# Copyright (C) 2017 DESY, Christoph Rosemann, Notkestr. 85, D-22607 Hamburg
#
# lavue is an image viewing program for photon science imaging detectors.
# Its usual application is as a live viewer using hidra as data source.
#
# This program 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 in version 2
# of the License.
#
# 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor,
# Boston, MA 02110-1301, USA.
#
# Authors:
# Christoph Rosemann <christoph.rosemann@desy.de>
# Jan Kotanski <jan.kotanski@desy.de>
#
""" level widget """
from .qtuic import uic
import pyqtgraph as _pg
from pyqtgraph import QtCore
from .histogramWidget import HistogramHLUTWidget
from . import messageBox
from . import gradientDialog
try:
from pyqtgraph import QtWidgets
except Exception:
from pyqtgraph import QtGui as QtWidgets
# from .histogramWidget import HistogramHLUTItem
import math
import os
import logging
_VMAJOR, _VMINOR, _VPATCH = _pg.__version__.split(".")[:3] \
if _pg.__version__ else ("0", "9", "0")
try:
_NPATCH = int(_VPATCH)
except Exception:
_NPATCH = 0
_PQGVER = int(_VMAJOR) * 1000 + int(_VMINOR) * 100 + _NPATCH
_formclass, _baseclass = uic.loadUiType(
os.path.join(os.path.dirname(os.path.abspath(__file__)),
"ui", "LevelsGroupBox.ui"))
logger = logging.getLogger("lavue")
[docs]class LevelsGroupBox(QtWidgets.QWidget):
"""
Set minimum and maximum displayed values and its color.
"""
#: (:class:`pyqtgraph.QtCore.pyqtSignal`) minimum level changed signal
minLevelChanged = QtCore.pyqtSignal(float)
#: (:class:`pyqtgraph.QtCore.pyqtSignal`) maximum level changed signal
maxLevelChanged = QtCore.pyqtSignal(float)
#: (:class:`pyqtgraph.QtCore.pyqtSignal`) channel levels changed signal
channelLevelsChanged = QtCore.pyqtSignal()
#: (:class:`pyqtgraph.QtCore.pyqtSignal`) automatic levels changed signal
autoLevelsChanged = QtCore.pyqtSignal(int)
#: (:class:`pyqtgraph.QtCore.pyqtSignal`) levels changed signal
levelsChanged = QtCore.pyqtSignal()
#: (:class:`pyqtgraph.QtCore.pyqtSignal`) store settings requested
storeSettingsRequested = QtCore.pyqtSignal()
#: (:class:`pyqtgraph.QtCore.pyqtSignal`) gradient changed signal
gradientChanged = QtCore.pyqtSignal()
def __init__(self, parent=None, settings=None, expertmode=False):
""" constructor
:param parent: parent object
:type parent: :class:`pyqtgraph.QtCore.QObject`
:param settings: lavue configuration settings
:type settings: :class:`lavuelib.settings.Settings`
:param expertmode: expert mode flag
:type expertmode: :obj:`bool`
"""
QtWidgets.QGroupBox.__init__(self, parent)
#: (:class:`Ui_LevelsGroupBox') ui_groupbox object from qtdesigner
self.__ui = _formclass()
self.__ui.setupUi(self)
#: (:obj: `bool`) auto levels enabled
self.__auto = True
#: (:obj: `bool`) histogram shown
self.__histo = True
#: (:obj: `bool`) levels shown
self.__levels = True
#: (:obj: `str`) scale label
self.__scaling = "sqrt"
#: (:class:`lavuelib.settings.Settings`) settings
self.__settings = settings
#: (:obj:`bool`) expert mode
self.__expertmode = expertmode
#: (:obj:`list` <:obj:`int`>) rgb channel indexes
self.__rgbchannels = (-1, -1, -1)
#: (:obj:`dict` < :obj:`str`, :obj:`dict` < :obj:`str`,`any`> >
# custom gradients
self.__customgradients = self.__settings.customGradients()
for name, gradient in self.__customgradients.items():
_pg.graphicsItems.GradientEditorItem.Gradients[name] = gradient
self._addGradientItem(name)
#: (:obj: `float`) minimum intensity level value
self.__minval = 0.2
#: (:obj: `float`) maximum intensity level value
self.__maxval = 1.1
#: (:obj: `float`) minimum maximum intensity level value
# for separete channels
self.__channels = None
#: (:obj: `int`) channel to display
self.__dchl = 0
#: (:obj:`bool`) gradient colors flag
self.__gradientcolors = False
self.__ui.minDoubleSpinBox.setMinimum(-10e20)
self.__ui.minDoubleSpinBox.setMaximum(10e20)
self.__ui.maxDoubleSpinBox.setMinimum(-10e20)
self.__ui.maxDoubleSpinBox.setMaximum(10e20)
#: (:class: `lavuelib.histogramWidget.HistogramHLUTWidget`)
#: intensity histogram widget
for name in _pg.graphicsItems.GradientEditorItem.\
Gradients.keys():
self._addGradientItem(name)
self.__histograms = [
HistogramHLUTWidget(bins='auto', step='auto',
expertmode=expertmode),
HistogramHLUTWidget(bins='auto', step='auto',
expertmode=expertmode),
HistogramHLUTWidget(bins='auto', step='auto',
expertmode=expertmode)
]
self.__histogram = self.__histograms[0]
self.__histconnect = [False, False, False]
self.__onLevelsSlots = [
self._onLevelsChanged,
self._onLevelsChanged1,
self._onLevelsChanged2
]
self.__changeGradientSlots = [
self._changeGradient0,
self._changeGradient1,
self._changeGradient2
]
self.__saveGradientSlots = [
self._saveGradient,
self._saveGradient1,
self._saveGradient2
]
self.__removeGradientSlots = [
self._removeGradient,
self._removeGradient1,
self._removeGradient2
]
self.__rgbstatus = False
self.__ui.histogramLayout.addWidget(self.__histograms[0])
self.__ui.histogramLayout.addWidget(self.__histograms[1])
self.__ui.histogramLayout.addWidget(self.__histograms[2])
self.__ui.gradientComboBox.currentIndexChanged.connect(
self._updateGradient)
self.__ui.binsComboBox.currentIndexChanged.connect(self.setBins)
self.__hideControls()
self.__ui.autoLevelsCheckBox.stateChanged.connect(
self._onAutoLevelsChanged)
