/*
* 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 com.android.datetimepicker.time;
import android.content.Context;
import android.content.res.Resources;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Typeface;
import android.graphics.Paint.Align;
import android.util.Log;
import android.view.View;
import com.android.datetimepicker.R;
import com.android.datetimepicker.Utils;
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";
// Alpha level for selected circle.
private static final int SELECTED_ALPHA = Utils.SELECTED_ALPHA;
private static final int SELECTED_ALPHA_THEME_DARK = Utils.SELECTED_ALPHA_THEME_DARK;
private final Paint mPaint = new Paint();
private int mSelectedAlpha;
private int mUnselectedColor;
private int mAmPmTextColor;
private int mSelectedColor;
private float mCircleRadiusMultiplier;
private float mAmPmCircleRadiusMultiplier;
private String mAmText;
private String mPmText;
private boolean mIsInitialized;
private static final int AM = TimePickerDialog.AM;
private static final int PM = TimePickerDialog.PM;
private boolean mDrawValuesReady;
private int mAmPmCircleRadius;
private int mAmXCenter;
private int mPmXCenter;
private int mAmPmYCenter;
private int mAmOrPm;
private int mAmOrPmPressed;
public AmPmCirclesView(Context context) {
super(context);
mIsInitialized = false;
}
public void initialize(Context context, int amOrPm) {
if (mIsInitialized) {
Log.e(TAG, "AmPmCirclesView may only be initialized once.");
return;
}
Resources res = context.getResources();
mUnselectedColor = res.getColor(android.R.color.white);
mSelectedColor = res.getColor(R.color.blue);
mAmPmTextColor = res.getColor(R.color.ampm_text_color);
mSelectedAlpha = SELECTED_ALPHA;
String typefaceFamily = res.getString(R.string.sans_serif);
Typeface tf = Typeface.create(typefaceFamily, Typeface.NORMAL);
mPaint.setTypeface(tf);
mPaint.setAntiAlias(true);
mPaint.setTextAlign(Align.CENTER);
mCircleRadiusMultiplier =
Float.parseFloat(res.getString(R.string.circle_radius_multiplier));
mAmPmCircleRadiusMultiplier =
Float.parseFloat(res.getString(R.string.ampm_circle_radius_multiplier));
String[] amPmTexts = new DateFormatSymbols().getAmPmStrings();
mAmText = amPmTexts[0];
mPmText = amPmTexts[1];
setAmOrPm(amOrPm);
mAmOrPmPressed = -1;
mIsInitialized = true;
}
/* package */ void setTheme(Context context, boolean themeDark) {
Resources res = context.getResources();
if (themeDark) {
mUnselectedColor = res.getColor(R.color.dark_gray);
mSelectedColor = res.getColor(R.color.red);
mAmPmTextColor = res.getColor(android.R.color.white);
mSelectedAlpha = SELECTED_ALPHA_THEME_DARK;
} else {
mUnselectedColor = res.getColor(android.R.color.white);
mSelectedColor = res.getColor(R.color.blue);
mAmPmTextColor = res.getColor(R.color.ampm_text_color);
mSelectedAlpha = SELECTED_ALPHA;
}
}
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;
}
// We'll need to draw either a lighter blue (for selection), a darker blue (for touching)
// or white (for not selected).
int amColor = mUnselectedColor;
int amAlpha = 255;
int pmColor = mUnselectedColor;
int pmAlpha = 255;
if (mAmOrPm == AM) {
amColor = mSelectedColor;
amAlpha = mSelectedAlpha;
} else if (mAmOrPm == PM) {
pmColor = mSelectedColor;
pmAlpha = mSelectedAlpha;
}
if (mAmOrPmPressed == AM) {
amColor = mSelectedColor;
amAlpha = mSelectedAlpha;
} else if (mAmOrPmPressed == PM) {
pmColor = mSelectedColor;
pmAlpha = mSelectedAlpha;
}
// Draw the two circles.
mPaint.setColor(amColor);
mPaint.setAlpha(amAlpha);
canvas.drawCircle(mAmXCenter, mAmPmYCenter, mAmPmCircleRadius, mPaint);
mPaint.setColor(pmColor);
mPaint.setAlpha(pmAlpha);
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);
}
}