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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
#include "public/fpdf_annot.h"
#include "core/fpdfapi/page/cpdf_page.h"
#include "core/fpdfapi/parser/cpdf_array.h"
#include "core/fpdfapi/parser/cpdf_dictionary.h"
#include "core/fpdfdoc/cpdf_annot.h"
#include "core/fpdfdoc/cpvt_color.h"
#include "core/fpdfdoc/cpvt_generateap.h"
#include "fpdfsdk/fsdk_define.h"
// These checks ensure the consistency of annotation subtype values across core/
// and public.
static_assert(static_cast<int>(CPDF_Annot::Subtype::UNKNOWN) ==
FPDF_ANNOT_UNKNOWN,
"CPDF_Annot::UNKNOWN value mismatch");
static_assert(static_cast<int>(CPDF_Annot::Subtype::TEXT) == FPDF_ANNOT_TEXT,
"CPDF_Annot::TEXT value mismatch");
static_assert(static_cast<int>(CPDF_Annot::Subtype::LINK) == FPDF_ANNOT_LINK,
"CPDF_Annot::LINK value mismatch");
static_assert(static_cast<int>(CPDF_Annot::Subtype::FREETEXT) ==
FPDF_ANNOT_FREETEXT,
"CPDF_Annot::FREETEXT value mismatch");
static_assert(static_cast<int>(CPDF_Annot::Subtype::LINE) == FPDF_ANNOT_LINE,
"CPDF_Annot::LINE value mismatch");
static_assert(static_cast<int>(CPDF_Annot::Subtype::SQUARE) ==
FPDF_ANNOT_SQUARE,
"CPDF_Annot::SQUARE value mismatch");
static_assert(static_cast<int>(CPDF_Annot::Subtype::CIRCLE) ==
FPDF_ANNOT_CIRCLE,
"CPDF_Annot::CIRCLE value mismatch");
static_assert(static_cast<int>(CPDF_Annot::Subtype::POLYGON) ==
FPDF_ANNOT_POLYGON,
"CPDF_Annot::POLYGON value mismatch");
static_assert(static_cast<int>(CPDF_Annot::Subtype::POLYLINE) ==
FPDF_ANNOT_POLYLINE,
"CPDF_Annot::POLYLINE value mismatch");
static_assert(static_cast<int>(CPDF_Annot::Subtype::HIGHLIGHT) ==
FPDF_ANNOT_HIGHLIGHT,
"CPDF_Annot::HIGHLIGHT value mismatch");
static_assert(static_cast<int>(CPDF_Annot::Subtype::UNDERLINE) ==
FPDF_ANNOT_UNDERLINE,
"CPDF_Annot::UNDERLINE value mismatch");
static_assert(static_cast<int>(CPDF_Annot::Subtype::SQUIGGLY) ==
FPDF_ANNOT_SQUIGGLY,
"CPDF_Annot::SQUIGGLY value mismatch");
static_assert(static_cast<int>(CPDF_Annot::Subtype::STRIKEOUT) ==
FPDF_ANNOT_STRIKEOUT,
"CPDF_Annot::STRIKEOUT value mismatch");
static_assert(static_cast<int>(CPDF_Annot::Subtype::STAMP) == FPDF_ANNOT_STAMP,
"CPDF_Annot::STAMP value mismatch");
static_assert(static_cast<int>(CPDF_Annot::Subtype::CARET) == FPDF_ANNOT_CARET,
"CPDF_Annot::CARET value mismatch");
static_assert(static_cast<int>(CPDF_Annot::Subtype::INK) == FPDF_ANNOT_INK,
"CPDF_Annot::INK value mismatch");
static_assert(static_cast<int>(CPDF_Annot::Subtype::POPUP) == FPDF_ANNOT_POPUP,
"CPDF_Annot::POPUP value mismatch");
static_assert(static_cast<int>(CPDF_Annot::Subtype::FILEATTACHMENT) ==
FPDF_ANNOT_FILEATTACHMENT,
"CPDF_Annot::FILEATTACHMENT value mismatch");
static_assert(static_cast<int>(CPDF_Annot::Subtype::SOUND) == FPDF_ANNOT_SOUND,
"CPDF_Annot::SOUND value mismatch");
