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# coding: utf-8
# /*##########################################################################
#
# Copyright (c) 2004-2020 European Synchrotron Radiation Facility
#
# 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.
#
# ###########################################################################*/
"""Module contains an elidable label
"""
__license__ = "MIT"
__date__ = "07/12/2018"
from silx.gui import qt
class ElidedLabel(qt.QLabel):
"""QLabel with an edile property.
By default if the text is too big, it is elided on the right.
This mode can be changed with :func:`setElideMode`.
In case the text is elided, the full content is displayed as part of the
tool tip. This behavior can be disabled with :func:`setTextAsToolTip`.
"""
def __init__(self, parent=None):
super(ElidedLabel, self).__init__(parent)
self.__text = ""
self.__toolTip = ""
self.__textAsToolTip = True
self.__textIsElided = False
self.__elideMode = qt.Qt.ElideRight
self.__updateMinimumSize()
def resizeEvent(self, event):
self.__updateText()
return qt.QLabel.resizeEvent(self, event)
def setFont(self, font):
qt.QLabel.setFont(self, font)
self.__updateMinimumSize()
self.__updateText()
def __updateMinimumSize(self):
metrics = self.fontMetrics()
width = metrics.width("...")
self.setMinimumWidth(width)
def __updateText(self):
metrics = self.fontMetrics()
elidedText = metrics.elidedText(self.__text, self.__elideMode, self.width())
qt.QLabel.setText(self, elidedText)
wasElided = self.__textIsElided
self.__textIsElided = elidedText != self.__text
if self.__textIsElided or wasElided != self.__textIsElided:
self.__updateToolTip()
def __updateToolTip(self):
if self.__textIsElided and self.__textAsToolTip:
qt.QLabel.setToolTip(self, self.__text + "<br/>" + self.__toolTip)
else:
qt.QLabel.setToolTip(self, self.__toolTip)
# Properties
def setText(self, text):
self.__text = text
self.__updateText()
def getText(self):
return self.__text
text = qt.Property(str, getText, setText)
def setToolTip(self, toolTip):
self.__toolTip = toolTip
self.__updateToolTip()
def getToolTip(self):
return self.__toolTip
toolTip = qt.Property(str, getToolTip, setToolTip)
def setElideMode(self, elideMode):
"""Set the elide mode.
:param qt.Qt.TextElideMode elidMode: Elide mode to use
"""
self.__elideMode = elideMode
self.__updateText()
def getElideMode(self):
"""Returns the used elide mode.
:rtype: qt.Qt.TextElideMode
"""
return self.__elideMode
elideMode = qt.Property(qt.Qt.TextElideMode, getToolTip, setToolTip)
def setTextAsToolTip(self, enabled):
"""Enable displaying text as part of the tooltip if it is elided.
:param bool enabled: Enable the behavior
"""
if self.__textAsToolTip == enabled:
return
self.__textAsToolTip = enabled
self.__updateToolTip()
def getTextAsToolTip(self):
"""True if an elided text is displayed as part of the tooltip.
:rtype: bool
"""
return self.__textAsToolTip
textAsToolTip = qt.Property(bool, getTextAsToolTip, setTextAsToolTip)
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