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android.graphics.LinearGradient的实例源码

分类：Java实例代码作者：编程之家
项目：GitHub    文件：HeaderShadowdecoration.java    
public HeaderShadowdecoration(View view,boolean scrollsHorizontally,float parallax,float shadowSize,int columns) {
    mView = view;
    mHorizontal = scrollsHorizontally;
    mParallax = parallax;
    mShadowSize = shadowSize;
    mColumns = columns;

    if (mShadowSize > 0) {
        mShadowPaint = new Paint();
        mShadowPaint.setShader(mHorizontal ?
                new LinearGradient(mShadowSize,new int[]{Color.argb(55,0),Color.argb(55,Color.argb(3,0)},new float[]{0f,.5f,1f},Shader.TileMode.CLAMP) :
                new LinearGradient(0,mShadowSize,Shader.TileMode.CLAMP));
    } else {
        mShadowPaint = null;
    }
}
项目：AndroidSdrRtlTuner    文件：AnalyzerSurface.java    
/**
 * SurfaceHolder.Callback function. This is called every time the dimension changes
 * (and after the SurfaceView is created).
 *
 * @param holder    reference to the surface holder
 * @param format
 * @param width     current width of the surface view
 * @param height    current height of the surface view
 */
@Override
public void surfaceChanged(SurfaceHolder holder,int format,int width,int height) {
    if(this.width != width || this.height != height) {
        this.width = width;
        this.height = height;

        // Recreate the shaders:
        this.fftPaint.setShader(new LinearGradient(0,getFftHeight(),Color.WHITE,Color.parseColor(fftColor),Shader.TileMode.MIRROR));

        // Recreate the waterfall bitmaps:
        this.createWaterfallLineBitmaps();

        // Fix the text size of the text paint objects:
        this.setFontSize(fontSize);
    }
}
项目：stynico    文件：nicoTextView.java    
@Override
   protected void onSizeChanged(int w,int h,int oldw,int oldh)
   {
super.onSizeChanged(w,h,oldw,oldh);
if (mViewWidth == 0)
{
    mViewWidth = getMeasuredWidth();
    if (mViewWidth > 0)
    {
    mPaint = getPaint();
    mLinearGradient = new LinearGradient(-mViewWidth,new int[] { 0x45B3B5,0x45B3B5,0x33ffffff },new float[] { 0,0.5f,1 },Shader.TileMode.CLAMP);
    mPaint.setShader(mLinearGradient);
    mGradientMatrix = new Matrix();
    }
}
   }
项目：JSSample    文件：SProgress.java    
private void init() {
   setLayerType(LAYER_TYPE_SOFTWARE,null);
    bgpaint = new Paint();
    bgpaint.setColor(backColor);
    bgpaint.setAntiAlias(true);

    proPaint = new Paint();
    proPaint.setColor(progressColor);
    LinearGradient linearGradient = new LinearGradient(0,width,height,progressColor,progressendcolor,Shader.TileMode.CLAMP);
    proPaint.setShader(linearGradient);
    proPaint.setAntiAlias(true);

    textPaint = new Paint();
    textPaint.setColor(textColor);
    textPaint.setAntiAlias(true);
    textPaint.setTextSize(textsize);
    textbaseline = getFontstart(textPaint);
    rectbg = new RectF();
    rectprogress = new RectF();
}
项目：PeSanKita-android    文件：VerticalSlideColorPicker.java    
@Override
protected void onSizeChanged(int w,int oldh) {
  super.onSizeChanged(w,oldh);

  viewWidth = w;
  viewHeight = h;

  centerX           = viewWidth / 2;
  colorPickerRadius = (viewWidth / 2) - borderWidth;

  colorPickerBody = new RectF(centerX - colorPickerRadius,borderWidth + colorPickerRadius,centerX + colorPickerRadius,viewHeight - (borderWidth + colorPickerRadius));

  LinearGradient gradient = new LinearGradient(0,colorPickerBody.top,colorPickerBody.bottom,colors,null,Shader.TileMode.CLAMP);
  paint.setShader(gradient);

  if (bitmap != null) {
    bitmap.recycle();
  }

  bitmap       = Bitmap.createBitmap(viewWidth,viewHeight,Bitmap.Config.ARGB_8888);
  bitmapCanvas = new Canvas(bitmap);

