java类android.graphics.drawable.ShapeDrawable的实例源码

public static Bitmap roundBitmap(Bitmap bitmap, int i, int i2, float f, float f2, float f3,
                                 float f4) throws Throwable {
    int width = bitmap.getWidth();
    int height = bitmap.getHeight();
    Rect rect = new Rect(0, 0, width, height);
    Bitmap createBitmap = (width == i && height == i2) ? Bitmap.createBitmap(bitmap.getWidth
            (), bitmap.getHeight(), Config.ARGB_8888) : Bitmap.createBitmap(i, i2, Config
            .ARGB_8888);
    Canvas canvas = new Canvas(createBitmap);
    Paint paint = new Paint();
    Rect rect2 = new Rect(0, 0, i, i2);
    paint.setAntiAlias(true);
    canvas.drawARGB(0, 0, 0, 0);
    paint.setColor(-12434878);
    float[] fArr = new float[]{f, f, f2, f2, f3, f3, f4, f4};
    ShapeDrawable shapeDrawable = new ShapeDrawable(new RoundRectShape(fArr, new RectF(0.0f,
            0.0f, 0.0f, 0.0f), fArr));
    shapeDrawable.setBounds(rect2);
    shapeDrawable.draw(canvas);
    paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));
    canvas.drawBitmap(bitmap, rect, rect2, paint);
    return createBitmap;
}

public void select(int dayOfOrder) {
    this.selected = dayOfOrder;
    resetSelect();
    if (this.mSelectListener != null) {
        this.mSelectListener.onSelect(dayOfOrder);
    }
    TextView tv = (TextView) this.tvList.get(dayOfOrder);
    tv.setTextColor(getResources().getColor(R.color.ju));
    ShapeDrawable oval = new ShapeDrawable(new OvalShape());
    if (dayOfOrder == this.orderOfToday) {
        oval.getPaint().setColor(getResources().getColor(R.color.he));
    } else {
        oval.getPaint().setColor(getResources().getColor(R.color.hb));
    }
    tv.setBackgroundDrawable(oval);
}

public static Drawable getCornerDrawable(float topLeft,
                                         float topRight,
                                         float bottomLeft,
                                         float bottomRight,
                                          @ColorInt int color) {

    float[] outerR = new float[8];
    outerR[0] = topLeft;
    outerR[1] = topLeft;
    outerR[2] = topRight;
    outerR[3] = topRight;
    outerR[4] = bottomRight;
    outerR[5] = bottomRight;
    outerR[6] = bottomLeft;
    outerR[7] = bottomLeft;

    ShapeDrawable drawable = new ShapeDrawable();
    drawable.setShape(new RoundRectShape(outerR, null, null));
    drawable.getPaint().setColor(color);

    return drawable;
}

/**
 * Adds an arrow view pointing at the original icon.
 * @param horizontalOffset the horizontal offset of the arrow, so that it
 *                              points at the center of the original icon
 */
private View addArrowView(int horizontalOffset, int verticalOffset, int width, int height) {
    LinearLayout.LayoutParams layoutParams = new LayoutParams(width, height);
    if (mIsLeftAligned) {
        layoutParams.gravity = Gravity.LEFT;
        layoutParams.leftMargin = horizontalOffset;
    } else {
        layoutParams.gravity = Gravity.RIGHT;
        layoutParams.rightMargin = horizontalOffset;
    }
    if (mIsAboveIcon) {
        layoutParams.topMargin = verticalOffset;
    } else {
        layoutParams.bottomMargin = verticalOffset;
    }

    View arrowView = new View(getContext());
    ShapeDrawable arrowDrawable = new ShapeDrawable(TriangleShape.create(
            width, height, !mIsAboveIcon));
    arrowDrawable.getPaint().setColor(Color.WHITE);
    arrowView.setBackground(arrowDrawable);
    arrowView.setElevation(getElevation());
    addView(arrowView, mIsAboveIcon ? getChildCount() : 0, layoutParams);
    return arrowView;
}

