author | Dominic Pinkman <dominic.pinkman@nokia.com> |
Fri, 11 Jun 2010 12:39:03 +0100 | |
changeset 8 | ae94777fff8f |
parent 7 | 51a74ef9ed63 |
permissions | -rw-r--r-- |
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ae94777fff8f
Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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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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Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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<!-- This component and the accompanying materials are made available under the terms of the License |
ae94777fff8f
Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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"Eclipse Public License v1.0" which accompanies this distribution, |
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Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". --> |
ae94777fff8f
Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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<!-- Initial Contributors: |
ae94777fff8f
Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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Nokia Corporation - initial contribution. |
ae94777fff8f
Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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Contributors: |
ae94777fff8f
Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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--> |
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Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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<!DOCTYPE concept |
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Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd"> |
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Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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<concept id="GUID-33D93E96-98A9-4116-9028-3241D76A1036" xml:lang="en"><title>Enabling additional touch events for your application</title><shortdesc>The Symbian platform provides additional touch events to |
ae94777fff8f
Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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enable drag events and to specify screen areas for touch events.</shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody> |
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Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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<p>By default, the Symbian platform sends only <parmname>EButton1Up</parmname> and <parmname>EButton1Down</parmname> touch events to applications.</p> |
ae94777fff8f
Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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<p>If you want to enable <parmname>EDrag</parmname> touch events, |
ae94777fff8f
Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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implement <xref href="GUID-B06F99BD-F032-3B87-AB26-5DD6EBE8C160.dita#GUID-B06F99BD-F032-3B87-AB26-5DD6EBE8C160/GUID-66B1D0C0-BFBB-36DB-BCC2-5563895251D5"><apiname>CCoeControl::EnableDragEvents()</apiname></xref> in your |
ae94777fff8f
Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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container class.</p> |
ae94777fff8f
Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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<p>When the mobile device user drags the stylus on the screen, <xref href="GUID-1FFA0073-3D83-388E-A824-08C31F90CC54.dita#GUID-1FFA0073-3D83-388E-A824-08C31F90CC54/GUID-5375D595-CF6A-38F6-9D62-E8DDF2D2BCF6"><apiname>TPointerEvent::EDrag()</apiname></xref> events are sent. When dragging stops, |
ae94777fff8f
Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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the application receives the event <xref href="GUID-1FFA0073-3D83-388E-A824-08C31F90CC54.dita#GUID-1FFA0073-3D83-388E-A824-08C31F90CC54/GUID-5BADE607-E845-34B2-9C2D-B6882B7D4288"><apiname>TPointerEvent::EButton1Up()</apiname></xref>.</p> |
ae94777fff8f
Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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<codeblock xml:space="preserve">void CTableauControl::ConstructL( const TRect& aRect ) |
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{ |
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// This is parent window |
ae94777fff8f
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CreateWindowL(); |
ae94777fff8f
Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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ae94777fff8f
Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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EnableDragEvents(); |
ae94777fff8f
Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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ae94777fff8f
Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
Dominic Pinkman <dominic.pinkman@nokia.com>
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SetRect( aRect ); |
ae94777fff8f
Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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SetExtentToWholeScreen(); |
ae94777fff8f
Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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ae94777fff8f
Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
Dominic Pinkman <dominic.pinkman@nokia.com>
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ae94777fff8f
Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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// Initialize component array |
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InitComponentArrayL(); |
ae94777fff8f
Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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ae94777fff8f
Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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//Implement your own logic here |
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ActivateL(); |
ae94777fff8f
Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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}</codeblock> |
