static void WndDownOne( a_window *wnd )
{
if( !WndAtTop( wnd ) ) {
if( WndScroll( wnd, 1 ) != 0 ) {
if( WndHasCurrent( wnd ) ) WndMoveUp( wnd );
}
} else {
WndScroll( wnd, 1 );
}
}
static void WndUpOne( a_window *wnd )
{
if( !WndAtBottom( wnd ) ) {
if( WndScroll( wnd, -1 ) != 0 ) {
if( WndHasCurrent( wnd ) ) WndMoveDown( wnd );
}
} else {
WndScroll( wnd, -1 );
}
}
static void WndMoveDown( a_window *wnd )
{
if( WndAtBottom( wnd ) ) {
WndDirtyCurr( wnd );
WndScroll( wnd, 1 );
if( !WndFindCloseTab( wnd, wnd->current.row ) ) {
wnd->current.row--;
}
WndCurrVisible( wnd );
WndDirtyCurr( wnd );
} else if( WndHasCurrent( wnd ) ) {
WndDirtyCurr( wnd );
if( WndFindCloseTab( wnd, wnd->current.row+1 ) ) {
wnd->current.row++;
}
WndCurrVisible( wnd );
WndDirtyCurr( wnd );
} else {
if( WndFirstCurrent( wnd ) ) {
WndDirtyCurr( wnd );
}
}
}
static void FileTrack( a_window *wnd, cue_handle *ch )
{
unsigned active, old_active;
unsigned end_line;
int slack;
file_window *file = WndFile( wnd );
mod_handle mod;
cue_fileid id;
wnd_row curr_row;
int curr_piece;
if( ch == NULL ) {
mod = NO_MOD;
id = 0;
} else {
mod = CueMod( ch );
id = CueFileId( ch );
}
if( file->viewhndl == NULL
|| file->mod != mod
|| file->file_id != id ) {
if( file->viewhndl != NULL ) {
FDoneSource( file->viewhndl );
}
file->mod = mod;
file->file_id = id;
FileSetDotAddr( wnd, GetCodeDot() );
if( file->mod == NO_MOD ) {
file->viewhndl = NULL;
} else {
file->viewhndl = OpenSrcFile( ch );
}
FileSetTitle( wnd, mod );
SeekToTheEnd( file );
file->eof = UINT_MAX;
WndZapped( wnd );
FilePosInit( wnd );
file->active = NOT_ACTIVE;
FilePos( wnd, 0 );
DbgUpdate( UP_OPEN_CHANGE );
}
active = ActiveLine();
if( active != file->active ) {
FileSetDotAddr( wnd, GetCodeDot() );
WndGetCurrent( wnd, &curr_row, &curr_piece );
WndNoCurrent( wnd );
if( curr_row != WND_NO_ROW ) {
WndRowDirty( wnd, curr_row );
}
}
old_active = file->active;
file->active = NOT_ACTIVE;
slack = WndRows( wnd ) / 4;
if( slack > 2 )
slack = 2;
end_line = WndTop( wnd ) + WndRows( wnd ) - 1;
if( old_active == NOT_ACTIVE || active > end_line ) {
WndZapped( wnd );
WndScroll( wnd, active - slack - WndTop( wnd ) );
} else if( active > end_line - slack ) {
WndRowDirtyImmed( wnd, old_active );
WndScroll( wnd, WndRows( wnd ) - 2 * slack );
} else if( active < WndTop( wnd ) ) {
WndRowDirtyImmed( wnd, old_active );
WndScroll( wnd, active - WndTop( wnd ) - slack );
} else {
WndRowDirty( wnd, old_active );
}
WndNewCurrent( wnd, active, PIECE_SOURCE );
WndRowDirty( wnd, active );
file->active = active;
}
static void Centre( a_window *wnd, unsigned line )
{
WndZapped( wnd );
WndScroll( wnd, line - ( WndRows( wnd ) / 2 ) - WndTop( wnd ) );
}
void WndPageDown( a_window *wnd )
{
WndScroll( wnd, WndPageSize( wnd ) );
}
void WndPageUp( a_window *wnd )
{
WndScroll( wnd, -WndPageSize( wnd ) );
}
