatrix() → {Array}

calculate transform matrix that represents the current transformations from the object's properties, this matrix does not include the group transformation 计算表示从的当前变换的变换矩阵 对象的属性，这个矩阵不包括群变换
Inherited From:
Source:
Returns:
transform matrix for the object
Type
Array

calcTextHeight()

Calculate text box height 计算文本框高度
Inherited From:
Source:

calcTransformMatrix(skipGroupopt) → {Array}

calculate transform matrix that represents the current transformations from the object's properties. 计算表示从的当前变换的变换矩阵 对象的属性。
Parameters:
Name Type Attributes Description
skipGroup Boolean <optional>
 return transform matrix for object not counting parent transformations There are some situation in which this is useful to avoid the fake rotation.返回对象的变换矩阵，不包括父变换 在某些情况下，这有助于避免假旋转。
Inherited From:
Source:
Returns:
transform matrix for the object
Type
Array

center() → {fabric.Object}

Centers object vertically and horizontally on canvas to which is was added last You might need to call `setCoords` on an object after centering, to update controls area. 对象在最后添加到的画布上垂直和水平居中 你可能需要在定心之后在一个对象上调用setcoord来更新控件区域。
Inherited From:
Source:
Returns:
thisArg
Type
fabric.Object

centerH() → {fabric.Object}

Centers object horizontally on canvas to which it was added last. You might need to call `setCoords` on an object after centering, to update controls area. 将对象水平居中于最后添加到的画布上。 你可能需要在定心之后在一个对象上调用setcoord来更新控件区域。
Inherited From:
Source:
Returns:
thisArg
Type
fabric.Object

centerV() → {fabric.Object}

Centers object vertically on canvas to which it was added last. You might need to call `setCoords` on an object after centering, to update controls area. 将对象垂直放置在最后添加到的画布上。 你可能需要在定心之后在一个对象上调用setcoord来更新控件区域。
Inherited From:
Source:
Returns:
thisArg
Type
fabric.Object

cleanStyle(property)

Check if characters in a text have a value for a property whose value matches the textbox's value for that property. If so, the character-level property is deleted. If the character has no other properties, then it is also deleted. Finally, if the line containing that character has no other characters then it also is deleted. 检查文本中的字符是否具有属性值 其值与该属性的文本框的值相匹配。如果是这样, 删除字符级属性。如果字符 没有其他属性，则也将其删除。最后, 如果包含该字符的行没有其他字符 然后它也被删除了。
Parameters:
Name Type Description
property string The property to compare between characters and text.用于比较字符和文本的属性。
Inherited From:
Source:

clearContextTop()

Prepare and clean the contextTop 准备和清洁contextTop
Inherited From:
Source:

clone(callback, propertiesToIncludeopt)

Clones an instance, using a callback method will work for every object. 克隆一个实例，使用回调方法将适用于每个对象。
Parameters:
Name Type Attributes Description
callback function Callback is invoked with a clone as a first argument使用克隆作为第一个参数调用回调
propertiesToInclude Array <optional>
 Any properties that you might want to additionally include in the output您可能希望在输出中额外包含的任何属性
Inherited From:
Source:

cloneAsImage(callback, optionsopt) → {fabric.Object}

Creates an instance of fabric.Image out of an object makes use of toCanvasElement. Once this method was based on toDataUrl and loadImage, so it also had a quality and format option. toCanvasElement is faster and produce no loss of quality. If you need to get a real Jpeg or Png from an object, using toDataURL is the right way to do it. toCanvasElement and then toBlob from the obtained canvas is also a good option. This method is sync now, but still support the callback because we did not want to break. When fabricJS 5.0 will be planned, this will probably be changed to not have a callback. 创建fabric实例。一个物体的图像 使用toCanvasElement。 一旦这个方法是基于toDataUrl和loadImage，那么它也有一个质量 和格式选项。toCanvasElement更快，并且不会产生质量损失。 如果您需要从对象中获取真正的Jpeg或Png，那么使用toDataURL是正确的方法。 toCanvasElement，然后从获得的画布toBlob也是一个不错的选择。 这个方法现在是同步的，但仍然支持回调，因为我们不想中断。 当计划发布fabricJS 5.0时，这可能会被更改为没有回调。
Parameters:
Name Type Attributes Description
callback function callback, invoked with an instance as a first argument回调，使用实例作为第一个参数调用
options Object <optional>
 for clone as image, passed to toDataURL
Properties
Name Type Attributes Default Description
multiplier Number <optional>
 1 Multiplier to scale by乘数乘以
left Number <optional>
 Cropping left offset. Introduced in v1.2.14裁剪左偏移。在v1.2.14中引入
top Number <optional>
 Cropping top offset. Introduced in v1.2.14裁剪顶部偏移。在v1.2.14中引入
width Number <optional>
 Cropping width. Introduced in v1.2.14裁剪宽度。在v1.2.14中引入
height Number <optional>
 Cropping height. Introduced in v1.2.14种植的高度。在v1.2.14中引入
enableRetinaScaling Boolean <optional>
 Enable retina scaling for clone image. Introduce in 1.6.4启用视网膜缩放克隆图像。1.6.4引入
withoutTransform Boolean <optional>
 Remove current object transform ( no scale , no angle, no flip, no skew ). Introduced in 2.3.4移除当前对象变换(无缩放、无角度、无翻转、无倾斜)。在2.3.4中引入
withoutShadow Boolean <optional>
 Remove current object shadow. Introduced in 2.4.2移除当前对象阴影。2.4.2引入
将克隆作为图像传递给toDataURL 属性 名字 类型 属性 默认的 描述 乘数 数量 1 乘数乘以 左 数量 裁剪左偏移。在v1.2.14中引入 前 数量 裁剪顶部偏移。在v1.2.14中引入 宽度 数量 裁剪宽度。在v1.2.14中引入 高度 数量 种植的高度。在v1.2.14中引入 enableRetinaScaling 布尔 启用视网膜缩放克隆图像。1.6.4引入 withoutTransform 布尔 移除当前对象变换(无缩放、无角度、无翻转、无倾斜)。在2.3.4中引入 withoutShadow 布尔 移除当前对象阴影。2.4.2引入
Inherited From:
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Returns:
thisArg
Type
fabric.Object

complexity() → {Number}

Returns complexity of an instance 返回实例的复杂度
Inherited From:
Source:
Returns:
complexity
Type
Number

containsPoint(point, linesopt, absoluteopt, calculateopt) → {Boolean}

Checks if point is inside the object 检查point是否在对象内部
Parameters:
Name Type Attributes Description
point fabric.Point Point to check against指向核对
lines Object <optional>
 object returned from @method _getImageLines从@method _getImageLines返回的对象
absolute Boolean <optional>
 use coordinates without viewportTransform使用不带viewportTransform的坐标
calculate Boolean <optional>
 use coordinates of current position instead of .oCoords使用当前位置的坐标而不是。ocoordinates
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Returns:
true if point is inside the object
Type
Boolean

copy(e)

Copies selected text 拷贝选定文本
Parameters:
Name Type Description
e Event Event object事件对象
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dispose()

cancel instance's running animations 取消实例的运行动画
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doubleClickHandler()

Default handler for double click, select a word 默认处理程序为双击，选择一个单词
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drawBorders(ctx, styleOverride) → {fabric.Object}

