// Copyright 2014 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#include <algorithm>
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#include <cctype>
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#include <cwctype>
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#include <memory>
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#include <utility>
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#include <vector>
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#include "core/fpdfapi/fpdf_font/include/cpdf_font.h"
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#include "core/fpdfapi/fpdf_page/include/cpdf_form.h"
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#include "core/fpdfapi/fpdf_page/include/cpdf_formobject.h"
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#include "core/fpdfapi/fpdf_page/include/cpdf_page.h"
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#include "core/fpdfapi/fpdf_page/include/cpdf_pageobject.h"
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#include "core/fpdfapi/fpdf_page/include/cpdf_textobject.h"
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#include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h"
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#include "core/fpdfapi/fpdf_parser/include/cpdf_string.h"
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#include "core/fpdftext/include/cpdf_linkextract.h"
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#include "core/fpdftext/include/cpdf_textpage.h"
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#include "core/fpdftext/include/cpdf_textpagefind.h"
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#include "core/fpdftext/unicodenormalizationdata.h"
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#include "core/fxcrt/fx_bidi.h"
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#include "core/fxcrt/include/fx_ext.h"
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#include "core/fxcrt/include/fx_ucd.h"
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#include "third_party/base/stl_util.h"
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#define FPDFTEXT_MATCHCASE 0x00000001
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#define FPDFTEXT_MATCHWHOLEWORD 0x00000002
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#define FPDFTEXT_CONSECUTIVE 0x00000004
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#define FPDFTEXT_CHAR_ERROR -1
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#define FPDFTEXT_CHAR_NORMAL 0
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#define FPDFTEXT_CHAR_GENERATED 1
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#define FPDFTEXT_CHAR_UNUNICODE 2
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#define FPDFTEXT_CHAR_HYPHEN 3
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#define FPDFTEXT_CHAR_PIECE 4
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#define TEXT_SPACE_CHAR L' '
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#define TEXT_LINEFEED_CHAR L'\n'
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#define TEXT_RETURN_CHAR L'\r'
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#define TEXT_EMPTY L""
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#define TEXT_SPACE L" "
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#define TEXT_RETURN_LINEFEED L"\r\n"
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#define TEXT_LINEFEED L"\n"
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#define TEXT_CHARRATIO_GAPDELTA 0.070
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namespace {
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const FX_FLOAT kDefaultFontSize = 1.0f;
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const uint16_t* const g_UnicodeData_Normalization_Maps[5] = {
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nullptr, g_UnicodeData_Normalization_Map1, g_UnicodeData_Normalization_Map2,
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g_UnicodeData_Normalization_Map3, g_UnicodeData_Normalization_Map4};
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FX_BOOL IsIgnoreSpaceCharacter(FX_WCHAR curChar) {
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if (curChar < 255) {
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return FALSE;
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}
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if ((curChar >= 0x0600 && curChar <= 0x06FF) ||
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(curChar >= 0xFE70 && curChar <= 0xFEFF) ||
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(curChar >= 0xFB50 && curChar <= 0xFDFF) ||
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(curChar >= 0x0400 && curChar <= 0x04FF) ||
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(curChar >= 0x0500 && curChar <= 0x052F) ||
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(curChar >= 0xA640 && curChar <= 0xA69F) ||
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(curChar >= 0x2DE0 && curChar <= 0x2DFF) || curChar == 8467 ||
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(curChar >= 0x2000 && curChar <= 0x206F)) {
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return FALSE;
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}
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return TRUE;
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}
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FX_FLOAT NormalizeThreshold(FX_FLOAT threshold) {
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if (threshold < 300) {
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return threshold / 2.0f;
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}
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if (threshold < 500) {
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return threshold / 4.0f;
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}
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if (threshold < 700) {
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return threshold / 5.0f;
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}
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return threshold / 6.0f;
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}
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FX_FLOAT CalculateBaseSpace(const CPDF_TextObject* pTextObj,
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const CFX_Matrix& matrix) {
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FX_FLOAT baseSpace = 0.0;
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const int nItems = pTextObj->CountItems();
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if (pTextObj->m_TextState.GetObject()->m_CharSpace && nItems >= 3) {
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FX_BOOL bAllChar = TRUE;
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FX_FLOAT spacing = matrix.TransformDistance(
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pTextObj->m_TextState.GetObject()->m_CharSpace);
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baseSpace = spacing;
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for (int i = 0; i < nItems; i++) {
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CPDF_TextObjectItem item;
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pTextObj->GetItemInfo(i, &item);
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if (item.m_CharCode == (uint32_t)-1) {
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FX_FLOAT fontsize_h = pTextObj->m_TextState.GetFontSizeH();
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FX_FLOAT kerning = -fontsize_h * item.m_OriginX / 1000;
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baseSpace = std::min(baseSpace, kerning + spacing);
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bAllChar = FALSE;
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}
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}
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if (baseSpace < 0.0 || (nItems == 3 && !bAllChar)) {
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baseSpace = 0.0;
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}
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}
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return baseSpace;
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}
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FX_STRSIZE Unicode_GetNormalization(FX_WCHAR wch, FX_WCHAR* pDst) {
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wch = wch & 0xFFFF;
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FX_WCHAR wFind = g_UnicodeData_Normalization[wch];
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if (!wFind) {
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if (pDst) {
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*pDst = wch;
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}
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return 1;
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}
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if (wFind >= 0x8000) {
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wch = wFind - 0x8000;
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wFind = 1;
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} else {
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wch = wFind & 0x0FFF;
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wFind >>= 12;
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}
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const uint16_t* pMap = g_UnicodeData_Normalization_Maps[wFind];
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if (pMap == g_UnicodeData_Normalization_Map4) {
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pMap = g_UnicodeData_Normalization_Map4 + wch;
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wFind = (FX_WCHAR)(*pMap++);
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} else {
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pMap += wch;
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}
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if (pDst) {
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FX_WCHAR n = wFind;
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while (n--) {
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*pDst++ = *pMap++;
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}
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}
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return (FX_STRSIZE)wFind;
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}
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float MaskPercentFilled(const std::vector<bool>& mask,
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int32_t start,
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int32_t end) {
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if (start >= end)
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return 0;
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float count = std::count_if(mask.begin() + start, mask.begin() + end,
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[](bool r) { return r; });
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return count / (end - start);
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}
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} // namespace
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CPDF_TextPage::CPDF_TextPage(const CPDF_Page* pPage, FPDFText_Direction flags)
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: m_pPage(pPage),
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m_parserflag(flags),
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m_pPreTextObj(nullptr),
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m_bIsParsed(false),
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m_TextlineDir(TextOrientation::Unknown) {
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m_TextBuf.EstimateSize(0, 10240);
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pPage->GetDisplayMatrix(m_DisplayMatrix, 0, 0, (int)pPage->GetPageWidth(),
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(int)pPage->GetPageHeight(), 0);
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}
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CPDF_TextPage::~CPDF_TextPage() {}
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bool CPDF_TextPage::IsControlChar(const PAGECHAR_INFO& charInfo) {
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switch (charInfo.m_Unicode) {
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case 0x2:
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case 0x3:
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case 0x93:
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case 0x94:
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case 0x96:
