| author | Eugene Ostroukhov <eugeneo@symbian.org> |
| Mon, 08 Mar 2010 09:24:25 -0800 | |
| changeset 232 | 22c09a3753c1 |
| parent 229 | 716254ccbcc0 |
| permissions | -rw-r--r-- |
|
229
716254ccbcc0
Fixed 2046: WRTKit help topics. Fixed 2170: Added support for Web Developer Library. Fixed 1952: Event Trigger icons unreadable
tasneems@symbian.org
parents:
diff
changeset
|
1 |
|
|
716254ccbcc0
Fixed 2046: WRTKit help topics. Fixed 2170: Added support for Web Developer Library. Fixed 1952: Event Trigger icons unreadable
tasneems@symbian.org
parents:
diff
changeset
|
2 |
<!DOCTYPE html |
|
716254ccbcc0
Fixed 2046: WRTKit help topics. Fixed 2170: Added support for Web Developer Library. Fixed 1952: Event Trigger icons unreadable
tasneems@symbian.org
parents:
diff
changeset
|
3 |
PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> |
|
716254ccbcc0
Fixed 2046: WRTKit help topics. Fixed 2170: Added support for Web Developer Library. Fixed 1952: Event Trigger icons unreadable
tasneems@symbian.org
parents:
diff
changeset
|
4 |
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"/><meta name="copyright" content="(C) Copyright 2009"/><meta name="DC.rights.owner" content="(C) Copyright 2009"/><meta name="DC.Type" content="concept"/><meta name="DC.Title" content="Checking for touch support"/><meta name="abstract" content="The Web Runtime (WRT) API does not provide a way to detect whether a device is touch-enabled. You can use simple but error-prone heuristics to detect it."/><meta name="description" content="The Web Runtime (WRT) API does not provide a way to detect whether a device is touch-enabled. You can use simple but error-prone heuristics to detect it."/><meta name="DC.Relation" scheme="URI" content="GUID-04ABC9FC-26FE-4854-9F88-63A2C4911886"/><meta name="DC.Relation" scheme="URI" content="GUID-13E2DE63-47E5-4E2A-85FF-C8B0CAB9D4DE"/><meta name="DC.Relation" scheme="URI" content="GUID-D54DEFE7-E878-4530-B707-A5388DFE1D9D"/><meta name="DC.Relation" scheme="URI" content="GUID-6DD2B3D2-BA3B-4936-BBC9-F61B6757B6F8"/><meta name="DC.Format" content="XHTML"/><meta name="DC.Identifier" content="GUID-AE9BB3E0-C243-476B-A236-40958A1DAED9"/><meta name="DC.Language" content="en"/><title>Checking for touch support </title><script type="text/javascript"> |
|
716254ccbcc0
Fixed 2046: WRTKit help topics. Fixed 2170: Added support for Web Developer Library. Fixed 1952: Event Trigger icons unreadable
tasneems@symbian.org
parents:
diff
changeset
|
5 |
function initPage() {}
|
|
716254ccbcc0
Fixed 2046: WRTKit help topics. Fixed 2170: Added support for Web Developer Library. Fixed 1952: Event Trigger icons unreadable
tasneems@symbian.org
parents:
diff
changeset
|
6 |
</script><link href="../PRODUCT_PLUGIN/book.css" rel="stylesheet" type="text/css"/><link href="css/s60/style.css" rel="stylesheet" type="text/css" media="all"/></head><body onload="initPage();"><div class="body"><div class="contentLeft prTxt"><h1 class="pageHeading" id="GUID-AE9BB3E0-C243-476B-A236-40958A1DAED9">Checking for touch support</h1><div><p>The Web Runtime (WRT) API does not provide a way to detect whether a device is touch-enabled. You can use simple but error-prone heuristics to detect it.</p> |
|
716254ccbcc0
Fixed 2046: WRTKit help topics. Fixed 2170: Added support for Web Developer Library. Fixed 1952: Event Trigger icons unreadable
tasneems@symbian.org
parents:
diff
changeset
|
7 |
<p>The first S60 touch UI devices have bigger screen resolution than older devices. Therefore, if the queried screen resolution is 360 x 640 (or 640 x 360 in landscape orientation), you can assume that touch UI is supported. On devices that support WRT 1.1, you can use the<code> DisplayResolution</code> attribute of the <a href="GUID-279A3698-D09B-44BF-8340-739E19F94727.html#GUID-279A3698-D09B-44BF-8340-739E19F94727"><code>ISysInfo.GetInfo()</code></a> method to determine screen resolution.</p> |
