import java.io.ByteArrayOutputStream;import java.io.File;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import android.content.Context;import android.graphics.Bitmap;import android.graphics.Bitmap.CompressFormat;import android.graphics.Bitmap.Config;import android.graphics.BitmapFactory;import android.graphics.Canvas;import android.graphics.ColorMatrix;import android.graphics.ColorMatrixColorFilter;import android.graphics.LinearGradient;import android.graphics.Matrix;import android.graphics.Paint;import android.graphics.PorterDuff;import android.graphics.PorterDuff.Mode;import android.graphics.PorterDuffXfermode;import android.graphics.Rect;import android.graphics.RectF;import android.graphics.Shader;import android.graphics.drawable.BitmapDrawable;import android.graphics.drawable.Drawable;/** * 图片工具类 * @author wwj * 2013/7/3 */public class ImageUtil {    /**图片的八个位置**/    public static final int TOP = 0;            //上        public static final int BOTTOM = 1;            //下    public static final int LEFT = 2;            //左    public static final int RIGHT = 3;            //右    public static final int LEFT_TOP = 4;        //左上    public static final int LEFT_BOTTOM = 5;    //左下    public static final int RIGHT_TOP = 6;        //右上    public static final int RIGHT_BOTTOM = 7;    //右下        /**     * 图像的放大缩小方法     * @param src        源位图对象     * @param scaleX    宽度比例系数     * @param scaleY    高度比例系数     * @return 返回位图对象     */    public static Bitmap zoomBitmap(Bitmap src, float scaleX, float scaleY) {        Matrix matrix = new Matrix();        matrix.setScale(scaleX, scaleY);        Bitmap t_bitmap = Bitmap.createBitmap(src, 0, 0, src.getWidth(), src.getHeight(), matrix, true);        return t_bitmap;    }        /**     * 图像放大缩小--根据宽度和高度     * @param src     * @param width     * @param height     * @return     */    public static Bitmap zoomBimtap(Bitmap src, int width, int height) {        return Bitmap.createScaledBitmap(src, width, height, true);    }        /**     * 将Drawable转为Bitmap对象     * @param drawable     * @return     */    public static Bitmap drawableToBitmap(Drawable drawable) {        return ((BitmapDrawable)drawable).getBitmap();    }            /**     * 将Bitmap转换为Drawable对象     * @param bitmap     * @return     */    public static Drawable bitmapToDrawable(Bitmap bitmap) {        Drawable drawable = new BitmapDrawable(bitmap);        return drawable;    }        /**     * Bitmap转byte[]     * @param bitmap     * @return     */    public static byte[] bitmapToByte(Bitmap bitmap) {        ByteArrayOutputStream out = new ByteArrayOutputStream();        bitmap.compress(Bitmap.CompressFormat.PNG, 100, out);        return out.toByteArray();    }        /**     * byte[]转Bitmap     * @param data     * @return     */    public static Bitmap byteToBitmap(byte[] data) {        if(data.length != 0) {            return BitmapFactory.decodeByteArray(data, 0, data.length);        }        return null;    }        /**     * 绘制带圆角的图像     * @param src     * @param radius     * @return     */    public static Bitmap createRoundedCornerBitmap(Bitmap src, int radius) {        final int w = src.getWidth();        final int h = src.getHeight();        // 高清量32位图        Bitmap bitmap = Bitmap.createBitmap(w, h, Config.ARGB_8888);        Paint paint = new Paint();        Canvas canvas = new Canvas(bitmap);        canvas.drawARGB(0, 0, 0, 0);        paint.setColor(0xff424242);        // 防止边缘的锯齿        paint.setFilterBitmap(true);        Rect rect = new Rect(0, 0, w, h);        RectF rectf = new RectF(rect);        // 绘制带圆角的矩形        canvas.drawRoundRect(rectf, radius, radius, paint);                // 取两层绘制交集，显示上层        paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));        // 绘制图像        canvas.drawBitmap(src, rect, rect, paint);        return bitmap;    }        /**     * 创建选中带提示图片     * @param context     * @param srcId     * @param tipId     * @return     */    public static Drawable createSelectedTip(Context context, int srcId, int tipId) {        Bitmap src = BitmapFactory.decodeResource(context.getResources(), srcId);        Bitmap tip = BitmapFactory.decodeResource(context.getResources(), tipId);        final int w = src.getWidth();        final int h = src.getHeight();        Bitmap bitmap = Bitmap.createBitmap(w, h, Config.ARGB_8888);        Paint paint = new Paint();        Canvas canvas = new Canvas(bitmap);        //绘制原图        canvas.drawBitmap(src, 0, 0, paint);        //绘制提示图片        canvas.drawBitmap(tip, (w - tip.getWidth()), 0, paint);        return bitmapToDrawable(bitmap);    }        /**     * 带倒影的图像     * @param src     * @return     */    public static Bitmap createReflectionBitmap(Bitmap src) {        // 两个图像间的空隙        final int spacing = 4;        final int w = src.getWidth();        final int h = src.getHeight();        // 绘制高质量32位图        Bitmap bitmap = Bitmap.createBitmap(w, h + h / 2 + spacing, Config.ARGB_8888);        // 创建燕X轴的倒影图像        Matrix m = new Matrix();        m.setScale(1, -1);        Bitmap t_bitmap = Bitmap.createBitmap(src, 0, h / 2, w, h / 2, m, true);                Canvas canvas = new Canvas(bitmap);        Paint paint = new Paint();        //    绘制原图像        canvas.drawBitmap(src, 0, 0, paint);        // 绘制倒影图像        canvas.drawBitmap(t_bitmap, 0, h + spacing, paint);        // 线性渲染-沿Y轴高到低渲染        Shader shader = new LinearGradient(0, h + spacing, 0, h + spacing + h / 2, 0x70ffffff, 0x00ffffff, Shader.TileMode.MIRROR);        paint.setShader(shader);        // 取两层绘制交集，显示下层。        paint.setXfermode(new PorterDuffXfermode(Mode.DST_IN));        // 绘制渲染倒影的矩形        canvas.drawRect(0, h + spacing, w, h + h / 2 + spacing, paint);        return bitmap;    }            /**     * 独立的倒影图像     * @param src     * @return     */    public static Bitmap createReflectionBitmapForSingle(Bitmap src) {        final int w = src.getWidth();        final int h = src.getHeight();        // 绘制高质量32位图        Bitmap bitmap = Bitmap.createBitmap(w, h / 2, Config.ARGB_8888);        // 创建沿X轴的倒影图像        Matrix m = new Matrix();        m.setScale(1, -1);        Bitmap t_bitmap = Bitmap.createBitmap(src, 0, h / 2, w, h / 2, m, true);        Canvas canvas = new Canvas(bitmap);        Paint paint = new Paint();        // 绘制倒影图像        canvas.drawBitmap(t_bitmap, 0, 0, paint);        // 线性渲染-沿Y轴高到低渲染            Shader shader = new LinearGradient(0, 0, 0, h / 2, 0x70ffffff,                0x00ffffff, Shader.TileMode.MIRROR);        paint.setShader(shader);        // 取两层绘制交集。显示下层。        paint.setXfermode(new PorterDuffXfermode(Mode.DST_IN));        // 绘制渲染倒影的矩形        canvas.drawRect(0, 0, w, h / 2, paint);        return bitmap;    }            public static Bitmap createGreyBitmap(Bitmap src) {        final int w = src.getWidth();        final int h = src.getHeight();        Bitmap bitmap = Bitmap.createBitmap(w, h, Config.ARGB_8888);        Canvas canvas = new Canvas(bitmap);        Paint paint = new Paint();        // 颜色变换的矩阵        ColorMatrix matrix = new ColorMatrix();        // saturation 饱和度值，最小可设为0，此时对应的是灰度图；为1表示饱和度不变，设置大于1，就显示过饱和        matrix.setSaturation(0);        ColorMatrixColorFilter filter = new ColorMatrixColorFilter(matrix);        paint.setColorFilter(filter);        canvas.drawBitmap(src, 0, 0, paint);        return bitmap;    }        /**     * 保存图片     * @param src     * @param filepath     * @param format:[Bitmap.CompressFormat.PNG,Bitmap.CompressFormat.JPEG]     * @return     */    public static boolean saveImage(Bitmap