gpccurs.c

基于东南大学开发的SEP3203的ARM7中的所有驱动

	    return GPC_ERR_FAILED;
	if ( xPos + cursorWidth > pGC->width || yPos + cursorHeight > pGC->height )
	    return GPC_ERR_FAILED;		

	//Frequency
	if ( frequency > FREMAX || frequency < FREMIN )
	    return GPC_ERR_FAILED;
		
    if ( pGC->cursor != NULL )							// cursor has already existed
    {
        return GPC_ERR_FAILED;
    }
    else {   
        pGC->cursor = (CURSOR *)SysLmalloc( sizeof(CURSOR) );
		if( pGC->cursor == NULL )
			return GPC_ERR_FAILED;

		pGC->cursor->x = xPos;
		pGC->cursor->y = yPos;
		pGC->cursor->width = cursorWidth;
		pGC->cursor->height = cursorHeight;	
		pGC->cursor->status = status; 
		pGC->cursor->frequency = frequency; 
		pGC->cursor->style = cursorstyle;
		pGC->cursor->flag = FALSE;
		pGC->cursor->symbol = GPC_CURSOR_SYMBOL;
		
        DisplayCursor( pGC );
//		SysCreateTimer( &pGC->cursor->t_id, pGC->cursor->frequency, BlinkProc, (GC *)pGC );
		// longn_qi 2001/12/20 replaced above (1) with following (5)
		if( SysCreateTimer( &pGC->cursor->t_id, pGC->cursor->frequency, BlinkProc, (GC *)pGC, CYC_MODE|AUTO_START_MODE ) == TIMER_ERROR )
		{
			SysLfree( pGC->cursor );
			return GPC_ERR_FAILED;
		}
        if( status == ASIX_CURSOR_ON )
			SysStartTimer( pGC->cursor->t_id );

		return GPC_ERR_OK;
    }
}  

//-------------------------------------------------------------------
//    SysStartCursor()
//    
//         Start a cursor.
//
//    Parameters:
//         gc     - Address value of graphic context.
//         style  - Output style.
//         
//    returns:
//         GPC_ERR_OK or GPC_ERR_FAILED
//-------------------------------------------------------------------
STATUS SysStartCursor( DWORD gc )    
{
    GC *pGC;

	pGC = (GC *)gc;

	// longn_qi 2001/12/20 added (5)
	if( pGC == NULL || pGC->symbol != GPC_GC_SYMBOL )	
	    return GPC_ERR_FAILED;		
	
	if( pGC->cursor == NULL || pGC->cursor->symbol != GPC_CURSOR_SYMBOL )
	    return GPC_ERR_FAILED;		
	
	if ( pGC->cursor->status == ASIX_CURSOR_OFF )    
	{
	    pGC->cursor->status = ASIX_CURSOR_ON;
		DisplayCursor( pGC ); 
		SysStartTimer( pGC->cursor->t_id );
	}

	return GPC_ERR_OK;
	
}	
  
//-------------------------------------------------------------------
//    SysStopCursor()
//    
//         Stop a cursor.
//
//    Parameters:
//         gc     - Address value of graphic context.
//         style  - Output style.
//         
//    returns:
//         GPC_ERR_OK or GPC_ERR_FAILED
//-------------------------------------------------------------------  
STATUS SysStopCursor( DWORD gc )
{ 
    GC *pGC;
    
	pGC = (GC *)gc;

	// longn_qi 2001/12/20 added (5)
	if( pGC == NULL || pGC->symbol != GPC_GC_SYMBOL )	
	    return GPC_ERR_FAILED;		
	
	if( pGC->cursor == NULL || pGC->cursor->symbol != GPC_CURSOR_SYMBOL )
	    return GPC_ERR_FAILED;		

	if( pGC->cursor->status == ASIX_CURSOR_ON )
	{
	    SysStopTimer( pGC->cursor->t_id );
		if( pGC->cursor->flag == TRUE )
		{
//			pGC->cursor->flag = FALSE;
			CleanCursor( pGC );
		}
	    return GPC_ERR_OK;
	 }
	 else 
		return GPC_ERR_FAILED;
}

