From 75fcdd36c96975a5a97b1cd41484cc2498b8c660 Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pj@pehjota.net>
Date: Thu, 27 Jan 2022 20:46:26 -0500
Subject: tk: Add focus indication to radio

---
(limited to 'src/tk/radio.c')

diff --git a/src/tk/radio.c b/src/tk/radio.c
index 9f60bd3..c1facdb 100644
--- a/src/tk/radio.c
+++ b/src/tk/radio.c
@@ -53,6 +53,9 @@ _mftk_radio_state_change(void *user_data, int state)
 	} else {
 		/* Deselect previous check button */
 		mftk_check_set_state(rs->r->children[rs->r->state], SDL_FALSE);
+		/* Update faked focus */
+		rs->r->children[rs->r->state]->focused = SDL_FALSE;
+		rs->r->children[rs->state]->focused = SDL_TRUE;
 		/* Set and announce new state */
 		rs->r->state = rs->state;
 		if (rs->r->action == NULL) {
@@ -73,15 +76,19 @@ _mftk_radio_layout(struct mftk_widget *w)
 }
 
 static void
-_mftk_radio_focus(struct mftk_widget *w __attribute__((__unused__)))
+_mftk_radio_focus(struct mftk_widget *w)
 {
-	/* Nothing to do */
+	struct mftk_radio *r = (struct mftk_radio *) w;
+
+	r->children[r->state]->focused = SDL_TRUE;
 }
 
 static void
-_mftk_radio_defocus(struct mftk_widget *w __attribute__((__unused__)))
+_mftk_radio_defocus(struct mftk_widget *w)
 {
-	/* Nothing to do */
+	struct mftk_radio *r = (struct mftk_radio *) w;
+
+	r->children[r->state]->focused = SDL_FALSE;
 }
 
 static int
@@ -95,12 +102,16 @@ _mftk_radio_key_event(struct mftk_widget *w, SDL_Event *e)
 				case SDLK_UP:
 					mftk_check_set_state(r->children[
 							r->state], SDL_FALSE);
+					r->children[r->state]->focused =
+						SDL_FALSE;
 					--r->state;
 					if (r->state < 0) {
 						r->state = r->options - 1;
 					}
 					mftk_check_set_state(r->children[
 							r->state], SDL_TRUE);
+					r->children[r->state]->focused =
+						SDL_TRUE;
 					if (r->action == NULL) {
 						return 0;
 					}
@@ -108,12 +119,16 @@ _mftk_radio_key_event(struct mftk_widget *w, SDL_Event *e)
 				case SDLK_DOWN:
 					mftk_check_set_state(r->children[
 							r->state], SDL_FALSE);
+					r->children[r->state]->focused =
+						SDL_FALSE;
 					++r->state;
 					if (r->state >= r->options) {
 						r->state = 0;
 					}
 					mftk_check_set_state(r->children[
 							r->state], SDL_TRUE);
+					r->children[r->state]->focused =
+						SDL_TRUE;
 					if (r->action == NULL) {
 						return 0;
 					}
--
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