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SF.net SVN: matplotlib:[6730] trunk/matplotlib
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From: <jo...@us...> - 2009-01-01 22:24:03
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Revision: 6730
http://matplotlib.svn.sourceforge.net/matplotlib/?rev=6730&view=rev
Author: jouni
Date: 2009-01-01 22:23:57 +0000 (Thu, 01 Jan 2009)
Log Message:
-----------
Allow multipage pdf files
Modified Paths:
--------------
trunk/matplotlib/CHANGELOG
trunk/matplotlib/lib/matplotlib/backends/backend_pdf.py
Added Paths:
-----------
trunk/matplotlib/examples/pylab_examples/multipage_pdf.py
Modified: trunk/matplotlib/CHANGELOG
===================================================================
--- trunk/matplotlib/CHANGELOG 2008-12-31 20:19:16 UTC (rev 6729)
+++ trunk/matplotlib/CHANGELOG 2009-01-01 22:23:57 UTC (rev 6730)
@@ -1,3 +1,5 @@
+2009-01-02 Allow multipage pdf files. - JKS
+
2008-12-31 Improve pdf usetex by adding support for font effects
(slanting and extending). - JKS
Added: trunk/matplotlib/examples/pylab_examples/multipage_pdf.py
===================================================================
--- trunk/matplotlib/examples/pylab_examples/multipage_pdf.py (rev 0)
+++ trunk/matplotlib/examples/pylab_examples/multipage_pdf.py 2009-01-01 22:23:57 UTC (rev 6730)
@@ -0,0 +1,29 @@
+import numpy as np
+import matplotlib
+from matplotlib.backends.backend_pdf import PdfFile
+from pylab import *
+
+pdf = PdfFile('multipage_pdf.pdf')
+
+figure(figsize=(3,3))
+plot(range(7), [3,1,4,1,5,9,2], 'r-o')
+title('Page One')
+savefig(pdf, format='pdf')
+close()
+
+rc('text', usetex=True)
+figure(figsize=(8,6))
+x = np.arange(0,5,0.1)
+plot(x, np.sin(x), 'b-')
+title('Page Two')
+savefig(pdf, format='pdf')
+close()
+
+rc('text', usetex=False)
+figure(figsize=(4,5))
+plot(x, x*x, 'ko')
+title('Page Three')
+savefig(pdf, format='pdf')
+close()
+
+pdf.close()
Modified: trunk/matplotlib/lib/matplotlib/backends/backend_pdf.py
===================================================================
--- trunk/matplotlib/lib/matplotlib/backends/backend_pdf.py 2008-12-31 20:19:16 UTC (rev 6729)
+++ trunk/matplotlib/lib/matplotlib/backends/backend_pdf.py 2009-01-01 22:23:57 UTC (rev 6730)
@@ -219,6 +219,9 @@
def __repr__(self):
return "<Name %s>" % self.name
+ def __str__(self):
+ return '/' + self.name
+
@staticmethod
def hexify(match):
return '#%02x' % ord(match.group())
@@ -336,13 +339,7 @@
class PdfFile(object):
"""PDF file with one page."""
- def __init__(self, width, height, dpi, filename):
- self.width, self.height = width, height
- self.dpi = dpi
- if rcParams['path.simplify']:
- self.simplify = (width * dpi, height * dpi)
- else:
- self.simplify = None
+ def __init__(self, filename):
self.nextObject = 1 # next free object id
self.xrefTable = [ [0, 65535, 'the zero object'] ]
self.passed_in_file_object = False
@@ -364,17 +361,16 @@
self.rootObject = self.reserveObject('root')
self.infoObject = self.reserveObject('info')
- pagesObject = self.reserveObject('pages')
- thePageObject = self.reserveObject('page 0')
- contentObject = self.reserveObject('contents of page 0')
+ self.pagesObject = self.reserveObject('pages')
+ self.pageList = []
self.fontObject = self.reserveObject('fonts')
self.alphaStateObject = self.reserveObject('extended graphics states')
self.hatchObject = self.reserveObject('tiling patterns')
self.XObjectObject = self.reserveObject('external objects')
- resourceObject = self.reserveObject('resources')
+ self.resourceObject = self.reserveObject('resources')
root = { 'Type': Name('Catalog'),
- 'Pages': pagesObject }
+ 'Pages': self.pagesObject }
self.writeObject(self.rootObject, root)
info = { 'Creator': 'matplotlib ' + __version__ \
@@ -385,23 +381,12 @@
# Possible TODO: Title, Author, Subject, Keywords
self.writeObject(self.infoObject, info)
- pages = { 'Type': Name('Pages'),
- 'Kids': [ thePageObject ],
- 'Count': 1 }
