FishLoadingRenderer.java 文件源码

@Override
protected void draw(Canvas canvas, Rect bounds) {
    int saveCount = canvas.save();
    RectF arcBounds = mTempBounds;
    arcBounds.set(bounds);

    mPaint.setColor(mColor);

    //calculate fish clip bounds
    //clip the width of the fish need to increase mPathDottedLineSize * 1.2f
    RectF fishRectF = new RectF(mFishHeadPos[0] - mFishWidth / 2.0f - mPathDottedLineSize * 1.2f, mFishHeadPos[1] - mFishHeight / 2.0f,
            mFishHeadPos[0] + mFishWidth / 2.0f + mPathDottedLineSize * 1.2f, mFishHeadPos[1] + mFishHeight / 2.0f);
    Matrix matrix = new Matrix();
    matrix.postRotate(mFishRotateDegrees, fishRectF.centerX(), fishRectF.centerY());
    matrix.mapRect(fishRectF);

    //draw river
    int riverSaveCount = canvas.save();
    mPaint.setStyle(Paint.Style.STROKE);
    canvas.clipRect(fishRectF, Region.Op.DIFFERENCE);
    canvas.drawPath(createRiverPath(arcBounds), mPaint);
    canvas.restoreToCount(riverSaveCount);

    //draw fish
    int fishSaveCount = canvas.save();
    mPaint.setStyle(Paint.Style.FILL);
    canvas.rotate(mFishRotateDegrees, mFishHeadPos[0], mFishHeadPos[1]);
    canvas.clipPath(createFishEyePath(mFishHeadPos[0], mFishHeadPos[1] - mFishHeight * 0.06f), Region.Op.DIFFERENCE);
    canvas.drawPath(createFishPath(mFishHeadPos[0], mFishHeadPos[1]), mPaint);
    canvas.restoreToCount(fishSaveCount);

    canvas.restoreToCount(saveCount);
}