Draws borders of an object's bounding box. Requires public properties: width, height Requires public options: padding, borderColor 绘制对象的边界框的边界。 需要公共属性:宽度，高度 需要公共选项:padding, borderColor
Parameters:
Name Type Description
ctx CanvasRenderingContext2D Context to draw on要借鉴的背景
styleOverride Object object to override the object style对象来覆盖对象样式
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Returns:
thisArg
Type
fabric.Object

drawBordersInGroup(ctx, options, styleOverride) → {fabric.Object}

Draws borders of an object's bounding box when it is inside a group. Requires public properties: width, height Requires public options: padding, borderColor 当对象处于组中时，绘制对象的边界框的边界。 需要公共属性:宽度，高度 需要公共选项:padding, borderColor
Parameters:
Name Type Description
ctx CanvasRenderingContext2D Context to draw on要借鉴的背景
options object object representing current object parameters对象，表示当前对象参数
styleOverride Object object to override the object style对象来覆盖对象样式
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Returns:
thisArg
Type
fabric.Object

drawCacheOnCanvas(ctx)

Paint the cached copy of the object on the target context. 在目标上下文中绘制对象的缓存副本。
Parameters:
Name Type Description
ctx CanvasRenderingContext2D Context to render on要渲染的上下文
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drawClipPathOnCache(ctx, clipPath)

Execute the drawing operation for an object clipPath 执行对象clipPath的绘图操作
Parameters:
Name Type Description
ctx CanvasRenderingContext2D Context to render on要渲染的上下文
clipPath fabric.Object
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drawControls(ctx, styleOverride) → {fabric.Object}

Draws corners of an object's bounding box. Requires public properties: width, height Requires public options: cornerSize, padding 绘制对象边界框的角。 需要公共属性:宽度，高度 需要公共选项:cornerSize, padding
Parameters:
Name Type Description
ctx CanvasRenderingContext2D Context to draw on要借鉴的背景
styleOverride Object object to override the object style对象来覆盖对象样式
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Source:
Returns:
thisArg
Type
fabric.Object

drawObject(ctx)

Execute the drawing operation for an object on a specified context 在指定的上下文中对对象执行绘图操作
Parameters:
Name Type Description
ctx CanvasRenderingContext2D Context to render on要渲染的上下文
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drawSelectionBackground(ctx) → {fabric.Object}

Draws a colored layer behind the object, inside its selection borders. Requires public options: padding, selectionBackgroundColor this function is called when the context is transformed has checks to be skipped when the object is on a staticCanvas 在对象后面的选择边界内绘制一个彩色图层。 需要公共选项:padding, selectionBackgroundColor 在转换上下文时调用此函数 当对象在静态画布上时，是否有检查要跳过
Parameters:
Name Type Description
ctx CanvasRenderingContext2D Context to draw on要借鉴的背景
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Returns:
thisArg
Type
fabric.Object

enlargeSpaces()

Enlarge space boxes and shift the others 放大空格盒并移动其他空格盒
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enterEditing() → {fabric.IText}

Enters editing state 进入编辑状态
Inherited From:
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Returns:
thisArg
Type
fabric.IText

exitEditing() → {fabric.IText}

Exits from editing state 退出编辑状态
Inherited From:
Source:
Returns:
thisArg
Type
fabric.IText

findLineBoundaryLeft(startFrom) → {Number}

Find new selection index representing start of current line according to current selection index 根据当前选择索引查找表示当前行起始的新选择索引
Parameters:
Name Type Description
startFrom Number Current selection index当前选择指标
Inherited From:
Source:
Returns:
New selection index
Type
Number

findLineBoundaryRight(startFrom) → {Number}

Find new selection index representing end of current line according to current selection index 根据当前选择索引查找表示当前行结束的新选择索引
Parameters:
Name Type Description
startFrom Number Current selection index当前选择指标
Inherited From:
Source:
Returns:
New selection index
Type
Number

findWordBoundaryLeft(startFrom) → {Number}

Find new selection index representing start of current word according to current selection index 根据当前选择索引查找代表当前单词开头的新选择索引
Parameters:
Name Type Description
startFrom Number Current selection index当前选择指标
Inherited From:
Source:
Returns:
New selection index
Type
Number

findWordBoundaryRight(startFrom) → {Number}

Find new selection index representing end of current word according to current selection index 根据当前选择索引查找代表当前单词结尾的新选择索引
Parameters:
Name Type Description
startFrom Number Current selection index当前选择指标
Inherited From:
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Returns:
New selection index
Type
Number

fire(eventName, optionsopt) → {Self}

Fires event with an optional options object 用可选的options对象触发事件
Parameters:
Name Type Attributes Description
eventName String Event name to fire事件名称触发
options Object <optional>
 Options object选择对象
Overrides:
Mixes In:
Source:
Returns:
thisArg
Type
Self

forEachControl(fn)

Calls a function for each control. The function gets called, with the control, the object that is calling the iterator and the control's key 为每个控件调用一个函数。函数被调用， 对于控件，调用迭代器的对象和控件的键
Parameters:
Name Type Description
fn function function to iterate over the controls over函数来迭代控件
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fromGraphemeToStringSelection()

convert from fabric to textarea values 将织物值转换为文本区域值
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fromStringToGraphemeSelection()

convert from textarea to grapheme indexes 将文本区索引转换为字形索引
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fxStraighten(callbacks) → {fabric.Object}

Same as fabric.Object.prototype.straighten but with animation 与fabric. object .prototype.straight相同，但带有动画
Parameters:
Name Type Description
callbacks Object Object with callback functions
Properties
Name Type Attributes Description
onComplete function <optional>
 Invoked on completion完成时调用
onChange function <optional>
 Invoked on every step of animation在动画的每一步调用
具有回调函数的对象 属性 名字 类型 属性 描述 onComplete 函数 完成时调用 onChange 函数 在动画的每一步调用
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Source:
Returns:
thisArg
Type
fabric.Object

get2DCursorLocation(selectionStartopt, skipWrappingopt)

Returns 2d representation (lineIndex and charIndex) of cursor (or selection start) 返回光标(或选择开始)的2d表示形式(lineIndex和charIndex)
Parameters:
Name Type Attributes Description
selectionStart Number <optional>
 Optional index. When not given, current selectionStart is used.可选的指数。如果未指定，则使用当前的selectionStart。
skipWrapping Boolean <optional>
 consider the location for unwrapped lines. useful to manage styles.考虑打开的行的位置。用于管理样式。
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getBoundingRect(absoluteopt, calculateopt) → {Object}

Returns coordinates of object's bounding rectangle (left, top, width, height) the box is intended as aligned to axis of canvas. 返回对象的边界矩形的坐标(左，上，宽，高) 该框要与画布的轴线对齐。
Parameters:
Name Type Attributes Description
absolute Boolean <optional>
 use coordinates without viewportTransform使用不带viewportTransform的坐标
calculate Boolean <optional>
 use coordinates of current position instead of .oCoords / .aCoords使用当前位置的坐标，而不是. ocoordinates / . acoord
Inherited From:
Source:
Returns:
Object with left, top, width, height properties
Type
Object

getCenterPoint() → {fabric.Point}

Returns the real center coordinates of the object 返回对象的真实中心坐标
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Source:
Returns:
Type
fabric.Point

getCompleteStyleDeclaration(lineIndex, charIndex) → {Object}

return a new object that contains all the style property for a character the object returned is newly created 返回一个包含字符所有样式属性的新对象 返回的对象是新创建的
Parameters:
Name Type Description
lineIndex Number of the line where the character is字符所在行的
charIndex Number position of the character on the line字符在行中的位置
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Source:
Returns:
style object
Type
Object

getCoords() → {Array}

return correct set of coordinates for intersection this will return either aCoords or lineCoords. The coords are returned in an array. 返回交点的正确坐标集 这将返回acoord或linecoord。 字符串以数组形式返回。
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Source:
Returns:
[tl, tr, br, bl] of points
Type
Array

