Quick search

Table Of Contents

Source code for kivy.uix.label

'''Label
=====

.. image:: images/label.png
    :align: right

The :class:`Label` widget is for rendering text. It supports ascii and unicode
strings::

    # hello world text
    l = Label(text='Hello world')

    # unicode text; can only display glyphs that are available in the font
    l = Label(text=u'Hello world ' + unichr(2764))

    # multiline text
    l = Label(text='Multi\\nLine')

    # size
    l = Label(text='Hello world', font_size='20sp')

.. _kivy-uix-label-sizing-and-text-content:

Sizing and text content
---------------------------

By default, the size of :class:`Label` is not affected by :attr:`~Label.text`
content and the text is not affected by the size. In order to control
sizing, you must specify :attr:`~Label.text_size` to constrain the text
and/or bind :attr:`~Label.size` to :attr:`~Label.texture_size` to grow with
the text.

For example, this label's size will be set to the text content
(plus :attr:`~Label.padding`):

.. code-block:: kv

    Label:
        size: self.texture_size

This label's text will wrap at the specified width and be clipped to the
height:

.. code-block:: kv

    Label:
        text_size: cm(6), cm(4)

.. note:: The :attr:`~Label.shorten` and :attr:`~Label.max_lines` attributes
 control how overflowing text behaves.

Combine these concepts to create a Label that can grow vertically but wraps the
text at a certain width:

.. code-block:: kv

    Label:
        text_size: root.width, None
        size: self.texture_size

Text alignment and wrapping
---------------------------

The :class:`Label` has :attr:`~Label.halign` and :attr:`~Label.valign`
properties to control the alignment of its text. However, by default the text
image (:attr:`~Label.texture`) is only just large enough to contain the
characters and is positioned in the center of the Label. The valign property
will have no effect and halign will only have an effect if your text has
newlines; a single line of text will appear to be centered even though halign
is set to left (by default).

In order for the alignment properties to take effect, set the
:attr:`~Label.text_size`, which specifies the size of the bounding box within
which text is aligned. For instance, the following code binds this size to the
size of the Label, so text will be aligned within the widget bounds. This
will also automatically wrap the text of the Label to remain within this area.

.. code-block:: kv

    Label:
        text_size: self.size
        halign: 'right'
        valign: 'middle'

Markup text
-----------

.. versionadded:: 1.1.0

You can change the style of the text using :doc:`api-kivy.core.text.markup`.
The syntax is similar to the bbcode syntax but only the inline styling is
allowed::

    # hello world with world in bold
    l = Label(text='Hello [b]World[/b]', markup=True)

    # hello in red, world in blue
    l = Label(text='[color=ff3333]Hello[/color][color=3333ff]World[/color]',
        markup = True)

If you need to escape the markup from the current text, use
:func:`kivy.utils.escape_markup`::

    text = 'This is an important message [1]'
    l = Label(text='[b]' + escape_markup(text) + '[/b]', markup=True)

The following tags are available:

``[b][/b]``
    Activate bold text
``[i][/i]``
    Activate italic text
``[u][/u]``
    Underlined text
``[s][/s]``
    Strikethrough text
``[font=<str>][/font]``
    Change the font
``[size=<integer>][/size]``
    Change the font size
``[color=#<color>][/color]``
    Change the text color
``[ref=<str>][/ref]``
    Add an interactive zone. The reference + bounding box inside the
    reference will be available in :attr:`Label.refs`
``[anchor=<str>]``
    Put an anchor in the text. You can get the position of your anchor within
    the text with :attr:`Label.anchors`
``[sub][/sub]``
    Display the text at a subscript position relative to the text before it.
``[sup][/sup]``
    Display the text at a superscript position relative to the text before it.

If you want to render the markup text with a [ or ] or & character, you need to
escape them. We created a simple syntax::

    [   -> &bl;
    ]   -> &br;
    &   -> &amp;

Then you can write::

    "[size=24]Hello &bl;World&bt;[/size]"

Interactive zone in text
------------------------

.. versionadded:: 1.1.0

You can now have definable "links" using text markup. The idea is to be able
to detect when the user clicks on part of the text and to react.
The tag ``[ref=xxx]`` is used for that.

