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# coding: utf-8
# /*##########################################################################
#
# Copyright (c) 2017-2018 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.
#
# ###########################################################################*/
"""This module provides convenient functions to use with Qt objects.
"""
__authors__ = ["T. Vincent"]
__license__ = "MIT"
__date__ = "16/10/2020"
import numpy
from silx.gui import qt
from silx.gui import colors
def convertArrayToQImage(image):
"""Convert an array-like RGB888 image to a QImage.
The created QImage is using a copy of the array data.
Limitation: Only supports RGB888 and RGBA8888 format.
:param image: Array-like image data
:type image: numpy.ndarray of uint8 of dimension HxWx3
:return: Corresponding Qt image
:rtype: QImage
"""
# Possible extension: add a format argument to support more formats
image = numpy.array(image, copy=False, order='C', dtype=numpy.uint8)
height, width, depth = image.shape
if depth == 3:
qimage = qt.QImage(
image.data,
width,
height,
image.strides[0], # bytesPerLine
qt.QImage.Format_RGB888)
elif depth == 4:
qimage = qt.QImage(
image.data,
width,
height,
image.strides[0], # bytesPerLine
qt.QImage.Format_RGBA8888)
else:
assert(False)
return qimage.copy() # Making a copy of the image and its data
def maskArrayToRgba(mask, falseColor, trueColor):
"""
Returns an RGBA uint8 numpy array using colors to map True (usually masked pixels)
and Flase (valid pixel) from
the mask array.
"""
trueColor = numpy.array(colors.rgba(trueColor))
trueColor = (trueColor * 256.0).clip(0, 255).astype(numpy.uint8)
falseColor = numpy.array(colors.rgba(falseColor))
falseColor = (falseColor * 256.0).clip(0, 255).astype(numpy.uint8)
shape = mask.shape[0], mask.shape[1], 4
image = numpy.empty(shape, dtype=numpy.uint8)
image[mask] = trueColor
image[~mask] = falseColor
return image
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