/**
 * Adds an arrow view pointing at the original icon.
 * @param horizontalOffset the horizontal offset of the arrow, so that it
 *                              points at the center of the original icon
 */
private View addArrowView(int horizontalOffset, int verticalOffset, int width, int height) {
    LayoutParams layoutParams = new LayoutParams(width, height);
    if (mIsLeftAligned) {
        layoutParams.gravity = Gravity.START;
        layoutParams.leftMargin = horizontalOffset;
    } else {
        layoutParams.gravity = Gravity.END;
        layoutParams.rightMargin = horizontalOffset;
    }
    if (mIsAboveIcon) {
        layoutParams.topMargin = verticalOffset;
    } else {
        layoutParams.bottomMargin = verticalOffset;
    }

    View arrowView = new View(getContext());
    if (Gravity.isVertical(((FrameLayout.LayoutParams) getLayoutParams()).gravity)) {
        // This is only true if there wasn't room for the container next to the icon,
        // so we centered it instead. In that case we don't want to show the arrow.
        arrowView.setVisibility(INVISIBLE);
    } else {
        ShapeDrawable arrowDrawable = new ShapeDrawable(TriangleShape.create(
                width, height, !mIsAboveIcon));
        Paint arrowPaint = arrowDrawable.getPaint();
        // Note that we have to use getChildAt() instead of getItemViewAt(),
        // since the latter expects the arrow which hasn't been added yet.
        PopupItemView itemAttachedToArrow = (PopupItemView)
                (getChildAt(mIsAboveIcon ? getChildCount() - 1 : 0));
        arrowPaint.setColor(itemAttachedToArrow.getArrowColor(mIsAboveIcon));
        // The corner path effect won't be reflected in the shadow, but shouldn't be noticeable.
        int radius = getResources().getDimensionPixelSize(R.dimen.popup_arrow_corner_radius);
        arrowPaint.setPathEffect(new CornerPathEffect(radius));
        arrowView.setBackground(arrowDrawable);
        arrowView.setElevation(getElevation());
    }
    addView(arrowView, mIsAboveIcon ? getChildCount() : 0, layoutParams);
    return arrowView;
}

public static Drawable drawable(final int[] colorBoxes, final float[] position, final GradientAngle gradientAngle) {
    ShapeDrawable.ShaderFactory shaderFactory = new ShapeDrawable.ShaderFactory() {
        @Override
        public Shader resize(int width, int height) {
            AngleCoordinate ac = AngleCoordinate.getAngleCoordinate(gradientAngle, width, height);
            LinearGradient linearGradient = new LinearGradient(ac.x1, ac.y1, ac.x2, ac.y2,
                    colorBoxes,
                    position,
                    Shader.TileMode.REPEAT);
            return linearGradient;
        }
    };
    PaintDrawable paint = new PaintDrawable();
    paint.setShape(new RectShape());
    paint.setShaderFactory(shaderFactory);
    return paint;
}

/**
 * 动态创建带上分隔线或下分隔线的Drawable
 *
 * @param separatorColor
 * @param bgColor
 * @param top
 * @return
 */
public static LayerDrawable createItemSeparatorBg(@ColorInt int separatorColor, @ColorInt int bgColor, int separatorHeight, boolean top) {

    ShapeDrawable separator = new ShapeDrawable();
    separator.getPaint().setStyle(Paint.Style.FILL);
    separator.getPaint().setColor(separatorColor);

    ShapeDrawable bg = new ShapeDrawable();
    bg.getPaint().setStyle(Paint.Style.FILL);
    bg.getPaint().setColor(bgColor);

