You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
288 lines
8.2 KiB
288 lines
8.2 KiB
// Copyright 2014 PDFium Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file.
|
|
|
|
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
|
|
|
|
#include "xfa/fgas/font/cfgas_gefont.h"
|
|
|
|
#include <memory>
|
|
#include <utility>
|
|
|
|
#include "build/build_config.h"
|
|
#include "core/fpdfapi/font/cpdf_font.h"
|
|
#include "core/fxcrt/fx_codepage.h"
|
|
#include "core/fxge/cfx_font.h"
|
|
#include "core/fxge/cfx_substfont.h"
|
|
#include "core/fxge/cfx_unicodeencodingex.h"
|
|
#include "core/fxge/fx_font.h"
|
|
#include "third_party/base/ptr_util.h"
|
|
#include "xfa/fgas/font/fgas_fontutils.h"
|
|
|
|
// static
|
|
RetainPtr<CFGAS_GEFont> CFGAS_GEFont::LoadFont(const wchar_t* pszFontFamily,
|
|
uint32_t dwFontStyles,
|
|
uint16_t wCodePage,
|
|
CFGAS_FontMgr* pFontMgr) {
|
|
#if defined(OS_WIN)
|
|
auto pFont = pdfium::MakeRetain<CFGAS_GEFont>(pFontMgr);
|
|
if (!pFont->LoadFontInternal(pszFontFamily, dwFontStyles, wCodePage))
|
|
return nullptr;
|
|
return pFont;
|
|
#else
|
|
if (!pFontMgr)
|
|
return nullptr;
|
|
return pFontMgr->GetFontByCodePage(wCodePage, dwFontStyles, pszFontFamily);
|
|
#endif
|
|
}
|
|
|
|
// static
|
|
RetainPtr<CFGAS_GEFont> CFGAS_GEFont::LoadFont(
|
|
const RetainPtr<CPDF_Font>& pPDFFont,
|
|
CFGAS_FontMgr* pFontMgr) {
|
|
auto pFont = pdfium::MakeRetain<CFGAS_GEFont>(pFontMgr);
|
|
if (!pFont->LoadFontInternal(pPDFFont))
|
|
return nullptr;
|
|
|
|
return pFont;
|
|
}
|
|
|
|
// static
|
|
RetainPtr<CFGAS_GEFont> CFGAS_GEFont::LoadFont(
|
|
std::unique_ptr<CFX_Font> pInternalFont,
|
|
CFGAS_FontMgr* pFontMgr) {
|
|
auto pFont = pdfium::MakeRetain<CFGAS_GEFont>(pFontMgr);
|
|
if (!pFont->LoadFontInternal(std::move(pInternalFont)))
|
|
return nullptr;
|
|
return pFont;
|
|
}
|
|
|
|
// static
|
|
RetainPtr<CFGAS_GEFont> CFGAS_GEFont::LoadStockFont(
|
|
CPDF_Document* pDoc,
|
|
CFGAS_FontMgr* pMgr,
|
|
const ByteString& font_family) {
|
|
RetainPtr<CPDF_Font> stock_font =
|
|
CPDF_Font::GetStockFont(pDoc, font_family.AsStringView());
|
|
return stock_font ? CFGAS_GEFont::LoadFont(stock_font, pMgr) : nullptr;
|
|
}
|
|
|
|
CFGAS_GEFont::CFGAS_GEFont(CFGAS_FontMgr* pFontMgr) : m_pFontMgr(pFontMgr) {}
|
|
|
|
CFGAS_GEFont::~CFGAS_GEFont() = default;
|
|
|
|
#if defined(OS_WIN)
|
|
bool CFGAS_GEFont::LoadFontInternal(const wchar_t* pszFontFamily,
|
|
uint32_t dwFontStyles,
|
|
uint16_t wCodePage) {
|
|
if (m_pFont)
|
|
return false;
|
|
ByteString csFontFamily;
|
|
if (pszFontFamily)
|
|
csFontFamily = WideString(pszFontFamily).ToDefANSI();
|
|
|
|
int32_t iWeight =
|
|
FontStyleIsForceBold(dwFontStyles) ? FXFONT_FW_BOLD : FXFONT_FW_NORMAL;
|
|
m_pFont = pdfium::MakeUnique<CFX_Font>();
|
|
if (FontStyleIsItalic(dwFontStyles) && FontStyleIsForceBold(dwFontStyles))
|
|
csFontFamily += ",BoldItalic";
|
|
else if (FontStyleIsForceBold(dwFontStyles))
|
|
csFontFamily += ",Bold";
|
|
else if (FontStyleIsItalic(dwFontStyles))
|
|
csFontFamily += ",Italic";
|
|
|
|
m_pFont->LoadSubst(csFontFamily, true, dwFontStyles, iWeight, 0, wCodePage,
|
|
false);
|
|
return m_pFont->GetFaceRec() && InitFont();
|
|
}
|
|
#endif // defined(OS_WIN)
|
|
|
|
bool CFGAS_GEFont::LoadFontInternal(const RetainPtr<CPDF_Font>& pPDFFont) {
|
|
CFX_Font* pExternalFont = pPDFFont->GetFont();
|
|
if (m_pFont || !pExternalFont)
|
|
return false;
|
|
|
|
m_pFont = pExternalFont;
|
|
if (!InitFont())
|
|
return false;
|
|
|
|
m_pPDFFont = pPDFFont; // Keep pPDFFont alive for the duration.
