包含PDF页面时保持链接

hbghlyj

如果想在外部的PDF上做笔记但是没有源码,可使用PdfPages或PdfOverlay插入该PDF的页面
但是发现Bookmark[显示于阅读器的书签栏,用于快速跳转章节] 和 Link annotation [包括文档内链(Named destination)或Web URL]

使用pax或newpax包
对于一个PDF运行pax时需要运行它包含的Java程序pax.jar提取 Link annotation

1. java -jar "D:\MiKTeX\scripts\pax\pax.jar" externel.pdf

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它会生成 externel.pax [对同一个PDF只需运行一次pax.jar 因为下次编译TeX时externel.pax仍然可用]
在LaTeX导言区添加1行

1. \usepackage{pax}

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然后运行两次 pdflatex

1. pdflatex test
2. pdflatex test

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它会将从原PDF提取Link annotation并插入新PDF [经测试成功了✅]

---

更好的解法是pdftk
它可以从原PDF中提取Bookmark并插入新PDF [经测试成功了✅]

1. pdftk "external.pdf" dump_data >data.info
2. pdftk "my notes.pdf" update_info data.info output "my notes with bookmarks.pdf"

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并且可以从原PDF提取Link annotation并插入新PDF [与pax等效] [经测试失败了😥]

1. pdftk "external.pdf" dump_data_annots >annots.info
2. pdftk "my notes.pdf" update_info annots.info output "my notes with links.pdf"

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hbghlyj

annots.info的内容应该是Link Annotation所在的页数的和矩形区域的顶点坐标
但是这里面好像没有链接的目标位置的信息呢

1. NumberOfPages: 47
2. ---
3. AnnotSubtype: Link
4. AnnotRect: 56.693 580.761 139.587 592.885
5. AnnotPageNumber: 1
6. ---
7. AnnotSubtype: Link
8. AnnotRect: 56.693 556.303 282.74 568.426
9. AnnotPageNumber: 1
10. ---
11. AnnotSubtype: Link
12. AnnotRect: 73.057 542.753 193.25 554.877
13. AnnotPageNumber: 1
14. ...(后面的Link都是以上的格式)

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将annots.info插入LaTeX生成的新PDF时报错
pdftk Warning: unexpected case 1 in LoadDataFile(); continuing
pdftk Warning: unexpected case 1 in LoadDataFile(); continuing
pdftk Warning: unexpected case 1 in LoadDataFile(); continuing
pdftk Warning: unexpected case 1 in LoadDataFile(); continuing
pdftk Warning: unexpected case 1 in LoadDataFile(); continuing
pdftk Warning: unexpected case 1 in LoadDataFile(); continuing
pdftk Warning: unexpected case 1 in LoadDataFile(); continuing
...(后面很多行重复的)
看来这个annots.info不靠谱, 还是用Pax吧.
pax.jar生成的.pax的内容为

1. \[{pax}{0.1l}\\
2. \[{file}{\<4C656374757265206E6F74657320545432332E706466\>}{
3.   Size={428335},
4.   Date={D:20230504122743+01'00'},
5. }\\
6. \[{pagenum}{47}\\
7. \[{page}{1}{0 0 595.28 841.89}{}\\
8. \[{annot}{1}{Link}{56.693 580.761 139.587 592.885}{GoTo}{
9.   C={[1 0 0]},
10.   H={/I},
11.   DestLabel={1},
12.   Border={[0 0 0]},
13. }\\
14. \[{annot}{1}{Link}{56.693 556.303 282.74 568.426}{GoTo}{
15.   C={[1 0 0]},
16.   H={/I},
17.   DestLabel={2},
18.   Border={[0 0 0]},
19. }\\
20. \[{annot}{1}{Link}{73.057 542.753 193.25 554.877}{GoTo}{
21.   C={[1 0 0]},
22.   H={/I},
23.   DestLabel={3},
24.   Border={[0 0 0]},
25. }\\
26. \[{annot}{1}{Link}{73.057 529.204 190.278 541.328}{GoTo}{
27.   C={[1 0 0]},
28.   H={/I},
29.   DestLabel={4},
30.   Border={[0 0 0]},
31. }\\
32. \[{annot}{1}{Link}{73.057 515.655 275.25 527.779}{GoTo}{
33.   C={[1 0 0]},
34.   H={/I},
35.   DestLabel={5},
36.   Border={[0 0 0]},
37. }\\
38. \[{annot}{1}{Link}{56.693 491.197 243.767 503.32}{GoTo}{
39.   C={[1 0 0]},
40.   H={/I},
41.   DestLabel={6},
42.   Border={[0 0 0]},
43. }\\
44. \[{annot}{1}{Link}{73.057 477.648 211.649 489.771}{GoTo}{
45.   C={[1 0 0]},
46.   H={/I},
47.   DestLabel={7},
48.   Border={[0 0 0]},
49. }\\
50. ...(后面都是差不多的)

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hbghlyj

data.info的内容是从Trailer部分提取的(包含了文档信息、创建文档的软件、页面信息、Bookmark)

