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gajim-plural/src/htmltextview.py

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### Copyright (C) 2005 Gustavo J. A. M. Carneiro
### Copyright (C) 2006 Santiago Gala
###
### This library is free software; you can redistribute it and/or
### modify it under the terms of the GNU Lesser General Public
### License as published by the Free Software Foundation; either
### version 2 of the License, or (at your option) any later version.
###
### 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.
'''
A gtk.TextView-based renderer for XHTML-IM, as described in:
http://www.jabber.org/jeps/jep-0071.html
Starting with the version posted by Gustavo Carneiro,
I (Santiago Gala) am trying to make it more compatible
with the markup that docutils generate, and also more
modular.
'''
import gobject
import pango
import gtk
import xml.sax, xml.sax.handler
import re
import warnings
from cStringIO import StringIO
import socket
import time
import urllib2
import operator
if __name__ == '__main__':
from common import i18n
from common import gajim
import tooltips
__all__ = ['HtmlTextView']
whitespace_rx = re.compile('\\s+')
allwhitespace_rx = re.compile('^\\s*$')
# pixels = points * display_resolution
display_resolution = 0.3514598*(gtk.gdk.screen_height() /
float(gtk.gdk.screen_height_mm()))
# embryo of CSS classes
classes = {
#'system-message':';display: none',
'problematic':';color: red',
}
# styles for elements
element_styles = {
'u' : ';text-decoration: underline',
'em' : ';font-style: oblique',
'cite' : '; background-color:rgb(170,190,250); font-style: oblique',
'li' : '; margin-left: 1em; margin-right: 10%',
'strong' : ';font-weight: bold',
'pre' : '; background-color:rgb(190,190,190); font-family: monospace; white-space: pre; margin-left: 1em; margin-right: 10%',
'kbd' : ';background-color:rgb(210,210,210);font-family: monospace',
'blockquote': '; background-color:rgb(170,190,250); margin-left: 2em; margin-right: 10%',
'dt' : ';font-weight: bold; font-style: oblique',
'dd' : ';margin-left: 2em; font-style: oblique'
}
# no difference for the moment
element_styles['dfn'] = element_styles['em']
element_styles['var'] = element_styles['em']
# deprecated, legacy, presentational
element_styles['tt'] = element_styles['kbd']
element_styles['i'] = element_styles['em']
element_styles['b'] = element_styles['strong']
'''
==========
JEP-0071
==========
This Integration Set includes a subset of the modules defined for
XHTML 1.0 but does not redefine any existing modules, nor
does it define any new modules. Specifically, it includes the
following modules only:
- Structure
- Text
* Block
phrasal
addr, blockquote, pre
Struc
div,p
Heading
h1, h2, h3, h4, h5, h6
* Inline
phrasal
abbr, acronym, cite, code, dfn, em, kbd, q, samp, strong, var
structural
br, span
- Hypertext (a)
- List (ul, ol, dl)
- Image (img)
- Style Attribute
Therefore XHTML-IM uses the following content models:
Block.mix
Block-like elements, e.g., paragraphs
Flow.mix
Any block or inline elements
Inline.mix
Character-level elements
InlineNoAnchor.class
Anchor element
InlinePre.mix
Pre element
XHTML-IM also uses the following Attribute Groups:
Core.extra.attrib
TBD
I18n.extra.attrib
TBD
Common.extra
style
...
