michael@0: /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
michael@0: /* vim: set ts=8 sts=4 et sw=4 tw=80: */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "base/basictypes.h"
michael@0: 
michael@0: #include "gfxAndroidPlatform.h"
michael@0: #include "mozilla/gfx/2D.h"
michael@0: #include "mozilla/Preferences.h"
michael@0: 
michael@0: #include "gfx2DGlue.h"
michael@0: #include "gfxFT2FontList.h"
michael@0: #include "gfxImageSurface.h"
michael@0: #include "mozilla/dom/ContentChild.h"
michael@0: #include "nsXULAppAPI.h"
michael@0: #include "nsIScreen.h"
michael@0: #include "nsIScreenManager.h"
michael@0: #include "nsILocaleService.h"
michael@0: #include "nsServiceManagerUtils.h"
michael@0: #include "gfxPrefs.h"
michael@0: #include "cairo.h"
michael@0: 
michael@0: #ifdef MOZ_WIDGET_ANDROID
michael@0: #include "AndroidBridge.h"
michael@0: #endif
michael@0: 
michael@0: #ifdef MOZ_WIDGET_GONK
michael@0: #include <cutils/properties.h>
michael@0: #endif
michael@0: 
michael@0: #include "ft2build.h"
michael@0: #include FT_FREETYPE_H
michael@0: #include FT_MODULE_H
michael@0: 
michael@0: using namespace mozilla;
michael@0: using namespace mozilla::dom;
michael@0: using namespace mozilla::gfx;
michael@0: 
michael@0: static FT_Library gPlatformFTLibrary = nullptr;
michael@0: 
michael@0: class FreetypeReporter MOZ_FINAL : public nsIMemoryReporter,
michael@0:                                    public CountingAllocatorBase<FreetypeReporter>
michael@0: {
michael@0: public:
michael@0:     NS_DECL_ISUPPORTS
michael@0: 
michael@0:     static void* Malloc(FT_Memory, long size)
michael@0:     {
michael@0:         return CountingMalloc(size);
michael@0:     }
michael@0: 
michael@0:     static void Free(FT_Memory, void* p)
michael@0:     {
michael@0:         return CountingFree(p);
michael@0:     }
michael@0: 
michael@0:     static void*
michael@0:     Realloc(FT_Memory, long cur_size, long new_size, void* p)
michael@0:     {
michael@0:         return CountingRealloc(p, new_size);
michael@0:     }
michael@0: 
michael@0:     NS_IMETHOD CollectReports(nsIHandleReportCallback* aHandleReport,
michael@0:                               nsISupports* aData)
michael@0:     {
michael@0:         return MOZ_COLLECT_REPORT(
michael@0:             "explicit/freetype", KIND_HEAP, UNITS_BYTES, MemoryAllocated(),
michael@0:             "Memory used by Freetype.");
michael@0:     }
michael@0: };
michael@0: 
michael@0: NS_IMPL_ISUPPORTS(FreetypeReporter, nsIMemoryReporter)
michael@0: 
michael@0: template<> Atomic<size_t> CountingAllocatorBase<FreetypeReporter>::sAmount(0);
michael@0: 
michael@0: static FT_MemoryRec_ sFreetypeMemoryRecord;
michael@0: 
michael@0: gfxAndroidPlatform::gfxAndroidPlatform()
michael@0: {
michael@0:     // A custom allocator.  It counts allocations, enabling memory reporting.
michael@0:     sFreetypeMemoryRecord.user    = nullptr;
michael@0:     sFreetypeMemoryRecord.alloc   = FreetypeReporter::Malloc;
michael@0:     sFreetypeMemoryRecord.free    = FreetypeReporter::Free;
michael@0:     sFreetypeMemoryRecord.realloc = FreetypeReporter::Realloc;
michael@0: 
michael@0:     // These two calls are equivalent to FT_Init_FreeType(), but allow us to
michael@0:     // provide a custom memory allocator.
