From 17676705a5f9db8e3ff93b204bc9a347c78e378f Mon Sep 17 00:00:00 2001
From: Rodrigo Tobar <rtobar@icrar.org>
Date: Fri, 25 Nov 2022 16:34:06 +0800
Subject: [PATCH] LibPDF: Add facility to obtain Vector<float> from ArrayObject

Arrays of float numbers are common in many PDF objects, and thus to
avoid code repetition I'm introducing a new method to ArrayObject that
will return exactly that.
---
 Userland/Libraries/LibPDF/ObjectDerivatives.cpp | 10 ++++++++++
 Userland/Libraries/LibPDF/ObjectDerivatives.h   |  1 +
 2 files changed, 11 insertions(+)

diff --git a/Userland/Libraries/LibPDF/ObjectDerivatives.cpp b/Userland/Libraries/LibPDF/ObjectDerivatives.cpp
index 9b1e0b834dd..888e7d668bc 100644
--- a/Userland/Libraries/LibPDF/ObjectDerivatives.cpp
+++ b/Userland/Libraries/LibPDF/ObjectDerivatives.cpp
@@ -50,6 +50,16 @@ DeprecatedString NameObject::to_deprecated_string(int) const
     return builder.to_deprecated_string();
 }
 
+Vector<float> ArrayObject::float_elements() const
+{
+    Vector<float> values;
+    values.ensure_capacity(m_elements.size());
+    for (auto const& value : m_elements) {
+        values.append(value.to_float());
+    }
+    return values;
+}
+
 DeprecatedString ArrayObject::to_deprecated_string(int indent) const
 {
     StringBuilder builder;
diff --git a/Userland/Libraries/LibPDF/ObjectDerivatives.h b/Userland/Libraries/LibPDF/ObjectDerivatives.h
index 7375d5f1d50..23cbd94b2ba 100644
--- a/Userland/Libraries/LibPDF/ObjectDerivatives.h
+++ b/Userland/Libraries/LibPDF/ObjectDerivatives.h
@@ -74,6 +74,7 @@ public:
 
     [[nodiscard]] ALWAYS_INLINE size_t size() const { return m_elements.size(); }
     [[nodiscard]] ALWAYS_INLINE Vector<Value> elements() const { return m_elements; }
+    [[nodiscard]] Vector<float> float_elements() const;
 
     ALWAYS_INLINE auto begin() const { return m_elements.begin(); }
     ALWAYS_INLINE auto end() const { return m_elements.end(); }