feat(转换能力): 支持原生与网页批量并行

internal/webui/webui.go

@@ -424,6 +424,7 @@ type businessEngine struct {
 	copiedStyle    *ofdgo.GraphicObject
 	ctx            context.Context
 	resolveSource  func(context.Context, any) (io.ReaderAt, int64, error)
+	conversionPool *ofdgo.ConversionPool
 }
 
 // Open 打开浏览器内存中的OFD文档
@@ -1391,6 +1392,7 @@ func (e *businessEngine) convertFile(args []platformValue) (any, error) {
 	}
 	options := ofdgo.ConvertOptions{
 		Format: settings.Get("format").String(), PageRange: settings.Get("pages").String(),
+		Pool:            e.conversionPool,
 		SkipUnchanged:   true,
 		Backends:        &backends,
 		RendererOptions: []ofdgo.RendererOption{ofdgo.WithDPI(settings.Get("dpi").Float())},

internal/webui/webui_native.go

@@ -67,6 +67,8 @@ type NativeOutputTarget struct {
 // hooks应在首次Call前配置，Resolve返回的资源需保持有效直到相应会话关闭
 type NativeEngine struct {
 	businessEngine
+	// ConversionPool 协调不同会话的批量转换资源
+	ConversionPool *ofdgo.ConversionPool
 	// Resolve 按授权标识提供资源读取源
 	Resolve NativeResolver
 	// LoadFont 按名称读取系统字体数据
@@ -134,7 +136,11 @@ func NewNativeEngine(resolve NativeResolver) *NativeEngine { return &NativeEngin
 // 批量输出到非nil目标时必须同时提供ReserveOutput和CleanupOutput，避免误清理既有文件
 // 取消为协作式检查，不能抢占宿主阻塞的ReadAt、字体读取或加密库内部计算
 func (e *NativeEngine) Call(ctx context.Context, name string, args []any, emit func(any)) (result map[string]any) {
-	e.once.Do(func() { e.gate = make(chan struct{}, 1); e.resolveSource = e.source })
+	e.once.Do(func() {
+		e.gate = make(chan struct{}, 1)
+		e.resolveSource = e.source
+		e.conversionPool = e.ConversionPool
+	})
 	if ctx == nil {
 		ctx = context.Background()
 	}