From 698dd0485f9c87f8c249807aec9727fc059def62 Mon Sep 17 00:00:00 2001
From: rate <rate98326@gmail.com>
Date: Mon, 27 Dec 2021 12:36:33 +0900
Subject: [PATCH] Enable encoder settings VIA. (#14599)

* Enable encoder settings VIA.

* Apply suggestions from code review

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

* Modified to use action_exec.
Change keymap.

Co-authored-by: Drashna Jaelre <drashna@live.com>
---
 keyboards/pistachio_mp/keymaps/via/keymap.c | 79 ++++++++++++++++-----
 1 file changed, 62 insertions(+), 17 deletions(-)

diff --git a/keyboards/pistachio_mp/keymaps/via/keymap.c b/keyboards/pistachio_mp/keymaps/via/keymap.c
index e3592ffa6..241b501d1 100644
--- a/keyboards/pistachio_mp/keymaps/via/keymap.c
+++ b/keyboards/pistachio_mp/keymaps/via/keymap.c
@@ -23,10 +23,29 @@ enum layer_names {
     _RESERVE_1
 };
 
+static uint8_t encoder_state = 0;
+static const keypos_t ENC_CW = {.row = 3, .col = 3};
+static const keypos_t ENC_CCW = {.row = 4, .col = 1};
+
+#define LAYOUT_via( \
+         ECW,ECCW, K07, \
+    K00, K01, K02, K03, \
+    K04, K05, K06,      \
+    K08, K09, K10, K11, \
+    K12, K13, K14,      \
+    K15,      K16, K17 ) { \
+    { K00,   K01,   K02,   K03 }, \
+    { K04,   K05,   K06,   K07 }, \
+    { K08,   K09,   K10,   K11 }, \
+    { K12,   K13,   K14,   ECCW }, \
+    { K15,   ECW,   K16,   K17 }, \
+}
+
+
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
     /* Base */
-    [_BASE] = LAYOUT(
-                                           KC_MPLY,
+    [_BASE] = LAYOUT_via(
+                           KC_VOLU,KC_VOLD,KC_MPLY,
     LT(_FN, KC_NLCK),  KC_PSLS,  KC_PAST,  KC_PMNS,
     KC_P7,             KC_P8,    KC_P9,
     KC_P4,             KC_P5,    KC_P6,    KC_PPLS,
@@ -34,8 +53,8 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
     KC_P0,                       KC_PDOT,  KC_PENT
     ),
     /* Fn */
-    [_FN] = LAYOUT(
-                                KC_NO,
+    [_FN] = LAYOUT_via(
+                KC_VOLU,KC_VOLD,KC_NO,
     KC_NO,   KC_NO,   KC_NO,    KC_NO,
     RGB_HUI, RGB_SAI, RGB_VAI,
     RGB_HUD, RGB_SAD, RGB_VAD,  RGB_TOG,
@@ -43,8 +62,8 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
     KC_NO,            KC_NO,    KC_NO
     ),
     /* Reserve */
-    [_RESERVE_0] = LAYOUT(
-                                KC_TRNS,
+    [_RESERVE_0] = LAYOUT_via(
+                KC_VOLU,KC_VOLD,KC_TRNS,
     KC_TRNS, KC_TRNS, KC_TRNS,  KC_TRNS,
     KC_TRNS, KC_TRNS, KC_TRNS,
     KC_TRNS, KC_TRNS, KC_TRNS,  KC_TRNS,
@@ -52,8 +71,8 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
     KC_TRNS,          KC_TRNS,  KC_TRNS
     ),
     /* Reserve */
-    [_RESERVE_1] = LAYOUT(
-                                KC_TRNS,
+    [_RESERVE_1] = LAYOUT_via(
+                KC_VOLU,KC_VOLD,KC_TRNS,
     KC_TRNS, KC_TRNS, KC_TRNS,  KC_TRNS,
     KC_TRNS, KC_TRNS, KC_TRNS,
     KC_TRNS, KC_TRNS, KC_TRNS,  KC_TRNS,
@@ -61,16 +80,42 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
     KC_TRNS,          KC_TRNS,  KC_TRNS
     ),
 };
+
 #ifdef ENCODER_ENABLE
-bool encoder_update_user(uint8_t index, bool clockwise) {
-    if (index == 0) {
-        // Volume control
-        if (clockwise) {
-            tap_code(KC_VOLU);
-        } else {
-            tap_code(KC_VOLD);
-        }
+void encoder_action_unregister(void) {
+    if (encoder_state) {
+        keyevent_t encoder_event = (keyevent_t) {
+            .key = encoder_state >> 1 ? ENC_CW : ENC_CCW,
+            .pressed = false,
+            .time = (timer_read() | 1)
+        };
+        encoder_state = 0;
+        action_exec(encoder_event);
     }
-    return true;
+    return;
 }
+
+void encoder_action_register(uint8_t index, bool clockwise) {
+    keyevent_t encoder_event = (keyevent_t) {
+        .key = clockwise ? ENC_CW : ENC_CCW,
+        .pressed = true,
+        .time = (timer_read() | 1)
+    };
+    encoder_state = (clockwise ^ 1) | (clockwise << 1);
+    action_exec(encoder_event);
+    return;
+}
+
+void matrix_scan_kb(void) {
+    encoder_action_unregister();
+    matrix_scan_user();
+    return;
+}
+
+bool encoder_update_kb(uint8_t index, bool clockwise) {
+    encoder_action_register(index, clockwise);
+    // don't return user actions, because they are in the keymap
+    // encoder_update_user(index, clockwise);
+    return true;
+};
 #endif