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// 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 "public/fpdf_sysfontinfo.h"
#include <memory>
#include "core/fxcrt/fx_codepage.h"
#include "core/fxge/cfx_font.h"
#include "core/fxge/cfx_fontmapper.h"
#include "core/fxge/cfx_fontmgr.h"
#include "core/fxge/cfx_gemodule.h"
#include "core/fxge/fx_font.h"
#include "core/fxge/systemfontinfo_iface.h"
#include "fpdfsdk/cpdfsdk_helpers.h"
#include "fpdfsdk/pwl/cpwl_font_map.h"
#include "third_party/base/ptr_util.h"
static_assert(FXFONT_ANSI_CHARSET == FX_CHARSET_ANSI, "Charset must match");
static_assert(FXFONT_DEFAULT_CHARSET == FX_CHARSET_Default,
"Charset must match");
static_assert(FXFONT_SYMBOL_CHARSET == FX_CHARSET_Symbol, "Charset must match");
static_assert(FXFONT_SHIFTJIS_CHARSET == FX_CHARSET_ShiftJIS,
"Charset must match");
static_assert(FXFONT_HANGEUL_CHARSET == FX_CHARSET_Hangul,
"Charset must match");
static_assert(FXFONT_GB2312_CHARSET == FX_CHARSET_ChineseSimplified,
"Charset must match");
static_assert(FXFONT_CHINESEBIG5_CHARSET == FX_CHARSET_ChineseTraditional,
"Charset must match");
static_assert(sizeof(CFX_Font::CharsetFontMap) == sizeof(FPDF_CharsetFontMap),
"CFX_Font::CharsetFontMap should be same as FPDF_CharsetFontMap");
class CFX_ExternalFontInfo final : public SystemFontInfoIface {
public:
explicit CFX_ExternalFontInfo(FPDF_SYSFONTINFO* pInfo) : m_pInfo(pInfo) {}
~CFX_ExternalFontInfo() override {
if (m_pInfo->Release)
m_pInfo->Release(m_pInfo);
}
bool EnumFontList(CFX_FontMapper* pMapper) override {
if (m_pInfo->EnumFonts) {
m_pInfo->EnumFonts(m_pInfo, pMapper);
return true;
}
return false;
}
void* MapFont(int weight,
bool bItalic,
int charset,
int pitch_family,
const char* family) override {
if (!m_pInfo->MapFont)
return nullptr;
int iExact;
return m_pInfo->MapFont(m_pInfo, weight, bItalic, charset, pitch_family,
family, &iExact);
}
void* GetFont(const char* family) override {
if (!m_pInfo->GetFont)
return nullptr;
return m_pInfo->GetFont(m_pInfo, family);
}
uint32_t GetFontData(void* hFont,
uint32_t table,
uint8_t* buffer,
uint32_t size) override {
if (!m_pInfo->GetFontData)
return 0;
return m_pInfo->GetFontData(m_pInfo, hFont, table, buffer, size);
}
bool GetFaceName(void* hFont, ByteString* name) override {
if (!m_pInfo->GetFaceName)
return false;
uint32_t size = m_pInfo->GetFaceName(m_pInfo, hFont, nullptr, 0);
if (size == 0)
return false;
char* buffer = FX_Alloc(char, size);
size = m_pInfo->GetFaceName(m_pInfo, hFont, buffer, size);
*name = ByteString(buffer, size);
FX_Free(buffer);
return true;
}
bool GetFontCharset(void* hFont, int* charset) override {
if (!m_pInfo->GetFontCharset)
return false;
*charset = m_pInfo->GetFontCharset(m_pInfo, hFont);
return true;
}
void DeleteFont(void* hFont) override {
if (m_pInfo->DeleteFont)
m_pInfo->DeleteFont(m_pInfo, hFont);
}
private:
FPDF_SYSFONTINFO* const m_pInfo;
};
FPDF_EXPORT void FPDF_CALLCONV FPDF_AddInstalledFont(void* mapper,
const char* name,
int charset) {
CFX_FontMapper* pMapper = static_cast<CFX_FontMapper*>(mapper);
pMapper->AddInstalledFont(name, charset);
}
FPDF_EXPORT void FPDF_CALLCONV
FPDF_SetSystemFontInfo(FPDF_SYSFONTINFO* pFontInfoExt) {
if (pFontInfoExt->version != 1)
return;
CFX_GEModule::Get()->GetFontMgr()->SetSystemFontInfo(
pdfium::MakeUnique<CFX_ExternalFontInfo>(pFontInfoExt));