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case 0x97:
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case 0x98:
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case 0xfffe:
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return charInfo.m_Flag != FPDFTEXT_CHAR_HYPHEN;
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default:
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return false;
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}
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}
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void CPDF_TextPage::ParseTextPage() {
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m_bIsParsed = false;
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m_TextBuf.Clear();
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m_CharList.clear();
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m_pPreTextObj = nullptr;
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ProcessObject();
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m_bIsParsed = true;
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m_CharIndex.clear();
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int nCount = pdfium::CollectionSize<int>(m_CharList);
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if (nCount)
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m_CharIndex.push_back(0);
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for (int i = 0; i < nCount; i++) {
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int indexSize = pdfium::CollectionSize<int>(m_CharIndex);
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const PAGECHAR_INFO& charinfo = m_CharList[i];
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if (charinfo.m_Flag == FPDFTEXT_CHAR_GENERATED ||
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(charinfo.m_Unicode != 0 && !IsControlChar(charinfo))) {
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if (indexSize % 2) {
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m_CharIndex.push_back(1);
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} else {
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if (indexSize <= 0)
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continue;
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m_CharIndex[indexSize - 1] += 1;
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}
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} else {
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if (indexSize % 2) {
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if (indexSize <= 0)
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continue;
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m_CharIndex[indexSize - 1] = i + 1;
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} else {
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m_CharIndex.push_back(i + 1);
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}
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}
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}
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int indexSize = pdfium::CollectionSize<int>(m_CharIndex);
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if (indexSize % 2)
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m_CharIndex.erase(m_CharIndex.begin() + indexSize - 1);
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}
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int CPDF_TextPage::CountChars() const {
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return pdfium::CollectionSize<int>(m_CharList);
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}
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int CPDF_TextPage::CharIndexFromTextIndex(int TextIndex) const {
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int indexSize = pdfium::CollectionSize<int>(m_CharIndex);
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int count = 0;
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for (int i = 0; i < indexSize; i += 2) {
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count += m_CharIndex[i + 1];
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if (count > TextIndex)
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return TextIndex - count + m_CharIndex[i + 1] + m_CharIndex[i];
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}
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return -1;
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}
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int CPDF_TextPage::TextIndexFromCharIndex(int CharIndex) const {
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int indexSize = pdfium::CollectionSize<int>(m_CharIndex);
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int count = 0;
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for (int i = 0; i < indexSize; i += 2) {
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count += m_CharIndex[i + 1];
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if (m_CharIndex[i + 1] + m_CharIndex[i] > CharIndex) {
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if (CharIndex - m_CharIndex[i] < 0)
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return -1;
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return CharIndex - m_CharIndex[i] + count - m_CharIndex[i + 1];
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}
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}
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return -1;
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}
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std::vector<CFX_FloatRect> CPDF_TextPage::GetRectArray(int start,
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int nCount) const {
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if (start < 0 || nCount == 0 || !m_bIsParsed)
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return std::vector<CFX_FloatRect>();
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if (nCount + start > pdfium::CollectionSize<int>(m_CharList) ||
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nCount == -1) {
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nCount = pdfium::CollectionSize<int>(m_CharList) - start;
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}
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std::vector<CFX_FloatRect> rectArray;
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CPDF_TextObject* pCurObj = nullptr;
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CFX_FloatRect rect;
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int curPos = start;
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FX_BOOL flagNewRect = TRUE;
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while (nCount--) {
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PAGECHAR_INFO info_curchar = m_CharList[curPos++];
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if (info_curchar.m_Flag == FPDFTEXT_CHAR_GENERATED) {
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continue;
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}
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if (info_curchar.m_CharBox.Width() < 0.01 ||
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info_curchar.m_CharBox.Height() < 0.01) {
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continue;
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}
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if (!pCurObj) {
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pCurObj = info_curchar.m_pTextObj;
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}
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if (pCurObj != info_curchar.m_pTextObj) {
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rectArray.push_back(rect);
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pCurObj = info_curchar.m_pTextObj;
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flagNewRect = TRUE;
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}
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if (flagNewRect) {
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FX_FLOAT orgX = info_curchar.m_OriginX, orgY = info_curchar.m_OriginY;
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CFX_Matrix matrix, matrix_reverse;
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info_curchar.m_pTextObj->GetTextMatrix(&matrix);
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matrix.Concat(info_curchar.m_Matrix);
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matrix_reverse.SetReverse(matrix);
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matrix_reverse.Transform(orgX, orgY);
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rect.left = info_curchar.m_CharBox.left;
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rect.right = info_curchar.m_CharBox.right;
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if (pCurObj->GetFont()->GetTypeDescent()) {
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rect.bottom = orgY +
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pCurObj->GetFont()->GetTypeDescent() *
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pCurObj->GetFontSize() / 1000;
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FX_FLOAT xPosTemp = orgX;
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matrix.Transform(xPosTemp, rect.bottom);
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} else {
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rect.bottom = info_curchar.m_CharBox.bottom;
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}
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if (pCurObj->GetFont()->GetTypeAscent()) {
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rect.top =
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orgY +
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pCurObj->GetFont()->GetTypeAscent() * pCurObj->GetFontSize() / 1000;
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FX_FLOAT xPosTemp =
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orgX +
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GetCharWidth(info_curchar.m_CharCode, pCurObj->GetFont()) *
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pCurObj->GetFontSize() / 1000;
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matrix.Transform(xPosTemp, rect.top);
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} else {
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rect.top = info_curchar.m_CharBox.top;
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}
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flagNewRect = FALSE;
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rect = info_curchar.m_CharBox;
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rect.Normalize();
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} else {
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info_curchar.m_CharBox.Normalize();
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if (rect.left > info_curchar.m_CharBox.left) {
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rect.left = info_curchar.m_CharBox.left;
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}
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if (rect.right < info_curchar.m_CharBox.right) {
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rect.right = info_curchar.m_CharBox.right;
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}
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if (rect.top < info_curchar.m_CharBox.top) {
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rect.top = info_curchar.m_CharBox.top;
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}
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if (rect.bottom > info_curchar.m_CharBox.bottom) {
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rect.bottom = info_curchar.m_CharBox.bottom;
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}
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}
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}
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rectArray.push_back(rect);
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return rectArray;
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}
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int CPDF_TextPage::GetIndexAtPos(CFX_FloatPoint point,
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FX_FLOAT xTolerance,
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FX_FLOAT yTolerance) const {
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if (!m_bIsParsed)
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return -3;
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int pos = 0;
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int NearPos = -1;
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double xdif = 5000;
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double ydif = 5000;
