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Add example using QPalette for links.

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Alex Huszagh 2022-12-08 15:43:31 -06:00
parent 6a8c25edd6
commit a71eb9fb5e
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3 changed files with 136 additions and 1 deletions
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2
ISSUES.md
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@ -134,7 +134,7 @@ def main():
### Links
There is no way to set the default color of a link in a `QLabel`, `QTextEdit`, `QPlainTextEdit`, `QTextBrowser`, `QMessageBox`, etc. There are a few possible workarounds.
There is no way to set the default color of a link in a `QLabel`, `QTextEdit`, `QPlainTextEdit`, `QTextBrowser`, `QMessageBox`, etc. There are a few possible workarounds. A working example using `QPalette` can be found [url.py](/example/url.py).
One is to set the link color when setting the label text, here, setting the label text to red. This will override the default color, and you can use a theme-dependent color to ensure the links are rendered properly.

10
example/shared.py
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@ -254,6 +254,8 @@ def get_compat_definitions(args):
ns.LightPalette = ns.ColorRole.Light
ns.DarkPalette = ns.ColorRole.Dark
ns.PlaceholderText = ns.ColorRole.PlaceholderText
ns.Link = ns.ColorRole.Link
ns.LinkVisited = ns.ColorRole.LinkVisited
ns.ToolTipBase = ns.ColorRole.ToolTipBase
ns.ToolTipText = ns.ColorRole.ToolTipText
ns.NoTicks = ns.TickPosition.NoTicks
@ -421,6 +423,7 @@ def get_compat_definitions(args):
ns.RubberBandRectangle = ns.RubberBandShape.Rectangle
ns.TextSelectableByMouse = ns.TextInteractionFlag.TextSelectableByMouse
ns.TextEditorInteraction = ns.TextInteractionFlag.TextEditorInteraction
ns.TextBrowserInteraction = ns.TextInteractionFlag.TextBrowserInteraction
ns.Window = ns.WindowType.Window
ns.Dialog = ns.WindowType.Dialog
ns.SubWindow = ns.WindowType.SubWindow
@ -545,6 +548,8 @@ def get_compat_definitions(args):
ns.LightPalette = QtGui.QPalette.Light
ns.DarkPalette = QtGui.QPalette.Dark
ns.PlaceholderText = QtGui.QPalette.PlaceholderText
ns.Link = QtGui.QPalette.Link
ns.LinkVisited = QtGui.QPalette.LinkVisited
ns.ToolTipBase = QtGui.QPalette.ToolTipBase
ns.ToolTipText = QtGui.QPalette.ToolTipText
ns.NoTicks = QtWidgets.QSlider.NoTicks
@ -706,6 +711,7 @@ def get_compat_definitions(args):
ns.RubberBandRectangle = QtWidgets.QRubberBand.Rectangle
ns.TextSelectableByMouse = QtCore.Qt.TextSelectableByMouse
ns.TextEditorInteraction = QtCore.Qt.TextEditorInteraction
ns.TextBrowserInteraction = QtCore.Qt.TextBrowserInteraction
ns.Window = QtCore.Qt.Window
ns.Dialog = QtCore.Qt.Dialog
ns.SubWindow = QtCore.Qt.SubWindow
@ -778,6 +784,8 @@ def get_colors(args, compat):
ns.ViewBackground = compat.QtGui.QColor(29, 32, 35)
ns.TabBackground = compat.QtGui.QColor(44, 48, 52)
ns.HighLightDark = compat.QtGui.QColor(42, 121, 163)
ns.LinkColor = compat.QtGui.QColor(88, 166, 255)
ns.LinkVisitedColor = compat.QtGui.QColor(255, 88, 250)
elif 'light' in args.stylesheet:
ns.Background = compat.QtGui.QColor(239, 240, 241)
ns.Foreground = compat.QtGui.QColor(49, 54, 59)
@ -794,6 +802,8 @@ def get_colors(args, compat):
ns.ViewBackground = compat.QtGui.QColor(239, 240, 241)
ns.TabBackground = compat.QtGui.QColor(217, 216, 215)
ns.HighLightDark = compat.QtGui.QColor(45, 147, 200, 127)
ns.LinkColor = compat.QtGui.QColor(70, 132, 204)
ns.LinkVisitedColor = compat.QtGui.QColor(204, 70, 200)
return ns

