feat(转换能力): 持零宽链接边框

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 v0.0.0-20260925061819-c89bfccf349d
+	github.com/xiaoqidun/pdfgo v0.0.0-20260925101147-ee88b22d9f03
 	golang.org/x/crypto v0.57.0
 	golang.org/x/image v0.46.0
 	golang.org/x/text v0.42.0

go.sum

@@ -60,8 +60,8 @@ 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 v0.0.0-20260925061819-c89bfccf349d h1:hjdo01d4EsiNe9l0JNyc+Bqfrvdj9XGG786EYxAx3yw=
-github.com/xiaoqidun/pdfgo v0.0.0-20260925061819-c89bfccf349d/go.mod h1:/D0XHgfZ7xNhix95swpNaThpuqoJjVR5wIadogtR5pI=
+github.com/xiaoqidun/pdfgo v0.0.0-20260925101147-ee88b22d9f03 h1:aYnf/5Wz2sS68w+Tr7G/cfiw9p70RBE/dmgxwGbz21k=
+github.com/xiaoqidun/pdfgo v0.0.0-20260925101147-ee88b22d9f03/go.mod h1:/D0XHgfZ7xNhix95swpNaThpuqoJjVR5wIadogtR5pI=
 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_link.go

@@ -41,7 +41,7 @@ func (p *pdfImporter) annotations(ctx context.Context, page *pdfgo.Page, strict
 		if annotation.Subtype != "Link" {
 			return &pdfgo.UnsupportedError{Feature: "annotation " + string(annotation.Subtype)}
 		}
-		for _, key := range []pdfgo.Name{"AP", "AA", "BS", "OC"} {
+		for _, key := range []pdfgo.Name{"AP", "AA", "OC"} {
 			if dict[key] != nil {
 				return &pdfgo.UnsupportedError{Feature: fmt.Sprintf("link annotation field %q", key)}
 			}
@@ -57,14 +57,32 @@ func (p *pdfImporter) annotations(ctx context.Context, page *pdfgo.Page, strict
 				return &pdfgo.UnsupportedError{Feature: "link annotation flags"}
 			}
 		}
+		borderStyle, err := p.reader.Resolve(dict["BS"])
+		if err != nil {
+			return err
+		}
+		if borderStyle != nil {
+			style, ok := borderStyle.(pdfgo.Dictionary)
+			if !ok {
+				return fmt.Errorf("invalid PDF link border style")
+			}
+			width, err := p.reader.Resolve(style["W"])
+			if err != nil {
+				return err
+			}
+			if width != pdfgo.Integer(0) && width != pdfgo.Real(0) {
+				return &pdfgo.UnsupportedError{Feature: "visible link border"}
+			}
+		} else {
 			border, err := p.reader.Resolve(dict["Border"])
 			if err != nil {
 				return err
 			}
 			array, ok := border.(pdfgo.Array)
-		if !ok || len(array) != 3 || (array[2] != pdfgo.Integer(0) && array[2] != pdfgo.Real(0)) {
+			if !ok || len(array) < 3 || (array[2] != pdfgo.Integer(0) && array[2] != pdfgo.Real(0)) {
 				return &pdfgo.UnsupportedError{Feature: "visible link border"}
 			}
+		}
 		action := Action{Event: "CLICK"}
 		target := dict["Dest"]
 		if dict["A"] != nil {