Record hyphens from Minikin and draw them (71cbc72e) · Commits · e / os / android_frameworks_base

core/java/android/text/DynamicLayout.java

+12 −4

Original line number	Diff line number	Diff line
		@@ -356,6 +356,8 @@ public class DynamicLayout extends Layout
		ints[DESCENT] = desc;
		objects[0] = reflowed.getLineDirections(i);

		ints[HYPHEN] = reflowed.getHyphen(i);

		if (mEllipsize) {
		ints[ELLIPSIS_START] = reflowed.getEllipsisStart(i);
		ints[ELLIPSIS_COUNT] = reflowed.getEllipsisCount(i);
		@@ -631,6 +633,11 @@ public class DynamicLayout extends Layout
		return mBottomPadding;
		}

		@Override
		public int getHyphen(int line) {
		return mInts.getValue(line, HYPHEN);
		}

		@Override
		public int getEllipsizedWidth() {
		return mEllipsizedWidth;
		@@ -739,11 +746,12 @@ public class DynamicLayout extends Layout
		private static final int TAB = START;
		private static final int TOP = 1;
		private static final int DESCENT = 2;
		private static final int COLUMNS_NORMAL = 3;
		private static final int HYPHEN = 3;
		private static final int COLUMNS_NORMAL = 4;

		private static final int ELLIPSIS_START = 3;
		private static final int ELLIPSIS_COUNT = 4;
		private static final int COLUMNS_ELLIPSIZE = 5;
		private static final int ELLIPSIS_START = 4;
		private static final int ELLIPSIS_COUNT = 5;
		private static final int COLUMNS_ELLIPSIZE = 6;

		private static final int START_MASK = 0x1FFFFFFF;
		private static final int DIR_SHIFT = 30;

core/java/android/text/Hyphenator.java

0 → 100644

+76 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2015 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		package android.text;

		import android.util.Log;

		import java.io.File;
		import java.io.IOException;
		import java.io.RandomAccessFile;
		import java.util.HashMap;
		import java.util.Locale;

		/**
		* Hyphenator is a wrapper class for a native implementation of automatic hyphenation,
		* in essence finding valid hyphenation opportunities in a word.
		*
		* @hide
		*/
		/* package */ class Hyphenator {
		// This class has deliberately simple lifetime management (no finalizer) because in
		// the common case a process will use a very small number of locales.

		private static String TAG = "Hyphenator";

		static HashMap<Locale, Hyphenator> sMap = new HashMap<Locale, Hyphenator>();

		private long mNativePtr;

		private Hyphenator(long nativePtr) {
		mNativePtr = nativePtr;
		}

		public static long get(Locale locale) {
		synchronized (sMap) {
		Hyphenator result = sMap.get(locale);
		if (result == null) {
		result = loadHyphenator(locale);
		sMap.put(locale, result);
		}
		return result == null ? 0 : result.mNativePtr;
		}
		}

		private static Hyphenator loadHyphenator(Locale locale) {
		// TODO: find pattern dictionary (from system location) that best matches locale
		if (Locale.US.equals(locale)) {
		File f = new File("/data/local/tmp/hyph-en-us.pat.txt");
		try {
		RandomAccessFile rf = new RandomAccessFile(f, "r");
		byte[] buf = new byte[(int)rf.length()];
		rf.read(buf);
		rf.close();
		String patternData = new String(buf);
		long nativePtr = StaticLayout.nLoadHyphenator(patternData);
		return new Hyphenator(nativePtr);
		} catch (IOException e) {
		Log.e(TAG, "error loading hyphenation " + f);
		}
		}
		return null;
		}
		}

core/java/android/text/Layout.java

+21 −11

Original line number	Diff line number	Diff line
		@@ -225,17 +225,17 @@ public abstract class Layout {

		// Draw the lines, one at a time.
		// The baseline is the top of the following line minus the current line's descent.
		for (int i = firstLine; i <= lastLine; i++) {
		for (int lineNum = firstLine; lineNum <= lastLine; lineNum++) {
		int start = previousLineEnd;
		previousLineEnd = getLineStart(i + 1);
		int end = getLineVisibleEnd(i, start, previousLineEnd);
		previousLineEnd = getLineStart(lineNum + 1);
		int end = getLineVisibleEnd(lineNum, start, previousLineEnd);

		int ltop = previousLineBottom;
		int lbottom = getLineTop(i+1);
		int lbottom = getLineTop(lineNum + 1);
		previousLineBottom = lbottom;
		int lbaseline = lbottom - getLineDescent(i);
		int lbaseline = lbottom - getLineDescent(lineNum);

		int dir = getParagraphDirection(i);
		int dir = getParagraphDirection(lineNum);
		int left = 0;
		int right = mWidth;

