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/* NRSS - ncurses RSS reader
Copyright (C) 2007 Jack Miller <jjm2n4@umr.edu>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License version 2 as
published by the Free Software Foundation.
*/
#include "nrss.h"
#include "interface.h"
#define NUM_READER_ESCAPES 3
static struct escape reader_escapes[NUM_READER_ESCAPES] = {
{"%d", NULL},
{"%t", NULL},
{"%h", NULL}
};
int word_length(char *string)
{
int i = 0;
for (i = 0; string[i]; i++) {
if ((string[i] == ' ') || (string[i] == '\n'))
break;
}
return i;
}
int linect(char *string, int *width)
{
int i = 0;
int offset = 0;
int ct = 0;
int lines = 1;
while (string[i]) {
if (string[i] == '\n') {
lines++;
if (offset > *width)
*width = offset;
offset = 0;
i++;
} else if (string[i] == ' ')
i++;
ct = word_length(&string[i]);
offset += ct + 1;
if (offset > ni->width - 2) {
lines += 1 + (ct / (ni->width - 2));
offset = (ct % (ni->width - 2));
*width = ni->width - 2;
}
i += ct;
}
if (offset > *width)
*width = offset;
return lines;
}
void reader(char *string)
{
int lines = 0;
int width = 0;
char *escaped = NULL;
char *filtered = NULL;
char *descr = NULL;
if (!string)
return;
descr =
get_cache_descr(ni->selitem->descr_start, ni->selitem->descr_len);
filtered = filter_description(descr);
reader_escapes[0].replacement = filtered ? filtered : descr;
reader_escapes[1].replacement = ni->selitem->title;
reader_escapes[2].replacement = ni->selfeed->handle;
escaped = escape_string(string, reader_escapes, NUM_READER_ESCAPES);
lines = linect(escaped, &width);
/* Floating placement logic */
/* Calculate some courtesy variables */
int realheight = ni->height - 5;
int realidx = (ni->selfeed->line + ni->selitem->idx - ni->offset - 1);
int realpos = (realidx) % realheight + 1;
int realwidth;
/* Realwidth is the width to the left of the reader */
/* If it's the first column, pin it to the left */
if ((realidx / realheight) == 0)
realwidth = 0;
/* If it's in the middle, center it on screen */
else if ((realidx / realheight) == ni->columns - 1)
realwidth = ni->width - width - 2;
/* If it's in the last column, pin it to the right */
else
realwidth = (ni->width / 2) - (width / 2);
/* Actually place the reader window. */
/* Case 1: Plenty of room below */
if (lines <= realheight - (realpos + 1))
ni->reader = newwin(lines + 2, width + 2, realpos + 1, realwidth);
/* Case 2: Plenty of room above */
else if (lines <= realpos - 1)
ni->reader =
newwin(lines + 2, width + 2, (realpos - lines) - 2, realwidth);
/* Case 3: There's room overlapping */
else if (lines <= realheight)
ni->reader = newwin(lines + 2, width + 2, 0, realwidth);
/* Case 4: No room, just maximize the window */
else
ni->reader = newwin(realheight + 2, width + 2, 0, realwidth);
wbkgdset(ni->reader, ' ' | COLOR_PAIR(THEME_DEF));
wattron(ni->reader, COLOR_PAIR(THEME_DEF));
wclear(ni->reader);
ni->preader = new_panel(ni->reader);
theme_print(ni->reader, 1, 1, ni->width - 2, escaped, 1);
if (lines > (realheight))
theme_print(ni->reader, realheight, width - 5, ni->width - 2,
"...", 0);
free(descr);
free(escaped);
free(filtered);
wborder(ni->reader, ACS_VLINE, ACS_VLINE, ACS_HLINE, ACS_HLINE,
ACS_ULCORNER, ACS_URCORNER, ACS_LLCORNER, ACS_LRCORNER);
update_panels();
doupdate();
}
void reader_off()
{
del_panel(ni->preader);
delwin(ni->reader);
ni->reader = NULL;
update_panels();
doupdate();
}
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