diff options
Diffstat (limited to 'util/kconfig/lxdialog/textbox.c')
| -rw-r--r-- | util/kconfig/lxdialog/textbox.c | 267 |
1 files changed, 125 insertions, 142 deletions
diff --git a/util/kconfig/lxdialog/textbox.c b/util/kconfig/lxdialog/textbox.c index 4e339b1266..bc4d4fb1dc 100644 --- a/util/kconfig/lxdialog/textbox.c +++ b/util/kconfig/lxdialog/textbox.c @@ -8,19 +8,137 @@ #include "dialog.h" -static void back_lines(int n); -static void print_page(WINDOW *win, int height, int width, update_text_fn - update_text, void *data); -static void print_line(WINDOW *win, int row, int width); -static char *get_line(void); -static void print_position(WINDOW * win); - static int hscroll; static int begin_reached, end_reached, page_length; static char *buf; static char *page; /* + * Go back 'n' lines in text. Called by dialog_textbox(). + * 'page' will be updated to point to the desired line in 'buf'. + */ +static void back_lines(int n) +{ + int i; + + begin_reached = 0; + /* Go back 'n' lines */ + for (i = 0; i < n; i++) { + if (*page == '\0') { + if (end_reached) { + end_reached = 0; + continue; + } + } + if (page == buf) { + begin_reached = 1; + return; + } + page--; + do { + if (page == buf) { + begin_reached = 1; + return; + } + page--; + } while (*page != '\n'); + page++; + } +} + +/* + * Return current line of text. Called by dialog_textbox() and print_line(). + * 'page' should point to start of current line before calling, and will be + * updated to point to start of next line. + */ +static char *get_line(void) +{ + int i = 0; + static char line[MAX_LEN + 1]; + + end_reached = 0; + while (*page != '\n') { + if (*page == '\0') { + end_reached = 1; + break; + } else if (i < MAX_LEN) + line[i++] = *(page++); + else { + /* Truncate lines longer than MAX_LEN characters */ + if (i == MAX_LEN) + line[i++] = '\0'; + page++; + } + } + if (i <= MAX_LEN) + line[i] = '\0'; + if (!end_reached) + page++; /* move past '\n' */ + + return line; +} + +/* + * Print a new line of text. + */ +static void print_line(WINDOW *win, int row, int width) +{ + char *line; + + line = get_line(); + line += MIN(strlen(line), hscroll); /* Scroll horizontally */ + wmove(win, row, 0); /* move cursor to correct line */ + waddch(win, ' '); + waddnstr(win, line, MIN(strlen(line), width - 2)); + + /* Clear 'residue' of previous line */ + wclrtoeol(win); +} + +/* + * Print a new page of text. + */ +static void print_page(WINDOW *win, int height, int width, update_text_fn + update_text, void *data) +{ + int i, passed_end = 0; + + if (update_text) { + char *end; + + for (i = 0; i < height; i++) + get_line(); + end = page; + back_lines(height); + update_text(buf, page - buf, end - buf, data); + } + + page_length = 0; + for (i = 0; i < height; i++) { + print_line(win, i, width); + if (!passed_end) + page_length++; + if (end_reached && !passed_end) + passed_end = 1; + } + wnoutrefresh(win); +} + +/* + * Print current position + */ +static void print_position(WINDOW *win) +{ + int percent; + + wattrset(win, dlg.position_indicator.atr); + wbkgdset(win, dlg.position_indicator.atr & A_COLOR); + percent = (page - buf) * 100 / strlen(buf); + wmove(win, getmaxy(win) - 3, getmaxx(win) - 9); + wprintw(win, "(%3d%%)", percent); +} + +/* * refresh window content */ static void refresh_text_box(WINDOW *dialog, WINDOW *box, int boxh, int boxw, @@ -33,7 +151,6 @@ static void refresh_text_box(WINDOW *dialog, WINDOW *box, int boxh, int boxw, wrefresh(dialog); } - /* * Display text from a file in a dialog box. * @@ -259,137 +376,3 @@ do_resize: *_hscroll = hscroll; return key; } - -/* - * Go back 'n' lines in text. Called by dialog_textbox(). - * 'page' will be updated to point to the desired line in 'buf'. - */ -static void back_lines(int n) -{ - int i; - - begin_reached = 0; - /* Go back 'n' lines */ - for (i = 0; i < n; i++) { - if (*page == '\0') { - if (end_reached) { - end_reached = 0; - continue; - } - } - if (page == buf) { - begin_reached = 1; - return; - } - page--; - do { - if (page == buf) { - begin_reached = 1; - return; - } - page--; - } while (*page != '\n'); - page++; - } -} - -/* - * Print a new page of text. - */ -static void print_page(WINDOW *win, int height, int width, update_text_fn - update_text, void *data) -{ - int i, passed_end = 0; - - if (update_text) { - char *end; - - for (i = 0; i < height; i++) - get_line(); - end = page; - back_lines(height); - update_text(buf, page - buf, end - buf, data); - } - - page_length = 0; - for (i = 0; i < height; i++) { - print_line(win, i, width); - if (!passed_end) - page_length++; - if (end_reached && !passed_end) - passed_end = 1; - } - wnoutrefresh(win); -} - -/* - * Print a new line of text. - */ -static void print_line(WINDOW * win, int row, int width) -{ - char *line; - - line = get_line(); - line += MIN(strlen(line), hscroll); /* Scroll horizontally */ - wmove(win, row, 0); /* move cursor to correct line */ - waddch(win, ' '); - waddnstr(win, line, MIN(strlen(line), width - 2)); - - /* Clear 'residue' of previous line */ -#if OLD_NCURSES - { - int x = getcurx(win); - int i; - for (i = 0; i < width - x; i++) - waddch(win, ' '); - } -#else - wclrtoeol(win); -#endif -} - -/* - * Return current line of text. Called by dialog_textbox() and print_line(). - * 'page' should point to start of current line before calling, and will be - * updated to point to start of next line. - */ -static char *get_line(void) -{ - int i = 0; - static char line[MAX_LEN + 1]; - - end_reached = 0; - while (*page != '\n') { - if (*page == '\0') { - end_reached = 1; - break; - } else if (i < MAX_LEN) - line[i++] = *(page++); - else { - /* Truncate lines longer than MAX_LEN characters */ - if (i == MAX_LEN) - line[i++] = '\0'; - page++; - } - } - if (i <= MAX_LEN) - line[i] = '\0'; - if (!end_reached) - page++; /* move past '\n' */ - - return line; -} - -/* - * Print current position - */ -static void print_position(WINDOW * win) -{ - int percent; - - wattrset(win, dlg.position_indicator.atr); - wbkgdset(win, dlg.position_indicator.atr & A_COLOR); - percent = (page - buf) * 100 / strlen(buf); - wmove(win, getmaxy(win) - 3, getmaxx(win) - 9); - wprintw(win, "(%3d%%)", percent); -} |