- self.writeObject(pagesObject, pages)
-
- thePage = { 'Type': Name('Page'),
- 'Parent': pagesObject,
- 'Resources': resourceObject,
- 'MediaBox': [ 0, 0, dpi*width, dpi*height ],
- 'Contents': contentObject }
- self.writeObject(thePageObject, thePage)
-
self.fontNames = {} # maps filenames to internal font names
self.nextFont = 1 # next free internal font name
self.dviFontInfo = {} # information on dvi fonts
self.type1Descriptors = {} # differently encoded Type-1 fonts may
# share the same descriptor
+ self.used_characters = {}
self.alphaStates = {} # maps alpha values to graphics state objects
self.nextAlphaState = 1
@@ -426,16 +411,32 @@
'ExtGState': self.alphaStateObject,
'Pattern': self.hatchObject,
'ProcSet': procsets }
- self.writeObject(resourceObject, resources)
+ self.writeObject(self.resourceObject, resources)
- # Start the content stream of the page
+ def newPage(self, width, height):
+ self.endStream()
+
+ self.width, self.height = width, height
+ if rcParams['path.simplify']:
+ self.simplify = (width * 72, height * 72)
+ else:
+ self.simplify = None
+ contentObject = self.reserveObject('page contents')
+ thePage = { 'Type': Name('Page'),
+ 'Parent': self.pagesObject,
+ 'Resources': self.resourceObject,
+ 'MediaBox': [ 0, 0, 72*width, 72*height ],
+ 'Contents': contentObject }
+ pageObject = self.reserveObject('page')
+ self.writeObject(pageObject, thePage)
+ self.pageList.append(pageObject)
+
self.beginStream(contentObject.id,
self.reserveObject('length of content stream'))
def close(self):
- # End the content stream and write out the various deferred
- # objects
self.endStream()
+ # Write out the various deferred objects
self.writeFonts()
self.writeObject(self.alphaStateObject,
dict([(val[0], val[1])
@@ -449,6 +450,12 @@
self.writeObject(self.XObjectObject, xobjects)
self.writeImages()
self.writeMarkers()
+ self.writeObject(self.pagesObject,
+ { 'Type': Name('Pages'),
+ 'Kids': self.pageList,
+ 'Count': len(self.pageList) })
+
+ # Finalize the file
self.writeXref()
self.writeTrailer()
if self.passed_in_file_object:
@@ -471,8 +478,9 @@
self.currentstream = Stream(id, len, self, extra)
def endStream(self):
- self.currentstream.end()
- self.currentstream = None
+ if self.currentstream is not None:
+ self.currentstream.end()
+ self.currentstream = None
def fontName(self, fontprop):
"""
@@ -493,20 +501,27 @@
Fx = Name('F%d' % self.nextFont)
self.fontNames[filename] = Fx
self.nextFont += 1
+ matplotlib.verbose.report(
+ 'Assigning font %s = %s' % (Fx, filename),
+ 'debug')
return Fx
def writeFonts(self):
fonts = {}
for filename, Fx in self.fontNames.items():
+ matplotlib.verbose.report('Embedding font %s' % filename, 'debug')
if filename.endswith('.afm'):
# from pdf.use14corefonts
+ matplotlib.verbose.report('Writing AFM font', 'debug')
fontdictObject = self._write_afm_font(filename)
elif self.dviFontInfo.has_key(filename):
# a Type 1 font from a dvi file; the filename is really the TeX name
+ matplotlib.verbose.report('Writing Type-1 font', 'debug')
fontdictObject = self.embedType1(filename, self.dviFontInfo[filename])
else:
# a normal TrueType font
+ matplotlib.verbose.report('Writing TrueType font', 'debug')
realpath, stat_key = get_realpath_and_stat(filename)
chars = self.used_characters.get(stat_key)
if chars is not None and len(chars[1]):
@@ -1143,8 +1158,7 @@
return cmds
def writePath(self, path, transform):
- cmds = self.pathOperations(
- path, transform, self.simplify)
+ cmds = self.pathOperations(path, transform, self.simplify)
self.output(*cmds)
def reserveObject(self, name=''):
@@ -1198,13 +1212,11 @@
truetype_font_cache = maxdict(50)
afm_font_cache = maxdict(50)
- def __init__(self, file, dpi, image_dpi):
+ def __init__(self, file, image_dpi):
RendererBase.__init__(self)
self.file = file
self.gc = self.new_gc()
- self.file.used_characters = self.used_characters = {}
self.mathtext_parser = MathTextParser("Pdf")
- self.dpi = dpi
