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gecko/gfx/thebes/gfxAndroidPlatform.cpp

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/* -*- 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/Preferences.h"
#include "gfxFT2FontList.h"
#include "gfxImageSurface.h"
#include "mozilla/dom/ContentChild.h"
#include "nsXULAppAPI.h"
#include "nsIScreen.h"
#include "nsIScreenManager.h"
#include "nsILocaleService.h"
#include "nsServiceManagerUtils.h"
#include "cairo.h"
#include "ft2build.h"
#include FT_FREETYPE_H
#include FT_MODULE_H
using namespace mozilla;
using namespace mozilla::dom;
using namespace mozilla::gfx;
static FT_Library gPlatformFTLibrary = nullptr;
class FreetypeReporter MOZ_FINAL : public nsIMemoryReporter
{
public:
NS_DECL_ISUPPORTS
FreetypeReporter()
{
#ifdef DEBUG
// There must be only one instance of this class, due to |sAmount|
// being static.
static bool hasRun = false;
MOZ_ASSERT(!hasRun);
hasRun = true;
#endif
}
MOZ_DEFINE_MALLOC_SIZE_OF_ON_ALLOC(MallocSizeOfOnAlloc)
MOZ_DEFINE_MALLOC_SIZE_OF_ON_FREE(MallocSizeOfOnFree)
static void* CountingAlloc(FT_Memory, long size)
{
void *p = malloc(size);
sAmount += MallocSizeOfOnAlloc(p);
return p;
}
static void CountingFree(FT_Memory, void* p)
{
sAmount -= MallocSizeOfOnFree(p);
free(p);
}
static void*
CountingRealloc(FT_Memory, long cur_size, long new_size, void* p)
{
sAmount -= MallocSizeOfOnFree(p);
void *pnew = realloc(p, new_size);
if (pnew) {
sAmount += MallocSizeOfOnAlloc(pnew);
} else {
// realloc failed; undo the decrement from above
sAmount += MallocSizeOfOnAlloc(p);
}
return pnew;
}
NS_IMETHOD CollectReports(nsIHandleReportCallback* aHandleReport,
nsISupports* aData)
{
return MOZ_COLLECT_REPORT(
"explicit/freetype", KIND_HEAP, UNITS_BYTES, sAmount,
"Memory used by Freetype.");
}
private:
static int64_t sAmount;
};
NS_IMPL_ISUPPORTS1(FreetypeReporter, nsIMemoryReporter)
int64_t FreetypeReporter::sAmount = 0;
static FT_MemoryRec_ sFreetypeMemoryRecord;
gfxAndroidPlatform::gfxAndroidPlatform()
{
// A custom allocator. It counts allocations, enabling memory reporting.
sFreetypeMemoryRecord.user = nullptr;
sFreetypeMemoryRecord.alloc = FreetypeReporter::CountingAlloc;
sFreetypeMemoryRecord.free = FreetypeReporter::CountingFree;
sFreetypeMemoryRecord.realloc = FreetypeReporter::CountingRealloc;
// 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);
RegisterStrongMemoryReporter(new FreetypeReporter());
nsCOMPtr<nsIScreenManager> screenMgr = do_GetService("@mozilla.org/gfx/screenmanager;1");
nsCOMPtr<nsIScreen> screen;
screenMgr->GetPrimaryScreen(getter_AddRefs(screen));
mScreenDepth = 24;
screen->GetColorDepth(&mScreenDepth);
mOffscreenFormat = mScreenDepth == 16
? gfxImageFormatRGB16_565
: gfxImageFormatRGB24;
if (Preferences::GetBool("gfx.android.rgb16.force", false)) {
mOffscreenFormat = gfxImageFormatRGB16_565;
}
}
gfxAndroidPlatform::~gfxAndroidPlatform()
{
cairo_debug_reset_static_data();
FT_Done_Library(gPlatformFTLibrary);
gPlatformFTLibrary = nullptr;
}
already_AddRefed<gfxASurface>
gfxAndroidPlatform::CreateOffscreenSurface(const gfxIntSize& size,
gfxContentType contentType)
{
nsRefPtr<gfxASurface> newSurface;
newSurface = new gfxImageSurface(size, OptimalFormatForContent(contentType));
return newSurface.forget();
}
already_AddRefed<gfxASurface>
gfxAndroidPlatform::OptimizeImage(gfxImageSurface *aSurface,
gfxImageFormat format)
{
/* Android/Gonk have no special offscreen surfaces so we can avoid a copy */
if (OptimalFormatForContent(gfxASurface::ContentFromFormat(format)) ==
format) {
return nullptr;
}
return gfxPlatform::OptimizeImage(aSurface, format);
}
static bool
IsJapaneseLocale()
{
static bool sInitialized = false;
static bool sIsJapanese = false;
if (!sInitialized) {
sInitialized = true;
do { // to allow 'break' to abandon 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 = nsDependentSubstring(localeStr, 0, 2);
if (lang.EqualsLiteral("ja")) {
sIsJapanese = true;
}
} while (false);
}
return sIsJapanese;
}
void
gfxAndroidPlatform::GetCommonFallbackFonts(const uint32_t aCh,
int32_t aRunScript,
nsTArray<const char*>& aFontList)
{
static const char kDroidSansJapanese[] = "Droid Sans Japanese";
static const char kMotoyaLMaru[] = "MotoyaLMaru";
if (IS_IN_BMP(aCh)) {
// try language-specific "Droid 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("Droid Sans Devanagari");
break;
case 0x0b:
aFontList.AppendElement("Droid Sans Tamil");
break;
case 0x0e:
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(kDroidSansJapanese);
