get Crop Bitmap By RectF - Android Graphics

Android examples for Graphics:Bitmap Crop

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Description

get Crop Bitmap By RectF

Demo Code


//package com.java2s;

import android.graphics.Bitmap;
import android.graphics.Bitmap.Config;

import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Matrix;
import android.graphics.Paint;

import android.graphics.RectF;

public class Main {
    private static Bitmap getCropBitmapByCPU(Bitmap source, RectF cropRectF) {
        Bitmap resultBitmap = Bitmap.createBitmap((int) cropRectF.width(),
                (int) cropRectF.height(), Config.ARGB_8888);
        Canvas cavas = new Canvas(resultBitmap);

        // draw background
        Paint paint = new Paint(Paint.FILTER_BITMAP_FLAG);
        paint.setColor(Color.WHITE);
        cavas.drawRect(//from  w w  w. ja v  a  2s. c  om
                new RectF(0, 0, cropRectF.width(), cropRectF.height()),
                paint);

        Matrix matrix = new Matrix();
        matrix.postTranslate(-cropRectF.left, -cropRectF.top);

        cavas.drawBitmap(source, matrix, paint);

        if (source != null && !source.isRecycled()) {
            source.recycle();
        }

        return resultBitmap;
    }
}

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