Question

我正在测试将包含多个图像的zip文件加载到kivy图像并证明它将循环遍历所有图像的功能。

我之前尝试过这些例子：

https://groups.google.com/forum/#!topic/kivy-users/t_iKvpgLIzE https://kivy.org/docs/api-kivy.core.image.html

我可以让这些工作，但是，我找不到在这种情况下加载.zip文件或.gif文件的示例。

如果zipfile位于内存中，我请求查看是否可以加载包含图像的zipfile。或者，如果可以从内存中加载的图像创建动画。

import io
import zipfile
from kivy.core.image import Image as CoreImage
from kivy.uix.image import Image
from kivy.app import App
from kivy.uix.boxlayout import BoxLayout

class testApp(App):

    def get_image_from_memory(self):
        with io.BytesIO(open("archer_F_idle.zip", "rb").read()) as f:
            imgzip = f.read()
            print(imgzip)
            zipped_imgs = zipfile.ZipFile(f)
            print(zipped_imgs, zipped_imgs.namelist(),zipped_imgs.filename)


        return Image(source=zipped_imgs)


    def build(self):
        self.b = BoxLayout()
        self.b.add_widget(self.get_image_from_memory())
        return self.b

if __name__ == '__main__':  
    testApp().run()

以下是以下错误：

ValueError: Image.source accept only str

Answer 1

这是一个有效的例子。确保您已将zip文件名和图像exc / filename更改为您的：

import io
import zipfile
from kivy.core.image import Image as CoreImage
from kivy.uix.image import Image
from kivy.app import App
from kivy.uix.boxlayout import BoxLayout


class testApp(App):    
    def get_image_from_memory(self):
        with zipfile.ZipFile("C:/Users/gmn/Downloads/Cover.zip") as myzip:
            with myzip.open('Cover.jpg') as myfile:
                ci = CoreImage(io.BytesIO(myfile.read()), ext="jpg")
                return Image(texture=ci.texture)

    def build(self):
        self.b = BoxLayout()
        self.b.add_widget(self.get_image_from_memory())
        return self.b


if __name__ == '__main__':
    testApp().run()

<强> UPD：

Zip文件应包含一个或多个图像。

import io
import zipfile
from itertools import cycle

from kivy.clock import Clock
from kivy.core.image import Image as CoreImage
from kivy.uix.image import Image
from kivy.app import App
from kivy.uix.boxlayout import BoxLayout
from kivy.properties import StringProperty


class ZipAnimationImage(Image):
    zip_source = StringProperty('')

    def __init__(self, **kwargs):
        self._cycle = None
        super(Image, self).__init__(**kwargs)
        Clock.schedule_interval(self._update, 1.0)

    def _update(self, *args):
        if self._cycle:
            self.texture = next(self._cycle).texture

    def on_zip_source(self, *args):
        cis = []
        with zipfile.ZipFile(self.zip_source) as z:
            names = z.namelist()
            for name in names:
                ext = name.split('.')[-1]
                with z.open(name) as f:
                    ci = CoreImage(io.BytesIO(f.read()), ext=ext)
                    cis.append(ci)
        self._cycle = cycle(cis) if cis else None


class testApp(App):
    def build(self):
        self.b = BoxLayout()
        self.b.add_widget(ZipAnimationImage(zip_source='C:/Users/gmn/Downloads/test.zip'))
        return self.b


if __name__ == '__main__':
    testApp().run()

将In Memory ZipFile对象加载为KivyImage

1 个答案: