import sys
from PySide2.QtWidgets import QApplication, QLabel
if __name__ == "__main__":
app = QApplication(sys.argv)
label = QLabel("Hello World")
# Displaying html in the label
label = QLabel("<font color=red size=40>Hello World</font>")
label.alignment()
label.show()
sys.exit(app.exec_())
class labelDlg(QDialog):
"""
Displays a floating modal text window.
If search is True, a search field editor is added on top of the window.
"""
def __init__(self,
parent=None,
title='',
wSize=QSize(500, 500),
scroll=True,
search=False,
modal=True):
super().__init__(parent)
self.setWindowTitle(parent.tr(title))
self.setStyleSheet(
" * {background-color: rgb(220, 220, 220); color: black;}\
QLabel {selection-background-color: blue; selection-color: white}\
QLineEdit {background-color: white;}")
self.setModal(modal)
self.label = QLabel()
self.label.setAlignment(Qt.AlignTop)
#self.label.setStyleSheet("selection-background-color: blue; selection-color: white}")
vl = QVBoxLayout()
if search:
ed = QLineEdit()
ed.setMaximumWidth(300)
ed.setPlaceholderText('Search')
vl = QVBoxLayout()
hl = QHBoxLayout()
hl.addWidget(ed)
button = QPushButton('Next')
button.setAutoDefault(False)
button.setMaximumWidth(60)
hl.addWidget(button)
vl.addLayout(hl)
matches = []
current = 0
def f(searchedText):
import re
nonlocal current
matches.clear()
current = 0
matches.extend([
m.span() for m in re.finditer(
searchedText, self.label.text(), re.IGNORECASE
| re.MULTILINE | re.DOTALL)
])
if matches:
item = matches[0]
self.label.setSelection(item[0], item[1] - item[0])
metrics = self.label.fontMetrics()
tabSize = 4
rect = metrics.boundingRect(
0, 0, 150000, 150000,
self.label.alignment() | Qt.TextExpandTabs,
self.label.text()[:item[1]], tabSize)
scarea.ensureVisible(0, rect.height())
def g():
nonlocal current
if not matches or not button.isDown():
return
current = (current + 1) % len(matches)
item = matches[current]
self.label.setSelection(item[0], item[1] - item[0])
metrics = self.label.fontMetrics()
tabSize = 4
rect = metrics.boundingRect(
0, 0, 150000, 150000,
self.label.alignment() | Qt.TextExpandTabs,
self.label.text()[:item[1]], tabSize)
scarea.ensureVisible(0, rect.height())
button.pressed.connect(g)
ed.textEdited.connect(f)
if scroll:
scarea = QScrollArea()
scarea.setWidget(self.label)
scarea.setWidgetResizable(True)
vl.addWidget(scarea)
else:
vl.addWidget(self.label)
self.setLayout(vl)
self.setFixedSize(wSize)
def wrapped(self, s):
"""
Returns wrapped text, according to the current font and size of label.
NOT updated when these parameters are modified.
@param s: text to wrap
@type s: str
@return:
@rtype: list of str
"""
metrics = self.label.fontMetrics()
tabSize = 4
# get max character count per line
testText = 'WWWWWWWWWWWWWWW' # start from a minimum width !
while metrics.boundingRect(0, 0, 150000, 150000,
self.label.alignment() | Qt.TextExpandTabs,
testText,
tabSize).width() < self.label.width():
testText += 'W'
# wrap text while keeping existing newlines
s = '\n'.join([
'\n'.join(
textwrap.wrap(line,
len(testText),
break_long_words=False,
replace_whitespace=False))
for line in s.splitlines()
])
return s
