author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Wed, 09 Jun 2010 11:06:44 +0300 | |
branch | RCL_3 |
changeset 97 | 0e9202c0340c |
parent 0 | 5d03bc08d59c |
permissions | -rw-r--r-- |
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// Copyright (c) 2001-2009 Nokia Corporation and/or its subsidiary(-ies). |
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// All rights reserved. |
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// This component and the accompanying materials are made available |
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// under the terms of "Eclipse Public License v1.0" |
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// which accompanies this distribution, and is available |
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// at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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// |
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// Initial Contributors: |
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// Nokia Corporation - initial contribution. |
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// |
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// Contributors: |
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// |
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// Description: |
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// Client side interface to the plugin |
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// |
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// |
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#include <e32std.h> |
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#include "../SERVER/w32cmd.h" |
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#include "CLIENT.H" |
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EXPORT_C RSoundPlugIn::RSoundPlugIn() |
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/** Default constructor. */ |
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{} |
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EXPORT_C RSoundPlugIn::RSoundPlugIn(RWsSession& aWs) : MWsClientClass(aWs.iBuffer) |
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/** C++ constructor. |
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After calling this function, Construct() must be called to complete construction. |
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@param aWs Connected session with the window server. */ |
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{} |
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EXPORT_C TInt RSoundPlugIn::Construct(TUid aUid) |
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/** Second phase constructor. |
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Creates the server side resource and initialises the client's handle to it. |
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This function always causes a flush of the window server buffer. |
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@param aUid Optional UID. This can be ignored unless you intend to use the CommandReply() |
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function. If you do intend to use CommandReply(), this should be the plug-in DLL's third |
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UID. CommandReply() will return the value ESoundWrongPlugIn if the plug-in DLL identified |
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by this UID is not loaded. |
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@return KErrNone if the function was successful, otherwise one of the system wide error |
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codes. |
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@panic TW32Panic 17 in debug builds if called on an already constructed object.*/ |
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{ |
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__ASSERT_DEBUG(iWsHandle == KNullHandle, Panic(EW32PanicGraphicDoubleConstruction)); |
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TInt ret; |
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if ((ret=iBuffer->WriteReplyWs(&aUid,sizeof(aUid),EWsClOpCreateClick))>=0) |
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{ |
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iWsHandle=ret; |
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ret=KErrNone; |
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} |
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return(ret); |
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} |
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EXPORT_C void RSoundPlugIn::Close() |
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/** Sets the handle to zero and frees the resource owned by the server. */ |
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{ |
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if (iBuffer && iWsHandle) |
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Write(EWsClickOpFree); |
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iWsHandle=NULL; |
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} |
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EXPORT_C void RSoundPlugIn::Destroy() |
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/** Closes (by calling Close()) and deletes the object. */ |
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{ |
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Close(); |
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delete this; |
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} |
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EXPORT_C TBool RSoundPlugIn::IsLoaded(TBool& aIsChangeAble) const |
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/** Tests whether a key or pointer click plug-in DLL is currently loaded. |
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If one is currently loaded, aIsChangeAble returns whether or not |
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it can be unloaded. |
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This function always causes a flush of the window server buffer. |
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@param aIsChangeAble If a plug-in is currently loaded, this returns ETrue if it |
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can be unloaded and EFalse if it cannot. This depends on whether the |
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KEYCLICKPLUGINFIXED keyword is specified in wsini.ini for the plug-in. |
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@return ETrue if a plug-in is currently loaded, EFalse if not. */ |
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{ |
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TUint reply=WriteReply(EWsClickOpIsLoaded); |
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aIsChangeAble=reply&EClickLoadable; |
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return reply&EClickLoaded; |
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} |
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EXPORT_C TInt RSoundPlugIn::Unload() |
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/** Unloads the plug-in if one is currently loaded and if it can be unloaded. |
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This function always causes a flush of the window server buffer. |
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@return KErrNone if the function was successful, KErrNotSupported if it could |
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not be unloaded. |
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@capability WriteDeviceData */ |
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{ |
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return WriteReply(EWsClickOpUnLoad); |
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} |
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103 |
