IndicatorControlBar.java revision ab2ffa88872149978823c3184d0af162d3cdca13 
1/*
2 * Copyright (C) 2010 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.camera.ui;
18
19import com.android.camera.PreferenceGroup;
20import com.android.camera.R;
21
22import android.content.Context;
23import android.util.AttributeSet;
24import android.view.MotionEvent;
25import android.view.View;
26import android.widget.ImageView;
27
28/**
29 * A view that contains the top-level indicator control.
30 */
31public class IndicatorControlBar extends IndicatorControl implements
32        View.OnClickListener, View.OnTouchListener {
33    private static final String TAG = "IndicatorControlBar";
34
35    private ImageView mZoomIcon;
36    private ImageView mSecondLevelIcon;
37
38    public IndicatorControlBar(Context context, AttributeSet attrs) {
39        super(context, attrs);
40    }
41
42    public void initialize(Context context, PreferenceGroup group,
43            String flashSetting, boolean zoomSupported) {
44        // From UI spec, we have camera_flash setting on the first level.
45        setPreferenceGroup(group);
46        addControls(new String[] {flashSetting}, null);
47
48        // Add CameraPicker control.
49        initializeCameraPicker();
50
51        // add Zoom Icon.
52        if (zoomSupported) {
53            mZoomIcon = (ImageView) findViewById(R.id.zoom_control_icon);
54            mZoomIcon.setOnTouchListener(this);
55            mZoomIcon.setVisibility(View.VISIBLE);
56        }
57
58        mSecondLevelIcon = (ImageView) findViewById(R.id.second_level_indicator_bar_icon);
59        mSecondLevelIcon.setOnClickListener(this);
60        requestLayout();
61    }
62
63    public boolean onTouch(View v, MotionEvent event) {
64        dismissSettingPopup();
65        if (event.getAction() == MotionEvent.ACTION_DOWN) {
66            mOnIndicatorEventListener.onIndicatorEvent(
67                    OnIndicatorEventListener.EVENT_ENTER_ZOOM_CONTROL);
68            return true;
69        }
70        return false;
71    }
72
73    public void onClick(View view) {
74        dismissSettingPopup();
75        // Only for the click on mSecondLevelIcon.
76        mOnIndicatorEventListener.onIndicatorEvent(
77                OnIndicatorEventListener.EVENT_ENTER_SECOND_LEVEL_INDICATOR_BAR);
78    }
79
80    @Override
81    protected void onLayout(
82            boolean changed, int left, int top, int right, int bottom) {
83        // Layout the static components.
84        super.onLayout(changed, left, top, right, bottom);
85
86        int count = getChildCount();
87        if (count == 0) return;
88        int width = right - left;
89        int offset = 0;
90
91        for (int i = 0 ; i < count ; i++) {
92            View view = getChildAt(i);
93            if (view instanceof IndicatorButton) {
94                view.layout(0, offset, width, offset + width);
95                offset += width;
96            }
97        }
98        if (mCameraPicker != null) mCameraPicker.layout(0, offset, width, offset + width);
99    }
100}
101