}
FPDF_EXPORT const FPDF_CharsetFontMap* FPDF_CALLCONV FPDF_GetDefaultTTFMap() {
return reinterpret_cast<const FPDF_CharsetFontMap*>(CFX_Font::defaultTTFMap);
}
struct FPDF_SYSFONTINFO_DEFAULT : public FPDF_SYSFONTINFO {
UnownedPtr<SystemFontInfoIface> m_pFontInfo;
};
static void DefaultRelease(struct _FPDF_SYSFONTINFO* pThis) {
auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis);
delete pDefault->m_pFontInfo.Release();
}
static void DefaultEnumFonts(struct _FPDF_SYSFONTINFO* pThis, void* pMapper) {
auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis);
pDefault->m_pFontInfo->EnumFontList(static_cast<CFX_FontMapper*>(pMapper));
}
static void* DefaultMapFont(struct _FPDF_SYSFONTINFO* pThis,
int weight,
int bItalic,
int charset,
int pitch_family,
const char* family,
int* bExact) {
auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis);
return pDefault->m_pFontInfo->MapFont(weight, !!bItalic, charset,
pitch_family, family);
}
void* DefaultGetFont(struct _FPDF_SYSFONTINFO* pThis, const char* family) {
auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis);
return pDefault->m_pFontInfo->GetFont(family);
}
static unsigned long DefaultGetFontData(struct _FPDF_SYSFONTINFO* pThis,
void* hFont,
unsigned int table,
unsigned char* buffer,
unsigned long buf_size) {
auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis);
return pDefault->m_pFontInfo->GetFontData(hFont, table, buffer, buf_size);
}
static unsigned long DefaultGetFaceName(struct _FPDF_SYSFONTINFO* pThis,
void* hFont,
char* buffer,
unsigned long buf_size) {
ByteString name;
auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis);
if (!pDefault->m_pFontInfo->GetFaceName(hFont, &name))
return 0;
if (name.GetLength() >= static_cast<size_t>(buf_size))
return name.GetLength() + 1;
strncpy(buffer, name.c_str(),
(name.GetLength() + 1) * sizeof(ByteString::CharType));
return name.GetLength() + 1;
}
static int DefaultGetFontCharset(struct _FPDF_SYSFONTINFO* pThis, void* hFont) {
int charset;
auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis);
if (!pDefault->m_pFontInfo->GetFontCharset(hFont, &charset))
return 0;
return charset;
}
static void DefaultDeleteFont(struct _FPDF_SYSFONTINFO* pThis, void* hFont) {
auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis);
pDefault->m_pFontInfo->DeleteFont(hFont);
}
FPDF_EXPORT FPDF_SYSFONTINFO* FPDF_CALLCONV FPDF_GetDefaultSystemFontInfo() {
std::unique_ptr<SystemFontInfoIface> pFontInfo =
SystemFontInfoIface::CreateDefault(nullptr);
if (!pFontInfo)
return nullptr;
FPDF_SYSFONTINFO_DEFAULT* pFontInfoExt =
FX_Alloc(FPDF_SYSFONTINFO_DEFAULT, 1);
pFontInfoExt->DeleteFont = DefaultDeleteFont;
pFontInfoExt->EnumFonts = DefaultEnumFonts;
pFontInfoExt->GetFaceName = DefaultGetFaceName;
pFontInfoExt->GetFont = DefaultGetFont;
pFontInfoExt->GetFontCharset = DefaultGetFontCharset;
pFontInfoExt->GetFontData = DefaultGetFontData;
pFontInfoExt->MapFont = DefaultMapFont;
pFontInfoExt->Release = DefaultRelease;
pFontInfoExt->version = 1;
pFontInfoExt->m_pFontInfo = pFontInfo.release();
return pFontInfoExt;
}
FPDF_EXPORT void FPDF_CALLCONV
FPDF_FreeDefaultSystemFontInfo(FPDF_SYSFONTINFO* pDefaultFontInfo) {
FX_Free(static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pDefaultFontInfo));
}
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