Improve gallery

2016-02-21 23:44:10 +08:00
1 parent 56c95740df
commit 9a18ad543a
@@ -0,0 +1,93 @@
+/*
+ * 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.
+ */
+
+package com.hippo.util;
+
+import android.annotation.TargetApi;
+import android.app.ActionBar;
+import android.app.Activity;
+import android.os.Build;
+import android.view.View;
+import android.view.WindowManager;
+
+@TargetApi(Build.VERSION_CODES.HONEYCOMB)
+class SystemUiHelperImplHC extends SystemUiHelper.SystemUiHelperImpl
+        implements View.OnSystemUiVisibilityChangeListener {
+
+    final View mDecorView;
+
+    SystemUiHelperImplHC(Activity activity, int level, int flags,
+            SystemUiHelper.OnVisibilityChangeListener onVisibilityChangeListener) {
+        super(activity, level, flags, onVisibilityChangeListener);
+
+        mDecorView = activity.getWindow().getDecorView();
+        mDecorView.setOnSystemUiVisibilityChangeListener(this);
+    }
+
+
+    @Override
+    void show() {
+        mDecorView.setSystemUiVisibility(createShowFlags());
+    }
+
+    @Override
+    void hide() {
+        mDecorView.setSystemUiVisibility(createHideFlags());
+    }
+
+    @Override
+    public final void onSystemUiVisibilityChange(int visibility) {
+        if ((visibility & createTestFlags()) != 0) {
+            onSystemUiHidden();
+        } else {
+            onSystemUiShown();
+        }
+    }
+
+    protected void onSystemUiShown() {
+        ActionBar ab = mActivity.getActionBar();
+        if (ab != null) {
+            ab.show();
+        }
+
+        mActivity.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
+
+        setIsShowing(true);
+    }
+
+    protected void onSystemUiHidden() {
+        ActionBar ab = mActivity.getActionBar();
+        if (ab != null) {
+            ab.hide();
+        }
+
+        mActivity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
+
+        setIsShowing(false);
+    }
+
+    protected int createShowFlags() {
+       return View.STATUS_BAR_VISIBLE;
+    }
+
+    protected int createHideFlags() {
+        return View.STATUS_BAR_HIDDEN;
+    }
+
+    protected int createTestFlags() {
+        return View.STATUS_BAR_HIDDEN;
+    }
+}