#block level:
#Heading h
# ( pres = h1 | h2 | h3 | h4 | h5 | h6 )
#Block ( phrasal = address | blockquote | pre )
#NOT ( presentational = hr )
# ( structural = div | p )
#other: section
#Inline ( phrasal = abbr | acronym | cite | code | dfn | em | kbd | q | samp | strong | var )
#NOT ( presentational = b | big | i | small | sub | sup | tt )
# ( structural = br | span )
#Param/Legacy param, font, basefont, center, s, strike, u, dir, menu, isindex
#
'''
BLOCK_HEAD = set(( 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', ))
BLOCK_PHRASAL = set(( 'address', 'blockquote', 'pre', ))
BLOCK_PRES = set(( 'hr', )) #not in xhtml-im
BLOCK_STRUCT = set(( 'div', 'p', ))
BLOCK_HACKS = set(( 'table', 'tr' )) # at the very least, they will start line ;)
BLOCK = BLOCK_HEAD.union(BLOCK_PHRASAL).union(BLOCK_STRUCT).union(BLOCK_PRES).union(BLOCK_HACKS)
INLINE_PHRASAL = set('abbr, acronym, cite, code, dfn, em, kbd, q, samp, strong, var'.split(', '))
INLINE_PRES = set('b, i, u, tt'.split(', ')) #not in xhtml-im
INLINE_STRUCT = set('br, span'.split(', '))
INLINE = INLINE_PHRASAL.union(INLINE_PRES).union(INLINE_STRUCT)
LIST_ELEMS = set( 'dl, ol, ul'.split(', '))
for name in BLOCK_HEAD:
num = eval(name[1])
size = (num-1) // 2
weigth = (num - 1) % 2
element_styles[name] = '; font-size: %s; %s' % ( ('large', 'medium', 'small')[size],
('font-weight: bold', 'font-style: oblique')[weigth],
)
def build_patterns(view, config, interface):
# extra, rst does not mark _underline_ or /it/ up
# actually <b>, <i> or <u> are not in the JEP-0071, but are seen in the wild
basic_pattern = r'(?<!\w|\<|/|:)' r'/[^\s/]' r'([^/]*[^\s/])?' r'/(?!\w|/|:)|'\
r'(?<!\w)' r'_[^\s_]' r'([^_]*[^\s_])?' r'_(?!\w)'
view.basic_pattern_re = re.compile(basic_pattern)
# emoticons
emoticons_pattern = ''
try:
if config.get('emoticons_theme'):
# When an emoticon is bordered by an alpha-numeric character it is NOT
# expanded. e.g., foo:) NO, foo :) YES, (brb) NO, (:)) YES, etc.
# We still allow multiple emoticons side-by-side like :P:P:P
# sort keys by length so :qwe emot is checked before :q
keys = interface.emoticons.keys()
keys.sort(interface.on_emoticon_sort)
emoticons_pattern_prematch = ''
emoticons_pattern_postmatch = ''
emoticon_length = 0
for emoticon in keys: # travel thru emoticons list
emoticon_escaped = re.escape(emoticon) # espace regexp metachars
emoticons_pattern += emoticon_escaped + '|'# | means or in regexp
if (emoticon_length != len(emoticon)):
# Build up expressions to match emoticons next to other emoticons
emoticons_pattern_prematch = emoticons_pattern_prematch[:-1] + ')|(?<='
emoticons_pattern_postmatch = emoticons_pattern_postmatch[:-1] + ')|(?='
emoticon_length = len(emoticon)
emoticons_pattern_prematch += emoticon_escaped + '|'
emoticons_pattern_postmatch += emoticon_escaped + '|'
# We match from our list of emoticons, but they must either have
# whitespace, or another emoticon next to it to match successfully
# [\w.] alphanumeric and dot (for not matching 8) in (2.8))
emoticons_pattern = '|' + \
'(?:(?<![\w.]' + emoticons_pattern_prematch[:-1] + '))' + \
'(?:' + emoticons_pattern[:-1] + ')' + \
'(?:(?![\w.]' + emoticons_pattern_postmatch[:-1] + '))'
except:
pass
# because emoticons match later (in the string) they need to be after
# basic matches that may occur earlier
emot_and_basic_pattern = basic_pattern + emoticons_pattern
view.emot_and_basic_re = re.compile(emot_and_basic_pattern, re.IGNORECASE)
def _parse_css_color(color):
'''_parse_css_color(css_color) -> gtk.gdk.Color'''
if color.startswith('rgb(') and color.endswith(')'):
r, g, b = [int(c)*257 for c in color[4:-1].split(',')]
return gtk.gdk.Color(r, g, b)
else:
return gtk.gdk.color_parse(color)
def style_iter(style):
return (map(lambda x:x.strip(),item.split(':', 1)) for item in style.split(';') if len(item.strip()))
class HtmlHandler(xml.sax.handler.ContentHandler):
"""A handler to display html to a gtk textview.
It keeps a stack of "style spans" (start/end element pairs)
and a stack of list counters, for nested lists.
