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// Copyright 2016 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
#include "core/fpdfapi/render/cpdf_charposlist.h"
#include "core/fpdfapi/font/cpdf_cidfont.h"
#include "core/fpdfapi/font/cpdf_font.h"
CPDF_CharPosList::CPDF_CharPosList() {
m_pCharPos = nullptr;
}
CPDF_CharPosList::~CPDF_CharPosList() {
FX_Free(m_pCharPos);
}
void CPDF_CharPosList::Load(int nChars,
uint32_t* pCharCodes,
FX_FLOAT* pCharPos,
CPDF_Font* pFont,
FX_FLOAT FontSize) {
m_pCharPos = FX_Alloc(FXTEXT_CHARPOS, nChars);
m_nChars = 0;
CPDF_CIDFont* pCIDFont = pFont->AsCIDFont();
bool bVertWriting = pCIDFont && pCIDFont->IsVertWriting();
for (int iChar = 0; iChar < nChars; iChar++) {
uint32_t CharCode =
nChars == 1 ? (uint32_t)(uintptr_t)pCharCodes : pCharCodes[iChar];
if (CharCode == (uint32_t)-1) {
continue;
}
bool bVert = false;
FXTEXT_CHARPOS& charpos = m_pCharPos[m_nChars++];
if (pCIDFont) {
charpos.m_bFontStyle = true;
}
charpos.m_GlyphIndex = pFont->GlyphFromCharCode(CharCode, &bVert);
if (charpos.m_GlyphIndex != static_cast<uint32_t>(-1)) {
charpos.m_FallbackFontPosition = -1;
} else {
charpos.m_FallbackFontPosition =
pFont->FallbackFontFromCharcode(CharCode);
charpos.m_GlyphIndex = pFont->FallbackGlyphFromCharcode(
charpos.m_FallbackFontPosition, CharCode);
}
// TODO(npm): Figure out how this affects m_ExtGID
#if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
charpos.m_ExtGID = pFont->GlyphFromCharCodeExt(CharCode);
#endif
if (!pFont->IsEmbedded() && !pFont->IsCIDFont()) {
charpos.m_FontCharWidth = pFont->GetCharWidthF(CharCode);
} else {
charpos.m_FontCharWidth = 0;
}
charpos.m_OriginX = iChar ? pCharPos[iChar - 1] : 0;
charpos.m_OriginY = 0;
charpos.m_bGlyphAdjust = false;
if (!pCIDFont) {
continue;
}
uint16_t CID = pCIDFont->CIDFromCharCode(CharCode);
if (bVertWriting) {
charpos.m_OriginY = charpos.m_OriginX;
charpos.m_OriginX = 0;
short vx, vy;
pCIDFont->GetVertOrigin(CID, vx, vy);
charpos.m_OriginX -= FontSize * vx / 1000;
charpos.m_OriginY -= FontSize * vy / 1000;
}
const uint8_t* pTransform = pCIDFont->GetCIDTransform(CID);
if (pTransform && !bVert) {
charpos.m_AdjustMatrix[0] = pCIDFont->CIDTransformToFloat(pTransform[0]);
charpos.m_AdjustMatrix[2] = pCIDFont->CIDTransformToFloat(pTransform[2]);
charpos.m_AdjustMatrix[1] = pCIDFont->CIDTransformToFloat(pTransform[1]);
charpos.m_AdjustMatrix[3] = pCIDFont->CIDTransformToFloat(pTransform[3]);
charpos.m_OriginX +=
pCIDFont->CIDTransformToFloat(pTransform[4]) * FontSize;
charpos.m_OriginY +=
pCIDFont->CIDTransformToFloat(pTransform[5]) * FontSize;
charpos.m_bGlyphAdjust = true;
}
}
}
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