  resetToDefault();
}
项目：WaveAudioVizualization    文件：VoiceWaveViewTV.java    
@Override   // will be called on UI thread
public void onSurfaceTextureAvailable(SurfaceTexture st,int height) {
    Log.d(TAG,"onSurfaceTextureAvailable(" + width + "x" + height + ")");
    mWidth = width;
    mHeight = height;
    mMaxAmpl = height / 2;
    mPaints.get(0).setShader(new LinearGradient(0,mWidth,mHeight,Color.parseColor("#CA67B7"),Color.parseColor("#C081C1"),Shader.TileMode.MIRROR));
    mPaints.get(0).setstrokeWidth(ScreenUtils.dp2px(getContext(),2));
    mPaints.get(1).setColor(Color.parseColor("#D5E3FA"));
    mPaints.get(1).setstrokeWidth(ScreenUtils.dp2px(getContext(),2));
    mPaints.get(2).setstrokeWidth(ScreenUtils.dp2px(getContext(),1));
    mPaints.get(3).setstrokeWidth(ScreenUtils.dp2px(getContext(),1));
    mPaints.get(2).setShader(new LinearGradient(0,Color.parseColor("#E67EA5"),Color.parseColor("#7F7AE1"),Shader.TileMode.MIRROR));
    mPaints.get(3).setShader(new LinearGradient(0,Shader.TileMode.MIRROR));
    synchronized (mlock) {
        mSurfaceTexture = st;
        mlock.notify();
    }
}
项目：planetcon    文件：ColorPicker.java    
private void drawColorSquare(Canvas canvas) {
    int pureColor,brightColor,darkColor,transparentColor;

    // pureColor
    mHSV[0] = mColorHSV[0];
    mHSV[1] = 1; mHSV[2] = 1;
    pureColor = Color.HSVToColor(mHSV);
    // brightColor
    mHSV[1] = 0; mHSV[2] = 1;
    brightColor = Color.HSVToColor(mHSV);
    // darkColor
    mHSV[1] = 1; mHSV[2] = 0;
    darkColor = Color.HSVToColor(255,mHSV);
    // alphaColor
    mHSV[1] = 0; mHSV[2] = 0;
    transparentColor = Color.HSVToColor(0,mHSV);

    // drawn without compose shader,but looks worse
    Shader gradient1 = new LinearGradient(mSquareRect.right,mSquareRect.bottom,mSquareRect.right,mSquareRect.top,pureColor,TileMode.CLAMP);
    Shader gradient2 = new LinearGradient(mSquareRect.right,mSquareRect.left,transparentColor,TileMode.CLAMP);

    mColorPaint.setShader(gradient1);
    canvas.drawRect(mSquareRect,mColorPaint);
    mColorPaint.setShader(gradient2);
    canvas.drawRect(mSquareRect,mColorPaint);
}
项目：MainCalendar    文件：GradientShaderTextView.java    
@Override
protected void onSizeChanged(int w,int oldW,int oldH) {
    super.onSizeChanged(w,oldW,oldH);
    if (mViewWidth == 0) {
        mViewWidth = getMeasuredWidth();
        if (mViewWidth > 0) {
            Paint paint = getPaint();
            String text = getText().toString();
            mTextWidth = paint.measureText(text);
            int size = (int)paint.measureText(text);
            int startX = (mViewWidth - size) / 2;
            mLinearGradient = new LinearGradient(startX + 1,new int[] { 0x90ffffff,0xffffffff,0x90ffffff },Shader.TileMode.CLAMP); //边缘融合
            paint.setShader(mLinearGradient);
            mGradientMatrix = new Matrix();
        }
    }
}
项目：chromium-for-android-56-debug-video    文件：FadingShadow.java    
/**
 * @param shadowColor The color of the shadow,e.g. 0x11000000.
 */
public FadingShadow(int shadowColor) {
    final int n = SMOOTH_ALGORITHM_INTERPOLATION_POINTS_NUM;
    float[] positions = new float[n];
    int[] colors = new int[n];
    int transparentShadowColor = shadowColor & 0x00FFFFFF;
    int shadowAlpha = Color.alpha(shadowColor);

    // Piece-wise linear interpolation of the smooth cubic function below.
    for (int i = 0; i < n; ++i) {
        float x = (float) i / (n - 1);
        // polynomial computation by Estrin's scheme.
        float value = (1.0f - 2.2f * x) + (1.8f - 0.6f * x) * (x * x);

        positions[i] = x;
        colors[i] = (Math.round(shadowAlpha * value) << 24) | transparentShadowColor;
    }

    mShadowShader = new LinearGradient(0,1,positions,Shader.TileMode.CLAMP);

}
项目：microMathematics    文件：SaturationBar.java    
/**
 * Set the bar color. <br>
 * <br>
 * Its discouraged to use this method.
 * 
 * @param color
 */
public void setColor(int color) {
    int x1,y1;
    if (mOrientation == ORIENTATION_HORIZONTAL) {
        x1 = (mBarLength + mBarPointerHaloRadius);
        y1 = mBarThickness;
    } else {
        x1 = mBarThickness;
        y1 = (mBarLength + mBarPointerHaloRadius);
    }

