From 8b0edbcaedf80d9b280126ccadc3024b24961b83 Mon Sep 17 00:00:00 2001
From: yumoqing <yumoqing@gmail.com>
Date: Tue, 1 Dec 2020 15:22:38 +0800
Subject: [PATCH] bugfix

---
 kivyblocks/twosides.py | 60 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100644 kivyblocks/twosides.py

diff --git a/kivyblocks/twosides.py b/kivyblocks/twosides.py
new file mode 100644
index 0000000..5101601
--- /dev/null
+++ b/kivyblocks/twosides.py
@@ -0,0 +1,60 @@
+from kivy.clock import Clock
+from kivy.uix.boxlayout import BoxLayout
+from kivy.factory import Factory
+
+from kivyblocks.ready import WidgetReady
+
+class TwoSides(WidgetReady, BoxLayout):
+	def __init__(self,landscape={},portrait={},**kw):
+		BoxLayout.__init__(self,**kw)
+		WidgetReady.__init__(self)
+		self.parenturl = kw.get('parenturl')
+		self.landscape_built = False
+		self.portrait_built = False
+		self.landscape_widget = None
+		self.portrait_widget = None
+		blocks = Factory.Blocks()
+		blocks.bind(on_built=self.landscape_build)
+		blocks.widgetBuild(landscape)
+		blocks = Factory.Blocks()
+		blocks.bind(on_built=self.portrait_build)
+		blocks.widgetBuild(portrait)
+		self.on_size_task = None
+		self.ready_task = None
+
+	def ready(self, *args):
+		if self._ready:
+			return
+		if not self.landscape_built or not self.portrait_built:
+			if not self.ready_task is None:
+				self.ready_task.cancel()
+			self.ready_task = Clock.schedule_once(self.ready,0.2)
+			return 
+		self.dispatch('on_ready')
+		self._ready = True
+
+	def landscape_build(self,o,w):
+		self.landscape_widget = w
+		self.landscape_built = True
+
+	def portrait_build(self,o,w):
+		self.portrait_widget = w
+		self.portrait_built = True
+
+	def on_size(self,*args):
+		if not self.landscape_built or not self.portrait_built:
+			if not self.on_size_task is None:
+				self.on_size_task.cancel()
+			self.on_size_task = Clock.schedule_once(self.on_size,0.2)
+			return
+		if self.width >= self.height:
+			if not self.landscape_widget in self.children:
+				self.clear_widgets()
+				self.add_widget(self.landscape_widget)
+		else:
+			if not self.portrait_widget in self.children:
+				self.clear_widgets()
+				self.add_widget(self.portrait_widget)
+
+
+Factory.register('TwoSides',TwoSides)