feat(转换能力): 完善表单外观转换

go.mod

@@ -9,7 +9,7 @@ require (
 	github.com/tdewolff/canvas v0.0.0-20260923214215-09804640d00c
 	github.com/tdewolff/font v0.0.0-20260913163313-54f98bb59ee6
 	github.com/xiaoqidun/jbig2 v1.1.1
-	github.com/xiaoqidun/pdfgo v0.0.0-20260928094736-cdc5f892445c
+	github.com/xiaoqidun/pdfgo v0.0.0-20260928103444-c1e05032dc3a
 	golang.org/x/crypto v0.57.0
 	golang.org/x/image v0.46.0
 	golang.org/x/text v0.42.0

go.sum

@@ -62,8 +62,8 @@ github.com/tdewolff/test v1.0.12 h1:7F21DqIajswxuche0geHdrUZRCWE4oko4b7bcmkkrxk=
 github.com/tdewolff/test v1.0.12/go.mod h1:XPuWBzvdUzhCuxWO1ojpXsyzsA5bFoS3tO/Q3kFuTG8=
 github.com/xiaoqidun/jbig2 v1.1.1 h1:SjliS9ZO0e9HX5oYUfBuXrfFsXhWricrSz+XY4zORDI=
 github.com/xiaoqidun/jbig2 v1.1.1/go.mod h1:8QonVWtENmh2kc6l+leqeGl7psb79DWlHDkCpdChjfQ=
-github.com/xiaoqidun/pdfgo v0.0.0-20260928094736-cdc5f892445c h1:6idDj210CT1eyGK/fHDw0hD90GSrLqeRV7ECaP9dfyI=
+github.com/xiaoqidun/pdfgo v0.0.0-20260928103444-c1e05032dc3a h1:ROTJKhSKiF4LHufA5UjBWwGQimvWQV8hU9SxsrkeTWE=
-github.com/xiaoqidun/pdfgo v0.0.0-20260928094736-cdc5f892445c/go.mod h1:4Pf0JO0BEf1uzRY+uZjlMjN/OPn3PYa0YMi6cqPPTLQ=
+github.com/xiaoqidun/pdfgo v0.0.0-20260928103444-c1e05032dc3a/go.mod h1:4Pf0JO0BEf1uzRY+uZjlMjN/OPn3PYa0YMi6cqPPTLQ=
 github.com/xyproto/randomstring v1.0.5 h1:YtlWPoRdgMu3NZtP45drfy1GKoojuR7hmRcnhZqKjWU=
 github.com/xyproto/randomstring v1.0.5/go.mod h1:rgmS5DeNXLivK7YprL0pY+lTuhNQW3iGxZ18UQApw/E=
 github.com/yuin/goldmark v1.8.5 h1:r6N5afV5qj/5S4UTch8agZHJ8UxNCMwX7WjkkJam2NA=

ofdgo_pdf_annot.go

@@ -69,6 +69,21 @@ func (p *pdfImporter) appearanceAnnotation(ctx context.Context, page *pdfgo.Page
 	stamp.clipTexts = make(map[*pdfgo.TextClip]TextObject)
 	stamp.pageWidth, stamp.pageHeight = box.W, box.H
 	nodes, err := p.collectCompositeNodes(func(visitor pdfgo.Visitor) error {
+		if annotation.Subtype == "Widget" {
+			visitor.MarkedContent = func(mark pdfgo.MarkedContentMark) error {
+				if mark.Tag == "Tx" && len(mark.Properties) == 0 {
+					return nil
+				}
+				if mark.Operator == "EMC" {
+					return nil
+				}
+				if p.warning == nil {
+					return &pdfgo.UnsupportedError{Feature: "widget marked content " + string(mark.Tag)}
+				}
+				p.warning(pdfgo.Diagnostic{Message: "PDF widget marked content " + string(mark.Tag) + " not preserved"})
+				return nil
+			}
+		}
 		return p.reader.WalkAnnotationAppearance(ctx, page, annotation, visitor)
 	})
 	if err != nil {
@@ -238,7 +253,7 @@ func (p *pdfImporter) formWidget(ctx context.Context, page *pdfgo.Page, annotati
 		p.report.Warnings = append(p.report.Warnings, pdfgo.Diagnostic{Page: p.page + 1, Message: "hidden PDF form field not transferred"})
 		return nil
 	}
-	if flags&(8|16) != 0 || annotation.Dictionary["OC"] != nil {
+	if annotation.Dictionary["OC"] != nil {
 		return &pdfgo.UnsupportedError{Feature: "widget viewing behavior"}
 	}
 	if err := p.appearanceAnnotation(ctx, page, annotation); err != nil {