gfx/thebes/gfxQtPlatform.cpp@97036ab72558
gfx/thebes/gfxQtPlatform.cpp
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
2 * This Source Code Form is subject to the terms of the Mozilla Public
3 * License, v. 2.0. If a copy of the MPL was not distributed with this
4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6 #include <QPixmap>
7 #include <QWindow>
8 #ifdef MOZ_X11
9 #include <qpa/qplatformnativeinterface.h>
10 #include <qpa/qplatformintegration.h>
11 #endif
12 #include <QGuiApplication>
13 #include <QScreen>
15 #include "gfxQtPlatform.h"
17 #include "gfxFontconfigUtils.h"
19 #include "mozilla/gfx/2D.h"
21 #include "cairo.h"
23 #include "gfxImageSurface.h"
24 #include "gfxQPainterSurface.h"
25 #include "nsUnicodeProperties.h"
27 #include "gfxPangoFonts.h"
28 #include "gfxContext.h"
29 #include "gfxUserFontSet.h"
31 #include "nsUnicharUtils.h"
33 #include "nsMathUtils.h"
34 #include "nsTArray.h"
35 #ifdef MOZ_X11
36 #include "gfxXlibSurface.h"
37 #include "prenv.h"
38 #endif
40 #include "qcms.h"
42 #include "mozilla/Preferences.h"
44 using namespace mozilla;
45 using namespace mozilla::unicode;
46 using namespace mozilla::gfx;
48 gfxFontconfigUtils *gfxQtPlatform::sFontconfigUtils = nullptr;
49 #ifdef MOZ_X11
50 bool gfxQtPlatform::sUseXRender = true;
51 #endif
53 static gfxImageFormat sOffscreenFormat = gfxImageFormat::RGB24;
55 gfxQtPlatform::gfxQtPlatform()
56 {
57 #ifdef MOZ_X11
58 sUseXRender = mozilla::Preferences::GetBool("gfx.xrender.enabled");
59 #endif
60 if (!sFontconfigUtils)
61 sFontconfigUtils = gfxFontconfigUtils::GetFontconfigUtils();
63 mScreenDepth = qApp->primaryScreen()->depth();
64 if (mScreenDepth == 16) {
65 sOffscreenFormat = gfxImageFormat::RGB16_565;
66 }
67 uint32_t canvasMask = BackendTypeBit(BackendType::CAIRO) | BackendTypeBit(BackendType::SKIA);
68 uint32_t contentMask = BackendTypeBit(BackendType::CAIRO) | BackendTypeBit(BackendType::SKIA);
69 InitBackendPrefs(canvasMask, BackendType::CAIRO,
70 contentMask, BackendType::CAIRO);
71 }
73 gfxQtPlatform::~gfxQtPlatform()
74 {
75 gfxFontconfigUtils::Shutdown();
76 sFontconfigUtils = nullptr;
78 gfxPangoFontGroup::Shutdown();
79 }
81 #ifdef MOZ_X11
82 Display*
83 gfxQtPlatform::GetXDisplay(QWindow* aWindow)
84 {
85 return (Display*)(qApp->platformNativeInterface()->
86 nativeResourceForScreen("display", aWindow ? aWindow->screen() : qApp->primaryScreen()));
87 }
89 Screen*
90 gfxQtPlatform::GetXScreen(QWindow* aWindow)
91 {
92 return ScreenOfDisplay(GetXDisplay(aWindow),
93 (int)(intptr_t)qApp->platformNativeInterface()->
94 nativeResourceForScreen("screen", aWindow ? aWindow->screen() : qApp->primaryScreen()));
95 }
96 #endif
98 already_AddRefed<gfxASurface>
99 gfxQtPlatform::CreateOffscreenSurface(const IntSize& size,
100 gfxContentType contentType)
101 {
102 gfxImageFormat imageFormat = OptimalFormatForContent(contentType);
104 nsRefPtr<gfxASurface> newSurface =
105 new gfxImageSurface(gfxIntSize(size.width, size.height), imageFormat);
107 return newSurface.forget();
108 }
110 already_AddRefed<gfxASurface>
111 gfxQtPlatform::OptimizeImage(gfxImageSurface *aSurface,
112 gfxImageFormat format)
113 {
114 /* Qt have no special offscreen surfaces so we can avoid a copy */
115 if (OptimalFormatForContent(gfxASurface::ContentFromFormat(format)) ==
116 format) {
