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# Slides, a HTML slide generator
# Copyright (C) 2002 Moshe Zadka, Itamar Shtull-Trauring
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of version 2.1 of the GNU Lesser General Public
# License as published by the Free Software Foundation.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""Slides, a HTML slide generator."""
__version__ = "1.0.1"
import os, string, cgi, types
class Lecture:
"""A series of slides.
Arguments:
name -- the name of the presentation, and then pass
*slides -- Slide instances.
When you're done call renderHTML().
"""
css = None
def __init__(self, name, *slides):
self.name = name
self.slides = slides
def renderHTML(self, directory, basename, css=None):
"""Render all slides and their index.
Arguments:
directory -- directory in which to save slides.
basename -- will be called with % index, so e.g. "slide-%d.html".
[css] -- path to CSS file to use in output.
"""
self.css = css
self.renderSlide(self.slides[0], 1, directory, basename, prev=0)
for i in range(1, len(self.slides)-1):
self.renderSlide(self.slides[i], i+1, directory, basename)
i = len(self.slides)-1
self.renderSlide(self.slides[i], i+1, directory, basename, next=0)
self.renderIndex(directory, basename)
def getHeader(self):
"""Return the header for HTML pages."""
result = '<html>\n<head>\n<title>%s</title>\n' % cgi.escape(self.name)
if self.css:
result += '<link rel="stylesheet" type="text/css" href="%s" />\n' % self.css
return result + '</head>\n<body>\n'
def getFooter(self):
"""Return the footer for HTML pages."""
return '<br /><div class="footer"><hr />%s</div></body></html>' % self.name
def getIndexFooter(self):
"""Return the footer for Index page."""
return '<br /></body></html>'
def renderIndex(self, directory, basename):
"""Render the index page of the presentation."""
fp = open(os.path.join(directory, basename % 0), 'w')
fp.write(self.getHeader())
fp.write('<h2>%s</h2>\n' % self.name)
fp.write('<ol>\n')
for i in range(len(self.slides)):
fp.write("<li><a href='%s'>%s</a></li>\n" %
(basename % (i+1), self.slides[i].title))
fp.write('</ol>\n')
fp.write(self.getIndexFooter())
fp.close()
def renderSlide(self, slide, i, directory, basename, prev=1, next=1):
"""Render a single slide."""
html = slide.toHTML()
if prev:
prevName = basename % (i-1)
prev = '<a accesskey="P" href="%s">Prev</a>' % prevName
else:
prev = 'Prev'
if next:
nextName = basename % (i+1)
next = '<a acesskey="N" href="%s">Next</a>' % nextName
else:
next = 'Next'
index = '<a href="%s">Index</a>' % (basename % 0)
result = (self.getHeader() + " | ".join([prev, index, next]) +
html + self.getFooter())
fp = open(os.path.join(directory, basename % i), 'w')
fp.write(result)
fp.close()
class Slide:
"""A slide that contains unnumbered bullets.
Arguments:
title -- the slide's title.
*bullets -- Bullet instances.
"""
start = "<ul>\n"
end = "</ul>\n"
def __init__(self, title, *bullets):
self.title = title
self.bullets = bullets
def toHTML(self):
title = '<h2>%s</h2>' % cgi.escape(self.title)
bullets = []
for bullet in self.bullets:
bullets.append(bullet.toHTML())
return title + self.start + string.join(bullets, '\n') + self.end
class NumSlide(Slide):
"""A slide that contains numbered bullets.
Arguments:
title -- the slide's title.
*bullets -- Bullet instances.
"""
start = "<ol>\n"
end = "</ol>\n"
class SubBullet:
"""A list of bullets that isn't a slide.
Arguments:
*bullets -- Bullet instances.
"""
def __init__(self, *bullets):
self.bullets = bullets
def toHTML(self):
bullets = []
for bullet in self.bullets:
bullets.append(toHTML(bullet))
return '<ul>'+string.join(bullets, '\n')+'</ul>'
class Bullet:
"""A bullet."""
def __init__(self, *texts):
self.texts = texts
def toHTML(self):
return '<li>'+ "".join(map(toHTML, self.texts)) + '</li>\n'
class PRE:
"""A quoted text."""
def __init__(self, text):
self.text = text
def toHTML(self):
return '<pre>\n'+cgi.escape(self.text)+'</pre>'
class URL:
"""A URL."""
def __init__(self, text):
self.text = text
def toHTML(self):
return '<a href="%s">%s</a>' % (self.text, self.text)
def toHTML(text):
"""Convert string or object to HTML."""
if isinstance(text, types.StringType):
return cgi.escape(text)
else:
return text.toHTML()
class Heading:
"""A heading of a given level (1, 2, ...)."""
def __init__(self, num, text):
self.num = num
self.text = text
def toHTML(self):
return '<h%d>%s</h%d>' % (self.num, toHTML(self.text), self.num)
class Center:
"""Center an item."""
def __init__(self, text):
self.text = text
def toHTML(self):
return '<center>%s</center>' % toHTML(self.text)
class Image:
"""An image."""
def __init__(self, image, description=""):
self.image = image
self.description = description
def toHTML(self):
return "<img src='%s' alt='%s' />" % (self.image, self.description)
class TitleSlide(Slide):
def toHTML(self):
title = '<h1>%s</h1>' % toHTML(Center(self.title))
points = []
for point in self.bullets:
points.append(Center(point).toHTML())
return title + '\n'.join(points)
__all__ = ["Lecture", "Slide", "NumSlide", "PRE", "URL", "Bullet",
"SubBullet", "toHTML", "Center", "Heading", "Image", "TitleSlide"]
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