bugfix

kivyblocks/custom_camera.py

@@ -1,3 +1,4 @@
+from kivy.logger import Logger
 from kivy.uix.camera import Camera
 from kivy.properties import BooleanProperty, NumericProperty
 from kivy.uix.button import Button
@@ -61,10 +62,12 @@ class CustomCamera(Camera):
 
 class QrReader(Camera):
 	def __init__(self, **kw):
+		Logger.info('QrReader:Initialed...........')
 		super(QrReader, self).__init__(**kw)
 		self.qr_reader = cv2.QRCodeDetector()
 		self.register_event_type('on_data')
 		self.qr_result = None
+		Logger.info('QrReader:Initialed')
 
 	def getValue(self):
 		return {

kivyblocks/markdown.py

@@ -222,7 +222,7 @@ class MarkdownBody(VBox):
 
 	def build_source(self,source_desc):
 		w = MarkdownBody(md_obj=self.md_obj,
-				csscls=md_obj.second_css, size_hint_y=None)
+				csscls=self.md_obj.second_css, size_hint_y=None)
 		w.show_mdtext(source_desc)
 		self.add_widget(w)
 		w.resize()
@@ -396,18 +396,18 @@ description file format
 	first_css = StringProperty("default")
 	second_css = StringProperty("default")
 	def __init__(self, **kw):
-		ScrollView.__init__(self)
+		super(Markdown, self).__init__(**kw)
 		self.root_body = MarkdownBody(md_obj=self,
 					csscls=self.first_css,
 					size_hint_y=None
 		)
 		self.root_body.bind(minimum_height=self.root_body.setter('height'))
 		self.add_widget(self.root_body)
+		self.source = kw.get('source')
 		if self.source:
 			self.load_text()
 		self.bind(size=self.root_body.resize)
 		self.bind(source=self.load_text)
-		# Clock.schedule_interval(self.check_parent_window, 1)
 
 	def check_parent_window(self, *args):
 		pw = self.get_parent_window()
@@ -418,7 +418,7 @@ description file format
 		self.root_body.stp_video()
 
 	def load_text(self, *args):
-		h =  getDataHandler(self.source)
+		h = getDataHandler(self.source)
 		h.bind(on_success=self.update)
 		h.bind(on_error=self.show_error)
 		h.handle()

kivyblocks/pagepanel.py

@@ -300,14 +300,17 @@ sub-widget's description file format
 			self.right_menu_showed = False
 			print('dismiss fired, right_menu_showed=',self.right_menu_showed)
 
-		print('right fired')
+		print('right menu fired')
 		if len(self.sub_widgets) < 1:
+			print('no sub_widgets')
 			return
 		if self.right_menu_showed:
+			print('right menu showed, not thing done')
 			return
 
 		w = self.sub_widgets[-1]
 		if not hasattr(w, 'menu_widget'):
+			print('this sub widget has not menu_widget')
 			return True
 		mc = MenuContainer()
 		mc.add_widget(w.menu_widget)

kivyblocks/qrcodereader.py

@@ -1,17 +1,20 @@
 import numpy as np
 import cv2
 from kivy.app import App
+from kivy.properties import BooleanProperty
 from kivy.core.window import Window
 from kivy.graphics.texture import Texture
 from kivy.uix.image import Image
 from kivy.clock import Clock
 
 class QRCodeReader(Image):
+	opened = BooleanProperty(False)
 	def __init__(self, **kwargs):
 		super().__init__(**kwargs)
 		self.register_event_type('on_data')
-		self.opened = False
 		self.task = None
+		if self.opened:
+			self.open()
 
 	def open(self):
 		self.opened = True

kivyblocks/xcamera/__init__.py

@@ -0,0 +1,15 @@
+"""
+Exposes `XCamera` directly in `xcamera` rather than `xcamera.xcamera`.
+Also note this may break `pip` since all imports within `xcamera.py` would be
+required at setup time. This is because `version.py` (same directory) is used
+by the `setup.py` file.
+Hence we're not exposing `XCamera` if `pip` is detected.
+"""
+import os
+
+project_dir = os.path.abspath(
+    os.path.join(__file__, os.pardir, os.pardir, os.pardir, os.pardir))
+using_pip = os.path.basename(project_dir).startswith('pip-')
+# only exposes `XCamera` if not within `pip` ongoing install
+if not using_pip:
+    from .xcamera import XCamera  # noqa

