Split fx_dib part 4

- Moved CFX_DIBitmap code to its own cpp file.
- Moved CFX_DIBExtractor out from fx_dib.h

Change-Id: I7b3fe9c657a350320b7ecb3f005017080491fe29
Reviewed-on: https://pdfium-review.googlesource.com/3591
Commit-Queue: dsinclair <dsinclair@chromium.org>
Reviewed-by: dsinclair <dsinclair@chromium.org>

1 files changed, 27 insertions, 0 deletions

diff --git a/core/fxge/dib/cfx_dibextractor.cpp b/core/fxge/dib/cfx_dibextractor.cpp
new file mode 100644
index 0000000000..8de69e2e3b
--- /dev/null
+++ b/core/fxge/dib/cfx_dibextractor.cpp
@@ -0,0 +1,27 @@
+// 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_dibextractor.h"
+
+#include "core/fxge/dib/cfx_dibsource.h"
+
+CFX_DIBExtractor::CFX_DIBExtractor(const CFX_RetainPtr<CFX_DIBSource>& pSrc) {
+  if (!pSrc->GetBuffer()) {
+    m_pBitmap = pSrc->Clone();
+    return;
+  }
+  CFX_RetainPtr<CFX_DIBSource> pOldSrc(pSrc);
+  m_pBitmap = pdfium::MakeRetain<CFX_DIBitmap>();
+  if (!m_pBitmap->Create(pOldSrc->GetWidth(), pOldSrc->GetHeight(),
+                         pOldSrc->GetFormat(), pOldSrc->GetBuffer())) {
+    m_pBitmap.Reset();
+    return;
+  }
+  m_pBitmap->SetPalette(pOldSrc->GetPalette());
+  m_pBitmap->SetAlphaMask(pOldSrc->m_pAlphaMask);
+}
+
+CFX_DIBExtractor::~CFX_DIBExtractor() {}