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#include <slang.h>
#include <stdlib.h>
#include <string.h>
#include "newt.h"
#include "newt_pr.h"
struct scale {
long long fullValue;
int charsSet;
unsigned int percentage;
int csEmpty;
int csFull;
};
static void scaleDraw(newtComponent co);
static struct componentOps scaleOps = {
scaleDraw,
newtDefaultEventHandler,
NULL,
newtDefaultPlaceHandler,
newtDefaultMappedHandler,
} ;
newtComponent newtScale(int left, int top, int width, long long fullValue) {
newtComponent co;
struct scale * sc;
co = malloc(sizeof(*co));
sc = malloc(sizeof(struct scale));
co->data = sc;
co->destroyCallback = NULL;
co->ops = &scaleOps;
co->height = 1;
co->width = width;
co->top = top;
co->left = left;
co->takesFocus = 0;
co->isMapped = 0;
sc->fullValue = fullValue;
sc->charsSet = 0;
sc->percentage = 0;
sc->csEmpty = NEWT_COLORSET_EMPTYSCALE;
sc->csFull = NEWT_COLORSET_FULLSCALE;
return co;
}
void newtScaleSet(newtComponent co, unsigned long long amount) {
struct scale * sc = co->data;
int newPercentage;
if (amount >= sc->fullValue) {
newPercentage = 100;
sc->charsSet = co->width;
} else if (sc->fullValue >= -1ULL / (100 > co->width ? 100 : co->width)) {
/* avoid overflow on large numbers */
sc->charsSet = amount / (sc->fullValue / co->width);
newPercentage = amount / (sc->fullValue / 100);
} else {
sc->charsSet = (amount * co->width) / sc->fullValue;
newPercentage = (amount * 100) / sc->fullValue;
}
if (newPercentage != sc->percentage) {
sc->percentage = newPercentage;
scaleDraw(co);
}
}
void newtScaleSetColors(newtComponent co, int empty, int full) {
struct scale * sc = co->data;
sc->csEmpty = empty;
sc->csFull = full;
scaleDraw(co);
}
static void scaleDraw(newtComponent co) {
struct scale * sc = co->data;
int i;
int xlabel = (co->width-4) /2;
char percent[10];
if (!co->isMapped) return;
newtGotorc(co->top, co->left);
sprintf(percent, "%3d%%", sc->percentage);
SLsmg_set_color(sc->csFull);
for (i = 0; i < co->width; i++) {
if (i == sc->charsSet)
SLsmg_set_color(sc->csEmpty);
if (i >= xlabel && i < xlabel+4)
SLsmg_write_char(percent[i-xlabel]);
else
SLsmg_write_char(' ');
}
/* put cursor at beginning of text for better accessibility */
newtGotorc(co->top, co->left + xlabel);
}
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