/*
* Firetweet - Twitter client for Android
*
* Copyright (C) 2012-2014 Mariotaku Lee <mariotaku.lee@gmail.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 org.getlantern.firetweet.text;
import android.graphics.Paint.FontMetricsInt;
import android.text.Spanned;
import android.text.style.LineHeightSpan;
/**
* Created by mariotaku on 14/11/22.
*/
public class ParagraphSpacingSpan implements LineHeightSpan {
private final float spacingMultiplier;
public ParagraphSpacingSpan(float spacingMultiplier) {
this.spacingMultiplier = spacingMultiplier;
}
@Override
public void chooseHeight(CharSequence text, int start, int end,
int spanstartv, int v, FontMetricsInt fm) {
Spanned spanned = (Spanned) text;
int en = spanned.getSpanEnd(this);
if (end - 1 == en) {
final int extra = Math.round((fm.bottom - fm.top) * (spacingMultiplier - 1));
fm.descent += extra;
fm.bottom += extra;
}
}
}