cfx_bitmapstorer.cpp

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// Copyright 2017 The PDFium Authors
// 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 <string.h>
 
#include <utility>
 
#include "core/fxcrt/span_util.h"
#include "core/fxge/dib/cfx_dibitmap.h"
#include "third_party/base/check_op.h"
 
CFX_BitmapStorer::CFX_BitmapStorer() = default;
 
CFX_BitmapStorer::~CFX_BitmapStorer() = default;
 
RetainPtr<CFX_DIBitmap> CFX_BitmapStorer::Detach() {
  return std::move(m_pBitmap);
}
 
void CFX_BitmapStorer::Replace(RetainPtr<CFX_DIBitmap>&& pBitmap) {
  m_pBitmap = std::move(pBitmap);
}
 
void CFX_BitmapStorer::ComposeScanline(int line,
                                       pdfium::span<const uint8_t> scanline) {
  pdfium::span<uint8_t> dest_buf = m_pBitmap->GetWritableScanline(line);
  if (!dest_buf.empty())
    fxcrt::spancpy(dest_buf, scanline);
}
 
bool CFX_BitmapStorer::SetInfo(int width,
                               int height,
                               FXDIB_Format src_format,
                               DataVector<uint32_t> src_palette) {
  DCHECK_NE(src_format, FXDIB_Format::k1bppMask);
  DCHECK_NE(src_format, FXDIB_Format::k1bppRgb);
  auto pBitmap = pdfium::MakeRetain<CFX_DIBitmap>();
  if (!pBitmap->Create(width, height, src_format))
    return false;
 
  if (!src_palette.empty()) {
    pBitmap->TakePalette(std::move(src_palette));
  }
 
  m_pBitmap = std::move(pBitmap);
  return true;
}