// Copyright 2016 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 "core/fpdfdoc/ctypeset.h"
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#include <algorithm>
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#include "core/fpdfdoc/csection.h"
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#include "core/fpdfdoc/cpvt_wordinfo.h"
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namespace {
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const uint8_t special_chars[128] = {
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0x00, 0x0C, 0x08, 0x0C, 0x08, 0x00, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x08, 0x00,
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0x10, 0x00, 0x00, 0x28, 0x0C, 0x08, 0x00, 0x00, 0x28, 0x28, 0x28, 0x28,
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0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x08, 0x08,
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0x00, 0x00, 0x00, 0x08, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
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0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
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0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x0C, 0x00, 0x08, 0x00, 0x00,
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0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
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0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
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0x01, 0x01, 0x01, 0x0C, 0x00, 0x08, 0x00, 0x00,
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};
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bool IsLatin(uint16_t word) {
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if (word <= 0x007F)
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return !!(special_chars[word] & 0x01);
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return ((word >= 0x00C0 && word <= 0x00FF) ||
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(word >= 0x0100 && word <= 0x024F) ||
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(word >= 0x1E00 && word <= 0x1EFF) ||
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(word >= 0x2C60 && word <= 0x2C7F) ||
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(word >= 0xA720 && word <= 0xA7FF) ||
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(word >= 0xFF21 && word <= 0xFF3A) ||
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(word >= 0xFF41 && word <= 0xFF5A));
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}
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bool IsDigit(uint32_t word) {
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return word >= 0x0030 && word <= 0x0039;
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}
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bool IsCJK(uint32_t word) {
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if ((word >= 0x1100 && word <= 0x11FF) ||
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(word >= 0x2E80 && word <= 0x2FFF) ||
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(word >= 0x3040 && word <= 0x9FBF) ||
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(word >= 0xAC00 && word <= 0xD7AF) ||
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(word >= 0xF900 && word <= 0xFAFF) ||
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(word >= 0xFE30 && word <= 0xFE4F) ||
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(word >= 0x20000 && word <= 0x2A6DF) ||
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(word >= 0x2F800 && word <= 0x2FA1F)) {
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return true;
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}
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if (word >= 0x3000 && word <= 0x303F) {
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return (
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word == 0x3005 || word == 0x3006 || word == 0x3021 || word == 0x3022 ||
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word == 0x3023 || word == 0x3024 || word == 0x3025 || word == 0x3026 ||
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word == 0x3027 || word == 0x3028 || word == 0x3029 || word == 0x3031 ||
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word == 0x3032 || word == 0x3033 || word == 0x3034 || word == 0x3035);
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}
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return word >= 0xFF66 && word <= 0xFF9D;
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}
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bool IsPunctuation(uint32_t word) {
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if (word <= 0x007F)
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return !!(special_chars[word] & 0x08);
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if (word >= 0x0080 && word <= 0x00FF) {
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return (word == 0x0082 || word == 0x0084 || word == 0x0085 ||
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word == 0x0091 || word == 0x0092 || word == 0x0093 ||
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word <= 0x0094 || word == 0x0096 || word == 0x00B4 ||
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word == 0x00B8);
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}
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if (word >= 0x2000 && word <= 0x206F) {
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return (
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word == 0x2010 || word == 0x2011 || word == 0x2012 || word == 0x2013 ||
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word == 0x2018 || word == 0x2019 || word == 0x201A || word == 0x201B ||
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word == 0x201C || word == 0x201D || word == 0x201E || word == 0x201F ||
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word == 0x2032 || word == 0x2033 || word == 0x2034 || word == 0x2035 ||
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word == 0x2036 || word == 0x2037 || word == 0x203C || word == 0x203D ||
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word == 0x203E || word == 0x2044);
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}
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if (word >= 0x3000 && word <= 0x303F) {
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return (
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word == 0x3001 || word == 0x3002 || word == 0x3003 || word == 0x3005 ||
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word == 0x3009 || word == 0x300A || word == 0x300B || word == 0x300C ||
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word == 0x300D || word == 0x300F || word == 0x300E || word == 0x3010 ||
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word == 0x3011 || word == 0x3014 || word == 0x3015 || word == 0x3016 ||
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word == 0x3017 || word == 0x3018 || word == 0x3019 || word == 0x301A ||
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word == 0x301B || word == 0x301D || word == 0x301E || word == 0x301F);
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}
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if (word >= 0xFE50 && word <= 0xFE6F)
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return (word >= 0xFE50 && word <= 0xFE5E) || word == 0xFE63;
