Move CFX_Font definition to its own file and clean up

- Rename fx_ge_font.cpp to cfx_font.cpp
- Deleted unused CONTRAST_RAMP_STEP in fx_ge_text.cpp
- Move CFX_Font definitions and auxiliary methods in fx_ge_text to cfx_font
- Remove extern "C", static, and underscore prefixes in new namespace
methods in cfx_font.cpp

Review-Url: https://codereview.chromium.org/2304493005

1 files changed, 0 insertions, 416 deletions

diff --git a/core/fxge/ge/fx_ge_font.cpp b/core/fxge/ge/fx_ge_font.cpp
deleted file mode 100644
index cb86429ef6..0000000000
--- a/core/fxge/ge/fx_ge_font.cpp
+++ /dev/null
@@ -1,416 +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 "core/fxge/include/fx_font.h"
-
-#include "core/fpdfapi/fpdf_font/include/cpdf_font.h"
-#include "core/fxge/ge/fx_text_int.h"
-#include "core/fxge/include/cfx_fontmgr.h"
-#include "core/fxge/include/cfx_gemodule.h"
-#include "core/fxge/include/cfx_substfont.h"
-#include "core/fxge/include/fx_freetype.h"
-
-#define EM_ADJUST(em, a) (em == 0 ? (a) : (a)*1000 / em)
-
-namespace {
-
-#ifdef PDF_ENABLE_XFA
-
-unsigned long FTStreamRead(FXFT_Stream stream,
-                           unsigned long offset,
-                           unsigned char* buffer,
-                           unsigned long count) {
-  if (count == 0)
-    return 0;
-
-  IFX_FileRead* pFile = static_cast<IFX_FileRead*>(stream->descriptor.pointer);
-  return pFile->ReadBlock(buffer, offset, count) ? count : 0;
-}
-
-void FTStreamClose(FXFT_Stream stream) {}
-
-FX_BOOL LoadFileImp(FXFT_Library library,
-                    FXFT_Face* Face,
-                    IFX_FileRead* pFile,
-                    int32_t faceIndex,
-                    std::unique_ptr<FXFT_StreamRec>* stream) {
-  std::unique_ptr<FXFT_StreamRec> stream1(new FXFT_StreamRec());
-  stream1->base = nullptr;
-  stream1->size = static_cast<unsigned long>(pFile->GetSize());
-  stream1->pos = 0;
-  stream1->descriptor.pointer = pFile;
-  stream1->close = FTStreamClose;
-  stream1->read = FTStreamRead;
-  FXFT_Open_Args args;
-  args.flags = FT_OPEN_STREAM;
-  args.stream = stream1.get();
-  if (FXFT_Open_Face(library, &args, faceIndex, Face))
-    return FALSE;
-  if (stream)
-    *stream = std::move(stream1);
-  return TRUE;
-}
-#endif  // PDF_ENABLE_XFA
-
-FXFT_Face FT_LoadFont(const uint8_t* pData, int size) {
-  return CFX_GEModule::Get()->GetFontMgr()->GetFixedFace(pData, size, 0);
-}
-
-}  // namespace
-
-CFX_Font::CFX_Font()
-#ifdef PDF_ENABLE_XFA
-    : m_bLogic(FALSE),
-      m_pOwnedStream(nullptr),
-      m_Face(nullptr),
-#else
-    : m_Face(nullptr),
-#endif  // PDF_ENABLE_XFA
-      m_pFontData(nullptr),
-      m_pGsubData(nullptr),
-      m_dwSize(0),
-#if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
-      m_pPlatformFont(nullptr),
-#endif
-      m_bEmbedded(FALSE),
-      m_bVertical(FALSE) {
-}
-
-#ifdef PDF_ENABLE_XFA
-FX_BOOL CFX_Font::LoadClone(const CFX_Font* pFont) {
-  if (!pFont)
-    return FALSE;
-
-  m_bLogic = TRUE;
-  if (pFont->m_pSubstFont) {
-    m_pSubstFont.reset(new CFX_SubstFont);
-    m_pSubstFont->m_Charset = pFont->m_pSubstFont->m_Charset;
-    m_pSubstFont->m_SubstFlags = pFont->m_pSubstFont->m_SubstFlags;
