2010-07-31 06:52:47 +04:00
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#
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# The Python Imaging Library.
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# $Id$
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#
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# a simple Qt image interface.
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#
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# history:
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# 2006-06-03 fl: created
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# 2006-06-04 fl: inherit from QImage instead of wrapping it
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# 2006-06-05 fl: removed toimage helper; move string support to ImageQt
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2013-11-13 15:34:09 +04:00
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# 2013-11-13 fl: add support for Qt5 (aurelien.ballier@cyclonit.com)
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2010-07-31 06:52:47 +04:00
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#
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# Copyright (c) 2006 by Secret Labs AB
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# Copyright (c) 2006 by Fredrik Lundh
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#
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# See the README file for information on usage and redistribution.
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#
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2014-09-15 22:24:56 +04:00
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import PIL
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2013-06-30 15:04:42 +04:00
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from PIL._util import isPath
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2014-11-11 20:00:00 +03:00
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import sys
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2010-07-31 06:52:47 +04:00
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2014-09-15 22:24:56 +04:00
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qt_is_installed = True
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try:
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from PyQt5.QtGui import QGuiApplication, QImage, qRgb, qRgba, QPixmap
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from PyQt5.QtCore import QBuffer, QIODevice
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except ImportError:
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try:
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from PyQt4.QtGui import QGuiApplication, QImage, qRgb, qRgba, QPixmap
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from PyQt4.QtCore import QBuffer, QIODevice
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except ImportError:
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try:
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from PySide.QtGui import QGuiApplication, QImage, qRgb, qRgba, QPixmap
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from PySide.QtCore import QBuffer, QIODevice
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except ImportError:
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qt_is_installed = False
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2010-07-31 06:52:47 +04:00
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2014-09-15 22:24:56 +04:00
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from io import BytesIO
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2010-07-31 06:52:47 +04:00
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2015-04-24 02:26:52 +03:00
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2013-11-21 10:20:13 +04:00
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def rgb(r, g, b, a=255):
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2014-09-15 22:24:56 +04:00
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"""(Internal) Turns an RGB color into a Qt compatible color integer."""
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2010-07-31 06:52:47 +04:00
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# use qRgb to pack the colors, and then turn the resulting long
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# into a negative integer with the same bitpattern.
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2013-11-21 10:20:13 +04:00
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return (qRgba(r, g, b, a) & 0xffffffff)
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2010-07-31 06:52:47 +04:00
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2014-09-15 22:24:56 +04:00
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# :param im A PIL Image object, or a file name (given either as Python string or a PyQt string object).
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2010-07-31 06:52:47 +04:00
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2014-09-15 22:24:56 +04:00
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def fromqimage(im):
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buffer = QBuffer()
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buffer.open(QIODevice.ReadWrite)
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im.save(buffer, 'ppm')
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bytes_io = BytesIO()
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try:
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bytes_io.write(buffer.data())
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except TypeError:
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# workaround for Python 2
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bytes_io.write(str(buffer.data()))
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buffer.close()
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bytes_io.seek(0)
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return PIL.Image.open(bytes_io)
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def fromqpixmap(im):
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return fromqimage(im)
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# buffer = QBuffer()
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# buffer.open(QIODevice.ReadWrite)
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# # im.save(buffer)
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# # What if png doesn't support some image features like animation?
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# im.save(buffer, 'ppm')
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# bytes_io = BytesIO()
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# bytes_io.write(buffer.data())
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# buffer.close()
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# bytes_io.seek(0)
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# return PIL.Image.open(bytes_io)
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def _toqclass_helper(im):
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data = None
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colortable = None
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# handle filename, if given instead of image name
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if hasattr(im, "toUtf8"):
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# FIXME - is this really the best way to do this?
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if str is bytes:
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im = unicode(im.toUtf8(), "utf-8")
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else:
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im = str(im.toUtf8(), "utf-8")
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if isPath(im):
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im = PIL.Image.open(im)
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if im.mode == "1":
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format = QImage.Format_Mono
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elif im.mode == "L":
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format = QImage.Format_Indexed8
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colortable = []
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for i in range(256):
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colortable.append(rgb(i, i, i))
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elif im.mode == "P":
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format = QImage.Format_Indexed8
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colortable = []
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palette = im.getpalette()
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for i in range(0, len(palette), 3):
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colortable.append(rgb(*palette[i:i+3]))
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elif im.mode == "RGB":
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data = im.tobytes("raw", "BGRX")
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format = QImage.Format_RGB32
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elif im.mode == "RGBA":
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try:
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data = im.tobytes("raw", "BGRA")
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except SystemError:
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# workaround for earlier versions
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r, g, b, a = im.split()
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im = PIL.Image.merge("RGBA", (b, g, r, a))
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format = QImage.Format_ARGB32
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else:
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raise ValueError("unsupported image mode %r" % im.mode)
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# must keep a reference, or Qt will crash!
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__data = data or im.tobytes()
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return {
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'data': __data, 'im': im, 'format': format, 'colortable': colortable
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}
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def toqimage(im):
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im_data = _toqclass_helper(im)
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result = QImage(
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im_data['data'], im_data['im'].size[0], im_data['im'].size[1],
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im_data['format']
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)
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if im_data['colortable']:
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result.setColorTable(im_data['colortable'])
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return result
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def toqpixmap(im):
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# This doesn't work. For now using a dumb approach.
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# im_data = _toqclass_helper(im)
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# result = QPixmap(im_data['im'].size[0], im_data['im'].size[1])
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# result.loadFromData(im_data['data'])
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# Fix some strange bug that causes
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if im.mode == 'RGB':
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im = im.convert('RGBA')
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qimage = im.toqimage()
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qimage.save('/tmp/hopper_{}_qpixmap_qimage.png'.format(im.mode))
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return QPixmap.fromImage(qimage)
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