New QTextBlockFormat from QTextDocument 's StyleSheet

Jim Gir

Hi,
If I specify mydoc.setStyleSheet(some css), and I create a new QTextBlocFormat the formatting of the new blockFormat is not the one specified in stylesheet.
How can I do it ?
Thanks
Jimmy

JonB

@Jim-Gir
I'm lost. There is no QTextDocument::setStyleSheet(). QTextDocument is not a QWidget. There is a QTextDocument::setDefaultStyleSheet(), but that is not what you say you are using. So how do you get your code to compile/run with mydoc.setStyleSheet()?

Jim Gir

oh sorry, I meant setDefaultStyleSheet(). And that's my problem. this should set a default style but creating new QTextBlocFormat doesn't seet style like in my custom css.

Jim Gir

Here is a snippet (it's python I don't think it changes anything)

from PySide2.QtGui import QTextDocument, QTextCursor, QTextBlockFormat, QTextCharFormat, QBrush, QColor

a = QTextDocument()
a.setDefaultStyleSheet("""h2 {margin-top: 20px;}""")
a.setHtml("")

bf = QTextBlockFormat()
bf.setHeadingLevel(2)

print(bf.topMargin())
# 0.0

c = QTextCursor(a)
c.insertBlock(bf)

print(a.toHtml())
# <body style=" font-family:''; font-weight:400; font-style:normal;">
# <p style="-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><br /></p>
# <h2 style="-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><br /></h2></body></html>

in this example h2 margin-top is never set as I expect

JonB

@Jim-Gir
Test out using

for example using setHtml() or QTextCursor::insertHtml().

and see whether these do work? https://doc.qt.io/qt-5/qtextdocument.html#defaultStyleSheet-prop only states these work.

Jim Gir

Ok I see. inserthtml was my first try before using insertblock. But using It I can't add new block.

a = QTextDocument()
a.setDefaultStyleSheet("""h2 {margin-top: 20px;} p {margin-top: 15px;}""")
a.setHtml("""<p>bbb</p>""")

c = QTextCursor(a)
c.movePosition(QTextCursor.End)
c.insertHtml("<h2>bla</h2>")
print(a.toHtml())

#<html><head><meta name="qrichtext" content="1" /><style type="text/css">
#p, li { white-space: pre-wrap; }
#</style></head><body style=" font-family:''; font-weight:400; font-style:normal;">
#<p style=" margin-top:15px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">bbb<span style=" font-size:x-large; font-weight:600;">bla</span></p></body></html>