From 9e7c1737f2a0055841e03b740f3e21bd2f5d573a Mon Sep 17 00:00:00 2001
From: Bryan Mayland <bmayland@capnbry.net>
Date: Thu, 16 Oct 2025 15:31:22 -0400
Subject: [PATCH] Allow doubletap of a main screen widget to fullscreen it

---
 radio/src/lua/lua_widget.cpp | 25 ++++++++++++++++++++++---
 radio/src/lua/lua_widget.h   |  3 +++
 2 files changed, 25 insertions(+), 3 deletions(-)

diff --git a/radio/src/lua/lua_widget.cpp b/radio/src/lua/lua_widget.cpp
index 455a295fb79..ce404850516 100644
--- a/radio/src/lua/lua_widget.cpp
+++ b/radio/src/lua/lua_widget.cpp
@@ -274,12 +274,31 @@ LuaWidget::~LuaWidget()
 
 void LuaWidget::onClicked()
 {
-  if (!fullscreen) {
-    ButtonBase::onClicked();
+  if (fullscreen) {
+    LuaScriptManager::onClickedEvent();
     return;
   }
 
-  LuaScriptManager::onClickedEvent();
+  // DoubleClick to enter fullscreen mode
+  constexpr uint32_t DOUBLETAP_TIMEOUT_MS = 500;
+
+  uint32_t now = time_get_ms();
+  if (now - tapLastMs > DOUBLETAP_TIMEOUT_MS) {
+    tapCount = 0;
+  }
+  tapLastMs = now;
+  ++tapCount;
+
+  if (tapCount < 2) {
+    Widget::onClicked();
+  } else {
+    onDoubleClicked();
+  }
+}
+
+void LuaWidget::onDoubleClicked()
+{
+  setFullscreen(true);
 }
 
 void LuaWidget::onCancel()
diff --git a/radio/src/lua/lua_widget.h b/radio/src/lua/lua_widget.h
index 8efb3f6d9f2..ba574f5ff52 100644
--- a/radio/src/lua/lua_widget.h
+++ b/radio/src/lua/lua_widget.h
@@ -149,9 +149,12 @@ class LuaWidget : public Widget, public LuaScriptManager
   int optionsDataRef;
   char* errorMessage;
   bool refreshed = false;
+  uint32_t tapLastMs = 0;
+  uint32_t tapCount = 0;
 
   // Window interface
   void onClicked() override;
+  void onDoubleClicked();
   void onCancel() override;
   void checkEvents() override;
   void onEvent(event_t event) override;