diff --git a/app/src/main/java/io/legado/app/ui/book/read/page/ContentTextView.kt b/app/src/main/java/io/legado/app/ui/book/read/page/ContentTextView.kt index e2365b047..95f81f96d 100644 --- a/app/src/main/java/io/legado/app/ui/book/read/page/ContentTextView.kt +++ b/app/src/main/java/io/legado/app/ui/book/read/page/ContentTextView.kt @@ -16,6 +16,7 @@ import io.legado.app.ui.book.read.page.entities.TextLine import io.legado.app.ui.book.read.page.entities.TextPage import io.legado.app.ui.book.read.page.provider.ChapterProvider import io.legado.app.ui.book.read.page.provider.ImageProvider +import io.legado.app.ui.widget.dialog.PhotoDialog import io.legado.app.utils.activity import io.legado.app.utils.getCompatColor import io.legado.app.utils.getPrefBoolean @@ -213,88 +214,70 @@ class ContentTextView(context: Context, attrs: AttributeSet?) : View(context, at ) { if (!selectAble) return if (!visibleRect.contains(x, y)) return - var relativeOffset = relativeOffset(0) - for ((lineIndex, textLine) in textPage.textLines.withIndex()) { - if (y > textLine.lineTop + relativeOffset && y < textLine.lineBottom + relativeOffset) { - for ((charIndex, textChar) in textLine.textChars.withIndex()) { - if (x > textChar.start && x < textChar.end) { - textChar.selected = true - invalidate() - selectStart[0] = 0 - selectStart[1] = lineIndex - selectStart[2] = charIndex - selectEnd[0] = 0 - selectEnd[1] = lineIndex - selectEnd[2] = charIndex - upSelectedStart( - textChar.start, - textLine.lineBottom + relativeOffset, - textLine.lineTop + relativeOffset - ) - upSelectedEnd(textChar.end, textLine.lineBottom + relativeOffset) - select(0, lineIndex, charIndex) - return - } - } - return + var relativeOffset: Float + for (relativePos in 0..2) { + relativeOffset = relativeOffset(relativePos) + if (relativePos > 0) { + //滚动翻页 + if (!ReadBookConfig.isScroll) return + if (relativeOffset >= ChapterProvider.visibleHeight) return } - } - if (!ReadBookConfig.isScroll) return - //滚动翻页 - relativeOffset = relativeOffset(1) - if (relativeOffset >= ChapterProvider.visibleHeight) return - val nextPage = relativePage(1) - for ((lineIndex, textLine) in nextPage.textLines.withIndex()) { - if (y > textLine.lineTop + relativeOffset && y < textLine.lineBottom + relativeOffset) { - for ((charIndex, textChar) in textLine.textChars.withIndex()) { - if (x > textChar.start && x < textChar.end) { - textChar.selected = true - invalidate() - selectStart[0] = 1 - selectStart[1] = lineIndex - selectStart[2] = charIndex - selectEnd[0] = 1 - selectEnd[1] = lineIndex - selectEnd[2] = charIndex - upSelectedStart( - textChar.start, - textLine.lineBottom + relativeOffset, - textLine.lineTop + relativeOffset - ) - upSelectedEnd(textChar.end, textLine.lineBottom + relativeOffset) - select(1, lineIndex, charIndex) - return + val page = relativePage(relativePos) + for ((lineIndex, textLine) in page.textLines.withIndex()) { + if (y > textLine.lineTop + relativeOffset && y < textLine.lineBottom + relativeOffset) { + for ((charIndex, textChar) in textLine.textChars.withIndex()) { + if (x > textChar.start && x < textChar.end) { + initSelect( + page.chapterIndex, + relativePos, + textLine, + textChar, + lineIndex, + charIndex, + relativeOffset, + select + ) + return + } } + return } - return } + } - relativeOffset = relativeOffset(2) - if (relativeOffset >= ChapterProvider.visibleHeight) return - for ((lineIndex, textLine) in relativePage(2).textLines.withIndex()) { - if (y > textLine.lineTop + relativeOffset && y < textLine.lineBottom + relativeOffset) { - for ((charIndex, textChar) in textLine.textChars.withIndex()) { - if (x > textChar.start && x < textChar.end) { - textChar.selected = true - invalidate() - selectStart[0] = 2 - selectStart[1] = lineIndex - selectStart[2] = charIndex - selectEnd[0] = 2 - selectEnd[1] = lineIndex - selectEnd[2] = charIndex - upSelectedStart( - textChar.start, - textLine.lineBottom + relativeOffset, - textLine.lineTop + relativeOffset - ) - upSelectedEnd(textChar.end, textLine.lineBottom + relativeOffset) - select(2, lineIndex, charIndex) - return - } - } - return + + } + + private fun initSelect( + chapterIndex: Int, + relativePage: Int, + textLine: TextLine, + textChar: TextChar, + lineIndex: Int, + charIndex: Int, + relativeOffset: Float, + select: (relativePage: Int, lineIndex: Int, charIndex: Int) -> Unit + ) { + if (textChar.isImage) { + activity?.supportFragmentManager?.let { + PhotoDialog.show(it, chapterIndex, textChar.charData) } + } else { + textChar.selected = true + invalidate() + selectStart[0] = relativePage + selectStart[1] = lineIndex + selectStart[2] = charIndex + selectEnd[0] = relativePage + selectEnd[1] = lineIndex + selectEnd[2] = charIndex + upSelectedStart( + textChar.start, + textLine.lineBottom + relativeOffset, + textLine.lineTop + relativeOffset + ) + upSelectedEnd(textChar.end, textLine.lineBottom + relativeOffset) + select(relativePage, lineIndex, charIndex) } } diff --git a/app/src/main/java/io/legado/app/ui/widget/dialog/PhotoDialog.kt b/app/src/main/java/io/legado/app/ui/widget/dialog/PhotoDialog.kt new file mode 100644 index 000000000..74dfe23cd --- /dev/null +++ b/app/src/main/java/io/legado/app/ui/widget/dialog/PhotoDialog.kt @@ -0,0 +1,68 @@ +package io.legado.app.ui.widget.dialog + +import android.os.Bundle +import android.util.DisplayMetrics +import android.view.LayoutInflater +import android.view.View +import android.view.ViewGroup +import androidx.fragment.app.FragmentManager +import io.legado.app.R +import io.legado.app.base.BaseDialogFragment +import io.legado.app.service.help.ReadBook +import io.legado.app.ui.book.read.page.provider.ImageProvider +import kotlinx.android.synthetic.main.dialog_photo_view.