font_renamer.cpp

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// Copyright 2022 The PDFium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
 
#include "testing/font_renamer.h"
 
#include <string>
 
#include "testing/test_fonts.h"
 
namespace {
 
FPDF_SYSFONTINFO* GetImpl(FPDF_SYSFONTINFO* info) {
  return static_cast<FontRenamer*>(info)->impl();
}
 
void ReleaseImpl(FPDF_SYSFONTINFO* info) {
  FPDF_SYSFONTINFO* impl = GetImpl(info);
  impl->Release(impl);
}
 
void EnumFontsImpl(FPDF_SYSFONTINFO* info, void* mapper) {
  FPDF_SYSFONTINFO* impl = GetImpl(info);
  impl->EnumFonts(impl, mapper);
}
 
void* MapFontImpl(FPDF_SYSFONTINFO* info,
                  int weight,
                  FPDF_BOOL italic,
                  int charset,
                  int pitch_family,
                  const char* face,
                  FPDF_BOOL* exact) {
  std::string renamed_face = TestFonts::RenameFont(face);
  FPDF_SYSFONTINFO* impl = GetImpl(info);
  return impl->MapFont(impl, weight, italic, charset, pitch_family,
                       renamed_face.c_str(), exact);
}
 
void* GetFontImpl(FPDF_SYSFONTINFO* info, const char* face) {
  // Any non-null return will do.
  FPDF_SYSFONTINFO* impl = GetImpl(info);
  std::string renamed_face = TestFonts::RenameFont(face);
  return impl->GetFont(impl, renamed_face.c_str());
}
 
unsigned long GetFontDataImpl(FPDF_SYSFONTINFO* info,
                              void* font,
                              unsigned int table,
                              unsigned char* buffer,
                              unsigned long buf_size) {
  FPDF_SYSFONTINFO* impl = GetImpl(info);
  return impl->GetFontData(impl, font, table, buffer, buf_size);
}
 
unsigned long GetFaceNameImpl(FPDF_SYSFONTINFO* info,
                              void* font,
                              char* buffer,
                              unsigned long buf_size) {
  FPDF_SYSFONTINFO* impl = GetImpl(info);
  return impl->GetFaceName(impl, font, buffer, buf_size);
}
 
int GetFontCharsetImpl(FPDF_SYSFONTINFO* info, void* font) {
  FPDF_SYSFONTINFO* impl = GetImpl(info);
  return impl->GetFontCharset(impl, font);
}
 
void DeleteFontImpl(FPDF_SYSFONTINFO* info, void* font) {
  FPDF_SYSFONTINFO* impl = GetImpl(info);
  impl->DeleteFont(impl, font);
}
 
}  // namespace
 
FontRenamer::FontRenamer() : impl_(FPDF_GetDefaultSystemFontInfo()) {
  version = 1;
  Release = ReleaseImpl;
  EnumFonts = EnumFontsImpl;
  MapFont = MapFontImpl;
  GetFont = GetFontImpl;
  GetFontData = GetFontDataImpl;
  GetFaceName = GetFaceNameImpl;
  GetFontCharset = GetFontCharsetImpl;
  DeleteFont = DeleteFontImpl;
  FPDF_SetSystemFontInfo(this);
}
 
FontRenamer::~FontRenamer() {
  FPDF_FreeDefaultSystemFontInfo(impl_.ExtractAsDangling());
}