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
|
/*
* Copyright (C) 2011 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.swe.browser.view;
import com.android.swe.browser.R;
import android.content.Context;
import android.graphics.Canvas;
import android.view.View;
/**
* shows views in a stack
*/
public class PieStackView extends BasePieView {
private static final int SLOP = 5;
private OnCurrentListener mCurrentListener;
private int mMinHeight;
public interface OnCurrentListener {
public void onSetCurrent(int index);
}
public PieStackView(Context ctx) {
mMinHeight = (int) ctx.getResources()
.getDimension(R.dimen.qc_tab_title_height);
}
public void setOnCurrentListener(OnCurrentListener l) {
mCurrentListener = l;
}
@Override
public void setCurrent(int ix) {
super.setCurrent(ix);
if (mCurrentListener != null) {
mCurrentListener.onSetCurrent(ix);
}
}
/**
* this will be called before the first draw call
*/
@Override
public void layout(int anchorX, int anchorY, boolean left, float angle,
int pHeight) {
super.layout(anchorX, anchorY, left, angle, pHeight);
buildViews();
mWidth = mChildWidth;
mHeight = mChildHeight + (mViews.size() - 1) * mMinHeight;
mLeft = anchorX + (left ? SLOP : -(SLOP + mChildWidth));
mTop = anchorY - mHeight / 2;
if (mViews != null) {
layoutChildrenLinear();
}
}
private void layoutChildrenLinear() {
final int n = mViews.size();
int top = mTop;
int dy = (n == 1) ? 0 : (mHeight - mChildHeight) / (n - 1);
for (View view : mViews) {
int x = mLeft;
view.layout(x, top, x + mChildWidth, top + mChildHeight);
top += dy;
}
}
@Override
public void draw(Canvas canvas) {
if ((mViews != null) && (mCurrent > -1)) {
final int n = mViews.size();
for (int i = 0; i < mCurrent; i++) {
drawView(mViews.get(i), canvas);
}
for (int i = n - 1; i > mCurrent; i--) {
drawView(mViews.get(i), canvas);
}
drawView(mViews.get(mCurrent), canvas);
}
}
@Override
protected int findChildAt(int y) {
final int ix = (y - mTop) * mViews.size() / mHeight;
return ix;
}
}
|