|
716254ccbcc0
Fixed 2046: WRTKit help topics. Fixed 2170: Added support for Web Developer Library. Fixed 1952: Event Trigger icons unreadable
tasneems@symbian.org
parents:
diff
changeset
|
8 |
<p>You can also use the screen width and height attributes to determine screen resolution:</p> |
|
716254ccbcc0
Fixed 2046: WRTKit help topics. Fixed 2170: Added support for Web Developer Library. Fixed 1952: Event Trigger icons unreadable
tasneems@symbian.org
parents:
diff
changeset
|
9 |
<pre class="codeblock">// Identifies the device by querying its resolution |
|
716254ccbcc0
Fixed 2046: WRTKit help topics. Fixed 2170: Added support for Web Developer Library. Fixed 1952: Event Trigger icons unreadable
tasneems@symbian.org
parents:
diff
changeset
|
10 |
function detectResolution() {
|
|
716254ccbcc0
Fixed 2046: WRTKit help topics. Fixed 2170: Added support for Web Developer Library. Fixed 1952: Event Trigger icons unreadable
tasneems@symbian.org
parents:
diff
changeset
|
11 |
var screenWidth = screen.width; |
|
716254ccbcc0
Fixed 2046: WRTKit help topics. Fixed 2170: Added support for Web Developer Library. Fixed 1952: Event Trigger icons unreadable
tasneems@symbian.org
parents:
diff
changeset
|
12 |
var screenHeight = screen.height; |
|
716254ccbcc0
Fixed 2046: WRTKit help topics. Fixed 2170: Added support for Web Developer Library. Fixed 1952: Event Trigger icons unreadable
tasneems@symbian.org
parents:
diff
changeset
|
13 |
|
|
716254ccbcc0
Fixed 2046: WRTKit help topics. Fixed 2170: Added support for Web Developer Library. Fixed 1952: Event Trigger icons unreadable
tasneems@symbian.org
parents:
diff
changeset
|
14 |
if (screenWidth == 240 && screenHeight == 320) {
|
|
716254ccbcc0
Fixed 2046: WRTKit help topics. Fixed 2170: Added support for Web Developer Library. Fixed 1952: Event Trigger icons unreadable
tasneems@symbian.org
parents:
diff
changeset
|
15 |
resolution = RESOLUTION_QVGA_PORTRAIT; |
|
716254ccbcc0
Fixed 2046: WRTKit help topics. Fixed 2170: Added support for Web Developer Library. Fixed 1952: Event Trigger icons unreadable
tasneems@symbian.org
parents:
diff
changeset
|
16 |
} else if (screenWidth == 320 && screenHeight == 240) {
|
|
716254ccbcc0
Fixed 2046: WRTKit help topics. Fixed 2170: Added support for Web Developer Library. Fixed 1952: Event Trigger icons unreadable
tasneems@symbian.org
parents:
diff
changeset
|
17 |
resolution = RESOLUTION_QVGA_LANDSCAPE; |
|
716254ccbcc0
Fixed 2046: WRTKit help topics. Fixed 2170: Added support for Web Developer Library. Fixed 1952: Event Trigger icons unreadable
tasneems@symbian.org
parents:
diff
changeset
|
18 |
} else if (screenWidth == 360 && screenHeight == 640) {
|
|
716254ccbcc0
Fixed 2046: WRTKit help topics. Fixed 2170: Added support for Web Developer Library. Fixed 1952: Event Trigger icons unreadable
tasneems@symbian.org
parents:
diff
changeset
|
19 |
resolution = RESOLUTION_NHD_PORTRAIT; |
|
716254ccbcc0
Fixed 2046: WRTKit help topics. Fixed 2170: Added support for Web Developer Library. Fixed 1952: Event Trigger icons unreadable
tasneems@symbian.org
parents:
diff
changeset
|
20 |
} else if (screenWidth == 640 && screenHeight == 360) {
|
|
716254ccbcc0
Fixed 2046: WRTKit help topics. Fixed 2170: Added support for Web Developer Library. Fixed 1952: Event Trigger icons unreadable
tasneems@symbian.org
parents:
diff
changeset
|
21 |
resolution = RESOLUTION_NHD_LANDSCAPE; |
|
716254ccbcc0
Fixed 2046: WRTKit help topics. Fixed 2170: Added support for Web Developer Library. Fixed 1952: Event Trigger icons unreadable
tasneems@symbian.org
parents:
diff
changeset
|
22 |
} else if (screenWidth == 800 && screenHeight == 352) {
|
|
716254ccbcc0
Fixed 2046: WRTKit help topics. Fixed 2170: Added support for Web Developer Library. Fixed 1952: Event Trigger icons unreadable
tasneems@symbian.org
parents:
