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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. http://www.foxitsoftware.com
#include "core/fpdfdoc/cpdf_annotlist.h"
#include <algorithm>
#include <memory>
#include <utility>
#include "core/fpdfapi/page/cpdf_page.h"
#include "core/fpdfapi/parser/cpdf_array.h"
#include "core/fpdfapi/parser/cpdf_document.h"
#include "core/fpdfapi/parser/cpdf_name.h"
#include "core/fpdfapi/parser/cpdf_number.h"
#include "core/fpdfapi/parser/cpdf_reference.h"
#include "core/fpdfapi/parser/cpdf_string.h"
#include "core/fpdfapi/render/cpdf_renderoptions.h"
#include "core/fpdfdoc/cpdf_annot.h"
#include "core/fpdfdoc/cpdf_formfield.h"
#include "core/fpdfdoc/cpdf_interform.h"
#include "core/fpdfdoc/cpdf_occontext.h"
#include "core/fpdfdoc/cpvt_generateap.h"
#include "core/fxge/cfx_renderdevice.h"
#include "third_party/base/ptr_util.h"
namespace {
std::unique_ptr<CPDF_Annot> CreatePopupAnnot(CPDF_Annot* pAnnot,
CPDF_Document* pDocument,
CPDF_Page* pPage) {
CPDF_Dictionary* pParentDict = pAnnot->GetAnnotDict();
if (!pParentDict)
return nullptr;
// TODO(jaepark): We shouldn't strip BOM for some strings and not for others.
// See pdfium:593.
WideString sContents = pParentDict->GetUnicodeTextFor("Contents");
if (sContents.IsEmpty())
return nullptr;
auto pAnnotDict =
pdfium::MakeUnique<CPDF_Dictionary>(pDocument->GetByteStringPool());
pAnnotDict->SetNewFor<CPDF_Name>("Type", "Annot");
pAnnotDict->SetNewFor<CPDF_Name>("Subtype", "Popup");
pAnnotDict->SetNewFor<CPDF_String>("T", pParentDict->GetStringFor("T"),
false);
pAnnotDict->SetNewFor<CPDF_String>("Contents", sContents.UTF8Encode(), false);
CFX_FloatRect rect = pParentDict->GetRectFor("Rect");
rect.Normalize();
CFX_FloatRect popupRect(0, 0, 200, 200);
// Note that if the popup can set its own dimensions, then we will need to
// make sure that it isn't larger than the page size.
if (rect.left + popupRect.Width() > pPage->GetPageWidth() &&
rect.bottom - popupRect.Height() < 0) {
// If the annotation is on the bottom-right corner of the page, then place
// the popup above and to the left of the annotation.
popupRect.Translate(rect.right - popupRect.Width(), rect.top);
} else {
// Place the popup below and to the right of the annotation without getting
// clipped by page edges.
popupRect.Translate(
std::min(rect.left, pPage->GetPageWidth() - popupRect.Width()),
std::max(rect.bottom - popupRect.Height(), 0.f));
}
pAnnotDict->SetRectFor("Rect", popupRect);
pAnnotDict->SetNewFor<CPDF_Number>("F", 0);
auto pPopupAnnot =
pdfium::MakeUnique<CPDF_Annot>(std::move(pAnnotDict), pDocument);
pAnnot->SetPopupAnnot(pPopupAnnot.get());
return pPopupAnnot;
}
void GenerateAP(CPDF_Document* pDoc, CPDF_Dictionary* pAnnotDict) {
if (!pAnnotDict || pAnnotDict->GetStringFor("Subtype") != "Widget")
return;
CPDF_Object* pFieldTypeObj = FPDF_GetFieldAttr(pAnnotDict, "FT");
if (!pFieldTypeObj)
return;
ByteString field_type = pFieldTypeObj->GetString();
if (field_type == "Tx") {
CPVT_GenerateAP::GenerateFormAP(CPVT_GenerateAP::kTextField, pDoc,
pAnnotDict);
return;
}
CPDF_Object* pFieldFlagsObj = FPDF_GetFieldAttr(pAnnotDict, "Ff");
uint32_t flags = pFieldFlagsObj ? pFieldFlagsObj->GetInteger() : 0;
if (field_type == "Ch") {
CPVT_GenerateAP::GenerateFormAP((flags & (1 << 17))
? CPVT_GenerateAP::kComboBox
: CPVT_GenerateAP::kListBox,
pDoc, pAnnotDict);
return;
}
if (field_type != "Btn")
return;
if (flags & (1 << 16))
return;
if (pAnnotDict->KeyExist("AS"))
return;
CPDF_Dictionary* pParentDict = pAnnotDict->GetDictFor("Parent");
if (!pParentDict || !pParentDict->KeyExist("AS"))
return;
pAnnotDict->SetNewFor<CPDF_String>("AS", pParentDict->GetStringFor("AS"),
false);
return;
}
} // namespace
CPDF_AnnotList::CPDF_AnnotList(CPDF_Page* pPage)
: m_pDocument(pPage->m_pDocument.Get()) {
if (!pPage->m_pFormDict)
return;
CPDF_Array* pAnnots = pPage->m_pFormDict->GetArrayFor("Annots");
if (!pAnnots)
return;
const CPDF_Dictionary* pRoot = m_pDocument->GetRoot();
CPDF_Dictionary* pAcroForm = pRoot->GetDictFor("AcroForm");
bool bRegenerateAP = pAcroForm && pAcroForm->GetBooleanFor("NeedAppearances");
for (size_t i = 0; i < pAnnots->GetCount(); ++i) {
CPDF_Dictionary* pDict = ToDictionary(pAnnots->GetDirectObjectAt(i));
if (!pDict)
continue;
const ByteString subtype = pDict->GetStringFor("Subtype");
if (subtype == "Popup") {
// Skip creating Popup annotations in the PDF document since PDFium
// provides its own Popup annotations.