self.__ui.stepLineEdit.textChanged.connect(
self._onStepChanged)
self.__ui.monoRadioButton.clicked.connect(
self._monoLevelMode)
self.__ui.redRadioButton.clicked.connect(
self._redLevelMode)
self.__ui.blueRadioButton.clicked.connect(
self._blueLevelMode)
self.__ui.greenRadioButton.clicked.connect(
self._greenLevelMode)
self.__ui.autofactorLineEdit.textChanged.connect(
self._onAutoFactorChanged)
self.__connectHistogram()
self.__histograms[0].show()
self.__histograms[1].hide()
self.__histograms[2].hide()
# print(self.__histogram.isVisible())
self.updateLevels(0.1, 1.0)
self.__connectMinMax()
self.__levelmode = "mono"
def _updateLevelLabels(self, dchl=None):
""" update level labels
:param dchl: channel id
:type dchl: :obj:`int`
"""
if dchl is None:
dchl = self.__dchl
if _PQGVER >= 1100:
if dchl == 1:
self.__ui.minLabel.setText("Red Min. value:")
self.__ui.maxLabel.setText("Red Max. value:")
elif dchl == 2:
self.__ui.minLabel.setText("Green Min. value:")
self.__ui.maxLabel.setText("Green Max. value:")
elif dchl == 3:
self.__ui.minLabel.setText("Blue Min. value:")
self.__ui.maxLabel.setText("Blue Max. value:")
else:
self.__ui.minLabel.setText("Minimum value:")
self.__ui.maxLabel.setText("Maximum value:")
@QtCore.pyqtSlot(bool)
def _monoLevelMode(self, status):
""" update to the mono level mode
:param status: button status
:type status: :obj:`bool`
"""
if self.__gradientcolors:
if status:
self.__dchl = 0
self._updateLevelLabels()
if not self.__histo:
self.__histogram.switchLevelMode('mono')
self.__levelmode = "mono"
self.updateLevels(self.__minval, self.__maxval)
if self.__histogram:
self.__histogram.switchLevelMode('mono')
elif _PQGVER >= 1100:
if status:
self.__dchl = 0
# if not self.__ui.gradientLabel.isVisible():
self._updateLevelLabels()
if not self.__histo:
self.__histogram.switchLevelMode('mono')
self.__levelmode = "mono"
self.updateLevels(self.__minval, self.__maxval)
if self.__histogram:
self.__histogram.switchLevelMode('mono')
self.__histogram.gradient.hide()
@QtCore.pyqtSlot(bool)
def _redLevelMode(self, status):
""" update to the red level mode
:param status: button status
:type status: :obj:`bool`
"""
if self.__gradientcolors:
if status:
self.__dchl = 1
self._updateLevelLabels()
if not self.__histo:
self.__histogram.switchLevelMode('mono')
self.__levelmode = "rgba"
if self.__channels is not None:
while len(self.__channels) < 1:
self.__channels.append(
(self.__minval, self.__maxval))
self.updateLevels(None, None, self.__channels)
if self.__histogram:
self.__histogram.switchLevelMode('mono')
self.setGradient(self.__histograms[0].gradient.name, 0)
elif _PQGVER >= 1100:
if status:
self.__dchl = 1
# if self.__ui.gradientLabel.isVisible():
self._updateLevelLabels()
if not self.__histo:
self.__histogram.switchLevelMode('rgba')
self.__levelmode = "rgba"
if self.__channels is not None:
while len(self.__channels) < 1:
self.__channels.append(
(self.__minval, self.__maxval))
self.updateLevels(None, None, self.__channels)
if self.__histogram:
self.__histogram.switchLevelMode('rgba')
@QtCore.pyqtSlot(bool)
def _greenLevelMode(self, status):
""" update to the green level mode
:param status: button status
:type status: :obj:`bool`
"""
if self.__gradientcolors:
if status:
self.__dchl = 2
self._updateLevelLabels()
if not self.__histo:
self.__histogram.switchLevelMode('mono')
self.__levelmode = "rgba"
if self.__channels is not None:
while len(self.__channels) < 2:
self.__channels.append(
(self.__minval, self.__maxval))
self.updateLevels(None, None, self.__channels)
if self.__histogram:
self.__histogram.switchLevelMode('mono')
self.setGradient(self.__histograms[1].gradient.name, 1)
elif _PQGVER >= 1100:
if status:
self.__dchl = 2
self._updateLevelLabels()
# if self.__ui.gradientLabel.isVisible():
if not self.__histo:
self.__histogram.switchLevelMode('rgba')
self.__levelmode = "rgba"
if self.__channels is not None:
while len(self.__channels) < 2:
self.__channels.append(
(self.__minval, self.__maxval))
self.updateLevels(None, None, self.__channels)
if self.__histogram:
self.__histogram.switchLevelMode('rgba')
@QtCore.pyqtSlot(bool)
def _blueLevelMode(self, status):
""" update to the blue level mode
:param status: button status
:type status: :obj:`bool`
"""
if self.__gradientcolors:
if status:
self.__dchl = 3
self._updateLevelLabels()
if not self.__histo:
self.__histogram.switchLevelMode('mono')
self.__levelmode = "rgba"
if self.__channels is not None:
while len(self.__channels) < 3:
self.__channels.append(
(self.__minval, self.__maxval))
self.updateLevels(None, None, self.__channels)
if self.__histogram:
self.__histogram.switchLevelMode('mono')
self.setGradient(self.__histograms[2].gradient.name, 2)
elif _PQGVER >= 1100:
if status:
self.__dchl = 3
# if self.__ui.gradientLabel.isVisible():
self._updateLevelLabels()
if not self.__histo:
self.__histogram.switchLevelMode('rgba')
self.__levelmode = "rgba"
if self.__channels is not None:
while len(self.__channels) < 3:
self.__channels.append(
(self.__minval, self.__maxval))
self.updateLevels(None, None, self.__channels)
if self.__histogram:
self.__histogram.switchLevelMode('rgba')
def __connectHistogram(self, iid=0):
""" create histogram object and connect its signals
:param iid: image id
:type iid: :obj:`int`
"""