-    m_pSubstFont->m_Weight = pFont->m_pSubstFont->m_Weight;
-    m_pSubstFont->m_Family = pFont->m_pSubstFont->m_Family;
-    m_pSubstFont->m_ItalicAngle = pFont->m_pSubstFont->m_ItalicAngle;
-  }
-  if (pFont->m_OtfFontData.GetSize()) {
-    m_OtfFontData.AttachData(pFont->m_OtfFontData.GetBuffer(),
-                             pFont->m_OtfFontData.GetSize());
-  }
-  m_Face = pFont->m_Face;
-  m_bEmbedded = pFont->m_bEmbedded;
-  m_bVertical = pFont->m_bVertical;
-  m_dwSize = pFont->m_dwSize;
-  m_pFontData = pFont->m_pFontData;
-  m_pGsubData = pFont->m_pGsubData;
-#if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
-  m_pPlatformFont = pFont->m_pPlatformFont;
-#endif
-  m_pOwnedStream = pFont->m_pOwnedStream;
-  return TRUE;
-}
-#endif  // PDF_ENABLE_XFA
-
-CFX_Font::~CFX_Font() {
-#ifdef PDF_ENABLE_XFA
-  if (m_bLogic) {
-    m_OtfFontData.DetachBuffer();
-    return;
-  }
-#endif  // PDF_ENABLE_XFA
-  if (m_Face) {
-#ifndef PDF_ENABLE_XFA
-    if (FXFT_Get_Face_External_Stream(m_Face)) {
-      FXFT_Clear_Face_External_Stream(m_Face);
-    }
-#endif  // PDF_ENABLE_XFA
-    if (m_bEmbedded) {
-      DeleteFace();
-    } else {
-      CFX_GEModule::Get()->GetFontMgr()->ReleaseFace(m_Face);
-    }
-  }
-#ifdef PDF_ENABLE_XFA
-  FX_Free(m_pOwnedStream);
-#endif  // PDF_ENABLE_XFA
-  FX_Free(m_pGsubData);
-#if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ && !defined _SKIA_SUPPORT_
-  ReleasePlatformResource();
-#endif
-}
-
-void CFX_Font::DeleteFace() {
-  FXFT_Done_Face(m_Face);
-  m_Face = nullptr;
-}
-
-void CFX_Font::LoadSubst(const CFX_ByteString& face_name,
-                         FX_BOOL bTrueType,
-                         uint32_t flags,
-                         int weight,
-                         int italic_angle,
-                         int CharsetCP,
-                         FX_BOOL bVertical) {
-  m_bEmbedded = FALSE;
-  m_bVertical = bVertical;
-  m_pSubstFont.reset(new CFX_SubstFont);
-  m_Face = CFX_GEModule::Get()->GetFontMgr()->FindSubstFont(
-      face_name, bTrueType, flags, weight, italic_angle, CharsetCP,
-      m_pSubstFont.get());
-  if (m_Face) {
-    m_pFontData = FXFT_Get_Face_Stream_Base(m_Face);
-    m_dwSize = FXFT_Get_Face_Stream_Size(m_Face);
-  }
-}
-
-#ifdef PDF_ENABLE_XFA
-FX_BOOL CFX_Font::LoadFile(IFX_FileRead* pFile,
-                           int nFaceIndex,
-                           int* pFaceCount) {
-  m_bEmbedded = FALSE;
-
-  CFX_FontMgr* pFontMgr = CFX_GEModule::Get()->GetFontMgr();
-  pFontMgr->InitFTLibrary();
-  FXFT_Library library = pFontMgr->GetFTLibrary();
-
-  std::unique_ptr<FXFT_StreamRec> stream;
-  if (!LoadFileImp(library, &m_Face, pFile, nFaceIndex, &stream))
-    return FALSE;
-
-  if (pFaceCount)
-    *pFaceCount = (int)m_Face->num_faces;
-  m_pOwnedStream = stream.release();
-  FXFT_Set_Pixel_Sizes(m_Face, 0, 64);
-  return TRUE;
-}
-#endif  // PDF_ENABLE_XFA
-
-int CFX_Font::GetGlyphWidth(uint32_t glyph_index) {
-  if (!m_Face) {
-    return 0;
-  }
-  if (m_pSubstFont && (m_pSubstFont->m_SubstFlags & FXFONT_SUBST_MM)) {
-    AdjustMMParams(glyph_index, 0, 0);
-  }
-  int err = FXFT_Load_Glyph(
-      m_Face, glyph_index,
