| // 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 "core/fxge/cfx_substfont.h" |
| #include "core/fxge/cfx_unicodeencoding.h" |
| #include "core/fxge/cfx_unicodeencodingex.h" |
| #include "third_party/base/ptr_util.h" |
| #include "xfa/fgas/crt/fgas_codepage.h" |
| #include "xfa/fgas/font/fgas_fontutils.h" |
| #include "xfa/fxfa/xfa_fontmgr.h" |
| |
| // static |
| CFGAS_GEFont* CFGAS_GEFont::LoadFont(const FX_WCHAR* pszFontFamily, |
| uint32_t dwFontStyles, |
| uint16_t wCodePage, |
| CFGAS_FontMgr* pFontMgr) { |
| #if _FXM_PLATFORM_ != _FXM_PLATFORM_WINDOWS_ |
| if (pFontMgr) |
| return pFontMgr->GetFontByCodePage(wCodePage, dwFontStyles, pszFontFamily); |
| return nullptr; |
| #else |
| CFGAS_GEFont* pFont = new CFGAS_GEFont(pFontMgr); |
| if (!pFont->LoadFontInternal(pszFontFamily, dwFontStyles, wCodePage)) { |
| pFont->Release(); |
| return nullptr; |
| } |
| return pFont; |
| #endif |
| } |
| |
| // static |
| CFGAS_GEFont* CFGAS_GEFont::LoadFont(CFX_Font* pExternalFont, |
| CFGAS_FontMgr* pFontMgr) { |
| CFGAS_GEFont* pFont = new CFGAS_GEFont(pFontMgr); |
| if (!pFont->LoadFontInternal(pExternalFont)) { |
| pFont->Release(); |
| return nullptr; |
| } |
| return pFont; |
| } |
| |
| // static |
| CFGAS_GEFont* CFGAS_GEFont::LoadFont(std::unique_ptr<CFX_Font> pInternalFont, |
| CFGAS_FontMgr* pFontMgr) { |
| CFGAS_GEFont* pFont = new CFGAS_GEFont(pFontMgr); |
| if (!pFont->LoadFontInternal(std::move(pInternalFont))) { |
| pFont->Release(); |
| return nullptr; |
| } |
| return pFont; |
| } |
| |
| #if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_ |
| // static |
| CFGAS_GEFont* CFGAS_GEFont::LoadFont(const uint8_t* pBuffer, |
| int32_t iLength, |
| CFGAS_FontMgr* pFontMgr) { |
| CFGAS_GEFont* pFont = new CFGAS_GEFont(pFontMgr); |
| if (!pFont->LoadFontInternal(pBuffer, iLength)) { |
| pFont->Release(); |
| return nullptr; |
| } |
| return pFont; |
| } |
| |
| // static |
| CFGAS_GEFont* CFGAS_GEFont::LoadFont(IFX_Stream* pFontStream, |
| CFGAS_FontMgr* pFontMgr, |
| bool bSaveStream) { |
| CFGAS_GEFont* pFont = new CFGAS_GEFont(pFontMgr); |
| if (!pFont->LoadFontInternal(pFontStream, bSaveStream)) { |
| pFont->Release(); |
| return nullptr; |
| } |
| return pFont; |
| } |
| #endif // _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_ |
| |
| CFGAS_GEFont::CFGAS_GEFont(CFGAS_FontMgr* pFontMgr) |
| : |
| #if _FXM_PLATFORM_ != _FXM_PLATFORM_WINDOWS_ |
| m_bUseLogFontStyle(false), |
| m_dwLogFontStyle(0), |
| #endif |
| m_pFont(nullptr), |
| m_pSrcFont(nullptr), |
| m_pFontMgr(pFontMgr), |
| m_iRefCount(1), |
| m_bExternalFont(false), |
| m_pProvider(nullptr) { |
| } |
| |
