1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
package ui
// A simple structure to detect if the cursor has not moved or started moving again.
// hoverDetector.update must be called during each Update invocation to track the
// frame and the current cursor position.
type _hoverDetector struct {
last_x, last_y int
ticks int
threshold int
}
var (
hoverDetector = _hoverDetector{threshold: 60}
longtapHoverDetector = _longtapHoverDetector{}
)
func (h *_hoverDetector) update(x, y int) (ev InputEvent, ch bool) {
if x == h.last_x && y == h.last_y {
h.ticks = h.ticks + 1
if h.ticks == h.threshold {
return InputEvent{HoverStart, x, y, nil}, true
}
} else {
if h.ticks > h.threshold {
ev = InputEvent{HoverEnd, h.last_x, h.last_y, nil}
ch = true
}
h.ticks = 0
h.last_x, h.last_y = x, y
}
return
}
type _longtapHoverDetector struct {
active *longtap
}
func (h *_longtapHoverDetector) update(longtap *longtap) (ev InputEvent, ch bool) {
if longtap != nil && h.active == nil {
h.active = longtap
return InputEvent{HoverStart, longtap.x, longtap.y, nil}, true
}
return InputEvent{}, false
}
func (h *_longtapHoverDetector) reset() (ev InputEvent, ch bool) {
if h.active != nil {
ev := InputEvent{HoverEnd, h.active.x, h.active.y, nil}
h.active = nil
return ev, true
}
return InputEvent{}, false
}
|
