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Commit ff40ab7a authored by Fabrice Di Meglio's avatar Fabrice Di Meglio
Browse files

Fix bug #5180841 TextLayoutCache needs to support Indic 

- add Tamil and Devanagari shaping support

Change-Id: I331ec52cd1987e157100deb699db27f855881c32
parent f64dfccd

core/jni/android/graphics/TextLayoutCache.cpp

+18 −0
Original line number Diff line number Diff line
@@ -36,6 +36,8 @@ namespace android { 
#define TYPE_FACE_HEBREW_REGULAR "/system/fonts/DroidSansHebrew-Regular.ttf"

#define TYPE_FACE_HEBREW_BOLD "/system/fonts/DroidSansHebrew-Bold.ttf"

#define TYPEFACE_BENGALI "/system/fonts/Lohit-Bengali.ttf"

#define TYPEFACE_DEVANAGARI "/system/fonts/Lohit-Devanagari.ttf"

#define TYPEFACE_TAMIL "/system/fonts/Lohit-Tamil.ttf"

#define TYPEFACE_THAI "/system/fonts/DroidSansThai.ttf"



ANDROID_SINGLETON_STATIC_INSTANCE(TextLayoutEngine);
@@ -828,6 +830,20 @@ size_t TextLayoutShaper::shapeFontRun(const SkPaint* paint, bool isRTL) { 
#endif

        break;



    case HB_Script_Devanagari:

        typeface = getCachedTypeface(&mDevanagariTypeface, TYPEFACE_DEVANAGARI);

#if DEBUG_GLYPHS

        ALOGD("Using Devanagari Typeface");

#endif

        break;



    case HB_Script_Tamil:

        typeface = getCachedTypeface(&mTamilTypeface, TYPEFACE_TAMIL);

#if DEBUG_GLYPHS

        ALOGD("Using Tamil Typeface");

#endif

        break;



    default:

        if (!typeface) {

            typeface = mDefaultTypeface;
@@ -859,6 +875,8 @@ size_t TextLayoutShaper::shapeFontRun(const SkPaint* paint, bool isRTL) { 
    case HB_Script_Arabic:

    case HB_Script_Hebrew:

    case HB_Script_Bengali:

    case HB_Script_Devanagari:

    case HB_Script_Tamil:

    case HB_Script_Thai:{

        const uint16_t* text16 = (const uint16_t*)(mShaperItem.string + mShaperItem.item.pos);

        SkUnichar firstUnichar = SkUTF16_NextUnichar(&text16);

core/jni/android/graphics/TextLayoutCache.h

+2 −0
Original line number Diff line number Diff line
@@ -194,6 +194,8 @@ private: 
    SkTypeface* mHebrewBoldTypeface;

    SkTypeface* mBengaliTypeface;

    SkTypeface* mThaiTypeface;

    SkTypeface* mDevanagariTypeface;

    SkTypeface* mTamilTypeface;



    /**

     * Cache of Harfbuzz faces