Merge "Update TextShaper APIs to address API council feedback" (7347b89f) · Commits · e / os / android_frameworks_base

api/current.txt

+14 −28

Original line number	Diff line number	Diff line
		@@ -16536,23 +16536,6 @@ package android.graphics.pdf {

		package android.graphics.text {

		public class GlyphStyle {
		ctor public GlyphStyle(@ColorInt int, @FloatRange(from=0) float, @FloatRange(from=0) float, @FloatRange(from=0) float, int);
		ctor public GlyphStyle(@NonNull android.graphics.Paint);
		method public void applyToPaint(@NonNull android.graphics.Paint);
		method @ColorInt public int getColor();
		method public int getFlags();
		method @FloatRange(from=0) public float getFontSize();
		method @FloatRange(from=0) public float getScaleX();
		method @FloatRange(from=0) public float getSkewX();
		method public void setColor(@ColorInt int);
		method public void setFlags(int);
		method public void setFontSize(@FloatRange(from=0) float);
		method public void setFromPaint(@NonNull android.graphics.Paint);
		method public void setScaleX(@FloatRange(from=0) float);
		method public void setSkewX(@FloatRange(from=0) float);
		}

		public class LineBreaker {
		method @NonNull public android.graphics.text.LineBreaker.Result computeLineBreaks(@NonNull android.graphics.text.MeasuredText, @NonNull android.graphics.text.LineBreaker.ParagraphConstraints, @IntRange(from=0) int);
		field public static final int BREAK_STRATEGY_BALANCED = 2; // 0x2
		@@ -16614,20 +16597,19 @@ package android.graphics.text {
		}

		public final class PositionedGlyphs {
		method public float getAdvance();
		method public float getAscent();
		method public float getDescent();
		method @NonNull public android.graphics.fonts.Font getFont(@IntRange(from=0) int);
		method @IntRange(from=0) public int getGlyphId(@IntRange(from=0) int);
		method public float getOriginX();
		method public float getOriginY();
		method public float getPositionX(@IntRange(from=0) int);
		method public float getPositionY(@IntRange(from=0) int);
		method @NonNull public android.graphics.text.GlyphStyle getStyle();
		method public float getTotalAdvance();
		method public float getGlyphX(@IntRange(from=0) int);
		method public float getGlyphY(@IntRange(from=0) int);
		method public float getOffsetX();
		method public float getOffsetY();
		method @IntRange(from=0) public int glyphCount();
		}

		public class TextShaper {
		public class TextRunShaper {
		method @NonNull public static android.graphics.text.PositionedGlyphs shapeTextRun(@NonNull char[], int, int, int, int, float, float, boolean, @NonNull android.graphics.Paint);
		method @NonNull public static android.graphics.text.PositionedGlyphs shapeTextRun(@NonNull CharSequence, int, int, int, int, float, float, boolean, @NonNull android.graphics.Paint);
		}
		@@ -50075,10 +50057,6 @@ package android.text {
		method @NonNull public android.text.StaticLayout.Builder setUseLineSpacingFromFallbacks(boolean);
		}

		public class StyledTextShaper {
		method @NonNull public static java.util.List<android.graphics.text.PositionedGlyphs> shapeText(@NonNull CharSequence, int, int, @NonNull android.text.TextDirectionHeuristic, @NonNull android.text.TextPaint);
		}

		public interface TextDirectionHeuristic {
		method public boolean isRtl(char[], int, int);
		method public boolean isRtl(CharSequence, int, int);
		@@ -50108,6 +50086,14 @@ package android.text {
		field @Px public float underlineThickness;
		}

		public class TextShaper {
		method public static void shapeText(@NonNull CharSequence, @IntRange(from=0) int, @IntRange(from=0) int, @NonNull android.text.TextDirectionHeuristic, @NonNull android.text.TextPaint, @NonNull android.text.TextShaper.GlyphsConsumer);
		}

		public static interface TextShaper.GlyphsConsumer {
		method public void accept(@IntRange(from=0) int, @IntRange(from=0) int, @NonNull android.graphics.text.PositionedGlyphs, @NonNull android.text.TextPaint);
		}

		public class TextUtils {
		method @Deprecated public static CharSequence commaEllipsize(CharSequence, android.text.TextPaint, float, String, String);
		method public static CharSequence concat(java.lang.CharSequence...);

core/java/android/text/StyledTextShaper.java

deleted100644 → 0

+0 −67

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2020 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.annotation.NonNull;
		import android.graphics.Paint;
		import android.graphics.text.PositionedGlyphs;
		import android.graphics.text.TextShaper;

		import java.util.List;

