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pull/32/head
kunfei 5 years ago
parent 42fe4ffee5
commit 190437b3e0
1 changed files with 45 additions and 43 deletions
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  1. 88
      app/src/main/java/io/legado/app/ui/widget/recycler/scroller/FastScroller.kt

88
app/src/main/java/io/legado/app/ui/widget/recycler/scroller/FastScroller.kt
Unescape View File

@ -47,10 +47,10 @@ class FastScroller : LinearLayout {
private var mScrollbarAnimator: ViewPropertyAnimator? = null private var mScrollbarAnimator: ViewPropertyAnimator? = null
private var mBubbleAnimator: ViewPropertyAnimator? = null private var mBubbleAnimator: ViewPropertyAnimator? = null
private var mRecyclerView: RecyclerView? = null private var mRecyclerView: RecyclerView? = null
private var mBubbleView: TextView? = null private lateinit var mBubbleView: TextView
private var mHandleView: ImageView? = null private lateinit var mHandleView: ImageView
private var mTrackView: ImageView? = null private lateinit var mTrackView: ImageView
private var mScrollbar: View? = null private lateinit var mScrollbar: View
private var mBubbleImage: Drawable? = null private var mBubbleImage: Drawable? = null
private var mHandleImage: Drawable? = null private var mHandleImage: Drawable? = null
private var mTrackImage: Drawable? = null private var mTrackImage: Drawable? = null
@ -59,7 +59,7 @@ class FastScroller : LinearLayout {
private val mScrollListener = object : RecyclerView.OnScrollListener() { private val mScrollListener = object : RecyclerView.OnScrollListener() {
override fun onScrolled(recyclerView: RecyclerView, dx: Int, dy: Int) { override fun onScrolled(recyclerView: RecyclerView, dx: Int, dy: Int) {
if (!mHandleView!!.isSelected && isEnabled) { if (!mHandleView.isSelected && isEnabled) {
setViewPositions(getScrollProportion(recyclerView)) setViewPositions(getScrollProportion(recyclerView))
} }
} }
@ -75,7 +75,7 @@ class FastScroller : LinearLayout {
showScrollbar() showScrollbar()
} }
} }
RecyclerView.SCROLL_STATE_IDLE -> if (mFadeScrollbar && !mHandleView!!.isSelected) { RecyclerView.SCROLL_STATE_IDLE -> if (mFadeScrollbar && !mHandleView.isSelected) {
handler.postDelayed(mScrollbarHider, sScrollbarHideDelay.toLong()) handler.postDelayed(mScrollbarHider, sScrollbarHideDelay.toLong())
} }
} }
@ -175,7 +175,7 @@ class FastScroller : LinearLayout {
*/ */
fun setFadeScrollbar(fadeScrollbar: Boolean) { fun setFadeScrollbar(fadeScrollbar: Boolean) {
mFadeScrollbar = fadeScrollbar mFadeScrollbar = fadeScrollbar
mScrollbar!!.visibility = if (fadeScrollbar) View.GONE else View.VISIBLE mScrollbar.visibility = if (fadeScrollbar) View.GONE else View.VISIBLE
} }
/** /**
@ -193,7 +193,7 @@ class FastScroller : LinearLayout {
* @param visible True to show scroll track, false to hide * @param visible True to show scroll track, false to hide
*/ */
fun setTrackVisible(visible: Boolean) { fun setTrackVisible(visible: Boolean) {
mTrackView!!.visibility = if (visible) View.VISIBLE else View.GONE mTrackView.visibility = if (visible) View.VISIBLE else View.GONE
} }
/** /**
@ -209,7 +209,7 @@ class FastScroller : LinearLayout {
} }
} }
DrawableCompat.setTint(mTrackImage!!, color) DrawableCompat.setTint(mTrackImage!!, color)
mTrackView!!.setImageDrawable(mTrackImage) mTrackView.setImageDrawable(mTrackImage)
} }
/** /**
@ -226,7 +226,7 @@ class FastScroller : LinearLayout {
} }
} }
DrawableCompat.setTint(mHandleImage!!, mHandleColor) DrawableCompat.setTint(mHandleImage!!, mHandleColor)
mHandleView!!.setImageDrawable(mHandleImage) mHandleView.setImageDrawable(mHandleImage)
} }
/** /**
@ -243,7 +243,7 @@ class FastScroller : LinearLayout {
} }
} }
DrawableCompat.setTint(mBubbleImage!!, mBubbleColor) DrawableCompat.setTint(mBubbleImage!!, mBubbleColor)
mBubbleView!!.background = mBubbleImage mBubbleView.background = mBubbleImage
} }
/** /**
@ -252,7 +252,7 @@ class FastScroller : LinearLayout {
* @param color The text color for the index bubble * @param color The text color for the index bubble
