hellothread.c

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/*
 * File: HelloWorld.c
 * Author: Ray Rischpater (Rocket Mobile, Inc.)
 * Purpose:
 *   Demonstrate the use of IThread
 *
 */


#include "AEE.h"
#include "AEEStdLib.h"
#include "AEEAppGen.h"        // Applet helper file
#include "helloworld.bid"    // Applet-specific header that contains class ID
#include "nmdef.h"
#include "AEEThread.h"
#include "AEEGraphics.h"

typedef struct _SThreadCtx
{
  IThread  *pit;
  int n;
  IDisplay *pid;
  IShell *pis;
  IGraphics *pig;
} SThreadCtx;

typedef struct _CApp
{
  AEEApplet a;
  SThreadCtx stc1, stc2;
  AEECallback cbThread2Done;
  int nThread2Result;
} CApp;



/*-------------------------------------------------------------------
Static function prototypes
-------------------------------------------------------------------*/
static void Thread1Start( IThread *pThread, SThreadCtx *pMe );
static void Thread2Start( IThread *pThread, SThreadCtx *pMe );
static void Thread1Main( SThreadCtx *pMe );
static void Thread2Main( SThreadCtx *pMe );
static void Thread2Done( CApp *pMe );
static boolean HelloWorld_HandleEvent(AEEApplet * pme, AEEEvent eCode,uint16 wParam, uint32 dwParam);
int AEEClsCreateInstance(AEECLSID ClsId,IShell * pIShell,IModule * pMod,void ** ppObj);

/*===============================================================================
FUNCTION DEFINITIONS
=============================================================================== */
int AEEClsCreateInstance(AEECLSID ClsId,IShell * pIShell,IModule * pMod,void ** ppObj)
{
  *ppObj = NULL;

  if(AEEApplet_New( sizeof(CApp),                  // Size of our private class
    ClsId,                              // Our class ID
    pIShell,                            // Shell interface
    pMod,                               // Module instance
    (IApplet**)ppObj,                   // Return object
    (AEEHANDLER)HelloWorld_HandleEvent, // Our event handler
    NULL))                              // No special "cleanup" function
    return(AEE_SUCCESS);

  return (EFAILED);
}

static void Thread1Start( IThread *pThread, SThreadCtx *pMe )
{
  Thread1Main( pMe );
}

static void Thread1Main( SThreadCtx *pMe )
{
  AECHAR wsz[ 16 ];

  while( 1 )
  {
    pMe->n++;

    WSPRINTF( wsz, sizeof( wsz ), L"t1=%d", pMe->n );

    IDISPLAY_DrawText(pMe->pid,    // Display instance
      AEE_FONT_NORMAL,     // Use BOLD font
      wsz,         // Text - Normally comes from resource
      -1,                  // -1 = Use full string length
      0,                   // Ignored - IDF_ALIGN_CENTER
      0,                   // Ignored - IDF_ALIGN_MIDDLE
      NULL,                // No clipping
      IDF_ALIGN_CENTER | IDF_ALIGN_TOP);
    IDISPLAY_Update (pMe->pid);

    ISHELL_Resume( pMe->pis, ITHREAD_GetResumeCBK( pMe->pit ) );
    ITHREAD_Suspend( pMe->pit );
  }
}

static void Thread2Start( IThread *pit, SThreadCtx *pMe )
{
  Thread2Main( pMe );
}

static void Thread2Main( SThreadCtx *pMe )
{
  AECHAR wsz[ 16 ];

  while( pMe->n < 256 )
  {
    AEECircle circle;

      pMe->n++;
      circle.cx = 176/2;
      circle.cy = 160;
      circle.r = pMe->n % 10;

      WSPRINTF( wsz, sizeof( wsz ), L"t2=%d", pMe->n );

      IDISPLAY_DrawText(pMe->pid,    // Display instance
        AEE_FONT_NORMAL,     // Use BOLD font
        wsz,         // Text - Normally comes from resource
        -1,                  // -1 = Use full string length
        0,                   // Ignored - IDF_ALIGN_CENTER
        0,                   // Ignored - IDF_ALIGN_MIDDLE
        NULL,                // No clipping
        IDF_ALIGN_CENTER | IDF_ALIGN_BOTTOM);

      IDISPLAY_EraseRgn( pMe->pid, 0, 150, 176, 20 );
      IGRAPHICS_DrawCircle( pMe->pig, &circle );

      IDISPLAY_Update (pMe->pid);
    ISHELL_Resume( pMe->pis, ITHREAD_GetResumeCBK( pMe->pit ) );
    ITHREAD_Suspend( pMe->pit );
  }
  ITHREAD_Exit( pMe->pit, SUCCESS );
}

static void Thread2Done( CApp *pMe )
{
  DBGPRINTF( pMe->nThread2Result == SUCCESS ? "Thread2 exit SUCCESS" : "Thread2 exit FAILED" );
}

static boolean HelloWorld_HandleEvent(AEEApplet * p, AEEEvent eCode, uint16 wParam, uint32 dwParam)
{  
  AECHAR szText[] = {'H','e','l','l','o',' ','W','o', 'r', 'l', 'd', '\0'};
  CApp *pMe = (CApp *)p;

  switch (eCode)
    {
  case EVT_APP_START:                        
    {
      int r;
      r = ISHELL_CreateInstance( p->m_pIShell, AEECLSID_THREAD, (void **)&pMe->stc1.pit );
      r = ISHELL_CreateInstance( p->m_pIShell, AEECLSID_THREAD, (void **)&pMe->stc2.pit );
      r = ISHELL_CreateInstance( p->m_pIShell, AEECLSID_GRAPHICS, (void **)&pMe->stc2.pig );
      pMe->stc1.pis = p->m_pIShell;
      pMe->stc1.pid = p->m_pIDisplay;
        pMe->stc2.pis = p->m_pIShell;
      pMe->stc2.pid = p->m_pIDisplay;

      CALLBACK_Init( &pMe->cbThread2Done, (PFNNOTIFY)Thread2Done, (void *)pMe );
      ITHREAD_HoldRsc( pMe->stc2.pit, (IBase *)pMe->stc2.pig );
      ITHREAD_Join( pMe->stc2.pit, &pMe->cbThread2Done, &pMe->nThread2Result );
      ITHREAD_Start( pMe->stc1.pit, 128, (PFNTHREAD)Thread1Start, (void *)&pMe->stc1 );
      ITHREAD_Start( pMe->stc2.pit, 128, (PFNTHREAD)Thread2Start, (void *)&pMe->stc2 );
      
      IDISPLAY_DrawText(p->m_pIDisplay,    // Display instance
        AEE_FONT_BOLD,       // Use BOLD font
        szText,              // Text - Normally comes from resource
        -1,                  // -1 = Use full string length
        0,                   // Ignored - IDF_ALIGN_CENTER
        0,                   // Ignored - IDF_ALIGN_MIDDLE
        NULL,                // No clipping
        IDF_ALIGN_CENTER | IDF_ALIGN_MIDDLE);
      IDISPLAY_Update (p->m_pIDisplay);
    }
    return(TRUE);

    case EVT_APP_STOP:
      {
        IGRAPHICS_Release( pMe->stc2.pig );
        ITHREAD_Release( pMe->stc1.pit );
        ITHREAD_Release( pMe->stc2.pit );
      }
      return(TRUE);


    default:
      break;
  }
  return(FALSE);
}