    Color.colorToHSV(color,mHSVColor);
    shader = new LinearGradient(mBarPointerHaloRadius,x1,y1,new int[] { Color.WHITE,color },Shader.TileMode.CLAMP);
    mBarPaint.setShader(shader);
    calculateColor(mBarPointerPosition);
    mBarPointerPaint.setColor(mColor);
    if (mPicker != null) {
        mPicker.setNewCenterColor(mColor);
        if (mPicker.hasValueBar())
            mPicker.changeValueBarColor(mColor);
        else if (mPicker.hasOpacityBar())
            mPicker.changeOpacityBarColor(mColor);
    }
    invalidate();
}
项目：boohee_v5.6    文件：RoundRectDrawableWithShadow.java    
private void buildShadowCorners() {
    RectF innerBounds = new RectF(-this.mCornerRadius,-this.mCornerRadius,this.mCornerRadius,this.mCornerRadius);
    RectF outerBounds = new RectF(innerBounds);
    outerBounds.inset(-this.mShadowSize,-this.mShadowSize);
    if (this.mCornerShadowPath == null) {
        this.mCornerShadowPath = new Path();
    } else {
        this.mCornerShadowPath.reset();
    }
    this.mCornerShadowPath.setFillType(FillType.EVEN_ODD);
    this.mCornerShadowPath.moveto(-this.mCornerRadius,0.0f);
    this.mCornerShadowPath.rLineto(-this.mShadowSize,0.0f);
    this.mCornerShadowPath.arcTo(outerBounds,180.0f,90.0f,false);
    this.mCornerShadowPath.arcTo(innerBounds,270.0f,-90.0f,false);
    this.mCornerShadowPath.close();
    float startRatio = this.mCornerRadius / (this.mCornerRadius + this.mShadowSize);
    this.mCornerShadowPaint.setShader(new RadialGradient(0.0f,0.0f,this.mCornerRadius + this.mShadowSize,new int[]{this.mShadowStartColor,this.mShadowStartColor,this.mShadowEndColor},new float[]{0.0f,startRatio,1.0f},TileMode.CLAMP));
    this.mEdgeShadowPaint.setShader(new LinearGradient(0.0f,(-this.mCornerRadius) + this.mShadowSize,(-this.mCornerRadius) - this.mShadowSize,TileMode.CLAMP));
    this.mEdgeShadowPaint.setAntiAlias(false);
}
项目：FakeWeather    文件：OvercastType.java    
@Override
public void generateElements() {
    cloudShader = new LinearGradient(getWidth() / 2,getWidth() / 2,getHeight() * 0.618f,0xFFFFFFFF,0x00FFFFFF,Shader.TileMode.CLAMP);
    final float textSize = getHeight() / 32f;
    fanPath.reset();
    final float fanSize = textSize * 0.2f;// 风扇底部半圆的半径
    final float fanHeight = textSize * 2f;
    final float fanCenterOffsetY = fanSize * 1.6f;
    fanPath.addArc(new RectF(-fanSize,-fanSize - fanCenterOffsetY,fanSize,fanSize - fanCenterOffsetY),180);
    fanPath.quadTo(-fanSize * 1f,-fanHeight * 0.5f - fanCenterOffsetY,-fanHeight - fanCenterOffsetY);
    fanPath.quadTo(fanSize * 1f,-fanCenterOffsetY);
    fanPath.close();

    fanPillarPath.reset();
    final float fanPillarsize = textSize * 0.20f;// 柱子的宽度
    fanPillarPath.moveto(0,0);
    fanPillerHeight = textSize * 4f;// 柱子的高度
    fanPillarPath.lineto(2,0);
    fanPillarPath.lineto(fanPillarsize,fanPillerHeight);
    fanPillarPath.lineto(-fanPillarsize,fanPillerHeight);
    fanPillarPath.lineto(-2,0);
    fanPillarPath.close();
}
项目：xlight_android_native    文件：ValueBar.java    
/**
 * Set the bar color. <br>
 * <br>
 * Its discouraged to use this method.
 * 
 * @param color
 */
public void setColor(int color) {
    int x1,y1;
    if(mOrientation == ORIENTATION_HORIZONTAL) {
        x1 = (mBarLength + mBarPointerHaloRadius);
        y1 = mBarThickness;
    }
    else {
        x1 = mBarThickness;
        y1 = (mBarLength + mBarPointerHaloRadius);
    }