In this example, we are creating a reference on the word "World". When
this word is clicked, the function ``print_it`` will be called with the
name of the reference::

    def print_it(instance, value):
        print('User clicked on', value)
    widget = Label(text='Hello [ref=world]World[/ref]', markup=True)
    widget.bind(on_ref_press=print_it)

For prettier rendering, you could add a color for the reference. Replace the
``text=`` in the previous example with::

    'Hello [ref=world][color=0000ff]World[/color][/ref]'

Catering for Unicode languages
------------------------------

The font kivy uses does not contain all the characters required for displaying
all languages. When you use the built-in widgets, this results in a block being
drawn where you expect a character.

If you want to display such characters, you can chose a font that supports them
and deploy it universally via kv:

.. code-block:: kv

    <Label>:
        font_name: '/<path>/<to>/<font>'

Note that this needs to be done before your widgets are loaded as kv rules are
only applied at load time.

Usage example
-------------

The following example marks the anchors and references contained in a label::

    from kivy.app import App
    from kivy.uix.label import Label
    from kivy.clock import Clock
    from kivy.graphics import Color, Rectangle


    class TestApp(App):

        @staticmethod
        def get_x(label, ref_x):
            """ Return the x value of the ref/anchor relative to the canvas """
            return label.center_x - label.texture_size[0] * 0.5 + ref_x

        @staticmethod
        def get_y(label, ref_y):
            """ Return the y value of the ref/anchor relative to the canvas """
            # Note the inversion of direction, as y values start at the top of
            # the texture and increase downwards
            return label.center_y + label.texture_size[1] * 0.5 - ref_y

        def show_marks(self, label):

            # Indicate the position of the anchors with a red top marker
            for name, anc in label.anchors.items():
                with label.canvas:
                    Color(1, 0, 0)
                    Rectangle(pos=(self.get_x(label, anc[0]),
                                   self.get_y(label, anc[1])),
                              size=(3, 3))

            # Draw a green surround around the refs. Note the sizes y inversion
            for name, boxes in label.refs.items():
                for box in boxes:
                    with label.canvas:
                        Color(0, 1, 0, 0.25)
                        Rectangle(pos=(self.get_x(label, box[0]),
                                       self.get_y(label, box[1])),
                                  size=(box[2] - box[0],
                                        box[1] - box[3]))

        def build(self):
            label = Label(
                text='[anchor=a]a\\nChars [anchor=b]b\\n[ref=myref]ref[/ref]',
                markup=True)
            Clock.schedule_once(lambda dt: self.show_marks(label), 1)
            return label

    TestApp().run()

'''

__all__ = ('Label', )

from kivy.clock import Clock
from kivy.uix.widget import Widget
from kivy.core.text import Label as CoreLabel, DEFAULT_FONT
from kivy.core.text.markup import MarkupLabel as CoreMarkupLabel
from kivy.properties import StringProperty, OptionProperty, \
    NumericProperty, BooleanProperty, ReferenceListProperty, \
    ListProperty, ObjectProperty, DictProperty
from kivy.utils import get_hex_from_color