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while (pos < pdfium::CollectionSize<int>(m_CharList)) {
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PAGECHAR_INFO charinfo = m_CharList[pos];
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CFX_FloatRect charrect = charinfo.m_CharBox;
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if (charrect.Contains(point.x, point.y)) {
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break;
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}
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if (xTolerance > 0 || yTolerance > 0) {
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CFX_FloatRect charRectExt;
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charrect.Normalize();
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charRectExt.left = charrect.left - xTolerance / 2;
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charRectExt.right = charrect.right + xTolerance / 2;
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charRectExt.top = charrect.top + yTolerance / 2;
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charRectExt.bottom = charrect.bottom - yTolerance / 2;
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if (charRectExt.Contains(point.x, point.y)) {
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double curXdif, curYdif;
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curXdif = FXSYS_fabs(point.x - charrect.left) <
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FXSYS_fabs(point.x - charrect.right)
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? FXSYS_fabs(point.x - charrect.left)
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: FXSYS_fabs(point.x - charrect.right);
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curYdif = FXSYS_fabs(point.y - charrect.bottom) <
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FXSYS_fabs(point.y - charrect.top)
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? FXSYS_fabs(point.y - charrect.bottom)
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: FXSYS_fabs(point.y - charrect.top);
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if (curYdif + curXdif < xdif + ydif) {
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ydif = curYdif;
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xdif = curXdif;
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NearPos = pos;
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}
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}
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}
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++pos;
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}
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return pos < pdfium::CollectionSize<int>(m_CharList) ? pos : NearPos;
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}
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CFX_WideString CPDF_TextPage::GetTextByRect(const CFX_FloatRect& rect) const {
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if (!m_bIsParsed)
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return CFX_WideString();
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FX_FLOAT posy = 0;
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bool IsContainPreChar = false;
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bool IsAddLineFeed = false;
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CFX_WideString strText;
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for (const auto& charinfo : m_CharList) {
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if (IsRectIntersect(rect, charinfo.m_CharBox)) {
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if (FXSYS_fabs(posy - charinfo.m_OriginY) > 0 && !IsContainPreChar &&
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IsAddLineFeed) {
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posy = charinfo.m_OriginY;
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if (strText.GetLength() > 0) {
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strText += L"\r\n";
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}
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}
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IsContainPreChar = true;
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IsAddLineFeed = false;
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if (charinfo.m_Unicode) {
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strText += charinfo.m_Unicode;
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}
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} else if (charinfo.m_Unicode == 32) {
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if (IsContainPreChar && charinfo.m_Unicode) {
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strText += charinfo.m_Unicode;
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IsContainPreChar = false;
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IsAddLineFeed = false;
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}
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} else {
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IsContainPreChar = false;
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IsAddLineFeed = true;
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}
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}
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return strText;
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}
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std::vector<CFX_FloatRect> CPDF_TextPage::GetRectsArrayByRect(
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const CFX_FloatRect& rect) const {
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if (!m_bIsParsed)
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return std::vector<CFX_FloatRect>();
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CFX_FloatRect curRect;
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std::vector<CFX_FloatRect> result;
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bool flagNewRect = true;
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CPDF_TextObject* pCurObj = nullptr;
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for (auto info_curchar : m_CharList) {
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if (info_curchar.m_Flag == FPDFTEXT_CHAR_GENERATED) {
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continue;
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}
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if (!IsRectIntersect(rect, info_curchar.m_CharBox)) {
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continue;
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}
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if (!pCurObj) {
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pCurObj = info_curchar.m_pTextObj;
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}
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if (pCurObj != info_curchar.m_pTextObj) {
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result.push_back(curRect);
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pCurObj = info_curchar.m_pTextObj;
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flagNewRect = true;
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}
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if (flagNewRect) {
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curRect = info_curchar.m_CharBox;
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curRect.Normalize();
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flagNewRect = false;
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} else {
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info_curchar.m_CharBox.Normalize();
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curRect.left = std::min(curRect.left, info_curchar.m_CharBox.left);
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curRect.bottom = std::min(curRect.bottom, info_curchar.m_CharBox.bottom);
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curRect.right = std::max(curRect.right, info_curchar.m_CharBox.right);
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curRect.top = std::max(curRect.top, info_curchar.m_CharBox.top);
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}
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}
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result.push_back(curRect);
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return result;
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}
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int CPDF_TextPage::GetIndexAtPos(FX_FLOAT x,
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FX_FLOAT y,
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FX_FLOAT xTolerance,
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FX_FLOAT yTolerance) const {
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CFX_FloatPoint point(x, y);
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return GetIndexAtPos(point, xTolerance, yTolerance);
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}
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void CPDF_TextPage::GetCharInfo(int index, FPDF_CHAR_INFO* info) const {
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if (!m_bIsParsed)
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return;
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if (index < 0 || index >= pdfium::CollectionSize<int>(m_CharList))
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return;
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const PAGECHAR_INFO& charinfo = m_CharList[index];
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info->m_Charcode = charinfo.m_CharCode;
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info->m_OriginX = charinfo.m_OriginX;
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info->m_OriginY = charinfo.m_OriginY;
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info->m_Unicode = charinfo.m_Unicode;
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info->m_Flag = charinfo.m_Flag;
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info->m_CharBox = charinfo.m_CharBox;
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info->m_pTextObj = charinfo.m_pTextObj;
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if (charinfo.m_pTextObj && charinfo.m_pTextObj->GetFont()) {
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info->m_FontSize = charinfo.m_pTextObj->GetFontSize();
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} else {
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info->m_FontSize = kDefaultFontSize;
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}
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info->m_Matrix.Copy(charinfo.m_Matrix);
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}
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void CPDF_TextPage::CheckMarkedContentObject(int32_t& start,
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int32_t& nCount) const {
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PAGECHAR_INFO charinfo = m_CharList[start];
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PAGECHAR_INFO charinfo2 = m_CharList[start + nCount - 1];
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if (FPDFTEXT_CHAR_PIECE != charinfo.m_Flag &&
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FPDFTEXT_CHAR_PIECE != charinfo2.m_Flag) {
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return;
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}
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if (FPDFTEXT_CHAR_PIECE == charinfo.m_Flag) {
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PAGECHAR_INFO charinfo1 = charinfo;
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int startIndex = start;
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while (FPDFTEXT_CHAR_PIECE == charinfo1.m_Flag &&
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charinfo1.m_Index == charinfo.m_Index) {
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startIndex--;
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if (startIndex < 0) {
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break;
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}
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charinfo1 = m_CharList[startIndex];
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}
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startIndex++;
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start = startIndex;
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}
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if (FPDFTEXT_CHAR_PIECE == charinfo2.m_Flag) {
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PAGECHAR_INFO charinfo3 = charinfo2;
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int endIndex = start + nCount - 1;
