1 files changed, 56 insertions, 0 deletions
diff --git a/core/fxge/dib/cfx_bitmapstorer.cpp b/core/fxge/dib/cfx_bitmapstorer.cpp
new file mode 100644
index 0000000000..ac876b16b7
--- /dev/null
+++ b/core/fxge/dib/cfx_bitmapstorer.cpp
@@ -0,0 +1,56 @@
+// Copyright 2017 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "core/fxge/dib/cfx_bitmapstorer.h"
+
+#include <utility>
+
+#include "core/fxge/dib/dib_int.h"
+#include "third_party/base/ptr_util.h"
+
+CFX_BitmapStorer::CFX_BitmapStorer() {}
+
+CFX_BitmapStorer::~CFX_BitmapStorer() {}
+
+CFX_RetainPtr<CFX_DIBitmap> CFX_BitmapStorer::Detach() {
+  return std::move(m_pBitmap);
+}
+
+void CFX_BitmapStorer::Replace(CFX_RetainPtr<CFX_DIBitmap>&& pBitmap) {
+  m_pBitmap = std::move(pBitmap);
+}
+
+void CFX_BitmapStorer::ComposeScanline(int line,
+                                       const uint8_t* scanline,
+                                       const uint8_t* scan_extra_alpha) {
+  uint8_t* dest_buf = const_cast<uint8_t*>(m_pBitmap->GetScanline(line));
+  uint8_t* dest_alpha_buf =
+      m_pBitmap->m_pAlphaMask
+          ? const_cast<uint8_t*>(m_pBitmap->m_pAlphaMask->GetScanline(line))
+          : nullptr;
+  if (dest_buf)
+    FXSYS_memcpy(dest_buf, scanline, m_pBitmap->GetPitch());
+
+  if (dest_alpha_buf) {
+    FXSYS_memcpy(dest_alpha_buf, scan_extra_alpha,
+                 m_pBitmap->m_pAlphaMask->GetPitch());
+  }
+}
+
+bool CFX_BitmapStorer::SetInfo(int width,
+                               int height,
+                               FXDIB_Format src_format,
+                               uint32_t* pSrcPalette) {
+  auto pBitmap = pdfium::MakeRetain<CFX_DIBitmap>();
+  if (!pBitmap->Create(width, height, src_format))
+    return false;
+
+  if (pSrcPalette)
+    pBitmap->SetPalette(pSrcPalette);
+
+  m_pBitmap = std::move(pBitmap);
+  return true;
+}