getCurrentCharColor() → {String|fabric.Gradient|fabric.Pattern}

High level function to know the color of the cursor. the currentChar is the one that precedes the cursor Returns color (fill) of char at the current cursor if the text object has a pattern or gradient for filler, it will return that. Unused by the library, is for the end user 高级功能，知道光标的颜色。 currentChar是光标前面的那个 返回当前光标处char的颜色(填充) 如果文本对象具有填充符的模式或渐变，则返回该模式或渐变。 未使用的库，是为最终用户提供的
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Returns:
Character color (fill)
Type
String | fabric.Gradient | fabric.Pattern

getCurrentCharFontSize() → {Number}

High level function to know the height of the cursor. the currentChar is the one that precedes the cursor Returns fontSize of char at the current cursor Unused from the library, is for the end user 高级函数，可以知道光标的高度。 currentChar是光标前面的那个 返回当前光标处char的字体大小 库中未使用的，是为最终用户准备的
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Returns:
Character font size
Type
Number

getDownCursorOffset(e, isRight) → {Number}

Gets start offset of a selection 获取选定项的开始偏移量
Parameters:
Name Type Description
e Event Event object事件对象
isRight Boolean
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Source:
Returns:
Type
Number

getHeightOfChar(line, _char) → {Number}

Computes height of character at given position 计算给定位置字符的高度
Parameters:
Name Type Description
line Number the line index number行索引号
_char Number the character index number字符索引号
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Source:
Returns:
fontSize of the character
Type
Number

getHeightOfLine(lineIndex) → {Number}

Calculate height of line at 'lineIndex' 计算lineIndex处的行高度
Parameters:
Name Type Description
lineIndex Number index of line to calculate要计算的线的索引
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Source:
Returns:
Type
Number

getLocalPointer(e, pointeropt) → {Object}

Returns coordinates of a pointer relative to an object 返回指针相对于对象的坐标
Parameters:
Name Type Attributes Description
e Event Event to operate upon要操作的事件
pointer Object <optional>
 Pointer to operate upon (instead of event)要操作的指针(而不是事件)
Inherited From:
Source:
Returns:
Coordinates of a pointer (x, y)
Type
Object

getObjectOpacity() → {Number}

Return the object opacity counting also the group property 返回对象的不透明度计数和组属性
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Source:
Returns:
Type
Number

getObjectScaling() → {Object}

Return the object scale factor counting also the group scaling 返回对象缩放因子计数以及组缩放
Inherited From:
Source:
Returns:
object with scaleX and scaleY properties
Type
Object

getPointByOrigin(originX, originY) → {fabric.Point}

Returns the coordinates of the object as if it has a different origin 返回对象的坐标，就好像它有不同的原点一样
Parameters:
Name Type Description
originX String Horizontal origin: 'left', 'center' or 'right'水平原点:“左”、“中”或“右”
originY String Vertical origin: 'top', 'center' or 'bottom'垂直原点:'top'， 'center'或'bottom'
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Returns:
Type
fabric.Point

getScaledHeight() → {Number}

Returns height of an object bounding box counting transformations before 2.0 it was named getHeight(); 返回计算转换的对象边界框的高度 在2.0之前，它被命名为getHeight();
Inherited From:
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Returns:
height value
Type
Number

getScaledWidth() → {Number}

Returns width of an object's bounding box counting transformations before 2.0 it was named getWidth(); 返回对象的边界框计数转换的宽度 在2.0之前，它被命名为getWidth();
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Returns:
width value
Type
Number

getSelectedText() → {String}

Returns selected text 返回所选文本
Inherited From:
Source:
Returns:
Type
String

getSelectionStartFromPointer(e) → {Number}

Returns index of a character corresponding to where an object was clicked 返回与单击对象位置相对应的字符索引
Parameters:
Name Type Description
e Event Event object事件对象
Inherited From:
Source:
Returns:
Index of a character
Type
Number

getSelectionStyles(startIndexopt, endIndexopt, completeopt) → {Array}

Gets style of a current selection/cursor (at the start position) if startIndex or endIndex are not provided, selectionStart or selectionEnd will be used. 获取当前选定项/光标(在起始位置)的样式。 如果没有提供startIndex或endIndex，则使用selectionStart或selectionEnd。
Parameters:
Name Type Attributes Description
startIndex Number <optional>
 Start index to get styles at启动索引以获取样式
endIndex Number <optional>
 End index to get styles at, if not specified selectionEnd or startIndex + 1获取样式的结束索引，如果没有指定selectionEnd或startIndex + 1
complete Boolean <optional>
 get full style or not是否得到完整的风格
Inherited From:
Source:
Returns:
styles an array with one, zero or more Style objects
Type
Array

getSvgCommons() → {String}

Returns id attribute for svg output 返回svg输出的id属性
Inherited From:
Source:
Returns:
Type
String

getSvgFilter() → {String}

Returns filter for svg shadow 返回svg阴影滤镜
Inherited From:
Source:
Returns:
Type
String

getSvgSpanStyles(style, useWhiteSpace) → {String}

Returns styles-string for svg-export 返回svg-export的样式字符串
Parameters:
Name Type Description
style Object the object from which to retrieve style properties要从中检索样式属性的对象
useWhiteSpace Boolean a boolean to include an additional attribute in the style.布尔值，用于在样式中包含附加属性。
Inherited From:
Source:
Returns:
Type
String

getSvgStyles(skipShadow) → {String}

Returns styles-string for svg-export 返回svg-export的样式字符串
Parameters:
Name Type Description
skipShadow Boolean a boolean to skip shadow filter output跳过阴影过滤器输出的布尔值
Inherited From:
Source:
Returns:
Type
String

getSvgTextDecoration(style) → {String}

Returns text-decoration property for svg-export 返回svg-export的文本装饰属性
Parameters:
Name Type Description
style Object the object from which to retrieve style properties要从中检索样式属性的对象
Inherited From:
Source:
Returns:
Type
String

getSvgTransform(use) → {String}

Returns transform-string for svg-export 返回svg导出的转换字符串
Parameters:
Name Type Description
use Boolean the full transform or the single object one.完整的变换或者单个对象的变换。
Inherited From:
Source:
Returns:
Type
String

getTotalObjectScaling() → {Object}

Return the object scale factor counting also the group scaling, zoom and retina 返回对象缩放因子计数以及组缩放、缩放和视网膜
Inherited From:
Source:
Returns:
object with scaleX and scaleY properties
Type
Object

getUpCursorOffset(e, isRight) → {Number}

Parameters:
Name Type Description
e Event Event object事件对象
isRight Boolean
Inherited From:
Source:
Returns:
Type
Number

getValueOfPropertyAt(lineIndex, charIndex, property)

Retrieves the value of property at given character position 检索给定字符位置的属性值
Parameters:
Name Type Description
lineIndex Number the line number行号
charIndex Number the character number字符号
property String the property name属性名
Inherited From:
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Returns:
the value of 'property'

getViewportTransform() → {Array}

Retrieves viewportTransform from Object's canvas if possible 如果可能的话，从对象的画布中检索viewportTransform
Inherited From:
Source:
Returns:
Type
Array

hasFill()

return true if the object will draw a fill Does not consider text styles. This is just a shortcut used at rendering time We want it to be an approximation and be fast. wrote to avoid extra caching, it has to return true when fill happens, can guess when it will not happen at 100% chance, does not matter if it misses some use case where the fill is invisible. 如果对象要绘制填充，则返回true 不考虑文本样式。这只是在渲染时使用的快捷方式 我们希望它是一个近似值，而且要快。 为了避免额外的缓存，它必须在填充发生时返回true， 能以100%的几率猜出什么时候不会发生，错过了也没关系 一些用例中填充是不可见的。
Since:
  • 3.0.0
Inherited From:
Source:
Returns:
Boolean

hasStateChanged(propertySetopt) → {Boolean}

Returns true if object state (one of its state properties) was changed 如果对象状态(它的状态属性之一)被改变，返回true
Parameters:
Name Type Attributes Description
propertySet String <optional>
 optional name for the set of property we want to save要保存的属性集的可选名称
Inherited From:
Source:
Returns:
true if instance' state has changed since `fabric.Object#saveState` was called
Type
Boolean

hasStroke()

return true if the object will draw a stroke Does not consider text styles. This is just a shortcut used at rendering time We want it to be an approximation and be fast. wrote to avoid extra caching, it has to return true when stroke happens, can guess when it will not happen at 100% chance, does not matter if it misses some use case where the stroke is invisible. 如果对象将绘制笔画，则返回true 不考虑文本样式。这只是在渲染时使用的快捷方式 我们希望它是一个近似值，而且要快。 为了避免额外的缓存，它必须在笔划发生时返回true， 能以100%的几率猜出什么时候不会发生，错过了也没关系 在某些用例中，笔画是不可见的。
Since:
  • 3.0.0
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Source:
Returns:
Boolean

initAddedHandler()