    Drawable[] layers = {separator, bg};
    LayerDrawable layerDrawable = new LayerDrawable(layers);

    layerDrawable.setLayerInset(1, 0, top ? separatorHeight : 0, 0, top ? 0 : separatorHeight);
    return layerDrawable;
}

private Drawable createRectDrawable(int color) {
    RoundRectShape shape = new RoundRectShape(
            new float[]{
                    mCornerRadius,
                    mCornerRadius,
                    mCornerRadius,
                    mCornerRadius,
                    mCornerRadius,
                    mCornerRadius,
                    mCornerRadius,
                    mCornerRadius
            },
            null,
            null);
    ShapeDrawable shapeDrawable = new ShapeDrawable(shape);
    shapeDrawable.getPaint().setColor(color);
    return shapeDrawable;
}

/**
 * Sets the background color of the drawable
 **/
public static void setDrawableColor(Context context, Drawable drawable, @AttrRes int colorAttrRes) {
    int colorRes = getResourceId(context, colorAttrRes);
    int color = ContextCompat.getColor(context, colorRes);
    if (drawable instanceof ShapeDrawable) {
        ((ShapeDrawable) drawable).getPaint().setColor(color);
    } else if (drawable instanceof GradientDrawable) {
        ((GradientDrawable) drawable).setColor(color);
    } else if (drawable instanceof ColorDrawable) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
            ((ColorDrawable) drawable).setColor(color);
        }
    } else if (drawable instanceof RotateDrawable) {
        setDrawableColor(context, ((RotateDrawable) drawable).getDrawable(), colorAttrRes);
    }
}

private Drawable createProductImageDrawable(Product product) {
    final ShapeDrawable background = new ShapeDrawable();
    background.setShape(new OvalShape());
    background.getPaint().setColor(ContextCompat.getColor(getContext(), product.color));

    final BitmapDrawable bitmapDrawable = new BitmapDrawable(getResources(),
            BitmapFactory.decodeResource(getResources(), product.image));

    final LayerDrawable layerDrawable = new LayerDrawable
            (new Drawable[]{background, bitmapDrawable});

    final int padding = (int) getResources().getDimension(R.dimen.spacing_huge);
    layerDrawable.setLayerInset(1, padding, padding, padding, padding);

    return layerDrawable;
}

@Override
public Drawable createShadowShapeDrawable(Context context, final CircleLoadingView circleLoadingView, int shadowColor) {
    final float density = context.getResources().getDisplayMetrics().density;
    ShapeDrawable circle = new ShapeDrawable(new OvalShape());
    circle.getPaint().setColor(shadowColor);
    final float elevation = SHADOW_ELEVATION * density;
    circleLoadingView.setElevation(elevation);

    circleLoadingView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
        @Override
        public void onGlobalLayout() {
            ViewParent p = circleLoadingView.getParent();
            if(p instanceof ViewGroup) {
                final int margin = (int) elevation;
                ViewGroup.LayoutParams params = circleLoadingView.getLayoutParams();
                if(params instanceof ViewGroup.MarginLayoutParams){
                    ((ViewGroup.MarginLayoutParams) params).setMargins(margin, margin, margin, margin);
                }
            }

            circleLoadingView.getViewTreeObserver().removeOnGlobalLayoutListener(this);
        }
    });

    return circle;
}

@Override
public Drawable createShadowShapeDrawable(Context context, CircleLoadingView circleLoadingView, int shadowColor) {
    final float density = context.getResources().getDisplayMetrics().density;
    mShadowRadius = (int) (density * SHADOW_RADIUS);
    final int diameter = (int) (RADIUS * density * 2);
    final int shadowYOffset = (int) (density * Y_OFFSET);
    final int shadowXOffset = (int) (density * X_OFFSET);
    OvalShape oval = new OvalShadow(mShadowRadius, diameter);
    ShapeDrawable circle = new ShapeDrawable(oval);
    ViewCompat.setLayerType(circleLoadingView, ViewCompat.LAYER_TYPE_SOFTWARE, circle.getPaint());
    circle.getPaint().setShadowLayer(mShadowRadius, shadowXOffset, shadowYOffset,
            KEY_SHADOW_COLOR);
    final int padding = mShadowRadius;
    // set padding so the inner image sits correctly within the shadow.
    circleLoadingView.setPadding(padding, padding, padding, padding);
    return circle;
}

