From 7329ba8c8901ee095ad7316b8554c5e44431eebc Mon Sep 17 00:00:00 2001
From: Yasutake Yohei <61961825+yasutakeyohei@users.noreply.github.com>
Date: Mon, 5 Oct 2026 21:46:21 +0900
Subject: bluebey-studio:
 縦書きのセリフとナレーション枠、コック帽改善、小物に鉛筆とコップなど
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セリフを縦書き可能にし、縦書きのナレーションボックスを追加。ハートでも下まぶたを閉じられるようにし、ふつうの目の瞳を少し鼻側へ。HairPlateは髪が無いとき非表示（iPhoneの色ずれ対策）。コック帽をトック帽に、鉛筆とコップを小物に追加。
---
 public/bluebey-studio/src/caption.js | 84 +++++++++++++++++++++++++++++++++---
 1 file changed, 78 insertions(+), 6 deletions(-)

(limited to 'public/bluebey-studio/src/caption.js')

diff --git a/public/bluebey-studio/src/caption.js b/public/bluebey-studio/src/caption.js
index 15f5bf3..1543f0e 100644
--- a/public/bluebey-studio/src/caption.js
+++ b/public/bluebey-studio/src/caption.js
@@ -118,12 +118,19 @@ export function layoutCaption(caption, { width, height, scale = 1, font = null }
   const requested = toNonNegative(state.padding, DEFAULT_PADDING) * resolvedScale;
   const text = typeof state.text === 'string' ? state.text : '';
 
-  const block = layoutBlock(font, text, {
-    fontSize,
-    maxWidth: resolveColumn(state, outWidth, requested),
-    lineHeight,
-    align: alignOf(state),
-  });
+  const vertical = state.vertical === true;
+  const block = vertical
+    ? layoutVertical(text, {
+      fontSize,
+      lineHeight,
+      maxHeight: resolveColumn(state, outHeight, requested),
+    })
+    : layoutBlock(font, text, {
+      fontSize,
+      maxWidth: resolveColumn(state, outWidth, requested),
+      lineHeight,
+      align: alignOf(state),
+    });
 
   // Padding gives way before the bubble does, so a caption that cannot fit with
   // its usual breathing room still fits inside the image.
@@ -169,6 +176,7 @@ export function layoutCaption(caption, { width, height, scale = 1, font = null }
     lineHeight,
     padding,
     scale: resolvedScale,
+    vertical,
     usedOutlines: Boolean(font),
   };
 }
@@ -275,6 +283,9 @@ export function captionToSvg(caption, { width, height, scale = 1, font = null, r
   const text = typeof state.text === 'string' ? state.text : '';
 
   let usedOutlines = Boolean(font) && text.trim() !== '' && hasGlyphs(font, text);
+  // Vertical text falls back to `<text>`: the outline path lays glyphs out
+  // horizontally, and a column of glyphs reads fine as live text.
+  if (layout.vertical) usedOutlines = false;
 
   const parts = [
     '<svg xmlns="http://www.w3.org/2000/svg"'
@@ -339,6 +350,19 @@ function drawText(ctx, layout, state, font) {
   ctx.textAlign = 'left';
   ctx.textBaseline = 'alphabetic';
 
+  if (layout.vertical) {
+    // Columns run right to left; each glyph sits on its own line, upright.
+    for (let i = 0; i < lines.length; i++) {
+      const chars = [...lines[i].text];
+      const x = left + (lines.length - 1 - i) * step;
+      for (let j = 0; j < chars.length; j++) {
+        const y = top + j * fontSize + metrics.ascent;
+        ctx.fillText(chars[j], x, y);
+      }
+    }
+    return;
+  }
+
   for (let i = 0; i < lines.length; i++) {
     const line = lines[i];
     const x = left + alignOffset(align, blockWidth, line.width);
@@ -371,6 +395,26 @@ function liveText(state, layout, font, fill, places) {
   const halfLeading = (step - (metrics.ascent + metrics.descent)) / 2;
   const top = box.y + padding;
 
+  if (layout.vertical) {
+    const attributes = [
+      `font-family="${escapeAttribute(fontFamilyStack(state, Boolean(font)))}"`,
+      `font-size="${formatNumber(fontSize, places)}"`,
+      state.bold ? 'font-weight="bold"' : '',
+      `fill="${escapeAttribute(fill)}"`,
+      'text-anchor="start"',
+    ].filter(Boolean).join(' ');
+    const tspans = [];
+    for (let i = 0; i < lines.length; i++) {
+      const chars = [...lines[i].text];
+      const x = left + (lines.length - 1 - i) * step;
+      for (let j = 0; j < chars.length; j++) {
+        const y = top + j * fontSize + metrics.ascent;
+        tspans.push(`<tspan x="${formatNumber(x, places)}" y="${formatNumber(y, places)}">${escapeText(chars[j])}</tspan>`);
+      }
+    }
+    return `<text ${attributes}>${tspans.join('')}</text>`;
+  }
+
   const attributes = [
     `font-family="${escapeAttribute(fontFamilyStack(state, Boolean(font)))}"`,
     `font-size="${formatNumber(fontSize, places)}"`,
@@ -430,6 +474,34 @@ function layoutBlock(font, text, options) {
   return wrapByCount(text, options);
 }
 
+/**
+ * Vertical (縦書き) layout: each paragraph becomes one column, characters stacked
+ * top to bottom, columns running right to left. A paragraph longer than the
+ * available height is split into more columns.
+ */
+function layoutVertical(text, { fontSize, lineHeight, maxHeight }) {
+  const limit = Number.isFinite(maxHeight) && maxHeight > 0
+    ? Math.max(1, Math.floor(maxHeight / fontSize))
+    : Infinity;
+  const columns = [];
+  for (const paragraph of String(text).split(/\r\n|\r|\n/)) {
+    const chars = [...paragraph];
+    if (chars.length === 0) {
+      columns.push('');
+      continue;
+    }
+    for (let i = 0; i < chars.length; i += limit) {
+      columns.push(chars.slice(i, i + limit).join(''));
+    }
+  }
+  const longest = columns.reduce((max, column) => Math.max(max, [...column].length), 0);
+  return {
+    lines: columns.map((column) => ({ text: column, width: fontSize })),
+    width: columns.length * fontSize * lineHeight,
+    height: longest * fontSize,
+  };
+}
+
 /** Text column in pixels: a fraction of the image, never wider than the image. */
 function resolveColumn(state, outWidth, padding) {
   const fraction = toNonNegative(state.maxWidth, DEFAULT_MAX_WIDTH);
-- 
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