Administrator
5 years ago
parent
b4eb0d0958
commit
8b3d956e7e
@ -1,39 +0,0 @@ |
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package io.legado.app.ui.widget.page |
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import android.widget.Scroller |
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import androidx.interpolator.view.animation.FastOutLinearInInterpolator |
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abstract class PageAnimDelegate(protected val pageView: PageView) { |
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protected val scroller: Scroller = Scroller(pageView.context, FastOutLinearInInterpolator()) |
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//起始点 |
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protected var startX: Float = 0.toFloat() |
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protected var startY: Float = 0.toFloat() |
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//触碰点 |
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protected var touchX: Float = 0.toFloat() |
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protected var touchY: Float = 0.toFloat() |
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//上一个触碰点 |
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protected var lastX: Float = 0.toFloat() |
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protected var lastY: Float = 0.toFloat() |
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protected var isRunning = false |
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protected var isStarted = false |
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fun setStartPoint(x: Float, y: Float) { |
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startX = x |
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startY = y |
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lastX = startX |
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lastY = startY |
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} |
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fun setTouchPoint(x: Float, y: Float) { |
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lastX = touchX |
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lastY = touchY |
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touchX = x |
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touchY = y |
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} |
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} |
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@ -0,0 +1,75 @@ |
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package io.legado.app.ui.widget.page.delegate |
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import android.graphics.Canvas |
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import android.graphics.Matrix |
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import android.graphics.drawable.GradientDrawable |
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import io.legado.app.ui.widget.page.PageView |
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class CoverPageDelegate(pageView: PageView) : PageDelegate(pageView) { |
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private val shadowDrawableR: GradientDrawable |
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private val shadowDrawableL: GradientDrawable |
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private val bitmapMatrix = Matrix() |
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init { |
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val shadowColors = intArrayOf(0x66111111, 0x00000000) |
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shadowDrawableR = GradientDrawable( |
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GradientDrawable.Orientation.LEFT_RIGHT, shadowColors |
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) |
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shadowDrawableR.gradientType = GradientDrawable.LINEAR_GRADIENT |
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shadowDrawableL = GradientDrawable( |
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GradientDrawable.Orientation.RIGHT_LEFT, shadowColors |
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) |
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shadowDrawableL.gradientType = GradientDrawable.LINEAR_GRADIENT |
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} |
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override fun onStart() { |
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val distanceX: Float |
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when (direction) { |
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Direction.NEXT -> if (isCancel) { |
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var dis = viewWidth - startX + touchX |
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if (dis > viewWidth) { |
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dis = viewWidth.toFloat() |
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} |
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distanceX = viewWidth - dis |
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} else { |
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distanceX = -(touchX + (viewWidth - startX)) |
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} |
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else -> distanceX = if (isCancel) { |
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-(touchX - startX) |
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} else { |
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viewWidth - (touchX - startX) |
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} |
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} |
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scroller.startScroll(touchX.toInt(), 0, distanceX.toInt(), 0, getDuration(distanceX)) |
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start() |
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} |
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override fun onPerform(canvas: Canvas) { |
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val offsetX = touchX - startX |
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if(offsetX == 0.toFloat()) return |
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val distanceX = if (offsetX > 0) offsetX - viewWidth else offsetX + viewWidth |
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bitmap?.let { |
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bitmapMatrix.setTranslate(distanceX, 0.toFloat()) |
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canvas.drawBitmap(it, bitmapMatrix, null) |
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addShadow(distanceX.toInt(), canvas) |
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} |
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} |
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private fun addShadow(left: Int, canvas: Canvas?) { |
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canvas?.let { |
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if (left < 0) { |
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shadowDrawableR.setBounds(left + viewWidth, 0, left+ viewWidth + 30, viewHeight) |
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shadowDrawableR.draw(it) |
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} else { |
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shadowDrawableL.setBounds(left - 30, 0, left, viewHeight) |
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shadowDrawableL.draw(it) |
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} |
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} |
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} |
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} |
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@ -0,0 +1,247 @@ |
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package io.legado.app.ui.widget.page.delegate |
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import android.graphics.Bitmap |
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import android.graphics.Canvas |
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import android.view.GestureDetector |
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import android.view.MotionEvent |
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import android.view.View |
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import android.widget.Scroller |
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import androidx.interpolator.view.animation.FastOutLinearInInterpolator |
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import io.legado.app.ui.widget.page.PageView |
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import io.legado.app.utils.screenshot |
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import kotlinx.android.synthetic.main.view_book_page.view.* |
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import kotlin.math.abs |
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abstract class PageDelegate(private val pageView: PageView) { |
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//起始点 |
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protected var startX: Float = 0.toFloat() |
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protected var startY: Float = 0.toFloat() |
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//触碰点 |
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protected var touchX: Float = 0.toFloat() |
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protected var touchY: Float = 0.toFloat() |
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protected val view: View |
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get() = pageView.page_panel |
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protected var bitmap: Bitmap? = null |
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protected var viewWidth: Int = pageView.width |
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protected var viewHeight: Int = pageView.height |
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protected val scroller: Scroller by lazy { Scroller(pageView.context, FastOutLinearInInterpolator()) } |
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private val detector: GestureDetector by lazy { GestureDetector(pageView.context, GestureListener()) } |
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private var isMoved = false |
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private var noNext = true |
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//移动方向 |
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var direction = Direction.NONE |
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var isCancel = false |
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var isRunning = false |
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var isStarted = false |
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protected fun setStartPoint(x: Float, y: Float, invalidate: Boolean = true) { |
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startX = x |
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startY = y |
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if (invalidate) { |
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invalidate() |
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} |
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} |
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protected fun setTouchPoint(x: Float, y: Float, invalidate: Boolean = true) { |
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touchX = x |
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touchY = y |
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if (invalidate) { |
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invalidate() |
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} |
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} |
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fun setViewSize(width: Int, height: Int) { |
