gecko-dev/gfx/thebes/gfxAndroidPlatform.cpp

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C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim: set ts=8 sts=4 et sw=4 tw=80: */
/* 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 "base/basictypes.h"
#include "gfxAndroidPlatform.h"
#include "mozilla/gfx/2D.h"
#include "mozilla/CountingAllocatorBase.h"
#include "mozilla/intl/LocaleService.h"
#include "mozilla/intl/OSPreferences.h"
#include "mozilla/Preferences.h"
#include "gfx2DGlue.h"
#include "gfxFT2FontList.h"
#include "gfxImageSurface.h"
#include "gfxTextRun.h"
#include "mozilla/dom/ContentChild.h"
#include "nsXULAppAPI.h"
#include "nsIScreen.h"
#include "nsIScreenManager.h"
#include "nsServiceManagerUtils.h"
#include "nsUnicodeProperties.h"
#include "gfxPrefs.h"
#include "cairo.h"
#include "VsyncSource.h"
#include "ft2build.h"
#include FT_FREETYPE_H
#include FT_MODULE_H
#include "GeneratedJNINatives.h"
using namespace mozilla;
using namespace mozilla::dom;
using namespace mozilla::gfx;
using namespace mozilla::unicode;
using mozilla::intl::LocaleService;
using mozilla::intl::OSPreferences;
static FT_Library gPlatformFTLibrary = nullptr;
class FreetypeReporter final : public nsIMemoryReporter,
public CountingAllocatorBase<FreetypeReporter>
{
private:
~FreetypeReporter() {}
public:
NS_DECL_ISUPPORTS
static void* Malloc(FT_Memory, long size)
{
return CountingMalloc(size);
}
static void Free(FT_Memory, void* p)
{
return CountingFree(p);
}
static void*
Realloc(FT_Memory, long cur_size, long new_size, void* p)
{
return CountingRealloc(p, new_size);
}
NS_IMETHOD CollectReports(nsIHandleReportCallback* aHandleReport,
nsISupports* aData, bool aAnonymize) override
{
MOZ_COLLECT_REPORT(
"explicit/freetype", KIND_HEAP, UNITS_BYTES, MemoryAllocated(),
"Memory used by Freetype.");
return NS_OK;
}
};
NS_IMPL_ISUPPORTS(FreetypeReporter, nsIMemoryReporter)
template<> CountingAllocatorBase<FreetypeReporter>::AmountType
CountingAllocatorBase<FreetypeReporter>::sAmount(0);
static FT_MemoryRec_ sFreetypeMemoryRecord;
gfxAndroidPlatform::gfxAndroidPlatform()
{
// A custom allocator. It counts allocations, enabling memory reporting.
sFreetypeMemoryRecord.user = nullptr;
sFreetypeMemoryRecord.alloc = FreetypeReporter::Malloc;
sFreetypeMemoryRecord.free = FreetypeReporter::Free;
sFreetypeMemoryRecord.realloc = FreetypeReporter::Realloc;
// These two calls are equivalent to FT_Init_FreeType(), but allow us to
// provide a custom memory allocator.
