feat(canvas): refine connections, text styles and icon editing

src/components/canvas/node-style-toolbar.tsx

@@ -0,0 +1,34 @@
+"use client";
+
+import { useContext } from "react";
+import { AnimatePresence, motion, useReducedMotion } from "motion/react";
+import { NodeToolbar, Position, type NodeProps } from "@xyflow/react";
+import { AlignCenter, AlignLeft, AlignRight, Bold, Italic, RotateCw, Underline } from "lucide-react";
+import type { CanvasNode } from "@/lib/canvas";
+import type { TextStyle } from "@/lib/canvas-elements";
+import { NodeEditing } from "./transformable-node";
+import styles from "./canvas.module.css";
+
+export function NodeStyleToolbar({ id, data, selected }: NodeProps<CanvasNode>) {
+  const reduce = useReducedMotion();
+  const editing = useContext(NodeEditing);
+  const style = data.textStyle || {};
+  const text = data.kind === "text" || data.kind === "script" || data.kind === "plain-text";
+  const patch = (value: TextStyle, fontSize?: number) => editing.style(id, value, fontSize);
+  return <NodeToolbar isVisible={true} position={Position.Top} offset={34}>
+    <AnimatePresence>{selected && <motion.div initial={{ opacity: 0, y: reduce ? 0 : 5 }} animate={{ opacity: 1, y: 0 }} exit={{ opacity: 0, y: reduce ? 0 : 5 }} transition={{ duration: reduce ? 0 : 0.14 }} className={`${styles.styleToolbar} nodrag nopan nowheel`} data-node-style={id} role="toolbar" aria-label="元素样式"
+      onPointerDown={(event) => event.stopPropagation()} onKeyDown={(event) => { if (event.key !== "Escape") event.stopPropagation(); }}>
+      {data.kind !== "image" && <label title="文字或图标颜色" className={styles.colorPicker}><span style={{ background: style.color || "#37352f" }} /><input aria-label="文字或图标颜色" type="color" value={style.color || "#37352f"} onChange={(event) => patch({ color: event.target.value })} /></label>}
+      {text && <>
+        <select aria-label="字体" value={style.fontFamily || "sans"} onChange={(event) => patch({ fontFamily: event.target.value as TextStyle["fontFamily"] })}><option value="sans">正文</option><option value="serif">衬线</option><option value="mono">等宽</option></select>
+        <input aria-label="字号" title="字号" type="number" min={8} max={160} value={data.fontSize || (data.kind === "plain-text" ? 24 : 13)} onChange={(event) => { const size = Number(event.target.value); if (size >= 8 && size <= 160) patch({}, size); }} />
+        {([["bold", Bold, "加粗"], ["italic", Italic, "斜体"], ["underline", Underline, "下划线"]] as const).map(([key, Icon, label]) => <button key={key} aria-label={label} aria-pressed={!!style[key]} title={label} onClick={() => patch({ [key]: !style[key] })}><Icon size={16} /></button>)}
+        {([["left", AlignLeft, "左对齐"], ["center", AlignCenter, "居中"], ["right", AlignRight, "右对齐"]] as const).map(([align, Icon, label]) => <button key={align} aria-label={label} aria-pressed={(style.align || "left") === align} title={label} onClick={() => patch({ align })}><Icon size={16} /></button>)}
+        <select aria-label="行距" title="行距" value={style.lineHeight || 1.5} onChange={(event) => patch({ lineHeight: Number(event.target.value) })}><option value={1}>1</option><option value={1.25}>1.25</option><option value={1.5}>1.5</option><option value={1.8}>1.8</option><option value={2}>2</option></select>
+      </>}
+      {data.kind !== "image" && <label className={styles.colorPicker} title="背景色"><span style={{ background: style.background && style.background !== "transparent" ? style.background : "#ffffff" }} /><input aria-label="背景色" type="color" value={style.background && style.background !== "transparent" ? style.background : "#ffffff"} onChange={(event) => patch({ background: event.target.value })} /></label>}
+      {data.kind !== "image" && <button title="清除背景" aria-label="清除背景" onClick={() => patch({ background: "transparent" })}>∅</button>}
+      <button data-rotate-toggle={id} title="旋转模式" aria-label="旋转模式" aria-pressed={editing.rotating === id} onClick={() => editing.rotate(editing.rotating === id ? null : id)}><RotateCw size={16} /></button>
+    </motion.div>}</AnimatePresence>
+  </NodeToolbar>;
+}