am a84fa32a: am 719c9b93: Fix line breaking. (a2b091df) · Commits · e / os / android_frameworks_base

tools/layoutlib/bridge/src/android/text/StaticLayout_Delegate.java

+36 −47

Original line number	Diff line number	Diff line
		@@ -82,36 +82,8 @@ public class StaticLayout_Delegate {

		builder.mText = text;
		builder.mWidths = new float[length];

		// compute all possible breakpoints.
		BreakIterator it = BreakIterator.getLineInstance(new ULocale(builder.mLocale));
		it.setText(new Segment(builder.mText, 0, length));

		// average word length in english is 5. So, initialize the possible breaks with a guess.
		List<Integer> breaks = new ArrayList<Integer>((int) Math.ceil(length / 5d));
		int loc;
		it.first();
		while ((loc = it.next()) != BreakIterator.DONE) {
		breaks.add(loc);
		}
		LineWidth lineWidth = new LineWidth(firstWidth, firstWidthLineCount, restWidth);
		TabStops tabStopCalculator = new TabStops(variableTabStops, defaultTabStop);
		List<Primitive> primitives =
		computePrimitives(builder.mText, builder.mWidths, length, breaks);
		BreakStrategy strategy = BreakStrategy.getStrategy(breakStrategy);
		switch (strategy) {
		case GREEDY:
		builder.mLineBreaker =
		new GreedyLineBreaker(primitives, lineWidth, tabStopCalculator);
		break;
		case HIGH_QUALITY:
		// TODO
		// break;
		case BALANCED:
		builder.mLineBreaker = new OptimizingLineBreaker(primitives, lineWidth,
		tabStopCalculator);
		break;
		}
		builder.mLineWidth = new LineWidth(firstWidth, firstWidthLineCount, restWidth);
		builder.mTabStopCalculator = new TabStops(variableTabStops, defaultTabStop);
		}

		@LayoutlibDelegate
		@@ -160,6 +132,37 @@ public class StaticLayout_Delegate {
		if (builder == null) {
		return 0;
		}

		// compute all possible breakpoints.
		int length = builder.mWidths.length;
		BreakIterator it = BreakIterator.getLineInstance(new ULocale(builder.mLocale));
		it.setText(new Segment(builder.mText, 0, length));

		// average word length in english is 5. So, initialize the possible breaks with a guess.
		List<Integer> breaks = new ArrayList<Integer>((int) Math.ceil(length / 5d));
		int loc;
		it.first();
		while ((loc = it.next()) != BreakIterator.DONE) {
		breaks.add(loc);
		}

		List<Primitive> primitives =
		computePrimitives(builder.mText, builder.mWidths, length, breaks);
		switch (builder.mBreakStrategy) {
		case Layout.BREAK_STRATEGY_SIMPLE:
		builder.mLineBreaker = new GreedyLineBreaker(primitives, builder.mLineWidth,
		builder.mTabStopCalculator);
		break;
		case Layout.BREAK_STRATEGY_HIGH_QUALITY:
		// TODO
		// break;
		case Layout.BREAK_STRATEGY_BALANCED:
		builder.mLineBreaker = new OptimizingLineBreaker(primitives, builder.mLineWidth,
		builder.mTabStopCalculator);
		break;
		default:
		throw new AssertionError("Unknown break strategy: " + builder.mBreakStrategy);
		}
		builder.mLineBreaker.computeBreaks(recycle);
		return recycle.breaks.length;
		}
		@@ -223,22 +226,8 @@ public class StaticLayout_Delegate {
		float[] mWidths;
		LineBreaker mLineBreaker;
		long mNativeHyphenator;
		}

		private enum BreakStrategy {
		GREEDY, HIGH_QUALITY, BALANCED;

		static BreakStrategy getStrategy(int strategy) {
		switch (strategy) {
		case 0:
		return GREEDY;
		case 1:
		return HIGH_QUALITY;
		case 2:
		return BALANCED;
		default:
		throw new AssertionError("Unknown break strategy: " + strategy);
		}
		}
		int mBreakStrategy;
		LineWidth mLineWidth;
		TabStops mTabStopCalculator;
		}
		}