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if (word >= 0xFF00 && word <= 0xFFEF) {
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return (
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word == 0xFF01 || word == 0xFF02 || word == 0xFF07 || word == 0xFF08 ||
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word == 0xFF09 || word == 0xFF0C || word == 0xFF0E || word == 0xFF0F ||
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word == 0xFF1A || word == 0xFF1B || word == 0xFF1F || word == 0xFF3B ||
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word == 0xFF3D || word == 0xFF40 || word == 0xFF5B || word == 0xFF5C ||
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word == 0xFF5D || word == 0xFF61 || word == 0xFF62 || word == 0xFF63 ||
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word == 0xFF64 || word == 0xFF65 || word == 0xFF9E || word == 0xFF9F);
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}
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return false;
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}
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bool IsConnectiveSymbol(uint32_t word) {
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return word <= 0x007F && (special_chars[word] & 0x20);
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}
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bool IsOpenStylePunctuation(uint32_t word) {
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if (word <= 0x007F)
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return !!(special_chars[word] & 0x04);
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return (word == 0x300A || word == 0x300C || word == 0x300E ||
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word == 0x3010 || word == 0x3014 || word == 0x3016 ||
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word == 0x3018 || word == 0x301A || word == 0xFF08 ||
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word == 0xFF3B || word == 0xFF5B || word == 0xFF62);
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}
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bool IsCurrencySymbol(uint16_t word) {
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return (word == 0x0024 || word == 0x0080 || word == 0x00A2 ||
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word == 0x00A3 || word == 0x00A4 || word == 0x00A5 ||
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(word >= 0x20A0 && word <= 0x20CF) || word == 0xFE69 ||
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word == 0xFF04 || word == 0xFFE0 || word == 0xFFE1 ||
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word == 0xFFE5 || word == 0xFFE6);
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}
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bool IsPrefixSymbol(uint16_t word) {
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return IsCurrencySymbol(word) || word == 0x2116;
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}
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bool IsSpace(uint16_t word) {
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return word == 0x0020 || word == 0x3000;
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}
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bool NeedDivision(uint16_t prevWord, uint16_t curWord) {
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if ((IsLatin(prevWord) || IsDigit(prevWord)) &&
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(IsLatin(curWord) || IsDigit(curWord))) {
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return false;
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}
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if (IsSpace(curWord) || IsPunctuation(curWord)) {
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return false;
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}
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if (IsConnectiveSymbol(prevWord) || IsConnectiveSymbol(curWord)) {
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return false;
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}
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if (IsSpace(prevWord) || IsPunctuation(prevWord)) {
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return true;
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}
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if (IsPrefixSymbol(prevWord)) {
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return false;
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}
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if (IsPrefixSymbol(curWord) || IsCJK(curWord)) {
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return true;
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}
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if (IsCJK(prevWord)) {
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return true;
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}
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return false;
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}
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} // namespace
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CTypeset::CTypeset(CSection* pSection)
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: m_rcRet(0.0f, 0.0f, 0.0f, 0.0f),
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m_pVT(pSection->m_pVT),
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m_pSection(pSection) {}
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CTypeset::~CTypeset() {}
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CPVT_FloatRect CTypeset::CharArray() {
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ASSERT(m_pSection);
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FX_FLOAT fLineAscent =
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m_pVT->GetFontAscent(m_pVT->GetDefaultFontIndex(), m_pVT->GetFontSize());
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FX_FLOAT fLineDescent =
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m_pVT->GetFontDescent(m_pVT->GetDefaultFontIndex(), m_pVT->GetFontSize());
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m_rcRet.Default();
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FX_FLOAT x = 0.0f, y = 0.0f;
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FX_FLOAT fNextWidth;
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int32_t nStart = 0;
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FX_FLOAT fNodeWidth = m_pVT->GetPlateWidth() /
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(m_pVT->m_nCharArray <= 0 ? 1 : m_pVT->m_nCharArray);
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if (CLine* pLine = m_pSection->m_LineArray.GetAt(0)) {
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x = 0.0f;
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y += m_pVT->GetLineLeading(m_pSection->m_SecInfo);
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y += fLineAscent;
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nStart = 0;
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switch (m_pVT->GetAlignment(m_pSection->m_SecInfo)) {
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case 0:
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pLine->m_LineInfo.fLineX = fNodeWidth * VARIABLETEXT_HALF;
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break;
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case 1:
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nStart = (m_pVT->m_nCharArray - m_pSection->m_WordArray.GetSize()) / 2;
