531 lines
16 KiB
Java
531 lines
16 KiB
Java
package com.todddavies.components.progressbar;
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import android.content.Context;
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import android.content.res.TypedArray;
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import android.graphics.Canvas;
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import android.graphics.Paint;
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import android.graphics.Paint.Style;
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import android.graphics.RectF;
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import android.graphics.Shader;
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import android.os.Handler;
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import android.os.Message;
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import android.util.AttributeSet;
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import android.view.View;
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import org.bspeice.minimalbible.R;
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/**
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* An indicator of progress, similar to Android's ProgressBar.
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* Can be used in 'spin mode' or 'increment mode'
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*
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* @author Todd Davies
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* <p/>
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* Licensed under the Creative Commons Attribution 3.0 license see:
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* http://creativecommons.org/licenses/by/3.0/
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*/
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public class ProgressWheel extends View {
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//Sizes (with defaults)
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private int layout_height = 0;
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private int layout_width = 0;
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private int fullRadius = 100;
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private int circleRadius = 80;
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private int barLength = 60;
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private int barWidth = 20;
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private int rimWidth = 20;
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private int textSize = 20;
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private float contourSize = 0;
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//Padding (with defaults)
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private int paddingTop = 5;
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private int paddingBottom = 5;
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private int paddingLeft = 5;
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private int paddingRight = 5;
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//Colors (with defaults)
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private int barColor = 0xAA000000;
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private int contourColor = 0xAA000000;
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private int circleColor = 0x00000000;
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private int rimColor = 0xAADDDDDD;
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private int textColor = 0xFF000000;
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//Paints
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private Paint barPaint = new Paint();
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private Paint circlePaint = new Paint();
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private Paint rimPaint = new Paint();
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private Paint textPaint = new Paint();
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private Paint contourPaint = new Paint();
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//Rectangles
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@SuppressWarnings("unused")
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private RectF rectBounds = new RectF();
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private RectF circleBounds = new RectF();
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private RectF circleOuterContour = new RectF();
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private RectF circleInnerContour = new RectF();
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//Animation
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//The amount of pixels to move the bar by on each draw
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private int spinSpeed = 2;
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//The number of milliseconds to wait inbetween each draw
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private int delayMillis = 0;
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private Handler spinHandler = new Handler() {
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/**
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* This is the code that will increment the progress variable
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* and so spin the wheel
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*/
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@Override
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public void handleMessage(Message msg) {
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invalidate();
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if (isSpinning) {
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progress += spinSpeed;
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if (progress > 360) {
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progress = 0;
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}
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spinHandler.sendEmptyMessageDelayed(0, delayMillis);
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}
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//super.handleMessage(msg);
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}
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};
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int progress = 0;
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boolean isSpinning = false;
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//Other
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private String text = "";
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private String[] splitText = {};
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/**
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* The constructor for the ProgressWheel
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*
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* @param context
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* @param attrs
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*/
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public ProgressWheel(Context context, AttributeSet attrs) {
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super(context, attrs);
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parseAttributes(context.obtainStyledAttributes(attrs,
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R.styleable.ProgressWheel));
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}
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//----------------------------------
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//Setting up stuff
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//----------------------------------
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/*
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* When this is called, make the view square.
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* From: http://www.jayway.com/2012/12/12/creating-custom-android-views-part-4-measuring-and-how-to-force-a-view-to-be-square/
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*
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*/
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@Override
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protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
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// The first thing that happen is that we call the superclass
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// implementation of onMeasure. The reason for that is that measuring
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// can be quite a complex process and calling the super method is a
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// convenient way to get most of this complexity handled.
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super.onMeasure(widthMeasureSpec, heightMeasureSpec);
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// We can’t use getWidth() or getHight() here. During the measuring
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// pass the view has not gotten its final size yet (this happens first
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// at the start of the layout pass) so we have to use getMeasuredWidth()
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// and getMeasuredHeight().
