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Add FLTK GUI frontend (termtcp-gui)

Browse Source 
Single-session GUI with dark-themed output + green monitor panes,
input field, connect dialog, BPQ protocol parser, and status bar.
Auto-connects if only one host is configured. Build with: make gui

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
gui-redesign
Ryan Collier 3 weeks ago
parent de55974c10
commit e36cff11d4
3 changed files with 744 additions and 8 deletions
Show Stats Download Patch File Download Diff File

2
.gitignore vendored
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@ -1,4 +1,6 @@
termtcp
termtcp-gui
termtcp_cli.o
termtcp.o
termtcp_gui.o
*.log

24
Makefile
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@ -1,12 +1,21 @@
# TermTCP - Makefile
CC = gcc
CXX = g++
CFLAGS = -Wall -Wextra -O2 -std=gnu99 -D_XOPEN_SOURCE_EXTENDED
CXXFLAGS = -Wall -Wextra -O2 -std=c++11
LDFLAGS = -lm -lncursesw
# FLTK
FLTK_CXXFLAGS = $(shell fltk-config --cxxflags)
FLTK_LDFLAGS = $(shell fltk-config --ldflags)
TARGET = termtcp
GUI_TARGET = termtcp-gui
SOURCE = termtcp.c
GUI_SOURCE = termtcp_gui.cpp
OBJECT = $(SOURCE:.c=.o)
GUI_OBJECT = $(GUI_SOURCE:.cpp=.o)
# Default target
all: $(TARGET)
@ -21,6 +30,17 @@ $(TARGET): $(OBJECT)
%.o: %.c
$(CC) $(CFLAGS) -c $< -o $@
# GUI target
gui: $(GUI_TARGET)
$(GUI_TARGET): $(GUI_OBJECT)
$(CXX) $(CXXFLAGS) -o $@ $^ $(FLTK_LDFLAGS)
@echo "Build complete: $(GUI_TARGET)"
@ls -lh $(GUI_TARGET)
$(GUI_OBJECT): $(GUI_SOURCE)
$(CXX) $(CXXFLAGS) $(FLTK_CXXFLAGS) -c $< -o $@
# Debug build
debug: CFLAGS += -g -O0 -DDEBUG
debug: clean $(TARGET)
@ -32,7 +52,7 @@ run: $(TARGET)
# Clean
clean:
rm -f $(OBJECT) $(TARGET)
rm -f $(OBJECT) $(GUI_OBJECT) $(TARGET) $(GUI_TARGET)
@echo "Clean complete"
# Install to system
@ -61,4 +81,4 @@ help:
@echo " make lint - Run static analysis"
@echo " make help - Show this message"
.PHONY: all debug run clean install uninstall lint help
.PHONY: all gui debug run clean install uninstall lint help

714
termtcp_gui.cpp
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@ -0,0 +1,714 @@
/* termtcp_gui.cpp — FLTK GUI for TermTCP
* BPQTermTCP protocol client for BPQ32 packet radio nodes.
* Compile: see Makefile target 'gui'
*/
#include <FL/Fl.H>
#include <FL/Fl_Double_Window.H>
#include <FL/Fl_Menu_Bar.H>
#include <FL/Fl_Text_Display.H>
#include <FL/Fl_Text_Buffer.H>
#include <FL/Fl_Input.H>
#include <FL/Fl_Button.H>
#include <FL/Fl_Return_Button.H>
#include <FL/Fl_Box.H>
#include <FL/Fl_Tile.H>
#include <FL/Fl_Hold_Browser.H>
#include <FL/Fl_Window.H>
#include <FL/fl_ask.H>
extern "C" {
#include <unistd.h>
#include <fcntl.h>
#include <sys/socket.h>
#include <netdb.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <errno.h>
}
#define GUI_VERSION "0.0.53"
#define MAX_HOSTS 10
#define RECV_SZ 4096
#define MON_FBUF_SZ 4096
/* ── Config ──────────────────────────────────────────────── */
struct HostEntry {
char host[100];
char port[10];
char username[80];
char password[80];
char name[50];
};
static HostEntry hosts[MAX_HOSTS];
static int num_hosts = 0;
static char cfg_path[512];
static int mon_visible = 1;
static int mon_tx = 1;
static int mon_com = 1;
static int mon_nodes = 0;
static int mon_colour = 1;
static int mon_ui_only = 1;
static int port_mask = 0xFFFF;
static char port_names[32][32];
/* ── Session state ───────────────────────────────────────── */
static int g_sock = -1;
static int g_connected = 0;
static int g_host_idx = -1;
static time_t g_conn_time = 0;
static int g_in_mon = 0;
static char g_mon_fbuf[MON_FBUF_SZ];
static int g_mon_flen = 0;
/* ── GUI widgets ─────────────────────────────────────────── */
static Fl_Double_Window *main_win = nullptr;
static Fl_Text_Display *out_disp = nullptr;
static Fl_Text_Display *mon_disp = nullptr;
static Fl_Text_Buffer *out_buf = nullptr;
static Fl_Text_Buffer *out_styl = nullptr;
static Fl_Text_Buffer *mon_buf = nullptr;
static Fl_Text_Buffer *mon_styl = nullptr;
static Fl_Input *inp = nullptr;
static Fl_Box *status_lbl = nullptr;
static Fl_Menu_Bar *menu_bar = nullptr;
/* Style table — index from 'A'.