/**
 * 动态创建带上分隔线或下分隔线的Drawable。
 *
 * @param separatorColor 分割线颜色。
 * @param bgColor        Drawable 的背景色。
 * @param top            true 则分割线为上分割线，false 则为下分割线。
 * @return 返回所创建的 Drawable。
 */
public static LayerDrawable createItemSeparatorBg(@ColorInt int separatorColor, @ColorInt int bgColor, int separatorHeight, boolean top) {

    ShapeDrawable separator = new ShapeDrawable();
    separator.getPaint().setStyle(Paint.Style.FILL);
    separator.getPaint().setColor(separatorColor);

    ShapeDrawable bg = new ShapeDrawable();
    bg.getPaint().setStyle(Paint.Style.FILL);
    bg.getPaint().setColor(bgColor);

    Drawable[] layers = {separator, bg};
    LayerDrawable layerDrawable = new LayerDrawable(layers);

    layerDrawable.setLayerInset(1, 0, top ? separatorHeight : 0, 0, top ? 0 : separatorHeight);
    return layerDrawable;
}

public MagnifierView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        bitmap = ((BitmapDrawable) getResources().getDrawable(R.drawable.pic)).getBitmap();
        scaledBitmap = Bitmap.createScaledBitmap(bitmap, bitmap.getWidth() * FACTOR, bitmap.getHeight() * FACTOR,
                true);
//        bitmap.recycle();
        mBitmapShader = new BitmapShader(scaledBitmap,
                Shader.TileMode.CLAMP,
                Shader.TileMode.CLAMP);
        mShapeDrawable = new ShapeDrawable(new OvalShape());
        mShapeDrawable.setBounds(0, 0, WIDTH, WIDTH);
        mShapeDrawable.getPaint().setShader(mBitmapShader);
        mMatrix = new Matrix();
        mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
        mPaint.setColor(Color.RED);
        mPaint.setStyle(Paint.Style.STROKE);
        mPaint.setStrokeWidth(3);
    }

void setCornerRadius(View view, int radius, int color) {
    radius = _DP(radius);
    int borderWidth = 0;// 加边框后会出现空心圆角矩形的效果，所以设置为0
    float[] outerRadius = new float[8];
    float[] innerRadius = new float[8];
    for (int i = 0; i < 8; i++) {
        outerRadius[i] = radius + borderWidth;
        innerRadius[i] = radius;
    }
    ShapeDrawable shapeDrawable = // 创建图形drawable
            new ShapeDrawable(
                    // 创建圆角矩形
                    new RoundRectShape(outerRadius,
                            new RectF(borderWidth, borderWidth, borderWidth, borderWidth),
                            innerRadius));
    shapeDrawable.getPaint().setColor(color);// 使用指定的颜色绘制，即背景颜色
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
        // 高版本SDK使用新的API
        view.setBackground(shapeDrawable);
    } else {
        view.setBackgroundDrawable(shapeDrawable);
    }
}

@Override
public void onBindViewHolder(MyViewHolder holder, int position) {
    RestTest restTest = datas.get(position);
    RoundRectShape shape = new RoundRectShape(new float[]{8, 8, 8, 8, 8, 8, 8, 8}, null, null);
    ShapeDrawable drawable = new ShapeDrawable(shape);

    String color = "6bbd5b";
    switch (restTest.getMethod().toUpperCase()) {
        case "GET":
            break;
        case "POST":
            color = "248fb2";
            break;
        case "DELETE":
            color = "e27a7a";
            break;
        case "PUT":
            color = "9b708b";
            break;
    }
    drawable.getPaint().setColor(Color.parseColor("#" + color));
    holder.tv.setBackground(drawable);
    holder.tv.setText(restTest.getMethod().toUpperCase());