Initializes "added" event handler 初始化“添加的”事件处理程序
Inherited From:
Source:

initBehavior()

Initializes all the interactive behavior of IText 初始化ittext的所有交互行为
Inherited From:
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initClicks()

Initializes double and triple click event handlers 初始化双击和三重单击事件处理程序
Inherited From:
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initCursorSelectionHandlers()

Initializes event handlers related to cursor or selection 初始化与游标或选择相关的事件处理程序
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initDelayedCursor()

Initializes delayed cursor 初始化延迟游标
Inherited From:
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initDoubleClickSimulation()

Initializes "dbclick" event handler 初始化"dbclick"事件处理程序
Inherited From:
Source:

initHiddenTextarea()

Initializes hidden textarea (needed to bring up keyboard in iOS) 初始化隐藏文本区域(需要在iOS中调出键盘)
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Source:

initialize(text, optionsopt) → {fabric.IText}

Constructor 构造函数
Parameters:
Name Type Attributes Description
text String Text string文本字符串
options Object <optional>
 Options object选择对象
Inherited From:
Source:
Returns:
thisArg
Type
fabric.IText

initMousedownHandler()

Initializes "mousedown" event handler 初始化"mousedown"事件处理程序
Inherited From:
Source:

initMouseMoveHandler()

Initializes "mousemove" event handler 初始化“mousmove”事件处理程序
Inherited From:
Source:

initMouseupHandler()

Initializes "mouseup" event handler 初始化“mouseup”事件处理程序
Inherited From:
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insertChars(text, style, start, end)

insert characters at start position, before start position. start equal 1 it means the text get inserted between actual grapheme 0 and 1 if style array is provided, it must be as the same length of text in graphemes if end is provided and is bigger than start, old text is replaced. start/end ar per grapheme position in _text array. 在起始位置插入字符，在起始位置之前。 开始等于1，这意味着文本插入到实际字母0和1之间 如果提供了样式数组，它必须具有相同的字符长度的文本 如果提供了end且大于start，则替换旧文本。 开始/结束在_text数组中的每个字母位置。
Parameters:
Name Type Description
text String text to insert要插入的文本
style Array array of style objects样式对象数组
start Number
end Number default to start + 1默认从+ 1开始
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insertCharStyleObject(lineIndex, charIndex, quantity, copiedStyle)

Inserts style object for a given line/char index 为给定的行/字符索引插入样式对象
Parameters:
Name Type Description
lineIndex Number Index of a line直线的索引
charIndex Number Index of a charchar的索引
quantity Number number Style object to insert, if given如果给定，要插入的样式对象
copiedStyle Array array of style objects样式对象数组
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insertNewlineStyleObject(lineIndex, charIndex, qty, copiedStyle)

Handle insertion of more consecutive style lines for when one or more newlines gets added to the text. Since current style needs to be shifted first we shift the current style of the number lines needed, then we add new lines from the last to the first. 处理插入更多连续样式行，当一个或多个 将换行符添加到文本中。因为现在的风格需要改变 首先，我们改变当前所需的数轴样式，然后进行加法 从最后一行到第一行都是新的。
Parameters:
Name Type Description
lineIndex Number Index of a line直线的索引
charIndex Number Index of a charchar的索引
qty Number number of lines to add要添加的行数
copiedStyle Array Array of objects styles对象样式数组
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insertNewStyleBlock(insertedText, start, copiedStyleopt)

Inserts style object(s) 插入样式对象
Parameters:
Name Type Attributes Description
insertedText Array Characters at the location where style is inserted插入样式位置的字符
start Number cursor index for inserting style用于插入样式的游标索引
copiedStyle Array <optional>
 array of style objects to insert.要插入的样式对象的数组。
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intersectsWithObject(other, absoluteopt, calculateopt) → {Boolean}

Checks if object intersects with another object 检查对象是否与另一个对象相交
Parameters:
Name Type Attributes Description
other Object Object to test测试对象
absolute Boolean <optional>
 use coordinates without viewportTransform使用不带viewportTransform的坐标
calculate Boolean <optional>
 use coordinates of current position instead of .oCoords使用当前位置的坐标而不是。ocoordinates
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Returns:
true if object intersects with another object
Type
Boolean

intersectsWithRect(pointTL, pointBR, absoluteopt, calculateopt) → {Boolean}

Checks if object intersects with an area formed by 2 points 检查对象是否与由两点组成的区域相交
Parameters:
Name Type Attributes Description
pointTL Object top-left point of area区域的左上角点
pointBR Object bottom-right point of area区域的右下点
absolute Boolean <optional>
 use coordinates without viewportTransform使用不带viewportTransform的坐标
calculate Boolean <optional>
 use coordinates of current position instead of .oCoords使用当前位置的坐标而不是。ocoordinates
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Returns:
true if object intersects with an area formed by 2 points
Type
Boolean

isCacheDirty(skipCanvas)

Check if cache is dirty 检查缓存是否脏
Parameters:
Name Type Description
skipCanvas Boolean skip canvas checks because this object is painted on parent canvas.跳过画布检查，因为该对象已被绘制 在父画布上。
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isContainedWithinObject(other, absoluteopt, calculateopt) → {Boolean}

Checks if object is fully contained within area of another object 检查对象是否完全包含在另一个对象的区域内
Parameters:
Name Type Attributes Description
other Object Object to test测试对象
absolute Boolean <optional>
 use coordinates without viewportTransform使用不带viewportTransform的坐标
calculate Boolean <optional>
 use coordinates of current position instead of .oCoords使用当前位置的坐标而不是。ocoordinates
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Returns:
true if object is fully contained within area of another object
Type
Boolean

isContainedWithinRect(pointTL, pointBR, absoluteopt, calculateopt) → {Boolean}

Checks if object is fully contained within area formed by 2 points 检查物体是否完全包含在由2个点组成的区域内
Parameters:
Name Type Attributes Description
pointTL Object top-left point of area区域的左上角点
pointBR Object bottom-right point of area区域的右下点
absolute Boolean <optional>
 use coordinates without viewportTransform使用不带viewportTransform的坐标
calculate Boolean <optional>
 use coordinates of current position instead of .oCoords使用当前位置的坐标而不是。ocoordinates
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Returns:
true if object is fully contained within area formed by 2 points
Type
Boolean

isControlVisible(controlKey) → {Boolean}

Returns true if the specified control is visible, false otherwise. 如果指定的控件可见则返回true，否则返回false。
Parameters:
Name Type Description
controlKey String The key of the control. Possible values are 'tl', 'tr', 'br', 'bl', 'ml', 'mt', 'mr', 'mb', 'mtr'.控制键。可能的值是“tl”,“tr”,“品牌”,“提单”、“毫升”、“太”,“先生”,“m”,“地铁”。
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Returns:
true if the specified control is visible, false otherwise
Type
Boolean

