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More work on bg detection

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This commit is contained in:
Jay 2019-04-13 12:29:25 -07:00
parent 83b684c37d
commit afde195534
2 changed files with 48 additions and 38 deletions
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28
app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/pager/PagerPageHolder.kt
View File

@ -4,10 +4,8 @@ import android.annotation.SuppressLint
import android.content.Intent
import android.graphics.BitmapFactory
import android.graphics.PointF
import android.graphics.drawable.ColorDrawable
import android.graphics.drawable.Drawable
import android.net.Uri
import android.support.v4.graphics.ColorUtils
import android.view.GestureDetector
import android.view.Gravity
import android.view.MotionEvent
@ -249,31 +247,13 @@ class PagerPageHolder(
val bytesArray = openStream!!.readBytes()
val imageView = initSubsamplingImageView()
if (viewer.config.imageCropBorders) {
val bytesStream = bytesArray.inputStream()
imageView.setImage(ImageSource.inputStream(bytesStream))
bytesStream.close()
}
val bytesStream = bytesArray.inputStream()
imageView.setImage(ImageSource.inputStream(bytesStream))
bytesStream.close()
launchUI {
val image = async { BitmapFactory.decodeByteArray(bytesArray, 0, bytesArray.size) }
val bg = ImageUtil.autoSetBackground(image.await())
imageView.background = bg
if (!viewer.config.imageCropBorders) {
if (bg is ColorDrawable) {
val array = FloatArray(3)
ColorUtils.colorToHSL(bg.color, array)
if (array[1] < 0.2) {
val bytesStream = bytesArray.inputStream()
imageView.setImage(ImageSource.inputStream(bytesStream))
bytesStream.close()
}
else
imageView.setImage(ImageSource.bitmap(image.await()))
}
else
imageView.setImage(ImageSource.bitmap(image.await()))
}
imageView.background = ImageUtil.autoSetBackground(image.await())
}
}
else {

58
app/src/main/java/eu/kanade/tachiyomi/util/ImageUtil.kt
View File

@ -62,6 +62,8 @@ object ImageUtil {
val right = image.width - left
val midX = image.width / 2
val midY = image.height / 2
val offsetX = (image.width * 0.01).toInt()
val offsetY = (image.height * 0.01).toInt()
val topLeftIsDark = isDark(image.getPixel(left, top))
val topRightIsDark = isDark(image.getPixel(right, top))
val midLeftIsDark = isDark(image.getPixel(left, midY))
@ -87,32 +89,43 @@ object ImageUtil {
isWhite(image.getPixel(right, bot)).toInt() > 2)
darkBG = false
var blackPixel = when {
topLeftIsDark -> image.getPixel(left, top)
topRightIsDark -> image.getPixel(right, top)
botLeftIsDark -> image.getPixel(left, bot)
else -> image.getPixel(right, bot)
}
var overallWhitePixels = 0
var overallBlackPixels = 0
outer@ for (x in intArrayOf(left, right)) {
outer@ for (x in intArrayOf(left, left - offsetX, right, right + offsetX)) {
var whitePixelsStreak = 0
var whitePixels = 0
var blackPixelsStreak = 0
var blackPixels = 0
var blackStreak = false
var whiteStrak = false
val notOffset = x == left || x == right
for (y in (0 until image.height step image.height / 25)) {
val pixel = image.getPixel(x, y)
val pixelOff = image.getPixel(x + (if (x == left) -offsetX else offsetX), y)
if (isWhite(pixel)) {
blackPixelsStreak = 0
whitePixelsStreak++
whitePixels++
overallWhitePixels++
if (notOffset)
overallWhitePixels++
if (whitePixelsStreak > 14) {
whiteStrak = true
}
} else {
whitePixelsStreak = 0
if (isDark(pixel)) {
if (isDark(pixel) && isDark(pixelOff)) {
blackPixels++
overallBlackPixels++
if (notOffset)
overallBlackPixels++
blackPixelsStreak++
if (blackPixelsStreak > 14) {
if (blackPixelsStreak >= 14) {
blackStreak = true
}
} else {
@ -122,19 +135,34 @@ object ImageUtil {
}
when {
blackPixels > 22 -> {
darkBG = true; overallWhitePixels = 0; break@outer
if (x == right || x == right + offsetX)
blackPixel = when {
topRightIsDark -> image.getPixel(right, top)
botRightIsDark -> image.getPixel(right, bot)
else -> blackPixel
}
darkBG = true;
overallWhitePixels = 0;
break@outer
}
blackStreak -> {
darkBG = true
if (x == right || x == right + offsetX)
blackPixel = when {
topRightIsDark -> image.getPixel(right, top)
botRightIsDark -> image.getPixel(right, bot)
else -> blackPixel
}
if (blackPixels > 18) {
overallWhitePixels = 0;
break@outer
}
}
blackStreak -> darkBG = true
whiteStrak || whitePixels > 22 -> darkBG = false
}
}
val blackPixel = when {
topLeftIsDark -> image.getPixel(left, top)
topRightIsDark -> image.getPixel(right, top)
botLeftIsDark -> image.getPixel(left, bot)
else -> image.getPixel(right, bot)
}
if (overallWhitePixels > 9 && overallWhitePixels > overallBlackPixels) {
darkBG = false
}
@ -151,7 +179,9 @@ object ImageUtil {
if (topLeftIsDark && topRightIsDark && (topMidIsDark || overallBlackPixels > 9))
return GradientDrawable(GradientDrawable.Orientation.TOP_BOTTOM,
intArrayOf(blackPixel, blackPixel, Color.WHITE, Color.WHITE))
else if (botLeftIsDark && botRightIsDark && (isDark(image.getPixel(midX, bot)) || overallBlackPixels > 9))
else if (botLeftIsDark && botRightIsDark
&& isDark(image.getPixel(left - offsetX, bot)) && isDark(image.getPixel(right + offsetX, bot))
&& (isDark(image.getPixel(midX, bot)) || overallBlackPixels > 9))
return GradientDrawable(GradientDrawable.Orientation.TOP_BOTTOM,
intArrayOf(Color.WHITE, Color.WHITE, blackPixel, blackPixel))
return ColorDrawable(Color.WHITE)