    holder.spec.setText(restTest.getUrl());
}

private void setColor(Drawable drawable, int color) {
    if (drawable instanceof ShapeDrawable) {
        ((ShapeDrawable) drawable).getPaint().setColor(color);
    } else if (drawable instanceof GradientDrawable) {
        ((GradientDrawable) drawable).setColor(color);
    } else if (drawable instanceof ColorDrawable) {
        ((ColorDrawable) drawable).setColor(color);
    } else if (drawable instanceof LayerDrawable) {
        LayerDrawable layerDrawable = (LayerDrawable) drawable;
        RotateDrawable rotateDrawable =
                (RotateDrawable) layerDrawable.findDrawableByLayerId(R.id.carrot_shape_top);
        setColor(rotateDrawable.getDrawable(), color);
    } else if (drawable instanceof RotateDrawable) {
        setColor(((RotateDrawable) drawable).getDrawable(), color);
    }
}

private static Drawable getBackground(int normalStateColor,
    int pressedStateColor) {
  StateListDrawable background = new StateListDrawable();
  int c = SizeUtil.dp10;
  float[] r = new float[] {c, c, c, c, c, c, c, c};
  RoundRectShape rr = new RoundRectShape(r, null, null);
  ShapeDrawable cd = new ShapeDrawable();
  cd.setShape(rr);
  cd.getPaint().setColor(pressedStateColor);
  background.addState(new int[] {android.R.attr.state_pressed,
      android.R.attr.state_focused}, cd);
  background.addState(new int[] {-android.R.attr.state_pressed,
      android.R.attr.state_focused}, cd);
  background.addState(new int[] {android.R.attr.state_pressed,
      -android.R.attr.state_focused}, cd);
  ShapeDrawable cd1 = new ShapeDrawable();
  cd1.setShape(rr);
  cd1.getPaint().setColor(normalStateColor);
  background.addState(new int[] {-android.R.attr.state_pressed,
      -android.R.attr.state_focused}, cd1);
  return background;
}

@SuppressWarnings("deprecation")
private ImageView createBackgroundImageView(Context context, boolean fullscreen) {
  BackgroundImageView view = new BackgroundImageView(context, fullscreen);
  view.setScaleType(ImageView.ScaleType.CENTER_CROP);
  int cornerRadius;
  if (!fullscreen) {
    cornerRadius = SizeUtil.dp20;
  } else {
    cornerRadius = 0;
  }
  view.setImageBitmap(options.getBackgroundImage());
  ShapeDrawable footerBackground = new ShapeDrawable();
  footerBackground.setShape(createRoundRect(cornerRadius));
  footerBackground.getPaint().setColor(options.getBackgroundColor());
  if (Build.VERSION.SDK_INT >= 16) {
    view.setBackground(footerBackground);
  } else {
    view.setBackgroundDrawable(footerBackground);
  }
  RelativeLayout.LayoutParams layoutParams = new RelativeLayout.LayoutParams(
      LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
  view.setLayoutParams(layoutParams);
  return view;
}

private Drawable createRectDrawable(int color) {
    RoundRectShape shape = new RoundRectShape(
            new float[]{
                    mCornerRadius,
                    mCornerRadius,
                    mCornerRadius,
                    mCornerRadius,
                    mCornerRadius,
                    mCornerRadius,
                    mCornerRadius,
                    mCornerRadius
            },
            null,
            null);
    ShapeDrawable shapeDrawable = new ShapeDrawable(shape);
    shapeDrawable.getPaint().setColor(color);
    return shapeDrawable;
}

private static Bitmap getCircleIcon(
        Context context, @ColorInt int backgroundColor, int backgroundInset,
        @DrawableRes int iconResId, @ColorInt int iconColor, int iconInset) {
    Drawable[] layers = new Drawable[2];
    ShapeDrawable background = new ShapeDrawable(new OvalShape());
    background.getPaint().setColor(backgroundColor);
    Drawable icon = ContextCompat.getDrawable(context, iconResId);
    Drawable tintedIcon = DrawableCompat.wrap(icon.mutate());
    DrawableCompat.setTint(tintedIcon, iconColor);
    layers[0] = background;
    layers[1] = tintedIcon;
    LayerDrawable layerDrawable = new LayerDrawable(layers);
    layerDrawable.setLayerInset(1, iconInset, iconInset, iconInset, iconInset);
    layerDrawable.setLayerInset(0, backgroundInset, backgroundInset, backgroundInset, backgroundInset);
    return drawableToBitmap(layerDrawable);
}