    Color.colorToHSV(color,new int[] {
                    color,Color.BLACK },Shader.TileMode.CLAMP);
    mBarPaint.setShader(shader);
    calculateColor(mBarPointerPosition);
    mBarPointerPaint.setColor(mColor);
    if (mPicker != null) {
        mPicker.setNewCenterColor(mColor);
        if(mPicker.hasOpacityBar())
            mPicker.changeOpacityBarColor(mColor);
    }
    invalidate();
}
项目：ShimmerLayout    文件：ShimmerLayout.java    
private Bitmap getSourceMaskBitmap() {
    if (sourceMaskBitmap != null) {
        return sourceMaskBitmap;
    }

    int width = maskRect.width();
    int height = getHeight();

    final int edgeColor = reduceColorAlphaValuetoZero(shimmerColor);
    LinearGradient gradient = new LinearGradient(
            -maskRect.left,width + maskRect.left,new int[]{edgeColor,shimmerColor,edgeColor},getGradientColordistribution(),Shader.TileMode.CLAMP);
    Paint paint = new Paint();
    paint.setShader(gradient);

    sourceMaskBitmap = createBitmap(width,height);
    Canvas canvas = new Canvas(sourceMaskBitmap);
    canvas.rotate(shimmerAngle,width / 2,height / 2);
    canvas.drawRect(-maskRect.left,maskRect.top,maskRect.bottom,paint);

    return sourceMaskBitmap;
}
项目：spline    文件：HueDrawable.java    
@Override
public void draw(Canvas canvas) {
    Rect b = getBounds();

    Paint huePaint = new Paint();
    huePaint.setShader(new LinearGradient(0,b.width(),new int[]{
                    0xFFFF0000,0xFFFFFF00,0xFF00FF00,0xFF00FFFF,0xFF0000FF,0xFFFF00FF,0xFFFF0000
            },Shader.TileMode.REPEAT)
    );
    canvas.drawRect(b,huePaint);
}
项目：Cable-Android    文件：VerticalSlideColorPicker.java    
@Override
protected void onSizeChanged(int w,Bitmap.Config.ARGB_8888);
  bitmapCanvas = new Canvas(bitmap);

  resetToDefault();
}
项目：terminal-seekbar    文件：TerminalSeekBar.java    
/**
 * getting the fields initialized ...
 */
private void initialize() {

    absLeft = getPaddingLeft() + mPaddingSize;
    absRight = getWidth() - getPaddingRight() - mPaddingSize;
    absTop = getPaddingTop() + mPaddingSize;
    absBottom = getHeight() - getPaddingBottom() - mPaddingSize;

    thumbRadius = thumbHeight / 2;
    mPaddingSize = (int) thumbRadius;
    barWidth = absRight - absLeft;

    mSeekBarRect = new Rect(absLeft,absTop,absRight,absTop + barHeight);

    mSeekBarGradient = new LinearGradient(0,mSeekBarRect.width(),mBarColor,Shader.TileMode.MIRROR);
    mBarRectPaint = new Paint();
    mBarRectPaint.setShader(mSeekBarGradient);
    mBarRectPaint.setAntiAlias(true);

    terminalRadius = barHeight / 2 + 5;

}
项目：GitHub    文件：SpanActivity.java    
private void initAnimspan() {
    mShaderWidth = 64 * density * 4;
    mShader = new LinearGradient(0,mShaderWidth,getResources().getIntArray(R.array.rainbow),Shader.TileMode.REPEAT);
    matrix = new Matrix();

    mBlurMaskFilterSpan = new BlurMaskFilterSpan(25);

    mShadowSpan = new ShadowSpan(8,8,Color.WHITE);

    mForegroundAlphaColorSpan = new ForegroundAlphaColorSpan(Color.TRANSPARENT);

    mForegroundAlphaColorSpangroup = new ForegroundAlphaColorSpangroup(0);

    mPrinterString = "打印动画，后面的文字是为了测试打印效果...";

