textout/textoutpc/Tags/Text.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

from .__base__ import *
from .__color__ import *

__all__ = ["TextoutTextTag"]

# ---
# Data.
# ---

_fonts = {
	"arial": "Arial",
	"comic": "Comic MS",
	"tahoma": "Tahoma",
	"courier": "Courier",
	"haettenschweiler": "Haettenschweiler",
	"mono": "monospace",
	"monospace": "monospace"
}

# ---
# Tag definition.
# ---

class TextoutTextTag(TextoutInlineTag):
	""" Main tag for setting text formatting.
		Example uses:
		
		[b]Bold text.[/b]
		[i]Italic text.[/i]
		[u]Underlined text.[/u]
		[strike]Striked text.[/strike]
		[font=arial]Arial text.[/font]
		[arial]Arial text again.[/arial]
		[blue]This will be in blue[/blue]
		[color=blue]This as well[/color]
		[color=rgb(255, 255, 255, 0.4)]BLACKNESS[/color]
		[color=hsl(0, 100%, 0.5)]This will be red.[/color]
	"""

	aliases = ('[b]', '[i]', '[u]', '[s]', '[strike]',
		'[monospace]', '[mono]', '[font]', '[color]',
		'[arial]', '[comic]', '[tahoma]', '[courier]',
		'[haettenschweiler]', '[red]', '[green]', '[blue]',
		'[yellow]', '[maroon]', '[purple]', '[gray]',
		'[grey]', '[brown]')

	def prepare(self, name, value):
		self._bold = False
		self._italic = False
		self._underline = False
		self._strike = False
		self._font = None
		self._color = None

		name = name[1:-1]
		if name == "b":
			self._bold = True
		elif name == "i":
			self._italic = True
		elif name == "u":
			self._underline = True
		elif name in ("s", "strike"):
			self._strike = True
		elif name == "color":
			self._color = get_color(value)
		elif name == "font":
			assert value in _fonts
			self._font = value
		elif name in _fonts:
			self._font = value
		else:
			self._color = get_color(name)

	def begin_html(self):
		props = []
		if self._font:
			props.append('font-family: ' + self._font)
		if self._color:
			# always append the #rgb color: it will be read by older
			# browsers if the `rgba()` function isn't supported.

			props.append('color: #%02X%02X%02X' % self._color[0:3])
			if self._color[3] < 1.0:
				props.append('color: rgba({}, {}, {}, {})' \
					.format(*self._color))

		self._has_props = bool(props)
		props = '<span style="{}">'.format('; '.join(props)) if props else ''

		return '' \
			+ ('', '<b>')[self._bold] \
			+ ('', '<i>')[self._italic] \
			+ ('', '<u>')[self._underline] \
			+ ('', '<strike>')[self._strike] \
			+ props

	def end_html(self):
		return '' \
			+ ('', '</span>')[self._has_props] \
			+ ('', '</strike>')[self._strike] \
			+ ('', '</u>')[self._underline] \
			+ ('', '</i>')[self._italic] \
			+ ('', '</b>')[self._bold]

# End of file.