//-------------------------------------------------------------------
//    SysCloseCursor()
//    
//         Stop a cursor.
//
//    Parameters:
//         gc     - Address value of graphic context.
//         style  - Output style.
//         
//    returns:
//         GPC_ERR_OK or GPC_ERR_FAILED
//-------------------------------------------------------------------  
STATUS SysFreeCursor( DWORD gc )
{ 
    GC *pGC;
    
	pGC = (GC *)gc;
	
	// longn_qi 2001/12/20 added (5)
	if( pGC == NULL || pGC->symbol != GPC_GC_SYMBOL )	
	    return GPC_ERR_FAILED;		
	
	if( pGC->cursor == NULL || pGC->cursor->symbol != GPC_CURSOR_SYMBOL )
	    return GPC_ERR_FAILED;		

    SysFreeTimer( pGC->cursor->t_id );
	if ( pGC->cursor->status == ASIX_CURSOR_ON )
		CleanCursor( pGC );

    SysLfree( pGC->cursor );
	
	pGC->cursor = NULL;
        
    return GPC_ERR_OK;
	
}

//-------------------------------------------------------------------
//    BlinkFunc()
//    
//         Process of timer.
//
//    Parameters:
//         gc     - Address value of graphic context.
//         style  - Output style.
//         
//    returns:
//         GPC_ERR_OK
//-------------------------------------------------------------------
void BlinkProc( GC *pGC ) 
{	
    //WORD ColorIndex;
	//dis_dsp( );
	
	pGC->cursor->flag = !pGC->cursor->flag;
	//seGetPixel( pGC, (SHORT)pGC->cursor->x, (SHORT)pGC->cursor->y, &ColorIndex );
	switch( pGC->cursor->style )
	{
		case CURSOR_THREAD :
			SysDrawVert( (DWORD)pGC, BLINK_MASK, pGC->cursor->x, pGC->cursor->y, pGC->cursor->height, GPC_SOLID_LINE, GPC_XOR_STYLE );
			break;
		case CURSOR_REC :
			SysClearRec( (DWORD)pGC, BLINK_MASK, pGC->cursor->x, pGC->cursor->y, pGC->cursor->width, pGC->cursor->height, GPC_XOR_STYLE );
			break; 
	}

	//ena_dsp( );
    SysStartTimer( pGC->cursor->t_id );


} 	

//-------------------------------------------------------------------
//    DisplayCursor()
//    
//         Display a cursor.
//
//    Parameters:
//         pGC    - The point that points the current task's gc.
//         style  - Output style.
//         
//    returns:
//         void
//-------------------------------------------------------------------  
void DisplayCursor( GC *pGC )
{
	
	if ( pGC->cursor->flag == FALSE )
	{
		switch ( pGC->cursor->style )
		{
			case CURSOR_THREAD:
				SysDrawVert( (DWORD)pGC, BLINK_MASK, pGC->cursor->x, pGC->cursor->y, pGC->cursor->height, GPC_SOLID_LINE, GPC_XOR_STYLE );
				break;
			case CURSOR_REC:
				SysClearRec( (DWORD)pGC, BLINK_MASK, pGC->cursor->x, pGC->cursor->y, pGC->cursor->width, (SHORT)pGC->cursor->height, GPC_XOR_STYLE );
				break; 
		}
		pGC->cursor->flag = TRUE;
	}
}
       
//-------------------------------------------------------------------
//    CleanCursor()
//    
//         Clean a cursor.
//
//    Parameters:
//         gc     - Address value of graphic context.
//         style  - Output style.
//         
//    returns:
//         void
//-------------------------------------------------------------------      
void CleanCursor( GC *pGC )
{
    //WORD i, k;
    //PWORD bitmap;

