338 lines
10 KiB
C++
338 lines
10 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "base/basictypes.h"
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#include "gfxAndroidPlatform.h"
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#include "mozilla/gfx/2D.h"
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#include "mozilla/CountingAllocatorBase.h"
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#include "mozilla/Preferences.h"
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#include "gfx2DGlue.h"
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#include "gfxFT2FontList.h"
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#include "gfxImageSurface.h"
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#include "gfxTextRun.h"
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#include "mozilla/dom/ContentChild.h"
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#include "nsXULAppAPI.h"
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#include "nsIScreen.h"
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#include "nsIScreenManager.h"
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#include "nsILocaleService.h"
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#include "nsServiceManagerUtils.h"
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#include "nsUnicodeProperties.h"
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#include "gfxPrefs.h"
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#include "cairo.h"
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#include "VsyncSource.h"
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#include "ft2build.h"
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#include FT_FREETYPE_H
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#include FT_MODULE_H
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using namespace mozilla;
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using namespace mozilla::dom;
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using namespace mozilla::gfx;
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using namespace mozilla::unicode;
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static FT_Library gPlatformFTLibrary = nullptr;
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class FreetypeReporter final : public nsIMemoryReporter,
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public CountingAllocatorBase<FreetypeReporter>
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{
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private:
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~FreetypeReporter() {}
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public:
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NS_DECL_ISUPPORTS
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static void* Malloc(FT_Memory, long size)
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{
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return CountingMalloc(size);
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}
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static void Free(FT_Memory, void* p)
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{
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return CountingFree(p);
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}
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static void*
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Realloc(FT_Memory, long cur_size, long new_size, void* p)
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{
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return CountingRealloc(p, new_size);
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}
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NS_IMETHOD CollectReports(nsIHandleReportCallback* aHandleReport,
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nsISupports* aData, bool aAnonymize) override
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{
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MOZ_COLLECT_REPORT(
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"explicit/freetype", KIND_HEAP, UNITS_BYTES, MemoryAllocated(),
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"Memory used by Freetype.");
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return NS_OK;
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}
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};
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NS_IMPL_ISUPPORTS(FreetypeReporter, nsIMemoryReporter)
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template<> Atomic<size_t> CountingAllocatorBase<FreetypeReporter>::sAmount(0);
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static FT_MemoryRec_ sFreetypeMemoryRecord;
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gfxAndroidPlatform::gfxAndroidPlatform()
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{
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// A custom allocator. It counts allocations, enabling memory reporting.
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sFreetypeMemoryRecord.user = nullptr;
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sFreetypeMemoryRecord.alloc = FreetypeReporter::Malloc;
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sFreetypeMemoryRecord.free = FreetypeReporter::Free;
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sFreetypeMemoryRecord.realloc = FreetypeReporter::Realloc;
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// These two calls are equivalent to FT_Init_FreeType(), but allow us to
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// provide a custom memory allocator.
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FT_New_Library(&sFreetypeMemoryRecord, &gPlatformFTLibrary);
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FT_Add_Default_Modules(gPlatformFTLibrary);
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RegisterStrongMemoryReporter(new FreetypeReporter());
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mOffscreenFormat = GetScreenDepth() == 16
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? SurfaceFormat::R5G6B5_UINT16
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: SurfaceFormat::X8R8G8B8_UINT32;
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if (gfxPrefs::AndroidRGB16Force()) {
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mOffscreenFormat = SurfaceFormat::R5G6B5_UINT16;
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}
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}
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gfxAndroidPlatform::~gfxAndroidPlatform()
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{
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FT_Done_Library(gPlatformFTLibrary);
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gPlatformFTLibrary = nullptr;
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}
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already_AddRefed<gfxASurface>
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gfxAndroidPlatform::CreateOffscreenSurface(const IntSize& aSize,
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gfxImageFormat aFormat)
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{
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if (!Factory::AllowedSurfaceSize(aSize)) {
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return nullptr;
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}
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RefPtr<gfxASurface> newSurface;
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newSurface = new gfxImageSurface(aSize, aFormat);
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return newSurface.forget();
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}
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static bool
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IsJapaneseLocale()
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{
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static bool sInitialized = false;
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static bool sIsJapanese = false;
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if (!sInitialized) {
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sInitialized = true;
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do { // to allow 'break' to abandon this block if a call fails
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nsresult rv;
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nsCOMPtr<nsILocaleService> ls =
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do_GetService(NS_LOCALESERVICE_CONTRACTID, &rv);
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if (NS_FAILED(rv)) {
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break;
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}
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nsCOMPtr<nsILocale> appLocale;
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rv = ls->GetApplicationLocale(getter_AddRefs(appLocale));
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if (NS_FAILED(rv)) {
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break;
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}
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nsString localeStr;
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rv = appLocale->
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GetCategory(NS_LITERAL_STRING(NSILOCALE_MESSAGE), localeStr);
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if (NS_FAILED(rv)) {
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break;
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}
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const nsAString& lang = nsDependentSubstring(localeStr, 0, 2);
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if (lang.EqualsLiteral("ja")) {
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sIsJapanese = true;
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}
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} while (false);
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}
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return sIsJapanese;
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}
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void
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gfxAndroidPlatform::GetCommonFallbackFonts(uint32_t aCh, uint32_t aNextCh,
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Script aRunScript,
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nsTArray<const char*>& aFontList)
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{
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static const char kDroidSansJapanese[] = "Droid Sans Japanese";
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static const char kMotoyaLMaru[] = "MotoyaLMaru";
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static const char kNotoSansCJKJP[] = "Noto Sans CJK JP";
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static const char kNotoColorEmoji[] = "Noto Color Emoji";
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EmojiPresentation emoji = GetEmojiPresentation(aCh);
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if (emoji != EmojiPresentation::TextOnly) {
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if (aNextCh == kVariationSelector16 ||
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(aNextCh != kVariationSelector15 &&
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emoji == EmojiPresentation::EmojiDefault)) {
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// if char is followed by VS16, try for a color emoji glyph