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pLine->m_LineInfo.fLineX =
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fNodeWidth * nStart - fNodeWidth * VARIABLETEXT_HALF;
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break;
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case 2:
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nStart = m_pVT->m_nCharArray - m_pSection->m_WordArray.GetSize();
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pLine->m_LineInfo.fLineX =
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fNodeWidth * nStart - fNodeWidth * VARIABLETEXT_HALF;
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break;
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}
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for (int32_t w = 0, sz = m_pSection->m_WordArray.GetSize(); w < sz; w++) {
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if (w >= m_pVT->m_nCharArray) {
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break;
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}
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fNextWidth = 0;
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if (CPVT_WordInfo* pNextWord = m_pSection->m_WordArray.GetAt(w + 1)) {
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pNextWord->fWordTail = 0;
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fNextWidth = m_pVT->GetWordWidth(*pNextWord);
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}
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if (CPVT_WordInfo* pWord = m_pSection->m_WordArray.GetAt(w)) {
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pWord->fWordTail = 0;
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FX_FLOAT fWordWidth = m_pVT->GetWordWidth(*pWord);
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FX_FLOAT fWordAscent = m_pVT->GetWordAscent(*pWord);
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FX_FLOAT fWordDescent = m_pVT->GetWordDescent(*pWord);
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x = (FX_FLOAT)(fNodeWidth * (w + nStart + 0.5) -
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fWordWidth * VARIABLETEXT_HALF);
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pWord->fWordX = x;
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pWord->fWordY = y;
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if (w == 0) {
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pLine->m_LineInfo.fLineX = x;
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}
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if (w != m_pSection->m_WordArray.GetSize() - 1) {
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pWord->fWordTail =
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(fNodeWidth - (fWordWidth + fNextWidth) * VARIABLETEXT_HALF > 0
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? fNodeWidth - (fWordWidth + fNextWidth) * VARIABLETEXT_HALF
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: 0);
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} else {
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pWord->fWordTail = 0;
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}
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x += fWordWidth;
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fLineAscent = std::max(fLineAscent, fWordAscent);
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fLineDescent = std::min(fLineDescent, fWordDescent);
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}
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}
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pLine->m_LineInfo.nBeginWordIndex = 0;
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pLine->m_LineInfo.nEndWordIndex = m_pSection->m_WordArray.GetSize() - 1;
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pLine->m_LineInfo.fLineY = y;
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pLine->m_LineInfo.fLineWidth = x - pLine->m_LineInfo.fLineX;
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pLine->m_LineInfo.fLineAscent = fLineAscent;
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pLine->m_LineInfo.fLineDescent = fLineDescent;
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y -= fLineDescent;
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}
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return m_rcRet = CPVT_FloatRect(0, 0, x, y);
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}
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CFX_SizeF CTypeset::GetEditSize(FX_FLOAT fFontSize) {
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ASSERT(m_pSection);
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ASSERT(m_pVT);
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SplitLines(FALSE, fFontSize);
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return CFX_SizeF(m_rcRet.Width(), m_rcRet.Height());
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}
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CPVT_FloatRect CTypeset::Typeset() {
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ASSERT(m_pVT);
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m_pSection->m_LineArray.Empty();
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SplitLines(TRUE, 0.0f);
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m_pSection->m_LineArray.Clear();
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OutputLines();
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return m_rcRet;
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}
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void CTypeset::SplitLines(FX_BOOL bTypeset, FX_FLOAT fFontSize) {
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ASSERT(m_pVT);
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ASSERT(m_pSection);
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int32_t nLineHead = 0;
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int32_t nLineTail = 0;
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FX_FLOAT fMaxX = 0.0f, fMaxY = 0.0f;
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FX_FLOAT fLineWidth = 0.0f, fBackupLineWidth = 0.0f;
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FX_FLOAT fLineAscent = 0.0f, fBackupLineAscent = 0.0f;
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FX_FLOAT fLineDescent = 0.0f, fBackupLineDescent = 0.0f;
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int32_t nWordStartPos = 0;
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FX_BOOL bFullWord = FALSE;
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int32_t nLineFullWordIndex = 0;
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int32_t nCharIndex = 0;
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CPVT_LineInfo line;
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FX_FLOAT fWordWidth = 0;
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FX_FLOAT fTypesetWidth = std::max(
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m_pVT->GetPlateWidth() - m_pVT->GetLineIndent(m_pSection->m_SecInfo),
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0.0f);
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int32_t nTotalWords = m_pSection->m_WordArray.GetSize();
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FX_BOOL bOpened = FALSE;
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if (nTotalWords > 0) {
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int32_t i = 0;