* + + +class PhotoDialog : BaseDialogFragment() { + + companion object { + + fun show( + fragmentManager: FragmentManager, + chapterIndex: Int, + src: String + ) { + PhotoDialog().apply { + val bundle = Bundle() + bundle.putInt("chapterIndex", chapterIndex) + bundle.putString("src", src) + arguments = bundle + }.show(fragmentManager, "photoDialog") + } + + } + + override fun onStart() { + super.onStart() + val dm = DisplayMetrics() + activity?.windowManager?.defaultDisplay?.getMetrics(dm) + dialog?.window?.setLayout( + ViewGroup.LayoutParams.MATCH_PARENT, + ViewGroup.LayoutParams.MATCH_PARENT + ) + } + + override fun onCreateView( + inflater: LayoutInflater, + container: ViewGroup?, + savedInstanceState: Bundle? + ): View? { + return inflater.inflate(R.layout.dialog_photo_view, container) + } + + override fun onFragmentCreated(view: View, savedInstanceState: Bundle?) { + arguments?.let { + val chapterIndex = it.getInt("chapterIndex") + val src = it.getString("src") + ReadBook.book?.let { book -> + src?.let { + ImageProvider.getImage(book, chapterIndex, src)?.let { bitmap -> + photo_view.setImageBitmap(bitmap) + } + } + } + } + + } + +} diff --git a/app/src/main/java/io/legado/app/ui/widget/image/PhotoView.kt b/app/src/main/java/io/legado/app/ui/widget/image/PhotoView.kt new file mode 100644 index 000000000..e1cca4515 --- /dev/null +++ b/app/src/main/java/io/legado/app/ui/widget/image/PhotoView.kt @@ -0,0 +1,1267 @@ +package io.legado.app.ui.widget.image + +import android.annotation.SuppressLint +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.* +import android.view.GestureDetector.SimpleOnGestureListener +import android.view.ScaleGestureDetector.OnScaleGestureListener +import android.view.animation.DecelerateInterpolator +import android.view.animation.Interpolator +import android.widget.ImageView +import android.widget.OverScroller +import android.widget.Scroller +import io.legado.app.R +import io.legado.app.ui.widget.image.photo.Info +import io.legado.app.ui.widget.image.photo.OnRotateListener +import io.legado.app.ui.widget.image.photo.RotateGestureDetector +import kotlin.math.abs +import kotlin.math.roundToInt + + +@SuppressLint("AppCompatCustomView") +class PhotoView : ImageView { + val MIN_ROTATE = 35 + val ANIMA_DURING = 340 + val MAX_SCALE = 2.5f + + private var mMinRotate = 0 + var mAnimaDuring = 0 + private var mMaxScale = 0f + + var MAX_OVER_SCROLL = 0 + var MAX_FLING_OVER_SCROLL = 0 + var MAX_OVER_RESISTANCE = 0 + var MAX_ANIM_FROM_WAITE = 500 + + private val mBaseMatrix: Matrix = Matrix() + private val mAnimMatrix: Matrix = Matrix() + private val mSynthesisMatrix: Matrix = Matrix() + private val mTmpMatrix: Matrix = Matrix() + + private var mRotateDetector: RotateGestureDetector? = null + private var mDetector: GestureDetector? = null + private var mScaleDetector: ScaleGestureDetector? = null + private var mClickListener: OnClickListener? = null + + private var mScaleType: ScaleType? = null + + private var hasMultiTouch = false + private var hasDrawable = false + private var isKnowSize = false + private var hasOverTranslate = false + + //缩放 + var isEnable = true + + //旋转 + var isRotateEnable = false + private var isInit = false + private var mAdjustViewBounds = false + + // 当前是否处于放大状态 + private var isZoonUp = false + private var canRotate = false + + private var imgLargeWidth = false + private var imgLargeHeight = false + + private var mRotateFlag = 0f + private var mDegrees = 0f + private var mScale = 1.0f + private var mTranslateX = 0 + private var mTranslateY = 0 + + private var mHalfBaseRectWidth = 0f + private var mHalfBaseRectHeight = 0f + + private val mWidgetRect = RectF() + private val mBaseRect = RectF() + private val mImgRect = RectF() + private val mTmpRect = RectF() + private val mCommonRect = RectF() + + private val mScreenCenter = PointF() + private val mScaleCenter = PointF() + private val mRotateCenter = PointF() + + private val mTranslate: Transform = Transform() + + private var mClip: RectF? = null + private var mFromInfo: Info? = null + private var mInfoTime: Long = 0 + private var mCompleteCallBack: Runnable? = null + + private var mLongClick: OnLongClickListener? = null + + constructor(context: Context) : super(context) { + init() + } + + constructor(context: Context, attrs: AttributeSet) : super(context, attrs) { + init() + } + + constructor(context: Context, attrs: AttributeSet, defStyleAttr: Int) : super( + context, + attrs, + defStyleAttr + ) { + init() + } + + private fun init() { + super.setScaleType(ScaleType.MATRIX) + if (mScaleType == null) mScaleType = ScaleType.CENTER_INSIDE + mRotateDetector = RotateGestureDetector(mRotateListener) + mDetector = GestureDetector(context, mGestureListener) + mScaleDetector = ScaleGestureDetector(context, mScaleListener) + val density = resources.displayMetrics.density + MAX_OVER_SCROLL = (density * 30).toInt() + MAX_FLING_OVER_SCROLL = (density * 30).toInt() + MAX_OVER_RESISTANCE = (density * 140).toInt() + mMinRotate = MIN_ROTATE + mAnimaDuring = ANIMA_DURING + mMaxScale = MAX_SCALE + } + + /** + * 获取默认的动画持续时间 + */ + fun getDefaultAnimDuring(): Int { + return ANIMA_DURING + } + + override fun setOnClickListener(l: OnClickListener?) { + super.setOnClickListener(l) + mClickListener = l + } + + override fun setScaleType(scaleType: ScaleType) { + if (scaleType == ScaleType.MATRIX) return + if (scaleType != mScaleType) { + mScaleType = scaleType + if (isInit) { + initBase() + } + } + } + + override fun setOnLongClickListener(l: OnLongClickListener?) { + mLongClick = l + } + + /** + * 设置动画的插入器 + */ + fun setInterpolator(interpolator: