Macros: Add a way to have more control over when reports are sent

Sometimes we'd like to be in control of when reports are sent during macro
playback. This implements a way to achieve that.

Fixes #368.

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

NEWS.md

@@ -75,6 +75,10 @@ In certain cases we need to delay the unicode input sequence, otherwise the host
 
 The [Cycle](doc/plugin/Cycle.md) plugin has much better support for cycling through keys with modifiers applied to them, such as `LSHIFT(Key_A)`. Please see the documentation and the updated example for more information.
 
+### More control over when to send reports during Macro playback
+
+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.
+
 ## New hardware support
 
 Kaleidoscope has been ported to the following devices:

doc/plugin/Macros.md

@@ -142,7 +142,7 @@ need to define them in a special way, using the `MACRO` helper (or its
 
 ## `MACRO` steps
 
-Macro steps can be divided into two groups:
+Macro steps can be divided into the following groups:
 
 ### Delays
 
@@ -171,6 +171,23 @@ not supported by this compact representation.
 * `U(key)`, `Ur(key)`, `Uc(key)`: Simulates a key being released (going up).
 * `T(key)`, `Tr(key)`, `Tc(key)`: Simulates a key being tapped (pressed first, then released).
 
+### Controlling when to send reports
+
+While the plugin will - by default - send a report after every step, that is not
+always desirable. For this reason, we allow turning this implicit reporting off,
+and switching to explicit reporting instead. Note that the tap steps (`T()`,
+`Tr()`, and `Tc()`) will always send an implicit report, and so will
+`Macros.type()`.
+
+To control when to send reports, the following steps can be used:
+
+* `WITH_EXPLICIT_REPORT`: Prevents the plugin from sending an implicit report
+  after every step. To send a report, one needs to have a `SEND_REPORT` step
+  too.
+* `WITH_IMPLICIT_REPORT`: Enables sending an implicit report after every step
+  (the default).
+* `SEND_REPORT`: Send a report.
+
 ## Overrideable methods
 
 ### `macroAction(macroIndex, keyState)`

src/kaleidoscope/plugin/Macros.cpp

@@ -29,23 +29,26 @@ MacroKeyEvent Macros_::active_macros[];
 byte Macros_::active_macro_count;
 byte Macros_::row, Macros_::col;
 
-void playMacroKeyswitchEvent(Key key, uint8_t keyswitch_state) {
+void playMacroKeyswitchEvent(Key key, uint8_t keyswitch_state, bool explicit_report) {
   handleKeyswitchEvent(key, UNKNOWN_KEYSWITCH_LOCATION, keyswitch_state | INJECTED);
 
+  if (explicit_report)
+    return;
+
   kaleidoscope::hid::sendKeyboardReport();
   kaleidoscope::hid::sendMouseReport();
 }
 
-static void readKeyCodeAndPlay(const macro_t *macro_p, uint8_t flags, uint8_t keyStates) {
+static void readKeyCodeAndPlay(const macro_t *macro_p, uint8_t flags, uint8_t keyStates, bool explicit_report) {
   Key key;
   key.flags = flags;
   key.keyCode = pgm_read_byte(macro_p++);
 
   if (keyIsPressed(keyStates)) {
-    playMacroKeyswitchEvent(key, IS_PRESSED);
+    playMacroKeyswitchEvent(key, IS_PRESSED, explicit_report);
   }
   if (keyWasPressed(keyStates)) {
-    playMacroKeyswitchEvent(key, WAS_PRESSED);
+    playMacroKeyswitchEvent(key, WAS_PRESSED, explicit_report);
   }
 }
 