*/ */
fun setBubbleTextColor(@ColorInt color: Int) { fun setBubbleTextColor(@ColorInt color: Int) {
mBubbleView!!.setTextColor(color) mBubbleView.setTextColor(color)
} }
/** /**
@ -273,7 +273,7 @@ class FastScroller : LinearLayout {
override fun onTouchEvent(event: MotionEvent): Boolean { override fun onTouchEvent(event: MotionEvent): Boolean {
when (event.action) { when (event.action) {
MotionEvent.ACTION_DOWN -> { MotionEvent.ACTION_DOWN -> {
if (event.x < mHandleView!!.x - ViewCompat.getPaddingStart(mHandleView!!)) { if (event.x < mHandleView.x - ViewCompat.getPaddingStart(mHandleView)) {
return false return false
} }
requestDisallowInterceptTouchEvent(true) requestDisallowInterceptTouchEvent(true)
@ -326,8 +326,8 @@ class FastScroller : LinearLayout {
if (mRecyclerView != null && mRecyclerView!!.adapter != null) { if (mRecyclerView != null && mRecyclerView!!.adapter != null) {
val itemCount = mRecyclerView!!.adapter!!.itemCount val itemCount = mRecyclerView!!.adapter!!.itemCount
val proportion: Float = when { val proportion: Float = when {
mHandleView!!.y == 0f -> 0f mHandleView.y == 0f -> 0f
mHandleView!!.y + mHandleHeight >= mViewHeight - sTrackSnapRange -> 1f mHandleView.y + mHandleHeight >= mViewHeight - sTrackSnapRange -> 1f
else -> y / mViewHeight.toFloat() else -> y / mViewHeight.toFloat()
} }
var scrolledItemCount = (proportion * itemCount).roundToInt() var scrolledItemCount = (proportion * itemCount).roundToInt()
@ -337,7 +337,7 @@ class FastScroller : LinearLayout {
val targetPos = getValueInRange(0, itemCount - 1, scrolledItemCount) val targetPos = getValueInRange(0, itemCount - 1, scrolledItemCount)
mRecyclerView!!.layoutManager!!.scrollToPosition(targetPos) mRecyclerView!!.layoutManager!!.scrollToPosition(targetPos)
if (mShowBubble && mSectionIndexer != null) { if (mShowBubble && mSectionIndexer != null) {
mBubbleView!!.text = mSectionIndexer!!.getSectionText(targetPos) mBubbleView.text = mSectionIndexer!!.getSectionText(targetPos)
} }
} }
} }
@ -359,22 +359,22 @@ class FastScroller : LinearLayout {
} }
private fun setViewPositions(y: Float) { private fun setViewPositions(y: Float) {
mBubbleHeight = mBubbleView!!.height mBubbleHeight = mBubbleView.height
mHandleHeight = mHandleView!!.height mHandleHeight = mHandleView.height
val bubbleY = getValueInRange(0, mViewHeight - mBubbleHeight - mHandleHeight / 2, (y - mBubbleHeight).toInt()) val bubbleY = getValueInRange(0, mViewHeight - mBubbleHeight - mHandleHeight / 2, (y - mBubbleHeight).toInt())
val handleY = getValueInRange(0, mViewHeight - mHandleHeight, (y - mHandleHeight / 2).toInt()) val handleY = getValueInRange(0, mViewHeight - mHandleHeight, (y - mHandleHeight / 2).toInt())
if (mShowBubble) { if (mShowBubble) {
mBubbleView!!.y = bubbleY.toFloat() mBubbleView.y = bubbleY.toFloat()
} }
mHandleView!!.y = handleY.toFloat() mHandleView.y = handleY.toFloat()
} }
private fun updateViewHeights() { private fun updateViewHeights() {
val measureSpec = MeasureSpec.makeMeasureSpec(MeasureSpec.UNSPECIFIED, MeasureSpec.UNSPECIFIED) val measureSpec = MeasureSpec.makeMeasureSpec(MeasureSpec.UNSPECIFIED, MeasureSpec.UNSPECIFIED)
mBubbleView!!.measure(measureSpec, measureSpec) mBubbleView.measure(measureSpec, measureSpec)
mBubbleHeight = mBubbleView!!.measuredHeight mBubbleHeight = mBubbleView.measuredHeight
mHandleView!!.measure(measureSpec, measureSpec) mHandleView.measure(measureSpec, measureSpec)
mHandleHeight = mHandleView!!.measuredHeight mHandleHeight = mHandleView.measuredHeight
} }
private fun isLayoutReversed(layoutManager: RecyclerView.LayoutManager): Boolean { private fun isLayoutReversed(layoutManager: RecyclerView.LayoutManager): Boolean {
@ -396,8 +396,8 @@ class FastScroller : LinearLayout {
private fun showBubble() { private fun showBubble() {
if (!isViewVisible(mBubbleView)) { if (!isViewVisible(mBubbleView)) {
mBubbleView!!.visibility = View.VISIBLE mBubbleView.visibility = View.VISIBLE
