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gecko-dev/gfx/thebes/gfxPlatform.cpp

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/* -*- 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/. */
#ifdef MOZ_LOGGING
#define FORCE_PR_LOG /* Allow logging in the release build */
#endif
#include "mozilla/layers/AsyncTransactionTracker.h" // for AsyncTransactionTracker
#include "mozilla/layers/CompositorChild.h"
#include "mozilla/layers/CompositorParent.h"
#include "mozilla/layers/ImageBridgeChild.h"
#include "mozilla/layers/SharedBufferManagerChild.h"
#include "mozilla/layers/ISurfaceAllocator.h" // for GfxMemoryImageReporter
#include "prlog.h"
#include "gfxPlatform.h"
#include "gfxPrefs.h"
#ifdef XP_WIN
#include <process.h>
#define getpid _getpid
#else
#include <unistd.h>
#endif
#include "nsXULAppAPI.h"
#include "nsDirectoryServiceUtils.h"
#include "nsDirectoryServiceDefs.h"
#if defined(XP_WIN)
#include "gfxWindowsPlatform.h"
#include "gfxD2DSurface.h"
#elif defined(XP_MACOSX)
#include "gfxPlatformMac.h"
#include "gfxQuartzSurface.h"
#elif defined(MOZ_WIDGET_GTK)
#include "gfxPlatformGtk.h"
#elif defined(MOZ_WIDGET_QT)
#include "gfxQtPlatform.h"
#elif defined(ANDROID)
#include "gfxAndroidPlatform.h"
#endif
#include "nsGkAtoms.h"
#include "gfxPlatformFontList.h"
#include "gfxContext.h"
#include "gfxImageSurface.h"
#include "nsUnicodeProperties.h"
#include "harfbuzz/hb.h"
#include "gfxGraphiteShaper.h"
#include "gfx2DGlue.h"
#include "gfxGradientCache.h"
#include "nsUnicodeRange.h"
#include "nsServiceManagerUtils.h"
#include "nsTArray.h"
#include "nsILocaleService.h"
#include "nsIObserverService.h"
#include "MainThreadUtils.h"
#include "nsWeakReference.h"
#include "cairo.h"
#include "qcms.h"
#include "plstr.h"
#include "nsCRT.h"
#include "GLContext.h"
#include "GLContextProvider.h"
#ifdef MOZ_WIDGET_ANDROID
#include "TexturePoolOGL.h"
#endif
#include "mozilla/Hal.h"
#ifdef USE_SKIA
#include "skia/SkGraphics.h"
#include "SkiaGLGlue.h"
#else
class mozilla::gl::SkiaGLGlue : public GenericAtomicRefCounted {
};
#endif
#include "mozilla/Preferences.h"
#include "mozilla/Assertions.h"
#include "mozilla/Attributes.h"
#include "mozilla/Mutex.h"
#include "nsIGfxInfo.h"
#include "nsIXULRuntime.h"
#ifdef MOZ_WIDGET_GONK
namespace mozilla {
namespace layers {
void InitGralloc();
}
}
#endif
using namespace mozilla;
using namespace mozilla::layers;
gfxPlatform *gPlatform = nullptr;
static bool gEverInitialized = false;
static Mutex* gGfxPlatformPrefsLock = nullptr;
// These two may point to the same profile
static qcms_profile *gCMSOutputProfile = nullptr;
static qcms_profile *gCMSsRGBProfile = nullptr;
static qcms_transform *gCMSRGBTransform = nullptr;
static qcms_transform *gCMSInverseRGBTransform = nullptr;
static qcms_transform *gCMSRGBATransform = nullptr;
static bool gCMSInitialized = false;
static eCMSMode gCMSMode = eCMSMode_Off;
static bool gCMSIntentInitialized = false;
static int gCMSIntent = QCMS_INTENT_DEFAULT;
static void ShutdownCMS();
#include "mozilla/gfx/2D.h"
#include "mozilla/gfx/SourceSurfaceCairo.h"
using namespace mozilla::gfx;
/* Class to listen for pref changes so that chrome code can dynamically
force sRGB as an output profile. See Bug #452125. */
class SRGBOverrideObserver MOZ_FINAL : public nsIObserver,
public nsSupportsWeakReference
{
~SRGBOverrideObserver() {}
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIOBSERVER
};
NS_IMPL_ISUPPORTS(SRGBOverrideObserver, nsIObserver, nsISupportsWeakReference)
#define GFX_DOWNLOADABLE_FONTS_ENABLED "gfx.downloadable_fonts.enabled"
#define GFX_PREF_FALLBACK_USE_CMAPS "gfx.font_rendering.fallback.always_use_cmaps"
#define GFX_PREF_OPENTYPE_SVG "gfx.font_rendering.opentype_svg.enabled"
#define GFX_PREF_WORD_CACHE_CHARLIMIT "gfx.font_rendering.wordcache.charlimit"
#define GFX_PREF_WORD_CACHE_MAXENTRIES "gfx.font_rendering.wordcache.maxentries"
#define GFX_PREF_GRAPHITE_SHAPING "gfx.font_rendering.graphite.enabled"
#define BIDI_NUMERAL_PREF "bidi.numeral"
#define GFX_PREF_CMS_FORCE_SRGB "gfx.color_management.force_srgb"
NS_IMETHODIMP
SRGBOverrideObserver::Observe(nsISupports *aSubject,
const char *aTopic,
const char16_t* someData)
{
NS_ASSERTION(NS_strcmp(someData,
MOZ_UTF16(GFX_PREF_CMS_FORCE_SRGB)) == 0,
"Restarting CMS on wrong pref!");
ShutdownCMS();
return NS_OK;
}
static const char* kObservedPrefs[] = {
"gfx.downloadable_fonts.",
"gfx.font_rendering.",
BIDI_NUMERAL_PREF,
nullptr
};
class FontPrefsObserver MOZ_FINAL : public nsIObserver
{
~FontPrefsObserver() {}
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIOBSERVER
};
NS_IMPL_ISUPPORTS(FontPrefsObserver, nsIObserver)
NS_IMETHODIMP
FontPrefsObserver::Observe(nsISupports *aSubject,
const char *aTopic,
const char16_t *someData)
{
if (!someData) {
NS_ERROR("font pref observer code broken");
return NS_ERROR_UNEXPECTED;
}
NS_ASSERTION(gfxPlatform::GetPlatform(), "the singleton instance has gone");
gfxPlatform::GetPlatform()->FontsPrefsChanged(NS_ConvertUTF16toUTF8(someData).get());
return NS_OK;
}
class MemoryPressureObserver MOZ_FINAL : public nsIObserver
{
~MemoryPressureObserver() {}
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIOBSERVER
};
NS_IMPL_ISUPPORTS(MemoryPressureObserver, nsIObserver)
NS_IMETHODIMP
MemoryPressureObserver::Observe(nsISupports *aSubject,
const char *aTopic,
const char16_t *someData)
{
NS_ASSERTION(strcmp(aTopic, "memory-pressure") == 0, "unexpected event topic");
Factory::PurgeAllCaches();
gfxPlatform::GetPlatform()->PurgeSkiaCache();
return NS_OK;
}
// this needs to match the list of pref font.default.xx entries listed in all.js!
// the order *must* match the order in eFontPrefLang
static const char *gPrefLangNames[] = {
"x-western",
"ja",
"zh-TW",
"zh-CN",
"zh-HK",
"ko",
"x-cyrillic",
"el",
"th",
"he",
"ar",
"x-devanagari",
"x-tamil",
"x-armn",
"x-beng",
"x-cans",
"x-ethi",
"x-geor",
"x-gujr",
"x-guru",
"x-khmr",
"x-mlym",
"x-orya",
"x-telu",
"x-knda",
"x-sinh",
"x-tibt",
"x-unicode",
};
gfxPlatform::gfxPlatform()
: mAzureCanvasBackendCollector(MOZ_THIS_IN_INITIALIZER_LIST(),
&gfxPlatform::GetAzureBackendInfo)
{
mAllowDownloadableFonts = UNINITIALIZED_VALUE;
mFallbackUsesCmaps = UNINITIALIZED_VALUE;
mWordCacheCharLimit = UNINITIALIZED_VALUE;
mWordCacheMaxEntries = UNINITIALIZED_VALUE;
mGraphiteShapingEnabled = UNINITIALIZED_VALUE;
mOpenTypeSVGEnabled = UNINITIALIZED_VALUE;
mBidiNumeralOption = UNINITIALIZED_VALUE;
mSkiaGlue = nullptr;
uint32_t canvasMask = BackendTypeBit(BackendType::CAIRO) | BackendTypeBit(BackendType::SKIA);
uint32_t contentMask = BackendTypeBit(BackendType::CAIRO);
InitBackendPrefs(canvasMask, BackendType::CAIRO,
contentMask, BackendType::CAIRO);
}
gfxPlatform*
gfxPlatform::GetPlatform()
{
if (!gPlatform) {
Init();
}
return gPlatform;
}
void RecordingPrefChanged(const char *aPrefName, void *aClosure)
{
if (Preferences::GetBool("gfx.2d.recording", false)) {
nsAutoCString fileName;
nsAdoptingString prefFileName = Preferences::GetString("gfx.2d.recordingfile");
if (prefFileName) {
fileName.Append(NS_ConvertUTF16toUTF8(prefFileName));
} else {
nsCOMPtr<nsIFile> tmpFile;
if (NS_FAILED(NS_GetSpecialDirectory(NS_OS_TEMP_DIR, getter_AddRefs(tmpFile)))) {
return;
}
fileName.AppendPrintf("moz2drec_%i_%i.aer", XRE_GetProcessType(), getpid());
nsresult rv = tmpFile->AppendNative(fileName);
if (NS_FAILED(rv))
return;
rv = tmpFile->GetNativePath(fileName);
if (NS_FAILED(rv))
return;
}
gPlatform->mRecorder = Factory::CreateEventRecorderForFile(fileName.BeginReading());
printf_stderr("Recording to %s\n", fileName.get());
Factory::SetGlobalEventRecorder(gPlatform->mRecorder);
} else {
Factory::SetGlobalEventRecorder(nullptr);
}
}
void
gfxPlatform::Init()
{
if (gEverInitialized) {
NS_RUNTIMEABORT("Already started???");
}
gEverInitialized = true;
// Initialize the preferences by creating the singleton.
