镜像特效

【最终效果】



 

1.相簿显示

在相簿显示中，我们不在使所有图像在同一水平线上了，对两侧的图片进行了一定过得角度旋转以及远小近大的处理

【MyMirrorGalley.java】

 

package com.example.jingxiang;

import android.content.Context;
import android.graphics.Camera;
import android.graphics.Matrix;
import android.util.AttributeSet;
import android.view.View;
import android.view.animation.Transformation;
import android.widget.Gallery;
import android.widget.ImageView;

public class MyMirrorGallery extends Gallery {
private Camera mCamera = new Camera();
private int mMaxRotationAngle = 60;// y轴旋转角度
private int mMaxZoom = -380;// z轴平移距离
private int mCoveflowCenter;
private boolean mAlphaMode = true;
private boolean mCircleMode = false;

public int getMaxRotationAngle() { // 1
return mMaxRotationAngle;
}

// 构造函数
public MyMirrorGallery(Context context) {
super(context);
this.setStaticTransformationsEnabled(true);
}

public MyMirrorGallery(Context context, AttributeSet attrs) {
super(context, attrs);
this.setStaticTransformationsEnabled(true);
}

public MyMirrorGallery(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
this.setStaticTransformationsEnabled(true);
}

public void setMaxRotationAngle(int mMaxRotationAngle) {
this.mMaxRotationAngle = mMaxRotationAngle;
}

public int getMaxZoon() { // 2
return mMaxRotationAngle;
}

public void setMaxZoon(int mMaxZoon) {
this.mMaxZoom = mMaxZoon;
}

public int getCenterOfCoverflow() {
return (getWidth() - getPaddingLeft() - getPaddingRight()) / 2
+ getPaddingLeft();
}

public void getAlphaMode(boolean mAlphaMode) {// 4
this.mAlphaMode = mAlphaMode;
}

public boolean setAlphaMode() {
return mAlphaMode;
}

public boolean getCircleMode() { // 5
return mCircleMode;
}

public void setCircleMode(boolean mCircleMode) {
this.mCircleMode = mCircleMode;
}

// 得到子对象的中线
private static int getCenterOfView(View view) {
return view.getLeft() + view.getWidth() / 2;
}

protected boolean getChildStaticTransformation(View view, Transformation t) {
final int mCenter = getCenterOfView(view);
final int mWidth = view.getWidth();
int rotationAngle = 0;
t.clear();
t.setTransformationType(Transformation.TYPE_MATRIX);
if (mWidth == mCoveflowCenter) {
/* 中间的图 */
transformationImageBitmap((ImageView) view, t, 0); // bitmap:位图
} else {
rotationAngle = (int) ((float) (mCoveflowCenter - mCenter) / mCenter)
* mMaxRotationAngle;
if (Math.abs(rotationAngle) > mMaxRotationAngle) {
rotationAngle = (rotationAngle < 0) ? -mMaxRotationAngle
: mMaxRotationAngle;
}
/* 不是中间的图 */
transformationImageBitmap((ImageView) view, t, rotationAngle);
}
return true;
}

protected void onSizeChanged(int w, int h, int oldw, int oldh) {
mCoveflowCenter = getCenterOfCoverflow();
super.onSizeChanged(w, h, oldw, oldh);
}

private void transformationImageBitmap(ImageView view, Transformation t,
int rotationAngle) {
// TODO Auto-generated method stub
mCamera.save();
final Matrix imageMatrix = t.getMatrix();              // matrix:矩阵
final int imageHeight = view.getLayoutParams().height;// param:参数
final int imageWidth = view.getLayoutParams().width;
final int rotation = Math.abs(rotationAngle);        // rotation:旋转
mCamera.translate(0.0f, 0.0f, 100.0f);
if (rotationAngle <= mMaxRotationAngle) {
float zoomAmout = (float) (mMaxZoom + (rotation * 1.5));// zoom:距离
mCamera.translate(0.0f, 0.0f, zoomAmout);
if (mCircleMode) {
if (rotation < 40) {
mCamera.translate(0.0f, 155, 0.0f);
} else {
mCamera.translate(0.0f, (255 - rotation * 2.5f), 0.0f);
}
}
mCamera.rotateY(rotationAngle);
mCamera.getMatrix(imageMatrix);
imageMatrix.preTranslate(-(imageWidth) / 2, -(imageHeight) / 2);
imageMatrix.postTranslate((imageWidth / 2), (imageHeight) / 2);
mCamera.restore();     // restory:备份		}
}

