From 2871b0697481f9152695260c2974031dcb0967d8 Mon Sep 17 00:00:00 2001
From: Gergely Nagy <algernon@keyboard.io>
Date: Sat, 9 Dec 2017 11:35:13 +0100
Subject: [PATCH] Add a way to pause LED modes

Add LEDControl.paused, which we use to pause LED mode updates if true (defaults
to false). This is useful when we want to stop LED modes from updating without
switching to another (like when the host goes to sleep, and we want to turn LEDs
off).

Signed-off-by: Gergely Nagy <algernon@keyboard.io>
---
 src/Kaleidoscope-LEDControl.cpp | 3 ++-
 src/Kaleidoscope-LEDControl.h   | 4 ++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/Kaleidoscope-LEDControl.cpp b/src/Kaleidoscope-LEDControl.cpp
index d170b76b..8f217e0d 100644
--- a/src/Kaleidoscope-LEDControl.cpp
+++ b/src/Kaleidoscope-LEDControl.cpp
@@ -7,6 +7,7 @@ LEDMode *LEDControl::modes[LED_MAX_MODES];
 uint8_t LEDControl::mode;
 uint16_t LEDControl::syncDelay = 16;
 uint32_t LEDControl::syncTimer;
+bool LEDControl::paused = false;
 
 void LEDMode::activate(void) {
   ::LEDControl.activate(this);
@@ -123,7 +124,7 @@ Key LEDControl::eventHandler(Key mappedKey, byte row, byte col, uint8_t keyState
 }
 
 void LEDControl::loopHook(bool postClear) {
-  if (postClear)
+  if (postClear || paused)
     return;
 
   if (millis() > syncTimer) {
diff --git a/src/Kaleidoscope-LEDControl.h b/src/Kaleidoscope-LEDControl.h
index caae5406..7addcb3a 100644
--- a/src/Kaleidoscope-LEDControl.h
+++ b/src/Kaleidoscope-LEDControl.h
@@ -103,6 +103,9 @@ class LEDControl : public KaleidoscopePlugin {
   static uint8_t get_mode_index();
   static LEDMode *get_mode();
   static void refreshAll() {
+    if (paused)
+      return;
+
     set_all_leds_to({0, 0, 0});
     if (modes[mode])
       modes[mode]->onActivate();
@@ -121,6 +124,7 @@ class LEDControl : public KaleidoscopePlugin {
   static void activate(LEDMode *mode);
 
   static uint16_t syncDelay;
+  static bool paused;
 
   static bool focusHook(const char *command);