[docs]class Label(Widget): '''Label class, see module documentation for more information. :Events: `on_ref_press` Fired when the user clicks on a word referenced with a ``[ref]`` tag in a text markup. ''' __events__ = ['on_ref_press'] _font_properties = ('text', 'font_size', 'font_name', 'bold', 'italic', 'underline', 'strikethrough', 'color', 'disabled_color', 'halign', 'valign', 'padding_x', 'padding_y', 'outline_width', 'disabled_outline_color', 'outline_color', 'text_size', 'shorten', 'mipmap', 'line_height', 'max_lines', 'strip', 'shorten_from', 'split_str', 'ellipsis_options', 'unicode_errors', 'markup', 'font_hinting', 'font_kerning', 'font_blended') def __init__(self, **kwargs): self._trigger_texture = Clock.create_trigger(self.texture_update, -1) super(Label, self).__init__(**kwargs) # bind all the property for recreating the texture d = Label._font_properties fbind = self.fbind update = self._trigger_texture_update fbind('disabled', update, 'disabled') for x in d: fbind(x, update, x) self._label = None self._create_label() # force the texture creation self._trigger_texture() def _create_label(self): # create the core label class according to markup value if self._label is not None: cls = self._label.__class__ else: cls = None markup = self.markup if (markup and cls is not CoreMarkupLabel) or \ (not markup and cls is not CoreLabel): # markup have change, we need to change our rendering method. d = Label._font_properties dkw = dict(list(zip(d, [getattr(self, x) for x in d]))) if markup: self._label = CoreMarkupLabel(**dkw) else: self._label = CoreLabel(**dkw) def _trigger_texture_update(self, name=None, source=None, value=None): # check if the label core class need to be switch to a new one if name == 'markup': self._create_label() if source: if name == 'text': self._label.text = value elif name == 'text_size': self._label.usersize = value elif name == 'font_size': self._label.options[name] = value elif name == 'disabled_color' and self.disabled: self._label.options['color'] = value elif name == 'disabled_outline_color' and self.disabled: self._label.options['outline_color'] = value elif name == 'disabled': self._label.options['color'] = self.disabled_color if value \ else self.color self._label.options['outline_color'] = ( self.disabled_outline_color if value else self.outline_color) else: self._label.options[name] = value self._trigger_texture()
[docs] def texture_update(self, *largs): '''Force texture recreation with the current Label properties. After this function call, the :attr:`texture` and :attr:`texture_size` will be updated in this order. ''' mrkup = self._label.__class__ is CoreMarkupLabel self.texture = None if (not self._label.text or (self.halign == 'justify' or self.strip) and not self._label.text.strip()): self.texture_size = (0, 0) self.is_shortened = False if mrkup: self.refs, self._label._refs = {}, {} self.anchors, self._label._anchors = {}, {} else: if mrkup: text = self.text # we must strip here, otherwise, if the last line is empty, # markup will retain the last empty line since it only strips # line by line within markup if self.halign == 'justify' or self.strip: text = text.strip() self._label.text = ''.join(('[color=', get_hex_from_color( self.disabled_color if self.disabled else self.color), ']', text, '[/color]')) self._label.refresh() # force the rendering to get the references if self._label.texture: self._label.texture.bind() self.refs = self._label.refs self.anchors = self._label.anchors else: self._label.refresh() texture = self._label.texture if texture is not None: self.texture = self._label.texture self.texture_size = list(self.texture.size) self.is_shortened = self._label.is_shortened
def on_touch_down(self, touch): if super(Label, self).on_touch_down(touch): return True if not len(self.refs): return False tx, ty = touch.pos tx -= self.center_x - self.texture_size[0] / 2. ty -= self.center_y - self.texture_size[1] / 2. ty = self.texture_size[1] - ty for uid, zones in self.refs.items(): for zone in zones: x, y, w, h = zone if x <= tx <= w and y <= ty <= h: self.dispatch('on_ref_press', uid) return True return False def on_ref_press(self, ref): pass # # Properties # disabled_color = ListProperty([1, 1, 1, .3]) '''The color of the text when the widget is disabled, in the (r, g, b, a) format. .. versionadded:: 1.8.0 :attr:`disabled_color` is a :class:`~kivy.properties.ListProperty` and defaults to [1, 1, 1, .3]. ''' text = StringProperty('') '''Text of the label. Creation of a simple hello world:: widget = Label(text='Hello world') If you want to create the widget with an unicode string, use:: widget = Label(text=u'My unicode string') :attr:`text` is a :class:`~kivy.properties.StringProperty` and defaults to ''. ''' text_size = ListProperty([None, None]) '''By default, the label is not constrained to any bounding box. You can set the size constraint of the label with this property. The text will autoflow into the