292 lines
10 KiB
Kotlin
292 lines
10 KiB
Kotlin
package jp.juggler.subwaytooter.span
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import android.graphics.Canvas
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import android.graphics.Paint
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import android.graphics.Rect
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import android.graphics.RectF
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import android.graphics.drawable.Drawable
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import android.text.style.ReplacementSpan
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import androidx.annotation.IntRange
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import androidx.collection.LruCache
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import androidx.core.content.ContextCompat
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import jp.juggler.apng.ApngFrames
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import jp.juggler.subwaytooter.App1
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import jp.juggler.subwaytooter.R
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import jp.juggler.subwaytooter.api.entity.TootInstance
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import jp.juggler.subwaytooter.pref.PrefB
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import jp.juggler.subwaytooter.pref.lazyContext
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import jp.juggler.subwaytooter.table.SavedAccount
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import jp.juggler.util.log.LogCategory
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import java.lang.ref.WeakReference
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import kotlin.math.min
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enum class EmojiSizeMode {
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Square,
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Wide,
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}
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fun SavedAccount?.emojiSizeMode(): EmojiSizeMode {
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val ti = this?.let { TootInstance.getCached(it) }
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return when {
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ti == null -> EmojiSizeMode.Square
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ti.isMisskey || !ti.fedibirdCapabilities.isNullOrEmpty() -> EmojiSizeMode.Wide
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else -> EmojiSizeMode.Square
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}
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}
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class NetworkEmojiSpan constructor(
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private val url: String,
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private val sizeMode: EmojiSizeMode,
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private val scale: Float = 1f,
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private val errorDrawableId: Int = R.drawable.outline_broken_image_24,
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) : ReplacementSpan(), AnimatableSpan {
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companion object {
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internal val log = LogCategory("NetworkEmojiSpan")
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private const val scaleRatio = 1.14f
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private const val descentRatio = 0.211f
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// 最大幅
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var maxEmojiWidth = Float.MAX_VALUE
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// ImageWidthCache
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val imageAspectCache = LruCache<String, Float>(1024)
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}
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private val mPaint = Paint().apply { isFilterBitmap = true }
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private val rectSrc = Rect()
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private val rectDst = RectF()
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// フレーム探索結果を格納する構造体を確保しておく
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private val mFrameFindResult = ApngFrames.FindFrameResult()
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private var invalidateCallback: AnimatableSpanInvalidator? = null
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private var refDrawTarget: WeakReference<Any>? = null
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private var errorDrawableCache: Drawable? = null
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private var lastWidth: Float? = null
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private var transY = 0f
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private var emojiHeight = 0f
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private var emojiWidth = 0f
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/**
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* lastAspect に基づいて rectDst と transY を更新する
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*/
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private fun updateRect(aspectArg: Float? = null, textSize: Float, baseline: Float) {
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// テキストサイズをスケーリングした基本高さ
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this.emojiHeight = textSize * scaleRatio * scale
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// ベースラインから上下方向にずらすオフセット
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val cDescent = emojiHeight * descentRatio
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this.transY = baseline - emojiHeight + cDescent
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val aspect = when(aspectArg){
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null ->{
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imageAspectCache[url] ?: 1f
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}
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else->{
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imageAspectCache.put(url,aspectArg)
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aspectArg
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}
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}.takeIf { it>0f }?:1f
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when {
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// 横長画像で、それを許可するモード
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aspect > 1.36f && sizeMode == EmojiSizeMode.Wide -> {
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// 絵文字のアスペクト比から描画範囲の幅と高さを決める
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val dstWidth = min(maxEmojiWidth, aspect * emojiHeight)
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val dstHeight = dstWidth / aspect
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val dstX = 0f
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val dstY = (emojiHeight - dstHeight) / 2f
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rectDst.set(dstX, dstY, dstX + dstWidth, dstY + dstHeight)
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emojiWidth = dstWidth
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}
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else -> {
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emojiWidth = emojiHeight
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// 絵文字のアスペクト比から描画範囲の幅と高さを決める
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val dstWidth: Float
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val dstHeight: Float
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if (aspect >= 1f) {
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dstWidth = emojiHeight
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dstHeight = emojiHeight / aspect
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} else {
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dstHeight = emojiHeight
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dstWidth = emojiHeight * aspect
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}
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val dstX = (emojiHeight - dstWidth) / 2f
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val dstY = (emojiHeight - dstHeight) / 2f
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rectDst.set(dstX, dstY, dstX + dstWidth, dstY + dstHeight)
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}
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}
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// 出力サイズが変化したならrequestLayout
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val newWidth = rectDst.width()
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if (lastWidth != null && lastWidth != newWidth) {
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log.i("updateRect: width changed. $lastWidth → $newWidth")
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invalidateCallback?.requestLayout()
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}
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lastWidth = newWidth
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}
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override fun setInvalidateCallback(
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drawTargetTag: Any,
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invalidateCallback: AnimatableSpanInvalidator,
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) {
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this.refDrawTarget = WeakReference(drawTargetTag)
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this.invalidateCallback = invalidateCallback
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}
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override fun getSize(
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paint: Paint,
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text: CharSequence,
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@IntRange(from = 0) start: Int,
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@IntRange(from = 0) end: Int,
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fm: Paint.FontMetricsInt?,
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): Int {
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updateRect(aspectArg = null, paint.textSize, baseline = 0f)
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val height = (emojiHeight + 0.5f).toInt()
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if (fm != null) {
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val cDescent = (0.5f + height * descentRatio).toInt()
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val cAscent = cDescent - height
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if (fm.ascent > cAscent) fm.ascent = cAscent
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if (fm.top > cAscent) fm.top = cAscent
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if (fm.descent < cDescent) fm.descent = cDescent
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if (fm.bottom < cDescent) fm.bottom = cDescent
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}
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return (emojiWidth + 0.5f).toInt()
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}
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override fun draw(
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canvas: Canvas,
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text: CharSequence,
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start: Int,
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end: Int,
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x: Float,
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top: Int,
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baseline: Int,
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bottom: Int,
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textPaint: Paint,
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) {
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if (drawFrame(canvas, x, baseline, textPaint)) return
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drawError(canvas, x, baseline, textPaint)
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}
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private fun drawFrame(
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canvas: Canvas,
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x: Float,
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baseline: Int,
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textPaint: Paint,
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): Boolean {
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val invalidateCallback = this.invalidateCallback
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if (invalidateCallback == null) {
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log.e("draw: invalidate_callback is null.")