michael@0:     FT_New_Library(&sFreetypeMemoryRecord, &gPlatformFTLibrary);
michael@0:     FT_Add_Default_Modules(gPlatformFTLibrary);
michael@0: 
michael@0:     RegisterStrongMemoryReporter(new FreetypeReporter());
michael@0: 
michael@0:     nsCOMPtr<nsIScreenManager> screenMgr = do_GetService("@mozilla.org/gfx/screenmanager;1");
michael@0:     nsCOMPtr<nsIScreen> screen;
michael@0:     screenMgr->GetPrimaryScreen(getter_AddRefs(screen));
michael@0:     mScreenDepth = 24;
michael@0:     screen->GetColorDepth(&mScreenDepth);
michael@0: 
michael@0:     mOffscreenFormat = mScreenDepth == 16
michael@0:                        ? gfxImageFormat::RGB16_565
michael@0:                        : gfxImageFormat::RGB24;
michael@0: 
michael@0:     if (gfxPrefs::AndroidRGB16Force()) {
michael@0:         mOffscreenFormat = gfxImageFormat::RGB16_565;
michael@0:     }
michael@0: 
michael@0: #ifdef MOZ_WIDGET_GONK
michael@0:     char propQemu[PROPERTY_VALUE_MAX];
michael@0:     property_get("ro.kernel.qemu", propQemu, "");
michael@0:     mIsInGonkEmulator = !strncmp(propQemu, "1", 1);
michael@0: #endif
michael@0: }
michael@0: 
michael@0: gfxAndroidPlatform::~gfxAndroidPlatform()
michael@0: {
michael@0:     FT_Done_Library(gPlatformFTLibrary);
michael@0:     gPlatformFTLibrary = nullptr;
michael@0: }
michael@0: 
michael@0: already_AddRefed<gfxASurface>
michael@0: gfxAndroidPlatform::CreateOffscreenSurface(const IntSize& size,
michael@0:                                            gfxContentType contentType)
michael@0: {
michael@0:     nsRefPtr<gfxASurface> newSurface;
michael@0:     newSurface = new gfxImageSurface(ThebesIntSize(size),
michael@0:                                      OptimalFormatForContent(contentType));
michael@0: 
michael@0:     return newSurface.forget();
michael@0: }
michael@0: 
michael@0: static bool
michael@0: IsJapaneseLocale()
michael@0: {
michael@0:     static bool sInitialized = false;
michael@0:     static bool sIsJapanese = false;
michael@0: 
michael@0:     if (!sInitialized) {
michael@0:         sInitialized = true;
michael@0: 
michael@0:         do { // to allow 'break' to abandon this block if a call fails
michael@0:             nsresult rv;
michael@0:             nsCOMPtr<nsILocaleService> ls =
michael@0:                 do_GetService(NS_LOCALESERVICE_CONTRACTID, &rv);
michael@0:             if (NS_FAILED(rv)) {
michael@0:                 break;
michael@0:             }
michael@0:             nsCOMPtr<nsILocale> appLocale;
michael@0:             rv = ls->GetApplicationLocale(getter_AddRefs(appLocale));
michael@0:             if (NS_FAILED(rv)) {
michael@0:                 break;
michael@0:             }
michael@0:             nsString localeStr;
michael@0:             rv = appLocale->
michael@0:                 GetCategory(NS_LITERAL_STRING(NSILOCALE_MESSAGE), localeStr);
michael@0:             if (NS_FAILED(rv)) {
michael@0:                 break;
michael@0:             }
michael@0:             const nsAString& lang = nsDependentSubstring(localeStr, 0, 2);
michael@0:             if (lang.EqualsLiteral("ja")) {
michael@0:                 sIsJapanese = true;
michael@0:             }
michael@0:         } while (false);
michael@0:     }
michael@0: 
michael@0:     return sIsJapanese;
michael@0: }
michael@0: 
michael@0: void
michael@0: gfxAndroidPlatform::GetCommonFallbackFonts(const uint32_t aCh,
michael@0:                                            int32_t aRunScript,
michael@0:                                            nsTArray<const char*>& aFontList)
michael@0: {
michael@0:     static const char kDroidSansJapanese[] = "Droid Sans Japanese";
michael@0:     static const char kMotoyaLMaru[] = "MotoyaLMaru";
michael@0: 
michael@0:     if (IS_IN_BMP(aCh)) {
michael@0:         // try language-specific "Droid Sans *" fonts for certain blocks,
michael@0:         // as most devices probably have these
michael@0:         uint8_t block = (aCh >> 8) & 0xff;
michael@0:         switch (block) {
michael@0:         case 0x05:
michael@0:             aFontList.AppendElement("Droid Sans Hebrew");
michael@0:             aFontList.AppendElement("Droid Sans Armenian");
michael@0:             break;
michael@0:         case 0x06:
michael@0:             aFontList.AppendElement("Droid Sans Arabic");
michael@0:             break;
michael@0:         case 0x09:
michael@0:             aFontList.AppendElement("Droid Sans Devanagari");
michael@0:             break;
michael@0:         case 0x0b:
michael@0:             aFontList.AppendElement("Droid Sans Tamil");
michael@0:             break;