117 return nullptr;
118 }
120 return gfxPlatform::OptimizeImage(aSurface, format);
121 }
124 nsresult
125 gfxQtPlatform::GetFontList(nsIAtom *aLangGroup,
126 const nsACString& aGenericFamily,
127 nsTArray<nsString>& aListOfFonts)
128 {
129 return sFontconfigUtils->GetFontList(aLangGroup, aGenericFamily,
130 aListOfFonts);
131 }
133 nsresult
134 gfxQtPlatform::UpdateFontList()
135 {
136 return sFontconfigUtils->UpdateFontList();
137 }
139 nsresult
140 gfxQtPlatform::ResolveFontName(const nsAString& aFontName,
141 FontResolverCallback aCallback,
142 void *aClosure,
143 bool& aAborted)
144 {
145 return sFontconfigUtils->ResolveFontName(aFontName, aCallback,
146 aClosure, aAborted);
147 }
149 nsresult
150 gfxQtPlatform::GetStandardFamilyName(const nsAString& aFontName, nsAString& aFamilyName)
151 {
152 return sFontconfigUtils->GetStandardFamilyName(aFontName, aFamilyName);
153 }
155 gfxFontGroup *
156 gfxQtPlatform::CreateFontGroup(const nsAString &aFamilies,
157 const gfxFontStyle *aStyle,
158 gfxUserFontSet* aUserFontSet)
159 {
160 return new gfxPangoFontGroup(aFamilies, aStyle, aUserFontSet);
161 }
163 gfxFontEntry*
164 gfxQtPlatform::LookupLocalFont(const gfxProxyFontEntry *aProxyEntry,
165 const nsAString& aFontName)
166 {
167 return gfxPangoFontGroup::NewFontEntry(*aProxyEntry, aFontName);
168 }
170 gfxFontEntry*
171 gfxQtPlatform::MakePlatformFont(const gfxProxyFontEntry *aProxyEntry,
172 const uint8_t *aFontData, uint32_t aLength)
173 {
174 // passing ownership of the font data to the new font entry
175 return gfxPangoFontGroup::NewFontEntry(*aProxyEntry,
176 aFontData, aLength);
177 }
179 bool
180 gfxQtPlatform::SupportsOffMainThreadCompositing()
181 {
182 #if defined(MOZ_X11) && !defined(NIGHTLY_BUILD)
183 return (PR_GetEnv("MOZ_USE_OMTC") != nullptr) ||
184 (PR_GetEnv("MOZ_OMTC_ENABLED") != nullptr);
185 #else
186 return true;
187 #endif
188 }
190 bool
191 gfxQtPlatform::IsFontFormatSupported(nsIURI *aFontURI, uint32_t aFormatFlags)
192 {
193 // check for strange format flags
194 NS_ASSERTION(!(aFormatFlags & gfxUserFontSet::FLAG_FORMAT_NOT_USED),
195 "strange font format hint set");
197 // accept supported formats
198 // Pango doesn't apply features from AAT TrueType extensions.
199 // Assume that if this is the only SFNT format specified,
200 // then AAT extensions are required for complex script support.
201 if (aFormatFlags & (gfxUserFontSet::FLAG_FORMAT_WOFF |
202 gfxUserFontSet::FLAG_FORMAT_OPENTYPE |
203 gfxUserFontSet::FLAG_FORMAT_TRUETYPE)) {
204 return true;
205 }
207 // reject all other formats, known and unknown
208 if (aFormatFlags != 0) {
209 return false;
210 }
212 // no format hint set, need to look at data
213 return true;
214 }
216 void
217 gfxQtPlatform::GetPlatformCMSOutputProfile(void *&mem, size_t &size)
218 {
219 mem = nullptr;
220 size = 0;
221 }
223 int32_t
224 gfxQtPlatform::GetDPI()
225 {
226 return qApp->primaryScreen()->logicalDotsPerInch();
227 }
229 gfxImageFormat
230 gfxQtPlatform::GetOffscreenFormat()
231 {
232 return sOffscreenFormat;
233 }
235 int
236 gfxQtPlatform::GetScreenDepth() const
237 {
238 return mScreenDepth;
239 }
241 TemporaryRef<ScaledFont>
242 gfxQtPlatform::GetScaledFontForFont(DrawTarget* aTarget, gfxFont* aFont)
243 {
244 return GetScaledFontForFontWithCairoSkia(aTarget, aFont);
245 }