    mSpanUtils = new SpanUtils()
            .appendLine("彩虹动画").setFontSize(64,true).setShader(mShader)
            .appendLine("模糊动画").setFontSize(64,true).setSpans(mBlurMaskFilterSpan)
            .appendLine("阴影动画").setFontSize(64,true).setBackgroundColor(Color.BLACK).setSpans(mShadowSpan)
            .appendLine("透明动画").setFontSize(64,true).setSpans(mForegroundAlphaColorSpan);
    for (int i = 0,len = mPrinterString.length(); i < len; ++i) {
        ForegroundAlphaColorSpan span = new ForegroundAlphaColorSpan(Color.TRANSPARENT);
        mSpanUtils.append(mPrinterString.substring(i,i + 1)).setSpans(span);
        mForegroundAlphaColorSpangroup.addSpan(span);
    }
    animssb = mSpanUtils.create();
}
项目：Android-UtilCode    文件：ImageUtils.java    
/**
 * 添加倒影
 *
 * @param src              源图片的
 * @param reflectionHeight 倒影高度
 * @param recycle          是否回收
 * @return 带倒影图片
 */
public static Bitmap addReflection(Bitmap src,int reflectionHeight,boolean recycle) {
    if (isEmptyBitmap(src)) return null;
    // 原图与倒影之间的间距
    final int REFLECTION_GAP = 0;
    int srcWidth = src.getWidth();
    int srcHeight = src.getHeight();
    Matrix matrix = new Matrix();
    matrix.preScale(1,-1);
    Bitmap reflectionBitmap = Bitmap.createBitmap(src,srcHeight - reflectionHeight,srcWidth,reflectionHeight,matrix,false);
    Bitmap ret = Bitmap.createBitmap(srcWidth,srcHeight + reflectionHeight,src.getConfig());
    Canvas canvas = new Canvas(ret);
    canvas.drawBitmap(src,null);
    canvas.drawBitmap(reflectionBitmap,srcHeight + REFLECTION_GAP,null);
    Paint paint = new Paint();
    paint.setAntiAlias(true);
    LinearGradient shader = new LinearGradient(0,srcHeight,ret.getHeight() + REFLECTION_GAP,0x70FFFFFF,Shader.TileMode.MIRROR);
    paint.setShader(shader);
    paint.setXfermode(new PorterDuffXfermode(android.graphics.PorterDuff.Mode.DST_IN));
    canvas.drawRect(0,ret.getHeight(),paint);
    if (!reflectionBitmap.isRecycled()) reflectionBitmap.recycle();
    if (recycle && !src.isRecycled()) src.recycle();
    return ret;
}
项目：HeadlineNews    文件：ImageUtils.java    
/**
 * 添加倒影
 *
 * @param src              源图片的
 * @param reflectionHeight 倒影高度
 * @param recycle          是否回收
 * @return 带倒影图片
 */
public static Bitmap addReflection(final Bitmap src,final int reflectionHeight,final boolean recycle) {
    if (isEmptyBitmap(src)) return null;
    // 原图与倒影之间的间距
    final int REFLECTION_GAP = 0;
    int srcWidth = src.getWidth();
    int srcHeight = src.getHeight();
    Matrix matrix = new Matrix();
    matrix.preScale(1,Shader.TileMode.MIRROR);
    paint.setShader(shader);
    paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.DST_IN));
    canvas.drawRect(0,paint);
    if (!reflectionBitmap.isRecycled()) reflectionBitmap.recycle();
    if (recycle && !src.isRecycled()) src.recycle();
    return ret;
}
项目：phonk    文件：PCanvas.java    
@ProtoMethod(description = "Create a linear shader",example = "")
@ProtoMethodParam(params = {"x1","y1","x2","y2","colorHex1","colorHex2","tileMode"})
public Shader linearShader(float x1,float y1,float x2,float y2,String c1,String c2) {
    Shader.TileMode mode = Shader.TileMode.REPEAT;

    Shader shader = new LinearGradient(x1,x2,y2,Color.parseColor(c1),Color.parseColor(c2),mode);
    return shader;
}
项目：MyCalendar    文件：FloatingActionButtonLibrary.java    
private Drawable createInnerstrokesDrawable(final int color,float strokeWidth) {
  if (!mstrokeVisible) {
    return new ColorDrawable(Color.TRANSPARENT);
  }

  ShapeDrawable shapeDrawable = new ShapeDrawable(new ovalShape());

  final int bottomstrokeColor = darkenColor(color);
  final int bottomstrokeColorHalfTransparent = halfTransparent(bottomstrokeColor);
  final int topstrokeColor = lightenColor(color);
  final int topstrokeColorHalfTransparent = halfTransparent(topstrokeColor);

  final Paint paint = shapeDrawable.getPaint();
  paint.setAntiAlias(true);
  paint.setstrokeWidth(strokeWidth);
  paint.setStyle(Style.stroke);
  shapeDrawable.setShaderFactory(new ShaderFactory() {
    @Override
    public Shader resize(int width,int height) {
      return new LinearGradient(width / 2,new int[] { topstrokeColor,topstrokeColorHalfTransparent,color,bottomstrokeColorHalfTransparent,bottomstrokeColor },new float[] { 0f,0.2f,0.8f,1f },TileMode.CLAMP
      );
    }
  });