@@ -53,12 +56,23 @@ void Macros_::play(const macro_t *macro_p) {
   macro_t macro = MACRO_ACTION_END;
   uint8_t interval = 0;
   uint8_t flags;
+  bool explicit_report = false;
 
   if (!macro_p)
     return;
 
   while (true) {
     switch (macro = pgm_read_byte(macro_p++)) {
+    case MACRO_ACTION_STEP_EXPLICIT_REPORT:
+      explicit_report = true;
+      break;
+    case MACRO_ACTION_STEP_IMPLICIT_REPORT:
+      explicit_report = false;
+      break;
+    case MACRO_ACTION_STEP_SEND_REPORT:
+      kaleidoscope::hid::sendKeyboardReport();
+      kaleidoscope::hid::sendMouseReport();
+      break;
     case MACRO_ACTION_STEP_INTERVAL:
       interval = pgm_read_byte(macro_p++);
       break;
@@ -69,25 +83,25 @@ void Macros_::play(const macro_t *macro_p) {
     }
     case MACRO_ACTION_STEP_KEYDOWN:
       flags = pgm_read_byte(macro_p++);
-      readKeyCodeAndPlay(macro_p++, flags, IS_PRESSED);
+      readKeyCodeAndPlay(macro_p++, flags, IS_PRESSED, explicit_report);
       break;
     case MACRO_ACTION_STEP_KEYUP:
       flags = pgm_read_byte(macro_p++);
-      readKeyCodeAndPlay(macro_p++, flags, WAS_PRESSED);
+      readKeyCodeAndPlay(macro_p++, flags, WAS_PRESSED, explicit_report);
       break;
     case MACRO_ACTION_STEP_TAP:
       flags = pgm_read_byte(macro_p++);
-      readKeyCodeAndPlay(macro_p++, flags, IS_PRESSED | WAS_PRESSED);
+      readKeyCodeAndPlay(macro_p++, flags, IS_PRESSED | WAS_PRESSED, false);
       break;
 
     case MACRO_ACTION_STEP_KEYCODEDOWN:
-      readKeyCodeAndPlay(macro_p++, 0, IS_PRESSED);
+      readKeyCodeAndPlay(macro_p++, 0, IS_PRESSED, explicit_report);
       break;
     case MACRO_ACTION_STEP_KEYCODEUP:
-      readKeyCodeAndPlay(macro_p++, 0, WAS_PRESSED);
+      readKeyCodeAndPlay(macro_p++, 0, WAS_PRESSED, explicit_report);
       break;
     case MACRO_ACTION_STEP_TAPCODE:
-      readKeyCodeAndPlay(macro_p++, 0, IS_PRESSED | WAS_PRESSED);
+      readKeyCodeAndPlay(macro_p++, 0, IS_PRESSED | WAS_PRESSED, false);
       break;
 
     case MACRO_ACTION_END:
@@ -197,8 +211,8 @@ const macro_t *Macros_::type(const char *string) {
     if (key.raw == Key_NoKey.raw)
       continue;
 
-    playMacroKeyswitchEvent(key, IS_PRESSED);
+    playMacroKeyswitchEvent(key, IS_PRESSED, false);
-    playMacroKeyswitchEvent(key, WAS_PRESSED);
+    playMacroKeyswitchEvent(key, WAS_PRESSED, false);
 
   }
 

src/kaleidoscope/plugin/Macros/MacroSteps.h

@@ -29,6 +29,10 @@ typedef enum {
   MACRO_ACTION_STEP_KEYCODEDOWN,
   MACRO_ACTION_STEP_KEYCODEUP,
   MACRO_ACTION_STEP_TAPCODE,
+
+  MACRO_ACTION_STEP_EXPLICIT_REPORT,
+  MACRO_ACTION_STEP_IMPLICIT_REPORT,
+  MACRO_ACTION_STEP_SEND_REPORT,
 } MacroActionStepType;
 
 typedef uint8_t macro_t;
@@ -51,4 +55,8 @@ typedef uint8_t macro_t;
 #define Uc(k) MACRO_ACTION_STEP_KEYCODEUP, (Key_ ## k).keyCode
 #define Tc(k) MACRO_ACTION_STEP_TAPCODE, (Key_ ## k).keyCode
 
+#define WITH_EXPLICIT_REPORT MACRO_ACTION_STEP_EXPLICIT_REPORT
+#define WITH_IMPLICIT_REPORT MACRO_ACTION_STEP_IMPLICIT_REPORT
+#define SEND_REPORT MACRO_ACTION_STEP_SEND_REPORT
+
 __attribute__((deprecated("END is no longer required to end macros"))) const MacroActionStepType END = MACRO_ACTION_END;