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React SVG Pan Zoom - documentation

Available Props

Prop Default Type Description
width required Number Width of the viewer displayed on screen (if you want to omit this see Autosize)
height required Number Height of the viewer displayed on screen (if you want to omit this see Autosize)
value required Object Lock the viewer to a specific value (if you want to omit this use <UncontrolledReactSVGPanZoom> component)
onChangeValue required fn(value: object) Callback called when the viewer changes its value (if you want to omit this use <UncontrolledReactSVGPanZoom> component)
tool required one of none, pan, zoom-in, zoom-out, auto Lock the viewer to a specific tool (if you want to omit this use <UncontrolledReactSVGPanZoom> component)
onChangeTool required fn(tool: string) Callback called when the viewer changes the used tool (if you want to omit this use <UncontrolledReactSVGPanZoom> component)
background #616264 String Background of the viewer
SVGBackground white String Background of the SVG
SVGStyle {} Object Style of the SVG
style - Object CSS style of the viewer
className - String CSS class of the viewer
detectWheel true Boolean Perform zoom operation on mouse scroll
detectAutoPan true Boolean Perform PAN if the mouse is on the border of the viewer
detectPinchGesture true Boolean Perform zoom operation on pinch gesture
onZoom - fn(value: object) Callback called when the zoom level changes
onPan - fn(value: object) Callback called when a pan action is performed
onClick - fn(viewerEvent: ViewerMouseEvent) Handler* for click
onDoubleClick - fn(viewerEvent: ViewerMouseEvent) Handler* for dblclick
onMouseUp - fn(viewerEvent: ViewerMouseEvent) Handler* for mouseup
onMouseMove - fn(viewerEvent: ViewerMouseEvent) Handler* for mousemove
onMouseDown - fn(viewerEvent: ViewerMouseEvent) Handler* for mousedown
onTouchStart - fn(viewerEvent: ViewerTouchEvent) Handler* for mousedown
onTouchMove - fn(viewerEvent: ViewerTouchEvent) Handler* for mousedown
onTouchEnd - fn(viewerEvent: ViewerTouchEvent) Handler* for mousedown
onTouchCancel - fn(viewerEvent: ViewerTouchEvent) Handler* for mousedown
preventPanOutside true Boolean User can't move the image outside the viewer
scaleFactor 1.1 Number How much scale in or out (%)
scaleFactorOnWheel 1.06 Number how much scale in or out on mouse wheel (requires detectWheel to be enabled) (%)
scaleFactorMax - Number maximum amount of scale a user can zoom in to
scaleFactorMin - Number minimum amount of scale a user can zoom out of
modifierKeys - Array Array with modifier keys used with the tool auto to swap zoom in and zoom out (Accepted value)
disableDoubleClickZoomWithToolAuto false Boolean Turn off zoom on double click
customMiniature - Component Override miniature component
miniatureProps {} Object Miniature settings
miniatureProps.position left one of none, right, left Miniature position
miniatureProps.background #616264 String background of the miniatureProps.
miniatureProps.width 100 Number Miniature width (px)
miniatureProps.height 80 Number Miniature height (px)
customToolbar - Component Override toolbar component
toolbarProps {} Object Toolbar settings
toolbarProps.position right one of none, top, right, bottom, left Toolbar position
toolbarProps.SVGAlignX left one of left, center, right X Alignment used for "Fit to Viewer" action
toolbarProps.SVGAlignY top one of top, center, bottom Y Alignment used for "Fit to Viewer" action
toolbarProps.activeToolColor #1CA6FC String Color of active and hovered tool icons