if not self.__histconnect[iid]:
self.__histograms[iid].item.sigLevelsChanged.connect(
self.__onLevelsSlots[iid])
self.__histograms[iid].sigNameChanged.connect(
self.__changeGradientSlots[iid])
self.__histograms[iid].saveGradientRequested.connect(
self.__saveGradientSlots[iid])
self.__histograms[iid].removeGradientRequested.connect(
self.__removeGradientSlots[iid])
self.__histconnect[iid] = True
# else:
# print("WARN: trying to connect HIS", iid)
def __disconnectHistogram(self, iid=0):
""" remove histogram object and disconnect its signals
:param iid: image id
:type iid: :obj:`int`
"""
if self.__histconnect[iid]:
self.__histograms[iid].item.sigLevelsChanged.disconnect(
self.__onLevelsSlots[iid])
self.__histograms[iid].sigNameChanged.disconnect(
self.__changeGradientSlots[iid])
self.__histograms[iid].saveGradientRequested.disconnect(
self.__saveGradientSlots[iid])
self.__histograms[iid].removeGradientRequested.disconnect(
self.__removeGradientSlots[iid])
self.__histconnect[iid] = False
# else:
# print("WARN: trying to disconnect HIS", iid)
def __connectHistograms(self):
""" create histogram object and connect its signals
"""
for iid in range(3):
if self.__histograms[iid].isVisible():
self.__connectHistogram(iid)
def __disconnectHistograms(self):
""" remove histogram object and disconnect its signals
"""
for iid in range(3):
if self.__histograms[iid].isVisible():
self.__disconnectHistogram(iid)
[docs] def updateCustomGradients(self, gradients):
self.__customgradients = dict(gradients)
for name, gradient in self.__customgradients.items():
_pg.graphicsItems.GradientEditorItem.Gradients[name] = gradient
self._addGradientItem(name)
for iid in range(3):
self.__histograms[iid].resetGradient()
self._updateGradient()
def __connectMinMax(self):
""" connects mix/max spinboxes
"""
self.__ui.minDoubleSpinBox.valueChanged.connect(self._onMinMaxChanged)
self.__ui.maxDoubleSpinBox.valueChanged.connect(self._onMinMaxChanged)
def __disconnectMinMax(self):
""" disconnects mix/max spinboxes
"""
self.__ui.minDoubleSpinBox.valueChanged.disconnect(
self._onMinMaxChanged)
self.__ui.maxDoubleSpinBox.valueChanged.disconnect(
self._onMinMaxChanged)
@QtCore.pyqtSlot(float)
def _onMinMaxChanged(self, _):
""" sets region of the histograms
"""
if not self.__auto:
try:
self.__disconnectMinMax()
if self.__histo:
self.__disconnectHistogram()
self._checkAndEmit()
if self.__histo:
lowlim = self.__ui.minDoubleSpinBox.value()
uplim = self.__ui.maxDoubleSpinBox.value()
if self.__gradientcolors and self.__rgbstatus:
for iid in range(3):
if not self.__dchl or iid + 1 == self.__dchl:
self.__histograms[iid].region.setRegion(
[lowlim, uplim])
else:
if self.__dchl == 0:
self.__histogram.region.setRegion([lowlim, uplim])
else:
if hasattr(self.__histogram, "regions"):
self.__histogram.regions[self.__dchl].\
setRegion([lowlim, uplim])
finally:
self.__connectMinMax()
if self.__histo:
self.__connectHistogram()
else:
lowlim = self.__ui.minDoubleSpinBox.value()
uplim = self.__ui.maxDoubleSpinBox.value()
if self.__dchl == 0:
self.minLevelChanged.emit(lowlim)
self.maxLevelChanged.emit(uplim)
else:
if self.__channels is None:
self.__channels = []
while len(self.__channels) < self.__dchl:
self.__channels.append((lowlim, uplim))
self.__channels[self.__dchl - 1] = (lowlim, uplim)
self.channelLevelsChanged.emit()
[docs] def changeView(self, showhistogram=None, showlevels=None,
showadd=None):
""" shows or hides the histogram widget
:param showhistogram: if histogram should be shown
:type showhistogram: :obj:`bool`
:param showlevels: if levels should be shown
:type showlevels: :obj:`bool`
:param showadd: if additional histogram should be shown
:type showadd: :obj:`bool`
"""
if showhistogram is True and self.__histo is False:
if showhistogram is not None:
self.__histo = showhistogram
self.showHistograms(True)
elif showhistogram is False and self.__histo is True:
if showhistogram is not None:
self.__histo = showhistogram
self.showHistograms(False)
if showadd is True:
self.__ui.binsComboBox.show()
self.__ui.binsLabel.show()
self.__ui.stepLineEdit.show()
self.__ui.stepLabel.show()
elif showadd is False:
self.__ui.binsComboBox.hide()
self.__ui.binsLabel.hide()
self.__ui.stepLineEdit.hide()
self.__ui.stepLabel.hide()
if showlevels is True and self.__levels is False:
self.__ui.gradientLabel.show()
self.__ui.gradientComboBox.show()
self.__ui.scalingLabel.show()
self.__ui.autoLevelsCheckBox.show()
self.__ui.autofactorLineEdit.show()
self.__ui.autofactorLabel.show()
self.__ui.maxDoubleSpinBox.show()
self.__ui.maxLabel.show()
self.__ui.minDoubleSpinBox.show()
self.__ui.minLabel.show()
self.__ui.scalingLabel.show()
elif showlevels is False and self.__levels is True:
self.__ui.gradientLabel.hide()
self.__ui.gradientComboBox.hide()
self.__ui.scalingLabel.hide()
self.__ui.autoLevelsCheckBox.hide()
self.__ui.autofactorLineEdit.hide()
self.__ui.autofactorLabel.hide()
self.__ui.maxDoubleSpinBox.hide()
self.__ui.maxLabel.hide()
self.__ui.minDoubleSpinBox.hide()
self.__ui.minLabel.hide()
self.__ui.scalingLabel.hide()
if showlevels is not None:
self.__levels = showlevels
if not self.__histo and not self.__levels:
self.hide()
else:
self.show()
[docs] def isAutoLevel(self):
""" returns if automatics levels are enabled