* A=default B=green(monitor) C=red(error)
* D=yellow(status) E=cyan(info) F=magenta */
static const Fl_Text_Display::Style_Table_Entry STYLES[] = {
{ FL_FOREGROUND_COLOR, FL_COURIER, 13 }, /* A */
{ fl_rgb_color(0,180,0), FL_COURIER, 13 }, /* B */
{ FL_RED, FL_COURIER, 13 }, /* C */
{ fl_rgb_color(180,140,0), FL_COURIER, 13 }, /* D */
{ fl_rgb_color(0,190,210), FL_COURIER, 13 }, /* E */
{ FL_MAGENTA, FL_COURIER, 13 }, /* F */
};
#define N_STYLES 6
/* ── Forward declarations ────────────────────────────────── */
static void tcp_disconnect(void);
static void update_status(void);
static void cb_timer(void *);
/* ── Config I/O ──────────────────────────────────────────── */
static void load_config(void)
{
const char *home = getenv("HOME");
if (!home) home = "/tmp";
snprintf(cfg_path, sizeof(cfg_path), "%s/.BPQTermTCP.ini", home);
FILE *fp = fopen(cfg_path, "r");
if (!fp) return;
char line[256];
int hi = -1;
while (fgets(line, sizeof(line), fp)) {
/* strip trailing newline */
int l = (int)strlen(line);
while (l > 0 && (line[l-1]=='\n'||line[l-1]=='\r'||line[l-1]==' '))
line[--l] = '\0';
if (line[0] == '[') {
/* section header */
if (strncmp(line, "[Host", 5) == 0 && num_hosts < MAX_HOSTS) {
hi = num_hosts++;
memset(&hosts[hi], 0, sizeof(HostEntry));
} else {
hi = -1;
}
continue;
}
char *eq = strchr(line, '=');
if (!eq) continue;
*eq = '\0';
const char *key = line, *val = eq + 1;
if (hi >= 0) {
if (!strcmp(key,"Host")) { strncpy(hosts[hi].host, val, 99); }
else if (!strcmp(key,"Port")) { strncpy(hosts[hi].port, val, 9); }
else if (!strcmp(key,"Username")) { strncpy(hosts[hi].username, val, 79); }
else if (!strcmp(key,"Password")) { strncpy(hosts[hi].password, val, 79); }
else if (!strcmp(key,"Name")) { strncpy(hosts[hi].name, val, 49); }
} else {
if (!strcmp(key,"MonTX")) mon_tx = atoi(val);
else if (!strcmp(key,"MonCom")) mon_com = atoi(val);
else if (!strcmp(key,"MonNodes")) mon_nodes = atoi(val);
else if (!strcmp(key,"MonUIOnly")) mon_ui_only = atoi(val);
else if (!strcmp(key,"MonVisible")) mon_visible = atoi(val);
else if (!strcmp(key,"PortMask")) port_mask = atoi(val);
else if (strncmp(key,"PortName",8)==0) {
int pn = atoi(key+8);
if (pn >= 1 && pn <= 32)
snprintf(port_names[pn-1], 32, "%s", val);
}
}
}
fclose(fp);
}
/* ── Text display helpers ────────────────────────────────── */
static void append_styled(Fl_Text_Buffer *tbuf, Fl_Text_Buffer *sbuf,
const char *text, int len, char style)
{
if (len <= 0) return;
/* Build a style string the same length as text (minus any stripped
* BPQ 0x1B colour-escape pairs which we skip). */
char *tmp = (char *)malloc(len + 1);
char *sty = (char *)malloc(len + 1);
if (!tmp || !sty) { free(tmp); free(sty); return; }
int ti = 0;
char cur = style;
for (int i = 0; i < len; ) {
unsigned char c = (unsigned char)text[i];
if (c == 0x1B && i + 1 < len) {
/* BPQ colour byte — map to style char */
unsigned char cb = (unsigned char)text[i+1];
int idx = (int)cb - 10;
if (idx < 0) cur = 'A';
else if (idx < 4) cur = 'E'; /* dark blue → cyan */
else if (idx < 20) cur = 'B'; /* green */
else if (idx < 60) cur = 'C'; /* reds */
else cur = 'D'; /* bright → yellow */
i += 2;
} else if (c == '\r') {