constraints. So although the font size will not be reduced, the text will be arranged to fit into the box as best as possible, with any text still outside the box clipped. This sets and clips :attr:`texture_size` to text_size if not None. .. versionadded:: 1.0.4 For example, whatever your current widget size is, if you want the label to be created in a box with width=200 and unlimited height:: Label(text='Very big big line', text_size=(200, None)) .. note:: This text_size property is the same as the :attr:`~kivy.core.text.Label.usersize` property in the :class:`~kivy.core.text.Label` class. (It is named size= in the constructor.) :attr:`text_size` is a :class:`~kivy.properties.ListProperty` and defaults to (None, None), meaning no size restriction by default. ''' font_name = StringProperty(DEFAULT_FONT) '''Filename of the font to use. The path can be absolute or relative. Relative paths are resolved by the :func:`~kivy.resources.resource_find` function. .. warning:: Depending of your text provider, the font file can be ignored. However, you can mostly use this without problems. If the font used lacks the glyphs for the particular language/symbols you are using, you will see '[]' blank box characters instead of the actual glyphs. The solution is to use a font that has the glyphs you need to display. For example, to display |unicodechar|, use a font such as freesans.ttf that has the glyph. .. |unicodechar| image:: images/unicode-char.png :attr:`font_name` is a :class:`~kivy.properties.StringProperty` and defaults to 'Roboto'. This value is taken from :class:`~kivy.config.Config`. ''' font_size = NumericProperty('15sp') '''Font size of the text, in pixels. :attr:`font_size` is a :class:`~kivy.properties.NumericProperty` and defaults to 15sp. ''' line_height = NumericProperty(1.0) '''Line Height for the text. e.g. line_height = 2 will cause the spacing between lines to be twice the size. :attr:`line_height` is a :class:`~kivy.properties.NumericProperty` and defaults to 1.0. .. versionadded:: 1.5.0 ''' bold = BooleanProperty(False) '''Indicates use of the bold version of your font. .. note:: Depending of your font, the bold attribute may have no impact on your text rendering. :attr:`bold` is a :class:`~kivy.properties.BooleanProperty` and defaults to False. ''' italic = BooleanProperty(False) '''Indicates use of the italic version of your font. .. note:: Depending of your font, the italic attribute may have no impact on your text rendering. :attr:`italic` is a :class:`~kivy.properties.BooleanProperty` and defaults to False. ''' underline = BooleanProperty(False) '''Adds an underline to the text. .. note:: This feature requires the SDL2 text provider. .. versionadded:: 1.10.0 :attr:`underline` is a :class:`~kivy.properties.BooleanProperty` and defaults to False. ''' strikethrough = BooleanProperty(False) '''Adds a strikethrough line to the text. .. note:: This feature requires the SDL2 text provider. .. versionadded:: 1.10.0 :attr:`strikethrough` is a :class:`~kivy.properties.BooleanProperty` and defaults to False. ''' padding_x = NumericProperty(0) '''Horizontal padding of the text inside the widget box. :attr:`padding_x` is a :class:`~kivy.properties.NumericProperty` and defaults to 0. .. versionchanged:: 1.9.0 `padding_x` has been fixed to work as expected. In the past, the text was padded by the negative of its values. ''' padding_y = NumericProperty(0) '''Vertical padding of the text inside the widget box. :attr:`padding_y` is a :class:`~kivy.properties.NumericProperty` and defaults to 0. .. versionchanged:: 1.9.0 `padding_y` has been fixed to work as expected. In the past, the text was padded by the negative of its values. ''' padding = ReferenceListProperty(padding_x, padding_y) '''Padding of the text in the format (padding_x, padding_y) :attr:`padding` is a :class:`~kivy.properties.ReferenceListProperty` of (:attr:`padding_x`, :attr:`padding_y`) properties. ''' halign = OptionProperty('left', options=['left', 'center', 'right', 'justify']) '''Horizontal alignment of the text. :attr:`halign` is an :class:`~kivy.properties.OptionProperty` and defaults to 'left'. Available options are : left, center, right and justify. .. warning:: This doesn't change the position of the text texture of the Label (centered), only the position of the text in this texture. You probably want to bind the size of the Label to the :attr:`texture_size` or set a :attr:`text_size`. .. versionchanged:: 1.6.0 A new option was added to :attr:`halign`, namely `justify`. ''' valign = OptionProperty('bottom', options=['bottom', 'middle', 'center', 'top']) '''Vertical alignment of the text. :attr:`valign` is an :class:`~kivy.properties.OptionProperty` and defaults to 'bottom'. Available options are : `'bottom'`, `'middle'` (or `'center'`) and `'top'`. .. versionchanged:: 1.10.0 The `'center'` option has been added as an alias of `'middle'`. .. warning:: This doesn't change the position of the text