[Keymap] Added my customized 40% layout (#7555)

* Formatting of Contra readme.

* Initial version of my custom keymap

* Move TODOs to readme

* Add comment

* Nuke Plover layer

* Port changes to other layers

* Finished work on my own layout for now

* Add layout image

* Processed comments from review

3 files changed, 251 insertions, 0 deletions

diff --git a/keyboards/contra/keymaps/alper/config.h b/keyboards/contra/keymaps/alper/config.h
new file mode 100644
index 000000000..d61ee2938
--- /dev/null
+++ b/keyboards/contra/keymaps/alper/config.h
@@ -0,0 +1,38 @@
+#pragma once
+
+
+#ifdef AUDIO_ENABLE
+    #define STARTUP_SONG SONG(PLANCK_SOUND)
+    // #define STARTUP_SONG SONG(NO_SOUND)
+
+    #define DEFAULT_LAYER_SONGS { SONG(QWERTY_SOUND), \
+                                  SONG(COLEMAK_SOUND), \
+                                  SONG(DVORAK_SOUND) \
+                                }
+#endif
+
+#define MUSIC_MASK (keycode != KC_NO)
+
+/*
+ * MIDI options
+ */
+
+/* Prevent use of disabled MIDI features in the keymap */
+//#define MIDI_ENABLE_STRICT 1
+
+/* enable basic MIDI features:
+   - MIDI notes can be sent when in Music mode is on
+*/
+
+#define MIDI_BASIC
+
+/* enable advanced MIDI features:
+   - MIDI notes can be added to the keymap
+   - Octave shift and transpose
+   - Virtual sustain, portamento, and modulation wheel
+   - etc.
+*/
+//#define MIDI_ADVANCED
+
+/* override number of MIDI tone keycodes (each octave adds 12 keycodes and allocates 12 bytes) */
+//#define MIDI_TONE_KEYCODE_OCTAVES 2
diff --git a/keyboards/contra/keymaps/alper/keymap.c b/keyboards/contra/keymaps/alper/keymap.c
new file mode 100644
index 000000000..8be751355
--- /dev/null
+++ b/keyboards/contra/keymaps/alper/keymap.c
@@ -0,0 +1,191 @@
+/* Copyright 2015-2017 Jack Humbert
+ *
+ * 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 planck_layers {
+  _QWERTY,
+  _COLEMAK,
+  _DVORAK,
+  _LOWER,
+  _RAISE,
+  _ADJUST
+};
+
+enum planck_keycodes {
+  QWERTY = SAFE_RANGE,
+  COLEMAK,
+  DVORAK,
+  LOWER,
+  RAISE
+};
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+  /* Qwerty
+   * ,---------------------------------------------------------------------------------------------------.
+   * | Esc       |   Q  |   W  |   E  |   R  |   T  |   Y  |   U  |   I      |   O  |   P  |    Bksp     |
+   * |-----------+------+------+------+------+-------------+------+----------+------+------+-------------|
+   * | Ctrl/Tab  |   A  |   S  |   D  |   F  |   G  |   H  |   J  |   K      |   L  |   ;  |     "       |
+   * |-----------+------+------+------+------+------|------+------+----------+------+------+-------------|
+   * | Shift/Esc |   Z  |   X  |   C  |   V  |   B  |   N  |   M  |   ,      |   .  |   /  | Shift/Enter |
+   * |-----------+------+------+------+------+------+------+------+----------+------+------+-------------|
+   * | Tab       | Ctrl | Alt  | GUI  |Lower |    Space    |Raise | GUI/Left | Down |  Up  |    Right    |
+   * `---------------------------------------------------------------------------------------------------'
+   */
+  [_QWERTY] = LAYOUT_planck_mit(
+    KC_ESC,               KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,                  KC_O,    KC_P,    KC_BSPC,
+    MT(MOD_LCTL, KC_TAB), KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,                  KC_L,    KC_SCLN, KC_QUOT,
+    MT(MOD_LSFT, KC_ESC), KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM,               KC_DOT,  KC_SLSH, MT(MOD_RSFT, KC_ENT),
