1 /*
2 * Copyright 2014 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7 #include "include/core/SkTypes.h"
8 #if defined(SK_BUILD_FOR_WIN)
9
10 #include "include/core/SkString.h"
11 #include "include/private/SkOnce.h"
12 #include "src/utils/win/SkDWrite.h"
13 #include "src/utils/win/SkHRESULT.h"
14
15 #include <dwrite.h>
16
17 #if defined(__clang__)
18 #pragma clang diagnostic push
19 #pragma clang diagnostic ignored "-Wcast-function-type"
20 #endif
21
22 static IDWriteFactory* gDWriteFactory = nullptr;
23
release_dwrite_factory()24 static void release_dwrite_factory() {
25 if (gDWriteFactory) {
26 gDWriteFactory->Release();
27 }
28 }
29
create_dwrite_factory(IDWriteFactory ** factory)30 static void create_dwrite_factory(IDWriteFactory** factory) {
31 typedef decltype(DWriteCreateFactory)* DWriteCreateFactoryProc;
32 DWriteCreateFactoryProc dWriteCreateFactoryProc = reinterpret_cast<DWriteCreateFactoryProc>(
33 GetProcAddress(LoadLibraryW(L"dwrite.dll"), "DWriteCreateFactory"));
34
35 if (!dWriteCreateFactoryProc) {
36 HRESULT hr = HRESULT_FROM_WIN32(GetLastError());
37 if (!IS_ERROR(hr)) {
38 hr = ERROR_PROC_NOT_FOUND;
39 }
40 HRVM(hr, "Could not get DWriteCreateFactory proc.");
41 }
42
43 HRVM(dWriteCreateFactoryProc(DWRITE_FACTORY_TYPE_SHARED,
44 __uuidof(IDWriteFactory),
45 reinterpret_cast<IUnknown**>(factory)),
46 "Could not create DirectWrite factory.");
47 atexit(release_dwrite_factory);
48 }
49
50
sk_get_dwrite_factory()51 IDWriteFactory* sk_get_dwrite_factory() {
52 static SkOnce once;
53 once(create_dwrite_factory, &gDWriteFactory);
54 return gDWriteFactory;
55 }
56
57 ////////////////////////////////////////////////////////////////////////////////
58 // String conversion
59
60 /** Converts a utf8 string to a WCHAR string. */
sk_cstring_to_wchar(const char * skname,SkSMallocWCHAR * name)61 HRESULT sk_cstring_to_wchar(const char* skname, SkSMallocWCHAR* name) {
62 int wlen = MultiByteToWideChar(CP_UTF8, 0, skname, -1, nullptr, 0);
63 if (0 == wlen) {
64 HRM(HRESULT_FROM_WIN32(GetLastError()),
65 "Could not get length for wchar to utf-8 conversion.");
66 }
67 name->reset(wlen);
68 wlen = MultiByteToWideChar(CP_UTF8, 0, skname, -1, name->get(), wlen);
69 if (0 == wlen) {
70 HRM(HRESULT_FROM_WIN32(GetLastError()), "Could not convert wchar to utf-8.");
71 }
72 return S_OK;
73 }
74
75 /** Converts a WCHAR string to a utf8 string. */
sk_wchar_to_skstring(WCHAR * name,int nameLen,SkString * skname)76 HRESULT sk_wchar_to_skstring(WCHAR* name, int nameLen, SkString* skname) {
77 int len = WideCharToMultiByte(CP_UTF8, 0, name, nameLen, nullptr, 0, nullptr, nullptr);
78 if (0 == len) {
79 if (nameLen <= 0) {
80 skname->reset();
81 return S_OK;
82 }
83 HRM(HRESULT_FROM_WIN32(GetLastError()),
84 "Could not get length for utf-8 to wchar conversion.");
85 }
86 skname->resize(len);
87
88 len = WideCharToMultiByte(CP_UTF8, 0, name, nameLen, skname->writable_str(), len, nullptr, nullptr);
89 if (0 == len) {
90 HRM(HRESULT_FROM_WIN32(GetLastError()), "Could not convert utf-8 to wchar.");
91 }
92 return S_OK;
93 }
94
95 ////////////////////////////////////////////////////////////////////////////////
96 // Locale
97
sk_get_locale_string(IDWriteLocalizedStrings * names,const WCHAR * preferedLocale,SkString * skname)98 HRESULT sk_get_locale_string(IDWriteLocalizedStrings* names, const WCHAR* preferedLocale,
99 SkString* skname) {
100 UINT32 nameIndex = 0;
101 if (preferedLocale) {
102 // Ignore any errors and continue with index 0 if there is a problem.
103 BOOL nameExists = FALSE;
104 (void)names->FindLocaleName(preferedLocale, &nameIndex, &nameExists);
105 if (!nameExists) {
106 nameIndex = 0;
107 }
108 }
109
110 UINT32 nameLen;
111 HRM(names->GetStringLength(nameIndex, &nameLen), "Could not get name length.");
112
113 SkSMallocWCHAR name(nameLen + 1);
114 HRM(names->GetString(nameIndex, name.get(), nameLen + 1), "Could not get string.");
115
116 HR(sk_wchar_to_skstring(name.get(), nameLen, skname));
117 return S_OK;
118 }
119
SkGetGetUserDefaultLocaleNameProc(SkGetUserDefaultLocaleNameProc * proc)120 HRESULT SkGetGetUserDefaultLocaleNameProc(SkGetUserDefaultLocaleNameProc* proc) {
121 *proc = reinterpret_cast<SkGetUserDefaultLocaleNameProc>(
122 GetProcAddress(LoadLibraryW(L"Kernel32.dll"), "GetUserDefaultLocaleName")
123 );
124 if (!*proc) {
125 HRESULT hr = HRESULT_FROM_WIN32(GetLastError());
126 if (!IS_ERROR(hr)) {
127 hr = ERROR_PROC_NOT_FOUND;
128 }
129 return hr;
130 }
131 return S_OK;
132 }
133
134 #if defined(__clang__)
135 #pragma clang diagnostic pop
136 #endif
137
138 #endif//defined(SK_BUILD_FOR_WIN)
139