more function reordering, plus comment fixes
git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@3074 35c25a1d-7b9e-4130-9fde-d3aeb78583b8master
David Lawrence Ramsey
parent
c359301955
commit
d420b5a50c
270
src/help.c
270
src/help.c
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@ -34,6 +34,141 @@
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static char *help_text = NULL;
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/* The text displayed in the help window. */
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/* Our dynamic, shortcut-list-compliant help function. */
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void do_help(void)
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{
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int line = 0;
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/* The line number in help_text of the first displayed help
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* line. This variable is zero-based. */
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bool no_more = FALSE;
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/* no_more means the end of the help text is shown, so don't go
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* down any more. */
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int kbinput = ERR;
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bool meta_key, func_key;
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bool old_no_help = ISSET(NO_HELP);
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#ifndef DISABLE_MOUSE
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const shortcut *oldshortcut = currshortcut;
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/* We will set currshortcut to allow clicking on the help
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* screen's shortcut list. */
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#endif
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curs_set(0);
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blank_edit();
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wattroff(bottomwin, A_REVERSE);
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blank_statusbar();
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/* Set help_text as the string to display. */
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help_init();
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assert(help_text != NULL);
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#ifndef DISABLE_MOUSE
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/* Set currshortcut to allow clicking on the help screen's shortcut
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* list, after help_init() is called. */
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currshortcut = help_list;
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#endif
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if (ISSET(NO_HELP)) {
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/* Make sure that the help screen's shortcut list will actually
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* be displayed. */
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UNSET(NO_HELP);
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window_init();
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}
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bottombars(help_list);
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do {
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int i;
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int old_line = line;
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/* We redisplay the help only if it moved. */
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const char *ptr = help_text;
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switch (kbinput) {
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#ifndef DISABLE_MOUSE
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case KEY_MOUSE:
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{
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int mouse_x, mouse_y;
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get_mouseinput(&mouse_x, &mouse_y, TRUE);
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}
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break;
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#endif
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case NANO_PREVPAGE_KEY:
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case NANO_PREVPAGE_FKEY:
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if (line > 0) {
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line -= editwinrows - 2;
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if (line < 0)
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line = 0;
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}
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break;
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case NANO_NEXTPAGE_KEY:
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case NANO_NEXTPAGE_FKEY:
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if (!no_more)
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line += editwinrows - 2;
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break;
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case NANO_PREVLINE_KEY:
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if (line > 0)
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line--;
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break;
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case NANO_NEXTLINE_KEY:
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if (!no_more)
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line++;
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break;
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}
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if (kbinput == NANO_REFRESH_KEY)
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total_redraw();
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else {
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if (line == old_line && kbinput != ERR)
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goto skip_redisplay;
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blank_edit();
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}
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/* Calculate where in the text we should be, based on the
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* page. */
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for (i = 0; i < line; i++) {
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ptr += help_line_len(ptr);
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if (*ptr == '\n')
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ptr++;
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}
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for (i = 0; i < editwinrows && *ptr != '\0'; i++) {
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size_t j = help_line_len(ptr);
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mvwaddnstr(edit, i, 0, ptr, j);
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ptr += j;
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if (*ptr == '\n')
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ptr++;
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}
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no_more = (*ptr == '\0');
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skip_redisplay:
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kbinput = get_kbinput(edit, &meta_key, &func_key);
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} while (kbinput != NANO_EXIT_KEY && kbinput != NANO_EXIT_FKEY);
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#ifndef DISABLE_MOUSE
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currshortcut = oldshortcut;
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#endif
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if (old_no_help) {
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blank_bottombars();
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wnoutrefresh(bottomwin);
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SET(NO_HELP);
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window_init();
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} else
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bottombars(currshortcut);
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curs_set(1);
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edit_refresh();
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/* The help_init() at the beginning allocated help_text. Since
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* help_text has now been written to the screen, we don't need it
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* anymore. */
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free(help_text);
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help_text = NULL;
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}
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/* This function allocates help_text, and stores the help string in it.