Interpolator?) { + mTranslate.setInterpolator(interpolator) + } + + /** + * 获取动画持续时间 + */ + fun getAnimDuring(): Int { + return mAnimaDuring + } + + /** + * 设置动画的持续时间 + */ + fun setAnimDuring(during: Int) { + mAnimaDuring = during + } + + /** + * 设置最大可以缩放的倍数 + */ + fun setMaxScale(maxScale: Float) { + mMaxScale = maxScale + } + + /** + * 获取最大可以缩放的倍数 + */ + fun getMaxScale(): Float { + return mMaxScale + } + + /** + */ + fun setMaxAnimFromWaiteTime(wait: Int) { + MAX_ANIM_FROM_WAITE = wait + } + + override fun setImageResource(resId: Int) { + var drawable: Drawable? = null + try { + drawable = resources.getDrawable(resId) + } catch (e: Exception) { + } + setImageDrawable(drawable) + } + + override fun setImageDrawable(drawable: Drawable?) { + super.setImageDrawable(drawable) + if (drawable == null) { + hasDrawable = false + return + } + if (!hasSize(drawable)) return + if (!hasDrawable) { + hasDrawable = true + } + initBase() + } + + private fun hasSize(d: Drawable): Boolean { + return !((d.intrinsicHeight <= 0 || d.intrinsicWidth <= 0) + && (d.minimumWidth <= 0 || d.minimumHeight <= 0) + && (d.bounds.width() <= 0 || d.bounds.height() <= 0)) + } + + private fun getDrawableWidth(d: Drawable): Int { + var width = d.intrinsicWidth + if (width <= 0) width = d.minimumWidth + if (width <= 0) width = d.bounds.width() + return width + } + + private fun getDrawableHeight(d: Drawable): Int { + var height = d.intrinsicHeight + if (height <= 0) height = d.minimumHeight + if (height <= 0) height = d.bounds.height() + return height + } + + private fun initBase() { + if (!hasDrawable) return + if (!isKnowSize) return + mBaseMatrix.reset() + mAnimMatrix.reset() + isZoonUp = false + val img = drawable + val w = width + val h = height + val imgw = getDrawableWidth(img) + val imgh = getDrawableHeight(img) + mBaseRect[0f, 0f, imgw.toFloat()] = imgh.toFloat() + + // 以图片中心点居中位移 + val tx = (w - imgw) / 2 + val ty = (h - imgh) / 2 + var sx = 1f + var sy = 1f + + // 缩放，默认不超过屏幕大小 + if (imgw > w) { + sx = w.toFloat() / imgw + } + if (imgh > h) { + sy = h.toFloat() / imgh + } + val scale = if (sx < sy) sx else sy + mBaseMatrix.reset() + mBaseMatrix.postTranslate(tx.toFloat(), ty.toFloat()) + 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() + when (mScaleType) { + ScaleType.CENTER -> initCenter() + ScaleType.CENTER_CROP -> initCenterCrop() + ScaleType.CENTER_INSIDE -> initCenterInside() + ScaleType.FIT_CENTER -> initFitCenter() + ScaleType.FIT_START -> initFitStart() + ScaleType.FIT_END -> initFitEnd() + ScaleType.FIT_XY -> initFitXY() + } + isInit = true + mFromInfo?.let { + if (System.currentTimeMillis() - mInfoTime < MAX_ANIM_FROM_WAITE) { + animaFrom(it) + } + } + mFromInfo = null + } + + private fun initCenter() { + if (!hasDrawable) return + if (!isKnowSize) return + val img = drawable + val imgw = getDrawableWidth(img) + val imgh = getDrawableHeight(img) + if (imgw > mWidgetRect.width() || imgh > mWidgetRect.height()) { + val scaleX = imgw / mImgRect.width() + val scaleY = imgh / mImgRect.height() + mScale = if (scaleX > scaleY) scaleX else scaleY + mAnimMatrix.postScale(mScale, mScale, mScreenCenter.x, mScreenCenter.y) + executeTranslate() + resetBase() + } + } + + private fun initCenterCrop() { + if (mImgRect.width() < mWidgetRect.width() || mImgRect.height() < mWidgetRect.height()) { + val scaleX = mWidgetRect.width() / mImgRect.width() + val scaleY = mWidgetRect.height() / mImgRect.height() + mScale = if (scaleX > scaleY) scaleX else scaleY + mAnimMatrix.postScale(mScale, mScale, mScreenCenter.x, mScreenCenter.y) + executeTranslate() + resetBase() + } + } + + private fun initCenterInside() { + if (mImgRect.width() > mWidgetRect.width() || mImgRect.height() > mWidgetRect.height()) { + val scaleX = mWidgetRect.width() / mImgRect.width() + val scaleY = mWidgetRect.height() / mImgRect.height() + mScale = if (scaleX < scaleY) scaleX else scaleY + mAnimMatrix.postScale(mScale, mScale, mScreenCenter.x, mScreenCenter.y) + executeTranslate() + resetBase() + } + } + + private fun initFitCenter() { + if (mImgRect.width() < mWidgetRect.width()) { + mScale = mWidgetRect.width() / mImgRect.width() + mAnimMatrix.postScale(mScale, mScale, mScreenCenter.x, mScreenCenter.y) + executeTranslate() + resetBase() + } + } + + private fun initFitStart() { + initFitCenter() + val ty = -mImgRect.top + mAnimMatrix.postTranslate(0f, ty) + executeTranslate() + resetBase() + mTranslateY += ty.toInt() + } + + private fun initFitEnd() { + initFitCenter() + val ty = mWidgetRect.bottom - mImgRect.bottom + mTranslateY += ty.toInt() + mAnimMatrix.postTranslate(0f, ty) + executeTranslate() + resetBase() + } + + private fun initFitXY() { + val scaleX = mWidgetRect.width() / mImgRect.width() + val scaleY = mWidgetRect.height() / mImgRect.height() + mAnimMatrix.postScale(scaleX, scaleY, mScreenCenter.x, mScreenCenter.y) + executeTranslate() + resetBase() + } + + private fun resetBase() { + val img = drawable + val imgw = getDrawableWidth(img) + val imgh = getDrawableHeight(img) + mBaseRect[0f, 0f, imgw.toFloat()] = imgh.toFloat() + mBaseMatrix.set(mSynthesisMatrix) + mBaseMatrix.mapRect(mBaseRect) + mHalfBaseRectWidth = mBaseRect.width() / 2 + mHalfBaseRectHeight = mBaseRect.height() / 2 + mScale = 1f + mTranslateX = 0 + mTranslateY = 0 + mAnimMatrix.reset() + } + + private fun executeTranslate() { + mSynthesisMatrix.set(mBaseMatrix) + mSynthesisMatrix.postConcat(mAnimMatrix) + imageMatrix = mSynthesisMatrix + mAnimMatrix.mapRect(mImgRect, mBaseRect) + imgLargeWidth = mImgRect.width() > mWidgetRect.width() + imgLargeHeight = mImgRect.height() > mWidgetRect.height() + } + + override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) { + if (!hasDrawable) { + super.onMeasure(widthMeasureSpec, heightMeasureSpec) + return + } + val d = drawable + val drawableW = getDrawableWidth(d) + val drawableH = getDrawableHeight(d) + val pWidth = MeasureSpec.getSize(widthMeasureSpec) + val pHeight = MeasureSpec.getSize(heightMeasureSpec) + val widthMode = MeasureSpec.getMode(widthMeasureSpec) + val heightMode = MeasureSpec.getMode(heightMeasureSpec) + var width = 0 + var height = 0 + var p = layoutParams + if (p == null) { + p = ViewGroup.LayoutParams( + ViewGroup.LayoutParams.WRAP_CONTENT, + ViewGroup.LayoutParams.WRAP_CONTENT + ) + } + width = if (p.width == ViewGroup.LayoutParams.MATCH_PARENT) { + if (widthMode == MeasureSpec.UNSPECIFIED) { + drawableW + } else { + pWidth + } + } else { + if (widthMode == MeasureSpec.EXACTLY) { + pWidth + } else if (widthMode == MeasureSpec.AT_MOST) { + if (drawableW > pWidth) pWidth else drawableW + } else { + drawableW + } + } + height = if (p.height == ViewGroup.LayoutParams.MATCH_PARENT) { + if (heightMode == MeasureSpec.UNSPECIFIED) { + drawableH + } else { + pHeight + } + } else { + if (heightMode == MeasureSpec.EXACTLY) { + pHeight + } else if (heightMode == MeasureSpec.AT_MOST) { + if (drawableH > pHeight) pHeight else drawableH + } else { + drawableH + } + } + if (mAdjustViewBounds && drawableW.toFloat() / drawableH != width.toFloat() / height) { + val hScale = height.toFloat() / drawableH + val wScale = width.toFloat() / drawableW + val scale = if (hScale < wScale) hScale else wScale + width = + if (p.width == ViewGroup.LayoutParams.MATCH_PARENT) width else (drawableW * scale).toInt() + height = + if (p.height == ViewGroup.LayoutParams.MATCH_PARENT) height else (drawableH * scale).toInt() + } + setMeasuredDimension(width, height) + } + + override fun setAdjustViewBounds(adjustViewBounds: Boolean) { + super.setAdjustViewBounds(adjustViewBounds) + mAdjustViewBounds = adjustViewBounds + } + + override fun onSizeChanged(w: Int, h: Int, oldw: Int, oldh: Int) { + super.onSizeChanged(w, h, oldw, oldh) + mWidgetRect[0f, 0f, w.toFloat()] = h.toFloat() + mScreenCenter[w / 2.toFloat()] = h / 2.toFloat() + if (!isKnowSize) { + isKnowSize = true + initBase() + } + } + + override fun draw(canvas: Canvas) { + mClip?.let { + canvas.clipRect(it) + mClip = null + } + super.draw(canvas) + } + + override fun dispatchTouchEvent(event: MotionEvent): Boolean { + return if (isEnable) { + val action = event.actionMasked + if (event.pointerCount >= 2) hasMultiTouch = true + mDetector!!.onTouchEvent(event) + if (isRotateEnable) { + mRotateDetector!!.onTouchEvent(event) + } + mScaleDetector!!.onTouchEvent(event) + if (action == MotionEvent.ACTION_UP || action == MotionEvent.ACTION_CANCEL) onUp() + true + } else { + super.dispatchTouchEvent(event) + } + } + + private fun onUp() { + if (mTranslate.isRunning) return + if (canRotate || mDegrees % 90 != 0f) { + var toDegrees = (mDegrees / 90).toInt() * 90.toFloat() + val remainder = mDegrees % 90 + if (remainder > 45) toDegrees += 90f else if (remainder < -45) toDegrees -= 90f + mTranslate.withRotate(mDegrees.toInt(), toDegrees.toInt()) + mDegrees = toDegrees + } + var scale = mScale + if (mScale < 1) { + scale = 1f + mTranslate.withScale(mScale, 1F) + } else if (mScale > mMaxScale) { + scale = mMaxScale + mTranslate.withScale(mScale, mMaxScale) + } + val cx = mImgRect.left + mImgRect.width() / 2 + val cy = mImgRect.top + mImgRect.height() / 2 + mScaleCenter[cx] = cy + mRotateCenter[cx] = cy + mTranslateX = 0 + mTranslateY = 0 + mTmpMatrix.reset() + mTmpMatrix.postTranslate(-mBaseRect.left, -mBaseRect.top) + mTmpMatrix.postTranslate(cx - mHalfBaseRectWidth, cy - mHalfBaseRectHeight) + mTmpMatrix.postScale(scale, scale, cx, cy) + mTmpMatrix.postRotate(mDegrees, cx, cy) + mTmpMatrix.mapRect(mTmpRect, mBaseRect) + doTranslateReset(mTmpRect) + mTranslate.start() + } + + private fun doTranslateReset(imgRect: RectF) { + var tx = 0 + var ty = 0 + if (imgRect.width() <= mWidgetRect.width()) { + if (!isImageCenterWidth(imgRect)) tx = + (-((mWidgetRect.width() - imgRect.width()) / 2 - imgRect.left)).toInt() + } else { + if (imgRect.left > mWidgetRect.left) { + tx = (imgRect.left - mWidgetRect.left).toInt() + } else if (imgRect.right < mWidgetRect.right) { + tx = (imgRect.right - mWidgetRect.right).toInt() + } + } + if (imgRect.height() <= mWidgetRect.height()) { + if (!isImageCenterHeight(imgRect)) ty = + (-((mWidgetRect.height() - imgRect.height()) / 2 - imgRect.top)).toInt() + } else { + if (imgRect.top > mWidgetRect.top) { + ty = (imgRect.top - mWidgetRect.top).toInt() + } else if (imgRect.bottom < mWidgetRect.bottom) { + ty = (imgRect.bottom - mWidgetRect.bottom).toInt() + } + } + if (tx != 0 || ty != 0) { + if (!mTranslate.mFlingScroller.isFinished) mTranslate.mFlingScroller.abortAnimation() + mTranslate.withTranslate(mTranslateX, mTranslateY, -tx, -ty) + } + } + + private fun isImageCenterHeight(rect: RectF): Boolean { + return abs(rect.top.roundToInt() - (mWidgetRect.height() - rect.height()) / 2) < 1 + } + + private fun isImageCenterWidth(rect: RectF): Boolean { + return abs(rect.left.roundToInt() - (mWidgetRect.width() - rect.width()) / 2) < 1 + } + + private val mRotateListener: OnRotateListener = object : + OnRotateListener { + override fun onRotate( + degrees: Float, + focusX: Float, + focusY: Float + ) { + mRotateFlag += degrees + if (canRotate) { + mDegrees += degrees + mAnimMatrix.postRotate(degrees, focusX, focusY) + } else { + if (abs(mRotateFlag) >= mMinRotate) { + canRotate = true + mRotateFlag = 0f + } + } + } + } + + private val mScaleListener: OnScaleGestureListener = object : OnScaleGestureListener { + override fun onScale(detector: ScaleGestureDetector): Boolean { + val scaleFactor = detector.scaleFactor + if (java.lang.Float.isNaN(scaleFactor) || java.lang.Float.isInfinite(scaleFactor)) return false + mScale *= scaleFactor + //mScaleCenter.set(detector.getFocusX(), detector.getFocusY()); + mAnimMatrix.postScale( + scaleFactor, + scaleFactor, + detector.focusX, + detector.focusY + ) + executeTranslate() + return true + } + + override fun onScaleBegin(detector: ScaleGestureDetector): Boolean { + return true + } + + override fun onScaleEnd(detector: ScaleGestureDetector) {} + } + + private fun resistanceScrollByX( + overScroll: Float, + detalX: Float + ): Float { + return detalX * (abs(abs(overScroll) - MAX_OVER_RESISTANCE) / MAX_OVER_RESISTANCE.toFloat()) + } + + private fun resistanceScrollByY( + overScroll: Float, + detalY: Float + ): Float { + return detalY * (abs(abs(overScroll) - MAX_OVER_RESISTANCE) / MAX_OVER_RESISTANCE.toFloat()) + } + + /** + * 匹配两个Rect的共同部分输出到out，若无共同部分则输出0，0，0，0 + */ + private fun mapRect(r1: RectF, r2: RectF, out: RectF) { + val l: Float = if (r1.left > r2.left) r1.left else r2.left + val r: Float = if (r1.right < r2.right) r1.right else r2.right + if (l > r) { + out[0f, 0f, 0f] = 0f + return + } + val t: Float = if (r1.top > r2.top) r1.top else r2.top + val b: Float = if (r1.bottom < r2.bottom) r1.bottom else r2.bottom + if (t > b) { + out[0f, 0f, 0f] = 0f + return + } + out[l, t, r] = b + } + + private fun checkRect() { + if (!hasOverTranslate) { + mapRect(mWidgetRect, mImgRect, mCommonRect) + } + } + + private val mClickRunnable = Runnable { + mClickListener?.onClick(this) + } + + private val mGestureListener: GestureDetector.OnGestureListener = + object : SimpleOnGestureListener() { + override fun onLongPress(e: MotionEvent) { + mLongClick?.onLongClick(this@PhotoView) + } + + override fun onDown(e: MotionEvent): Boolean { + hasOverTranslate = false + hasMultiTouch = false + canRotate = false + removeCallbacks(mClickRunnable) + return false + } + + override fun onFling( + e1: MotionEvent, + e2: MotionEvent, + velocityX: Float, + velocityY: Float + ): Boolean { + if (hasMultiTouch) return false + if (!imgLargeWidth && !imgLargeHeight) return false + if (mTranslate.isRunning) return false + var vx = velocityX + var vy = velocityY + if (mImgRect.left.roundToInt() >= mWidgetRect.left + || mImgRect.right.roundToInt() <= mWidgetRect.right + ) { + vx = 0f + } + if (mImgRect.top.roundToInt() >= mWidgetRect.top + || mImgRect.bottom.roundToInt() <= mWidgetRect.bottom + ) { + vy = 0f + } + if (canRotate || mDegrees % 90 != 0f) { + var toDegrees = (mDegrees / 90).toInt() * 90.toFloat() + val remainder = mDegrees % 90 + if (remainder > 45) toDegrees += 90f else if (remainder < -45) toDegrees -= 90f + mTranslate.withRotate(mDegrees.toInt(), toDegrees.toInt()) + mDegrees = toDegrees + } + doTranslateReset(mImgRect) + mTranslate.withFling(vx, vy) + mTranslate.start() + // onUp(e2); + return super.onFling(e1, e2, velocityX, velocityY) + } + + override fun onScroll( + e1: MotionEvent, + e2: MotionEvent, + distanceX: Float, + distanceY: Float + ): Boolean { + var distanceX = distanceX + var distanceY = distanceY + if (mTranslate.isRunning) { + mTranslate.stop() + } + if (canScrollHorizontallySelf(distanceX)) { + if (distanceX < 0 && mImgRect.left - distanceX > mWidgetRect.left) distanceX = + mImgRect.left + if (distanceX > 0 && mImgRect.right - distanceX < mWidgetRect.right) distanceX = + mImgRect.right - mWidgetRect.right + mAnimMatrix.postTranslate(-distanceX, 0f) + mTranslateX -= distanceX.toInt() + } else if (imgLargeWidth || hasMultiTouch || hasOverTranslate) { + checkRect() + if (!hasMultiTouch) { + if (distanceX < 0 && mImgRect.left - distanceX > mCommonRect.left) distanceX = + resistanceScrollByX(mImgRect.left - mCommonRect.left, distanceX) + if (distanceX > 0 && mImgRect.right - distanceX < mCommonRect.right) distanceX = + resistanceScrollByX(mImgRect.right - mCommonRect.right, distanceX) + } + mTranslateX -= distanceX.toInt() + mAnimMatrix.postTranslate(-distanceX, 0f) + hasOverTranslate = true + } + if (canScrollVerticallySelf(distanceY)) { + if (distanceY < 0 && mImgRect.top - distanceY > mWidgetRect.top) distanceY = + mImgRect.top + if (distanceY > 0 && mImgRect.bottom - distanceY < mWidgetRect.bottom) distanceY = + mImgRect.bottom - mWidgetRect.bottom + mAnimMatrix.postTranslate(0f, -distanceY) + mTranslateY -= distanceY.toInt() + } else if (imgLargeHeight || hasOverTranslate || hasMultiTouch) { + checkRect() + if (!hasMultiTouch) { + if (distanceY < 0 && mImgRect.top - distanceY > mCommonRect.top) distanceY = + resistanceScrollByY(mImgRect.top - mCommonRect.top, distanceY) + if (distanceY > 0 && mImgRect.bottom - distanceY < mCommonRect.bottom) distanceY = + resistanceScrollByY(mImgRect.bottom - mCommonRect.bottom, distanceY) + } + mAnimMatrix.postTranslate(0f, -distanceY) + mTranslateY -= distanceY.toInt() + hasOverTranslate = true + } + executeTranslate() + return true + } + + override fun onSingleTapUp(e: MotionEvent): Boolean { + postDelayed(mClickRunnable, 250) + return false + } + + override fun onDoubleTap(e: MotionEvent): Boolean { + mTranslate.stop() + var from = 1f + var to = 1f + val imgCx = mImgRect.left + mImgRect.width() / 2 + val imgCy = mImgRect.top + mImgRect.height() / 2 + mScaleCenter[imgCx] = imgCy + mRotateCenter[imgCx] = imgCy + mTranslateX = 0 + mTranslateY = 0 + if (isZoonUp) { + from = mScale + to = 1f + } else { + from = mScale + to = mMaxScale + mScaleCenter[e.x] = e.y + } + mTmpMatrix.reset() + mTmpMatrix.postTranslate(-mBaseRect.left, -mBaseRect.top) + mTmpMatrix.postTranslate(mRotateCenter.x, mRotateCenter.y) + mTmpMatrix.postTranslate(-mHalfBaseRectWidth, -mHalfBaseRectHeight) + mTmpMatrix.postRotate(mDegrees, mRotateCenter.x, mRotateCenter.y) + mTmpMatrix.postScale(to, to, mScaleCenter.x, mScaleCenter.y) + mTmpMatrix.postTranslate(mTranslateX.toFloat(), mTranslateY.toFloat()) + mTmpMatrix.mapRect(mTmpRect, mBaseRect) + doTranslateReset(mTmpRect) + isZoonUp = !isZoonUp + mTranslate.withScale(from, to) + mTranslate.start() + return false + } + } + + fun canScrollHorizontallySelf(direction: Float): Boolean { + if (mImgRect.width() <= mWidgetRect.width()) + return false + if (direction < 0 && mImgRect.left.roundToInt() - direction >= mWidgetRect.left) + return false + return !