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#include <slang.h>
#include <stdlib.h>
#include <string.h>
#include "newt.h"
#include "newt_pr.h"
struct scrollbar {
int curr;
int cs, csThumb;
int arrows;
} ;
static void sbDraw(newtComponent co);
static void sbDestroy(newtComponent co);
static void sbDrawThumb(newtComponent co, int isOn);
static struct componentOps sbOps = {
sbDraw,
newtDefaultEventHandler,
sbDestroy,
newtDefaultPlaceHandler,
newtDefaultMappedHandler,
} ;
void newtScrollbarSet(newtComponent co, int where, int total) {
struct scrollbar * sb = co->data;
int new;
if (sb->arrows)
new = (where * (co->height - 3)) / (total ? total : 1) + 1;
else
new = (where * (co->height - 1)) / (total ? total : 1);
if (new != sb->curr) {
sbDrawThumb(co, 0);
sb->curr = new;
sbDrawThumb(co, 1);
}
}
newtComponent newtVerticalScrollbar(int left, int top, int height,
int normalColorset, int thumbColorset) {
newtComponent co;
struct scrollbar * sb;
co = malloc(sizeof(*co));
sb = malloc(sizeof(*sb));
co->data = sb;
if (!strcmp(getenv("TERM"), "linux") && height >= 2) {
sb->arrows = 1;
sb->curr = 1;
} else {
sb->arrows = 0;
sb->curr = 0;
}
sb->cs = normalColorset;
sb->csThumb = thumbColorset;
co->ops = &sbOps;
co->isMapped = 0;
co->left = left;
co->top = top;
co->height = height;
co->width = 1;
co->takesFocus = 0;
return co;
}
static void sbDraw(newtComponent co) {
struct scrollbar * sb = co->data;
int i;
if (!co->isMapped) return;
SLsmg_set_color(sb->cs);
SLsmg_set_char_set(1);
if (sb->arrows) {
newtGotorc(co->top, co->left);
SLsmg_write_char('\x2d');
for (i = 1; i < co->height - 1; i++) {
newtGotorc(i + co->top, co->left);
SLsmg_write_char('\x61');
}
newtGotorc(co->top + co->height - 1, co->left);
SLsmg_write_char('\x2e');
} else {
for (i = 0; i < co->height; i++) {
newtGotorc(i + co->top, co->left);
SLsmg_write_char('\x61');
}
}
SLsmg_set_char_set(0);
sbDrawThumb(co, 1);
}
static void sbDrawThumb(newtComponent co, int isOn) {
struct scrollbar * sb = co->data;
char ch = isOn ? '#' : '\x61';
if (!co->isMapped) return;
newtGotorc(sb->curr + co->top, co->left);
SLsmg_set_char_set(1);
/*if (isOn)
SLsmg_set_color(sb->csThumb);
else*/
SLsmg_set_color(sb->cs);
SLsmg_write_char(ch);
SLsmg_set_char_set(0);
}
static void sbDestroy(newtComponent co) {
struct scrollbar * sb = co->data;
free(sb);
free(co);
}
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