| CFGAS_GEFont::CFGAS_GEFont(CFGAS_GEFont* src, uint32_t dwFontStyles) |
| : |
| #if _FXM_PLATFORM_ != _FXM_PLATFORM_WINDOWS_ |
| m_bUseLogFontStyle(false), |
| m_dwLogFontStyle(0), |
| #endif |
| m_pFont(nullptr), |
| m_pSrcFont(src), |
| m_pFontMgr(src->m_pFontMgr), |
| m_iRefCount(1), |
| m_bExternalFont(false), |
| m_pProvider(nullptr) { |
| ASSERT(m_pSrcFont->m_pFont); |
| m_pSrcFont->Retain(); |
| m_pFont = new CFX_Font; |
| m_pFont->LoadClone(m_pSrcFont->m_pFont); |
| CFX_SubstFont* pSubst = m_pFont->GetSubstFont(); |
| if (!pSubst) { |
| pSubst = new CFX_SubstFont; |
| m_pFont->SetSubstFont(std::unique_ptr<CFX_SubstFont>(pSubst)); |
| } |
| pSubst->m_Weight = |
| (dwFontStyles & FX_FONTSTYLE_Bold) ? FXFONT_FW_BOLD : FXFONT_FW_NORMAL; |
| if (dwFontStyles & FX_FONTSTYLE_Italic) |
| pSubst->m_SubstFlags |= FXFONT_SUBST_ITALIC; |
| InitFont(); |
| } |
| |
| CFGAS_GEFont::~CFGAS_GEFont() { |
| for (int32_t i = 0; i < m_SubstFonts.GetSize(); i++) |
| m_SubstFonts[i]->Release(); |
| |
| m_SubstFonts.RemoveAll(); |
| m_FontMapper.clear(); |
| |
| if (!m_bExternalFont) |
| delete m_pFont; |
| |
| // If it is a shallow copy of another source font, |
| // decrease the refcount of the source font. |
| if (m_pSrcFont) |
| m_pSrcFont->Release(); |
| } |
| |
| void CFGAS_GEFont::Release() { |
| if (--m_iRefCount < 1) { |
| if (m_pFontMgr) |
| m_pFontMgr->RemoveFont(this); |
| delete this; |
| } |
| } |
| CFGAS_GEFont* CFGAS_GEFont::Retain() { |
| ++m_iRefCount; |
| return this; |
| } |
| |
| #if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_ |
| bool CFGAS_GEFont::LoadFontInternal(const FX_WCHAR* pszFontFamily, |
| uint32_t dwFontStyles, |
| uint16_t wCodePage) { |
| if (m_pFont) |
| return false; |
| CFX_ByteString csFontFamily; |
| if (pszFontFamily) |
| csFontFamily = CFX_ByteString::FromUnicode(pszFontFamily); |
| uint32_t dwFlags = 0; |
| if (dwFontStyles & FX_FONTSTYLE_FixedPitch) |
| dwFlags |= FXFONT_FIXED_PITCH; |
| if (dwFontStyles & FX_FONTSTYLE_Serif) |
| dwFlags |= FXFONT_SERIF; |
| if (dwFontStyles & FX_FONTSTYLE_Symbolic) |
| dwFlags |= FXFONT_SYMBOLIC; |
| if (dwFontStyles & FX_FONTSTYLE_Script) |
| dwFlags |= FXFONT_SCRIPT; |
| if (dwFontStyles & FX_FONTSTYLE_Italic) |
| dwFlags |= FXFONT_ITALIC; |
| if (dwFontStyles & FX_FONTSTYLE_Bold) |
| dwFlags |= FXFONT_BOLD; |
| if (dwFontStyles & FX_FONTSTYLE_ExactMatch) |
| dwFlags |= FXFONT_EXACTMATCH; |
| int32_t iWeight = |
| (dwFontStyles & FX_FONTSTYLE_Bold) ? FXFONT_FW_BOLD : FXFONT_FW_NORMAL; |
| m_pFont = new CFX_Font; |
| if ((dwFlags & FXFONT_ITALIC) && (dwFlags & FXFONT_BOLD)) |
| csFontFamily += ",BoldItalic"; |
| else if (dwFlags & FXFONT_BOLD) |