continue;
}
pAnnots->ConvertToIndirectObjectAt(i, m_pDocument);
m_AnnotList.push_back(pdfium::MakeUnique<CPDF_Annot>(pDict, m_pDocument));
if (bRegenerateAP && subtype == "Widget" &&
CPDF_InterForm::IsUpdateAPEnabled() && !pDict->GetDictFor("AP")) {
GenerateAP(m_pDocument, pDict);
}
}
size_t nAnnotListSize = m_AnnotList.size();
for (size_t i = 0; i < nAnnotListSize; ++i) {
std::unique_ptr<CPDF_Annot> pPopupAnnot(
CreatePopupAnnot(m_AnnotList[i].get(), m_pDocument, pPage));
if (pPopupAnnot)
m_AnnotList.push_back(std::move(pPopupAnnot));
}
}
CPDF_AnnotList::~CPDF_AnnotList() {}
void CPDF_AnnotList::DisplayPass(CPDF_Page* pPage,
CFX_RenderDevice* pDevice,
CPDF_RenderContext* pContext,
bool bPrinting,
const CFX_Matrix* pMatrix,
bool bWidgetPass,
CPDF_RenderOptions* pOptions,
FX_RECT* clip_rect) {
for (const auto& pAnnot : m_AnnotList) {
bool bWidget = pAnnot->GetSubtype() == CPDF_Annot::Subtype::WIDGET;
if ((bWidgetPass && !bWidget) || (!bWidgetPass && bWidget))
continue;
uint32_t annot_flags = pAnnot->GetFlags();
if (annot_flags & ANNOTFLAG_HIDDEN)
continue;
if (bPrinting && (annot_flags & ANNOTFLAG_PRINT) == 0)
continue;
if (!bPrinting && (annot_flags & ANNOTFLAG_NOVIEW))
continue;
if (pOptions) {
CPDF_Dictionary* pAnnotDict = pAnnot->GetAnnotDict();
if (pOptions->GetOCContext() && pAnnotDict &&
!pOptions->GetOCContext()->CheckOCGVisible(
pAnnotDict->GetDictFor("OC"))) {
continue;
}
}
CFX_Matrix matrix = *pMatrix;
if (clip_rect) {
FX_RECT annot_rect =
matrix.TransformRect(pAnnot->GetRect()).GetOuterRect();
annot_rect.Intersect(*clip_rect);
if (annot_rect.IsEmpty())
continue;
}
if (pContext) {
pAnnot->DrawInContext(pPage, pContext, &matrix, CPDF_Annot::Normal);
} else if (!pAnnot->DrawAppearance(pPage, pDevice, matrix,
CPDF_Annot::Normal, pOptions)) {
pAnnot->DrawBorder(pDevice, &matrix, pOptions);
}
}
}
void CPDF_AnnotList::DisplayAnnots(CPDF_Page* pPage,
CFX_RenderDevice* pDevice,
CPDF_RenderContext* pContext,
bool bPrinting,
const CFX_Matrix* pUser2Device,
uint32_t dwAnnotFlags,
CPDF_RenderOptions* pOptions,
FX_RECT* pClipRect) {
if (dwAnnotFlags & ANNOTFLAG_INVISIBLE) {
DisplayPass(pPage, pDevice, pContext, bPrinting, pUser2Device, false,
pOptions, pClipRect);
}
if (dwAnnotFlags & ANNOTFLAG_HIDDEN) {
DisplayPass(pPage, pDevice, pContext, bPrinting, pUser2Device, true,
pOptions, pClipRect);
}
}
void CPDF_AnnotList::DisplayAnnots(CPDF_Page* pPage,
CPDF_RenderContext* pContext,
bool bPrinting,
const CFX_Matrix* pMatrix,
bool bShowWidget,
CPDF_RenderOptions* pOptions) {
uint32_t dwAnnotFlags = bShowWidget ? ANNOTFLAG_INVISIBLE | ANNOTFLAG_HIDDEN
: ANNOTFLAG_INVISIBLE;
DisplayAnnots(pPage, nullptr, pContext, bPrinting, pMatrix, dwAnnotFlags,
pOptions, nullptr);
}
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