texture of the Label (centered), only the position of the text within this texture. You probably want to bind the size of the Label to the :attr:`texture_size` or set a :attr:`text_size` to change this behavior. ''' color = ListProperty([1, 1, 1, 1]) '''Text color, in the format (r, g, b, a). :attr:`color` is a :class:`~kivy.properties.ListProperty` and defaults to [1, 1, 1, 1]. ''' outline_width = NumericProperty(None, allownone=True) '''Width in pixels for the outline around the text. No outline will be rendered if the value is None. .. note:: This feature requires the SDL2 text provider. .. versionadded:: 1.10.0 :attr:`outline_width` is a :class:`~kivy.properties.NumericProperty` and defaults to None. ''' outline_color = ListProperty([0, 0, 0]) '''The color of the text outline, in the (r, g, b) format. .. note:: This feature requires the SDL2 text provider. .. versionadded:: 1.10.0 :attr:`outline_color` is a :class:`~kivy.properties.ListProperty` and defaults to [0, 0, 0]. ''' disabled_outline_color = ListProperty([0, 0, 0]) '''The color of the text outline when the widget is disabled, in the (r, g, b) format. .. note:: This feature requires the SDL2 text provider. .. versionadded:: 1.10.0 :attr:`disabled_outline_color` is a :class:`~kivy.properties.ListProperty` and defaults to [0, 0, 0]. ''' texture = ObjectProperty(None, allownone=True) '''Texture object of the text. The text is rendered automatically when a property changes. The OpenGL texture created in this operation is stored in this property. You can use this :attr:`texture` for any graphics elements. Depending on the texture creation, the value will be a :class:`~kivy.graphics.texture.Texture` or :class:`~kivy.graphics.texture.TextureRegion` object. .. warning:: The :attr:`texture` update is scheduled for the next frame. If you need the texture immediately after changing a property, you have to call the :meth:`texture_update` method before accessing :attr:`texture`:: l = Label(text='Hello world') # l.texture is good l.font_size = '50sp' # l.texture is not updated yet l.texture_update() # l.texture is good now. :attr:`texture` is an :class:`~kivy.properties.ObjectProperty` and defaults to None. ''' texture_size = ListProperty([0, 0]) '''Texture size of the text. The size is determined by the font size and text. If :attr:`text_size` is [None, None], the texture will be the size required to fit the text, otherwise it's clipped to fit :attr:`text_size`. When :attr:`text_size` is [None, None], one can bind to texture_size and rescale it proportionally to fit the size of the label in order to make the text fit maximally in the label. .. warning:: The :attr:`texture_size` is set after the :attr:`texture` property. If you listen for changes to :attr:`texture`, :attr:`texture_size` will not be up-to-date in your callback. Bind to :attr:`texture_size` instead. ''' mipmap = BooleanProperty(False) '''Indicates whether OpenGL mipmapping is applied to the texture or not. Read :ref:`mipmap` for more information. .. versionadded:: 1.0.7 :attr:`mipmap` is a :class:`~kivy.properties.BooleanProperty` and defaults to False. ''' shorten = BooleanProperty(False) ''' Indicates whether the label should attempt to shorten its textual contents as much as possible if a :attr:`text_size` is given. Setting this to True without an appropriately set :attr:`text_size` will lead to unexpected results. :attr:`shorten_from` and :attr:`split_str` control the direction from which the :attr:`text` is split, as well as where in the :attr:`text` we are allowed to split. :attr:`shorten` is a :class:`~kivy.properties.BooleanProperty` and defaults to False. ''' shorten_from = OptionProperty('center', options=['left', 'center', 'right']) '''The side from which we should shorten the text from, can be left, right, or center. For example, if left, the ellipsis will appear towards the left side and we will display as much text starting from the right as possible. Similar to :attr:`shorten`, this option only applies when :attr:`text_size` [0] is not None, In this case, the string is shortened to fit within the specified width. .. versionadded:: 1.9.0 :attr:`shorten_from` is a :class:`~kivy.properties.OptionProperty` and defaults to `center`. ''' is_shortened = BooleanProperty(False) '''This property indicates if :attr:`text` was rendered with or without shortening when :attr:`shorten` is True. .. versionadded:: 1.10.0 :attr:`is_shortened` is a :class:`~kivy.properties.BooleanProperty` and defaults to False. ''' split_str = StringProperty('') '''The string used to split the :attr:`text` while shortening the string when :attr:`shorten` is True. For example, if it's a space, the string will be broken into words and as many whole words that can fit into a single line will be displayed. If :attr:`split_str` is the empty string, `''`, we split on every character fitting as much text as possible into the line. .. versionadded:: 1.9.0 :attr:`split_str` is