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mastodon-app-ufficiale-android
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Improve rendering of block elements in rich text 

fixes #907
This commit is contained in:
Grishka 2024-10-24 01:37:28 +03:00
parent 1ad2d08e27
commit f1b30f251c
1 changed files with 20 additions and 10 deletions
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30
mastodon/src/main/java/org/joinmastodon/android/ui/text/HtmlParser.java
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@ -8,8 +8,6 @@ import android.text.Spanned;
import android.text.TextUtils;
import android.text.style.BackgroundColorSpan;
import android.text.style.ForegroundColorSpan;
import android.text.style.LineHeightSpan;
import android.text.style.RelativeSizeSpan;
import android.text.style.StrikethroughSpan;
import android.text.style.StyleSpan;
import android.widget.TextView;
@ -98,6 +96,7 @@ public class HtmlParser{
final SpannableStringBuilder ssb=new SpannableStringBuilder();
Jsoup.parseBodyFragment(source).body().traverse(new NodeVisitor(){
private final ArrayList<SpanInfo> openSpans=new ArrayList<>();
private boolean lastElementWasBlock=false;
private boolean isInsidePre(){
for(SpanInfo si:openSpans){
@ -119,6 +118,13 @@ public class HtmlParser{
@Override
public void head(@NonNull Node node, int depth){
if(node instanceof TextNode textNode){
if(lastElementWasBlock){
lastElementWasBlock=false;
if(!textNode.text().trim().isEmpty()){
ssb.append('\n');
ssb.append("\n", new SpacerSpan(1, V.dp(8)), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
}
}
if(isInsidePre()){
ssb.append(textNode.getWholeText().stripTrailing());
}else{
@ -128,6 +134,11 @@ public class HtmlParser{
ssb.append(text);
}
}else if(node instanceof Element el){
if(lastElementWasBlock || (el.isBlock() && !"li".equals(el.nodeName()) && !"ul".equals(el.nodeName()) && !"ol".equals(el.nodeName()) && ssb.length()>0 && ssb.charAt(ssb.length()-1)!='\n')){
lastElementWasBlock=false;
ssb.append('\n');
ssb.append("\n", new SpacerSpan(1, V.dp(8)), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
}
switch(el.nodeName()){
case "a" -> {
Object linkObject=null;
@ -208,16 +219,9 @@ public class HtmlParser{
public void tail(@NonNull Node node, int depth){
if(node instanceof Element el){
String name=el.nodeName();
lastElementWasBlock|=el.isBlock();
if("span".equals(name) && el.hasClass("ellipsis")){
ssb.append("…", new DeleteWhenCopiedSpan(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
}else if("p".equals(name) || "ol".equals(name) || "ul".equals(name)){
if(node.nextSibling()!=null && "body".equals(node.parent().nodeName())){
ssb.append('\n');
ssb.append("\n", new SpacerSpan(1, V.dp(8)), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
}
}else if("pre".equals(name)){
if(node.nextSibling()!=null)
ssb.append("\n");
}
if(!openSpans.isEmpty()){
SpanInfo si=openSpans.get(openSpans.size()-1);
@ -234,6 +238,12 @@ public class HtmlParser{
}
}
});
int trailingTrimLength=0;
for(int i=ssb.length()-1;i>=0 && Character.isWhitespace(ssb.charAt(i));i--){
trailingTrimLength++;
}
if(trailingTrimLength>0)
ssb.replace(ssb.length()-trailingTrimLength, ssb.length(), "");
if(!emojis.isEmpty())
parseCustomEmoji(ssb, emojis);
return ssb;