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// Copyright 2016 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.
#include "core/fpdfapi/font/cpdf_type3char.h"
#include <utility>
#include "core/fpdfapi/page/cpdf_form.h"
#include "core/fpdfapi/page/cpdf_image.h"
#include "core/fpdfapi/page/cpdf_imageobject.h"
#include "core/fpdfapi/page/cpdf_pageobject.h"
#include "core/fxge/fx_dib.h"
CPDF_Type3Char::CPDF_Type3Char(std::unique_ptr<CPDF_Form> pForm)
: m_pForm(std::move(pForm)), m_bColored(false) {}
CPDF_Type3Char::~CPDF_Type3Char() {}
bool CPDF_Type3Char::LoadBitmap(CPDF_RenderContext* pContext) {
if (m_pBitmap || !m_pForm)
return true;
if (m_pForm->GetPageObjectList()->size() != 1 || m_bColored)
return false;
auto& pPageObj = m_pForm->GetPageObjectList()->front();
if (!pPageObj->IsImage())
return false;
m_ImageMatrix = pPageObj->AsImage()->matrix();
// |pSource| actually gets assigned a CPDF_DIBSource, which has pointers
// into objects owned by |m_pForm|. Make sure it is out of scope before
// clearing the form.
RetainPtr<CFX_DIBSource> pSource =
// Clone() is non-virtual, and can't be overloaded by CPDF_DIBSource to
// return a clone of the subclass as one would typically expect from a
// such a method. Instead, it only clones the CFX_DIBSource, none of whose
// members point to objects owned by the form. As a result, |m_pBitmap|
// may outlive |m_pForm|.
if (pSource)
m_pBitmap = pSource->Clone(nullptr);
return true;