gfxPrefs::GetSingleton();
gGfxPlatformPrefsLock = new Mutex("gfxPlatform::gGfxPlatformPrefsLock");
/* Initialize the GfxInfo service.
* Note: we can't call functions on GfxInfo that depend
* on gPlatform until after it has been initialized
* below. GfxInfo initialization annotates our
* crash reports so we want to do it before
* we try to load any drivers and do device detection
* incase that code crashes. See bug #591561. */
nsCOMPtr<nsIGfxInfo> gfxInfo;
/* this currently will only succeed on Windows */
gfxInfo = do_GetService("@mozilla.org/gfx/info;1");
#if defined(XP_WIN)
gPlatform = new gfxWindowsPlatform;
#elif defined(XP_MACOSX)
gPlatform = new gfxPlatformMac;
#elif defined(MOZ_WIDGET_GTK)
gPlatform = new gfxPlatformGtk;
#elif defined(MOZ_WIDGET_QT)
gPlatform = new gfxQtPlatform;
#elif defined(ANDROID)
gPlatform = new gfxAndroidPlatform;
#else
#error "No gfxPlatform implementation available"
#endif
#ifdef DEBUG
mozilla::gl::GLContext::StaticInit();
#endif
InitLayersIPC();
nsresult rv;
#if defined(XP_MACOSX) || defined(XP_WIN) || defined(ANDROID) // temporary, until this is implemented on others
rv = gfxPlatformFontList::Init();
if (NS_FAILED(rv)) {
NS_RUNTIMEABORT("Could not initialize gfxPlatformFontList");
}
#endif
gPlatform->mScreenReferenceSurface =
gPlatform->CreateOffscreenSurface(IntSize(1, 1),
gfxContentType::COLOR_ALPHA);
if (!gPlatform->mScreenReferenceSurface) {
NS_RUNTIMEABORT("Could not initialize mScreenReferenceSurface");
}
gPlatform->mScreenReferenceDrawTarget =
gPlatform->CreateOffscreenContentDrawTarget(IntSize(1, 1),
SurfaceFormat::B8G8R8A8);
if (!gPlatform->mScreenReferenceDrawTarget) {
NS_RUNTIMEABORT("Could not initialize mScreenReferenceDrawTarget");
}
rv = gfxFontCache::Init();
if (NS_FAILED(rv)) {
NS_RUNTIMEABORT("Could not initialize gfxFontCache");
}
/* Create and register our CMS Override observer. */
gPlatform->mSRGBOverrideObserver = new SRGBOverrideObserver();
Preferences::AddWeakObserver(gPlatform->mSRGBOverrideObserver, GFX_PREF_CMS_FORCE_SRGB);
gPlatform->mFontPrefsObserver = new FontPrefsObserver();
Preferences::AddStrongObservers(gPlatform->mFontPrefsObserver, kObservedPrefs);
mozilla::gl::GLContext::PlatformStartup();
#ifdef MOZ_WIDGET_ANDROID
// Texture pool init
mozilla::gl::TexturePoolOGL::Init();
#endif
#ifdef MOZ_WIDGET_GONK
mozilla::layers::InitGralloc();
#endif
Preferences::RegisterCallbackAndCall(RecordingPrefChanged, "gfx.2d.recording", nullptr);
CreateCMSOutputProfile();
// Listen to memory pressure event so we can purge DrawTarget caches
nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
if (obs) {
gPlatform->mMemoryPressureObserver = new MemoryPressureObserver();
obs->AddObserver(gPlatform->mMemoryPressureObserver, "memory-pressure", false);
}
RegisterStrongMemoryReporter(new GfxMemoryImageReporter());
}
static bool sLayersIPCIsUp = false;
void
gfxPlatform::Shutdown()
{
if (!gPlatform) {
return;
}
MOZ_ASSERT(!sLayersIPCIsUp);
// These may be called before the corresponding subsystems have actually
// started up. That's OK, they can handle it.
gfxFontCache::Shutdown();
gfxFontGroup::Shutdown();
gfxGradientCache::Shutdown();
gfxAlphaBoxBlur::ShutdownBlurCache();
gfxGraphiteShaper::Shutdown();
gfxPlatformFontList::Shutdown();
// Free the various non-null transforms and loaded profiles
ShutdownCMS();
// In some cases, gPlatform may not be created but Shutdown() called,
// e.g., during xpcshell tests.
if (gPlatform) {
/* Unregister our CMS Override callback. */
NS_ASSERTION(gPlatform->mSRGBOverrideObserver, "mSRGBOverrideObserver has alreay gone");
Preferences::RemoveObserver(gPlatform->mSRGBOverrideObserver, GFX_PREF_CMS_FORCE_SRGB);
gPlatform->mSRGBOverrideObserver = nullptr;
NS_ASSERTION(gPlatform->mFontPrefsObserver, "mFontPrefsObserver has alreay gone");
Preferences::RemoveObservers(gPlatform->mFontPrefsObserver, kObservedPrefs);
gPlatform->mFontPrefsObserver = nullptr;
NS_ASSERTION(gPlatform->mMemoryPressureObserver, "mMemoryPressureObserver has already gone");
nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
if (obs) {
obs->RemoveObserver(gPlatform->mMemoryPressureObserver, "memory-pressure");
}
gPlatform->mMemoryPressureObserver = nullptr;
gPlatform->mSkiaGlue = nullptr;
}
#ifdef MOZ_WIDGET_ANDROID
// Shut down the texture pool
mozilla::gl::TexturePoolOGL::Shutdown();
#endif
// Shut down the default GL context provider.
mozilla::gl::GLContextProvider::Shutdown();
#if defined(XP_WIN)
// The above shutdown calls operate on the available context providers on
// most platforms. Windows is a "special snowflake", though, and has three
// context providers available, so we have to shut all of them down.
// We should only support the default GL provider on Windows; then, this
// could go away. Unfortunately, we currently support WGL (the default) for
// WebGL on Optimus.
mozilla::gl::GLContextProviderEGL::Shutdown();
#endif
delete gGfxPlatformPrefsLock;
gfxPrefs::DestroySingleton();
gfxFont::DestroySingletons();
delete gPlatform;
gPlatform = nullptr;
}
/* static */ void
gfxPlatform::InitLayersIPC()
{
if (sLayersIPCIsUp) {
return;
}
sLayersIPCIsUp = true;
AsyncTransactionTrackersHolder::Initialize();
if (UsesOffMainThreadCompositing() &&
XRE_GetProcessType() == GeckoProcessType_Default)
{
mozilla::layers::CompositorParent::StartUp();
#ifndef MOZ_WIDGET_GONK
if (gfxPrefs::AsyncVideoEnabled()) {
mozilla::layers::ImageBridgeChild::StartUp();
}
#else
mozilla::layers::ImageBridgeChild::StartUp();
SharedBufferManagerChild::StartUp();
#endif
}
}
/* static */ void
gfxPlatform::ShutdownLayersIPC()
{
if (!sLayersIPCIsUp) {
return;
}
sLayersIPCIsUp = false;
if (UsesOffMainThreadCompositing() &&
XRE_GetProcessType() == GeckoProcessType_Default)
{
// This must happen after the shutdown of media and widgets, which
// are triggered by the NS_XPCOM_SHUTDOWN_OBSERVER_ID notification.
layers::ImageBridgeChild::ShutDown();
#ifdef MOZ_WIDGET_GONK
layers::SharedBufferManagerChild::ShutDown();
#endif
layers::CompositorParent::ShutDown();
}
}
gfxPlatform::~gfxPlatform()
{
mScreenReferenceSurface = nullptr;
mScreenReferenceDrawTarget = nullptr;
// The cairo folks think we should only clean up in debug builds,
// but we're generally in the habit of trying to shut down as
// cleanly as possible even in production code, so call this
// cairo_debug_* function unconditionally.
