# -*- coding:utf-8 -*- ## src/htmltextview.py ## ## Copyright (C) 2005 Gustavo J. A. M. Carneiro ## Copyright (C) 2006 Santiago Gala ## Copyright (C) 2006-2007 Jean-Marie Traissard ## Copyright (C) 2006-2014 Yann Leboulanger ## Copyright (C) 2007 Nikos Kouremenos ## Copyright (C) 2008 Jonathan Schleifer ## Julien Pivotto ## Stephan Erb ## ## This file is part of Gajim. ## ## Gajim is free software; you can redistribute it and/or modify ## it under the terms of the GNU General Public License as published ## by the Free Software Foundation; version 3 only. ## ## Gajim 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 General Public License for more details. ## ## You should have received a copy of the GNU General Public License ## along with Gajim. If not, see . ## """ A Gtk.TextView-based renderer for XHTML-IM, as described in: http://xmpp.org/extensions/xep-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. """ from gi.repository import GObject from gi.repository import GLib from gi.repository import Pango from gi.repository import Gtk from gi.repository import Gdk from gi.repository import GdkPixbuf import xml.sax import xml.sax.handler import re from io import StringIO import urllib if __name__ == '__main__': from gajim.common import i18n import gajim.common.configpaths app.common.configpaths.gajimpaths.init(None) from gajim.common import app from gajim import gtkgui_helpers from gajim.gtkgui_helpers import get_icon_pixmap from gajim.common import helpers from gajim.common.exceptions import GajimGeneralException from gajim import dialogs from gajim import tooltips import logging log = logging.getLogger('gajim.htmlview') __all__ = ['HtmlTextView'] whitespace_rx = re.compile('\\s+') allwhitespace_rx = re.compile('^\\s*$') # pixels = points * display_resolution display_resolution = 0.3514598*(Gdk.Screen.height() / float(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'] # ========== # XEP-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 _parse_css_color(color): if color.startswith('rgb(') and color.endswith(')'): r, g, b = [int(c)*257 for c in color[4:-1].split(',')] return Gdk.Color(r, g, b) else: return Gdk.color_parse(color) def style_iter(style): return ([x.strip() for x in 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, conv_textview, startiter): xml.sax.handler.ContentHandler.__init__(self) self.textbuf = textview.get_buffer() self.textview = textview self.iter = startiter self.conv_textview = conv_textview 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) def _get_current_attributes(self): attrs = self.textview.get_default_attributes() self.iter.backward_char() attrs = (self.iter.get_attributes())[1] self.iter.forward_char() 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]) if val > 0: sign = 1 elif val < 0: sign = -1 else: sign = 0 # limits: 1% to 500% val = sign*max(1, min(abs(val), 500)) frac = val/100 if font_relative: attrs = self._get_current_attributes() if not attrs.font: font_size = self.get_font_size() 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 def get_val(): val = float(value[:-2]) if val > 0: sign = 1 elif val < 0: sign = -1 else: sign = 0 # validate length return sign*max(minl, min(abs(val*display_resolution), maxl)) if value.endswith('pt'): # points callback(get_val()*display_resolution, *args) elif value.endswith('em'): # ems, the width of the element's font attrs = self._get_current_attributes() if not attrs.font: font_size = self.get_font_size() callback(get_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() if not attrs.font: font_size = self.get_font_size() callback(get_val()*display_resolution*font_size, *args) elif value.endswith('px'): # pixels callback(get_val(), *args) else: try: # TODO: isn't "no units" interpreted as pixels? val = int(value) if val > 0: sign = 1 elif val < 0: sign = -1 else: sign = 0 # validate length val = sign*max(minl, min(abs(val), maxl)) callback(val, *args) except Exception: log.warning('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: # see http://developer.gnome.org/pango/stable/pango-Text-Attributes.html#PANGO-SCALE-XX-SMALL:CAPS # http://consciouslyusing.blogspot.ru/2012/01/heads-up-missing-pango-text-scale.html 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, 'xx-small': 0.5787037037037, 'x-small': 0.6444444444444, 'small': 0.8333333333333, 'medium': 1.0, 'large': 1.2, 'x-large': 1.4399999999999, 'xx-large': 1.728, } [value] except KeyError: pass else: attrs = self._get_current_attributes() if attrs.font_scale ==0: tag.set_property('scale', scale) return if value == 'smaller': tag.set_property('scale', 0.8333333333333) return if value == 'larger': tag.set_property('scale', 1.2) 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: log.warning('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: log.warning('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.Justification.LEFT, 