fix: 图谱按分组铺满画布坐标，不再挤左上角

apps/desktop/src/main/ipc/handlers.ts

@@ -44,7 +44,7 @@ export function registerIpc(vault: VaultService) {
   ipcMain.handle(IPC.search, async (_e, p: { query: string }) => vault.searchService?.search(p.query) ?? []);
   ipcMain.handle(IPC.tagStats, async () => vault.searchService?.tagStats() ?? []);
   ipcMain.handle(IPC.graph, async () => {
-    const fs2 = vault.fileService; console.log('[GRAPH-HANDLER] fs2?', !!fs2);
+    const fs2 = vault.fileService; 
     if (!fs2) return { nodes: [], edges: [] };
     const tree = await fs2.listTree();
     const gd = await buildGraphData(fs2.getRoot(), tree); return gd;

apps/desktop/src/renderer/features/graph/GraphView.tsx

@@ -6,20 +6,20 @@ import { useStore } from '../../store';
 
 function truncate(s: string, n: number) { return s.length > n ? s.slice(0, n) + '…' : s; }
 
+// 按顶层分组：每组一列，列内纵向均匀排开。坐标基于画布尺寸，保证铺满不挤。
 function layoutNodes(nodes: GraphNode[], w: number, h: number) {
   const groups = new Map<string, GraphNode[]>();
   nodes.forEach(n => { const a = groups.get(n.group) ?? []; a.push(n); groups.set(n.group, a); });
   const groupList = [...groups.entries()];
   const positions = new Map<string, { x: number; y: number }>();
-  if (groupList.length === 0) return positions;
-  const margin = 100;
-  const usableW = Math.max(200, w - margin * 2);
-  const colWidth = usableW / groupList.length;
-  groupList.forEach(([group, items], gi) => {
+  if (groupList.length === 0 || w < 100 || h < 100) return positions;
+  const margin = 80;
+  const colWidth = (w - margin * 2) / Math.max(groupList.length, 1);
+  groupList.forEach(([, items], gi) => {
     const colX = margin + colWidth * gi + colWidth / 2;
-    const rowGap = items.length > 1 ? Math.min(80, (h - margin * 2) / (items.length - 1)) : 0;
-    const startY = h / 2 - ((items.length - 1) * rowGap) / 2;
-    items.forEach((n, ni) => positions.set(n.id, { x: colX, y: startY + ni * rowGap }));
+    const usableH = h - margin * 2;
+    const rowGap = items.length > 1 ? usableH / (items.length + 1) : 0;
+    items.forEach((n, ni) => positions.set(n.id, { x: colX, y: margin + rowGap * (ni + 1) }));
   });
   return positions;
 }
@@ -31,26 +31,19 @@ export function GraphView() {
   useEffect(() => {
     if (!containerRef.current) return;
     const el = containerRef.current;
-    const rect = el.getBoundingClientRect();
-    const w = rect.width || 800, h = rect.height || 600;
     let g: Graph;
     try {
       g = new Graph({
         container: el,
-        width: w,
-        height: h,
+        width: 1200, height: 700,
         autoResize: true,
         node: {
           style: {
-            size: 30,
+            size: 32,
             fill: (d: any) => (d.style && d.style.fill) || '#4a9eff',
-            stroke: '#6a8cff',
-            lineWidth: 2,
+            stroke: '#6a8cff', lineWidth: 2,
             labelText: (d: any) => truncate((d.data && d.data.title) || d.id, 12),
-            labelFill: '#eee',
-            labelFontSize: 12,
-            labelPlacement: 'bottom',
-            labelOffsetY: 6,
+            labelFill: '#eee', labelFontSize: 12, labelPlacement: 'bottom', labelOffsetY: 6,
           }
         } as any,
         edge: { style: { stroke: '#666', lineWidth: 1.5, endArrow: true } } as any,
@@ -59,13 +52,13 @@ export function GraphView() {
     } catch (e) { console.error(e); return; }
 
     invoke(IPC.graph, undefined as never).then((data: GraphData) => {
-      const r = el.getBoundingClientRect();
-      const cw = r.width || 800, ch = r.height || 600;
-      const pos = layoutNodes(data.nodes, cw, ch);
+      const rect = el.getBoundingClientRect();
+      const w = rect.width || 1200, h = rect.height || 700;
+      const pos = layoutNodes(data.nodes, w, h);
       const nodes = data.nodes.map(n => ({
         id: n.id,
-        x: pos.get(n.id)?.x ?? cw / 2,
-        y: pos.get(n.id)?.y ?? ch / 2,
+        x: pos.get(n.id)?.x ?? w / 2,
+        y: pos.get(n.id)?.y ?? h / 2,
         style: { fill: n.color, stroke: n.star ? '#ffd54a' : '#6a8cff' },
         data: { title: n.title, star: n.star },
       }));