From 7318f53fd8949d8625f498ccb2dd07e501e658b2 Mon Sep 17 00:00:00 2001
From: Robin Howard <robin@rhoward.id.au>
Date: Tue, 7 Nov 2023 15:46:46 +1100
Subject: haptics: buzz on boot, and when changing focus of items.

---
 src/ui/lvgl_task.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'src/ui/lvgl_task.cpp')

diff --git a/src/ui/lvgl_task.cpp b/src/ui/lvgl_task.cpp
index 2c4f01ca..817ed185 100644
--- a/src/ui/lvgl_task.cpp
+++ b/src/ui/lvgl_task.cpp
@@ -49,6 +49,8 @@ namespace ui {
 
 [[maybe_unused]] static const char* kTag = "ui_task";
 
+static auto group_focus_cb(lv_group_t *group) -> void;
+
 UiTask::UiTask() {}
 
 UiTask::~UiTask() {
@@ -75,6 +77,7 @@ auto UiTask::Main() -> void {
     if (input_ && current_screen_->group() != current_group) {
       current_group = current_screen_->group();
       lv_indev_set_group(input_->registration(), current_group);
+      lv_group_set_focus_cb(current_group, &group_focus_cb);
     }
 
     if (current_screen_) {
@@ -98,4 +101,11 @@ auto UiTask::Start() -> UiTask* {
   return ret;
 }
 
+static auto group_focus_cb(lv_group_t *group) -> void {
+  // TODO(robin): we probably want to vary this, configure this, etc
+  events::System().Dispatch(system_fsm::HapticTrigger{
+    .effect = drivers::Haptics::Effect::kMediumClick1_100Pct,
+  });
+}
+
 }  // namespace ui
-- 
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