+    KC_TAB,               KC_LCTL, KC_LALT, KC_LGUI, LOWER,       KC_SPC,       RAISE,   MT(MOD_RGUI, KC_LEFT), KC_DOWN, KC_UP,   KC_RGHT
+  ),
+
+  /* Colemak
+   * ,---------------------------------------------------------------------------------------------------.
+   * | Esc       |   Q  |   W  |   F  |   P  |   G  |   J  |   L  |     U    |   Y  |   ;  |    Bksp     |
+   * |-----------+------+------+------+------+-------------+------+----------+------+------+-------------|
+   * | Ctrl/Tab  |   A  |   R  |   S  |   T  |   D  |   H  |   N  |     E    |   I  |   O  |     "       |
+   * |-----------+------+------+------+------+------|------+------+----------+------+------+-------------|
+   * | Shift/Esc |   Z  |   X  |   C  |   V  |   B  |   K  |   M  |     ,    |   .  |   /  | Shift/Enter |
+   * |-----------+------+------+------+------+-------------+------+----------+------+------+------+------|
+   * | Tab       | Ctrl | Alt  | GUI  |Lower |    Space    |Raise | GUI/Left | Down |  Up  |    Right    |
+   * `---------------------------------------------------------------------------------------------------'
+   */
+  [_COLEMAK] = LAYOUT_planck_mit(
+    KC_ESC,               KC_Q,    KC_W,    KC_F,    KC_P,    KC_G,    KC_J,    KC_L,    KC_U,                  KC_Y,    KC_SCLN, KC_BSPC,
+    MT(MOD_LCTL, KC_TAB), KC_A,    KC_R,    KC_S,    KC_T,    KC_D,    KC_H,    KC_N,    KC_E,                  KC_I,    KC_O,    KC_QUOT,
+    MT(MOD_LSFT, KC_ESC), KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_K,    KC_M,    KC_COMM,               KC_DOT,  KC_SLSH, MT(MOD_RSFT, KC_ENT),
+    KC_TAB,               KC_LCTL, KC_LALT, KC_LGUI, LOWER,       KC_SPC,       RAISE,   MT(MOD_RGUI, KC_LEFT), KC_DOWN, KC_UP,   KC_RGHT
+  ),
+
+  /* Dvorak
+   * ,---------------------------------------------------------------------------------------------------.
+   * | Esc       |   "  |   ,  |   .  |   P  |   Y  |   F  |   G  |   C      |   R  |   L  | Bksp        |
+   * |-----------+------+------+------+------+-------------+------+----------+------+------+-------------|
+   * | Ctrl/Tab  |   A  |   O  |   E  |   U  |   I  |   D  |   H  |   T      |   N  |   S  | /           |
+   * |-----------+------+------+------+------+------|------+------+----------+------+------+-------------|
+   * | Shift/Esc |   ;  |   Q  |   J  |   K  |   X  |   B  |   M  |   W      |   V  |   Z  | Shift/Enter |
+   * |-----------+------+------+------+------+------+------+------+----------+------+------+-------------|
+   * | Tab       | Ctrl | Alt  | GUI  |Lower |    Space    |Raise | GUI/Left | Down |  Up  | Right       |
+   * `---------------------------------------------------------------------------------------------------'
+   */
+  [_DVORAK] = LAYOUT_planck_mit(
+    KC_ESC,               KC_QUOT, KC_COMM, KC_DOT,  KC_P,  KC_Y,    KC_F,    KC_G,    KC_C,                  KC_R,    KC_L,    KC_BSPC,
+    MT(MOD_LCTL, KC_TAB), KC_A,    KC_O,    KC_E,    KC_U,  KC_I,    KC_D,    KC_H,    KC_T,                  KC_N,    KC_S,    KC_SLSH,
+    MT(MOD_LSFT, KC_ESC), KC_SCLN, KC_Q,    KC_J,    KC_K,  KC_X,    KC_B,    KC_M,    KC_W,                  KC_V,    KC_Z,    MT(MOD_RSFT, KC_ENT),
+    KC_TAB,               KC_LCTL, KC_LALT, KC_LGUI, LOWER,      KC_SPC,      RAISE,   MT(MOD_RGUI, KC_LEFT), KC_DOWN, KC_UP,   KC_RGHT
+  ),
+
+  /* Lower
