147 lines
4.5 KiB
Python
147 lines
4.5 KiB
Python
from logging import getLogger
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from typing import Union, Protocol
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from PyQt5.QtCore import (
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Qt,
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QRect,
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QSize,
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QPoint,
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pyqtSignal,
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)
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from PyQt5.QtGui import QFontMetrics
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from PyQt5.QtWidgets import (
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QStyle,
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QLabel,
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QWidget,
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QStyleOptionTab,
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QStylePainter,
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QTabBar,
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QTabWidget,
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QVBoxLayout,
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QScrollArea, QLayout, QSizePolicy,
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)
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from rare.utils.misc import qta_icon
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logger = getLogger("SideTab")
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class SideTabBar(QTabBar):
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def __init__(self, padding: int = -1, parent=None):
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super(SideTabBar, self).__init__(parent=parent)
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self.setObjectName(type(self).__name__)
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self.padding = padding
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self.fm = QFontMetrics(self.font())
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def tabSizeHint(self, index):
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width = QTabBar.tabSizeHint(self, index).height()
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if self.padding < 0:
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width += QTabBar.tabSizeHint(self, index).width()
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else:
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width += self.padding
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return QSize(width, self.fm.height() + 18)
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def paintEvent(self, event):
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painter = QStylePainter(self)
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opt = QStyleOptionTab()
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for i in range(self.count()):
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self.initStyleOption(opt, i)
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painter.drawControl(QStyle.CE_TabBarTabShape, opt)
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painter.save()
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s = opt.rect.size()
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s.transpose()
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r = QRect(QPoint(), s)
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r.moveCenter(opt.rect.center())
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opt.rect = r
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c = self.tabRect(i).center()
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painter.translate(c)
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painter.rotate(90)
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painter.translate(-c)
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painter.drawControl(QStyle.CE_TabBarTabLabel, opt)
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painter.restore()
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class SideTabContents(object):
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# str: title
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set_title = pyqtSignal(str)
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implements_scrollarea: bool = False
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class SideTabContentsProtocol(Protocol):
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implements_scrollarea: bool
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def layout(self) -> QLayout:
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pass
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def set_title(self) -> pyqtSignal:
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pass
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def sizeHint(self) -> QSize:
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pass
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class SideTabContainer(QWidget):
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def __init__(self, widget: Union[QWidget, SideTabContentsProtocol], title: str = "", parent: QWidget = None):
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super(SideTabContainer, self).__init__(parent=parent)
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self.title = QLabel(self)
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self.setTitle(title)
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if widget.layout():
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widget.layout().setAlignment(Qt.AlignTop)
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widget.layout().setContentsMargins(0, 0, 3, 0)
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if hasattr(widget, "set_title"):
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widget.set_title.connect(self.setTitle)
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layout = QVBoxLayout(self)
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layout.addWidget(self.title)
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if not hasattr(widget, "implements_scrollarea") or not widget.implements_scrollarea:
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scrollarea = QScrollArea(self)
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scrollarea.setSizeAdjustPolicy(QScrollArea.AdjustToContents)
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scrollarea.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
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scrollarea.setFrameStyle(QScrollArea.NoFrame)
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scrollarea.setMinimumWidth(
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widget.sizeHint().width() + scrollarea.verticalScrollBar().sizeHint().width()
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)
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scrollarea.setWidgetResizable(True)
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widget.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Fixed)
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scrollarea.setWidget(widget)
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scrollarea.widget().setAutoFillBackground(False)
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scrollarea.viewport().setAutoFillBackground(False)
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layout.addWidget(scrollarea)
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else:
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layout.addWidget(widget)
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layout.setAlignment(Qt.AlignTop)
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def setTitle(self, text: str) -> None:
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self.title.setText(f"<h2>{text}</h2>")
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self.title.setVisible(bool(text))
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class SideTabWidget(QTabWidget):
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back_clicked = pyqtSignal()
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def __init__(self, show_back: bool = False, padding: int = -1, parent=None):
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super(SideTabWidget, self).__init__(parent=parent)
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self.setTabBar(SideTabBar(padding=padding, parent=self))
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self.setDocumentMode(True)
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self.setTabPosition(QTabWidget.West)
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if show_back:
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super(SideTabWidget, self).addTab(
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QWidget(self), qta_icon("mdi.keyboard-backspace", "ei.backward"), self.tr("Back")
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)
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self.tabBarClicked.connect(self.back_func)
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def back_func(self, tab):
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# shortcut for tab == 0
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if not tab:
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self.back_clicked.emit()
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def addTab(self, widget: Union[QWidget, SideTabContentsProtocol], a1: str, title: str = "") -> int:
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container = SideTabContainer(widget, title, parent=self)
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return super(SideTabWidget, self).addTab(container, a1)
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