* handler available only with the tool none or auto

Methods

Method Description
pan(SVGDeltaX, SVGDeltaY) Apply a pan
zoom(SVGPointX, SVGPointY, scaleFactor) Zoom in or out the SVG
fitSelection(selectionSVGPointX, selectionSVGPointY, selectionWidth, selectionHeight) Fit an SVG area to viewer
fitToViewer(SVGAlignX = "left", SVGAlignY = "top") Fit all SVG to Viewer (SVGAlignX: one of left, center, right, SVGAlignY: one of top, center, bottom)
setPointOnViewerCenter(SVGPointX, SVGPointY, zoomLevel) Set a point on Viewer center
reset() Reset Viewer view to default
zoomOnViewerCenter(scaleFactor) Zoom SVG on center
getValue() Get current viewer value
setValue(value) Through this method you can set a new value
getTool() Get current tool
changeTool(tool) Change the tool (one of none,pan,zoom-in,zoom-out,auto)
openMiniature Open the miniature
closeMiniature Close the miniature

Event attributes

To your event handlers will be passed an instance of ViewerMouseEvent or ViewerTouchEvent (as the case). They have some useful attributes that map event positions to SVG coords. If, for your purpose, you need the original React event instance (SyntheticEvent), you can get it through event.originalEvent. You can't use event in async way, see React Event Pooling for more information.

Viewer Mouse Event

Property Return Description
originalEvent SyntheticEvent The original React event
SVGViewer SVGSVGElement Reference to SVGViewer
point Object Coordinates (x,y) of the event mapped to SVG coordinates
x Number x coordinate of the event mapped to SVG coordinates
y Number y coordinate of the event mapped to SVG coordinates
scaleFactor Number Zoom level
translationX Number x delta from the viewer origin
translationY Number y delta from the viewer origin
preventDefault() - alias originalEvent.preventDefault()
stopPropagation() - alias originalEvent.stopPropagation()

Viewer Touch Event

Property Return Description
originalEvent SyntheticEvent The original React event
SVGViewer SVGSVGElement Reference to SVGViewer
points Array Array with coordinates (x, y, identifier) of the touches mapped to SVG coordinates
changedPoints Array Coordinates (x, y, identifier) of the changed touches mapped to SVG coordinates
scaleFactor Number Zoom level
translationX Number x delta from the viewer origin
translationY Number y delta from the viewer origin
preventDefault() - alias originalEvent.preventDefault()
stopPropagation() - alias originalEvent.stopPropagation()

API

This is a list of components, functions and constants exported by the library.

import {
  //components
  ReactSVGPanZoom,             //Controlled component
  UncontrolledReactSVGPanZoom, //Uncontrolled component
  
  //functions to manipulate the state. The signature is quite similar to component methods, expect for the first parameter that is the current value. These are usefull only for some advanced integrations (e.g. reducers). 
  setPointOnViewerCenter,   //setPointOnViewerCenter(value, SVGPointX, SVGPointY, zoomLevel)
  reset,                    //reset(value)
  pan,                      //pan(value, SVGDeltaX, SVGDeltaY)
  zoom,                     //zoom(value, SVGPointX, SVGPointY, scaleFactor)
  fitSelection,             //fitSelection(value, selectionSVGPointX, selectionSVGPointY, selectionWidth, selectionHeight)
  fitToViewer,              //fitToViewer(value, SVGAlignX = "left", SVGAlignY = "top")
  zoomOnViewerCenter,       //zoomOnViewerCenter(value, scaleFactor)
  openMiniature,
  closeMiniature,
  
  //constants
  MODE_IDLE,
  MODE_PANNING,
  MODE_ZOOMING,
  
  TOOL_AUTO,
  TOOL_NONE,
  TOOL_PAN,
  TOOL_ZOOM_IN,
  TOOL_ZOOM_OUT,
  
  POSITION_NONE,
  POSITION_TOP,
  POSITION_RIGHT,
  POSITION_BOTTOM,
  POSITION_LEFT,
  
  ACTION_ZOOM,
  ACTION_PAN,
  
  ALIGN_CENTER,
  ALIGN_LEFT,
  ALIGN_RIGHT,
  ALIGN_TOP,
  ALIGN_BOTTOM,
  ALIGN_COVER,

  INITIAL_VALUE
} from 'react-svg-pan-zoom'