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app/src/main/java/com/hippo/widget/DrawerFrameLayout.java

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+/*
+ * Copyright (C) 2015 Hippo Seven
+ *
+ * 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
+ * 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.
+ */
+
+package com.hippo.widget;
+
+import android.annotation.TargetApi;
+import android.content.Context;
+import android.content.res.TypedArray;
+import android.os.Build;
+import android.util.AttributeSet;
+import android.widget.FrameLayout;
+
+public class DrawerFrameLayout extends FrameLayout {
+
+    private static final int[] MAX_ATTRS = {android.R.attr.maxWidth};
+
+    private int mMaxWidth = -1;
+
+    public DrawerFrameLayout(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        init(context, attrs, 0, 0);
+    }
+
+    public DrawerFrameLayout(Context context, AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+        init(context, attrs, defStyleAttr, 0);
+    }
+
+    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
+    public DrawerFrameLayout(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
+        super(context, attrs, defStyleAttr, defStyleRes);
+        init(context, attrs, defStyleAttr, defStyleRes);
+    }
+
+    private void init(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
+        final TypedArray a = context.obtainStyledAttributes(attrs, MAX_ATTRS, defStyleAttr, defStyleRes);
+        mMaxWidth = a.getDimensionPixelSize(0, -1);
+        a.recycle();
+    }
+
+    @Override
+    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+        int widthSpecSize = MeasureSpec.getSize(widthMeasureSpec);
+
+        if (mMaxWidth > 0) {
+            widthSpecSize = Math.min(mMaxWidth, widthSpecSize);
+            widthMeasureSpec = MeasureSpec.makeMeasureSpec(widthSpecSize,
+                    MeasureSpec.EXACTLY);
+        }
+
+        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
+    }
+}