Initial commit

app/src/main/java/com/termux/drawer/DrawerLayoutCompatApi21.java

@@ -0,0 +1,88 @@
+package com.termux.drawer;
+
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import android.annotation.SuppressLint;
+import android.annotation.TargetApi;
+import android.content.Context;
+import android.content.res.TypedArray;
+import android.graphics.drawable.Drawable;
+import android.os.Build;
+import android.view.Gravity;
+import android.view.View;
+import android.view.ViewGroup;
+import android.view.WindowInsets;
+
+/**
+ * Provides functionality for DrawerLayout unique to API 21
+ */
+@SuppressLint("RtlHardcoded")
+@TargetApi(Build.VERSION_CODES.LOLLIPOP)
+class DrawerLayoutCompatApi21 {
+
+	private static final int[] THEME_ATTRS = { android.R.attr.colorPrimaryDark };
+
+	public static void configureApplyInsets(DrawerLayout drawerLayout) {
+		drawerLayout.setOnApplyWindowInsetsListener(new InsetsListener());
+		drawerLayout.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN);
+	}
+
+	public static void dispatchChildInsets(View child, Object insets, int gravity) {
+		WindowInsets wi = (WindowInsets) insets;
+		if (gravity == Gravity.LEFT) {
+			wi = wi.replaceSystemWindowInsets(wi.getSystemWindowInsetLeft(), wi.getSystemWindowInsetTop(), 0, wi.getSystemWindowInsetBottom());
+		} else if (gravity == Gravity.RIGHT) {
+			wi = wi.replaceSystemWindowInsets(0, wi.getSystemWindowInsetTop(), wi.getSystemWindowInsetRight(), wi.getSystemWindowInsetBottom());
+		}
+		child.dispatchApplyWindowInsets(wi);
+	}
+
+	public static void applyMarginInsets(ViewGroup.MarginLayoutParams lp, Object insets, int gravity) {
+		WindowInsets wi = (WindowInsets) insets;
+		if (gravity == Gravity.LEFT) {
+			wi = wi.replaceSystemWindowInsets(wi.getSystemWindowInsetLeft(), wi.getSystemWindowInsetTop(), 0, wi.getSystemWindowInsetBottom());
+		} else if (gravity == Gravity.RIGHT) {
+			wi = wi.replaceSystemWindowInsets(0, wi.getSystemWindowInsetTop(), wi.getSystemWindowInsetRight(), wi.getSystemWindowInsetBottom());
+		}
+		lp.leftMargin = wi.getSystemWindowInsetLeft();
+		lp.topMargin = wi.getSystemWindowInsetTop();
+		lp.rightMargin = wi.getSystemWindowInsetRight();
+		lp.bottomMargin = wi.getSystemWindowInsetBottom();
+	}
+
+	public static int getTopInset(Object insets) {
+		return insets != null ? ((WindowInsets) insets).getSystemWindowInsetTop() : 0;
+	}
+
+	public static Drawable getDefaultStatusBarBackground(Context context) {
+		final TypedArray a = context.obtainStyledAttributes(THEME_ATTRS);
+		try {
+			return a.getDrawable(0);
+		} finally {
+			a.recycle();
+		}
+	}
+
+	static class InsetsListener implements View.OnApplyWindowInsetsListener {
+		@Override
+		public WindowInsets onApplyWindowInsets(View v, WindowInsets insets) {
+			final DrawerLayout drawerLayout = (DrawerLayout) v;
+			drawerLayout.setChildInsets(insets, insets.getSystemWindowInsetTop() > 0);
+			return insets.consumeSystemWindowInsets();
+		}
+	}
+}

app/src/main/java/com/termux/drawer/package-info.java

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+/**
+ * Extraction (and some minor cleanup to get rid of warnings) of DrawerLayout from the
+ * <a href="http://developer.android.com/tools/support-library/index.html">Android Support Library</a>.
+ * 
+ * Source at:
+ * https://android.googlesource.com/platform/frameworks/support/+/refs/heads/master/v4/java/android/support/v4/widget/DrawerLayout.java
+ * https://android.googlesource.com/platform/frameworks/support/+/refs/heads/master/v4/java/android/support/v4/widget/ViewDragHelper.java
+ */
+package com.termux.drawer;
+