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/*
* $Id: screen_utils.c,v 1.4 2004/03/16 13:57:24 kalle Exp $
*
*/
#include <stdlib.h>
#include <string.h>
#include <glib.h>
#include <ncurses.h>
#include "libmpdclient.h"
#include "mpc.h"
#include "command.h"
#include "screen.h"
list_window_t *
list_window_init(WINDOW *w, int width, int height)
{
list_window_t *lw;
lw = malloc(sizeof(list_window_t));
memset(lw, 0, sizeof(list_window_t));
lw->w = w;
lw->cols = width;
lw->rows = height;
lw->clear = 1;
return lw;
}
list_window_t *
list_window_free(list_window_t *lw)
{
if( lw )
{
memset(lw, 0, sizeof(list_window_t));
free(lw);
}
return NULL;
}
void
list_window_reset(list_window_t *lw)
{
lw->selected = 0;
lw->start = 0;
lw->clear = 1;
}
void
list_window_set_selected(list_window_t *lw, int n)
{
lw->selected=n;
}
void
list_window_paint(list_window_t *lw,
list_window_callback_fn_t callback,
void *callback_data)
{
int i;
while( lw->selected < lw->start )
{
lw->start--;
lw->clear=1;
}
while( lw->selected >= lw->start+lw->rows )
{
lw->start++;
lw->clear=1;
}
if( lw->clear )
{
wclear(lw->w);
lw->clear=0;
}
for(i=0; i<lw->rows; i++)
{
int highlight;
char *label;
label = (callback) (lw->start+i, &highlight, callback_data);
if( label )
{
wmove(lw->w, i, 0);
if( highlight )
wattron(lw->w, A_BOLD);
if( lw->start+i == lw->selected )
wattron(lw->w, A_REVERSE);
waddnstr(lw->w, label, lw->cols);
if( highlight )
wattroff(lw->w, A_BOLD);
if( lw->start+i == lw->selected )
wattroff(lw->w, A_REVERSE);
}
}
}
void
list_window_next(list_window_t *lw, int length)
{
if( lw->selected < length-1 )
lw->selected++;
}
void
list_window_previous(list_window_t *lw)
{
if( lw->selected > 0 )
lw->selected--;
}
void
list_window_first(list_window_t *lw)
{
lw->selected = 0;
}
void
list_window_last(list_window_t *lw, int length)
{
lw->selected = length-1;
}
void
list_window_next_page(list_window_t *lw, int length)
{
int step = lw->rows-1;
if( step<= 0 )
return;
if( lw->selected+step < length-1 )
lw->selected+=step;
else
return list_window_last(lw,length);
}
void
list_window_previous_page(list_window_t *lw)
{
int step = lw->rows-1;
if( step<= 0 )
return;
if( lw->selected-step > 0 )
lw->selected-=step;
else
list_window_first(lw);
}
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