Split fx_dib part 1

Move CFX_DIBSource to its own file. Also move the classes that inherit from it
to their own headers. Their cpp's will be added in followup.

Change-Id: Id2b53e124ea5445c558bfcf627bf526870cc92e8
Reviewed-on: https://pdfium-review.googlesource.com/3450
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: Nicolás Peña <npm@chromium.org>

1 files changed, 135 insertions, 0 deletions

diff --git a/core/fxge/dib/cfx_dibitmap.h b/core/fxge/dib/cfx_dibitmap.h
new file mode 100644
index 0000000000..9cb46afb53
--- /dev/null
+++ b/core/fxge/dib/cfx_dibitmap.h
@@ -0,0 +1,135 @@
+// 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_DIBITMAP_H_
+#define CORE_FXGE_DIB_CFX_DIBITMAP_H_
+
+#include "core/fxcrt/cfx_retain_ptr.h"
+#include "core/fxcrt/fx_basic.h"
+#include "core/fxcrt/fx_coordinates.h"
+#include "core/fxge/dib/cfx_dibsource.h"
+#include "third_party/base/stl_util.h"
+
+class CFX_DIBitmap : public CFX_DIBSource {
+ public:
+  template <typename T, typename... Args>
+  friend CFX_RetainPtr<T> pdfium::MakeRetain(Args&&... args);
+
+  ~CFX_DIBitmap() override;
+
+  bool Create(int width,
+              int height,
+              FXDIB_Format format,
+              uint8_t* pBuffer = nullptr,
+              int pitch = 0);
+
+  bool Copy(const CFX_RetainPtr<CFX_DIBSource>& pSrc);
+
+  // CFX_DIBSource
+  uint8_t* GetBuffer() const override;
+  const uint8_t* GetScanline(int line) const override;
+  void DownSampleScanline(int line,
+                          uint8_t* dest_scan,
+                          int dest_bpp,
+                          int dest_width,
+                          bool bFlipX,
+                          int clip_left,
+                          int clip_width) const override;
+
+  void TakeOver(CFX_RetainPtr<CFX_DIBitmap>&& pSrcBitmap);
+  bool ConvertFormat(FXDIB_Format format);
+  void Clear(uint32_t color);
+
+  uint32_t GetPixel(int x, int y) const;
+  void SetPixel(int x, int y, uint32_t color);
+
+  bool LoadChannel(FXDIB_Channel destChannel,
+                   const CFX_RetainPtr<CFX_DIBSource>& pSrcBitmap,
+                   FXDIB_Channel srcChannel);
+  bool LoadChannel(FXDIB_Channel destChannel, int value);
+
+  bool MultiplyAlpha(int alpha);
+  bool MultiplyAlpha(const CFX_RetainPtr<CFX_DIBSource>& pAlphaMask);
+
+  bool TransferBitmap(int dest_left,
+                      int dest_top,
+                      int width,
+                      int height,
+                      const CFX_RetainPtr<CFX_DIBSource>& pSrcBitmap,
+                      int src_left,
+                      int src_top);
+
+  bool CompositeBitmap(int dest_left,
+                       int dest_top,
+                       int width,
+                       int height,
+                       const CFX_RetainPtr<CFX_DIBSource>& pSrcBitmap,
+                       int src_left,
+                       int src_top,
+                       int blend_type = FXDIB_BLEND_NORMAL,
+                       const CFX_ClipRgn* pClipRgn = nullptr,
+                       bool bRgbByteOrder = false,
+                       void* pIccTransform = nullptr);
+
+  bool TransferMask(int dest_left,
+                    int dest_top,
+                    int width,
+                    int height,
+                    const CFX_RetainPtr<CFX_DIBSource>& pMask,
+                    uint32_t color,
+                    int src_left,
+                    int src_top,
+                    int alpha_flag = 0,
+                    void* pIccTransform = nullptr);
+
+  bool CompositeMask(int dest_left,
+                     int dest_top,
+                     int width,
+                     int height,
+                     const CFX_RetainPtr<CFX_DIBSource>& pMask,
+                     uint32_t color,
+                     int src_left,
+                     int src_top,
+                     int blend_type = FXDIB_BLEND_NORMAL,
+                     const CFX_ClipRgn* pClipRgn = nullptr,
+                     bool bRgbByteOrder = false,
+                     int alpha_flag = 0,
+                     void* pIccTransform = nullptr);
+
+  bool CompositeRect(int dest_left,
+                     int dest_top,
+                     int width,
+                     int height,
+                     uint32_t color,
+                     int alpha_flag = 0,
+                     void* pIccTransform = nullptr);
+
+  bool ConvertColorScale(uint32_t forecolor, uint32_t backcolor);
+
+#if defined _SKIA_SUPPORT_ || _SKIA_SUPPORT_PATHS_
+  void PreMultiply();
+#endif
+#if defined _SKIA_SUPPORT_PATHS_
+  void UnPreMultiply();
+#endif
+
+ protected:
+  CFX_DIBitmap();
+  CFX_DIBitmap(const CFX_DIBitmap& src);
+  bool GetGrayData(void* pIccTransform = nullptr);
+
+#if defined _SKIA_SUPPORT_PATHS_
+  enum class Format { kCleared, kPreMultiplied, kUnPreMultiplied };
+#endif
+
+  uint8_t* m_pBuffer;
+#if defined _SKIA_SUPPORT_PATHS_
+  Format m_nFormat;
+#endif
+  bool m_bExtBuf;
+};
+
+#endif  // CORE_FXGE_DIB_CFX_DIBITMAP_H_