FastLayer
new Konva.FastLayer(config)
FastLayer 构造函数。**已弃用！**请改用 Konva.Layer(\{ listening: false\})。图层与其自身的 canvas 元素绑定，仅用于容纳形状。如果不需要节点嵌套、鼠标和触摸交互或事件发布／订阅，则应使用 FastLayer 而不是 Layer 来创建图层。它的渲染速度大约比普通图层快 2 倍。
参数
| 名称 | 类型 | 描述 |
|---|---|---|
| clip（可选） | Object | 设置裁剪 |
| clipX（可选） | Number | 设置裁剪 x |
| clipY（可选） | Number | 设置裁剪 y |
| clipWidth（可选） | Number | 设置裁剪宽度 |
| clipHeight（可选） | Number | 设置裁剪高度 |
| clipFunc（可选） | function | 设置裁剪函数 |
继承自： Konva.Layer
继承的方法
Konva.FastLayer 还拥有其父类的所有方法。下面的每个链接都会打开定义该方法的类中对应方法的完整文档。
来自 Konva.Layer
- getCanvas()
- getNativeCanvasElement()
- getHitCanvas()
- getContext()
- width()
- height()
- batchDraw()
- getIntersection(pos)
- enableHitGraph()
- disableHitGraph()
- toggleHitCanvas()
- imageSmoothingEnabled(imageSmoothingEnabled)
- clearBeforeDraw(clearBeforeDraw)
- hitGraphEnabled(enabled)
来自 Konva.Container
- getChildren(filterFunc)
- hasChildren()
- removeChildren()
- destroyChildren()
- add(children)
- find(selector)
- findOne(selector)
- isAncestorOf(node)
- getAllIntersections(pos)
- clip(clip)
- clipX(x)
- clipY(y)
- clipWidth(width)
- clipHeight(height)
- clipFunc(function)
来自 Konva.Node
- clearCache()
- cache(config)
- isCached()
- getClientRect(config)
- off(evtStr)
- remove()
- destroy()
- getAttr(attr)
- getAncestors()
- getAttrs()
- setAttrs(config)
- isListening()
- isVisible()
- show()
- hide()
- getAbsoluteZIndex()
- getDepth()
- getRelativePointerPosition()
- getAbsolutePosition(Ancestor)
- move(change)
- rotate(theta)
- moveToTop()
- moveUp()
- moveDown()
- moveToBottom()
- getAbsoluteOpacity()
- moveTo(newContainer)
- toObject()
- toJSON()
- getParent()
- findAncestors(selector, includeSelf, stopNode)
- findAncestor(selector, includeSelf, stopNode)
- getLayer()
- getStage()
- fire(eventType, evt, bubble)
- getAbsoluteTransform()
- getAbsoluteScale()
- getAbsoluteRotation()
- getTransform()
- clone(obj)
- toCanvas(config)
- toDataURL(config)
- toImage(config)
- toBlob(config)
- getClassName()
- getType()
- addName(name)
- hasName(name)
- removeName(name)
- setAttr(attr, val)
- draw()
- startDrag()
- stopDrag()
- isDragging()
- isClientRectOnScreen(margin)
- zIndex(index)
- absolutePosition(pos)
- position(pos)
- x(x)
- y(y)
- globalCompositeOperation(type)
- opacity(opacity)
- name(name)
- id(id)
- rotation(rotation)
- scale(scale)
- scaleX(x)
- scaleY(y)
- skew(skew)
- skewX(x)
- skewY(y)
- offsetX(x)
- offsetY(y)
- dragDistance(distance)
- listening(listening)
- preventDefault(preventDefault)
- filters(filters)
- visible(visible)
- transformsEnabled(enabled)
- size(size)
- dragBoundFunc(dragBoundFunc)
- draggable(draggable)
- to(params)
- blurRadius(radius)
- brightness(brightness)
- contrast(contrast)
- embossStrength(level)
- embossWhiteLevel(embossWhiteLevel)
- embossDirection(embossDirection)
- embossBlend(embossBlend)
- enhance(amount)
- hue(hue)
- saturation(saturation)
- luminance(value)
- value(value)
- kaleidoscopePower(power)
- kaleidoscopeAngle(degrees)
- noise(noise)
- pixelSize(pixelSize)
- levels(level)
- red(red)
- green(green)
- blue(blue)
- alpha(alpha)
- threshold(threshold)