"""
def __init__(self, textview, startiter):
xml.sax.handler.ContentHandler.__init__(self)
self.textbuf = textview.get_buffer()
self.textview = textview
self.iter = startiter
self.text = ''
self.starting=True
self.preserve = False
self.styles = [] # a gtk.TextTag or None, for each span level
self.list_counters = [] # stack (top at head) of list
# counters, or None for unordered list
def _parse_style_color(self, tag, value):
color = _parse_css_color(value)
tag.set_property('foreground-gdk', color)
def _parse_style_background_color(self, tag, value):
color = _parse_css_color(value)
tag.set_property('background-gdk', color)
tag.set_property('paragraph-background-gdk', color)
#FIXME: when we migrate to 2.10 rm this
if gtk.gtk_version >= (2, 8, 5) or gobject.pygtk_version >= (2, 8, 1):
def _get_current_attributes(self):
attrs = self.textview.get_default_attributes()
self.iter.backward_char()
self.iter.get_attributes(attrs)
self.iter.forward_char()
return attrs
else:
# Workaround http://bugzilla.gnome.org/show_bug.cgi?id=317455
def _get_current_style_attr(self, propname, comb_oper=None):
tags = [tag for tag in self.styles if tag is not None]
tags.reverse()
is_set_name = propname + '-set'
value = None
for tag in tags:
if tag.get_property(is_set_name):
if value is None:
value = tag.get_property(propname)
if comb_oper is None:
return value
else:
value = comb_oper(value, tag.get_property(propname))
return value
class _FakeAttrs(object):
__slots__ = ('font', 'font_scale')
def _get_current_attributes(self):
attrs = self._FakeAttrs()
attrs.font_scale = self._get_current_style_attr('scale',
operator.mul)
if attrs.font_scale is None:
attrs.font_scale = 1.0
attrs.font = self._get_current_style_attr('font-desc')
if attrs.font is None:
attrs.font = self.textview.style.font_desc
return attrs
def __parse_length_frac_size_allocate(self, textview, allocation,
frac, callback, args):
callback(allocation.width*frac, *args)
def _parse_length(self, value, font_relative, block_relative, minl, maxl, callback, *args):
'''Parse/calc length, converting to pixels, calls callback(length, *args)
when the length is first computed or changes'''
if value.endswith('%'):
val = float(value[:-1])
sign = cmp(val,0)
# limits: 1% to 500%
val = sign*max(1,min(abs(val),500))
frac = val/100
if font_relative:
attrs = self._get_current_attributes()
font_size = attrs.font.get_size() / pango.SCALE
callback(frac*display_resolution*font_size, *args)
elif block_relative:
# CSS says 'Percentage values: refer to width of the closest
# block-level ancestor'
# This is difficult/impossible to implement, so we use
# textview width instead; a reasonable approximation..
alloc = self.textview.get_allocation()
self.__parse_length_frac_size_allocate(self.textview, alloc,
frac, callback, args)
self.textview.connect('size-allocate',
self.__parse_length_frac_size_allocate,
frac, callback, args)
else:
callback(frac, *args)
return
val = float(value[:-2])
sign = cmp(val,0)
# validate length
val = sign*max(minl,min(abs(val*display_resolution),maxl))
if value.endswith('pt'): # points
callback(val*display_resolution, *args)
elif value.endswith('em'): # ems, the width of the element's font
attrs = self._get_current_attributes()
font_size = attrs.font.get_size() / pango.SCALE
callback(val*display_resolution*font_size, *args)
elif value.endswith('ex'): # x-height, ~ the height of the letter 'x'
# FIXME: figure out how to calculate this correctly
# for now 'em' size is used as approximation
attrs = self._get_current_attributes()
font_size = attrs.font.get_size() / pango.SCALE
callback(val*display_resolution*font_size, *args)
elif value.endswith('px'): # pixels
callback(val, *args)
else:
try:
# TODO: isn't "no units" interpreted as pixels?
val = int(value)
sign = cmp(val,0)
# validate length
val = sign*max(minl,min(abs(val),maxl))
callback(val, *args)
except:
warnings.warn('Unable to parse length value "%s"' % value)
def __parse_font_size_cb(length, tag):
tag.set_property('size-points', length/display_resolution)
__parse_font_size_cb = staticmethod(__parse_font_size_cb)
def _parse_style_display(self, tag, value):
if value == 'none':
tag.set_property('invisible','true')
# FIXME: display: block, inline
def _parse_style_font_size(self, tag, value):
try:
scale = {
'xx-small': pango.SCALE_XX_SMALL,
'x-small': pango.SCALE_X_SMALL,
'small': pango.SCALE_SMALL,
'medium': pango.SCALE_MEDIUM,
'large': pango.SCALE_LARGE,
'x-large': pango.SCALE_X_LARGE,
'xx-large': pango.SCALE_XX_LARGE,
} [value]
except KeyError:
pass
else:
attrs = self._get_current_attributes()
