340 lines
9.7 KiB
Python
340 lines
9.7 KiB
Python
# vim: ft=python fileencoding=utf-8 sts=4 sw=4 et:
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# Copyright 2014-2018 Florian Bruhin (The Compiler) <mail@qutebrowser.org>
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#
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# This file is part of qutebrowser.
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#
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# qutebrowser is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# qutebrowser is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with qutebrowser. If not, see <http://www.gnu.org/licenses/>.
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"""Misc. widgets used at different places."""
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from PyQt5.QtCore import pyqtSlot, pyqtSignal, Qt, QSize, QTimer
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from PyQt5.QtWidgets import (QLineEdit, QWidget, QHBoxLayout, QLabel,
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QStyleOption, QStyle, QLayout, QApplication)
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from PyQt5.QtGui import QValidator, QPainter
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from qutebrowser.config import config
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from qutebrowser.utils import utils
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from qutebrowser.misc import cmdhistory
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class MinimalLineEditMixin:
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"""A mixin to give a QLineEdit a minimal look and nicer repr()."""
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def __init__(self):
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self.setStyleSheet("""
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QLineEdit {
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border: 0px;
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padding-left: 1px;
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background-color: transparent;
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}
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""")
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self.setAttribute(Qt.WA_MacShowFocusRect, False)
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def keyPressEvent(self, e):
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"""Override keyPressEvent to paste primary selection on Shift + Ins."""
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if e.key() == Qt.Key_Insert and e.modifiers() == Qt.ShiftModifier:
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try:
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text = utils.get_clipboard(selection=True, fallback=True)
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except utils.ClipboardError:
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e.ignore()
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else:
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e.accept()
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self.insert(text)
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return
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super().keyPressEvent(e)
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def __repr__(self):
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return utils.get_repr(self)
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class CommandLineEdit(QLineEdit):
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"""A QLineEdit with a history and prompt chars.
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Attributes:
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history: The command history object.
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_validator: The current command validator.
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_promptlen: The length of the current prompt.
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"""
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def __init__(self, *, parent=None):
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super().__init__(parent)
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self.history = cmdhistory.History(parent=self)
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self._validator = _CommandValidator(self)
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self.setValidator(self._validator)
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self.textEdited.connect(self.on_text_edited)
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self.cursorPositionChanged.connect(self.__on_cursor_position_changed)
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self._promptlen = 0
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def __repr__(self):
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return utils.get_repr(self, text=self.text())
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@pyqtSlot(str)
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def on_text_edited(self, _text):
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"""Slot for textEdited. Stop history browsing."""
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self.history.stop()
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@pyqtSlot(int, int)
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def __on_cursor_position_changed(self, _old, new):
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"""Prevent the cursor moving to the prompt.
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We use __ here to avoid accidentally overriding it in subclasses.
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"""
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if new < self._promptlen:
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self.cursorForward(self.hasSelectedText(), self._promptlen - new)
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def set_prompt(self, text):
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"""Set the current prompt to text.
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This updates the validator, and makes sure the user can't move the
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cursor behind the prompt.
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"""
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self._validator.prompt = text
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self._promptlen = len(text)
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class _CommandValidator(QValidator):
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"""Validator to prevent the : from getting deleted.
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Attributes:
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prompt: The current prompt.
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"""
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def __init__(self, parent=None):
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super().__init__(parent)
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self.prompt = None
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def validate(self, string, pos):
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"""Override QValidator::validate.
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Args:
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string: The string to validate.
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pos: The current cursor position.
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Return:
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A tuple (status, string, pos) as a QValidator should.
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"""
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if self.prompt is None or string.startswith(self.prompt):
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return (QValidator.Acceptable, string, pos)
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else:
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return (QValidator.Invalid, string, pos)
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class DetailFold(QWidget):
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"""A "fold" widget with an arrow to show/hide details.
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Attributes:
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_folded: Whether the widget is currently folded or not.
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_hbox: The HBoxLayout the arrow/label are in.
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_arrow: The FoldArrow widget.
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Signals:
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toggled: Emitted when the widget was folded/unfolded.
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arg 0: bool, if the contents are currently visible.
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"""
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toggled = pyqtSignal(bool)
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def __init__(self, text, parent=None):
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super().__init__(parent)
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self._folded = True
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self._hbox = QHBoxLayout(self)
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self._hbox.setContentsMargins(0, 0, 0, 0)
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self._arrow = _FoldArrow()
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self._hbox.addWidget(self._arrow)
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label = QLabel(text)
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self._hbox.addWidget(label)
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self._hbox.addStretch()
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def toggle(self):
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"""Toggle the fold of the widget."""
