android version:

- screen rotation lock added as proposed by issue #320
- triggered (maybe experimental) by a long tap (5 seconds) to the play ground.

pysollib/kivy/LApp.py

@@ -51,8 +51,10 @@
 from kivy.uix.treeview import TreeViewLabel
 from kivy.uix.widget import Widget
 from kivy.utils import platform
+from kivy.properties import NumericProperty
 
 from pysollib.kivy.androidperms import requestStoragePerm
+from pysollib.kivy.androidrot import AndroidScreenRotation
 from pysollib.resource import CSI
 
 if platform != 'android':
@@ -1583,6 +1585,9 @@ def size(self):
 
 
 class LMainWindow(BoxLayout, LTkBase):
+
+    longPress = NumericProperty(0)
+
     def __init__(self, **kw):
         super(LMainWindow, self).__init__(orientation='vertical')
         LTkBase.__init__(self)
@@ -1680,6 +1685,14 @@ def on_touch_down(self, touch):
 
     def on_touch_up(self, touch):
         ret = False
+        # long press only on playground.
+        pgs = self.workStack.peek('playground')
+        if pgs:
+            pg = pgs[1]
+            if pg.collide_point(*touch.pos):
+                if (touch.time_end-touch.time_start) > 4.5:
+                    self.longPress = touch.time_end
+
         # standard notifikation:
         for c in self.children:
             ret = c.on_touch_up(touch)
@@ -1693,6 +1706,10 @@ def on_touch_up(self, touch):
         '''
         return ret
 
+    def on_longPress(self, instance, timestamp):
+        print('longPressed at {time}'.format(time=timestamp))
+        AndroidScreenRotation.toggle()
+
     # Menubar:
 
     def setMenu(self, menu):
@@ -1914,6 +1931,8 @@ def on_resume(self):
         if app is None:
             return
 
+        AndroidScreenRotation.unlock()
+
         so = get_screen_ori()
         go = so  # flake8: F841 nonsense!
         so = go

pysollib/kivy/androidrot.py

@@ -0,0 +1,46 @@
+# flake8: noqa
+# LB230914.
+
+from pysollib.kivy.androidtoast import AndroidToaster
+from pysollib.mygettext import _
+try:
+    import jnius
+except ImportError:
+    jnius = None
+
+class AndroidRot(object):
+    def __init__(self):
+        self.locked = False
+        if jnius is None:
+            return
+        self.PythonActivity = jnius.autoclass('org.kivy.android.PythonActivity')
+        self.ActivityInfo = jnius.autoclass('android.content.pm.ActivityInfo')
+        self.currentActivity = jnius.cast('android.app.Activity', self.PythonActivity.mActivity)
+
+    def isLocked(self):
+        return self.locked
+
+    def lock(self):
+        if jnius is not None:
+            self.currentActivity.setRequestedOrientation(
+                self.ActivityInfo.SCREEN_ORIENTATION_LOCKED)
+        self.locked = True
+
+    def unlock(self):
+        if jnius is not None:
+            self.currentActivity.setRequestedOrientation(
+                self.ActivityInfo.SCREEN_ORIENTATION_FULL_SENSOR)
+        self.locked = False
+
+    def toggle(self):
+        if self.locked:
+            self.unlock()
+            if jnius is not None:
+                AndroidToaster.toastShort(_("screen rotation enabled"))
+        else:
+            self.lock()
+            if jnius is not None:
+                AndroidToaster.toastShort(_("screen rotation disabled"))
+        return self.isLocked()
+
+AndroidScreenRotation = AndroidRot()

pysollib/kivy/androidtoast.py

@@ -0,0 +1,37 @@
+# flake8: noqa
+# LB230914.
+
+try:
+    import jnius
+    from android.runnable import run_on_ui_thread
+except ImportError:
+    jnius = None
+    def run_on_ui_thread(a):
+        pass
+
+class AndroidToast(object):
+    def __init__(self):
+        if jnius is None:
+            return
+        self.PythonActivity = jnius.autoclass('org.kivy.android.PythonActivity')
+        self.Toast = jnius.autoclass('android.widget.Toast')
+        self.String = jnius.autoclass('java.lang.String')
+        self.context = self.PythonActivity.mActivity
+
+    @run_on_ui_thread
+    def toastShort(self, message):
+        if jnius is not None:
+            jtext = jnius.cast('java.lang.CharSequence', self.String(message))
+            toast = self.Toast.makeText(
+                self.context, jtext, self.Toast.LENGTH_SHORT)
+            toast.show()
+
+    @run_on_ui_thread
+    def toastLong(self, message):
+        if jnius is not None:
+            jtext = jnius.cast('java.lang.CharSequence', self.String(message))
+            toast = self.Toast.makeText(
+                self.context, jtext, self.Toast.LENGTH_LONG)
+            toast.show()
+
+AndroidToaster = AndroidToast()