	//if ( ( style < GPC_REPLACE_STYLE ) || ( style > GPC_NOT_STYLE ) ) 
    //return GPC_ERR_FAILED;
    
    /*bitmap = ( PWORD )malloc(1 * pGC->cursor->height); 
	if( bitmap == NULL )
		return GPC_ERR_FAILED;
		
	for( i = pGC->cursor->y; i < ( pGC->cursor->y + pGC->cursor->height ); i++ )
    {
        bitmap[k]= 0xfff;           
        k++;
    } 
    //SysPutRec( gc, bitmap, pGC->cursor->x, pGC->cursor->y, pGC->cursor->width, pGC->cursor->height, GPC_REPLACE_STYLE, reserved );
	//seSetImage( pGC, (SHORT)pGC->cursor->x, (SHORT)pGC->cursor->y, (SHORT)pGC->cursor->width, (SHORT)pGC->cursor->height, bitmap, GPC_REPLACE_STYLE ); 
	*/
	if ( pGC->cursor->flag == TRUE )
    {
		switch ( pGC->cursor->style )
		{
			case CURSOR_THREAD:
				SysDrawVert( (DWORD)pGC, BLINK_MASK, pGC->cursor->x, pGC->cursor->y, pGC->cursor->height, GPC_SOLID_LINE, GPC_XOR_STYLE );
				break;
			case CURSOR_REC:
				SysClearRec( (DWORD)pGC, BLINK_MASK, pGC->cursor->x, pGC->cursor->y, pGC->cursor->width, pGC->cursor->height, GPC_XOR_STYLE );
				break; 
		}
		pGC->cursor->flag = FALSE;
	}
}
//-------------------------------------------------------------------
//    SysAdjustCursorDisp()
//    
//			If cursor is covered, user should call this function to
//			adjust cursor display.
//
//    Parameters:
//			gc     - Address value of graphic context.
//         
//    returns:
//			GPC_ERR_FAILED
//			GPC_ERR_OK
//-------------------------------------------------------------------      
STATUS SysAdjustCursorDisp( DWORD gc )
{
	GC *pGC;

	pGC = (GC *)gc;
	
	if( pGC == NULL || pGC->symbol != GPC_GC_SYMBOL )	
	    return GPC_ERR_FAILED;		
	
	if( pGC->cursor == NULL || pGC->cursor->symbol != GPC_CURSOR_SYMBOL )
	    return GPC_ERR_FAILED;		

	if( pGC->cursor->flag == TRUE )
	{
		switch( pGC->cursor->style )
		{
			case CURSOR_THREAD :
				SysDrawVert( (DWORD)pGC, BLINK_MASK, pGC->cursor->x, pGC->cursor->y, pGC->cursor->height, GPC_SOLID_LINE, GPC_XOR_STYLE );
				break;
			case CURSOR_REC :
				SysClearRec( (DWORD)pGC, BLINK_MASK, pGC->cursor->x, pGC->cursor->y, pGC->cursor->width, (SHORT)pGC->cursor->height, GPC_XOR_STYLE );
				break; 
		}
	}	
	return GPC_ERR_OK;
}

//-------------------------------------------------------------------
//    SysGetCursorStatus()
//    
//			Get cursor status.
//
//    Parameters:
//			gc     - Address value of graphic context.
//         
//    returns:
//			GPC_ERR_FAILED
//			GPC_ERR_OK
//-------------------------------------------------------------------      
STATUS SysGetCursorStatus( DWORD gc, PWORD status )
{
	GC *pGC;

	pGC = (GC *)gc;

	if( pGC == NULL || pGC->symbol != GPC_GC_SYMBOL )	
	    return GPC_ERR_FAILED;		
	
	if( pGC->cursor == NULL || pGC->cursor->symbol != GPC_CURSOR_SYMBOL )
	    return GPC_ERR_FAILED;		

	if( status == NULL )
		return GPC_ERR_FAILED;

	*status = pGC->cursor->status;
		
	return GPC_ERR_OK;
}