From 87b2a6bebceba02de5b98c2bd963cbb2e363c453 Mon Sep 17 00:00:00 2001
From: pinky <>
Date: Sun, 7 Jan 2007 23:35:02 +0000
Subject: RL2

bzr revid: pinky-9ee609e92f665d717ac2a51b921e52f7f73390c4
---
 bin/reportlab/pdfbase/_can_cmap_data.py | 58 +++++++++++++++++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 bin/reportlab/pdfbase/_can_cmap_data.py

(limited to 'bin/reportlab/pdfbase/_can_cmap_data.py')

diff --git a/bin/reportlab/pdfbase/_can_cmap_data.py b/bin/reportlab/pdfbase/_can_cmap_data.py
new file mode 100644
index 00000000000..c4a7100f5cb
--- /dev/null
+++ b/bin/reportlab/pdfbase/_can_cmap_data.py
@@ -0,0 +1,58 @@
+#
+"""
+This is a utility to 'can' the widths data for certain CID fonts.
+Now we're using Unicode, we don't need 20 CMAP files for each Asian
+language, nor the widths of the non-normal characters encoded in each
+font.  we just want a dictionary of the character widths in a given
+font which are NOT 1000 ems wide, keyed on Unicode character (not CID).
+
+Running off CMAP files we get the following widths...
+>>> font.stringWidth(unicode(','), 10)
+2.5
+>>> font.stringWidth(unicode('m'), 10)
+7.7800000000000002
+>>> font.stringWidth(u'\u6771\u4EAC', 10)
+20.0
+>>> 
+
+"""
+
+from pprint import pprint as pp
+
+from reportlab.pdfbase._cidfontdata import defaultUnicodeEncodings
+from reportlab.pdfbase.cidfonts import UnicodeCIDFont
+
+
+def run():
+
+    buf = []
+    buf.append('widthsByUnichar = {}')
+    for (fontName, (language, encName)) in defaultUnicodeEncodings.items():
+        print 'handling %s : %s : %s' % (fontName, language, encName)
+
+        #this does just about all of it for us, as all the info
+        #we need is present.
+        font = UnicodeCIDFont(fontName)
+
+        widthsByCID = font.face._explicitWidths
+        cmap = font.encoding._cmap
+        nonStandardWidthsByUnichar = {}
+        for (codePoint, cid) in cmap.items():
+            width = widthsByCID.get(cid, 1000)
+            if width <> 1000:
+                nonStandardWidthsByUnichar[unichr(codePoint)] = width
+        
+
+        
+        print 'created font width map (%d items).  ' % len(nonStandardWidthsByUnichar)
+
+        buf.append('widthsByUnichar["%s"] = %s' % (fontName, repr(nonStandardWidthsByUnichar)))
+        
+        
+    src = '\n'.join(buf) + '\n'
+    open('canned_widths.py','w').write(src)
+    print 'wrote canned_widths.py'
+
+if __name__=='__main__':
+    run()
+    
\ No newline at end of file
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