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while (FPDFTEXT_CHAR_PIECE == charinfo3.m_Flag &&
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charinfo3.m_Index == charinfo2.m_Index) {
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endIndex++;
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if (endIndex >= pdfium::CollectionSize<int>(m_CharList)) {
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break;
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}
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charinfo3 = m_CharList[endIndex];
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}
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endIndex--;
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nCount = endIndex - start + 1;
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}
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}
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CFX_WideString CPDF_TextPage::GetPageText(int start, int nCount) const {
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if (!m_bIsParsed || nCount == 0)
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return L"";
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if (start < 0)
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start = 0;
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if (nCount == -1) {
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nCount = pdfium::CollectionSize<int>(m_CharList) - start;
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return CFX_WideString(
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m_TextBuf.AsStringC().Mid(start, m_TextBuf.AsStringC().GetLength()));
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}
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if (nCount <= 0 || m_CharList.empty()) {
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return L"";
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}
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if (nCount + start > pdfium::CollectionSize<int>(m_CharList) - 1) {
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nCount = pdfium::CollectionSize<int>(m_CharList) - start;
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}
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if (nCount <= 0) {
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return L"";
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}
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CheckMarkedContentObject(start, nCount);
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int startindex = 0;
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PAGECHAR_INFO charinfo = m_CharList[start];
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int startOffset = 0;
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while (charinfo.m_Index == -1) {
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startOffset++;
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if (startOffset > nCount ||
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start + startOffset >= pdfium::CollectionSize<int>(m_CharList)) {
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return L"";
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}
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charinfo = m_CharList[start + startOffset];
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}
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startindex = charinfo.m_Index;
|
charinfo = m_CharList[start + nCount - 1];
|
int nCountOffset = 0;
|
while (charinfo.m_Index == -1) {
|
nCountOffset++;
|
if (nCountOffset >= nCount) {
|
return L"";
|
}
|
charinfo = m_CharList[start + nCount - nCountOffset - 1];
|
}
|
nCount = start + nCount - nCountOffset - startindex;
|
if (nCount <= 0) {
|
return L"";
|
}
|
return CFX_WideString(m_TextBuf.AsStringC().Mid(startindex, nCount));
|
}
|
|
int CPDF_TextPage::CountRects(int start, int nCount) {
|
if (!m_bIsParsed || start < 0)
|
return -1;
|
|
if (nCount == -1 ||
|
nCount + start > pdfium::CollectionSize<int>(m_CharList)) {
|
nCount = pdfium::CollectionSize<int>(m_CharList) - start;
|
}
|
m_SelRects = GetRectArray(start, nCount);
|
return pdfium::CollectionSize<int>(m_SelRects);
|
}
|
|
void CPDF_TextPage::GetRect(int rectIndex,
|
FX_FLOAT& left,
|
FX_FLOAT& top,
|
FX_FLOAT& right,
|
FX_FLOAT& bottom) const {
|
if (!m_bIsParsed)
|
return;
|
|
if (rectIndex < 0 || rectIndex >= pdfium::CollectionSize<int>(m_SelRects))
|
return;
|
|
left = m_SelRects[rectIndex].left;
|
top = m_SelRects[rectIndex].top;
|
right = m_SelRects[rectIndex].right;
|
bottom = m_SelRects[rectIndex].bottom;
|
}
|
|
int CPDF_TextPage::CountBoundedSegments(FX_FLOAT left,
|
FX_FLOAT top,
|
FX_FLOAT right,
|
FX_FLOAT bottom,
|
FX_BOOL bContains) {
|
m_Segments.RemoveAll();
|
if (!m_bIsParsed)
|
return -1;
|
|
CFX_FloatRect rect(left, bottom, right, top);
|
rect.Normalize();
|
|
FPDF_SEGMENT segment;
|
segment.m_Start = 0;
|
segment.m_nCount = 0;
|
|
int pos = 0;
|
int segmentStatus = 0;
|
FX_BOOL IsContainPreChar = FALSE;
|
for (const auto& charinfo : m_CharList) {
|
if (bContains && rect.Contains(charinfo.m_CharBox)) {
|
if (segmentStatus == 0 || segmentStatus == 2) {
|
segment.m_Start = pos;
|
segment.m_nCount = 1;
|
segmentStatus = 1;
|
} else if (segmentStatus == 1) {
|
segment.m_nCount++;
|
}
|
IsContainPreChar = TRUE;
|
} else if (!bContains &&
|
(IsRectIntersect(rect, charinfo.m_CharBox) ||
|
rect.Contains(charinfo.m_OriginX, charinfo.m_OriginY))) {
|
if (segmentStatus == 0 || segmentStatus == 2) {
|
segment.m_Start = pos;
|
segment.m_nCount = 1;
|
segmentStatus = 1;
|
} else if (segmentStatus == 1) {
|
segment.m_nCount++;
|
}
|
IsContainPreChar = TRUE;
|
} else if (charinfo.m_Unicode == 32) {
|
if (IsContainPreChar == TRUE) {
|
if (segmentStatus == 0 || segmentStatus == 2) {
|
segment.m_Start = pos;
|
segment.m_nCount = 1;
|
segmentStatus = 1;
|
} else if (segmentStatus == 1) {
|
segment.m_nCount++;
|
}
|
IsContainPreChar = FALSE;
|
} else {
|
if (segmentStatus == 1) {
|
segmentStatus = 2;
|
m_Segments.Add(segment);
|
segment.m_Start = 0;
|
segment.m_nCount = 0;
|
}
|
}
|
} else {
|
if (segmentStatus == 1) {
|
segmentStatus = 2;
|
m_Segments.Add(segment);
|
segment.m_Start = 0;
|
segment.m_nCount = 0;
|
}
|
IsContainPreChar = FALSE;
|
}
|
pos++;
|
}
|
if (segmentStatus == 1) {
|
segmentStatus = 2;
|
m_Segments.Add(segment);
|
segment.m_Start = 0;
|
segment.m_nCount = 0;
|
}
|
return m_Segments.GetSize();
|
}
|
|
CPDF_TextPage::TextOrientation CPDF_TextPage::FindTextlineFlowOrientation()
|
const {
|
if (m_pPage->GetPageObjectList()->empty())
|
return TextOrientation::Unknown;
|
|
const int32_t nPageWidth = static_cast<int32_t>(m_pPage->GetPageWidth());
|
const int32_t nPageHeight = static_cast<int32_t>(m_pPage->GetPageHeight());
|
std::vector<bool> nHorizontalMask(nPageWidth);
|
std::vector<bool> nVerticalMask(nPageHeight);
|
FX_FLOAT fLineHeight = 0.0f;
|
int32_t nStartH = nPageWidth;
|
int32_t nEndH = 0;
|
int32_t nStartV = nPageHeight;
|
int32_t nEndV = 0;
|
for (const auto& pPageObj : *m_pPage->GetPageObjectList()) {
|
if (!pPageObj->IsText())
|
continue;
|
|
int32_t minH = std::max(static_cast<int32_t>(pPageObj->m_Left), 0);
|
int32_t maxH =
|
std::min(static_cast<int32_t>(pPageObj->m_Right), nPageWidth);
|
int32_t minV = std::max(static_cast<int32_t>(pPageObj->m_Bottom), 0);
|
int32_t maxV = std::min(static_cast<int32_t>(pPageObj->m_Top), nPageHeight);
|
if (minH >= maxH || minV >= maxV)
|
continue;
|
|
for (int32_t i = minH; i < maxH; ++i)
|
nHorizontalMask[i] = true;
|
for (int32_t i = minV; i < maxV; ++i)
|
nVerticalMask[i] = true;
|
|
nStartH = std::min(nStartH, minH);
|
nEndH = std::max(nEndH, maxH);
|
nStartV = std::min(nStartV, minV);
|
nEndV = std::max(nEndV, maxV);
|
|
if (fLineHeight <= 0.0f)
|
fLineHeight = pPageObj->m_Top - pPageObj->m_Bottom;
|
}
|
const int32_t nDoubleLineHeight = 2 * fLineHeight;
|
if ((nEndV - nStartV) < nDoubleLineHeight)
|
return TextOrientation::Horizontal;
|
if ((nEndH - nStartH) < nDoubleLineHeight)
|
return TextOrientation::Vertical;
|
|
const FX_FLOAT nSumH = MaskPercentFilled(nHorizontalMask, nStartH, nEndH);
|
if (nSumH > 0.8f)
|
return TextOrientation::Horizontal;
|
|
const FX_FLOAT nSumV = MaskPercentFilled(nVerticalMask, nStartV, nEndV);
|
if (nSumH > nSumV)
|
return TextOrientation::Horizontal;
|
if (nSumH < nSumV)
|
return TextOrientation::Vertical;
|
return TextOrientation::Unknown;
|
}
|
|
void CPDF_TextPage::AppendGeneratedCharacter(FX_WCHAR unicode,
|
const CFX_Matrix& formMatrix) {
|
PAGECHAR_INFO generateChar;
|
if (!GenerateCharInfo(unicode, generateChar))
|
return;
|
|
m_TextBuf.AppendChar(unicode);
|
if (!formMatrix.IsIdentity())
|
generateChar.m_Matrix.Copy(formMatrix);
|
m_CharList.push_back(generateChar);
|
}
|
|
void CPDF_TextPage::ProcessObject() {
|
if (m_pPage->GetPageObjectList()->empty())
|
return;
|
|
m_TextlineDir = FindTextlineFlowOrientation();
|
const CPDF_PageObjectList* pObjList = m_pPage->GetPageObjectList();
|
for (auto it = pObjList->begin(); it != pObjList->end(); ++it) {
|
if (CPDF_PageObject* pObj = it->get()) {
|
if (pObj->IsText()) {
|
CFX_Matrix matrix;
|
ProcessTextObject(pObj->AsText(), matrix, pObjList, it);
|
} else if (pObj->IsForm()) {
|
CFX_Matrix formMatrix(1, 0, 0, 1, 0, 0);
|
ProcessFormObject(pObj->AsForm(), formMatrix);
|
}
|
}
|
}
|
for (int i = 0; i < m_LineObj.GetSize(); i++)
|
ProcessTextObject(m_LineObj.GetAt(i));
|
|
m_LineObj.RemoveAll();
|
CloseTempLine();
|
}
|
|
void CPDF_TextPage::ProcessFormObject(CPDF_FormObject* pFormObj,
|
const CFX_Matrix& formMatrix) {
|
CPDF_PageObjectList* pObjectList = pFormObj->m_pForm->GetPageObjectList();
|
if (pObjectList->empty())
|
return;
|
|
CFX_Matrix curFormMatrix;
|
curFormMatrix.Copy(pFormObj->m_FormMatrix);
|
curFormMatrix.Concat(formMatrix);
|
|
for (auto it = pObjectList->begin(); it != pObjectList->end(); ++it) {
|
if (CPDF_PageObject* pPageObj = it->get()) {
|
if (pPageObj->IsText()) {
|
ProcessTextObject(pPageObj->AsText(), curFormMatrix, pObjectList, it);
|
} else if (pPageObj->IsForm()) {
|
ProcessFormObject(pPageObj->AsForm(), curFormMatrix);
|
}
|
}
|
}
|
}
|
|
int CPDF_TextPage::GetCharWidth(uint32_t charCode, CPDF_Font* pFont) const {
|
if (charCode == CPDF_Font::kInvalidCharCode)
|
return 0;
|
|
if (int w = pFont->GetCharWidthF(charCode))
|
return w;
|
|
CFX_ByteString str;
|
pFont->AppendChar(str, charCode);
|
if (int w = pFont->GetStringWidth(str.c_str(), 1))
|
return w;
|
|
return pFont->GetCharBBox(charCode).Width();
|
}
|
|
void CPDF_TextPage::AddCharInfoByLRDirection(FX_WCHAR wChar,
|
PAGECHAR_INFO info) {
|
if (IsControlChar(info)) {
|
info.m_Index = -1;
|
m_CharList.push_back(info);
|
return;
|
}
|
|
info.m_Index = m_TextBuf.GetLength();
|
if (wChar >= 0xFB00 && wChar <= 0xFB06) {
|
FX_WCHAR* pDst = nullptr;
|
FX_STRSIZE nCount = Unicode_GetNormalization(wChar, pDst);
|
if (nCount >= 1) {
|
pDst = FX_Alloc(FX_WCHAR, nCount);
|
Unicode_GetNormalization(wChar, pDst);
|
for (int nIndex = 0; nIndex < nCount; nIndex++) {
|
PAGECHAR_INFO info2 = info;
|
info2.m_Unicode = pDst[nIndex];
|
info2.m_Flag = FPDFTEXT_CHAR_PIECE;
|
m_TextBuf.AppendChar(info2.m_Unicode);
|
m_CharList.push_back(info2);
|
}
|
FX_Free(pDst);
|
return;
|
}
|
}
|
m_TextBuf.AppendChar(wChar);
|
m_CharList.push_back(info);
|
}
|
|
void CPDF_TextPage::AddCharInfoByRLDirection(FX_WCHAR wChar,
|
PAGECHAR_INFO info) {
|
if (IsControlChar(info)) {
|
info.m_Index = -1;
|
m_CharList.push_back(info);
|
return;
|
}
|
|
info.m_Index = m_TextBuf.GetLength();
|
wChar = FX_GetMirrorChar(wChar, TRUE, FALSE);
|
FX_WCHAR* pDst = nullptr;
|
FX_STRSIZE nCount = Unicode_GetNormalization(wChar, pDst);
|
if (nCount >= 1) {
|
pDst = FX_Alloc(FX_WCHAR, nCount);
|
Unicode_GetNormalization(wChar, pDst);
|
for (int nIndex = 0; nIndex < nCount; nIndex++) {
|
PAGECHAR_INFO info2 = info;
|
info2.m_Unicode = pDst[nIndex];
|
info2.m_Flag = FPDFTEXT_CHAR_PIECE;
|
m_TextBuf.AppendChar(info2.m_Unicode);
|
m_CharList.push_back(info2);
|
}
|
FX_Free(pDst);
|
return;
|
}
|
info.m_Unicode = wChar;
|
m_TextBuf.AppendChar(info.m_Unicode);
|
m_CharList.push_back(info);
|
}
|
|
void CPDF_TextPage::CloseTempLine() {
|
if (m_TempCharList.empty())
|
return;
|
|
CFX_WideString str = m_TempTextBuf.MakeString();
|
FX_BOOL bPrevSpace = FALSE;
|
for (int i = 0; i < str.GetLength(); i++) {
|
if (str.GetAt(i) != ' ') {
|
bPrevSpace = FALSE;
|
continue;
|
}
|
if (bPrevSpace) {
|
m_TempTextBuf.Delete(i, 1);
|
m_TempCharList.erase(m_TempCharList.begin() + i);
|
str.Delete(i);
|
i--;
|
}
|
bPrevSpace = TRUE;
|
}
|
CFX_BidiString bidi(str);
|
if (m_parserflag == FPDFText_Direction::Right)
|
bidi.SetOverallDirectionRight();
|
CFX_BidiChar::Direction eCurrentDirection = bidi.OverallDirection();
|
for (const auto& segment : bidi) {
|
if (segment.direction == CFX_BidiChar::RIGHT ||
|
(segment.direction == CFX_BidiChar::NEUTRAL &&
|