:returns: if automatics levels are enabled
:rtype: :obj:`bool`
"""
return self.__auto
[docs] @QtCore.pyqtSlot(int)
def setAutoLevels(self, auto):
"""enables or disables automatic levels
:param auto: if automatics levels to be set
:type auto: :obj:`bool` or :obj:`int`
"""
self.__ui.autoLevelsCheckBox.setChecked(
2 if auto else 0)
self._onAutoLevelsChanged(auto)
@QtCore.pyqtSlot(str)
def _onStepChanged(self, step):
"""sets step for automatic levels
:param step: if automatics levels to be set
:type step: :obj:`str`
"""
try:
fstep = float(step)
if fstep <= 0:
fstep = None
self.__ui.stepLineEdit.setText("")
for histogram in self.__histograms:
histogram.setStep(fstep)
except Exception:
for histogram in self.__histograms:
histogram.setStep(None)
self.__ui.stepLineEdit.setText("")
self.levelsChanged.emit()
@QtCore.pyqtSlot(str)
def _onAutoFactorChanged(self, factor):
"""sets factor for automatic levels
:param factor: if automatics levels to be set
:type factor: :obj:`str`
"""
try:
ffactor = float(factor)
if ffactor < 0:
ffactor = 0
self.__ui.autofactorLineEdit.setText("0")
elif ffactor > 100:
ffactor = 100
self.__ui.autofactorLineEdit.setText("100")
for histogram in self.__histograms:
histogram.setAutoFactor(ffactor)
self.autoLevelsChanged.emit(1)
except Exception:
for histogram in self.__histograms:
histogram.setAutoFactor(None)
self.autoLevelsChanged.emit(2 if self.__auto else 0)
self.levelsChanged.emit()
@QtCore.pyqtSlot(int)
def _onAutoLevelsChanged(self, auto):
"""enables or disables automatic levels
:param auto: if automatics levels to be set
:type auto: :obj:`bool` or :obj:`int`
"""
if auto:
self.__auto = True
self.__hideControls()
factor = str(self.__ui.autofactorLineEdit.text())
try:
ffactor = float(factor)
if ffactor < 0:
ffactor = 0
self.__ui.autofactorLineEdit.setText("0")
elif ffactor > 100:
ffactor = 100
self.__ui.autofactorLineEdit.setText("100")
for histogram in self.__histograms:
histogram.setAutoFactor(ffactor)
except Exception:
for histogram in self.__histograms:
histogram.setAutoFactor(None)
self.autoLevelsChanged.emit(2)
else:
for histogram in self.__histograms:
histogram.setAutoFactor(None)
self.__auto = False
self.__showControls()
self.autoLevelsChanged.emit(0)
self._checkAndEmit()
self.levelsChanged.emit()
@QtCore.pyqtSlot(object)
def _onLevelsChanged1(self, histogram=None):
""" set min/max level spinboxes according to histogram
:param histogram: intensity histogram object
:type histogram: :class: `lavuelib.histogramWidget.HistogramHLUTWidget`
"""
if histogram is None:
histogram = self.__histograms[1]
self._onLevelsChanged(histogram)
@QtCore.pyqtSlot(object)
def _onLevelsChanged2(self, histogram=None):
""" set min/max level spinboxes according to histogram
:param histogram: intensity histogram object
:type histogram: :class: `lavuelib.histogramWidget.HistogramHLUTWidget`
"""
if histogram is None:
histogram = self.__histograms[2]
self._onLevelsChanged(histogram)
@QtCore.pyqtSlot(object)
def _onLevelsChanged(self, histogram=None):
""" set min/max level spinboxes according to histogram
:param histogram: intensity histogram object
:type histogram: :class: `lavuelib.histogramWidget.HistogramHLUTWidget`
"""
if histogram is None:
histogram = self.__histogram
levels = histogram.region.getRegion()
lowlim = self.__minval
uplim = self.__maxval
changed = False
try:
# self.__disconnectMinMax()
# self.__disconnectHistogram()
if levels[0] != lowlim or levels[1] != uplim:
lowlim = levels[0]
uplim = levels[1]
# refresh widget
changed = True
self.__minval = levels[0]
self.__maxval = levels[1]
if self.__dchl == 0:
self.__ui.minDoubleSpinBox.setValue(levels[0])
self.__ui.maxDoubleSpinBox.setValue(levels[1])
if hasattr(self.__histogram, "regions") and \
self.__channels is not None:
while len(self.__channels) < 3:
self.__channels.append((self.__minval, self.__maxval))
added = True
for i in range(1, 4):
if self.__gradientcolors and self.__rgbstatus:
levels = self.__histograms[i - 1].region.getRegion()
else:
levels = histogram.regions[i].getRegion()
lowlim = self.__channels[i - 1][0]
uplim = self.__channels[i - 1][1]
added = False
if levels[0] != lowlim or levels[1] != uplim or added:
lowlim = levels[0]
uplim = levels[1]
# refresh widget
changed = True
self.__channels[i - 1] = levels[0], levels[1]
if self.__dchl > 0:
self.__ui.minDoubleSpinBox.setValue(
self.__channels[self.__dchl - 1][0])
self.__ui.maxDoubleSpinBox.setValue(
self.__channels[self.__dchl - 1][1])
finally:
# self.__connectMinMax()
# self.__connectHistogram()
pass
if not self.__auto and changed:
self._checkLevels()
self._emitLevels()
@QtCore.pyqtSlot()
def _checkLevels(self):
""" checks if the minimum value is actually smaller than the maximum
"""
minval = self.__ui.minDoubleSpinBox.value()
maxval = self.__ui.maxDoubleSpinBox.value()
if maxval >= 10e+20:
maxval = self.__maxval
if minval >= 10e+20:
minval = self.__minval
if maxval - minval < 0:
if minval >= 0.0:
minval = maxval
else:
maxval = minval
self.__ui.minDoubleSpinBox.setValue(minval)
self.__ui.maxDoubleSpinBox.setValue(maxval)
@QtCore.pyqtSlot()
def _emitLevels(self):
""" checks if the minimum value is actually smaller than the maximum
"""
self.minLevelChanged.emit(self.__minval)
self.maxLevelChanged.emit(self.__maxval)
self.channelLevelsChanged.emit()