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int size = 0;
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int width = getMeasuredWidth();
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int height = getMeasuredHeight();
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int widthWithoutPadding = width - getPaddingLeft() - getPaddingRight();
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int heigthWithoutPadding = height - getPaddingTop() - getPaddingBottom();
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// Finally we have some simple logic that calculates the size of the view
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// and calls setMeasuredDimension() to set that size.
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// Before we compare the width and height of the view, we remove the padding,
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// and when we set the dimension we add it back again. Now the actual content
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// of the view will be square, but, depending on the padding, the total dimensions
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// of the view might not be.
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if (widthWithoutPadding > heigthWithoutPadding) {
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size = heigthWithoutPadding;
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} else {
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size = widthWithoutPadding;
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}
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// If you override onMeasure() you have to call setMeasuredDimension().
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// This is how you report back the measured size. If you don’t call
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// setMeasuredDimension() the parent will throw an exception and your
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// application will crash.
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// We are calling the onMeasure() method of the superclass so we don’t
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// actually need to call setMeasuredDimension() since that takes care
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// of that. However, the purpose with overriding onMeasure() was to
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// change the default behaviour and to do that we need to call
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// setMeasuredDimension() with our own values.
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setMeasuredDimension(size + getPaddingLeft() + getPaddingRight(), size + getPaddingTop() + getPaddingBottom());
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}
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/**
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* Use onSizeChanged instead of onAttachedToWindow to get the dimensions of the view,
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* because this method is called after measuring the dimensions of MATCH_PARENT & WRAP_CONTENT.
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* Use this dimensions to setup the bounds and paints.
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*/
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@Override
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protected void onSizeChanged(int w, int h, int oldw, int oldh) {
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super.onSizeChanged(w, h, oldw, oldh);
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// Share the dimensions
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layout_width = w;
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layout_height = h;
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setupBounds();
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setupPaints();
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invalidate();
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}
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/**
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* Set the properties of the paints we're using to
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* draw the progress wheel
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*/
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private void setupPaints() {
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barPaint.setColor(barColor);
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barPaint.setAntiAlias(true);
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barPaint.setStyle(Style.STROKE);
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barPaint.setStrokeWidth(barWidth);
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rimPaint.setColor(rimColor);
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rimPaint.setAntiAlias(true);
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rimPaint.setStyle(Style.STROKE);
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rimPaint.setStrokeWidth(rimWidth);
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circlePaint.setColor(circleColor);
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circlePaint.setAntiAlias(true);
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circlePaint.setStyle(Style.FILL);
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textPaint.setColor(textColor);
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textPaint.setStyle(Style.FILL);
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textPaint.setAntiAlias(true);
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textPaint.setTextSize(textSize);
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contourPaint.setColor(contourColor);
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contourPaint.setAntiAlias(true);
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contourPaint.setStyle(Style.STROKE);
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contourPaint.setStrokeWidth(contourSize);
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}
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/**
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* Set the bounds of the component
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*/
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private void setupBounds() {
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// Width should equal to Height, find the min value to steup the circle
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int minValue = Math.min(layout_width, layout_height);
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// Calc the Offset if needed
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int xOffset = layout_width - minValue;
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int yOffset = layout_height - minValue;
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// Add the offset
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paddingTop = this.getPaddingTop() + (yOffset / 2);
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paddingBottom = this.getPaddingBottom() + (yOffset / 2);
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paddingLeft = this.getPaddingLeft() + (xOffset / 2);
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paddingRight = this.getPaddingRight() + (xOffset / 2);
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int width = getWidth(); //this.getLayoutParams().width;
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int height = getHeight(); //this.getLayoutParams().height;
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rectBounds = new RectF(paddingLeft,
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paddingTop,
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width - paddingRight,
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height - paddingBottom);
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circleBounds = new RectF(paddingLeft + barWidth,
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paddingTop + barWidth,
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width - paddingRight - barWidth,
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height - paddingBottom - barWidth);
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circleInnerContour = new RectF(circleBounds.left + (rimWidth / 2.0f) + (contourSize / 2.0f), circleBounds.top + (rimWidth / 2.0f) + (contourSize / 2.0f), circleBounds.right - (rimWidth / 2.0f) - (contourSize / 2.0f), circleBounds.bottom - (rimWidth / 2.0f) - (contourSize / 2.0f));
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circleOuterContour = new RectF(circleBounds.left - (rimWidth / 2.0f) - (contourSize / 2.0f), circleBounds.top - (rimWidth / 2.0f) - (contourSize / 2.0f), circleBounds.right + (rimWidth / 2.0f) + (contourSize / 2.0f), circleBounds.bottom + (rimWidth / 2.0f) + (contourSize / 2.0f));