eCurrentDirection == CFX_BidiChar::RIGHT)) {
|
eCurrentDirection = CFX_BidiChar::RIGHT;
|
for (int m = segment.start + segment.count; m > segment.start; --m)
|
AddCharInfoByRLDirection(bidi.CharAt(m - 1), m_TempCharList[m - 1]);
|
} else {
|
eCurrentDirection = CFX_BidiChar::LEFT;
|
for (int m = segment.start; m < segment.start + segment.count; m++)
|
AddCharInfoByLRDirection(bidi.CharAt(m), m_TempCharList[m]);
|
}
|
}
|
m_TempCharList.clear();
|
m_TempTextBuf.Delete(0, m_TempTextBuf.GetLength());
|
}
|
|
void CPDF_TextPage::ProcessTextObject(
|
CPDF_TextObject* pTextObj,
|
const CFX_Matrix& formMatrix,
|
const CPDF_PageObjectList* pObjList,
|
CPDF_PageObjectList::const_iterator ObjPos) {
|
CFX_FloatRect re(pTextObj->m_Left, pTextObj->m_Bottom, pTextObj->m_Right,
|
pTextObj->m_Top);
|
if (FXSYS_fabs(pTextObj->m_Right - pTextObj->m_Left) < 0.01f) {
|
return;
|
}
|
int count = m_LineObj.GetSize();
|
PDFTEXT_Obj Obj;
|
Obj.m_pTextObj = pTextObj;
|
Obj.m_formMatrix = formMatrix;
|
if (count == 0) {
|
m_LineObj.Add(Obj);
|
return;
|
}
|
if (IsSameAsPreTextObject(pTextObj, pObjList, ObjPos)) {
|
return;
|
}
|
PDFTEXT_Obj prev_Obj = m_LineObj.GetAt(count - 1);
|
CPDF_TextObjectItem item;
|
int nItem = prev_Obj.m_pTextObj->CountItems();
|
prev_Obj.m_pTextObj->GetItemInfo(nItem - 1, &item);
|
FX_FLOAT prev_width =
|
GetCharWidth(item.m_CharCode, prev_Obj.m_pTextObj->GetFont()) *
|
prev_Obj.m_pTextObj->GetFontSize() / 1000;
|
CFX_Matrix prev_matrix;
|
prev_Obj.m_pTextObj->GetTextMatrix(&prev_matrix);
|
prev_width = FXSYS_fabs(prev_width);
|
prev_matrix.Concat(prev_Obj.m_formMatrix);
|
prev_width = prev_matrix.TransformDistance(prev_width);
|
pTextObj->GetItemInfo(0, &item);
|
FX_FLOAT this_width = GetCharWidth(item.m_CharCode, pTextObj->GetFont()) *
|
pTextObj->GetFontSize() / 1000;
|
this_width = FXSYS_fabs(this_width);
|
CFX_Matrix this_matrix;
|
pTextObj->GetTextMatrix(&this_matrix);
|
this_width = FXSYS_fabs(this_width);
|
this_matrix.Concat(formMatrix);
|
this_width = this_matrix.TransformDistance(this_width);
|
FX_FLOAT threshold =
|
prev_width > this_width ? prev_width / 4 : this_width / 4;
|
FX_FLOAT prev_x = prev_Obj.m_pTextObj->GetPosX(),
|
prev_y = prev_Obj.m_pTextObj->GetPosY();
|
prev_Obj.m_formMatrix.Transform(prev_x, prev_y);
|
m_DisplayMatrix.Transform(prev_x, prev_y);
|
FX_FLOAT this_x = pTextObj->GetPosX(), this_y = pTextObj->GetPosY();
|
formMatrix.Transform(this_x, this_y);
|
m_DisplayMatrix.Transform(this_x, this_y);
|
if (FXSYS_fabs(this_y - prev_y) > threshold * 2) {
|
for (int i = 0; i < count; i++) {
|
ProcessTextObject(m_LineObj.GetAt(i));
|
}
|
m_LineObj.RemoveAll();
|
m_LineObj.Add(Obj);
|
return;
|
}
|
int i = 0;
|
for (i = count - 1; i >= 0; i--) {
|
PDFTEXT_Obj prev_text_obj = m_LineObj.GetAt(i);
|
FX_FLOAT Prev_x = prev_text_obj.m_pTextObj->GetPosX(),
|
Prev_y = prev_text_obj.m_pTextObj->GetPosY();
|
prev_text_obj.m_formMatrix.Transform(Prev_x, Prev_y);
|
m_DisplayMatrix.Transform(Prev_x, Prev_y);
|
if (this_x >= Prev_x) {
|
if (i == count - 1)
|
m_LineObj.Add(Obj);
|
else
|
m_LineObj.InsertAt(i + 1, Obj);
|
break;
|
}
|
}
|
if (i < 0) {
|
m_LineObj.InsertAt(0, Obj);
|
}
|
}
|
|
FPDFText_MarkedContent CPDF_TextPage::PreMarkedContent(PDFTEXT_Obj Obj) {
|
CPDF_TextObject* pTextObj = Obj.m_pTextObj;
|
const CPDF_ContentMarkData* pMarkData = pTextObj->m_ContentMark.GetObject();
|
if (!pMarkData)
|
return FPDFText_MarkedContent::Pass;
|
|
int nContentMark = pMarkData->CountItems();
|
if (nContentMark < 1)
|
return FPDFText_MarkedContent::Pass;
|
|
CFX_WideString actText;
|
FX_BOOL bExist = FALSE;
|
CPDF_Dictionary* pDict = nullptr;
|
int n = 0;
|
for (n = 0; n < nContentMark; n++) {
|
const CPDF_ContentMarkItem& item = pMarkData->GetItem(n);
|
if (item.GetParamType() == CPDF_ContentMarkItem::ParamType::None)
|
continue;
|
pDict = item.GetParam();
|
CPDF_String* temp =
|
ToString(pDict ? pDict->GetObjectBy("ActualText") : nullptr);
|
if (temp) {
|
bExist = TRUE;
|
actText = temp->GetUnicodeText();
|
}
|
}
|
if (!bExist)
|
return FPDFText_MarkedContent::Pass;
|
|
if (m_pPreTextObj) {
|
const CPDF_ContentMarkData* pPreMarkData =
|
m_pPreTextObj->m_ContentMark.GetObject();
|
if (pPreMarkData && pPreMarkData->CountItems() == n &&
|
pDict == pPreMarkData->GetItem(n - 1).GetParam()) {
|
return FPDFText_MarkedContent::Done;
|
}
|
}
|
FX_STRSIZE nItems = actText.GetLength();
|
if (nItems < 1)
|
return FPDFText_MarkedContent::Pass;
|
|
CPDF_Font* pFont = pTextObj->GetFont();
|
bExist = FALSE;
|
for (FX_STRSIZE i = 0; i < nItems; i++) {
|
if (pFont->CharCodeFromUnicode(actText.GetAt(i)) !=
|
CPDF_Font::kInvalidCharCode) {
|
bExist = TRUE;
|
break;
|
}
|
}
|
if (!bExist)
|
return FPDFText_MarkedContent::Pass;
|
|
bExist = FALSE;
|
for (FX_STRSIZE i = 0; i < nItems; i++) {
|
FX_WCHAR wChar = actText.GetAt(i);
|
if ((wChar > 0x80 && wChar < 0xFFFD) || (wChar <= 0x80 && isprint(wChar))) {
|
bExist = TRUE;
|
break;
|
}
|
}
|
if (!bExist)
|
return FPDFText_MarkedContent::Done;
|
|
return FPDFText_MarkedContent::Delay;
|
}
|
|
void CPDF_TextPage::ProcessMarkedContent(PDFTEXT_Obj Obj) {
|
CPDF_TextObject* pTextObj = Obj.m_pTextObj;
|
const CPDF_ContentMarkData* pMarkData = pTextObj->m_ContentMark.GetObject();
|
if (!pMarkData)
|
return;
|
|
int nContentMark = pMarkData->CountItems();
|
if (nContentMark < 1)
|
return;
|
CFX_WideString actText;
|
CPDF_Dictionary* pDict = nullptr;
|
for (int n = 0; n < nContentMark; n++) {
|
const CPDF_ContentMarkItem& item = pMarkData->GetItem(n);
|
if (item.GetParamType() == CPDF_ContentMarkItem::ParamType::None)
|
continue;
|
pDict = item.GetParam();
|
if (pDict)
|
actText = pDict->GetUnicodeTextBy("ActualText");
|
}
|
FX_STRSIZE nItems = actText.GetLength();
|
if (nItems < 1)
|
return;
|
|
CPDF_Font* pFont = pTextObj->GetFont();
|
CFX_Matrix formMatrix = Obj.m_formMatrix;
|
CFX_Matrix matrix;
|
pTextObj->GetTextMatrix(&matrix);
|
matrix.Concat(formMatrix);
|
FX_FLOAT fPosX = pTextObj->GetPosX();
|
FX_FLOAT fPosY = pTextObj->GetPosY();
|
int nCharInfoIndex = m_TextBuf.GetLength();
|
CFX_FloatRect charBox;
|
charBox.top = pTextObj->m_Top;
|
charBox.left = pTextObj->m_Left;
|
charBox.right = pTextObj->m_Right;
|
charBox.bottom = pTextObj->m_Bottom;
|
for (FX_STRSIZE k = 0; k < nItems; k++) {
|
FX_WCHAR wChar = actText.GetAt(k);
|
if (wChar <= 0x80 && !isprint(wChar)) {
|
wChar = 0x20;
|
}
|
if (wChar >= 0xFFFD) {
|
continue;
|
}
|
PAGECHAR_INFO charinfo;
|
charinfo.m_OriginX = fPosX;
|
charinfo.m_OriginY = fPosY;
|
charinfo.m_Index = nCharInfoIndex;
|
charinfo.m_Unicode = wChar;
|
charinfo.m_CharCode = pFont->CharCodeFromUnicode(wChar);
|
charinfo.m_Flag = FPDFTEXT_CHAR_PIECE;
|
charinfo.m_pTextObj = pTextObj;
|
charinfo.m_CharBox.top = charBox.top;
|
charinfo.m_CharBox.left = charBox.left;
|
charinfo.m_CharBox.right = charBox.right;
|
charinfo.m_CharBox.bottom = charBox.bottom;
|
charinfo.m_Matrix.Copy(matrix);
|
m_TempTextBuf.AppendChar(wChar);
|
m_TempCharList.push_back(charinfo);
|
}
|
}
|
|
void CPDF_TextPage::FindPreviousTextObject() {
|
if (m_TempCharList.empty() && m_CharList.empty())
|
return;
|
|
PAGECHAR_INFO preChar =
|
m_TempCharList.empty() ? m_CharList.back() : m_TempCharList.back();
|
|
if (preChar.m_pTextObj)
|
m_pPreTextObj = preChar.m_pTextObj;
|
}
|
|
void CPDF_TextPage::SwapTempTextBuf(int32_t iCharListStartAppend,
|
int32_t iBufStartAppend) {
|
int32_t i = iCharListStartAppend;
|
int32_t j = pdfium::CollectionSize<int32_t>(m_TempCharList) - 1;
|
for (; i < j; i++, j--) {
|
std::swap(m_TempCharList[i], m_TempCharList[j]);
|
std::swap(m_TempCharList[i].m_Index, m_TempCharList[j].m_Index);
|
}
|
FX_WCHAR* pTempBuffer = m_TempTextBuf.GetBuffer();
|
i = iBufStartAppend;
|
j = m_TempTextBuf.GetLength() - 1;
|
for (; i < j; i++, j--) {
|
std::swap(pTempBuffer[i], pTempBuffer[j]);
|
}
|
}
|
|
FX_BOOL CPDF_TextPage::IsRightToLeft(const CPDF_TextObject* pTextObj,
|
const CPDF_Font* pFont,
|
int nItems) const {
|
CFX_WideString str;
|
for (int32_t i = 0; i < nItems; i++) {
|
CPDF_TextObjectItem item;
|
pTextObj->GetItemInfo(i, &item);
|
if (item.m_CharCode == (uint32_t)-1) {
|
continue;
|
}
|
CFX_WideString wstrItem = pFont->UnicodeFromCharCode(item.m_CharCode);
|
FX_WCHAR wChar = wstrItem.GetAt(0);
|
if ((wstrItem.IsEmpty() || wChar == 0) && item.m_CharCode) {
|
wChar = (FX_WCHAR)item.m_CharCode;
|
}
|
if (wChar)
|
str += wChar;
|
}
|
return CFX_BidiString(str).OverallDirection() == CFX_BidiChar::RIGHT;
|
}
|
|
void CPDF_TextPage::ProcessTextObject(PDFTEXT_Obj Obj) {
|
CPDF_TextObject* pTextObj = Obj.m_pTextObj;
|
if (FXSYS_fabs(pTextObj->m_Right - pTextObj->m_Left) < 0.01f) {
|
return;
|
}
|
CFX_Matrix formMatrix = Obj.m_formMatrix;
|
CPDF_Font* pFont = pTextObj->GetFont();
|
CFX_Matrix matrix;
|
pTextObj->GetTextMatrix(&matrix);
|
matrix.Concat(formMatrix);
|
FPDFText_MarkedContent ePreMKC = PreMarkedContent(Obj);
|
if (ePreMKC == FPDFText_MarkedContent::Done) {
|
m_pPreTextObj = pTextObj;
|
m_perMatrix.Copy(formMatrix);
|
return;
|
}
|
GenerateCharacter result = GenerateCharacter::None;
|
if (m_pPreTextObj) {
|
result = ProcessInsertObject(pTextObj, formMatrix);
|
if (result == GenerateCharacter::LineBreak) {
|
m_CurlineRect =
|
CFX_FloatRect(Obj.m_pTextObj->m_Left, Obj.m_pTextObj->m_Bottom,
|
Obj.m_pTextObj->m_Right, Obj.m_pTextObj->m_Top);
|
} else {
|
m_CurlineRect.Union(
|
CFX_FloatRect(Obj.m_pTextObj->m_Left, Obj.m_pTextObj->m_Bottom,
|
Obj.m_pTextObj->m_Right, Obj.m_pTextObj->m_Top));
|
}
|
switch (result) {
|
case GenerateCharacter::None:
|
break;
|
case GenerateCharacter::Space: {
|
PAGECHAR_INFO generateChar;
|
if (GenerateCharInfo(TEXT_SPACE_CHAR, generateChar)) {
|
if (!formMatrix.IsIdentity())
|
generateChar.m_Matrix.Copy(formMatrix);
|
m_TempTextBuf.AppendChar(TEXT_SPACE_CHAR);
|
m_TempCharList.push_back(generateChar);
|
}
|
break;
|
}
|
case GenerateCharacter::LineBreak:
|
CloseTempLine();
|
if (m_TextBuf.GetSize()) {
|
AppendGeneratedCharacter(TEXT_RETURN_CHAR, formMatrix);
|
AppendGeneratedCharacter(TEXT_LINEFEED_CHAR, formMatrix);
|
}
|
break;
|
case GenerateCharacter::Hyphen:
|
if (pTextObj->CountChars() == 1) {
|
CPDF_TextObjectItem item;
|
pTextObj->GetCharInfo(0, &item);
|
CFX_WideString wstrItem =
|
pTextObj->GetFont()->UnicodeFromCharCode(item.m_CharCode);
|
if (wstrItem.IsEmpty()) {
|
wstrItem += (FX_WCHAR)item.m_CharCode;
|
}
|
FX_WCHAR curChar = wstrItem.GetAt(0);
|
if (curChar == 0x2D || curChar == 0xAD)
|
return;
|
}
|
while (m_TempTextBuf.GetSize() > 0 &&
|
m_TempTextBuf.AsStringC().GetAt(m_TempTextBuf.GetLength() - 1) ==
|
0x20) {
|
m_TempTextBuf.Delete(m_TempTextBuf.GetLength() - 1, 1);
|
m_TempCharList.pop_back();
|
}
|
PAGECHAR_INFO* charinfo = &m_TempCharList.back();
|
m_TempTextBuf.Delete(m_TempTextBuf.GetLength() - 1, 1);
|
charinfo->m_Unicode = 0x2;
|
charinfo->m_Flag = FPDFTEXT_CHAR_HYPHEN;
|
m_TempTextBuf.AppendChar(0xfffe);
|
break;
|
}
|
} else {
|
m_CurlineRect =
|
CFX_FloatRect(Obj.m_pTextObj->m_Left, Obj.m_pTextObj->m_Bottom,
|
Obj.m_pTextObj->m_Right, Obj.m_pTextObj->m_Top);
|
}
|
if (ePreMKC == FPDFText_MarkedContent::Delay) {
|
ProcessMarkedContent(Obj);
|
m_pPreTextObj = pTextObj;
|
m_perMatrix.Copy(formMatrix);
|
return;
|
}
|
m_pPreTextObj = pTextObj;
|
m_perMatrix.Copy(formMatrix);
|
int nItems = pTextObj->CountItems();
|
FX_FLOAT baseSpace = CalculateBaseSpace(pTextObj, matrix);
|
|
const FX_BOOL bR2L = IsRightToLeft(pTextObj, pFont, nItems);
|
const FX_BOOL bIsBidiAndMirrorInverse =
|
bR2L && (matrix.a * matrix.d - matrix.b * matrix.c) < 0;
|
int32_t iBufStartAppend = m_TempTextBuf.GetLength();
|
int32_t iCharListStartAppend =
|
pdfium::CollectionSize<int32_t>(m_TempCharList);
|
|
FX_FLOAT spacing = 0;
|
for (int i = 0; i < nItems; i++) {
|
CPDF_TextObjectItem item;
|
PAGECHAR_INFO charinfo;
|
charinfo.m_OriginX = 0;
|
charinfo.m_OriginY = 0;
|
pTextObj->GetItemInfo(i, &item);
|
if (item.m_CharCode == (uint32_t)-1) {
|
CFX_WideString str = m_TempTextBuf.MakeString();
|
if (str.IsEmpty()) {
|
str = m_TextBuf.AsStringC();
|
}
|
if (str.IsEmpty() || str.GetAt(str.GetLength() - 1) == TEXT_SPACE_CHAR)
|
continue;
|
|
FX_FLOAT fontsize_h = pTextObj->m_TextState.GetFontSizeH();
|
spacing = -fontsize_h * item.m_OriginX / 1000;
|
continue;
|
}
|
FX_FLOAT charSpace = pTextObj->m_TextState.GetObject()->m_CharSpace;
|
if (charSpace > 0.001) {
|
spacing += matrix.TransformDistance(charSpace);
|
} else if (charSpace < -0.001) {
|
spacing -= matrix.TransformDistance(FXSYS_fabs(charSpace));
|
}
|
spacing -= baseSpace;
|
if (spacing && i > 0) {
|
int last_width = 0;
|
FX_FLOAT fontsize_h = pTextObj->m_TextState.GetFontSizeH();
|
uint32_t space_charcode = pFont->CharCodeFromUnicode(' ');
|
FX_FLOAT threshold = 0;
|
if (space_charcode != CPDF_Font::kInvalidCharCode) {
|
threshold = fontsize_h * pFont->GetCharWidthF(space_charcode) / 1000;
|
}
|
if (threshold > fontsize_h / 3) {
|
threshold = 0;
|
} else {
|
threshold /= 2;
|
}
|
if (threshold == 0) {
|
threshold = fontsize_h;
|
int this_width = FXSYS_abs(GetCharWidth(item.m_CharCode, pFont));