  return shapeDrawable;
}
项目：WaveAudioVizualization    文件：VoiceWaveView.java    
@Override
    public void surfaceChanged(SurfaceHolder surfaceHolder,int w,int h) {
        mHeight = h;
        mMaxAmpl = h / 2;
//        mCurrentAmpl = mMaxAmpl;
        mWidth = w;
        mPaints.get(0).setShader(new LinearGradient(0,Shader.TileMode.MIRROR));
        mPaints.get(0).setstrokeWidth(ScreenUtils.dp2px(getContext(),2));
        mPaints.get(1).setColor(Color.parseColor("#D5E3FA"));
        mPaints.get(1).setstrokeWidth(ScreenUtils.dp2px(getContext(),2));
        mPaints.get(2).setstrokeWidth(ScreenUtils.dp2px(getContext(),1));
        mPaints.get(3).setstrokeWidth(ScreenUtils.dp2px(getContext(),1));
        mPaints.get(2).setShader(new LinearGradient(0,Shader.TileMode.MIRROR));
        mPaints.get(3).setShader(new LinearGradient(0,Shader.TileMode.MIRROR));
    }
项目：YGuider    文件：MainActivity.java    
private Paint getPaint() {
    Paint p = new Paint();
    p.setStyle(Paint.Style.stroke);
    p.setstrokeWidth(10);
    p.setShader(new LinearGradient(0,10,Color.YELLOW,Color.RED,Shader.TileMode.REPEAT));
    p.setColor(Color.BLUE);
    return p;
}
项目：RLibrary    文件：ImageUtils.java    
/**
 * 添加倒影
 *
 * @param src              源图片的
 * @param reflectionHeight 倒影高度
 * @param recycle          是否回收
 * @return 带倒影图片
 */
public static Bitmap addReflection(Bitmap src,paint);
    if (!reflectionBitmap.isRecycled()) reflectionBitmap.recycle();
    if (recycle && !src.isRecycled()) src.recycle();
    return ret;
}
项目：planetcon    文件：ColorPicker.java    
private void drawColorDiamond(Canvas canvas,double hueAngle,double radius) {
    int pureColor,darkColor;
    double leftAngle = hueAngle + Math.toradians(120);
    double rightAngle = hueAngle - Math.toradians(120);

    float tipAngleX = xToDraw(Math.cos(hueAngle) * radius);
    float tipAngleY = yToDraw(Math.sin(hueAngle) * radius);
    float leftAngleX = xToDraw(Math.cos(leftAngle) * radius);
    float leftAngleY = yToDraw(Math.sin(leftAngle) * radius);
    float rightAngleX = xToDraw(Math.cos(rightAngle) * radius);
    float rightAngleY = yToDraw(Math.sin(rightAngle) * radius);

    mTrianglePath.reset();
    mTrianglePath.moveto(tipAngleX,tipAngleY);
    mTrianglePath.lineto(rightAngleX,rightAngleY);
    mTrianglePath.lineto(leftAngleX,leftAngleY);
    mTrianglePath.lineto(tipAngleX,tipAngleY);

    // pureColor
    mHSV[0] = mColorHSV[0];
    mHSV[1] = 1; mHSV[2] = 1;
    pureColor = Color.HSVToColor(mHSV);
    // brightColor
    mHSV[1] = 0; mHSV[2] = 1;
    brightColor = Color.HSVToColor(mHSV);
    // darkColor
    mHSV[1] = 1; mHSV[2] = 0;
    darkColor = Color.HSVToColor(mHSV);

    Shader gradient1 = new LinearGradient(leftAngleX,leftAngleY,tipAngleX,tipAngleY,TileMode.CLAMP);
    Shader gradient2 = new LinearGradient(leftAngleX,rightAngleX,rightAngleY,TileMode.CLAMP);
    ComposeShader composeShader = new ComposeShader(gradient1,gradient2,PorterDuff.Mode.MULTIPLY);

    mColorPaint.setShader(composeShader);
    canvas.drawPath(mTrianglePath,mColorPaint);
}
项目：Building-Android-UIs-with-custom-views    文件：OwnCustomView.java    
@Override
protected void onDraw(Canvas canvas) {
    if (needsUpdate) {
        int[] colors = new int[] {topLeftColor,topRightColor,bottomrightColor,bottomLeftColor};

        LinearGradient lg = new LinearGradient(0,getWidth(),getHeight(),Shader.TileMode.CLAMP);
        backgroundPaint.setShader(lg);
        needsUpdate = false;
    }

