create Reflection Bitmap Image With Origin - Android Graphics

Android examples for Graphics:Bitmap Reflection

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Description

create Reflection Bitmap Image With Origin

Demo Code


//package com.java2s;

import android.graphics.Bitmap;

import android.graphics.Bitmap.Config;

import android.graphics.Canvas;

import android.graphics.LinearGradient;
import android.graphics.Matrix;
import android.graphics.Paint;

import android.graphics.PorterDuff.Mode;
import android.graphics.PorterDuffXfermode;

import android.graphics.Shader.TileMode;

public class Main {

    public static Bitmap createReflectionImageWithOrigin(Bitmap bitmap) {
        if (bitmap == null) {
            return null;
        }//from ww w . ja  v a2s  . c  o m

        final int reflectionGap = 4;

        int width = bitmap.getWidth();
        int height = bitmap.getHeight();

        Matrix matrix = new Matrix();

        matrix.preScale(1, -1);

        Bitmap reflectionImage = Bitmap.createBitmap(bitmap, 0, height / 2,
                width, height / 2, matrix, false);

        Bitmap bitmapWithReflection = Bitmap.createBitmap(width,
                (height + height / 2), Config.ARGB_8888);

        Canvas canvas = new Canvas(bitmapWithReflection);

        canvas.drawBitmap(bitmap, 0, 0, null);

        Paint deafalutPaint = new Paint();

        canvas.drawRect(0, height, width, height + reflectionGap,
                deafalutPaint);

        canvas.drawBitmap(reflectionImage, 0, height + reflectionGap, null);

        Paint paint = new Paint();

        LinearGradient shader = new LinearGradient(0, bitmap.getHeight(),
                0, bitmapWithReflection.getHeight() + reflectionGap,
                0x70ffffff, 0x00ffffff, TileMode.CLAMP);

        paint.setShader(shader);

        // Set the Transfer mode to be porter duff and destination in
        paint.setXfermode(new PorterDuffXfermode(Mode.DST_IN));

        // Draw a rectangle using the paint with our linear gradient
        canvas.drawRect(0, height, width, bitmapWithReflection.getHeight()
                + reflectionGap, paint);

        return bitmapWithReflection;
    }
}

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