|
|
return true;
|
|
}
|
|
|
|
bool CFGAS_GEFont::LoadFontInternal(std::unique_ptr<CFX_Font> pInternalFont) {
|
|
if (m_pFont || !pInternalFont)
|
|
return false;
|
|
|
|
m_pFont = std::move(pInternalFont);
|
|
return InitFont();
|
|
}
|
|
|
|
bool CFGAS_GEFont::InitFont() {
|
|
if (!m_pFont)
|
|
return false;
|
|
|
|
if (m_pFontEncoding)
|
|
return true;
|
|
|
|
m_pFontEncoding = FX_CreateFontEncodingEx(m_pFont.Get());
|
|
return !!m_pFontEncoding;
|
|
}
|
|
|
|
WideString CFGAS_GEFont::GetFamilyName() const {
|
|
CFX_SubstFont* subst_font = m_pFont->GetSubstFont();
|
|
ByteString family_name = subst_font && !subst_font->m_Family.IsEmpty()
|
|
? subst_font->m_Family
|
|
: m_pFont->GetFamilyName();
|
|
return WideString::FromDefANSI(family_name.AsStringView());
|
|
}
|
|
|
|
uint32_t CFGAS_GEFont::GetFontStyles() const {
|
|
ASSERT(m_pFont);
|
|
if (m_dwLogFontStyle.has_value())
|
|
return m_dwLogFontStyle.value();
|
|
|
|
uint32_t dwStyles = 0;
|
|
auto* pSubstFont = m_pFont->GetSubstFont();
|
|
if (pSubstFont) {
|
|
if (pSubstFont->m_Weight == FXFONT_FW_BOLD)
|
|
dwStyles |= FXFONT_FORCE_BOLD;
|
|
} else {
|
|
if (m_pFont->IsBold())
|
|
dwStyles |= FXFONT_FORCE_BOLD;
|
|
if (m_pFont->IsItalic())
|
|
dwStyles |= FXFONT_ITALIC;
|
|
}
|
|
return dwStyles;
|
|
}
|
|
|
|
bool CFGAS_GEFont::GetCharWidth(wchar_t wUnicode, int32_t* pWidth) {
|
|
auto it = m_CharWidthMap.find(wUnicode);
|
|
*pWidth = it != m_CharWidthMap.end() ? it->second : 0;
|
|
if (*pWidth == 65535)
|
|
return false;
|
|
|
|
if (*pWidth > 0)
|
|
return true;
|
|
|
|
RetainPtr<CFGAS_GEFont> pFont;
|
|
int32_t iGlyph;
|
|
std::tie(iGlyph, pFont) = GetGlyphIndexAndFont(wUnicode, true);
|
|
if (iGlyph != 0xFFFF && pFont) {
|
|
if (pFont == this) {
|
|
*pWidth = m_pFont->GetGlyphWidth(iGlyph);
|
|
if (*pWidth < 0)
|
|
*pWidth = -1;
|
|
} else if (pFont->GetCharWidth(wUnicode, pWidth)) {
|
|
return true;
|
|
}
|
|
} else {
|
|
*pWidth = -1;
|
|
}
|
|
|
|
m_CharWidthMap[wUnicode] = *pWidth;
|
|
return *pWidth > 0;
|
|
}
|
|
|
|
bool CFGAS_GEFont::GetCharBBox(wchar_t wUnicode, FX_RECT* bbox) {
|
|
auto it = m_BBoxMap.find(wUnicode);
|
|
if (it != m_BBoxMap.end()) {
|
|
*bbox = it->second;
|
|
return true;
|
|
}
|
|
|
|
RetainPtr<CFGAS_GEFont> pFont;
|
|
int32_t iGlyph;
|
|
std::tie(iGlyph, pFont) = GetGlyphIndexAndFont(wUnicode, true);
|
|
if (!pFont || iGlyph == 0xFFFF)
|
|
return false;
|
|
|
|
if (pFont.Get() != this)
|
|
return pFont->GetCharBBox(wUnicode, bbox);
|
|
|
|
FX_RECT rtBBox;
|
|
if (!m_pFont->GetGlyphBBox(iGlyph, &rtBBox))
|
|
return false;
|
|
|
|
m_BBoxMap[wUnicode] = rtBBox;
|
|
*bbox = rtBBox;
|
|
return true;
|
|
}
|
|
|
|
bool CFGAS_GEFont::GetBBox(FX_RECT* bbox) {
|
|
return m_pFont->GetBBox(bbox);
|
|
}
|
|
|
|
int32_t CFGAS_GEFont::GetGlyphIndex(wchar_t wUnicode) {
|
|
int32_t glyph;
|
|
RetainPtr<CFGAS_GEFont> font;
|
|
std::tie(glyph, font) = GetGlyphIndexAndFont(wUnicode, true);
|
|
return glyph;
|
|
}
|
|
|
|
std::pair<int32_t, RetainPtr<CFGAS_GEFont>> CFGAS_GEFont::GetGlyphIndexAndFont(
|
|
wchar_t wUnicode,
|
|
bool bRecursive) {
|
|
int32_t iGlyphIndex = m_pFontEncoding->GlyphFromCharCode(wUnicode);
|
|
if (iGlyphIndex > 0)
|
|
return {iGlyphIndex, pdfium::WrapRetain(this)};
|
|
|
|
const FGAS_FONTUSB* pFontUSB = FGAS_GetUnicodeBitField(wUnicode);
|
|
if (!pFontUSB)
|
|
return {0xFFFF, nullptr};
|
|
|
|
uint16_t wBitField = pFontUSB->wBitField;
|
|
if (wBitField >= 128)
|
|
return {0xFFFF, nullptr};
|
|
|
|
auto it = m_FontMapper.find(wUnicode);
|
|
if (it != m_FontMapper.end() && it->second && it->second.Get() != this) {
|
|
RetainPtr<CFGAS_GEFont> font;
|
|
std::tie(iGlyphIndex, font) =
|
|
it->second->GetGlyphIndexAndFont(wUnicode, false);
|
|
if (iGlyphIndex != 0xFFFF) {
|
|
for (size_t i = 0; i < m_SubstFonts.size(); ++i) {
|
|
if (m_SubstFonts[i] == it->second)
|
|
return {(iGlyphIndex | ((i + 1) << 24)), it->second};
|
|
}
|
|
}
|
|
}
|
|
if (!m_pFontMgr || !bRecursive)
|
|
return {0xFFFF, nullptr};
|
|
|
|
WideString wsFamily = GetFamilyName();
|
|
RetainPtr<CFGAS_GEFont> pFont =
|
|
m_pFontMgr->GetFontByUnicode(wUnicode, GetFontStyles(), wsFamily.c_str());
|
|
#if !defined(OS_WIN)
|
|
if (!pFont)
|
|
pFont = m_pFontMgr->GetFontByUnicode(wUnicode, GetFontStyles(), nullptr);
|
|
#endif
|
|
if (!pFont || pFont == this) // Avoids direct cycles below.
|
|
return {0xFFFF, nullptr};
|
|
|
|
m_FontMapper[wUnicode] = pFont;
|
|
m_SubstFonts.push_back(pFont);
|
|
|
|
RetainPtr<CFGAS_GEFont> font;
|
|
std::tie(iGlyphIndex, font) = pFont->GetGlyphIndexAndFont(wUnicode, false);
|
|
if (iGlyphIndex == 0xFFFF)
|
|
return {0xFFFF, nullptr};
|
|
|
|
return {(iGlyphIndex | (m_SubstFonts.size() << 24)), pFont};
|
|
}
|
|
|
|
int32_t CFGAS_GEFont::GetAscent() const {
|
|
return m_pFont->GetAscent();
|
|
}
|
|
|
|
int32_t CFGAS_GEFont::GetDescent() const {
|
|
return m_pFont->GetDescent();
|
|
}
|
|
|
|
RetainPtr<CFGAS_GEFont> CFGAS_GEFont::GetSubstFont(int32_t iGlyphIndex) {
|
|
iGlyphIndex = static_cast<uint32_t>(iGlyphIndex) >> 24;
|
|
if (iGlyphIndex == 0)
|
|
return pdfium::WrapRetain(this);
|
|
return m_SubstFonts[iGlyphIndex - 1];
|
|
}
|