Skip to content

Commit

Permalink
詳細表示画面が５行程度で省略されてしまう現象を対応。（暫定）
Browse files Browse the repository at this point in the history
  • Loading branch information
daigorian committed Jul 5, 2021
1 parent c3b98ef commit 999f59f
Showing 1 changed file with 191 additions and 2 deletions.
193 changes: 191 additions & 2 deletions app/src/main/java/com/daigorian/epcltvapp/DetailsDescriptionPresenter.kt
View file
Original file line number Diff line number Diff line change
@@ -1,12 +1,189 @@
package com.daigorian.epcltvapp

import android.graphics.Paint
import android.text.TextUtils
import android.util.Log
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.view.ViewTreeObserver
import android.widget.TextView
import androidx.leanback.widget.AbstractDetailsDescriptionPresenter
import androidx.leanback.widget.Presenter
import com.daigorian.epcltvapp.epgstationcaller.*
import com.daigorian.epcltvapp.epgstationv2caller.*
import kotlin.math.floor

class DetailsDescriptionPresenter : AbstractDetailsDescriptionPresenter() {
class DetailsDescriptionPresenter : Presenter() {
/**
* The ViewHolder for the [DetailsDescriptionPresenter].
*/
companion object {
private const val TAG = "DetailsDescriptionPres."
class ViewHolder(view: View) : Presenter.ViewHolder(view) {
val title: TextView
val subtitle: TextView
val body: TextView
val mTitleMargin: Int
val mUnderTitleBaselineMargin: Int
val mUnderSubtitleBaselineMargin: Int
val mTitleLineSpacing: Int
val mBodyLineSpacing: Int
val mBodyMaxLines: Int
val mBodyMinLines: Int
val mTitleFontMetricsInt: Paint.FontMetricsInt
val mSubtitleFontMetricsInt: Paint.FontMetricsInt
val mBodyFontMetricsInt: Paint.FontMetricsInt
val mTitleMaxLines: Int
private var mPreDrawListener: ViewTreeObserver.OnPreDrawListener? = null
fun addPreDrawListener() {
if (mPreDrawListener != null) {
return
}
mPreDrawListener = ViewTreeObserver.OnPreDrawListener {
/*
if ((subtitle.visibility == View.VISIBLE
) && (subtitle.top > view.height
) && (title.lineCount > 1)
) {
title.maxLines = title.lineCount - 1
return@OnPreDrawListener false
}
val titleLines = title.lineCount
val maxLines = if (titleLines > 1) mBodyMinLines else mBodyMaxLines
if (body.maxLines != maxLines) {
body.maxLines = maxLines
false
} else {
removePreDrawListener()
true
}
*/
//小細工なしにとりあえず出せるだけ出してもらう。
title.maxLines = Int.MAX_VALUE
subtitle.maxLines = Int.MAX_VALUE
removePreDrawListener()
true
}
view.viewTreeObserver.addOnPreDrawListener(mPreDrawListener)
}

override fun onBindDescription(
fun removePreDrawListener() {
if (mPreDrawListener != null) {
view.viewTreeObserver.removeOnPreDrawListener(mPreDrawListener)
mPreDrawListener = null
}
}

private fun getFontMetricsInt(textView: TextView): Paint.FontMetricsInt {
val paint = Paint(Paint.ANTI_ALIAS_FLAG)
paint.textSize = textView.textSize
paint.typeface = textView.typeface
return paint.fontMetricsInt
}

