package guo.com;
import android.content.Context;
import android.graphics.Camera;
import android.graphics.Matrix;
import android.util.AttributeSet;
import android.util.Log;
import android.view.View;
import android.view.animation.Transformation;
import android.widget.Gallery;
public class CoverFlow extends Gallery {
// mCamera是用来做类3D效果处理,比如Z轴方向上的平移,绕Y轴的旋转等
private Camera mCamera = new Camera();
// mMaxRotationAngle是图片绕Y轴最大旋转角度,也就是屏幕最边上那两张图片的旋转角度
private int mMaxRotationAngle = 50;
// mMaxZoom是图片在Z轴平移的距离,视觉上看上进心来就是放大缩小的效果
private int mMaxZoom = -200;
private int mCoveflowCenter;
private boolean mAlphaMode = true;
private boolean mCircleMode = false;
public CoverFlow(Context context) {
super(context);
// TODO Auto-generated constructor stub
this.setStaticTransformationsEnabled(true);
}
public CoverFlow(Context context, AttributeSet attrs) {
super(context, attrs);
this.setStaticTransformationsEnabled(true);
}
public CoverFlow(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
this.setStaticTransformationsEnabled(true);
}
public int getMaxRotationAngle() {
return mMaxRotationAngle;
}
public void setMaxRotationAngle(int maxRotationAngle) {
mMaxRotationAngle = maxRotationAngle;
}
public boolean getCircleMode() {
return mCircleMode;
}
public void setCircleMode(boolean isCircle) {
mCircleMode = isCircle;
}
public boolean getAlphaMode() {
return mAlphaMode;
}
public void setAlphaMode(boolean isAlpha) {
mAlphaMode = isAlpha;
}
public int getMaxZoom() {
return mMaxZoom;
}
public void setMaxZoom(int maxZoom) {
mMaxZoom = maxZoom;
}
private int getCenterOfCoverflow() {
return (getWidth() - getPaddingLeft() - getPaddingRight()) / 2
+ getPaddingLeft();
}
// 获取视图中心
private static int getCenterOfView(View view) {
return view.getLeft() + view.getWidth() / 2;
}
// 重写Garray方法 ,产生层叠和放大效果
@Override
protected boolean getChildStaticTransformation(View child, Transformation t) {
// TODO Auto-generated method stub
final int childCenter = getCenterOfView(child);
final int childWidth = child.getWidth();
int rotationAngle = 0;
t.clear();
t.setTransformationType(Transformation.TYPE_MATRIX);
if (childCenter == mCoveflowCenter) {
transformImageBitmap(child, t, 0, 0);
} else {
rotationAngle = (int) (((float) (mCoveflowCenter - childCenter) / childWidth) * mMaxRotationAngle);
// Log.d("test", "recanglenum:"+Math.floor ((mCoveflowCenter -childCenter) / childWidth));
/*
* if (Math.abs(rotationAngle) > mMaxRotationAngle) { rotationAngle
* = (rotationAngle < 0) ? -mMaxRotationAngle : mMaxRotationAngle; }
*/
transformImageBitmap(
child,
t,
rotationAngle,
(int) Math.floor((mCoveflowCenter - childCenter)
/ (childWidth == 0 ? 1 : childWidth)));
}
return true;
}
/**
* This is called during layout when the size of this view has changed. If
* you were just added to the view hierarchy, you're called with the old
* values of 0.
* 这就是所谓的布局过程中,当这个View的大小发生了变化。如果你刚刚添加到视图层次,你所谓的旧值0。
* @param w 这个View的当前宽度。
* @param h 这个View的当前高度。
* @param oldw 这个View的原先宽度。
* @param oldh 这个View的原先高度。
*/
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
mCoveflowCenter = getCenterOfCoverflow();
super.onSizeChanged(w, h, oldw, oldh);
}
/**
* Transform the Image Bitmap by the Angle passed
* 通过角度改变Image Bitmap
* @param imageView
* ImageView the ImageView whose bitmap we want to rotate
* @param t
* transformation
* @param rotationAngle
* the Angle by which to rotate the Bitmap
*/
private void transformImageBitmap(View child, Transformation t,
int rotationAngle, int d) {
mCamera.save();
final Matrix imageMatrix = t.getMatrix();
final int imageHeight = child.getLayoutParams().height;
final int imageWidth = child.getLayoutParams().width;
final int rotation = Math.abs(rotationAngle);
// mCamera.translate(0.0f, 0.0f, 100.0f);
// As the angle of the view gets less, zoom in
// if (rotation <= mMaxRotationAngle) {
float zoomAmount = (float) (-140 + (rotation * 2));
if (rotationAngle < 0) {
mCamera.translate((float) (-rotation * 0.5),
(float) (-rotation * 0.3) + 5, zoomAmount);
} else {
mCamera.translate((float) rotation, (float) (-rotation * 0.3) + 5,
zoomAmount);
}
Log.i("info", "---------------------->" + rotationAngle);
if (mCircleMode) {
if (rotation < 40) {
mCamera.translate(0.0f, 155, 0.0f);
} else {
mCamera.translate(0.0f, (255 - rotation * 2.5f), 0.0f);
}
}
if (mAlphaMode) {
// child.setBackgroundDrawable(getResources().getDrawable(R.drawable.app_bg));
// child.setBackgroundColor(255);
}
// }
// mCamera.rotateY(rotationAngle);
mCamera.getMatrix(imageMatrix);
imageMatrix.preTranslate(-(imageWidth / 2), -(imageHeight / 2));
imageMatrix.postTranslate((imageWidth / 2), (imageHeight / 2));
mCamera.restore();
}
// 重载视图显示顺序让左到中间显示,再到右到中间显示
protected int getChildDrawingOrder(int childCount, int i) {
long t = getSelectedItemId();
int h = getSelectedItemPosition();
if (i < childCount / 2) {
return i;
}
return childCount - i - 1 + childCount / 2;
}
}
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gallery重叠特效源码+注释(实用1).zip (34个子文件)
gallery重叠特效源码+注释(实用1)
项目说明.zip 46KB
Gallery_Demo
Gallery_Demo
.classpath 280B
assets
src
guo
com
Gallery_Repeat_Act.java 2KB
CoverFlow.java 6KB
res
drawable-mdpi
icon.png 3KB
drawable-ldpi
icon.png 2KB
values
strings.xml 191B
layout
main.xml 528B
drawable-hdpi
menu7.png 27KB
menu2.png 27KB
menu6.png 27KB
menu4.png 27KB
menu3.png 26KB
icon.png 4KB
menu1.png 26KB
menu5.png 27KB
bin
resources.ap_ 179KB
guo
com
Gallery_Repeat_Act$ImageAdapter.class 2KB
R$string.class 394B
R$layout.class 361B
R$id.class 352B
CoverFlow.class 5KB
R$attr.class 307B
Gallery_Repeat_Act.class 1KB
R$drawable.class 570B
R.class 454B
Gallery_Demo.apk 186KB
classes.dex 8KB
proguard.cfg 1KB
default.properties 362B
.project 848B
AndroidManifest.xml 679B
gen
guo
com
R.java 1KB
Gallery_Demo.rar 557KB
共 34 条
- 1
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