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
|
/* 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 "nsFontFace.h"
#include "nsIDOMCSSFontFaceRule.h"
#include "nsCSSRules.h"
#include "gfxTextRun.h"
#include "gfxUserFontSet.h"
#include "nsFontFaceLoader.h"
#include "mozilla/gfx/2D.h"
#include "brotli/decode.h"
#include "zlib.h"
#include "mozilla/dom/FontFaceSet.h"
using namespace mozilla;
using namespace mozilla::dom;
nsFontFace::nsFontFace(gfxFontEntry* aFontEntry,
gfxFontGroup* aFontGroup,
uint8_t aMatchType)
: mFontEntry(aFontEntry),
mFontGroup(aFontGroup),
mMatchType(aMatchType)
{
}
nsFontFace::~nsFontFace()
{
}
////////////////////////////////////////////////////////////////////////
// nsISupports
NS_IMPL_ISUPPORTS(nsFontFace, nsIDOMFontFace)
////////////////////////////////////////////////////////////////////////
// nsIDOMFontFace
NS_IMETHODIMP
nsFontFace::GetFromFontGroup(bool * aFromFontGroup)
{
*aFromFontGroup =
(mMatchType & gfxTextRange::kFontGroup) != 0;
return NS_OK;
}
NS_IMETHODIMP
nsFontFace::GetFromLanguagePrefs(bool * aFromLanguagePrefs)
{
*aFromLanguagePrefs =
(mMatchType & gfxTextRange::kPrefsFallback) != 0;
return NS_OK;
}
NS_IMETHODIMP
nsFontFace::GetFromSystemFallback(bool * aFromSystemFallback)
{
*aFromSystemFallback =
(mMatchType & gfxTextRange::kSystemFallback) != 0;
return NS_OK;
}
NS_IMETHODIMP
nsFontFace::GetName(nsAString & aName)
{
if (mFontEntry->IsUserFont() && !mFontEntry->IsLocalUserFont()) {
NS_ASSERTION(mFontEntry->mUserFontData, "missing userFontData");
aName = mFontEntry->mUserFontData->mRealName;
} else {
aName = mFontEntry->RealFaceName();
}
return NS_OK;
}
NS_IMETHODIMP
nsFontFace::GetCSSFamilyName(nsAString & aCSSFamilyName)
{
aCSSFamilyName = mFontEntry->FamilyName();
return NS_OK;
}
NS_IMETHODIMP
nsFontFace::GetRule(nsIDOMCSSFontFaceRule **aRule)
{
// check whether this font entry is associated with an @font-face rule
// in the relevant font group's user font set
nsCSSFontFaceRule* rule = nullptr;
if (mFontEntry->IsUserFont()) {
FontFaceSet::UserFontSet* fontSet =
static_cast<FontFaceSet::UserFontSet*>(mFontGroup->GetUserFontSet());
if (fontSet) {
FontFaceSet* fontFaceSet = fontSet->GetFontFaceSet();
if (fontFaceSet) {
rule = fontFaceSet->FindRuleForEntry(mFontEntry);
}
}
}
NS_IF_ADDREF(*aRule = rule);
return NS_OK;
}
NS_IMETHODIMP
nsFontFace::GetSrcIndex(int32_t * aSrcIndex)
{
if (mFontEntry->IsUserFont()) {
NS_ASSERTION(mFontEntry->mUserFontData, "missing userFontData");
*aSrcIndex = mFontEntry->mUserFontData->mSrcIndex;
} else {
*aSrcIndex = -1;
}
return NS_OK;
}
NS_IMETHODIMP
nsFontFace::GetURI(nsAString & aURI)
{
aURI.Truncate();
if (mFontEntry->IsUserFont() && !mFontEntry->IsLocalUserFont()) {
NS_ASSERTION(mFontEntry->mUserFontData, "missing userFontData");
