Examples with SweepGradient android.graphics.SweepGradient used on opensource projects

Example 26 with SweepGradient

use of android.graphics.SweepGradient in project openhab-android by openhab.

the class ColorPicker method init.

private void init(AttributeSet attrs, int defStyle) {
    final TypedArray a = getContext().obtainStyledAttributes(attrs, R.styleable.ColorPicker, defStyle, 0);
    mColorWheelStrokeWidth = a.getInteger(R.styleable.ColorPicker_wheel_size, 16);
    mPointerRadius = a.getInteger(R.styleable.ColorPicker_pointer_size, 32);
    // initialize X positions of brightness and saturation sliders
    mBrightnessSliderX = mPointerRadius * 2;
    mSaturationSliderX = -mPointerRadius * 2;
    Log.d(TAG, String.format("init %f %f %f %f", mBrightnessSliderStartY, mBrightnessSliderEndY, mSaturationSliderStartY, mSaturationSliderEndY));
    a.recycle();
    Shader s = new SweepGradient(0, 0, COLORS, null);
    mColorWheelPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
    mColorWheelPaint.setShader(s);
    mColorWheelPaint.setStyle(Paint.Style.STROKE);
    mColorWheelPaint.setStrokeWidth(mColorWheelStrokeWidth);
    mBrightnessSliderPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
    mPointerHaloPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
    mPointerHaloPaint.setColor(Color.BLACK);
    mPointerHaloPaint.setStrokeWidth(5);
    mPointerHaloPaint.setAlpha(0x60);
    mPointerColor = new Paint(Paint.ANTI_ALIAS_FLAG);
    mPointerColor.setStrokeWidth(5);
    mBrightnessPointerHaloPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
    mBrightnessPointerHaloPaint.setColor(Color.BLACK);
    mBrightnessPointerHaloPaint.setStrokeWidth(5);
    mBrightnessPointerHaloPaint.setAlpha(0x60);
    mBrightnessPointerBorderPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
    mBrightnessPointerBorderPaint.setColor(Color.WHITE);
    mBrightnessPointerBorderPaint.setStrokeWidth(2);
    mBrightnessPointerBorderPaint.setAlpha(0x60);
    mBrightnessPointerColor = new Paint(Paint.ANTI_ALIAS_FLAG);
    mBrightnessPointerColor.setStrokeWidth(5);
    mSaturationSliderPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
    mSaturationPointerHaloPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
    mSaturationPointerHaloPaint.setColor(Color.BLACK);
    mSaturationPointerHaloPaint.setStrokeWidth(5);
    mSaturationPointerHaloPaint.setAlpha(0x60);
    mSaturationPointerColor = new Paint(Paint.ANTI_ALIAS_FLAG);
    mSaturationPointerColor.setStrokeWidth(5);
    mAngle = (float) (-Math.PI / 2);
    mPointerColor.setColor(calculateColor(mAngle));
    // mBrightnessPointerColor.setColor(calculateColor(mAngle));
    mBrightnessPointerColor.setColor(Color.BLACK);
}

Example 27 with SweepGradient

use of android.graphics.SweepGradient in project AisenWeiBo by wangdan.

the class ColorPicker method onDraw.

@SuppressLint("DrawAllocation")
@Override
protected void onDraw(Canvas canvas) {
    int centerX = getWidth() / 2;
    int centerY = getHeight() / 2;
    // drawing color wheel
    canvas.drawBitmap(colorWheelBitmap, centerX - colorWheelRadius, centerY - colorWheelRadius, null);
    // drawing color view
    colorViewPaint.setColor(Color.HSVToColor(colorHSV));
    canvas.drawPath(colorViewPath, colorViewPaint);
    // drawing value slider
    float[] hsv = new float[] { colorHSV[0], colorHSV[1], 1f };
    SweepGradient sweepGradient = new SweepGradient(centerX, centerY, new int[] { Color.BLACK, Color.HSVToColor(hsv), Color.WHITE }, null);
    sweepGradient.setLocalMatrix(gradientRotationMatrix);
    valueSliderPaint.setShader(sweepGradient);
    canvas.drawPath(valueSliderPath, valueSliderPaint);
    // drawing color wheel pointer
    float hueAngle = (float) Math.toRadians(colorHSV[0]);
    int colorPointX = (int) (-Math.cos(hueAngle) * colorHSV[1] * colorWheelRadius) + centerX;
    int colorPointY = (int) (-Math.sin(hueAngle) * colorHSV[1] * colorWheelRadius) + centerY;
    float pointerRadius = 0.075f * colorWheelRadius;
    int pointerX = (int) (colorPointX - pointerRadius / 2);
    int pointerY = (int) (colorPointY - pointerRadius / 2);
    colorPointerCoords.set(pointerX, pointerY, pointerX + pointerRadius, pointerY + pointerRadius);
    canvas.drawOval(colorPointerCoords, colorPointerPaint);
    // drawing value pointer
    valuePointerPaint.setColor(Color.HSVToColor(new float[] { 0f, 0f, 1f - colorHSV[2] }));
    double valueAngle = (colorHSV[2] - 0.5f) * Math.PI;
    float valueAngleX = (float) Math.cos(valueAngle);
    float valueAngleY = (float) Math.sin(valueAngle);
    canvas.drawLine(valueAngleX * innerWheelRadius + centerX, valueAngleY * innerWheelRadius + centerY, valueAngleX * outerWheelRadius + centerX, valueAngleY * outerWheelRadius + centerY, valuePointerPaint);
    if (arrowPointerSize > 0) {
        drawPointerArrow(canvas);
    }
}

Example 28 with SweepGradient

use of android.graphics.SweepGradient in project AisenWeiBo by wangdan.

the class ColorPicker method createColorWheelBitmap.

private Bitmap createColorWheelBitmap(int width, int height) {
    Bitmap bitmap = Bitmap.createBitmap(width, height, Config.ARGB_8888);
    int colorCount = 12;
    int colorAngleStep = 360 / 12;
    int[] colors = new int[colorCount + 1];
    float[] hsv = new float[] { 0f, 1f, 1f };
    for (int i = 0; i < colors.length; i++) {
        hsv[0] = (i * colorAngleStep + 180) % 360;
        colors[i] = Color.HSVToColor(hsv);
    }
    colors[colorCount] = colors[0];
    SweepGradient sweepGradient = new SweepGradient(width / 2, height / 2, colors, null);
    RadialGradient radialGradient = new RadialGradient(width / 2, height / 2, colorWheelRadius, 0xFFFFFFFF, 0x00FFFFFF, TileMode.CLAMP);
    ComposeShader composeShader = new ComposeShader(sweepGradient, radialGradient, PorterDuff.Mode.SRC_OVER);
    colorWheelPaint.setShader(composeShader);
    Canvas canvas = new Canvas(bitmap);
    canvas.drawCircle(width / 2, height / 2, colorWheelRadius, colorWheelPaint);
    return bitmap;
}

Example 29 with SweepGradient

use of android.graphics.SweepGradient in project AndroidStudy by tinggengyan.

the class AbCircleProgressBar method onDraw.