}

2.镜像效果

现在我们已经是正向显示有了立体效果，接下来，我们实现镜面的效果

【MyImage1.java】

package com.example.jingxiang;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Bitmap.Config;
import android.graphics.BitmapFactory;
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;
import android.graphics.drawable.BitmapDrawable;
import android.util.AttributeSet;
import android.widget.ImageView;

public class MyImage1 extends ImageView {
private boolean mReflectionMode = true;

public MyImage1(Context context) {
super(context);
}

public MyImage1(Context context, AttributeSet attrs) {
super(context, attrs);
// 取得原始图片的bitmap并重画
Bitmap originalImage = ((BitmapDrawable) this.getDrawable())
.getBitmap();
DoReflection(originalImage);
}

public MyImage1(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
Bitmap originalImage = ((BitmapDrawable) this.getDrawable())
.getBitmap();
DoReflection(originalImage);
}
//这个方法很重要，不然显示不了倒影
public void setImageResource(int resId) {
Bitmap originalImage = BitmapFactory.decodeResource(getResources(),
resId);
DoReflection(originalImage);
// super.setImageResource(resId);
}

private void DoReflection(Bitmap originalImage) {
// TODO Auto-generated method stub
final int reflectionGap = 4;
int width = originalImage.getWidth();
int height = originalImage.getHeight();
Matrix matrix = new Matrix();// 矩阵
matrix.preScale(1, -1);
// 创建一个新的bitmap，高度为原来的两倍，其中填充原图和倒影
Bitmap reflectionImage = Bitmap.createBitmap(originalImage, 0, 0,
width, (height / 4) * 3, matrix, false);
Bitmap bitmapWithReflection = Bitmap.createBitmap(width,
(height + height), Config.ARGB_8888);// config:配置
Canvas canvasRef = new Canvas(bitmapWithReflection);// canvas:帆布
// 先画原始图片
canvasRef.drawBitmap(originalImage, 0, 0, null);
// 画间距——画矩形 drawRect (float left, float top, float right, float bottom,
// Paint paint)
Paint deafaultPaint = new Paint();
canvasRef.drawRect(0, height, width, height + reflectionGap,
deafaultPaint);// rect:矩形
// 画翻转以后的图片drawBitmap (Bitmap bitmap, float left, float top, Paint
// paint)
canvasRef.drawBitmap(reflectionImage, 0, height + reflectionGap, null);
Paint paint = new Paint();
// 画阴影LinearGradient (float x0, float y0, float x1, float y1, int
// color0, int color1, Shader.TileMode tile)
LinearGradient shader = new LinearGradient(0,
originalImage.getHeight(), 0, bitmapWithReflection.getHeight()
+ reflectionGap, 0x80ffffff, 0x00ffffff, TileMode.CLAMP);// gradient:高度，坡度
paint.setShader(shader);
paint.setXfermode(new PorterDuffXfermode(Mode.DST_IN));
canvasRef.drawRect(0, height, width, bitmapWithReflection.getHeight()
+ reflectionGap, paint);
this.setImageBitmap(bitmapWithReflection);
}