private StateListDrawable createDefaultOverButtonBgDrawable() {
    int dp12 = (int) ThemeUtils.applyDimensionDp(this, 12.f);
    int dp8 = (int) ThemeUtils.applyDimensionDp(this, 8.f);
    float dp4 = ThemeUtils.applyDimensionDp(this, 4.f);
    float[] round = new float[]{dp4, dp4, dp4, dp4, dp4, dp4, dp4, dp4};
    ShapeDrawable pressedDrawable = new ShapeDrawable(new RoundRectShape(round, null, null));
    pressedDrawable.setPadding(dp12, dp8, dp12, dp8);
    int pressedColor = ThemeUtils.resolveColor(this, R.attr.gallery_toolbar_over_button_pressed_color, R.color.gallery_default_toolbar_over_button_pressed_color);
    pressedDrawable.getPaint().setColor(pressedColor);

    int normalColor = ThemeUtils.resolveColor(this, R.attr.gallery_toolbar_over_button_normal_color, R.color.gallery_default_toolbar_over_button_normal_color);
    ShapeDrawable normalDrawable = new ShapeDrawable(new RoundRectShape(round, null, null));
    normalDrawable.setPadding(dp12, dp8, dp12, dp8);
    normalDrawable.getPaint().setColor(normalColor);

    StateListDrawable stateListDrawable = new StateListDrawable();
    stateListDrawable.addState(new int[]{android.R.attr.state_pressed}, pressedDrawable);
    stateListDrawable.addState(new int[]{}, normalDrawable);

    return stateListDrawable;
}

private void buildColorPickerView(View view, int colorCode) {
    view.setVisibility(View.VISIBLE);

    ShapeDrawable biggerCircle = new ShapeDrawable(new OvalShape());
    biggerCircle.setIntrinsicHeight(20);
    biggerCircle.setIntrinsicWidth(20);
    biggerCircle.setBounds(new Rect(0, 0, 20, 20));
    biggerCircle.getPaint().setColor(colorCode);

    ShapeDrawable smallerCircle = new ShapeDrawable(new OvalShape());
    smallerCircle.setIntrinsicHeight(5);
    smallerCircle.setIntrinsicWidth(5);
    smallerCircle.setBounds(new Rect(0, 0, 5, 5));
    smallerCircle.getPaint().setColor(Color.WHITE);
    smallerCircle.setPadding(10, 10, 10, 10);
    Drawable[] drawables = {smallerCircle, biggerCircle};

    LayerDrawable layerDrawable = new LayerDrawable(drawables);

    view.setBackgroundDrawable(layerDrawable);
}

private Drawable createProductImageDrawable(Product product) {
    final ShapeDrawable background = new ShapeDrawable();
    background.setShape(new OvalShape());
    background.getPaint().setColor(ContextCompat.getColor(getContext(), product.color));

    final BitmapDrawable bitmapDrawable = new BitmapDrawable(getResources(),
        BitmapFactory.decodeResource(getResources(), product.image));

    final LayerDrawable layerDrawable = new LayerDrawable
        (new Drawable[]{background, bitmapDrawable});

    final int padding = (int) getResources().getDimension(R.dimen.spacing_huge);
    layerDrawable.setLayerInset(1, padding, padding, padding, padding);

    return layerDrawable;
}

/**
 * Update the background color of the mBgCircle image view.
 */
public void setBackgroundColor(int colorRes) {
    if (getBackground() instanceof ShapeDrawable) {
        final Resources res = getResources();
        ((ShapeDrawable) getBackground()).getPaint().setColor(res.getColor(colorRes));
    }
}

