Added a keymap optimized for xmonad

The M(1) function changes layer temporarily (so that numbers can be used)
and holds LGUI which makes it possible to easily change virtual screens
and swap windows inbetween them.

keyboard/planck/keymaps/lukas.c

@@ -0,0 +1,64 @@
+#include "planck.h"
+#ifdef BACKLIGHT_ENABLE
+  #include "backlight.h"
+#endif
+
+// This simple keymap is optimized for xmonad users using super as their modifier key.
+// M(1) makes it possible to change virtual screens and swap windows between them.
+
+// Each layer gets a name for readability, which is then used in the keymap matrix below.
+#define _QW 0
+#define _LW 1
+#define _RS 2
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+  [_QW] = { /* Qwerty */
+    {KC_TAB,  KC_Q,    KC_W,    KC_E, KC_R,    KC_T,   KC_Y,   KC_U,    KC_I,    KC_O,    KC_P,    KC_BSPC},
+    {KC_ESC,  KC_A,    KC_S,    KC_D, KC_F,    KC_G,   KC_H,   KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT},
+    {KC_LSFT, KC_Z,    KC_X,    KC_C, KC_V,    KC_B,   KC_N,   KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_ENT },
+    {KC_LCTL, KC_LALT, KC_LGUI, M(1), MO(_LW), KC_SPC, KC_SPC, MO(_RS), KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT}
+  },
+  [_RS] = { /* RAISE */
+    {KC_GRV,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_DEL },
+    {KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_MINS, KC_EQL,  KC_LBRC, KC_RBRC, KC_BSLS},
+    {KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS},
+    {KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS}
+  },
+  [_LW] = { /* LOWER */
+    {KC_TILD, KC_EXLM, KC_AT,   KC_HASH, KC_DLR,  KC_PERC, KC_CIRC, KC_AMPR, KC_ASTR, KC_LPRN, KC_RPRN, KC_BSPC},
+    {KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_UNDS, KC_PLUS, KC_LCBR, KC_RCBR, KC_PIPE},
+    {KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_LBRC, KC_RBRC, KC_TRNS},
+    {KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS}
+  }
+};
+
+const uint16_t PROGMEM fn_actions[] = {
+
+};
+
+const macro_t *action_get_macro(keyrecord_t *record, uint8_t id, uint8_t opt)
+{
+  // MACRODOWN only works in this function
+  switch(id) {
+    case 0:
+      if (record->event.pressed) {
+        register_code(KC_RSFT);
+        #ifdef BACKLIGHT_ENABLE
+          backlight_step();
+        #endif
+      } else {
+        unregister_code(KC_RSFT);
+      }
+      break;
+    case 1:
+      if (record->event.pressed) {
+        register_code(KC_LGUI);
+        layer_on(_RS);
+      } else {
+        unregister_code(KC_LGUI);
+        layer_off(_RS);
+      }
+      break;
+  }
+  return MACRO_NONE;
+};