Merge pull request #19716 from calixteman/issue16742

Take into account the group bbox

Author: calixteman

src/display/canvas.js

@@ -1380,7 +1380,7 @@ class CanvasGraphics {
     this.suspendedCtx = this.ctx;
     this.ctx = scratchCanvas.context;
     const ctx = this.ctx;
-    ctx.setTransform(...getCurrentTransform(this.suspendedCtx));
+    ctx.setTransform(this.suspendedCtx.getTransform());
     copyCtxState(this.suspendedCtx, ctx);
     mirrorContextOperations(ctx, this.suspendedCtx);
 
@@ -2551,6 +2551,17 @@ class CanvasGraphics {
     groupCtx.translate(-offsetX, -offsetY);
     groupCtx.transform(...currentTransform);
 
+    // Apply the bbox to the group context.
+    let clip = new Path2D();
+    const [x0, y0, x1, y1] = group.bbox;
+    clip.rect(x0, y0, x1 - x0, y1 - y0);
+    if (group.matrix) {
+      const path = new Path2D();
+      path.addPath(clip, new DOMMatrix(group.matrix));
+      clip = path;
+    }
+    groupCtx.clip(clip);
+
     if (group.smask) {
       // Saving state and cached mask to be used in setGState.
       this.smaskStack.push({

test/pdfs/.gitignore

@@ -716,3 +716,4 @@
 !issue19633.pdf
 !issue19424.pdf
 !issue18529.pdf
+!issue16742.pdf

test/pdfs/issue16742.pdf

@@ -12019,5 +12019,12 @@
     "md5": "f95d2cbdd904f5acf922e088cc3cb153",
     "rounds": 1,
     "type": "eq"
+  },
+  {
+    "id": "issue16742",
+    "file": "pdfs/issue16742.pdf",
+    "md5": "98b19e944339c01c10c503685eee3ad2",
+    "rounds": 1,
+    "type": "eq"
   }
 ]