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EXPORT_C TInt RSoundPlugIn::Load(const TDesC& aFileName) |
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/** Loads a new plug-in, replacing the existing one, if any. |
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106 |
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This function always causes a flush of the window server buffer. |
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108 |
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@param aFileName The filename of the plug-in DLL to load. |
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@return KErrNone if the function was successful. KErrNotSupported if the currently |
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loaded plug-in could not be unloaded or aFileName does not refer to a loadable plug-in. |
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@capability WriteDeviceData */ |
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113 |
{ |
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TInt length=aFileName.Length(); |
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return WriteReply(&length,sizeof(length),aFileName.Ptr(),aFileName.Size(),EWsClickOpLoad); |
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} |
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|
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EXPORT_C void RSoundPlugIn::SetPenClick(TBool aEnabled) |
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/** |
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@publishedPartner |
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@released |
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122 |
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Sets whether pointer clicks should be enabled or disabled. |
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124 |
|
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By default, pointer clicks are enabled. |
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126 |
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@param aEnabled ETrue to enable pointer clicks, EFalse to disable them. |
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@capability WriteDeviceData */ |
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129 |
{ |
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WriteInt(aEnabled,EWsClickOpSetPenClick); |
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} |
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132 |
|
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EXPORT_C void RSoundPlugIn::SetKeyClick(TBool aEnabled) |
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/** |
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@publishedPartner |
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@released |
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137 |
|
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Sets whether key clicks should be enabled or disabled. |
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139 |
|
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By default, key clicks are enabled. |
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141 |
|
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@param aEnabled ETrue to enable key clicks, EFalse to disable them. |
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@capability WriteDeviceData */ |
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{ |
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WriteInt(aEnabled,EWsClickOpSetKeyClick); |
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} |
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147 |
|
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EXPORT_C TBool RSoundPlugIn::PenClickEnabled() const |
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/** Tests whether pointer clicks are enabled, as set by SetPenClick(). |
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150 |
|
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This function always causes a flush of the window server buffer. |
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152 |
|
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@return ETrue if pointer clicks are enabled, EFalse if they are disabled. */ |
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154 |
{ |
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return WriteReply(EWsClickOpPenClickEnabled); |
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} |
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157 |
|
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EXPORT_C TBool RSoundPlugIn::KeyClickEnabled() const |
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/** Tests whether key clicks are enabled, as set by SetKeyClick(). |
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160 |
|
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This function always causes a flush of the window server buffer. |
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|
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@return ETrue if key clicks are enabled, EFalse if they are disabled. */ |
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164 |
{ |
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return WriteReply(EWsClickOpKeyClickEnabled); |
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} |
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167 |
|
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EXPORT_C TInt RSoundPlugIn::CommandReply(TInt aOpcode, const TPtrC8& aArgs) |
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/** Sends a command to the plug-in DLL and may receive a response. |
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170 |
|
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If the correct plug-in is loaded, its implementation of CommandReplyL() |
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is called and its return code is returned by this function. |
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173 |
|
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Specify an opcode of zero if you just want the identity of the plug-in DLL |
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being used. |
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176 |
|
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This function always causes a flush of the window server buffer. |
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178 |
|
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@param aOpcode Opcode understood by both the window server client and the |
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plug-in DLL. If an opcode of zero is specified, this is intercepted by the |
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window server, and the third UID of the plug-in is returned. This allows |
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the caller to identify the plug-in DLL being used. |
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@param aArgs Packaged arguments which are passed to the plug-in via the window |
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server. |
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@return KErrNone or another of the system error codes, as returned by the |
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plug-in's CommandReplyL() implementation. ESoundWrongPlugIn is returned if no |
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plug-in is loaded, or if the plug-in identified by the aUid parameter in Construct() |
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is not loaded. */ |
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189 |
{ |
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return WriteReply(&aOpcode,sizeof(aOpcode),aArgs.Ptr(),aArgs.Length(),EWsClickOpCommandReply); |
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} |
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192 |