SecondLevelIndicatorControlBar.java revision db3556078a75be0bd4a08195d90f060724034e88 
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    public void initialize(Context context, PreferenceGroup group,
44            String[] keys, String[] otherSettingKeys) {
45        if (mCloseIcon == null) {
46            mCloseIcon = new ColorFilterImageView(context);
47            mCloseIcon.setImageResource(R.drawable.btn_close_settings);
48            mCloseIcon.setOnClickListener(this);
49            addView(mCloseIcon);
50        }
51        setPreferenceGroup(group);
52        addControls(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 (height == 0) return false; // the event is sent before onMeasure()
73        if (x > getWidth()) x = getWidth();
74        if (y >= height) y = height - 1;
75
76        int index = (int) (y * getChildCount()) / height;
77        View b = getChildAt(index);
78        b.dispatchTouchEvent(event);
79        if ((mSelectedIndex != -1) && (index != mSelectedIndex)) {
80            View v = getChildAt(mSelectedIndex);
81            if (v instanceof AbstractIndicatorButton) {
82                AbstractIndicatorButton c = (AbstractIndicatorButton) v;
83                event.setAction(MotionEvent.ACTION_CANCEL);
84                c.dispatchTouchEvent(event);
85                c.dismissPopup();
86            }
87
88            if (action == MotionEvent.ACTION_MOVE) {
89                event.setAction(MotionEvent.ACTION_DOWN);
90                b.dispatchTouchEvent(event);
91            }
92        }
93        mSelectedIndex = index;
94        return true;
95    }
96
97    @Override
98    public void setDegree(int degree) {
99        mDegree = degree;
100        super.setDegree(degree);
101    }
102
103    @Override
104    protected void onLayout(
105            boolean changed, int left, int top, int right, int bottom) {
106        int count = getChildCount();
107        if (count == 0) return;
108        int width = right - left;
109        int height = bottom - top;
110        int h = height / count;
111
112        // TODO: follow the redlines of UI design in next change. The icons are
113        // simply distributed on the bar equally with current implmentation.
114        for (int i = 0; i < count; i++) {
115            getChildAt(i).layout(0, i * h,  width, (i + 1) * h);
116        }
117    }
118
119    @Override
120    public void setEnabled(boolean enabled) {
121        super.setEnabled(enabled);
122        if (mCurrentMode == MODE_VIDEO) {
123            mCloseIcon.setVisibility(enabled ? View.VISIBLE : View.INVISIBLE);
124        }
125        mCloseIcon.setEnabled(enabled);
126    }
127}
128