isEmptyStyles(lineIndex) → {Boolean}

Returns true if object has no styling or no styling in a line 如果对象没有样式或一行中没有样式，则返回true
Parameters:
Name Type Description
lineIndex Number , lineIndex is on wrapped lines.lineIndex在换行行上。
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Returns:
Type
Boolean

isEndOfWrapping() → {Boolean}

Detect if the text line is ended with an hard break text and itext do not have wrapping, return false 检测文本行是否以硬分隔符结束 Text和ittext没有换行，返回false
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Returns:
Type
Boolean

isOnScreen(calculateopt) → {Boolean}

Checks if object is contained within the canvas with current viewportTransform the check is done stopping at first point that appears on screen 检查对象是否包含在当前viewportTransform的画布中 检查在屏幕上出现的第一个点停止
Parameters:
Name Type Attributes Description
calculate Boolean <optional>
 use coordinates of current position instead of .aCoords使用当前位置的坐标而不是。acoord
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Returns:
true if object is fully or partially contained within canvas
Type
Boolean

isPartiallyOnScreen(calculateopt) → {Boolean}

Checks if object is partially contained within the canvas with current viewportTransform 使用当前viewportTransform检查对象是否部分包含在画布中
Parameters:
Name Type Attributes Description
calculate Boolean <optional>
 use coordinates of current position instead of .oCoords使用当前位置的坐标而不是。ocoordinates
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Returns:
true if object is partially contained within canvas
Type
Boolean

isType(type) → {Boolean}

Returns true if specified type is identical to the type of an instance 如果指定的类型与实例的类型相同，则返回true
Parameters:
Name Type Description
type String Type to check against要检查的类型
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Returns:
Type
Boolean

measureLine(lineIndex) → {Number}

measure a text line measuring all characters. 测量文本行，测量所有字符。
Parameters:
Name Type Description
lineIndex Number line number行号
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Returns:
Line width
Type
Number

missingNewlineOffset()

Detect if a line has a linebreak and so we need to account for it when moving and counting style. It return always for text and Itext. 检测一行是否有换行，因此我们需要在移动时考虑它 还有计数风格。 它总是为text和ittext返回。
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Returns:
Number

moveCursorDown(e)

Moves cursor down 向下移动光标
Parameters:
Name Type Description
e Event Event object事件对象
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moveCursorLeft(e)

Moves cursor left 向左移动光标
Parameters:
Name Type Description
e Event Event object事件对象
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moveCursorLeftWithoutShift(e)

Moves cursor left without keeping selection 将光标向左移动而不保持选择
Parameters:
Name Type Description
e Event
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moveCursorLeftWithShift(e)

Moves cursor left while keeping selection 在保持选择的同时向左移动光标
Parameters:
Name Type Description
e Event
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moveCursorRight(e)

Moves cursor right 向右移动光标
Parameters:
Name Type Description
e Event Event object事件对象
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moveCursorRightWithoutShift(e)

Moves cursor right without keeping selection 向右移动光标而不保持选择
Parameters:
Name Type Description
e Event Event object事件对象
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moveCursorRightWithShift(e)

Moves cursor right while keeping selection 在保持选择的同时向右移动光标
Parameters:
Name Type Description
e Event
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moveCursorUp(e)

Moves cursor up 向上移动光标
Parameters:
Name Type Description
e Event Event object事件对象
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moveCursorWithoutShift(offset)

Moves cursor up without shift 向上移动光标而不移位
Parameters:
Name Type Description
offset Number
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moveCursorWithShift(offset)

Moves cursor with shift 用shift键移动光标
Parameters:
Name Type Description
offset Number
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moveTo(index) → {fabric.Object}

Moves an object to specified level in stack of drawn objects 将对象移动到绘制对象堆栈中的指定位置
Parameters:
Name Type Description
index Number New position of object物体的新位置
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Returns:
thisArg
Type
fabric.Object

needsItsOwnCache()

When set to `true`, force the object to have its own cache, even if it is inside a group it may be needed when your object behave in a particular way on the cache and always needs its own isolated canvas to render correctly. Created to be overridden since 1.7.12 当设置为' true '时，强制对象拥有自己的缓存，即使它在一个组中 当您的对象在缓存上以特定方式运行并且总是需要时，可能需要 它自己独立的画布来正确渲染。 创建用于重写 自从1.7.12
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Returns:
Boolean

onCompositionEnd()

Composition end 作文结束
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onCompositionStart()

Composition start 作文开始
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onDeselect(optionsopt)

This callback function is called every time _discardActiveObject or _setActiveObject try to to deselect this object. If the function returns true, the process is cancelled 每次_discardActiveObject或_setActiveObject调用这个回调函数 尝试取消选择此对象。如果函数返回true，则进程被取消
Parameters:
Name Type Attributes Description
options Object <optional>
 options sent from the upper functions
Properties
Name Type Attributes Description
e Event <optional>
 event if the process is generated by an event如果流程是由事件生成的，则为事件
从上层函数发送的选项 属性 名字 类型 属性 描述 e 事件 如果流程是由事件生成的，则为事件
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onInput(e)

Handles onInput event 处理onInput事件
Parameters:
Name Type Description
e Event Event object事件对象
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onKeyDown(e)

Handles keydown event only used for arrows and combination of modifier keys. 处理按键事件 仅用于箭头和修改键的组合。
Parameters:
Name Type Description
e Event Event object事件对象
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onKeyUp(e)

Handles keyup event We handle KeyUp because ie11 and edge have difficulties copy/pasting if a copy/cut event fired, keyup is dismissed 处理按键事件 我们处理KeyUp，因为ie11和edge有复制/粘贴困难 如果触发了复制/剪切事件，keyup将被解除
Parameters:
Name Type Description
e Event Event object事件对象
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onSelect(optionsopt)

This callback function is called every time _discardActiveObject or _setActiveObject try to to select this object. If the function returns true, the process is cancelled 每次_discardActiveObject或_setActiveObject调用这个回调函数 尝试选择此对象。如果函数返回true，则进程被取消
Parameters:
Name Type Attributes Description
options Object <optional>
 options sent from the upper functions
Properties
Name Type Attributes Description
e Event <optional>
 event if the process is generated by an event如果流程是由事件生成的，则为事件
从上层函数发送的选项 属性 名字 类型 属性 描述 e 事件 如果流程是由事件生成的，则为事件
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paste(e)

Pastes text 粘贴的文本
Parameters:
Name Type Description
e Event Event object事件对象
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removeChars(start, end)

Removes characters from start/end start/end ar per grapheme position in _text array. 从开始/结束处删除字符 开始/结束在_text数组中的每个字母位置。
Parameters:
Name Type Description
start Number
end Number default to start + 1默认从+ 1开始
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removeStyle(props)

Remove a style property or properties from all individual character styles in a text object. Deletes the character style object if it contains no other style props. Deletes a line style object if it contains no other character styles. 从所有单个角色样式中移除一个或多个样式属性 在文本对象中。如果不包含其他样式，则删除角色样式对象 道具。如果不包含其他字符样式，则删除行样式对象。
Parameters:
Name Type Description
props String The property to remove from character styles.要从字符样式中删除的属性。
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removeStyleFromTo(start, end)

remove and reflow a style block from start to end. 从头到尾移除并回流样式块。
Parameters:
Name Type Description
start Number linear start position for removal (included in removal)用于拆卸的线性起始位置(包含在拆卸中)
end Number linear end position for removal ( excluded from removal )用于拆卸的线性末端位置(不包括拆卸)
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renderCursor(boundaries, ctx)

Renders cursor 使光标
Parameters:
Name Type Description
boundaries Object
ctx CanvasRenderingContext2D transformed context to draw on转换后的上下文
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renderCursorOrSelection()

