C++ (Cpp) console_get_kbd_event Examples

Example #1

File: nterm.c Project: pratikmankawde/HelenOS_Nano

int main(int argc, char *argv[])
{
	kbd_event_t ev;
	int rc;

	if (argc != 3) {
		print_syntax();
		return 1;
	}

	rc = conn_open(argv[1], argv[2]);
	if (rc != EOK) {
		printf("Error connecting.\n");
		return 1;
	}

	printf("Connection established.\n");

	con = console_init(stdin, stdout);

	done = false;
	while (!done) {
		console_get_kbd_event(con, &ev);
		if (ev.type == KEY_PRESS)
			key_handle(&ev);
	}

	return 0;
}

Example #2

File: screen.c Project: pratikmankawde/HelenOS_Nano

/** Get char without timeout
 *
 */
int twait(void)
{
	wchar_t c = 0;
	
	while (c == 0) {
		kbd_event_t event;
		
		if (!console_get_kbd_event(console, &event))
			return -1;
		
		if (event.type == KEY_PRESS)
			c = event.c;
	}
	
	return (int) c;
}

Example #3

File: ping.c Project: pratikmankawde/HelenOS_Nano

static int input_fibril(void *arg)
{
	console_ctrl_t *con;
	kbd_event_t ev;

	con = console_init(stdin, stdout);
	printf("[Press Ctrl-Q to quit]\n");

	while (true) {
		if (!console_get_kbd_event(con, &ev))
			break;

		if (ev.type == KEY_PRESS && (ev.mods & (KM_ALT | KM_SHIFT)) ==
		    0 && (ev.mods & KM_CTRL) != 0) {
			/* Ctrl+key */
			if (ev.key == KC_Q) {
				ping_signal_done();
				return 0;
			}
		}
	}

	return 0;
}

Example #4

File: edit.c Project: fhector/helenOS-0.5-Hector

/** Ask for a file name. */
static char *filename_prompt(char const *prompt, char const *init_value)
{
	kbd_event_t ev;
	char *str;
	wchar_t buffer[INFNAME_MAX_LEN + 1];
	int max_len;
	int nc;
	bool done;

	asprintf(&str, "%s: %s", prompt, init_value);
	status_display(str);
	console_set_pos(con, 1 + str_length(str), scr_rows - 1);
	free(str);

	console_set_style(con, STYLE_INVERTED);

	max_len = min(INFNAME_MAX_LEN, scr_columns - 4 - str_length(prompt));
	str_to_wstr(buffer, max_len + 1, init_value);
	nc = wstr_length(buffer);
	done = false;

	while (!done) {
		console_get_kbd_event(con, &ev);

		if (ev.type == KEY_PRESS) {
			/* Handle key press. */
			if (((ev.mods & KM_ALT) == 0) &&
			     (ev.mods & KM_CTRL) != 0) {
				;
			} else if ((ev.mods & (KM_CTRL | KM_ALT)) == 0) {
				switch (ev.key) {
				case KC_ESCAPE:
					return NULL;
				case KC_BACKSPACE:
					if (nc > 0) {
						putchar('\b');
						console_flush(con);
						--nc;
					}
					break;
				case KC_ENTER:
					done = true;
					break;
				default:
					if (ev.c >= 32 && nc < max_len) {
						putchar(ev.c);
						console_flush(con);
						buffer[nc++] = ev.c;
					}
					break;
				}
			}
		}
	}

	buffer[nc] = '\0';
	str = wstr_to_astr(buffer);

	console_set_style(con, STYLE_NORMAL);

	return str;
}

Example #5

File: edit.c Project: fhector/helenOS-0.5-Hector

int main(int argc, char *argv[])
{
	kbd_event_t ev;
	coord_t coord;
	bool new_file;

	spt_t pt;

	con = console_init(stdin, stdout);
	console_clear(con);

	console_get_size(con, &scr_columns, &scr_rows);

	pane.rows = scr_rows - 1;
	pane.columns = scr_columns;
	pane.sh_row = 1;
	pane.sh_column = 1;

	/* Start with an empty sheet. */
	sheet_init(&doc.sh);

	/* Place caret at the beginning of file. */
	coord.row = coord.column = 1;
	sheet_get_cell_pt(&doc.sh, &coord, dir_before, &pt);
	sheet_place_tag(&doc.sh, &pt, &pane.caret_pos);
	pane.ideal_column = coord.column;

	if (argc == 2) {
		doc.file_name = str_dup(argv[1]);
	} else if (argc > 1) {
		printf("Invalid arguments.\n");
		return -2;
	} else {
		doc.file_name = NULL;
	}

	new_file = false;

	if (doc.file_name == NULL || file_insert(doc.file_name) != EOK)
		new_file = true;

	/* Move to beginning of file. */
	caret_move(-ED_INFTY, -ED_INFTY, dir_before);

	/* Place selection start tag. */
	tag_get_pt(&pane.caret_pos, &pt);
	sheet_place_tag(&doc.sh, &pt, &pane.sel_start);

	/* Initial display */
	cursor_visible = true;

	cursor_hide();
	console_clear(con);
	pane_text_display();
	pane_status_display();
	if (new_file && doc.file_name != NULL)
		status_display("File not found. Starting empty file.");
	pane_caret_display();
	cursor_show();

	done = false;

	while (!done) {
		console_get_kbd_event(con, &ev);
		pane.rflags = 0;

		if (ev.type == KEY_PRESS) {
			/* Handle key press. */
			if (((ev.mods & KM_ALT) == 0) &&
			    ((ev.mods & KM_SHIFT) == 0) &&
			     (ev.mods & KM_CTRL) != 0) {
				key_handle_ctrl(&ev);
			} else if (((ev.mods & KM_ALT) == 0) &&
			    ((ev.mods & KM_CTRL) == 0) &&
			     (ev.mods & KM_SHIFT) != 0) {
				key_handle_shift(&ev);
			} else if ((ev.mods & (KM_CTRL | KM_ALT | KM_SHIFT)) == 0) {
				key_handle_unmod(&ev);
			}
		}

		/* Redraw as necessary. */

		cursor_hide();

		if (pane.rflags & REDRAW_TEXT)
			pane_text_display();
		if (pane.rflags & REDRAW_ROW)
			pane_row_display();
		if (pane.rflags & REDRAW_STATUS)
			pane_status_display();
		if (pane.rflags & REDRAW_CARET)
			pane_caret_display();

		cursor_show();
	}

	console_clear(con);

	return 0;
}