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

Example 36 with Paint

use of android.graphics.Paint in project Lazy by l123456789jy.

the class ImageProcessor method saturation.

/**
     * 饱和度处理
     * @param saturationValue 新的饱和度值
     * @return 改变了饱和度值之后的图片
     */
public Bitmap saturation(int saturationValue) {
    //计算出符合要求的饱和度值
    float newSaturationValue = saturationValue * 1.0F / 127;
    //创建一个颜色矩阵
    ColorMatrix saturationColorMatrix = new ColorMatrix();
    //设置饱和度值
    saturationColorMatrix.setSaturation(newSaturationValue);
    //创建一个画笔并设置其颜色过滤器
    Paint paint = new Paint();
    paint.setColorFilter(new ColorMatrixColorFilter(saturationColorMatrix));
    //创建一个新的图片并创建画布
    Bitmap newBitmap = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(newBitmap);
    //将原图使用给定的画笔画到画布上
    canvas.drawBitmap(bitmap, 0, 0, paint);
    return newBitmap;
}

Example 37 with Paint

use of android.graphics.Paint in project Lazy by l123456789jy.

the class ImageProcessor method lum.

/**
     * 亮度处理
     * @param lumValue 新的亮度值
     * @return 改变了亮度值之后的图片
     */
public Bitmap lum(int lumValue) {
    //计算出符合要求的亮度值
    float newlumValue = lumValue * 1.0F / 127;
    //创建一个颜色矩阵
    ColorMatrix lumColorMatrix = new ColorMatrix();
    //设置亮度值
    lumColorMatrix.setScale(newlumValue, newlumValue, newlumValue, 1);
    //创建一个画笔并设置其颜色过滤器
    Paint paint = new Paint();
    paint.setColorFilter(new ColorMatrixColorFilter(lumColorMatrix));
    //创建一个新的图片并创建画布
    Bitmap newBitmap = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(newBitmap);
    //将原图使用给定的画笔画到画布上
    canvas.drawBitmap(bitmap, 0, 0, paint);
    return newBitmap;
}

Example 38 with Paint

use of android.graphics.Paint in project Lazy by l123456789jy.

the class BitmapUtil method hue.

/**
     * 色相处理
     *
     * @param bitmap   原图
     * @param hueValue 新的色相值
     * @return 改变了色相值之后的图片
     */
public static Bitmap hue(Bitmap bitmap, int hueValue) {
    // 计算出符合要求的色相值
    float newHueValue = (hueValue - 127) * 1.0F / 127 * 180;
    // 创建一个颜色矩阵
    ColorMatrix hueColorMatrix = new ColorMatrix();
    // 控制让红色区在色轮上旋转的角度
    hueColorMatrix.setRotate(0, newHueValue);
    // 控制让绿红色区在色轮上旋转的角度
    hueColorMatrix.setRotate(1, newHueValue);
    // 控制让蓝色区在色轮上旋转的角度
    hueColorMatrix.setRotate(2, newHueValue);
    // 创建一个画笔并设置其颜色过滤器
    Paint paint = new Paint();
    paint.setColorFilter(new ColorMatrixColorFilter(hueColorMatrix));
    // 创建一个新的图片并创建画布
    Bitmap newBitmap = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Config.ARGB_8888);
    Canvas canvas = new Canvas(newBitmap);
    // 将原图使用给定的画笔画到画布上
    canvas.drawBitmap(bitmap, 0, 0, paint);
    return newBitmap;
}

Example 39 with Paint

use of android.graphics.Paint in project enroscar by stanfy.

the class ShadowDecorator method processBitmap.

@Override
protected Bitmap processBitmap(final Bitmap source, final Canvas sourceCanvas) {
    final Bitmap buffer = this.bitmap;
    final Canvas bufferCanvas = this.bitmapCanvas;
    final Paint shadowPaint = this.shadowPaint;
    buffer.eraseColor(0);
    final float size = this.size;
    shadowPaint.setShadowLayer(blur, size, size, Color.BLACK);
    bufferCanvas.drawRect(dst, shadowPaint);
    bufferCanvas.drawBitmap(source, src, dst, null);
    source.eraseColor(0);
    sourceCanvas.drawBitmap(buffer, 0, 0, null);
    return source;
}

Example 40 with Paint

use of android.graphics.Paint in project WaveLoadingView by tangqi92.

the class WaveLoadingView method updateWaveShader.

private void updateWaveShader() {
    // http://stackoverflow.com/questions/17605662/illegalargumentexception-width-and-height-must-be-0-while-loading-bitmap-from
    if (bitmapBuffer == null || haveBoundsChanged()) {
        if (bitmapBuffer != null)
            bitmapBuffer.recycle();
        int width = getMeasuredWidth();
        int height = getMeasuredHeight();
        if (width > 0 && height > 0) {
            double defaultAngularFrequency = 2.0f * Math.PI / DEFAULT_WAVE_LENGTH_RATIO / width;
            float defaultAmplitude = height * DEFAULT_AMPLITUDE_RATIO;
            mDefaultWaterLevel = height * DEFAULT_WATER_LEVEL_RATIO;
            float defaultWaveLength = width;
            Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
            Canvas canvas = new Canvas(bitmap);
            Paint wavePaint = new Paint();
            wavePaint.setStrokeWidth(2);
            wavePaint.setAntiAlias(true);
            // Draw default waves into the bitmap.
            // y=Asin(ωx+φ)+h
            final int endX = width + 1;
            final int endY = height + 1;
            float[] waveY = new float[endX];
            wavePaint.setColor(adjustAlpha(mWaveColor, 0.3f));
            for (int beginX = 0; beginX < endX; beginX++) {
                double wx = beginX * defaultAngularFrequency;
                float beginY = (float) (mDefaultWaterLevel + defaultAmplitude * Math.sin(wx));
                canvas.drawLine(beginX, beginY, beginX, endY, wavePaint);
                waveY[beginX] = beginY;
            }
            wavePaint.setColor(mWaveColor);
            final int wave2Shift = (int) (defaultWaveLength / 4);
            for (int beginX = 0; beginX < endX; beginX++) {
                canvas.drawLine(beginX, waveY[(beginX + wave2Shift) % endX], beginX, endY, wavePaint);
            }
            // Use the bitamp to create the shader.
            mWaveShader = new BitmapShader(bitmap, Shader.TileMode.REPEAT, Shader.TileMode.CLAMP);
            this.mWavePaint.setShader(mWaveShader);
        }
    }
}