Renders cursor or selection (depending on what exists) it does on the contextTop. If contextTop is not available, do nothing. 呈现光标或选择项(取决于存在的内容) 它在contextTop上做。如果contextTop不可用，什么也不做。
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renderSelection(boundaries, ctx)

Renders text selection 呈现文本选择
Parameters:
Name Type Description
boundaries Object Object with left/top/leftOffset/topOffset具有left/top/ leftovers /topOffset的对象
ctx CanvasRenderingContext2D transformed context to draw on转换后的上下文
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rotate(angle) → {fabric.Object}

Sets "angle" of an instance with centered rotation 以居中旋转方式设置实例的“角度”
Parameters:
Name Type Description
angle Number Angle value (in degrees)角度值(以度为单位)
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Source:
Returns:
thisArg
Type
fabric.Object

saveState(optionsopt) → {fabric.Object}

Saves state of an object 保存对象的状态
Parameters:
Name Type Attributes Description
options Object <optional>
 Object with additional `stateProperties` array to include when saving state对象，在保存状态时要包含附加的' stateProperties '数组
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Returns:
thisArg
Type
fabric.Object

scale(value) → {fabric.Object}

Scales an object (equally by x and y) 缩放对象(等量缩放x和y)
Parameters:
Name Type Description
value Number Scale factor比例因子
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Returns:
thisArg
Type
fabric.Object

scaleToHeight(value, absolute) → {fabric.Object}

Scales an object to a given height, with respect to bounding box (scaling by x/y equally) 将对象缩放到给定高度，相对于边界框(等量缩放x/y)
Parameters:
Name Type Description
value Number New height value新高度值
absolute Boolean ignore viewport忽略视窗
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Returns:
thisArg
Type
fabric.Object

scaleToWidth(value, absolute) → {fabric.Object}

Scales an object to a given width, with respect to bounding box (scaling by x/y equally) 将一个对象缩放到给定的宽度，相对于边界框(等量缩放x/y)
Parameters:
Name Type Description
value Number New width value新的宽度值
absolute Boolean ignore viewport忽略视窗
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Returns:
thisArg
Type
fabric.Object

searchWordBoundary(selectionStart, direction) → {Number}

Finds index corresponding to beginning or end of a word 查找对应于单词开头或结尾的索引
Parameters:
Name Type Description
selectionStart Number Index of a character字符索引
direction Number 1 or -11或-1
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Returns:
Index of the beginning or end of a word
Type
Number

selectAll() → {fabric.IText}

Selects entire text 选择整个文本
Inherited From:
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Returns:
thisArg
Type
fabric.IText

selectLine(selectionStart) → {fabric.IText}

Selects a line based on the index 根据索引选择一行
Parameters:
Name Type Description
selectionStart Number Index of a character字符索引
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Returns:
thisArg
Type
fabric.IText

selectWord(selectionStart)

Selects a word based on the index 根据索引选择一个单词
Parameters:
Name Type Description
selectionStart Number Index of a character字符索引
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sendBackwards(intersectingopt) → {fabric.Object}

Moves an object down in stack of drawn objects 在绘制的对象堆栈中向下移动一个对象
Parameters:
Name Type Attributes Description
intersecting Boolean <optional>
 If `true`, send object behind next lower intersecting object如果为true，则将对象发送到下一个较低相交对象的后面
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Returns:
thisArg
Type
fabric.Object

sendToBack() → {fabric.Object}

Moves an object to the bottom of the stack of drawn objects 将一个对象移动到绘制对象堆栈的底部
Inherited From:
Source:
Returns:
thisArg
Type
fabric.Object

set(key, value) → {fabric.Object}

Sets property to a given value. When changing position/dimension -related properties (left, top, scale, angle, etc.) `set` does not update position of object's borders/controls. If you need to update those, call `setCoords()`. 将属性设置为给定值。当更改与位置/尺寸相关的属性(左、顶、比例、角度等)时' set '不更新对象的边界/控件的位置。如果你需要更新那些，调用' setcoord() '。
Parameters:
Name Type Description
key String | Object Property name or object (if object, iterate over the object properties)属性名称或对象(如果是对象，则遍历对象属性)
value Object | function Property value (if function, the value is passed into it and its return value is used as a new one)属性值(if函数，将值传递给它，并将其返回值用作新值)
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Returns:
thisArg
Type
fabric.Object

setControlsVisibility(optionsopt) → {fabric.Object}

Sets the visibility state of object controls. 设置对象控件的可见性状态。
Parameters:
Name Type Attributes Description
options Object <optional>
 Options object
Properties
Name Type Attributes Description
bl Boolean <optional>
 true to enable the bottom-left control, false to disable itTrue为启用左下角控件，false为禁用它
br Boolean <optional>
 true to enable the bottom-right control, false to disable itTrue为启用右下角控件，false为禁用它
mb Boolean <optional>
 true to enable the middle-bottom control, false to disable itTrue为启用中底控件，false为禁用它
ml Boolean <optional>
 true to enable the middle-left control, false to disable itTrue为启用左中控件，false为禁用它
mr Boolean <optional>
 true to enable the middle-right control, false to disable itTrue为启用中右控件，false为禁用它
mt Boolean <optional>
 true to enable the middle-top control, false to disable itTrue为启用中顶控件，false为禁用它
tl Boolean <optional>
 true to enable the top-left control, false to disable itTrue为启用左上角控件，false为禁用它
tr Boolean <optional>
 true to enable the top-right control, false to disable itTrue为启用右上方控件，false为禁用它
mtr Boolean <optional>
 true to enable the middle-top-rotate control, false to disable itTrue为启用中顶旋转控件，false为禁用该控件
选择对象 属性 名字 类型 属性 描述 提单 布尔 True为启用左下角控件，false为禁用它 br 布尔 True为启用右下角控件，false为禁用它 mb 布尔 True为启用中底控件，false为禁用它 毫升 布尔 True为启用左中控件，false为禁用它 先生 布尔 True为启用中右控件，false为禁用它 太 布尔 True为启用中顶控件，false为禁用它 tl 布尔 True为启用左上角控件，false为禁用它 tr 布尔 True为启用右上方控件，false为禁用它 地铁 布尔 True为启用中顶旋转控件，false为禁用该控件
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Returns:
thisArg
Type
fabric.Object

setControlVisible(controlKey, visible) → {fabric.Object}

Sets the visibility of the specified control. 设置指定控件的可见性。
Parameters:
Name Type Description
controlKey String The key of the control. Possible values are 'tl', 'tr', 'br', 'bl', 'ml', 'mt', 'mr', 'mb', 'mtr'.控制键。可能的值是“tl”,“tr”,“品牌”,“提单”、“毫升”、“太”,“先生”,“m”,“地铁”。
visible Boolean true to set the specified control visible, false otherwiseTrue表示将指定的控件设置为可见，否则为false
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Source:
Returns:
thisArg
Type
fabric.Object

setCoords(skipCornersopt) → {fabric.Object}

Sets corner and controls position coordinates based on current angle, width and height, left and top. oCoords are used to find the corners aCoords are used to quickly find an object on the canvas lineCoords are used to quickly find object during pointer events. See https://github.com/fabricjs/fabric.js/wiki/When-to-call-setCoords and http://fabricjs.com/fabric-gotchas 根据当前角度、宽度和高度、左侧和顶部设置角和控制位置坐标。 弦是用来找角的 绳索用于快速找到画布上的对象 linecoord用于在指针事件期间快速查找对象。 参见https://github.com/fabricjs/fabric.js/wiki/When-to-call-setCoords和http://fabricjs.com/fabric-gotchas
Parameters:
Name Type Attributes Description
skipCorners Boolean <optional>
 skip calculation of oCoords.跳过ocord的计算。
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Source:
Returns:
thisArg
Type
fabric.Object

setCursorByClick(e)

