'''
reStructuredText renderer
=========================
.. versionadded:: 1.1.0
`reStructuredText <http://docutils.sourceforge.net/rst.html>`_ is an
easy-to-read, what-you-see-is-what-you-get plaintext markup syntax and parser
system.
.. note::
This widget requires the ``docutils`` package to run. Install it with
``pip`` or include it as one of your deployment requirements.
.. warning::
This widget is highly experimental. The styling and implementation should
not be considered stable until this warning has been removed.
Usage with Text
---------------
::
text = """
.. _top:
Hello world
===========
This is an **emphased text**, some ``interpreted text``.
And this is a reference to top_::
$ print("Hello world")
"""
document = RstDocument(text=text)
The rendering will output:
.. image:: images/rstdocument.png
Usage with Source
-----------------
You can also render a rst file using the :attr:`~RstDocument.source` property::
document = RstDocument(source='index.rst')
You can reference other documents using the role ``:doc:``. For example, in the
document ``index.rst`` you can write::
Go to my next document: :doc:`moreinfo.rst`
It will generate a link that, when clicked, opens the ``moreinfo.rst``
document.
'''
__all__ = ('RstDocument', )
import os
from os.path import dirname, join, exists, abspath
from kivy.clock import Clock
from kivy.properties import ObjectProperty, NumericProperty, \
DictProperty, ListProperty, StringProperty, \
BooleanProperty, OptionProperty, AliasProperty
from kivy.lang import Builder
from kivy.utils import get_hex_from_color, get_color_from_hex
from kivy.uix.widget import Widget
from kivy.uix.scrollview import ScrollView
from kivy.uix.gridlayout import GridLayout
from kivy.uix.label import Label
from kivy.uix.image import AsyncImage, Image
from kivy.uix.videoplayer import VideoPlayer
from kivy.uix.anchorlayout import AnchorLayout
from kivy.animation import Animation
from kivy.logger import Logger
from docutils.parsers import rst
from docutils.parsers.rst import roles
from docutils import nodes, frontend, utils
from docutils.parsers.rst import Directive, directives
from docutils.parsers.rst.roles import set_classes
#
# Handle some additional roles
#
if 'KIVY_DOC' not in os.environ:
class role_doc(nodes.Inline, nodes.TextElement):
pass
class role_video(nodes.General, nodes.TextElement):
pass
class VideoDirective(Directive):
has_content = False
required_arguments = 1
optional_arguments = 0
final_argument_whitespace = True
option_spec = {'width': directives.nonnegative_int,
'height': directives.nonnegative_int}
def run(self):
set_classes(self.options)
node = role_video(source=self.arguments[0], **self.options)
return [node]
generic_docroles = {
'doc': role_doc}
for rolename, nodeclass in generic_docroles.items():
generic = roles.GenericRole(rolename, nodeclass)
role = roles.CustomRole(rolename, generic, {'classes': [rolename]})
roles.register_local_role(rolename, role)
directives.register_directive('video', VideoDirective)
Builder.load_string('''
#:import parse_color kivy.parser.parse_color
<RstDocument>:
content: content
scatter: scatter
do_scroll_x: False
canvas.before:
Color:
rgba: parse_color(root.colors['background'])
Rectangle:
pos: self.pos
size: self.size
Scatter:
id: scatter
size_hint_y: None
height: content.minimum_height
width: root.width
scale: 1
do_translation: False, False
do_scale: False
do_rotation: False
GridLayout:
id: content
cols: 1
height: self.minimum_height
width: root.width
padding: 10
<RstTitle>:
markup: True
valign: 'top'
font_size:
sp(self.document.base_font_size - self.section * (
self.document.base_font_size / 31.0 * 2))
size_hint_y: None
height: self.texture_size[1] + dp(20)
text_size: self.width, None
bold: True
canvas:
Color:
rgba: parse_color(self.document.underline_color)
Rectangle:
pos: self.x, self.y + 5
size: self.width, 1
<RstParagraph>:
markup: True
valign: 'top'
size_hint_y: None
height: self.texture_size[1] + self.my
text_size: self.width - self.mx, None
font_size: sp(self.document.base_font_size / 2.0)