		@@ -254,7 +254,7 @@ public abstract class Layout {
		// just collect the ones present at the start of the paragraph.
		// If spanEnd is before the end of the paragraph, that's not
		// our problem.
		if (start >= spanEnd && (i == firstLine \|\| isFirstParaLine)) {
		if (start >= spanEnd && (lineNum == firstLine \|\| isFirstParaLine)) {
		spanEnd = sp.nextSpanTransition(start, textLength,
		ParagraphStyle.class);
		spans = getParagraphSpans(sp, start, spanEnd, ParagraphStyle.class);
		@@ -280,7 +280,7 @@ public abstract class Layout {
		int startLine = getLineForOffset(sp.getSpanStart(spans[n]));
		// if there is more than one LeadingMarginSpan2, use
		// the count that is greatest
		if (i < startLine + count) {
		if (lineNum < startLine + count) {
		useFirstLineMargin = true;
		break;
		}
		@@ -304,7 +304,7 @@ public abstract class Layout {
		}
		}

		boolean hasTabOrEmoji = getLineContainsTab(i);
		boolean hasTabOrEmoji = getLineContainsTab(lineNum);
		// Can't tell if we have tabs for sure, currently
		if (hasTabOrEmoji && !tabStopsIsInitialized) {
		if (tabStops == null) {
		@@ -333,7 +333,7 @@ public abstract class Layout {
		x = right;
		}
		} else {
		int max = (int)getLineExtent(i, tabStops, false);
		int max = (int)getLineExtent(lineNum, tabStops, false);
		if (align == Alignment.ALIGN_OPPOSITE) {
		if (dir == DIR_LEFT_TO_RIGHT) {
		x = right - max;
		@@ -346,7 +346,8 @@ public abstract class Layout {
		}
		}

		Directions directions = getLineDirections(i);
		paint.setHyphenEdit(getHyphen(lineNum));
		Directions directions = getLineDirections(lineNum);
		if (directions == DIRS_ALL_LEFT_TO_RIGHT && !mSpannedText && !hasTabOrEmoji) {
		// XXX: assumes there's nothing additional to be done
		canvas.drawText(buf, start, end, x, lbaseline, paint);
		@@ -677,6 +678,15 @@ public abstract class Layout {
		*/
		public abstract int getBottomPadding();

		/**
		* Returns the hyphen edit for a line.
		*
		* @hide
		*/
		public int getHyphen(int line) {
		return 0;
		}


		/**
		* Returns true if the character at offset and the preceding character

core/java/android/text/StaticLayout.java

+26 −14

Original line number	Diff line number	Diff line
		@@ -170,7 +170,8 @@ public class StaticLayout extends Layout {
		* Measurement and break iteration is done in native code. The protocol for using
		* the native code is as follows.
		*
		* For each paragraph, do a nSetText of the paragraph text. Also do nSetLineWidth.
		* For each paragraph, do a nSetupParagraph, which sets paragraph text, line width, tab
		* stops, break strategy (and possibly other parameters in the future).
		*
		* Then, for each run within the paragraph:
		* - setLocale (this must be done at least for the first run, optional afterwards)
		@@ -187,7 +188,7 @@ public class StaticLayout extends Layout {

		private void setLocale(Locale locale) {
		if (!locale.equals(mLocale)) {
		nSetLocale(mNativePtr, locale.toLanguageTag());
		nSetLocale(mNativePtr, locale.toLanguageTag(), Hyphenator.get(locale));
		mLocale = locale;
		}
		}
		@@ -531,7 +532,7 @@ public class StaticLayout extends Layout {

		int[] breaks = lineBreaks.breaks;
		float[] lineWidths = lineBreaks.widths;
		boolean[] flags = lineBreaks.flags;
		int[] flags = lineBreaks.flags;