private static Drawable getRippleMask(@ColorInt int color) {
    float[] outerRadii = new float[8];
    // 3 is the radius of final ripple, instead of 3 we can give required final radius
    Arrays.fill(outerRadii, 3);
    RoundRectShape r = new RoundRectShape(outerRadii, null, null);
    ShapeDrawable shapeDrawable = new ShapeDrawable(r);
    shapeDrawable.getPaint().setColor(color);
    return shapeDrawable;
}

private void change() {
    float[] outerR = new float[]{mSize / 2, mSize / 2, mSize / 2, mSize / 2, mSize / 2, mSize / 2, mSize / 2, mSize / 2};
    Shape shape = new RoundRectShape(outerR, null, null);
    ShapeDrawable shapeDrawable = new ShapeDrawable(shape);
    shapeDrawable.setIntrinsicHeight((int) mSize);
    shapeDrawable.setIntrinsicWidth((int) mSize);
    shapeDrawable.setPadding(0, 0, 0, 0);
    shapeDrawable.getPaint().setColor(mColor);
    shapeDrawable.getPaint().setStyle(Paint.Style.FILL);
    setBackgroundDrawable(shapeDrawable);
    setHeight((int) mSize);
    setMinWidth((int) mSize);
}

/**
     * 位图图像渲染
     * @param canvas
     */
    private void studyBitmapShader(Canvas canvas) {
        //创建BitmapShader
        //其中TileMode.MIRROR x方向镜像  TileMode.REPEAT y方向重复
        mBitmapShader = new BitmapShader(mBitMap, Shader.TileMode.MIRROR, Shader.TileMode.REPEAT);

        //创建矩阵   来缩放图片
        Matrix matrix = new Matrix();
        matrix.setScale(0.2f,0.2f);
        mBitmapShader.setLocalMatrix(matrix);

        mPaint.setAntiAlias(true);
        mPaint.setShader(mBitmapShader);

        //画圆形的图片
//        canvas.drawCircle(mBitMap.getWidth()/2,mBitMap.getHeight()/2,300,mPaint);

        //画矩形的图片
//        Rect rect = new Rect(0,0,600,600);
//        canvas.drawRect(rect,mPaint);
//
        //画椭圆的图片
//        RectF rectf = new RectF(0,0,400,300);
//
//        canvas.drawOval(rectf,mPaint);

        //用shapeDrawable 实现圆形图片
        ShapeDrawable shapeDrawable = new ShapeDrawable(new OvalShape());
        shapeDrawable.getPaint().setShader(mBitmapShader);
        shapeDrawable.setBounds(0,0,400,400);
        shapeDrawable.draw(canvas);

    }

private void setUp(final double diameter) {
    PtrLocalDisplay.init(mParent.getContext());
    final int shadowYOffset = PtrLocalDisplay.dp2px(Y_OFFSET);
    final int shadowXOffset = PtrLocalDisplay.dp2px(X_OFFSET);
    int mShadowRadius = PtrLocalDisplay.dp2px(SHADOW_RADIUS);
    OvalShape oval = new OvalShadow(mShadowRadius, (int) diameter);
    mShadow = new ShapeDrawable(oval);
    if (Build.VERSION.SDK_INT >= 11) {
        mParent.setLayerType(View.LAYER_TYPE_SOFTWARE, mShadow.getPaint());
    }
    mShadow.getPaint().setShadowLayer(mShadowRadius, shadowXOffset, shadowYOffset, KEY_SHADOW_COLOR);
}

private static Drawable getRippleMask(int color) {
    float[] outerRadii = new float[8];
    // 3 is radius of final ripple,
    // instead of 3 you can give required final radius
    Arrays.fill(outerRadii, 3);

    RoundRectShape r = new RoundRectShape(outerRadii, null, null);
    ShapeDrawable shapeDrawable = new ShapeDrawable(r);
    shapeDrawable.getPaint().setColor(color);

    return shapeDrawable;
}