[reportlab-users] Multi-level chapter prefixes in TOCs?

[Dinu Gherman]

Dinu Gherman:


> Maybe somebody knows what's going on here? Or is there another,

> less stupid way of doing it? I'm including the modified generator

> script.


I got it! There seems to be some interaction I had not foreseen with
the indexing and/or multi-build mechanism of IndexingFlowable, the
base class of the TableOfContents class.

If I reset the chapter numbers at the beginning of every document
build, I get the desired result. Here are the most significant
lines that I had to change:

dinu$ diff -u test_platypus_toc.py test_platypus_toc2.py
--- test_platypus_toc.py	2008-04-19 12:31:59.000000000 +0200
+++ test_platypus_toc2.py	2008-04-21 16:50:21.000000000 +0200
@@ -56,6 +56,11 @@
          self.addPageTemplates(template)


+    def beforeDocument(self):
+        # This is called before any processing is done on the document.
+        self.chapNum = [0, 0, 0]
+
+
      def afterFlowable(self, flowable):
          "Registers TOC entries and makes outline entries."

@@ -64,7 +69,14 @@
              if styleName[:7] == 'Heading':
                  # Register TOC entries.
                  level = int(styleName[7:])
-                text = flowable.getPlainText()
+
+                # test adding multi-level chap prefixes to toc entries
+                self.chapNum[level] += 1
+                for i in range(level+1, 3):
+                    self.chapNum[i] = 0
+                chapPrefix = ".".join(map(str, self.chapNum)) + " "
+                text = chapPrefix + flowable.getPlainText()
+
                  pageNum = self.page
                  self.notify('TOCEntry', (level, text, pageNum))

And I'm also attaching the whole generator script and PDF output.

Enjoy,

Dinu

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