| csFontFamily += ",Bold"; |
| else if (dwFlags & FXFONT_ITALIC) |
| csFontFamily += ",Italic"; |
| m_pFont->LoadSubst(csFontFamily, true, dwFlags, iWeight, 0, wCodePage, false); |
| if (!m_pFont->GetFace()) |
| return false; |
| return InitFont(); |
| } |
| |
| bool CFGAS_GEFont::LoadFontInternal(const uint8_t* pBuffer, int32_t length) { |
| if (m_pFont) |
| return false; |
| |
| m_pFont = new CFX_Font; |
| if (!m_pFont->LoadEmbedded(pBuffer, length)) |
| return false; |
| return InitFont(); |
| } |
| |
| bool CFGAS_GEFont::LoadFontInternal(IFX_Stream* pFontStream, bool bSaveStream) { |
| if (m_pFont || m_pFileRead || !pFontStream || pFontStream->GetLength() < 1) |
| return false; |
| if (bSaveStream) |
| m_pStream.reset(pFontStream); |
| |
| m_pFileRead.reset(pFontStream->MakeSeekableReadStream()); |
| m_pFont = new CFX_Font; |
| if (m_pFont->LoadFile(m_pFileRead.get())) |
| return InitFont(); |
| m_pFileRead.reset(); |
| return false; |
| } |
| #endif // _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_ |
| |
| bool CFGAS_GEFont::LoadFontInternal(CFX_Font* pExternalFont) { |
| if (m_pFont || !pExternalFont) |
| return false; |
| |
| m_pFont = pExternalFont; |
| m_bExternalFont = true; |
| return InitFont(); |
| } |
| |
| bool CFGAS_GEFont::LoadFontInternal(std::unique_ptr<CFX_Font> pInternalFont) { |
| if (m_pFont || !pInternalFont) |
| return false; |
| |
| m_pFont = pInternalFont.release(); |
| m_bExternalFont = false; |
| return InitFont(); |
| } |
| |
| bool CFGAS_GEFont::InitFont() { |
| if (!m_pFont) |
| return false; |
| if (!m_pFontEncoding) { |
| m_pFontEncoding.reset(FX_CreateFontEncodingEx(m_pFont)); |
| if (!m_pFontEncoding) |
| return false; |
| } |
| if (!m_pCharWidthMap) { |
| m_pCharWidthMap = |
| pdfium::MakeUnique<CFX_DiscreteArrayTemplate<uint16_t>>(1024); |
| } |
| if (!m_pRectArray) |
| m_pRectArray = pdfium::MakeUnique<CFX_MassArrayTemplate<CFX_Rect>>(16); |
| if (!m_pBBoxMap) |
| m_pBBoxMap = pdfium::MakeUnique<CFX_MapPtrToPtr>(16); |
| |
| return true; |
| } |
| |
| CFGAS_GEFont* CFGAS_GEFont::Derive(uint32_t dwFontStyles, uint16_t wCodePage) { |
| if (GetFontStyles() == dwFontStyles) |
| return Retain(); |
| return new CFGAS_GEFont(this, dwFontStyles); |
| } |
| |
| CFX_WideString CFGAS_GEFont::GetFamilyName() const { |
| if (!m_pFont->GetSubstFont() || |
| m_pFont->GetSubstFont()->m_Family.GetLength() == 0) { |
| return CFX_WideString::FromLocal(m_pFont->GetFamilyName().AsStringC()); |
| } |
| return CFX_WideString::FromLocal( |
| m_pFont->GetSubstFont()->m_Family.AsStringC()); |
| } |
| |
| uint32_t CFGAS_GEFont::GetFontStyles() const { |
| ASSERT(m_pFont); |
| #if _FXM_PLATFORM_ != _FXM_PLATFORM_WINDOWS_ |