i++; /* skip bare CR */
} else {
tmp[ti] = (char)c;
sty[ti] = cur;
ti++;
i++;
}
}
tmp[ti] = '\0';
sty[ti] = '\0';
tbuf->append(tmp);
sbuf->append(sty);
free(tmp);
free(sty);
}
static void out_append(const char *text, int len, char style = 'A')
{
append_styled(out_buf, out_styl, text, len, style);
/* scroll to bottom */
out_disp->scroll(out_buf->count_lines(0, out_buf->length()), 0);
}
static void mon_append(const char *text, int len, char style = 'B')
{
if (!mon_visible) return;
append_styled(mon_buf, mon_styl, text, len, style);
mon_disp->scroll(mon_buf->count_lines(0, mon_buf->length()), 0);
}
/* ── BPQ protocol ────────────────────────────────────────── */
static void send_trace_options(bool with_ports)
{
if (g_sock < 0) return;
char buf[80];
int len;
if (with_ports)
len = snprintf(buf, sizeof(buf),
"\\\\\\\\%x %x %x %x %x %x 0 1\r",
port_mask, mon_tx, mon_com, mon_nodes, mon_colour, mon_ui_only);
else
len = snprintf(buf, sizeof(buf),
"\\\\\\\\%x %x %x %x %x %x\r",
port_mask, mon_tx, mon_com, mon_nodes, mon_colour, mon_ui_only);
send(g_sock, buf, len, 0);
}
static void parse_portinfo(const char *data, int len)
{
const char *p = data, *e = data + len;
int nports = 0;
while (p < e && *p >= '0' && *p <= '9') nports = nports*10 + (*p++ - '0');
if (p >= e || *p != '|') return;
p++;
for (int i = 0; i < nports && p < e; i++) {
int n = 0;
while (p < e && *p >= '0' && *p <= '9') n = n*10 + (*p++ - '0');
if (p >= e || *p != ' ') break;
p++;
const char *desc = p;
while (p < e && *p != '|') p++;
int dlen = (int)(p - desc);
if (n >= 1 && n <= 32 && dlen > 0) {
int copy = dlen < 31 ? dlen : 31;
memcpy(port_names[n-1], desc, copy);
port_names[n-1][copy] = '\0';
}
if (p < e && *p == '|') p++;
}
}
static void bpq_process(const char *buf, int len)
{
const char *p = buf;
const char *end = buf + len;
while (p < end) {
if (!g_in_mon) {
const char *ff = (const char *)memchr(p, 0xFF, end - p);
if (!ff) {
out_append(p, (int)(end - p));
break;
}
if (ff > p)
out_append(p, (int)(ff - p));
p = ff + 1;
if (p < end && (unsigned char)*p == 0xFF) {
parse_portinfo(p + 1, (int)(end - p - 1));
p = end;
} else {
g_in_mon = 1;
g_mon_flen = 0;
}
} else {
const char *fe = (const char *)memchr(p, 0xFE, end - p);
int seg_len = fe ? (int)(fe - p) : (int)(end - p);
if (seg_len > 0) {
int room = MON_FBUF_SZ - 1 - g_mon_flen;
int add = seg_len < room ? seg_len : room;
memcpy(g_mon_fbuf + g_mon_flen, p, add);
g_mon_flen += add;
}
if (fe) {
if (g_mon_flen > 0) {
/* NODES filter */
int is_nodes = 0;
for (int i = 0; i <= g_mon_flen - 6 && !is_nodes; i++)
if (memcmp(g_mon_fbuf + i, ">NODES", 6) == 0) is_nodes = 1;
if (mon_nodes || !is_nodes) {
g_mon_fbuf[g_mon_flen] = '\n';
mon_append(g_mon_fbuf, g_mon_flen + 1);
}
}
g_mon_flen = 0;
g_in_mon = 0;
p = fe + 1;
} else {
break;
}
}
}
}
/* ── Socket handling ─────────────────────────────────────── */
static void on_socket_ready(int /*fd*/, void * /*data*/)
{
char buf[RECV_SZ];
int n = recv(g_sock, buf, sizeof(buf) - 1, 0);
if (n > 0) {
bpq_process(buf, n);
} else if (n == 0 || (n < 0 && errno != EAGAIN)) {
out_append("\n*** Connection closed by server ***\n", 37, 'C');
tcp_disconnect();
}
}
