Symbian3/PDK/Source/GUID-17C64C2F-9426-4B41-9F0A-23060289D644.dita
changeset 5 f345bda72bc4
child 9 59758314f811
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Symbian3/PDK/Source/GUID-17C64C2F-9426-4B41-9F0A-23060289D644.dita	Tue Mar 30 11:56:28 2010 +0100
@@ -0,0 +1,80 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
+<!-- This component and the accompanying materials are made available under the terms of the License 
+"Eclipse Public License v1.0" which accompanies this distribution, 
+and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
+<!-- Initial Contributors:
+    Nokia Corporation - initial contribution.
+Contributors: 
+-->
+<!DOCTYPE concept
+  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
+<concept id="GUID-17C64C2F-9426-4B41-9F0A-23060289D644" xml:lang="en"><title>Multi-touch</title><prolog><metadata><keywords/></metadata></prolog><conbody>
+<p>Multi-touch is an enhancement to the touch screen, which provides the user
+with the ability to apply elaborate finger gestures onto the display as commands
+to the device.</p>
+<p>Multi-touch is implemented based on the size and type of interfaces. When
+a finger or an object touches the display causing the light to scatter, the
+reflection is caught by the sensors. The response for the touch is sent back
+based on the type of reflection measured.</p>
+<p>Only the devices with multi-touch support have 'Pinch Stroke' as a touch
+stroke.</p>
+<section id="GUID-7AECBBDD-8583-4555-A2F3-83404CBC64C1"><title>Pinch Stroke</title>Pinch
+stroke is invoked by two separate but simultaneously active touch down events
+and dragging movements along the line that goes through both touch down points.
+On release, the pinch in or pinch out state is maintained. Pinch stroke can
+be utilized, for example, in Photo viewer to zoom in and zoom out.<fig id="GUID-93C93C51-1F0D-4ADE-8FEC-3223B9C9F60B">
+<image href="GUID-22498580-E902-4024-921C-F756A8CD58DF_d0e103503_href.png" placement="inline"/>
+</fig><p>The following table lists the default touch-events for pinch-stroke:</p><table id="GUID-D5917E40-42B1-461B-8722-C7AD66482078-GENID-1-10-1-6-1-1-6-2-1-5-1-1-7-1-2-4-4"><title>Default touch events
+for pinch-stroke</title>
+<tgroup cols="3"><colspec colname="col1" colwidth="0.68*"/><colspec colname="col2" colwidth="1.00*"/><colspec colname="col3" colwidth="1.32*"/>
+<thead>
+<row>
+<entry valign="top"><p>User action</p></entry>
+<entry valign="top"><p>State change</p></entry>
+<entry valign="top"><p>Feedback</p></entry>
+</row>
+</thead>
+<tbody>
+<row>
+<entry><p>First touch down</p></entry>
+<entry><p>No action.</p></entry>
+<entry><p>Tactile: <ul>
+<li><p>First touch down tactile feedback follows the context-based feedback. </p></li>
+<li><p>Audio feedback is provided with touch down.</p></li>
+</ul></p></entry>
+</row>
+<row>
+<entry><p>Second simultaneous touch down</p></entry>
+<entry><p>Activates multi-touch mode for the content defined.</p></entry>
+<entry><p>Tactile: <ul>
+<li><p>When second finger is touched down multi-touch recognition, two sensitive
+pulses effect is provided.</p></li>
+<li><p>Audio feedback is provided with touch down.</p></li>
+</ul></p></entry>
+</row>
+<row>
+<entry><p>Pinch in</p></entry>
+<entry><p>Moving the touch points (directly) closer to each other is recognized
+as pinch in. Application can use it, for example, for zooming out a picture.
+The behavior should be in relation to the speed and size of the stroke.</p></entry>
+<entry><p>Tactile: Smooth pinch effect is provided while moving the fingers. </p><p>No
+audio feedback is provided.</p></entry>
+</row>
+<row>
+<entry><p>Pinch out</p></entry>
+<entry><p>Moving the touch points (directly) away from each other is recognized
+as pinch out. Application can use it, for example, for zooming in a picture.
+The behavior should be in relation to the speed and size of the stroke.</p></entry>
+<entry><p>Tactile: Smooth pinch effect is provided while moving the fingers. </p><p>No
+audio feedback is provided.</p></entry>
+</row>
+<row>
+<entry><p>Touch release</p></entry>
+<entry><p>Releasing one or both fingers stops the pinch.</p></entry>
+<entry><p>No tactile or audio feedback given.</p></entry>
+</row>
+</tbody>
+</tgroup>
+</table></section>
+</conbody></concept>
\ No newline at end of file