tag.set_property('scale', scale / attrs.font_scale)
return
if value == 'smaller':
tag.set_property('scale', pango.SCALE_SMALL)
return
if value == 'larger':
tag.set_property('scale', pango.SCALE_LARGE)
return
# font relative (5 ~ 4pt, 110 ~ 72pt)
self._parse_length(value, True, False, 5, 110, self.__parse_font_size_cb, tag)
def _parse_style_font_style(self, tag, value):
try:
style = {
'normal': pango.STYLE_NORMAL,
'italic': pango.STYLE_ITALIC,
'oblique': pango.STYLE_OBLIQUE,
} [value]
except KeyError:
warnings.warn('unknown font-style %s' % value)
else:
tag.set_property('style', style)
def __frac_length_tag_cb(self,length, tag, propname):
styles = self._get_style_tags()
if styles:
length += styles[-1].get_property(propname)
tag.set_property(propname, length)
#__frac_length_tag_cb = staticmethod(__frac_length_tag_cb)
def _parse_style_margin_left(self, tag, value):
# block relative
self._parse_length(value, False, True, 1, 1000, self.__frac_length_tag_cb,
tag, 'left-margin')
def _parse_style_margin_right(self, tag, value):
# block relative
self._parse_length(value, False, True, 1, 1000, self.__frac_length_tag_cb,
tag, 'right-margin')
def _parse_style_font_weight(self, tag, value):
# TODO: missing 'bolder' and 'lighter'
try:
weight = {
'100': pango.WEIGHT_ULTRALIGHT,
'200': pango.WEIGHT_ULTRALIGHT,
'300': pango.WEIGHT_LIGHT,
'400': pango.WEIGHT_NORMAL,
'500': pango.WEIGHT_NORMAL,
'600': pango.WEIGHT_BOLD,
'700': pango.WEIGHT_BOLD,
'800': pango.WEIGHT_ULTRABOLD,
'900': pango.WEIGHT_HEAVY,
'normal': pango.WEIGHT_NORMAL,
'bold': pango.WEIGHT_BOLD,
} [value]
except KeyError:
warnings.warn('unknown font-style %s' % value)
else:
tag.set_property('weight', weight)
def _parse_style_font_family(self, tag, value):
tag.set_property('family', value)
def _parse_style_text_align(self, tag, value):
try:
align = {
'left': gtk.JUSTIFY_LEFT,
'right': gtk.JUSTIFY_RIGHT,
'center': gtk.JUSTIFY_CENTER,
'justify': gtk.JUSTIFY_FILL,
} [value]
except KeyError:
warnings.warn('Invalid text-align:%s requested' % value)
else:
tag.set_property('justification', align)
def _parse_style_text_decoration(self, tag, value):
if value == 'none':
tag.set_property('underline', pango.UNDERLINE_NONE)
tag.set_property('strikethrough', False)
elif value == 'underline':
tag.set_property('underline', pango.UNDERLINE_SINGLE)
tag.set_property('strikethrough', False)
elif value == 'overline':
warnings.warn('text-decoration:overline not implemented')
tag.set_property('underline', pango.UNDERLINE_NONE)
tag.set_property('strikethrough', False)
elif value == 'line-through':
tag.set_property('underline', pango.UNDERLINE_NONE)
tag.set_property('strikethrough', True)
elif value == 'blink':
warnings.warn('text-decoration:blink not implemented')
else:
warnings.warn('text-decoration:%s not implemented' % value)
def _parse_style_white_space(self, tag, value):
if value == 'pre':
tag.set_property('wrap_mode', gtk.WRAP_NONE)
elif value == 'normal':
tag.set_property('wrap_mode', gtk.WRAP_WORD)
elif value == 'nowrap':
tag.set_property('wrap_mode', gtk.WRAP_NONE)
def __length_tag_cb(self, value, tag, propname):
try:
tag.set_property(propname, value)
except:
gajim.log.warn( "Error with prop: " + propname + " for tag: " + str(tag))
def _parse_style_width(self, tag, value):
if value == 'auto':
return
self._parse_length(value, False, False, 1, 1000, self.__length_tag_cb,
tag, "width")
def _parse_style_height(self, tag, value):
if value == 'auto':
return
self._parse_length(value, False, False, 1, 1000, self.__length_tag_cb,
tag, "height")
# build a dictionary mapping styles to methods, for greater speed
__style_methods = dict()
for style in ['background-color', 'color', 'font-family', 'font-size',
'font-style', 'font-weight', 'margin-left', 'margin-right',
'text-align', 'text-decoration', 'white-space', 'display',
'width', 'height' ]:
try:
method = locals()['_parse_style_%s' % style.replace('-', '_')]
except KeyError:
warnings.warn('Style attribute "%s" not yet implemented' % style)
else:
__style_methods[style] = method
del style
# --
def _get_style_tags(self):
return [tag for tag in self.styles if tag is not None]
def _create_url(self, href, title, type_, id_):
'''Process a url tag.
'''
tag = self.textbuf.create_tag(id_)
if href and href[0] != '#':
tag.href = href
tag.type_ = type_ # to be used by the URL handler
tag.connect('event', self.textview.html_hyperlink_handler, 'url', href)
tag.set_property('foreground', '#0000ff')
tag.set_property('underline', pango.UNDERLINE_SINGLE)
tag.is_anchor = True
if title:
tag.title = title
return tag
def _process_img(self, attrs):
'''Process a img tag.