src, String filepath, CompressFormat format) {        boolean rs = false;        File file = new File(filepath);        try {            FileOutputStream out = new FileOutputStream(file);            if(src.compress(format, 100, out)) {                out.flush();    //写入流            }            out.close();        } catch (FileNotFoundException e) {            e.printStackTrace();        } catch (IOException e) {            e.printStackTrace();        }        return rs;    }        /**     * 添加水印效果     * @param src        源位图     * @param watermark    水印     * @param direction    方向     * @param spacing 间距     * @return     */    public static Bitmap createWatermark(Bitmap src, Bitmap watermark, int direction, int spacing) {        final int w = src.getWidth();        final int h = src.getHeight();        Bitmap bitmap = Bitmap.createBitmap(w, h, Config.ARGB_8888);        Canvas canvas = new Canvas(bitmap);        canvas.drawBitmap(src, 0, 0, null);        if(direction == LEFT_TOP) {            canvas.drawBitmap(watermark, spacing, spacing, null);        } else if(direction == LEFT_BOTTOM){            canvas.drawBitmap(watermark, spacing, h - watermark.getHeight() - spacing, null);        } else if(direction == RIGHT_TOP) {            canvas.drawBitmap(watermark, w - watermark.getWidth() - spacing, spacing, null);        } else if(direction == RIGHT_BOTTOM) {            canvas.drawBitmap(watermark, w - watermark.getWidth() - spacing, h - watermark.getHeight() - spacing, null);        }        return bitmap;    }            /**     * 合成图像     * @param direction     * @param bitmaps     * @return     */    public static Bitmap composeBitmap(int direction, Bitmap... bitmaps) {        if(bitmaps.length < 2) {            return null;        }        Bitmap firstBitmap = bitmaps[0];        for (int i = 0; i < bitmaps.length; i++) {            firstBitmap = composeBitmap(firstBitmap, bitmaps[i], direction);        }        return firstBitmap;    }    /**     * 合成两张图像     * @param firstBitmap     * @param secondBitmap     * @param direction     * @return     */    private static Bitmap composeBitmap(Bitmap firstBitmap, Bitmap secondBitmap,            int direction) {        if(firstBitmap == null) {            return null;        }        if(secondBitmap == null) {            return firstBitmap;        }        final int fw = firstBitmap.getWidth();        final int fh = firstBitmap.getHeight();        final int sw = secondBitmap.getWidth();        final int sh = secondBitmap.getHeight();        Bitmap bitmap = null;        Canvas canvas = null;        if(direction == TOP) {            bitmap = Bitmap.createBitmap(sw > fw ? sw : fw, fh + sh, Config.ARGB_8888);            canvas = new Canvas(bitmap);            canvas.drawBitmap(secondBitmap, 0, 0, null);            canvas.drawBitmap(firstBitmap, 0, sh, null);        } else if(direction == BOTTOM) {            bitmap = Bitmap.createBitmap(fw > sw ? fw : sw, fh + sh, Config.ARGB_8888);            canvas = new Canvas(bitmap);            canvas.drawBitmap(firstBitmap, 0, 0, null);            canvas.drawBitmap(secondBitmap, 0, fh, null);        } else if(direction == LEFT) {            bitmap = Bitmap.createBitmap(fw + sw, sh > fh ? sh : fh, Config.ARGB_8888);            canvas = new Canvas(bitmap);            canvas.drawBitmap(secondBitmap, 0, 0, null);            canvas.drawBitmap(firstBitmap, sw, 0, null);        } else if(direction == RIGHT) {            bitmap = Bitmap.createBitmap(fw + sw, fh > sh ? fh : sh,                    Config.ARGB_8888);            canvas = new Canvas(bitmap);            canvas.drawBitmap(firstBitmap, 0, 0, null);            canvas.drawBitmap(secondBitmap, fw, 0, null);        }        return bitmap;    }        }