🚸 Ignore first click on asleep LCD

Author: thinkyhead

Marlin/src/lcd/dogm/marlinui_DOGM.cpp

@@ -390,8 +390,9 @@ void MarlinUI::clear_for_drawing() {
 }
 
 #if HAS_DISPLAY_SLEEP
+  static bool asleep = false;
+  bool MarlinUI::display_is_asleep() { return asleep; }
   void MarlinUI::sleep_display(const bool sleep/*=true*/) {
-    static bool asleep = false;
     if (asleep != sleep) {
       sleep ? u8g.sleepOn() : u8g.sleepOff();
       asleep = sleep;

Marlin/src/lcd/marlinui.cpp

@@ -957,11 +957,13 @@ void MarlinUI::init() {
       // If the action button is pressed...
       static bool wait_for_unclick; // = false
 
+      // Set lcd_clicked for most clicks.
+      // Ignore the click when clearing wait_for_user or waking the screen.
       auto do_click = [&]{
-        wait_for_unclick = true;                        //  - Set debounce flag to ignore continuous clicks
-        lcd_clicked = !wait_for_user;                   //  - Keep the click if not waiting for a user-click
-        wait_for_user = false;                          //  - Any click clears wait for user
-        quick_feedback();                               //  - Always make a click sound
+        wait_for_unclick = true;
+        lcd_clicked = !wait_for_user && !display_is_asleep();
+        wait_for_user = false;
+        quick_feedback();
       };
 
       #if HAS_TOUCH_BUTTONS

Marlin/src/lcd/marlinui.h

@@ -305,6 +305,7 @@ class MarlinUI {
   #endif
 
   // Sleep or wake the display (e.g., by turning the backlight off/on).
+  static bool display_is_asleep() IF_DISABLED(HAS_DISPLAY_SLEEP, { return false; });
   static void sleep_display(const bool=true) IF_DISABLED(HAS_DISPLAY_SLEEP, {});
   static void wake_display() { sleep_display(false); }
 

Marlin/src/lcd/tft/touch.cpp

@@ -313,6 +313,7 @@ bool Touch::get_point(int16_t * const x, int16_t * const y) {
     next_sleep_ms = ui.sleep_timeout_minutes ? millis() + MIN_TO_MS(ui.sleep_timeout_minutes) : 0;
   }
 
+  bool MarlinUI::display_is_asleep() { return touch.isSleeping(); }
   void MarlinUI::sleep_display(const bool sleep/*=true*/) {
     if (!sleep) touch.wakeUp();
   }

Marlin/src/lcd/touch/touch_buttons.cpp

@@ -153,6 +153,9 @@ uint8_t TouchButtons::read_buttons() {
     next_sleep_ms = ui.sleep_timeout_minutes ? millis() + MIN_TO_MS(ui.sleep_timeout_minutes) : 0;
   }
 
+  bool MarlinUI::display_is_asleep() {
+    return touchBt.isSleeping();
+  }
   void MarlinUI::sleep_display(const bool sleep/*=true*/) {
     if (!sleep) touchBt.wakeUp();
   }