SkCanvas::adjustToTopLayer()

src/core/SkCanvas.cpp

Index: src/core/SkCanvas.cpp
diff --git a/src/core/SkCanvas.cpp b/src/core/SkCanvas.cpp
index c7a9dc72f299e75347298965966dc7554cb80c84..522af23bdeb5e73391c3fec0fff1b1c98ec3139f 100644
--- a/src/core/SkCanvas.cpp
+++ b/src/core/SkCanvas.cpp
@@ -2036,6 +2036,16 @@ void SkCanvas::legacy_drawBitmapRect(const SkBitmap& bitmap, const SkRect* src,
     }
 }
 
+void SkCanvas::adjustToTopLayer(SkMatrix* matrix, SkIRect* clip_bounds) {
+    SkIRect layer_bounds = this->getTopLayerBounds();
+    if (clip_bounds) {
+        clip_bounds->offset(-layer_bounds.left(), -layer_bounds.top());
+    }
+    if (matrix) {
+        matrix->preTranslate(-layer_bounds.left(), -layer_bounds.top());
+    }
+}
+
 //////////////////////////////////////////////////////////////////////////////
 //  These are the virtual drawing methods
 //////////////////////////////////////////////////////////////////////////////