if (mFontEntry->mUserFontData->mURI) {
nsAutoCString spec;
nsresult rv = mFontEntry->mUserFontData->mURI->GetSpec(spec);
NS_ENSURE_SUCCESS(rv, rv);
AppendUTF8toUTF16(spec, aURI);
}
}
return NS_OK;
}
NS_IMETHODIMP
nsFontFace::GetLocalName(nsAString & aLocalName)
{
if (mFontEntry->IsLocalUserFont()) {
NS_ASSERTION(mFontEntry->mUserFontData, "missing userFontData");
aLocalName = mFontEntry->mUserFontData->mLocalName;
} else {
aLocalName.Truncate();
}
return NS_OK;
}
static void
AppendToFormat(nsAString & aResult, const char* aFormat)
{
if (!aResult.IsEmpty()) {
aResult.Append(',');
}
aResult.AppendASCII(aFormat);
}
NS_IMETHODIMP
nsFontFace::GetFormat(nsAString & aFormat)
{
aFormat.Truncate();
if (mFontEntry->IsUserFont() && !mFontEntry->IsLocalUserFont()) {
NS_ASSERTION(mFontEntry->mUserFontData, "missing userFontData");
uint32_t formatFlags = mFontEntry->mUserFontData->mFormat;
if (formatFlags & gfxUserFontSet::FLAG_FORMAT_OPENTYPE) {
AppendToFormat(aFormat, "opentype");
}
if (formatFlags & gfxUserFontSet::FLAG_FORMAT_TRUETYPE) {
AppendToFormat(aFormat, "truetype");
}
if (formatFlags & gfxUserFontSet::FLAG_FORMAT_TRUETYPE_AAT) {
AppendToFormat(aFormat, "truetype-aat");
}
if (formatFlags & gfxUserFontSet::FLAG_FORMAT_EOT) {
AppendToFormat(aFormat, "embedded-opentype");
}
if (formatFlags & gfxUserFontSet::FLAG_FORMAT_SVG) {
AppendToFormat(aFormat, "svg");
}
if (formatFlags & gfxUserFontSet::FLAG_FORMAT_WOFF) {
AppendToFormat(aFormat, "woff");
}
if (formatFlags & gfxUserFontSet::FLAG_FORMAT_WOFF2) {
AppendToFormat(aFormat, "woff2");
}
}
return NS_OK;
}
NS_IMETHODIMP
nsFontFace::GetMetadata(nsAString & aMetadata)
{
aMetadata.Truncate();
if (mFontEntry->IsUserFont() && !mFontEntry->IsLocalUserFont()) {
NS_ASSERTION(mFontEntry->mUserFontData, "missing userFontData");
const gfxUserFontData* userFontData = mFontEntry->mUserFontData.get();
if (userFontData->mMetadata.Length() && userFontData->mMetaOrigLen) {
nsAutoCString str;
str.SetLength(userFontData->mMetaOrigLen);
if (str.Length() == userFontData->mMetaOrigLen) {
switch (userFontData->mCompression) {
case gfxUserFontData::kZlibCompression:
{
uLongf destLen = userFontData->mMetaOrigLen;
if (uncompress((Bytef *)(str.BeginWriting()), &destLen,
(const Bytef *)(userFontData->mMetadata.Elements()),
userFontData->mMetadata.Length()) == Z_OK &&
destLen == userFontData->mMetaOrigLen) {
AppendUTF8toUTF16(str, aMetadata);
}
}
break;
case gfxUserFontData::kBrotliCompression:
{
size_t decodedSize = userFontData->mMetaOrigLen;
if (BrotliDecoderDecompress(userFontData->mMetadata.Length(),
userFontData->mMetadata.Elements(),
&decodedSize,
(uint8_t*)str.BeginWriting()) == 1 &&
decodedSize == userFontData->mMetaOrigLen) {
AppendUTF8toUTF16(str, aMetadata);
}
}
break;
}
}
}
}
return NS_OK;
}
|