'right': Gtk.Justification.RIGHT, 'center': Gtk.Justification.CENTER, 'justify': Gtk.Justification.FILL, } [value] except KeyError: log.warning('Invalid text-align:%s requested' % value) else: tag.set_property('justification', align) def _parse_style_text_decoration(self, tag, value): values = value.split(' ') if 'none' in values: tag.set_property('underline', Pango.Underline.NONE) tag.set_property('strikethrough', False) if 'underline' in values: tag.set_property('underline', Pango.Underline.SINGLE) else: tag.set_property('underline', Pango.Underline.NONE) if 'line-through' in values: tag.set_property('strikethrough', True) else: tag.set_property('strikethrough', False) if 'blink' in values: log.warning('text-decoration:blink not implemented') if 'overline' in values: log.warning('text-decoration:overline not implemented') def _parse_style_white_space(self, tag, value): if value == 'pre': tag.set_property('wrap_mode', Gtk.WrapMode.NONE) elif value == 'normal': tag.set_property('wrap_mode', Gtk.WrapMode.WORD) elif value == 'nowrap': tag.set_property('wrap_mode', Gtk.WrapMode.NONE) def __length_tag_cb(self, value, tag, propname): try: tag.set_property(propname, value) except Exception: log.warning( "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: log.warning('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.hyperlink_handler, 'url') tag.set_property('foreground', app.config.get('urlmsgcolor')) tag.set_property('underline', Pango.Underline.SINGLE) tag.is_anchor = True if title: tag.title = title return tag def _update_img(self, output, attrs, img_mark, tags): '''Callback function called after the function helpers.download_image. ''' mem, alt = output self._process_img(attrs, (mem, alt, img_mark, tags)) def _process_img(self, attrs, loaded=None): '''Process a img tag. ''' mem = '' update = False pixbuf = None replace_mark = None replace_tags = None try: if attrs['src'].startswith('data:image/'): # The "data" URL scheme http://tools.ietf.org/html/rfc2397 import base64 img = attrs['src'].split(',')[1] mem = base64.standard_b64decode(urllib.parse.unquote( img).encode('utf-8')) elif loaded is not None: (mem, alt, replace_mark, replace_tags) = loaded update = True else: if self.conv_textview: img_mark = self.textbuf.create_mark(None, self.iter, True) app.thread_interface(helpers.download_image, [ self.conv_textview.account, attrs], self._update_img, [attrs, img_mark, self._get_style_tags()]) alt = attrs.get('alt', '') if alt: alt += '\n' alt += _('Loading') pixbuf = get_icon_pixmap('gtk-no') if mem: # Caveat: GdkPixbuf is known not to be safe to load # images from network... this program is now potentially # hackable ;) loader = GdkPixbuf.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, GdkPixbuf.Pixbuf.scale_simple or similar. """ if isinstance(dims[0], float): dims[0] = int(dims[0]*w) elif not dims[0]: dims[0] = w if isinstance(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', '') working_iter = self.iter if replace_mark is not None: working_iter = self.textbuf.get_iter_at_mark(replace_mark) next_iter = working_iter.copy() next_iter.forward_char() self.textbuf.delete(working_iter, next_iter) self.textbuf.delete_mark(replace_mark) if pixbuf is not None: if replace_mark: tags = replace_tags else: tags = self._get_style_tags() if tags: tmpmark = self.textbuf.create_mark(None, working_iter, True) self.textbuf.insert_pixbuf(working_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, working_iter) self.textbuf.delete_mark(tmpmark) else: self._insert_text('[IMG: %s]' % alt, working_iter) except Exception as ex: log.error('Error loading image ' + str(ex)) pixbuf = None alt = attrs.get('alt', 'Broken image') try: loader.close() except Exception: 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: log.warning('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, working_iter=None): if working_iter == None: working_iter = self.iter if self.starting and text != '\n': self.starting = (text[-1] == '\n') tags = self._get_style_tags() if tags: self.textbuf.insert_with_tags(working_iter, text, *tags) else: self.textbuf.insert(working_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 == Gdk.EventType.BUTTON_PRESS: self.textview.emit('url-clicked', href, type_) return True return False def handle_specials(self, text): if self.conv_textview: self.iter = self.conv_textview.detect_and_print_special_text(text, self._get_style_tags(), iter_=self.iter) else: self._insert_text(text) def characters(self, content): if self.preserve: self.text += content return if allwhitespace_rx.match(content) is not None and self._starts_line(): 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 = attrs.get('title', None) 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 = chr(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: log.warning('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() self._insert_text('\u2015'*40) self._jump_line() 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 elif name in BLOCK_STRUCT: newLine = True else: log.warning("Unhandled element '%s'" % name) self._flush_text() if endPreserving: self.preserve = False if newLine: self._jump_line() self._end_span() def get_font_size(self): context = self.conv_textview.tv.get_style_context() font = context.get_font(Gtk.StateType.NORMAL) return font.get_size() / Pango.SCALE class HtmlTextView(Gtk.TextView): def __init__(self): Gtk.TextView.