fix

engine/include/pdfengine/image_mask.hpp

@@ -0,0 +1,24 @@
+#pragma once
+
+#include <memory>
+
+namespace pdfengine {
+
+class ImageObject;
+
+enum class MaskType {
+    None,
+    ExplicitMask,
+    SoftMask
+};
+
+struct ImageMask {
+    MaskType type = MaskType::None;
+    std::shared_ptr<const ImageObject> maskImage;
+
+    [[nodiscard]] bool hasMask() const noexcept {
+        return type != MaskType::None && maskImage != nullptr;
+    }
+};
+
+} // namespace pdfengine