|
threshold = this_width > last_width ? (FX_FLOAT)this_width
|
: (FX_FLOAT)last_width;
|
threshold = NormalizeThreshold(threshold);
|
threshold = fontsize_h * threshold / 1000;
|
}
|
if (threshold && (spacing && spacing >= threshold)) {
|
charinfo.m_Unicode = TEXT_SPACE_CHAR;
|
charinfo.m_Flag = FPDFTEXT_CHAR_GENERATED;
|
charinfo.m_pTextObj = pTextObj;
|
charinfo.m_Index = m_TextBuf.GetLength();
|
m_TempTextBuf.AppendChar(TEXT_SPACE_CHAR);
|
charinfo.m_CharCode = CPDF_Font::kInvalidCharCode;
|
charinfo.m_Matrix.Copy(formMatrix);
|
matrix.Transform(item.m_OriginX, item.m_OriginY, charinfo.m_OriginX,
|
charinfo.m_OriginY);
|
charinfo.m_CharBox =
|
CFX_FloatRect(charinfo.m_OriginX, charinfo.m_OriginY,
|
charinfo.m_OriginX, charinfo.m_OriginY);
|
m_TempCharList.push_back(charinfo);
|
}
|
if (item.m_CharCode == CPDF_Font::kInvalidCharCode) {
|
continue;
|
}
|
}
|
spacing = 0;
|
CFX_WideString wstrItem = pFont->UnicodeFromCharCode(item.m_CharCode);
|
FX_BOOL bNoUnicode = FALSE;
|
FX_WCHAR wChar = wstrItem.GetAt(0);
|
if ((wstrItem.IsEmpty() || wChar == 0) && item.m_CharCode) {
|
if (wstrItem.IsEmpty()) {
|
wstrItem += (FX_WCHAR)item.m_CharCode;
|
} else {
|
wstrItem.SetAt(0, (FX_WCHAR)item.m_CharCode);
|
}
|
bNoUnicode = TRUE;
|
}
|
charinfo.m_Index = -1;
|
charinfo.m_CharCode = item.m_CharCode;
|
if (bNoUnicode) {
|
charinfo.m_Flag = FPDFTEXT_CHAR_UNUNICODE;
|
} else {
|
charinfo.m_Flag = FPDFTEXT_CHAR_NORMAL;
|
}
|
charinfo.m_pTextObj = pTextObj;
|
charinfo.m_OriginX = 0, charinfo.m_OriginY = 0;
|
matrix.Transform(item.m_OriginX, item.m_OriginY, charinfo.m_OriginX,
|
charinfo.m_OriginY);
|
FX_RECT rect =
|
charinfo.m_pTextObj->GetFont()->GetCharBBox(charinfo.m_CharCode);
|
charinfo.m_CharBox.top =
|
rect.top * pTextObj->GetFontSize() / 1000 + item.m_OriginY;
|
charinfo.m_CharBox.left =
|
rect.left * pTextObj->GetFontSize() / 1000 + item.m_OriginX;
|
charinfo.m_CharBox.right =
|
rect.right * pTextObj->GetFontSize() / 1000 + item.m_OriginX;
|
charinfo.m_CharBox.bottom =
|
rect.bottom * pTextObj->GetFontSize() / 1000 + item.m_OriginY;
|
if (fabsf(charinfo.m_CharBox.top - charinfo.m_CharBox.bottom) < 0.01f) {
|
charinfo.m_CharBox.top =
|
charinfo.m_CharBox.bottom + pTextObj->GetFontSize();
|
}
|
if (fabsf(charinfo.m_CharBox.right - charinfo.m_CharBox.left) < 0.01f) {
|
charinfo.m_CharBox.right =
|
charinfo.m_CharBox.left + pTextObj->GetCharWidth(charinfo.m_CharCode);
|
}
|
matrix.TransformRect(charinfo.m_CharBox);
|
charinfo.m_Matrix.Copy(matrix);
|
if (wstrItem.IsEmpty()) {
|
charinfo.m_Unicode = 0;
|
m_TempCharList.push_back(charinfo);
|
m_TempTextBuf.AppendChar(0xfffe);
|
continue;
|
} else {
|
int nTotal = wstrItem.GetLength();
|
FX_BOOL bDel = FALSE;
|
const int count =
|
std::min(pdfium::CollectionSize<int>(m_TempCharList), 7);
|
FX_FLOAT threshold = charinfo.m_Matrix.TransformXDistance(
|
(FX_FLOAT)TEXT_CHARRATIO_GAPDELTA * pTextObj->GetFontSize());
|
for (int n = pdfium::CollectionSize<int>(m_TempCharList);
|
n > pdfium::CollectionSize<int>(m_TempCharList) - count; n--) {
|
const PAGECHAR_INFO& charinfo1 = m_TempCharList[n - 1];
|
if (charinfo1.m_CharCode == charinfo.m_CharCode &&
|
charinfo1.m_pTextObj->GetFont() == charinfo.m_pTextObj->GetFont() &&
|
FXSYS_fabs(charinfo1.m_OriginX - charinfo.m_OriginX) < threshold &&
|
FXSYS_fabs(charinfo1.m_OriginY - charinfo.m_OriginY) < threshold) {
|
bDel = TRUE;
|
break;
|
}
|
}
|
if (!bDel) {
|
for (int nIndex = 0; nIndex < nTotal; nIndex++) {
|
charinfo.m_Unicode = wstrItem.GetAt(nIndex);
|
if (charinfo.m_Unicode) {
|
charinfo.m_Index = m_TextBuf.GetLength();
|
m_TempTextBuf.AppendChar(charinfo.m_Unicode);
|
} else {
|
m_TempTextBuf.AppendChar(0xfffe);
|
}
|
m_TempCharList.push_back(charinfo);
|
}
|
} else if (i == 0) {
|
CFX_WideString str = m_TempTextBuf.MakeString();
|
if (!str.IsEmpty() &&
|
str.GetAt(str.GetLength() - 1) == TEXT_SPACE_CHAR) {
|
m_TempTextBuf.Delete(m_TempTextBuf.GetLength() - 1, 1);
|
m_TempCharList.pop_back();
|
}
|
}
|
}
|
}
|
if (bIsBidiAndMirrorInverse) {
|
SwapTempTextBuf(iCharListStartAppend, iBufStartAppend);
|
}
|
}
|
|
CPDF_TextPage::TextOrientation CPDF_TextPage::GetTextObjectWritingMode(
|
const CPDF_TextObject* pTextObj) const {
|
int32_t nChars = pTextObj->CountChars();
|
if (nChars == 1)
|
return m_TextlineDir;
|
|
CPDF_TextObjectItem first, last;
|
pTextObj->GetCharInfo(0, &first);
|
pTextObj->GetCharInfo(nChars - 1, &last);
|
CFX_Matrix textMatrix;
|
pTextObj->GetTextMatrix(&textMatrix);
|
textMatrix.TransformPoint(first.m_OriginX, first.m_OriginY);
|
textMatrix.TransformPoint(last.m_OriginX, last.m_OriginY);
|
FX_FLOAT dX = FXSYS_fabs(last.m_OriginX - first.m_OriginX);
|
FX_FLOAT dY = FXSYS_fabs(last.m_OriginY - first.m_OriginY);
|
if (dX <= 0.0001f && dY <= 0.0001f)
|
return TextOrientation::Unknown;
|
|
CFX_VectorF v(dX, dY);
|
v.Normalize();
|
if (v.y <= 0.0872f)
|
return v.x <= 0.0872f ? m_TextlineDir : TextOrientation::Horizontal;
|
|
if (v.x <= 0.0872f)
|
return TextOrientation::Vertical;
|
|
return m_TextlineDir;
|
}
|
|
FX_BOOL CPDF_TextPage::IsHyphen(FX_WCHAR curChar) {
|
CFX_WideString strCurText = m_TempTextBuf.MakeString();
|
if (strCurText.GetLength() == 0) {
|
strCurText = m_TextBuf.AsStringC();
|
}
|
FX_STRSIZE nCount = strCurText.GetLength();
|
int nIndex = nCount - 1;
|
FX_WCHAR wcTmp = strCurText.GetAt(nIndex);
|
while (wcTmp == 0x20 && nIndex <= nCount - 1 && nIndex >= 0) {
|
wcTmp = strCurText.GetAt(--nIndex);
|
}
|
if (0x2D == wcTmp || 0xAD == wcTmp) {
|
if (--nIndex > 0) {
|
FX_WCHAR preChar = strCurText.GetAt((nIndex));
|
if (((preChar >= L'A' && preChar <= L'Z') ||
|
(preChar >= L'a' && preChar <= L'z')) &&
|
((curChar >= L'A' && curChar <= L'Z') ||
|
(curChar >= L'a' && curChar <= L'z'))) {
|
return TRUE;
|
}
|
}
|
const PAGECHAR_INFO* preInfo;
|
if (!m_TempCharList.empty()) {
|
preInfo = &m_TempCharList.back();
|
} else if (!m_CharList.empty()) {
|
preInfo = &m_CharList.back();
|
} else {
|
return FALSE;
|
}
|
if (FPDFTEXT_CHAR_PIECE == preInfo->m_Flag &&
|
(0xAD == preInfo->m_Unicode || 0x2D == preInfo->m_Unicode)) {
|
return TRUE;
|
}
|
}
|
return FALSE;
|
}
|
|
CPDF_TextPage::GenerateCharacter CPDF_TextPage::ProcessInsertObject(
|
const CPDF_TextObject* pObj,
|
const CFX_Matrix& formMatrix) {
|
FindPreviousTextObject();
|
TextOrientation WritingMode = GetTextObjectWritingMode(pObj);
|
if (WritingMode == TextOrientation::Unknown)
|
WritingMode = GetTextObjectWritingMode(m_pPreTextObj);
|
|
CFX_FloatRect this_rect(pObj->m_Left, pObj->m_Bottom, pObj->m_Right,
|
pObj->m_Top);
|
CFX_FloatRect prev_rect(m_pPreTextObj->m_Left, m_pPreTextObj->m_Bottom,
|
m_pPreTextObj->m_Right, m_pPreTextObj->m_Top);
|
CPDF_TextObjectItem PrevItem, item;
|
int nItem = m_pPreTextObj->CountItems();
|
m_pPreTextObj->GetItemInfo(nItem - 1, &PrevItem);
|
pObj->GetItemInfo(0, &item);
|
CFX_WideString wstrItem =
|
pObj->GetFont()->UnicodeFromCharCode(item.m_CharCode);
|
if (wstrItem.IsEmpty()) {
|
wstrItem += (FX_WCHAR)item.m_CharCode;
|
}
|
FX_WCHAR curChar = wstrItem.GetAt(0);
|
if (WritingMode == TextOrientation::Horizontal) {
|
if (this_rect.Height() > 4.5 && prev_rect.Height() > 4.5) {
|
FX_FLOAT top =
|
this_rect.top < prev_rect.top ? this_rect.top : prev_rect.top;
|
FX_FLOAT bottom = this_rect.bottom > prev_rect.bottom ? this_rect.bottom
|
: prev_rect.bottom;
|
if (bottom >= top) {
|
return IsHyphen(curChar) ? GenerateCharacter::Hyphen
|
: GenerateCharacter::LineBreak;
|
}
|
}
|
} else if (WritingMode == TextOrientation::Vertical) {
|
if (this_rect.Width() > pObj->GetFontSize() * 0.1f &&
|
prev_rect.Width() > m_pPreTextObj->GetFontSize() * 0.1f) {
|
FX_FLOAT left = this_rect.left > m_CurlineRect.left ? this_rect.left
|
: m_CurlineRect.left;
|
FX_FLOAT right = this_rect.right < m_CurlineRect.right
|
? this_rect.right
|
: m_CurlineRect.right;
|
if (right <= left) {
|
return IsHyphen(curChar) ? GenerateCharacter::Hyphen
|
: GenerateCharacter::LineBreak;
|
}
|
}
|
}
|
FX_FLOAT last_pos = PrevItem.m_OriginX;
|
int nLastWidth = GetCharWidth(PrevItem.m_CharCode, m_pPreTextObj->GetFont());
|
FX_FLOAT last_width = nLastWidth * m_pPreTextObj->GetFontSize() / 1000;
|
last_width = FXSYS_fabs(last_width);
|
int nThisWidth = GetCharWidth(item.m_CharCode, pObj->GetFont());
|
FX_FLOAT this_width = nThisWidth * pObj->GetFontSize() / 1000;
|
this_width = FXSYS_fabs(this_width);
|
FX_FLOAT threshold =
|
last_width > this_width ? last_width / 4 : this_width / 4;
|
CFX_Matrix prev_matrix, prev_reverse;
|
m_pPreTextObj->GetTextMatrix(&prev_matrix);
|
prev_matrix.Concat(m_perMatrix);
|
prev_reverse.SetReverse(prev_matrix);
|
FX_FLOAT x = pObj->GetPosX();
|
FX_FLOAT y = pObj->GetPosY();
|
formMatrix.Transform(x, y);
|
prev_reverse.Transform(x, y);
|
if (last_width < this_width) {
|
threshold = prev_reverse.TransformDistance(threshold);
|
}
|
bool bNewline = false;
|
if (WritingMode == TextOrientation::Horizontal) {
|
CFX_FloatRect rect1(m_pPreTextObj->m_Left, pObj->m_Bottom,
|
m_pPreTextObj->m_Right, pObj->m_Top);
|
CFX_FloatRect rect2(m_pPreTextObj->m_Left, m_pPreTextObj->m_Bottom,
|
m_pPreTextObj->m_Right, m_pPreTextObj->m_Top);
|
CFX_FloatRect rect3 = rect1;
|
rect1.Intersect(rect2);
|
if ((rect1.IsEmpty() && rect2.Height() > 5 && rect3.Height() > 5) ||
|
((y > threshold * 2 || y < threshold * -3) &&
|
(FXSYS_fabs(y) < 1 ? FXSYS_fabs(x) < FXSYS_fabs(y) : TRUE))) {
|
bNewline = true;
|
if (nItem > 1) {
|
CPDF_TextObjectItem tempItem;
|
m_pPreTextObj->GetItemInfo(0, &tempItem);
|
CFX_Matrix m;
|
m_pPreTextObj->GetTextMatrix(&m);
|
if (PrevItem.m_OriginX > tempItem.m_OriginX &&
|
m_DisplayMatrix.a > 0.9 && m_DisplayMatrix.b < 0.1 &&
|
m_DisplayMatrix.c < 0.1 && m_DisplayMatrix.d < -0.9 && m.b < 0.1 &&
|
m.c < 0.1) {
|
CFX_FloatRect re(0, m_pPreTextObj->m_Bottom, 1000,
|
m_pPreTextObj->m_Top);
|
if (re.Contains(pObj->GetPosX(), pObj->GetPosY())) {
|
bNewline = false;
|
} else {
|
CFX_FloatRect rect(0, pObj->m_Bottom, 1000, pObj->m_Top);
|
if (rect.Contains(m_pPreTextObj->GetPosX(),
|
m_pPreTextObj->GetPosY())) {
|
bNewline = false;
|
}
|
}
|
}
|
}
|
}
|
}
|
if (bNewline) {
|
return IsHyphen(curChar) ? GenerateCharacter::Hyphen
|
: GenerateCharacter::LineBreak;
|
}
|
|
int32_t nChars = pObj->CountChars();
|
if (nChars == 1 && (0x2D == curChar || 0xAD == curChar) &&
|
IsHyphen(curChar)) {
|
return GenerateCharacter::Hyphen;
|
}
|
CFX_WideString PrevStr =
|
m_pPreTextObj->GetFont()->UnicodeFromCharCode(PrevItem.m_CharCode);
|
FX_WCHAR preChar = PrevStr.GetAt(PrevStr.GetLength() - 1);
|
CFX_Matrix matrix;
|
pObj->GetTextMatrix(&matrix);
|
matrix.Concat(formMatrix);
|
threshold = (FX_FLOAT)(nLastWidth > nThisWidth ? nLastWidth : nThisWidth);
|
threshold = threshold > 400
|
? (threshold < 700
|
? threshold / 4
|
: (threshold > 800 ? threshold / 6 : threshold / 5))
|
: (threshold / 2);
|
if (nLastWidth >= nThisWidth) {
|
threshold *= FXSYS_fabs(m_pPreTextObj->GetFontSize());
|
} else {
|
threshold *= FXSYS_fabs(pObj->GetFontSize());
|
threshold = matrix.TransformDistance(threshold);
|
threshold = prev_reverse.TransformDistance(threshold);
|
}
|
threshold /= 1000;
|
if ((threshold < 1.4881 && threshold > 1.4879) ||
|
(threshold < 1.39001 && threshold > 1.38999)) {
|
threshold *= 1.5;
|
}
|
if (FXSYS_fabs(last_pos + last_width - x) > threshold && curChar != L' ' &&
|
preChar != L' ') {
|
if (curChar != L' ' && preChar != L' ') {
|
if ((x - last_pos - last_width) > threshold ||
|
(last_pos - x - last_width) > threshold) {
|
return GenerateCharacter::Space;
|
}
|
if (x < 0 && (last_pos - x - last_width) > threshold) {
|
return GenerateCharacter::Space;
|
}
|
if ((x - last_pos - last_width) > this_width ||
|
(x - last_pos - this_width) > last_width) {
|
return GenerateCharacter::Space;
|
}
|
}
|
}
|
return GenerateCharacter::None;
|
}
|
|
FX_BOOL CPDF_TextPage::IsSameTextObject(CPDF_TextObject* pTextObj1,
|
CPDF_TextObject* pTextObj2) {
|
if (!pTextObj1 || !pTextObj2) {
|
return FALSE;
|
}
|
CFX_FloatRect rcPreObj(pTextObj2->m_Left, pTextObj2->m_Bottom,
|
pTextObj2->m_Right, pTextObj2->m_Top);
|
CFX_FloatRect rcCurObj(pTextObj1->m_Left, pTextObj1->m_Bottom,
|
pTextObj1->m_Right, pTextObj1->m_Top);
|
if (rcPreObj.IsEmpty() && rcCurObj.IsEmpty()) {
|
FX_FLOAT dbXdif = FXSYS_fabs(rcPreObj.left - rcCurObj.left);
|
size_t nCount = m_CharList.size();
|
if (nCount >= 2) {
|
PAGECHAR_INFO perCharTemp = m_CharList[nCount - 2];
|
FX_FLOAT dbSpace = perCharTemp.m_CharBox.Width();
|
if (dbXdif > dbSpace) {
|
return FALSE;
|
}
|
}
|
}
|
if (!rcPreObj.IsEmpty() || !rcCurObj.IsEmpty()) {
|
rcPreObj.Intersect(rcCurObj);
|
if (rcPreObj.IsEmpty()) {
|
return FALSE;
|
}
|
if (FXSYS_fabs(rcPreObj.Width() - rcCurObj.Width()) >
|
rcCurObj.Width() / 2) {
|
return FALSE;
|
}
|
if (pTextObj2->GetFontSize() != pTextObj1->GetFontSize()) {
|
return FALSE;
|
}
|
}
|
int nPreCount = pTextObj2->CountItems();
|
int nCurCount = pTextObj1->CountItems();
|
if (nPreCount != nCurCount) {
|
return FALSE;
|
}
|
// If both objects have no items, consider them same.