a :class:`~kivy.properties.StringProperty` and defaults to `''` (the empty string). ''' ellipsis_options = DictProperty({}) '''Font options for the ellipsis string('...') used to split the text. Accepts a dict as option name with the value. Only applied when :attr:`markup` is true and text is shortened. All font options which work for :class:`Label` will work for :attr:`ellipsis_options`. Defaults for the options not specified are taken from the surronding text. .. code-block:: kv Label: text: 'Some very long line which will be cut' markup: True shorten: True ellipsis_options: {'color':(1,0.5,0.5,1),'underline':True} .. versionadded:: 2.0.0 :attr:`ellipsis_options` is a :class:`~kivy.properties.DictProperty` and defaults to `{}` (the empty dict). ''' unicode_errors = OptionProperty( 'replace', options=('strict', 'replace', 'ignore')) '''How to handle unicode decode errors. Can be `'strict'`, `'replace'` or `'ignore'`. .. versionadded:: 1.9.0 :attr:`unicode_errors` is an :class:`~kivy.properties.OptionProperty` and defaults to `'replace'`. ''' markup = BooleanProperty(False) ''' .. versionadded:: 1.1.0 If True, the text will be rendered using the :class:`~kivy.core.text.markup.MarkupLabel`: you can change the style of the text using tags. Check the :doc:`api-kivy.core.text.markup` documentation for more information. :attr:`markup` is a :class:`~kivy.properties.BooleanProperty` and defaults to False. ''' refs = DictProperty({}) ''' .. versionadded:: 1.1.0 List of ``[ref=xxx]`` markup items in the text with the bounding box of all the words contained in a ref, available only after rendering. For example, if you wrote:: Check out my [ref=hello]link[/ref] The refs will be set with:: {'hello': ((64, 0, 78, 16), )} The references marked "hello" have a bounding box at (x1, y1, x2, y2). These co-ordinates are relative to the top left corner of the text, with the y value increasing downwards. You can define multiple refs with the same name: each occurrence will be added as another (x1, y1, x2, y2) tuple to this list. The current Label implementation uses these references if they exist in your markup text, automatically doing the collision with the touch and dispatching an `on_ref_press` event. You can bind a ref event like this:: def print_it(instance, value): print('User click on', value) widget = Label(text='Hello [ref=world]World[/ref]', markup=True) widget.on_ref_press(print_it) .. note:: This works only with markup text. You need :attr:`markup` set to True. ''' anchors = DictProperty({}) ''' .. versionadded:: 1.1.0 Position of all the ``[anchor=xxx]`` markup in the text. These co-ordinates are relative to the top left corner of the text, with the y value increasing downwards. Anchors names should be unique and only the first occurrence of any duplicate anchors will be recorded. You can place anchors in your markup text as follows:: text = """ [anchor=title1][size=24]This is my Big title.[/size] [anchor=content]Hello world """ Then, all the ``[anchor=]`` references will be removed and you'll get all the anchor positions in this property (only after rendering):: >>> widget = Label(text=text, markup=True) >>> widget.texture_update() >>> widget.anchors {"content": (20, 32), "title1": (20, 16)} .. note:: This works only with markup text. You need :attr:`markup` set to True. ''' max_lines = NumericProperty(0) '''Maximum number of lines to use, defaults to 0, which means unlimited. Please note that :attr:`shorten` take over this property. (with shorten, the text is always one line.) .. versionadded:: 1.8.0 :attr:`max_lines` is a :class:`~kivy.properties.NumericProperty` and defaults to 0. ''' strip = BooleanProperty(False) '''Whether leading and trailing spaces and newlines should be stripped from each displayed line. If True, every line will start at the right or left edge, depending on :attr:`halign`. If :attr:`halign` is `justify` it is implicitly True. .. versionadded:: 1.9.0 :attr:`strip` is a :class:`~kivy.properties.BooleanProperty` and defaults to False. ''' font_hinting = OptionProperty( 'normal', options=[None, 'normal', 'light', 'mono'], allownone=True) '''What hinting option to use for font rendering. Can be one of `'normal'`, `'light'`, `'mono'` or None. .. note:: This feature requires the SDL2 text provider. .. versionadded:: 1.10.0 :attr:`font_hinting` is an :class:`~kivy.properties.OptionProperty` and defaults to `'normal'`. ''' font_kerning = BooleanProperty(True) '''Whether kerning is enabled for font rendering. .. note:: This feature requires the SDL2 text provider. .. versionadded:: 1.10.0 :attr:`font_kerning` is a :class:`~kivy.properties.BooleanProperty` and defaults to True. ''' font_blended = BooleanProperty(True) '''Whether blended or solid font rendering should be used. .. note:: This feature requires the SDL2 text provider. .. versionadded:: 1.10.0 :attr:`font_blended` is a :class:`~kivy.properties.BooleanProperty` and defaults to True. '''