panzoom-core

Library for pan and zoom with possibility to moving, resizing and selecting elements inside.

!"Preview"

Demo

https://codesandbox.io/s/quiet-snow-qldnic

https://codesandbox.io/s/black-sound-vn77k9 (map with pin)

https://codesandbox.io/s/young-darkness-igcf67 (example from above)

https://codesandbox.io/s/gifted-pine-dhw9m6 (selecting elements)

https://codesandbox.io/s/festive-matsumoto-ccskw0 (Tic Tac Toe)

Library react-web-builder

Library react-grid-panzoom

Library @sasza/react-panzoom

Library react-drawing

Installation

``npm install panzoom-core`

Options

| Name | | Default | Description |
| --- | --- | --- | --- |
| boundary | { top, right, bottom left, parent } \| bool | false | top, right, bottom, left - numbers in px.
can be used as expression like:
{ top: 'childHeight - containerHeight - 100px' }
| disabledUserSelect | bool | false | prevent css select as text etc |
| disabled | bool | false | disabling pan and zoom |
| disabledElements | bool | false | disabling moving elements |
| disabledMove | bool | false | disabling move |
| disabledZoom | bool | false | disabling zoom |
| height | string/number | 100% | height of child container |
| onContainerChange | func | null | event on move/zoom |
| onContainerClick | func | null | event on mousedown/touchdown |
| onContainerPositionChange | func | null | event on position change |
| onContainerZoomChange | func | null | event on zoom change |
| onElementsChange | func | null | callback invoked when elements change position |
| selecting | bool | false | switches to selecting mode, see selecting |
| width | string/number | 100% | width of child container |
| zoomInitial | number | 1 | initial zoom value |
| zoomMax | number | 5 | maximum zoom |
| zoomMin | number | 0.3 | minimum zoom |
| zoomSpeed | number | 1 | zoom speed on wheel event |

API


`tsx
import initializePanZoom from 'panzoom-core'

const node = document.querySelector('[data-id="panzoom"]')
const panZoom = initializePanZoom(node, options)
`
`html



`

panzoom methods:

| Function | Description |
| --- | --- |
| setOptions(options) | Setting options for panzoom |
| addElement(node: HTMLDivElement, elementOptions: ElementOptions) => ElementApi | Adding new element to moving |
| move(x:number, y:number) | Add x and y in px to current offset. Returns current position {x, y} |
| getElements() | Returns map of elements |
| getPosition() | Returns current position {x, y} |
| setPosition(x:number, y:number) | Set offset position of pan |
| getZoom():number | Returns current zoom |
| setZoom(zoom:number) | Sets zoom |
| zoomIn(zoom:number) | Add to current zoom, could be also negative number (it will work like zoomOut) |
| zoomOut(zoom:number) | Sub from current zoom |
| childNode | Returns passed node |
| reset() | Reset to (0, 0, 0) |
| destroy() | Unmounting panzoom element |

Elements

!"Preview"

`tsx
import initializePanZoom from 'panzoom-core'

const node = document.querySelector('[data-id="panzoom"]')
const panZoom = initializePanZoom(node, options)

const elementA = panZoom.addElement(
document.querySelector('[data-id="element-a"]'),
{ id: 'a' },
)
const elementB = panZoom.addElement(
document.querySelector('[data-id="element-b"]'),
{ id: 'b', x: 100, y: 100 },
)
`
`html



`

Element properties

| Name | | Default | Description |
| --- | --- | --- | --- |
| id * | string/id | undefined | Unique ID of element |
| className | string | undefined | Class name for element |
| disabled | bool | false | Disabling element |
| draggableSelector | string | undefined | Selector for dragging element |
| family | string | undefined | Name of element's family, all of elements are connected during moving |
| followers | Array\ | [] | Similar to family, but for specified ids of elements |
| onClick | func | null | Event on element's click |
| onMouseUp | func | null | Event on element's mouse up |
| x | number | 0 | x position of element |
| y | number | 0 | y position of element |

__*__ - is required

Selecting

`tsx
import initializePanZoom from 'panzoom-core'

// ...
const panZoom = initializePanZoom(node, { selecting: true })

// to disable:
panZoom.setOptions({ selecting: false })
`

!"Preview"

Installing for development


`
pnpm i
`

Testing

`
pnpm test
`

Examples

`
pnpm dev
``