From 0ae4d0621237145793d81a21e114081318e580cf Mon Sep 17 00:00:00 2001
From: Benjamin Valentin <benjamin.valentin@ml-pa.com>
Date: Sat, 20 Aug 2022 15:40:40 +0200
Subject: [PATCH] tests/pkg_lvgl_touch: randomize button position on click

---
 tests/pkg_lvgl_touch/Makefile        |  2 ++
 tests/pkg_lvgl_touch/app.config.test |  3 +++
 tests/pkg_lvgl_touch/main.c          | 13 ++++++++++---
 3 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/tests/pkg_lvgl_touch/Makefile b/tests/pkg_lvgl_touch/Makefile
index f2a464affd..e4e7d23f60 100644
--- a/tests/pkg_lvgl_touch/Makefile
+++ b/tests/pkg_lvgl_touch/Makefile
@@ -15,6 +15,8 @@ USEMODULE += lvgl_extra_theme_default
 # uncomment the following to enable growing button (needs more RAM)
 # USEMODULE += lvgl_extra_theme_default_grow
 
+USEMODULE += random
+
 # SDL requires more stack
 ifeq (native,$(BOARD))
   CFLAGS += -DTHREAD_STACKSIZE_MAIN=64*1024
diff --git a/tests/pkg_lvgl_touch/app.config.test b/tests/pkg_lvgl_touch/app.config.test
index 0bcef0b3a7..99bcfce639 100644
--- a/tests/pkg_lvgl_touch/app.config.test
+++ b/tests/pkg_lvgl_touch/app.config.test
@@ -9,6 +9,9 @@ CONFIG_MODULE_LVGL_EXTRA_THEME_DEFAULT=y
 # Add touch capabilities
 CONFIG_MODULE_LVGL_CONTRIB_TOUCH=y
 
+# enable random positioning
+CONFIG_MODULE_RANDOM=y
+
 # Uncomment the following Kconfig symbols to configure LVGL using Kconfig. This
 # requires the LVGL package to be already downloaded (e.g. built once already)
 # LVGL specific configuration
diff --git a/tests/pkg_lvgl_touch/main.c b/tests/pkg_lvgl_touch/main.c
index 9ba3982e0e..ed532c649d 100644
--- a/tests/pkg_lvgl_touch/main.c
+++ b/tests/pkg_lvgl_touch/main.c
@@ -24,13 +24,22 @@
 #include "lvgl_riot.h"
 
 #include "disp_dev.h"
+#include "random.h"
 
+static lv_obj_t *btn;
+static const lv_coord_t x_size = 100;
+static const lv_coord_t y_size = 50;
 
 static void btn_event_cb(lv_event_t *event)
 {
     lv_event_code_t code = lv_event_get_code(event);
     if (code == LV_EVENT_CLICKED) {
         puts("Button clicked!");
+
+        lv_coord_t x_pos = random_uint32_range(0, lv_obj_get_width(lv_scr_act()) - x_size);
+        lv_coord_t y_pos = random_uint32_range(0, lv_obj_get_height(lv_scr_act()) - y_size);
+
+        lv_obj_set_pos(btn, x_pos, y_pos);
     }
 }
 
@@ -40,11 +49,9 @@ int main(void)
     disp_dev_backlight_on();
 
     /* Add a button to the current screen */
-    lv_obj_t *btn = lv_btn_create(lv_scr_act());
+    btn = lv_btn_create(lv_scr_act());
 
     /* Set the button position and size */
-    lv_coord_t x_size = 100;
-    lv_coord_t y_size = 50;
     lv_coord_t x_pos = (lv_obj_get_width(lv_scr_act()) - x_size) / 2;
     lv_coord_t y_pos = (lv_obj_get_height(lv_scr_act()) - y_size) / 2;
     lv_obj_set_pos(btn, x_pos, y_pos);