    canvas.drawRect(0,backgroundPaint);
    super.onDraw(canvas);
}
项目：boohee_v5.6    文件：DayView.java    
private static Drawable generateCircleDrawable(final int color) {
    ShapeDrawable drawable = new ShapeDrawable(new ovalShape());
    drawable.setShaderFactory(new ShaderFactory() {
        public Shader resize(int width,int height) {
            return new LinearGradient(0.0f,TileMode.REPEAT);
        }
    });
    return drawable;
}
项目：snippety    文件：multicolorSpan.java    
@Override
public void updateDrawState(TextPaint paint) {
    paint.setStyle(Paint.Style.FILL);
    Shader shader = new LinearGradient(0,paint.getTextSize() * colors.length,Shader.TileMode.MIRROR);
    Matrix matrix = new Matrix();
    matrix.setRotate(angle);
    shader.setLocalMatrix(matrix);
    paint.setShader(shader);
}
项目：ChangeTabLayout    文件：ChangeTabStrip.java    
/**
 * 绘制左边阴影
 */
private void drawShadow(Canvas canvas){
    final float width = shadowWidth * (1 - selectionOffsetX);
    LinearGradient linearGradient = new LinearGradient(0,new int[] {shadowColor,Color.TRANSPARENT},new float[]{shadowProportion,Shader.TileMode.CLAMP);
    shadowPaint.setShader(linearGradient);
    canvas.drawRect(0,shadowPaint);
}
项目：BBSSDK-for-Android    文件：ImageUtils.java    
/**
 * 添加倒影
 *
 * @param src              源图片的
 * @param reflectionHeight 倒影高度
 * @param recycle          是否回收
 * @return 带倒影图片
 */
public static Bitmap addReflection(final Bitmap src,final boolean recycle) {
    if (isEmptyBitmap(src)) {
        return null;
    }
    // 原图与倒影之间的间距
    final int reflectiongap = 0;
    int srcWidth = src.getWidth();
    int srcHeight = src.getHeight();
    Matrix matrix = new Matrix();
    matrix.preScale(1,srcHeight + reflectiongap,null);
    Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
    LinearGradient shader = new LinearGradient(
            0,ret.getHeight() + reflectiongap,paint);
    if (!reflectionBitmap.isRecycled()) {
        reflectionBitmap.recycle();
    }
    if (recycle && !src.isRecycled()) {
        src.recycle();
    }
    return ret;
}
项目：IdealMedia    文件：MediaUtils.java    
public static Bitmap modifyTrackCellArtworkBitmap(Bitmap source){
    if (source == null)
        return null;

    int w = source.getWidth();
    int h = source.getHeight();

    Bitmap scaled = Bitmap.createScaledBitmap(source,w,true);

    w = scaled.getWidth();
    h = scaled.getHeight();

    Bitmap overlay = Bitmap.createBitmap(w,Bitmap.Config.ARGB_8888);

    Canvas canvas = new Canvas(overlay);
    final Paint paint = new Paint();

    canvas.drawBitmap(scaled,null);

    Shader shader = new LinearGradient(
            0,0x77FFFFFF,Shader.TileMode.CLAMP
    );

    paint.setShader(shader);
    paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.DST_IN));

    canvas.drawRect(0,paint);

    return overlay;
}
项目：SafeView    文件：SafeView.java    
private void init() {
    mPaint = new Paint();
    mPaint.setAntiAlias(true);
    mPaint.setstrokeCap(Paint.Cap.ROUND);// 圆角笔触
    mLeftLinearGradient = new LinearGradient(0,mCy - OFFSET,0xddffffff,0x00000000,Shader.TileMode.CLAMP);
    mRightLinearGradient = new LinearGradient(mCy - OFFSET,mCy / 2,Shader.TileMode.CLAMP);
}
项目：SmartChart    文件：LineChartRenderer.java    
private void drawArea(Canvas canvas,Line line) {
    final int linesize = line.getValues().size();
    if (linesize < 2) {
        //No point to draw area for one point or empty line.
        return;
    }

    final Rect contentRect = computator.getContentRectMinusAllMargins();
    final float baseRawValue = Math.min(contentRect.bottom,Math.max(computator.computerawY(baseValue),contentRect.top));
    //That checks works only if the last point is the right most one.
    final float left = Math.max(computator.computerawX(line.getValues().get(0).getX()),contentRect.left);
    final float right = Math.min(computator.computerawX(line.getValues().get(linesize - 1).getX()),contentRect.right);

    path.lineto(right,baseRawValue);
    path.lineto(left,baseRawValue);
    path.close();