		/**
		* Provides text shaping for multi-styled text.
		*
		* @see TextShaper#shapeTextRun(char[], int, int, int, int, float, float, boolean, Paint)
		* @see TextShaper#shapeTextRun(CharSequence, int, int, int, int, float, float, boolean, Paint)
		* @see StyledTextShaper#shapeText(CharSequence, int, int, TextDirectionHeuristic, TextPaint)
		*/
		public class StyledTextShaper {
		private StyledTextShaper() {}


		/**
		* Shape multi-styled text.
		*
		* @param text a styled text.
		* @param start a start index of shaping target in the text.
		* @param count a length of shaping target in the text.
		* @param dir a text direction.
		* @param paint a paint
		* @return a shape result.
		*/
		public static @NonNull List<PositionedGlyphs> shapeText(
		@NonNull CharSequence text, int start, int count,
		@NonNull TextDirectionHeuristic dir, @NonNull TextPaint paint) {
		MeasuredParagraph mp = MeasuredParagraph.buildForBidi(
		text, start, start + count, dir, null);
		TextLine tl = TextLine.obtain();
		try {
		tl.set(paint, text, start, start + count,
		mp.getParagraphDir(),
		mp.getDirections(start, start + count),
		false /* tabstop is not supported */,
		null,
		-1, -1 // ellipsis is not supported.
		);
		return tl.shape();
		} finally {
		TextLine.recycle(tl);
		}
		}

		}

core/java/android/text/TextLine.java

+25 −25

Original line number	Diff line number	Diff line
		@@ -24,7 +24,7 @@ import android.graphics.Canvas;
		import android.graphics.Paint;
		import android.graphics.Paint.FontMetricsInt;
		import android.graphics.text.PositionedGlyphs;
		import android.graphics.text.TextShaper;
		import android.graphics.text.TextRunShaper;
		import android.os.Build;
		import android.text.Layout.Directions;
		import android.text.Layout.TabStops;
		@@ -37,7 +37,6 @@ import com.android.internal.annotations.VisibleForTesting;
		import com.android.internal.util.ArrayUtils;

		import java.util.ArrayList;
		import java.util.List;

		/**
		* Represents a line of styled text, for measuring in visual order and
		@@ -312,8 +311,7 @@ public class TextLine {
		/**
		* Shape the TextLine.
		*/
		List<PositionedGlyphs> shape() {
		List<PositionedGlyphs> glyphs = new ArrayList<>();
		void shape(TextShaper.GlyphsConsumer consumer) {
		float horizontal = 0;
		float x = 0;
		final int runCount = mDirections.getRunCount();
		@@ -326,7 +324,7 @@ public class TextLine {
		int segStart = runStart;
		for (int j = mHasTabs ? runStart : runLimit; j <= runLimit; j++) {
		if (j == runLimit \|\| charAt(j) == TAB_CHAR) {
		horizontal += shapeRun(glyphs, segStart, j, runIsRtl, x + horizontal,
		horizontal += shapeRun(consumer, segStart, j, runIsRtl, x + horizontal,
		runIndex != (runCount - 1) \|\| j != mLen);

		if (j != runLimit) { // charAt(j) == TAB_CHAR
		@@ -336,7 +334,6 @@ public class TextLine {
		}
		}
		}
		return glyphs;
		}