kivyblocks/xcamera/android_api.py

@@ -0,0 +1,85 @@
+from kivy.logger import Logger
+
+from jnius import JavaException, PythonJavaClass, autoclass, java_method
+
+Camera = autoclass('android.hardware.Camera')
+AndroidActivityInfo = autoclass('android.content.pm.ActivityInfo')
+AndroidPythonActivity = autoclass('org.kivy.android.PythonActivity')
+PORTRAIT = AndroidActivityInfo.SCREEN_ORIENTATION_PORTRAIT
+LANDSCAPE = AndroidActivityInfo.SCREEN_ORIENTATION_LANDSCAPE
+
+
+class ShutterCallback(PythonJavaClass):
+    __javainterfaces__ = ('android.hardware.Camera$ShutterCallback', )
+
+    @java_method('()V')
+    def onShutter(self):
+        # apparently, it is enough to have an empty shutter callback to play
+        # the standard shutter sound. If you pass None instead of shutter_cb
+        # below, the standard sound doesn't play O_o
+        pass
+
+
+class PictureCallback(PythonJavaClass):
+    __javainterfaces__ = ('android.hardware.Camera$PictureCallback', )
+
+    def __init__(self, filename, on_success):
+        super(PictureCallback, self).__init__()
+        self.filename = filename
+        self.on_success = on_success
+
+    @java_method('([BLandroid/hardware/Camera;)V')
+    def onPictureTaken(self, data, camera):
+        s = data.tostring()
+        with open(self.filename, 'wb') as f:
+            f.write(s)
+        Logger.info('xcamera: picture saved to %s', self.filename)
+        camera.startPreview()
+        self.on_success(self.filename)
+
+
+class AutoFocusCallback(PythonJavaClass):
+    __javainterfaces__ = ('android.hardware.Camera$AutoFocusCallback', )
+
+    def __init__(self, filename, on_success):
+        super(AutoFocusCallback, self).__init__()
+        self.filename = filename
+        self.on_success = on_success
+
+    @java_method('(ZLandroid/hardware/Camera;)V')
+    def onAutoFocus(self, success, camera):
+        if success:
+            Logger.info('xcamera: autofocus succeeded, taking picture...')
+            shutter_cb = ShutterCallback()
+            picture_cb = PictureCallback(self.filename, self.on_success)
+            camera.takePicture(shutter_cb, None, picture_cb)
+        else:
+            Logger.info('xcamera: autofocus failed')
+
+
+def take_picture(camera_widget, filename, on_success):
+    # to call the android API, we need access to the underlying
+    # android.hardware.Camera instance. However, there is no official way to
+    # retrieve it from the camera widget, so we need to dig into internal
+    # attributes :-( This works at least on kivy 1.9.1, but it might break any
+    # time soon.
+    camera = camera_widget._camera._android_camera
+    params = camera.getParameters()
+    params.setFocusMode("auto")
+    camera.setParameters(params)
+    cb = AutoFocusCallback(filename, on_success)
+    Logger.info('xcamera: starting autofocus...')
+    try:
+        camera.autoFocus(cb)
+    except JavaException as e:
+        Logger.info('Error when calling autofocus: {}'.format(e))
+
+
+def set_orientation(value):
+    previous = get_orientation()
+    AndroidPythonActivity.mActivity.setRequestedOrientation(value)
+    return previous
+
+
+def get_orientation():
+    return AndroidPythonActivity.mActivity.getRequestedOrientation()

kivyblocks/xcamera/main.py

@@ -0,0 +1,43 @@
+#!/usr/bin/env python
+from kivy.app import App
+from kivy.lang import Builder
+
+kv = """
+#:import XCamera kivy_garden.xcamera.XCamera
+
+FloatLayout:
+    orientation: 'vertical'
+
+    XCamera:
+        id: xcamera
+        on_picture_taken: app.picture_taken(*args)
+
+    BoxLayout:
+        orientation: 'horizontal'
+        size_hint: 1, None
+        height: sp(50)
+
+        Button:
+            text: 'Set landscape'
+            on_release: xcamera.force_landscape()
+
+        Button:
+            text: 'Restore orientation'
+            on_release: xcamera.restore_orientation()
+"""
+
+
+class CameraApp(App):
+    def build(self):
+        return Builder.load_string(kv)
+
+    def picture_taken(self, obj, filename):
+        print('Picture taken and saved to {}'.format(filename))
+
+
+def main():
+    CameraApp().run()
+
+
+if __name__ == '__main__':
+    main()

kivyblocks/xcamera/platform_api.py

@@ -0,0 +1,37 @@
+from kivy.utils import platform
+
+
+def play_shutter():
+    # bah, apparently we need to delay the import of kivy.core.audio, lese
+    # kivy cannot find a camera provider, at lease on linux. Maybe a
+    # gstreamer/pygame issue?
+    from kivy.core.audio import SoundLoader
+    sound = SoundLoader.load("data/shutter.wav")
+    sound.play()
+
+
+if platform == 'android':
+    from .android_api import (
+        LANDSCAPE, PORTRAIT, take_picture, set_orientation, get_orientation)
+
+else:
+
+    # generic fallback for taking pictures. Probably not the best quality,
+    # they are meant mostly for testing
+    LANDSCAPE = 'landscape'
+    PORTRAIT = 'portrait'
+
+    def take_picture(camera_widget, filename, on_success):
+        camera_widget.texture.save(filename, flipped=False)
+        play_shutter()
+        on_success(filename)
+
+    def set_orientation(value):
+        previous = get_orientation()
+        print('FAKE orientation set to {}'.format(value))
+        get_orientation.value = value
+        return previous
+
+    def get_orientation():
+        return get_orientation.value
+    get_orientation.value = PORTRAIT