static int tcp_connect_to(int idx)
{
if (idx < 0 || idx >= num_hosts) return -1;
struct addrinfo hints, *res = nullptr;
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
if (getaddrinfo(hosts[idx].host, hosts[idx].port, &hints, &res) != 0 || !res)
return -1;
int fd = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
if (fd < 0) { freeaddrinfo(res); return -1; }
if (connect(fd, res->ai_addr, res->ai_addrlen) != 0) {
close(fd); freeaddrinfo(res); return -1;
}
freeaddrinfo(res);
return fd;
}
static void tcp_disconnect(void)
{
if (g_sock >= 0) {
Fl::remove_fd(g_sock);
close(g_sock);
g_sock = -1;
}
g_connected = 0;
g_host_idx = -1;
g_conn_time = 0;
g_in_mon = 0;
g_mon_flen = 0;
update_status();
}
static void tcp_send(const char *text, int len)
{
if (g_sock < 0 || !g_connected) return;
send(g_sock, text, len, 0);
}
/* ── Status bar ──────────────────────────────────────────── */
static void update_status(void)
{
static char buf[160];
if (!g_connected || g_host_idx < 0) {
snprintf(buf, sizeof(buf), " Not connected");
} else {
time_t elapsed = time(nullptr) - g_conn_time;
int h = (int)(elapsed / 3600);
int m = (int)((elapsed % 3600) / 60);
int s = (int)(elapsed % 60);
time_t now = time(nullptr);
struct tm *utc = gmtime(&now);
snprintf(buf, sizeof(buf),
" %s (%s:%s) %02d:%02d:%02d %02d:%02d UTC",
hosts[g_host_idx].name,
hosts[g_host_idx].host, hosts[g_host_idx].port,
h, m, s,
utc->tm_hour, utc->tm_min);
}
status_lbl->copy_label(buf);
status_lbl->redraw();
}
static void cb_timer(void *)
{
update_status();
Fl::repeat_timeout(1.0, cb_timer, nullptr);
}
/* ── Connect dialog ──────────────────────────────────────── */
static int g_dlg_result = -1;
static void cb_dlg_connect(Fl_Widget *w, void *browser_ptr)
{
Fl_Hold_Browser *br = (Fl_Hold_Browser *)browser_ptr;
int sel = br->value();
g_dlg_result = (sel > 0) ? sel - 1 : -1;
w->window()->hide();
}
static void cb_dlg_cancel(Fl_Widget *w, void *)
{
g_dlg_result = -1;
w->window()->hide();
}
static void cb_dlg_dblclick(Fl_Widget *w, void *)
{
Fl_Hold_Browser *br = (Fl_Hold_Browser *)w;
if (br->value() > 0) {
g_dlg_result = br->value() - 1;
br->window()->hide();
}
}
static int show_connect_dialog(void)
{
if (num_hosts == 0) {
fl_message("No hosts configured.\nEdit %s to add BPQ nodes.", cfg_path);
return -1;
}
Fl_Window *dlg = new Fl_Window(320, 240, "Connect to Host");
dlg->begin();
Fl_Hold_Browser *br = new Fl_Hold_Browser(10, 10, 300, 170);
for (int i = 0; i < num_hosts; i++) {
char lbl[140];
snprintf(lbl, sizeof(lbl), "%s (%s:%s)",
hosts[i].name[0] ? hosts[i].name : hosts[i].host,
hosts[i].host, hosts[i].port);
br->add(lbl);
}
br->select(1);
br->callback(cb_dlg_dblclick);
br->when(FL_WHEN_CHANGED); /* double-click triggers when() */
Fl_Return_Button *btn_ok = new Fl_Return_Button(130, 195, 90, 30, "Connect");
btn_ok->callback(cb_dlg_connect, br);
Fl_Button *btn_cancel = new Fl_Button(230, 195, 80, 30, "Cancel");
btn_cancel->callback(cb_dlg_cancel);
dlg->end();
dlg->set_modal();
g_dlg_result = -1;
dlg->show();
while (dlg->shown()) Fl::wait();
int result = g_dlg_result;
delete dlg;
return result;
}
/* ── Menu callbacks ──────────────────────────────────────── */