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* help_text should be NULL initially. */
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void help_init(void)
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@ -356,141 +491,6 @@ void help_init(void)
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assert(strlen(help_text) <= allocsize + 1);
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}
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/* Our dynamic, shortcut-list-compliant help function. */
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void do_help(void)
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{
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int line = 0;
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/* The line number in help_text of the first displayed help
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* line. This variable is zero-based. */
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bool no_more = FALSE;
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/* no_more means the end of the help text is shown, so don't go
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* down any more. */
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int kbinput = ERR;
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bool meta_key, func_key;
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bool old_no_help = ISSET(NO_HELP);
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#ifndef DISABLE_MOUSE
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const shortcut *oldshortcut = currshortcut;
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/* We will set currshortcut to allow clicking on the help
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* screen's shortcut list. */
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#endif
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curs_set(0);
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blank_edit();
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wattroff(bottomwin, A_REVERSE);
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blank_statusbar();
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/* Set help_text as the string to display. */
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help_init();
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assert(help_text != NULL);
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#ifndef DISABLE_MOUSE
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/* Set currshortcut to allow clicking on the help screen's shortcut
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* list, after help_init() is called. */
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currshortcut = help_list;
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#endif
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if (ISSET(NO_HELP)) {
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/* Make sure that the help screen's shortcut list will actually
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* be displayed. */
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UNSET(NO_HELP);
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window_init();
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}
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bottombars(help_list);
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do {
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int i;
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int old_line = line;
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/* We redisplay the help only if it moved. */
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const char *ptr = help_text;
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switch (kbinput) {
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#ifndef DISABLE_MOUSE
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case KEY_MOUSE:
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{
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int mouse_x, mouse_y;
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get_mouseinput(&mouse_x, &mouse_y, TRUE);
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}
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break;
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#endif
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case NANO_PREVPAGE_KEY:
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case NANO_PREVPAGE_FKEY:
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if (line > 0) {
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line -= editwinrows - 2;
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if (line < 0)
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line = 0;
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}
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break;
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case NANO_NEXTPAGE_KEY:
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case NANO_NEXTPAGE_FKEY:
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if (!no_more)
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line += editwinrows - 2;
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break;
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case NANO_PREVLINE_KEY:
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if (line > 0)
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line--;
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break;
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case NANO_NEXTLINE_KEY:
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if (!no_more)
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line++;
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break;
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}
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if (kbinput == NANO_REFRESH_KEY)
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total_redraw();
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else {
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if (line == old_line && kbinput != ERR)
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goto skip_redisplay;
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blank_edit();
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}
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/* Calculate where in the text we should be, based on the
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* page. */
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for (i = 0; i < line; i++) {
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ptr += help_line_len(ptr);
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if (*ptr == '\n')
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ptr++;
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}
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for (i = 0; i < editwinrows && *ptr != '\0'; i++) {
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size_t j = help_line_len(ptr);
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mvwaddnstr(edit, i, 0, ptr, j);
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ptr += j;
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if (*ptr == '\n')
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ptr++;
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}
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no_more = (*ptr == '\0');
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skip_redisplay:
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kbinput = get_kbinput(edit, &meta_key, &func_key);
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} while (kbinput != NANO_EXIT_KEY && kbinput != NANO_EXIT_FKEY);
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#ifndef DISABLE_MOUSE
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currshortcut = oldshortcut;
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#endif
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if (old_no_help) {
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blank_bottombars();
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wnoutrefresh(bottomwin);
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SET(NO_HELP);
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window_init();
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} else
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bottombars(currshortcut);
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curs_set(1);
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edit_refresh();
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/* The help_init() at the beginning allocated help_text. Since
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* help_text has now been written to the screen, we don't need it
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* anymore. */
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free(help_text);
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help_text = NULL;
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}
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/* Calculate the next line of help_text, starting at ptr. */
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size_t help_line_len(const char *ptr)
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{
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@ -807,10 +807,11 @@ int nanogetstr(bool allow_tabs, const char *curranswer,
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return kbinput;
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}
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/* Ask a question on the statusbar. Answer will be stored in answer
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* global. Returns -1 on aborted enter, -2 on a blank string, and 0
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* otherwise, the valid shortcut key caught. curranswer is any editable
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* text that we want to put up by default.
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/* Ask a question on the statusbar. The prompt will be stored in
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* the static prompt, which should be NULL initially, and the answer
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* will be stored in the answer global. Returns -1 on aborted enter, -2
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* on a blank string, and 0 otherwise, the valid shortcut key caught.
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* curranswer is any editable text that we want to put up by default.
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*
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* The allow_tabs parameter indicates whether we should allow tabs to be
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* interpreted. */
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@ -312,8 +312,8 @@ void thanks_for_all_the_fish(void);
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/* Public functions in help.c. */
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#ifndef DISABLE_HELP
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void help_init(void);
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void do_help(void);
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void help_init(void);
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size_t help_line_len(const char *ptr);
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#endif
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