From 3a1bec6f42252dc6c7e498d1de7cfda5f6949c13 Mon Sep 17 00:00:00 2001
From: truthhun <1272881215@qq.com>
Date: Sun, 19 Nov 2023 15:00:59 +0800
Subject: [PATCH] =?UTF-8?q?svg=E5=A4=84=E7=90=86?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 model/util.go               | 18 +++++++++++++++++-
 util/converter/converter.go | 11 +++++++++++
 2 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/model/util.go b/model/util.go
index a4371a4..c9d36d0 100644
--- a/model/util.go
+++ b/model/util.go
@@ -410,7 +410,23 @@ func (m *DBModel) reconvertDocument(doc *Document, ext string) {
 
 		// 2. 转换文档预览文件
 		convertedTargetFile := filepath.Join(cacheDir, fmt.Sprintf("%d%s", i, ext))
-		err = converter.ConvertByImageMagick(dstFile, convertedTargetFile)
+		if strings.HasSuffix(oldExt, ".svg") {
+			// 如果是svg文件，则需要使用inkscape预先转为png
+			tmpFile := filepath.Join(cacheDir, fmt.Sprintf("tmp-%d.png", i))
+			err = converter.ConvertByInkscape(dstFile, tmpFile)
+			if err == nil {
+				if strings.HasSuffix(convertedTargetFile, ".png") {
+					// 如果目标文件是png，则直接使用inkscape转换后的文件
+					convertedTargetFile = tmpFile
+				} else {
+					// 如果目标文件不是png，则需要使用ImageMagick转换
+					err = converter.ConvertByImageMagick(tmpFile, convertedTargetFile)
+					os.RemoveAll(tmpFile)
+				}
+			}
+		} else {
+			err = converter.ConvertByImageMagick(dstFile, convertedTargetFile)
+		}
 		if err != nil {
 			m.logger.Error("reconvertDocument", zap.String("msg", "转换文档预览文件失败"), zap.String("document", doc.Title+doc.Ext), zap.Error(err))
 			return
diff --git a/util/converter/converter.go b/util/converter/converter.go
index 4c0c5bb..63a0db4 100644
--- a/util/converter/converter.go
+++ b/util/converter/converter.go
@@ -546,3 +546,14 @@ func ConvertByImageMagick(src, dst string, moreArgs ...string) (err error) {
 	_, err = command.ExecCommand(imageMagick, args)
 	return
 }
+
+// 通过Inksacpe进行转换，如将svg转为png
+func ConvertByInkscape(src, dst string, moreArgs ...string) (err error) {
+	args := []string{
+		"-o", dst,
+	}
+	args = append(args, moreArgs...)
+	args = append(args, src)
+	_, err = command.ExecCommand(inkscape, args)
+	return
+}