SecondLevelIndicatorControlBar.java revision ff45331706e2fe361b4ff736d90b0ad4af0e7be9 
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 camera setting indicators which are spread over a
30 * vertical bar in preview frame.
31 */
32public class SecondLevelIndicatorControlBar extends IndicatorControl implements
33        View.OnClickListener {
34    private static final String TAG = "SecondLevelIndicatorControlBar";
35    private ImageView mCloseIcon;
36    int mDegree = 0;
37    int mSelectedIndex = -1;
38
39    public SecondLevelIndicatorControlBar(Context context, AttributeSet attrs) {
40        super(context, attrs);
41    }
42
43    @Override
44    public void initialize(Context context, PreferenceGroup group,
45            String[] keys, String[] otherSettingKeys) {
46        if (mCloseIcon == null) {
47            mCloseIcon = new ImageView(context);
48            mCloseIcon.setImageResource(R.drawable.btn_close_settings);
49            mCloseIcon.setOnClickListener(this);
50            addView(mCloseIcon);
51        }
52        super.initialize(context, group, keys, otherSettingKeys);
53        if (mDegree != 0) setDegree(mDegree);
54    }
55
56    public void onClick(View view) {
57        dismissSettingPopup();
58        mOnIndicatorEventListener.onIndicatorEvent(
59                    OnIndicatorEventListener.EVENT_LEAVE_SECOND_LEVEL_INDICATOR_BAR);
60    }
61
62    @Override
63    public boolean dispatchTouchEvent(MotionEvent event) {
64        if (!onFilterTouchEventForSecurity(event)) return false;
65
66        int action = event.getAction();
67        if (!isEnabled()) return false;
68
69        double x = (double) event.getX();
70        double y = (double) event.getY();
71        int height = getHeight();
72        if (x > getWidth()) x = getWidth();
73        if (y >= height) y = height - 1;
74
75        int index = (int) (y * getChildCount()) / height;
76        View b = getChildAt(index);
77        b.dispatchTouchEvent(event);
78        if ((mSelectedIndex != -1) && (index != mSelectedIndex)) {
79            View v = getChildAt(mSelectedIndex);
80            if (v instanceof AbstractIndicatorButton) {
81                AbstractIndicatorButton c = (AbstractIndicatorButton) v;
82                event.setAction(MotionEvent.ACTION_CANCEL);
83                c.dispatchTouchEvent(event);
84                c.dismissPopup();
85            }
86
87            if (action == MotionEvent.ACTION_MOVE) {
88                event.setAction(MotionEvent.ACTION_DOWN);
89                b.dispatchTouchEvent(event);
90            }
91        }
92        mSelectedIndex = index;
93        return true;
94    }
95
96    @Override
97    public void setDegree(int degree) {
98        mDegree = degree;
99        super.setDegree(degree);
100    }
101
102    @Override
103    protected void onLayout(
104            boolean changed, int left, int top, int right, int bottom) {
105        int count = getChildCount();
106        if (count == 0) return;
107        int width = right - left;
108        int height = bottom - top;
109        int h = height / count;
110        for (int i = 0; i < count; i++) {
111            getChildAt(i).layout(0, top + i * height / count, width,
112                    top + i * height / count + h);
113        }
114    }
115}
116