ActiveModColor: Add a way to disable highlighting normal modifiers

Fixes #535.

Signed-off-by: Gergely Nagy <algernon@keyboard.io>

NEWS.md

@@ -79,6 +79,10 @@ The [Cycle](doc/plugin/Cycle.md) plugin has much better support for cycling thro
 
 There are situations where one would like to disable sending a report after each and every step of a macro, and rather have direct control over when reports are sent. The new `WITH_EXPLICIT_REPORT`, `WITH_IMPLICIT_REPORT` and `SEND_REPORT` steps help with that. Please see the [Macros](doc/plugin/Macros.md) documentation for more information.
 
+### LED-ActiveModColor can be asked to not highlight normal modifiers
+
+The plugin was intended to work with OneShot primarily, and that's where it is most useful. To make it less surprising, and more suitable to include it in default-like firmware, we made it possible to ask it not to highlight normal modifiers. Please see the [LED-ActiveModColor](doc/plugin/LED-ActiveModColor.md) documentation for more information.
+
 ### Events now trigger on layer changes
 
 Changing layers now triggers the `onLayerChange` event - but only if there was real change (thus, calling `Layer.on(SOME_LAYER)` multiple times in a row will only trigger one event). This event was introduced to help plugins that depend on layer state schedule their work better.

doc/plugin/LED-ActiveModColor.md

@@ -43,6 +43,14 @@ properties:
 
 > The color to use for highlighting one-shot modifiers when they are sticky. Defaults to a red color.
 
+## Plugin methods
+
+The `ActiveModColorEffect` object provides the following methods:
+
+### `.highlightNormalModifiers(bool)`
+
+> Can be used to enable or disable the highlighting of normal modifiers. Defaults to true.
+
 ## Dependencies
 
 * [Kaleidoscope-LEDControl](LEDControl.md)

src/kaleidoscope/plugin/LED-ActiveModColor.cpp

@@ -24,6 +24,7 @@ namespace plugin {
 
 uint8_t ActiveModColorEffect::mod_keys_[MAX_MODS_PER_LAYER];
 uint8_t ActiveModColorEffect::mod_key_count_;
+bool ActiveModColorEffect::highlight_normal_modifiers_ = true;
 
 cRGB ActiveModColorEffect::highlight_color = (cRGB) {
   0xff, 0xff, 0xff
@@ -42,8 +43,9 @@ EventHandlerResult ActiveModColorEffect::onLayerChange() {
       Key k = Layer.lookupOnActiveLayer(r, c);
 
       if (::OneShot.isOneShotKey(k) ||
+          (highlight_normal_modifiers_ && (
              (k.raw >= Key_LeftControl.raw && k.raw <= Key_RightGui.raw) ||
-          (k.flags == (SYNTHETIC | SWITCH_TO_KEYMAP))) {
+             (k.flags == (SYNTHETIC | SWITCH_TO_KEYMAP))))) {
         uint8_t coords = r * COLS + c;
         mod_keys_[mod_key_count_++] = coords;
       }

src/kaleidoscope/plugin/LED-ActiveModColor.h

@@ -31,10 +31,15 @@ class ActiveModColorEffect : public kaleidoscope::Plugin {
   static cRGB highlight_color;
   static cRGB sticky_color;
 
+  static void highlightNormalModifiers(bool value) {
+    highlight_normal_modifiers_ = value;
+  }
+
   EventHandlerResult beforeReportingState();
   EventHandlerResult onLayerChange();
 
  private:
+  static bool highlight_normal_modifiers_;
   static uint8_t mod_keys_[MAX_MODS_PER_LAYER];
   static uint8_t mod_key_count_;
 };