package me.storm.ninegag.view;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Paint.Style;
import android.graphics.RectF;
import android.graphics.Shader;
import android.os.Handler;
import android.os.Message;
import android.util.AttributeSet;
import android.view.View;
import me.storm.ninegag.R;
/**
* Created by storm on 14-4-15.
*/
public class ProgressWheel extends View {
// Sizes (with defaults)
private int layout_height = 0;
private int layout_width = 0;
private int fullRadius = 100;
private int circleRadius = 80;
private int barLength = 60;
private int barWidth = 20;
private int rimWidth = 20;
private int textSize = 20;
// Padding (with defaults)
private int paddingTop = 5;
private int paddingBottom = 5;
private int paddingLeft = 5;
private int paddingRight = 5;
// Colors (with defaults)
private int barColor = 0xAA000000;
private int circleColor = 0x00000000;
private int rimColor = 0xAADDDDDD;
private int textColor = 0xFF000000;
// Paints
private Paint barPaint = new Paint();
private Paint circlePaint = new Paint();
private Paint rimPaint = new Paint();
private Paint textPaint = new Paint();
// Rectangles
@SuppressWarnings("unused")
private RectF rectBounds = new RectF();
private RectF circleBounds = new RectF();
// Animation
// The amount of pixels to move the bar by on each draw
private int spinSpeed = 2;
// The number of milliseconds to wait inbetween each draw
private int delayMillis = 0;
private Handler spinHandler = new Handler() {
/**
* This is the code that will increment the progress variable and so
* spin the wheel
*/
@Override
public void handleMessage(Message msg) {
invalidate();
if (isSpinning) {
progress += spinSpeed;
if (progress > 360) {
progress = 0;
}
spinHandler.sendEmptyMessageDelayed(0, delayMillis);
}
// super.handleMessage(msg);
}
};
int progress = 0;
boolean isSpinning = false;
// Other
private String text = "";
private String[] splitText = {};
/**
* The constructor for the ProgressWheel
*
* @param context
* @param attrs
*/
public ProgressWheel(Context context, AttributeSet attrs) {
super(context, attrs);
parseAttributes(context.obtainStyledAttributes(attrs, R.styleable.ProgressWheel));
}
// ----------------------------------
// Setting up stuff
// ----------------------------------
/**
* Use onSizeChanged instead of onAttachedToWindow to get the dimensions of
* the view, because this method is called after measuring the dimensions of
* MATCH_PARENT & WRAP_CONTENT. Use this dimensions to setup the bounds and
* paints.
*/
@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
super.onSizeChanged(w, h, oldw, oldh);
// Share the dimensions
layout_width = w;
layout_height = h;
setupBounds();
setupPaints();
invalidate();
}
/**
* Set the properties of the paints we're using to draw the progress wheel
*/
private void setupPaints() {
barPaint.setColor(barColor);
barPaint.setAntiAlias(true);
barPaint.setStyle(Style.STROKE);
barPaint.setStrokeWidth(barWidth);
rimPaint.setColor(rimColor);
rimPaint.setAntiAlias(true);
rimPaint.setStyle(Style.STROKE);
rimPaint.setStrokeWidth(rimWidth);
circlePaint.setColor(circleColor);
circlePaint.setAntiAlias(true);
circlePaint.setStyle(Style.FILL);
textPaint.setColor(textColor);
textPaint.setStyle(Style.FILL);
textPaint.setAntiAlias(true);
textPaint.setTextSize(textSize);
}
/**
* Set the bounds of the component
*/
private void setupBounds() {
// Width should equal to Height, find the min value to steup the circle
int minValue = Math.min(layout_width, layout_height);
// Calc the Offset if needed
int xOffset = layout_width - minValue;
int yOffset = layout_height - minValue;
// Add the offset
paddingTop = this.getPaddingTop() + (yOffset / 2);
paddingBottom = this.getPaddingBottom() + (yOffset / 2);
paddingLeft = this.getPaddingLeft() + (xOffset / 2);
paddingRight = this.getPaddingRight() + (xOffset / 2);
rectBounds = new RectF(paddingLeft, paddingTop,
this.getLayoutParams().width - paddingRight, this.getLayoutParams().height
- paddingBottom
);
circleBounds = new RectF(paddingLeft + barWidth, paddingTop + barWidth,
this.getLayoutParams().width - paddingRight - barWidth,
this.getLayoutParams().height - paddingBottom - barWidth);
fullRadius = (this.getLayoutParams().width - paddingRight - barWidth) / 2;
circleRadius = (fullRadius - barWidth) + 1;
}
/**
* Parse the attributes passed to the view from the XML
*
* @param a the attributes to parse
*/
private void parseAttributes(TypedArray a) {
barWidth = (int) a.getDimension(R.styleable.ProgressWheel_barWidth, barWidth);
rimWidth = (int) a.getDimension(R.styleable.ProgressWheel_rimWidth, rimWidth);
spinSpeed = (int) a.getDimension(R.styleable.ProgressWheel_spinSpeed, spinSpeed);