+   * ,-----------------------------------------------------------------------------------.
+   * |   ~  |   !  |   @  |   #  |   $  |   %  |   ^  |   &  |   *  |   (  |   )  | Bksp |
+   * |------+------+------+------+------+-------------+------+------+------+------+------|
+   * | Del  |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |   _  |   +  |   {  |   }  |  |   |
+   * |------+------+------+------+------+------|------+------+------+------+------+------|
+   * |      |  F7  |  F8  |  F9  |  F10 |  F11 |  F12 |ISO ~ |ISO | | Home | End  |      |
+   * |------+------+------+------+------+------+------+------+------+------+------+------|
+   * |      |      |      |      |      |             |      | Next | Vol- | Vol+ | Play |
+   * `-----------------------------------------------------------------------------------'
+   */
+  [_LOWER] = LAYOUT_planck_mit(
+    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_DEL,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_UNDS,    KC_PLUS,    KC_LCBR, KC_RCBR, KC_PIPE,
+    _______, KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  S(KC_NUHS), S(KC_NUBS), KC_HOME, KC_END,  _______,
+    _______, _______, _______, _______, _______,     _______,      _______,    KC_MFFD,    KC_VOLD, KC_VOLU, KC_MPLY
+  ),
+
+  /* Raise
+   * ,----------------------------------------------------------------------------------------------.
+   * |   `       |   1     |      2  |   3  |   4  |   5  |   6  |   7  |   8  |   9  |   0  | Bksp |
+   * |-----------+---------+---------+------+------+-------------+------+------+------+------+------|
+   * | Del       |  F1     |  F2     |  F3  |  F4  |  F5  |  F6  |   -  |   =  |   [  |   ]  |  \   |
+   * |-----------+---------+---------+------+------+------|------+------+------+------+------+------|
+   * |           |  F7     |  F8     |  F9  |  F10 |  F11 |  F12 |ISO # |ISO / |Pg Up |Pg Dn |      |
+   * |-----------+---------+---------+------+------+------+------+------+------+------+------+------|
+   * | AppSwitch | PrevTab | NextTab |      |      |             |      | Next | Vol- | Vol+ | Play |
+   * `----------------------------------------------------------------------------------------------'
+   */
+  [_RAISE] = LAYOUT_planck_mit(
+    KC_GRV,         KC_1,                     KC_2,                     KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_BSPC,
+    KC_DEL,         KC_F1,                    KC_F2,                    KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_MINS, KC_EQL,  KC_LBRC, KC_RBRC, KC_BSLS,
+    _______,        KC_F7,                    KC_F8,                    KC_F9,   KC_F10,  KC_F11,  KC_F12,  KC_NUHS, KC_NUBS, KC_PGUP, KC_PGDN, _______,
+    LGUI(KC_GRAVE), LGUI(LSFT(KC_LBRACKET)),  LGUI(LSFT(KC_RBRACKET)),  _______, _______, _______,          _______, KC_MFFD, KC_VOLD, KC_VOLU, KC_MPLY
+  ),
+
+  /* Adjust (Lower + Raise)
+   * ,-----------------------------------------------------------------------------------.
+   * |      | Reset|      |      |      |      |      |      |      |      |      |  Del |
+   * |------+------+------+------+------+-------------+------+------+------+------+------|
+   * |      |      |      |Aud on|Audoff|AGnorm|AGswap|Qwerty|Colemk|Dvorak|      |      |
+   * |------+------+------+------+------+------|------+------+------+------+------+------|
+   * |      |Voice-|Voice+|Mus on|Musoff|MIDIon|MIDIof|      |      |      |      |      |