//
// because cairo can assert and thus crash on shutdown, don't do this in release builds
#if defined(DEBUG) || defined(NS_BUILD_REFCNT_LOGGING) || defined(NS_TRACE_MALLOC) || defined(MOZ_VALGRIND)
#ifdef USE_SKIA
// must do Skia cleanup before Cairo cleanup, because Skia may be referencing
// Cairo objects e.g. through SkCairoFTTypeface
SkGraphics::Term();
#endif
#if MOZ_TREE_CAIRO
cairo_debug_reset_static_data();
#endif
#endif
}
cairo_user_data_key_t kDrawTarget;
TemporaryRef<DrawTarget>
gfxPlatform::CreateDrawTargetForSurface(gfxASurface *aSurface, const IntSize& aSize)
{
SurfaceFormat format = Optimal2DFormatForContent(aSurface->GetContentType());
RefPtr<DrawTarget> drawTarget = Factory::CreateDrawTargetForCairoSurface(aSurface->CairoSurface(), aSize, &format);
aSurface->SetData(&kDrawTarget, drawTarget, nullptr);
return drawTarget.forget();
}
// This is a temporary function used by ContentClient to build a DrawTarget
// around the gfxASurface. This should eventually be replaced by plumbing
// the DrawTarget through directly
TemporaryRef<DrawTarget>
gfxPlatform::CreateDrawTargetForUpdateSurface(gfxASurface *aSurface, const IntSize& aSize)
{
#ifdef XP_MACOSX
// this is a bit of a hack that assumes that the buffer associated with the CGContext
// will live around long enough that nothing bad will happen.
if (aSurface->GetType() == gfxSurfaceType::Quartz) {
return Factory::CreateDrawTargetForCairoCGContext(static_cast<gfxQuartzSurface*>(aSurface)->GetCGContext(), aSize);
}
#endif
MOZ_CRASH();
return nullptr;
}
cairo_user_data_key_t kSourceSurface;
/**
* Record the backend that was used to construct the SourceSurface.
* When getting the cached SourceSurface for a gfxASurface/DrawTarget pair,
* we check to make sure the DrawTarget's backend matches the backend
* for the cached SourceSurface, and only use it if they match. This
* can avoid expensive and unnecessary readbacks.
*/
struct SourceSurfaceUserData
{
RefPtr<SourceSurface> mSrcSurface;
BackendType mBackendType;
};
void SourceBufferDestroy(void *srcSurfUD)
{
delete static_cast<SourceSurfaceUserData*>(srcSurfUD);
}
UserDataKey kThebesSurface;
struct DependentSourceSurfaceUserData
{
nsRefPtr<gfxASurface> mSurface;
};
void SourceSurfaceDestroyed(void *aData)
{
delete static_cast<DependentSourceSurfaceUserData*>(aData);
}
void
gfxPlatform::ClearSourceSurfaceForSurface(gfxASurface *aSurface)
{
aSurface->SetData(&kSourceSurface, nullptr, nullptr);
}
/* static */ TemporaryRef<SourceSurface>
gfxPlatform::GetSourceSurfaceForSurface(DrawTarget *aTarget, gfxASurface *aSurface)
{
if (!aSurface->CairoSurface() || aSurface->CairoStatus()) {
return nullptr;
}
if (!aTarget) {
aTarget = gfxPlatform::GetPlatform()->ScreenReferenceDrawTarget();
if (!aTarget) {
return nullptr;
}
}
void *userData = aSurface->GetData(&kSourceSurface);
if (userData) {
SourceSurfaceUserData *surf = static_cast<SourceSurfaceUserData*>(userData);
if (surf->mSrcSurface->IsValid() && surf->mBackendType == aTarget->GetBackendType()) {
return surf->mSrcSurface;
}
// We can just continue here as when setting new user data the destroy
// function will be called for the old user data.
}
SurfaceFormat format;
if (aSurface->GetContentType() == gfxContentType::ALPHA) {
format = SurfaceFormat::A8;
} else if (aSurface->GetContentType() == gfxContentType::COLOR) {
format = SurfaceFormat::B8G8R8X8;
} else {
format = SurfaceFormat::B8G8R8A8;
}
if (aTarget->GetBackendType() == BackendType::CAIRO) {
// If we're going to be used with a CAIRO DrawTarget, then just create a
// SourceSurfaceCairo since we don't know the underlying type of the CAIRO
// DrawTarget and can't pick a better surface type. Doing this also avoids
// readback of aSurface's surface into memory if, for example, aSurface
// wraps an xlib cairo surface (which can be important to avoid a major
// slowdown).
NativeSurface surf;
surf.mFormat = format;
surf.mType = NativeSurfaceType::CAIRO_SURFACE;
surf.mSurface = aSurface->CairoSurface();
surf.mSize = ToIntSize(aSurface->GetSize());
// We return here regardless of whether CreateSourceSurfaceFromNativeSurface
// succeeds or not since we don't expect to be able to do any better below
// if it fails.
//
// Note that the returned SourceSurfaceCairo holds a strong reference to
// the cairo_surface_t* that it wraps, which essencially means it holds a
// strong reference to aSurface since aSurface shares its
// cairo_surface_t*'s reference count variable. As a result we can't cache
// srcBuffer on aSurface (see below) since aSurface would then hold a
// strong reference back to srcBuffer, creating a reference loop and a
// memory leak. Not caching is fine since wrapping is cheap enough (no
// copying) so we can just wrap again next time we're called.
return aTarget->CreateSourceSurfaceFromNativeSurface(surf);
}
RefPtr<SourceSurface> srcBuffer;
#ifdef XP_WIN
if (aSurface->GetType() == gfxSurfaceType::D2D &&
format != SurfaceFormat::A8) {
NativeSurface surf;
surf.mFormat = format;
surf.mType = NativeSurfaceType::D3D10_TEXTURE;
surf.mSurface = static_cast<gfxD2DSurface*>(aSurface)->GetTexture();
surf.mSize = ToIntSize(aSurface->GetSize());
mozilla::gfx::DrawTarget *dt = static_cast<mozilla::gfx::DrawTarget*>(aSurface->GetData(&kDrawTarget));
if (dt) {
dt->Flush();
}
srcBuffer = aTarget->CreateSourceSurfaceFromNativeSurface(surf);
}
#endif
// Currently no other DrawTarget types implement CreateSourceSurfaceFromNativeSurface
if (!srcBuffer) {
// If aSurface wraps data, we can create a SourceSurfaceRawData that wraps
// the same data, then optimize it for aTarget:
RefPtr<DataSourceSurface> surf = GetWrappedDataSourceSurface(aSurface);
if (surf) {
srcBuffer = aTarget->OptimizeSourceSurface(surf);
if (srcBuffer == surf) {
// GetWrappedDataSourceSurface returns a SourceSurface that holds a
// strong reference to aSurface since it wraps aSurface's data and
// needs it to stay alive. As a result we can't cache srcBuffer on
// aSurface (below) since aSurface would then hold a strong reference
// back to srcBuffer, creating a reference loop and a memory leak. Not
// caching is fine since wrapping is cheap enough (no copying) so we
// can just wrap again next time we're called.
//
// Note that the check below doesn't catch this since srcBuffer will be a
// SourceSurfaceRawData object (even if aSurface is not a gfxImageSurface
// object), which is why we need this separate check.
return srcBuffer.forget();
}
}
}
if (!srcBuffer) {
MOZ_ASSERT(aTarget->GetBackendType() != BackendType::CAIRO,
"We already tried CreateSourceSurfaceFromNativeSurface with a "
"DrawTargetCairo above");
// We've run out of performant options. We now try creating a SourceSurface
// using a temporary DrawTargetCairo and then optimizing it to aTarget's
// actual type. The CreateSourceSurfaceFromNativeSurface() call will
// likely create a DataSourceSurface (possibly involving copying and/or
// readback), and the OptimizeSourceSurface may well copy again and upload
// to the GPU. So, while this code path is rarely hit, hitting it may be
// very slow.
NativeSurface surf;
surf.mFormat = format;
surf.mType = NativeSurfaceType::CAIRO_SURFACE;
surf.mSurface = aSurface->CairoSurface();
surf.mSize = ToIntSize(aSurface->GetSize());
RefPtr<DrawTarget> drawTarget =
Factory::CreateDrawTarget(BackendType::CAIRO, IntSize(1, 1), format);
srcBuffer = drawTarget->CreateSourceSurfaceFromNativeSurface(surf);
if (srcBuffer) {
srcBuffer = aTarget->OptimizeSourceSurface(srcBuffer);
}
}
if (!srcBuffer) {
return nullptr;
}
if ((srcBuffer->GetType() == SurfaceType::CAIRO &&
static_cast<SourceSurfaceCairo*>(srcBuffer.get())->GetSurface() ==
aSurface->CairoSurface()) ||
(srcBuffer->GetType() == SurfaceType::CAIRO_IMAGE &&
static_cast<DataSourceSurfaceCairo*>(srcBuffer.get())->GetSurface() ==
aSurface->CairoSurface())) {
// See the "Note that the returned SourceSurfaceCairo..." comment above.
return srcBuffer.forget();
}
// Add user data to aSurface so we can cache lookups in the future.
