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Diffstat (limited to 'test/dup_field.c')
| -rw-r--r-- | test/dup_field.c | 394 |
1 files changed, 394 insertions, 0 deletions
diff --git a/test/dup_field.c b/test/dup_field.c new file mode 100644 index 000000000000..5ca67f0b0f5a --- /dev/null +++ b/test/dup_field.c @@ -0,0 +1,394 @@ +/**************************************************************************** + * Copyright 2020 Thomas E. Dickey * + * * + * Permission is hereby granted, free of charge, to any person obtaining a * + * copy of this software and associated documentation files (the * + * "Software"), to deal in the Software without restriction, including * + * without limitation the rights to use, copy, modify, merge, publish, * + * distribute, distribute with modifications, sublicense, and/or sell * + * copies of the Software, and to permit persons to whom the Software is * + * furnished to do so, subject to the following conditions: * + * * + * The above copyright notice and this permission notice shall be included * + * in all copies or substantial portions of the Software. * + * * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * + * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * + * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * + * * + * Except as contained in this notice, the name(s) of the above copyright * + * holders shall not be used in advertising or otherwise to promote the * + * sale, use or other dealings in this Software without prior written * + * authorization. * + ****************************************************************************/ +/* + * $Id: dup_field.c,v 1.1 2020/03/21 19:28:36 tom Exp $ + * + * Demonstrate move_field(). + */ + +#include <test.priv.h> + +#if USE_LIBFORM + +#include <edit_field.h> +#include <popup_msg.h> + +#define MY_DEMO EDIT_FIELD('f') + +static char empty[] = ""; +static FIELD *all_fields[100]; + +/* *INDENT-OFF* */ +static struct { + int code; + int result; + const char *help; +} commands[] = { + { CTRL('A'), REQ_BEG_FIELD, "go to beginning of field" }, + { CTRL('D'), REQ_DOWN_FIELD, "move downward to field" }, + { CTRL('E'), REQ_END_FIELD, "go to end of field" }, + { CTRL('G'), MY_DEMO, "move current field with cursor keys" }, + { CTRL('H'), REQ_DEL_PREV, "delete previous character" }, + { CTRL('I'), REQ_NEXT_FIELD, "go to next field" }, + { CTRL('K'), REQ_CLR_EOF, "clear to end of field" }, + { CTRL('N'), REQ_NEXT_FIELD, "go to next field" }, + { CTRL('P'), REQ_PREV_FIELD, "go to previous field" }, + { CTRL('Q'), MY_QUIT, "exit form" }, + { CTRL('U'), REQ_UP_FIELD, "move upward to field" }, + { CTRL('W'), REQ_NEXT_WORD, "go to next word" }, + { CTRL('X'), REQ_CLR_FIELD, "clear field" }, + { CTRL('['), MY_QUIT, "exit form" }, + { KEY_F(1), MY_HELP, "show this screen", }, + { KEY_BACKSPACE, REQ_DEL_PREV, "delete previous character" }, + { KEY_BTAB, REQ_PREV_FIELD, "go to previous field" }, + { KEY_DOWN, REQ_DOWN_CHAR, "move down 1 character" }, + { KEY_END, REQ_LAST_FIELD, "go to last field" }, + { KEY_HOME, REQ_FIRST_FIELD, "go to first field" }, + { KEY_LEFT, REQ_LEFT_CHAR, "move left 1 character" }, + { KEY_NEXT, REQ_NEXT_FIELD, "go to next field" }, + { KEY_PREVIOUS, REQ_PREV_FIELD, "go to previous field" }, + { KEY_RIGHT, REQ_RIGHT_CHAR, "move right 1 character" }, + { KEY_UP, REQ_UP_CHAR, "move up 1 character" } +}; +/* *INDENT-ON* */ + +static void +my_help_edit_field(void) +{ + int used = 0; + unsigned n; + char **msgs = typeCalloc(char *, 3 + SIZEOF(commands)); + + msgs[used++] = strdup("Defined form edit/traversal keys:"); + for (n = 0; n < SIZEOF(commands); ++n) { + char *msg; + const char *name; + const char *code = keyname(commands[n].code); + size_t need = 5; +#ifdef NCURSES_VERSION + if ((name = form_request_name(commands[n].result)) == 0) +#endif + name = commands[n].help; + need = 5 + strlen(code) + strlen(name); + msg = typeMalloc(char, need); + _nc_SPRINTF(msg, _nc_SLIMIT(need) "%s -- %s", code, name); + msgs[used++] = msg; + } + msgs[used++] = + strdup("Arrow keys move within a field as you would expect."); + msgs[used] = 0; + popup_msg2(stdscr, msgs); + for (n = 0; msgs[n] != 0; ++n) { + free(msgs[n]); + } + free(msgs); +} + +static void +do_demo(FORM *form) +{ +} + +static FIELD * +make_label(const char *label, int frow, int fcol) +{ + FIELD *f = new_field(1, (int) strlen(label), frow, fcol, 0, 0); + + if (f) { + set_field_buffer(f, 0, label); + set_field_opts(f, (int) ((unsigned) field_opts(f) & ~O_ACTIVE)); + } + return (f); +} + +static FIELD * +make_field(int frow, int fcol, int rows, int cols) +{ + FIELD *f = new_field(rows, cols, frow, fcol, 0, 1); + + if (f) { + set_field_back(f, A_UNDERLINE); + init_edit_field(f, empty); + } + return (f); +} + +static void +erase_form(FORM *f) +{ + WINDOW *w = form_win(f); + WINDOW *s = form_sub(f); + + unpost_form(f); + werase(w); + wrefresh(w); + delwin(s); + delwin(w); +} + +static int +my_form_driver(FORM *form, int c) +{ + switch (c) { + case MY_QUIT: + if (form_driver(form, REQ_VALIDATION) == E_OK) + return (TRUE); + break; + case MY_HELP: + my_help_edit_field(); + break; + case MY_DEMO: + do_demo(form); + break; + default: + beep(); + break; + } + return (FALSE); +} + +static FieldAttrs * +my_field_attrs(FIELD *f) +{ + return (FieldAttrs *) field_userptr(f); +} + +static int +buffer_length(FIELD *f) +{ + return my_field_attrs(f)->row_lengths[0]; +} + +static void +set_buffer_length(FIELD *f, int length) +{ + my_field_attrs(f)->row_lengths[0] = length; +} + +static int +offset_in_field(FORM *form) +{ + FIELD *field = current_field(form); + int currow, curcol; + + form_getyx(form, currow, curcol); + return curcol + currow * (int) field->dcols; +} + +static void +inactive_field(FIELD *f) +{ + set_field_back(f, my_field_attrs(f)->background); +} + +static int +my_edit_field(FORM *form, int *result) +{ + int ch = wgetch(form_win(form)); + int status; + FIELD *before; + unsigned n; + int length; + int before_row; + int before_col; + int before_off = offset_in_field(form); + + form_getyx(form, before_row, before_col); + before = current_field(form); + set_field_back(before, A_NORMAL); + if (ch <= KEY_MAX) { + set_field_back(before, A_REVERSE); + } else if (ch <= MAX_FORM_COMMAND) { + inactive_field(before); + } + + *result = ch; + for (n = 0; n < SIZEOF(commands); ++n) { + if (commands[n].code == ch) { + *result = commands[n].result; + break; + } + } + + status = form_driver(form, *result); + + if (status == E_OK) { + bool modified = TRUE; + + length = buffer_length(before); + if (length < before_off) + length = before_off; + switch (*result) { + case REQ_CLR_EOF: + length = before_off; + break; + case REQ_CLR_EOL: + if ((int) (before_row + 1) == (int) (before->rows)) + length = before_off; + break; + case REQ_CLR_FIELD: + length = 0; + break; + case REQ_DEL_CHAR: + if (length > before_off) + --length; + break; + case REQ_DEL_PREV: + if (length > 0) { + if (before_col > 0) { + --length; + } else if (before_row > 0) { + length -= (int) before->cols + before_col; + } + } + break; + case REQ_NEW_LINE: + length += (int) before->cols; + break; + + default: + modified = (ch < MIN_FORM_COMMAND + && isprint(ch)); + break; + } + + /* + * If we do not force a re-validation, then field_buffer 0 will + * be lagging by one character. + */ + if (modified && form_driver(form, REQ_VALIDATION) == E_OK && *result + < MIN_FORM_COMMAND) + ++length; + + set_buffer_length(before, length); + } + + if (current_field(form) != before) + inactive_field(before); + return status; +} + +static void +demo_forms(void) +{ + FORM *form; + int c; + unsigned n = 0; + const char *fname; + + /* describe the form */ + all_fields[n++] = make_label("Sample Form", 0, 15); + + fname = "Last Name"; + all_fields[n++] = make_label(fname, 2, 0); + all_fields[n++] = make_field(3, 0, 1, 18); + set_field_type(all_fields[n - 1], TYPE_ALPHA, 1); + + fname = "First Name"; + all_fields[n++] = make_label(fname, 2, 20); + all_fields[n++] = make_field(3, 20, 1, 12); + set_field_type(all_fields[n - 1], TYPE_ALPHA, 1); + + fname = "Middle Name"; + all_fields[n++] = make_label(fname, 2, 34); + all_fields[n++] = make_field(3, 34, 1, 12); + set_field_type(all_fields[n - 1], TYPE_ALPHA, 1); + + fname = "Comments"; + all_fields[n++] = make_label(fname, 5, 0); + all_fields[n++] = make_field(6, 0, 4, 46); + init_edit_field(all_fields[n - 1], empty); + + all_fields[n] = (FIELD *) 0; + + if ((form = new_form(all_fields)) != 0) { + int finished = 0; + + post_form(form); + + while (!finished) { + switch (my_edit_field(form, &c)) { + case E_OK: + break; + case E_UNKNOWN_COMMAND: + finished = my_form_driver(form, c); + break; + default: + beep(); + break; + } + } + + erase_form(form); + + free_form(form); + } + for (c = 0; all_fields[c] != 0; c++) { + free_edit_field(all_fields[c]); + free_field(all_fields[c]); + } + noraw(); + nl(); +} + +int +main(void) +{ + setlocale(LC_ALL, ""); + + initscr(); + cbreak(); + noecho(); + raw(); + nonl(); /* lets us read ^M's */ + intrflush(stdscr, FALSE); + keypad(stdscr, TRUE); + + if (has_colors()) { + start_color(); + init_pair(1, COLOR_WHITE, COLOR_BLUE); + init_pair(2, COLOR_GREEN, COLOR_BLACK); + init_pair(3, COLOR_CYAN, COLOR_BLACK); + bkgd((chtype) COLOR_PAIR(1)); + refresh(); + } + + demo_forms(); + + endwin(); + ExitProgram(EXIT_SUCCESS); +} + +#else +int +main(void) +{ + printf("This program requires the curses form library\n"); + ExitProgram(EXIT_FAILURE); +} +#endif |