Sanitize latex text placeholder (no new lines)
This commit is contained in:
Dimitry Ivanov
parent
85f201702e
commit
8daa59709b
@ -8,7 +8,7 @@ android.enableJetifier=true
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android.enableBuildCache=true
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android.buildCacheDir=build/pre-dex-cache
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VERSION_NAME=4.0.1
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VERSION_NAME=4.0.2-SNAPSHOT
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GROUP=io.noties.markwon
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POM_DESCRIPTION=Markwon markdown for Android
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@ -16,8 +16,14 @@ android {
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dependencies {
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api project(':markwon-core')
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api project(':markwon-image')
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api deps['jlatexmath-android']
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deps['test'].with {
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testImplementation it['junit']
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testImplementation it['robolectric']
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testImplementation it['mockito']
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}
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}
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registerArtifact(this)
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@ -12,6 +12,7 @@ import android.widget.TextView;
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import androidx.annotation.NonNull;
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import androidx.annotation.Nullable;
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import androidx.annotation.Px;
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import androidx.annotation.VisibleForTesting;
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import org.commonmark.parser.Parser;
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@ -84,8 +85,8 @@ public class JLatexMathPlugin extends AbstractMarkwonPlugin {
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// @since 4.0.0
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private final int paddingHorizontal;
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// @since 4.0.0
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// @since 4.0.0
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private final int paddingVertical;
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// @since 4.0.0
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@ -132,7 +133,10 @@ public class JLatexMathPlugin extends AbstractMarkwonPlugin {
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final int length = visitor.length();
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visitor.builder().append(latex);
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// @since 4.0.2 we cannot append _raw_ latex as a placeholder-text,
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// because Android will draw formula for each line of text, thus
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// leading to formula duplicated (drawn on each line of text)
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visitor.builder().append(prepareLatexTextPlaceholder(latex));
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final MarkwonConfiguration configuration = visitor.configuration();
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@ -161,6 +165,13 @@ public class JLatexMathPlugin extends AbstractMarkwonPlugin {
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AsyncDrawableScheduler.schedule(textView);
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}
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// @since 4.0.2
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@VisibleForTesting
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@NonNull
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static String prepareLatexTextPlaceholder(@NonNull String latex) {
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return latex.replace('\n', ' ').trim();
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}
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public static class Builder {
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private final float textSize;
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@ -350,6 +361,8 @@ public class JLatexMathPlugin extends AbstractMarkwonPlugin {
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final Rect imageBounds = drawable.getResult().getBounds();
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final int canvasWidth = drawable.getLastKnownCanvasWidth();
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// todo: scale down when formula is greater than width (keep ratio and apply height)
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if (fitCanvas
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&& imageBounds.width() < canvasWidth) {
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// we increase only width (keep height as-is)
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@ -0,0 +1,113 @@
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package io.noties.markwon.ext.latex;
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import androidx.annotation.NonNull;
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import org.commonmark.parser.Parser;
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import org.commonmark.parser.block.BlockParserFactory;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import org.mockito.ArgumentCaptor;
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import org.robolectric.RobolectricTestRunner;
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import org.robolectric.annotation.Config;
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import java.util.concurrent.ExecutorService;
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import io.noties.markwon.MarkwonConfiguration;
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import io.noties.markwon.MarkwonVisitor;
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import io.noties.markwon.SpannableBuilder;
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import static org.junit.Assert.assertFalse;
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import static org.junit.Assert.assertTrue;
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import static org.mockito.ArgumentMatchers.any;
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import static org.mockito.ArgumentMatchers.eq;
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import static org.mockito.Mockito.mock;
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import static org.mockito.Mockito.times;
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import static org.mockito.Mockito.verify;
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import static org.mockito.Mockito.when;
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@RunWith(RobolectricTestRunner.class)
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@Config(manifest = Config.NONE)
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public class JLatexMathPluginTest {
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@Test
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public void latex_text_placeholder() {
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// text placeholder cannot have new-line characters and should be trimmed from ends
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final String[] in = {
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"hello",
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"he\nllo",
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" hello\n\n",
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"\n\nhello\n\n",
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"\n",
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" \nhello\n "
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};