'''
try:
# Wait maximum 1s for connection
socket.setdefaulttimeout(1)
try:
f = urllib2.urlopen(attrs['src'])
except Exception, ex:
gajim.log.debug(str('Error loading image %s ' % attrs['src'] + ex))
pixbuf = None
alt = attrs.get('alt', 'Broken image')
else:
# Wait 0.1s between each byte
try:
f.fp._sock.fp._sock.settimeout(0.5)
except:
pass
# Max image size = 2 MB (to try to prevent DoS)
mem = ''
deadline = time.time() + 3
while True:
if time.time() > deadline:
gajim.log.debug(str('Timeout loading image %s ' % \
attrs['src'] + ex))
mem = ''
alt = attrs.get('alt', '')
if alt:
alt += '\n'
alt += _('Timeout loading image')
break
try:
temp = f.read(100)
except socket.timeout, ex:
gajim.log.debug('Timeout loading image %s ' % attrs['src'] + \
str(ex))
mem = ''
alt = attrs.get('alt', '')
if alt:
alt += '\n'
alt += _('Timeout loading image')
break
if temp:
mem += temp
else:
break
if len(mem) > 2*1024*1024:
alt = attrs.get('alt', '')
if alt:
alt += '\n'
alt += _('Image is too big')
break
pixbuf = None
if mem:
# Caveat: GdkPixbuf is known not to be safe to load
# images from network... this program is now potentially
# hackable ;)
loader = gtk.gdk.PixbufLoader()
dims = [0,0]
def height_cb(length):
dims[1] = length
def width_cb(length):
dims[0] = length
# process width and height attributes
w = attrs.get('width')
h = attrs.get('height')
# override with width and height styles
for attr, val in style_iter(attrs.get('style', '')):
if attr == 'width':
w = val
elif attr == 'height':
h = val
if w:
self._parse_length(w, False, False, 1, 1000, width_cb)
if h:
self._parse_length(h, False, False, 1, 1000, height_cb)
def set_size(pixbuf, w, h, dims):
'''FIXME: floats should be relative to the whole
textview, and resize with it. This needs new
pifbufs for every resize, gtk.gdk.Pixbuf.scale_simple
or similar.
'''
if type(dims[0]) == float:
dims[0] = int(dims[0]*w)
elif not dims[0]:
dims[0] = w
if type(dims[1]) == float:
dims[1] = int(dims[1]*h)
if not dims[1]:
dims[1] = h
loader.set_size(*dims)
if w or h:
loader.connect('size-prepared', set_size, dims)
loader.write(mem)
loader.close()
pixbuf = loader.get_pixbuf()
alt = attrs.get('alt', '')
if pixbuf is not None:
tags = self._get_style_tags()
if tags:
tmpmark = self.textbuf.create_mark(None, self.iter, True)
self.textbuf.insert_pixbuf(self.iter, pixbuf)
self.starting = False
if tags:
start = self.textbuf.get_iter_at_mark(tmpmark)
for tag in tags:
self.textbuf.apply_tag(tag, start, self.iter)
self.textbuf.delete_mark(tmpmark)
else:
self._insert_text('[IMG: %s]' % alt)
except Exception, ex:
gajim.log.error('Error loading image ' + str(ex))
pixbuf = None
alt = attrs.get('alt', 'Broken image')
try:
loader.close()
except:
pass
return pixbuf
def _begin_span(self, style, tag=None, id_=None):
if style is None:
self.styles.append(tag)
return None
if tag is None:
if id_:
tag = self.textbuf.create_tag(id_)
else:
tag = self.textbuf.create_tag() # we create anonymous tag
for attr, val in style_iter(style):
attr = attr.lower()
val = val
try:
method = self.__style_methods[attr]
except KeyError:
warnings.warn('Style attribute "%s" requested '
'but not yet implemented' % attr)
else:
method(self, tag, val)
self.styles.append(tag)
def _end_span(self):
self.styles.pop()
def _jump_line(self):
self.textbuf.insert_with_tags_by_name(self.iter, '\n', 'eol')
self.starting = True
def _insert_text(self, text):
if self.starting and text != '\n':
self.starting = (text[-1] == '\n')
tags = self._get_style_tags()
if tags:
self.textbuf.insert_with_tags(self.iter, text, *tags)
else:
self.textbuf.insert(self.iter, text)
def _starts_line(self):
return self.starting or self.iter.starts_line()
def _flush_text(self):
if not self.text: return
text, self.text = self.text, ''
if not self.preserve:
text = text.replace('\n', ' ')
self.handle_specials(whitespace_rx.sub(' ', text))
else:
self._insert_text(text.strip('\n'))
def _anchor_event(self, tag, textview, event, iter, href, type_):