kivyblocks/xcamera/version.py

@@ -0,0 +1 @@
+__version__ = '2020.0613'

kivyblocks/xcamera/xcamera.kv

@@ -0,0 +1,41 @@
+#:import xcamera kivy_garden.xcamera.xcamera
+
+<XCameraIconButton>
+    icon_color: (0, 0, 0, 1)
+    _down_color: xcamera.darker(self.icon_color)
+    icon_size: dp(50)
+
+    canvas.before:
+        Color:
+            rgba: self.icon_color if self.state == 'normal' else self._down_color
+        Ellipse:
+            pos: self.pos
+            size: self.size
+
+    size_hint: None, None
+    size: self.icon_size, self.icon_size
+    font_size: self.icon_size/2
+
+
+<XCamera>:
+    # \ue800 corresponds to the camera icon in the font
+    icon: u"[font=data/icons.ttf]\ue800[/font]"
+    icon_color: (0.13, 0.58, 0.95, 0.8)
+    icon_size: dp(70)
+
+    id: camera
+    resolution: 640, 480 # 1920, 1080
+    allow_stretch: True
+
+    # Shoot button
+    XCameraIconButton:
+        id: shoot_button
+        markup: True
+        text: root.icon
+        icon_color: root.icon_color
+        icon_size: root.icon_size
+        on_release: root.shoot()
+
+        # position
+        right: root.width - dp(10)
+        center_y: root.center_y

kivyblocks/xcamera/xcamera.py

@@ -0,0 +1,116 @@
+import datetime
+import os
+
+from kivy.clock import mainthread
+from kivy.lang import Builder
+from kivy.properties import ObjectProperty
+from kivy.resources import resource_add_path
+from kivy.uix.behaviors import ButtonBehavior
+from kivy.uix.camera import Camera
+from kivy.uix.label import Label
+from kivy.utils import platform
+
+from .platform_api import LANDSCAPE, set_orientation, take_picture
+
+ROOT = os.path.dirname(os.path.abspath(__file__))
+resource_add_path(ROOT)
+
+
+def darker(color, factor=0.5):
+    r, g, b, a = color
+    r *= factor
+    g *= factor
+    b *= factor
+    return r, g, b, a
+
+
+def get_filename():
+    return datetime.datetime.now().strftime('%Y-%m-%d %H.%M.%S.jpg')
+
+
+def is_android():
+    return platform == 'android'
+
+
+def check_camera_permission():
+    """
+    Android runtime `CAMERA` permission check.
+    """
+    if not is_android():
+        return True
+    from android.permissions import Permission, check_permission
+    permission = Permission.CAMERA
+    return check_permission(permission)
+
+
+def check_request_camera_permission(callback=None):
+    """
+    Android runtime `CAMERA` permission check & request.
+    """
+    had_permission = check_camera_permission()
+    if not had_permission:
+        from android.permissions import Permission, request_permissions
+        permissions = [Permission.CAMERA]
+        request_permissions(permissions, callback)
+    return had_permission
+
+
+class XCameraIconButton(ButtonBehavior, Label):
+    pass
+
+
+class XCamera(Camera):
+    directory = ObjectProperty(None)
+    _previous_orientation = None
+    __events__ = ('on_picture_taken', 'on_camera_ready')
+
+    def __init__(self, **kwargs):
+        Builder.load_file(os.path.join(ROOT, "xcamera.kv"))
+        super().__init__(**kwargs)
+
+    def _on_index(self, *largs):
+        """
+        Overrides `kivy.uix.camera.Camera._on_index()` to make sure
+        `camera.open()` is not called unless Android `CAMERA` permission is
+        granted, refs #5.
+        """
+        @mainthread
+        def on_permissions_callback(permissions, grant_results):
+            """
+            On camera permission callback calls parent `_on_index()` method.
+            """
+            if all(grant_results):
+                self._on_index_dispatch(*largs)
+        if check_request_camera_permission(callback=on_permissions_callback):
+            self._on_index_dispatch(*largs)
+
+    def _on_index_dispatch(self, *largs):
+        super()._on_index(*largs)
+        self.dispatch('on_camera_ready')
+
+    def on_picture_taken(self, filename):
+        """
+        This event is fired every time a picture has been taken.
+        """
+        pass
+
+    def on_camera_ready(self):
+        """
+        Fired when the camera is ready.
+        """
+        pass
+
+    def shoot(self):
+        def on_success(filename):
+            self.dispatch('on_picture_taken', filename)
+        filename = get_filename()
+        if self.directory:
+            filename = os.path.join(self.directory, filename)
+        take_picture(self, filename, on_success)
+
+    def force_landscape(self):
+        self._previous_orientation = set_orientation(LANDSCAPE)
+
+    def restore_orientation(self):
+        if self._previous_orientation is not None:
+            set_orientation(self._previous_orientation)