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kivy_venv/share/kivy-examples/demo/pictures/android.txt

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+title=Pictures
+author=Kivy team
+orientation=landscape

kivy_venv/share/kivy-examples/demo/pictures/main.py

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+'''
+Basic Picture Viewer
+====================
+
+This simple image browser demonstrates the scatter widget. You should
+see three framed photographs on a background. You can click and drag
+the photos around, or multi-touch to drop a red dot to scale and rotate the
+photos.
+
+The photos are loaded from the local images directory, while the background
+picture is from the data shipped with kivy in kivy/data/images/background.jpg.
+The file pictures.kv describes the interface and the file shadow32.png is
+the border to make the images look like framed photographs. Finally,
+the file android.txt is used to package the application for use with the
+Kivy Launcher Android application.
+
+For Android devices, you can copy/paste this directory into
+/sdcard/kivy/pictures on your Android device.
+
+The images in the image directory are from the Internet Archive,
+`https://archive.org/details/PublicDomainImages`, and are in the public
+domain.
+
+'''
+
+import kivy
+kivy.require('1.0.6')
+
+from glob import glob
+from random import randint
+from os.path import join, dirname
+from kivy.app import App
+from kivy.logger import Logger
+from kivy.uix.scatter import Scatter
+from kivy.properties import StringProperty
+
+
+class Picture(Scatter):
+    '''Picture is the class that will show the image with a white border and a
+    shadow. They are nothing here because almost everything is inside the
+    picture.kv. Check the rule named <Picture> inside the file, and you'll see
+    how the Picture() is really constructed and used.
+
+    The source property will be the filename to show.
+    '''
+
+    source = StringProperty(None)
+
+
+class PicturesApp(App):
+
+    def build(self):
+
+        # the root is created in pictures.kv
+        root = self.root
+
+        # get any files into images directory
+        curdir = dirname(__file__)
+        for filename in glob(join(curdir, 'images', '*')):
+            try:
+                # load the image
+                picture = Picture(source=filename, rotation=randint(-30, 30))
+                # add to the main field
+                root.add_widget(picture)
+            except Exception as e:
+                Logger.exception('Pictures: Unable to load <%s>' % filename)
+
+    def on_pause(self):
+        return True
+
+
+if __name__ == '__main__':
+    PicturesApp().run()

kivy_venv/share/kivy-examples/demo/pictures/pictures.kv

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+#:kivy 1.0
+#:import kivy kivy
+#:import win kivy.core.window
+
+FloatLayout:
+    canvas:
+        Color:
+            rgb: 1, 1, 1
+        Rectangle:
+            source: 'data/images/background.jpg'
+            size: self.size
+
+    BoxLayout:
+        padding: 10
+        spacing: 10
+        size_hint: 1, None
+        pos_hint: {'top': 1}
+        height: 44
+        Image:
+            size_hint: None, None
+            size: 24, 24
+            source: 'data/logo/kivy-icon-24.png'
+        Label:
+            height: 24
+            text_size: self.width, None
+            color: (1, 1, 1, .8)
+            text: 'Kivy %s - Pictures' % kivy.__version__
+
+
+
+<Picture>:
+    # each time a picture is created, the image can delay the loading
+    # as soon as the image is loaded, ensure that the center is changed
+    # to the center of the screen.
+    on_size: self.center = win.Window.center
+    size: image.size
+    size_hint: None, None
+
+    Image:
+        id: image
+        source: root.source
+
+        # create initial image to be 400 pixels width
+        size: 400, 400 / self.image_ratio
+
+        # add shadow background
+        canvas.before:
+            Color:
+                rgba: 1,1,1,1
+            BorderImage:
+                source: 'shadow32.png'
+                border: (36,36,36,36)
+                size:(self.width+72, self.height+72)
+                pos: (-36,-36)
+
+
+