react-pannable

react-pannable

Simulate pan gesture and scroll view for touch devices with React

Getting started

Install react-pannable using npm.

npm install --save react-pannable

Examples

All the examples!

Some Pannable demos

• Draggable Notes
• Adjustable Sticker

Some Pad demos

• Scrollable Content
• Locating Specified Content
• Auto Resizing with Pad
• Layout with General Content
• Layout with Grid Content
• Layout with List Content

API Reference

Pannable

Pannable provides a pan gesture simulation on recent mobile browsers for iOS and Android. It can also be used on mouse-base devices across on all evergreen browsers.

type Point = { x: number, y: number };
type PanEvent = {
  translation: Point,
  velocity: Point,
  interval: number,
  target: HTMLElement,
};

Prop Types

Property	Type	DefaultValue	Description
enabled	boolean	true	Indicate whether the gesture listener is enabled. If you change this property to false while the gesture is listening, the gesture transitions to cancel.
shouldStart	function	() => true	Whether to start gesture listening. : (evt: PanEvent) => void
onStart	function	() => {}	Callback invoked when the gesture starts listening.: (evt: PanEvent) => void
onMove	function	() => {}	Callback invoked when the gesture moves.: (evt: PanEvent) => void
onEnd	function	() => {}	Callback invoked when the gesture ended listening.: (evt: PanEvent) => void
onCancel	function	() => {}	Callback invoked when the gesture cancelled.: (evt: PanEvent) => void

Pad

Pad provides a scrollable content component on which overflow scrollbars are not natively supported. It also provides paging scroll implementation and multiple content layout mode.

type Point = { x: number, y: number };
type Size = { width: number, height: number };
type Rect = { x: number, y: number, width: number, height: number };
type AlignEnum = 'auto' | 'center' | 'start' | 'end' | number;
type Align = { x: AlignEnum, y: AlignEnum } | AlignEnum;
type PadEvent = {
  contentOffset: Point,
  contentVelocity: Point,
  dragging: boolean,
  decelerating: boolean,
  size: Size,
  contentSize: Size,
};

Prop Types

Property	Type	DefaultValue	Description
children	element,function	null	Rendered content. Can be a render function, or a rendered element.:(pad: Pad) => element
width	number	0	The width of the bounding view.
height	number	0	The height of the bounding view.
contentWidth	number	0	The suggested width of the content view.
contentHeight	number	0	The suggested height of the content view.
scrollEnabled	boolean	true	Determines whether scrolling is enabled.
pagingEnabled	boolean	false	Determines whether paging is enabled.
directionalLockEnabled	boolean	false	Determines whether scrolling is disabled in a particular direction.
alwaysBounceX	boolean	true	Determines whether bouncing always occurs when horizontal scrolling reaches the end of the content.
alwaysBounceY	boolean	true	Determines whether bouncing always occurs when vertical scrolling reaches the end of the content.
onScroll	function	() => {}	Callback invoked when the content view scrolls.:({evt: PadEvent}) => void
onResize	function	() => {}	Callback invoked when the bounding view resize.:(size: Size) => void
onContentResize	function	() => {}	Callback invoked when the content view resize.:(size: Size) => void

Public Methods

scrollTo({ offset: Point, animated: boolean })

Sets the offset from the content view’s origin.

scrollToRect({ rect: Rect, align: Align, animated: boolean })

Scrolls a specific area of the content so that it is visible.

AutoResizing

AutoResizing automatically expands the size of the bounding view.

type Size = { width: number, height: number };

Prop Types

Property	Type	DefaultValue	Description
children	element,function	null	The render function passing computed width and height.:(size: Size) => element
width	number	null	The width of the content. If not specified, it expands the width of the bounding view.
height	number	null	The height of the content. If not specified, it expands the height of the bounding view.
onResize	function	() => {}	Callback invoked when the content resize.:(size: Size) => void

GeneralContent

GeneralContent automatically shrinks the size of the content.

type Size = { width: number, height: number };

Prop Types

Property	Type	DefaultValue	Description
width	number	null	The width of the content. If not specified, it shrinks the width of the content.
height	number	null	The height of the content. If not specified, it shrinks the height of the content.
onResize	function	() => {}	Callback invoked when the content resize.:(size: Size) => void

GridContent

GridContent displays data in multiple rows and columns with the same size.

type Size = { width: number, height: number };
type Rect = { x: number, y: number, width: number, height: number };
type LayoutAttrs = {
  itemIndex: number,
  rowIndex: number,
  columnIndex: number,
  rect: Rect,
  visibleRect: Rect,
};

Prop Types

Property	Type	DefaultValue	Description
direction	'x','y'	'y'	The direction of the grid.
width	number	0	The suggested width of the content.
height	number	0	The suggested height of the content.
rowSpacing	number	0	The minimum spacing to use between rows of items in the grid.
columnSpacing	number	0	The minimum spacing to use between columns of items in the grid.
itemCount	number	0	The number of items.
itemWidth	number	0	The width of the item.
itemHeight	number	0	The height of the item.
renderItem	function	() => null	The renderer of the item.:(attrs: LayoutAttrs) => element
visibleRect	Rect	{ x: 0, y: 0, width: 0, height: 0 }	The area of the visible content.
onResize	function	() => {}	Callback invoked when the content resize.:(size: Size) => void

Public Methods

getItemRect({ itemIndex: number, rowIndex: number, columnIndex: number })

Returns the area of item at the specified indexes.

ListContent

ListContent displays data in a single line of customizable items.

type Size = { width: number, height: number };
type Rect = { x: number, y: number, width: number, height: number };
type LayoutAttrs = {
  itemIndex: number,
  rect: Rect,
  visibleRect: Rect,
  Item: ItemContent,
};

Prop Types

Property	Type	DefaultValue	Description
direction	'x','y'	'y'	The direction of the list.
width	number	0	The suggested width of the content.
height	number	0	The suggested height of the content.
spacing	number	0	The minimum spacing to use between items in the list.
itemCount	number	0	The number of items.
estimatedItemWidth	number	0	The estimated width of the item.
estimatedItemHeight	number	0	The estimated height of the item.
renderItem	function	() => null	The renderer of the item.:(attrs: LayoutAttrs) => element
visibleRect	Rect	{ x: 0, y: 0, width: 0, height: 0 }	The area of the visible content.
onResize	function	() => {}	Callback invoked when the content resize.:(size: Size) => void

Public Methods

getItemRect({ itemIndex: number })

Returns the area of item at the specified index.

ItemContent

ItemContent fits the size of the content by hash.

type Size = { width: number, height: number };

Prop Types

Property	Type	DefaultValue	Description
width	number	null	The width of the content. If not specified, it shrinks the width of the content.
height	number	null	The width of the content. If not specified, it shrinks the width of the content.
hash	string	''	The hash of the content. if this property changes, the content size recalculates.
getSizeByHash	function	() => null	The content size getter by hash.:(hash: string) => Size
onResize	function	() => {}	Callback invoked when the content resize.:(size: Size, hash: string) => void

License

MIT License