/*
* Copyright (C) 2013 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 org.holoeverywhere.widget.datetimepicker.time;
import android.content.Context;
import android.content.res.ColorStateList;
import android.content.res.Resources;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Paint.Align;
import android.util.AttributeSet;
import android.util.Log;
import android.view.View;
import org.holoeverywhere.FontLoader;
import org.holoeverywhere.R;
import java.text.DateFormatSymbols;
/**
* Draw the two smaller AM and PM circles next to where the larger circle will be.
*/
public class AmPmCirclesView extends View {
private static final String TAG = "AmPmCirclesView";
private static final int AM = TimePickerDialog.AM;
private static final int PM = TimePickerDialog.PM;
private final Paint mPaint = new Paint();
private int mAmPmTextColor;
private float mCircleRadiusMultiplier;
private float mAmPmCircleRadiusMultiplier;
private String mAmText;
private String mPmText;
private boolean mIsInitialized;
private boolean mDrawValuesReady;
private int mAmPmCircleRadius;
private int mAmXCenter;
private int mPmXCenter;
private int mAmPmYCenter;
private int mAmOrPm;
private int mAmOrPmPressed;
private ColorStateList mCircleBackground;
private int mCircleBackgroundDefault;
public AmPmCirclesView(Context context) {
this(context, null);
}
public AmPmCirclesView(Context context, AttributeSet attrs) {
this(context, attrs, R.attr.dateTimePickerStyle);
}
public AmPmCirclesView(Context context, AttributeSet attrs, int defStyle) {
super(context);
mIsInitialized = false;
TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.DateTimePicker, defStyle, R.style.Holo_DateTimePicker);
mCircleBackground = a.getColorStateList(R.styleable.DateTimePicker_timeAmPmPicker);
mCircleBackgroundDefault = a.getColor(R.styleable.DateTimePicker_timeAmPmPickerBackground, 0);
mAmPmTextColor = a.getColor(R.styleable.DateTimePicker_timeAmPmPickerTextColor, 0);
a.recycle();
}
public void initialize(int amOrPm) {
if (mIsInitialized) {
Log.e(TAG, "AmPmCirclesView may only be initialized once.");
return;
}
Resources res = getContext().getResources();
mPaint.setTypeface(FontLoader.ROBOTO_REGULAR.getTypeface(getContext()));
mPaint.setAntiAlias(true);
mPaint.setTextAlign(Align.CENTER);
mCircleRadiusMultiplier =
Float.parseFloat(res.getString(R.string.time_circle_radius_multiplier));
mAmPmCircleRadiusMultiplier =
Float.parseFloat(res.getString(R.string.time_ampm_circle_radius_multiplier));
String[] amPmTexts = new DateFormatSymbols().getAmPmStrings();
mAmText = amPmTexts[0];
mPmText = amPmTexts[1];
setAmOrPm(amOrPm);
mAmOrPmPressed = -1;
mIsInitialized = true;
}
public void setAmOrPm(int amOrPm) {
mAmOrPm = amOrPm;
}
public void setAmOrPmPressed(int amOrPmPressed) {
mAmOrPmPressed = amOrPmPressed;
}
/**
* Calculate whether the coordinates are touching the AM or PM circle.
*/
public int getIsTouchingAmOrPm(float xCoord, float yCoord) {
if (!mDrawValuesReady) {
return -1;
}
int squaredYDistance = (int) ((yCoord - mAmPmYCenter) * (yCoord - mAmPmYCenter));
int distanceToAmCenter =
(int) Math.sqrt((xCoord - mAmXCenter) * (xCoord - mAmXCenter) + squaredYDistance);
if (distanceToAmCenter <= mAmPmCircleRadius) {
return AM;
}
int distanceToPmCenter =
(int) Math.sqrt((xCoord - mPmXCenter) * (xCoord - mPmXCenter) + squaredYDistance);
if (distanceToPmCenter <= mAmPmCircleRadius) {
return PM;
}
// Neither was close enough.
return -1;
}
@Override
public void onDraw(Canvas canvas) {
int viewWidth = getWidth();
if (viewWidth == 0 || !mIsInitialized) {
return;
}
if (!mDrawValuesReady) {
int layoutXCenter = getWidth() / 2;
int layoutYCenter = getHeight() / 2;
int circleRadius =
(int) (Math.min(layoutXCenter, layoutYCenter) * mCircleRadiusMultiplier);
mAmPmCircleRadius = (int) (circleRadius * mAmPmCircleRadiusMultiplier);
int textSize = mAmPmCircleRadius * 3 / 4;
mPaint.setTextSize(textSize);
// Line up the vertical center of the AM/PM circles with the bottom of the main circle.
mAmPmYCenter = layoutYCenter - mAmPmCircleRadius / 2 + circleRadius;
// Line up the horizontal edges of the AM/PM circles with the horizontal edges
// of the main circle.
mAmXCenter = layoutXCenter - circleRadius + mAmPmCircleRadius;
mPmXCenter = layoutXCenter + circleRadius - mAmPmCircleRadius;
mDrawValuesReady = true;
}
// Draw the two circles.
mPaint.setColor(getCircleBackgroundColor(AM));
canvas.drawCircle(mAmXCenter, mAmPmYCenter, mAmPmCircleRadius, mPaint);
mPaint.setColor(getCircleBackgroundColor(PM));
canvas.drawCircle(mPmXCenter, mAmPmYCenter, mAmPmCircleRadius, mPaint);
// Draw the AM/PM texts on top.
mPaint.setColor(mAmPmTextColor);
int textYCenter = mAmPmYCenter - (int) (mPaint.descent() + mPaint.ascent()) / 2;
canvas.drawText(mAmText, mAmXCenter, textYCenter, mPaint);
canvas.drawText(mPmText, mPmXCenter, textYCenter, mPaint);
}
private int getCircleBackgroundColor(int amOrPm) {
final boolean pressed = mAmOrPmPressed == amOrPm;
final boolean selected = mAmOrPm == amOrPm;
final int[] state = {pressed ? android.R.attr.state_pressed : -android.R.attr.state_pressed,
selected ? android.R.attr.state_selected : -android.R.attr.state_selected};
return mCircleBackground.getColorForState(state, mCircleBackgroundDefault);
}
}