From 1fa5a5af1aee6591d8ac79a8e610ef92678b02be Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Sun, 23 Mar 2014 11:41:21 +0530
Subject: [PATCH] PDF Output: Enable using javascript inside header and footer
 templates

---
 manual/conversion.rst                       |   8 +++++++-
 resources/compiled_coffeescript.zip         | Bin 81197 -> 81622 bytes
 src/calibre/ebooks/oeb/display/paged.coffee |   6 ++++++
 3 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/manual/conversion.rst b/manual/conversion.rst
index 5576209e01..ad7440e99f 100644
--- a/manual/conversion.rst
+++ b/manual/conversion.rst
@@ -840,7 +840,7 @@ template::
 This will display the title at the left and the author at the right, in a font
 size smaller than the main text.
 
-Finally, you can also use the current section in templates, as shown below::
+You can also use the current section in templates, as shown below::
 
     <p style="text-align:right">_SECTION_</p>
 
@@ -850,6 +850,12 @@ Outline). If the document has no table of contents then it will be replaced by
 empty text. If a single PDF page has multiple sections, the first section on
 the page will be used.
 
+You can even use javascript inside the header and footer templates, for
+example, the following template will cause page numbers to start at 4 instead
+of 1::
+
+    <p id="pagenum" style="text-align:center;"></p><script>document.getElementById("pagenum").innerHTML = "" + (_PAGENUM_ + 3)</script>
+
 .. note:: When adding headers and footers make sure you set the page top and
     bottom margins to large enough values, under the Page Setup section of the
     conversion dialog.
diff --git a/resources/compiled_coffeescript.zip b/resources/compiled_coffeescript.zip
index e404bffba289e3d1009a0a53189efb82e702db00..69db556d5f71ed039e15bffa957fd020e1aaf28b 100644
GIT binary patch
delta 428
zcmZ4ci{;v1mJJhT@F~QUyR3UHx!Nd!fx#$Ya>94X$=hf2@aQNMmF5*E7iAWd6i>d8
zt)YkDD%dKdmF6XvWaj5-6eJd<=9OqFRC6f+L0Mvv0z}XBRicdQ%s|=cg4&Ey91uZu
z&FS|=8H3p%yvdC0!v66^sl}x^CB=FLrNtQ<sbz^d8W35%lGKV4g_;_ud0?({eqIUC
zHYCx^yu8#Rj}TuUkeIr<=H$e5k;!*bIi`1uGjeUto>{2Nqk!y@+xv7TR~{Cf9JQZk
zvh?vy@<7SdlG36)BsCf(8JWd;Y5DmjsYR0w-|B7tbo^ieS}09FXu%lC^zp~!`cl#9
zhL(&*%+c(O)6cUq%1m#vWYl6hATWKMC8Iaf1jXsUEgAKgZdgp$wqiV@lVogeVU(O|
zWNwgRU~FQZmTH)6U}0=*nv`l`W}a%2oMx0}k!+f1rlg~wG`X=<c)Ol8<9|i~s{fkQ

delta 199
zcmccimu2lQmJJhT@U4s}bXj1r`($Sv14C!r<aslePQH+>vH8-hLfy$HkJwM1b7Irv
zovT$h&pvsu08R1qEGx!HCXesa4XqeOr{A(-G-BGsI-Sp&(VbbGpK<zK0Y-)C71oSe
z%+KW+r>|9Hl$8kZW@Tdl0xlqY#l*m%Z_dc@kEvQ|a$~97^dHuY3pCPFjg1VGjm%R`
pEG#UNEmPA>jZ#gFOp;7e6Ah9q%#2KvOwCM84N|usuwfKq0st@aMAHBO

diff --git a/src/calibre/ebooks/oeb/display/paged.coffee b/src/calibre/ebooks/oeb/display/paged.coffee
index 946edd619b..8ed5ae0da1 100644
--- a/src/calibre/ebooks/oeb/display/paged.coffee
+++ b/src/calibre/ebooks/oeb/display/paged.coffee
@@ -8,6 +8,10 @@
 
 log = window.calibre_utils.log
 
+runscripts = (parent) ->
+    for script in parent.getElementsByTagName('script')
+        eval(script.text || script.textContent || script.innerHTML || '')
+
 class PagedDisplay
     # This class is a namespace to expose functions via the
     # window.paged_display object. The most important functions are:
@@ -238,8 +242,10 @@ class PagedDisplay
             section = py_bridge.section()
         if this.header != null
             this.header.innerHTML = this.header_template.replace(/_PAGENUM_/g, pagenum+"").replace(/_TITLE_/g, title+"").replace(/_AUTHOR_/g, author+"").replace(/_SECTION_/g, section+"")
+            runscripts(this.header)
         if this.footer != null
             this.footer.innerHTML = this.footer_template.replace(/_PAGENUM_/g, pagenum+"").replace(/_TITLE_/g, title+"").replace(/_AUTHOR_/g, author+"").replace(/_SECTION_/g, section+"")
+            runscripts(this.footer)
 
     fit_images: () ->
         # Ensure no images are wider than the available width in a column. Note