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fullRadius = (width - paddingRight - barWidth) / 2;
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circleRadius = (fullRadius - barWidth) + 1;
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}
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/**
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* Parse the attributes passed to the view from the XML
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*
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* @param a the attributes to parse
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*/
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private void parseAttributes(TypedArray a) {
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barWidth = (int) a.getDimension(R.styleable.ProgressWheel_barWidth,
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barWidth);
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rimWidth = (int) a.getDimension(R.styleable.ProgressWheel_rimWidth,
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rimWidth);
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spinSpeed = (int) a.getDimension(R.styleable.ProgressWheel_spinSpeed,
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spinSpeed);
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delayMillis = a.getInteger(R.styleable.ProgressWheel_delayMillis,
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delayMillis);
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if (delayMillis < 0) {
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delayMillis = 0;
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}
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barColor = a.getColor(R.styleable.ProgressWheel_barColor, barColor);
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barLength = (int) a.getDimension(R.styleable.ProgressWheel_barLength,
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barLength);
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textSize = (int) a.getDimension(R.styleable.ProgressWheel_textSize,
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textSize);
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textColor = (int) a.getColor(R.styleable.ProgressWheel_textColor,
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textColor);
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//if the text is empty , so ignore it
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if (a.hasValue(R.styleable.ProgressWheel_text)) {
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setText(a.getString(R.styleable.ProgressWheel_text));
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}
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rimColor = (int) a.getColor(R.styleable.ProgressWheel_rimColor,
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rimColor);
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circleColor = (int) a.getColor(R.styleable.ProgressWheel_circleColor,
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circleColor);
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contourColor = a.getColor(R.styleable.ProgressWheel_contourColor, contourColor);
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contourSize = a.getDimension(R.styleable.ProgressWheel_contourSize, contourSize);
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// Recycle
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a.recycle();
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}
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//----------------------------------
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//Animation stuff
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//----------------------------------
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protected void onDraw(Canvas canvas) {
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super.onDraw(canvas);
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//Draw the inner circle
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canvas.drawArc(circleBounds, 360, 360, false, circlePaint);
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//Draw the rim
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canvas.drawArc(circleBounds, 360, 360, false, rimPaint);
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canvas.drawArc(circleOuterContour, 360, 360, false, contourPaint);
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canvas.drawArc(circleInnerContour, 360, 360, false, contourPaint);
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//Draw the bar
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if (isSpinning) {
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canvas.drawArc(circleBounds, progress - 90, barLength, false,
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barPaint);
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} else {
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canvas.drawArc(circleBounds, -90, progress, false, barPaint);
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}
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//Draw the text (attempts to center it horizontally and vertically)
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float textHeight = textPaint.descent() - textPaint.ascent();
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float verticalTextOffset = (textHeight / 2) - textPaint.descent();
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for (String s : splitText) {
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float horizontalTextOffset = textPaint.measureText(s) / 2;
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canvas.drawText(s, this.getWidth() / 2 - horizontalTextOffset,
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this.getHeight() / 2 + verticalTextOffset, textPaint);
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}
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}
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/**
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* Check if the wheel is currently spinning
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*/
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public boolean isSpinning() {
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if(isSpinning){
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return true;
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} else {
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return false;
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}
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}
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/**
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* Reset the count (in increment mode)
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*/
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public void resetCount() {
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progress = 0;
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setText("0%");
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invalidate();
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}
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/**
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* Turn off spin mode
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*/
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public void stopSpinning() {
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isSpinning = false;
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progress = 0;
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spinHandler.removeMessages(0);
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}
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/**
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* Puts the view on spin mode
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*/
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public void spin() {
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isSpinning = true;
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spinHandler.sendEmptyMessage(0);
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}
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/**
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* Increment the progress by 1 (of 360)
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*/
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public void incrementProgress() {
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isSpinning = false;
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progress++;
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if (progress > 360)
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progress = 0;
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// setText(Math.round(((float) progress / 360) * 100) + "%");