/* (non-Javadoc)
     * @see android.view.View#onDraw(android.graphics.Canvas)
     */
@SuppressLint("DrawAllocation")
@Override
protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);
    if (reset) {
        canvas.drawColor(Color.TRANSPARENT);
        reset = false;
    }
    this.width = getMeasuredWidth();
    this.height = getMeasuredHeight();
    this.radius = getMeasuredWidth() / 2 - pathWidth;
    // 设置画笔颜色
    pathPaint.setColor(pathColor);
    // 设置画笔宽度
    pathPaint.setStrokeWidth(pathWidth);
    // 添加浮雕效果
    pathPaint.setMaskFilter(emboss);
    // 在中心的地方画个半径为r的圆
    canvas.drawCircle(this.width / 2, this.height / 2, radius, pathPaint);
    // 边线
    pathPaint.setStrokeWidth(0.5f);
    pathPaint.setColor(pathBorderColor);
    canvas.drawCircle(this.width / 2, this.height / 2, radius + pathWidth / 2 + 0.5f, pathPaint);
    canvas.drawCircle(this.width / 2, this.height / 2, radius - pathWidth / 2 - 0.5f, pathPaint);
    /*int[] gradientColors = new int[3];  
                gradientColors[0] = Color.GREEN;
		gradientColors[1] = Color.YELLOW;  
		gradientColors[2] = Color.RED;  
		float[] gradientPositions = new float[3];  
		gradientPositions[0] = 0.0f;  
		gradientPositions[1] = 0.5f;  
		gradientPositions[2] = 1.0f;  
		
		//按颜色比例圆形填充
		RadialGradient radialGradientShader = new RadialGradient(this.width/2,this.height/2, 
				radius, gradientColors, gradientPositions, TileMode.CLAMP); 
		
		paint1.setShader(radialGradientShader);*/
    // 环形颜色填充
    SweepGradient sweepGradient = new SweepGradient(this.width / 2, this.height / 2, arcColors, null);
    fillArcPaint.setShader(sweepGradient);
    // 设置画笔为白色
    // 模糊效果
    fillArcPaint.setMaskFilter(mBlur);
    // 设置线的类型,边是圆的
    fillArcPaint.setStrokeCap(Paint.Cap.ROUND);
    // fillArcPaint.setColor(Color.BLUE);
    fillArcPaint.setStrokeWidth(pathWidth);
    // 设置类似于左上角坐标，右下角坐标
    oval.set(this.width / 2 - radius, this.height / 2 - radius, this.width / 2 + radius, this.height / 2 + radius);
    // 画圆弧，第二个参数为：起始角度，第三个为跨的角度，第四个为true的时候是实心，false的时候为空心
    canvas.drawArc(oval, -90, ((float) progress / max) * 360, false, fillArcPaint);
}

Example 30 with SweepGradient

use of android.graphics.SweepGradient in project GossipView by jianghejie.

the class GossipView method onMeasure.

@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    int height = getDefaultSize(getSuggestedMinimumHeight(), heightMeasureSpec);
    int width = getDefaultSize(getSuggestedMinimumWidth(), widthMeasureSpec);
    int min = Math.min(width, height);
    mWidth = min;
    outArctrokeWidth = min / 6;
    mInnerArctrokeWidth = outArctrokeWidth / 7;
    mInnerArcPaint.setStrokeWidth(mInnerArctrokeWidth);
    mOuterTextPaint.setTextSize(outArctrokeWidth / 3);
    mOuterArcPaint.setStrokeWidth(outArctrokeWidth);
    mOuterArcRadius = mWidth - outArctrokeWidth / 2 - padding;
    mInnerArcRadius = mWidth / 6;
    mProgressPaint.setStrokeWidth(mInnerArctrokeWidth);
    mSweepGradient = new SweepGradient(getOriginal().x, getOriginal().y, 0xfff39700, Color.WHITE);
    mProgressPaint.setShader(mSweepGradient);
    mOuterArcRectangle.set(outArctrokeWidth / 2 + padding, outArctrokeWidth / 2 + padding, mOuterArcRadius, mOuterArcRadius);
    mInnerArcRectangle.set(mWidth / 2 - mInnerArcRadius, mWidth / 2 - mInnerArcRadius, mWidth / 2 + mInnerArcRadius, mWidth / 2 + mInnerArcRadius);
    mInnerBackGroud.setBounds((int) outArctrokeWidth + padding, (int) outArctrokeWidth + padding, (int) (min - outArctrokeWidth - padding), (int) (min - outArctrokeWidth - padding));
    mOuterBackGroud.setBounds(0, 0, mWidth, mWidth);
    setMeasuredDimension(min, min);
}