From c24e4acd19406ac2ff302b173ee1310b112441ba Mon Sep 17 00:00:00 2001
From: Nico Weber <thakis@chromium.org>
Date: Mon, 3 Apr 2023 14:29:11 -0400
Subject: LibGfx: Add Bitmap::begin() / Bitmap::end()

Useful for accessing a bitmap like a linear container.
---
 Userland/Libraries/LibGfx/Bitmap.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'Userland')

diff --git a/Userland/Libraries/LibGfx/Bitmap.h b/Userland/Libraries/LibGfx/Bitmap.h
index 7d71839554..786af81287 100644
--- a/Userland/Libraries/LibGfx/Bitmap.h
+++ b/Userland/Libraries/LibGfx/Bitmap.h
@@ -135,6 +135,9 @@ public:
     [[nodiscard]] ARGB32* scanline(int physical_y);
     [[nodiscard]] ARGB32 const* scanline(int physical_y) const;
 
+    [[nodiscard]] ARGB32* begin();
+    [[nodiscard]] ARGB32* end();
+
     [[nodiscard]] IntRect rect() const { return { {}, m_size }; }
     [[nodiscard]] IntSize size() const { return m_size; }
     [[nodiscard]] int width() const { return m_size.width(); }
@@ -293,6 +296,16 @@ ALWAYS_INLINE ARGB32 const* Bitmap::scanline(int y) const
     return reinterpret_cast<ARGB32 const*>(scanline_u8(y));
 }
 
+ALWAYS_INLINE ARGB32* Bitmap::begin()
+{
+    return scanline(0);
+}
+
+ALWAYS_INLINE ARGB32* Bitmap::end()
+{
+    return reinterpret_cast<ARGB32*>(reinterpret_cast<u8*>(m_data) + (m_size.height() * m_pitch));
+}
+
 template<>
 ALWAYS_INLINE Color Bitmap::get_pixel<StorageFormat::BGRx8888>(int x, int y) const
 {
-- 
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