优化

app/src/main/java/com/sw/dualscreen/utils/BitmapCropper.kt

@@ -1,6 +1,7 @@
 package com.sw.dualscreen.utils
 import android.graphics.Bitmap
 
+
 object BitmapCropper {
     /**
      * 裁剪Bitmap中心区域为指定尺寸
@@ -9,30 +10,33 @@ object BitmapCropper {
      * @param targetHeight 目标高度
      * @return 裁剪后的Bitmap
      */
-    fun cropCenter(original: Bitmap, targetWidth: Int, targetHeight: Int): Bitmap {
+    fun cropCenter(original: Bitmap, targetWidth: Int, targetHeight: Int, offsetX:Int = 0, offsetY:Int = 0): Bitmap {
         val originalWidth = original.width
         val originalHeight = original.height
-        
+
         // 计算中心点坐标
-        var startX = (originalWidth - targetWidth) / 2
-        var startY = (originalHeight - targetHeight) / 2
-        
+        var startX = (originalWidth - targetWidth) / 2 + offsetX
+        var startY = (originalHeight - targetHeight) / 2 + offsetY
+
         // 边界检查
         startX = startX.coerceAtLeast(0)
         startY = startY.coerceAtLeast(0)
         val actualWidth = minOf(targetWidth, originalWidth - startX)
         val actualHeight = minOf(targetHeight, originalHeight - startY)
-        
-        return Bitmap.createBitmap(original, startX, startY, actualWidth, actualHeight)
+
+        return Bitmap.createBitmap(original, startX, startY, actualWidth, actualHeight).also {
+//            it.setConfig(Bitmap.Config.RGB_565)
+//            it.density = DisplayMetrics.DENSITY_LOW
+        }
     }
 }
 
 // 使用示例
-fun main() {
-    // 假设这是从资源加载的Bitmap
-    val originalBitmap = Bitmap.createBitmap(1000, 1000, Bitmap.Config.ARGB_8888)
-    
-    // 裁剪中心500x500区域
-    val croppedBitmap = BitmapCropper.cropCenter(originalBitmap, 500, 500)
-    println("裁剪后尺寸：${croppedBitmap.width}x${croppedBitmap.height}")
-}
+//fun main() {
+//    // 假设这是从资源加载的Bitmap
+//    val originalBitmap = Bitmap.createBitmap(1000, 1000, Bitmap.Config.ARGB_8888)
+
+//    // 裁剪中心500x500区域
+//    val croppedBitmap = BitmapCropper.cropCenter(originalBitmap, 500, 500)
+//    println("裁剪后尺寸：${croppedBitmap.width}x${croppedBitmap.height}")
+//}