From 9103b5bcb89a117dfa9cc14c25ab5542bad0a918 Mon Sep 17 00:00:00 2001
From: Vladimir <vladimir.burshnev@duallab.com>
Date: Fri, 13 Feb 2026 15:28:15 +0300
Subject: [PATCH] The error artifacts is not highlighted

---
 src/core/bounding_boxes.js | 16 +++++++++++++++-
 src/core/evaluator.js      |  6 +++++-
 2 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/src/core/bounding_boxes.js b/src/core/bounding_boxes.js
index e43390008f9a9..aecbaf43de793 100644
--- a/src/core/bounding_boxes.js
+++ b/src/core/bounding_boxes.js
@@ -507,6 +507,8 @@ class BoundingBoxesCalculator {
     state.y = Math.min(y0, y1, y2, y3);
     state.w = Math.max(x0, x1, x2, x3) - state.x;
     state.h = Math.max(y0, y1, y2, y3) - state.y;
+
+    this.operationArray[this.operationIndex] = [[state.x, state.y, state.w, state.h]];
   }
 
   parseOperator(fn, args) {
@@ -712,9 +714,21 @@ class BoundingBoxesCalculator {
         }
         break;
       case OPS.paintXObject:
-        if (args[0] === "Image") {
+        const [type, bboxes] = args;
+        if (type === "Image") {
           this.getImageBoundingBox();
           this.saveGraphicsBoundingBox();
+        } else if (type === "Form" && typeof bboxes === "object") {
+          const opArr = Object.values(bboxes).map((b) => {
+            let { contentItems, contentItem } = b;
+            while (contentItems?.length) {
+              [{ contentItems, contentItem }] = contentItems;
+            }
+            if (contentItem?.x == null) return [];
+            const { x, y, w, h } = contentItem;
+            return [x, y, w, h];
+          });
+          this.operationArray[this.operationIndex] = opArr;
         }
         break;
       case OPS.showText:
diff --git a/src/core/evaluator.js b/src/core/evaluator.js
index 83f8ff275d46b..c321b2217e4dc 100644
--- a/src/core/evaluator.js
+++ b/src/core/evaluator.js
@@ -1873,11 +1873,15 @@ class PartialEvaluator {
                       boundingBoxCalculator.textState,
                       boundingBoxCalculator.graphicsState
                     )
-                    .then(function ([boundingBoxesByMCID]) {
+                    .then(function ([boundingBoxesByMCID, _, boundingBoxesWithoutMCID]) {
                       boundingBoxCalculator.addRefBoundingBoxes(
                         xobj.dict.objId,
                         boundingBoxesByMCID
                       );
+                      boundingBoxCalculator.parseOperator(OPS.paintXObject, [
+                        type.name,
+                        boundingBoxesWithoutMCID,
+                      ]);
                       stateManager.restore();
                       boundingBoxCalculator.restoreState();
                       resolveXObject();