michael@0:         case 0x0e:
michael@0:             aFontList.AppendElement("Droid Sans Thai");
michael@0:             break;
michael@0:         case 0x10: case 0x2d:
michael@0:             aFontList.AppendElement("Droid Sans Georgian");
michael@0:             break;
michael@0:         case 0x12: case 0x13:
michael@0:             aFontList.AppendElement("Droid Sans Ethiopic");
michael@0:             break;
michael@0:         case 0xf9: case 0xfa:
michael@0:             if (IsJapaneseLocale()) {
michael@0:                 aFontList.AppendElement(kMotoyaLMaru);
michael@0:                 aFontList.AppendElement(kDroidSansJapanese);
michael@0:             }
michael@0:             break;
michael@0:         default:
michael@0:             if (block >= 0x2e && block <= 0x9f && IsJapaneseLocale()) {
michael@0:                 aFontList.AppendElement(kMotoyaLMaru);
michael@0:                 aFontList.AppendElement(kDroidSansJapanese);
michael@0:             }
michael@0:             break;
michael@0:         }
michael@0:     }
michael@0:     // and try Droid Sans Fallback as a last resort
michael@0:     aFontList.AppendElement("Droid Sans Fallback");
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: gfxAndroidPlatform::GetFontList(nsIAtom *aLangGroup,
michael@0:                                 const nsACString& aGenericFamily,
michael@0:                                 nsTArray<nsString>& aListOfFonts)
michael@0: {
michael@0:     gfxPlatformFontList::PlatformFontList()->GetFontList(aLangGroup,
michael@0:                                                          aGenericFamily,
michael@0:                                                          aListOfFonts);
michael@0:     return NS_OK;
michael@0: }
michael@0: 
michael@0: void
michael@0: gfxAndroidPlatform::GetFontList(InfallibleTArray<FontListEntry>* retValue)
michael@0: {
michael@0:     gfxFT2FontList::PlatformFontList()->GetFontList(retValue);
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: gfxAndroidPlatform::UpdateFontList()
michael@0: {
michael@0:     gfxPlatformFontList::PlatformFontList()->UpdateFontList();
michael@0:     return NS_OK;
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: gfxAndroidPlatform::ResolveFontName(const nsAString& aFontName,
michael@0:                                     FontResolverCallback aCallback,
michael@0:                                     void *aClosure,
michael@0:                                     bool& aAborted)
michael@0: {
michael@0:     nsAutoString resolvedName;
michael@0:     if (!gfxPlatformFontList::PlatformFontList()->
michael@0:              ResolveFontName(aFontName, resolvedName)) {
michael@0:         aAborted = false;
michael@0:         return NS_OK;
michael@0:     }
michael@0:     aAborted = !(*aCallback)(resolvedName, aClosure);
michael@0:     return NS_OK;
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: gfxAndroidPlatform::GetStandardFamilyName(const nsAString& aFontName, nsAString& aFamilyName)
michael@0: {
michael@0:     gfxPlatformFontList::PlatformFontList()->GetStandardFamilyName(aFontName, aFamilyName);
michael@0:     return NS_OK;
michael@0: }
michael@0: 
michael@0: gfxPlatformFontList*
michael@0: gfxAndroidPlatform::CreatePlatformFontList()
michael@0: {
michael@0:     gfxPlatformFontList* list = new gfxFT2FontList();
michael@0:     if (NS_SUCCEEDED(list->InitFontList())) {
michael@0:         return list;
michael@0:     }
michael@0:     gfxPlatformFontList::Shutdown();
michael@0:     return nullptr;
michael@0: }
michael@0: 
michael@0: bool
michael@0: gfxAndroidPlatform::IsFontFormatSupported(nsIURI *aFontURI, uint32_t aFormatFlags)
michael@0: {
michael@0:     // check for strange format flags
michael@0:     NS_ASSERTION(!(aFormatFlags & gfxUserFontSet::FLAG_FORMAT_NOT_USED),
michael@0:                  "strange font format hint set");
michael@0: 
michael@0:     // accept supported formats
michael@0:     if (aFormatFlags & (gfxUserFontSet::FLAG_FORMAT_OPENTYPE |
michael@0:                         gfxUserFontSet::FLAG_FORMAT_WOFF |
michael@0:                         gfxUserFontSet::FLAG_FORMAT_TRUETYPE)) {
michael@0:         return true;
michael@0:     }
michael@0: 
michael@0:     // reject all other formats, known and unknown
michael@0:     if (aFormatFlags != 0) {
michael@0:         return false;
michael@0:     }
michael@0: 
michael@0:     // no format hint set, need to look at data
michael@0:     return true;
michael@0: }
michael@0: 
michael@0: gfxFontGroup *
michael@0: gfxAndroidPlatform::CreateFontGroup(const nsAString &aFamilies,