<RstTerm>:
size_hint: None, None
height: label.height
anchor_x: 'left'
Label:
id: label
text: root.text
markup: True
valign: 'top'
size_hint: None, None
size: self.texture_size[0] + dp(10), self.texture_size[1] + dp(10)
font_size: sp(root.document.base_font_size / 2.0)
<RstBlockQuote>:
cols: 2
content: content
size_hint_y: None
height: content.height
Widget:
size_hint_x: None
width: 20
GridLayout:
id: content
cols: 1
size_hint_y: None
height: self.minimum_height
<RstLiteralBlock>:
cols: 1
content: content
size_hint_y: None
height: content.texture_size[1] + dp(20)
canvas:
Color:
rgb: parse_color('#cccccc')
Rectangle:
pos: self.x - 1, self.y - 1
size: self.width + 2, self.height + 2
Color:
rgb: parse_color('#eeeeee')
Rectangle:
pos: self.pos
size: self.size
Label:
id: content
markup: True
valign: 'top'
text_size: self.width - 20, None
font_name: 'data/fonts/RobotoMono-Regular.ttf'
color: (0, 0, 0, 1)
<RstList>:
cols: 2
size_hint_y: None
height: self.minimum_height
<RstListItem>:
cols: 1
size_hint_y: None
height: self.minimum_height
<RstSystemMessage>:
cols: 1
size_hint_y: None
height: self.minimum_height
canvas:
Color:
rgba: 1, 0, 0, .3
Rectangle:
pos: self.pos
size: self.size
<RstWarning>:
content: content
cols: 1
padding: 20
size_hint_y: None
height: self.minimum_height
canvas:
Color:
rgba: 1, 0, 0, .5
Rectangle:
pos: self.x + 10, self.y + 10
size: self.width - 20, self.height - 20
GridLayout:
cols: 1
id: content
size_hint_y: None
height: self.minimum_height
<RstNote>:
content: content
cols: 1
padding: 20
size_hint_y: None
height: self.minimum_height
canvas:
Color:
rgba: 0, 1, 0, .5
Rectangle:
pos: self.x + 10, self.y + 10
size: self.width - 20, self.height - 20
GridLayout:
cols: 1
id: content
size_hint_y: None
height: self.minimum_height
<RstImage>:
size_hint: None, None
size: self.texture_size[0], self.texture_size[1] + dp(10)
<RstAsyncImage>:
size_hint: None, None
size: self.texture_size[0], self.texture_size[1] + dp(10)
<RstDefinitionList>:
cols: 1
size_hint_y: None
height: self.minimum_height
font_size: sp(self.document.base_font_size / 2.0)
<RstDefinition>:
cols: 2
size_hint_y: None
height: self.minimum_height
font_size: sp(self.document.base_font_size / 2.0)
<RstFieldList>:
cols: 2
size_hint_y: None
height: self.minimum_height
<RstFieldName>:
markup: True
valign: 'top'
size_hint: 0.2, 1
color: (0, 0, 0, 1)
bold: True
text_size: self.width - 10, self.height - 10
valign: 'top'
font_size: sp(self.document.base_font_size / 2.0)
<RstFieldBody>:
cols: 1
size_hint_y: None
height: self.minimum_height
<RstFootnote>:
cols: 2
size_hint_y: None
height: self.minimum_height
<RstFootName>:
markup: True
valign: 'top'
size_hint: 0.2, 1
color: (0, 0, 0, 1)
bold: True
text_size: self.width - 10, self.height - 10
valign: 'top'
font_size: sp(self.document.base_font_size / 2.0)
<RstTable>:
size_hint_y: None
height: self.minimum_height
<RstEntry>:
cols: 1
size_hint_y: None
height: self.minimum_height
canvas:
Color:
rgb: .2, .2, .2
Line:
points: [\
self.x,\
self.y,\
self.right,\
self.y,\
self.right,\
self.top,\
self.x,\
self.top,\
self.x,\
self.y]
<RstTransition>:
size_hint_y: None
height: 20
canvas:
Color:
rgb: .2, .2, .2
Line:
points: [self.x, self.center_y, self.right, self.center_y]
<RstListBullet>:
markup: True
valign: 'top'
size_hint_x: None
width: self.texture_size[0] + dp(10)
text_size: None, self.height - dp(10)
font_size: sp(self.document.base_font_size / 2.0)
<RstEmptySpace>:
size_hint: 0.01, 0.01
<RstDefinitionSpace>:
size_hint: None, 0.1
width: 50
font_size: sp(self.document.base_font_size / 2.0)
<RstVideoPlayer>:
options: {'fit_mode': 'contain'}
canvas.before:
Color:
rgba: (1, 1, 1, 1)
BorderImage:
source: 'atlas://data/images/defaulttheme/player-background'
pos: self.x - 25, self.y - 25
size: self.width + 50, self.height + 50
border: (25, 25, 25, 25)
''')
class RstVideoPlayer(VideoPlayer):
pass
[docs]class RstDocument(ScrollView):
'''Base widget used to store an Rst document. See module documentation for
more information.
