[Keymap] userspace and keymap for rupa (#9786)

* first iteration of my keymap

* * move to userspace
* "script" modes
* keymap bling

* OM and RUPA keys

and tryin to micro-optimize in process_records.c

* woops

swap shifted rupas
forgot to add codepoint for OM

* Apply suggestions from code review

Co-authored-by: Drashna Jaelre <drashna@live.com>

* add call to process_record_keymap, per review

* fall through to process_record_keymap

* license headers

Co-authored-by: Drashna Jaelre <drashna@live.com>

8 files changed, 292 insertions, 0 deletions

diff --git a/users/rupa/config.h b/users/rupa/config.h
new file mode 100644
index 0000000000..9024052042
--- /dev/null
+++ b/users/rupa/config.h
@@ -0,0 +1,8 @@
+#pragma once
+
+#define UNICODE_SELECTED_MODES UC_MAC, UC_LNX
+
+#define ONESHOT_TAP_TOGGLE 5
+#define ONESHOT_TIMEOUT 5000
+
+#define TAP_CODE_DELAY 5 //DEFAULT: 100
diff --git a/users/rupa/process_records.c b/users/rupa/process_records.c
new file mode 100755
index 0000000000..2d72310100
--- /dev/null
+++ b/users/rupa/process_records.c
@@ -0,0 +1,72 @@
+/*
+Copyright 2020 rupa <rupa@lrrr.us> @rupa
+
+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 "rupa.h"
+
+font_t *translator = NULL;
+
+__attribute__((weak))
+bool process_record_keymap(uint16_t keycode, keyrecord_t *record) {
+    return true;
+}
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+    bool is_shifted = get_mods()&MOD_MASK_SHIFT;
+    bool is_pressed = record->event.pressed;
+
+    switch(keycode) {
+        case VRSN:
+            if (is_pressed) {
+                send_string_with_delay_P(PSTR(
+                  "# " QMK_KEYBOARD "/" QMK_KEYMAP ":" QMK_VERSION " " QMK_BUILDDATE "\n"
+                ), TAP_CODE_DELAY);
+            }
+            return false;
+
+        case LOD:
+        case RUPA:
+            if (is_pressed) {
+                if (keycode == LOD) {
+                    send_unicode_string((is_shifted ? "¯\\_(ツ)_/¯" : "ಠ_ಠ"));
+                } else if (keycode == RUPA) {
+                    send_unicode_string((is_shifted ? "Śrīrūpa" : "rūpa"));
+                }
+            }
+            return false;
+
+        // script modes
+        case U_FRACT:
+        case U_MONOS:
+        case U_SCRPT:
+            if (is_pressed) {
+                if (keycode == U_SCRPT) {
+                    translator = (translator == &script_bold ? NULL : &script_bold);
+                } else if (keycode == U_FRACT) {
+                    translator = (translator == &fraktu_bold ? NULL : &fraktu_bold);
+                } else if (keycode == U_MONOS) {
+                    translator = (translator == &monosp_bold ? NULL : &monosp_bold);
+                }
+            }
+            return true;
+
+        default:
+            if (is_pressed && translator != NULL) {
+                return script_mode_translate(translator, is_shifted, keycode);
+            }
+    }
+    return process_record_keymap(keycode, record);
+}
diff --git a/users/rupa/process_records.h b/users/rupa/process_records.h
new file mode 100755
index 0000000000..7c7fe491be
--- /dev/null
+++ b/users/rupa/process_records.h
@@ -0,0 +1,21 @@
+/*
+Copyright 2020 rupa <rupa@lrrr.us> @rupa
+
+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/>.
+*/
+
+#pragma once
+#include "rupa.h"
+
+bool process_record_keymap(uint16_t keycode, keyrecord_t *record);
diff --git a/users/rupa/rules.mk b/users/rupa/rules.mk
new file mode 100644
index 0000000000..c4f147d913
--- /dev/null
+++ b/users/rupa/rules.mk
@@ -0,0 +1,3 @@
+SRC += rupa.c \
+       process_records.c \
+       unicode.c
diff --git a/users/rupa/rupa.c b/users/rupa/rupa.c
new file mode 100755
index 0000000000..60fec3caf0
--- /dev/null
+++ b/users/rupa/rupa.c
@@ -0,0 +1,49 @@
+/*
+Copyright 2020 rupa <rupa@lrrr.us> @rupa