FT_New_Library(&sFreetypeMemoryRecord, &gPlatformFTLibrary);
FT_Add_Default_Modules(gPlatformFTLibrary);
Factory::SetFTLibrary(gPlatformFTLibrary);
RegisterStrongMemoryReporter(new FreetypeReporter());
mOffscreenFormat = GetScreenDepth() == 16
? SurfaceFormat::R5G6B5_UINT16
: SurfaceFormat::X8R8G8B8_UINT32;
if (gfxPrefs::AndroidRGB16Force()) {
mOffscreenFormat = SurfaceFormat::R5G6B5_UINT16;
}
}
gfxAndroidPlatform::~gfxAndroidPlatform()
{
FT_Done_Library(gPlatformFTLibrary);
gPlatformFTLibrary = nullptr;
}
already_AddRefed<gfxASurface>
gfxAndroidPlatform::CreateOffscreenSurface(const IntSize& aSize,
gfxImageFormat aFormat)
{
if (!Factory::AllowedSurfaceSize(aSize)) {
return nullptr;
}
RefPtr<gfxASurface> newSurface;
newSurface = new gfxImageSurface(aSize, aFormat);
return newSurface.forget();
}
static bool
IsJapaneseLocale()
{
static bool sInitialized = false;
static bool sIsJapanese = false;
if (!sInitialized) {
sInitialized = true;
nsAutoCString appLocale;
LocaleService::GetInstance()->GetAppLocaleAsLangTag(appLocale);
const nsDependentCSubstring lang(appLocale, 0, 2);
if (lang.EqualsLiteral("ja")) {
sIsJapanese = true;
} else {
OSPreferences::GetInstance()->GetSystemLocale(appLocale);
const nsDependentCSubstring lang(appLocale, 0, 2);
if (lang.EqualsLiteral("ja")) {
sIsJapanese = true;
}
}
}
return sIsJapanese;
}
void
gfxAndroidPlatform::GetCommonFallbackFonts(uint32_t aCh, uint32_t aNextCh,
Script aRunScript,
nsTArray<const char*>& aFontList)
{
static const char kDroidSansJapanese[] = "Droid Sans Japanese";
static const char kMotoyaLMaru[] = "MotoyaLMaru";
static const char kNotoSansCJKJP[] = "Noto Sans CJK JP";
static const char kNotoColorEmoji[] = "Noto Color Emoji";
EmojiPresentation emoji = GetEmojiPresentation(aCh);
if (emoji != EmojiPresentation::TextOnly) {
if (aNextCh == kVariationSelector16 ||
(aNextCh != kVariationSelector15 &&
emoji == EmojiPresentation::EmojiDefault)) {
// if char is followed by VS16, try for a color emoji glyph
aFontList.AppendElement(kNotoColorEmoji);
}
}
if (IS_IN_BMP(aCh)) {
// try language-specific "Droid Sans *" and "Noto Sans *" fonts for
// certain blocks, as most devices probably have these
uint8_t block = (aCh >> 8) & 0xff;
switch (block) {
case 0x05:
aFontList.AppendElement("Droid Sans Hebrew");
aFontList.AppendElement("Droid Sans Armenian");
break;
case 0x06:
aFontList.AppendElement("Droid Sans Arabic");
break;
case 0x09:
aFontList.AppendElement("Noto Sans Devanagari");
aFontList.AppendElement("Droid Sans Devanagari");
break;
case 0x0b:
aFontList.AppendElement("Noto Sans Tamil");
aFontList.AppendElement("Droid Sans Tamil");
break;
case 0x0e:
aFontList.AppendElement("Noto Sans Thai");
aFontList.AppendElement("Droid Sans Thai");
break;
case 0x10: case 0x2d:
aFontList.AppendElement("Droid Sans Georgian");
break;
case 0x12: case 0x13:
aFontList.AppendElement("Droid Sans Ethiopic");
break;
case 0xf9: case 0xfa:
if (IsJapaneseLocale()) {
aFontList.AppendElement(kMotoyaLMaru);
aFontList.AppendElement(kNotoSansCJKJP);
aFontList.AppendElement(kDroidSansJapanese);
}
break;
default:
if (block >= 0x2e && block <= 0x9f && IsJapaneseLocale()) {
aFontList.AppendElement(kMotoyaLMaru);
aFontList.AppendElement(kNotoSansCJKJP);
aFontList.AppendElement(kDroidSansJapanese);
}
break;
}
}
// and try Droid Sans Fallback as a last resort
aFontList.AppendElement("Droid Sans Fallback");
}
void
gfxAndroidPlatform::GetSystemFontList(InfallibleTArray<FontListEntry>* retValue)
{
gfxFT2FontList::PlatformFontList()->GetSystemFontList(retValue);
}
gfxPlatformFontList*
gfxAndroidPlatform::CreatePlatformFontList()
{
gfxPlatformFontList* list = new gfxFT2FontList();
if (NS_SUCCEEDED(list->InitFontList())) {
return list;
}
gfxPlatformFontList::Shutdown();
return nullptr;
}
gfxFontGroup *
gfxAndroidPlatform::CreateFontGroup(const FontFamilyList& aFontFamilyList,
const gfxFontStyle* aStyle,
gfxTextPerfMetrics* aTextPerf,
gfxUserFontSet* aUserFontSet,
gfxFloat aDevToCssSize)
{
return new gfxFontGroup(aFontFamilyList, aStyle, aTextPerf,
aUserFontSet, aDevToCssSize);
}
FT_Library
gfxAndroidPlatform::GetFTLibrary()
{
return gPlatformFTLibrary;
}
bool
gfxAndroidPlatform::FontHintingEnabled()
{
// In "mobile" builds, we sometimes use non-reflow-zoom, so we
// might not want hinting. Let's see.