+   * |------+------+------+------+------+------+------+------+------+------+------+------|
+   * |      |      |      |      |      |             |      |      |      |      |      |
+   * `-----------------------------------------------------------------------------------'
+   */
+  [_ADJUST] = LAYOUT_planck_mit(
+    _______, RESET,   DEBUG,   RGB_TOG, RGB_MOD, RGB_HUI, RGB_HUD, RGB_SAI, RGB_SAD,  RGB_VAI, RGB_VAD, KC_DEL ,
+    _______, _______, MU_MOD,  AU_ON,   AU_OFF,  AG_NORM, AG_SWAP, QWERTY,  COLEMAK,  DVORAK,  _______,  _______,
+    _______, MUV_DE,  MUV_IN,  MU_ON,   MU_OFF,  MI_ON,   MI_OFF,  TERM_ON, TERM_OFF, _______, _______, _______,
+    _______, _______, _______, _______, _______,     _______,      _______, _______,  _______, _______, _______
+  )
+
+};
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+  switch (keycode) {
+    case QWERTY:
+      if (record->event.pressed) {
+        print("mode just switched to qwerty and this is a huge string\n");
+        set_single_persistent_default_layer(_QWERTY);
+      }
+      return false;
+      break;
+    case COLEMAK:
+      if (record->event.pressed) {
+        set_single_persistent_default_layer(_COLEMAK);
+      }
+      return false;
+      break;
+    case DVORAK:
+      if (record->event.pressed) {
+        set_single_persistent_default_layer(_DVORAK);
+      }
+      return false;
+      break;
+    case LOWER:
+      if (record->event.pressed) {
+        layer_on(_LOWER);
+        update_tri_layer(_LOWER, _RAISE, _ADJUST);
+      } else {
+        layer_off(_LOWER);
+        update_tri_layer(_LOWER, _RAISE, _ADJUST);
+      }
+      return false;
+      break;
+    case RAISE:
+      if (record->event.pressed) {
+        layer_on(_RAISE);
+        update_tri_layer(_LOWER, _RAISE, _ADJUST);
+      } else {
+        layer_off(_RAISE);
+        update_tri_layer(_LOWER, _RAISE, _ADJUST);
+      }
+      return false;
+      break;
+  }
+  return true;
+}
diff --git a/keyboards/contra/keymaps/alper/readme.md b/keyboards/contra/keymaps/alper/readme.md
new file mode 100644
index 000000000..0b9cab507
--- /dev/null
+++ b/keyboards/contra/keymaps/alper/readme.md
@@ -0,0 +1,22 @@
+# Alper's Contra Layout
+
+![Dvorak Layout](https://i.imgur.com/BvBYgpz.png)
+
+## Rationale
+
+I based this off the default and changed some stuff because I'm a macOS user who types in Dvorak:
+
+* Ctrl/Tab: It is normal to remap Caps Lock to control there and having a press button there for Tab would solve a lot of problems. BUT on my Contra this button is broken, so I've mapped 0,0 to Tab as well.
+* Shift/Esc: A standard left shift with an Escape that I have not been utilizing much in favor of the top corner button.
+* Tab: The replacement tab.
+* Overloaded the Left arrow with another GUI (Command) button because that is essential on macOS.
+* Overloaded the Enter button with a Shift because like Command, it is essential for me to have these on both sides of the keyboard.
+* Raise-0,0: Switches between windows of an application.
+* Raise-0,1-2: Dedicated next and previous tab buttons since these key combinations caused a finger twister.
+
+
+## TODO
+
+* Try out tapdance for brackets (see ryanm101/keymap.c)
+* REMAP ESC To LT() so I can use it to select numbers (_NUMB) and functions more easily? (see msiu/keymap.c) https://docs.qmk.fm/#/feature_advanced_keycodes?id=switching-and-toggling-layers
+* Wipe everything except Dvorak and Qwerty (see deastiny/keymap.c)
\ No newline at end of file