SourceSurfaceUserData *srcSurfUD = new SourceSurfaceUserData;
srcSurfUD->mBackendType = aTarget->GetBackendType();
srcSurfUD->mSrcSurface = srcBuffer;
aSurface->SetData(&kSourceSurface, srcSurfUD, SourceBufferDestroy);
return srcBuffer.forget();
}
TemporaryRef<DataSourceSurface>
gfxPlatform::GetWrappedDataSourceSurface(gfxASurface* aSurface)
{
nsRefPtr<gfxImageSurface> image = aSurface->GetAsImageSurface();
if (!image) {
return nullptr;
}
RefPtr<DataSourceSurface> result =
Factory::CreateWrappingDataSourceSurface(image->Data(),
image->Stride(),
ToIntSize(image->GetSize()),
ImageFormatToSurfaceFormat(image->Format()));
if (!result) {
return nullptr;
}
// If we wrapped the underlying data of aSurface, then we need to add user data
// to make sure aSurface stays alive until we are done with the data.
DependentSourceSurfaceUserData *srcSurfUD = new DependentSourceSurfaceUserData;
srcSurfUD->mSurface = aSurface;
result->AddUserData(&kThebesSurface, srcSurfUD, SourceSurfaceDestroyed);
return result.forget();
}
TemporaryRef<ScaledFont>
gfxPlatform::GetScaledFontForFont(DrawTarget* aTarget, gfxFont *aFont)
{
NativeFont nativeFont;
nativeFont.mType = NativeFontType::CAIRO_FONT_FACE;
nativeFont.mFont = aFont->GetCairoScaledFont();
RefPtr<ScaledFont> scaledFont =
Factory::CreateScaledFontForNativeFont(nativeFont,
aFont->GetAdjustedSize());
return scaledFont;
}
bool
gfxPlatform::SupportsAzureContentForDrawTarget(DrawTarget* aTarget)
{
if (!aTarget) {
return false;
}
return SupportsAzureContentForType(aTarget->GetBackendType());
}
bool
gfxPlatform::UseAcceleratedSkiaCanvas()
{
return gfxPrefs::CanvasAzureAccelerated() &&
mPreferredCanvasBackend == BackendType::SKIA;
}
void
gfxPlatform::InitializeSkiaCacheLimits()
{
if (UseAcceleratedSkiaCanvas()) {
bool usingDynamicCache = gfxPrefs::CanvasSkiaGLDynamicCache();
int cacheItemLimit = gfxPrefs::CanvasSkiaGLCacheItems();
int cacheSizeLimit = gfxPrefs::CanvasSkiaGLCacheSize();
// Prefs are in megabytes, but we want the sizes in bytes
cacheSizeLimit *= 1024*1024;
if (usingDynamicCache) {
uint32_t totalMemory = mozilla::hal::GetTotalSystemMemory();
if (totalMemory < 512*1024*1024) {
// We need a very minimal cache on anything smaller than 512mb.
// Note the large jump as we cross 512mb (from 2mb to 32mb).
cacheSizeLimit = 2*1024*1024;
} else if (totalMemory > 0) {
cacheSizeLimit = totalMemory / 16;
}
}
#ifdef DEBUG
printf_stderr("Determined SkiaGL cache limits: Size %i, Items: %i\n", cacheSizeLimit, cacheItemLimit);
#endif
#ifdef USE_SKIA_GPU
mSkiaGlue->GetGrContext()->setTextureCacheLimits(cacheItemLimit, cacheSizeLimit);
#endif
}
}
mozilla::gl::SkiaGLGlue*
gfxPlatform::GetSkiaGLGlue()
{
#ifdef USE_SKIA_GPU
if (!mSkiaGlue) {
/* Dummy context. We always draw into a FBO.
*
* FIXME: This should be stored in TLS or something, since there needs to be one for each thread using it. As it
* stands, this only works on the main thread.
*/
mozilla::gl::SurfaceCaps caps = mozilla::gl::SurfaceCaps::ForRGBA();
nsRefPtr<mozilla::gl::GLContext> glContext = mozilla::gl::GLContextProvider::CreateOffscreen(gfxIntSize(16, 16), caps);
if (!glContext) {
printf_stderr("Failed to create GLContext for SkiaGL!\n");
return nullptr;
}
mSkiaGlue = new mozilla::gl::SkiaGLGlue(glContext);
MOZ_ASSERT(mSkiaGlue->GetGrContext(), "No GrContext");
InitializeSkiaCacheLimits();
}
#endif
return mSkiaGlue;
}
void
gfxPlatform::PurgeSkiaCache()
{
#ifdef USE_SKIA_GPU
if (!mSkiaGlue)
return;
mSkiaGlue->GetGrContext()->freeGpuResources();
#endif
}
TemporaryRef<DrawTarget>
gfxPlatform::CreateDrawTargetForBackend(BackendType aBackend, const IntSize& aSize, SurfaceFormat aFormat)
{
// There is a bunch of knowledge in the gfxPlatform heirarchy about how to
// create the best offscreen surface for the current system and situation. We
// can easily take advantage of this for the Cairo backend, so that's what we
// do.
// mozilla::gfx::Factory can get away without having all this knowledge for
// now, but this might need to change in the future (using
// CreateOffscreenSurface() and CreateDrawTargetForSurface() for all
// backends).
if (aBackend == BackendType::CAIRO) {
nsRefPtr<gfxASurface> surf = CreateOffscreenSurface(aSize,
ContentForFormat(aFormat));
if (!surf || surf->CairoStatus()) {
return nullptr;
}
return CreateDrawTargetForSurface(surf, aSize);
} else {
return Factory::CreateDrawTarget(aBackend, aSize, aFormat);
}
}
TemporaryRef<DrawTarget>
gfxPlatform::CreateOffscreenCanvasDrawTarget(const IntSize& aSize, SurfaceFormat aFormat)
{
NS_ASSERTION(mPreferredCanvasBackend != BackendType::NONE, "No backend.");
RefPtr<DrawTarget> target = CreateDrawTargetForBackend(mPreferredCanvasBackend, aSize, aFormat);
if (target ||
mFallbackCanvasBackend == BackendType::NONE) {
return target.forget();
}
return CreateDrawTargetForBackend(mFallbackCanvasBackend, aSize, aFormat);
}
TemporaryRef<DrawTarget>
gfxPlatform::CreateOffscreenContentDrawTarget(const IntSize& aSize, SurfaceFormat aFormat)
{
NS_ASSERTION(mPreferredCanvasBackend != BackendType::NONE, "No backend.");
return CreateDrawTargetForBackend(mContentBackend, aSize, aFormat);
}
TemporaryRef<DrawTarget>
gfxPlatform::CreateDrawTargetForData(unsigned char* aData, const IntSize& aSize, int32_t aStride, SurfaceFormat aFormat)
{
NS_ASSERTION(mContentBackend != BackendType::NONE, "No backend.");
RefPtr<DrawTarget> dt = Factory::CreateDrawTargetForData(mContentBackend,
aData, aSize,
aStride, aFormat);
if (!dt) {
// Factory::CreateDrawTargetForData does not support mContentBackend; retry
// with BackendType::CAIRO:
dt = Factory::CreateDrawTargetForData(BackendType::CAIRO,
aData, aSize,
aStride, aFormat);
}
return dt.forget();
}
/* static */ BackendType
gfxPlatform::BackendTypeForName(const nsCString& aName)
{
if (aName.EqualsLiteral("cairo"))
return BackendType::CAIRO;
if (aName.EqualsLiteral("skia"))
return BackendType::SKIA;
if (aName.EqualsLiteral("direct2d"))
return BackendType::DIRECT2D;
if (aName.EqualsLiteral("cg"))
return BackendType::COREGRAPHICS;
return BackendType::NONE;
}
nsresult
gfxPlatform::GetFontList(nsIAtom *aLangGroup,
const nsACString& aGenericFamily,
nsTArray<nsString>& aListOfFonts)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
nsresult
gfxPlatform::UpdateFontList()
{
return NS_ERROR_NOT_IMPLEMENTED;
}
bool
gfxPlatform::DownloadableFontsEnabled()
{
if (mAllowDownloadableFonts == UNINITIALIZED_VALUE) {
mAllowDownloadableFonts =
Preferences::GetBool(GFX_DOWNLOADABLE_FONTS_ENABLED, false);
}
return mAllowDownloadableFonts;
}
bool
gfxPlatform::UseCmapsDuringSystemFallback()
{
if (mFallbackUsesCmaps == UNINITIALIZED_VALUE) {
mFallbackUsesCmaps =
Preferences::GetBool(GFX_PREF_FALLBACK_USE_CMAPS, false);
}
return mFallbackUsesCmaps;
}
bool
gfxPlatform::OpenTypeSVGEnabled()
{
if (mOpenTypeSVGEnabled == UNINITIALIZED_VALUE) {
mOpenTypeSVGEnabled =
Preferences::GetBool(GFX_PREF_OPENTYPE_SVG, false);
}
return mOpenTypeSVGEnabled > 0;
}
uint32_t
gfxPlatform::WordCacheCharLimit()
{
if (mWordCacheCharLimit == UNINITIALIZED_VALUE) {
mWordCacheCharLimit =
Preferences::GetInt(GFX_PREF_WORD_CACHE_CHARLIMIT, 32);
if (mWordCacheCharLimit < 0) {
mWordCacheCharLimit = 32;
}
}
return uint32_t(mWordCacheCharLimit);
}
uint32_t
gfxPlatform::WordCacheMaxEntries()
{
if (mWordCacheMaxEntries == UNINITIALIZED_VALUE) {
mWordCacheMaxEntries =
Preferences::GetInt(GFX_PREF_WORD_CACHE_MAXENTRIES, 10000);
if (mWordCacheMaxEntries < 0) {
mWordCacheMaxEntries = 10000;
}
}
return uint32_t(mWordCacheMaxEntries);
}
bool
gfxPlatform::UseGraphiteShaping()
{
if (mGraphiteShapingEnabled == UNINITIALIZED_VALUE) {
mGraphiteShapingEnabled =
Preferences::GetBool(GFX_PREF_GRAPHITE_SHAPING, false);
}
return mGraphiteShapingEnabled;
}
gfxFontEntry*
gfxPlatform::MakePlatformFont(const gfxProxyFontEntry *aProxyEntry,
const uint8_t *aFontData,
uint32_t aLength)
{
// Default implementation does not handle activating downloaded fonts;
// just free the data and return.
