1 files changed, 55 insertions, 0 deletions
diff --git a/core/fxge/dib/cfx_imagestretcher.h b/core/fxge/dib/cfx_imagestretcher.h
new file mode 100644
index 0000000000..785ef9b6cc
--- /dev/null
+++ b/core/fxge/dib/cfx_imagestretcher.h
@@ -0,0 +1,55 @@
+// 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
+
+#ifndef CORE_FXGE_DIB_CFX_IMAGESTRETCHER_H_
+#define CORE_FXGE_DIB_CFX_IMAGESTRETCHER_H_
+
+#include <memory>
+
+#include "core/fxcrt/cfx_retain_ptr.h"
+#include "core/fxcrt/fx_coordinates.h"
+#include "core/fxge/fx_dib.h"
+
+class CFX_DIBSource;
+
+class CFX_ImageStretcher {
+ public:
+  CFX_ImageStretcher(IFX_ScanlineComposer* pDest,
+                     const CFX_RetainPtr<CFX_DIBSource>& pSource,
+                     int dest_width,
+                     int dest_height,
+                     const FX_RECT& bitmap_rect,
+                     uint32_t flags);
+  ~CFX_ImageStretcher();
+
+  bool Start();
+  bool Continue(IFX_Pause* pPause);
+
+  CFX_RetainPtr<CFX_DIBSource> source() { return m_pSource; }
+
+ private:
+  bool StartQuickStretch();
+  bool StartStretch();
+  bool ContinueQuickStretch(IFX_Pause* pPause);
+  bool ContinueStretch(IFX_Pause* pPause);
+
+  IFX_ScanlineComposer* const m_pDest;
+  CFX_RetainPtr<CFX_DIBSource> m_pSource;
+  std::unique_ptr<CStretchEngine> m_pStretchEngine;
+  std::unique_ptr<uint8_t, FxFreeDeleter> m_pScanline;
+  std::unique_ptr<uint8_t, FxFreeDeleter> m_pMaskScanline;
+  const uint32_t m_Flags;
+  bool m_bFlipX;
+  bool m_bFlipY;
+  int m_DestWidth;
+  int m_DestHeight;
+  FX_RECT m_ClipRect;
+  const FXDIB_Format m_DestFormat;
+  const int m_DestBPP;
+  int m_LineIndex;
+};
+
+#endif  // CORE_FXGE_DIB_CFX_IMAGESTRETCHER_H_