毕业设计源码-基于android的母婴商城app系统

/******************************************************************************* * Copyright 2011, 2012 Chris Banes. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. *******************************************************************************/ package com.clientBase.photo; import static android.view.MotionEvent.ACTION_CANCEL; import static android.view.MotionEvent.ACTION_DOWN; import static android.view.MotionEvent.ACTION_UP; import java.lang.ref.WeakReference; import android.content.Context; import android.graphics.Bitmap; import android.graphics.Matrix; import android.graphics.Matrix.ScaleToFit; import android.graphics.RectF; import android.graphics.drawable.Drawable; import android.util.Log; import android.view.GestureDetector; import android.view.MotionEvent; import android.view.View; import android.view.View.OnLongClickListener; import android.view.ViewParent; import android.view.ViewTreeObserver; import android.view.animation.AccelerateDecelerateInterpolator; import android.view.animation.Interpolator; import android.widget.ImageView; import android.widget.ImageView.ScaleType; import com.clientBase.photo.log.LogManager; public class PhotoViewAttacher implements IPhotoView, View.OnTouchListener, OnGestureListener, ViewTreeObserver.OnGlobalLayoutListener { private static final String LOG_TAG = "PhotoViewAttacher"; // let debug flag be dynamic, but still Proguard can be used to remove from // release builds private static final boolean DEBUG = Log.isLoggable(LOG_TAG, Log.DEBUG); static final Interpolator sInterpolator = new AccelerateDecelerateInterpolator(); int ZOOM_DURATION = DEFAULT_ZOOM_DURATION; static final int EDGE_NONE = -1; static final int EDGE_LEFT = 0; static final int EDGE_RIGHT = 1; static final int EDGE_BOTH = 2; private float mMinScale = DEFAULT_MIN_SCALE; private float mMidScale = DEFAULT_MID_SCALE; private float mMaxScale = DEFAULT_MAX_SCALE; private boolean mAllowParentInterceptOnEdge = true; private static void checkZoomLevels(float minZoom, float midZoom, float maxZoom) { if (minZoom >= midZoom) { throw new IllegalArgumentException( "MinZoom has to be less than MidZoom"); } else if (midZoom >= maxZoom) { throw new IllegalArgumentException( "MidZoom has to be less than MaxZoom"); } } /** * @return true if the ImageView exists, and it's Drawable existss */ private static boolean hasDrawable(ImageView imageView) { return null != imageView && null != imageView.getDrawable(); } /** * @return true if the ScaleType is supported. */ private static boolean isSupportedScaleType(final ScaleType scaleType) { if (null == scaleType) { return false; } switch (scaleType) { case MATRIX: throw new IllegalArgumentException(scaleType.name() + " is not supported in PhotoView"); default: return true; } } /** * Set's the ImageView's ScaleType to Matrix. */ private static void setImageViewScaleTypeMatrix(ImageView imageView) { /** * PhotoView sets it's own ScaleType to Matrix, then diverts all calls * setScaleType to this.setScaleType automatically. */ if (null != imageView && !(imageView instanceof IPhotoView)) { if (!ScaleType.MATRIX.equals(imageView.getScaleType())) { imageView.setScaleType(ScaleType.MATRIX); } } } private WeakReference<ImageView> mImageView; // Gesture Detectors private GestureDetector mGestureDetector; private com.clientBase.photo.GestureDetector mScaleDragDetector; // These are set so we don't keep allocating them on the heap private final Matrix mBaseMatrix = new Matrix(); private final Matrix mDrawMatrix = new Matrix(); private final Matrix mSuppMatrix = new Matrix(); private final RectF mDisplayRect = new RectF(); private final float[] mMatrixValues = new float[9]; // Listeners private OnMatrixChangedListener mMatrixChangeListener; private OnPhotoTapListener mPhotoTapListener; private OnViewTapListener mViewTapListener; private OnLongClickListener mLongClickListener; private int mIvTop, mIvRight, mIvBottom, mIvLeft; private FlingRunnable mCurrentFlingRunnable; private int mScrollEdge = EDGE_BOTH; private boolean mZoomEnabled; private ScaleType mScaleType = ScaleType.FIT_CENTER; public PhotoViewAttacher(ImageView imageView) { mImageView = new WeakReference<ImageView>(imageView); imageView.setDrawingCacheEnabled(true); imageView.setOnTouchListener(this); ViewTreeObserver observer = imageView.getViewTreeObserver(); if (null != observer) observer.addOnGlobalLayoutListener(this); // Make sure we using MATRIX Scale Type setImageViewScaleTypeMatrix(imageView); if (imageView.isInEditMode()) { return; } // Create Gesture Detectors... mScaleDragDetector = VersionedGestureDetector.newInstance( imageView.getContext(), this); mGestureDetector = new GestureDetector(imageView.getContext(), new GestureDetector.SimpleOnGestureListener() { // forward long click listener @Override public void onLongPress(MotionEvent e) { if (null != mLongClickListener) { mLongClickListener.onLongClick(getImageView()); } } }); mGestureDetector.setOnDoubleTapListener(new DefaultOnDoubleTapListener( this)); // Finally, update the UI so that we're zoomable setZoomable(true); } @Override public void setOnDoubleTapListener( GestureDetector.OnDoubleTapListener newOnDoubleTapListener) { if (newOnDoubleTapListener != null) this.mGestureDetector .setOnDoubleTapListener(newOnDoubleTapListener); else this.mGestureDetector .setOnDoubleTapListener(new DefaultOnDoubleTapListener(this)); } @Override public boolean canZoom() { return mZoomEnabled; } @SuppressWarnings("deprecation") public void cleanup() { if (null == mImageView) { return; // cleanup already done } final ImageView imageView = mImageView.get(); if (null != imageView) { // Remove this as a global layout listener ViewTreeObserver observer = imageView.getViewTreeObserver(); if (null != observer && observer.isAlive()) { observer.removeGlobalOnLayoutListener(this); } // Remove the ImageView's reference to this imageView.setOnTouchListener(null); // make sure a pending fling runnable won't be run cancelFling(); } if (null != mGestureDetector) { mGestureDetector.setOnDoubleTapListener(null); } // Clear listeners too mMatrixChangeListener = null; mPhotoTapListener = null; mViewTapListener = null; // Finally, clear ImageView mImageView = null; } @Override public RectF getDisplayRect() { checkMatrixBounds(); return getDisplayRect(getDrawMatrix()); } @Override public boolean setDisplayMatrix(Matrix finalMatrix) { if (finalMatrix == null) throw new IllegalArgumentException("Matrix cannot be null"); ImageView imageView = getImageView(); if (null == imageView) return false; if (null == imageView.getDrawable()) return false; mSuppMatrix.set(finalMatrix); setImageViewMatrix(getDrawMatrix()); checkMatrixBounds(); return true; } /** * @deprecated use {@link #setRotationTo(float)} */ @Override public void setPhotoViewRotation(float degrees) { mSuppMatrix.setRotate(degrees % 360); checkAndDisplayMatrix(); } @Override public void setRotationTo(float degrees) { mSuppMatrix.setRotate(degrees % 360); checkAndDisplayMatrix(); } @Override public void setRotationBy(float degrees) { mSuppMatrix.postRotate(degrees