// Platforms that support @font-face must override this,
// using the data to instantiate the font, and taking responsibility
// for freeing it when no longer required.
if (aFontData) {
NS_Free((void*)aFontData);
}
return nullptr;
}
static void
AppendGenericFontFromPref(nsString& aFonts, nsIAtom *aLangGroup, const char *aGenericName)
{
NS_ENSURE_TRUE_VOID(Preferences::GetRootBranch());
nsAutoCString prefName, langGroupString;
aLangGroup->ToUTF8String(langGroupString);
nsAutoCString genericDotLang;
if (aGenericName) {
genericDotLang.Assign(aGenericName);
} else {
prefName.AssignLiteral("font.default.");
prefName.Append(langGroupString);
genericDotLang = Preferences::GetCString(prefName.get());
}
genericDotLang.Append('.');
genericDotLang.Append(langGroupString);
// fetch font.name.xxx value
prefName.AssignLiteral("font.name.");
prefName.Append(genericDotLang);
nsAdoptingString nameValue = Preferences::GetString(prefName.get());
if (nameValue) {
if (!aFonts.IsEmpty())
aFonts.AppendLiteral(", ");
aFonts += nameValue;
}
// fetch font.name-list.xxx value
prefName.AssignLiteral("font.name-list.");
prefName.Append(genericDotLang);
nsAdoptingString nameListValue = Preferences::GetString(prefName.get());
if (nameListValue && !nameListValue.Equals(nameValue)) {
if (!aFonts.IsEmpty())
aFonts.AppendLiteral(", ");
aFonts += nameListValue;
}
}
void
gfxPlatform::GetPrefFonts(nsIAtom *aLanguage, nsString& aFonts, bool aAppendUnicode)
{
aFonts.Truncate();
AppendGenericFontFromPref(aFonts, aLanguage, nullptr);
if (aAppendUnicode)
AppendGenericFontFromPref(aFonts, nsGkAtoms::Unicode, nullptr);
}
bool gfxPlatform::ForEachPrefFont(eFontPrefLang aLangArray[], uint32_t aLangArrayLen, PrefFontCallback aCallback,
void *aClosure)
{
NS_ENSURE_TRUE(Preferences::GetRootBranch(), false);
uint32_t i;
for (i = 0; i < aLangArrayLen; i++) {
eFontPrefLang prefLang = aLangArray[i];
const char *langGroup = GetPrefLangName(prefLang);
nsAutoCString prefName;
prefName.AssignLiteral("font.default.");
prefName.Append(langGroup);
nsAdoptingCString genericDotLang = Preferences::GetCString(prefName.get());
genericDotLang.Append('.');
genericDotLang.Append(langGroup);
// fetch font.name.xxx value
prefName.AssignLiteral("font.name.");
prefName.Append(genericDotLang);
nsAdoptingCString nameValue = Preferences::GetCString(prefName.get());
if (nameValue) {
if (!aCallback(prefLang, NS_ConvertUTF8toUTF16(nameValue), aClosure))
return false;
}
// fetch font.name-list.xxx value
prefName.AssignLiteral("font.name-list.");
prefName.Append(genericDotLang);
nsAdoptingCString nameListValue = Preferences::GetCString(prefName.get());
if (nameListValue && !nameListValue.Equals(nameValue)) {
const char kComma = ',';
const char *p, *p_end;
nsAutoCString list(nameListValue);
list.BeginReading(p);
list.EndReading(p_end);
while (p < p_end) {
while (nsCRT::IsAsciiSpace(*p)) {
if (++p == p_end)
break;
}
if (p == p_end)
break;
const char *start = p;
while (++p != p_end && *p != kComma)
/* nothing */ ;
nsAutoCString fontName(Substring(start, p));
fontName.CompressWhitespace(false, true);
if (!aCallback(prefLang, NS_ConvertUTF8toUTF16(fontName), aClosure))
return false;
p++;
}
}
}
return true;
}
eFontPrefLang
gfxPlatform::GetFontPrefLangFor(const char* aLang)
{
if (!aLang || !aLang[0]) {
return eFontPrefLang_Others;
}
for (uint32_t i = 0; i < ArrayLength(gPrefLangNames); ++i) {
if (!PL_strcasecmp(gPrefLangNames[i], aLang)) {
return eFontPrefLang(i);
}
}
return eFontPrefLang_Others;
}
eFontPrefLang
gfxPlatform::GetFontPrefLangFor(nsIAtom *aLang)
{
if (!aLang)
return eFontPrefLang_Others;
nsAutoCString lang;
aLang->ToUTF8String(lang);
return GetFontPrefLangFor(lang.get());
}
const char*
gfxPlatform::GetPrefLangName(eFontPrefLang aLang)
{
if (uint32_t(aLang) < ArrayLength(gPrefLangNames)) {
return gPrefLangNames[uint32_t(aLang)];
}
return nullptr;
}
eFontPrefLang
gfxPlatform::GetFontPrefLangFor(uint8_t aUnicodeRange)
{
switch (aUnicodeRange) {
case kRangeSetLatin: return eFontPrefLang_Western;
case kRangeCyrillic: return eFontPrefLang_Cyrillic;
case kRangeGreek: return eFontPrefLang_Greek;
case kRangeHebrew: return eFontPrefLang_Hebrew;
case kRangeArabic: return eFontPrefLang_Arabic;
case kRangeThai: return eFontPrefLang_Thai;
case kRangeKorean: return eFontPrefLang_Korean;
case kRangeJapanese: return eFontPrefLang_Japanese;
case kRangeSChinese: return eFontPrefLang_ChineseCN;
case kRangeTChinese: return eFontPrefLang_ChineseTW;
case kRangeDevanagari: return eFontPrefLang_Devanagari;
case kRangeTamil: return eFontPrefLang_Tamil;
case kRangeArmenian: return eFontPrefLang_Armenian;
case kRangeBengali: return eFontPrefLang_Bengali;
case kRangeCanadian: return eFontPrefLang_Canadian;
case kRangeEthiopic: return eFontPrefLang_Ethiopic;
case kRangeGeorgian: return eFontPrefLang_Georgian;
case kRangeGujarati: return eFontPrefLang_Gujarati;
case kRangeGurmukhi: return eFontPrefLang_Gurmukhi;
case kRangeKhmer: return eFontPrefLang_Khmer;
case kRangeMalayalam: return eFontPrefLang_Malayalam;
case kRangeOriya: return eFontPrefLang_Oriya;
case kRangeTelugu: return eFontPrefLang_Telugu;
case kRangeKannada: return eFontPrefLang_Kannada;
case kRangeSinhala: return eFontPrefLang_Sinhala;
case kRangeTibetan: return eFontPrefLang_Tibetan;
case kRangeSetCJK: return eFontPrefLang_CJKSet;
default: return eFontPrefLang_Others;
}
}
bool
gfxPlatform::IsLangCJK(eFontPrefLang aLang)
{
switch (aLang) {
case eFontPrefLang_Japanese:
case eFontPrefLang_ChineseTW:
case eFontPrefLang_ChineseCN:
case eFontPrefLang_ChineseHK:
case eFontPrefLang_Korean:
case eFontPrefLang_CJKSet:
return true;
default:
return false;
}
}
mozilla::layers::DiagnosticTypes
gfxPlatform::GetLayerDiagnosticTypes()
{
mozilla::layers::DiagnosticTypes type = DiagnosticTypes::NO_DIAGNOSTIC;
if (gfxPrefs::DrawLayerBorders()) {
type |= mozilla::layers::DiagnosticTypes::LAYER_BORDERS;
}
if (gfxPrefs::DrawTileBorders()) {
type |= mozilla::layers::DiagnosticTypes::TILE_BORDERS;
}
if (gfxPrefs::DrawBigImageBorders()) {
type |= mozilla::layers::DiagnosticTypes::BIGIMAGE_BORDERS;
}
if (gfxPrefs::FlashLayerBorders()) {
type |= mozilla::layers::DiagnosticTypes::FLASH_BORDERS;
}
return type;
}
void
