Class: GesturePointList

OpenSeadragon.MouseTracker.GesturePointList

Provides an abstraction for a set of active GesturePoint objects for a given pointer device type. Active pointers are any pointer being tracked for this element which are in the hit-test area of the element (for hover-capable devices) and/or have contact or a button press initiated in the element.
Members Methods

Constructor

new GesturePointList(type)

Parameters:
Name Type Description
type String The pointer device type: "mouse", "touch", "pen", etc.
Source:

Members

buttons :Number

Current buttons pressed for the device. Combination of bit flags 0: none, 1: primary (or touch contact), 2: secondary, 4: aux (often middle), 8: X1 (often back), 16: X2 (often forward), 32: pen eraser.
Type:
  • Number
Source:

captureCount :Number

Current number of captured pointers for the device.
Type:
  • Number
Source:

clicks :Number

Current number of clicks for the device. Used for multiple click gesture tracking.
Type:
  • Number
Source:

contacts :Number

Current number of contact points (touch points, mouse down, etc.) for the device.
Type:
  • Number
Source:

type :String

The pointer device type: "mouse", "touch", "pen", etc.
Type:
  • String
Source:

Methods

add(gesturePoint) → {Number}

Parameters:
Name Type Description
gesturePoint OpenSeadragon.MouseTracker.GesturePoint A gesture point to add to the list.
Source:
Returns:
Number of gesture points in the list.
Type
Number

addContact()

Increment this pointer list's contact count. It will evaluate whether this pointer type is allowed to have multiple contacts.
Source:

asArray() → {Array.<OpenSeadragon.MouseTracker.GesturePoint>}

Source:
Returns:
The list of gesture points in the list as an array (read-only).
Type
Array.<OpenSeadragon.MouseTracker.GesturePoint>

getById(id) → {OpenSeadragon.MouseTracker.GesturePoint|null}

Parameters:
Name Type Description
id Number The id of the gesture point to retrieve from the list.
Source:
Returns:
The gesture point with the given id, or null if not found.
Type
OpenSeadragon.MouseTracker.GesturePoint | null

getByIndex(index) → {OpenSeadragon.MouseTracker.GesturePoint|null}

Parameters:
Name Type Description
index Number The index of the gesture point to retrieve from the list.
Source:
Returns:
The gesture point at the given index, or null if not found.
Type
OpenSeadragon.MouseTracker.GesturePoint | null

getLength() → {Number}

Source:
Returns:
Number of gesture points in the list.
Type
Number

getPrimary() → {OpenSeadragon.MouseTracker.GesturePoint|null}

Source:
Returns:
The primary gesture point in the list, or null if not found.
Type
OpenSeadragon.MouseTracker.GesturePoint | null

removeById(id) → {Number}

Parameters:
Name Type Description
id Number The id of the gesture point to remove from the list.
Source:
Returns:
Number of gesture points in the list.
Type
Number

removeContact()

Decrement this pointer list's contact count. It will make sure the count does not go below 0.
Source: