package com.lqr.emoji;
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import android.content.Context;
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import android.graphics.drawable.Drawable;
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import android.net.Uri;
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import android.text.Editable;
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import android.text.SpannableString;
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import android.text.SpannableStringBuilder;
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import android.text.Spanned;
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import android.text.TextPaint;
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import android.text.TextUtils;
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import android.text.style.ClickableSpan;
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import android.text.style.ImageSpan;
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import android.view.View;
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import android.widget.EditText;
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import android.widget.TextView;
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import java.util.ArrayList;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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/**
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* CSDN_LQR
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* 图文混排工具
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*/
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public class MoonUtils {
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private static final float DEF_SCALE = 0.6f;
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private static final float SMALL_SCALE = 0.6F;
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/**
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* 具体类型的view设置内容
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*
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* @param textView
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* @param mSpannableString
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*/
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private static void viewSetText(View textView, SpannableString mSpannableString) {
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if (textView instanceof TextView) {
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TextView tv = (TextView) textView;
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tv.setText(mSpannableString);
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} else if (textView instanceof EditText) {
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EditText et = (EditText) textView;
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et.setText(mSpannableString);
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}
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}
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private static SpannableString replaceEmoticons(Context context, String value, float scale, int align) {
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if (TextUtils.isEmpty(value)) {
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value = "";
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}
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final char[] chars = value.toCharArray();
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final SpannableStringBuilder ssb = new SpannableStringBuilder(value);
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int codePoint;
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boolean isSurrogatePair;
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for (int i = 0; i < chars.length; i++) {
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if (Character.isHighSurrogate(chars[i])) {
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continue;
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} else if (Character.isLowSurrogate(chars[i])) {
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if (i > 0 && Character.isSurrogatePair(chars[i - 1], chars[i])) {
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codePoint = Character.toCodePoint(chars[i - 1], chars[i]);
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isSurrogatePair = true;
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} else {
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continue;
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}
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} else {
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codePoint = (int) chars[i];
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isSurrogatePair = false;
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}
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if (EmojiManager.contains(codePoint)) {
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Drawable d = getEmotDrawable(context, codePoint, scale);
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if (d != null) {
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ImageSpan span = new ImageSpan(d, align);
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ssb.setSpan(span, isSurrogatePair ? i - 1 : i, i + 1, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
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}
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}
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}
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return SpannableString.valueOf(ssb);
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}
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private static Pattern mATagPattern = Pattern.compile("<a.*?>.*?</a>");
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public static SpannableString makeSpannableStringTags(Context context, String value, float scale, int align) {
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return makeSpannableStringTags(context, value, DEF_SCALE, align, true);
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}
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public static SpannableString makeSpannableStringTags(Context context, String value, float scale, int align, boolean bTagClickable) {
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ArrayList<ATagSpan> tagSpans = new ArrayList<ATagSpan>();
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if (TextUtils.isEmpty(value)) {
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value = "";
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}
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//a标签需要替换原始文本,放在moonutil类中
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Matcher aTagMatcher = mATagPattern.matcher(value);
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int start = 0;
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int end = 0;
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while (aTagMatcher.find()) {
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start = aTagMatcher.start();
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end = aTagMatcher.end();
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String atagString = value.substring(start, end);
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ATagSpan tagSpan = getTagSpan(atagString);
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value = value.substring(0, start) + tagSpan.getTag() + value.substring(end);
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tagSpan.setRange(start, start + tagSpan.getTag().length());
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tagSpans.add(tagSpan);
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aTagMatcher = mATagPattern.matcher(value);
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}
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final char[] chars = value.toCharArray();
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final SpannableStringBuilder ssb = new SpannableStringBuilder(value);
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int codePoint;
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boolean isSurrogatePair;
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for (int i = 0; i < chars.length; i++) {
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if (Character.isHighSurrogate(chars[i])) {
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continue;
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} else if (Character.isLowSurrogate(chars[i])) {
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if (i > 0 && Character.isSurrogatePair(chars[i - 1], chars[i])) {
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codePoint = Character.toCodePoint(chars[i - 1], chars[i]);
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isSurrogatePair = true;
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} else {
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continue;
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}
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} else {
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codePoint = (int) chars[i];
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isSurrogatePair = false;
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}
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if (EmojiManager.contains(codePoint)) {
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Drawable d = getEmotDrawable(context, codePoint, scale);
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if (d != null) {
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ImageSpan span = new ImageSpan(d, align);
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ssb.setSpan(span, isSurrogatePair ? i - 1 : i, i + 1, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
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}
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}
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}
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return SpannableString.valueOf(ssb);
