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

Example 26 with ColorMatrix

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

the class ImageProcessor method hue.

/**
     * 色相处理
     * @param hueValue 新的色相值
     * @return 改变了色相值之后的图片
     */
public Bitmap hue(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(), 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 27 with ColorMatrix

use of android.graphics.ColorMatrix in project MyDiary by erttyy8821.

the class PageEffectView method init.

private void init(Context context, Calendar calendar) {
    //In the Android 4.2 , LAYER_TYPE_SOFTWARE will cause some question
    int year = YearClass.get(context.getApplicationContext());
    if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.JELLY_BEAN_MR1 || year < 2012) {
        this.setLayerType(View.LAYER_TYPE_SOFTWARE, null);
    }
    //View
    setScreen(context);
    createBitmaps();
    //Set calendar , this object should be created after w,h was set.
    calendarFactory = new CalendarFactory(context, calendar, mWidth, mHeight);
    //Page effect
    mPath0 = new Path();
    mPath1 = new Path();
    createDrawable();
    mPaint = new Paint();
    mPaint.setStyle(Paint.Style.FILL);
    ColorMatrix cm = new ColorMatrix();
    float[] array = { 0.55f, 0, 0, 0, 80.0f, 0, 0.55f, 0, 0, 80.0f, 0, 0, 0.55f, 0, 80.0f, 0, 0, 0, 0.2f, 0 };
    cm.set(array);
    mColorMatrixFilter = new ColorMatrixColorFilter(cm);
    mMatrix = new Matrix();
    mScroller = new Scroller(getContext());
    // 不让x,y为0,否则在点计算时会有问题
    mTouch.x = 0.01f;
    mTouch.y = 0.01f;
    //Set today text
    calendarFactory.onDraw(mCurrentPageCanvas);
}

Example 28 with ColorMatrix

use of android.graphics.ColorMatrix in project boilerplate by koush.

the class TintHelper method setColorFilter.

static void setColorFilter(Drawable drawable, int color) {
    ColorMatrix s = new ColorMatrix();
    s.setScale(1 - Color.red(color) / 255f, 1 - Color.green(color) / 255f, 1 - Color.blue(color) / 255f, 1);
    s.preConcat(colorMatrixNegative);
    s.postConcat(colorMatrixNegative);
    ColorMatrixColorFilter filter = new ColorMatrixColorFilter(s);
    drawable.setColorFilter(filter);
}

Example 29 with ColorMatrix

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

the class BitmapUtil method lum.

/**
     * 亮度处理
     *
     * @param bitmap   原图
     * @param lumValue 新的亮度值
     * @return 改变了亮度值之后的图片
     */
public static Bitmap lum(Bitmap bitmap, 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(), 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 30 with ColorMatrix

use of android.graphics.ColorMatrix in project Launcher3 by chislon.

the class WidgetPreviewLoader method generateShortcutPreview.

private Bitmap generateShortcutPreview(ResolveInfo info, int maxWidth, int maxHeight, Bitmap preview) {
    Bitmap tempBitmap = mCachedShortcutPreviewBitmap.get();
    final Canvas c = mCachedShortcutPreviewCanvas.get();
    if (tempBitmap == null || tempBitmap.getWidth() != maxWidth || tempBitmap.getHeight() != maxHeight) {
        tempBitmap = Bitmap.createBitmap(maxWidth, maxHeight, Config.ARGB_8888);
        mCachedShortcutPreviewBitmap.set(tempBitmap);
    } else {
        c.setBitmap(tempBitmap);
        c.drawColor(0, PorterDuff.Mode.CLEAR);
        c.setBitmap(null);
    }
    // Render the icon
    Drawable icon = mIconCache.getFullResIcon(info);
    int paddingTop = mContext.getResources().getDimensionPixelOffset(R.dimen.shortcut_preview_padding_top);
    int paddingLeft = mContext.getResources().getDimensionPixelOffset(R.dimen.shortcut_preview_padding_left);
    int paddingRight = mContext.getResources().getDimensionPixelOffset(R.dimen.shortcut_preview_padding_right);
    int scaledIconWidth = (maxWidth - paddingLeft - paddingRight);
    renderDrawableToBitmap(icon, tempBitmap, paddingLeft, paddingTop, scaledIconWidth, scaledIconWidth);
    if (preview != null && (preview.getWidth() != maxWidth || preview.getHeight() != maxHeight)) {
        throw new RuntimeException("Improperly sized bitmap passed as argument");
    } else if (preview == null) {
        preview = Bitmap.createBitmap(maxWidth, maxHeight, Config.ARGB_8888);
    }
    c.setBitmap(preview);
    // Draw a desaturated/scaled version of the icon in the background as a watermark
    Paint p = mCachedShortcutPreviewPaint.get();
    if (p == null) {
        p = new Paint();
        ColorMatrix colorMatrix = new ColorMatrix();
        colorMatrix.setSaturation(0);
        p.setColorFilter(new ColorMatrixColorFilter(colorMatrix));
        p.setAlpha((int) (255 * 0.06f));
        mCachedShortcutPreviewPaint.set(p);
    }
    c.drawBitmap(tempBitmap, 0, 0, p);
    c.setBitmap(null);
    renderDrawableToBitmap(icon, preview, 0, 0, mAppIconSize, mAppIconSize);
    return preview;
}