1/*
2 * Copyright (C) 2011 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.settings.widget;
18
19import android.content.res.Resources;
20import android.text.SpannableStringBuilder;
21
22/**
23 * Utility to invert another {@link ChartAxis}.
24 */
25public class InvertedChartAxis implements ChartAxis {
26    private final ChartAxis mWrapped;
27    private float mSize;
28
29    public InvertedChartAxis(ChartAxis wrapped) {
30        mWrapped = wrapped;
31    }
32
33    @Override
34    public boolean setBounds(long min, long max) {
35        return mWrapped.setBounds(min, max);
36    }
37
38    @Override
39    public boolean setSize(float size) {
40        mSize = size;
41        return mWrapped.setSize(size);
42    }
43
44    @Override
45    public float convertToPoint(long value) {
46        return mSize - mWrapped.convertToPoint(value);
47    }
48
49    @Override
50    public long convertToValue(float point) {
51        return mWrapped.convertToValue(mSize - point);
52    }
53
54    @Override
55    public long buildLabel(Resources res, SpannableStringBuilder builder, long value) {
56        return mWrapped.buildLabel(res, builder, value);
57    }
58
59    @Override
60    public float[] getTickPoints() {
61        final float[] points = mWrapped.getTickPoints();
62        for (int i = 0; i < points.length; i++) {
63            points[i] = mSize - points[i];
64        }
65        return points;
66    }
67
68    @Override
69    public int shouldAdjustAxis(long value) {
70        return mWrapped.shouldAdjustAxis(value);
71    }
72}
73