static_assert(static_cast<int>(CPDF_Annot::Subtype::MOVIE) == FPDF_ANNOT_MOVIE,
"CPDF_Annot::MOVIE value mismatch");
static_assert(static_cast<int>(CPDF_Annot::Subtype::WIDGET) ==
FPDF_ANNOT_WIDGET,
"CPDF_Annot::WIDGET value mismatch");
static_assert(static_cast<int>(CPDF_Annot::Subtype::SCREEN) ==
FPDF_ANNOT_SCREEN,
"CPDF_Annot::SCREEN value mismatch");
static_assert(static_cast<int>(CPDF_Annot::Subtype::PRINTERMARK) ==
FPDF_ANNOT_PRINTERMARK,
"CPDF_Annot::PRINTERMARK value mismatch");
static_assert(static_cast<int>(CPDF_Annot::Subtype::TRAPNET) ==
FPDF_ANNOT_TRAPNET,
"CPDF_Annot::TRAPNET value mismatch");
static_assert(static_cast<int>(CPDF_Annot::Subtype::WATERMARK) ==
FPDF_ANNOT_WATERMARK,
"CPDF_Annot::WATERMARK value mismatch");
static_assert(static_cast<int>(CPDF_Annot::Subtype::THREED) ==
FPDF_ANNOT_THREED,
"CPDF_Annot::THREED value mismatch");
static_assert(static_cast<int>(CPDF_Annot::Subtype::RICHMEDIA) ==
FPDF_ANNOT_RICHMEDIA,
"CPDF_Annot::RICHMEDIA value mismatch");
static_assert(static_cast<int>(CPDF_Annot::Subtype::XFAWIDGET) ==
FPDF_ANNOT_XFAWIDGET,
"CPDF_Annot::XFAWIDGET value mismatch");
DLLEXPORT int STDCALL FPDFPage_GetAnnotCount(FPDF_PAGE page) {
CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
if (!pPage || !pPage->m_pFormDict)
return 0;
CPDF_Array* pAnnots = pPage->m_pFormDict->GetArrayFor("Annots");
return pAnnots ? pAnnots->GetCount() : 0;
}
DLLEXPORT FPDF_BOOL STDCALL FPDFPage_GetAnnot(FPDF_PAGE page,
int index,
FPDF_ANNOTATION* annot) {
CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
if (!pPage || !pPage->m_pFormDict || index < 0 || !annot)
return false;
CPDF_Array* pAnnots = pPage->m_pFormDict->GetArrayFor("Annots");
if (!pAnnots || static_cast<size_t>(index) >= pAnnots->GetCount())
return false;
CPDF_Dictionary* pDict = ToDictionary(pAnnots->GetDirectObjectAt(index));
*annot = FPDFAnnotationFromCPDFDictionary(pDict);
return *annot ? true : false;
}
DLLEXPORT FPDF_ANNOTATION_SUBTYPE STDCALL
FPDFAnnot_GetSubtype(FPDF_ANNOTATION annot) {
CPDF_Dictionary* pAnnotDict = CPDFDictionaryFromFPDFAnnotation(annot);
if (!pAnnotDict)
return FPDF_ANNOT_UNKNOWN;
return static_cast<FPDF_ANNOTATION_SUBTYPE>(
CPDF_Annot::StringToAnnotSubtype(pAnnotDict->GetStringFor("Subtype")));
}
DLLEXPORT FPDF_BOOL STDCALL FPDFAnnot_GetColor(FPDF_ANNOTATION annot,
FPDFANNOT_COLORTYPE type,
unsigned int* R,
unsigned int* G,
unsigned int* B,
unsigned int* A) {
CPDF_Dictionary* pAnnotDict = CPDFDictionaryFromFPDFAnnotation(annot);
if (!pAnnotDict || !R || !G || !B || !A)
return false;
CPDF_Array* pColor = pAnnotDict->GetArrayFor(
type == FPDFANNOT_COLORTYPE_InteriorColor ? "IC" : "C");
*A =
(pAnnotDict->KeyExist("CA") ? pAnnotDict->GetNumberFor("CA") : 1) * 255.f;
if (!pColor) {
// Use default color. The default colors must be consistent with the ones
// used to generate AP. See calls to GetColorStringWithDefault() in
// CPVT_GenerateAP::Generate*AP().