+
+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 <print.h>
+#include "rupa.h"
+
+// https://en.wikipedia.org/wiki/Mathematical_Alphanumeric_Symbols
+font_t script_bold = {0x1D4D0, 0x1D4EA, 0x1D7CE}; // with bold numbers
+font_t fraktu_bold = {0x1D56C, 0x1D586, 0x1D7D8}; // with doublestruck numbers
+font_t monosp_bold = {0x1D670, 0x1D68A, 0x1D7F6};
+
+// Maps A-Z, a-z, and 0-9 to other unicode ranges. We also map space to EN
+// SPACE for some reason :)
+uint32_t map_alnum(font_t *f, bool is_shifted, uint32_t keycode) {
+    switch (keycode) {
+        case KC_SPACE:
+            return (is_shifted ? 0 : 0x2002); // EN SPACE
+        case KC_0:
+            return (is_shifted ? 0 : f->zero_glyph);
+        case KC_A ... KC_Z:
+            return (is_shifted ? f->upper_alpha : f->lower_alpha) + keycode - KC_A;
+        case KC_1 ... KC_9:
+            return (is_shifted ? 0 : f->zero_glyph + keycode - KC_1 + 1);
+        default:
+            return 0;
+    }
+}
+
+bool script_mode_translate(font_t *translator, bool is_shifted, uint32_t keycode) {
+    uint32_t translated = map_alnum(translator, is_shifted, keycode);
+    if (translated == 0) return true;
+    dprintf("script_mode_translate: %u => %d\n", keycode, translated);
+    register_unicode(translated);
+    return false;
+}
diff --git a/users/rupa/rupa.h b/users/rupa/rupa.h
new file mode 100755
index 0000000000..9be3a2d62f
--- /dev/null
+++ b/users/rupa/rupa.h
@@ -0,0 +1,54 @@
+/*
+Copyright 2020 rupa <rupa@lrrr.us> @rupa
+
+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/>.
+*/
+
+#pragma once
+#include QMK_KEYBOARD_H
+#include "version.h"
+#include "process_records.h"
+#include "unicode.h"
+
+enum userspace_layers {
+    _QWERTY = 0,
+    _RAISE,
+};
+
+enum userspace_custom_keycodes {
+    VRSN = SAFE_RANGE,
+    LOD,
+    RUPA,
+    U_FRACT,
+    U_MONOS,
+    U_SCRPT,
+};
+
+typedef struct font_t {
+    uint32_t upper_alpha;
+    uint32_t lower_alpha;
+    uint32_t zero_glyph;
+} font_t;
+
+font_t fraktu_bold;
+font_t monosp_bold;
+font_t script_bold;
+
+bool script_mode_translate(font_t *translator, bool is_shifted, uint32_t keycode);
+
+#define RAISE   MO(_RAISE)
+#define OS_RGUI OSM(MOD_RGUI)
+#define OS_RALT OSM(MOD_RALT)
+#define OS_RCTL OSM(MOD_RCTL)
+#define OS_RSFT OSM(MOD_RSFT)
diff --git a/users/rupa/unicode.c b/users/rupa/unicode.c
new file mode 100755
index 0000000000..89a0d47665
--- /dev/null
+++ b/users/rupa/unicode.c
@@ -0,0 +1,42 @@
+/*
+Copyright 2020 rupa <rupa@lrrr.us> @rupa
+
+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 "unicode.h"
+
+#if defined(UNICODEMAP_ENABLE)
+const uint32_t PROGMEM unicode_map[] = {
+    [CHEK] = 0x2713, // ✓
+    /*
+    [DI1]  = 0x2680, // ⚀
+    [DI2]  = 0x2681, // ⚁
+    [DI3]  = 0x2682, // ⚂
+    [DI4]  = 0x2683, // ⚃
+    [DI5]  = 0x2684, // ⚄
+    [DI6]  = 0x2685, // ⚅
+    */
+    [HAS]  = 0x262D, // ☭
+    [IBNG] = 0x203D, // ‽
+    [IRNY] = 0x2E2E, // ⸮
+    [M4]   = 0x2669, // ♩
+    [M8]   = 0x266A, // ♪
+    [M8B]  = 0x266B, // ♫
+    [M16]  = 0x266C, // ♬
+    [OM]   = 0x0950, // ॐ
+    [STB]  = 0x2605, // ★
+    [STW]  = 0x2606, // ☆
+};
+#endif
diff --git a/users/rupa/unicode.h b/users/rupa/unicode.h
new file mode 100755
index 0000000000..0c067bd913
--- /dev/null
+++ b/users/rupa/unicode.h
@@ -0,0 +1,43 @@
+/*
+Copyright 2020 rupa <rupa@lrrr.us> @rupa
+
+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/>.
+*/
+
+#pragma once
+#include "rupa.h"
+
+#if defined(UNICODEMAP_ENABLE)
+enum unicode_names {
+    CHEK,
+    /*
+    DI1, // ⚀
+    DI2, // ⚁
+    DI3, // ⚂
+    DI4, // ⚃
+    DI5, // ⚄
+    DI6, // ⚅
+    */
+    HAS,  // ☭
+    IBNG, // ‽
+    IRNY, // ⸮
+    M4,   // ♩
+    M8,   // ♪
+    M8B,  // ♫
+    M16,  // ♬
+    OM,   // ॐ
+    STB,  // ★
+    STW,  // ☆
+};
+#endif