1/*
2 * Copyright (C) 2013 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.datetimepicker.date;
18
19import android.content.Context;
20import android.content.res.Resources;
21import android.graphics.Canvas;
22import android.graphics.Paint;
23import android.graphics.Paint.Align;
24import android.graphics.Paint.Style;
25import android.text.format.DateUtils;
26import android.util.AttributeSet;
27import android.view.accessibility.AccessibilityEvent;
28import android.widget.TextView;
29
30import com.android.datetimepicker.R;
31
32/**
33 * A text view which, when pressed or activated, displays a blue circle around the text.
34 */
35public class TextViewWithCircularIndicator extends TextView {
36
37    private static final int SELECTED_CIRCLE_ALPHA = 60;
38
39    Paint mCirclePaint = new Paint();
40
41    private final int mRadius;
42    private final int mCircleColor;
43    private final String mItemIsSelectedText;
44
45    private boolean mDrawCircle;
46
47    public TextViewWithCircularIndicator(Context context, AttributeSet attrs) {
48        super(context, attrs);
49        Resources res = context.getResources();
50        mCircleColor = res.getColor(R.color.blue);
51        mRadius = res.getDimensionPixelOffset(R.dimen.month_select_circle_radius);
52        mItemIsSelectedText = context.getResources().getString(R.string.item_is_selected);
53
54        init();
55    }
56
57    private void init() {
58        mCirclePaint.setFakeBoldText(true);
59        mCirclePaint.setAntiAlias(true);
60        mCirclePaint.setColor(mCircleColor);
61        mCirclePaint.setTextAlign(Align.CENTER);
62        mCirclePaint.setStyle(Style.FILL);
63        mCirclePaint.setAlpha(SELECTED_CIRCLE_ALPHA);
64    }
65
66    public void drawIndicator(boolean drawCircle) {
67        mDrawCircle = drawCircle;
68    }
69
70    @Override
71    public void onDraw(Canvas canvas) {
72        super.onDraw(canvas);
73        if (mDrawCircle) {
74            final int width = getWidth();
75            final int height = getHeight();
76            int radius = Math.min(width, height) / 2;
77            canvas.drawCircle(width / 2, height / 2, radius, mCirclePaint);
78        }
79    }
80
81    @Override
82    public CharSequence getContentDescription() {
83        CharSequence itemText = getText();
84        if (mDrawCircle) {
85            return String.format(mItemIsSelectedText, itemText);
86        } else {
87            return itemText;
88        }
89    }
90}
91