diff
changeset
|
23 |
resolution = RESOLUTION_E90_LANDSCAPE; |
|
716254ccbcc0
Fixed 2046: WRTKit help topics. Fixed 2170: Added support for Web Developer Library. Fixed 1952: Event Trigger icons unreadable
tasneems@symbian.org
parents:
diff
changeset
|
24 |
} else {
|
|
716254ccbcc0
Fixed 2046: WRTKit help topics. Fixed 2170: Added support for Web Developer Library. Fixed 1952: Event Trigger icons unreadable
tasneems@symbian.org
parents:
diff
changeset
|
25 |
resolution = RESOLUTION_UNDEFINED; |
|
716254ccbcc0
Fixed 2046: WRTKit help topics. Fixed 2170: Added support for Web Developer Library. Fixed 1952: Event Trigger icons unreadable
tasneems@symbian.org
parents:
diff
changeset
|
26 |
} |
|
716254ccbcc0
Fixed 2046: WRTKit help topics. Fixed 2170: Added support for Web Developer Library. Fixed 1952: Event Trigger icons unreadable
tasneems@symbian.org
parents:
diff
changeset
|
27 |
} |
|
716254ccbcc0
Fixed 2046: WRTKit help topics. Fixed 2170: Added support for Web Developer Library. Fixed 1952: Event Trigger icons unreadable
tasneems@symbian.org
parents:
diff
changeset
|
28 |
|
|
716254ccbcc0
Fixed 2046: WRTKit help topics. Fixed 2170: Added support for Web Developer Library. Fixed 1952: Event Trigger icons unreadable
tasneems@symbian.org
parents:
diff
changeset
|
29 |
// Detects whether touch UI is supported |
|
716254ccbcc0
Fixed 2046: WRTKit help topics. Fixed 2170: Added support for Web Developer Library. Fixed 1952: Event Trigger icons unreadable
tasneems@symbian.org
parents:
diff
changeset
|
30 |
function detectTouchUI() {
|
|
716254ccbcc0
Fixed 2046: WRTKit help topics. Fixed 2170: Added support for Web Developer Library. Fixed 1952: Event Trigger icons unreadable
tasneems@symbian.org
parents:
diff
changeset
|
31 |
// Query the device resolution to determine whether this is a touch device. |
|
716254ccbcc0
Fixed 2046: WRTKit help topics. Fixed 2170: Added support for Web Developer Library. Fixed 1952: Event Trigger icons unreadable
tasneems@symbian.org
parents:
diff
changeset
|
32 |
if (resolution == RESOLUTION_NHD_LANDSCAPE || |
|
716254ccbcc0
Fixed 2046: WRTKit help topics. Fixed 2170: Added support for Web Developer Library. Fixed 1952: Event Trigger icons unreadable
tasneems@symbian.org
parents:
diff
changeset
|
33 |
resolution == RESOLUTION_NHD_PORTRAIT) {
|
|
716254ccbcc0
Fixed 2046: WRTKit help topics. Fixed 2170: Added support for Web Developer Library. Fixed 1952: Event Trigger icons unreadable
tasneems@symbian.org
parents:
diff
changeset
|
34 |
touchSupported = true; |
|
716254ccbcc0
Fixed 2046: WRTKit help topics. Fixed 2170: Added support for Web Developer Library. Fixed 1952: Event Trigger icons unreadable
tasneems@symbian.org
parents:
diff
changeset
|
35 |
} else {
|
|
716254ccbcc0
Fixed 2046: WRTKit help topics. Fixed 2170: Added support for Web Developer Library. Fixed 1952: Event Trigger icons unreadable
tasneems@symbian.org
parents:
diff
changeset
|
36 |
touchSupported = false; |
|
716254ccbcc0
Fixed 2046: WRTKit help topics. Fixed 2170: Added support for Web Developer Library. Fixed 1952: Event Trigger icons unreadable
tasneems@symbian.org
parents:
diff
changeset
|
37 |
} |
|
716254ccbcc0
Fixed 2046: WRTKit help topics. Fixed 2170: Added support for Web Developer Library. Fixed 1952: Event Trigger icons unreadable
tasneems@symbian.org
parents:
diff
changeset
|
38 |
} |
|
716254ccbcc0
Fixed 2046: WRTKit help topics. Fixed 2170: Added support for Web Developer Library. Fixed 1952: Event Trigger icons unreadable
tasneems@symbian.org
parents:
diff
changeset
|
39 |
</pre> |
|
716254ccbcc0
Fixed 2046: WRTKit help topics. Fixed 2170: Added support for Web Developer Library. Fixed 1952: Event Trigger icons unreadable
tasneems@symbian.org
parents:
diff
changeset
|
40 |
</div></div></div><div class="footer"><hr/><div class="copy">© Nokia 2009.</div></div></body></html> |