__init__(self) self.set_wrap_mode(Gtk.WrapMode.CHAR) self.set_editable(False) self._changed_cursor = False self.set_has_tooltip(True) self.connect('realize', self.on_html_text_view_realized) self.connect('unrealize', self.on_html_text_view_unrealized) self.connect('copy-clipboard', self.on_html_text_view_copy_clipboard) self.id_ = self.connect('button-release-event', self.on_left_mouse_button_release) self.get_buffer().eol_tag = self.get_buffer().create_tag('eol') self.config = app.config self.interface = app.interface # end big hack def connect_tooltip(self, func=None): self.connect('query-tooltip', func or self.__query_tooltip) def create_tags(self): buffer_ = self.get_buffer() self.tagURL = buffer_.create_tag('url') color = app.config.get('urlmsgcolor') self.tagURL.set_property('foreground', color) self.tagURL.set_property('underline', Pango.Underline.SINGLE) self.tagURL.connect('event', self.hyperlink_handler, 'url') self.tagMail = buffer_.create_tag('mail') self.tagMail.set_property('foreground', color) self.tagMail.set_property('underline', Pango.Underline.SINGLE) self.tagMail.connect('event', self.hyperlink_handler, 'mail') self.tagXMPP = buffer_.create_tag('xmpp') self.tagXMPP.set_property('foreground', color) self.tagXMPP.set_property('underline', Pango.Underline.SINGLE) self.tagXMPP.connect('event', self.hyperlink_handler, 'xmpp') self.tagSthAtSth = buffer_.create_tag('sth_at_sth') self.tagSthAtSth.set_property('foreground', color) self.tagSthAtSth.set_property('underline', Pango.Underline.SINGLE) self.tagSthAtSth.connect('event', self.hyperlink_handler, 'sth_at_sth') def __query_tooltip(self, widget, x_pos, y_pos, keyboard_mode, tooltip): window = widget.get_window(Gtk.TextWindowType.TEXT) x_pos, y_pos = self.window_to_buffer_coords( Gtk.TextWindowType.TEXT, x_pos, y_pos) if Gtk.MINOR_VERSION > 18: iter_ = self.get_iter_at_position(x_pos, y_pos)[1] else: iter_ = self.get_iter_at_position(x_pos, y_pos)[0] for tag in iter_.get_tags(): if getattr(tag, 'is_anchor', False): text = getattr(tag, 'title', False) if text: if len(text) > 50: text = text[:47] + '…' tooltip.set_text(text) if not self._changed_cursor: window.set_cursor(gtkgui_helpers.get_cursor('HAND2')) self._changed_cursor = True return True if self._changed_cursor: window.set_cursor(gtkgui_helpers.get_cursor('XTERM')) self._changed_cursor = False return False def on_open_link_activate(self, widget, kind, text): helpers.launch_browser_mailer(kind, text) def on_copy_link_activate(self, widget, text): clip = Gtk.Clipboard.get(Gdk.SELECTION_CLIPBOARD) clip.set_text(text, -1) # def on_start_chat_activate(self, widget, jid): # app.interface.new_chat_from_jid(self.account, jid) def on_join_group_chat_menuitem_activate(self, widget, room_jid): try: dialogs.JoinGroupchatWindow(room_jid=room_jid) except GajimGeneralException: pass def on_add_to_roster_activate(self, widget, jid): dialogs.AddNewContactWindow(self.account, jid) def make_link_menu(self, event, kind, text): from gajim.gtkgui_helpers import get_gtk_builder xml = get_gtk_builder('chat_context_menu.ui') menu = xml.get_object('chat_context_menu') childs = menu.get_children() if kind == 'url': childs[0].connect('activate', self.on_copy_link_activate, text) childs[1].connect('activate', self.on_open_link_activate, kind, text) childs[2].hide() # copy mail address childs[3].hide() # open mail composer childs[4].hide() # jid section separator childs[5].hide() # start chat childs[6].hide() # join group chat childs[7].hide() # add to roster else: # It's a mail or a JID # load muc icon join_group_chat_menuitem = xml.get_object('join_group_chat_menuitem') text = text.lower() if text.startswith('xmpp:'): text = text[5:] childs[2].connect('activate', self.on_copy_link_activate, text) childs[3].connect('activate', self.on_open_link_activate, kind, text) # childs[5].connect('activate', self.on_start_chat_activate, text) childs[6].connect('activate', self.on_join_group_chat_menuitem_activate, text) # if self.account and app.connections[self.account].