Add sharing for PNP usernames badge.

app/src/main/java/org/thoughtcrime/securesms/compose/ScreenshotController.kt

@@ -0,0 +1,76 @@
+/*
+ * Copyright 2023 Signal Messenger, LLC
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+package org.thoughtcrime.securesms.compose
+
+import android.app.Activity
+import android.graphics.Bitmap
+import android.graphics.Canvas
+import android.os.Build
+import android.os.Handler
+import android.os.Looper
+import android.view.PixelCopy
+import android.view.View
+import androidx.compose.ui.geometry.Rect
+import androidx.compose.ui.layout.LayoutCoordinates
+import androidx.compose.ui.layout.boundsInRoot
+import androidx.compose.ui.layout.boundsInWindow
+
+/**
+ * Helper class for screenshotting compose views.
+ *
+ * You need to call bind from the compose, passing in the
+ * LocalView.current view with bounds fetched from when the
+ * composable is globally positioned.
+ *
+ * See QrCodeBadge.kt for an example
+ */
+class ScreenshotController {
+  private var screenshotCallback: (() -> Bitmap?)? = null
+
+  fun bind(view: View, bounds: Rect?) {
+    if (bounds == null) {
+      screenshotCallback = null
+      return
+    }
+    screenshotCallback = {
+      val bitmap = Bitmap.createBitmap(
+        bounds.width.toInt(),
+        bounds.height.toInt(),
+        Bitmap.Config.ARGB_8888
+      )
+
+      if (Build.VERSION.SDK_INT >= 26) {
+        PixelCopy.request(
+          (view.context as Activity).window,
+          android.graphics.Rect(bounds.left.toInt(), bounds.top.toInt(), bounds.right.toInt(), bounds.bottom.toInt()),
+          bitmap,
+          {},
+          Handler(Looper.getMainLooper())
+        )
+      } else {
+        val canvas = Canvas(bitmap)
+          .apply {
+            translate(-bounds.left, -bounds.top)
+          }
+        view.draw(canvas)
+      }
+
+      bitmap
+    }
+  }
+
+  fun screenshot(): Bitmap? {
+    return screenshotCallback?.invoke()
+  }
+}
+
+fun LayoutCoordinates.getScreenshotBounds(): Rect {
+  return if (Build.VERSION.SDK_INT >= 26) {
+    this.boundsInWindow()
+  } else {
+    this.boundsInRoot()
+  }
+}