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spinHandler.sendEmptyMessage(0);
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}
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/**
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* Set the progress to a specific value
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*/
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public void setProgress(int i) {
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isSpinning = false;
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progress = i;
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spinHandler.sendEmptyMessage(0);
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}
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//----------------------------------
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//Getters + setters
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//----------------------------------
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/**
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* Set the text in the progress bar
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* Doesn't invalidate the view
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*
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* @param text the text to show ('\n' constitutes a new line)
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*/
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public void setText(String text) {
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this.text = text;
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splitText = this.text.split("\n");
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}
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public int getCircleRadius() {
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return circleRadius;
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}
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public void setCircleRadius(int circleRadius) {
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this.circleRadius = circleRadius;
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}
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public int getBarLength() {
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return barLength;
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}
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public void setBarLength(int barLength) {
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this.barLength = barLength;
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}
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public int getBarWidth() {
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return barWidth;
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}
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public void setBarWidth(int barWidth) {
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this.barWidth = barWidth;
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}
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public int getTextSize() {
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return textSize;
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}
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public void setTextSize(int textSize) {
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this.textSize = textSize;
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}
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public int getPaddingTop() {
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return paddingTop;
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}
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public void setPaddingTop(int paddingTop) {
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this.paddingTop = paddingTop;
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}
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public int getPaddingBottom() {
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return paddingBottom;
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}
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public void setPaddingBottom(int paddingBottom) {
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this.paddingBottom = paddingBottom;
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}
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public int getPaddingLeft() {
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return paddingLeft;
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}
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public void setPaddingLeft(int paddingLeft) {
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this.paddingLeft = paddingLeft;
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}
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public int getPaddingRight() {
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return paddingRight;
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}
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public void setPaddingRight(int paddingRight) {
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this.paddingRight = paddingRight;
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}
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public int getBarColor() {
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return barColor;
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}
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public void setBarColor(int barColor) {
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this.barColor = barColor;
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}
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public int getCircleColor() {
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return circleColor;
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}
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public void setCircleColor(int circleColor) {
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this.circleColor = circleColor;
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}
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public int getRimColor() {
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return rimColor;
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}
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public void setRimColor(int rimColor) {
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this.rimColor = rimColor;
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}
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public Shader getRimShader() {
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return rimPaint.getShader();
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}
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public void setRimShader(Shader shader) {
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this.rimPaint.setShader(shader);
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}
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public int getTextColor() {
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return textColor;
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}
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public void setTextColor(int textColor) {
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this.textColor = textColor;
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}
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public int getSpinSpeed() {
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return spinSpeed;
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}
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public void setSpinSpeed(int spinSpeed) {
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this.spinSpeed = spinSpeed;
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}
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public int getRimWidth() {
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return rimWidth;
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}
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public void setRimWidth(int rimWidth) {
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this.rimWidth = rimWidth;
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}
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public int getDelayMillis() {
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return delayMillis;
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}
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public void setDelayMillis(int delayMillis) {
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this.delayMillis = delayMillis;
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}
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}
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