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// Copyright 2014 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/include/fpdfapi/fpdf_resource.h"
#include "fpdfsdk/include/fxedit/fx_edit.h"
#include "fpdfsdk/include/fxedit/fxet_edit.h"
CFX_ByteString GetPDFWordString(IFX_Edit_FontMap* pFontMap,
int32_t nFontIndex,
FX_WORD Word,
FX_WORD SubWord) {
CFX_ByteString sWord;
if (CPDF_Font* pPDFFont = pFontMap->GetPDFFont(nFontIndex)) {
if (SubWord > 0) {
Word = SubWord;
} else {
FX_DWORD dwCharCode = -1;
if (pPDFFont->IsUnicodeCompatible())
dwCharCode = pPDFFont->CharCodeFromUnicode(Word);
else
dwCharCode = pFontMap->CharCodeFromUnicode(nFontIndex, Word);
if (dwCharCode > 0) {
pPDFFont->AppendChar(sWord, dwCharCode);
return sWord;
}
}
pPDFFont->AppendChar(sWord, Word);
}
return sWord;
}
static CFX_ByteString GetWordRenderString(const CFX_ByteString& strWords) {
if (strWords.GetLength() > 0)
return PDF_EncodeString(strWords) + " Tj\n";
return "";
}
static CFX_ByteString GetFontSetString(IFX_Edit_FontMap* pFontMap,
int32_t nFontIndex,
FX_FLOAT fFontSize) {
CFX_ByteTextBuf sRet;
if (pFontMap) {
CFX_ByteString sFontAlias = pFontMap->GetPDFFontAlias(nFontIndex);
if (sFontAlias.GetLength() > 0 && fFontSize > 0)
sRet << "/" << sFontAlias << " " << fFontSize << " Tf\n";
}
return sRet.GetByteString();
}
CFX_ByteString IFX_Edit::GetEditAppearanceStream(
IFX_Edit* pEdit,
const CFX_FloatPoint& ptOffset,
const CPVT_WordRange* pRange /* = NULL*/,
FX_BOOL bContinuous /* = TRUE*/,
FX_WORD SubWord /* = 0*/) {
CFX_ByteTextBuf sEditStream, sWords;
CFX_FloatPoint ptOld(0.0f, 0.0f), ptNew(0.0f, 0.0f);
int32_t nCurFontIndex = -1;
if (IFX_Edit_Iterator* pIterator = pEdit->GetIterator()) {
if (pRange)
pIterator->SetAt(pRange->BeginPos);
else
pIterator->SetAt(0);
CPVT_WordPlace oldplace;
while (pIterator->NextWord()) {
CPVT_WordPlace place = pIterator->GetAt();
if (pRange && place.WordCmp(pRange->EndPos) > 0)
break;
if (bContinuous) {
if (place.LineCmp(oldplace) != 0) {
if (sWords.GetSize() > 0) {
sEditStream << GetWordRenderString(sWords.GetByteString());
sWords.Clear();
}
CPVT_Word word;
if (pIterator->GetWord(word)) {
ptNew = CFX_FloatPoint(word.ptWord.x + ptOffset.x,
word.ptWord.y + ptOffset.y);
} else {
CPVT_Line line;
pIterator->GetLine(line);
ptNew = CFX_FloatPoint(line.ptLine.x + ptOffset.x,
line.ptLine.y + ptOffset.y);
}
if (ptNew.x != ptOld.x || ptNew.y != ptOld.y) {
sEditStream << ptNew.x - ptOld.x << " " << ptNew.y - ptOld.y
<< " Td\n";
ptOld = ptNew;
}
}
CPVT_Word word;
if (pIterator->GetWord(word)) {
if (word.nFontIndex != nCurFontIndex) {
if (sWords.GetSize() > 0) {
sEditStream << GetWordRenderString(sWords.GetByteString());
sWords.Clear();
}
sEditStream << GetFontSetString(pEdit->GetFontMap(),
word.nFontIndex, word.fFontSize);
nCurFontIndex = word.nFontIndex;
}
sWords << GetPDFWordString(pEdit->GetFontMap(), nCurFontIndex,
word.Word, SubWord);
}
oldplace = place;
} else {
CPVT_Word word;
if (pIterator->GetWord(word)) {
ptNew = CFX_FloatPoint(word.ptWord.x + ptOffset.x,
word.ptWord.y + ptOffset.y);
if (ptNew.x != ptOld.x || ptNew.y != ptOld.y) {
sEditStream << ptNew.x - ptOld.x << " " << ptNew.y - ptOld.y
<< " Td\n";
ptOld = ptNew;
}
if (word.nFontIndex != nCurFontIndex) {
sEditStream << GetFontSetString(pEdit->GetFontMap(),
word.nFontIndex, word.fFontSize);
nCurFontIndex = word.nFontIndex;
}
sEditStream << GetWordRenderString(GetPDFWordString(
pEdit->GetFontMap(), nCurFontIndex, word.Word, SubWord));
}
}
}
if (sWords.GetSize() > 0) {
sEditStream << GetWordRenderString(sWords.GetByteString());
sWords.Clear();
}
}
CFX_ByteTextBuf sAppStream;
if (sEditStream.GetSize() > 0) {
int32_t nHorzScale = pEdit->GetHorzScale();
if (nHorzScale != 100) {
sAppStream << nHorzScale << " Tz\n";
}
FX_FLOAT fCharSpace = pEdit->GetCharSpace();
if (!FX_EDIT_IsFloatZero(fCharSpace)) {
sAppStream << fCharSpace << " Tc\n";
}
sAppStream << sEditStream;
}
return sAppStream.GetByteString();
}
CFX_ByteString IFX_Edit::GetSelectAppearanceStream(
IFX_Edit* pEdit,
const CFX_FloatPoint& ptOffset,
const CPVT_WordRange* pRange) {
CFX_ByteTextBuf sRet;
if (pRange && pRange->IsExist()) {
if (IFX_Edit_Iterator* pIterator = pEdit->GetIterator()) {
pIterator->SetAt(pRange->BeginPos);
while (pIterator->NextWord()) {
CPVT_WordPlace place = pIterator->GetAt();
if (pRange && place.WordCmp(pRange->EndPos) > 0)
break;
CPVT_Word word;
CPVT_Line line;
if (pIterator->GetWord(word) && pIterator->GetLine(line)) {
sRet << word.ptWord.x + ptOffset.x << " "
<< line.ptLine.y + line.fLineDescent << " " << word.fWidth << " "
<< line.fLineAscent - line.fLineDescent << " re\nf\n";
}
}
}
}
return sRet.GetByteString();
}
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