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# Copyright (C) 2017 Damon Lynch <damonlynch@gmail.com>
# This file is part of Rapid Photo Downloader.
#
# Rapid Photo Downloader is free software: you can redistribute it and/or
# modify it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Rapid Photo Downloader 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Rapid Photo Downloader. If not,
# see <http://www.gnu.org/licenses/>.
"""
Display messages to the user in stacked widget
"""
__author__ = 'Damon Lynch'
__copyright__ = "Copyright 2017, Damon Lynch"
from typing import Tuple
from gettext import gettext as _
from PyQt5.QtCore import (Qt, pyqtSlot, pyqtSignal)
from PyQt5.QtWidgets import (QSizePolicy, QStackedWidget, QPushButton, QLabel)
from PyQt5.QtGui import (QMouseEvent, QFocusEvent)
class MessageWidget(QStackedWidget):
"""
Display messages to the user in stacked widget.
Index 0 always represents a blank state.
Other indexes represent the position in the
tuple of messages.
If the message does not start with an html tag <i> or <b>,
the start of the message will be modified to display <i><b>Hint:</b>
(with closing tags too, naturally).
"""
def __init__(self, messages: Tuple[str,...], parent=None) -> None:
super().__init__(parent)
# For some obscure reason, must set the label types for all labels in the stacked
# widget to have the same properties, or else the stacked layout size goes bonkers.
# Must make the empty label contain *something*, too, so make it contain a space.
blank = QLabel(' ')
blank.setWordWrap(True)
blank.setTextFormat(Qt.RichText)
self.addWidget(blank)
for message in messages:
if message.startswith('<i>') or message.startswith('<b>'):
label = QLabel(message)
else:
# Translators: please do not modify or leave out html formatting tags like <i> and
# <b>. These are used to format the text the users sees
label = QLabel(_("<i><b>Hint:</b> %(message)s") % dict(message=message))
label.setWordWrap(True)
label.setTextFormat(Qt.RichText)
label.setAlignment(Qt.AlignTop|Qt.AlignLeft)
self.addWidget(label)
self.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Maximum)
class MessageButton(QPushButton):
"""
A simple QPushButton that emits a signal when it is entered / exited.
"""
isActive = pyqtSignal()
isInactive = pyqtSignal()
def __init__(self, label: str, parent=None) -> None:
super().__init__(label, parent)
@pyqtSlot(QMouseEvent)
def enterEvent(self, event: QMouseEvent) -> None:
self.isActive.emit()
super().enterEvent(event)
@pyqtSlot(QMouseEvent)
def leaveEvent(self, event: QMouseEvent) -> None:
self.isInactive.emit()
super().leaveEvent(event)
@pyqtSlot(QFocusEvent)
def focusInEvent(self, event: QFocusEvent) -> None:
self.isActive.emit()
super().focusInEvent(event)
@pyqtSlot(QFocusEvent)
def focusOutEvent(self, event: QFocusEvent) -> None:
self.isInactive.emit()
super().focusOutEvent(event)
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