1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
|
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsThebesFontEnumerator.h"
#include <stdint.h> // for uint32_t
#include "gfxPlatform.h" // for gfxPlatform
#include "mozilla/Assertions.h" // for MOZ_ASSERT_HELPER2
#include "mozilla/UniquePtr.h"
#include "mozilla/dom/Promise.h" // for mozilla::dom::Promise
#include "nsCOMPtr.h" // for nsCOMPtr
#include "nsDebug.h" // for NS_ENSURE_ARG_POINTER
#include "nsError.h" // for NS_OK, NS_FAILED, nsresult
#include "nsAtom.h" // for nsAtom, NS_Atomize
#include "nsID.h"
#include "nsMemory.h" // for nsMemory
#include "nsString.h" // for nsAutoCString, nsAutoString, etc
#include "nsTArray.h" // for nsTArray, nsTArray_Impl, etc
#include "nscore.h" // for char16_t, NS_IMETHODIMP
using mozilla::MakeUnique;
using mozilla::Runnable;
using mozilla::UniquePtr;
NS_IMPL_ISUPPORTS(nsThebesFontEnumerator, nsIFontEnumerator)
nsThebesFontEnumerator::nsThebesFontEnumerator() = default;
NS_IMETHODIMP
nsThebesFontEnumerator::EnumerateAllFonts(nsTArray<nsString>& aResult) {
return EnumerateFonts(nullptr, nullptr, aResult);
}
NS_IMETHODIMP
nsThebesFontEnumerator::EnumerateFonts(const char* aLangGroup,
const char* aGeneric,
nsTArray<nsString>& aResult) {
nsAutoCString generic;
if (aGeneric)
generic.Assign(aGeneric);
else
generic.SetIsVoid(true);
RefPtr<nsAtom> langGroupAtom;
if (aLangGroup) {
nsAutoCString lowered;
lowered.Assign(aLangGroup);
ToLowerCase(lowered);
langGroupAtom = NS_Atomize(lowered);
}
return gfxPlatform::GetPlatform()->GetFontList(langGroupAtom, generic,
aResult);
}
struct EnumerateFontsPromise final {
explicit EnumerateFontsPromise(mozilla::dom::Promise* aPromise)
: mPromise(aPromise) {
MOZ_ASSERT(aPromise);
MOZ_ASSERT(NS_IsMainThread());
}
RefPtr<mozilla::dom::Promise> mPromise;
};
class EnumerateFontsResult final : public Runnable {
public:
EnumerateFontsResult(nsresult aRv,
UniquePtr<EnumerateFontsPromise> aEnumerateFontsPromise,
nsTArray<nsString> aFontList)
: Runnable("EnumerateFontsResult"),
mRv(aRv),
mEnumerateFontsPromise(std::move(aEnumerateFontsPromise)),
mFontList(std::move(aFontList)),
mWorkerThread(do_GetCurrentThread()) {
MOZ_ASSERT(!NS_IsMainThread());
}
NS_IMETHOD Run() override {
MOZ_ASSERT(NS_IsMainThread());
if (NS_FAILED(mRv)) {
mEnumerateFontsPromise->mPromise->MaybeReject(mRv);
} else {
mEnumerateFontsPromise->mPromise->MaybeResolve(mFontList);
}
mWorkerThread->Shutdown();
return NS_OK;
}
private:
nsresult mRv;
UniquePtr<EnumerateFontsPromise> mEnumerateFontsPromise;
nsTArray<nsString> mFontList;
nsCOMPtr<nsIThread> mWorkerThread;
};
class EnumerateFontsTask final : public Runnable {
public:
EnumerateFontsTask(nsAtom* aLangGroupAtom, const nsAutoCString& aGeneric,
UniquePtr<EnumerateFontsPromise> aEnumerateFontsPromise,
nsIEventTarget* aMainThreadTarget)
: Runnable("EnumerateFontsTask"),
mLangGroupAtom(aLangGroupAtom),
mGeneric(aGeneric),
mEnumerateFontsPromise(std::move(aEnumerateFontsPromise)),
mMainThreadTarget(aMainThreadTarget) {
MOZ_ASSERT(NS_IsMainThread());
}
NS_IMETHOD Run() override {
MOZ_ASSERT(!NS_IsMainThread());
nsTArray<nsString> fontList;
nsresult rv = gfxPlatform::GetPlatform()->GetFontList(mLangGroupAtom,
