mirror of
https://github.com/python-pillow/Pillow.git
synced 2024-12-26 18:06:18 +03:00
103 lines
2.9 KiB
Python
103 lines
2.9 KiB
Python
#
|
|
# The Python Imaging Library.
|
|
# $Id$
|
|
#
|
|
# a simple Qt image interface.
|
|
#
|
|
# history:
|
|
# 2006-06-03 fl: created
|
|
# 2006-06-04 fl: inherit from QImage instead of wrapping it
|
|
# 2006-06-05 fl: removed toimage helper; move string support to ImageQt
|
|
# 2013-11-13 fl: add support for Qt5 (aurelien.ballier@cyclonit.com)
|
|
#
|
|
# Copyright (c) 2006 by Secret Labs AB
|
|
# Copyright (c) 2006 by Fredrik Lundh
|
|
#
|
|
# See the README file for information on usage and redistribution.
|
|
#
|
|
|
|
from PIL import Image
|
|
from PIL._util import isPath
|
|
import sys
|
|
|
|
if 'PyQt4.QtGui' not in sys.modules:
|
|
try:
|
|
from PyQt5.QtGui import QImage, qRgba
|
|
except:
|
|
try:
|
|
from PyQt4.QtGui import QImage, qRgba
|
|
except:
|
|
from PySide.QtGui import QImage, qRgba
|
|
|
|
else: #PyQt4 is used
|
|
from PyQt4.QtGui import QImage, qRgba
|
|
|
|
##
|
|
# (Internal) Turns an RGB color into a Qt compatible color integer.
|
|
|
|
|
|
def rgb(r, g, b, a=255):
|
|
# use qRgb to pack the colors, and then turn the resulting long
|
|
# into a negative integer with the same bitpattern.
|
|
return (qRgba(r, g, b, a) & 0xffffffff)
|
|
|
|
|
|
##
|
|
# An PIL image wrapper for Qt. This is a subclass of PyQt4's QImage
|
|
# class.
|
|
#
|
|
# @param im A PIL Image object, or a file name (given either as Python
|
|
# string or a PyQt string object).
|
|
|
|
class ImageQt(QImage):
|
|
|
|
def __init__(self, im):
|
|
|
|
data = None
|
|
colortable = None
|
|
|
|
# handle filename, if given instead of image name
|
|
if hasattr(im, "toUtf8"):
|
|
# FIXME - is this really the best way to do this?
|
|
if str is bytes:
|
|
im = unicode(im.toUtf8(), "utf-8")
|
|
else:
|
|
im = str(im.toUtf8(), "utf-8")
|
|
if isPath(im):
|
|
im = Image.open(im)
|
|
|
|
if im.mode == "1":
|
|
format = QImage.Format_Mono
|
|
elif im.mode == "L":
|
|
format = QImage.Format_Indexed8
|
|
colortable = []
|
|
for i in range(256):
|
|
colortable.append(rgb(i, i, i))
|
|
elif im.mode == "P":
|
|
format = QImage.Format_Indexed8
|
|
colortable = []
|
|
palette = im.getpalette()
|
|
for i in range(0, len(palette), 3):
|
|
colortable.append(rgb(*palette[i:i+3]))
|
|
elif im.mode == "RGB":
|
|
data = im.tobytes("raw", "BGRX")
|
|
format = QImage.Format_RGB32
|
|
elif im.mode == "RGBA":
|
|
try:
|
|
data = im.tobytes("raw", "BGRA")
|
|
except SystemError:
|
|
# workaround for earlier versions
|
|
r, g, b, a = im.split()
|
|
im = Image.merge("RGBA", (b, g, r, a))
|
|
format = QImage.Format_ARGB32
|
|
else:
|
|
raise ValueError("unsupported image mode %r" % im.mode)
|
|
|
|
# must keep a reference, or Qt will crash!
|
|
self.__data = data or im.tobytes()
|
|
|
|
QImage.__init__(self, self.__data, im.size[0], im.size[1], format)
|
|
|
|
if colortable:
|
|
self.setColorTable(colortable)
|