| if (m_bUseLogFontStyle) |
| return m_dwLogFontStyle; |
| #endif |
| |
| uint32_t dwStyles = 0; |
| auto* pSubstFont = m_pFont->GetSubstFont(); |
| if (pSubstFont) { |
| if (pSubstFont->m_Weight == FXFONT_FW_BOLD) |
| dwStyles |= FX_FONTSTYLE_Bold; |
| if (pSubstFont->m_SubstFlags & FXFONT_SUBST_ITALIC) |
| dwStyles |= FX_FONTSTYLE_Italic; |
| } else { |
| if (m_pFont->IsBold()) |
| dwStyles |= FX_FONTSTYLE_Bold; |
| if (m_pFont->IsItalic()) |
| dwStyles |= FX_FONTSTYLE_Italic; |
| } |
| return dwStyles; |
| } |
| |
| bool CFGAS_GEFont::GetCharWidth(FX_WCHAR wUnicode, |
| int32_t& iWidth, |
| bool bCharCode) { |
| return GetCharWidthInternal(wUnicode, iWidth, true, bCharCode); |
| } |
| |
| bool CFGAS_GEFont::GetCharWidthInternal(FX_WCHAR wUnicode, |
| int32_t& iWidth, |
| bool bRecursive, |
| bool bCharCode) { |
| ASSERT(m_pCharWidthMap); |
| iWidth = m_pCharWidthMap->GetAt(wUnicode, 0); |
| if (iWidth == 65535) |
| return false; |
| |
| if (iWidth > 0) |
| return true; |
| |
| if (!m_pProvider || |
| !m_pProvider->GetCharWidth(this, wUnicode, bCharCode, &iWidth)) { |
| CFGAS_GEFont* pFont = nullptr; |
| int32_t iGlyph = GetGlyphIndex(wUnicode, true, &pFont, bCharCode); |
| if (iGlyph != 0xFFFF && pFont) { |
| if (pFont == this) { |
| iWidth = m_pFont->GetGlyphWidth(iGlyph); |
| if (iWidth < 0) |
| iWidth = -1; |
| } else if (pFont->GetCharWidthInternal(wUnicode, iWidth, false, |
| bCharCode)) { |
| return true; |
| } |
| } else { |
| iWidth = -1; |
| } |
| } |
| m_pCharWidthMap->SetAtGrow(wUnicode, iWidth); |
| return iWidth > 0; |
| } |
| |
| bool CFGAS_GEFont::GetCharBBox(FX_WCHAR wUnicode, |
| CFX_Rect& bbox, |
| bool bCharCode) { |
| return GetCharBBoxInternal(wUnicode, bbox, true, bCharCode); |
| } |
| |
| bool CFGAS_GEFont::GetCharBBoxInternal(FX_WCHAR wUnicode, |
| CFX_Rect& bbox, |
| bool bRecursive, |
| bool bCharCode) { |
| ASSERT(m_pRectArray); |
| ASSERT(m_pBBoxMap); |
| void* pRect = nullptr; |
| if (!m_pBBoxMap->Lookup((void*)(uintptr_t)wUnicode, pRect)) { |
| CFGAS_GEFont* pFont = nullptr; |
| int32_t iGlyph = GetGlyphIndex(wUnicode, true, &pFont, bCharCode); |
| if (iGlyph != 0xFFFF && pFont) { |
| if (pFont == this) { |
| FX_RECT rtBBox; |
| if (m_pFont->GetGlyphBBox(iGlyph, rtBBox)) { |
| CFX_Rect rt; |
| rt.Set(rtBBox.left, rtBBox.top, rtBBox.Width(), rtBBox.Height()); |
| int32_t index = m_pRectArray->Add(rt); |
| pRect = m_pRectArray->GetPtrAt(index); |
| m_pBBoxMap->SetAt((void*)(uintptr_t)wUnicode, pRect); |
| } |
| } else if (pFont->GetCharBBoxInternal(wUnicode, bbox, false, bCharCode)) { |
| return true; |
| } |
| } |
| } |
| if (!pRect) |
| return false; |
| |
