author | Dominic Pinkman <Dominic.Pinkman@Nokia.com> |
Thu, 21 Jan 2010 18:18:20 +0000 | |
changeset 0 | 89d6a7a84779 |
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<?xml version="1.0" encoding="utf-8"?> |
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<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. --> |
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<!-- This component and the accompanying materials are made available under the terms of the License |
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"Eclipse Public License v1.0" which accompanies this distribution, |
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and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". --> |
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<!-- Initial Contributors: |
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Nokia Corporation - initial contribution. |
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Initial contribution of Documentation_content according to Feature bug 1266 bug 1268 bug 1269 bug 1270 bug 1372 bug 1374 bug 1375 bug 1379 bug 1380 bug 1381 bug 1382 bug 1383 bug 1385
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Contributors: |
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--> |
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Initial contribution of Documentation_content according to Feature bug 1266 bug 1268 bug 1269 bug 1270 bug 1372 bug 1374 bug 1375 bug 1379 bug 1380 bug 1381 bug 1382 bug 1383 bug 1385
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<!DOCTYPE concept |
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PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd"> |
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<concept id="GUID-D3F52BB9-7230-499C-9BB7-CFAEDBA8F48B" xml:lang="en"><title>Managing |
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feedback areas</title><prolog><metadata><keywords/></metadata></prolog><conbody> |
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<p>Usually control areas (and hence feedback areas) should not overlap. However, |
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in some cases you may have to define a priority for the feedback areas. </p> |
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<p>Consider, for example, situations where a compound control has a simple |
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control inside its own area as illustrated in the figure below.</p> |
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<fig id="GUID-C70125A6-393A-428D-A22B-7F6EEC72FAAF"> |
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<title>Tactile feedback area priorities</title> |
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<image href="GUID-5BD8EE4B-3149-4331-91E0-7813DF4994E1_d0e51823_href.png" scale="70" placement="inline"/> |
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</fig> |
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<p>In both situations, the compound control wants to give one type of feedback, |
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Initial contribution of Documentation_content according to Feature bug 1266 bug 1268 bug 1269 bug 1270 bug 1372 bug 1374 bug 1375 bug 1379 bug 1380 bug 1381 bug 1382 bug 1383 bug 1385
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but there should be a different type of feedback (or no feedback at all) for |
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the simple control. Both controls can register themselves to area registry, |
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Initial contribution of Documentation_content according to Feature bug 1266 bug 1268 bug 1269 bug 1270 bug 1372 bug 1374 bug 1375 bug 1379 bug 1380 bug 1381 bug 1382 bug 1383 bug 1385
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
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but the problem is making sure that simple control has a higher priority than |
89d6a7a84779
Initial contribution of Documentation_content according to Feature bug 1266 bug 1268 bug 1269 bug 1270 bug 1372 bug 1374 bug 1375 bug 1379 bug 1380 bug 1381 bug 1382 bug 1383 bug 1385
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
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the compound control (in the API implementation hit tests are only run as |
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Initial contribution of Documentation_content according to Feature bug 1266 bug 1268 bug 1269 bug 1270 bug 1372 bug 1374 bug 1375 bug 1379 bug 1380 bug 1381 bug 1382 bug 1383 bug 1385
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
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long as one control with matching area and pointer event type is found).</p> |
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<p>You can solve this in two ways:<ol> |
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<li id="GUID-7AE53987-EF45-4222-8D34-D48413091BC8">By adding the simple control |
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to area registry after compound control (the last added area always has the |
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highest priority inside its window).</li> |
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<li id="GUID-128E8207-1B69-4FC5-9E4B-A42A259C60E5">By using the <xref href="jar:GUID-759FBC7F-5384-4487-8457-A8D4B76F6AA6.jar!/html/classMTouchFeedback.html#a3fe25a09d2df942b13f626b627cb9e3" format="application/java-archive"><codeph>MoveFeedbackAreaToFirstPriority</codeph></xref> function for moving |
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the simple control to first priority.</li> |
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</ol></p> |
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<p>In many cases the first option is most natural choice, but you can also |
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use the second option in case the situation changes after the areas have been |
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already added to the area registry.</p> |
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<note><p>The priority order will only remain as long as the next area is added |
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to the registry, i.e. moving some area to first priority will only keep it |
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as the top priority area as long as the next area is added to the registry. |
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(Registry entries of one window are kept in a stack, and new areas are always |
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added on top.)</p></note> |
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</conbody></concept> |