init {
title = view.findViewById<View>(R.id.lb_details_description_title) as TextView
subtitle = view.findViewById<View>(R.id.lb_details_description_subtitle) as TextView
body = view.findViewById<View>(R.id.lb_details_description_body) as TextView
val titleFontMetricsInt = getFontMetricsInt(title)
val titleAscent = view.resources.getDimensionPixelSize(
R.dimen.lb_details_description_title_baseline
)
// Ascent is negative
mTitleMargin = titleAscent + titleFontMetricsInt.ascent
mUnderTitleBaselineMargin = view.resources.getDimensionPixelSize(
R.dimen.lb_details_description_under_title_baseline_margin
)
mUnderSubtitleBaselineMargin = view.resources.getDimensionPixelSize(
R.dimen.lb_details_description_under_subtitle_baseline_margin
)
mTitleLineSpacing = view.resources.getDimensionPixelSize(
R.dimen.lb_details_description_title_line_spacing
)
mBodyLineSpacing = view.resources.getDimensionPixelSize(
R.dimen.lb_details_description_body_line_spacing
)
mBodyMaxLines = view.resources.getInteger(
R.integer.lb_details_description_body_max_lines
)
mBodyMinLines = view.resources.getInteger(
R.integer.lb_details_description_body_min_lines
)
mTitleMaxLines = title.maxLines
mTitleFontMetricsInt = getFontMetricsInt(title)
mSubtitleFontMetricsInt = getFontMetricsInt(subtitle)
mBodyFontMetricsInt = getFontMetricsInt(body)
title.addOnLayoutChangeListener { v, left, top, right, bottom, oldLeft, oldTop, oldRight, oldBottom -> addPreDrawListener() }
}
}
}
override fun onCreateViewHolder(parent: ViewGroup): ViewHolder {
val v = LayoutInflater.from(parent.context)
.inflate(R.layout.lb_details_description, parent, false)
return ViewHolder(v)
}

override fun onBindViewHolder(viewHolder: Presenter.ViewHolder, item: Any) {
val vh = viewHolder as ViewHolder
onBindDescription(vh, item)
var hasTitle = true
if (TextUtils.isEmpty(vh.title.text)) {
vh.title.visibility = View.GONE
hasTitle = false
} else {
vh.title.visibility = View.VISIBLE
vh.title.setLineSpacing(
vh.mTitleLineSpacing - vh.title.lineHeight
+ vh.title.lineSpacingExtra, vh.title.lineSpacingMultiplier
)
vh.title.maxLines = vh.mTitleMaxLines
}
setTopMargin(vh.title, vh.mTitleMargin)
var hasSubtitle = true
if (TextUtils.isEmpty(vh.subtitle.text)) {
vh.subtitle.visibility = View.GONE
hasSubtitle = false
} else {
vh.subtitle.visibility = View.VISIBLE
if (hasTitle) {
setTopMargin(
vh.subtitle, vh.mUnderTitleBaselineMargin
+ vh.mSubtitleFontMetricsInt.ascent - vh.mTitleFontMetricsInt.descent
)
} else {
setTopMargin(vh.subtitle, 0)
}
}
if (TextUtils.isEmpty(vh.body.text)) {
vh.body.visibility = View.GONE
} else {
vh.body.visibility = View.VISIBLE
vh.body.setLineSpacing(
(vh.mBodyLineSpacing - vh.body.lineHeight
+ vh.body.lineSpacingExtra), vh.body.lineSpacingMultiplier
)
if (hasSubtitle) {
setTopMargin(
vh.body, vh.mUnderSubtitleBaselineMargin
+ vh.mBodyFontMetricsInt.ascent - vh.mSubtitleFontMetricsInt.descent
)
} else if (hasTitle) {
setTopMargin(
vh.body, vh.mUnderTitleBaselineMargin
+ vh.mBodyFontMetricsInt.ascent - vh.mTitleFontMetricsInt.descent
)
} else {
setTopMargin(vh.body, 0)
}
}
}

override fun onUnbindViewHolder(viewHolder: Presenter.ViewHolder?) {
//DO Nothing
}

fun onBindDescription(
viewHolder: ViewHolder,
item: Any
) {
Expand All @@ -22,4 +199,16 @@ class DetailsDescriptionPresenter : AbstractDetailsDescriptionPresenter() {
viewHolder.body.text = item.extended
}
}

override fun onViewDetachedFromWindow(holder: Presenter.ViewHolder) {
val vh = holder as ViewHolder
vh.removePreDrawListener()
super.onViewDetachedFromWindow(holder)
}

private fun setTopMargin(textView: TextView, topMargin: Int) {
val lp = textView.layoutParams as ViewGroup.MarginLayoutParams
lp.topMargin = topMargin
textView.layoutParams = lp
}
}

0 comments on commit 999f59f

Please sign in to comment.