-      FXFT_LOAD_NO_SCALE | FXFT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH);
-  if (err) {
-    return 0;
-  }
-  int width = EM_ADJUST(FXFT_Get_Face_UnitsPerEM(m_Face),
-                        FXFT_Get_Glyph_HoriAdvance(m_Face));
-  return width;
-}
-
-FX_BOOL CFX_Font::LoadEmbedded(const uint8_t* data, uint32_t size) {
-  std::vector<uint8_t> temp(data, data + size);
-  m_pFontDataAllocation.swap(temp);
-  m_Face = FT_LoadFont(m_pFontDataAllocation.data(), size);
-  m_pFontData = m_pFontDataAllocation.data();
-  m_bEmbedded = TRUE;
-  m_dwSize = size;
-  return !!m_Face;
-}
-
-FX_BOOL CFX_Font::IsTTFont() const {
-  if (!m_Face)
-    return FALSE;
-  return FXFT_Is_Face_TT_OT(m_Face) == FXFT_FACE_FLAG_SFNT;
-}
-
-int CFX_Font::GetAscent() const {
-  if (!m_Face)
-    return 0;
-  return EM_ADJUST(FXFT_Get_Face_UnitsPerEM(m_Face),
-                   FXFT_Get_Face_Ascender(m_Face));
-}
-
-int CFX_Font::GetDescent() const {
-  if (!m_Face)
-    return 0;
-  return EM_ADJUST(FXFT_Get_Face_UnitsPerEM(m_Face),
-                   FXFT_Get_Face_Descender(m_Face));
-}
-
-FX_BOOL CFX_Font::GetGlyphBBox(uint32_t glyph_index, FX_RECT& bbox) {
-  if (!m_Face)
-    return FALSE;
-
-  if (FXFT_Is_Face_Tricky(m_Face)) {
-    int error = FXFT_Set_Char_Size(m_Face, 0, 1000 * 64, 72, 72);
-    if (error) {
-      return FALSE;
-    }
-    error = FXFT_Load_Glyph(m_Face, glyph_index,
-                            FXFT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH);
-    if (error) {
-      return FALSE;
-    }
-    FXFT_BBox cbox;
-    FT_Glyph glyph;
-    error = FXFT_Get_Glyph(((FXFT_Face)m_Face)->glyph, &glyph);
-    if (error) {
-      return FALSE;
-    }
-    FXFT_Glyph_Get_CBox(glyph, FXFT_GLYPH_BBOX_PIXELS, &cbox);
-    int pixel_size_x = ((FXFT_Face)m_Face)->size->metrics.x_ppem,
-        pixel_size_y = ((FXFT_Face)m_Face)->size->metrics.y_ppem;
-    if (pixel_size_x == 0 || pixel_size_y == 0) {
-      bbox.left = cbox.xMin;
-      bbox.right = cbox.xMax;
-      bbox.top = cbox.yMax;
-      bbox.bottom = cbox.yMin;
-    } else {
-      bbox.left = cbox.xMin * 1000 / pixel_size_x;
-      bbox.right = cbox.xMax * 1000 / pixel_size_x;
-      bbox.top = cbox.yMax * 1000 / pixel_size_y;
-      bbox.bottom = cbox.yMin * 1000 / pixel_size_y;
-    }
-    if (bbox.top > FXFT_Get_Face_Ascender(m_Face)) {
-      bbox.top = FXFT_Get_Face_Ascender(m_Face);
-    }
-    if (bbox.bottom < FXFT_Get_Face_Descender(m_Face)) {
-      bbox.bottom = FXFT_Get_Face_Descender(m_Face);
-    }
-    FT_Done_Glyph(glyph);
-    return FXFT_Set_Pixel_Sizes(m_Face, 0, 64) == 0;
-  }
-  if (FXFT_Load_Glyph(
-          m_Face, glyph_index,
-          FXFT_LOAD_NO_SCALE | FXFT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH)) {
-    return FALSE;
-  }
-  int em = FXFT_Get_Face_UnitsPerEM(m_Face);
-  if (em == 0) {
-    bbox.left = FXFT_Get_Glyph_HoriBearingX(m_Face);
-    bbox.bottom = FXFT_Get_Glyph_HoriBearingY(m_Face);
-    bbox.top = bbox.bottom - FXFT_Get_Glyph_Height(m_Face);
-    bbox.right = bbox.left + FXFT_Get_Glyph_Width(m_Face);
-  } else {
-    bbox.left = FXFT_Get_Glyph_HoriBearingX(m_Face) * 1000 / em;
-    bbox.top =
