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
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
/*
* Copyright (C) 2014 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.launcher3;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Rect;
import android.view.View;
import android.view.ViewDebug;
import android.view.ViewGroup;
public class ClickShadowView extends View {
private static final int SHADOW_SIZE_FACTOR = 3;
private static final int SHADOW_LOW_ALPHA = 30;
private static final int SHADOW_HIGH_ALPHA = 60;
private final Paint mPaint;
@ViewDebug.ExportedProperty(category = "launcher")
private final float mShadowOffset;
@ViewDebug.ExportedProperty(category = "launcher")
private final float mShadowPadding;
private Bitmap mBitmap;
public ClickShadowView(Context context) {
super(context);
mPaint = new Paint(Paint.FILTER_BITMAP_FLAG);
mPaint.setColor(Color.BLACK);
mShadowPadding = getResources().getDimension(R.dimen.blur_size_click_shadow);
mShadowOffset = getResources().getDimension(R.dimen.click_shadow_high_shift);
}
/**
* @return extra space required by the view to show the shadow.
*/
public int getExtraSize() {
return (int) (SHADOW_SIZE_FACTOR * mShadowPadding);
}
/**
* Applies the new bitmap.
* @return true if the view was invalidated.
*/
public boolean setBitmap(Bitmap b) {
if (b != mBitmap){
mBitmap = b;
invalidate();
return true;
}
return false;
}
@Override
protected void onDraw(Canvas canvas) {
if (mBitmap != null) {
mPaint.setAlpha(SHADOW_LOW_ALPHA);
canvas.drawBitmap(mBitmap, 0, 0, mPaint);
mPaint.setAlpha(SHADOW_HIGH_ALPHA);
canvas.drawBitmap(mBitmap, 0, mShadowOffset, mPaint);
}
}
public void animateShadow() {
setAlpha(0);
animate().alpha(1)
.setDuration(FastBitmapDrawable.CLICK_FEEDBACK_DURATION)
.setInterpolator(FastBitmapDrawable.CLICK_FEEDBACK_INTERPOLATOR)
.start();
}
/**
* Aligns the shadow with {@param view}
* @param viewParent immediate parent of {@param view}. It must be a sibling of this view.
*/
public void alignWithIconView(BubbleTextView view, ViewGroup viewParent, View clipAgainstView) {
float leftShift = view.getLeft() + viewParent.getLeft() - getLeft();
float topShift = view.getTop() + viewParent.getTop() - getTop();
int iconWidth = view.getRight() - view.getLeft();
int iconHeight = view.getBottom() - view.getTop();
int iconHSpace = iconWidth - view.getCompoundPaddingRight() - view.getCompoundPaddingLeft();
float drawableWidth = view.getIcon().getBounds().width();
if (clipAgainstView != null) {
// Set the bounds to clip against
int[] coords = new int[] {0, 0};
Utilities.getDescendantCoordRelativeToAncestor(clipAgainstView, (View) getParent(),
coords, false);
int clipLeft = (int) Math.max(0, coords[0] - leftShift - mShadowPadding);
int clipTop = (int) Math.max(0, coords[1] - topShift - mShadowPadding) ;
setClipBounds(new Rect(clipLeft, clipTop, clipLeft + iconWidth, clipTop + iconHeight));
} else {
// Reset the clip bounds
setClipBounds(null);
}
setTranslationX(leftShift
+ viewParent.getTranslationX()
+ view.getCompoundPaddingLeft() * view.getScaleX()
+ (iconHSpace - drawableWidth) * view.getScaleX() / 2 /* drawable gap */
+ iconWidth * (1 - view.getScaleX()) / 2 /* gap due to scale */
- mShadowPadding /* extra shadow size */
);
setTranslationY(topShift
+ viewParent.getTranslationY()
+ view.getPaddingTop() * view.getScaleY() /* drawable gap */
+ view.getHeight() * (1 - view.getScaleY()) / 2 /* gap due to scale */
- mShadowPadding /* extra shadow size */
);
}
}
|