if event.type == gtk.gdk.BUTTON_PRESS:
self.textview.emit('url-clicked', href, type_)
return True
return False
def handle_specials(self, text):
index = 0
se = self.textview.config.get('show_ascii_formatting_chars')
if self.textview.config.get('emoticons_theme'):
iterator = self.textview.emot_and_basic_re.finditer(text)
else:
iterator = self.textview.basic_pattern_re.finditer(text)
for match in iterator:
start, end = match.span()
special_text = text[start:end]
if start != 0:
self._insert_text(text[index:start])
index = end # update index
#emoticons
possible_emot_ascii_caps = special_text.upper() # emoticons keys are CAPS
if self.textview.config.get('emoticons_theme') and \
possible_emot_ascii_caps in self.textview.interface.emoticons.keys():
#it's an emoticon
emot_ascii = possible_emot_ascii_caps
anchor = self.textbuf.create_child_anchor(self.iter)
img = gtk.Image()
img.set_from_file(self.textview.interface.emoticons[emot_ascii])
img.show()
# TODO: add alt/tooltip with the special_text (a11y)
self.textview.add_child_at_anchor(img, anchor)
else:
# now print it
if special_text.startswith('/'): # it's explicit italics
self.startElement('i', {})
elif special_text.startswith('_'): # it's explicit underline
self.startElement('u', {})
if se: self._insert_text(special_text[0])
self.handle_specials(special_text[1:-1])
if se: self._insert_text(special_text[0])
if special_text.startswith('_'): # it's explicit underline
self.endElement('u')
if special_text.startswith('/'): # it's explicit italics
self.endElement('i')
if index < len(text):
self._insert_text(text[index:])
def characters(self, content):
if self.preserve:
self.text += content
return
if allwhitespace_rx.match(content) is not None and self._starts_line():
self.text += ' '
return
self.text += content
self.starting = False
def startElement(self, name, attrs):
self._flush_text()
klass = [i for i in attrs.get('class',' ').split(' ') if i]
style = ''
#Add styles defined for classes
for k in klass:
if k in classes:
style += classes[k]
tag = None
#FIXME: if we want to use id, it needs to be unique across
# the whole textview, so we need to add something like the
# message-id to it.
#id_ = attrs.get('id',None)
id_ = None
if name == 'a':
#TODO: accesskey, charset, hreflang, rel, rev, tabindex, type
href = attrs.get('href', None)
if not href:
href = attrs.get('HREF', None)
# Gaim sends HREF instead of href
title = attrs.get('title', attrs.get('rel',href))
type_ = attrs.get('type', None)
tag = self._create_url(href, title, type_, id_)
elif name == 'blockquote':
cite = attrs.get('cite', None)
if cite:
tag = self.textbuf.create_tag(id_)
tag.title = title
tag.is_anchor = True
elif name in LIST_ELEMS:
style += ';margin-left: 2em'
elif name == 'img':
tag = self._process_img(attrs)
if name in element_styles:
style += element_styles[name]
# so that explicit styles override implicit ones,
# we add the attribute last
style += ";"+attrs.get('style','')
if style == '':
style = None
self._begin_span(style, tag, id_)
if name == 'br':
pass # handled in endElement
elif name == 'hr':
pass # handled in endElement
elif name in BLOCK:
if not self._starts_line():
self._jump_line()
if name == 'pre':
self.preserve = True
elif name == 'span':
pass
elif name in ('dl', 'ul'):
if not self._starts_line():
self._jump_line()
self.list_counters.append(None)
elif name == 'ol':
if not self._starts_line():
self._jump_line()
self.list_counters.append(0)
elif name == 'li':
if self.list_counters[-1] is None:
li_head = unichr(0x2022)
else:
self.list_counters[-1] += 1
li_head = '%i.' % self.list_counters[-1]
self.text = ' '*len(self.list_counters)*4 + li_head + ' '
self._flush_text()
self.starting = True
elif name == 'dd':
self._jump_line()
elif name == 'dt':
if not self.starting:
self._jump_line()
elif name in ('a', 'img', 'body', 'html'):
pass
elif name in INLINE:
pass
else:
warnings.warn('Unhandled element "%s"' % name)
def endElement(self, name):
endPreserving = False
