Macros: Implement a compact sequence step

This introduces two new macro action steps: `MACRO_ACTION_STEP_TAP_SEQUENCE`,
and `MACRO_ACTION_STEP_TAP_CODE_SEQUENCE`. Both of these will tap everything
that follows up to a terminating zero (or in case of the first, double zeroes).

The purpose of these new steps is to allow one to store longer sequences of
tapped input in a more compact manner, without having to prefix each step with
an action.

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

doc/plugin/Macros.md

@@ -171,6 +171,21 @@ 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).
 
+### Key sequences
+
+One often used case for macros is to type longer sequences of text. In these
+cases, assembling the macro step by step using the events described above is
+verbose both in source code, and compiled. For this reason, the plugin provides
+two other actions, both of which take a sequence of keys, and will tap all of
+them in order.
+
+* `SEQ(K(key1), K(key2), ...)`: Simulates all the given keys being tapped in
+  order, with the currently active interval waited between them. The keys need
+  to be specified by their full name.
+* `SEQc(Kc(key1), Kc(key2), ...)`: Same as `SEQ()`, but the keys are prefixed
+  with `Key_`, and they ignore the `flags` component of a key, and as such, are
+  limited to ordinary keys.
+
 ### Controlling when to send reports
 
 While the plugin will - by default - send a report after every step, that is not

src/kaleidoscope/plugin/Macros.cpp

@@ -1,5 +1,5 @@
 /* Kaleidoscope-Macros - Macro keys for Kaleidoscope.
- * Copyright (C) 2017-2018  Keyboard.io, Inc.
+ * Copyright (C) 2017-2019  Keyboard.io, Inc.
  *
  * This program is free software: you can redistribute it and/or modify it under
  * the terms of the GNU General Public License as published by the Free Software
@@ -39,11 +39,7 @@ void playMacroKeyswitchEvent(Key key, uint8_t keyswitch_state, bool explicit_rep
   kaleidoscope::hid::sendMouseReport();
 }
 
-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++);
-
+static void playKeyCode(Key key, uint8_t keyStates, bool explicit_report) {
   if (keyIsPressed(keyStates)) {
     playMacroKeyswitchEvent(key, IS_PRESSED, explicit_report);
   }
@@ -52,6 +48,14 @@ static void readKeyCodeAndPlay(const macro_t *macro_p, uint8_t flags, uint8_t ke
   }
 }
 
+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++);
+
+  playKeyCode(key, keyStates, explicit_report);
+}
+
 void Macros_::play(const macro_t *macro_p) {
   macro_t macro = MACRO_ACTION_END;
   uint8_t interval = 0;
@@ -104,6 +108,26 @@ void Macros_::play(const macro_t *macro_p) {
       readKeyCodeAndPlay(macro_p++, 0, IS_PRESSED | WAS_PRESSED, false);
       break;
 
+    case MACRO_ACTION_STEP_TAP_SEQUENCE: {
+      uint8_t keyCode;
+      do {
+        flags = pgm_read_byte(macro_p++);
+        keyCode = pgm_read_byte(macro_p++);
+        playKeyCode(Key(keyCode, flags), IS_PRESSED | WAS_PRESSED, false);
+        delay(interval);
+      } while (!(flags == 0 && keyCode == 0));
+      break;
+    }
+    case MACRO_ACTION_STEP_TAP_CODE_SEQUENCE: {
+      uint8_t keyCode;
+      do {
+        keyCode = pgm_read_byte(macro_p++);
+        playKeyCode(Key(keyCode, 0), IS_PRESSED | WAS_PRESSED, false);
+        delay(interval);
+      } while (keyCode != 0);
+      break;
+    }
+
     case MACRO_ACTION_END:
     default:
       return;

src/kaleidoscope/plugin/Macros/MacroSteps.h

@@ -1,5 +1,5 @@
 /* Kaleidoscope-Macros - Macro keys for Kaleidoscope.
- * Copyright (C) 2017-2018  Keyboard.io, Inc.
+ * Copyright (C) 2017-2019  Keyboard.io, Inc.
  *
  * This program is free software: you can redistribute it and/or modify it under
  * the terms of the GNU General Public License as published by the Free Software
@@ -33,6 +33,9 @@ typedef enum {
   MACRO_ACTION_STEP_EXPLICIT_REPORT,
   MACRO_ACTION_STEP_IMPLICIT_REPORT,
   MACRO_ACTION_STEP_SEND_REPORT,
+
+  MACRO_ACTION_STEP_TAP_SEQUENCE,
+  MACRO_ACTION_STEP_TAP_CODE_SEQUENCE,
 } MacroActionStepType;
 
 typedef uint8_t macro_t;
@@ -44,16 +47,23 @@ typedef uint8_t macro_t;
 #define I(n)  MACRO_ACTION_STEP_INTERVAL, n
 #define W(n)  MACRO_ACTION_STEP_WAIT, n
 
-#define Dr(k) MACRO_ACTION_STEP_KEYDOWN, (k).flags, (k).keyCode
+#define Kr(k) (k).flags, (k).keyCode
+#define Kc(k) (Key_ ## k).keyCode
+#define K(k) Kr(Key_ ## k)
+
+#define Dr(k) MACRO_ACTION_STEP_KEYDOWN, Kr(k)
 #define D(k)  Dr(Key_ ## k)
-#define Ur(k) MACRO_ACTION_STEP_KEYUP, (k).flags, (k).keyCode
+#define Ur(k) MACRO_ACTION_STEP_KEYUP, Kr(k)
 #define U(k)  Ur(Key_ ## k)
-#define Tr(k) MACRO_ACTION_STEP_TAP, (k).flags, (k).keyCode
+#define Tr(k) MACRO_ACTION_STEP_TAP, Kr(k)
 #define T(k)  Tr(Key_ ## k)
 
-#define Dc(k) MACRO_ACTION_STEP_KEYCODEDOWN, (Key_ ## k).keyCode
-#define Uc(k) MACRO_ACTION_STEP_KEYCODEUP, (Key_ ## k).keyCode
-#define Tc(k) MACRO_ACTION_STEP_TAPCODE, (Key_ ## k).keyCode
+#define Dc(k) MACRO_ACTION_STEP_KEYCODEDOWN, Kc(k)
+#define Uc(k) MACRO_ACTION_STEP_KEYCODEUP, Kc(k)
+#define Tc(k) MACRO_ACTION_STEP_TAPCODE, Kc(k)
+
+#define SEQ(...) MACRO_ACTION_STEP_TAP_SEQUENCE, __VA_ARGS__, MACRO_ACTION_END, MACRO_ACTION_END
+#define SEQc(...) MACRO_ACTION_STEP_TAP_CODE_SEQUENCE, __VA_ARGS__, MACRO_ACTION_END
 
 #define WITH_EXPLICIT_REPORT MACRO_ACTION_STEP_EXPLICIT_REPORT
 #define WITH_IMPLICIT_REPORT MACRO_ACTION_STEP_IMPLICIT_REPORT