michael@0:                                const gfxFontStyle *aStyle,
michael@0:                                gfxUserFontSet* aUserFontSet)
michael@0: {
michael@0:     return new gfxFontGroup(aFamilies, aStyle, aUserFontSet);
michael@0: }
michael@0: 
michael@0: FT_Library
michael@0: gfxAndroidPlatform::GetFTLibrary()
michael@0: {
michael@0:     return gPlatformFTLibrary;
michael@0: }
michael@0: 
michael@0: gfxFontEntry* 
michael@0: gfxAndroidPlatform::MakePlatformFont(const gfxProxyFontEntry *aProxyEntry,
michael@0:                                      const uint8_t *aFontData, uint32_t aLength)
michael@0: {
michael@0:     return gfxPlatformFontList::PlatformFontList()->MakePlatformFont(aProxyEntry,
michael@0:                                                                      aFontData,
michael@0:                                                                      aLength);
michael@0: }
michael@0: 
michael@0: gfxFontEntry*
michael@0: gfxAndroidPlatform::LookupLocalFont(const gfxProxyFontEntry *aProxyEntry,
michael@0:                                     const nsAString& aFontName)
michael@0: {
michael@0:     return gfxPlatformFontList::PlatformFontList()->LookupLocalFont(aProxyEntry,
michael@0:                                                                     aFontName);
michael@0: }
michael@0: 
michael@0: TemporaryRef<ScaledFont>
michael@0: gfxAndroidPlatform::GetScaledFontForFont(DrawTarget* aTarget, gfxFont *aFont)
michael@0: {
michael@0:     return GetScaledFontForFontWithCairoSkia(aTarget, aFont);
michael@0: }
michael@0: 
michael@0: bool
michael@0: gfxAndroidPlatform::FontHintingEnabled()
michael@0: {
michael@0:     // In "mobile" builds, we sometimes use non-reflow-zoom, so we
michael@0:     // might not want hinting.  Let's see.
michael@0: 
michael@0: #ifdef MOZ_USING_ANDROID_JAVA_WIDGETS
michael@0:     // On android-java, we currently only use gecko to render web
michael@0:     // content that can always be be non-reflow-zoomed.  So turn off
michael@0:     // hinting.
michael@0:     // 
michael@0:     // XXX when gecko-android-java is used as an "app runtime", we may
michael@0:     // want to re-enable hinting for non-browser processes there.
michael@0:     return false;
michael@0: #endif //  MOZ_USING_ANDROID_JAVA_WIDGETS
michael@0: 
michael@0: #ifdef MOZ_WIDGET_GONK
michael@0:     // On B2G, the UX preference is currently to keep hinting disabled
michael@0:     // for all text (see bug 829523).
michael@0:     return false;
michael@0: #endif
michael@0: 
michael@0:     // Currently, we don't have any other targets, but if/when we do,
michael@0:     // decide how to handle them here.
michael@0: 
michael@0:     NS_NOTREACHED("oops, what platform is this?");
michael@0:     return gfxPlatform::FontHintingEnabled();
michael@0: }
michael@0: 
michael@0: bool
michael@0: gfxAndroidPlatform::RequiresLinearZoom()
michael@0: {
michael@0: #ifdef MOZ_USING_ANDROID_JAVA_WIDGETS
michael@0:     // On android-java, we currently only use gecko to render web
michael@0:     // content that can always be be non-reflow-zoomed.
michael@0:     //
michael@0:     // XXX when gecko-android-java is used as an "app runtime", we may
michael@0:     // want to treat it like B2G and use linear zoom only for the web
michael@0:     // browser process, not other apps.
michael@0:     return true;
michael@0: #endif
michael@0: 
michael@0: #ifdef MOZ_WIDGET_GONK
michael@0:     // On B2G, we need linear zoom for the browser, but otherwise prefer
michael@0:     // the improved glyph spacing that results from respecting the device
michael@0:     // pixel resolution for glyph layout (see bug 816614).
michael@0:     return XRE_GetProcessType() == GeckoProcessType_Content &&
michael@0:            ContentChild::GetSingleton()->IsForBrowser();
michael@0: #endif
michael@0: 
michael@0:     NS_NOTREACHED("oops, what platform is this?");
michael@0:     return gfxPlatform::RequiresLinearZoom();
michael@0: }
michael@0: 
michael@0: int
michael@0: gfxAndroidPlatform::GetScreenDepth() const
michael@0: {
michael@0:     return mScreenDepth;
michael@0: }
michael@0: 
michael@0: bool
michael@0: gfxAndroidPlatform::UseAcceleratedSkiaCanvas()
michael@0: {
michael@0: #ifdef MOZ_WIDGET_ANDROID
michael@0:     if (AndroidBridge::Bridge()->GetAPIVersion() < 11) {
michael@0:         // It's slower than software due to not having a compositing fast path
michael@0:         return false;
michael@0:     }
michael@0: #endif
michael@0: 
michael@0:     return gfxPlatform::UseAcceleratedSkiaCanvas();
michael@0: }