StatusBarHeaderView.java revision d7daab7b9e33cd56f2692b9ebea87ef21290c1ea 
1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License
15 */
16
17package com.android.systemui.statusbar.phone;
18
19import android.content.Context;
20import android.util.AttributeSet;
21import android.view.View;
22import android.view.ViewGroup;
23import android.widget.LinearLayout;
24import android.widget.RelativeLayout;
25
26import com.android.systemui.R;
27
28/**
29 * The view to manage the header area in the expanded status bar.
30 */
31public class StatusBarHeaderView extends RelativeLayout {
32
33    private boolean mExpanded;
34    private View mBackground;
35    private View mFlipper;
36
37    private int mCollapsedHeight;
38    private int mExpandedHeight;
39
40    public StatusBarHeaderView(Context context, AttributeSet attrs) {
41        super(context, attrs);
42    }
43
44    @Override
45    protected void onFinishInflate() {
46        super.onFinishInflate();
47        mBackground = findViewById(R.id.background);
48        mFlipper = findViewById(R.id.header_flipper);
49        loadDimens();
50    }
51
52    private void loadDimens() {
53        mCollapsedHeight = getResources().getDimensionPixelSize(
54                R.dimen.status_bar_header_height);
55        mExpandedHeight = getResources().getDimensionPixelSize(
56                R.dimen.status_bar_header_height_expanded);
57    }
58
59    public int getCollapsedHeight() {
60        return mCollapsedHeight;
61    }
62
63    public int getExpandedHeight() {
64        return mExpandedHeight;
65    }
66
67    public void setExpanded(boolean expanded) {
68        if (expanded != mExpanded) {
69            ViewGroup.LayoutParams lp = getLayoutParams();
70            lp.height = expanded ? mExpandedHeight : mCollapsedHeight;
71            setLayoutParams(lp);
72            mExpanded = expanded;
73        }
74    }
75
76    public void setExpansionEnabled(boolean enabled) {
77        mFlipper.setVisibility(enabled ? View.VISIBLE : View.GONE);
78    }
79
80    public void setExpansion(float height) {
81        if (height < mCollapsedHeight) {
82            height = mCollapsedHeight;
83        }
84        if (height > mExpandedHeight) {
85            height = mExpandedHeight;
86        }
87        if (mExpanded) {
88            mBackground.setTranslationY(-(mExpandedHeight - height));
89        } else {
90            mBackground.setTranslationY(0);
91        }
92    }
93
94    public View getBackgroundView() {
95        return mBackground;
96    }
97}
98