From 973edd5af2744704cd43e3401bb62a1e93d1e2bc Mon Sep 17 00:00:00 2001
From: yumoqing <yumoqing@gmail.com>
Date: Wed, 4 Nov 2020 09:23:32 +0800
Subject: [PATCH] bugfix

---
 kivyblocks/doubleface.py | 41 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 kivyblocks/doubleface.py

diff --git a/kivyblocks/doubleface.py b/kivyblocks/doubleface.py
new file mode 100644
index 0000000..b357b2c
--- /dev/null
+++ b/kivyblocks/doubleface.py
@@ -0,0 +1,41 @@
+from kivy.uix.boxlayout import BoxLayout
+from kivy.factory import Factory
+
+class DoubleFace(BoxLayout):
+	def __init__(self,landscape={},portrait={},**kw):
+		BoxLayout.__init__(self,**kw)
+		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_built)
+		blocks.widgetBuilt(landscape,ancestor=self)
+		blocks = Factory.Blocks()
+		blocks.bind(on_built=self.portrait_built)
+		blocks.widgetBuild(portrait,ancestor=self)
+		self.on_size_task = None
+
+	def landscape_built(self,o,w):
+		self.landscape_widget = w
+		self.landscape_built = True
+
+	def partrait_built(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.schedule_once(self.on_size,0.2)
+			return
+		if self.width >= self.height:
+			if not self.landscape_widget in self.children:
+				self.clear_widget()
+				self.add_widget(self.landscape_widget)
+		else:
+			if not self.portrait_widget in self.children:
+				self.clear_widget()
+				self.add_widget(self.portrait_widget)
+