'''
source = StringProperty(None)
'''Filename of the RST document.
:attr:`source` is a :class:`~kivy.properties.StringProperty` and
defaults to None.
'''
source_encoding = StringProperty('utf-8')
'''Encoding to be used for the :attr:`source` file.
:attr:`source_encoding` is a :class:`~kivy.properties.StringProperty` and
defaults to `utf-8`.
.. Note::
It is your responsibility to ensure that the value provided is a
valid codec supported by python.
'''
source_error = OptionProperty('strict',
options=('strict', 'ignore', 'replace',
'xmlcharrefreplace',
'backslashreplac'))
'''Error handling to be used while encoding the :attr:`source` file.
:attr:`source_error` is an :class:`~kivy.properties.OptionProperty` and
defaults to `strict`. Can be one of 'strict', 'ignore', 'replace',
'xmlcharrefreplace' or 'backslashreplac'.
'''
text = StringProperty(None)
'''RST markup text of the document.
:attr:`text` is a :class:`~kivy.properties.StringProperty` and defaults to
None.
'''
document_root = StringProperty(None)
'''Root path where :doc: will search for rst documents. If no path is
given, it will use the directory of the first loaded source file.
:attr:`document_root` is a :class:`~kivy.properties.StringProperty` and
defaults to None.
'''
base_font_size = NumericProperty(31)
'''Font size for the biggest title, 31 by default. All other font sizes are
derived from this.
.. versionadded:: 1.8.0
'''
show_errors = BooleanProperty(False)
'''Indicate whether RST parsers errors should be shown on the screen
or not.
:attr:`show_errors` is a :class:`~kivy.properties.BooleanProperty` and
defaults to False.
'''
def _get_bgc(self):
return get_color_from_hex(self.colors.background)
def _set_bgc(self, value):
self.colors.background = get_hex_from_color(value)[1:]
background_color = AliasProperty(_get_bgc, _set_bgc,
bind=('colors',),
cache=True)
'''Specifies the background_color to be used for the RstDocument.
.. versionadded:: 1.8.0
:attr:`background_color` is an :class:`~kivy.properties.AliasProperty`
for colors['background'].
'''
colors = DictProperty({
'background': 'e5e6e9ff',
'link': 'ce5c00ff',
'paragraph': '202020ff',
'title': '204a87ff',
'bullet': '000000ff'})
'''Dictionary of all the colors used in the RST rendering.
.. warning::
This dictionary is needs special handling. You also need to call
:meth:`RstDocument.render` if you change them after loading.
:attr:`colors` is a :class:`~kivy.properties.DictProperty`.
'''
title = StringProperty('')
'''Title of the current document.
:attr:`title` is a :class:`~kivy.properties.StringProperty` and defaults to
''. It is read-only.
'''
toctrees = DictProperty({})
'''Toctree of all loaded or preloaded documents. This dictionary is filled
when a rst document is explicitly loaded or where :meth:`preload` has been
called.
If the document has no filename, e.g. when the document is loaded from a
text file, the key will be ''.
:attr:`toctrees` is a :class:`~kivy.properties.DictProperty` and defaults
to {}.
'''
underline_color = StringProperty('204a9699')
'''underline color of the titles, expressed in html color notation
:attr:`underline_color` is a
:class:`~kivy.properties.StringProperty` and defaults to '204a9699'.
.. versionadded: 1.9.0
'''
# internals.
content = ObjectProperty(None)
scatter = ObjectProperty(None)
anchors_widgets = ListProperty([])
refs_assoc = DictProperty({})
def __init__(self, **kwargs):
self._trigger_load = Clock.create_trigger(self._load_from_text, -1)
self._parser = rst.Parser()
self._settings = frontend.OptionParser(
components=(rst.Parser, )).get_default_values()
super(RstDocument, self).__init__(**kwargs)
def on_source(self, instance, value):
if not value:
return
if self.document_root is None:
# set the documentation root to the directory name of the
# first tile
self.document_root = abspath(dirname(value))
self._load_from_source()
def on_text(self, instance, value):
self._trigger_load()
[docs] def render(self):
'''Force document rendering.
'''
self._load_from_text()
[docs] def resolve_path(self, filename):
'''Get the path for this filename. If the filename doesn't exist,
it returns the document_root + filename.
'''
if exists(filename):
return filename
return join(self.document_root, filename)
[docs] def preload(self, filename, encoding='utf-8', errors='strict'):
'''Preload a rst file to get its toctree and its title.
The result will be stored in :attr:`toctrees` with the ``filename`` as
key.
'''
with open(filename, 'rb') as fd:
text = fd.read().decode(encoding, errors)
# parse the source
document = utils.new_document('Document', self._settings)
self._parser.parse(text, document)
# fill the current document node
visitor = _ToctreeVisitor(document)
document.walkabout(visitor)
self.toctrees[filename] = visitor.toctree
return text
def _load_from_source(self):
filename = self.resolve_path(self.source)
self.text = self.preload(filename,
self.source_encoding,
self.source_error)
def _load_from_text(self, *largs):
try:
# clear the current widgets
self.content.clear_widgets()
self.anchors_widgets = []
self.refs_assoc = {}
# parse the source
document = utils.new_document('Document', self._settings)
self._parser.parse(self.text, document)
# fill the current document node
visitor = _Visitor(self, document)
document.walkabout(visitor)
self.title = visitor.title or 'No title'
except:
Logger.exception('Rst: error while loading text')
def on_ref_press(self, node, ref):
self.goto(ref)
[docs] def goto(self, ref, *largs):
'''Scroll to the reference. If it's not found, nothing will be done.
For this text::
.. _myref:
This is something I always wanted.
You can do::
from kivy.clock import Clock
from functools import partial
doc = RstDocument(...)
Clock.schedule_once(partial(doc.goto, 'myref'), 0.1)
.. note::
It is preferable to delay the call of the goto if you just loaded
the document because the layout might not be finished or the
size of the RstDocument has not yet been determined. In
either case, the calculation of the scrolling would be
wrong.
You can, however, do a direct call if the document is already
loaded.
.. versionadded:: 1.3.0
'''
# check if it's a file ?
if ref.endswith('.rst'):
# whether it's a valid or invalid file, let source deal with it
self.source = ref
return
# get the association
ref = self.refs_assoc.get(ref, ref)
# search into all the nodes containing anchors
ax = ay = None
for node in self.anchors_widgets:
if ref in node.anchors:
ax, ay = node.anchors[ref]
break
# not found, stop here
if ax is None:
return
# found, calculate the real coordinate
# get the anchor coordinate inside widget space
ax += node.x
ay = node.top - ay
# ay += node.y
# what's the current coordinate for us?
sx, sy = self.scatter.x, self.scatter.top
# ax, ay = self.scatter.to_parent(ax, ay)
ay -= self.height
dx, dy = self.convert_distance_to_scroll(0, ay)
dy = max(0, min(1, dy))
Animation(scroll_y=dy, d=.25, t='in_out_expo').start(self)
def add_anchors(self, node):
self.anchors_widgets.append(node)
class RstTitle(Label):
section = NumericProperty(0)
document = ObjectProperty(None)
class RstParagraph(Label):
mx = NumericProperty(10)
my = NumericProperty(10)
document = ObjectProperty(None)
class RstTerm(AnchorLayout):
text = StringProperty('')
document = ObjectProperty(None)
class RstBlockQuote(GridLayout):
content = ObjectProperty(None)
class RstLiteralBlock(GridLayout):
content = ObjectProperty(None)
class RstList(GridLayout):
pass
class RstListItem(GridLayout):
content = ObjectProperty(None)
class RstListBullet(Label):
document = ObjectProperty(None)
class RstSystemMessage(GridLayout):
pass
class RstWarning(GridLayout):
content = ObjectProperty(None)
class RstNote(GridLayout):
content = ObjectProperty(None)
class RstImage(Image):
pass
class RstAsyncImage(AsyncImage):
pass
class RstDefinitionList(GridLayout):
document = ObjectProperty(None)
class RstDefinition(GridLayout):
document = ObjectProperty(None)
class RstFieldList(GridLayout):
pass
class RstFieldName(Label):
document = ObjectProperty(None)
class RstFieldBody(GridLayout):
pass
class RstFootnote(GridLayout):
pass
class RstFootName(Label):
document = ObjectProperty(None)
class RstGridLayout(GridLayout):
pass
class RstTable(GridLayout):
pass
class RstEntry(GridLayout):
pass
class RstTransition(Widget):
pass
class RstEmptySpace(Widget):
pass
class RstDefinitionSpace(Widget):
document = ObjectProperty(None)
class _ToctreeVisitor(nodes.NodeVisitor):
def __init__(self, *largs):
self.toctree = self.current = []
self.queue = []
self.text = ''
nodes.NodeVisitor.__init__(self, *largs)
def push(self, tree):
self.queue.append(tree)
self.current = tree
def pop(self):
self.current = self.queue.pop()
def dispatch_visit(self, node):
cls = node.__class__
if cls is nodes.section:
section = {
'ids': node['ids'],
'names': node['names'],
'title': '',
'children': []}
if isinstance(self.current, dict):
self.current['children'].append(section)
else:
self.current.append(section)
self.push(section)
elif cls is nodes.title:
self.text = ''
elif cls is nodes.Text:
self.text += node
def dispatch_departure(self, node):
cls = node.__class__
if cls is nodes.section:
self.pop()
elif cls is nodes.title:
self.current['title'] = self.text
class _Visitor(nodes.NodeVisitor):
def __init__(self, root, *largs):
self.root = root
self.title = None
self.current_list = []
self.current = None
self.idx_list = None
self.text = ''
self.text_have_anchor = False
self.section = 0
self.do_strip_text = False
self.substitution = {}
# store refblock here while building
self.foot_refblock = None
# store order for autonum/sym footnotes+refs
self.footnotes = {
'autonum': 0,
'autosym': 0,
'autonum_ref': 0,
'autosym_ref': 0,
}
# last four default chars aren't in our Roboto font,
# those were replaced with something else
self.footlist = [
'\u002A', # asterisk
'\u2020', # dagger
'\u2021', # doubledagger
'\u00A7', # section
'\u00B6', # pilcrow
'\u0023', # number
'\u2206', # cap delta
'\u220F', # cap pi
'\u0470', # cap psi
'\u0466', # cap yus
]
nodes.NodeVisitor.__init__(self, *largs)
def push(self, widget):
self.current_list.append(self.current)
self.current = widget
def pop(self):
self.current = self.current_list.pop()
def brute_refs(self, node):
# get foot/cit refs manually because the output from
# docutils' parser doesn't contain any of these:
# node's refid, refname, backref, ... and/or are just ''/[]
def get_refs(condition, backref=False):
# backref=True is used in nodes.footnote
autonum = autosym = 0
_nodes = node.traverse(condition=condition, ascend=False)
for f in _nodes:
id = f['ids'][0]
auto = ''
if 'auto' in f:
auto = f['auto']
# auto is either 1(int) or '*'
if auto == 1:
autonum += 1
key = 'backref' + str(autonum) if backref else str(autonum)
self.root.refs_assoc[key] = id
elif auto == '*':
sym = self.footlist[
autosym % 10
] * (int(autosym / 10) + 1)
key = 'backref' + sym if backref else sym
self.root.refs_assoc[key] = id
autosym += 1
else:
if not backref:
key = f['names'][0]
if key:
self.root.refs_assoc[key] = id
continue
key = 'backref' + f['refname'][0]
if key in self.root.refs_assoc:
self.root.refs_assoc[key].append(id)
else:
self.root.refs_assoc[key] = [id, ]
# these are unique and need to go FIRST
get_refs(nodes.footnote, backref=False)
# autonum & autosym are unique
get_refs(nodes.footnote_reference, backref=True)
def dispatch_visit(self, node):
cls = node.__class__
if cls is nodes.document:
self.push(self.root.content)
self.brute_refs(node)
elif cls is nodes.comment:
return
elif cls is nodes.section:
self.section += 1
elif cls is nodes.substitution_definition:
name = node.attributes['names'][0]
self.substitution[name] = node.children[0]
elif cls is nodes.substitution_reference:
node = self.substitution[node.attributes['refname']]
# it can be e.g. image or something else too!
if isinstance(node, nodes.Text):
self.text += node
elif cls is nodes.footnote:
# .. [x] footnote
text = ''
foot = RstFootnote()
ids = node.attributes['ids']
self.current.add_widget(foot)
self.push(foot)
# check if its autonumbered
auto = ''
if 'auto' in node.attributes:
auto = node.attributes['auto']
# auto is either 1(int) or '*'
if auto == 1:
self.footnotes['autonum'] += 1
name = str(self.footnotes['autonum'])
node_id = node.attributes['ids'][0]
elif auto == '*':
autosym = self.footnotes['autosym']
name = self.footlist[
autosym % 10
] * (int(autosym / 10) + 1)
self.footnotes['autosym'] += 1
node_id = node.attributes['ids'][0]
else:
# can have multiple refs:
# [8] (1, 2) Footnote ref
name = node.attributes['names'][0]
node_id = node['ids'][0]
# we can have a footnote without any link or ref
# .. [1] Empty footnote
link = self.root.refs_assoc.get(name, '')
# handle no refs
ref = self.root.refs_assoc.get('backref' + name, '')
# colorize only with refs
colorized = self.colorize(name, 'link') if ref else name
# has no refs
if not ref:
text = '&bl;%s&br;' % (colorized)
# list of refs
elif ref and isinstance(ref, list):
ref_block = [
'[ref=%s][u]%s[/u][/ref]' % (r, i + 1)
for i, r in enumerate(ref)
]
# [1] ( 1, 2, ...) Footnote
self.foot_refblock = ''.join([
'[i]( ', ', '.join(ref_block), ' )[/i]'
])
text = '[anchor=%s]&bl;%s&br;' % (
node['ids'][0], colorized
)
# single ref
else:
text = '[anchor=%s][ref=%s]&bl;%s&br;[/ref]' % (
node['ids'][0], ref, colorized
)
name = RstFootName(
document=self.root,
text=text,
)
self.current.add_widget(name)
# give it anchor + event manually
self.root.add_anchors(name)
name.bind(on_ref_press=self.root.on_ref_press)
elif cls is nodes.footnote_reference:
self.text += '&bl;'
text = ''
name = ''
# check if its autonumbered
auto = ''
if 'auto' in node.attributes:
auto = node.attributes['auto']
# auto is either 1(int) or '*'
if auto == 1:
self.footnotes['autonum_ref'] += 1
name = str(self.footnotes['autonum_ref'])
node_id = node.attributes['ids'][0]
elif auto == '*':
autosym = self.footnotes['autosym_ref']
name = self.footlist[
autosym % 10
] * (int(autosym / 10) + 1)
self.footnotes['autosym_ref'] += 1
node_id = node.attributes['ids'][0]
else:
# can have multiple refs:
# [8] (1, 2) Footnote ref
name = node.children[0]
node_id = node['ids'][0]
text += name
refs = self.root.refs_assoc.get(name, '')
if not refs and auto in (1, '*'):
# parser should trigger it when checking
# for backlinks, but we don't have **any** refs
# to work with, so we have to trigger it manually
raise Exception(
'Too many autonumbered or autosymboled '
'footnote references!'
)
# has a single or no refs ( '' )
text = '[anchor=%s][ref=%s][color=%s]%s' % (
node_id, refs,
self.root.colors.get(
'link', self.root.colors.get('paragraph')
),
text
)
self.text += text
self.text_have_anchor = True
elif cls is nodes.title:
label = RstTitle(section=self.section, document=self.root)
self.current.add_widget(label)
self.push(label)
# assert self.text == ''
elif cls is nodes.Text:
# check if parent isn't a special directive
if hasattr(node, 'parent'):
if node.parent.tagname == 'substitution_definition':
# .. |ref| replace:: something
return
elif node.parent.tagname == 'substitution_reference':
# |ref|
return
elif node.parent.tagname == 'comment':
# .. COMMENT
return
elif node.parent.tagname == 'footnote_reference':
# .. [#]_
# .. [*]_
# rewrite it to handle autonum/sym here
# close tags with departure
return
if self.do_strip_text:
node = node.replace('\n', ' ')
node = node.replace(' ', ' ')
node = node.replace('\t', ' ')
node = node.replace(' ', ' ')
if node.startswith(' '):
node = ' ' + node.lstrip(' ')
if node.endswith(' '):
node = node.rstrip(' ') + ' '
if self.text.endswith(' ') and node.startswith(' '):
node = node[1:]
self.text += node
elif cls is nodes.paragraph:
self.do_strip_text = True
