extensions.c

brew上创建extension的实例

/*===========================================================================

FILE: extensions.c
===========================================================================*/


/*===============================================================================
INCLUDES AND VARIABLE DEFINITIONS
=============================================================================== */
#include "AEEModGen.h"          // Module interface definitions
#include "AEEAppGen.h"          // Applet interface definitions
#include "AEEShell.h"           // Shell interface definitions
#include "AEEFile.h"			// File interface definitions
#include "AEEDB.h"				// Database interface definitions
#include "AEENet.h"				// Socket interface definitions
#include "AEESound.h"			// Sound Interface definitions
#include "AEETapi.h"			// TAPI Interface definitions
#include "AEEAppletCtl.h"
#include "Extension1.h"
#include "Extension2.h"


#include "frontapplet.bid"
#include "bkgapplet.bid"
#include "ext1.bid"
#include "ext2.bid"

#define EXTENSION_RELEASEIF(p)                Extension_FreeIF((IBase **)&(p))
#define EXTENSION_CancelRedraw(p)   { CALLBACK_Cancel(&(p)->m_cbRedraw);  }

#define FRONT_DRAW_TIMER 100
#define BKG_DRAW_TIMER 200
#define MAX_FILE_LENGTH 100
#define EVT_BKG_REFRESH_DATA       EVT_USER
#define EVT_BKG_REFRESH_FILE       EVT_USER+1

#define NOTIFY_MASK_FRONT_IDLE_EVENT          0x00000001
#define NOTIFY_MASK_FRONT_NONIDLE_EVENT       0x00000002

/*-------------------------------------------------------------------
Applet structure. All variables in here are reference via "pMe->"
-------------------------------------------------------------------*/
// create an applet structure that's passed around. All variables in
// here will be able to be referenced as static.
typedef struct _extensions {
	AEEApplet      a ;	       // First element of this structure must be AEEApplet
    AEEDeviceInfo  DeviceInfo; // always have access to the hardware device information

    // add your own variables here...



} extensions;

typedef struct _FrontApplet {
	AEEApplet      a ;	       // First element of this structure must be AEEApplet
    AEEDeviceInfo  DeviceInfo; // always have access to the hardware device information

    // add your own variables here...
	AECHAR* m_pcBuffer;//store the data sent from the background applet
	int m_iBufferSize;

	AEECallback       m_cbRedraw;//for redraw async operation
	   

    IExtension2 *pIExtension2;
	IExtension1 *pIExtension1;
	IAppletCtl* m_pAppletCtl;
	

    flg m_bValid:1;
} FrontApplet;

typedef struct _BkgApplet {
	AEEApplet      a ;	       // First element of this structure must be AEEApplet
    AEEDeviceInfo  DeviceInfo; // always have access to the hardware device information

    // add your own variables here...
	int m_iPosition;//read start position in a file.
	boolean m_bGoBg; // used to toggle whether to run in background mode

	IExtension1 *pIExtension1;
	
} BkgApplet;
/*-------------------------------------------------------------------
Function Prototypes
-------------------------------------------------------------------*/
static  boolean extensions_HandleEvent(FrontApplet* pMe, AEEEvent eCode, 
                                             uint16 wParam, uint32 dwParam);
boolean extensions_InitAppData(FrontApplet* pMe);
void    extensions_FreeAppData(FrontApplet* pMe);

static void       Extension_FreeIF(IBase ** ppif);

/*Function prototypes for FrontApplet*/
static void FrontApplet_DrawText(FrontApplet* pMe,AECHAR* pcBuffer);
static void FrontApplet_Redraw(FrontApplet* pMe);
static void FrontApplet_RedrawNotify(FrontApplet* pMe);

/*function prototypes for BkgApplet*/
static  boolean BkgApplet_HandleEvent(BkgApplet* pMe, AEEEvent eCode, 
                                             uint16 wParam, uint32 dwParam);
boolean BkgApplet_InitAppData(BkgApplet* pMe);
void    BkgApplet_FreeAppData(BkgApplet* pMe);
static void BkgApplet_RefreshData(BkgApplet* pMe);




/*===============================================================================
FUNCTION DEFINITIONS
=============================================================================== */

/*===========================================================================
FUNCTION: AEEClsCreateInstance

DESCRIPTION
	This function is invoked while the app is being loaded. All Modules must provide this 
	function. Ensure to retain the same name and parameters for this function.
	In here, the module must verify the ClassID and then invoke the AEEApplet_New() function
	that has been provided in AEEAppGen.c. 