| bbox = *static_cast<const CFX_Rect*>(pRect); |
| return true; |
| } |
| |
| bool CFGAS_GEFont::GetBBox(CFX_Rect& bbox) { |
| FX_RECT rt(0, 0, 0, 0); |
| if (!m_pFont->GetBBox(rt)) |
| return false; |
| bbox.left = rt.left; |
| bbox.width = rt.Width(); |
| bbox.top = rt.bottom; |
| bbox.height = -rt.Height(); |
| return true; |
| } |
| |
| int32_t CFGAS_GEFont::GetGlyphIndex(FX_WCHAR wUnicode, bool bCharCode) { |
| return GetGlyphIndex(wUnicode, true, nullptr, bCharCode); |
| } |
| |
| int32_t CFGAS_GEFont::GetGlyphIndex(FX_WCHAR wUnicode, |
| bool bRecursive, |
| CFGAS_GEFont** ppFont, |
| bool bCharCode) { |
| ASSERT(m_pFontEncoding); |
| int32_t iGlyphIndex = m_pFontEncoding->GlyphFromCharCode(wUnicode); |
| if (iGlyphIndex > 0) { |
| if (ppFont) |
| *ppFont = this; |
| return iGlyphIndex; |
| } |
| const FGAS_FONTUSB* pFontUSB = FGAS_GetUnicodeBitField(wUnicode); |
| if (!pFontUSB) |
| return 0xFFFF; |
| |
| uint16_t wBitField = pFontUSB->wBitField; |
| if (wBitField >= 128) |
| return 0xFFFF; |
| |
| auto it = m_FontMapper.find(wUnicode); |
| CFGAS_GEFont* pFont = it != m_FontMapper.end() ? it->second : nullptr; |
| if (pFont && pFont != this) { |
| iGlyphIndex = pFont->GetGlyphIndex(wUnicode, false, nullptr, bCharCode); |
| if (iGlyphIndex != 0xFFFF) { |
| int32_t i = m_SubstFonts.Find(pFont); |
| if (i > -1) { |
| iGlyphIndex |= ((i + 1) << 24); |
| if (ppFont) |
| *ppFont = pFont; |
| return iGlyphIndex; |
| } |
| } |
| } |
| if (!m_pFontMgr || !bRecursive) |
| return 0xFFFF; |
| CFX_WideString wsFamily = GetFamilyName(); |
| pFont = |
| m_pFontMgr->GetFontByUnicode(wUnicode, GetFontStyles(), wsFamily.c_str()); |
| #if _FXM_PLATFORM_ != _FXM_PLATFORM_WINDOWS_ |
| if (!pFont) |
| pFont = m_pFontMgr->GetFontByUnicode(wUnicode, GetFontStyles(), nullptr); |
| #endif |
| if (!pFont) |
| return 0xFFFF; |
| if (pFont == this) { |
| pFont->Release(); |
| return 0xFFFF; |
| } |
| m_FontMapper[wUnicode] = pFont; |
| int32_t i = m_SubstFonts.GetSize(); |
| m_SubstFonts.Add(pFont); |
| iGlyphIndex = pFont->GetGlyphIndex(wUnicode, false, nullptr, bCharCode); |
| if (iGlyphIndex == 0xFFFF) |
| return 0xFFFF; |
| iGlyphIndex |= ((i + 1) << 24); |
| if (ppFont) |
| *ppFont = pFont; |
| return iGlyphIndex; |
| } |
| |
| int32_t CFGAS_GEFont::GetAscent() const { |
| return m_pFont->GetAscent(); |
| } |
| |
| int32_t CFGAS_GEFont::GetDescent() const { |
| return m_pFont->GetDescent(); |
| } |
| |
| CFGAS_GEFont* CFGAS_GEFont::GetSubstFont(int32_t iGlyphIndex) const { |
| iGlyphIndex = static_cast<uint32_t>(iGlyphIndex) >> 24; |
| return iGlyphIndex == 0 ? const_cast<CFGAS_GEFont*>(this) |
| : m_SubstFonts[iGlyphIndex - 1]; |
| } |