		/**
		@@ -546,7 +543,7 @@ public class TextLine {
		/**
		* Shape a unidirectional (but possibly multi-styled) run of text.
		*
		* @param glyphs the output positioned glyphs list
		* @param consumer the consumer of the shape result
		* @param start the line-relative start
		* @param limit the line-relative limit
		* @param runIsRtl true if the run is right-to-left
		@@ -555,16 +552,17 @@ public class TextLine {
		* @return the signed width of the run, based on the paragraph direction.
		* Only valid if needWidth is true.
		*/
		private float shapeRun(List<PositionedGlyphs> glyphs, int start,
		private float shapeRun(TextShaper.GlyphsConsumer consumer, int start,
		int limit, boolean runIsRtl, float x, boolean needWidth) {

		if ((mDir == Layout.DIR_LEFT_TO_RIGHT) == runIsRtl) {
		float w = -measureRun(start, limit, limit, runIsRtl, null);
		handleRun(start, limit, limit, runIsRtl, null, glyphs, x + w, 0, 0, 0, null, false);
		handleRun(start, limit, limit, runIsRtl, null, consumer, x + w, 0, 0, 0, null, false);
		return w;
		}

		return handleRun(start, limit, limit, runIsRtl, null, glyphs, x, 0, 0, 0, null, needWidth);
		return handleRun(start, limit, limit, runIsRtl, null, consumer, x, 0, 0, 0, null,
		needWidth);
		}


		@@ -899,7 +897,7 @@ public class TextLine {
		* @param end the end of the text
		* @param runIsRtl true if the run is right-to-left
		* @param c the canvas, can be null if rendering is not needed
		* @param glyphs the output positioned glyph list, can be null if not necessary
		* @param consumer the output positioned glyph list, can be null if not necessary
		* @param x the edge of the run closest to the leading margin
		* @param top the top of the line
		* @param y the baseline
		@@ -913,7 +911,7 @@ public class TextLine {
		*/
		private float handleText(TextPaint wp, int start, int end,
		int contextStart, int contextEnd, boolean runIsRtl,
		Canvas c, List<PositionedGlyphs> glyphs, float x, int top, int y, int bottom,
		Canvas c, TextShaper.GlyphsConsumer consumer, float x, int top, int y, int bottom,
		FontMetricsInt fmi, boolean needWidth, int offset,
		@Nullable ArrayList<DecorationInfo> decorations) {

		@@ -946,8 +944,8 @@ public class TextLine {
		rightX = x + totalWidth;
		}

		if (glyphs != null) {
		shapeTextRun(glyphs, wp, start, end, contextStart, contextEnd, runIsRtl, leftX);
		if (consumer != null) {
		shapeTextRun(consumer, wp, start, end, contextStart, contextEnd, runIsRtl, leftX);
		}

		if (c != null) {
		@@ -1135,7 +1133,7 @@ public class TextLine {
		* @param limit the limit of the run
		* @param runIsRtl true if the run is right-to-left
		* @param c the canvas, can be null
		* @param glyphs the output positioned glyphs, can be null
		* @param consumer the output positioned glyphs, can be null
		* @param x the end of the run closest to the leading margin
		* @param top the top of the line
		* @param y the baseline
		@@ -1147,7 +1145,7 @@ public class TextLine {
		*/
		private float handleRun(int start, int measureLimit,
		int limit, boolean runIsRtl, Canvas c,
		List<PositionedGlyphs> glyphs, float x, int top, int y,
		TextShaper.GlyphsConsumer consumer, float x, int top, int y,
		int bottom, FontMetricsInt fmi, boolean needWidth) {

		if (measureLimit < start \|\| measureLimit > limit) {
		@@ -1180,7 +1178,7 @@ public class TextLine {
		wp.set(mPaint);
		wp.setStartHyphenEdit(adjustStartHyphenEdit(start, wp.getStartHyphenEdit()));
		wp.setEndHyphenEdit(adjustEndHyphenEdit(limit, wp.getEndHyphenEdit()));
		return handleText(wp, start, limit, start, limit, runIsRtl, c, glyphs, x, top,
		return handleText(wp, start, limit, start, limit, runIsRtl, c, consumer, x, top,
		y, bottom, fmi, needWidth, measureLimit, null);
		}