(direction > 0 && mImgRect.right.roundToInt() - direction <= mWidgetRect.right) + } + + fun canScrollVerticallySelf(direction: Float): Boolean { + if (mImgRect.height() <= mWidgetRect.height()) + return false + if (direction < 0 && mImgRect.top.roundToInt() - direction >= mWidgetRect.top) + return false + return !(direction > 0 && mImgRect.bottom.roundToInt() - direction <= mWidgetRect.bottom) + } + + override fun canScrollHorizontally(direction: Int): Boolean { + return if (hasMultiTouch) true else canScrollHorizontallySelf(direction.toFloat()) + } + + override fun canScrollVertically(direction: Int): Boolean { + return if (hasMultiTouch) true else canScrollVerticallySelf(direction.toFloat()) + } + + private inner class InterpolatorProxy : Interpolator { + private var mTarget: Interpolator? + + init { + mTarget = DecelerateInterpolator() + } + + fun setTargetInterpolator(interpolator: Interpolator?) { + mTarget = interpolator + } + + override fun getInterpolation(input: Float): Float { + return mTarget?.getInterpolation(input) ?: input + } + + } + + private inner class Transform internal constructor() : Runnable { + var isRunning = false + var mTranslateScroller: OverScroller + var mFlingScroller: OverScroller + var mScaleScroller: Scroller + var mClipScroller: Scroller + var mRotateScroller: Scroller + var c: ClipCalculate? = null + var mLastFlingX = 0 + var mLastFlingY = 0 + var mLastTranslateX = 0 + var mLastTranslateY = 0 + var mClipRect = RectF() + var mInterpolatorProxy = InterpolatorProxy() + + fun setInterpolator(interpolator: Interpolator?) { + mInterpolatorProxy.setTargetInterpolator(interpolator) + } + + init { + val ctx: Context = context + mTranslateScroller = OverScroller(ctx, mInterpolatorProxy) + mScaleScroller = Scroller(ctx, mInterpolatorProxy) + mFlingScroller = OverScroller(ctx, mInterpolatorProxy) + mClipScroller = Scroller(ctx, mInterpolatorProxy) + mRotateScroller = Scroller(ctx, mInterpolatorProxy) + } + + fun withTranslate(startX: Int, startY: Int, deltaX: Int, deltaY: Int) { + mLastTranslateX = 0 + mLastTranslateY = 0 + mTranslateScroller.startScroll(0, 0, deltaX, deltaY, mAnimaDuring) + } + + fun withScale(form: Float, to: Float) { + mScaleScroller.startScroll( + (form * 10000).toInt(), + 0, + ((to - form) * 10000).toInt(), + 0, + mAnimaDuring + ) + } + + fun withClip( + fromX: Float, + fromY: Float, + deltaX: Float, + deltaY: Float, + d: Int, + c: ClipCalculate? + ) { + mClipScroller.startScroll( + (fromX * 10000).toInt(), + (fromY * 10000).toInt(), + (deltaX * 10000).toInt(), + (deltaY * 10000).toInt(), + d + ) + this.c = c + } + + fun withRotate(fromDegrees: Int, toDegrees: Int) { + mRotateScroller.startScroll(fromDegrees, 0, toDegrees - fromDegrees, 0, mAnimaDuring) + } + + fun withRotate(fromDegrees: Int, toDegrees: Int, during: Int) { + mRotateScroller.startScroll(fromDegrees, 0, toDegrees - fromDegrees, 0, during) + } + + fun withFling(velocityX: Float, velocityY: Float) { + mLastFlingX = if (velocityX < 0) Int.MAX_VALUE else 0 + var distanceX = + (if (velocityX > 0) abs(mImgRect.left) else mImgRect.right - mWidgetRect.right).toInt() + distanceX = if (velocityX < 0) Int.MAX_VALUE - distanceX else distanceX + var minX = if (velocityX < 0) distanceX else 0 + var maxX = if (velocityX < 0) Int.MAX_VALUE else distanceX + val overX = if (velocityX < 0) Int.MAX_VALUE - minX else distanceX + mLastFlingY = if (velocityY < 0) Int.MAX_VALUE else 0 + var distanceY = + (if (velocityY > 0) abs(mImgRect.top) else mImgRect.bottom - mWidgetRect.bottom).toInt() + distanceY = if (velocityY < 0) Int.MAX_VALUE - distanceY else distanceY + var minY = if (velocityY < 0) distanceY else 0 + var maxY = if (velocityY < 0) Int.MAX_VALUE else distanceY + val overY = if (velocityY < 0) Int.MAX_VALUE - minY else distanceY + if (velocityX == 0f) { + maxX = 0 + minX = 0 + } + if (velocityY == 0f) { + maxY = 0 + minY = 0 + } + mFlingScroller.fling( + mLastFlingX, + mLastFlingY, + velocityX.toInt(), + velocityY.toInt(), + minX, + maxX, + minY, + maxY, + if (abs(overX) < MAX_FLING_OVER_SCROLL * 2) 0 else MAX_FLING_OVER_SCROLL, + if (abs(overY) < MAX_FLING_OVER_SCROLL * 2) 0 else MAX_FLING_OVER_SCROLL + ) + } + + fun start() { + isRunning = true + postExecute() + } + + fun stop() { + removeCallbacks(this) + mTranslateScroller.abortAnimation() + mScaleScroller.abortAnimation() + mFlingScroller.abortAnimation() + mRotateScroller.abortAnimation() + isRunning = false + } + + override fun run() { + + // if (!isRuning) return; + var endAnima = true + if (mScaleScroller.computeScrollOffset()) { + mScale = mScaleScroller.currX / 10000f + endAnima = false + } + if (mTranslateScroller.computeScrollOffset()) { + val tx = mTranslateScroller.currX - mLastTranslateX + val ty = mTranslateScroller.currY - mLastTranslateY + mTranslateX += tx + mTranslateY += ty + mLastTranslateX = mTranslateScroller.currX + mLastTranslateY = mTranslateScroller.currY + endAnima = false + } + if (mFlingScroller.computeScrollOffset()) { + val x = mFlingScroller.currX - mLastFlingX + val y = mFlingScroller.currY - mLastFlingY + mLastFlingX = mFlingScroller.currX + mLastFlingY = mFlingScroller.currY + mTranslateX += x + mTranslateY += y + endAnima = false + } + if (mRotateScroller.computeScrollOffset()) { + mDegrees = mRotateScroller.currX.toFloat() + endAnima = false + } + if (mClipScroller.computeScrollOffset() || mClip != null) { + val sx = mClipScroller.currX / 10000f + val sy = mClipScroller.currY / 10000f + mTmpMatrix.setScale( + sx, + sy, + (mImgRect.left + mImgRect.right) / 2, + c!!.calculateTop() + ) + mTmpMatrix.mapRect(mClipRect, mImgRect) + if (sx == 1f) { + mClipRect.left = mWidgetRect.left + mClipRect.right = mWidgetRect.right + } + if (sy == 1f) { + mClipRect.top = mWidgetRect.top + mClipRect.bottom = mWidgetRect.bottom + } + mClip = mClipRect + } + if (!endAnima) { + applyAnima() + postExecute() + } else { + isRunning = false + + // 修复动画结束后边距有些空隙， + var needFix = false + if (imgLargeWidth) { + if (mImgRect.left > 0) { + mTranslateX -= mImgRect.left.toInt() + } else if (mImgRect.right < mWidgetRect.width()) { + mTranslateX -= (mWidgetRect.width() - mImgRect.right).toInt() + } + needFix = true + } + if (imgLargeHeight) { + if (mImgRect.top > 0) { + mTranslateY -= mImgRect.top.toInt() + } else if (mImgRect.bottom < mWidgetRect.height()) { + mTranslateY -= (mWidgetRect.height() - mImgRect.bottom).toInt() + } + needFix = true + } + if (needFix) { + applyAnima() + } + invalidate() + mCompleteCallBack?.let { + it.run() + mCompleteCallBack = null + } + } + } + + private fun applyAnima() { + mAnimMatrix.reset() + mAnimMatrix.postTranslate(-mBaseRect.left, -mBaseRect.top) + mAnimMatrix.postTranslate(mRotateCenter.x, mRotateCenter.y) + mAnimMatrix.postTranslate(-mHalfBaseRectWidth, -mHalfBaseRectHeight) + mAnimMatrix.postRotate(mDegrees, mRotateCenter.x, mRotateCenter.y) + mAnimMatrix.postScale(mScale, mScale, mScaleCenter.x, mScaleCenter.y) + mAnimMatrix.postTranslate(mTranslateX.toFloat(), mTranslateY.toFloat()) + executeTranslate() + } + + private fun postExecute() { + if (isRunning) post(this) + } + + } + + fun getInfo(): Info { + val rect = RectF() + val p = IntArray(2) + getLocation(this, p) + rect[p[0] + mImgRect.left, p[1] + mImgRect.top, p[0] + mImgRect.right] = + p[1] + mImgRect.bottom + return Info( + rect, + mImgRect, + mWidgetRect, + mBaseRect, + mScreenCenter, + mScale, + mDegrees, + mScaleType + ) + } + + fun getImageViewInfo(imgView: ImageView): Info? { + val p = IntArray(2) + getLocation(imgView, p) + val drawable: Drawable = imgView.drawable + val matrix: Matrix = imgView.imageMatrix + val width = getDrawableWidth(drawable) + val height = getDrawableHeight(drawable) + val imgRect = RectF(0F, 0F, width.toFloat(), height.toFloat()) + matrix.mapRect(imgRect) + val rect = RectF( + p[0] + imgRect.left, + p[1] + imgRect.top, + p[0] + imgRect.right, + p[1] + imgRect.bottom + ) + val widgetRect = RectF(0F, 0F, imgView.width.toFloat(), imgView.height.toFloat()) + val baseRect = RectF(widgetRect) + val screenCenter = PointF(widgetRect.width() / 2, widgetRect.height() / 2) + return Info( + rect, + imgRect, + widgetRect, + baseRect, + screenCenter, + 1F, + 0F, + imgView.scaleType + ) + } + + private fun getLocation(target: View, position: IntArray) { + position[0] += target.left + position[1] += target.top + var viewParent: ViewParent = target.parent + while (viewParent is View) { + val view: View = viewParent + if (view.id == R.id.content) return + position[0] -= view.scrollX + position[1] -= view.scrollY + position[0] += view.left + position[1] += view.top + viewParent = view.parent + } + position[0] = (position[0] + 0.5f).toInt() + position[1] = (position[1] + 0.5f).toInt() + } + + private fun reset() { + mAnimMatrix.reset() + executeTranslate() + mScale = 1f + mTranslateX = 0 + mTranslateY = 0 + } + + interface ClipCalculate { + fun calculateTop(): Float + } + + inner class START : ClipCalculate { + override fun calculateTop(): Float { + return mImgRect.top + } + } + + inner class END : ClipCalculate { + override fun calculateTop(): Float { + return mImgRect.bottom + } + } + + inner class OTHER : ClipCalculate { + override fun calculateTop(): Float { + return (mImgRect.top + mImgRect.bottom) / 2 + } + } + + /** + * 在PhotoView内部还没有图片的时候同样可以调用该方法 + * + * + * 此时并不会播放动画，当给PhotoView设置图片后会自动播放动画。 + * + * + * 若等待时间过长也没有给控件设置图片，则会忽略该动画，若要再次播放动画则需要重新调用该方法 + * (等待的时间默认500毫秒，可以通过setMaxAnimFromWaiteTime(int)设置最大等待时间) + */ + fun animaFrom(info: Info) { + if (isInit) { + reset() + val mine = getInfo() + val scaleX = info.mImgRect.width() / mine.mImgRect.width() + val scaleY = info.mImgRect.height() / mine.mImgRect.height() + val scale = if (scaleX < scaleY) scaleX else scaleY + val ocx = info.mRect.left + info.mRect.width() / 2 + val ocy = info.mRect.top + info.mRect.height() / 2 + val mcx = mine.mRect.left + mine.mRect.width() / 2 + val mcy = mine.mRect.top + mine.mRect.height() / 2 + mAnimMatrix.reset() + // mAnimaMatrix.postTranslate(-mBaseRect.left, -mBaseRect.top); + mAnimMatrix.postTranslate(ocx - mcx, ocy - mcy) + mAnimMatrix.postScale(scale, scale, ocx, ocy) + mAnimMatrix.postRotate(info.mDegrees, ocx, ocy) + executeTranslate() + mScaleCenter[ocx] = ocy + mRotateCenter[ocx] = ocy + mTranslate.withTranslate(0, 0, (-(ocx - mcx)).toInt(), (-(ocy - mcy)).toInt()) + mTranslate.withScale(scale, 1F) + mTranslate.withRotate(info.mDegrees.toInt(), 0) + if (info.mWidgetRect.width() < info.mImgRect.width() || info.mWidgetRect.height() < info.mImgRect.height()) { + var clipX = info.mWidgetRect.width() / info.mImgRect.width() + var clipY = info.mWidgetRect.height() / info.mImgRect.height() + clipX = if (clipX > 1) 1F else clipX + clipY = if (clipY > 1) 1F else clipY + val c = + if (info.mScaleType == ScaleType.FIT_START) START() else if (info.mScaleType == ScaleType.FIT_END) END() else OTHER() + mTranslate.withClip(clipX, clipY, 1 - clipX, 1 - clipY, mAnimaDuring / 3, c) + mTmpMatrix.setScale( + clipX, + clipY, + (mImgRect.left + mImgRect.right) / 2, + c.calculateTop() + ) + mTmpMatrix.mapRect(mTranslate.mClipRect, mImgRect) + mClip = mTranslate.mClipRect + } + mTranslate.start() + } else { + mFromInfo = info + mInfoTime = System.currentTimeMillis() + } + } + + fun animaTo( + info: Info, + completeCallBack: Runnable + ) { + if (isInit) { + mTranslate.stop() + mTranslateX = 0 + mTranslateY = 0 + val tcx = info.mRect.left + info.mRect.width() / 2 + val tcy = info.mRect.top + info.mRect.height() / 2 + mScaleCenter[mImgRect.left + mImgRect.width() / 2] = + mImgRect.top + mImgRect.height() / 2 + mRotateCenter.set(mScaleCenter) + + // 将图片旋转回正常位置，用以计算 + mAnimMatrix.postRotate(-mDegrees, mScaleCenter.x, mScaleCenter.y) + mAnimMatrix.mapRect(mImgRect, mBaseRect) + + // 缩放 + val scaleX = info.mImgRect.width() / mBaseRect.width() + val scaleY = info.mImgRect.height() / mBaseRect.height() + val scale = if (scaleX > scaleY) scaleX else scaleY + mAnimMatrix.postRotate(mDegrees, mScaleCenter.x, mScaleCenter.y) + mAnimMatrix.mapRect(mImgRect, mBaseRect) + mDegrees = mDegrees % 360 + mTranslate.withTranslate( + 0, + 0, + (tcx - mScaleCenter.x).toInt(), + (tcy - mScaleCenter.y).toInt() + ) + mTranslate.withScale(mScale, scale) + mTranslate.withRotate(mDegrees.toInt(), info.mDegrees.toInt(), mAnimaDuring * 2 / 3) + if (info.mWidgetRect.width() < info.mRect.width() || info.mWidgetRect.height() < info.mRect.height()) { + var clipX = info.mWidgetRect.width() / info.mRect.width() + var clipY = info.mWidgetRect.height() / info.mRect.height() + clipX = if (clipX > 1) 1F else clipX + clipY = if (clipY > 1) 1F else clipY + val cx = clipX + val cy = clipY + val c = + if (info.mScaleType == ScaleType.FIT_START) START() else if (info.mScaleType == ScaleType.FIT_END) END() else OTHER() + postDelayed( + { mTranslate.withClip(1F, 1F, -1 + cx, -1 + cy, mAnimaDuring / 2, c) }, + mAnimaDuring / 2.toLong() + ) + } + mCompleteCallBack = completeCallBack + mTranslate.start() + } + } + + fun rotate(degrees: Float) { + mDegrees += degrees + val centerX = (mWidgetRect.left + mWidgetRect.width() / 2).toInt() + val centerY = (mWidgetRect.top + mWidgetRect.height() / 2).toInt() + mAnimMatrix.postRotate(degrees, centerX.toFloat(), centerY.toFloat()) + executeTranslate() + } + +} \ No newline at end of file diff --git a/app/src/main/java/io/legado/app/ui/widget/image/photo/Info.kt b/app/src/main/java/io/legado/app/ui/widget/image/photo/Info.kt new file mode 100644 index 000000000..abd6f9080 --- /dev/null +++ b/app/src/main/java/io/legado/app/ui/widget/image/photo/Info.kt @@ -0,0 +1,48 @@ +package io.legado.app.ui.widget.image.photo + +import android.graphics.PointF + +import android.graphics.RectF +import android.widget.ImageView + + +class Info( + rect: RectF, + img: RectF, + widget: RectF, + base: RectF, + screenCenter: PointF, + scale: Float, + degrees: Float, + scaleType: ImageView.ScaleType? +) { + // 内部图片在整个手机界面的位置 + var mRect = RectF() + + // 控件在窗口的位置 + var mImgRect = RectF() + + var mWidgetRect = RectF() + + var mBaseRect = RectF() + + var mScreenCenter = PointF() + + var mScale = 0f + + var mDegrees = 0f + + var mScaleType: ImageView.ScaleType? = null + + init { + mRect.set(rect) + mImgRect.set(img) + mWidgetRect.set(widget) + mScale = scale + mScaleType = scaleType + mDegrees = degrees + mBaseRect.set(base) + mScreenCenter.set(screenCenter) + } + +} \ No newline at end of file diff --git a/app/src/main/java/io/legado/app/ui/widget/image/photo/RotateGestureDetector.kt b/app/src/main/java/io/legado/app/ui/widget/image/photo/RotateGestureDetector.kt new file mode 100644 index 000000000..e8d6ebf61 --- /dev/null +++ b/app/src/main/java/io/legado/app/ui/widget/image/photo/RotateGestureDetector.kt @@ -0,0 +1,56 @@ +package io.legado.app.ui.widget.image.photo + +import android.view.MotionEvent +import kotlin.math.abs +import kotlin.math.atan + +class RotateGestureDetector(l: OnRotateListener) { + + private val MAX_DEGREES_STEP = 120 + + private val mListener: OnRotateListener? = null + + private var mPrevSlope = 0f + private var mCurrSlope = 0f + + private val x1 = 0f + private val y1 = 0f + private val x2 = 0f + private val y2 = 0f + + fun onTouchEvent(event: MotionEvent) { + + when (event.actionMasked) { + MotionEvent.ACTION_POINTER_DOWN, + MotionEvent.ACTION_POINTER_UP -> { + if (event.pointerCount == 2) mPrevSlope = caculateSlope(event) + } + MotionEvent.ACTION_MOVE -> if (event.pointerCount > 1) { + mCurrSlope = caculateSlope(event) + + val currDegrees = Math.toDegrees(atan(mCurrSlope.toDouble())); + val prevDegrees = Math.toDegrees(atan(mPrevSlope.toDouble())); + + val deltaSlope = currDegrees - prevDegrees; + + if (abs(deltaSlope) <= MAX_DEGREES_STEP) { + mListener?.onRotate(deltaSlope.toFloat(), (x2 + x1) / 2, (y2 + y1) / 2); + } + mPrevSlope = mCurrSlope; + } + } + + } + + private fun caculateSlope(event: MotionEvent): Float { + val x1 = event.getX(0); + val y1 = event.getY(0); + val x2 = event.getX(1); + val y2 = event.getY(1); + return (y2 - y1) / (x2 - x1); + } +} + +interface OnRotateListener { + fun onRotate(degrees: Float, focusX: Float, focusY: Float) +} \ No newline at end of file diff --git a/app/src/main/res/layout/dialog_photo_view.xml b/app/src/main/res/layout/dialog_photo_view.xml new file mode 100644 index 000000000..410ac99e5 --- /dev/null +++ b/app/src/main/res/layout/dialog_photo_view.xml @@ -0,0 +1,15 @@ + + + + + + + +