static void do_connect(int idx)
{
if (g_connected) tcp_disconnect();
char msg[160];
snprintf(msg, sizeof(msg), "Connecting to %s (%s:%s)...\n",
hosts[idx].name[0] ? hosts[idx].name : hosts[idx].host,
hosts[idx].host, hosts[idx].port);
out_append(msg, (int)strlen(msg), 'E');
int fd = tcp_connect_to(idx);
if (fd < 0) {
snprintf(msg, sizeof(msg), "Connection failed: %s\n", strerror(errno));
out_append(msg, (int)strlen(msg), 'C');
return;
}
g_sock = fd;
g_connected = 1;
g_host_idx = idx;
g_conn_time = time(nullptr);
Fl::add_fd(g_sock, FL_READ, on_socket_ready, nullptr);
send_trace_options(true);
update_status();
snprintf(msg, sizeof(msg), "Connected.\n");
out_append(msg, (int)strlen(msg), 'E');
}
static void cb_connect(Fl_Widget *, void *)
{
int idx = show_connect_dialog();
if (idx >= 0) do_connect(idx);
}
static void cb_disconnect(Fl_Widget *, void *)
{
if (!g_connected) { fl_message("Not connected."); return; }
out_append("*** Disconnected\n", 17, 'C');
tcp_disconnect();
}
static void cb_quit(Fl_Widget *, void *)
{
if (g_connected) tcp_disconnect();
exit(0);
}
static void cb_clear_out(Fl_Widget *, void *)
{
out_buf->remove(0, out_buf->length());
out_styl->remove(0, out_styl->length());
}
static void cb_clear_mon(Fl_Widget *, void *)
{
mon_buf->remove(0, mon_buf->length());
mon_styl->remove(0, mon_styl->length());
}
static void cb_toggle_mon(Fl_Widget *, void *)
{
mon_visible = !mon_visible;
if (mon_visible)
out_append("[Monitor ON]\n", 13, 'D');
else
out_append("[Monitor OFF]\n", 14, 'D');
}
/* ── Input send ──────────────────────────────────────────── */
static void cb_send(Fl_Widget *, void *)
{
const char *text = inp->value();
if (!text || text[0] == '\0') return;
if (!g_connected) {
out_append("Not connected.\n", 15, 'C');
inp->value("");
return;
}
/* Echo locally */
char echo[514];
int elen = snprintf(echo, sizeof(echo), "> %s\n", text);
out_append(echo, elen, 'D');
/* Send to server with CR */
int tlen = (int)strlen(text);
char *tbuf = (char *)malloc(tlen + 2);
if (tbuf) {
memcpy(tbuf, text, tlen);
tbuf[tlen] = '\r';
tbuf[tlen+1] = '\0';
tcp_send(tbuf, tlen + 1);
free(tbuf);
}
inp->value("");
}
/* ── Main window ─────────────────────────────────────────── */
static Fl_Menu_Item menu_items[] = {
{ "&File", 0, nullptr, nullptr, FL_SUBMENU },
{ "&Connect...", FL_CTRL+'k', cb_connect },
{ "&Disconnect", FL_CTRL+'d', cb_disconnect },
{ "Clear output", 0, cb_clear_out },
{ "Clear monitor", 0, cb_clear_mon },
{ "E&xit", FL_CTRL+'q', cb_quit, nullptr, FL_MENU_DIVIDER },
{ nullptr },
{ "&Monitor", 0, nullptr, nullptr, FL_SUBMENU },
{ "Toggle monitor pane", FL_CTRL+'m', cb_toggle_mon },
{ nullptr },
{ "&Help", 0, nullptr, nullptr, FL_SUBMENU },
{ "About", 0, [](Fl_Widget*, void*){
fl_message("TermTCP GUI v" GUI_VERSION "\n"
"BPQTermTCP client for BPQ32 packet radio nodes.\n"
"Config: ~/.BPQTermTCP.ini");
}},
{ nullptr },
{ nullptr }
};
static void build_window(void)
{
const int W = 900, H = 650;
const int MENU_H = 25;
const int STATUS_H = 22;
const int INPUT_H = 32;
const int SEND_W = 70;
const int MON_FRAC = 3; /* monitor gets 1/3 of inner height */
main_win = new Fl_Double_Window(W, H, "TermTCP " GUI_VERSION);
