Clean up CFGAS_GEFont

xfa/fgas/font/fgas_gefont.cpp

Index: xfa/fgas/font/fgas_gefont.cpp
diff --git a/xfa/fgas/font/fgas_gefont.cpp b/xfa/fgas/font/fgas_gefont.cpp
deleted file mode 100644
index 7fa352c23c1a7838f6adb1e38bcc50e1b94b0f39..0000000000000000000000000000000000000000
--- a/xfa/fgas/font/fgas_gefont.cpp
+++ /dev/null
@@ -1,489 +0,0 @@
-// 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/fgas_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 "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(FX_CreateFileRead(pFontStream, false));
-  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.reset(new CFX_DiscreteArrayTemplate<uint16_t>(1024));
-  if (!m_pRectArray)
-    m_pRectArray.reset(new CFX_MassArrayTemplate<CFX_Rect>(16));
-  if (!m_pBBoxMap)
-    m_pBBoxMap.reset(new 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);
-}
-
-void CFGAS_GEFont::GetFamilyName(CFX_WideString& wsFamily) const {
-  if (!m_pFont->GetSubstFont() ||
-      m_pFont->GetSubstFont()->m_Family.GetLength() == 0) {
-    wsFamily = CFX_WideString::FromLocal(m_pFont->GetFamilyName().AsStringC());
-  } else {
-    wsFamily = 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);
-  bool bRet = m_pFont->GetBBox(rt);
-  if (bRet) {
-    bbox.left = rt.left;
-    bbox.width = rt.Width();
-    bbox.top = rt.bottom;
-    bbox.height = -rt.Height();
-  }
-  return bRet;
-}
-int32_t CFGAS_GEFont::GetItalicAngle() const {
-  if (!m_pFont->GetSubstFont()) {
-    return 0;
-  }
-  return m_pFont->GetSubstFont()->m_ItalicAngle;
-}
-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) {
-    CFX_WideString wsFamily;
-    GetFamilyName(wsFamily);
-    CFGAS_GEFont* 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) {
-      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) {
-        iGlyphIndex |= ((i + 1) << 24);
-        if (ppFont)
-          *ppFont = pFont;
-        return iGlyphIndex;
-      }
-    }
-  }
-  return 0xFFFF;
-}
-int32_t CFGAS_GEFont::GetAscent() const {
-  return m_pFont->GetAscent();
-}
-int32_t CFGAS_GEFont::GetDescent() const {
-  return m_pFont->GetDescent();
-}
-void CFGAS_GEFont::Reset() {
-  for (int32_t i = 0; i < m_SubstFonts.GetSize(); i++)
-    m_SubstFonts[i]->Reset();
-  if (m_pCharWidthMap) {
-    m_pCharWidthMap->RemoveAll();
-  }
-  if (m_pBBoxMap) {
-    m_pBBoxMap->RemoveAll();
-  }
-  if (m_pRectArray) {
-    m_pRectArray->RemoveAll(false);
-  }
-}
-CFGAS_GEFont* CFGAS_GEFont::GetSubstFont(int32_t iGlyphIndex) const {
-  iGlyphIndex = ((uint32_t)iGlyphIndex) >> 24;
-  return iGlyphIndex == 0 ? const_cast<CFGAS_GEFont*>(this)
-                          : m_SubstFonts[iGlyphIndex - 1];
-}