大学毕业设计-校园小助手.zip

package com.cretin.collegehelper.views; /** * Created by cretin on 16/3/1. */ import android.content.Context; import android.graphics.Canvas; import android.graphics.Matrix; import android.graphics.PointF; import android.graphics.RectF; import android.graphics.drawable.Drawable; import android.util.AttributeSet; import android.view.GestureDetector; import android.view.MotionEvent; import android.view.ScaleGestureDetector; import android.view.View; import android.view.ViewGroup; import android.view.ViewParent; import android.view.animation.DecelerateInterpolator; import android.widget.ImageView; import android.widget.OverScroller; import android.widget.Scroller; /** * Created by liuheng on 2015/6/21. * <p></p> * 如有任何意见和建议可邮件 bmme@vip.qq.com */ public class PhotoView extends ImageView { private final static int MIN_ROTATE = 35; private final static int ANIMA_DURING = 320; private final static float MAX_SCALE = 2.5f; private int MAX_OVER_SCROLL = 0; private int MAX_FLING_OVER_SCROLL = 0; private int MAX_OVER_RESISTANCE = 0; private int MAX_ANIM_FROM_WAITE = 500; private Matrix mBaseMatrix = new Matrix(); private Matrix mAnimaMatrix = new Matrix(); private Matrix mSynthesisMatrix = new Matrix(); private Matrix mTmpMatrix = new Matrix(); private RotateGestureDetector mRotateDetector; private GestureDetector mDetector; private ScaleGestureDetector mScaleDetector; private OnClickListener mClickListener; private ScaleType mScaleType; private boolean hasMultiTouch; private boolean hasDrawable; private boolean isKnowSize; private boolean hasOverTranslate; private boolean isEnable = false; private boolean isInit; private boolean mAdjustViewBounds; // 当前是否处于放大状态 private boolean isZoonUp; private boolean canRotate; private boolean imgLargeWidth; private boolean imgLargeHeight; private float mRotateFlag; private float mDegrees; private float mScale = 1.0f; private int mTranslateX; private int mTranslateY; private float mHalfBaseRectWidth; private float mHalfBaseRectHeight; private RectF mWidgetRect = new RectF(); private RectF mBaseRect = new RectF(); private RectF mImgRect = new RectF(); private RectF mTmpRect = new RectF(); private RectF mCommonRect = new RectF(); private PointF mScreenCenter = new PointF(); private PointF mScaleCenter = new PointF(); private PointF mRotateCenter = new PointF(); private Transform mTranslate = new Transform(); private RectF mClip; private Info mInfo; private long mInfoTime; private Runnable mCompleteCallBack; public OnDropListener getmDropListener() { return mDropListener; } public void setmDropListener(OnDropListener mDropListener) { this.mDropListener = mDropListener; mRotateDetector.setDropListener(mDropListener); } public boolean isZoonUp() { return isZoonUp; } private OnDropListener mDropListener; private float[] mValues = new float[16]; public PhotoView(Context context) { super(context); init(); } public PhotoView(Context context, AttributeSet attrs) { super(context, attrs); init(); } public PhotoView(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); init(); } private void init() { super.setScaleType(ScaleType.MATRIX); if (mScaleType == null) mScaleType = ScaleType.CENTER_INSIDE; mRotateDetector = new RotateGestureDetector(mRotateListener); mDetector = new GestureDetector(getContext(), mGestureListener); mScaleDetector = new ScaleGestureDetector(getContext(), mScaleListener); float density = getResources().getDisplayMetrics().density; MAX_OVER_SCROLL = (int) (density * 30); MAX_FLING_OVER_SCROLL = (int) (density * 30); MAX_OVER_RESISTANCE = (int) (density * 140); } public static int getDefaultAnimaDuring() { return ANIMA_DURING; } @Override public void setOnClickListener(OnClickListener l) { super.setOnClickListener(l); mClickListener = l; } @Override public void setScaleType(ScaleType scaleType) { ScaleType old = mScaleType; mScaleType = scaleType; if (old != scaleType) initBase(); } public void enable() { isEnable = true; } public void disenable() { isEnable = false; } /** */ public void setMaxAnimFromWaiteTime(int wait) { MAX_ANIM_FROM_WAITE = wait; } @Override public void setImageResource(int resId) { Drawable drawable = null; try { drawable = getResources().getDrawable(resId); } catch (Exception e) { } setImageDrawable(drawable); } @Override public void setImageDrawable(Drawable drawable) { super.setImageDrawable(drawable); if (drawable == null) { hasDrawable = false; return; } if (!hasSize(drawable)) return; if (!hasDrawable) { hasDrawable = true; } initBase(); } private boolean hasSize(Drawable d) { if ((d.getIntrinsicHeight() <= 0 || d.getIntrinsicWidth() <= 0) && (d.getMinimumWidth() <= 0 || d.getMinimumHeight() <= 0) && (d.getBounds().width() <= 0 || d.getBounds().height() <= 0)) { return false; } return true; } private int getDrawableWidth(Drawable d) { int width = d.getIntrinsicWidth(); if (width <= 0) width = d.getMinimumWidth(); if (width <= 0) width = d.getBounds().width(); return width; } private int getDrawableHeight(Drawable d) { int height = d.getIntrinsicHeight(); if (height <= 0) height = d.getMinimumHeight(); if (height <= 0) height = d.getBounds().height(); return height; } private void initBase() { if (!hasDrawable) return; if (!isKnowSize) return; mBaseMatrix.reset(); mAnimaMatrix.reset(); isZoonUp = false; Drawable img = getDrawable(); int w = getWidth(); int h = getHeight(); int imgw = getDrawableWidth(img); int imgh = getDrawableHeight(img); mBaseRect.set(0, 0, imgw, imgh); // 以图片中心点居中位移 int tx = (w - imgw) / 2; int ty = (h - imgh) / 2; float sx = 1; float sy = 1; // 缩放，默认不超过屏幕大小 if (imgw > w) { sx = (float) w / imgw; } if (imgh > h) { sy = (float) h / imgh; } float scale = sx < sy ? sx : sy; mBaseMatrix.reset(); mBaseMatrix.postTranslate(tx, ty); mBaseMatrix.postScale(scale, scale, mScreenCenter.x, mScreenCenter.y); mBaseMatrix.mapRect(mBaseRect); mHalfBaseRectWidth = mBaseRect.width() / 2; mHalfBaseRectHeight = mBaseRect.height() / 2; mScaleCenter.set(mScreenCenter); mRotateCenter.set(mScaleCenter); executeTranslate(); switch (mScaleType) { case CENTER: initCenter(); break; case CENTER_CROP: initCenterCrop(); break; case CENTER_INSIDE: initCenterInside(); break; case FIT_CENTER: initFitCenter(); break; case FIT_START: initFitStart(); break; case FIT_END: initFitEnd(); break; case FIT_XY: initFitXY(); break; } isInit = true;