Changes cursor location in a text depending on passed pointer (x/y) object 根据传递的指针(x/y)对象更改文本中的光标位置
Parameters:
Name Type Description
e Event Event object事件对象
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setOnGroup()

This callback function is called by the parent group of an object every time a non-delegated property changes on the group. It is passed the key and value as parameters. Not adding in this function's signature to avoid Travis build error about unused variables. 这个回调函数每次由对象的父组调用 对组上的非委托属性进行更改的时间。它被传递了密钥 值作为参数。不添加此函数的签名以避免 Travis构建关于未使用变量的错误。
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setOptions(optionsopt)

Sets object's properties from options 从选项设置对象的属性
Parameters:
Name Type Attributes Description
options Object <optional>
 Options object选择对象
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setPathInfo() → {fabric.Text}

If text has a path, it will add the extra information needed for path and text calculations 如果文本有路径，它将添加所需的额外信息 用于路径和文本计算
Inherited From:
Source:
Returns:
thisArg
Type
fabric.Text

setPositionByOrigin(pos, originX, originY) → {void}

Sets the position of the object taking into consideration the object's origin 根据对象的原点设置对象的位置
Parameters:
Name Type Description
pos fabric.Point The new position of the object对象的新位置
originX String Horizontal origin: 'left', 'center' or 'right'水平原点:“左”、“中”或“右”
originY String Vertical origin: 'top', 'center' or 'bottom'垂直原点:'top'， 'center'或'bottom'
Inherited From:
Source:
Returns:
Type
void

setSelectionEnd(index)

Sets selection end (right boundary of a selection) 设置选择结束(选择的右边界)
Parameters:
Name Type Description
index Number Index to set selection end to设置选择结束位置的索引
Inherited From:
Source:

setSelectionStart(index)

Sets selection start (left boundary of a selection) 设置选择开始(选择的左边界)
Parameters:
Name Type Description
index Number Index to set selection start to设置选择开始的索引
Inherited From:
Source:

setSelectionStartEndWithShift()

Set the selectionStart and selectionEnd according to the new position of cursor mimic the key - mouse navigation when shift is pressed. 根据光标的新位置设置selectionStart和selectionEnd 模仿按下shift键时的鼠标导航。
Inherited From:
Source:

setSelectionStyles(stylesopt, startIndexopt, endIndexopt) → {fabric.IText}

Sets style of a current selection, if no selection exist, do not set anything. 设置当前选择项的样式，如果不存在选择项，则不设置任何内容。
Parameters:
Name Type Attributes Description
styles Object <optional>
 Styles object样式对象
startIndex Number <optional>
 Start index to get styles at启动索引以获取样式
endIndex Number <optional>
 End index to get styles at, if not specified selectionEnd or startIndex + 1获取样式的结束索引，如果没有指定selectionEnd或startIndex + 1
Inherited From:
Source:
Returns:
thisArg
Type
fabric.IText

setSubscript(start, end) → {fabric.Text}

Turns the character into an 'inferior figure' (i.e. 'subscript') 将角色变成一个“劣等人物”(即:“下标”)
Parameters:
Name Type Description
start Number selection start选择开始
end Number selection end选择结束
Inherited From:
Source:
Returns:
thisArg
Type
fabric.Text

setSuperscript(start, end) → {fabric.Text}

Turns the character into a 'superior figure' (i.e. 'superscript') 将角色变成“高级人物”(即:“上标”)
Parameters:
Name Type Description
start Number selection start选择开始
end Number selection end选择结束
Inherited From:
Source:
Returns:
thisArg
Type
fabric.Text

setupState(optionsopt) → {fabric.Object}

Setups state of an object 设置对象的状态
Parameters:
Name Type Attributes Description
options Object <optional>
 Object with additional `stateProperties` array to include when saving state对象，在保存状态时要包含附加的' stateProperties '数组
Inherited From:
Source:
Returns:
thisArg
Type
fabric.Object

shiftLineStyles(lineIndex, offset)

Shifts line styles up or down 向上或向下移动线条样式
Parameters:
Name Type Description
lineIndex Number Index of a line直线的索引
offset Number Can any number?有数字吗?
Inherited From:
Source:

shouldCache() → {Boolean}

Decide if the object should cache or not. Create its own cache level objectCaching is a global flag, wins over everything needsItsOwnCache should be used when the object drawing method requires a cache step. None of the fabric classes requires it. Generally you do not cache objects in groups because the group outside is cached. Read as: cache if is needed, or if the feature is enabled but we are not already caching. 决定对象是否应该缓存。创建自己的缓存级别 objectCaching是一个全局标志，胜过一切 当对象绘制方法需要时，应该使用needsItsOwnCache 缓存步骤。没有一个fabric类需要它。 通常不缓存组中的对象，因为外部的组被缓存。 读取为:缓存，如果需要，或者如果功能已启用，但我们还没有缓存。
Inherited From:
Source:
Returns:
Type
Boolean

straighten() → {fabric.Object}

Straightens an object (rotating it from current angle to one of 0, 90, 180, 270, etc. depending on which is closer) 将物体拉直(将其从当前角度旋转到0,90,180,270等中的一个，取决于哪个更接近)
Inherited From:
Source:
Returns:
thisArg
Type
fabric.Object

styleHas(property, lineIndex) → {Boolean}

Returns true if object has a style property or has it ina specified line This function is used to detect if a text will use a particular property or not. 如果对象具有样式属性或在指定行中，则返回true 此函数用于检测文本是否将使用特定属性。
Parameters:
Name Type Description
property String to check for检查
lineIndex Number to check the style on来检查款式
Inherited From:
Source:
Returns:
Type
Boolean

toCanvasElement(options) → {HTMLCanvasElement}

Converts an object into a HTMLCanvas element 将一个对象转换为一个HTMLCanvas元素
Parameters:
Name Type Description
options Object Options object
Properties
Name Type Attributes Default Description
multiplier Number <optional>
 1 Multiplier to scale by乘数乘以
left Number <optional>
 Cropping left offset. Introduced in v1.2.14裁剪左偏移。在v1.2.14中引入
top Number <optional>
 Cropping top offset. Introduced in v1.2.14裁剪顶部偏移。在v1.2.14中引入
width Number <optional>
 Cropping width. Introduced in v1.2.14裁剪宽度。在v1.2.14中引入
height Number <optional>
 Cropping height. Introduced in v1.2.14种植的高度。在v1.2.14中引入
enableRetinaScaling Boolean <optional>
 Enable retina scaling for clone image. Introduce in 1.6.4启用视网膜缩放克隆图像。1.6.4引入
withoutTransform Boolean <optional>
 Remove current object transform ( no scale , no angle, no flip, no skew ). Introduced in 2.3.4移除当前对象变换(无缩放、无角度、无翻转、无倾斜)。在2.3.4中引入
withoutShadow Boolean <optional>
 Remove current object shadow. Introduced in 2.4.2移除当前对象阴影。2.4.2引入
选择对象 属性 名字 类型 属性 默认的 描述 乘数 数量 1 乘数乘以 左 数量 裁剪左偏移。在v1.2.14中引入 前 数量 裁剪顶部偏移。在v1.2.14中引入 宽度 数量 裁剪宽度。在v1.2.14中引入 高度 数量 种植的高度。在v1.2.14中引入 enableRetinaScaling 布尔 启用视网膜缩放克隆图像。1.6.4引入 withoutTransform 布尔 移除当前对象变换(无缩放、无角度、无翻转、无倾斜)。在2.3.4中引入 withoutShadow 布尔 移除当前对象阴影。2.4.2引入
Inherited From:
Source:
Returns:
Returns DOM element with the fabric.Object
Type
HTMLCanvasElement

