3 files changed, 29 insertions(+), 1 deletions(-)

M app/src/main/java/com/github/nacabaro/vbhelper/components/CharacterEntry.kt
M app/src/main/java/com/github/nacabaro/vbhelper/screens/DimScreen.kt
M app/src/main/java/com/github/nacabaro/vbhelper/utils/BitmapData.kt

@@ 16,16 16,18 @@ 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 com.github.nacabaro.vbhelper.utils.getObscuredBitmap
 import java.nio.ByteBuffer
 
 @Composable
 fun CharacterEntry(
     icon: BitmapData,
+    obscure: Boolean = false,
     modifier: Modifier = Modifier,
     onClick: () -> Unit = {  }
 ) {
     val bitmap = remember (icon.bitmap) {
-        icon.getBitmap()
+        if(obscure) icon.getObscuredBitmap() else icon.getBitmap()
     }
     val imageBitmap = remember(bitmap) { bitmap.asImageBitmap() }
 

@@ 1,5 1,6 @@
 package com.github.nacabaro.vbhelper.screens
 
+import android.util.Log
 import androidx.compose.foundation.lazy.grid.GridCells
 import androidx.compose.foundation.lazy.grid.LazyVerticalGrid
 import androidx.compose.foundation.lazy.grid.items


@@ 54,6 55,7 @@ fun DiMScreen(
             items(characterList.value) { character ->
                 CharacterEntry(
                     onClick = {  },
+                    obscure = true,
                     icon = BitmapData(
                         bitmap = character.sprite1,
                         width = character.spritesWidth,

@@ 14,6 14,30 @@ fun BitmapData.getBitmap(): Bitmap {
     return Bitmap.createBitmap(createARGBIntArray(), this.width, this.height, Bitmap.Config.HARDWARE)
 }
 
+object ARGBMasks {
+    const val ALPHA = (0xFF shl 24)
+    const val RED = (0xFF shl 16)
+    const val GREEN = (0xFF shl 8)
+    const val BLUE = 0xFF
+
+}
+
+const val BLACK = ARGBMasks.ALPHA
+
+fun BitmapData.getObscuredBitmap(): Bitmap {
+    val argbPixels = createARGBIntArray()
+    for(i in argbPixels.indices) {
+        val currentPixel = argbPixels[i]
+        if( currentPixel and ARGBMasks.ALPHA != 0) {
+            // non transparent pixel
+            argbPixels[i] = BLACK
+        }
+    }
+    return Bitmap.createBitmap(argbPixels, 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()