LibPDF: Offset PaintStyle when painting so pattern overlaps properly

Author: https://github.com/X-yl
Commit: 8c7fc4fe6c
Pull-request: https://github.com/SerenityOS/serenity/pull/22197
Reviewed-by: https://github.com/nico ✅

Userland/Libraries/LibPDF/Renderer.h

@@ -173,6 +173,8 @@ private:
     Gfx::AffineTransform mutable m_text_rendering_matrix;
 
     HashMap<FontCacheKey, NonnullRefPtr<PDFFont>> m_font_cache;
+    // Used to offset the PaintStyle's origin when rendering a pattern.
+    RefPtr<Gfx::PaintStyle> m_original_paint_style;
 };
 
 }