if (pAnnotDict->GetStringFor("Subtype") == "Highlight") {
*R = 255;
*G = 255;
*B = 0;
} else {
*R = 0;
*G = 0;
*B = 0;
}
return true;
}
CPVT_Color color = CPVT_Color::ParseColor(*pColor);
switch (color.nColorType) {
case CPVT_Color::kRGB:
*R = color.fColor1 * 255.f;
*G = color.fColor2 * 255.f;
*B = color.fColor3 * 255.f;
break;
case CPVT_Color::kGray:
*R = 255.f * color.fColor1;
*G = 255.f * color.fColor1;
*B = 255.f * color.fColor1;
break;
case CPVT_Color::kCMYK:
*R = 255.f * (1 - color.fColor1) * (1 - color.fColor4);
*G = 255.f * (1 - color.fColor2) * (1 - color.fColor4);
*B = 255.f * (1 - color.fColor3) * (1 - color.fColor4);
break;
case CPVT_Color::kTransparent:
*R = 0;
*G = 0;
*B = 0;
break;
}
return true;
}
DLLEXPORT FPDF_BOOL STDCALL
FPDFAnnot_HasAttachmentPoints(FPDF_ANNOTATION annot) {
if (!annot)
return false;
FPDF_ANNOTATION_SUBTYPE subtype = FPDFAnnot_GetSubtype(annot);
return subtype == FPDF_ANNOT_LINK || subtype == FPDF_ANNOT_HIGHLIGHT ||
subtype == FPDF_ANNOT_UNDERLINE || subtype == FPDF_ANNOT_SQUIGGLY ||
subtype == FPDF_ANNOT_STRIKEOUT;
}
DLLEXPORT FPDF_BOOL STDCALL
FPDFAnnot_GetAttachmentPoints(FPDF_ANNOTATION annot,
FS_QUADPOINTSF* quadPoints) {
if (!annot || !quadPoints || !FPDFAnnot_HasAttachmentPoints(annot))
return false;
CPDF_Array* pArray =
CPDFDictionaryFromFPDFAnnotation(annot)->GetArrayFor("QuadPoints");
if (!pArray)
return false;
quadPoints->x1 = pArray->GetNumberAt(0);
quadPoints->y1 = pArray->GetNumberAt(1);
quadPoints->x2 = pArray->GetNumberAt(2);
quadPoints->y2 = pArray->GetNumberAt(3);
quadPoints->x3 = pArray->GetNumberAt(4);
quadPoints->y3 = pArray->GetNumberAt(5);
quadPoints->x4 = pArray->GetNumberAt(6);
quadPoints->y4 = pArray->GetNumberAt(7);
return true;
}
DLLEXPORT FPDF_BOOL STDCALL FPDFAnnot_GetRect(FPDF_ANNOTATION annot,
FS_RECTF* rect) {
CPDF_Dictionary* pAnnotDict = CPDFDictionaryFromFPDFAnnotation(annot);
if (!rect || !pAnnotDict)
return false;
CFX_FloatRect rt = pAnnotDict->GetRectFor("Rect");
rect->left = rt.left;
rect->bottom = rt.bottom;
rect->right = rt.right;
rect->top = rt.top;
return true;
}
DLLEXPORT unsigned long STDCALL FPDFAnnot_GetText(FPDF_ANNOTATION annot,
FPDFANNOT_TEXTTYPE type,
char* buffer,
unsigned long buflen) {
CPDF_Dictionary* pAnnotDict = CPDFDictionaryFromFPDFAnnotation(annot);
if (!pAnnotDict)
return 0;
CFX_ByteString key = type == FPDFANNOT_TEXTTYPE_Author ? "T" : "Contents";
CFX_ByteString contents = pAnnotDict->GetUnicodeTextFor(key).UTF16LE_Encode();
unsigned long len = contents.GetLength();
if (buffer && buflen >= len)
memcpy(buffer, contents.c_str(), len);
return len;
}
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