@QtCore.pyqtSlot()
def _updateAndEmit(self):
lowlim = self.__ui.minDoubleSpinBox.value()
uplim = self.__ui.maxDoubleSpinBox.value()
if self.__dchl == 0:
self.__minval = lowlim
self.__maxval = uplim
self.minLevelChanged.emit(self.__minval)
self.maxLevelChanged.emit(self.__maxval)
else:
if self.__channels is None:
self.__channels = []
while len(self.__channels) < self.__dchl:
self.__channels.append((lowlim, uplim))
self.__channels[self.__dchl - 1] = (lowlim, uplim)
self.channelLevelsChanged.emit()
@QtCore.pyqtSlot()
def _checkAndEmit(self):
""" checks if the minimum value is actually smaller than the maximum
"""
self._checkLevels()
self._updateAndEmit()
[docs] def updateLevels(self, lowlim, uplim, channels=None, signals=True,
force=False):
""" set min/max level spinboxes and histogram from the parameters
:param lowlim: minimum intensity value
:type lowlim: :obj:`float`
:param uplim: maximum intensity value
:type uplim: :obj:`float`
:param signal: dont disconnect signals
:type signal: :obj:`bool`
:param force: force update histogram
:type force: :obj:`bool`
"""
try:
if not signals:
self.__disconnectMinMax()
if lowlim is not None:
self.__minval = lowlim
if self.__dchl == 0:
self.__ui.minDoubleSpinBox.setValue(lowlim)
else:
lowlim = self.__minval
if uplim is not None:
self.__maxval = uplim
if self.__dchl == 0:
self.__ui.maxDoubleSpinBox.setValue(uplim)
else:
uplim = self.__maxval
if channels is not None:
self.__channels = channels
if self.__dchl != 0 and len(self.__channels) >= self.__dchl:
ch = self.__channels[self.__dchl - 1]
if ch is not None:
chl, chh = ch
if chl is not None:
self.__ui.minDoubleSpinBox.setValue(chl)
if chh is not None:
self.__ui.maxDoubleSpinBox.setValue(chh)
finally:
if not signals:
self.__connectMinMax()
if self.__histo and (self.__auto or force):
levels = self.__histogram.region.getRegion()
update = False
try:
if self.__histo:
if self.__gradientcolors and self.__rgbstatus:
self.__disconnectHistograms()
else:
self.__disconnectHistogram()
if levels[0] != lowlim or levels[1] != uplim or force:
if self.__histo:
self.__histogram.region.setRegion([lowlim, uplim])
if hasattr(self.__histogram, "regions"):
if channels is not None and self.__histo:
for i, ch in enumerate(self.__channels):
if ch is not None:
lowlim, uplim = ch
if lowlim is not None and uplim is not None:
if self.__gradientcolors and \
self.__rgbstatus:
levels = self.__histograms[i].region\
.getRegion()
if levels[0] != lowlim \
or levels[1] != uplim or force:
self.__histograms[i].region.\
setRegion([lowlim, uplim])
else:
levels = self.__histogram.\
regions[i + 1].getRegion()
if levels[0] != lowlim \
or levels[1] != uplim or force:
self.__histogram.regions[i + 1].\
setRegion([lowlim, uplim])
finally:
if self.__histo:
if self.__gradientcolors and self.__rgbstatus:
self.__connectHistograms()
else:
self.__connectHistogram()
if update:
self._onLevelsChanged()
self._emitLevels()
[docs] def updateAutoLevels(self, lowlim, uplim, channels=None):
""" set min/max level spinboxes and histogram from the parameters
:param lowlim: minimum intensity value
:type lowlim: :obj:`float`
:param uplim: maximum intensity value
:type uplim: :obj:`float`
"""
if channels is not None:
self.__channels = channels
try:
factor = str(self.__ui.autofactorLineEdit.text())
float(factor)
channels = None
llim = None
ulim = None
if self.__histo:
llim, ulim = self.__histogram.getFactorRegion()
if self.__gradientcolors and self.__rgbstatus:
channels = [(llim, ulim)]
channels.append(self.__histograms[1].getFactorRegion())
channels.append(self.__histograms[2].getFactorRegion())
else:
channels = self.__histogram.getChannelFactorRegion()
if channels is not None:
self.__channels = channels
if llim is not None and ulim is not None:
self.updateLevels(llim, ulim)
self.minLevelChanged.emit(llim)
self.maxLevelChanged.emit(ulim)
else:
self.updateLevels(lowlim, uplim, channels)
if channels is not None:
self.channelLevelsChanged.emit()
except Exception:
self.updateLevels(lowlim, uplim, channels)
def __hideControls(self):
""" disables spinboxes
"""
self.__ui.minDoubleSpinBox.setEnabled(False)
self.__ui.maxDoubleSpinBox.setEnabled(False)
self.__ui.autofactorLineEdit.setEnabled(True)
self.__ui.autofactorLabel.setEnabled(True)
def __showControls(self):
""" enables spinboxes
"""
self.__ui.minDoubleSpinBox.setEnabled(True)
self.__ui.maxDoubleSpinBox.setEnabled(True)
self.__ui.autofactorLineEdit.setEnabled(False)
self.__ui.autofactorLabel.setEnabled(False)
def _tologscale(self, lowlim, uplim):
""" change scaling to log scale
:param lowlim: minimum intensity value
:type lowlim: :obj:`float`
:param uplim: maximum intensity value
:type uplim: :obj:`float`
:returns: (minimum intensity value, maximum intensity value)
in log scale
:rtype: (:obj:`float`, :obj:`float`)
"""
if self.__scaling == "linear":
lowlim = math.log10(
lowlim or 10e-3) if lowlim > 0 else -2
uplim = math.log10(
uplim or 10e-3) if uplim > 0 else -2
elif self.__scaling == "sqrt":
lowlim = math.log10(
lowlim * lowlim or 10e-3) if lowlim > 0 else -2
uplim = math.log10(
uplim * uplim or 10e-3) if uplim > 0 else -2
return lowlim, uplim
def _tolinearscale(self, lowlim, uplim):
""" change scaling to linear scale
:param lowlim: minimum intensity value
:type lowlim: :obj:`float`