		@@ -1262,7 +1260,7 @@ public class TextLine {
		activePaint.setEndHyphenEdit(
		adjustEndHyphenEdit(activeEnd, mPaint.getEndHyphenEdit()));
		x += handleText(activePaint, activeStart, activeEnd, i, inext, runIsRtl, c,
		glyphs, x, top, y, bottom, fmi, needWidth \|\| activeEnd < measureLimit,
		consumer, x, top, y, bottom, fmi, needWidth \|\| activeEnd < measureLimit,
		Math.min(activeEnd, mlimit), mDecorations);

		activeStart = j;
		@@ -1288,7 +1286,7 @@ public class TextLine {
		adjustStartHyphenEdit(activeStart, mPaint.getStartHyphenEdit()));
		activePaint.setEndHyphenEdit(
		adjustEndHyphenEdit(activeEnd, mPaint.getEndHyphenEdit()));
		x += handleText(activePaint, activeStart, activeEnd, i, inext, runIsRtl, c, glyphs, x,
		x += handleText(activePaint, activeStart, activeEnd, i, inext, runIsRtl, c, consumer, x,
		top, y, bottom, fmi, needWidth \|\| activeEnd < measureLimit,
		Math.min(activeEnd, mlimit), mDecorations);
		}
		@@ -1327,7 +1325,7 @@ public class TextLine {
		/**
		* Shape a text run with the set-up paint.
		*
		* @param glyphs the output positioned glyphs list
		* @param consumer the output positioned glyphs list
		* @param paint the paint used to render the text
		* @param start the start of the run
		* @param end the end of the run
		@@ -1336,30 +1334,32 @@ public class TextLine {
		* @param runIsRtl true if the run is right-to-left
		* @param x the x position of the left edge of the run
		*/
		private void shapeTextRun(List<PositionedGlyphs> glyphs, TextPaint paint,
		private void shapeTextRun(TextShaper.GlyphsConsumer consumer, TextPaint paint,
		int start, int end, int contextStart, int contextEnd, boolean runIsRtl, float x) {

		int count = end - start;
		int contextCount = contextEnd - contextStart;
		PositionedGlyphs glyphs;
		if (mCharsValid) {
		glyphs.add(TextShaper.shapeTextRun(
		glyphs = TextRunShaper.shapeTextRun(
		mChars,
		start, count,
		contextStart, contextCount,
		x, 0f,
		runIsRtl,
		paint
		));
		);
		} else {
		glyphs.add(TextShaper.shapeTextRun(
		glyphs = TextRunShaper.shapeTextRun(
		mText,
		mStart + start, count,
		mStart + contextStart, contextCount,
		x, 0f,
		runIsRtl,
		paint
		));
		);
		}
		consumer.accept(start, count, glyphs, paint);
		}

core/java/android/text/TextShaper.java

0 → 100644

+229 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2020 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.annotation.IntRange;
		import android.annotation.NonNull;
		import android.graphics.Paint;
		import android.graphics.text.PositionedGlyphs;
		import android.graphics.text.TextRunShaper;