    linePaint.setStyle(Paint.Style.FILL);
    linePaint.setAlpha(line.getAreaTransparency());
    linePaint.setShader(line.getGradientToTransparent() ?
            new LinearGradient(0,canvas.getHeight(),line.getColor(),line.getColor() & 0x00ffffff,Shader.TileMode.MIRROR) :
            null);
    canvas.drawPath(path,linePaint);
    linePaint.setStyle(Paint.Style.stroke);
}
项目：Oblique    文件：Config.java    
public Shader getLinearGradient(GradientAngle gradientAngle,float width,float height) {
    float x1 = 0,x2 = 0,y1 = 0,y2 = 0;
    switch (gradientAngle) {
        case LEFT_TO_RIGHT:
            x2 = width;
            break;
        case RIGHT_TO_LEFT:
            x1 = width;
            break;
        case TOP_TO_BottOM:
            y2 = height;
            break;
        case BottOM_TO_TOP:
            y1 = height;
            break;
        case LEFT_TOP_TO_RIGHT_BottOM:
            x2 = width;
            y2 = height;
            break;
        case RIGHT_BottOM_TO_LEFT_TOP:
            x1 = width;
            y1 = height;
            break;
        case LEFT_BottOM_TO_RIGHT_TOP:
            x2 = width;
            y1 = height;
            break;
        case RIGHT_TOP_TO_LEFT_BottOM:
            x1 = width;
            y2 = height;
            break;
    }
    return new LinearGradient(x1,startColor,endColor,Shader.TileMode.CLAMP);
}
项目：gradient-progress    文件：GradientProgress.java    
private LinearGradient getNewGradient(float barHeight,int color) {
    return new LinearGradient(
            0,barHeight,getScaledColor(color,GRADIENT_SCALE),Shader.TileMode.CLAMP);
}
项目：LJFramework    文件：ImageUtils.java    
/**
 * 添加倒影
 *
 * @param src 源图片的
 * @param reflectionHeight 倒影高度
 * @param recycle 是否回收
 * @return 带倒影图片
 */
public static Bitmap addReflection(Bitmap src,boolean recycle) {
    if (isEmptyBitmap(src)) {
        return null;
    }
    // 原图与倒影之间的间距
    final int REFLECTION_GAP = 0;
    int srcWidth = src.getWidth();
    int srcHeight = src.getHeight();
    Matrix matrix = new Matrix();
    matrix.preScale(1,srcHeight -
            reflectionHeight,ret.getHeight() +
                    REFLECTION_GAP,paint);
    if (!reflectionBitmap.isRecycled()) {
        reflectionBitmap.recycle();
    }
    if (recycle && !src.isRecycled()) {
        src.recycle();
    }
    return ret;
}
项目：PlusGram    文件：ColorPicker.java    
@SuppressLint("DrawAllocation")
@Override
protected void onLayout(boolean changed,int left,int top,int right,int bottom) {
    int width = right - left;
    int height = bottom - top;

    int backHeight = getMeasuredHeight() - AndroidUtilities.dp(26) - AndroidUtilities.dp(64);
    gradientPaint.setShader(new LinearGradient(0,AndroidUtilities.dp(26),backHeight + AndroidUtilities.dp(26),COLORS,LOCATIONS,Shader.TileMode.REPEAT));
    int x = width - AndroidUtilities.dp(26) - AndroidUtilities.dp(8);
    int y = AndroidUtilities.dp(26);
    rectF.set(x,y,x + AndroidUtilities.dp(8),y + backHeight);

    settingsButton.layout(width - settingsButton.getMeasuredWidth(),height - AndroidUtilities.dp(52),height);
}
项目：android-audio-visualizer    文件：BlazingColorVisualizer.java    
@Override
protected void init() {
    shader = new LinearGradient(0,Color.BLUE,Color.GREEN,Shader.TileMode.MIRROR /*or REPEAT*/);
}
项目：lineagex86    文件：ColorPickerView.java    
private void drawAlphaPanel(Canvas canvas) {
    if (!mShowAlphaPanel || mAlphaRect == null || mAlphaPattern == null) {
        return;
    }

    final RectF rect = mAlphaRect;

    if (BORDER_WIDTH_PX > 0) {
        mBorderPaint.setColor(mBorderColor);
        canvas.drawRect(rect.left - BORDER_WIDTH_PX,rect.top - BORDER_WIDTH_PX,rect.right + BORDER_WIDTH_PX,rect.bottom + BORDER_WIDTH_PX,mBorderPaint);
    }

    mAlphaPattern.draw(canvas);

    float[] hsv = new float[] {
            mHue,mSat,mVal
    };
    int color = Color.HSVToColor(hsv);
    int acolor = Color.HSVToColor(0,hsv);

    mAlphaShader = new LinearGradient(rect.left,rect.top,rect.right,acolor,TileMode.CLAMP);

    mAlphaPaint.setShader(mAlphaShader);

    canvas.drawRect(rect,mAlphaPaint);

    if (mAlphaSliderText != null && mAlphaSliderText != "") {
        canvas.drawText(mAlphaSliderText,rect.centerX(),rect.centerY() + 4 * mDensity,mAlphaTextPaint);
    }

    float rectWidth = 4 * mDensity / 2;
    Point p = alphaToPoint(mAlpha);

    RectF r = new RectF();
    r.left = p.x - rectWidth;
    r.right = p.x + rectWidth;
    r.top = rect.top - RECTANGLE_TRACKER_OFFSET;
    r.bottom = rect.bottom + RECTANGLE_TRACKER_OFFSET;

    canvas.drawRoundRect(r,2,mHueTrackerPaint);
}

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