gfxPlatform::GetLangPrefs(eFontPrefLang aPrefLangs[], uint32_t &aLen, eFontPrefLang aCharLang, eFontPrefLang aPageLang)
{
if (IsLangCJK(aCharLang)) {
AppendCJKPrefLangs(aPrefLangs, aLen, aCharLang, aPageLang);
} else {
AppendPrefLang(aPrefLangs, aLen, aCharLang);
}
AppendPrefLang(aPrefLangs, aLen, eFontPrefLang_Others);
}
void
gfxPlatform::AppendCJKPrefLangs(eFontPrefLang aPrefLangs[], uint32_t &aLen, eFontPrefLang aCharLang, eFontPrefLang aPageLang)
{
// prefer the lang specified by the page *if* CJK
if (IsLangCJK(aPageLang)) {
AppendPrefLang(aPrefLangs, aLen, aPageLang);
}
// if not set up, set up the default CJK order, based on accept lang settings and locale
if (mCJKPrefLangs.Length() == 0) {
// temp array
eFontPrefLang tempPrefLangs[kMaxLenPrefLangList];
uint32_t tempLen = 0;
// Add the CJK pref fonts from accept languages, the order should be same order
nsAdoptingCString list = Preferences::GetLocalizedCString("intl.accept_languages");
if (!list.IsEmpty()) {
const char kComma = ',';
const char *p, *p_end;
list.BeginReading(p);
list.EndReading(p_end);
while (p < p_end) {
while (nsCRT::IsAsciiSpace(*p)) {
if (++p == p_end)
break;
}
if (p == p_end)
break;
const char *start = p;
while (++p != p_end && *p != kComma)
/* nothing */ ;
nsAutoCString lang(Substring(start, p));
lang.CompressWhitespace(false, true);
eFontPrefLang fpl = gfxPlatform::GetFontPrefLangFor(lang.get());
switch (fpl) {
case eFontPrefLang_Japanese:
case eFontPrefLang_Korean:
case eFontPrefLang_ChineseCN:
case eFontPrefLang_ChineseHK:
case eFontPrefLang_ChineseTW:
AppendPrefLang(tempPrefLangs, tempLen, fpl);
break;
default:
break;
}
p++;
}
}
do { // to allow 'break' to abort this block if a call fails
nsresult rv;
nsCOMPtr<nsILocaleService> ls =
do_GetService(NS_LOCALESERVICE_CONTRACTID, &rv);
if (NS_FAILED(rv))
break;
nsCOMPtr<nsILocale> appLocale;
rv = ls->GetApplicationLocale(getter_AddRefs(appLocale));
if (NS_FAILED(rv))
break;
nsString localeStr;
rv = appLocale->
GetCategory(NS_LITERAL_STRING(NSILOCALE_MESSAGE), localeStr);
if (NS_FAILED(rv))
break;
const nsAString& lang = Substring(localeStr, 0, 2);
if (lang.EqualsLiteral("ja")) {
AppendPrefLang(tempPrefLangs, tempLen, eFontPrefLang_Japanese);
} else if (lang.EqualsLiteral("zh")) {
const nsAString& region = Substring(localeStr, 3, 2);
if (region.EqualsLiteral("CN")) {
AppendPrefLang(tempPrefLangs, tempLen, eFontPrefLang_ChineseCN);
} else if (region.EqualsLiteral("TW")) {
AppendPrefLang(tempPrefLangs, tempLen, eFontPrefLang_ChineseTW);
} else if (region.EqualsLiteral("HK")) {
AppendPrefLang(tempPrefLangs, tempLen, eFontPrefLang_ChineseHK);
}
} else if (lang.EqualsLiteral("ko")) {
AppendPrefLang(tempPrefLangs, tempLen, eFontPrefLang_Korean);
}
} while (0);
// last resort... (the order is same as old gfx.)
AppendPrefLang(tempPrefLangs, tempLen, eFontPrefLang_Japanese);
AppendPrefLang(tempPrefLangs, tempLen, eFontPrefLang_Korean);
AppendPrefLang(tempPrefLangs, tempLen, eFontPrefLang_ChineseCN);
AppendPrefLang(tempPrefLangs, tempLen, eFontPrefLang_ChineseHK);
AppendPrefLang(tempPrefLangs, tempLen, eFontPrefLang_ChineseTW);
// copy into the cached array
uint32_t j;
for (j = 0; j < tempLen; j++) {
mCJKPrefLangs.AppendElement(tempPrefLangs[j]);
}
}
// append in cached CJK langs
uint32_t i, numCJKlangs = mCJKPrefLangs.Length();
for (i = 0; i < numCJKlangs; i++) {
AppendPrefLang(aPrefLangs, aLen, (eFontPrefLang) (mCJKPrefLangs[i]));
}
}
void
gfxPlatform::AppendPrefLang(eFontPrefLang aPrefLangs[], uint32_t& aLen, eFontPrefLang aAddLang)
{
if (aLen >= kMaxLenPrefLangList) return;
// make sure
uint32_t i = 0;
while (i < aLen && aPrefLangs[i] != aAddLang) {
i++;
}
if (i == aLen) {
aPrefLangs[aLen] = aAddLang;
aLen++;
}
}
void
gfxPlatform::InitBackendPrefs(uint32_t aCanvasBitmask, BackendType aCanvasDefault,
uint32_t aContentBitmask, BackendType aContentDefault)
{
mPreferredCanvasBackend = GetCanvasBackendPref(aCanvasBitmask);
if (mPreferredCanvasBackend == BackendType::NONE) {
mPreferredCanvasBackend = aCanvasDefault;
}
mFallbackCanvasBackend =
GetCanvasBackendPref(aCanvasBitmask & ~BackendTypeBit(mPreferredCanvasBackend));
mContentBackendBitmask = aContentBitmask;
mContentBackend = GetContentBackendPref(mContentBackendBitmask);
if (mContentBackend == BackendType::NONE) {
mContentBackend = aContentDefault;
// mContentBackendBitmask is our canonical reference for supported
// backends so we need to add the default if we are using it and
// overriding the prefs.
mContentBackendBitmask |= BackendTypeBit(aContentDefault);
}
}
/* static */ BackendType
gfxPlatform::GetCanvasBackendPref(uint32_t aBackendBitmask)
{
return GetBackendPref("gfx.canvas.azure.backends", aBackendBitmask);
}
/* static */ BackendType
gfxPlatform::GetContentBackendPref(uint32_t &aBackendBitmask)
{
return GetBackendPref("gfx.content.azure.backends", aBackendBitmask);
}
/* static */ BackendType
gfxPlatform::GetBackendPref(const char* aBackendPrefName, uint32_t &aBackendBitmask)
{
nsTArray<nsCString> backendList;
nsCString prefString;
if (NS_SUCCEEDED(Preferences::GetCString(aBackendPrefName, &prefString))) {
ParseString(prefString, ',', backendList);
}
uint32_t allowedBackends = 0;
BackendType result = BackendType::NONE;
for (uint32_t i = 0; i < backendList.Length(); ++i) {
BackendType type = BackendTypeForName(backendList[i]);
if (BackendTypeBit(type) & aBackendBitmask) {
allowedBackends |= BackendTypeBit(type);
if (result == BackendType::NONE) {
result = type;
}
}
}
aBackendBitmask = allowedBackends;
return result;
}
bool
gfxPlatform::OffMainThreadCompositingEnabled()
{
return UsesOffMainThreadCompositing();
}
eCMSMode
gfxPlatform::GetCMSMode()
{
if (gCMSInitialized == false) {
gCMSInitialized = true;
int32_t mode = gfxPrefs::CMSMode();
if (mode >= 0 && mode < eCMSMode_AllCount) {
gCMSMode = static_cast<eCMSMode>(mode);
}
bool enableV4 = gfxPrefs::CMSEnableV4();
if (enableV4) {
qcms_enable_iccv4();
}
}
return gCMSMode;
}
int
gfxPlatform::GetRenderingIntent()
{
if (!gCMSIntentInitialized) {
gCMSIntentInitialized = true;
// gfxPrefs.h is using 0 as the default for the rendering
// intent preference, based on that being the value for
// QCMS_INTENT_DEFAULT. Assert here to catch if that ever
// changes and we can then figure out what to do about it.
