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// 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/fx_coordinates.h"
#include "core/fxcrt/maybe_owned.h"
#include "core/fxcrt/retain_ptr.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 RetainPtr<T> pdfium::MakeRetain(Args&&... args);
~CFX_DIBitmap() override;
bool Create(int width,
int height,
FXDIB_Format format,
uint8_t* pBuffer = nullptr,
uint32_t pitch = 0);
bool Copy(const 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(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 RetainPtr<CFX_DIBSource>& pSrcBitmap,
FXDIB_Channel srcChannel);
bool LoadChannel(FXDIB_Channel destChannel, int value);
bool MultiplyAlpha(int alpha);
bool MultiplyAlpha(const RetainPtr<CFX_DIBSource>& pAlphaMask);
bool TransferBitmap(int dest_left,
int dest_top,
int width,
int height,
const RetainPtr<CFX_DIBSource>& pSrcBitmap,
int src_left,
int src_top);
bool CompositeBitmap(int dest_left,
int dest_top,
int width,
int height,
const RetainPtr<CFX_DIBSource>& pSrcBitmap,
int src_left,
int src_top,
int blend_type = FXDIB_BLEND_NORMAL,
const CFX_ClipRgn* pClipRgn = nullptr,
bool bRgbByteOrder = false);
bool CompositeMask(int dest_left,
int dest_top,
int width,
int height,
const 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);
bool CompositeRect(int dest_left,
int dest_top,
int width,
int height,
uint32_t color,
int alpha_flag);
bool ConvertColorScale(uint32_t forecolor, uint32_t backcolor);
static bool CalculatePitchAndSize(int height,
int width,
FXDIB_Format format,
uint32_t* pitch,
uint32_t* size);
#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);
#if defined _SKIA_SUPPORT_PATHS_
enum class Format { kCleared, kPreMultiplied, kUnPreMultiplied };
#endif
MaybeOwned<uint8_t, FxFreeDeleter> m_pBuffer;
#if defined _SKIA_SUPPORT_PATHS_
Format m_nFormat;
#endif
private:
void ConvertRGBColorScale(uint32_t forecolor, uint32_t backcolor);
void ConvertCMYKColorScale(uint32_t forecolor, uint32_t backcolor);
};
#endif // CORE_FXGE_DIB_CFX_DIBITMAP_H_
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