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for (String latex : in) {
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final String placeholder = JLatexMathPlugin.prepareLatexTextPlaceholder(latex);
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assertTrue(placeholder, placeholder.indexOf('\n') < 0);
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if (placeholder.length() > 0) {
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assertFalse(placeholder, Character.isWhitespace(placeholder.charAt(0)));
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assertFalse(placeholder, Character.isWhitespace(placeholder.charAt(placeholder.length() - 1)));
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}
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}
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}
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@Test
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public void block_parser_registered() {
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final JLatexMathPlugin plugin = JLatexMathPlugin.create(0);
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final Parser.Builder builder = mock(Parser.Builder.class);
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plugin.configureParser(builder);
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verify(builder, times(1)).customBlockParserFactory(any(BlockParserFactory.class));
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}
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@Test
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public void visitor_registered() {
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final JLatexMathPlugin plugin = JLatexMathPlugin.create(0);
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final MarkwonVisitor.Builder builder = mock(MarkwonVisitor.Builder.class);
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plugin.configureVisitor(builder);
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//noinspection unchecked
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verify(builder, times(1))
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.on(eq(JLatexMathBlock.class), any(MarkwonVisitor.NodeVisitor.class));
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}
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@Test
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public void visit() {
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final JLatexMathPlugin plugin = JLatexMathPlugin.create(0, new JLatexMathPlugin.BuilderConfigure() {
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@Override
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public void configureBuilder(@NonNull JLatexMathPlugin.Builder builder) {
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// no async in test (nooped for this test)
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builder.executorService(mock(ExecutorService.class));
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}
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});
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final MarkwonVisitor.Builder builder = mock(MarkwonVisitor.Builder.class);
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final ArgumentCaptor<MarkwonVisitor.NodeVisitor> captor =
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ArgumentCaptor.forClass(MarkwonVisitor.NodeVisitor.class);
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plugin.configureVisitor(builder);
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//noinspection unchecked
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verify(builder, times(1))
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.on(eq(JLatexMathBlock.class), captor.capture());
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final MarkwonVisitor.NodeVisitor nodeVisitor = captor.getValue();
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final MarkwonVisitor visitor = mock(MarkwonVisitor.class);
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final JLatexMathBlock block = mock(JLatexMathBlock.class);
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when(block.latex()).thenReturn(" first\nsecond\n ");
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final SpannableBuilder spannableBuilder = mock(SpannableBuilder.class);
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when(visitor.builder()).thenReturn(spannableBuilder);
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when(visitor.configuration()).thenReturn(mock(MarkwonConfiguration.class));
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//noinspection unchecked
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nodeVisitor.visit(visitor, block);
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verify(block, times(1)).latex();
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verify(visitor, times(1)).length();
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final ArgumentCaptor<String> stringArgumentCaptor = ArgumentCaptor.forClass(String.class);
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verify(spannableBuilder, times(1)).append(stringArgumentCaptor.capture());
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final String placeholder = stringArgumentCaptor.getValue();
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assertTrue(placeholder, placeholder.indexOf('\n') < 0);
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verify(visitor, times(1)).setSpans(eq(0), any());
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}
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}
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@ -68,20 +68,23 @@ public class LatexActivity extends Activity {
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.build();
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if (true) {
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// final String l = "$$\n" +
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// " P(X=r)=\\frac{\\lambda^r e^{-\\lambda}}{r!}\n" +
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// "$$\n" +
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// "\n" +
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// "$$\n" +
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// " P(X<r)=P(X<r-1)\n" +
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// "$$\n" +
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// "\n" +
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// "$$\n" +
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// " P(X>r)=1-P(X<r=1)\n" +
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// "$$\n" +
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// "\n" +
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// "$$\n" +
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// " \\text{Variance} = \\lambda\n" +
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// "$$";
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final String l = "$$ \n" +
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" P(X=r)=\\frac{\\lambda^r e^{-\\lambda}}{r!}\n" +
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"$$\n" +
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"\n" +
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"$$\n" +
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" P(X<r)=P(X<r-1)\n" +
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"$$\n" +
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"\n" +
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"$$\n" +
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" P(X>r)=1-P(X<r=1)\n" +
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"$$\n" +
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"\n" +
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"$$\n" +
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" \\text{Variance} = \\lambda\n" +
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" \\sigma_T^2 = \\frac{1-p}{p^2}\n" +
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"$$";
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markwon.setMarkdown(textView, l);
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return;
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