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while (i < nTotalWords) {
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CPVT_WordInfo* pWord = m_pSection->m_WordArray.GetAt(i);
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CPVT_WordInfo* pOldWord = pWord;
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if (i > 0) {
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pOldWord = m_pSection->m_WordArray.GetAt(i - 1);
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}
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if (pWord) {
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if (bTypeset) {
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fLineAscent =
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std::max(fLineAscent, m_pVT->GetWordAscent(*pWord, TRUE));
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fLineDescent =
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std::min(fLineDescent, m_pVT->GetWordDescent(*pWord, TRUE));
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fWordWidth = m_pVT->GetWordWidth(*pWord);
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} else {
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fLineAscent =
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std::max(fLineAscent, m_pVT->GetWordAscent(*pWord, fFontSize));
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fLineDescent =
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std::min(fLineDescent, m_pVT->GetWordDescent(*pWord, fFontSize));
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fWordWidth = m_pVT->GetWordWidth(
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pWord->nFontIndex, pWord->Word, m_pVT->m_wSubWord,
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m_pVT->m_fCharSpace, m_pVT->m_nHorzScale, fFontSize,
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pWord->fWordTail, 0);
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}
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if (!bOpened) {
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if (IsOpenStylePunctuation(pWord->Word)) {
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bOpened = TRUE;
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bFullWord = TRUE;
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} else if (pOldWord) {
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if (NeedDivision(pOldWord->Word, pWord->Word)) {
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bFullWord = TRUE;
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}
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}
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} else {
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if (!IsSpace(pWord->Word) && !IsOpenStylePunctuation(pWord->Word)) {
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bOpened = FALSE;
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}
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}
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if (bFullWord) {
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bFullWord = FALSE;
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if (nCharIndex > 0) {
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nLineFullWordIndex++;
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}
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nWordStartPos = i;
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fBackupLineWidth = fLineWidth;
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fBackupLineAscent = fLineAscent;
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fBackupLineDescent = fLineDescent;
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}
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nCharIndex++;
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}
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if (m_pVT->m_bLimitWidth && fTypesetWidth > 0 &&
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fLineWidth + fWordWidth > fTypesetWidth) {
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if (nLineFullWordIndex > 0) {
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i = nWordStartPos;
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fLineWidth = fBackupLineWidth;
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fLineAscent = fBackupLineAscent;
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fLineDescent = fBackupLineDescent;
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}
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if (nCharIndex == 1) {
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fLineWidth = fWordWidth;
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i++;
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}
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nLineTail = i - 1;
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if (bTypeset) {
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line.nBeginWordIndex = nLineHead;
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line.nEndWordIndex = nLineTail;
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line.nTotalWord = nLineTail - nLineHead + 1;
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line.fLineWidth = fLineWidth;
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line.fLineAscent = fLineAscent;
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line.fLineDescent = fLineDescent;
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m_pSection->AddLine(line);
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}
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fMaxY += (fLineAscent + m_pVT->GetLineLeading(m_pSection->m_SecInfo));
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fMaxY -= fLineDescent;
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fMaxX = std::max(fLineWidth, fMaxX);
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nLineHead = i;
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fLineWidth = 0.0f;
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fLineAscent = 0.0f;
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fLineDescent = 0.0f;
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nCharIndex = 0;
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nLineFullWordIndex = 0;
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bFullWord = FALSE;
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} else {
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fLineWidth += fWordWidth;
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i++;
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}
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}
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if (nLineHead <= nTotalWords - 1) {
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nLineTail = nTotalWords - 1;
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if (bTypeset) {
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line.nBeginWordIndex = nLineHead;
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line.nEndWordIndex = nLineTail;
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line.nTotalWord = nLineTail - nLineHead + 1;
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line.fLineWidth = fLineWidth;
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line.fLineAscent = fLineAscent;
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line.fLineDescent = fLineDescent;
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m_pSection->AddLine(line);
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}