MOZ_ASSERT(QCMS_INTENT_DEFAULT == 0);
/* Try to query the pref system for a rendering intent. */
int32_t pIntent = gfxPrefs::CMSRenderingIntent();
if ((pIntent >= QCMS_INTENT_MIN) && (pIntent <= QCMS_INTENT_MAX)) {
gCMSIntent = pIntent;
} else {
/* If the pref is out of range, use embedded profile. */
gCMSIntent = -1;
}
}
return gCMSIntent;
}
void
gfxPlatform::TransformPixel(const gfxRGBA& in, gfxRGBA& out, qcms_transform *transform)
{
if (transform) {
/* we want the bytes in RGB order */
#ifdef IS_LITTLE_ENDIAN
/* ABGR puts the bytes in |RGBA| order on little endian */
uint32_t packed = in.Packed(gfxRGBA::PACKED_ABGR);
qcms_transform_data(transform,
(uint8_t *)&packed, (uint8_t *)&packed,
1);
out.~gfxRGBA();
new (&out) gfxRGBA(packed, gfxRGBA::PACKED_ABGR);
#else
/* ARGB puts the bytes in |ARGB| order on big endian */
uint32_t packed = in.Packed(gfxRGBA::PACKED_ARGB);
/* add one to move past the alpha byte */
qcms_transform_data(transform,
(uint8_t *)&packed + 1, (uint8_t *)&packed + 1,
1);
out.~gfxRGBA();
new (&out) gfxRGBA(packed, gfxRGBA::PACKED_ARGB);
#endif
}
else if (&out != &in)
out = in;
}
void
gfxPlatform::GetPlatformCMSOutputProfile(void *&mem, size_t &size)
{
mem = nullptr;
size = 0;
}
void
gfxPlatform::GetCMSOutputProfileData(void *&mem, size_t &size)
{
nsAdoptingCString fname = Preferences::GetCString("gfx.color_management.display_profile");
if (!fname.IsEmpty()) {
qcms_data_from_path(fname, &mem, &size);
}
else {
gfxPlatform::GetPlatform()->GetPlatformCMSOutputProfile(mem, size);
}
}
void
gfxPlatform::CreateCMSOutputProfile()
{
if (!gCMSOutputProfile) {
/* Determine if we're using the internal override to force sRGB as
an output profile for reftests. See Bug 452125.
Note that we don't normally (outside of tests) set a
default value of this preference, which means nsIPrefBranch::GetBoolPref
will typically throw (and leave its out-param untouched).
*/
if (Preferences::GetBool(GFX_PREF_CMS_FORCE_SRGB, false)) {
gCMSOutputProfile = GetCMSsRGBProfile();
}
if (!gCMSOutputProfile) {
void* mem = nullptr;
size_t size = 0;
GetCMSOutputProfileData(mem, size);
if ((mem != nullptr) && (size > 0)) {
gCMSOutputProfile = qcms_profile_from_memory(mem, size);
free(mem);
}
}
/* Determine if the profile looks bogus. If so, close the profile
* and use sRGB instead. See bug 460629, */
if (gCMSOutputProfile && qcms_profile_is_bogus(gCMSOutputProfile)) {
NS_ASSERTION(gCMSOutputProfile != GetCMSsRGBProfile(),
"Builtin sRGB profile tagged as bogus!!!");
qcms_profile_release(gCMSOutputProfile);
gCMSOutputProfile = nullptr;
}
if (!gCMSOutputProfile) {
gCMSOutputProfile = GetCMSsRGBProfile();
}
/* Precache the LUT16 Interpolations for the output profile. See
bug 444661 for details. */
qcms_profile_precache_output_transform(gCMSOutputProfile);
}
}
qcms_profile *
gfxPlatform::GetCMSOutputProfile()
{
return gCMSOutputProfile;
}
qcms_profile *
gfxPlatform::GetCMSsRGBProfile()
{
if (!gCMSsRGBProfile) {
/* Create the profile using qcms. */
gCMSsRGBProfile = qcms_profile_sRGB();
}
return gCMSsRGBProfile;
}
qcms_transform *
gfxPlatform::GetCMSRGBTransform()
{
if (!gCMSRGBTransform) {
qcms_profile *inProfile, *outProfile;
outProfile = GetCMSOutputProfile();
inProfile = GetCMSsRGBProfile();
if (!inProfile || !outProfile)
return nullptr;
gCMSRGBTransform = qcms_transform_create(inProfile, QCMS_DATA_RGB_8,
outProfile, QCMS_DATA_RGB_8,
QCMS_INTENT_PERCEPTUAL);
}
return gCMSRGBTransform;
}
qcms_transform *
gfxPlatform::GetCMSInverseRGBTransform()
{
if (!gCMSInverseRGBTransform) {
qcms_profile *inProfile, *outProfile;
inProfile = GetCMSOutputProfile();
outProfile = GetCMSsRGBProfile();
if (!inProfile || !outProfile)
return nullptr;
gCMSInverseRGBTransform = qcms_transform_create(inProfile, QCMS_DATA_RGB_8,
outProfile, QCMS_DATA_RGB_8,
QCMS_INTENT_PERCEPTUAL);
}
return gCMSInverseRGBTransform;
}
qcms_transform *
gfxPlatform::GetCMSRGBATransform()
{
if (!gCMSRGBATransform) {
qcms_profile *inProfile, *outProfile;
outProfile = GetCMSOutputProfile();
inProfile = GetCMSsRGBProfile();
if (!inProfile || !outProfile)
return nullptr;
gCMSRGBATransform = qcms_transform_create(inProfile, QCMS_DATA_RGBA_8,
outProfile, QCMS_DATA_RGBA_8,
QCMS_INTENT_PERCEPTUAL);
}
return gCMSRGBATransform;
}
/* Shuts down various transforms and profiles for CMS. */
static void ShutdownCMS()
{
if (gCMSRGBTransform) {
qcms_transform_release(gCMSRGBTransform);
gCMSRGBTransform = nullptr;
}
if (gCMSInverseRGBTransform) {
qcms_transform_release(gCMSInverseRGBTransform);
gCMSInverseRGBTransform = nullptr;
}
if (gCMSRGBATransform) {
qcms_transform_release(gCMSRGBATransform);
gCMSRGBATransform = nullptr;
}
if (gCMSOutputProfile) {
qcms_profile_release(gCMSOutputProfile);
// handle the aliased case
if (gCMSsRGBProfile == gCMSOutputProfile)
gCMSsRGBProfile = nullptr;
gCMSOutputProfile = nullptr;
}
if (gCMSsRGBProfile) {
qcms_profile_release(gCMSsRGBProfile);
gCMSsRGBProfile = nullptr;
}
// Reset the state variables
gCMSIntent = -2;
gCMSMode = eCMSMode_Off;
gCMSInitialized = false;
}
// default SetupClusterBoundaries, based on Unicode properties;
// platform subclasses may override if they wish
void
gfxPlatform::SetupClusterBoundaries(gfxTextRun *aTextRun, const char16_t *aString)
{
if (aTextRun->GetFlags() & gfxTextRunFactory::TEXT_IS_8BIT) {
// 8-bit text doesn't have clusters.
// XXX is this true in all languages???
// behdad: don't think so. Czech for example IIRC has a
// 'ch' grapheme.
