如何将图像转换为python代码

Question

我曾尝试使用 wxpython 制作应用程序。我需要为我的 GUI（facebook 加载）制作列表视图。所以我选择了ObjectListview。不幸的是，对于初学者来说，这是一项非常艰苦的工作并且缺乏信息。我测试了'SimpleExamples'。它工作得很好。但我需要更改图像。尽管我努力自己弄清楚，但我做不到。通过一些努力，我发现图像文件是 python 代码。但我不知道如何将图像转换为python代码

你能帮帮我吗？？？你的答案可能是我最好的答案。

源代码来自https://github.com/adrianer/ObjectListView

这是来自 ObjectListview 的 SimpleExample2.py

# -*- coding: utf-8 -*-
#!/usr/bin/env python

import datetime
import wx

# Where can we find the ObjectListView module?
import sys
sys.path.append("..")

from ObjectListView import ObjectListView, ColumnDefn

import ExampleModel
import ExampleImages ******# We store our images as python code**Look at here please~****

class MyFrame(wx.Frame):
    def __init__(self, *args, **kwds):
        wx.Frame.__init__(self, *args, **kwds)
        self.Init()

    def Init(self):
        self.InitModel()
        self.InitWidgets()
        self.InitObjectListView()

    def InitModel(self):
        self.songs = ExampleModel.GetTracks()

    def InitWidgets(self):
        panel = wx.Panel(self, -1)
        sizer_1 = wx.BoxSizer(wx.VERTICAL)
        sizer_1.Add(panel, 1, wx.ALL|wx.EXPAND)
        self.SetSizer(sizer_1)

        self.myOlv = ObjectListView(panel, -1, style=wx.LC_REPORT|wx.SUNKEN_BORDER)
        sizer_2 = wx.BoxSizer(wx.VERTICAL)
        sizer_2.Add(self.myOlv, 1, wx.ALL|wx.EXPAND, 4)
        panel.SetSizer(sizer_2)

        self.Layout()

    def InitObjectListView(self):
        groupImage = self.myOlv.AddImages(ExampleImages.getGroup16Bitmap(), ExampleImages.getGroup32Bitmap())
        userImage = self.myOlv.AddImages(ExampleImages.getUser16Bitmap(), ExampleImages.getUser32Bitmap())
        musicImage = self.myOlv.AddImages(ExampleImages.getMusic16Bitmap(), ExampleImages.getMusic32Bitmap())

        soloArtists = ["Nelly Furtado", "Missy Higgins", "Moby", "Natalie Imbruglia",
                       "Dido", "Paul Simon", "Bruce Cockburn"]
        def artistImageGetter(track):
            if track.artist in soloArtists:
                return userImage
            else:
                return groupImage

        def sizeToNiceString(byteCount):
            """
            Convert the given byteCount into a string like: 9.9bytes/KB/MB/GB
            """
            for (cutoff, label) in [(1024*1024*1024, "GB"), (1024*1024, "MB"), (1024, "KB")]:
                if byteCount >= cutoff:
                    return "%.1f %s" % (byteCount * 1.0 / cutoff, label)

            if byteCount == 1:
                return "1 byte"
            else:
                return "%d bytes" % byteCount

        self.myOlv.SetColumns([
            ColumnDefn("Title", "left", 120, "title", imageGetter=musicImage),
            ColumnDefn("Artist", "left", 120, "artist", imageGetter=artistImageGetter),
            ColumnDefn("Size", "center", 100, "sizeInBytes", stringConverter=sizeToNiceString),
            ColumnDefn("Last Played", "left", 100, "lastPlayed", stringConverter="%d-%m-%Y"),
            ColumnDefn("Rating", "center", 100, "rating")
        ])
        self.myOlv.SetObjects(self.songs)

if __name__ == '__main__':
    app = wx.PySimpleApp(1)
    wx.InitAllImageHandlers()
    frame_1 = MyFrame(None, -1, "ObjectListView Simple Example 2")
    app.SetTopWindow(frame_1)
    frame_1.Show()
    app.MainLoop()

