Examples with ShapingEngine com.mta.tehreer.sfnt.ShapingEngine used on opensource projects

Example 1 with ShapingEngine

use of com.mta.tehreer.sfnt.ShapingEngine in project Tehreer-Android by mta452.

the class ShapeResolver method fillRuns.

public static void fillRuns(@NonNull String text, @NonNull Spanned spanned, @NonNull List<Object> defaultSpans, @NonNull byte[] breaks, @NonNull List<BidiParagraph> paragraphs, @NonNull List<TextRun> runs) {
    BidiAlgorithm bidiAlgorithm = null;
    ShapingEngine shapingEngine = null;
    try {
        bidiAlgorithm = new BidiAlgorithm(text);
        shapingEngine = new ShapingEngine();
        ScriptClassifier scriptClassifier = new ScriptClassifier(text);
        ShapingRunLocator locator = new ShapingRunLocator(spanned, defaultSpans);
        BaseDirection baseDirection = BaseDirection.DEFAULT_LEFT_TO_RIGHT;
        byte forwardType = BreakResolver.typeMode(BreakResolver.PARAGRAPH, true);
        byte backwardType = BreakResolver.typeMode(BreakResolver.PARAGRAPH, false);
        int paragraphStart = 0;
        int suggestedEnd = text.length();
        while (paragraphStart != suggestedEnd) {
            BidiParagraph paragraph = bidiAlgorithm.createParagraph(paragraphStart, suggestedEnd, baseDirection);
            for (BidiRun bidiRun : paragraph.getLogicalRuns()) {
                for (ScriptRun scriptRun : scriptClassifier.getScriptRuns(bidiRun.charStart, bidiRun.charEnd)) {
                    int scriptTag = Script.getOpenTypeTag(scriptRun.script);
                    WritingDirection writingDirection = ShapingEngine.getScriptDirection(scriptTag);
                    boolean isOddLevel = ((bidiRun.embeddingLevel & 1) == 1);
                    boolean isBackward = (isOddLevel && writingDirection == WritingDirection.LEFT_TO_RIGHT) | (!isOddLevel && writingDirection == WritingDirection.RIGHT_TO_LEFT);
                    ShapingOrder shapingOrder = (isBackward ? ShapingOrder.BACKWARD : ShapingOrder.FORWARD);
                    locator.reset(scriptRun.charStart, scriptRun.charEnd);
                    shapingEngine.setScriptTag(scriptTag);
                    shapingEngine.setWritingDirection(writingDirection);
                    shapingEngine.setShapingOrder(shapingOrder);
                    resolveTypefaces(text, spanned, runs, locator, shapingEngine, bidiRun.embeddingLevel);
                }
            }
            paragraphs.add(paragraph);
            breaks[paragraph.getCharStart()] |= backwardType;
            breaks[paragraph.getCharEnd() - 1] |= forwardType;
            paragraphStart = paragraph.getCharEnd();
        }
    } finally {
        if (shapingEngine != null) {
            shapingEngine.dispose();
        }
        if (bidiAlgorithm != null) {
            bidiAlgorithm.dispose();
        }
    }
}

Example 2 with ShapingEngine

use of com.mta.tehreer.sfnt.ShapingEngine in project Tehreer-Android by mta452.

the class Typesetter method resolveBidi.

private void resolveBidi() {
    // TODO: Analyze script runs.
    BidiAlgorithm bidiAlgorithm = null;
    ShapingEngine shapingEngine = null;
    try {
        bidiAlgorithm = new BidiAlgorithm(mText);
        shapingEngine = new ShapingEngine();
        BaseDirection baseDirection = BaseDirection.DEFAULT_LEFT_TO_RIGHT;
        byte forwardType = specializeBreakType(BREAK_TYPE_PARAGRAPH, true);
        byte backwardType = specializeBreakType(BREAK_TYPE_PARAGRAPH, false);
        int paragraphStart = 0;
        int suggestedEnd = mText.length();
        while (paragraphStart != suggestedEnd) {
            BidiParagraph paragraph = bidiAlgorithm.createParagraph(paragraphStart, suggestedEnd, baseDirection);
            for (BidiRun bidiRun : paragraph.getLogicalRuns()) {
                int scriptTag = SfntTag.make(bidiRun.isRightToLeft() ? "arab" : "latn");
                WritingDirection writingDirection = ShapingEngine.getScriptDirection(scriptTag);
                shapingEngine.setScriptTag(scriptTag);
                shapingEngine.setWritingDirection(writingDirection);
                resolveTypefaces(bidiRun.charStart, bidiRun.charEnd, bidiRun.embeddingLevel, shapingEngine);
            }
            mBidiParagraphs.add(paragraph);
            mBreakRecord[paragraph.getCharStart()] |= backwardType;
            mBreakRecord[paragraph.getCharEnd() - 1] |= forwardType;
            paragraphStart = paragraph.getCharEnd();
        }
    } finally {
        if (shapingEngine != null) {
            shapingEngine.dispose();
        }
        if (bidiAlgorithm != null) {
            bidiAlgorithm.dispose();
        }
    }
}

Example 3 with ShapingEngine

use of com.mta.tehreer.sfnt.ShapingEngine in project Tehreer-Android by mta452.

the class OpenTypeInfoActivity method onCreate.

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_opentype_info);
    ActionBar actionBar = getSupportActionBar();
    if (actionBar != null) {
        actionBar.setDisplayHomeAsUpEnabled(true);
    }
    Intent intent = getIntent();
    String typefaceName = intent.getStringExtra(TYPEFACE_NAME);
    int typeSize = intent.getIntExtra(TYPE_SIZE, 0);
    int scriptTag = intent.getIntExtra(SCRIPT_TAG, 0);
    int languageTag = intent.getIntExtra(LANGUAGE_TAG, 0);
    String sourceText = intent.getCharSequenceExtra(SOURCE_TEXT).toString();
    WritingDirection writingDirection = ShapingEngine.getScriptDirection(scriptTag);
    Typeface typeface = TypefaceManager.getTypefaceByName(typefaceName);
    DisplayMetrics displayMetrics = getResources().getDisplayMetrics();
    float displaySize = 18.0f * displayMetrics.scaledDensity;
    float sizeScale = displaySize / typeSize;
    Renderer renderer = new Renderer();
    renderer.setTypeface(typeface);
    renderer.setTypeSize(typeSize);
    renderer.setScaleX(sizeScale);
    renderer.setScaleY(sizeScale);
    ShapingEngine shapingEngine = ShapingEngine.finalizable(new ShapingEngine());
    shapingEngine.setTypeface(typeface);
    shapingEngine.setTypeSize(typeSize);
    shapingEngine.setScriptTag(scriptTag);
    shapingEngine.setLanguageTag(languageTag);
    shapingEngine.setWritingDirection(writingDirection);
    ShapingResult shapingResult = ShapingResult.finalizable(shapingEngine.shapeText(sourceText, 0, sourceText.length()));
    IntList clusterMap = shapingResult.getClusterMap();
    int length = clusterMap.size();
    int[] initials = new int[length + 1];
    int cluster = -1;
    int previous = -1;
    for (int i = 0; i < length; i++) {
        int value = clusterMap.get(i);
        if (value != previous) {
            initials[++cluster] = i;
        }
        previous = value;
    }
    initials[++cluster] = length;
    ListView infoListView = findViewById(R.id.list_view_info);
    infoListView.setAdapter(new ClusterAdapter(this, renderer, sourceText, shapingResult, IntList.of(initials).subList(0, cluster + 1)));
}