/* goto the bottom of the file */
static void filebot( PFT_DISPC dispc )
{
if( ( dispc->buffbot + dispc->buffoffset ) < dispc->fsize && dispc->fsize > dispc->buffsize )
{
dispc->buffoffset = getblock( dispc, dispc->fsize + 1 );
buff_align( dispc );
}
dispc->bRefresh = HB_TRUE;
dispc->wintop = ( int ) dispc->buffbot - 3;
dispc->winrow = dispc->eline;
dispc->wincol = 0;
win_align( dispc );
}
/* go to the top of the file */
static void filetop( PFT_DISPC dispc )
{
if( dispc->buffoffset != 0 )
{
dispc->buffoffset = getblock( dispc, 0 );
buff_align( dispc );
}
dispc->bRefresh = HB_TRUE;
dispc->wintop = ( int ) dispc->buffoffset;
dispc->winrow = dispc->sline;
dispc->wincol = 0;
win_align( dispc );
}
static void windown( PFT_DISPC dispc )
{
int k;
HB_FOFFSET i, j;
dispc->bRefresh = HB_TRUE;
k = dispc->winbot;
while( dispc->buffer[ k ] != CR && k <= dispc->buffbot )
k++;
k += 2;
if( k <= dispc->buffbot )
{
dispc->winbot = k;
k = dispc->wintop;
while( dispc->buffer[ k ] != CR )
k++;
dispc->wintop = k + 2;
}
else if( ( dispc->buffbot + dispc->buffoffset ) < dispc->fsize && dispc->fsize > dispc->buffsize )
{
i = dispc->buffoffset + dispc->wintop;
j = i;
if( j > dispc->fsize )
j = dispc->fsize - dispc->buffsize;
dispc->buffoffset = getblock( dispc, j );
if( i < dispc->buffoffset )
dispc->wintop = 0;
else
dispc->wintop = ( int ) ( i - dispc->buffoffset );
buff_align( dispc );
win_align( dispc );
}
}
static void winup( PFT_DISPC dispc )
{
int k;
HB_FOFFSET i, j;
dispc->bRefresh = HB_TRUE;
k = dispc->wintop - 3;
while( dispc->buffer[ k ] != CR && k > dispc->bufftop )
k--;
if( k >= dispc->bufftop )
{
if( dispc->buffer[ k ] == CR )
k += 2;
dispc->wintop = k;
k = dispc->winbot - 3;
while( dispc->buffer[ k ] != CR )
k--;
dispc->winbot = k + 2;
}
else if( dispc->bufftop + dispc->buffoffset > 0 && dispc->fsize > dispc->buffsize )
{
i = dispc->buffoffset + dispc->wintop;
j = dispc->buffoffset - ( dispc->buffsize / 2 );
if( j < 0 )
j = 0;
dispc->buffoffset = getblock( dispc, j );
dispc->wintop = ( int ) ( i - dispc->buffoffset );
buff_align( dispc );
win_align( dispc );
}
}
