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Commit a9a4ab74 authored by Arnaldo Carvalho de Melo's avatar Arnaldo Carvalho de Melo
Browse files

perf tui: Add help window to show key associations 



Suggested-by: default avatarIngo 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: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent a308f3a8

tools/perf/util/newt.c

+60 −0
Original line number Diff line number Diff line
@@ -167,6 +167,48 @@ static int popup_menu(int argc, char * const argv[]) 
	return rc;

}



static int ui__help_window(const char *text)

{

	struct newtExitStruct es;

	newtComponent tb, form = newt_form__new();

	int rc = -1;

	int max_len = 0, nr_lines = 0;

	const char *t;



	if (form == NULL)

		return -1;



	t = text;

	while (1) {

		const char *sep = strchr(t, '\n');

		int len;



		if (sep == NULL)

			sep = strchr(t, '\0');

		len = sep - t;

		if (max_len < len)

			max_len = len;

		++nr_lines;

		if (*sep == '\0')

			break;

		t = sep + 1;

	}



	tb = newtTextbox(0, 0, max_len, nr_lines, 0);

	if (tb == NULL)

		goto out_destroy_form;



	newtTextboxSetText(tb, text);

	newtFormAddComponent(form, tb);

	newtCenteredWindow(max_len, nr_lines, NULL);

	newtFormRun(form, &es);

	newtPopWindow();

	rc = 0;

out_destroy_form:

	newtFormDestroy(form);

	return rc;

}



static bool dialog_yesno(const char *msg)

{

	/* newtWinChoice should really be accepting const char pointers... */
@@ -756,6 +798,10 @@ static int hist_browser__populate(struct hist_browser *self, struct hists *hists 
	newtFormAddHotKey(self->form, 'd');

	newtFormAddHotKey(self->form, 'T');

	newtFormAddHotKey(self->form, 't');

	newtFormAddHotKey(self->form, '?');

	newtFormAddHotKey(self->form, 'H');

	newtFormAddHotKey(self->form, 'h');

	newtFormAddHotKey(self->form, NEWT_KEY_F1);

	newtFormAddHotKey(self->form, NEWT_KEY_RIGHT);

	newtFormAddComponents(self->form, self->tree, NULL);

	self->selection = newt__symbol_tree_get_current(self->tree);
@@ -842,6 +888,9 @@ int hists__browse(struct hists *self, const char *helpline, const char *input_na 
		dso = browser->selection->map ? browser->selection->map->dso : NULL;



		if (es.reason == NEWT_EXIT_HOTKEY) {

			if (es.u.key == NEWT_KEY_F1)

				goto do_help;



			switch (toupper(es.u.key)) {

			case 'A':

				goto do_annotate;
@@ -849,6 +898,17 @@ int hists__browse(struct hists *self, const char *helpline, const char *input_na 
				goto zoom_dso;

			case 'T':

				goto zoom_thread;

			case 'H':

			case '?':

do_help:

				ui__help_window("->        Zoom into DSO/Threads & Annotate current symbol\n"

						"<-        Zoom out\n"

						"a         Annotate current symbol\n"

						"h/?/F1    Show this window\n"

						"d         Zoom into current DSO\n"

						"t         Zoom into current Thread\n"

						"q/CTRL+C  Exit browser");

				continue;

			default:;

			}

			if (toupper(es.u.key) == 'Q' ||