还有 ExampleImages.py 代码 我从未见过那些代码（x00\x10\x08）。我认为如果我想在 Objectlistview 中使用图像，我需要更改类似这样的代码（x00\x10\x08）。

from wx import ImageFromStream, BitmapFromImage, EmptyIcon
import cStringIO, zlib


def getGroup16Data():
    return zlib.decompress(
'x\xda\x017\x01\xc8\xfe\x89PNG\r\n\x1a\n\x00\x00\x00\rIHDR\x00\x00\x00\x10\
\x00\x00\x00\x10\x08\x02\x00\x00\x00\x90\x91h6\x00\x00\x00\x03sBIT\x08\x08\
\x08\xdb\xe1O\xe0\x00\x00\x00\xefIDAT(\x91\x85\x92\xc1u\xc30\x0cC\x117Sh\rt\
\r\xadA\xceD\xcc\x9150G\xc7P\x0f\xb2]5\xcf\xcf\xc1I\x96\xf8\x01\x89\xe6c\x8c\
\x01@\x92m\x00U\x85{\x8d1\xaaj\x8c1\xc6\x88\x88\x88\x18\x87\xaaj\xfd\x9c\xda\
&v&\x9c\x92\x14\x11$3s\xdd\xdfl\x03\x94\x9c\x99+2y\x92oF_\x00z\x8f\xde{kA\
\xf6\xd6\xba\x94\xad5+\x7f\xd0^\xafWk\xad\xf7\xfe\x97p\xaeH\x90\x98vRV\x85\
\x95\xb0\xc2\xca\xfc>\xcb\x9ek\xdc\x12n\xd8U\x01\x00\x16\xe4k\xe0]\xd6d\xff=\
\xba\xaa\xa4\xa5\x0fRD\xdc\x98l\x87\xd7\xbc\xbb\xbd\x1b\xf2\x03\xb0c$\x08I+`\
\x03\x8ck`)\xf2^\xea\xd9:K\x9aG\xb7\x8f\x9eW\xf3n\x91\x99$\x8f\xd1\xb0>\x90G\
\xf2\x13\xc7\x84f\xa6$\x92\xf6\xc5D\xecy\xe4c\x8e\xf7\xd49gUe[\xca\xfd_2H\
\xcev\xff\x02\x0b[\xa5cP|\xd5p\x00\x00\x00\x00IEND\xaeB`\x82\xf3\x99\x84Y' )

def getGroup16Bitmap():
    return BitmapFromImage(getGroup16Image())

def getGroup16Image():
    stream = cStringIO.StringIO(getGroup16Data())
    return ImageFromStream(stream)

#----------------------------------------------------------------------

我理解错了吗？？？ 有没有其他方法可以改变图像。 （我需要更改图像大小、位置、字体和文本大小等......但首先我想更改图像）

Answer 1

使用 wxPython 在 python 文件中嵌入和图像的标准方法是使用img2py。 Here's 一篇使用它的博文（见一半左右）。

Answer 2

解决办法如下：

from wx import BitmapFromImage, ImageFromStream
from cStringIO import StringIO

def getGroup16Data():
    return \
'\x89PNG\r\n\x1a\n\x00\x00\x00\rIHDR\x00\x00\x00\x10\
\x00\x00\x00\x10\x08\x02\x00\x00\x00\x90\x91h6\x00\x00\x00\x03sBIT\x08\x08\
\x08\xdb\xe1O\xe0\x00\x00\x00\xefIDAT(\x91\x85\x92\xc1u\xc30\x0cC\x117Sh\rt\
\r\xadA\xceD\xcc\x9150G\xc7P\x0f\xb2]5\xcf\xcf\xc1I\x96\xf8\x01\x89\xe6c\x8c\
\x01@\x92m\x00U\x85{\x8d1\xaaj\x8c1\xc6\x88\x88\x88\x18\x87\xaaj\xfd\x9c\xda\
&v&\x9c\x92\x14\x11$3s\xdd\xdfl\x03\x94\x9c\x99+2y\x92oF_\x00z\x8f\xde{kA\
\xf6\xd6\xba\x94\xad5+\x7f\xd0^\xafWk\xad\xf7\xfe\x97p\xaeH\x90\x98vRV\x85\
\x95\xb0\xc2\xca\xfc>\xcb\x9ek\xdc\x12n\xd8U\x01\x00\x16\xe4k\xe0]\xd6d\xff=\
\xba\xaa\xa4\xa5\x0fRD\xdc\x98l\x87\xd7\xbc\xbb\xbd\x1b\xf2\x03\xb0c$\x08I+`\
\x03\x8ck`)\xf2^\xea\xd9:K\x9aG\xb7\x8f\x9eW\xf3n\x91\x99$\x8f\xd1\xb0>\x90G\
\xf2\x13\xc7\x84f\xa6$\x92\xf6\xc5D\xecy\xe4c\x8e\xf7\xd49gUe[\xca\xfd_2H\
\xcev\xff\x02\x0b[\xa5cP|\xd5p\x00\x00\x00\x00IEND\xaeB`\x82\xf3\x99\x84Y'

def getGroup16Bitmap():
    return BitmapFromImage(ImageFromStream(StringIO(getGroup16Data())))

要转换图像，请使用以下代码：Create text file of hexadecimal from binary 请检查我是否遗漏了您的十六进制字符串的起始部分，留下了来自'\x89PNG...' 的部分。

Answer 3

我终于知道了^^ 有用。但是 Objectlistview 一点也不容易......我需要越来越多地改变喜好和大小。反正这里是代码

    # -*- coding: utf-8 -*-
    #!/usr/bin/env python

    import datetime
    import wx
    import cStringIO
    from PIL import Image

    #from wx import ImageFromStream, BitmapFromImage, EmptyIcon

    # Where can we find the ObjectListView module?
    import sys
    sys.path.append("..")

    from ObjectListView import ObjectListView, ColumnDefn

    import ExampleModel
    import ExampleImages # We store our images as python code

    class MyFrame(wx.Frame):
        def __init__(self, *args, **kwds):
            wx.Frame.__init__(self, *args, **kwds)
            self.Init()

        def Init(self):
            self.InitModel()
            self.InitWidgets()
            self.InitObjectListView()

        def InitModel(self):
            self.songs = ExampleModel.GetTracks()

        def InitWidgets(self):
            panel = wx.Panel(self, -1)
            sizer_1 = wx.BoxSizer(wx.VERTICAL)
            sizer_1.Add(panel, 1, wx.ALL|wx.EXPAND)
            self.SetSizer(sizer_1)

            self.myOlv = ObjectListView(panel, -1, style=wx.LC_REPORT|wx.SUNKEN_BORDER)
            sizer_2 = wx.BoxSizer(wx.VERTICAL)
            sizer_2.Add(self.myOlv, 1, wx.ALL|wx.EXPAND, 4)
            panel.SetSizer(sizer_2)

            self.Layout()

        def InitObjectListView(self):
            groupImage = self.myOlv.AddImages(ExampleImages.getGroup16Bitmap(), ExampleImages.getGroup32Bitmap())
            userImage = self.myOlv.AddImages(ExampleImages.getUser16Bitmap(), ExampleImages.getUser32Bitmap())
    ######################################################################3333
            #open the image file
            imageFile = '111.png'
            data = open(imageFile, "rb").read()
            # convert to a data stream
            stream = cStringIO.StringIO(data)
            # convert to a bitmap
            bmp = wx.BitmapFromImage( wx.ImageFromStream(stream))
            musicImage = self.myOlv.AddImages(bmp)
   ###################################################################
   #########  changed code  ##########################################

            soloArtists = ["Nelly Furtado", "Missy Higgins", "Moby", "Natalie Imbruglia",
                           "Dido", "Paul Simon", "Bruce Cockburn"]

            def artistImageGetter(track):
                if track.artist in soloArtists:
                    return userImage
                else:
                    return groupImage

            def sizeToNiceString(byteCount):
                """
                Convert the given byteCount into a string like: 9.9bytes/KB/MB/GB
                """
                for (cutoff, label) in [(1024*1024*1024, "GB"), (1024*1024, "MB"), (1024, "KB")]:
                    if byteCount >= cutoff:
                        return "%.1f %s" % (byteCount * 1.0 / cutoff, label)

                if byteCount == 1:
                    return "1 byte"
                else:
                    return "%d bytes" % byteCount

            self.myOlv.SetColumns([
                ColumnDefn("Title", "left", 120, "title", imageGetter=musicImage),
                ColumnDefn("Artist", "left", 120, "artist", imageGetter=artistImageGetter),
                ColumnDefn("Size", "center", 100, "sizeInBytes", stringConverter=sizeToNiceString),
                ColumnDefn("Last Played", "left", 100, "lastPlayed", stringConverter="%d-%m-%Y"),
                ColumnDefn("Rating", "center", 100, "rating")
            ])
            self.myOlv.SetObjects(self.songs)

    if __name__ == '__main__':
        app = wx.PySimpleApp(1)
        wx.InitAllImageHandlers()
        frame_1 = MyFrame(None, -1, "ObjectListView Simple Example 2")
        app.SetTopWindow(frame_1)
        frame_1.Show()
        app.MainLoop()