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
147
148
149
150
151
152
153
154
155
156
157
158
159
160
|
<!-- Copyright 2024 The Chromium Authors. All rights reserved.
-- Use of this source code is governed by a BSD-style license that can be
-- found in the LICENSE file.
-->
<html>
<title>ChromeOS Display Resolution Checker</title>
<style>
body, option, input {
font-family: "Sans-serif", Sans, serif;
font-size: large;
}
</style>
<body>
<h1>ChromeOS Display Resolution Checker</h1>
See <a href="http://go/cros-ppi-spectrum">CrOS PPI(PixelPerInch) Spectrum</a> for the definitive info.
<h2>Exmaple</h2>
<form>
<select id="examples" size="5" onchange="showExample()">
<option value="daisy">daisy</option>
<option value="minnie">minnie</option>
<option value="link/samus">link/samus</option>
<option value="peach-pit">peach-pit(FHD)</option>
<option value="yuna">yuna</option>
<option value="scarlet">scarlet</option>
<option value="krane">krane</option>
<option value="nocturne">noctrune</option>
<option value="kohaku">kohaku(4K)</option>
<option value="pantheon">pantheon(4K)</option>
<option value="chell">chell</option>
<option value="coachz">coachz</option>
</select> <br>
<hr>
<label for="width">Width:</label> <br>
<input type="text" id="width" name="width" value="0"/> <br>
<label for="height">Height:</label> <br>
<input type="text" id="height" name="height" value="0"/> <br>
<label for="size">Size:</label> <br>
<input type="text" id="size" name="size" value="10"/> <br>
<input type="button" value="Check" onclick="check()"> </input>
<hr>
<label for="dpi">DPI :</label> <label id="dpi"> </label> <br>
<label for="dsf">Scale factor :</label> <label id="dsf"> </label> <br>
<label for="dp-size">Size in dp :</label> <label id="dp-size"> </label> <br>
<label for="result">Result :</label> <label id="result"> </label> <br>
</form>
</body>
<script>
function showExample() {
// Example panels used by devices [size in inch, [width, height]].
const kExamples = {
"daisy" : [11.6, [1366, 768]],
"minnie" : [10.1, [1280, 800]],
"link/samus" : [12.85, [2560, 1700]],
"peach-pit" : [13.3, [1920, 1080]],
"yuna" : [15.6, [1920, 1080]],
"kevin/caroline" : [12.3, [2400, 1600]],
"eve" : [12.3, [2400, 1600]],
"scarlet" : [9.7, [1536, 2048]],
"krane" : [10.1, [1920, 1200]],
"nocturne" : [12.3, [3000, 2000]],
"kohaku" : [13.1, [3840, 2160]],
"pantheon" : [15.6, [3840, 2160]],
"chell" : [13.3, [3200, 1800]],
"coachz" : [11.0, [2160, 1440]],
};
var selected = document.getElementById('examples').value;
var selectedItem = kExamples[selected];
document.getElementById('width').value = selectedItem[1][0];
document.getElementById('height').value = selectedItem[1][1];
document.getElementById('size').value = selectedItem[0];
check();
}
function findScaleFactor(dpi, width, height) {
class Result {
constructor(dsf, isException) {
this.dsf = dsf;
this.isException = isException;
}
};
// TODO: These data should be shared with C++ code via json file.
// The list of panel that has special dsf.
const kExceptionPanelTable = [
[3000, 2000, (3000.0 / 1332.0)], // Nocturne
[3200, 1800, 2.0], // Chell
[2160, 1440, 1.8] // Coachz
];
const kDpiToDsfTable = [
[310, 3840.0 / 1440.0],
[270, 2.4],
[230, 2.0],
[220, 1920.0 / 1080.0],
[180, 1.6],
[150, 1.25],
[0.0, 1.0]
];
for (var i = 0; i < kExceptionPanelTable.length; i++) {
var panel = kExceptionPanelTable[i];
if (panel[0] == width && panel[1] == height) {
return new Result(panel[2], /*isException=*/true);
}
}
for (var i = 0; i < kDpiToDsfTable.length; i++) {
if (dpi >= kDpiToDsfTable[i][0]) {
return new Result(kDpiToDsfTable[i][1], false);
}
}
return new Result(1, false);
}
function setResult(text, color) {
var element = document.getElementById('result');
element.innerText = text;
element.style.color = color;
}
function findRange(dpi) {
const ideal = [[155, 165], [200, 210], [225, 265], [270, 350]];
const ok = [[125, 155], [180, 200], [220, 225]];
found = ideal.find(element => element[0] <= dpi && dpi < element[1]);
if (found) {
setResult('Ideal', '#00Af00');
return;
}
found = ok.find(element => element[0] <= dpi && dpi < element[1]);
if (found) {
setResult('OK', '#000000');
return;
}
setResult('Not OK - out of good range. Please contact chromeos-wmp@google.com for assistance',
'#ff0000');
}
function check() {
var width = parseInt(document.getElementById('width').value);
var height = parseInt(document.getElementById('height').value);
var size = parseFloat(document.getElementById('size').value);
var dpi = Math.sqrt(width * width + height * height) / size;
var dsf_info = findScaleFactor(dpi, width, height);
var dsf = dsf_info.dsf;
document.getElementById('dpi').innerText = dpi;
document.getElementById('dsf').innerText = dsf;
var dp_width = (width / dsf);
var dp_height = (height / dsf);
document.getElementById('dp-size').innerHTML = dp_width + 'x' + dp_height;
if (dsf_info.isException) {
setResult('OK but exception panel. Please contact chromeos-wmp@google.com for assistance', '#CCAA00');
} else if ((Math.round(dp_width) - dp_width) != 0 ||
(Math.round(dp_height) - dp_height) != 0) {
setResult('Not OK - fractional dp size. Please contact chromeos-wmp@google.com for assistance', '#ff0000');
} else {
findRange(dpi);
}
}
</script>
</html>
|