125
example/url.py Normal file
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@ -0,0 +1,125 @@
#!/usr/bin/env python
#
# The MIT License (MIT)
#
# Copyright (c) <2022-Present> <Alex Huszagh>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the 'Software'), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
'''
url
===
Example showing how to style URLs, since the color of the links
cannot be modified in stylesheets.
'''
import shared
import sys
parser = shared.create_parser()
parser.add_argument(
'--set-app-palette',
help='''set the placeholder text palette globally.''',
action='store_true'
)
parser.add_argument(
'--set-widget-palette',
help='''set the placeholder text palette for the affected widgets.''',
action='store_true'
)
args, unknown = shared.parse_args(parser)
QtCore, QtGui, QtWidgets = shared.import_qt(args)
compat = shared.get_compat_definitions(args)
colors = shared.get_colors(args, compat)
def set_palette(widget, role, color):
'''Set the palette for the placeholder text. This only works in Qt5.'''
palette = widget.palette()
palette.setColor(role, color)
widget.setPalette(palette)
def set_link_palette(widget):
set_palette(widget, compat.Link, colors.LinkColor)
set_palette(widget, compat.LinkVisited, colors.LinkVisitedColor)
class Ui:
'''Main class for the user interface.'''
def setup(self, MainWindow):
url = 'https://github.com/Alexhuszagh/BreezeStyleSheets'
MainWindow.setObjectName('MainWindow')
MainWindow.resize(400, 200)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName('centralwidget')
self.layout = QtWidgets.QVBoxLayout(self.centralwidget)
self.layout.setObjectName('layout')
self.layout.setAlignment(compat.AlignLeft)
MainWindow.setCentralWidget(self.centralwidget)
self.repository = QtWidgets.QLabel(self.centralwidget)
self.repository.setObjectName('repository')
self.repository.setText(f'[BreezeStyleSheets]({url})')
self.repository.setTextFormat(compat.MarkdownText)
self.repository.setTextInteractionFlags(compat.TextBrowserInteraction)
self.repository.setOpenExternalLinks(True)
self.layout.addWidget(self.repository)
self.issues = QtWidgets.QLabel(self.centralwidget)
self.issues.setObjectName('issues')
self.issues.setText(f'[Issues]({url}/issues)')
self.issues.setTextFormat(compat.MarkdownText)
self.issues.setTextInteractionFlags(compat.TextBrowserInteraction)
self.issues.setOpenExternalLinks(True)
self.layout.addWidget(self.issues)
self.pulls = QtWidgets.QLabel(self.centralwidget)
self.pulls.setObjectName('pulls')
self.pulls.setText(f'[Pull Requests]({url}/pulls)')
self.pulls.setTextFormat(compat.MarkdownText)
self.pulls.setTextInteractionFlags(compat.TextBrowserInteraction)
self.pulls.setOpenExternalLinks(True)
self.layout.addWidget(self.pulls)
# Set the palettes.
if args.set_widget_palette:
set_link_palette(self.repository)
set_link_palette(self.issues)
set_link_palette(self.pulls)
def main():
'Application entry point'
app, window = shared.setup_app(args, unknown, compat)
if args.set_app_palette:
set_link_palette(app)
# setup ui
ui = Ui()
ui.setup(window)
window.setWindowTitle('Stylized URL colors.')
shared.set_stylesheet(args, app, compat)
return shared.exec_app(args, app, window, compat)
if __name__ == '__main__':
sys.exit(main())