From 67f992fc57fe51a395c36d8d259803cb6168b33d Mon Sep 17 00:00:00 2001
From: vakrilov <alexander.vakrilov@telerik.com>
Date: Mon, 9 Nov 2015 16:29:21 +0200
Subject: [PATCH] Use software layer for rounded borders on android 17

---
 ui/styling/stylers.android.ts | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/ui/styling/stylers.android.ts b/ui/styling/stylers.android.ts
index 94c5881ee..56f7c461b 100644
--- a/ui/styling/stylers.android.ts
+++ b/ui/styling/stylers.android.ts
@@ -13,6 +13,8 @@ var btn;
 
 global.moduleMerge(stylersCommon, exports);
 
+var SDK = android.os.Build.VERSION.SDK_INT;
+
 var ignorePropertyHandler = new stylersCommon.StylePropertyChangedHandler(
     (view, val) => {
         // empty
@@ -51,6 +53,12 @@ function onBackgroundOrBorderPropertyChanged(v: view.View) {
         bkg.cornerRadius = v.borderRadius;
         bkg.borderColor = v.borderColor ? v.borderColor.android : android.graphics.Color.TRANSPARENT;
         bkg.background = backgroundValue;
+
+        if (SDK < 18) {
+            // Switch to software because of unsupported canvas methods if hardware acceleration is on:
+            // http://developer.android.com/guide/topics/graphics/hardware-accel.html
+            nativeView.setLayerType(android.view.View.LAYER_TYPE_SOFTWARE, null);
+        }
     }
     else {
         // reset the value with the default native value
@@ -64,6 +72,11 @@ function onBackgroundOrBorderPropertyChanged(v: view.View) {
                 nativeView.setBackground(_defaultBackgrounds.get(viewClass));
             }
         }
+
+        if (SDK < 18) {
+            // Reset layer type to hardware
+            nativeView.setLayerType(android.view.View.LAYER_TYPE_HARDWARE, null);
+        }
     }
 
     var density = utils.layout.getDisplayDensity();