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// Feel free to copy from this example to your own code
// SPDX-License-Identifier: 0BSD OR BSL-1.0 OR MIT-0
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include "termpaint.h"
#include "termpaintx.h"
// snippet-type-start
typedef struct event_ {
int type;
int modifier;
char *string;
struct event_* next;
} event;
event* event_current; // unprocessed event
event* event_saved; // event to free on next call
// snippet-type-end
// snippet-callback-start
void event_callback(void *userdata, termpaint_event *tp_event) {
(void)userdata;
// remember tp_event is only valid while this callback runs, so copy everything we need.
event *copied_event = NULL;
if (tp_event->type == TERMPAINT_EV_CHAR) {
copied_event = malloc(sizeof(event));
copied_event->type = tp_event->type;
copied_event->modifier = tp_event->c.modifier;
copied_event->string = strndup(tp_event->c.string, tp_event->c.length);
copied_event->next = NULL;
} else if (tp_event->type == TERMPAINT_EV_KEY) {
copied_event = malloc(sizeof(event));
copied_event->type = tp_event->type;
copied_event->modifier = tp_event->key.modifier;
copied_event->string = strndup(tp_event->key.atom, tp_event->key.length);
copied_event->next = NULL;
}
if (copied_event) {
if (!event_current) {
event_current = copied_event;
} else {
event* prev = event_current;
while (prev->next) {
prev = prev->next;
}
prev->next = copied_event;
}
}
}
// snippet-callback-end
// snippet-wait-start
event* key_wait(termpaint_integration *integration) {
while (!event_current) {
if (!termpaintx_full_integration_do_iteration(integration)) {
// some kind of error
return NULL; // or some other error handling
}
}
if (event_saved) {
free(event_saved->string);
free(event_saved);
}
event *ret = event_current;
event_current = ret->next;
event_saved = ret;
return ret;
}
// snippet-wait-end
// snippet-menu-start
bool quit_menu(termpaint_terminal *terminal, termpaint_integration *integration) {
termpaint_surface *surface;
surface = termpaint_terminal_get_surface(terminal);
int fg = TERMPAINT_DEFAULT_COLOR;
int bg = TERMPAINT_DEFAULT_COLOR;
termpaint_surface_write_with_colors(surface, 20, 4, "Really quit? (y/N)",
fg, bg);
termpaint_terminal_flush(terminal, false);
while (true) {
event *event = key_wait(integration);
if (event->type == TERMPAINT_EV_CHAR) {
if (!strcmp(event->string, "y") || !strcmp(event->string, "Y")) {
return true;
}
if (!strcmp(event->string, "n") || !strcmp(event->string, "N")) {
return false;
}
}
termpaint_surface_write_with_colors(surface, 20, 5,
"Please reply with either 'y' for yes or 'n' for no.",
fg, bg);
termpaint_terminal_flush(terminal, false);
}
}
// snippet-menu-end
int main(int argc, char **argv) {
(void)argc; (void)argv;
termpaint_integration *integration;
termpaint_terminal *terminal;
termpaint_surface *surface;
integration = termpaintx_full_integration_setup_terminal_fullscreen(
"+kbdsig +kbdsigint",
event_callback, NULL,
&terminal);
surface = termpaint_terminal_get_surface(terminal);
termpaint_surface_clear(surface,
TERMPAINT_DEFAULT_COLOR, TERMPAINT_DEFAULT_COLOR);
termpaint_surface_write_with_colors(surface,
0, 0,
"Hello World",
TERMPAINT_DEFAULT_COLOR, TERMPAINT_DEFAULT_COLOR);
// snippet-main-start
termpaint_terminal_flush(terminal, false);
while (true) {
event *event = key_wait(integration);
if (event->type == TERMPAINT_EV_CHAR) {
if (strcmp(event->string, "q") == 0) {
break;
}
}
if (event->type == TERMPAINT_EV_KEY) {
if (strcmp(event->string, "Escape") == 0) {
break;
}
}
}
// snippet-main-end
quit_menu(terminal, integration);
termpaint_terminal_free_with_restore(terminal);
return 0;
}
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