InfoBegin
InfoKey: Creator
InfoValue: LaTeX with hyperref
InfoBegin
InfoKey: Producer
InfoValue: xdvipdfmx (20211117)
InfoBegin
InfoKey: CreationDate
InfoValue: D:20230504095230-00'00'
PdfID0: b324f5944f70b9da02c8ff186cf2d403
PdfID1: acca4d25e8c27510dddef7042cf25e38
NumberOfPages: 47
BookmarkBegin
BookmarkTitle: Index of Notation
BookmarkLevel: 1
BookmarkPageNumber: 2
BookmarkBegin
BookmarkTitle: Review from A1: Linear maps and continuity
BookmarkLevel: 1
BookmarkPageNumber: 3
BookmarkBegin
BookmarkTitle: Normed vector spaces
BookmarkLevel: 2
BookmarkPageNumber: 3
BookmarkBegin
BookmarkTitle: Bounded linear maps
BookmarkLevel: 2
BookmarkPageNumber: 5
BookmarkBegin
BookmarkTitle: Finite dimensional normed vector spaces
BookmarkLevel: 2
BookmarkPageNumber: 6
BookmarkBegin
BookmarkTitle: The derivative in higher dimensions
BookmarkLevel: 1
BookmarkPageNumber: 8
BookmarkBegin
BookmarkTitle: The one-dimensional case
BookmarkLevel: 2
BookmarkPageNumber: 8
BookmarkBegin
BookmarkTitle: The general case
BookmarkLevel: 2
BookmarkPageNumber: 10
BookmarkBegin
BookmarkTitle: Partial derivatives and the total derivative
BookmarkLevel: 2
BookmarkPageNumber: 13
BookmarkBegin
BookmarkTitle: The Chain Rule
BookmarkLevel: 2
BookmarkPageNumber: 15
BookmarkBegin
BookmarkTitle: The Mean Value Inequality
BookmarkLevel: 2
BookmarkPageNumber: 16
BookmarkBegin
BookmarkTitle: Continuity of partial derivatives and the existence of the total derivative
BookmarkLevel: 2
BookmarkPageNumber: 17
BookmarkBegin
BookmarkTitle: Real-valued functions on an inner product space
BookmarkLevel: 2
BookmarkPageNumber: 19
BookmarkBegin
BookmarkTitle: *Higher order derivatives
BookmarkLevel: 2
BookmarkPageNumber: 20
BookmarkBegin
BookmarkTitle: The Inverse and Implicit Function Theorems
BookmarkLevel: 1
BookmarkPageNumber: 22
BookmarkBegin
BookmarkTitle: The Inverse Function Theorem
BookmarkLevel: 2
BookmarkPageNumber: 22
BookmarkBegin
BookmarkTitle: *Proof of the Inverse Function Theorem
BookmarkLevel: 2
BookmarkPageNumber: 23
BookmarkBegin
BookmarkTitle: Applications of the Inverse Function Theorem
BookmarkLevel: 2
BookmarkPageNumber: 26
BookmarkBegin
BookmarkTitle: Systems of local coordinates and the Implicit Function Theorem.
BookmarkLevel: 2
BookmarkPageNumber: 26
BookmarkBegin
BookmarkTitle: Lagrange multipliers
BookmarkLevel: 2
BookmarkPageNumber: 31
BookmarkBegin
BookmarkTitle: Submanifolds of a normed vector space
BookmarkLevel: 1
BookmarkPageNumber: 34
BookmarkBegin
BookmarkTitle: Definition and basic properties
BookmarkLevel: 2
BookmarkPageNumber: 34
BookmarkBegin
BookmarkTitle: Tangent spaces and normal vectors
BookmarkLevel: 2
BookmarkPageNumber: 37
BookmarkBegin
BookmarkTitle: *Abstract Manifolds
BookmarkLevel: 2
BookmarkPageNumber: 39
BookmarkBegin
BookmarkTitle: Appendix
BookmarkLevel: 1
BookmarkPageNumber: 41
BookmarkBegin
BookmarkTitle: Notation:  and
BookmarkLevel: 2
BookmarkPageNumber: 41
BookmarkBegin
BookmarkTitle: *Multilinear maps and higher derivatives
BookmarkLevel: 2
BookmarkPageNumber: 42
BookmarkBegin
BookmarkTitle: *Symmetries of higher derivatives
BookmarkLevel: 2
BookmarkPageNumber: 42
BookmarkBegin
BookmarkTitle: *The immersion criterion for a submanifold
BookmarkLevel: 2
BookmarkPageNumber: 44
BookmarkBegin
BookmarkTitle: *Normed vector spaces: duals and quotients
BookmarkLevel: 2
BookmarkPageNumber: 45
PageMediaBegin
PageMediaNumber: 1
PageMediaRotation: 0
PageMediaRect: 0 0 595.28 841.89
PageMediaDimensions: 595.28 841.89
PageMediaBegin
PageMediaNumber: 2
PageMediaRotation: 0
PageMediaRect: 0 0 595.28 841.89
PageMediaDimensions: 595.28 841.89
PageMediaBegin
PageMediaNumber: 3
PageMediaRotation: 0
PageMediaRect: 0 0 595.28 841.89
PageMediaDimensions: 595.28 841.89
PageMediaBegin
PageMediaNumber: 4
PageMediaRotation: 0
PageMediaRect: 0 0 595.28 841.89
PageMediaDimensions: 595.28 841.89
...(后面的Page都是以上格式的)

用PDFTk插入data.info成功了,新PDF出现了与原来相同的书签

hbghlyj

如果在LaTeX内部用\write18运行pdftk, 则pdftk收到的是空的pdf, 因为LaTeX正在运行, 不能使pdftk收到LaTeX运行完的PDF.
换一种方法,在VScode的LaTex Workshop extension中新建recipe
在"latex-workshop.latex.recipes"中加入

1.         {
2.             "name": "pdftk",
3.             "tools": [
4.                 "latexmk",
5.                 "pdftk"
6.             ]
7.         }

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在"latex-workshop.latex.tools"中加入

1.         {
2.             "name":"pdftk",
3.             "command":"pdftk",
4.             "args":[
5.                 "%DOC%.pdf",
6.                 "update_info",
7.                 "%DOC%.info",
8.                 "output",
9.                 "%DOC%(Bookmark).pdf"
10.             ]
11.         },

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Ctrl+Shift+P进入editor commands 输入recipe选择pdftk