piker/piker/ui/_icons.py

91 lines
2.6 KiB
Python

# piker: trading gear for hackers
# Copyright (C) Tyler Goodlet (in stewardship for pikers)
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
'''
``QIcon`` hackery.
'''
from PyQt5.QtWidgets import QStyle
from PyQt5.QtGui import (
QIcon, QPixmap, QColor
)
from PyQt5.QtCore import QSize
from ._style import hcolor
# https://www.pythonguis.com/faq/built-in-qicons-pyqt/
# account status icons taken from built-in set
_icon_names: dict[str, str] = {
# these two seem to work for our mask hack done below to
# change the coloring.
'long_pp': 'SP_TitleBarShadeButton',
'short_pp': 'SP_TitleBarUnshadeButton',
'ready': 'SP_MediaPlay',
}
_icons: dict[str, QIcon] = {}
def mk_icons(
style: QStyle,
size: QSize,
) -> dict[str, QIcon]:
'''This helper is indempotent.
'''
global _icons, _icon_names
if _icons:
return _icons
_icons[None] = QIcon() # the "null" icon
# load account selection using current style
for name, icon_name in _icon_names.items():
stdpixmap = getattr(QStyle, icon_name)
stdicon = style.standardIcon(stdpixmap)
pixmap = stdicon.pixmap(size)
# fill hack from SO to change icon color:
# https://stackoverflow.com/a/38369468
out_pixmap = QPixmap(size)
out_pixmap.fill(QColor(hcolor('default_spotlight')))
out_pixmap.setMask(pixmap.createHeuristicMask())
# TODO: not idea why this doesn't work / looks like
# trash. Sure would be nice to just generate our own
# pixmaps on the fly..
# p = QPainter(out_pixmap)
# p.setOpacity(1)
# p.setBrush(QColor(hcolor('papas_special')))
# p.setPen(QColor(hcolor('default_lightest')))
# path = mk_marker_path(style='|<')
# p.scale(6, 6)
# # p.translate(0, 0)
# p.drawPath(path)
# p.save()
# p.end()
# del p
# icon = QIcon(out_pixmap)
icon = QIcon()
icon.addPixmap(out_pixmap)
_icons[name] = icon
return _icons