mGeneric, fontList);
nsCOMPtr<nsIRunnable> runnable = new EnumerateFontsResult(
rv, std::move(mEnumerateFontsPromise), std::move(fontList));
mMainThreadTarget->Dispatch(runnable.forget());
return NS_OK;
}
private:
RefPtr<nsAtom> mLangGroupAtom;
nsAutoCStringN<16> mGeneric;
UniquePtr<EnumerateFontsPromise> mEnumerateFontsPromise;
RefPtr<nsIEventTarget> mMainThreadTarget;
};
NS_IMETHODIMP
nsThebesFontEnumerator::EnumerateAllFontsAsync(JSContext* aCx,
JS::MutableHandleValue aRval) {
return EnumerateFontsAsync(nullptr, nullptr, aCx, aRval);
}
NS_IMETHODIMP
nsThebesFontEnumerator::EnumerateFontsAsync(const char* aLangGroup,
const char* aGeneric,
JSContext* aCx,
JS::MutableHandleValue aRval) {
MOZ_ASSERT(NS_IsMainThread());
nsCOMPtr<nsIGlobalObject> global = xpc::CurrentNativeGlobal(aCx);
NS_ENSURE_TRUE(global, NS_ERROR_UNEXPECTED);
mozilla::ErrorResult errv;
RefPtr<mozilla::dom::Promise> promise =
mozilla::dom::Promise::Create(global, errv);
if (errv.Failed()) {
return errv.StealNSResult();
}
auto enumerateFontsPromise = MakeUnique<EnumerateFontsPromise>(promise);
nsCOMPtr<nsIThread> thread;
nsresult rv = NS_NewNamedThread("FontEnumThread", getter_AddRefs(thread));
NS_ENSURE_SUCCESS(rv, rv);
RefPtr<nsAtom> langGroupAtom;
if (aLangGroup) {
nsAutoCStringN<16> lowered;
lowered.Assign(aLangGroup);
ToLowerCase(lowered);
langGroupAtom = NS_Atomize(lowered);
}
nsAutoCString generic;
if (aGeneric) {
generic.Assign(aGeneric);
} else {
generic.SetIsVoid(true);
}
nsCOMPtr<nsIEventTarget> target =
global->EventTargetFor(mozilla::TaskCategory::Other);
nsCOMPtr<nsIRunnable> runnable = new EnumerateFontsTask(
langGroupAtom, generic, std::move(enumerateFontsPromise), target);
thread->Dispatch(runnable.forget(), NS_DISPATCH_NORMAL);
if (!ToJSValue(aCx, promise, aRval)) {
return NS_ERROR_FAILURE;
}
return NS_OK;
}
NS_IMETHODIMP
nsThebesFontEnumerator::HaveFontFor(const char* aLangGroup, bool* aResult) {
NS_ENSURE_ARG_POINTER(aResult);
*aResult = true;
return NS_OK;
}
NS_IMETHODIMP
nsThebesFontEnumerator::GetDefaultFont(const char* aLangGroup,
const char* aGeneric,
char16_t** aResult) {
if (NS_WARN_IF(!aResult) || NS_WARN_IF(!aLangGroup) ||
NS_WARN_IF(!aGeneric)) {
return NS_ERROR_INVALID_ARG;
}
*aResult = nullptr;
nsAutoCString defaultFontName(gfxPlatform::GetPlatform()->GetDefaultFontName(
nsDependentCString(aLangGroup), nsDependentCString(aGeneric)));
if (!defaultFontName.IsEmpty()) {
*aResult = UTF8ToNewUnicode(defaultFontName);
}
return NS_OK;
}
NS_IMETHODIMP
nsThebesFontEnumerator::UpdateFontList(bool* _retval) {
gfxPlatform::GetPlatform()->UpdateFontList();
*_retval = false; // always return false for now
return NS_OK;
}
NS_IMETHODIMP
nsThebesFontEnumerator::GetStandardFamilyName(const char16_t* aName,
char16_t** aResult) {
NS_ENSURE_ARG_POINTER(aResult);
NS_ENSURE_ARG_POINTER(aName);
nsAutoString name(aName);
if (name.IsEmpty()) {
*aResult = nullptr;
return NS_OK;
}
nsAutoCString family;
gfxPlatform::GetPlatform()->GetStandardFamilyName(
NS_ConvertUTF16toUTF8(aName), family);
if (family.IsEmpty()) {
*aResult = nullptr;
return NS_OK;
}
*aResult = UTF8ToNewUnicode(family);
return NS_OK;
}
|