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self._folded = not self._folded
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self._arrow.fold(self._folded)
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self.toggled.emit(not self._folded)
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def mousePressEvent(self, e):
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"""Toggle the fold if the widget was pressed.
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Args:
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e: The QMouseEvent.
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"""
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if e.button() == Qt.LeftButton:
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e.accept()
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self.toggle()
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else:
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super().mousePressEvent(e)
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class _FoldArrow(QWidget):
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"""The arrow shown for the DetailFold widget.
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Attributes:
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_folded: Whether the widget is currently folded or not.
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"""
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def __init__(self, parent=None):
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super().__init__(parent)
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self._folded = True
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def fold(self, folded):
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"""Fold/unfold the widget.
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Args:
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folded: The new desired state.
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"""
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self._folded = folded
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self.update()
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def paintEvent(self, _event):
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"""Paint the arrow.
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Args:
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_paint: The QPaintEvent (unused).
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"""
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opt = QStyleOption()
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opt.initFrom(self)
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painter = QPainter(self)
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if self._folded:
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elem = QStyle.PE_IndicatorArrowRight
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else:
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elem = QStyle.PE_IndicatorArrowDown
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self.style().drawPrimitive(elem, opt, painter, self)
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def minimumSizeHint(self):
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"""Return a sensible size."""
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return QSize(8, 8)
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class WrapperLayout(QLayout):
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"""A Qt layout which simply wraps a single widget.
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This is used so the widget is hidden behind a defined API and can't
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easily be accidentally accessed.
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"""
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def __init__(self, parent=None):
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super().__init__(parent)
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self._widget = None
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def addItem(self, _widget):
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raise utils.Unreachable
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def sizeHint(self):
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return self._widget.sizeHint()
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def itemAt(self, _index):
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return None
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def takeAt(self, _index):
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raise utils.Unreachable
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def setGeometry(self, rect):
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self._widget.setGeometry(rect)
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def wrap(self, container, widget):
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"""Wrap the given widget in the given container."""
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self._widget = widget
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container.setFocusProxy(widget)
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widget.setParent(container)
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def unwrap(self):
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self._widget.setParent(None)
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self._widget.deleteLater()
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class PseudoLayout(QLayout):
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"""A layout which isn't actually a real layout.
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This is used to replace QWebEngineView's internal layout, as a WORKAROUND
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for https://bugreports.qt.io/browse/QTBUG-68224 and other related issues.
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This is partly inspired by https://codereview.qt-project.org/#/c/230894/
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which does something similar as part of Qt.
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"""
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def addItem(self, item):
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assert self.parent() is not None
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item.widget().setParent(self.parent())
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def removeItem(self, item):
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item.widget().setParent(None)
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def count(self):
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return 0
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def itemAt(self, _pos):
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return None
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def widget(self):
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return self.parent().render_widget()
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def setGeometry(self, rect):
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"""Resize the render widget when the view is resized."""
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widget = self.widget()
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if widget is not None:
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widget.setGeometry(rect)
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def sizeHint(self):
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"""Make sure the view has the sizeHint of the render widget."""
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widget = self.widget()
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if widget is not None:
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return widget.sizeHint()
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return QSize()
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class FullscreenNotification(QLabel):
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"""A label telling the user this page is now fullscreen."""
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def __init__(self, parent=None):
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super().__init__(parent)
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self.setStyleSheet("""
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background-color: rgba(50, 50, 50, 80%);
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color: white;
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border-radius: 20px;
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padding: 30px;
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""")
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all_bindings = config.key_instance.get_reverse_bindings_for('normal')
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bindings = all_bindings.get('fullscreen --leave')
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if bindings:
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key = bindings[0]
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self.setText("Press {} to exit fullscreen.".format(key))
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else:
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self.setText("Page is now fullscreen.")
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self.resize(self.sizeHint())
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if config.val.content.windowed_fullscreen:
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geom = self.parentWidget().geometry()
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else:
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geom = QApplication.desktop().screenGeometry(self)
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self.move((geom.width() - self.sizeHint().width()) / 2, 30)
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def set_timeout(self, timeout):
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"""Hide the widget after the given timeout."""
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QTimer.singleShot(timeout, self._on_timeout)
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@pyqtSlot()
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def _on_timeout(self):
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"""Hide and delete the widget."""
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self.hide()
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self.deleteLater()
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