优化Eink主题效果: 1.移除Eink主题时dialog及UI控件阴影; 2.Eink主题时dialog增加边框. (#4386)

* 优化Eink主题效果: 1.移除Eink主题时dialog及UI控件阴影; 2.Eink主题时dialog增加边框.

* fix: 2处与全局不一致的UI效果

app/src/main/res/drawable/bg_eink_border_bottom.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item>
+        <shape>
+            <!--    边框颜色    -->
+            <solid android:color="@color/divider" />
+        </shape>
+    </item>
+    <!--    边框位置和粗细    -->
+    <item android:bottom="1dp">
+        <shape>
+            <!--    背景颜色    -->
+            <solid android:color="@color/white" />
+        </shape>
+    </item>
+</layer-list>

app/src/main/res/drawable/bg_eink_border_dialog.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+    <solid android:color="@color/white" />
+    <stroke
+        android:width="1dp"
+        android:color="@color/divider" />
+    <corners android:radius="2dp" />
+</shape>

app/src/main/res/drawable/bg_eink_border_top.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item>
+        <shape>
+            <!--    边框颜色    -->
+            <solid android:color="@color/divider" />
+        </shape>
+    </item>
+    <!--    边框位置和粗细    -->
+    <item android:top="1dp">
+        <shape>
+            <!--    背景颜色    -->
+            <solid android:color="@color/white" />
+        </shape>
+    </item>
+</layer-list>