:param uplim: maximum intensity value
:type uplim: :obj:`float`
:returns: (minimum intensity value, maximum intensity value)
in linear scale
:rtype: (:obj:`float`, :obj:`float`)
"""
if self.__scaling == "log":
lowlim = math.pow(10, lowlim)
uplim = math.pow(10, uplim)
elif self.__scaling == "sqrt":
lowlim = lowlim * lowlim
uplim = uplim * uplim
return lowlim, uplim
def _tosqrtscale(self, lowlim, uplim):
""" change scaling to sqrt scale
:param lowlim: minimum intensity value
:type lowlim: :obj:`float`
:param uplim: maximum intensity value
:type uplim: :obj:`float`
:returns: (minimum intensity value, maximum intensity value)
in sqrt scale
:rtype: (:obj:`float`, :obj:`float`)
"""
if self.__scaling == "linear":
lowlim = math.sqrt(max(lowlim, 0))
uplim = math.sqrt(max(uplim, 0))
elif self.__scaling == "log":
lowlim = math.sqrt(max(math.pow(10, lowlim), 0))
uplim = math.sqrt(max(math.pow(10, uplim), 0))
return lowlim, uplim
[docs] @QtCore.pyqtSlot(str)
def setRGBChannels(self, rgbchannels):
""" rgb channel indexes
:param rgbchannels: rgb channel indexes
:type rgbchannels: :obj:`tuple` <:obj:`int`>
"""
if self.__rgbchannels != rgbchannels:
self.__rgbchannels = rgbchannels
self.showHistograms(self.__rgbstatus)
[docs] @QtCore.pyqtSlot(str)
def setScalingLabel(self, scalingtype):
""" sets scaling label
:param scalingtype: scaling type, i.e. log, linear, sqrt
:type scalingtype: :obj:`str`
"""
lowlim = float(self.__ui.minDoubleSpinBox.value())
uplim = float(self.__ui.maxDoubleSpinBox.value())
scalefun = {
"log": self._tologscale,
"linear": self._tolinearscale,
"sqrt": self._tosqrtscale,
}
scalelabel = {
"log": "log scale!",
"linear": "linear scale!",
"sqrt": "sqrt scale!",
}
if scalingtype in scalefun.keys():
sfun = scalefun[scalingtype]
slabel = scalelabel[scalingtype]
if scalingtype != self.__scaling:
self.__ui.scalingLabel.setText(slabel)
if not self.__auto:
lowlim, uplim = sfun(lowlim, uplim)
self.__minval, self.__maxval = sfun(
self.__minval, self.__maxval)
if self.__channels:
for i, ch in enumerate(self.__channels):
if ch is not None:
if ch[0] is not None and ch[1] is not None:
self.__channels[i] = sfun(ch[0], ch[1])
# self.__ui.minDoubleSpinBox.setValue(lowlim)
# self.__ui.maxDoubleSpinBox.setValue(uplim)
if scalingtype != self.__scaling:
self.__scaling = scalingtype
if not self.__auto:
if self.__histo:
try:
self.__disconnectHistogram()
self.__histogram.region.setRegion(
[self.__minval, self.__maxval])
if hasattr(self.__histogram, "regions"):
if self.__channels is not None:
for i, ch in enumerate(self.__channels):
if ch is not None:
lowlim, uplim = ch
if lowlim is not None \
and uplim is not None:
self.__histogram.regions[i + 1].\
setRegion([lowlim, uplim])
finally:
self.__connectHistogram()
self.updateLevels(
self.__minval, self.__maxval, self.__channels,
signals=False)
# self._onLevelsChanged()
else:
self.__ui.minDoubleSpinBox.setValue(lowlim)
self.__ui.maxDoubleSpinBox.setValue(uplim)
[docs] @QtCore.pyqtSlot(bool)
def setrgb(self, status=True):
""" sets RGB on/off
:param status: True for on and False for off
:type status: :obj:`bool`
"""
self.__histogram.setRGB(status and not self.__gradientcolors)
if status and self.__dchl and not self.__gradientcolors:
mode = 'rgba'
lmode = 'rgba'
dchl = self.__dchl
elif status and self.__dchl and self.__gradientcolors:
mode = 'mono'
lmode = 'rgba'
dchl = self.__dchl
else:
mode = 'mono'
lmode = 'mono'
dchl = 0
switch = False
if self.__rgbstatus != status:
switch = True
self.__rgbstatus = status
self.__histogram.switchLevelMode(mode)
self.__levelmode = lmode
self._updateLevelLabels(dchl)
self.showGradient(not status or self.__gradientcolors)
self.showHistograms(status)
if _PQGVER >= 1100 or self.__gradientcolors:
self.showChannels(status)
if switch:
self.gradientChanged.emit()
[docs] def showHistograms(self, status=True):
""" show/hide gradient widget
:param status: show gradient flag
:type status: :obj:`bool`
"""
if self.__gradientcolors and status and self.__histo:
for iid in range(0, 3):
if self.__rgbchannels[iid] != -1:
if not self.__histograms[iid].isVisible():
self.__connectHistogram(iid)
self.__histograms[iid].show()
self.__histograms[iid].fillHistogram(True)
else:
if self.__histograms[iid].isVisible():
self.__histograms[iid].hide()
self.__histograms[iid].fillHistogram(False)
self.__disconnectHistogram(iid)
else:
if self.__histo:
if not self.__histograms[0].isVisible():
self.__connectHistogram()
self.__histograms[0].show()
self.__histograms[0].fillHistogram(True)
else:
if self.__histograms[0].isVisible():
self.__histograms[0].hide()
self.__histograms[0].fillHistogram(False)
self.__disconnectHistogram()
if self.__histograms[1].isVisible():
self.__histograms[1].hide()
self.__histograms[1].fillHistogram(False)
self.__disconnectHistogram(1)
if self.__histograms[2].isVisible():
self.__histograms[2].hide()
self.__histograms[2].fillHistogram(False)
self.__disconnectHistogram(2)
[docs] def showGradient(self, status=True):
""" show/hide gradient widget
:param status: show gradient flag
:type status: :obj:`bool`
"""
if status and not self.__ui.gradientComboBox.isVisible():
self.__ui.gradientComboBox.show()
self.__ui.gradientLabel.show()
self.__histogram.gradient.show()
# self.setGradient(self.gradient())
self._updateGradient()
