feat: add on-canvas zoom controls for psd image slots

components/agents/AgentPsdTemplateEditorDialog.tsx

@@ -9,10 +9,12 @@ import {
   Loader2,
   Move,
   MousePointerClick,
+  RefreshCcw,
   Sparkles,
   Type,
   Upload,
   ZoomIn,
+  ZoomOut,
 } from "lucide-react";
 import { fetchUploadWithRetry } from "@/lib/client/upload-with-retry";
 import {
@@ -565,6 +567,20 @@ export function AgentPsdTemplateEditorDialog({
     }));
   }
 
+  function nudgeImageScale(layerId: string, delta: number) {
+    updateImagePlacement(layerId, (current) => ({
+      ...current,
+      scale: Math.max(0.4, Math.min(3, Number((current.scale + delta).toFixed(2)))),
+    }));
+  }
+
+  function resetImagePlacement(layerId: string) {
+    setImagePlacements((current) => ({
+      ...current,
+      [layerId]: getDefaultAgentPsdImagePlacement(),
+    }));
+  }
+
   function handleImageDragStart(
     layer: AgentPsdTemplateImageLayerSlot,
     event: ReactPointerEvent<HTMLDivElement>
@@ -611,6 +627,21 @@ export function AgentPsdTemplateEditorDialog({
     window.addEventListener("pointercancel", handlePointerUp);
   }
 
+  function handleImageWheel(
+    layer: AgentPsdTemplateImageLayerSlot,
+    event: ReactPointerEvent<HTMLDivElement>
+  ) {
+    if (!String(effectiveImageAssignments[layer.id] || "").trim()) {
+      return;
+    }
+
+    event.preventDefault();
+    event.stopPropagation();
+
+    const delta = event.deltaY < 0 ? 0.08 : -0.08;
+    nudgeImageScale(layer.id, delta);
+  }
+
   async function handleRender() {
     if (!selectedTemplate) {
       toast.error("请先选择 PSD 模板");
@@ -898,6 +929,7 @@ export function AgentPsdTemplateEditorDialog({
                             tabIndex={0}
                             onClick={() => setSelectedLayerId(layer.id)}
                             onPointerDown={(event) => handleImageDragStart(layer, event)}
+                            onWheel={(event) => handleImageWheel(layer, event)}
                             className="absolute overflow-hidden rounded-lg transition-all"
                             style={{
                               ...frameStyle,
@@ -912,9 +944,50 @@ export function AgentPsdTemplateEditorDialog({
                             <div className="absolute left-2 top-2 rounded-full bg-black/70 px-2 py-1 text-[11px] text-white">
                               {layer.layerName}
                             </div>
+                            <div className="absolute right-2 top-2 flex items-center gap-1 rounded-full bg-black/70 p-1 text-white shadow-lg">
+                              <button
+                                type="button"
+                                className="rounded-full p-1 transition hover:bg-white/10"
+                                onPointerDown={(event) => event.stopPropagation()}
+                                onClick={(event) => {
+                                  event.stopPropagation();
+                                  nudgeImageScale(layer.id, -0.1);
+                                }}
+                                aria-label="缩小图片"
+                                title="缩小"
+                              >
+                                <ZoomOut className="h-3.5 w-3.5" />
+                              </button>
+                              <button
+                                type="button"
+                                className="rounded-full p-1 transition hover:bg-white/10"
+                                onPointerDown={(event) => event.stopPropagation()}
+                                onClick={(event) => {
+                                  event.stopPropagation();
+                                  nudgeImageScale(layer.id, 0.1);
+                                }}
+                                aria-label="放大图片"
+                                title="放大"
+                              >
+                                <ZoomIn className="h-3.5 w-3.5" />
+                              </button>
+                              <button
+                                type="button"
+                                className="rounded-full p-1 transition hover:bg-white/10"
+                                onPointerDown={(event) => event.stopPropagation()}
+                                onClick={(event) => {
+                                  event.stopPropagation();
+                                  resetImagePlacement(layer.id);
+                                }}
+                                aria-label="重置图片位置和缩放"
+                                title="重置"
+                              >
+                                <RefreshCcw className="h-3.5 w-3.5" />
+                              </button>
+                            </div>
                             <div className="pointer-events-none absolute bottom-2 right-2 flex items-center gap-1 rounded-full bg-orange-500/85 px-2 py-1 text-[11px] text-white">
                               <Move className="h-3 w-3" />
-                              拖动调整
+                              拖动或滚轮缩放
                             </div>
                           </div>
                         ) : (
@@ -1102,12 +1175,7 @@ export function AgentPsdTemplateEditorDialog({
                             type="button"
                             variant="ghost"
                             size="sm"
-                            onClick={() =>
-                              setImagePlacements((current) => ({
-                                ...current,
-                                [selectedImageLayer.id]: getDefaultAgentPsdImagePlacement(),
-                              }))
-                            }
+                            onClick={() => resetImagePlacement(selectedImageLayer.id)}
                           >
                             重置位置与缩放
                           </Button>