		/**
		* Provides text shaping for multi-styled text.
		*
		* Here is an example of animating text size and letter spacing for simple text.
		* <pre>
		* <code>
		* // In this example, shape the text once for start and end state, then animate between two shape
		* // result without re-shaping in each frame.
		* class SimpleAnimationView @JvmOverloads constructor(
		* context: Context,
		* attrs: AttributeSet? = null,
		* defStyleAttr: Int = 0
		* ) : View(context, attrs, defStyleAttr) {
		* private val textDir = TextDirectionHeuristics.LOCALE
		* private val text = "Hello, World." // The text to be displayed
		*
		* // Class for keeping drawing parameters.
		* data class DrawStyle(val textSize: Float, val alpha: Int)
		*
		* // The start and end text shaping result. This class will animate between these two.
		* private val start = mutableListOf<Pair<PositionedGlyphs, DrawStyle>>()
		* private val end = mutableListOf<Pair<PositionedGlyphs, DrawStyle>>()
		*
		* init {
		* val startPaint = TextPaint().apply {
		* alpha = 0 // Alpha only affect text drawing but not text shaping
		* textSize = 36f // TextSize affect both text shaping and drawing.
		* letterSpacing = 0f // Letter spacing only affect text shaping but not drawing.
		* }
		*
		* val endPaint = TextPaint().apply {
		* alpha = 255
		* textSize =128f
		* letterSpacing = 0.1f
		* }
		*
		* TextShaper.shapeText(text, 0, text.length, textDir, startPaint) { _, _, glyphs, paint ->
		* start.add(Pair(glyphs, DrawStyle(paint.textSize, paint.alpha)))
		* }
		* TextShaper.shapeText(text, 0, text.length, textDir, endPaint) { _, _, glyphs, paint ->
		* end.add(Pair(glyphs, DrawStyle(paint.textSize, paint.alpha)))
		* }
		* }
		*
		* override fun onDraw(canvas: Canvas) {
		* super.onDraw(canvas)
		*
		* // Set the baseline to the vertical center of the view.
		* canvas.translate(0f, height / 2f)
		*
		* // Assume the number of PositionedGlyphs are the same. If different, you may want to
		* // animate in a different way, e.g. cross fading.
		* start.zip(end) { (startGlyphs, startDrawStyle), (endGlyphs, endDrawStyle) ->
		* // Tween the style and set to paint.
		* paint.textSize = lerp(startDrawStyle.textSize, endDrawStyle.textSize, progress)
		* paint.alpha = lerp(startDrawStyle.alpha, endDrawStyle.alpha, progress)
		*
		* // Assume the number of glyphs are the same. If different, you may want to animate in
		* // a different way, e.g. cross fading.
		* require(startGlyphs.glyphCount() == endGlyphs.glyphCount())
		*
		* if (startGlyphs.glyphCount() == 0) return@zip
		*
		* var curFont = startGlyphs.getFont(0)
		* var drawStart = 0
		* for (i in 1 until startGlyphs.glyphCount()) {
		* // Assume the pair of Glyph ID and font is the same. If different, you may want
		* // to animate in a different way, e.g. cross fading.
		* require(startGlyphs.getGlyphId(i) == endGlyphs.getGlyphId(i))
		* require(startGlyphs.getFont(i) === endGlyphs.getFont(i))
		*
		* val font = startGlyphs.getFont(i)
		* if (curFont != font) {
		* drawGlyphs(canvas, startGlyphs, endGlyphs, drawStart, i, curFont, paint)
		* curFont = font
		* drawStart = i
		* }
		* }
		* if (drawStart != startGlyphs.glyphCount() - 1) {
		* drawGlyphs(canvas, startGlyphs, endGlyphs, drawStart, startGlyphs.glyphCount(),
		* curFont, paint)
		* }
		* }
		* }
		*
		* // Draws Glyphs for the same font run.
		* private fun drawGlyphs(canvas: Canvas, startGlyph: PositionedGlyphs,
		* endGlyph: PositionedGlyphs, start: Int, end: Int, font: Font,
		* paint: Paint) {
		* var cacheIndex = 0
		* for (i in start until end) {
		* intArrayCache[cacheIndex] = startGlyph.getGlyphId(i)
		* // The glyph positions are different from start to end since they are shaped
		* // with different letter spacing. Use linear interpolation for positions
		* // during animation.
		* floatArrayCache[cacheIndex * 2] =
		* lerp(startGlyph.getGlyphX(i), endGlyph.getGlyphX(i), progress)
		* floatArrayCache[cacheIndex * 2 + 1] =
		* lerp(startGlyph.getGlyphY(i), endGlyph.getGlyphY(i), progress)
		* if (cacheIndex == CACHE_SIZE) { // Cached int array is full. Flashing.
		* canvas.drawGlyphs(
		* intArrayCache, 0, // glyphID array and its starting offset
		* floatArrayCache, 0, // position array and its starting offset
		* cacheIndex, // glyph count
		* font,
		* paint
		* )
		* cacheIndex = 0
		* }
		* cacheIndex++
		* }
		* if (cacheIndex != 0) {
		* canvas.drawGlyphs(
		* intArrayCache, 0, // glyphID array and its starting offset
		* floatArrayCache, 0, // position array and its starting offset
		* cacheIndex, // glyph count
		* font,
		* paint
		* )
		* }
		* }
		*
		* // Linear Interpolator
		* private fun lerp(start: Float, end: Float, t: Float) = start * (1f - t) + end * t
		* private fun lerp(start: Int, end: Int, t: Float) = (start * (1f - t) + end * t).toInt()
		*
		* // The animation progress.
		* var progress: Float = 0f
		* set(value) {
		* field = value
		* invalidate()
		* }
		*
		* // working copy of paint.
		* private val paint = Paint()
		*
		* // Array cache for reducing allocation during drawing.
		* private var intArrayCache = IntArray(CACHE_SIZE)
		* private var floatArrayCache = FloatArray(CACHE_SIZE * 2)
		* }
		* </code>
		* </pre>
		* @see TextRunShaper#shapeTextRun(char[], int, int, int, int, float, float, boolean, Paint)
		* @see TextRunShaper#shapeTextRun(CharSequence, int, int, int, int, float, float, boolean, Paint)
		* @see TextShaper#shapeText(CharSequence, int, int, TextDirectionHeuristic, TextPaint,
		* GlyphsConsumer)
		*/
		public class TextShaper {
		private TextShaper() {}

