Twidere-App-Android-Twitter.../twidere/src/main/java/org/mariotaku/twidere/view/HandleSpanClickTextView.java

103 lines
3.5 KiB
Java

/*
* Twidere - 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.mariotaku.twidere.view;
import android.content.Context;
import android.support.annotation.NonNull;
import android.text.Layout;
import android.text.Spannable;
import android.text.SpannableString;
import android.text.style.ClickableSpan;
import android.util.AttributeSet;
import android.view.MotionEvent;
import org.mariotaku.twidere.view.themed.ThemedTextView;
public class HandleSpanClickTextView extends ThemedTextView {
private boolean mLongClickPerformed;
public HandleSpanClickTextView(final Context context) {
super(context);
}
public HandleSpanClickTextView(final Context context, final AttributeSet attrs) {
super(context, attrs);
}
public HandleSpanClickTextView(final Context context, final AttributeSet attrs, final int defStyle) {
super(context, attrs, defStyle);
}
@Override
public boolean onTouchEvent(@NonNull final MotionEvent event) {
final Spannable buffer = SpannableString.valueOf(getText());
final int action = event.getAction();
if (action == MotionEvent.ACTION_UP || action == MotionEvent.ACTION_DOWN) {
int x = (int) event.getX();
int y = (int) event.getY();
x -= getTotalPaddingLeft();
y -= getTotalPaddingTop();
x += getScrollX();
y += getScrollY();
final Layout layout = getLayout();
final int line = layout.getLineForVertical(y);
final int off;
try {
off = layout.getOffsetForHorizontal(line, x);
} catch (IndexOutOfBoundsException e) {
throw new IndexOutOfBoundsException("Line count " + layout.getLineCount() +
", line for y " + y + " is " + line + ", x is " + x);
}
final float lineWidth = layout.getLineWidth(line);
final ClickableSpan[] links = buffer.getSpans(off, off, ClickableSpan.class);
if (links.length != 0 && x <= lineWidth) {
final ClickableSpan link = links[0];
if (action == MotionEvent.ACTION_UP) {
setClickable(false);
if (!mLongClickPerformed) {
link.onClick(this);
}
return true;
} else {
mLongClickPerformed = false;
setClickable(true);
}
} else {
setClickable(false);
}
}
return super.onTouchEvent(event);
}
@Override
public boolean performLongClick() {
final boolean result = super.performLongClick();
mLongClickPerformed = true;
return result;
}
}