ASCEE/pyqtgraph
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Format_RGB32 will always have alpha equal 255

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this also fixes the assumption that we are on little-endian.

In [18]: qimg = QtGui.QImage(1, 1, QtGui.QImage.Format.Format_RGB32)

In [19]: qimg.fill(QtCore.Qt.GlobalColor.transparent)

In [20]: np.frombuffer(qimg.bits(), dtype=np.uint8)
Out[20]: array([  0,   0,   0, 255], dtype=uint8)
This commit is contained in:
KIU Shueng Chuan 2021-05-07 18:09:02 +08:00
parent bfc63bb730
commit 0503f96121
1 changed files with 0 additions and 3 deletions
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3
pyqtgraph/functions.py
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@ -1503,7 +1503,6 @@ def imageToArray(img, copy=False, transpose=True):
the QImage is collected before the array, there may be trouble). the QImage is collected before the array, there may be trouble).
The array will have shape (width, height, (b,g,r,a)). The array will have shape (width, height, (b,g,r,a)).
""" """
fmt = img.format()
img_ptr = img.bits() img_ptr = img.bits()
if QT_LIB.startswith('PyQt'): if QT_LIB.startswith('PyQt'):
@ -1522,8 +1521,6 @@ def imageToArray(img, copy=False, transpose=True):
arr = np.frombuffer(img_ptr, dtype=np.ubyte) arr = np.frombuffer(img_ptr, dtype=np.ubyte)
arr = arr.reshape(img.height(), img.width(), 4) arr = arr.reshape(img.height(), img.width(), 4)
if fmt == img.Format_RGB32:
arr[...,3] = 255
if copy: if copy:
arr = arr.copy() arr = arr.copy()