From fff06404696bb8790901cdefe016cd8d0fe856cb Mon Sep 17 00:00:00 2001
From: Bad Diode <bd@badd10de.dev>
Date: Fri, 25 Aug 2023 15:42:58 +0200
Subject: Add pattern chain buttons behaviour (toggle/clear/random)

---
 src/drawing.c | 75 +++++++++++++++++++++++++++++++++++++++++++++++++++--------
 1 file changed, 65 insertions(+), 10 deletions(-)

(limited to 'src/drawing.c')

diff --git a/src/drawing.c b/src/drawing.c
index 50f3de3..e94d0ff 100644
--- a/src/drawing.c
+++ b/src/drawing.c
@@ -594,9 +594,19 @@ draw_piano(void) {
     draw_rect(x0, y0, x1, y1, COL_FG);
     for (size_t i = 0; i < 12 * 6; i++) {
         u8 clr = COL_FG;
+        s8 pos = i % 12;
+        switch (pos) {
+            case 0:
+            case 2:
+            case 4:
+            case 5:
+            case 7:
+            case 9:
+            case 11: break;
+            default: { clr = COL_BG; } break;
+        }
         if (input_handler == handle_right_col_selection &&
                 right_col_selection_loc == R_COL_SCALE) {
-            s8 pos = i % 12;
             if (pos == current_scale_root) {
                 clr = COL_ACC_1;
             } else {
@@ -1277,13 +1287,38 @@ clear_cursors(void) {
 
 void
 draw_pattern_chain_cursor(void) {
-    size_t offset_x = (PAT_TRIG_H + 7) * (param_selection_loc % 8);
-    size_t offset_y = param_selection_loc < 8 ? 0 : 0 + PAT_TRIG_OFFSET_Y;
-    size_t x0 = PAT_TRIG_START_X + offset_x;
-    size_t x1 = PAT_TRIG_START_X + offset_x + PAT_TRIG_W;
-    size_t y  = PAT_TRIG_START_Y + offset_y + PAT_TRIG_H + 2;
-    draw_line(x0, y, x1, y, COL_ACC_0);
-    draw_line(x0, y + 1, x1, y + 1, COL_ACC_0);
+    switch (param_selection_loc) {
+        case CHAIN_BTN_ENABLE: {
+            size_t x0 = PAT_TRIG_START_X + 24;
+            size_t x1 = x0 + 30;
+            size_t y = PAT_TRIG_START_Y - 16 + 1 + 10;
+            draw_line(x0, y, x1, y, COL_ACC_0);
+            draw_line(x0, y + 1, x1, y + 1, COL_ACC_0);
+        } break;
+        case CHAIN_BTN_CLEAR: {
+            size_t x0 = PAT_TRIG_START_X + 24 + 42;
+            size_t x1 = x0 + 30;
+            size_t y = PAT_TRIG_START_Y - 16 + 1 + 10;
+            draw_line(x0, y, x1, y, COL_ACC_0);
+            draw_line(x0, y + 1, x1, y + 1, COL_ACC_0);
+        } break;
+        case CHAIN_BTN_RANDOM: {
+            size_t x0 = PAT_TRIG_START_X + 24 + 42 * 2;
+            size_t x1 = x0 + 30;
+            size_t y = PAT_TRIG_START_Y - 16 + 1 + 10;
+            draw_line(x0, y, x1, y, COL_ACC_0);
+            draw_line(x0, y + 1, x1, y + 1, COL_ACC_0);
+        } break;
+        default: {
+            size_t offset_x = (PAT_TRIG_H + 7) * (param_selection_loc % 8);
+            size_t offset_y = param_selection_loc < 8 ? 0 : 0 + PAT_TRIG_OFFSET_Y;
+            size_t x0 = PAT_TRIG_START_X + offset_x;
+            size_t x1 = PAT_TRIG_START_X + offset_x + PAT_TRIG_W;
+            size_t y  = PAT_TRIG_START_Y + offset_y + PAT_TRIG_H + 2;
+            draw_line(x0, y, x1, y, COL_ACC_0);
+            draw_line(x0, y + 1, x1, y + 1, COL_ACC_0);
+        } break;
+    }
 }
 
 void
@@ -1756,7 +1791,7 @@ draw_notif_bar() {
             return;
         }
 
-        if (chain.len != 0) {
+        if (chain.len != 0 && chain.enabled) {
             u8 x = x0 + 2;
             u8 y = y0 + 1;
             txt_drawf_small("CHAIN: ", x, y, color);
@@ -1789,6 +1824,7 @@ draw_notif_bar() {
 void
 draw_pattern_chain() {
     clear_parameters();
+    // Pattern chain triggers.
     for (size_t i = 0; i < 16; i++) {
         u8 color = COL_FG;
         size_t offset_x = PAT_TRIG_OFFSET_X * (i % 8);
@@ -1797,12 +1833,15 @@ draw_pattern_chain() {
         size_t x1 = PAT_TRIG_START_X + offset_x + PAT_TRIG_W;
         size_t y0 = PAT_TRIG_START_Y + offset_y;
         size_t y1 = PAT_TRIG_START_Y + offset_y + PAT_TRIG_H;
+        if (!chain.enabled) {
+            color = COL_OFF;
+        }
         draw_rect(x0, y0, x1, y1, color);
         if (chain.active[i]) {
             txt_drawc('A' + chain.chain[i], x0 + 4, y0 + 3, color);
         }
         color = COL_OFF;
-        if (chain.current == i && chain.len != 0) {
+        if (chain.current == i && chain.len != 0 && chain.enabled) {
             color = COL_ACC_2;
             if (chain.active[i]) {
                 txt_drawc('A' + chain.chain[i], x0 + 4, y0 + 3, color);
@@ -1811,4 +1850,20 @@ draw_pattern_chain() {
         }
         draw_line(x0 + 5, y1 - 2, x1 - 5, y1 - 2, color);
     }
+
+    // Pattern chain buttons.
+    size_t x0 = PAT_TRIG_START_X + 24;
+    size_t x1 = x0 + 30;
+    size_t y0 = PAT_TRIG_START_Y - 16 + 1;
+    size_t y1 = y0 + 8;
+    txt_drawf_small("toggle", x0 + 2, y0, COL_FG);
+    draw_rect(x0, y0, x1, y1, COL_FG);
+    x0 += 42;
+    x1 += 42;
+    txt_drawf_small("clear", x0 + 4, y0, COL_FG);
+    draw_rect(x0, y0, x1, y1, COL_FG);
+    x0 += 42;
+    x1 += 42;
+    txt_drawf_small("random", x0 + 2, y0, COL_FG);
+    draw_rect(x0, y0, x1, y1, COL_FG);
 }
-- 
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