if isinstance(node.parent, nodes.footnote):
if self.foot_refblock:
self.text = self.foot_refblock + ' '
self.foot_refblock = None
# self.do_strip_text = False
label = RstParagraph(document=self.root)
if isinstance(self.current, RstEntry):
label.mx = 10
self.current.add_widget(label)
self.push(label)
elif cls is nodes.literal_block:
box = RstLiteralBlock()
self.current.add_widget(box)
self.push(box)
elif cls is nodes.emphasis:
self.text += '[i]'
elif cls is nodes.strong:
self.text += '[b]'
elif cls is nodes.literal:
self.text += '[font=fonts/RobotoMono-Regular.ttf]'
elif cls is nodes.block_quote:
box = RstBlockQuote()
self.current.add_widget(box)
self.push(box.content)
assert self.text == ''
elif cls is nodes.enumerated_list:
box = RstList()
self.current.add_widget(box)
self.push(box)
self.idx_list = 0
elif cls is nodes.bullet_list:
box = RstList()
self.current.add_widget(box)
self.push(box)
self.idx_list = None
elif cls is nodes.list_item:
bullet = '-'
if self.idx_list is not None:
self.idx_list += 1
bullet = '%d.' % self.idx_list
bullet = self.colorize(bullet, 'bullet')
item = RstListItem()
self.current.add_widget(RstListBullet(
text=bullet, document=self.root))
self.current.add_widget(item)
self.push(item)
elif cls is nodes.system_message:
label = RstSystemMessage()
if self.root.show_errors:
self.current.add_widget(label)
self.push(label)
elif cls is nodes.warning:
label = RstWarning()
self.current.add_widget(label)
self.push(label.content)
assert self.text == ''
elif cls is nodes.note:
label = RstNote()
self.current.add_widget(label)
self.push(label.content)
assert self.text == ''
elif cls is nodes.image:
# docutils parser breaks path with spaces
# e.g. "C:/my path" -> "C:/mypath"
uri = node['uri']
align = node.get('align', 'center')
image_size = [
node.get('width'),
node.get('height')
]
# use user's size if defined
def set_size(img, size):
img.size = [
size[0] or img.width,
size[1] or img.height
]
if uri.startswith('/') and self.root.document_root:
uri = join(self.root.document_root, uri[1:])
if uri.startswith('http://') or uri.startswith('https://'):
image = RstAsyncImage(source=uri)
image.bind(on_load=lambda *a: set_size(image, image_size))
else:
image = RstImage(source=uri)
set_size(image, image_size)
root = AnchorLayout(
size_hint_y=None,
anchor_x=align,
height=image.height
)
image.bind(height=root.setter('height'))
root.add_widget(image)
self.current.add_widget(root)
# TODO:
# .. _img: <url>
# .. |img| image:: <img>
# |img|_ <- needs refs and on_ref_press
elif cls is nodes.definition_list:
lst = RstDefinitionList(document=self.root)
self.current.add_widget(lst)
self.push(lst)
elif cls is nodes.term:
assert isinstance(self.current, RstDefinitionList)
term = RstTerm(document=self.root)
self.current.add_widget(term)
self.push(term)
elif cls is nodes.definition:
assert isinstance(self.current, RstDefinitionList)
definition = RstDefinition(document=self.root)
definition.add_widget(RstDefinitionSpace(document=self.root))
self.current.add_widget(definition)
self.push(definition)
elif cls is nodes.field_list:
fieldlist = RstFieldList()
self.current.add_widget(fieldlist)
self.push(fieldlist)
elif cls is nodes.field_name:
name = RstFieldName(document=self.root)
self.current.add_widget(name)
self.push(name)
elif cls is nodes.field_body:
body = RstFieldBody()
self.current.add_widget(body)
self.push(body)
elif cls is nodes.table:
table = RstTable(cols=0)
self.current.add_widget(table)
self.push(table)
elif cls is nodes.colspec:
self.current.cols += 1
elif cls is nodes.entry:
entry = RstEntry()
self.current.add_widget(entry)
self.push(entry)
elif cls is nodes.transition:
self.current.add_widget(RstTransition())
elif cls is nodes.reference:
name = node.get('name', node.get('refuri'))
self.text += '[ref=%s][color=%s]' % (
name, self.root.colors.get(
'link', self.root.colors.get('paragraph')))
if 'refname' in node and 'name' in node:
