@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
/** 画最外层的大圆环 */
int centre = getWidth() / 2; // 获取圆心的x坐标
int radius = (int) (centre - roundWidth / 2); // 圆环的半径
paint.setColor(roundColor); // 设置圆环的颜色
paint.setStyle(Paint.Style.STROKE); // 设置空心
paint.setStrokeWidth(roundWidth); // 设置圆环的宽度
paint.setAntiAlias(true); // 消除锯齿
canvas.drawCircle(centre, centre, radius, paint); // 画出圆环
Log.e("log", centre + "");
/** 画进度百分比 */
paint.setStrokeWidth(0);
paint.setColor(textColor);
paint.setTextSize(textSize);
paint.setTypeface(Typeface.DEFAULT_BOLD); // 设置字体
int percent = (int) (((float) progress / (float) max) * 100); // 中间的进度百分比，先转换成float在进行除法运算，不然都为0
float textWidth = paint.measureText(percent + "%"); // 测量字体宽度，我们需要根据字体的宽度设置在圆环中间
if (textIsDisplayable && percent != 0 && style == STROKE) {
canvas.drawText(
percent + "%", centre - textWidth / 2, centre + textSize / 2, paint); // 画出进度百分比
}
/** 画圆弧 ，画圆环的进度 */
// 设置进度是实心还是空心
paint.setStrokeWidth(roundWidth); // 设置圆环的宽度
paint.setColor(roundProgressColor); // 设置进度的颜色
RectF oval =
new RectF(
centre - radius, centre - radius, centre + radius, centre + radius); // 用于定义的圆弧的形状和大小的界限
switch (style) {
case STROKE:
{
paint.setStyle(Paint.Style.STROKE);
canvas.drawArc(oval, 0, 360 * progress / max, false, paint); // 根据进度画圆弧
break;
}
case FILL:
{
paint.setStyle(Paint.Style.FILL_AND_STROKE);
if (progress != 0) canvas.drawArc(oval, 0, 360 * progress / max, true, paint); // 根据进度画圆弧
break;
}
}
}
@Override
public void draw(Canvas canvas) {
float startAngle = mCurrentGlobalAngle - mCurrentGlobalAngleOffset;
float sweepAngle = mCurrentSweepAngle;
if (!mModeAppearing) {
startAngle = startAngle + sweepAngle;
sweepAngle = 360 - sweepAngle - MIN_SWEEP_ANGLE;
} else {
sweepAngle += MIN_SWEEP_ANGLE;
}
canvas.drawArc(fBounds, startAngle, sweepAngle, false, mPaint);
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
if (Build.VERSION.SDK_INT < 11) {
mTransform.set(canvas.getMatrix());
mTransform.preRotate(mRotation, mPivot.x, mPivot.y);
canvas.setMatrix(mTransform);
}
for (Item it : mData) {
mPiePaint.setShader(it.mItemShader);
cSlicePaint.setShader(it.cSliceShader);
// Log.d(TAG, "mBounds: " +mBounds);
canvas.drawArc(mBounds, 360 - it.mEndAngle, it.mEndAngle - it.mStartAngle, true, mPiePaint);
Log.d(TAG, "Item Being Built: " + it.mLabel);
Log.d(TAG, "RectF: " + it.cSliceBounds);
Log.d(TAG, "StartAngle> " + it.mStartAngle + " EndAngle> " + it.mEndAngle);
canvas.drawArc(
it.cSliceBounds, 360 - it.mEndAngle, it.mEndAngle - it.mStartAngle, true, cSlicePaint);
// Log.d(TAG, "StartAngle> "+it.mStartAngle+" EndAngle> "+it.mEndAngle);
}
}
public void draw() {
Bitmap bitmap = Bitmap.createBitmap(200, 200, Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
RectF rect = new RectF(8, 8, 192, 192);
Paint p = new Paint();
p.setAntiAlias(true);
p.setStyle(Paint.Style.STROKE);
p.setColor(ColS);
p.setStrokeWidth(16);
int S = 162;
int H = 300;
// S
canvas.drawArc(rect, -90, S, false, p);
p.setStyle(Paint.Style.FILL);
p.setColor(ColM);
H -= 90;
canvas.drawCircle(100, 100, 72, p);
p.setColor(ColH);
p.setStrokeWidth(2);
float sx, sy;
sx = (float) (72 * Math.cos(Math.PI * H / 180));
sy = (float) (72 * Math.sin(Math.PI * H / 180));
canvas.drawLine(100, 100, sx + 100, sy + 100, p);
ImageView clokImg;
clokImg = (ImageView) findViewById(R.id.clokImage);
clokImg.setImageBitmap(bitmap);
// Hour picker
Bitmap ColPickBmp = Bitmap.createBitmap(80, 50, Bitmap.Config.ARGB_8888);