main_win->begin();
main_win->color(FL_WHITE);
/* Menu bar */
menu_bar = new Fl_Menu_Bar(0, 0, W, MENU_H);
menu_bar->menu(menu_items);
menu_bar->color(fl_rgb_color(230,230,230));
/* Resizable split area */
int tile_y = MENU_H;
int tile_h = H - MENU_H - INPUT_H - STATUS_H;
int out_h = tile_h - tile_h / MON_FRAC;
int mon_h = tile_h / MON_FRAC;
Fl_Tile *tile = new Fl_Tile(0, tile_y, W, tile_h);
/* Output display */
out_disp = new Fl_Text_Display(0, tile_y, W, out_h);
out_buf = new Fl_Text_Buffer();
out_styl = new Fl_Text_Buffer();
out_disp->buffer(out_buf);
out_disp->highlight_data(out_styl, STYLES, N_STYLES, 'A', nullptr, 0);
out_disp->textfont(FL_COURIER);
out_disp->textsize(13);
out_disp->color(fl_rgb_color(20, 20, 20));
out_disp->textcolor(FL_WHITE);
out_disp->cursor_color(FL_WHITE);
out_disp->scrollbar_width(14);
out_disp->wrap_mode(Fl_Text_Display::WRAP_AT_BOUNDS, 0);
/* Monitor display */
mon_disp = new Fl_Text_Display(0, tile_y + out_h, W, mon_h);
mon_buf = new Fl_Text_Buffer();
mon_styl = new Fl_Text_Buffer();
mon_disp->buffer(mon_buf);
mon_disp->highlight_data(mon_styl, STYLES, N_STYLES, 'B', nullptr, 0);
mon_disp->textfont(FL_COURIER);
mon_disp->textsize(12);
mon_disp->color(fl_rgb_color(10, 30, 10));
mon_disp->textcolor(fl_rgb_color(0, 220, 0));
mon_disp->cursor_color(fl_rgb_color(0,220,0));
mon_disp->scrollbar_width(14);
tile->end();
/* Input row */
int inp_y = tile_y + tile_h;
inp = new Fl_Input(0, inp_y, W - SEND_W, INPUT_H);
inp->textfont(FL_COURIER);
inp->textsize(13);
inp->color(fl_rgb_color(30,30,30));
inp->textcolor(FL_WHITE);
inp->cursor_color(FL_WHITE);
inp->when(FL_WHEN_ENTER_KEY_ALWAYS);
inp->callback(cb_send);
Fl_Return_Button *send_btn = new Fl_Return_Button(W - SEND_W, inp_y, SEND_W, INPUT_H, "Send");
send_btn->callback(cb_send);
/* Status bar */
int st_y = inp_y + INPUT_H;
status_lbl = new Fl_Box(0, st_y, W, STATUS_H, " Not connected");
status_lbl->align(FL_ALIGN_LEFT | FL_ALIGN_INSIDE);
status_lbl->box(FL_FLAT_BOX);
status_lbl->color(fl_rgb_color(0, 0, 140));
status_lbl->labelcolor(FL_WHITE);
status_lbl->labelfont(FL_HELVETICA);
status_lbl->labelsize(12);
main_win->resizable(tile);
main_win->end();
main_win->callback([](Fl_Widget *, void *) {
if (g_connected) tcp_disconnect();
exit(0);
});
}
/* ── main ────────────────────────────────────────────────── */
int main(int argc, char **argv)
{
/* Init port names */
for (int i = 0; i < 32; i++)
snprintf(port_names[i], 32, "Port %d", i+1);
load_config();
Fl::scheme("gtk+");
build_window();
main_win->show(argc, argv);
/* Status timer */
Fl::add_timeout(1.0, cb_timer, nullptr);
/* Welcome banner */
const char *banner = "TermTCP GUI v" GUI_VERSION
" — File > Connect to get started\n";
out_append(banner, (int)strlen(banner), 'E');
/* Auto-connect if exactly one host and -c flag or single host */
int auto_idx = -1;
for (int i = 1; i < argc; i++) {
if ((strcmp(argv[i], "-c") == 0 || strcmp(argv[i], "--connect") == 0)
&& i+1 < argc)
auto_idx = atoi(argv[++i]);
}
if (auto_idx < 0 && num_hosts == 1) auto_idx = 0;
if (auto_idx >= 0 && auto_idx < num_hosts)
do_connect(auto_idx);
return Fl::run();
}
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