Propagating some useful font changes. (94bbccc3) · Commits · e / os / android_frameworks_base

libs/rs/rsFont.cpp

+47 −11

Original line number	Diff line number	Diff line
		@@ -130,15 +130,7 @@ void Font::renderUTF(const char *text, uint32_t len, uint32_t start, int numGlyp
		// Move to the next character in the array
		index = nextIndex;

		CachedGlyphInfo *cachedGlyph = mCachedGlyphs.valueFor((uint32_t)utfChar);

		if(cachedGlyph == NULL) {
		cachedGlyph = cacheGlyph((uint32_t)utfChar);
		}
		// Is the glyph still in texture cache?
		if(!cachedGlyph->mIsValid) {
		updateGlyphCache(cachedGlyph);
		}
		CachedGlyphInfo *cachedGlyph = getCachedUTFChar(utfChar);

		// If it's still not valid, we couldn't cache it, so we shouldn't draw garbage
		if(cachedGlyph->mIsValid) {
		@@ -154,6 +146,20 @@ void Font::renderUTF(const char *text, uint32_t len, uint32_t start, int numGlyp
		}
		}

		Font::CachedGlyphInfo* Font::getCachedUTFChar(int32_t utfChar) {

		CachedGlyphInfo *cachedGlyph = mCachedGlyphs.valueFor((uint32_t)utfChar);
		if(cachedGlyph == NULL) {
		cachedGlyph = cacheGlyph((uint32_t)utfChar);
		}
		// Is the glyph still in texture cache?
		if(!cachedGlyph->mIsValid) {
		updateGlyphCache(cachedGlyph);
		}

		return cachedGlyph;
		}

		void Font::updateGlyphCache(CachedGlyphInfo *glyph)
		{
		FT_Error error = FT_Load_Glyph( mFace, glyph->mGlyphIndex, FT_LOAD_RENDER );
		@@ -225,6 +231,7 @@ Font * Font::create(Context rsc, const char name, uint32_t fontSize, uint32_t
		bool isInitialized = newFont->init(name, fontSize, dpi);
		if(isInitialized) {
		activeFonts.push(newFont);
		rsc->mStateFont.precacheLatin(newFont);
		return newFont;
		}

		@@ -422,6 +429,8 @@ void FontState::initTextTexture()
		nextLine += mCacheLines.top()->mMaxHeight;
		mCacheLines.push(new CacheTextureLine(24, texType->getDimX(), nextLine, 0));
		nextLine += mCacheLines.top()->mMaxHeight;
		mCacheLines.push(new CacheTextureLine(24, texType->getDimX(), nextLine, 0));
		nextLine += mCacheLines.top()->mMaxHeight;
		mCacheLines.push(new CacheTextureLine(32, texType->getDimX(), nextLine, 0));
		nextLine += mCacheLines.top()->mMaxHeight;
		mCacheLines.push(new CacheTextureLine(32, texType->getDimX(), nextLine, 0));
		@@ -611,12 +620,33 @@ void FontState::appendMeshQuad(float x1, float y1, float z1,
		}
		}

		uint32_t FontState::getRemainingCacheCapacity() {
		uint32_t remainingCapacity = 0;
		float totalPixels = 0;
		for(uint32_t i = 0; i < mCacheLines.size(); i ++) {
		remainingCapacity += (mCacheLines[i]->mMaxWidth - mCacheLines[i]->mCurrentCol);
		totalPixels += mCacheLines[i]->mMaxWidth;
		}
		remainingCapacity = (remainingCapacity * 100) / totalPixels;
		return remainingCapacity;
		}

		void FontState::precacheLatin(Font *font) {
		// Remaining capacity is measured in %
		uint32_t remainingCapacity = getRemainingCacheCapacity();
		uint32_t precacheIdx = 0;
		while(remainingCapacity > 25 && precacheIdx < mLatinPrecache.size()) {
		font->getCachedUTFChar((int32_t)mLatinPrecache[precacheIdx]);
		remainingCapacity = getRemainingCacheCapacity();
		precacheIdx ++;
		}
		}


		void FontState::renderText(const char *text, uint32_t len, uint32_t startIndex, int numGlyphs, int x, int y)
		{
		checkInit();

		//String8 text8(text);

		// Render code here
		Font *currentFont = mRSC->getFont();
		if(!currentFont) {
		@@ -636,6 +666,12 @@ void FontState::renderText(const char *text, uint32_t len, uint32_t startIndex,
		issueDrawCommand();
		mCurrentQuadIndex = 0;
		}

		// We store a string with letters in a rough frequency of occurrence
		mLatinPrecache = String8(" eisarntolcdugpmhbyfvkwzxjq");
		mLatinPrecache += String8("EISARNTOLCDUGPMHBYFVKWZXJQ");
		mLatinPrecache += String8(",.?!()-+@;:`'");
		mLatinPrecache += String8("0123456789");
		}

		void FontState::renderText(const char *text, int x, int y)

libs/rs/rsFont.h

+9 −1

Original line number	Diff line number	Diff line
		@@ -93,6 +93,7 @@ protected:
		bool mHasKerning;

		DefaultKeyedVector<uint32_t, CachedGlyphInfo* > mCachedGlyphs;
		CachedGlyphInfo* getCachedUTFChar(int32_t utfChar);

		CachedGlyphInfo *cacheGlyph(uint32_t glyph);
		void updateGlyphCache(CachedGlyphInfo *glyph);
		@@ -129,9 +130,11 @@ protected:
		uint32_t mMaxWidth;
		uint32_t mCurrentRow;
		uint32_t mCurrentCol;
		bool mDirty;

		CacheTextureLine(uint32_t maxHeight, uint32_t maxWidth, uint32_t currentRow, uint32_t currentCol) :
		mMaxHeight(maxHeight), mMaxWidth(maxWidth), mCurrentRow(currentRow), mCurrentCol(currentCol) {
		mMaxHeight(maxHeight), mMaxWidth(maxWidth), mCurrentRow(currentRow), mCurrentCol(currentCol),
		mDirty(false) {
		}

		bool fitBitmap(FT_Bitmap bitmap, uint32_t retOriginX, uint32_t *retOriginY) {
		@@ -143,6 +146,7 @@ protected:
		*retOriginX = mCurrentCol;
		*retOriginY = mCurrentRow;
		mCurrentCol += bitmap->width;
		mDirty = true;
		return true;
		}

		@@ -151,6 +155,10 @@ protected:
		};

		Vector<CacheTextureLine*> mCacheLines;
		uint32_t getRemainingCacheCapacity();

		void precacheLatin(Font *font);
		String8 mLatinPrecache;

		Context *mRSC;