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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 "constants/annotation_common.h"
#include "constants/annotation_flags.h"
#include "constants/form_fields.h"
#include "constants/form_flags.h"
#include "core/fpdfapi/page/cpdf_occontext.h"
#include "core/fpdfapi/page/cpdf_page.h"
#include "core/fpdfapi/parser/cpdf_array.h"
#include "core/fpdfapi/parser/cpdf_dictionary.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_generateap.h"
#include "core/fpdfdoc/cpdf_interactiveform.h"
#include "core/fxge/cfx_renderdevice.h"
namespace {
bool PopupAppearsForAnnotType(CPDF_Annot::Subtype subtype) {
switch (subtype) {
case CPDF_Annot::Subtype::TEXT:
case CPDF_Annot::Subtype::LINE:
case CPDF_Annot::Subtype::SQUARE:
case CPDF_Annot::Subtype::CIRCLE:
case CPDF_Annot::Subtype::POLYGON:
case CPDF_Annot::Subtype::POLYLINE:
case CPDF_Annot::Subtype::HIGHLIGHT:
case CPDF_Annot::Subtype::UNDERLINE:
case CPDF_Annot::Subtype::SQUIGGLY:
case CPDF_Annot::Subtype::STRIKEOUT:
case CPDF_Annot::Subtype::STAMP:
case CPDF_Annot::Subtype::CARET:
case CPDF_Annot::Subtype::INK:
case CPDF_Annot::Subtype::FILEATTACHMENT:
case CPDF_Annot::Subtype::REDACT:
return true;
case CPDF_Annot::Subtype::UNKNOWN:
case CPDF_Annot::Subtype::LINK:
case CPDF_Annot::Subtype::FREETEXT:
case CPDF_Annot::Subtype::POPUP:
case CPDF_Annot::Subtype::SOUND:
case CPDF_Annot::Subtype::MOVIE:
case CPDF_Annot::Subtype::WIDGET:
case CPDF_Annot::Subtype::SCREEN:
case CPDF_Annot::Subtype::PRINTERMARK:
case CPDF_Annot::Subtype::TRAPNET:
case CPDF_Annot::Subtype::WATERMARK:
case CPDF_Annot::Subtype::THREED:
case CPDF_Annot::Subtype::RICHMEDIA:
case CPDF_Annot::Subtype::XFAWIDGET:
default:
return false;
}
}
std::unique_ptr<CPDF_Annot> CreatePopupAnnot(CPDF_Document* pDocument,
CPDF_Page* pPage,
CPDF_Annot* pAnnot) {
if (!PopupAppearsForAnnotType(pAnnot->GetSubtype()))
return nullptr;
const 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(pdfium::annotation::kContents);
if (sContents.IsEmpty())
return nullptr;
auto pAnnotDict = pDocument->New<CPDF_Dictionary>();
pAnnotDict->SetNewFor<CPDF_Name>(pdfium::annotation::kType, "Annot");
pAnnotDict->SetNewFor<CPDF_Name>(pdfium::annotation::kSubtype, "Popup");
pAnnotDict->SetNewFor<CPDF_String>(
pdfium::form_fields::kT,
pParentDict->GetStringFor(pdfium::form_fields::kT), false);
pAnnotDict->SetNewFor<CPDF_String>(pdfium::annotation::kContents,
sContents.ToUTF8(), false);
CFX_FloatRect rect = pParentDict->GetRectFor(pdfium::annotation::kRect);
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(pdfium::annotation::kRect, popupRect);
pAnnotDict->SetNewFor<CPDF_Number>(pdfium::annotation::kF, 0);
auto pPopupAnnot = std::make_unique<CPDF_Annot>(pAnnotDict.Get(), pDocument);
pAnnot->SetPopupAnnot(pPopupAnnot.get());
return pPopupAnnot;
}
void GenerateAP(CPDF_Document* pDoc, CPDF_Dictionary* pAnnotDict) {
if (!pAnnotDict ||
pAnnotDict->GetStringFor(pdfium::annotation::kSubtype) != "Widget") {
return;
}
CPDF_Object* pFieldTypeObj =
CPDF_FormField::GetFieldAttr(pAnnotDict, pdfium::form_fields::kFT);
if (!pFieldTypeObj)
return;
ByteString field_type = pFieldTypeObj->GetString();
if (field_type == pdfium::form_fields::kTx) {
CPDF_GenerateAP::GenerateFormAP(pDoc, pAnnotDict,
CPDF_GenerateAP::kTextField);
return;
}
CPDF_Object* pFieldFlagsObj =
CPDF_FormField::GetFieldAttr(pAnnotDict, pdfium::form_fields::kFf);
uint32_t flags = pFieldFlagsObj ? pFieldFlagsObj->GetInteger() : 0;
if (field_type == pdfium::form_fields::kCh) {
auto type = (flags & pdfium::form_flags::kChoiceCombo)
? CPDF_GenerateAP::kComboBox
: CPDF_GenerateAP::kListBox;
CPDF_GenerateAP::GenerateFormAP(pDoc, pAnnotDict, type);
return;
}
if (field_type != pdfium::form_fields::kBtn)
return;
if (flags & pdfium::form_flags::kButtonPushbutton)
return;
if (pAnnotDict->KeyExist(pdfium::annotation::kAS))
return;
CPDF_Dictionary* pParentDict =
pAnnotDict->GetDictFor(pdfium::form_fields::kParent);
if (!pParentDict || !pParentDict->KeyExist(pdfium::annotation::kAS))
return;
pAnnotDict->SetNewFor<CPDF_String>(
pdfium::annotation::kAS,
pParentDict->GetStringFor(pdfium::annotation::kAS), false);
}
} // namespace
CPDF_AnnotList::CPDF_AnnotList(CPDF_Page* pPage)
: m_pDocument(pPage->GetDocument()) {
CPDF_Array* pAnnots = pPage->GetDict()->GetArrayFor("Annots");
if (!pAnnots)
return;
const CPDF_Dictionary* pRoot = m_pDocument->GetRoot();
const CPDF_Dictionary* pAcroForm = pRoot->GetDictFor("AcroForm");
bool bRegenerateAP =
pAcroForm && pAcroForm->GetBooleanFor("NeedAppearances", false);
for (size_t i = 0; i < pAnnots->size(); ++i) {
CPDF_Dictionary* pDict = ToDictionary(pAnnots->GetDirectObjectAt(i));
if (!pDict)
continue;
const ByteString subtype =
pDict->GetStringFor(pdfium::annotation::kSubtype);
if (subtype == "Popup") {
// Skip creating Popup annotations in the PDF document since PDFium
// provides its own Popup annotations.
