Documentation
¶
Overview ¶
Package gesture implements common pointer gestures.
Gestures accept low level pointer Events from an event Queue and detect higher level actions such as clicks and scrolling.
Index ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
This section is empty.
Types ¶
type Click ¶
type Click struct {
// contains filtered or unexported fields
}
Click detects click gestures in the form of ClickEvents.
type ClickEvent ¶
type ClickEvent struct {
Kind ClickKind
Position image.Point
Source pointer.Source
Modifiers key.Modifiers
// NumClicks records successive clicks occurring
// within a short duration of each other.
NumClicks int
}
ClickEvent represent a click action, either a KindPress for the beginning of a click or a KindClick for a completed click.
func (ClickEvent) ImplementsEvent ¶
func (ClickEvent) ImplementsEvent()
type Drag ¶
type Drag struct {
// contains filtered or unexported fields
}
Drag detects drag gestures in the form of pointer.Drag events.
type Hover ¶
type Hover struct {
// contains filtered or unexported fields
}
Hover detects the hover gesture for a pointer area.
type Scroll ¶
type Scroll struct {
// contains filtered or unexported fields
}
Scroll detects scroll gestures and reduces them to scroll distances. Scroll recognizes mouse wheel movements as well as drag and fling touch gestures.
func (*Scroll) Add ¶
Add the handler to the operation list to receive scroll events. The bounds variable refers to the scrolling boundaries as defined in pointer.Filter.
type ScrollState ¶
type ScrollState uint8
const ( // StateIdle is the default scroll state. StateIdle ScrollState = iota // StateDragging is reported during drag gestures. StateDragging // StateFlinging is reported when a fling is // in progress. StateFlinging )
func (ScrollState) String ¶
func (s ScrollState) String() string
Source Files