		/**
		* An consumer interface for accepting text shape result.
		*/
		public interface GlyphsConsumer {
		/**
		* Accept text shape result.
		*
		* The implementation must not keep reference of paint since it will be mutated for the
		* subsequent styles. Also, for saving heap size, keep only necessary members in the
		* {@link TextPaint} instead of copying {@link TextPaint} object.
		*
		* @param start The start index of the shaped text.
		* @param count The length of the shaped text.
		* @param glyphs The shape result.
		* @param paint The paint to be used for drawing.
		*/
		void accept(
		@IntRange(from = 0) int start,
		@IntRange(from = 0) int count,
		@NonNull PositionedGlyphs glyphs,
		@NonNull TextPaint paint);
		}

		/**
		* Shape multi-styled text.
		*
		* @param text a styled text.
		* @param start a start index of shaping target in the text.
		* @param count a length of shaping target in the text.
		* @param dir a text direction.
		* @param paint a paint
		* @param consumer a consumer of the shape result.
		*/
		public static void shapeText(
		@NonNull CharSequence text, @IntRange(from = 0) int start,
		@IntRange(from = 0) int count, @NonNull TextDirectionHeuristic dir,
		@NonNull TextPaint paint, @NonNull GlyphsConsumer consumer) {
		MeasuredParagraph mp = MeasuredParagraph.buildForBidi(
		text, start, start + count, dir, null);
		TextLine tl = TextLine.obtain();
		try {
		tl.set(paint, text, start, start + count,
		mp.getParagraphDir(),
		mp.getDirections(start, start + count),
		false /* tabstop is not supported */,
		null,
		-1, -1 // ellipsis is not supported.
		);
		tl.shape(consumer);
		} finally {
		TextLine.recycle(tl);
		}
		}

		}

core/tests/coretests/src/android/text/TextShaperTest.java

+5 −10

Original line number	Diff line number	Diff line
		@@ -18,16 +18,12 @@ package android.text;

		import static com.google.common.truth.Truth.assertThat;

		import android.graphics.text.PositionedGlyphs;

		import androidx.test.filters.SmallTest;
		import androidx.test.runner.AndroidJUnit4;

		import org.junit.Test;
		import org.junit.runner.RunWith;

		import java.util.List;

		@SmallTest
		@RunWith(AndroidJUnit4.class)
		public class TextShaperTest {
		@@ -36,11 +32,10 @@ public class TextShaperTest {
		public void testFontWithPath() {
		TextPaint p = new TextPaint();
		p.setFontFeatureSettings("'wght' 900");
		List<PositionedGlyphs> glyphs = StyledTextShaper.shapeText("a", 0, 1,
		TextDirectionHeuristics.LTR, p);
		assertThat(glyphs.size()).isEqualTo(1);
		TextShaper.shapeText("a", 0, 1, TextDirectionHeuristics.LTR, p,
		(start, end, glyphs, paint) -> {
		// This test only passes if the font of the Latin font is variable font.
		assertThat(glyphs.get(0).getFont(0).getFile()).isNotNull();

		assertThat(glyphs.getFont(0).getFile()).isNotNull();
		});
		}
		}