Merge pull request #20 from Nimrodda/resize-exact

Added an option to resize the cropped bitmap to specific size

Author: SmartToolFactory

cropper/src/main/java/com/smarttoolfactory/cropper/ImageCropper.kt

@@ -135,7 +135,8 @@ fun ImageCropper(
             cropState.cropRect,
             cropOutline,
             onCropStart,
-            onCropSuccess
+            onCropSuccess,
+            cropProperties.requiredSize
         )
 
         val imageModifier = Modifier
@@ -296,7 +297,8 @@ private fun Crop(
     cropRect: Rect,
     cropOutline: CropOutline,
     onCropStart: () -> Unit,
-    onCropSuccess: (ImageBitmap) -> Unit
+    onCropSuccess: (ImageBitmap) -> Unit,
+    requiredSize: IntSize?,
 ) {
 
     val density = LocalDensity.current
@@ -308,15 +310,24 @@ private fun Crop(
     LaunchedEffect(crop) {
         if (crop) {
             flow {
-                emit(
-                    cropAgent.crop(
-                        scaledImageBitmap,
-                        cropRect,
-                        cropOutline,
-                        layoutDirection,
-                        density
-                    )
+                val croppedImageBitmap = cropAgent.crop(
+                    scaledImageBitmap,
+                    cropRect,
+                    cropOutline,
+                    layoutDirection,
+                    density
                 )
+                if (requiredSize != null) {
+                    emit(
+                        cropAgent.resize(
+                            croppedImageBitmap,
+                            requiredSize.width,
+                            requiredSize.height,
+                        )
+                    )
+                } else {
+                    emit(croppedImageBitmap)
+                }
             }
                 .flowOn(Dispatchers.Default)
                 .onStart {

cropper/src/main/java/com/smarttoolfactory/cropper/crop/CropAgent.kt

@@ -3,7 +3,17 @@ package com.smarttoolfactory.cropper.crop
 import android.graphics.Bitmap
 import androidx.compose.ui.geometry.Offset
 import androidx.compose.ui.geometry.Rect
-import androidx.compose.ui.graphics.*
+import androidx.compose.ui.graphics.BlendMode
+import androidx.compose.ui.graphics.Canvas
+import androidx.compose.ui.graphics.ImageBitmap
+import androidx.compose.ui.graphics.Paint
+import androidx.compose.ui.graphics.Path
+import androidx.compose.ui.graphics.addOutline
+import androidx.compose.ui.graphics.asAndroidBitmap
+import androidx.compose.ui.graphics.asAndroidPath
+import androidx.compose.ui.graphics.asImageBitmap
+import androidx.compose.ui.graphics.nativeCanvas
+import androidx.compose.ui.graphics.toComposeRect
 import androidx.compose.ui.unit.Density
 import androidx.compose.ui.unit.LayoutDirection
 import com.smarttoolfactory.cropper.model.CropImageMask
@@ -138,5 +148,20 @@ class CropAgent {
             }
         }
     }
+
+    fun resize(
+        croppedImageBitmap: ImageBitmap,
+        requiredWidth: Int,
+        requiredHeight: Int
+    ): ImageBitmap {
+        val resizedBitmap: Bitmap = Bitmap.createScaledBitmap(
+            croppedImageBitmap.asAndroidBitmap(),
+            requiredWidth,
+            requiredHeight,
+            true
+        )
+
+        return resizedBitmap.asImageBitmap()
+    }
 }
 

cropper/src/main/java/com/smarttoolfactory/cropper/settings/CropDefaults.kt

@@ -5,6 +5,7 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.layout.ContentScale
 import androidx.compose.ui.unit.Dp
+import androidx.compose.ui.unit.IntSize
 import androidx.compose.ui.unit.dp
 import com.smarttoolfactory.cropper.ImageCropper
 import com.smarttoolfactory.cropper.crop
@@ -36,7 +37,8 @@ object CropDefaults {
         pannable: Boolean = true,
         fling: Boolean = false,
         zoomable: Boolean = true,
-        rotatable: Boolean = false
+        rotatable: Boolean = false,
+        requiredSize: IntSize? = null,
     ): CropProperties {
         return CropProperties(
             cropType = cropType,
@@ -49,7 +51,8 @@ object CropDefaults {
             pannable = pannable,
             fling = fling,
             zoomable = zoomable,
-            rotatable = rotatable
+            rotatable = rotatable,
+            requiredSize = requiredSize,
         )
     }
 
@@ -94,6 +97,7 @@ data class CropProperties internal constructor(
     val rotatable: Boolean,
     val zoomable: Boolean,
     val maxZoom: Float,
+    val requiredSize: IntSize? = null,
 )
 
 /**