}

3.显示图片

【MyImage.java】

package com.example.jingxiang;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Bitmap.Config;
import android.graphics.BitmapFactory;
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;
import android.graphics.drawable.BitmapDrawable;
import android.util.AttributeSet;
import android.widget.ImageView;

public class MyImage1 extends ImageView {
private boolean mReflectionMode = true;

public MyImage1(Context context) {
super(context);
}

public MyImage1(Context context, AttributeSet attrs) {
super(context, attrs);
// 取得原始图片的bitmap并重画
Bitmap originalImage = ((BitmapDrawable) this.getDrawable())
.getBitmap();
DoReflection(originalImage);
}

public MyImage1(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
Bitmap originalImage = ((BitmapDrawable) this.getDrawable())
.getBitmap();
DoReflection(originalImage);
}
//这个方法很重要，不然显示不了倒影
public void setImageResource(int resId) {
Bitmap originalImage = BitmapFactory.decodeResource(getResources(),
resId);
DoReflection(originalImage);
// super.setImageResource(resId);
}

private void DoReflection(Bitmap originalImage) {
// TODO Auto-generated method stub
final int reflectionGap = 4;
int width = originalImage.getWidth();
int height = originalImage.getHeight();
Matrix matrix = new Matrix();// 矩阵
matrix.preScale(1, -1);
// 创建一个新的bitmap，高度为原来的两倍，其中填充原图和倒影
Bitmap reflectionImage = Bitmap.createBitmap(originalImage, 0, 0,
width, (height / 4) * 3, matrix, false);
Bitmap bitmapWithReflection = Bitmap.createBitmap(width,
(height + height), Config.ARGB_8888);// config:配置
Canvas canvasRef = new Canva
ae2f
s(bitmapWithReflection);// canvas:帆布
// 先画原始图片
canvasRef.drawBitmap(originalImage, 0, 0, null);
// 画间距——画矩形 drawRect (float left, float top, float right, float bottom,
// Paint paint)
Paint deafaultPaint = new Paint();
canvasRef.drawRect(0, height, width, height + reflectionGap,
deafaultPaint);// rect:矩形
// 画翻转以后的图片drawBitmap (Bitmap bitmap, float left, float top, Paint
// paint)
canvasRef.drawBitmap(reflectionImage, 0, height + reflectionGap, null);
Paint paint = new Paint();
// 画阴影LinearGradient (float x0, float y0, float x1, float y1, int
// color0, int color1, Shader.TileMode tile)
LinearGradient shader = new LinearGradient(0,
originalImage.getHeight(), 0, bitmapWithReflection.getHeight()
+ reflectionGap, 0x80ffffff, 0x00ffffff, TileMode.CLAMP);// gradient:高度，坡度
paint.setShader(shader);
paint.setXfermode(new PorterDuffXfermode(Mode.DST_IN));
canvasRef.drawRect(0, height, width, bitmapWithReflection.getHeight()
+ reflectionGap, paint);
this.setImageBitmap(bitmapWithReflection);
}

}

4.适配器

【MyAdapter.java】

package com.example.jingxiang;

import android.content.Context;
import android.graphics.drawable.BitmapDrawable;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;

public class MyAdapter extends BaseAdapter{
private Context mContext;
private Integer[] Imgid = { R.drawable.p1, R.drawable.p2, R.drawable.p3,
R.drawable.p4, R.drawable.p5 };
public MyAdapter(Context c) {
mContext = c;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return Imgid.length;
}

@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return position;
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
@SuppressWarnings("deprecation")
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
MyImage1 image=new MyImage1(mContext);
image.setImageResource(Imgid[position]);
//设置图像大小
image.setLayoutParams(new MyMirrorGallery.LayoutParams(160,240));
//设置图像显示的模式
image.setScaleType(ImageView.ScaleType.CENTER_INSIDE);
//设置抗锯齿
BitmapDrawable drawable=(BitmapDrawable)image.getDrawable();
drawable.setAntiAlias(true);//alias:别名
return image;
}
public float getScale(boolean focused, int offset) {
return Math.max(0, 1.0f / (float) Math.pow(2, Math.abs(offset)));
}
}

 

5.布局文件

【activity_main.xml】

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >

<com.example.jingxiang.MyMirrorGallery
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/Mygallery"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />

</RelativeLayout>