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/*
* Nextcloud Notes application
*
* @author Mario Danic
* Copyright (C) 2018 Mario Danic <mario@lovelyhq.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package it.niedermann.owncloud.notes.shared.util;
import android.content.Context;
import android.graphics.Color;
import android.text.Spannable;
import android.text.TextPaint;
import android.text.TextUtils;
import android.text.style.MetricAffectingSpan;
import androidx.annotation.ColorInt;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import it.niedermann.android.util.ColorUtil;
import it.niedermann.owncloud.notes.NotesApplication;
import it.niedermann.owncloud.notes.R;
import it.niedermann.owncloud.notes.branding.BrandingUtil;
public class DisplayUtils {
private DisplayUtils() {
}
public static Spannable searchAndColor(Spannable spannable, CharSequence searchText, @NonNull Context context, @Nullable Integer current, @ColorInt int mainColor, @ColorInt int textColor) {
CharSequence text = spannable.toString();
Object[] spansToRemove = spannable.getSpans(0, text.length(), Object.class);
for (Object span : spansToRemove) {
if (span instanceof SearchSpan)
spannable.removeSpan(span);
}
if (TextUtils.isEmpty(text) || TextUtils.isEmpty(searchText)) {
return spannable;
}
Matcher m = Pattern.compile(searchText.toString(), Pattern.CASE_INSENSITIVE | Pattern.LITERAL)
.matcher(text);
int i = 1;
while (m.find()) {
int start = m.start();
int end = m.end();
spannable.setSpan(new SearchSpan(context, mainColor, textColor, (current != null && i == current)), start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
i++;
}
return spannable;
}
static class SearchSpan extends MetricAffectingSpan {
private final boolean current;
@NonNull
Context context;
@ColorInt
private final int mainColor;
@ColorInt
private final int textColor;
@ColorInt
private final int highlightColor;
SearchSpan(@NonNull Context context, @ColorInt int mainColor, @ColorInt int textColor, boolean current) {
this.context = context;
this.mainColor = mainColor;
this.textColor = textColor;
this.current = current;
this.highlightColor = context.getResources().getColor(R.color.bg_highlighted);
}
@Override
public void updateDrawState(TextPaint tp) {
if (current) {
if (NotesApplication.isDarkThemeActive(context)) {
if (ColorUtil.INSTANCE.isColorDark(mainColor)) {
tp.bgColor = Color.WHITE;
tp.setColor(mainColor);
} else {
tp.bgColor = mainColor;
tp.setColor(Color.BLACK);
}
} else {
if (ColorUtil.INSTANCE.isColorDark(mainColor)) {
tp.bgColor = mainColor;
tp.setColor(Color.WHITE);
} else {
if (NotesColorUtil.contrastRatioIsSufficient(mainColor, highlightColor)) {
tp.bgColor = highlightColor;
} else {
tp.bgColor = Color.BLACK;
}
tp.setColor(mainColor);
}
}
} else {
tp.bgColor = highlightColor;
tp.setColor(BrandingUtil.getSecondaryForegroundColorDependingOnTheme(context, mainColor));
}
tp.setFakeBoldText(true);
}
@Override
public void updateMeasureState(@NonNull TextPaint tp) {
tp.setFakeBoldText(true);
}
}
}
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