117 lines
4.1 KiB
Python
117 lines
4.1 KiB
Python
#!/usr/bin/env python
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#
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# The MIT License (MIT)
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#
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# Copyright (c) <2022-Present> <Alex Huszagh>
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the 'Software'), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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'''
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placeholder_text
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================
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Example showing how to style the placeholder text for QLineEdit,
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QTextEdit, and QPlainTextEdit, since in Qt6 is can be styled as
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the default text color. This seems to be an issue with palettes for
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Qt6 in `QPalette::PlaceholderText`, since both the stylesheets
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and palette edits correctly affect styles in Qt5, but not Qt6.
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'''
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import shared
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import sys
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parser = shared.create_parser()
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parser.add_argument(
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'--set-app-palette',
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help='''set the placeholder text palette globally.''',
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action='store_true'
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)
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parser.add_argument(
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'--set-widget-palette',
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help='''set the placeholder text palette for the affected widgets.''',
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action='store_true'
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)
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args, unknown = shared.parse_args(parser)
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QtCore, QtGui, QtWidgets = shared.import_qt(args)
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compat = shared.get_compat_definitions(args)
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colors = shared.get_colors(args, compat)
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def set_palette(widget, role, color):
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'''Set the palette for the placeholder text. This only works in Qt5.'''
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palette = widget.palette()
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palette.setColor(role, color)
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widget.setPalette(palette)
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def set_placeholder_palette(widget):
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set_palette(widget, compat.PlaceholderText, colors.PlaceholderColor)
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class Ui:
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'''Main class for the user interface.'''
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def setup(self, MainWindow):
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MainWindow.setObjectName('MainWindow')
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MainWindow.resize(1068, 824)
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self.centralwidget = QtWidgets.QWidget(MainWindow)
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self.centralwidget.setObjectName('centralwidget')
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self.layout = QtWidgets.QVBoxLayout(self.centralwidget)
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self.layout.setObjectName('layout')
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self.layout.setAlignment(compat.AlignHCenter)
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MainWindow.setCentralWidget(self.centralwidget)
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self.textEdit = QtWidgets.QTextEdit(self.centralwidget)
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self.textEdit.setObjectName('textEdit')
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self.textEdit.setPlaceholderText('Placeholder Text')
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self.layout.addWidget(self.textEdit)
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self.plainTextEdit = QtWidgets.QPlainTextEdit(self.centralwidget)
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self.plainTextEdit.setObjectName('plainTextEdit')
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self.plainTextEdit.setPlaceholderText('Placeholder Text')
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self.layout.addWidget(self.plainTextEdit)
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self.lineEdit = QtWidgets.QLineEdit(self.centralwidget)
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self.lineEdit.setObjectName('lineEdit')
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self.lineEdit.setPlaceholderText('Placeholder Text')
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self.layout.addWidget(self.lineEdit)
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# Set the palettes.
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if args.set_widget_palette:
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set_placeholder_palette(self.textEdit)
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set_placeholder_palette(self.plainTextEdit)
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set_placeholder_palette(self.lineEdit)
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def main():
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'Application entry point'
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app, window = shared.setup_app(args, unknown, compat)
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if args.set_app_palette:
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set_placeholder_palette(app)
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# setup ui
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ui = Ui()
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ui.setup(window)
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window.setWindowTitle('Stylized Placeholder Text.')
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shared.set_stylesheet(args, app, compat)
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return shared.exec_app(args, app, window, compat)
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if __name__ == '__main__':
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sys.exit(main())
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