本文整理汇总了Python中PyQt4.QtCore.QIODevice.ReadWrite方法的典型用法代码示例。如果您正苦于以下问题：Python QIODevice.ReadWrite方法的具体用法？Python QIODevice.ReadWrite怎么用？Python QIODevice.ReadWrite使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类PyQt4.QtCore.QIODevice的用法示例。
在下文中一共展示了QIODevice.ReadWrite方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: fromqimage
# 需要导入模块: from PyQt4.QtCore import QIODevice [as 别名]
# 或者: from PyQt4.QtCore.QIODevice import ReadWrite [as 别名]
def fromqimage(im):
buffer = QBuffer()
buffer.open(QIODevice.ReadWrite)
# preserve alha channel with png
# otherwise ppm is more friendly with Image.open
if im.hasAlphaChannel():
im.save(buffer, 'png')
else:
im.save(buffer, 'ppm')
b = BytesIO()
try:
b.write(buffer.data())
except TypeError:
# workaround for Python 2
b.write(str(buffer.data()))
buffer.close()
b.seek(0)
return Image.open(b) 示例2: fromqimage
# 需要导入模块: from PyQt4.QtCore import QIODevice [as 别名]
# 或者: from PyQt4.QtCore.QIODevice import ReadWrite [as 别名]
def fromqimage(im):
"""
:param im: A PIL Image object, or a file name
(given either as Python string or a PyQt string object)
"""
buffer = QBuffer()
buffer.open(QIODevice.ReadWrite)
# preserve alha channel with png
# otherwise ppm is more friendly with Image.open
if im.hasAlphaChannel():
im.save(buffer, 'png')
else:
im.save(buffer, 'ppm')
b = BytesIO()
try:
b.write(buffer.data())
except TypeError:
# workaround for Python 2
b.write(str(buffer.data()))
buffer.close()
b.seek(0)
return Image.open(b) 示例3: fromqpixmap
# 需要导入模块: from PyQt4.QtCore import QIODevice [as 别名]
# 或者: from PyQt4.QtCore.QIODevice import ReadWrite [as 别名]
def fromqpixmap(im):
return fromqimage(im)
# buffer = QBuffer()
# buffer.open(QIODevice.ReadWrite)
# # im.save(buffer)
# # What if png doesn't support some image features like animation?
# im.save(buffer, 'ppm')
# bytes_io = BytesIO()
# bytes_io.write(buffer.data())
# buffer.close()
# bytes_io.seek(0)
# return Image.open(bytes_io)