self.image_dpi = image_dpi
self.tex_font_map = None
@@ -1235,13 +1247,13 @@
else:
fname = font.fname
realpath, stat_key = get_realpath_and_stat(fname)
- used_characters = self.used_characters.setdefault(
+ used_characters = self.file.used_characters.setdefault(
stat_key, (realpath, set()))
used_characters[1].update([ord(x) for x in s])
def merge_used_characters(self, other):
for stat_key, (realpath, charset) in other.items():
- used_characters = self.used_characters.setdefault(
+ used_characters = self.file.used_characters.setdefault(
stat_key, (realpath, set()))
used_characters[1].update(charset)
@@ -1299,7 +1311,7 @@
def draw_mathtext(self, gc, x, y, s, prop, angle):
# TODO: fix positioning and encoding
width, height, descent, glyphs, rects, used_characters = \
- self.mathtext_parser.parse(s, self.dpi, prop)
+ self.mathtext_parser.parse(s, 72, prop)
self.merge_used_characters(used_characters)
# When using Type 3 fonts, we can't use character codes higher
@@ -1327,7 +1339,6 @@
self._setup_textpos(ox, oy, 0, 0, oldx, oldy)
oldx, oldy = ox, oy
if (fontname, fontsize) != prev_font:
- fontsize *= self.dpi/72.0
self.file.output(self.file.fontName(fontname), fontsize,
Op.selectfont)
prev_font = fontname, fontsize
@@ -1338,7 +1349,6 @@
# as XObjects using the 'Do' command.
if global_fonttype == 3:
for ox, oy, fontname, fontsize, num, symbol_name in glyphs:
- fontsize *= self.dpi/72.0
if is_opentype_cff_font(fontname):
fonttype = 42
else:
@@ -1367,7 +1377,7 @@
texmanager = self.get_texmanager()
fontsize = prop.get_size_in_points()
dvifile = texmanager.make_dvi(s, fontsize)
- dvi = dviread.Dvi(dvifile, self.dpi)
+ dvi = dviread.Dvi(dvifile, 72)
page = iter(dvi).next()
dvi.close()
@@ -1463,7 +1473,7 @@
self.check_gc(gc, gc._rgb)
if ismath: return self.draw_mathtext(gc, x, y, s, prop, angle)
- fontsize = prop.get_size_in_points() * self.dpi/72.0
+ fontsize = prop.get_size_in_points()
if rcParams['pdf.use14corefonts']:
font = self._get_font_afm(prop)
@@ -1593,14 +1603,14 @@
texmanager = self.get_texmanager()
fontsize = prop.get_size_in_points()
dvifile = texmanager.make_dvi(s, fontsize)
- dvi = dviread.Dvi(dvifile, self.dpi)
+ dvi = dviread.Dvi(dvifile, 72)
page = iter(dvi).next()
dvi.close()
# A total height (including the descent) needs to be returned.
return page.width, page.height+page.descent, page.descent
if ismath:
w, h, d, glyphs, rects, used_characters = \
- self.mathtext_parser.parse(s, self.dpi, prop)
+ self.mathtext_parser.parse(s, 72, prop)
elif rcParams['pdf.use14corefonts']:
font = self._get_font_afm(prop)
@@ -1645,14 +1655,14 @@
self.truetype_font_cache[filename] = font
self.truetype_font_cache[key] = font
font.clear()
- font.set_size(prop.get_size_in_points(), self.dpi)
+ font.set_size(prop.get_size_in_points(), 72)
return font
def flipy(self):
return False
def get_canvas_width_height(self):
- return self.file.width / self.dpi, self.file.height / self.dpi
+ return self.file.width / 72.0, self.file.height / 72.0
def new_gc(self):
return GraphicsContextPdf(self.file)
@@ -1887,16 +1897,22 @@
return 'pdf'
def print_pdf(self, filename, **kwargs):
- ppi = 72 # Postscript points in an inch
image_dpi = kwargs.get('dpi', 72) # dpi to use for images
- self.figure.set_dpi(ppi)
+ self.figure.set_dpi(72) # there are 72 pdf points to an inch
width, height = self.figure.get_size_inches()
- file = PdfFile(width, height, ppi, filename)
+ if isinstance(filename, PdfFile):
+ file = filename
+ else:
+ file = PdfFile(filename)
+ file.newPage(width, height)
renderer = MixedModeRenderer(
- width, height, ppi, RendererPdf(file, ppi, image_dpi))
+ width, height, 72, RendererPdf(file, image_dpi))
self.figure.draw(renderer)
renderer.finalize()
- file.close()
+ if file != filename: # we opened the file
+ file.close()
+ else: # multipage file; just finish off the page
+ file.endStream()
class FigureManagerPdf(FigureManagerBase):
pass
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