}
break;
default:
if (block >= 0x2e && block <= 0x9f && IsJapaneseLocale()) {
aFontList.AppendElement(kMotoyaLMaru);
aFontList.AppendElement(kDroidSansJapanese);
}
break;
}
}
// and try Droid Sans Fallback as a last resort
aFontList.AppendElement("Droid Sans Fallback");
}
nsresult
gfxAndroidPlatform::GetFontList(nsIAtom *aLangGroup,
const nsACString& aGenericFamily,
nsTArray<nsString>& aListOfFonts)
{
gfxPlatformFontList::PlatformFontList()->GetFontList(aLangGroup,
aGenericFamily,
aListOfFonts);
return NS_OK;
}
void
gfxAndroidPlatform::GetFontList(InfallibleTArray<FontListEntry>* retValue)
{
gfxFT2FontList::PlatformFontList()->GetFontList(retValue);
}
nsresult
gfxAndroidPlatform::UpdateFontList()
{
gfxPlatformFontList::PlatformFontList()->UpdateFontList();
return NS_OK;
}
nsresult
gfxAndroidPlatform::ResolveFontName(const nsAString& aFontName,
FontResolverCallback aCallback,
void *aClosure,
bool& aAborted)
{
nsAutoString resolvedName;
if (!gfxPlatformFontList::PlatformFontList()->
ResolveFontName(aFontName, resolvedName)) {
aAborted = false;
return NS_OK;
}
aAborted = !(*aCallback)(resolvedName, aClosure);
return NS_OK;
}
nsresult
gfxAndroidPlatform::GetStandardFamilyName(const nsAString& aFontName, nsAString& aFamilyName)
{
gfxPlatformFontList::PlatformFontList()->GetStandardFamilyName(aFontName, aFamilyName);
return NS_OK;
}
gfxPlatformFontList*
gfxAndroidPlatform::CreatePlatformFontList()
{
gfxPlatformFontList* list = new gfxFT2FontList();
if (NS_SUCCEEDED(list->InitFontList())) {
return list;
}
gfxPlatformFontList::Shutdown();
return nullptr;
}
bool
gfxAndroidPlatform::IsFontFormatSupported(nsIURI *aFontURI, uint32_t aFormatFlags)
{
// check for strange format flags
NS_ASSERTION(!(aFormatFlags & gfxUserFontSet::FLAG_FORMAT_NOT_USED),
"strange font format hint set");
// accept supported formats
if (aFormatFlags & (gfxUserFontSet::FLAG_FORMAT_OPENTYPE |
gfxUserFontSet::FLAG_FORMAT_WOFF |
gfxUserFontSet::FLAG_FORMAT_TRUETYPE)) {
return true;
}
// reject all other formats, known and unknown
if (aFormatFlags != 0) {
return false;
}
// no format hint set, need to look at data
return true;
}
gfxFontGroup *
gfxAndroidPlatform::CreateFontGroup(const nsAString &aFamilies,
const gfxFontStyle *aStyle,
gfxUserFontSet* aUserFontSet)
{
return new gfxFontGroup(aFamilies, aStyle, aUserFontSet);
}
FT_Library
gfxAndroidPlatform::GetFTLibrary()
{
return gPlatformFTLibrary;
}
gfxFontEntry*
gfxAndroidPlatform::MakePlatformFont(const gfxProxyFontEntry *aProxyEntry,
const uint8_t *aFontData, uint32_t aLength)
{
return gfxPlatformFontList::PlatformFontList()->MakePlatformFont(aProxyEntry,
aFontData,
aLength);
}
TemporaryRef<ScaledFont>
gfxAndroidPlatform::GetScaledFontForFont(DrawTarget* aTarget, gfxFont *aFont)
{
NativeFont nativeFont;
if (aTarget->GetType() == BackendType::CAIRO || aTarget->GetType() == BackendType::SKIA) {
nativeFont.mType = NativeFontType::CAIRO_FONT_FACE;
nativeFont.mFont = aFont->GetCairoScaledFont();
return Factory::CreateScaledFontForNativeFont(nativeFont, aFont->GetAdjustedSize());
}
return nullptr;
}
bool
gfxAndroidPlatform::FontHintingEnabled()
{
// In "mobile" builds, we sometimes use non-reflow-zoom, so we
// might not want hinting. Let's see.
#ifdef MOZ_USING_ANDROID_JAVA_WIDGETS
// On android-java, 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_USING_ANDROID_JAVA_WIDGETS
#ifdef MOZ_WIDGET_GONK
// On B2G, the UX preference is currently to keep hinting disabled
// for all text (see bug 829523).
return false;
#endif
// Currently, we don't have any other targets, but if/when we do,
// decide how to handle them here.
NS_NOTREACHED("oops, what platform is this?");
return gfxPlatform::FontHintingEnabled();
}
bool
gfxAndroidPlatform::RequiresLinearZoom()
{
#ifdef MOZ_USING_ANDROID_JAVA_WIDGETS
// On android-java, 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 treat it like B2G and use linear zoom only for the web
// browser process, not other apps.
return true;
#endif
#ifdef MOZ_WIDGET_GONK
// On B2G, we need linear zoom for the browser, but otherwise prefer
// the improved glyph spacing that results from respecting the device
// pixel resolution for glyph layout (see bug 816614).
return XRE_GetProcessType() == GeckoProcessType_Content &&
ContentChild::GetSingleton()->IsForBrowser();
#endif
NS_NOTREACHED("oops, what platform is this?");
return gfxPlatform::RequiresLinearZoom();
}
int
gfxAndroidPlatform::GetScreenDepth() const
{
return mScreenDepth;
}
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