elif not status and self.__ui.gradientComboBox.isVisible():
self.__ui.gradientComboBox.hide()
self.__ui.gradientLabel.hide()
self.__histogram.gradient.hide()
[docs] def showChannels(self, status=True):
""" show/hide channel widget
:param status: show channel flag
:type status: :obj:`bool`
"""
if status:
self.__ui.channelWidget.show()
else:
self.__ui.channelWidget.hide()
# self.__ui.monoRadioButton.setChecked(2)
[docs] @QtCore.pyqtSlot(int)
def setBins(self, index):
""" sets bins edges algorithm for histogram
:param index: bins edges algorithm index for histogram
:type index: :obj:`int`
"""
for histogram in self.__histograms:
histogram.setBins(
self.__ui.binsComboBox.itemText(index))
self.levelsChanged.emit()
[docs] def gradient(self):
""" provides the current color gradient
:returns: gradient name
:rtype: :obj:`str`
"""
if self.__gradientcolors and self.__rgbstatus:
return str(";".join(
[his.gradient.name for his in self.__histograms]))
else:
return str(self.__ui.gradientComboBox.currentText())
@QtCore.pyqtSlot()
def _saveGradient1(self):
""" saves the current gradient
"""
self._saveGradient(1)
@QtCore.pyqtSlot()
def _saveGradient2(self):
""" saves the current gradient
"""
self._saveGradient(2)
@QtCore.pyqtSlot()
def _saveGradient(self, iid=0):
""" saves the current gradient
:param iid: image id
:type iid: :obj:`int`
"""
graddlg = gradientDialog.GradientDialog()
graddlg.protectednames = list(
set(_pg.graphicsItems.GradientEditorItem.Gradients.keys()) -
set(self.__customgradients.keys())
)
graddlg.createGUI()
if graddlg.exec_():
if graddlg.name:
name = graddlg.name
gradient = self.__histograms[iid].gradient.getCurrentGradient()
self.__customgradients[name] = gradient
_pg.graphicsItems.GradientEditorItem.Gradients[name] = gradient
self._addGradientItem(name)
for i, histogram in enumerate(self.__histograms):
lname = histogram.gradient.name
histogram.resetGradient()
if iid == i:
lname = name
self.setGradient(lname, i)
self._updateGradient()
self.__settings.setCustomGradients(self.__customgradients)
self.storeSettingsRequested.emit()
@QtCore.pyqtSlot()
def _removeGradient1(self):
""" removes the current gradient
"""
self._removeGradient(1)
@QtCore.pyqtSlot()
def _removeGradient2(self):
""" removes the current gradient
"""
self._removeGradient(2)
@QtCore.pyqtSlot()
def _removeGradient(self, iid=0):
""" removes the current gradient
:param iid: image id
:type iid: :obj:`int`
"""
name = self.__histograms[iid].gradient.name
if name in self.__customgradients:
if QtWidgets.QMessageBox.question(
self, "Removing Label",
'Would you like to remove "%s"" ?' %
(name),
QtWidgets.QMessageBox.Yes | QtWidgets.QMessageBox.No,
QtWidgets.QMessageBox.Yes) == QtWidgets.QMessageBox.No:
return False
self.__customgradients.pop(name)
_pg.graphicsItems.GradientEditorItem.Gradients.pop(name)
self._removeGradientItem(name)
for i, histogram in enumerate(self.__histograms):
lname = histogram.gradient.name
histogram.resetGradient()
if name != lname:
self.setGradient(lname, i)
self.__settings.setCustomGradients(self.__customgradients)
self.storeSettingsRequested.emit()
else:
messageBox.MessageBox.warning(
self, "Gradient: '%s' cannot be removed" % str(name),
None, None)
def _addGradientItem(self, name):
""" sets gradient
:param name gradient name
:type name: :obj:`str`
"""
cid = self.__ui.gradientComboBox.findText(name)
if cid < 0:
self.__ui.gradientComboBox.addItem(name)
def _removeGradientItem(self, name):
""" removes gradient
:param name gradient name
:type name: :obj:`str`
"""
cid = self.__ui.gradientComboBox.findText(name)
if cid > -1:
self.__ui.gradientComboBox.removeItem(cid)
self._updateGradient(0)
else:
logger.error(
"_removeGradientItem: "
"Error in _removeGradientItem for %s" % name)
# print("Error %s" % name)
[docs] def setGradient(self, name, iid=None):
""" sets gradient
:param name gradient name
:type name: :obj:`str`
:param iid: image id
:type iid: :obj:`int`
"""
if iid is not None:
self.__histograms[iid].setGradientByName(name)
self.__changeGradientSlots[iid](name)
else:
names = name.split(";")
for i, nm in enumerate(names):
if i > 2:
break
self.__histograms[i].setGradientByName(nm)
if i + 1 == self.__dchl:
self.__changeGradientSlots[i](nm)
@QtCore.pyqtSlot(int)
def _updateGradient(self, index=-1):
""" updates gradient in the intensity histogram
:param index: gradient index
:type index: :obj:`int`
"""
if index == -1:
name = self.__ui.gradientComboBox.currentText()
index = self.__ui.gradientComboBox.findText(name)
# if self.__gradientcolors and self.__rgbstatus:
if self.__gradientcolors and self.__rgbstatus:
if not self.__dchl:
for iid in range(3):
self.__histograms[iid].setGradientByName(
self.__ui.gradientComboBox.itemText(index))
else:
self.__histograms[self.__dchl - 1].setGradientByName(
self.__ui.gradientComboBox.itemText(index))
else:
self.__histogram.setGradientByName(
self.__ui.gradientComboBox.itemText(index))
self.gradientChanged.emit()
@QtCore.pyqtSlot(str)
def _changeGradient0(self, name):
""" updates the gradient combobox
:param name: gradient name
:type name: :obj:`str`
"""
self._changeGradient(name, 0)
@QtCore.pyqtSlot(str)
def _changeGradient1(self, name):
""" updates the gradient combobox
:param name: gradient name
:type name: :obj:`str`
"""
self._changeGradient(name, 1)