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return false
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}
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// APNGデータの取得
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val frames = App1.custom_emoji_cache.getFrames(refDrawTarget, url) {
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invalidateCallback.delayInvalidate(0L)
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} ?: return false
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val t = when {
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PrefB.bpDisableEmojiAnimation.value -> 0L
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else -> invalidateCallback.timeFromStart
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}
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// アニメーション開始時刻からの経過時間に応じたフレームを探索
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frames.findFrame(mFrameFindResult, t)
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val b = mFrameFindResult.bitmap
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if (b == null || b.isRecycled) {
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log.e("draw: bitmap is null or recycled.")
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return false
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}
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val srcWidth = b.width
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val srcHeight = b.height
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if (srcWidth < 1 || srcHeight < 1) {
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log.e("draw: bitmap size is too small.")
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return false
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}
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rectSrc.set(0, 0, srcWidth, srcHeight)
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updateRect(
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aspectArg = srcWidth.toFloat() / srcHeight.toFloat(),
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textPaint.textSize,
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baseline.toFloat()
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)
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canvas.save()
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try {
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canvas.translate(x, transY)
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canvas.drawBitmap(b, rectSrc, rectDst, mPaint)
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} catch (ex: Throwable) {
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log.w(ex, "drawBitmap failed.")
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// 10月6日 18:18（アプリのバージョン: 378） Sony Xperia X Compact（F5321）, Android 8.0
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// 10月6日 11:35（アプリのバージョン: 380） Samsung Galaxy S7 Edge（hero2qltetmo）, Android 8.0
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// 10月2日 21:56（アプリのバージョン: 376） Google Pixel 3（blueline）, Android 9
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// java.lang.RuntimeException:
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// at android.graphics.BaseCanvas.throwIfCannotDraw (BaseCanvas.java:55)
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// at android.view.DisplayListCanvas.throwIfCannotDraw (DisplayListCanvas.java:226)
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// at android.view.RecordingCanvas.drawBitmap (RecordingCanvas.java:123)
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// at jp.juggler.subwaytooter.span.NetworkEmojiSpan.draw (NetworkEmojiSpan.kt:137)
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} finally {
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canvas.restore()
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}
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// 少し後に描画しなおす
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val delay = mFrameFindResult.delay
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if (delay != Long.MAX_VALUE && !PrefB.bpDisableEmojiAnimation.value) {
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invalidateCallback.delayInvalidate(delay)
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}
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return true
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}
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private fun drawError(
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canvas: Canvas,
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x: Float,
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baseline: Int,
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textPaint: Paint,
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) {
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val drawable = errorDrawableCache
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?: ContextCompat.getDrawable(lazyContext, errorDrawableId)
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?.also { errorDrawableCache = it }
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drawable ?: return
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val srcWidth = drawable.intrinsicWidth.toFloat()
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val srcHeight = drawable.intrinsicHeight.toFloat()
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updateRect(
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aspectArg = srcWidth / srcHeight,
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textSize = textPaint.textSize,
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baseline = baseline.toFloat()
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)
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canvas.save()
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try {
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canvas.translate(x, transY)
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drawable.setBounds(
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rectDst.left.toInt(),
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rectDst.top.toInt(),
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rectDst.right.plus(0.5f).toInt(),
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rectDst.bottom.plus(0.5f).toInt(),
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)
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drawable.draw(canvas)
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} catch (ex: Throwable) {
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log.w(ex, "drawBitmap failed.")
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// 10月6日 18:18（アプリのバージョン: 378） Sony Xperia X Compact（F5321）, Android 8.0
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// 10月6日 11:35（アプリのバージョン: 380） Samsung Galaxy S7 Edge（hero2qltetmo）, Android 8.0
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// 10月2日 21:56（アプリのバージョン: 376） Google Pixel 3（blueline）, Android 9
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// java.lang.RuntimeException:
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// at android.graphics.BaseCanvas.throwIfCannotDraw (BaseCanvas.java:55)
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// at android.view.DisplayListCanvas.throwIfCannotDraw (DisplayListCanvas.java:226)
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// at android.view.RecordingCanvas.drawBitmap (RecordingCanvas.java:123)
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// at jp.juggler.subwaytooter.span.NetworkEmojiSpan.draw (NetworkEmojiSpan.kt:137)
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} finally {
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canvas.restore()
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}
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}
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}
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