|
if (!nPreCount)
|
return TRUE;
|
|
CPDF_TextObjectItem itemPer = {0, 0.0f, 0.0f};
|
CPDF_TextObjectItem itemCur = {0, 0.0f, 0.0f};
|
for (int i = 0; i < nPreCount; i++) {
|
pTextObj2->GetItemInfo(i, &itemPer);
|
pTextObj1->GetItemInfo(i, &itemCur);
|
if (itemCur.m_CharCode != itemPer.m_CharCode) {
|
return FALSE;
|
}
|
}
|
if (FXSYS_fabs(pTextObj1->GetPosX() - pTextObj2->GetPosX()) >
|
GetCharWidth(itemPer.m_CharCode, pTextObj2->GetFont()) *
|
pTextObj2->GetFontSize() / 1000 * 0.9 ||
|
FXSYS_fabs(pTextObj1->GetPosY() - pTextObj2->GetPosY()) >
|
std::max(std::max(rcPreObj.Height(), rcPreObj.Width()),
|
pTextObj2->GetFontSize()) /
|
8) {
|
return FALSE;
|
}
|
return TRUE;
|
}
|
|
FX_BOOL CPDF_TextPage::IsSameAsPreTextObject(
|
CPDF_TextObject* pTextObj,
|
const CPDF_PageObjectList* pObjList,
|
CPDF_PageObjectList::const_iterator iter) {
|
int i = 0;
|
while (i < 5 && iter != pObjList->begin()) {
|
--iter;
|
CPDF_PageObject* pOtherObj = iter->get();
|
if (pOtherObj == pTextObj || !pOtherObj->IsText())
|
continue;
|
if (IsSameTextObject(pOtherObj->AsText(), pTextObj))
|
return TRUE;
|
++i;
|
}
|
return FALSE;
|
}
|
|
FX_BOOL CPDF_TextPage::GenerateCharInfo(FX_WCHAR unicode, PAGECHAR_INFO& info) {
|
const PAGECHAR_INFO* preChar;
|
if (!m_TempCharList.empty()) {
|
preChar = &m_TempCharList.back();
|
} else if (!m_CharList.empty()) {
|
preChar = &m_CharList.back();
|
} else {
|
return FALSE;
|
}
|
info.m_Index = m_TextBuf.GetLength();
|
info.m_Unicode = unicode;
|
info.m_pTextObj = nullptr;
|
info.m_CharCode = CPDF_Font::kInvalidCharCode;
|
info.m_Flag = FPDFTEXT_CHAR_GENERATED;
|
int preWidth = 0;
|
if (preChar->m_pTextObj && preChar->m_CharCode != -1) {
|
preWidth =
|
GetCharWidth(preChar->m_CharCode, preChar->m_pTextObj->GetFont());
|
}
|
|
FX_FLOAT fFontSize = preChar->m_pTextObj ? preChar->m_pTextObj->GetFontSize()
|
: preChar->m_CharBox.Height();
|
if (!fFontSize)
|
fFontSize = kDefaultFontSize;
|
|
info.m_OriginX = preChar->m_OriginX + preWidth * (fFontSize) / 1000;
|
info.m_OriginY = preChar->m_OriginY;
|
info.m_CharBox = CFX_FloatRect(info.m_OriginX, info.m_OriginY, info.m_OriginX,
|
info.m_OriginY);
|
return TRUE;
|
}
|
|
FX_BOOL CPDF_TextPage::IsRectIntersect(const CFX_FloatRect& rect1,
|
const CFX_FloatRect& rect2) {
|
CFX_FloatRect rect = rect1;
|
rect.Intersect(rect2);
|
return !rect.IsEmpty();
|
}
|
|
CPDF_TextPageFind::CPDF_TextPageFind(const CPDF_TextPage* pTextPage)
|
: m_pTextPage(pTextPage),
|
m_flags(0),
|
m_findNextStart(-1),
|
m_findPreStart(-1),
|
m_bMatchCase(FALSE),
|
m_bMatchWholeWord(FALSE),
|
m_resStart(0),
|
m_resEnd(-1),
|
m_IsFind(FALSE) {
|
m_strText = m_pTextPage->GetPageText();
|
int nCount = pTextPage->CountChars();
|
if (nCount) {
|
m_CharIndex.push_back(0);
|
}
|
for (int i = 0; i < nCount; i++) {
|
FPDF_CHAR_INFO info;
|
pTextPage->GetCharInfo(i, &info);
|
int indexSize = pdfium::CollectionSize<int>(m_CharIndex);
|
if (info.m_Flag == FPDFTEXT_CHAR_NORMAL ||
|
info.m_Flag == FPDFTEXT_CHAR_GENERATED) {
|
if (indexSize % 2) {
|
m_CharIndex.push_back(1);
|
} else {
|
if (indexSize <= 0) {
|
continue;
|
}
|
m_CharIndex[indexSize - 1] += 1;
|
}
|
} else {
|
if (indexSize % 2) {
|
if (indexSize <= 0) {
|
continue;
|
}
|
m_CharIndex[indexSize - 1] = i + 1;
|
} else {
|
m_CharIndex.push_back(i + 1);
|
}
|
}
|
}
|
int indexSize = pdfium::CollectionSize<int>(m_CharIndex);
|
if (indexSize % 2) {
|
m_CharIndex.erase(m_CharIndex.begin() + indexSize - 1);
|
}
|
}
|
|
CPDF_TextPageFind::~CPDF_TextPageFind() {}
|
|
int CPDF_TextPageFind::GetCharIndex(int index) const {
|
return m_pTextPage->CharIndexFromTextIndex(index);
|
}
|
|
FX_BOOL CPDF_TextPageFind::FindFirst(const CFX_WideString& findwhat,
|
int flags,
|
int startPos) {
|
if (!m_pTextPage) {
|
return FALSE;
|
}
|
if (m_strText.IsEmpty() || m_bMatchCase != (flags & FPDFTEXT_MATCHCASE)) {
|
m_strText = m_pTextPage->GetPageText();
|
}
|
CFX_WideString findwhatStr = findwhat;
|
m_findWhat = findwhatStr;
|
m_flags = flags;
|
m_bMatchCase = flags & FPDFTEXT_MATCHCASE;
|
if (m_strText.IsEmpty()) {
|
m_IsFind = FALSE;
|
return TRUE;
|
}
|
FX_STRSIZE len = findwhatStr.GetLength();
|
if (!m_bMatchCase) {
|
findwhatStr.MakeLower();
|
m_strText.MakeLower();
|
}
|
m_bMatchWholeWord = flags & FPDFTEXT_MATCHWHOLEWORD;
|
m_findNextStart = startPos;
|
if (startPos == -1) {
|
m_findPreStart = m_strText.GetLength() - 1;
|
} else {
|
m_findPreStart = startPos;
|
}
|
m_csFindWhatArray.clear();
|
int i = 0;
|
while (i < len) {
|
if (findwhatStr.GetAt(i) != ' ') {
|
break;
|
}
|
i++;
|
}
|
if (i < len) {
|
ExtractFindWhat(findwhatStr);
|
} else {
|
m_csFindWhatArray.push_back(findwhatStr);
|
}
|
if (m_csFindWhatArray.empty()) {
|
return FALSE;
|
}
|
m_IsFind = TRUE;
|
m_resStart = 0;
|
m_resEnd = -1;
|
return TRUE;
|
}
|
|
FX_BOOL CPDF_TextPageFind::FindNext() {
|
if (!m_pTextPage) {
|
return FALSE;
|
}
|
m_resArray.clear();
|
if (m_findNextStart == -1) {
|
return FALSE;
|
}
|
if (m_strText.IsEmpty()) {
|
m_IsFind = FALSE;
|
return m_IsFind;
|
}
|
int strLen = m_strText.GetLength();
|
if (m_findNextStart > strLen - 1) {
|
m_IsFind = FALSE;
|
return m_IsFind;
|
}
|
int nCount = pdfium::CollectionSize<int>(m_csFindWhatArray);
|
int nResultPos = 0;
|
int nStartPos = 0;
|
nStartPos = m_findNextStart;
|
FX_BOOL bSpaceStart = FALSE;
|
for (int iWord = 0; iWord < nCount; iWord++) {
|
CFX_WideString csWord = m_csFindWhatArray[iWord];
|
if (csWord.IsEmpty()) {
|
if (iWord == nCount - 1) {
|
FX_WCHAR strInsert = m_strText.GetAt(nStartPos);
|
if (strInsert == TEXT_LINEFEED_CHAR || strInsert == TEXT_SPACE_CHAR ||
|
strInsert == TEXT_RETURN_CHAR || strInsert == 160) {
|
nResultPos = nStartPos + 1;
|
break;
|
}
|
iWord = -1;
|
} else if (iWord == 0) {
|
bSpaceStart = TRUE;
|
}
|
continue;
|
}
|
int endIndex;
|
nResultPos = m_strText.Find(csWord.c_str(), nStartPos);
|
if (nResultPos == -1) {
|
m_IsFind = FALSE;
|
return m_IsFind;
|
}
|
endIndex = nResultPos + csWord.GetLength() - 1;
|
if (iWord == 0) {
|
m_resStart = nResultPos;
|
}
|
FX_BOOL bMatch = TRUE;
|
if (iWord != 0 && !bSpaceStart) {
|
int PreResEndPos = nStartPos;
|
int curChar = csWord.GetAt(0);
|
CFX_WideString lastWord = m_csFindWhatArray[iWord - 1];
|
int lastChar = lastWord.GetAt(lastWord.GetLength() - 1);
|
if (nStartPos == nResultPos &&
|
!(IsIgnoreSpaceCharacter(lastChar) ||
|
IsIgnoreSpaceCharacter(curChar))) {
|
bMatch = FALSE;
|
}
|
for (int d = PreResEndPos; d < nResultPos; d++) {
|
FX_WCHAR strInsert = m_strText.GetAt(d);
|
if (strInsert != TEXT_LINEFEED_CHAR && strInsert != TEXT_SPACE_CHAR &&
|
strInsert != TEXT_RETURN_CHAR && strInsert != 160) {
|
bMatch = FALSE;
|
break;
|
}
|
}
|
} else if (bSpaceStart) {
|
if (nResultPos > 0) {
|
FX_WCHAR strInsert = m_strText.GetAt(nResultPos - 1);
|
if (strInsert != TEXT_LINEFEED_CHAR && strInsert != TEXT_SPACE_CHAR &&
|
strInsert != TEXT_RETURN_CHAR && strInsert != 160) {
|
bMatch = FALSE;
|
m_resStart = nResultPos;
|
} else {
|
m_resStart = nResultPos - 1;
|
}
|
}
|
}
|
if (m_bMatchWholeWord && bMatch) {
|
bMatch = IsMatchWholeWord(m_strText, nResultPos, endIndex);
|
}
|
nStartPos = endIndex + 1;
|
if (!bMatch) {
|
iWord = -1;
|
if (bSpaceStart) {
|
nStartPos = m_resStart + m_csFindWhatArray[1].GetLength();
|
} else {
|
nStartPos = m_resStart + m_csFindWhatArray[0].GetLength();
|
}
|
}
|
}
|
m_resEnd = nResultPos + m_csFindWhatArray.back().GetLength() - 1;
|
m_IsFind = TRUE;
|
int resStart = GetCharIndex(m_resStart);
|
int resEnd = GetCharIndex(m_resEnd);
|
m_resArray = m_pTextPage->GetRectArray(resStart, resEnd - resStart + 1);
|
if (m_flags & FPDFTEXT_CONSECUTIVE) {
|
m_findNextStart = m_resStart + 1;
|
m_findPreStart = m_resEnd - 1;
|
} else {
|
m_findNextStart = m_resEnd + 1;
|
m_findPreStart = m_resStart - 1;
|
}
|
return m_IsFind;
|
}
|
|
FX_BOOL CPDF_TextPageFind::FindPrev() {
|
if (!m_pTextPage) {
|
return FALSE;
|
}
|
m_resArray.clear();
|
if (m_strText.IsEmpty() || m_findPreStart < 0) {
|
m_IsFind = FALSE;
|
return m_IsFind;
|
}
|
CPDF_TextPageFind findEngine(m_pTextPage);
|
FX_BOOL ret = findEngine.FindFirst(m_findWhat, m_flags);
|
if (!ret) {
|
m_IsFind = FALSE;
|
return m_IsFind;
|
}
|
int order = -1, MatchedCount = 0;
|
while (ret) {
|
ret = findEngine.FindNext();
|
if (ret) {
|
int order1 = findEngine.GetCurOrder();
|
int MatchedCount1 = findEngine.GetMatchedCount();
|
if (((order1 + MatchedCount1) - 1) > m_findPreStart) {
|
break;
|
}
|
order = order1;
|
MatchedCount = MatchedCount1;
|
}
|
}
|
if (order == -1) {
|
m_IsFind = FALSE;
|
return m_IsFind;
|
}