delayMillis = (int) a.getInteger(R.styleable.ProgressWheel_delayMillis, delayMillis);
if (delayMillis < 0) {
delayMillis = 0;
}
barColor = a.getColor(R.styleable.ProgressWheel_barColor, barColor);
barLength = (int) a.getDimension(R.styleable.ProgressWheel_barLength, barLength);
textSize = (int) a.getDimension(R.styleable.ProgressWheel_textSize, textSize);
textColor = (int) a.getColor(R.styleable.ProgressWheel_textColor, textColor);
// if the text is empty , so ignore it
if (a.hasValue(R.styleable.ProgressWheel_progress)) {
setText(a.getString(R.styleable.ProgressWheel_progress));
}
rimColor = (int) a.getColor(R.styleable.ProgressWheel_rimColor, rimColor);
circleColor = (int) a.getColor(R.styleable.ProgressWheel_circleColor, circleColor);
// Recycle
a.recycle();
}
// ----------------------------------
// Animation stuff
// ----------------------------------
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
// Draw the rim
canvas.drawArc(circleBounds, 360, 360, false, rimPaint);
// Draw the bar
if (isSpinning) {
canvas.drawArc(circleBounds, progress - 90, barLength, false, barPaint);
} else {
canvas.drawArc(circleBounds, -90, progress, false, barPaint);
}
// Draw the inner circle
canvas.drawCircle((circleBounds.width() / 2) + rimWidth + paddingLeft,
(circleBounds.height() / 2) + rimWidth + paddingTop, circleRadius, circlePaint);
// Draw the text (attempts to center it horizontally and vertically)
int offsetNum = 0;
for (String s : splitText) {
float offset = textPaint.measureText(s) / 2;
canvas.drawText(s, this.getWidth() / 2 - offset, this.getHeight() / 2
+ (textSize * (offsetNum)) - ((splitText.length - 1) * (textSize / 2)),
textPaint
);
offsetNum++;
}
}
/**
* Reset the count (in increment mode)
*/
public void resetCount() {
progress = 0;
setText("0%");
invalidate();
}
/**
* Turn off spin mode
*/
public void stopSpinning() {
isSpinning = false;
progress = 0;
spinHandler.removeMessages(0);
}
/**
* Puts the view on spin mode
*/
public void spin() {
isSpinning = true;
spinHandler.sendEmptyMessage(0);
}
/**
* Increment the progress by 1 (of 360)
*/
public void incrementProgress() {
isSpinning = false;
progress++;
setText(Math.round(((float) progress / 360) * 100) + "%");
spinHandler.sendEmptyMessage(0);
}
/**
* Set the progress to a specific value
*/
public void setProgress(int i) {
isSpinning = false;
progress = i;
spinHandler.sendEmptyMessage(0);
}
// ----------------------------------
// Getters + setters
// ----------------------------------
/**
* Set the text in the progress bar Doesn't invalidate the view
*
* @param text the text to show ('\n' constitutes a new line)
*/
public void setText(String text) {
this.text = text;
splitText = this.text.split("\n");
}
public int getCircleRadius() {
return circleRadius;
}
public void setCircleRadius(int circleRadius) {
this.circleRadius = circleRadius;
}
public int getBarLength() {
return barLength;
}
public void setBarLength(int barLength) {
this.barLength = barLength;
}
public int getBarWidth() {
return barWidth;
}
public void setBarWidth(int barWidth) {
this.barWidth = barWidth;
}
public int getTextSize() {
return textSize;
}
public void setTextSize(int textSize) {
this.textSize = textSize;
}
public int getPaddingTop() {
return paddingTop;
}
public void setPaddingTop(int paddingTop) {
this.paddingTop = paddingTop;
}
public int getPaddingBottom() {
return paddingBottom;
}
public void setPaddingBottom(int paddingBottom) {
this.paddingBottom = paddingBottom;
}
public int getPaddingLeft() {
return paddingLeft;
}
public void setPaddingLeft(int paddingLeft) {
this.paddingLeft = paddingLeft;
}
public int getPaddingRight() {
return paddingRight;
}
public void setPaddingRight(int paddingRight) {
this.paddingRight = paddingRight;
}
public int getBarColor() {
return barColor;
}
public void setBarColor(int barColor) {
this.barColor = barColor;
}
public int getCircleColor() {
return circleColor;
}
public void setCircleColor(int circleColor) {
this.circleColor = circleColor;
}
public int getRimColor() {
return rimColor;
}
public void setRimColor(int rimColor) {
this.rimColor = rimColor;
}
public Shader getRimShader() {
return rimPaint.getShader();
}
public void setRimShader(Shader shader) {
this.rimPaint.setShader(shader);
}
public int getTextColor() {
return textColor;
}
public void setTextColor(int textColor) {
this.textColor = textColor;
}
public int getSpinSpeed() {
return spinSpeed;
}
public void setSpinSpeed(int spinSpeed) {
this.spinSpeed = spinSpeed;
}
public int getRimWidth() {
return rimWidth;
}
public void setRimWidth(int rimWidth) {
this.rimWidth = rimWidth;
}
public int getDelayMillis() {
return delayMillis;
}
public void setDelayMillis(int delayMillis) {
this.delayMillis = delayMillis;
}
}