-        (FXFT_Get_Glyph_HoriBearingY(m_Face) - FXFT_Get_Glyph_Height(m_Face)) *
-        1000 / em;
-    bbox.right =
-        (FXFT_Get_Glyph_HoriBearingX(m_Face) + FXFT_Get_Glyph_Width(m_Face)) *
-        1000 / em;
-    bbox.bottom = (FXFT_Get_Glyph_HoriBearingY(m_Face)) * 1000 / em;
-  }
-  return TRUE;
-}
-
-FX_BOOL CFX_Font::IsItalic() const {
-  if (!m_Face)
-    return FALSE;
-
-  FX_BOOL ret = FXFT_Is_Face_Italic(m_Face) == FXFT_STYLE_FLAG_ITALIC;
-  if (!ret) {
-    CFX_ByteString str(FXFT_Get_Face_Style_Name(m_Face));
-    str.MakeLower();
-    if (str.Find("italic") != -1) {
-      ret = TRUE;
-    }
-  }
-  return ret;
-}
-
-FX_BOOL CFX_Font::IsBold() const {
-  if (!m_Face)
-    return FALSE;
-  return FXFT_Is_Face_Bold(m_Face) == FXFT_STYLE_FLAG_BOLD;
-}
-
-FX_BOOL CFX_Font::IsFixedWidth() const {
-  if (!m_Face)
-    return FALSE;
-  return FXFT_Is_Face_fixedwidth(m_Face);
-}
-
-CFX_ByteString CFX_Font::GetPsName() const {
-  if (!m_Face)
-    return CFX_ByteString();
-
-  CFX_ByteString psName = FXFT_Get_Postscript_Name(m_Face);
-  if (psName.IsEmpty())
-    psName = "Untitled";
-  return psName;
-}
-
-CFX_ByteString CFX_Font::GetFamilyName() const {
-  if (!m_Face && !m_pSubstFont) {
-    return CFX_ByteString();
-  }
-  if (m_Face) {
-    return CFX_ByteString(FXFT_Get_Face_Family_Name(m_Face));
-  }
-  return m_pSubstFont->m_Family;
-}
-CFX_ByteString CFX_Font::GetFaceName() const {
-  if (!m_Face && !m_pSubstFont) {
-    return CFX_ByteString();
-  }
-  if (m_Face) {
-    CFX_ByteString facename;
-    CFX_ByteString style = CFX_ByteString(FXFT_Get_Face_Style_Name(m_Face));
-    facename = GetFamilyName();
-    if (facename.IsEmpty()) {
-      facename = "Untitled";
-    }
-    if (!style.IsEmpty() && style != "Regular") {
-      facename += " " + style;
-    }
-    return facename;
-  }
-  return m_pSubstFont->m_Family;
-}
-FX_BOOL CFX_Font::GetBBox(FX_RECT& bbox) {
-  if (!m_Face) {
-    return FALSE;
-  }
-  int em = FXFT_Get_Face_UnitsPerEM(m_Face);
-  if (em == 0) {
-    bbox.left = FXFT_Get_Face_xMin(m_Face);
-    bbox.bottom = FXFT_Get_Face_yMax(m_Face);
-    bbox.top = FXFT_Get_Face_yMin(m_Face);
-    bbox.right = FXFT_Get_Face_xMax(m_Face);
-  } else {
-    bbox.left = FXFT_Get_Face_xMin(m_Face) * 1000 / em;
-    bbox.top = FXFT_Get_Face_yMin(m_Face) * 1000 / em;
-    bbox.right = FXFT_Get_Face_xMax(m_Face) * 1000 / em;
-    bbox.bottom = FXFT_Get_Face_yMax(m_Face) * 1000 / em;
-  }
-  return TRUE;
-}
-
-int CFX_Font::GetHeight() const {
-  if (!m_Face)
-    return 0;
-
-  return EM_ADJUST(FXFT_Get_Face_UnitsPerEM(m_Face),
-                   FXFT_Get_Face_Height(m_Face));
-}
-
-int CFX_Font::GetMaxAdvanceWidth() const {
-  if (!m_Face)
-    return 0;
-
-  return EM_ADJUST(FXFT_Get_Face_UnitsPerEM(m_Face),
-                   FXFT_Get_Face_MaxAdvanceWidth(m_Face));
-}
-
-int CFX_Font::GetULPos() const {
-  if (!m_Face)
-    return 0;
-
-  return EM_ADJUST(FXFT_Get_Face_UnitsPerEM(m_Face),
-                   FXFT_Get_Face_UnderLinePosition(m_Face));
-}
-
-int CFX_Font::GetULthickness() const {
-  if (!m_Face)
-    return 0;
-
-  return EM_ADJUST(FXFT_Get_Face_UnitsPerEM(m_Face),
-                   FXFT_Get_Face_UnderLineThickness(m_Face));
-}