[Keymap] add 40percentclub/mf68:andyjack (#10208)

* Initial checkin of my 40percentclub/mf68 keymap

* Add gplv2 license header

keyboards/40percentclub/mf68/keymaps/andyjack/keymap.c

@@ -0,0 +1,144 @@
+/*
+Copyright 2020 Andy Jack
+
+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 Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+#include QMK_KEYBOARD_H
+
+enum layers {
+    _QWERTY,
+    _L1,
+    _L2
+};
+
+#define CTL_ESC LCTL_T(KC_ESC)
+
+/* these key combos are mapped to shell commands in my .keylaunchrc */
+#define MUT_IN LALT(KC_F10)
+#define MUT_OUT LALT(KC_F11)
+#define MUT_MIC LALT(KC_F12)
+#define SCN_LCK LCTL(KC_SLCK)
+
+extern keymap_config_t keymap_config;
+
+enum custom_keycodes {
+    AJ_FN = SAFE_RANGE,
+    AJ_RCTL,
+    AJ_MSWP,
+    AJ_MLCK,
+};
+
+// clang-format off
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+  [_QWERTY] = LAYOUT_68_ansi(
+    KC_GRV,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_MINS, KC_EQL,  KC_BSPC,          KC_INS,  KC_PGUP,
+    KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_LBRC, KC_RBRC, KC_BSLS,          KC_DEL,  KC_PGDN,
+    CTL_ESC, KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT,          KC_ENT,
+    KC_LSFT, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH,                   KC_RSFT,          KC_UP,
+    KC_LCTL, KC_LGUI, KC_LALT,                            KC_SPC,                             KC_RALT, AJ_FN,   AJ_RCTL,          KC_LEFT, KC_DOWN, KC_RGHT
+  ),
+  [_L1] = LAYOUT_68_ansi(
+    KC_ESC,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  KC_BSPC,          KC_VOLU, KC_HOME,
+    _______, _______, KC_HOME, KC_UP,   KC_END,  _______, _______, MUT_IN , MUT_OUT, MUT_MIC, _______, _______, BL_STEP, _______,          KC_VOLD, KC_END,
+    _______, _______, KC_LEFT, KC_DOWN, KC_RGHT, _______, _______, _______, _______, SCN_LCK, _______, _______,          _______,
+    _______, _______, _______, _______, KC_BTN3, _______, _______, KC_MUTE, _______, _______, _______,                   _______,          KC_MUTE,
+    _______, AJ_MLCK, AJ_MSWP,                            _______,                            _______, _______, _______,          KC_MPRV, KC_MPLY, KC_MNXT
+  ),
+  [_L2] = LAYOUT_68_ansi(
+    KC_GRV,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  KC_BSPC,          KC_VOLU, KC_HOME,
+    _______, _______, _______, KC_UP,   _______, _______, _______, KC_7,    KC_8,    KC_9,    _______, _______, _______, _______,          KC_VOLD, KC_END,
+    _______, _______, KC_LEFT, KC_DOWN, KC_RGHT, _______, _______, KC_4,    KC_5,    KC_6,    _______, _______,          _______,
+    _______, _______, _______, _______, _______, _______, KC_0,    KC_1,    KC_2,    KC_3,    _______,                   _______,          KC_MUTE,
+    _______, _______, _______,                            _______,                            _______, _______, _______,          KC_MPRV, KC_MPLY, KC_MNXT
+  )
+};
+// clang-format on
+
+static bool    aj_fn_down   = false;
+static bool    aj_rctl_down = false;
+static uint8_t keycode_for_aj_rctl;
+
+/* My version of:
+  https://www.reddit.com/r/olkb/comments/8eticz/how_to_activate_a_layer_with_a_combination/dxygw0f/
+* AJ_FN by itself turns on layer 1
+* AJ_RCTL by itself acts as a control key
+* pressing FN and RCTL together, in any order, turns on layer 2
+*/
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+    switch (keycode) {
+        case AJ_FN:
+            if (record->event.pressed) {
+                if (aj_rctl_down) {
+                    layer_on(_L2);
+                } else {
+                    layer_on(_L1);
+                }
+                aj_fn_down = true;
+            } else {
+                layer_off(_L1);
+                layer_off(_L2);
+                aj_fn_down = false;
+            }
+            return false;
+            break;
+        case AJ_RCTL:
+            if (record->event.pressed) {
+                if (aj_fn_down) {
+                    layer_on(_L2);
+                } else {
+                    register_code(keycode_for_aj_rctl);
+                }
+                aj_rctl_down = true;
+            } else {
+                layer_off(_L2);
+                unregister_code(keycode_for_aj_rctl);
+                aj_rctl_down = false;
+            }
+            return false;
+            break;
+        case AJ_MSWP:
+        case AJ_MLCK:
+            if (record->event.pressed) {
+                if (!eeconfig_is_enabled()) {
+                    eeconfig_init();
+                }
+                keymap_config.raw = eeconfig_read_keymap();
+                switch (keycode) {
+                    case AJ_MSWP:
+                        keymap_config.swap_lalt_lgui = !keymap_config.swap_lalt_lgui;
+                        keymap_config.swap_ralt_rgui = keymap_config.swap_lalt_lgui;
+                        keycode_for_aj_rctl          = keymap_config.swap_lalt_lgui ? KC_RALT : KC_RCTL;
+                        break;
+                    case AJ_MLCK:
+                        keymap_config.no_gui = !keymap_config.no_gui;
+                        break;
+                }
+                eeconfig_update_keymap(keymap_config.raw);
+                clear_keyboard();  // clear to prevent stuck keys
+            }
+            return false;
+            break;
+    }
+    return true;
+}
+
+void keyboard_post_init_user(void) {
+    if (!eeconfig_is_enabled()) {
+        eeconfig_init();
+    }
+    keymap_config.raw   = eeconfig_read_keymap();
+    keycode_for_aj_rctl = keymap_config.swap_lalt_lgui ? KC_RALT : KC_RCTL;
+    eeconfig_update_keymap(keymap_config.raw);
+    clear_keyboard();  // clear to prevent stuck keys
+}

keyboards/40percentclub/mf68/keymaps/andyjack/readme.md

@@ -0,0 +1,22 @@
+## Customizations from the `default` keymap
+
+* caps lock is left ctrl / press & release for escape
+* keyboard LED brightness control - Fn + ] (same as default)
+* bootmagic:
+  * ability to swap keys - for moving between mac and win/linux
+  * for win/linux - keys are as labeled in layer 0; AJ_RCTL is right ctl
+  * for mac:
+    * LALT and LGUI swapped
+    * RALT key sends RGUI code
+    * AJ_RCTL key sends RALT code
+  * layer 2 access via Fn + AJ_RCTL pressed in any order
+    * regardless of swapped state
+  * ability to disable left gui
+* Fn + v sends a middle mouse click - nice for pasting the mouse selection in
+  linux - I always mess up and scroll while clicking
+  * note: the mouse cursor has to be placed at the insert point
+* mapping some Fn + key combinations to program launch shortcuts
+
+<!--
+ vim:tw=78
+-->

keyboards/40percentclub/mf68/keymaps/andyjack/rules.mk

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+MOUSEKEY_ENABLE = yes
+BOOTMAGIC_ENABLE = full