newLine = False
if name == 'br':
newLine = True
elif name == 'hr':
#FIXME: plenty of unused attributes (width, height,...) :)
self._jump_line()
try:
self.textbuf.insert_pixbuf(self.iter, self.textview.focus_out_line_pixbuf)
#self._insert_text(u'\u2550'*40)
self._jump_line()
except Exception, e:
gajim.log.debug(str('Error in hr'+e))
elif name in LIST_ELEMS:
self.list_counters.pop()
elif name == 'li':
newLine = True
elif name == 'img':
pass
elif name == 'body' or name == 'html':
pass
elif name == 'a':
pass
elif name in INLINE:
pass
elif name in ('dd', 'dt', ):
pass
elif name in BLOCK:
if name == 'pre':
endPreserving = True
else:
warnings.warn("Unhandled element '%s'" % name)
self._flush_text()
if endPreserving:
self.preserve = False
if newLine:
self._jump_line()
self._end_span()
#if not self._starts_line():
# self.text = ' '
class HtmlTextView(gtk.TextView):
def __init__(self):
gobject.GObject.__init__(self)
self.set_wrap_mode(gtk.WRAP_CHAR)
self.set_editable(False)
self._changed_cursor = False
self.connect('motion-notify-event', self.__motion_notify_event)
self.connect('leave-notify-event', self.__leave_event)
self.connect('enter-notify-event', self.__motion_notify_event)
self.get_buffer().create_tag('eol', scale = pango.SCALE_XX_SMALL)
self.tooltip = tooltips.BaseTooltip()
self.config = gajim.config
self.interface = gajim.interface
# end big hack
build_patterns(self,gajim.config,gajim.interface)
def __leave_event(self, widget, event):
if self._changed_cursor:
window = widget.get_window(gtk.TEXT_WINDOW_TEXT)
window.set_cursor(gtk.gdk.Cursor(gtk.gdk.XTERM))
self._changed_cursor = False
def show_tooltip(self, tag):
if not self.tooltip.win:
# check if the current pointer is still over the line
x, y, _ = self.window.get_pointer()
x, y = self.window_to_buffer_coords(gtk.TEXT_WINDOW_TEXT, x, y)
tags = self.get_iter_at_location(x, y).get_tags()
is_over_anchor = False
for tag_ in tags:
if getattr(tag_, 'is_anchor', False):
is_over_anchor = True
break
if not is_over_anchor:
return
text = getattr(tag, 'title', False)
if text:
pointer = self.get_pointer()
position = self.window.get_origin()
self.tooltip.show_tooltip(text, 8, position[1] + pointer[1])
def __motion_notify_event(self, widget, event):
x, y, _ = widget.window.get_pointer()
x, y = widget.window_to_buffer_coords(gtk.TEXT_WINDOW_TEXT, x, y)
tags = widget.get_iter_at_location(x, y).get_tags()
is_over_anchor = False
for tag in tags:
if getattr(tag, 'is_anchor', False):
is_over_anchor = True
break
if self.tooltip.timeout != 0:
# Check if we should hide the line tooltip
if not is_over_anchor:
self.tooltip.hide_tooltip()
if not self._changed_cursor and is_over_anchor:
window = widget.get_window(gtk.TEXT_WINDOW_TEXT)
window.set_cursor(gtk.gdk.Cursor(gtk.gdk.HAND2))
self._changed_cursor = True
self.tooltip.timeout = gobject.timeout_add(500, self.show_tooltip, tag)
elif self._changed_cursor and not is_over_anchor:
window = widget.get_window(gtk.TEXT_WINDOW_TEXT)
window.set_cursor(gtk.gdk.Cursor(gtk.gdk.XTERM))
self._changed_cursor = False
return False
def display_html(self, html):
buffer = self.get_buffer()
eob = buffer.get_end_iter()
## this works too if libxml2 is not available
# parser = xml.sax.make_parser(['drv_libxml2'])
# parser.setFeature(xml.sax.handler.feature_validation, True)
parser = xml.sax.make_parser()
parser.setContentHandler(HtmlHandler(self, eob))
parser.parse(StringIO(html))
# too much space after :)
#if not eob.starts_line():
# buffer.insert(eob, '\n')
change_cursor = None
if __name__ == '__main__':
import os
from common import gajim
class log(object):
def debug(self, text):
print "debug:", text
def warn(self, text):
print "warn;", text
def error(self,text):
print "error;", text
gajim.log=log()
if gajim.config.get('emoticons_theme'):
print "emoticons"
htmlview = HtmlTextView()
path_to_file = os.path.join(gajim.DATA_DIR, 'pixmaps', 'muc_separator.png')
# use this for hr
htmlview.focus_out_line_pixbuf = gtk.gdk.pixbuf_new_from_file(path_to_file)