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fMaxY += (fLineAscent + m_pVT->GetLineLeading(m_pSection->m_SecInfo));
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fMaxY -= fLineDescent;
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fMaxX = std::max(fLineWidth, fMaxX);
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}
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} else {
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if (bTypeset) {
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fLineAscent = m_pVT->GetLineAscent(m_pSection->m_SecInfo);
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fLineDescent = m_pVT->GetLineDescent(m_pSection->m_SecInfo);
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} else {
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fLineAscent =
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m_pVT->GetFontAscent(m_pVT->GetDefaultFontIndex(), fFontSize);
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fLineDescent =
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m_pVT->GetFontDescent(m_pVT->GetDefaultFontIndex(), fFontSize);
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}
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if (bTypeset) {
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line.nBeginWordIndex = -1;
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line.nEndWordIndex = -1;
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line.nTotalWord = 0;
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line.fLineWidth = 0;
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line.fLineAscent = fLineAscent;
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line.fLineDescent = fLineDescent;
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m_pSection->AddLine(line);
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}
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fMaxY += m_pVT->GetLineLeading(m_pSection->m_SecInfo) + fLineAscent -
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fLineDescent;
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}
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m_rcRet = CPVT_FloatRect(0, 0, fMaxX, fMaxY);
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}
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void CTypeset::OutputLines() {
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ASSERT(m_pVT);
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ASSERT(m_pSection);
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FX_FLOAT fMinX = 0.0f, fMinY = 0.0f, fMaxX = 0.0f, fMaxY = 0.0f;
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FX_FLOAT fPosX = 0.0f, fPosY = 0.0f;
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FX_FLOAT fLineIndent = m_pVT->GetLineIndent(m_pSection->m_SecInfo);
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FX_FLOAT fTypesetWidth = std::max(m_pVT->GetPlateWidth() - fLineIndent, 0.0f);
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switch (m_pVT->GetAlignment(m_pSection->m_SecInfo)) {
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default:
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case 0:
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fMinX = 0.0f;
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break;
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case 1:
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fMinX = (fTypesetWidth - m_rcRet.Width()) * VARIABLETEXT_HALF;
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break;
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case 2:
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fMinX = fTypesetWidth - m_rcRet.Width();
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break;
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}
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fMaxX = fMinX + m_rcRet.Width();
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fMinY = 0.0f;
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fMaxY = m_rcRet.Height();
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int32_t nTotalLines = m_pSection->m_LineArray.GetSize();
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if (nTotalLines > 0) {
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m_pSection->m_SecInfo.nTotalLine = nTotalLines;
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for (int32_t l = 0; l < nTotalLines; l++) {
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if (CLine* pLine = m_pSection->m_LineArray.GetAt(l)) {
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switch (m_pVT->GetAlignment(m_pSection->m_SecInfo)) {
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default:
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case 0:
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fPosX = 0;
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break;
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case 1:
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fPosX = (fTypesetWidth - pLine->m_LineInfo.fLineWidth) *
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VARIABLETEXT_HALF;
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break;
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case 2:
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fPosX = fTypesetWidth - pLine->m_LineInfo.fLineWidth;
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break;
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}
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fPosX += fLineIndent;
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fPosY += m_pVT->GetLineLeading(m_pSection->m_SecInfo);
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fPosY += pLine->m_LineInfo.fLineAscent;
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pLine->m_LineInfo.fLineX = fPosX - fMinX;
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pLine->m_LineInfo.fLineY = fPosY - fMinY;
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for (int32_t w = pLine->m_LineInfo.nBeginWordIndex;
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w <= pLine->m_LineInfo.nEndWordIndex; w++) {
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if (CPVT_WordInfo* pWord = m_pSection->m_WordArray.GetAt(w)) {
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pWord->fWordX = fPosX - fMinX;
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if (pWord->pWordProps) {
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switch (pWord->pWordProps->nScriptType) {
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default:
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case CPDF_VariableText::ScriptType::Normal:
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pWord->fWordY = fPosY - fMinY;
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break;
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case CPDF_VariableText::ScriptType::Super:
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pWord->fWordY = fPosY - m_pVT->GetWordAscent(*pWord) - fMinY;
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break;
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case CPDF_VariableText::ScriptType::Sub:
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pWord->fWordY = fPosY - m_pVT->GetWordDescent(*pWord) - fMinY;
|
break;
|
}
|
} else {
|
pWord->fWordY = fPosY - fMinY;
|
}
|
fPosX += m_pVT->GetWordWidth(*pWord);
|
}
|
}
|
fPosY -= pLine->m_LineInfo.fLineDescent;
|
}
|
}
|
}
|
m_rcRet = CPVT_FloatRect(fMinX, fMinY, fMaxX, fMaxY);
|
}
|
