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
97
98
99
100
101
102
103
104
105
106
107
|
/*
* 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.gallery3d.photoeditor.actions;
import android.content.Context;
import android.util.AttributeSet;
import com.android.gallery3d.photoeditor.PhotoView;
import com.android.gallery3d.photoeditor.filters.FlipFilter;
/**
* An action handling flip effect.
*/
public class FlipAction extends EffectAction {
private static final float DEFAULT_ANGLE = 0.0f;
private static final float DEFAULT_FLIP_SPAN = 180.0f;
public FlipAction(Context context, AttributeSet attrs) {
super(context, attrs);
}
@Override
public void prepare() {
// Disable outputting flipped results and directly flip photo-view for animations.
final FlipFilter filter = new FlipFilter();
disableFilterOutput();
final FlipView flipView = factory.createFlipView();
flipView.setOnFlipChangeListener(new FlipView.OnFlipChangeListener() {
float horizontalDegrees;
float verticalDegrees;
Runnable queuedTransform;
PhotoView photoView = factory.getPhotoView();
@Override
public void onAngleChanged(float horizontalDegrees, float verticalDegrees,
boolean fromUser) {
if (fromUser) {
this.horizontalDegrees = horizontalDegrees;
this.verticalDegrees = verticalDegrees;
transformPhotoView(horizontalDegrees, verticalDegrees);
notifyChanged(filter);
}
}
@Override
public void onStartTrackingTouch() {
// no-op
}
@Override
public void onStopTrackingTouch() {
// Round flip degrees to multiples of 180 degrees.
horizontalDegrees = roundTo180(horizontalDegrees);
verticalDegrees = roundTo180(verticalDegrees);
transformPhotoView(horizontalDegrees, verticalDegrees);
flipView.setFlippedAngles(horizontalDegrees, verticalDegrees);
// Flip the filter according to the flipped directions of flip-view.
filter.setFlip(((int) horizontalDegrees / 180) % 2 != 0,
((int) verticalDegrees / 180) % 2 != 0);
notifyChanged(filter);
}
private float roundTo180(float degrees) {
if (degrees % 180 != 0) {
degrees = Math.round(degrees / 180) * 180;
}
return degrees;
}
private void transformPhotoView(final float horizontalDegrees,
final float verticalDegrees) {
// Remove the outdated flip change before queuing a new one.
if (queuedTransform != null) {
photoView.remove(queuedTransform);
}
queuedTransform = new Runnable() {
@Override
public void run() {
photoView.flipPhoto(horizontalDegrees, verticalDegrees);
}
};
photoView.queue(queuedTransform);
}
});
flipView.setFlippedAngles(DEFAULT_ANGLE, DEFAULT_ANGLE);
flipView.setFlipSpan(DEFAULT_FLIP_SPAN);
}
}
|
