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159 lines
6 KiB
Python
159 lines
6 KiB
Python
#!/usr/bin/python
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# -*- coding: utf8 -*-
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import re
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from PyQt5.QtCore import Qt
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from PyQt5.QtGui import QBrush, QTextCursor, QColor, QFont, QSyntaxHighlighter
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from PyQt5.QtGui import QTextBlockFormat, QTextCharFormat
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import manuskript.models.references as Ref
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import manuskript.ui.style as S
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from manuskript import settings
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from manuskript import functions as F
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class BasicHighlighter(QSyntaxHighlighter):
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def __init__(self, editor):
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QSyntaxHighlighter.__init__(self, editor.document())
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self.editor = editor
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self._misspelledColor = Qt.red
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self._defaultBlockFormat = QTextBlockFormat()
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self._defaultCharFormat = QTextCharFormat()
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self.defaultTextColor = QColor(S.text)
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self.backgroundColor = QColor(S.base)
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self.markupColor = QColor(S.textLight)
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self.linkColor = QColor(S.link)
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self.spellingErrorColor = QColor(Qt.red)
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def setDefaultBlockFormat(self, bf):
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self._defaultBlockFormat = bf
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self.rehighlight()
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def setDefaultCharFormat(self, cf):
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self._defaultCharFormat = cf
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self.rehighlight()
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def setMisspelledColor(self, color):
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self._misspelledColor = color
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def updateColorScheme(self, rehighlight=True):
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"""
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Generates a base set of colors that will take account of user
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preferences, and use system style.
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"""
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# Reading user settings
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opt = settings.textEditor
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if not self.editor._fromTheme or not self.editor._themeData:
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self.defaultTextColor = QColor(opt["fontColor"])
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self.backgroundColor = (QColor(opt["background"])
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if not opt["backgroundTransparent"]
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else QColor(S.window))
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self.markupColor = F.mixColors(self.defaultTextColor,
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self.backgroundColor,
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.3)
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self.linkColor = QColor(S.link)
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self.spellingErrorColor = QColor(opt["misspelled"])
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self._defaultCharFormat.setForeground(QBrush(self.defaultTextColor))
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# FullscreenEditor probably
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else:
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opt = self.editor._themeData
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self.defaultTextColor = QColor(opt["Text/Color"])
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self.backgroundColor = QColor(opt["Background/Color"])
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self.markupColor = F.mixColors(self.defaultTextColor,
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self.backgroundColor,
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.3)
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self.linkColor = QColor(S.link)
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self.spellingErrorColor = QColor(opt["Text/Misspelled"])
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if rehighlight:
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self.rehighlight()
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def highlightBlock(self, text):
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"""Apply syntax highlighting to the given block of text.
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"""
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self.highlightBlockBefore(text)
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self.doHighlightBlock(text)
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self.highlightBlockAfter(text)
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def doHighlightBlock(self, text):
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"""
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Virtual funtion to subclass.
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"""
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pass
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def highlightBlockBefore(self, text):
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"""Highlighting to do before anything else.
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When subclassing BasicHighlighter, you must call highlightBlockBefore
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before you do any custom highlighting. Or implement doHighlightBlock.
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"""
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#print(">", self.currentBlock().document().availableUndoSteps())
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c = QTextCursor(self.currentBlock())
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#c.joinPreviousEditBlock()
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bf = QTextBlockFormat(self._defaultBlockFormat)
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if bf != c.blockFormat():
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c.setBlockFormat(bf)
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#c.endEditBlock()
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#print(" ", self.currentBlock().document().availableUndoSteps())
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# self.setFormat(0, len(text), self._defaultCharFormat)
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def highlightBlockAfter(self, text):
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"""Highlighting to do after everything else.
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When subclassing BasicHighlighter, you must call highlightBlockAfter
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after your custom highlighting. Or implement doHighlightBlock.
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"""
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# References
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for txt in re.finditer(Ref.RegEx, text):
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fmt = self.format(txt.start())
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fmt.setFontFixedPitch(True)
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fmt.setFontWeight(QFont.DemiBold)
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if txt.group(1) == Ref.TextLetter:
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fmt.setBackground(QBrush(Ref.TextHighlightColor))
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elif txt.group(1) == Ref.CharacterLetter:
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fmt.setBackground(QBrush(Ref.CharacterHighlightColor))
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elif txt.group(1) == Ref.PlotLetter:
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fmt.setBackground(QBrush(Ref.PlotHighlightColor))
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elif txt.group(1) == Ref.WorldLetter:
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fmt.setBackground(QBrush(Ref.WorldHighlightColor))
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self.setFormat(txt.start(),
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txt.end() - txt.start(),
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fmt)
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# Spell checking
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# Following algorithm would not check words at the end of line.
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# This hacks adds a space to every line where the text cursor is not
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# So that it doesn't spellcheck while typing, but still spellchecks at
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# end of lines. See github's issue #166.
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textedText = text
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if self.currentBlock().position() + len(text) != \
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self.editor.textCursor().position():
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textedText = text + " "
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# Based on http://john.nachtimwald.com/2009/08/22/qplaintextedit-with-in-line-spell-check/
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WORDS = r'(?iu)([\w\']+)[^\'\w]'
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# (?iu) means case insensitive and unicode
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if hasattr(self.editor, "spellcheck") and self.editor.spellcheck:
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for word_object in re.finditer(WORDS, textedText):
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if (self.editor._dict
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and not self.editor._dict.check(word_object.group(1))):
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format = self.format(word_object.start(1))
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format.setUnderlineColor(self._misspelledColor)
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# SpellCheckUnderline fails with some fonts
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format.setUnderlineStyle(QTextCharFormat.WaveUnderline)
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self.setFormat(word_object.start(1),
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word_object.end(1) - word_object.start(1),
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format)
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