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
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
|
import qs.config
import QtQuick
import QtQuick.Controls
BusyIndicator {
id: root
property real implicitSize: Appearance.font.size.normal * 3
property real strokeWidth: Appearance.padding.small
property real internalStrokeWidth: strokeWidth
property string animState
padding: 0
implicitWidth: implicitSize
implicitHeight: implicitSize
onRunningChanged: {
if (running) {
updater.completeEndProgress = 0;
animState = "running";
} else {
if (animState == "running")
animState = "completing";
}
}
states: State {
name: "stopped"
when: !root.running
PropertyChanges {
root.opacity: 0
root.internalStrokeWidth: root.strokeWidth / 3
}
}
transitions: Transition {
NumberAnimation {
properties: "opacity,internalStrokeWidth"
duration: updater.completeEndDuration
easing.type: Easing.BezierSpline
easing.bezierCurve: Appearance.anim.curves.standard
}
}
background: null
contentItem: CircularProgress {
anchors.fill: parent
strokeWidth: root.internalStrokeWidth
padding: root.padding
startAngle: updater.startFraction * 360
value: updater.endFraction - updater.startFraction
}
Updater {
id: updater
}
NumberAnimation {
running: root.animState !== "stopped"
loops: Animation.Infinite
target: updater
property: "progress"
from: 0
to: 1
duration: updater.duration
}
NumberAnimation {
running: root.animState === "completing"
target: updater
property: "completeEndProgress"
from: 0
to: 1
duration: updater.completeEndDuration
onFinished: {
if (root.animState === "completing")
root.animState = "stopped";
}
}
component Updater: QtObject {
readonly property int duration: 5400 * Appearance.anim.durations.scale
readonly property int expandDuration: 667 * Appearance.anim.durations.scale
readonly property int collapseDuration: 667 * Appearance.anim.durations.scale
readonly property int completeEndDuration: 333 * Appearance.anim.durations.scale
readonly property int tailDegOffset: -20
readonly property int extraDegPerCycle: 250
readonly property int constantRotDeg: 1520
readonly property list<int> expandDelay: [0, 1350, 2700, 4050].map(d => d * Appearance.anim.durations.scale)
readonly property list<int> collapseDelay: [667, 2017, 3367, 4717].map(d => d * Appearance.anim.durations.scale)
property real progress: 0
property real startFraction: 0
property real endFraction: 0
property real rotation: 0
property real completeEndProgress: 0
onProgressChanged: update(progress)
function update(p: real): void {
const playtime = p * duration;
let startDeg = constantRotDeg * p + tailDegOffset;
let endDeg = constantRotDeg * p;
for (let i = 0; i < 4; i++) {
const expandFraction = getFractionInRange(playtime, expandDelay[i], expandDuration);
endDeg += fastOutSlowIn(expandFraction) * extraDegPerCycle;
const collapseFraction = getFractionInRange(playtime, collapseDelay[i], collapseDuration);
startDeg += fastOutSlowIn(collapseFraction) * extraDegPerCycle;
}
// Gap closing
startDeg += (endDeg - startDeg) * completeEndProgress;
startFraction = startDeg / 360;
endFraction = endDeg / 360;
}
function getFractionInRange(currentTime: real, delay: int, duration: int): real {
if (currentTime < delay)
return 0;
if (currentTime > delay + duration)
return 1;
return (currentTime - delay) / duration;
}
function lerp(a: real, b: real, t: real): real {
return a + (b - a) * t;
}
function cubic(a: real, b: real, c: real, d: real, t: real): real {
return ((1 - t) ** 3) * a + 3 * ((1 - t) ** 2) * t * b + 3 * (1 - t) * (t ** 2) * c + (t ** 3) * d;
}
function cubicBezier(p1x: real, p1y: real, p2x: real, p2y: real, t: real): real {
return cubic(0, p1y, p2y, 1, t);
}
function fastOutSlowIn(t: real): real {
return cubicBezier(0.4, 0.0, 0.2, 1.0, t);
}
}
}
|