\ # roster_supported: # childs[7].connect('activate', # self.on_add_to_roster_activate, text) # childs[7].show() # show add to roster menuitem # else: # childs[7].hide() # hide add to roster menuitem if kind == 'xmpp': childs[0].connect('activate', self.on_copy_link_activate, 'xmpp:' + text) childs[2].hide() # copy mail address childs[3].hide() # open mail composer elif kind == 'mail': childs[6].hide() # join group chat if kind != 'xmpp': childs[0].hide() # copy link location childs[1].hide() # open link in browser childs[4].hide() # jid section separator childs[5].hide() # start chat childs[7].hide() # add to roster menu.popup(None, None, None, event.button, event.time) def hyperlink_handler(self, texttag, widget, event, iter_, kind): if event.type == Gdk.EventType.BUTTON_PRESS: begin_iter = iter_.copy() # we get the begining of the tag while not begin_iter.begins_tag(texttag): begin_iter.backward_char() end_iter = iter_.copy() # we get the end of the tag while not end_iter.ends_tag(texttag): end_iter.forward_char() # Detect XHTML-IM link word = getattr(texttag, 'href', None) if word: if word.startswith('xmpp'): kind = 'xmpp' elif word.startswith('mailto:'): kind = 'mail' elif app.interface.sth_at_sth_dot_sth_re.match(word): # it's a JID or mail kind = 'sth_at_sth' else: word = self.textview.get_buffer().get_text(begin_iter, end_iter) if event.button == 3: # right click self.make_link_menu(event, kind, word) return True else: # we launch the correct application if kind == 'xmpp': word = word[5:] if '?' in word: (jid, action) = word.split('?') if action == 'join': self.on_join_group_chat_menuitem_activate(None, jid) else: self.on_start_chat_activate(None, jid) else: self.on_start_chat_activate(None, word) else: helpers.launch_browser_mailer(kind, word) def _hyperlink_handler(self, texttag, widget, event, iter_, kind): # self.hyperlink_handler can be overwritten, so call it when needed self.hyperlink_handler(texttag, widget, event, iter_, kind) def display_html(self, html, textview, conv_textview, iter_=None): buffer_ = self.get_buffer() if iter_: eob = iter_ else: 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(textview, conv_textview, eob)) parser.parse(StringIO(html)) # too much space after :) #if not eob.starts_line(): # buffer_.insert(eob, '\n') def on_html_text_view_copy_clipboard(self, unused_data): clipboard = self.get_clipboard(Gdk.SELECTION_CLIPBOARD) selected = self.get_selected_text() clipboard.set_text(selected, -1) GObject.signal_stop_emission_by_name(self, 'copy-clipboard') def on_html_text_view_realized(self, unused_data): self.get_buffer().remove_selection_clipboard(self.get_clipboard( Gdk.SELECTION_PRIMARY)) def on_html_text_view_unrealized(self, unused_data): self.get_buffer().add_selection_clipboard(self.get_clipboard( Gdk.SELECTION_PRIMARY)) def on_left_mouse_button_release(self, widget, event): if event.button != 1: return bounds = self.get_buffer().get_selection_bounds() if bounds: # textview can be hidden while we add a new line in it. if self.has_screen(): clipboard = self.get_clipboard(Gdk.SELECTION_PRIMARY) selected = self.get_selected_text() clipboard.set_text(selected, -1) def get_selected_text(self): bounds = self.get_buffer().get_selection_bounds() selection = '' if bounds: (search_iter, end) = bounds while (search_iter.compare(end)): character = search_iter.get_char() if character == '\ufffc': anchor = search_iter.get_child_anchor() if anchor: text = anchor.plaintext if text: selection+=text else: selection+=character else: selection+=character search_iter.forward_char() return selection change_cursor = None if __name__ == '__main__': from conversation_textview import ConversationTextview import gajim as gaj log = logging.getLogger() gaj.Interface() # create fake app.plugin_manager.gui_extension_point method for tests def gui_extension_point(*args): pass app.plugin_manager = gaj.Interface() app.plugin_manager.gui_extension_point = gui_extension_point htmlview = ConversationTextview(None) 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 w = htmlview.tv.get_window(Gtk.TextWindowType.TEXT) device = w.get_display().get_device_manager().get_client_pointer() pointer = w.get_device_position(device) x = pointer[1] y = pointer[2] tags = htmlview.tv.get_iter_at_location(x, y).get_tags() if change_cursor: w.set_cursor(gtkgui_helpers.get_cursor('XTERM')) change_cursor = None tag_table = htmlview.tv.get_buffer().get_tag_table() for tag in tags: try: if tag.is_anchor: w.set_cursor(gtkgui_helpers.get_cursor('HAND2')) change_cursor = tag elif tag == tag_table.lookup('focus-out-line'): over_line = True except Exception: 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 = GLib.timeout_add(500, # show_line_tooltip) # htmlview.tv.get_window(Gtk.TextWindowType.TEXT).set_cursor( # gtkgui_helpers.get_cursor('LEFT_PTR')) # change_cursor = tag htmlview.tv.connect('motion_notify_event', on_textview_motion_notify_event) def handler(texttag, widget, event, iter_, kind): if event.type == Gdk.EventType.BUTTON_PRESS: pass htmlview.tv.hyperlink_handler = htmlview.hyperlink_handler htmlview.print_real_text(None, xhtml='
' 'Hello
\n' '
\n' 'World\n' '
\n') htmlview.print_real_text(None, xhtml='
') htmlview.print_real_text(None, xhtml='''