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viewWidth = width |
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viewHeight = height |
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invalidate() |
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} |
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fun invalidate() { |
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pageView.invalidate() |
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} |
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fun start() { |
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isRunning = true |
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isStarted = true |
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invalidate() |
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} |
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fun stop() { |
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isRunning = false |
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isStarted = false |
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bitmap = null |
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invalidate() |
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} |
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fun scroll() { |
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if (scroller.computeScrollOffset()) { |
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setTouchPoint(scroller.currX.toFloat(), scroller.currY.toFloat()) |
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} else if(isStarted){ |
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setTouchPoint(scroller.finalX.toFloat(), scroller.finalY.toFloat(), false) |
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stop() |
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} |
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} |
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fun abort() { |
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if (!scroller.isFinished) { |
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scroller.abortAnimation() |
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} |
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} |
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fun start(direction: Direction) { |
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if (isStarted) return |
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this.direction = direction |
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if (direction === Direction.NEXT) { |
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val x = viewWidth.toFloat() |
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val y = viewHeight.toFloat() |
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//初始化动画 |
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setStartPoint(x, y, false) |
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//设置点击点 |
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setTouchPoint(x, y, false) |
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//设置方向 |
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val hasNext = pageView.hasNext() |
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if (!hasNext) { |
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return |
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} |
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} else { |
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val x = 0.toFloat() |
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val y = viewHeight.toFloat() |
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//初始化动画 |
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setStartPoint(x, y, false) |
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//设置点击点 |
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setTouchPoint(x, y, false) |
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//设置方向方向 |
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val hashPrev = pageView.hasPrev() |
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if (!hashPrev) { |
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return |
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} |
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} |
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onStart() |
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} |
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fun onTouch(event: MotionEvent): Boolean { |
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if (isMoved && event.action == MotionEvent.ACTION_UP) { |
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// 开启翻页效果 |
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if (!noNext) { |
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onStart() |
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} |
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return true |
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} |
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return detector.onTouchEvent(event) |
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} |
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fun getDuration(distance: Float): Int { |
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val duration = 300 * abs(distance) / viewWidth |
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return duration.toInt() |
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} |
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abstract fun onStart() |
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abstract fun onPerform(canvas: Canvas) |
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enum class Direction { |
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NONE, PREV, NEXT |
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} |
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private inner class GestureListener : GestureDetector.OnGestureListener { |
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override fun onDown(e: MotionEvent): Boolean { |
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abort() |
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//是否移动 |
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isMoved = false |
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//是否存在下一章 |
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noNext = false |
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//是否正在执行动画 |
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isRunning = false |
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//取消 |
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isCancel = false |
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//是下一章还是前一章 |
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direction = Direction.NONE |
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//设置起始位置的触摸点 |
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setStartPoint(e.x, e.y) |
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return true |
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} |
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override fun onShowPress(e: MotionEvent) {} |
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override fun onSingleTapUp(e: MotionEvent): Boolean { |
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val x = e.x |
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val y = e.y |
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direction = if (x > viewWidth / 2) Direction.NEXT else Direction.PREV |
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if (direction == Direction.NEXT) { |
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//判断是否下一页存在 |
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val hasNext = pageView.hasNext() |
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//设置动画方向 |
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if (!hasNext) { |
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return true |
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} |
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} else { |
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val hasPrev = pageView.hasPrev() |
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if (!hasPrev) { |
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return true |
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} |
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} |
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setTouchPoint(x, y) |
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return true |
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} |
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override fun onScroll(e1: MotionEvent, e2: MotionEvent, distanceX: Float, distanceY: Float): Boolean { |
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if (!isMoved && abs(distanceX) > abs(distanceY)) { |
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//上一页或下一页截图，还未处理 |
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bitmap = pageView.screenshot() |
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if (distanceX < 0) { |
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//上一页的参数配置 |
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direction = Direction.PREV |
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//判断是否上一页存在 |
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val hasPrev = pageView.hasPrev() |
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//如果上一页不存在 |
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if (!hasPrev) { |
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noNext = true |
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return true |
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} |
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} else { |
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//进行下一页的配置 |
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direction = Direction.NEXT |
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//判断是否下一页存在 |
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val hasNext = pageView.hasNext() |
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//如果不存在表示没有下一页了 |
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if (!hasNext) { |
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noNext = true |
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return true |
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} |
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} |
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isMoved = true |
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} |
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if (isMoved) { |
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isCancel = if (direction == Direction.NEXT) distanceX < 0 else distanceX > 0 |
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isRunning = true |
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//设置触摸点 |
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setTouchPoint(e2.x, e2.y) |
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} |
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return isMoved |
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} |
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override fun onLongPress(e: MotionEvent) { |
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} |
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override fun onFling(e1: MotionEvent, e2: MotionEvent, velocityX: Float, velocityY: Float): Boolean { |
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return false |
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} |
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} |
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interface PageInterface { |
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fun hasNext(): Boolean |
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fun hasPrev(): Boolean |
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} |
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} |
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