Canvas ColPickCanvas = new Canvas(ColPickBmp);
ImageView colPickImg = (ImageView) findViewById(R.id.colorHou);
rect = new RectF(0, 0, 80, 50);
p = new Paint();
p.setAntiAlias(true);
p.setStyle(Paint.Style.FILL);
p.setColor(ColH);
ColPickCanvas.drawRect(rect, p);
colPickImg.setImageBitmap(ColPickBmp);
// Minute picker
ColPickBmp = Bitmap.createBitmap(80, 50, Bitmap.Config.ARGB_8888);
ColPickCanvas = new Canvas(ColPickBmp);
colPickImg = (ImageView) findViewById(R.id.colorMin);
rect = new RectF(0, 0, 80, 50);
p = new Paint();
p.setAntiAlias(true);
p.setStyle(Paint.Style.FILL);
p.setColor(ColM);
ColPickCanvas.drawRect(rect, p);
colPickImg.setImageBitmap(ColPickBmp);
// Second picker
ColPickBmp = Bitmap.createBitmap(80, 50, Bitmap.Config.ARGB_8888);
ColPickCanvas = new Canvas(ColPickBmp);
colPickImg = (ImageView) findViewById(R.id.colorSec);
rect = new RectF(0, 0, 80, 50);
p = new Paint();
p.setAntiAlias(true);
p.setStyle(Paint.Style.FILL);
p.setColor(ColS);
ColPickCanvas.drawRect(rect, p);
colPickImg.setImageBitmap(ColPickBmp);
}
/**
* 自定义的方法,简单绘制一些基本图形
*
* @param mCanvas 把图形画在mCanvas上
*/
public void canvasMethod(Canvas mCanvas) {
// 创建对应坐标的矩形区域
RectF mArc = new RectF(mX, mY - 70, mX + 50, mY - 20);
// 画填充弧,在矩形区域内,从弧的最右边开始,画270度,然后再通过连接圆心来填充
mCanvas.drawArc(mArc, 0, 270, true, mPaint);
// 获得icon的Bitmap对象
Bitmap mBitmap = Bitmap.createBitmap(100, 100, Bitmap.Config.ARGB_8888);
// 画图片
mCanvas.drawBitmap(mBitmap, mX, mY, mPaint);
// 画圆,(x轴,y轴,半径,画笔)
mCanvas.drawCircle(mX + 10, mY + 60, 10, mPaint);
// 画一条线,(起点横坐标,起点纵坐标,终点横坐标,终点纵坐标,画笔)
mCanvas.drawLine(mX, mY + 75, mX + 20, mY + 75, mPaint);
// 画多条线,(坐标数组,画笔)坐标数组里每四个值构成一条线
mCanvas.drawLines(
new float[] {mX + 50, mY + 45, mX + 50, mY + 75, mX + 60, mY + 45, mX + 60, mY + 75},
mPaint);
// 创建对应矩形区域
RectF mOval = new RectF(mX, mY + 80, mX + 60, mY + 110);
// 画椭圆
mCanvas.drawOval(mOval, mPaint);
/*
* Paint qPaint = new Paint(); qPaint.setColor(Color.RED);
* mCanvas.drawPaint(qPaint);
*/
// 重置Path里的所有路径
mPath.reset();
// 设置Path的起点
mPath.moveTo(mX, mY + 120);
// 第二个点
mPath.lineTo(screenW - 10, mY + 120);
// 第三个点
mPath.lineTo(screenW - 10, mY + 150);
// 画出路径,这里画的是三角形
mCanvas.drawPath(mPath, mPaint);
// 重置Path里的所有路径
qPath.reset();
// 设置Path的起点
qPath.moveTo(qStartX, qStartY);
// 设置贝塞尔曲线的控制点坐标和终点坐标
qPath.quadTo(qControlX, qCOntrolY, qEndX, qEndY);
// 画出贝塞尔曲线
mCanvas.drawPath(qPath, qPaint);
// 画点
mCanvas.drawPoint(mX, mY + 155, qPaint);
// 画多个点,坐标数组每两个值代表一个点的坐标
mCanvas.drawPoints(new float[] {mX, mY + 160, mX + 5, mY + 160, mX + 5, mY + 160}, qPaint);
// 画矩形
mCanvas.drawRect(mX, mY + 170, mX + 100, mY + 220, mPaint);
// 设置矩形区域
RectF mRect = new RectF(mX, mY + 230, mX + 100, mY + 260);
// 画圆角矩形,这个方法的第二第三个参数在后面有图讲解
mCanvas.drawRoundRect(mRect, 10, 10, mPaint);
// 画文本
mCanvas.drawText("drawText", mX, mY + 290, mPaint);
// 画文本,数组里每两个值代表文本的一个字符的坐标，数组的坐标可以比字符串里的字符多，但不可以少
mCanvas.drawPosText(
"哈哈你好",
new float[] {mX, mY + 310, mX + 20, mY + 310, mX + 40, mY + 310, mX + 60, mY + 310},
mPaint);
// 重置Path
tPath.reset();
// 添加一个圆形路径,坐标,半径,方向(顺时针还是逆时针)
tPath.addCircle(mX + 10, mY + 340, 10, Path.Direction.CW);
// 画出路径
mCanvas.drawPath(tPath, qPaint);
// 把文本画在路径上,但不会画出路径
mCanvas.drawTextOnPath("draw", tPath, 30, 0, mPaint);
}
private void drawArcs(Canvas canvas, RectF oval, boolean useCenter, Paint paint) {
canvas.drawRect(oval, mFramePaint);
canvas.drawArc(oval, mStart, mSweep, useCenter, paint);
}