self.root.refs_assoc[node['name']] = node['refname']
elif cls is nodes.target:
name = None
if 'ids' in node:
name = node['ids'][0]
elif 'names' in node:
name = node['names'][0]
self.text += '[anchor=%s]' % name
self.text_have_anchor = True
elif cls is role_doc:
self.doc_index = len(self.text)
elif cls is role_video:
pass
def dispatch_departure(self, node):
cls = node.__class__
if cls is nodes.document:
self.pop()
elif cls is nodes.section:
self.section -= 1
elif cls is nodes.title:
assert isinstance(self.current, RstTitle)
if not self.title:
self.title = self.text
self.set_text(self.current, 'title')
self.pop()
elif cls is nodes.Text:
pass
elif cls is nodes.paragraph:
self.do_strip_text = False
assert isinstance(self.current, RstParagraph)
self.set_text(self.current, 'paragraph')
self.pop()
elif cls is nodes.literal_block:
assert isinstance(self.current, RstLiteralBlock)
self.set_text(self.current.content, 'literal_block')
self.pop()
elif cls is nodes.emphasis:
self.text += '[/i]'
elif cls is nodes.strong:
self.text += '[/b]'
elif cls is nodes.literal:
self.text += '[/font]'
elif cls is nodes.block_quote:
self.pop()
elif cls is nodes.enumerated_list:
self.idx_list = None
self.pop()
elif cls is nodes.bullet_list:
self.pop()
elif cls is nodes.list_item:
self.pop()
elif cls is nodes.system_message:
self.pop()
elif cls is nodes.warning:
self.pop()
elif cls is nodes.note:
self.pop()
elif cls is nodes.definition_list:
self.pop()
elif cls is nodes.term:
assert isinstance(self.current, RstTerm)
self.set_text(self.current, 'term')
self.pop()
elif cls is nodes.definition:
self.pop()
elif cls is nodes.field_list:
self.pop()
elif cls is nodes.field_name:
assert isinstance(self.current, RstFieldName)
self.set_text(self.current, 'field_name')
self.pop()
elif cls is nodes.field_body:
self.pop()
elif cls is nodes.table:
self.pop()
elif cls is nodes.colspec:
pass
elif cls is nodes.entry:
self.pop()
elif cls is nodes.reference:
self.text += '[/color][/ref]'
elif cls is nodes.footnote:
self.pop()
self.set_text(self.current, 'link')
elif cls is nodes.footnote_reference:
# close opened footnote [x]
# self.text += '[/ref]'
# self.set_text(self.current, 'link')
self.text += '[/color][/ref]'
# self.text += '[/color][/ref]'
self.text += '&br;'
elif cls is role_doc:
docname = self.text[self.doc_index:]
rst_docname = docname
if rst_docname.endswith('.rst'):
docname = docname[:-4]
else:
rst_docname += '.rst'
# try to preload it
filename = self.root.resolve_path(rst_docname)
self.root.preload(filename)
# if exist, use the title of the first section found in the
# document
title = docname
if filename in self.root.toctrees:
toctree = self.root.toctrees[filename]
if len(toctree):
title = toctree[0]['title']
# replace the text with a good reference
text = '[ref=%s]%s[/ref]' % (
rst_docname,
self.colorize(title, 'link'))
self.text = self.text[:self.doc_index] + text
elif cls is role_video:
width = node['width'] if 'width' in node.attlist() else 400
height = node['height'] if 'height' in node.attlist() else 300
uri = node['source']
if uri.startswith('/') and self.root.document_root:
uri = join(self.root.document_root, uri[1:])
video = RstVideoPlayer(
source=uri,
size_hint=(None, None),
size=(width, height))
anchor = AnchorLayout(size_hint_y=None, height=height + 20)
anchor.add_widget(video)
self.current.add_widget(anchor)
def set_text(self, node, parent):
text = self.text
if parent == 'term' or parent == 'field_name':
text = '[b]%s[/b]' % text
# search anchors
node.text = self.colorize(text, parent)
node.bind(on_ref_press=self.root.on_ref_press)
if self.text_have_anchor:
self.root.add_anchors(node)
self.text = ''
self.text_have_anchor = False
def colorize(self, text, name):
return '[color=%s]%s[/color]' % (
self.root.colors.get(name, self.root.colors['paragraph']),
text)
if __name__ == '__main__':
from kivy.base import runTouchApp
import sys
runTouchApp(RstDocument(source=sys.argv[1]))
