android.graphics.Shader.TileMode#REPEAT源码实例Demo

private static TileMode parseTileMode(int tileMode) {
    switch (tileMode) {
        case 0:
            return TileMode.CLAMP;
        case 1:
            return TileMode.REPEAT;
        case 2:
            return TileMode.MIRROR;
        default:
            return null;
    }
}
 

public ColorPickerView(final Context context, final AttributeSet attrs, final int defStyleAttr) {
		super(context, attrs, defStyleAttr);
//		if (DEBUG) Log.v(TAG, "ColorPickerView:");
		DENSITY = context.getResources().getDisplayMetrics().density;
		RECTANGLE_TRACKER_OFFSET = RECTANGLE_TRACKER_OFFSET_DP * DENSITY;
		SELECTED_RADIUS = DEFAULT_SELECTED_RADIUS * DENSITY;

		mAlphaShader = new BitmapShader(BitmapHelper.makeCheckBitmap(), TileMode.REPEAT, TileMode.REPEAT);
		mAlphaDrawable = new ShaderDrawable(Paint.FILTER_BITMAP_FLAG | Paint.DITHER_FLAG, 0);
		mAlphaDrawable.setShader(mAlphaShader);

		radius = 0;
		internalSetColor(mColor, false);

		// 色相円用
		setHueColorArray(mAlpha, COLORS);
		mPaint.setShader(new SweepGradient(0, 0, COLORS, null));
		mPaint.setStyle(Paint.Style.FILL);
		mPaint.setStrokeWidth(0);

		// 選択色用
		mSelectionPaint.setColor(mColor);
		mSelectionPaint.setStrokeWidth(5);

		// スライダーのトラッカー表示用
		mTrackerPaint.setColor(TRACKER_COLOR);
		mTrackerPaint.setStyle(Paint.Style.STROKE);
		mTrackerPaint.setStrokeWidth(2f * DENSITY);
		mTrackerPaint.setAntiAlias(true);
	}