blob: 75db25441c01e7ea69ba0a0e7a5e54927b482603 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
|
/*
* Copyright (C) 2010 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.android.camera.ui;
import com.android.camera.R;
import android.content.Context;
import android.os.Handler;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
/**
* A class to increase or decrease zoom
*/
public class ZoomPicker extends ZoomControl {
private final String TAG = "ZoomPicker";
private View mIncrementButton;
private View mDecrementButton;
private int mState = ZOOM_STOP;
private Handler mHandler;
public ZoomPicker(Context context, AttributeSet attrs) {
super(context, attrs);
}
private final Runnable mRunnable = new Runnable() {
public void run() {
if (zooming()) mHandler.postDelayed(this, 65);
}
};
private boolean zooming() {
switch (mState) {
case ZOOM_IN:
return zoomIn();
case ZOOM_OUT:
return zoomOut();
default:
return false;
}
}
@Override
public void initialize(Context context) {
final View increment = getRootView().findViewById(R.id.zoom_increment);
final View decrement = getRootView().findViewById(R.id.zoom_decrement);
mHandler = new Handler();
OnTouchListener touchListener = new OnTouchListener() {
public boolean onTouch(View v, MotionEvent event) {
int action = event.getAction();
if (action == MotionEvent.ACTION_DOWN) {
mState = (v == increment) ? ZOOM_IN : ZOOM_OUT;
if (zooming()) mHandler.postDelayed(mRunnable, 300);
} else if (action == MotionEvent.ACTION_UP
|| action == MotionEvent.ACTION_CANCEL) {
mState = ZOOM_STOP;
stopZooming();
}
return false;
}
};
mIncrementButton = increment;
mIncrementButton.setOnTouchListener(touchListener);
mIncrementButton.setVisibility(View.VISIBLE);
mDecrementButton = decrement;
mDecrementButton.setOnTouchListener(touchListener);
mDecrementButton.setVisibility(View.VISIBLE);
}
public void setEnabled(boolean enabled) {
mIncrementButton.setEnabled(enabled);
mDecrementButton.setEnabled(enabled);
}
}
|