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}
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/**
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* 识别表情
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*/
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public static void identifyFaceExpression(Context context,
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View textView, String value, int align) {
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identifyFaceExpression(context, textView, value, align, DEF_SCALE);
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}
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/**
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* 识别表情和标签（如：只需显示a标签对应的文本）
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*/
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public static void identifyFaceExpressionAndATags(Context context,
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View textView, String value, int align) {
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SpannableString mSpannableString = makeSpannableStringTags(context, value, DEF_SCALE, align);
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viewSetText(textView, mSpannableString);
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}
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/**
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* 识别表情，可设置缩放大小
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*/
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public static void identifyFaceExpression(Context context,
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View textView, String value, int align, float scale) {
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SpannableString mSpannableString = replaceEmoticons(context, value, scale, align);
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viewSetText(textView, mSpannableString);
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}
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/**
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* 识别表情和标签（如：只需显示a标签对应的文本），可设置缩放大小
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*/
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public static void identifyFaceExpressionAndTags(Context context,
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View textView, String value, int align, float scale) {
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SpannableString mSpannableString = makeSpannableStringTags(context, value, scale, align, false);
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viewSetText(textView, mSpannableString);
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}
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/**
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* EditText用来转换表情文字的方法，如果没有使用EmoticonPickerView的attachEditText方法，则需要开发人员手动调用方法来又识别EditText中的表情
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*/
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public static void replaceEmoticons(Context context, Editable editable, int start, int count) {
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if (count <= 0 || editable.length() < start + count)
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return;
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CharSequence s = editable.subSequence(start, start + count);
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final char[] chars = s.toString().toCharArray();
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int codePoint;
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boolean isSurrogatePair;
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for (int i = 0; i < chars.length; i++) {
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if (Character.isHighSurrogate(chars[i])) {
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continue;
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} else if (Character.isLowSurrogate(chars[i])) {
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if (i > 0 && Character.isSurrogatePair(chars[i - 1], chars[i])) {
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codePoint = Character.toCodePoint(chars[i - 1], chars[i]);
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isSurrogatePair = true;
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} else {
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continue;
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}
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} else {
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codePoint = (int) chars[i];
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isSurrogatePair = false;
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}
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if (EmojiManager.contains(codePoint)) {
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Drawable d = getEmotDrawable(context, codePoint, SMALL_SCALE);
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if (d != null) {
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ImageSpan span = new ImageSpan(d, ImageSpan.ALIGN_BOTTOM);
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editable.setSpan(span, isSurrogatePair ? i - 1 : i, i + 1, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
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}
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}
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}
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}
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private static Drawable getEmotDrawable(Context context, int code, float scale) {
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Drawable drawable = EmojiManager.getDrawable(context, code);
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// scale
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if (drawable != null) {
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int width = (int) (drawable.getIntrinsicWidth() * scale);
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int height = (int) (drawable.getIntrinsicHeight() * scale);
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drawable.setBounds(0, 0, width, height);
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}
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return drawable;
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}
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private static ATagSpan getTagSpan(String text) {
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String href = null;
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String tag = null;
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if (text.toLowerCase().contains("href")) {
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int start = text.indexOf("\"");
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int end = text.indexOf("\"", start + 1);
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if (end > start)
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href = text.substring(start + 1, end);
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}
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int start = text.indexOf(">");
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int end = text.indexOf("<", start);
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if (end > start)
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tag = text.substring(start + 1, end);
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return new ATagSpan(tag, href);
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}
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private static class ATagSpan extends ClickableSpan {
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private int start;
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private int end;
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private String mUrl;
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private String tag;
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ATagSpan(String tag, String url) {
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this.tag = tag;
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this.mUrl = url;
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}
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@Override
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public void updateDrawState(TextPaint ds) {
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super.updateDrawState(ds);
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ds.setUnderlineText(true);
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}
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public String getTag() {
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return tag;
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}
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public void setRange(int start, int end) {
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this.start = start;
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this.end = end;
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}
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@Override
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public void onClick(View widget) {
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try {
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if (TextUtils.isEmpty(mUrl))
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return;
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Uri uri = Uri.parse(mUrl);
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String scheme = uri.getScheme();
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if (TextUtils.isEmpty(scheme)) {
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mUrl = "http://" + mUrl;
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}
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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}
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}
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