toClipPathSVG(reviveropt) → {String}

Returns svg clipPath representation of an instance 返回实例的svg clipPath表示
Parameters:
Name Type Attributes Description
reviver function <optional>
 Method for further parsing of svg representation.进一步解析svg表示的方法。
Inherited From:
Source:
Returns:
svg representation of an instance
Type
String

toDatalessObject(propertiesToIncludeopt) → {Object}

Returns (dataless) object representation of an instance 返回实例的(无数据)对象表示
Parameters:
Name Type Attributes Description
propertiesToInclude Array <optional>
 Any properties that you might want to additionally include in the output您可能希望在输出中额外包含的任何属性
Inherited From:
Source:
Returns:
Object representation of an instance
Type
Object

toDataURL(options) → {String}

Converts an object into a data-url-like string 将对象转换为类似data-url的字符串
Parameters:
Name Type Description
options Object Options object
Properties
Name Type Attributes Default Description
format String <optional>
 png The format of the output image. Either "jpeg" or "png"输出图像的格式。jpeg或png格式
quality Number <optional>
 1 Quality level (0..1). Only used for jpeg.质量等级(0..1)。仅用于jpeg。
multiplier Number <optional>
 1 Multiplier to scale by乘数乘以
left Number <optional>
 Cropping left offset. Introduced in v1.2.14裁剪左偏移。在v1.2.14中引入
top Number <optional>
 Cropping top offset. Introduced in v1.2.14裁剪顶部偏移。在v1.2.14中引入
width Number <optional>
 Cropping width. Introduced in v1.2.14裁剪宽度。在v1.2.14中引入
height Number <optional>
 Cropping height. Introduced in v1.2.14种植的高度。在v1.2.14中引入
enableRetinaScaling Boolean <optional>
 Enable retina scaling for clone image. Introduce in 1.6.4启用视网膜缩放克隆图像。1.6.4引入
withoutTransform Boolean <optional>
 Remove current object transform ( no scale , no angle, no flip, no skew ). Introduced in 2.3.4移除当前对象变换(无缩放、无角度、无翻转、无倾斜)。在2.3.4中引入
withoutShadow Boolean <optional>
 Remove current object shadow. Introduced in 2.4.2移除当前对象阴影。2.4.2引入
Inherited From:
Source:
Returns:
Returns a data: URL containing a representation of the object in the format specified by options.format
Type
String

toJSON(propertiesToIncludeopt) → {Object}

Returns a JSON representation of an instance 返回实例的JSON表示形式
Parameters:
Name Type Attributes Description
propertiesToInclude Array <optional>
 Any properties that you might want to additionally include in the output您可能希望在输出中额外包含的任何属性
Inherited From:
Source:
Returns:
JSON
Type
Object

toLocalPoint(point, originX, originY) → {fabric.Point}

Returns the point in local coordinates 以本地坐标返回点
Parameters:
Name Type Description
point fabric.Point The point relative to the global coordinate system相对于全球坐标系的点
originX String Horizontal origin: 'left', 'center' or 'right'水平原点:“左”、“中”或“右”
originY String Vertical origin: 'top', 'center' or 'bottom'垂直原点:'top'， 'center'或'bottom'
Inherited From:
Source:
Returns:
Type
fabric.Point

toObject(propertiesToIncludeopt) → {Object}

Returns object representation of an instance 返回实例的对象表示形式
Parameters:
Name Type Attributes Description
propertiesToInclude Array <optional>
 Any properties that you might want to additionally include in the output您可能希望在输出中额外包含的任何属性
Inherited From:
Source:
Returns:
Object representation of an instance
Type
Object

toString() → {String}

Returns string representation of an instance 返回实例的字符串表示形式
Inherited From:
Source:
Returns:
String representation of text object
Type
String

toSVG(reviveropt) → {String}

Returns svg representation of an instance 返回实例的svg表示形式
Parameters:
Name Type Attributes Description
reviver function <optional>
 Method for further parsing of svg representation.进一步解析svg表示的方法。
Inherited From:
Source:
Returns:
svg representation of an instance
Type
String

transform(ctx)

Transforms context when rendering an object 在呈现对象时转换上下文
Parameters:
Name Type Description
ctx CanvasRenderingContext2D Context上下文
Inherited From:
Source:

translateToCenterPoint(point, originX, originY) → {fabric.Point}

Translates the coordinates from origin to center coordinates (based on the object's dimensions) 将坐标从原点转换为中心坐标(基于对象的尺寸)
Parameters:
Name Type Description
point fabric.Point The point which corresponds to the originX and originY params对应于originX和originY参数的点
originX String Horizontal origin: 'left', 'center' or 'right'水平原点:“左”、“中”或“右”
originY String Vertical origin: 'top', 'center' or 'bottom'垂直原点:'top'， 'center'或'bottom'
Inherited From:
Source:
Returns:
Type
fabric.Point

translateToGivenOrigin(point, fromOriginX, fromOriginY, toOriginX, toOriginY) → {fabric.Point}

Translates the coordinates from a set of origin to another (based on the object's dimensions) 将坐标从一组原点转换为另一组原点(基于对象的尺寸)
Parameters:
Name Type Description
point fabric.Point The point which corresponds to the originX and originY params对应于originX和originY参数的点
fromOriginX String Horizontal origin: 'left', 'center' or 'right'水平原点:“左”、“中”或“右”
fromOriginY String Vertical origin: 'top', 'center' or 'bottom'垂直原点:'top'， 'center'或'bottom'
toOriginX String Horizontal origin: 'left', 'center' or 'right'水平原点:“左”、“中”或“右”
toOriginY String Vertical origin: 'top', 'center' or 'bottom'垂直原点:'top'， 'center'或'bottom'
Inherited From:
Source:
Returns:
Type
fabric.Point

translateToOriginPoint(center, originX, originY) → {fabric.Point}

Translates the coordinates from center to origin coordinates (based on the object's dimensions) 将坐标从中心坐标转换为原点坐标(基于对象的尺寸)
Parameters:
Name Type Description
center fabric.Point The point which corresponds to center of the object与物体中心相对应的点
originX String Horizontal origin: 'left', 'center' or 'right'水平原点:“左”、“中”或“右”
originY String Vertical origin: 'top', 'center' or 'bottom'垂直原点:'top'， 'center'或'bottom'
Inherited From:
Source:
Returns:
Type
fabric.Point

tripleClickHandler()

Default handler for triple click, select a line 默认处理程序为三重单击，选择一行
Inherited From:
Source:

viewportCenter() → {fabric.Object}

Centers object on current viewport of canvas to which it was added last. You might need to call `setCoords` on an object after centering, to update controls area. 将对象居中于最后添加到的画布的当前视口中。 你可能需要在定心之后在一个对象上调用setcoord来更新控件区域。
Inherited From:
Source:
Returns:
thisArg
Type
fabric.Object

viewportCenterH() → {fabric.Object}

Centers object horizontally on current viewport of canvas to which it was added last. You might need to call `setCoords` on an object after centering, to update controls area. 将对象水平居中于最后添加到的画布的当前视口中。 你可能需要在定心之后在一个对象上调用setcoord来更新控件区域。
Inherited From:
Source:
Returns:
thisArg
Type
fabric.Object

viewportCenterV() → {fabric.Object}

Centers object vertically on current viewport of canvas to which it was added last. You might need to call `setCoords` on an object after centering, to update controls area. 将对象垂直居中于它最后添加到的画布的当前视口中。 你可能需要在定心之后在一个对象上调用setcoord来更新控件区域。
Inherited From:
Source:
Returns:
thisArg
Type
fabric.Object

willDrawShadow() → {Boolean}

Check if this object or a child object will cast a shadow used by Group.shouldCache to know if child has a shadow recursively 检查此对象或子对象是否会投射阴影 组使用。shouldCache递归地知道子节点是否有影子
Inherited From:
Source:
Returns:
Type
Boolean

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