tooltip = tooltips.BaseTooltip()
def on_textview_motion_notify_event(widget, event):
'''change the cursor to a hand when we are over a mail or an url'''
global change_cursor
pointer_x, pointer_y, spam = htmlview.window.get_pointer()
x, y = htmlview.window_to_buffer_coords(gtk.TEXT_WINDOW_TEXT, pointer_x,
pointer_y)
tags = htmlview.get_iter_at_location(x, y).get_tags()
if change_cursor:
htmlview.get_window(gtk.TEXT_WINDOW_TEXT).set_cursor(
gtk.gdk.Cursor(gtk.gdk.XTERM))
change_cursor = None
tag_table = htmlview.get_buffer().get_tag_table()
over_line = False
for tag in tags:
try:
if tag.is_anchor:
htmlview.get_window(gtk.TEXT_WINDOW_TEXT).set_cursor(
gtk.gdk.Cursor(gtk.gdk.HAND2))
change_cursor = tag
elif tag == tag_table.lookup('focus-out-line'):
over_line = True
except: pass
#if line_tooltip.timeout != 0:
# Check if we should hide the line tooltip
# if not over_line:
# line_tooltip.hide_tooltip()
#if over_line and not line_tooltip.win:
# line_tooltip.timeout = gobject.timeout_add(500,
# show_line_tooltip)
# htmlview.get_window(gtk.TEXT_WINDOW_TEXT).set_cursor(
# gtk.gdk.Cursor(gtk.gdk.LEFT_PTR))
# change_cursor = tag
htmlview.connect('motion_notify_event', on_textview_motion_notify_event)
def handler(texttag, widget, event, iter, kind, href):
if event.type == gtk.gdk.BUTTON_PRESS:
print href
htmlview.html_hyperlink_handler = handler
htmlview.display_html('<div><span style="color: red; text-decoration:underline">Hello</span><br/>\n'
' <img src="http://images.slashdot.org/topics/topicsoftware.gif"/><br/>\n'
' <span style="font-size: 500%; font-family: serif">World</span>\n'
'</div>\n')
htmlview.display_html('<hr />')
htmlview.display_html('''
<p style='font-size:large'>
<span style='font-style: italic'>O<span style='font-size:larger'>M</span>G</span>,
I&apos;m <span style='color:green'>green</span>
with <span style='font-weight: bold'>envy</span>!
</p>
''')
htmlview.display_html('<hr />')
htmlview.display_html('''
<body xmlns='http://www.w3.org/1999/xhtml'>
<p>As Emerson said in his essay <span style='font-style: italic; background-color:cyan'>Self-Reliance</span>:</p>
<p style='margin-left: 5px; margin-right: 2%'>
&quot;A foolish consistency is the hobgoblin of little minds.&quot;
</p>
</body>
''')
htmlview.display_html('<hr />')
htmlview.display_html('''
<body xmlns='http://www.w3.org/1999/xhtml'>
<p style='text-align:center'>Hey, are you licensed to <a href='http://www.jabber.org/'>Jabber</a>?</p>
<p style='text-align:right'><img src='http://www.jabber.org/images/psa-license.jpg'
alt='A License to Jabber'
width='50%' height='50%'
/></p>
</body>
''')
htmlview.display_html('<hr />')
htmlview.display_html('''
<body xmlns='http://www.w3.org/1999/xhtml'>
<ul style='background-color:rgb(120,140,100)'>
<li> One </li>
<li> Two </li>
<li> Three </li>
</ul><hr /><pre style="background-color:rgb(120,120,120)">def fac(n):
def faciter(n,acc):
if n==0: return acc
return faciter(n-1, acc*n)
if n&lt;0: raise ValueError('Must be non-negative')
return faciter(n,1)</pre>
</body>
''')
htmlview.display_html('<hr />')
htmlview.display_html('''
<body xmlns='http://www.w3.org/1999/xhtml'>
<ol style='background-color:rgb(120,140,100)'>
<li> One </li>
<li> Two is nested: <ul style='background-color:rgb(200,200,100)'>
<li> One </li>
<li style='font-size:50%'> Two </li>
<li style='font-size:200%'> Three </li>
<li style='font-size:9999pt'> Four </li>
</ul></li>
<li> Three </li></ol>
</body>
''')
htmlview.show()
sw = gtk.ScrolledWindow()
sw.set_property('hscrollbar-policy', gtk.POLICY_AUTOMATIC)
sw.set_property('vscrollbar-policy', gtk.POLICY_AUTOMATIC)
sw.set_property('border-width', 0)
sw.add(htmlview)
sw.show()
frame = gtk.Frame()
frame.set_shadow_type(gtk.SHADOW_IN)
frame.show()
frame.add(sw)
w = gtk.Window()
w.add(frame)
w.set_default_size(400, 300)
w.show_all()
w.connect('destroy', lambda w: gtk.main_quit())
gtk.main()
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