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aFontList.AppendElement(kNotoColorEmoji);
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}
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}
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if (IS_IN_BMP(aCh)) {
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// try language-specific "Droid Sans *" and "Noto Sans *" fonts for
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// certain blocks, as most devices probably have these
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uint8_t block = (aCh >> 8) & 0xff;
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switch (block) {
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case 0x05:
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aFontList.AppendElement("Droid Sans Hebrew");
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aFontList.AppendElement("Droid Sans Armenian");
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break;
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case 0x06:
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aFontList.AppendElement("Droid Sans Arabic");
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break;
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case 0x09:
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aFontList.AppendElement("Noto Sans Devanagari");
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aFontList.AppendElement("Droid Sans Devanagari");
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break;
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case 0x0b:
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aFontList.AppendElement("Noto Sans Tamil");
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aFontList.AppendElement("Droid Sans Tamil");
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break;
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case 0x0e:
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aFontList.AppendElement("Noto Sans Thai");
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aFontList.AppendElement("Droid Sans Thai");
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break;
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case 0x10: case 0x2d:
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aFontList.AppendElement("Droid Sans Georgian");
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break;
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case 0x12: case 0x13:
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aFontList.AppendElement("Droid Sans Ethiopic");
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break;
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case 0xf9: case 0xfa:
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if (IsJapaneseLocale()) {
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aFontList.AppendElement(kMotoyaLMaru);
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aFontList.AppendElement(kNotoSansCJKJP);
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aFontList.AppendElement(kDroidSansJapanese);
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}
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break;
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default:
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if (block >= 0x2e && block <= 0x9f && IsJapaneseLocale()) {
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aFontList.AppendElement(kMotoyaLMaru);
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aFontList.AppendElement(kNotoSansCJKJP);
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aFontList.AppendElement(kDroidSansJapanese);
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}
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break;
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}
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}
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// and try Droid Sans Fallback as a last resort
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aFontList.AppendElement("Droid Sans Fallback");
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}
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void
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gfxAndroidPlatform::GetSystemFontList(InfallibleTArray<FontListEntry>* retValue)
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{
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gfxFT2FontList::PlatformFontList()->GetSystemFontList(retValue);
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}
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gfxPlatformFontList*
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gfxAndroidPlatform::CreatePlatformFontList()
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{
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gfxPlatformFontList* list = new gfxFT2FontList();
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if (NS_SUCCEEDED(list->InitFontList())) {
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return list;
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}
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gfxPlatformFontList::Shutdown();
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return nullptr;
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}
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bool
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gfxAndroidPlatform::IsFontFormatSupported(nsIURI *aFontURI, uint32_t aFormatFlags)
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{
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// check for strange format flags
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NS_ASSERTION(!(aFormatFlags & gfxUserFontSet::FLAG_FORMAT_NOT_USED),
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"strange font format hint set");
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// accept supported formats
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if (aFormatFlags & gfxUserFontSet::FLAG_FORMATS_COMMON) {
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return true;
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}
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// reject all other formats, known and unknown
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if (aFormatFlags != 0) {
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return false;
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}
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// no format hint set, need to look at data
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return true;
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}
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gfxFontGroup *
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gfxAndroidPlatform::CreateFontGroup(const FontFamilyList& aFontFamilyList,
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const gfxFontStyle* aStyle,
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gfxTextPerfMetrics* aTextPerf,
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gfxUserFontSet* aUserFontSet,
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gfxFloat aDevToCssSize)
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{
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return new gfxFontGroup(aFontFamilyList, aStyle, aTextPerf,
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aUserFontSet, aDevToCssSize);
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}
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FT_Library
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gfxAndroidPlatform::GetFTLibrary()
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{
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return gPlatformFTLibrary;
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}
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already_AddRefed<ScaledFont>
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gfxAndroidPlatform::GetScaledFontForFont(DrawTarget* aTarget, gfxFont *aFont)
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{
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return GetScaledFontForFontWithCairoSkia(aTarget, aFont);
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}
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bool
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gfxAndroidPlatform::FontHintingEnabled()
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{
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// In "mobile" builds, we sometimes use non-reflow-zoom, so we
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// might not want hinting. Let's see.
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#ifdef MOZ_WIDGET_ANDROID
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// On Android, we currently only use gecko to render web
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// content that can always be be non-reflow-zoomed. So turn off
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// hinting.
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//
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// XXX when gecko-android-java is used as an "app runtime", we may
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// want to re-enable hinting for non-browser processes there.
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return false;
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#endif // MOZ_WIDGET_ANDROID
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// Currently, we don't have any other targets, but if/when we do,
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// decide how to handle them here.
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NS_NOTREACHED("oops, what platform is this?");
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return gfxPlatform::FontHintingEnabled();
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}
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bool
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gfxAndroidPlatform::RequiresLinearZoom()
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{
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#ifdef MOZ_WIDGET_ANDROID
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// On Android, we currently only use gecko to render web
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// content that can always be be non-reflow-zoomed.
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//
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// XXX when gecko-android-java is used as an "app runtime", we may
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// want to treat it like B2G and use linear zoom only for the web
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// browser process, not other apps.
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return true;
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#endif
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NS_NOTREACHED("oops, what platform is this?");
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return gfxPlatform::RequiresLinearZoom();
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}
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already_AddRefed<mozilla::gfx::VsyncSource>
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gfxAndroidPlatform::CreateHardwareVsyncSource()
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{
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return gfxPlatform::CreateHardwareVsyncSource();
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}
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