|
m_resStart = m_pTextPage->TextIndexFromCharIndex(order);
|
m_resEnd = m_pTextPage->TextIndexFromCharIndex(order + MatchedCount - 1);
|
m_IsFind = TRUE;
|
m_resArray = m_pTextPage->GetRectArray(order, MatchedCount);
|
if (m_flags & FPDFTEXT_CONSECUTIVE) {
|
m_findNextStart = m_resStart + 1;
|
m_findPreStart = m_resEnd - 1;
|
} else {
|
m_findNextStart = m_resEnd + 1;
|
m_findPreStart = m_resStart - 1;
|
}
|
return m_IsFind;
|
}
|
|
void CPDF_TextPageFind::ExtractFindWhat(const CFX_WideString& findwhat) {
|
if (findwhat.IsEmpty()) {
|
return;
|
}
|
int index = 0;
|
while (1) {
|
CFX_WideString csWord = TEXT_EMPTY;
|
int ret =
|
ExtractSubString(csWord, findwhat.c_str(), index, TEXT_SPACE_CHAR);
|
if (csWord.IsEmpty()) {
|
if (ret) {
|
m_csFindWhatArray.push_back(L"");
|
index++;
|
continue;
|
} else {
|
break;
|
}
|
}
|
int pos = 0;
|
while (pos < csWord.GetLength()) {
|
CFX_WideString curStr = csWord.Mid(pos, 1);
|
FX_WCHAR curChar = csWord.GetAt(pos);
|
if (IsIgnoreSpaceCharacter(curChar)) {
|
if (pos > 0 && curChar == 0x2019) {
|
pos++;
|
continue;
|
}
|
if (pos > 0) {
|
m_csFindWhatArray.push_back(csWord.Mid(0, pos));
|
}
|
m_csFindWhatArray.push_back(curStr);
|
if (pos == csWord.GetLength() - 1) {
|
csWord.clear();
|
break;
|
}
|
csWord = csWord.Right(csWord.GetLength() - pos - 1);
|
pos = 0;
|
continue;
|
}
|
pos++;
|
}
|
if (!csWord.IsEmpty()) {
|
m_csFindWhatArray.push_back(csWord);
|
}
|
index++;
|
}
|
}
|
|
FX_BOOL CPDF_TextPageFind::IsMatchWholeWord(const CFX_WideString& csPageText,
|
int startPos,
|
int endPos) {
|
FX_WCHAR char_left = 0;
|
FX_WCHAR char_right = 0;
|
int char_count = endPos - startPos + 1;
|
if (char_count < 1) {
|
return FALSE;
|
}
|
if (char_count == 1 && csPageText.GetAt(startPos) > 255) {
|
return TRUE;
|
}
|
if (startPos - 1 >= 0) {
|
char_left = csPageText.GetAt(startPos - 1);
|
}
|
if (startPos + char_count < csPageText.GetLength()) {
|
char_right = csPageText.GetAt(startPos + char_count);
|
}
|
if ((char_left > 'A' && char_left < 'a') ||
|
(char_left > 'a' && char_left < 'z') ||
|
(char_left > 0xfb00 && char_left < 0xfb06) || std::iswdigit(char_left) ||
|
(char_right > 'A' && char_right < 'a') ||
|
(char_right > 'a' && char_right < 'z') ||
|
(char_right > 0xfb00 && char_right < 0xfb06) ||
|
std::iswdigit(char_right)) {
|
return FALSE;
|
}
|
if (!(('A' > char_left || char_left > 'Z') &&
|
('a' > char_left || char_left > 'z') &&
|
('A' > char_right || char_right > 'Z') &&
|
('a' > char_right || char_right > 'z'))) {
|
return FALSE;
|
}
|
if (char_count > 0) {
|
if (csPageText.GetAt(startPos) >= L'0' &&
|
csPageText.GetAt(startPos) <= L'9' && char_left >= L'0' &&
|
char_left <= L'9') {
|
return FALSE;
|
}
|
if (csPageText.GetAt(endPos) >= L'0' && csPageText.GetAt(endPos) <= L'9' &&
|
char_right >= L'0' && char_right <= L'9') {
|
return FALSE;
|
}
|
}
|
return TRUE;
|
}
|
|
FX_BOOL CPDF_TextPageFind::ExtractSubString(CFX_WideString& rString,
|
const FX_WCHAR* lpszFullString,
|
int iSubString,
|
FX_WCHAR chSep) {
|
if (!lpszFullString) {
|
return FALSE;
|
}
|
while (iSubString--) {
|
lpszFullString = wcschr(lpszFullString, chSep);
|
if (!lpszFullString) {
|
rString.clear();
|
return FALSE;
|
}
|
lpszFullString++;
|
while (*lpszFullString == chSep) {
|
lpszFullString++;
|
}
|
}
|
const FX_WCHAR* lpchEnd = wcschr(lpszFullString, chSep);
|
int nLen = lpchEnd ? (int)(lpchEnd - lpszFullString)
|
: (int)FXSYS_wcslen(lpszFullString);
|
ASSERT(nLen >= 0);
|
FXSYS_memcpy(rString.GetBuffer(nLen), lpszFullString,
|
nLen * sizeof(FX_WCHAR));
|
rString.ReleaseBuffer();
|
return TRUE;
|
}
|
|
CFX_WideString CPDF_TextPageFind::MakeReverse(const CFX_WideString& str) {
|
CFX_WideString str2;
|
str2.clear();
|
int nlen = str.GetLength();
|
for (int i = nlen - 1; i >= 0; i--) {
|
str2 += str.GetAt(i);
|
}
|
return str2;
|
}
|
|
int CPDF_TextPageFind::GetCurOrder() const {
|
return GetCharIndex(m_resStart);
|
}
|
|
int CPDF_TextPageFind::GetMatchedCount() const {
|
int resStart = GetCharIndex(m_resStart);
|
int resEnd = GetCharIndex(m_resEnd);
|
return resEnd - resStart + 1;
|
}
|
|
CPDF_LinkExtract::CPDF_LinkExtract(const CPDF_TextPage* pTextPage)
|
: m_pTextPage(pTextPage) {}
|
|
CPDF_LinkExtract::~CPDF_LinkExtract() {
|
}
|
|
void CPDF_LinkExtract::ExtractLinks() {
|
m_LinkArray.clear();
|
if (!m_pTextPage->IsParsed())
|
return;
|
|
m_strPageText = m_pTextPage->GetPageText(0, -1);
|
if (m_strPageText.IsEmpty())
|
return;
|
|
ParseLink();
|
}
|
|
void CPDF_LinkExtract::ParseLink() {
|
int start = 0, pos = 0;
|
int TotalChar = m_pTextPage->CountChars();
|
while (pos < TotalChar) {
|
FPDF_CHAR_INFO pageChar;
|
m_pTextPage->GetCharInfo(pos, &pageChar);
|
if (pageChar.m_Flag == FPDFTEXT_CHAR_GENERATED ||
|
pageChar.m_Unicode == 0x20 || pos == TotalChar - 1) {
|
int nCount = pos - start;
|
if (pos == TotalChar - 1) {
|
nCount++;
|
}
|
CFX_WideString strBeCheck;
|
strBeCheck = m_pTextPage->GetPageText(start, nCount);
|
if (strBeCheck.GetLength() > 5) {
|
while (strBeCheck.GetLength() > 0) {
|
FX_WCHAR ch = strBeCheck.GetAt(strBeCheck.GetLength() - 1);
|
if (ch == L')' || ch == L',' || ch == L'>' || ch == L'.') {
|
strBeCheck = strBeCheck.Mid(0, strBeCheck.GetLength() - 1);
|
nCount--;
|
} else {
|
break;
|
}
|
}
|
if (nCount > 5 &&
|
(CheckWebLink(strBeCheck) || CheckMailLink(strBeCheck))) {
|
m_LinkArray.push_back({start, nCount, strBeCheck});
|
}
|
}
|
start = ++pos;
|
} else {
|
pos++;
|
}
|
}
|
}
|
|
bool CPDF_LinkExtract::CheckWebLink(CFX_WideString& strBeCheck) {
|
CFX_WideString str = strBeCheck;
|
str.MakeLower();
|
if (str.Find(L"http://www.") != -1) {
|
strBeCheck = strBeCheck.Right(str.GetLength() - str.Find(L"http://www."));
|
return true;
|
}
|
if (str.Find(L"http://") != -1) {
|
strBeCheck = strBeCheck.Right(str.GetLength() - str.Find(L"http://"));
|
return true;
|
}
|
if (str.Find(L"https://www.") != -1) {
|
strBeCheck = strBeCheck.Right(str.GetLength() - str.Find(L"https://www."));
|
return true;
|
}
|
if (str.Find(L"https://") != -1) {
|
strBeCheck = strBeCheck.Right(str.GetLength() - str.Find(L"https://"));
|
return true;
|
}
|
if (str.Find(L"www.") != -1) {
|
strBeCheck = strBeCheck.Right(str.GetLength() - str.Find(L"www."));
|
strBeCheck = L"http://" + strBeCheck;
|
return true;
|
}
|
return false;
|
}
|
|
bool CPDF_LinkExtract::CheckMailLink(CFX_WideString& str) {
|
int aPos = str.Find(L'@');
|
// Invalid when no '@'.
|
if (aPos < 1)
|
return false;
|
|
// Check the local part.
|
int pPos = aPos; // Used to track the position of '@' or '.'.
|
for (int i = aPos - 1; i >= 0; i--) {
|
FX_WCHAR ch = str.GetAt(i);
|
if (ch == L'_' || ch == L'-' || FXSYS_iswalnum(ch))
|
continue;
|
|
if (ch != L'.' || i == pPos - 1 || i == 0) {
|
if (i == aPos - 1) {
|
// There is '.' or invalid char before '@'.
|
return FALSE;
|
}
|
// End extracting for other invalid chars, '.' at the beginning, or
|
// consecutive '.'.
|
int removed_len = i == pPos - 1 ? i + 2 : i + 1;
|
str = str.Right(str.GetLength() - removed_len);
|
break;
|
}
|
// Found a valid '.'.
|
pPos = i;
|
}
|
|
// Check the domain name part.
|
aPos = str.Find(L'@');
|
if (aPos < 1)
|
return false;
|
|
str.TrimRight(L'.');
|
// At least one '.' in domain name, but not at the beginning.
|
// TODO(weili): RFC5322 allows domain names to be a local name without '.'.
|
// Check whether we should remove this check.
|
int ePos = str.Find(L'.', aPos + 1);
|
if (ePos == -1 || ePos == aPos + 1)
|
return false;
|
|
// Validate all other chars in domain name.
|
int nLen = str.GetLength();
|
pPos = 0; // Used to track the position of '.'.
|
for (int i = aPos + 1; i < nLen; i++) {
|
FX_WCHAR wch = str.GetAt(i);
|
if (wch == L'-' || FXSYS_iswalnum(wch))
|
continue;
|
|
if (wch != L'.' || i == pPos + 1) {
|
// Domain name should end before invalid char.
|
int host_end = i == pPos + 1 ? i - 2 : i - 1;
|
if (pPos > 0 && host_end - aPos >= 3) {
|
// Trim the ending invalid chars if there is at least one '.' and name.
|
str = str.Left(host_end + 1);
|
break;
|
}
|
return false;
|
}
|
pPos = i;
|
}
|
|
if (str.Find(L"mailto:") == -1)
|
str = L"mailto:" + str;
|
|
return true;
|
}
|
|
CFX_WideString CPDF_LinkExtract::GetURL(size_t index) const {
|
return index < m_LinkArray.size() ? m_LinkArray[index].m_strUrl : L"";
|
}
|
|
std::vector<CFX_FloatRect> CPDF_LinkExtract::GetRects(size_t index) const {
|
if (index >= m_LinkArray.size())
|
return std::vector<CFX_FloatRect>();
|
|
return m_pTextPage->GetRectArray(m_LinkArray[index].m_Start,
|
m_LinkArray[index].m_Count);
|
}
|
