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Temporary fix for: Undo/redo works in some text areas but not others #34

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Olivier Keshavjee 2017-10-14 10:35:48 +02:00
parent 6bc74454c7
commit 6a88cb9aca
1 changed files with 18 additions and 2 deletions
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20
manuskript/ui/editors/basicHighlighter.py
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@ -41,9 +41,25 @@ class basicHighlighter(QSyntaxHighlighter):
When subclassing basicHighlighter, you must call highlightBlockBefore
before you do any custom highlighting.
"""
#print(">", self.currentBlock().document().availableUndoSteps())
c = QTextCursor(self.currentBlock())
#c.joinPreviousEditBlock()
bf = QTextBlockFormat(self._defaultBlockFormat)
bf.setAlignment(QTextCursor(self.currentBlock()).blockFormat().alignment())
QTextCursor(self.currentBlock()).setBlockFormat(bf)
bf.setAlignment(c.blockFormat().alignment())
c.setBlockFormat(bf)
#c.endEditBlock()
#print(" ", self.currentBlock().document().availableUndoSteps())
# This is an ugly fix.
# Calling setBlockFormat adds an item to the undo stack. Don't know why,
# or how to change that. So the stacks becomes big and it's impossible
# to undo/redo any meaningful change.
# Using QTextCursor.joinPreviousEditBlock() doesn't work.
# But calling an undo after setting block format works: it doesn't undo
# anything, and the stack is not filled.
# FIXME: redo still doesn't work
self.currentBlock().document().undo(c)
# self.setFormat(0, len(text), self._defaultCharFormat)