// jfkthame: but that's not expected to behave as a grapheme cluster
// for selection/editing/etc.
return;
}
aTextRun->SetupClusterBoundaries(0, aString, aTextRun->GetLength());
}
int32_t
gfxPlatform::GetBidiNumeralOption()
{
if (mBidiNumeralOption == UNINITIALIZED_VALUE) {
mBidiNumeralOption = Preferences::GetInt(BIDI_NUMERAL_PREF, 0);
}
return mBidiNumeralOption;
}
static void
FlushFontAndWordCaches()
{
gfxFontCache *fontCache = gfxFontCache::GetCache();
if (fontCache) {
fontCache->AgeAllGenerations();
fontCache->FlushShapedWordCaches();
}
}
void
gfxPlatform::FontsPrefsChanged(const char *aPref)
{
NS_ASSERTION(aPref != nullptr, "null preference");
if (!strcmp(GFX_DOWNLOADABLE_FONTS_ENABLED, aPref)) {
mAllowDownloadableFonts = UNINITIALIZED_VALUE;
} else if (!strcmp(GFX_PREF_FALLBACK_USE_CMAPS, aPref)) {
mFallbackUsesCmaps = UNINITIALIZED_VALUE;
} else if (!strcmp(GFX_PREF_WORD_CACHE_CHARLIMIT, aPref)) {
mWordCacheCharLimit = UNINITIALIZED_VALUE;
FlushFontAndWordCaches();
} else if (!strcmp(GFX_PREF_WORD_CACHE_MAXENTRIES, aPref)) {
mWordCacheMaxEntries = UNINITIALIZED_VALUE;
FlushFontAndWordCaches();
} else if (!strcmp(GFX_PREF_GRAPHITE_SHAPING, aPref)) {
mGraphiteShapingEnabled = UNINITIALIZED_VALUE;
FlushFontAndWordCaches();
} else if (!strcmp(BIDI_NUMERAL_PREF, aPref)) {
mBidiNumeralOption = UNINITIALIZED_VALUE;
} else if (!strcmp(GFX_PREF_OPENTYPE_SVG, aPref)) {
mOpenTypeSVGEnabled = UNINITIALIZED_VALUE;
gfxFontCache::GetCache()->AgeAllGenerations();
}
}
PRLogModuleInfo*
gfxPlatform::GetLog(eGfxLog aWhichLog)
{
// logs shared across gfx
#ifdef PR_LOGGING
static PRLogModuleInfo *sFontlistLog = nullptr;
static PRLogModuleInfo *sFontInitLog = nullptr;
static PRLogModuleInfo *sTextrunLog = nullptr;
static PRLogModuleInfo *sTextrunuiLog = nullptr;
static PRLogModuleInfo *sCmapDataLog = nullptr;
static PRLogModuleInfo *sTextPerfLog = nullptr;
// Assume that if one is initialized, all are initialized
if (!sFontlistLog) {
sFontlistLog = PR_NewLogModule("fontlist");
sFontInitLog = PR_NewLogModule("fontinit");
sTextrunLog = PR_NewLogModule("textrun");
sTextrunuiLog = PR_NewLogModule("textrunui");
sCmapDataLog = PR_NewLogModule("cmapdata");
sTextPerfLog = PR_NewLogModule("textperf");
}
switch (aWhichLog) {
case eGfxLog_fontlist:
return sFontlistLog;
break;
case eGfxLog_fontinit:
return sFontInitLog;
break;
case eGfxLog_textrun:
return sTextrunLog;
break;
case eGfxLog_textrunui:
return sTextrunuiLog;
break;
case eGfxLog_cmapdata:
return sCmapDataLog;
break;
case eGfxLog_textperf:
return sTextPerfLog;
break;
default:
break;
}
return nullptr;
#else
return nullptr;
#endif
}
int
gfxPlatform::GetScreenDepth() const
{
NS_WARNING("GetScreenDepth not implemented on this platform -- returning 0!");
return 0;
}
mozilla::gfx::SurfaceFormat
gfxPlatform::Optimal2DFormatForContent(gfxContentType aContent)
{
switch (aContent) {
case gfxContentType::COLOR:
switch (GetOffscreenFormat()) {
case gfxImageFormat::ARGB32:
return mozilla::gfx::SurfaceFormat::B8G8R8A8;
case gfxImageFormat::RGB24:
return mozilla::gfx::SurfaceFormat::B8G8R8X8;
case gfxImageFormat::RGB16_565:
return mozilla::gfx::SurfaceFormat::R5G6B5;
default:
NS_NOTREACHED("unknown gfxImageFormat for gfxContentType::COLOR");
return mozilla::gfx::SurfaceFormat::B8G8R8A8;
}
case gfxContentType::ALPHA:
return mozilla::gfx::SurfaceFormat::A8;
case gfxContentType::COLOR_ALPHA:
return mozilla::gfx::SurfaceFormat::B8G8R8A8;
default:
NS_NOTREACHED("unknown gfxContentType");
return mozilla::gfx::SurfaceFormat::B8G8R8A8;
}
}
gfxImageFormat
gfxPlatform::OptimalFormatForContent(gfxContentType aContent)
{
switch (aContent) {
case gfxContentType::COLOR:
return GetOffscreenFormat();
case gfxContentType::ALPHA:
return gfxImageFormat::A8;
case gfxContentType::COLOR_ALPHA:
return gfxImageFormat::ARGB32;
default:
NS_NOTREACHED("unknown gfxContentType");
return gfxImageFormat::ARGB32;
}
}
/**
* There are a number of layers acceleration (or layers in general) preferences
* that should be consistent for the lifetime of the application (bug 840967).
* As such, we will evaluate them all as soon as one of them is evaluated
* and remember the values. Changing these preferences during the run will
* not have any effect until we restart.
*/
static bool sLayersSupportsD3D9 = false;
static bool sLayersSupportsD3D11 = false;
static bool sBufferRotationCheckPref = true;
static bool sPrefBrowserTabsRemoteAutostart = false;
static bool sLayersAccelerationPrefsInitialized = false;
void
InitLayersAccelerationPrefs()
{
if (!sLayersAccelerationPrefsInitialized)
{
// If this is called for the first time on a non-main thread, we're screwed.
// At the moment there's no explicit guarantee that the main thread calls
// this before the compositor thread, but let's at least make the assumption
// explicit.
MOZ_ASSERT(NS_IsMainThread(), "can only initialize prefs on the main thread");
gfxPrefs::GetSingleton();
sPrefBrowserTabsRemoteAutostart = Preferences::GetBool("browser.tabs.remote.autostart", false);
#ifdef XP_WIN
if (gfxPrefs::LayersAccelerationForceEnabled()) {
sLayersSupportsD3D9 = true;
sLayersSupportsD3D11 = true;
} else {
nsCOMPtr<nsIGfxInfo> gfxInfo = do_GetService("@mozilla.org/gfx/info;1");
if (gfxInfo) {
int32_t status;
if (NS_SUCCEEDED(gfxInfo->GetFeatureStatus(nsIGfxInfo::FEATURE_DIRECT3D_9_LAYERS, &status))) {
if (status == nsIGfxInfo::FEATURE_STATUS_OK) {
sLayersSupportsD3D9 = true;
}
}
if (NS_SUCCEEDED(gfxInfo->GetFeatureStatus(nsIGfxInfo::FEATURE_DIRECT3D_11_LAYERS, &status))) {
if (status == nsIGfxInfo::FEATURE_STATUS_OK) {
sLayersSupportsD3D11 = true;
}
}
}
}
#endif
sLayersAccelerationPrefsInitialized = true;
}
}
bool
gfxPlatform::CanUseDirect3D9()
{
// this function is called from the compositor thread, so it is not
// safe to init the prefs etc. from here.
MOZ_ASSERT(sLayersAccelerationPrefsInitialized);
return sLayersSupportsD3D9;
}
bool
gfxPlatform::CanUseDirect3D11()
{
// this function is called from the compositor thread, so it is not
// safe to init the prefs etc. from here.
MOZ_ASSERT(sLayersAccelerationPrefsInitialized);
return sLayersSupportsD3D11;
}
bool
gfxPlatform::BufferRotationEnabled()
{
MutexAutoLock autoLock(*gGfxPlatformPrefsLock);
return sBufferRotationCheckPref && gfxPrefs::BufferRotationEnabled();
}
void
gfxPlatform::DisableBufferRotation()
{
MutexAutoLock autoLock(*gGfxPlatformPrefsLock);
sBufferRotationCheckPref = false;
}
TemporaryRef<ScaledFont>
gfxPlatform::GetScaledFontForFontWithCairoSkia(DrawTarget* aTarget, gfxFont* aFont)
{
NativeFont nativeFont;
if (aTarget->GetBackendType() == BackendType::CAIRO || aTarget->GetBackendType() == BackendType::SKIA) {
nativeFont.mType = NativeFontType::CAIRO_FONT_FACE;
nativeFont.mFont = aFont->GetCairoScaledFont();
return Factory::CreateScaledFontForNativeFont(nativeFont, aFont->GetAdjustedSize());
}
return nullptr;
}
/* static */ bool
gfxPlatform::UsesOffMainThreadCompositing()
{
InitLayersAccelerationPrefs();
static bool firstTime = true;
static bool result = false;
if (firstTime) {
result =
sPrefBrowserTabsRemoteAutostart ||
gfxPrefs::LayersOffMainThreadCompositionEnabled() ||
gfxPrefs::LayersOffMainThreadCompositionForceEnabled() ||
gfxPrefs::LayersOffMainThreadCompositionTestingEnabled();
#if defined(MOZ_WIDGET_GTK)
// Linux users who chose OpenGL are being grandfathered in to OMTC
result |= gfxPrefs::LayersAccelerationForceEnabled();
#if !defined(NIGHTLY_BUILD)
// Yeah, these two env vars do the same thing.
// I'm told that one of them is enabled on some test slaves config,
// so be slightly careful if you think you can remove one of them.
result &= PR_GetEnv("MOZ_USE_OMTC") || PR_GetEnv("MOZ_OMTC_ENABLED");
#endif
#endif
firstTime = false;
}
return result;
}
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