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Make background on characters and icons transparent.

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This commit is contained in:
Christopher O'Grady 2025-01-10 14:24:12 -05:00
parent eabf8770cc
commit 1088e5259a
3 changed files with 33 additions and 7 deletions
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6
app/src/main/java/com/github/nacabaro/vbhelper/components/CharacterEntry.kt
View File

@ -13,7 +13,9 @@ import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.FilterQuality
import androidx.compose.ui.graphics.asImageBitmap
import androidx.compose.ui.unit.dp
import com.github.nacabaro.vbhelper.domain.Sprites
import com.github.nacabaro.vbhelper.utils.BitmapData
import com.github.nacabaro.vbhelper.utils.getBitmap
import java.nio.ByteBuffer
@Composable
@ -23,9 +25,7 @@ fun CharacterEntry(
onClick: () -> Unit = { }
) {
val bitmap = remember (icon.bitmap) {
Bitmap.createBitmap(icon.width, icon.height, Bitmap.Config.RGB_565).apply {
copyPixelsFromBuffer(ByteBuffer.wrap(icon.bitmap))
}
icon.getBitmap()
}
val imageBitmap = remember(bitmap) { bitmap.asImageBitmap() }

5
app/src/main/java/com/github/nacabaro/vbhelper/components/DexDimEntry.kt
View File

@ -17,6 +17,7 @@ import androidx.compose.ui.graphics.FilterQuality
import androidx.compose.ui.graphics.asImageBitmap
import androidx.compose.ui.unit.dp
import com.github.nacabaro.vbhelper.utils.BitmapData
import com.github.nacabaro.vbhelper.utils.getBitmap
import java.nio.ByteBuffer
@Composable
@ -27,9 +28,7 @@ fun DexDiMEntry(
modifier: Modifier = Modifier
) {
val bitmap = remember (logo.bitmap) {
Bitmap.createBitmap(logo.width, logo.height, Bitmap.Config.RGB_565).apply {
copyPixelsFromBuffer(ByteBuffer.wrap(logo.bitmap))
}
logo.getBitmap()
}
val imageBitmap = remember(bitmap) { bitmap.asImageBitmap() }

29
app/src/main/java/com/github/nacabaro/vbhelper/utils/BitmapData.kt
View File

@ -1,8 +1,35 @@
package com.github.nacabaro.vbhelper.utils
import android.graphics.Bitmap
import com.github.cfogrady.vb.dim.sprite.SpriteData
// simple, but smooth
data class BitmapData (
val bitmap: ByteArray,
val width: Int,
val height: Int
)
)
fun BitmapData.getBitmap(): Bitmap {
return Bitmap.createBitmap(createARGBIntArray(), this.width, this.height, Bitmap.Config.HARDWARE)
}
fun BitmapData.createARGBIntArray(): IntArray {
// hack to get it into correct format by relying on the DIM Sprites methods since we haven't changed the raw pixel data at this point.
val bytes = SpriteData.Sprite.builder().width(this.width).height(this.height).pixelData(this.bitmap).build()
.get24BitRGB()
val result = IntArray(this.width*this.height)
for(i in result.indices) {
val originalIndex = i*3
val red = bytes[originalIndex].toUInt() and 0xFFu
val green = bytes[originalIndex+1].toUInt() and 0xFFu
val blue = bytes[originalIndex+2].toUInt() and 0xFFu
val alpha = if(red == 0u && blue == 0u && green == 0xFFu) 0 else 0xFF
result[i] = (alpha shl 24) or (red shl 16).toInt() or (green shl 8).toInt() or blue.toInt()
}
return result
}
fun List<BitmapData>.getBitmaps(): List<Bitmap> {
return this.map{it.getBitmap()}
}