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src/core/annotation.js

@@ -447,6 +447,7 @@ class Annotation {
     this.setColor(dict.getArray("C"));
     this.setBorderStyle(dict);
     this.setAppearance(dict);
+    this.initAppearancePos = this.appearance?.pos;
     this.setOptionalContent(dict);
 
     const MK = dict.get("MK");
@@ -921,8 +922,10 @@ class Annotation {
       isUsingOwnCanvas,
     ]);
 
-    await evaluator.getOperatorList({
+    const [MCIDBBoxes, opPos, noMCIDBBoxes] = await evaluator.getOperatorList({
+      initStreamPos: this.initAppearancePos,
       stream: appearance,
+      intent,
       task,
       resources,
       operatorList: opList,
@@ -934,7 +937,15 @@ class Annotation {
       opList.addOp(OPS.endMarkedContent, []);
     }
     this.reset();
-    return { opList, separateForm: false, separateCanvas: isUsingOwnCanvas };
+    return {
+      opList,
+      separateForm: false,
+      separateCanvas: isUsingOwnCanvas,
+      annotBBoxesAndOpPos: {
+        operationPosition: opPos,
+        boundingBoxes: [MCIDBBoxes, noMCIDBBoxes],
+      },
+    };
   }
 
   async save(evaluator, task, annotationStorage) {
@@ -1743,7 +1754,8 @@ class WidgetAnnotation extends Annotation {
     ]);
 
     const stream = new StringStream(content);
-    await evaluator.getOperatorList({
+    const [MCIDBBoxes, opPos, noMCIDBBoxes] = await evaluator.getOperatorList({
+      intent,
       stream,
       task,
       resources: this._fieldResources.mergedResources,
@@ -1754,7 +1766,15 @@ class WidgetAnnotation extends Annotation {
     if (optionalContent !== undefined) {
       opList.addOp(OPS.endMarkedContent, []);
     }
-    return { opList, separateForm: false, separateCanvas: false };
+    return {
+      opList,
+      separateForm: false,
+      separateCanvas: false,
+      annotBBoxesAndOpPos: {
+        operationPosition: opPos,
+        boundingBoxes: [MCIDBBoxes, noMCIDBBoxes],
+      },
+    };
   }
 
   _getMKDict(rotation) {

src/core/document.js

@@ -462,6 +462,7 @@ class Page {
         intent & RenderingIntentFlag.ANNOTATIONS_DISABLE
       ) {
         if (intent & RenderingIntentFlag.OPLIST) {
+          pageOpList.addOp(OPS.annotBBoxesAndOpPos, []);
           pageOpList.addOp(OPS.operationPosition, positionByOperationIndex);
           pageOpList.addOp(OPS.boundingBoxes, [MCIDBoundingBoxes, noMCIDBoundingBoxes]);
         }
@@ -507,7 +508,8 @@ class Page {
         let form = false,
           canvas = false;
 
-        for (const { opList, separateForm, separateCanvas } of opLists) {
+        const annotationsBBoxesAndOperationPosition = [];
+        for (const { opList, separateForm, separateCanvas, annotBBoxesAndOpPos } of opLists) {
           pageOpList.addOpList(opList);
 
           if (separateForm) {
@@ -516,8 +518,16 @@ class Page {
           if (separateCanvas) {
             canvas = separateCanvas;
           }
+
+          annotationsBBoxesAndOperationPosition.push(
+            annotBBoxesAndOpPos ? [
+              annotBBoxesAndOpPos.operationPosition,
+              annotBBoxesAndOpPos.boundingBoxes,
+            ] : []
+          );
         }
         if (intent & RenderingIntentFlag.OPLIST) {
+          pageOpList.addOp(OPS.annotBBoxesAndOpPos, annotationsBBoxesAndOperationPosition);
           pageOpList.addOp(OPS.operationPosition, positionByOperationIndex);
           pageOpList.addOp(OPS.boundingBoxes, [
             MCIDBoundingBoxes,

src/core/evaluator.js

@@ -1636,6 +1636,7 @@ class PartialEvaluator {
   }
 
   getOperatorList({
+    initStreamPos,
     stream,
     task,
     resources,
@@ -1657,6 +1658,8 @@ class PartialEvaluator {
     var self = this;
     var xref = this.xref;
     let parsingText = false;
+    let prevStreamPos;
+    if (initStreamPos != null) stream.pos = initStreamPos;
     const localImageCache = new LocalImageCache();
     const localColorSpaceCache = new LocalColorSpaceCache();
     const localGStateCache = new LocalGStateCache();
@@ -1691,6 +1694,7 @@ class PartialEvaluator {
       const operation = {};
       let stop, i, ii, cs, name, isValidName;
       while (!(stop = timeSlotManager.check())) {
+        if (prevStreamPos) stream.pos = prevStreamPos; 
         // The arguments parsed by read() are used beyond this loop, so we
         // cannot reuse the same array on each iteration. Therefore we pass
         // in |null| as the initial value (see the comment on
@@ -1703,6 +1707,7 @@ class PartialEvaluator {
         let fn = operation.fn;
         boundingBoxCalculator.incrementOperation(fn);
 
+        prevStreamPos = stream.pos;
         switch (fn | 0) {
           case OPS.paintXObject:
             // eagerly compile XForm objects

src/shared/util.js

@@ -365,7 +365,8 @@ const OPS = {
   paintSolidColorImageMask: 90,
   constructPath: 91,
   boundingBoxes: 100,
-  operationPosition: 101
+  operationPosition: 101,
+  annotBBoxesAndOpPos: 102,
 };
 
 const UNSUPPORTED_FEATURES = {