   After invoking AEEApplet_New(), this function can do app specific initialization. In this
   example, a generic structure is provided so that app developers need not change app specific
   initialization section every time except for a call to IDisplay_InitAppData(). 
   This is done as follows: InitAppData() is called to initialize AppletData 
   instance. It is app developers responsibility to fill-in app data initialization 
   code of InitAppData(). App developer is also responsible to release memory 
   allocated for data contained in AppletData -- this can be done in 
   IDisplay_FreeAppData().

PROTOTYPE:
   int AEEClsCreateInstance(AEECLSID ClsId,IShell * pIShell,IModule * po,void ** ppObj)

PARAMETERS:
	clsID: [in]: Specifies the ClassID of the applet which is being loaded

	pIShell: [in]: Contains pointer to the IShell object. 

	pIModule: pin]: Contains pointer to the IModule object to the current module to which
	this app belongs

	ppObj: [out]: On return, *ppObj must point to a valid IApplet structure. Allocation
	of memory for this structure and initializing the base data members is done by AEEApplet_New().

DEPENDENCIES
  none

RETURN VALUE
  AEE_SUCCESS: If the app needs to be loaded and if AEEApplet_New() invocation was
     successful
  EFAILED: If the app does not need to be loaded or if errors occurred in 
     AEEApplet_New(). If this function returns FALSE, the app will not be loaded.

SIDE EFFECTS
  none
===========================================================================*/
int AEEClsCreateInstance(AEECLSID ClsId, IShell *pIShell, IModule *po, void **ppObj)
{
	*ppObj = NULL;

	if( ClsId == AEECLSID_FRONTAPPLET )
	{
		// Create the applet and make room for the applet structure
		if( AEEApplet_New(sizeof(FrontApplet),
                          ClsId,
                          pIShell,
                          po,
                          (IApplet**)ppObj,
                          (AEEHANDLER)extensions_HandleEvent,
                          (PFNFREEAPPDATA)extensions_FreeAppData) ) // the FreeAppData function is called after sending EVT_APP_STOP to the HandleEvent function
                          
		{
			//Initialize applet data, this is called before sending EVT_APP_START
            // to the HandleEvent function
			if(extensions_InitAppData((FrontApplet*)*ppObj))
			{
				//Data initialized successfully
				return(AEE_SUCCESS);
			}
			else
			{
				//Release the applet. This will free the memory allocated for the applet when
				// AEEApplet_New was called.
				IAPPLET_Release((IApplet*)*ppObj);
				return EFAILED;
			}

        } // end AEEApplet_New

    }
	else if(ClsId == AEECLSID_BKGAPPLET)
	{
		// Create the applet and make room for the applet structure
		if( AEEApplet_New(sizeof(BkgApplet),
                          ClsId,
                          pIShell,
                          po,
                          (IApplet**)ppObj,
                          (AEEHANDLER)BkgApplet_HandleEvent,
                          (PFNFREEAPPDATA)BkgApplet_FreeAppData) ) // the FreeAppData function is called after sending EVT_APP_STOP to the HandleEvent function
                          
		{
			//Initialize applet data, this is called before sending EVT_APP_START
            // to the HandleEvent function
			if(BkgApplet_InitAppData((BkgApplet*)*ppObj))
			{
				//Data initialized successfully
				return(AEE_SUCCESS);
			}
			else
			{
				//Release the applet. This will free the memory allocated for the applet when
				// AEEApplet_New was called.
				IAPPLET_Release((IApplet*)*ppObj);
				return EFAILED;
			}