@QtCore.pyqtSlot(str)
def _changeGradient2(self, name):
""" updates the gradient combobox
:param name: gradient name
:type name: :obj:`str`
"""
self._changeGradient(name, 2)
@QtCore.pyqtSlot(str)
def _changeGradient(self, name, iid=0):
""" updates the gradient combobox
:param name: gradient name
:type name: :obj:`str`
:param iid: image id
:type iid: :obj:`int`
"""
text = self.__ui.gradientComboBox.currentText()
if text != name:
cid = self.__ui.gradientComboBox.findText(name)
if self.__gradientcolors and self.__rgbstatus:
self.__updateRadio(iid + 1)
if cid > -1:
if self.__gradientcolors and self.__rgbstatus or iid == 0:
self.__ui.gradientComboBox.setCurrentIndex(cid)
else:
logger.error(
"LevelsGroupBox.changeGradient: "
"Error in _changeGradient for %s" % name)
# print("Error %s" % name)
self.gradientChanged.emit()
[docs] def updateHistoImage(self, autoLevel=None):
""" executes imageChanged of histogram with the givel autoLevel
:param autoLevel: if automatics levels to be set
:type autoLevel: :obj:`bool`
"""
auto = autoLevel if autoLevel is not None else self.__auto
if self.__gradientcolors and self.__rgbstatus:
for histogram in self.__histograms:
histogram.imageChanged(autoLevel=auto)
else:
self.__histogram.imageChanged(autoLevel=auto)
[docs] def setImageItem(self, image, iid=0):
""" sets histogram image
:param image: histogram image
:type image: :class:`pyqtgraph.graphicsItems.ImageItem.ImageItem`
:param iid: image id
:type iid: :obj:`int`
"""
self.__histograms[iid].setImageItem(image)
[docs] def levels(self):
""" provides levels from configuration string
:returns: configuration string: lowlim,uplim or
lowlim,uplim;c1l,c1u;c2l,c2u;c3l,c3u
:rtype: :obj:`str`
"""
lowlim = self.__minval
uplim = self.__maxval
main = "%s,%s" % (lowlim, uplim)
chl = ""
chw = ""
if self.__channels:
chl = ";".join(
["%s,%s" % (ch[0], ch[1]) for ch in self.__channels])
chl = ";%s" % chl
if self.__dchl in [1, 2, 3]:
chw = ";%s" % ({1: "red", 2: "green", 3: "blue"}[self.__dchl])
return "%s%s%s" % (main, chl, chw)
[docs] def channelLevels(self):
""" provides levels from configuration string
:returns: channel levels
:rtype: :obj:`str`
"""
if self.__channels is not None:
return list(self.__channels)
[docs] def setLevels(self, cnflevels):
""" set levels from configuration string
:param cnflevels: configuration string: lowlim,uplim or
lowlim,uplim;lowred,upred;lowgreen,upgreen;lowblue,upblue
:type cnflevels: :obj:`str`
"""
dchl = 0
channels = None
if cnflevels:
clst = cnflevels.split(";")
if clst[-1].startswith("r") or clst[-1].startswith("R"):
dchl = 1
clst.pop()
elif clst[-1].startswith("g") or clst[-1].startswith("G"):
dchl = 2
clst.pop()
elif clst[-1].startswith("b") or clst[-1].startswith("B"):
dchl = 3
clst.pop()
channels = []
if clst:
self.__ui.autoLevelsCheckBox.setChecked(False)
self._onAutoLevelsChanged(0)
for ch in clst[1:]:
llst = ch.split(",")
lmin = None
lmax = None
try:
smin = llst[0]
if smin.startswith("m"):
smin = "-" + smin[1:]
lmin = float(smin)
except Exception as e:
logger.warning(str(e))
# print(str(e))
try:
smax = llst[1]
if smax.startswith("m"):
smax = "-" + smax[1:]
lmax = float(smax)
except Exception as e:
logger.warning(str(e))
channels.append((lmin, lmax))
llst = clst[0].split(",")
lmin = None
lmax = None
try:
smin = llst[0]
if smin.startswith("m"):
smin = "-" + smin[1:]
lmin = float(smin)
except Exception:
pass
try:
smax = llst[1]
if smax.startswith("m"):
smax = "-" + smax[1:]
lmax = float(smax)
except Exception:
pass
self.updateLevels(lmin, lmax, channels, force=True)
self.__updateRadio(dchl)
def __updateRadio(self, dchl=None):
""" update RGB radio button position
:param dchl: channel id
:type dchl: :obj:`int`
"""
if dchl is None:
dchl = self.__dchl
if dchl == 0 and not self.__ui.monoRadioButton.isChecked():
self.__ui.monoRadioButton.click()
elif dchl == 1 and not self.__ui.redRadioButton.isChecked():
self.__ui.redRadioButton.click()
elif dchl == 2 and not self.__ui.greenRadioButton.isChecked():
self.__ui.greenRadioButton.click()
elif dchl == 3 and not self.__ui.blueRadioButton.isChecked():
self.__ui.blueRadioButton.click()
[docs] def autoFactor(self):
""" provides factor for automatic levels
:returns: factor for automatic levels
:rtype: :obj:`str`
"""
return str(self.__ui.autofactorLineEdit.text())
[docs] def setAutoFactor(self, factor):
""" sets factor for automatic levels
:param factor: factor for automatic levels
:type factor: :obj:`str`
"""
self.__ui.autofactorLineEdit.setText(factor)
if factor:
self.setAutoLevels(2)
self._onAutoFactorChanged(factor)
[docs] def levelMode(self):
""" return historgram level mode
:return: level mode
:rtype: :obj:`str`
"""
# if self.__histogram and self.__histo:
# return self.__histogram.levelMode
return self.__levelmode
[docs] def setGradientColors(self, status=True):
""" sets gradientcolors on/off
:param status: True for on and False for off
:type status: :obj:`bool`
"""
if self.__gradientcolors != status:
self.__gradientcolors = status
self.__updateRadio(0)
self.showGradient(
not self.__rgbstatus or self.__gradientcolors)
self.showHistograms(self.__rgbstatus)
[docs] def gradientColors(self):
""" gets gradientcolors on/off
:returns: True for on and False for off
:rtype: :obj:`bool`
"""
return self.__gradientcolors