#ifdef MOZ_WIDGET_ANDROID
// On Android, we currently only use gecko to render web
// content that can always be be non-reflow-zoomed. So turn off
// hinting.
//
// XXX when gecko-android-java is used as an "app runtime", we may
// want to re-enable hinting for non-browser processes there.
return false;
#endif // MOZ_WIDGET_ANDROID
// Currently, we don't have any other targets, but if/when we do,
// decide how to handle them here.
MOZ_ASSERT_UNREACHABLE("oops, what platform is this?");
return gfxPlatform::FontHintingEnabled();
}
bool
gfxAndroidPlatform::RequiresLinearZoom()
{
#ifdef MOZ_WIDGET_ANDROID
// On Android, we currently only use gecko to render web
// content that can always be be non-reflow-zoomed.
//
// XXX when gecko-android-java is used as an "app runtime", we may
// want to use linear zoom only for the web browser process, not other apps.
return true;
#endif
MOZ_ASSERT_UNREACHABLE("oops, what platform is this?");
return gfxPlatform::RequiresLinearZoom();
}
class AndroidVsyncSource final : public VsyncSource {
public:
class JavaVsyncSupport final : public java::VsyncSource::Natives<JavaVsyncSupport>
{
public:
using Base = java::VsyncSource::Natives<JavaVsyncSupport>;
using Base::DisposeNative;
static void NotifyVsync() {
GetDisplayInstance().NotifyVsync(TimeStamp::Now());
}
};
class Display final : public VsyncSource::Display {
public:
Display()
: mJavaVsync(java::VsyncSource::INSTANCE())
, mObservingVsync(false)
{
JavaVsyncSupport::Init(); // To register native methods.
}
~Display() { DisableVsync(); }
bool IsVsyncEnabled() override
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(mJavaVsync);
return mObservingVsync;
}
void EnableVsync() override
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(mJavaVsync);
if (mObservingVsync) {
return;
}
bool ok = mJavaVsync->ObserveVsync(true);
if (ok && !mVsyncDuration) {
float fps = mJavaVsync->GetRefreshRate();
mVsyncDuration = TimeDuration::FromMilliseconds(1000.0 / fps);
}
mObservingVsync = ok;
MOZ_ASSERT(mObservingVsync);
}
void DisableVsync() override
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(mJavaVsync);
if (!mObservingVsync) {
return;
}
mObservingVsync = mJavaVsync->ObserveVsync(false);
MOZ_ASSERT(!mObservingVsync);
}
TimeDuration GetVsyncRate() override { return mVsyncDuration; }
void Shutdown() override {
DisableVsync();
mJavaVsync = nullptr;
}
private:
java::VsyncSource::GlobalRef mJavaVsync;
bool mObservingVsync;
TimeDuration mVsyncDuration;
};
Display& GetGlobalDisplay() final { return GetDisplayInstance(); }
private:
virtual ~AndroidVsyncSource() {}
static Display& GetDisplayInstance()
{
static Display globalDisplay;
return globalDisplay;
}
};
already_AddRefed<mozilla::gfx::VsyncSource>
gfxAndroidPlatform::CreateHardwareVsyncSource()
{
// Vsync was introduced since JB (API 16~18) but inaccurate. Enable only for
// KK (API 19) and later.
if (AndroidBridge::Bridge() &&
AndroidBridge::Bridge()->GetAPIVersion() >= 19) {
RefPtr<AndroidVsyncSource> vsyncSource = new AndroidVsyncSource();
return vsyncSource.forget();
}
NS_WARNING("Vsync not supported. Falling back to software vsync");
return gfxPlatform::CreateHardwareVsyncSource();
}