        } // end AEEApplet_New


	}
	else if(ClsId == AEECLSID_EXT1)
	{
		if(SUCCESS == Extension1_New(pIShell, ClsId, ppObj))
		{
			return SUCCESS;
		}

	}
	else if(ClsId == AEECLSID_EXT2)
	{
		if(SUCCESS == Extension2_New(pIShell, ClsId, ppObj))
		{
			return SUCCESS;
		}

	}

	return(EFAILED);
}


/*===========================================================================
FUNCTION SampleAppWizard_HandleEvent

DESCRIPTION
	This is the EventHandler for this app. All events to this app are handled in this
	function. All APPs must supply an Event Handler.

PROTOTYPE:
	boolean SampleAppWizard_HandleEvent(IApplet * pi, AEEEvent eCode, uint16 wParam, uint32 dwParam)

PARAMETERS:
	pi: Pointer to the AEEApplet structure. This structure contains information specific
	to this applet. It was initialized during the AEEClsCreateInstance() function.

	ecode: Specifies the Event sent to this applet

   wParam, dwParam: Event specific data.

DEPENDENCIES
  none

RETURN VALUE
  TRUE: If the app has processed the event
  FALSE: If the app did not process the event

SIDE EFFECTS
  none
===========================================================================*/
static boolean extensions_HandleEvent(FrontApplet* pMe, AEEEvent eCode, uint16 wParam, uint32 dwParam)
{  
	

    switch (eCode) 
	{
        // App is told it is starting up
        case EVT_APP_START: 
			
	        if(SUCCESS == ISHELL_StartApplet(pMe->a.m_pIShell,AEECLSID_BKGAPPLET))
		    //if(SUCCESS == ISHELL_StartBackgroundApplet(pMe->a.m_pIShell,AEECLSID_BKGAPPLET,NULL))
			{
				/*start timer to display data in buffer*/
			    //ISHELL_SetTimer(pMe->a.m_pIShell, FRONT_DRAW_TIMER, (PFNNOTIFY)FrontApplet_DrawText, pMe);
			//	ISHELL_SetTimer(pMe->a.m_pIShell, FRONT_DRAW_TIMER, (PFNNOTIFY)FrontApplet_Redraw, pMe);
				
			}

            return(TRUE);

        case EVT_BKG_REFRESH_DATA:
			//store the data sent from the background applet
			pMe->m_iBufferSize = (int)wParam;
			if(pMe->m_iBufferSize > MAX_FILE_LENGTH)
			{
				DBGPRINTF("Current data size read from file is : %d , overwhelmed",pMe->m_iBufferSize);

			}
			MEMCPY(pMe->m_pcBuffer,(AECHAR*)dwParam,pMe->m_iBufferSize);


			return (TRUE);


        // App is told it is exiting
        case EVT_APP_STOP:
            ISHELL_CancelTimer(pMe->a.m_pIShell,(PFNNOTIFY)FrontApplet_Redraw,NULL);
			
			//extensions_FreeAppData(pMe);

      		return(TRUE);


        // App is being suspended 
        case EVT_APP_SUSPEND:
		    // Add your code here...

      		return(TRUE);


        // App is being resumed
        case EVT_APP_RESUME:
		
		

		  //  FrontApplet_DrawText(pMe,(AECHAR*)dwParam);

      		return(TRUE);


        // An SMS message has arrived for this app. Message is in the dwParam above as (char *)
        // sender simply uses this format "//BREW:ClassId:Message", example //BREW:0x00000001:Hello World
        case EVT_APP_MESSAGE:
		    // Add your code here...

      		return(TRUE);

        // A key was pressed. Look at the wParam above to see which key was pressed. The key
        // codes are in AEEVCodes.h. Example "AVK_1" means that the "1" key was pressed.
        case EVT_KEY:
		    // Add your code here...
			if(wParam == AVK_1)
			{
				ISHELL_PostEvent(pMe->a.m_pIShell,AEECLSID_BKGAPPLET,EVT_BKG_REFRESH_FILE,0,0);