		// here is the offset of the starting character of the line we are currently measuring
		int here = paraStart;
		@@ -617,7 +618,7 @@ public class StaticLayout extends Layout {
		fm.top, fm.bottom,
		v,
		spacingmult, spacingadd, null,
		null, fm, false,
		null, fm, 0,
		needMultiply, measured.mLevels, measured.mDir, measured.mEasy, bufEnd,
		includepad, trackpad, null,
		null, bufStart, ellipsize,
		@@ -629,7 +630,7 @@ public class StaticLayout extends Layout {
		int above, int below, int top, int bottom, int v,
		float spacingmult, float spacingadd,
		LineHeightSpan[] chooseHt, int[] chooseHtv,
		Paint.FontMetricsInt fm, boolean hasTabOrEmoji,
		Paint.FontMetricsInt fm, int flags,
		boolean needMultiply, byte[] chdirs, int dir,
		boolean easy, int bufEnd, boolean includePad,
		boolean trackPad, char[] chs,
		@@ -722,8 +723,10 @@ public class StaticLayout extends Layout {
		lines[off + mColumns + START] = end;
		lines[off + mColumns + TOP] = v;

		if (hasTabOrEmoji)
		lines[off + TAB] \|= TAB_MASK;
		// TODO: could move TAB to share same column as HYPHEN, simplifying this code and gaining
		// one bit for start field
		lines[off + TAB] \|= flags & TAB_MASK;
		lines[off + HYPHEN] = flags;

		lines[off + DIR] \|= dir << DIR_SHIFT;
		Directions linedirs = DIRS_ALL_LEFT_TO_RIGHT;
		@@ -942,6 +945,11 @@ public class StaticLayout extends Layout {
		return mBottomPadding;
		}

		@Override
		public int getHyphen(int line) {
		return mLines[mColumns * line + HYPHEN] & 0xff;
		}

		@Override
		public int getEllipsisCount(int line) {
		if (mColumns < COLUMNS_ELLIPSIZE) {
		@@ -968,7 +976,10 @@ public class StaticLayout extends Layout {
		private static native long nNewBuilder();
		private static native void nFreeBuilder(long nativePtr);
		private static native void nFinishBuilder(long nativePtr);
		private static native void nSetLocale(long nativePtr, String locale);

		/* package */ static native long nLoadHyphenator(String patternData);

		private static native void nSetLocale(long nativePtr, String locale, long nativeHyphenator);

		// Set up paragraph text and settings; done as one big method to minimize jni crossings
		private static native void nSetupParagraph(long nativePtr, char[] text, int length,
		@@ -991,22 +1002,23 @@ public class StaticLayout extends Layout {
		// to reduce the number of JNI calls in the common case where the
		// arrays do not have to be resized
		private static native int nComputeLineBreaks(long nativePtr, LineBreaks recycle,
		int[] recycleBreaks, float[] recycleWidths, boolean[] recycleFlags, int recycleLength);
		int[] recycleBreaks, float[] recycleWidths, int[] recycleFlags, int recycleLength);

		private int mLineCount;
		private int mTopPadding, mBottomPadding;
		private int mColumns;
		private int mEllipsizedWidth;

		private static final int COLUMNS_NORMAL = 3;
		private static final int COLUMNS_ELLIPSIZE = 5;
		private static final int COLUMNS_NORMAL = 4;
		private static final int COLUMNS_ELLIPSIZE = 6;
		private static final int START = 0;
		private static final int DIR = START;
		private static final int TAB = START;
		private static final int TOP = 1;
		private static final int DESCENT = 2;
		private static final int ELLIPSIS_START = 3;
		private static final int ELLIPSIS_COUNT = 4;
		private static final int HYPHEN = 3;
		private static final int ELLIPSIS_START = 4;
		private static final int ELLIPSIS_COUNT = 5;

		private int[] mLines;
		private Directions[] mLineDirections;
		@@ -1028,7 +1040,7 @@ public class StaticLayout extends Layout {
		private static final int INITIAL_SIZE = 16;
		public int[] breaks = new int[INITIAL_SIZE];
		public float[] widths = new float[INITIAL_SIZE];
		public boolean[] flags = new boolean[INITIAL_SIZE]; // hasTabOrEmoji
		public int[] flags = new int[INITIAL_SIZE]; // hasTabOrEmoji
		// breaks, widths, and flags should all have the same length
		}

core/java/android/text/TextLine.java

+4 −0

Original line number	Diff line number	Diff line
		@@ -955,6 +955,10 @@ class TextLine {
		span.updateDrawState(wp);
		}

		// Only draw hyphen on last run in line
		if (jnext < mLen) {
		wp.setHyphenEdit(0);
		}
		x += handleText(wp, j, jnext, i, inext, runIsRtl, c, x,
		top, y, bottom, fmi, needWidth \|\| jnext < measureLimit);
		}