perf tui: Add help window to show key associations
Suggested-by: Ingo Molnar <mingo@elte.hu> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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@ -167,6 +167,48 @@ out_destroy_form:
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return rc;
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}
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static int ui__help_window(const char *text)
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{
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struct newtExitStruct es;
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newtComponent tb, form = newt_form__new();
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int rc = -1;
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int max_len = 0, nr_lines = 0;
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const char *t;
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if (form == NULL)
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return -1;
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t = text;
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while (1) {
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const char *sep = strchr(t, '\n');
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int len;
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if (sep == NULL)
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sep = strchr(t, '\0');
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len = sep - t;
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if (max_len < len)
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max_len = len;
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++nr_lines;
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if (*sep == '\0')
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break;
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t = sep + 1;
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}
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tb = newtTextbox(0, 0, max_len, nr_lines, 0);
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if (tb == NULL)
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goto out_destroy_form;
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newtTextboxSetText(tb, text);
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newtFormAddComponent(form, tb);
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newtCenteredWindow(max_len, nr_lines, NULL);
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newtFormRun(form, &es);
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newtPopWindow();
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rc = 0;
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out_destroy_form:
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newtFormDestroy(form);
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return rc;
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}
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static bool dialog_yesno(const char *msg)
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{
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/* newtWinChoice should really be accepting const char pointers... */
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@ -756,6 +798,10 @@ static int hist_browser__populate(struct hist_browser *self, struct hists *hists
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newtFormAddHotKey(self->form, 'd');
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newtFormAddHotKey(self->form, 'T');
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newtFormAddHotKey(self->form, 't');
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newtFormAddHotKey(self->form, '?');
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newtFormAddHotKey(self->form, 'H');
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newtFormAddHotKey(self->form, 'h');
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newtFormAddHotKey(self->form, NEWT_KEY_F1);
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newtFormAddHotKey(self->form, NEWT_KEY_RIGHT);
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newtFormAddComponents(self->form, self->tree, NULL);
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self->selection = newt__symbol_tree_get_current(self->tree);
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@ -842,6 +888,9 @@ int hists__browse(struct hists *self, const char *helpline, const char *input_na
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dso = browser->selection->map ? browser->selection->map->dso : NULL;
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if (es.reason == NEWT_EXIT_HOTKEY) {
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if (es.u.key == NEWT_KEY_F1)
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goto do_help;
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switch (toupper(es.u.key)) {
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case 'A':
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goto do_annotate;
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@ -849,6 +898,17 @@ int hists__browse(struct hists *self, const char *helpline, const char *input_na
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goto zoom_dso;
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case 'T':
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goto zoom_thread;
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case 'H':
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case '?':
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do_help:
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ui__help_window("-> Zoom into DSO/Threads & Annotate current symbol\n"
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"<- Zoom out\n"
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"a Annotate current symbol\n"
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"h/?/F1 Show this window\n"
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"d Zoom into current DSO\n"
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"t Zoom into current Thread\n"
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"q/CTRL+C Exit browser");
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continue;
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default:;
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}
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if (toupper(es.u.key) == 'Q' ||
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