mBubbleAnimator = mBubbleView!!.animate().alpha(1f) mBubbleAnimator = mBubbleView.animate().alpha(1f)
.setDuration(sBubbleAnimDuration.toLong()) .setDuration(sBubbleAnimDuration.toLong())
.setListener(object : AnimatorListenerAdapter() { .setListener(object : AnimatorListenerAdapter() {
@ -408,18 +408,18 @@ class FastScroller : LinearLayout {
private fun hideBubble() { private fun hideBubble() {
if (isViewVisible(mBubbleView)) { if (isViewVisible(mBubbleView)) {
mBubbleAnimator = mBubbleView!!.animate().alpha(0f) mBubbleAnimator = mBubbleView.animate().alpha(0f)
.setDuration(sBubbleAnimDuration.toLong()) .setDuration(sBubbleAnimDuration.toLong())
.setListener(object : AnimatorListenerAdapter() { .setListener(object : AnimatorListenerAdapter() {
override fun onAnimationEnd(animation: Animator) { override fun onAnimationEnd(animation: Animator) {
super.onAnimationEnd(animation) super.onAnimationEnd(animation)
mBubbleView!!.visibility = View.GONE mBubbleView.visibility = View.GONE
mBubbleAnimator = null mBubbleAnimator = null
} }
override fun onAnimationCancel(animation: Animator) { override fun onAnimationCancel(animation: Animator) {
super.onAnimationCancel(animation) super.onAnimationCancel(animation)
mBubbleView!!.visibility = View.GONE mBubbleView.visibility = View.GONE
mBubbleAnimator = null mBubbleAnimator = null
} }
}) })
@ -427,40 +427,42 @@ class FastScroller : LinearLayout {
} }
private fun showScrollbar() { private fun showScrollbar() {
if (mRecyclerView!!.computeVerticalScrollRange() - mViewHeight > 0) { mRecyclerView?.let { mRecyclerView ->
val transX = resources.getDimensionPixelSize(R.dimen.fastscroll_scrollbar_padding_end).toFloat() if (mRecyclerView.computeVerticalScrollRange() - mViewHeight > 0) {
mScrollbar!!.translationX = transX val transX = resources.getDimensionPixelSize(R.dimen.fastscroll_scrollbar_padding_end).toFloat()
mScrollbar!!.visibility = View.VISIBLE mScrollbar.translationX = transX
mScrollbarAnimator = mScrollbar!!.animate().translationX(0f).alpha(1f) mScrollbar.visibility = View.VISIBLE
.setDuration(sScrollbarAnimDuration.toLong()) mScrollbarAnimator = mScrollbar.animate().translationX(0f).alpha(1f)
.setListener(object : AnimatorListenerAdapter() { .setDuration(sScrollbarAnimDuration.toLong())
.setListener(object : AnimatorListenerAdapter() {
// adapter required for new alpha value to stick
}) // adapter required for new alpha value to stick
})
}
} }
} }
private fun hideScrollbar() { private fun hideScrollbar() {
val transX = resources.getDimensionPixelSize(R.dimen.fastscroll_scrollbar_padding_end).toFloat() val transX = resources.getDimensionPixelSize(R.dimen.fastscroll_scrollbar_padding_end).toFloat()
mScrollbarAnimator = mScrollbar!!.animate().translationX(transX).alpha(0f) mScrollbarAnimator = mScrollbar.animate().translationX(transX).alpha(0f)
.setDuration(sScrollbarAnimDuration.toLong()) .setDuration(sScrollbarAnimDuration.toLong())
.setListener(object : AnimatorListenerAdapter() { .setListener(object : AnimatorListenerAdapter() {
override fun onAnimationEnd(animation: Animator) { override fun onAnimationEnd(animation: Animator) {
super.onAnimationEnd(animation) super.onAnimationEnd(animation)
mScrollbar!!.visibility = View.GONE mScrollbar.visibility = View.GONE
mScrollbarAnimator = null mScrollbarAnimator = null
} }
override fun onAnimationCancel(animation: Animator) { override fun onAnimationCancel(animation: Animator) {
super.onAnimationCancel(animation) super.onAnimationCancel(animation)
mScrollbar!!.visibility = View.GONE mScrollbar.visibility = View.GONE
mScrollbarAnimator = null mScrollbarAnimator = null
} }
}) })
} }
private fun setHandleSelected(selected: Boolean) { private fun setHandleSelected(selected: Boolean) {
mHandleView!!.isSelected = selected mHandleView.isSelected = selected
DrawableCompat.setTint(mHandleImage!!, if (selected) mBubbleColor else mHandleColor) DrawableCompat.setTint(mHandleImage!!, if (selected) mBubbleColor else mHandleColor)
} }

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