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/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkTypes.h"
#if defined(SK_BUILD_FOR_WIN32)
#include "SkDWrite.h"
#include "SkHRESULT.h"
#include "SkOnce.h"
#include "SkString.h"
#include <dwrite.h>
static IDWriteFactory* gDWriteFactory = nullptr;
static void release_dwrite_factory() {
if (gDWriteFactory) {
gDWriteFactory->Release();
}
}
static void create_dwrite_factory(IDWriteFactory** factory) {
typedef decltype(DWriteCreateFactory)* DWriteCreateFactoryProc;
DWriteCreateFactoryProc dWriteCreateFactoryProc = reinterpret_cast<DWriteCreateFactoryProc>(
GetProcAddress(LoadLibraryW(L"dwrite.dll"), "DWriteCreateFactory"));
if (!dWriteCreateFactoryProc) {
HRESULT hr = HRESULT_FROM_WIN32(GetLastError());
if (!IS_ERROR(hr)) {
hr = ERROR_PROC_NOT_FOUND;
}
HRVM(hr, "Could not get DWriteCreateFactory proc.");
}
HRVM(dWriteCreateFactoryProc(DWRITE_FACTORY_TYPE_SHARED,
__uuidof(IDWriteFactory),
reinterpret_cast<IUnknown**>(factory)),
"Could not create DirectWrite factory.");
atexit(release_dwrite_factory);
}
IDWriteFactory* sk_get_dwrite_factory() {
static SkOnce once;
once(create_dwrite_factory, &gDWriteFactory);
return gDWriteFactory;
}
////////////////////////////////////////////////////////////////////////////////
// String conversion
/** Converts a utf8 string to a WCHAR string. */
HRESULT sk_cstring_to_wchar(const char* skname, SkSMallocWCHAR* name) {
int wlen = MultiByteToWideChar(CP_UTF8, 0, skname, -1, nullptr, 0);
if (0 == wlen) {
HRM(HRESULT_FROM_WIN32(GetLastError()),
"Could not get length for wchar to utf-8 conversion.");
}
name->reset(wlen);
wlen = MultiByteToWideChar(CP_UTF8, 0, skname, -1, name->get(), wlen);
if (0 == wlen) {
HRM(HRESULT_FROM_WIN32(GetLastError()), "Could not convert wchar to utf-8.");
}
return S_OK;
}
/** Converts a WCHAR string to a utf8 string. */
HRESULT sk_wchar_to_skstring(WCHAR* name, int nameLen, SkString* skname) {
int len = WideCharToMultiByte(CP_UTF8, 0, name, nameLen, nullptr, 0, nullptr, nullptr);
if (0 == len) {
if (nameLen <= 0) {
skname->reset();
return S_OK;
}
HRM(HRESULT_FROM_WIN32(GetLastError()),
"Could not get length for utf-8 to wchar conversion.");
}
skname->resize(len);
len = WideCharToMultiByte(CP_UTF8, 0, name, nameLen, skname->writable_str(), len, nullptr, nullptr);
if (0 == len) {
HRM(HRESULT_FROM_WIN32(GetLastError()), "Could not convert utf-8 to wchar.");
}
return S_OK;
}
////////////////////////////////////////////////////////////////////////////////
// Locale
void sk_get_locale_string(IDWriteLocalizedStrings* names, const WCHAR* preferedLocale,
SkString* skname) {
UINT32 nameIndex = 0;
if (preferedLocale) {
// Ignore any errors and continue with index 0 if there is a problem.
BOOL nameExists;
names->FindLocaleName(preferedLocale, &nameIndex, &nameExists);
if (!nameExists) {
nameIndex = 0;
}
}
UINT32 nameLen;
HRVM(names->GetStringLength(nameIndex, &nameLen), "Could not get name length.");
SkSMallocWCHAR name(nameLen+1);
HRVM(names->GetString(nameIndex, name.get(), nameLen+1), "Could not get string.");
HRV(sk_wchar_to_skstring(name.get(), nameLen, skname));
}
HRESULT SkGetGetUserDefaultLocaleNameProc(SkGetUserDefaultLocaleNameProc* proc) {
*proc = reinterpret_cast<SkGetUserDefaultLocaleNameProc>(
GetProcAddress(LoadLibraryW(L"Kernel32.dll"), "GetUserDefaultLocaleName")
);
if (!*proc) {
HRESULT hr = HRESULT_FROM_WIN32(GetLastError());
if (!IS_ERROR(hr)) {
hr = ERROR_PROC_NOT_FOUND;
}
return hr;
}
return S_OK;
}
#endif//defined(SK_BUILD_FOR_WIN32)
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