a:b Google


''') htmlview.print_real_text(None, xhtml='''

O MG, I'm green with envy!

''') htmlview.print_real_text(None, xhtml='
') htmlview.print_real_text(None, xhtml=''' http://test.com/ testing links autolinkifying ''') htmlview.print_real_text(None, xhtml='
') htmlview.print_real_text(None, xhtml='''

As Emerson said in his essay Self-Reliance:

"A foolish consistency is the hobgoblin of little minds."

''') htmlview.print_real_text(None, xhtml='
') htmlview.print_real_text(None, xhtml='''

Hey, are you licensed to Jabber?

A License to Jabber

''') htmlview.print_real_text(None, xhtml='
') htmlview.print_real_text(None, xhtml='''
  • One
  • Two
  • Three

def fac(n):
def faciter(n,acc):
    if n==0: return acc
    return faciter(n-1, acc*n)
if n<0: raise ValueError('Must be non-negative')
return faciter(n,1)
''') htmlview.print_real_text(None, xhtml='
') htmlview.print_real_text(None, xhtml='''
  1. One
  2. Two is nested:
    • One
    • Two
    • Three
    • Four
  3. Three
''') htmlview.print_real_text(None, xhtml='
') htmlview.print_real_text(None, xhtml='''

xmpp link :

examples@example.org wrote:

this cite - bla bla bla, smile- :-) …

some text

#232/1

''') htmlview.print_real_text(None, xhtml='
') htmlview.print_real_text(None, xhtml='''
Larry ''') htmlview.tv.show() sw = Gtk.ScrolledWindow() sw.set_property('hscrollbar-policy', Gtk.PolicyType.AUTOMATIC) sw.set_property('vscrollbar-policy', Gtk.PolicyType.AUTOMATIC) sw.set_property('border-width', 0) sw.add(htmlview.tv) sw.show() frame = Gtk.Frame() frame.set_shadow_type(Gtk.ShadowType.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()