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<p>It is enough that the container control set <codeph>EnableDragEvents()</codeph> in its construction. <codeph>EnableDragEvents()</codeph> need not |
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be set again for the child controls to receive dragging events.</p> |
ae94777fff8f
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<section id="GUID-7B30F0D5-1EAE-4F40-B04F-6A3953BCC634"><title>Controlling |
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which control receives a touch event</title><p>Particularly when you |
ae94777fff8f
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are receiving drag events it may be that an object in the window may |
ae94777fff8f
Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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be drawn by one control, while the pointer is over another control. |
ae94777fff8f
Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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In cases where you want to ensure that pointer events are received |
ae94777fff8f
Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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by the intended control, implement <xref href="GUID-B06F99BD-F032-3B87-AB26-5DD6EBE8C160.dita#GUID-B06F99BD-F032-3B87-AB26-5DD6EBE8C160/GUID-172FDC09-7870-3FD0-9252-340178C58C28"><apiname>CCoeControl::SetPointerCapture()</apiname></xref>.</p><p>When a control receives a <xref href="GUID-1FFA0073-3D83-388E-A824-08C31F90CC54.dita#GUID-1FFA0073-3D83-388E-A824-08C31F90CC54/GUID-26CE2524-04BC-3592-A7E5-7EEC792A466E"><apiname>TPointerEvent::EButton1Down()</apiname></xref> event, all events will be sent to this control until the next <xref href="GUID-1FFA0073-3D83-388E-A824-08C31F90CC54.dita#GUID-1FFA0073-3D83-388E-A824-08C31F90CC54/GUID-5BADE607-E845-34B2-9C2D-B6882B7D4288"><apiname>TPointerEvent::EButton1Up()</apiname></xref> event. If you want to have |
ae94777fff8f
Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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events to be sent to another control before the<xref href="GUID-1FFA0073-3D83-388E-A824-08C31F90CC54.dita#GUID-1FFA0073-3D83-388E-A824-08C31F90CC54/GUID-5BADE607-E845-34B2-9C2D-B6882B7D4288"><apiname>TPointerEvent::EButton1Up()</apiname></xref> event, call <codeph>SetPointerCapture(ETrue)</codeph> from the new |
ae94777fff8f
Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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control. </p><p>When the new control has received its pointer event |
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and <xref href="GUID-1FFA0073-3D83-388E-A824-08C31F90CC54.dita#GUID-1FFA0073-3D83-388E-A824-08C31F90CC54/GUID-5BADE607-E845-34B2-9C2D-B6882B7D4288"><apiname>TPointerEvent::EButton1Up()</apiname></xref> has been received, |
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Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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you have to call <codeph>SetPointerCapture(EFalse)</codeph> from the |
ae94777fff8f
Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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new control to stop events being sent to it indefinitely.</p></section> |
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<section id="GUID-8C337F8B-346A-430A-9A7A-A48B53031421"><title>Specifying |
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screen areas for touch events</title><p>To specify screen areas (<codeph>TRect</codeph>) for touch events, see the example below.</p><codeblock xml:space="preserve">void CTableauControl::HandlePointerEventL(const TPointerEvent& aPointerEvent) |
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{ |
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// Does the user point exit text on screen? |
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// iExitRect is rectangle of the text area on screen. |
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Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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if (iExitRect.Contains(aPointerEvent.iPosition)) |
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Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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{ |
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if (iEikonEnv->QueryWinL(_L("Klondike"),_L("Exit?"))) |
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{ |
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Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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// Exit was pointed, then do exit |
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(static_cast<CKlondikeAppUi*>(iEikonEnv->AppUi()))->HandleCommandL(EEikCmdExit); |
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return; |
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} |
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Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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} |
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... |
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Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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}</codeblock></section> |
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<section id="GUID-8B12AF1C-A98A-416D-A586-807CFC2B839D"><title>Ignoring |
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events other than pointer up in your control</title><p>In cases where |
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Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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you want to make sure your control receives only touch <parmname>EButton1Up</parmname> events after receiving a touch <parmname>EButton1Down</parmname> event, implement <xref href="GUID-B06F99BD-F032-3B87-AB26-5DD6EBE8C160.dita#GUID-B06F99BD-F032-3B87-AB26-5DD6EBE8C160/GUID-885AF2EB-587A-323B-99B5-019B2E7EBC78"><apiname>CCoeControl::IgnoreEventsUntilNextPointerUp()</apiname></xref>. </p></section> |
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</conbody></concept> |