continue;
}
pAnnots->ConvertToIndirectObjectAt(i, m_pDocument.Get());
m_AnnotList.push_back(
std::make_unique<CPDF_Annot>(pDict, m_pDocument.Get()));
if (bRegenerateAP && subtype == "Widget" &&
CPDF_InteractiveForm::IsUpdateAPEnabled() &&
!pDict->GetDictFor(pdfium::annotation::kAP)) {
GenerateAP(m_pDocument.Get(), pDict);
}
}
m_nAnnotCount = m_AnnotList.size();
for (size_t i = 0; i < m_nAnnotCount; ++i) {
std::unique_ptr<CPDF_Annot> pPopupAnnot =
CreatePopupAnnot(m_pDocument.Get(), pPage, m_AnnotList[i].get());
if (pPopupAnnot)
m_AnnotList.push_back(std::move(pPopupAnnot));
}
}
CPDF_AnnotList::~CPDF_AnnotList() {
// Move the pop-up annotations out of |m_AnnotList| into |popups|. Then
// destroy |m_AnnotList| first. This prevents dangling pointers to the pop-up
// annotations.
size_t nPopupCount = m_AnnotList.size() - m_nAnnotCount;
std::vector<std::unique_ptr<CPDF_Annot>> popups(nPopupCount);
for (size_t i = 0; i < nPopupCount; ++i)
popups[i] = std::move(m_AnnotList[m_nAnnotCount + i]);
m_AnnotList.clear();
}
void CPDF_AnnotList::DisplayPass(CPDF_Page* pPage,
CFX_RenderDevice* pDevice,
CPDF_RenderContext* pContext,
bool bPrinting,
const CFX_Matrix& mtMatrix,
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 & pdfium::annotation_flags::kHidden)
continue;
if (bPrinting && (annot_flags & pdfium::annotation_flags::kPrint) == 0)
continue;
if (!bPrinting && (annot_flags & pdfium::annotation_flags::kNoView))
continue;
if (pOptions) {
const CPDF_Dictionary* pAnnotDict = pAnnot->GetAnnotDict();
const CPDF_OCContext* pOCContext = pOptions->GetOCContext();
if (pAnnotDict && pOCContext &&
!pOCContext->CheckOCGVisible(
pAnnotDict->GetDictFor(pdfium::annotation::kOC))) {
continue;
}
}
CFX_Matrix matrix = mtMatrix;
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::AppearanceMode::kNormal);
} else if (!pAnnot->DrawAppearance(pPage, pDevice, matrix,
CPDF_Annot::AppearanceMode::kNormal,
pOptions)) {
pAnnot->DrawBorder(pDevice, &matrix, pOptions);
}
}
}
void CPDF_AnnotList::DisplayAnnots(CPDF_Page* pPage,
CFX_RenderDevice* pDevice,
CPDF_RenderContext* pContext,
bool bPrinting,
const CFX_Matrix& mtUser2Device,
uint32_t dwAnnotFlags,
CPDF_RenderOptions* pOptions,
FX_RECT* pClipRect) {
if (dwAnnotFlags & pdfium::annotation_flags::kInvisible) {
DisplayPass(pPage, pDevice, pContext, bPrinting, mtUser2Device, false,
pOptions, pClipRect);
}
if (dwAnnotFlags & pdfium::annotation_flags::kHidden) {
DisplayPass(pPage, pDevice, pContext, bPrinting, mtUser2Device, true,
pOptions, pClipRect);
}
}
void CPDF_AnnotList::DisplayAnnots(CPDF_Page* pPage,
CFX_RenderDevice* device,
CPDF_RenderContext* pContext,
bool bPrinting,
const CFX_Matrix& mtMatrix,
bool bShowWidget,
CPDF_RenderOptions* pOptions) {
uint32_t dwAnnotFlags = bShowWidget ? pdfium::annotation_flags::kInvisible |
pdfium::annotation_flags::kHidden
: pdfium::annotation_flags::kInvisible;
DisplayAnnots(pPage, device, pContext, bPrinting, mtMatrix, dwAnnotFlags,
pOptions, nullptr);
}