| author | Dominic Pinkman <dominic.pinkman@nokia.com> |
| Fri, 13 Aug 2010 16:47:46 +0100 | |
| changeset 14 | 578be2adaf3e |
| parent 5 | f345bda72bc4 |
| permissions | -rw-r--r-- |
|
14
578be2adaf3e
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
Dominic Pinkman <dominic.pinkman@nokia.com>
parents:
5
diff
changeset
|
1 |
<?xml version="1.0" encoding="utf-8"?> |
|
578be2adaf3e
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
Dominic Pinkman <dominic.pinkman@nokia.com>
parents:
5
diff
changeset
|
2 |
<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. --> |
|
578be2adaf3e
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
Dominic Pinkman <dominic.pinkman@nokia.com>
parents:
5
diff
changeset
|
3 |
<!-- This component and the accompanying materials are made available under the terms of the License |
|
578be2adaf3e
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
Dominic Pinkman <dominic.pinkman@nokia.com>
parents:
5
diff
changeset
|
4 |
"Eclipse Public License v1.0" which accompanies this distribution, |
|
578be2adaf3e
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
Dominic Pinkman <dominic.pinkman@nokia.com>
parents:
5
diff
changeset
|
5 |
and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". --> |
|
578be2adaf3e
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
Dominic Pinkman <dominic.pinkman@nokia.com>
parents:
5
diff
changeset
|
6 |
<!-- Initial Contributors: |
|
578be2adaf3e
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
Dominic Pinkman <dominic.pinkman@nokia.com>
parents:
5
diff
changeset
|
7 |
Nokia Corporation - initial contribution. |
|
578be2adaf3e
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
Dominic Pinkman <dominic.pinkman@nokia.com>
parents:
5
diff
changeset
|
8 |
Contributors: |
|
578be2adaf3e
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
Dominic Pinkman <dominic.pinkman@nokia.com>
parents:
5
diff
changeset
|
9 |
--> |
|
578be2adaf3e
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
Dominic Pinkman <dominic.pinkman@nokia.com>
parents:
5
diff
changeset
|
10 |
<!DOCTYPE concept |
|
578be2adaf3e
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
Dominic Pinkman <dominic.pinkman@nokia.com>
parents:
5
diff
changeset
|
11 |
PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd"> |
|
578be2adaf3e
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
Dominic Pinkman <dominic.pinkman@nokia.com>
parents:
5
diff
changeset
|
12 |
<concept xml:lang="en" id="GUID-EB82A2C8-EF92-5276-B503-687DEBF82EA4"><title>Creating an Animation Object</title><prolog><metadata><keywords/></metadata></prolog><conbody><p>In order to create new instances of animation objects of type <xref href="GUID-029C644B-BE0F-37C6-95E2-D27F974E6AD3.dita"><apiname>CAnim</apiname></xref> in the DLL, you need to implement the <codeph>CAnimDll::CreateInstanceL()</codeph> pure virtual factory function in the derived class. </p> <p>Declare your <xref href="GUID-9E598CDA-6483-3AE3-ABFF-0F701A47AB84.dita"><apiname>CAnimDll</apiname></xref> derived class in a header file as follows: </p> <codeblock id="GUID-6F7DE31B-0CCB-59D3-82BA-3D1AB6AE571F" xml:space="preserve">class CExampleAnimDll : public CAnimDll |
|
578be2adaf3e
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
Dominic Pinkman <dominic.pinkman@nokia.com>
parents:
5
diff
changeset
|
13 |
{
|
|
578be2adaf3e
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
Dominic Pinkman <dominic.pinkman@nokia.com>
parents:
5
diff
changeset
|
14 |
public: |
|
578be2adaf3e
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
Dominic Pinkman <dominic.pinkman@nokia.com>
parents:
5
diff
changeset
|
15 |
virtual CAnim* CreateInstanceL(TInt aType); |
|
578be2adaf3e
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
Dominic Pinkman <dominic.pinkman@nokia.com>
parents:
5
diff
changeset
|
16 |
};</codeblock> <p>A convenient way to implement <codeph>CreateInstanceL()</codeph> is to switch on the <codeph>TInt aType</codeph> argument, with each switch constructing a different <codeph>CAnim</codeph> derived animation class identified by an <codeph>aType</codeph> enum. For example. if <codeph>CShapesAnims</codeph> is one of those classes: </p> <codeblock id="GUID-BDFD1962-5845-5605-9915-C6E1A40EDAC4" xml:space="preserve">switch(aType) |
|
578be2adaf3e
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
Dominic Pinkman <dominic.pinkman@nokia.com>
parents:
5
diff
changeset
|
17 |
{
|
|
578be2adaf3e
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
Dominic Pinkman <dominic.pinkman@nokia.com>
parents:
5
diff
changeset
|
18 |
// cases |
|
578be2adaf3e
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
Dominic Pinkman <dominic.pinkman@nokia.com>
parents:
5
diff
changeset
|
19 |
case EShapesAnims: |
|
578be2adaf3e
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
Dominic Pinkman <dominic.pinkman@nokia.com>
parents:
5
diff
changeset
|
20 |
return new(ELeave) CShapesAnims; |
|
578be2adaf3e
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
Dominic Pinkman <dominic.pinkman@nokia.com>
parents:
5
diff
changeset
|
21 |
... |
|
578be2adaf3e
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
Dominic Pinkman <dominic.pinkman@nokia.com>
parents:
5
diff
changeset
|
22 |
default: |
|
578be2adaf3e
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
Dominic Pinkman <dominic.pinkman@nokia.com>
parents:
5
diff
changeset
|
23 |
iFunctions -> Panic(); |
|
578be2adaf3e
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
Dominic Pinkman <dominic.pinkman@nokia.com>
parents:
5
diff
changeset
|
24 |
return NULL; // dummy return to prevent compiler error |
|
1
25a17d01db0c
Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff
changeset
|
25 |
}</codeblock> <p>It is up to the implementer to decide whether receiving a bad parameter should cause a panic, as here, or a leave. The approach shown is recommended. </p> <p>The <codeph>Panic()</codeph> function is an <xref href="GUID-FFE76181-A701-374B-82AA-CEACC5856E91.dita"><apiname>MAnimGeneralFunctions</apiname></xref> helper function, to which <codeph>CAnim</codeph> provides the <codeph>iFunctions</codeph> pointer. These functions are implemented by the Window Server and are available to any <codeph>CAnim</codeph> derived class. </p> <p>The animation class's <codeph>ConstructL()</codeph> function is called after <codeph>CreateInstanceL()</codeph>. </p> </conbody><related-links><link href="GUID-FAF1B60A-A4B5-5E45-B9B9-84DA982F2E2B.dita"><linktext>Animations</linktext> </link> </related-links></concept> |