/
keyboard.js
73 lines (73 loc) · 1.6 KB
/
keyboard.js
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
window.addEventListener('keydown', function (e) {
if (e.ctrlKey || e.altKey || e.metaKey) {
// Do not override browser/system shortcuts.
return;
}
switch (e.keyCode) {
case 27: // Esc =
case 67: // C = clear annotations
e.preventDefault();
clearCanvas();
break;
case 32: // Space =
case 75: // K = play/pause
e.preventDefault();
playPause();
break;
case 33: // PgUp =
case 38: // Up = speed up
e.preventDefault();
increaseSpeed();
break;
case 34: // PgDn =
case 40: // Down = speed down
e.preventDefault();
decreaseSpeed();
break;
case 37: // Left =
case 74: // J = rewind
e.preventDefault();
startRew();
document.getElementById('rew-btn').disabled = true;
break;
case 39: // Right =
case 76: // L = fast forward
e.preventDefault();
startFwd();
document.getElementById('fwd-btn').disabled = true;
break;
case 69: // E =
case 79: // O = ellipse (oval) tool
e.preventDefault();
setEllipseTool();
break;
case 82: // R = rectangle tool
e.preventDefault();
setRectTool();
break;
case 84: // T = toggle toolbar
e.preventDefault();
toggleToolbar();
break;
case 112: // F1 = show info. sheet
e.preventDefault();
showInfoSheet();
break;
}
}, false);
window.addEventListener('keyup', function (e) {
switch (e.keyCode) {
case 37: // Left
case 74: // J
e.preventDefault();
stopRew();
document.getElementById('rew-btn').disabled = false;
break;
case 39: // Right
case 76: // L
e.preventDefault();
stopFwd();
document.getElementById('fwd-btn').disabled = false;
break;
}
}, false);