124 lines
2.7 KiB
Java
124 lines
2.7 KiB
Java
/*
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* Pixel Dungeon
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* Copyright (C) 2012-2015 Oleg Dolya
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*
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* Shattered Pixel Dungeon
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* Copyright (C) 2014-2019 Evan Debenham
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*/
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package com.watabou.noosa;
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import com.watabou.input.PointerEvent;
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import com.watabou.utils.Signal;
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public class PointerArea extends Visual implements Signal.Listener<PointerEvent> {
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// Its target can be pointerarea itself
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public Visual target;
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protected PointerEvent curEvent = null;
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//if true, this PointerArea will always block input, even when it is inactive
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public boolean blockWhenInactive = false;
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public PointerArea(Visual target ) {
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super( 0, 0, 0, 0 );
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this.target = target;
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PointerEvent.addPointerListener( this );
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}
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public PointerArea(float x, float y, float width, float height ) {
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super( x, y, width, height );
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this.target = this;
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visible = false;
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PointerEvent.addPointerListener( this );
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}
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@Override
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public boolean onSignal( PointerEvent event ) {
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boolean hit = event != null && target.overlapsScreenPoint( (int)event.current.x, (int)event.current.y );
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if (!isActive()) {
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return (hit && blockWhenInactive);
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}
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if (hit) {
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boolean returnValue = (event.down || event == curEvent);
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if (event.down) {
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if (curEvent == null) {
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curEvent = event;
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}
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onPointerDown( event );
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} else {
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onPointerUp( event );
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if (curEvent == event) {
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curEvent = null;
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onClick( event );
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}
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}
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return returnValue;
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} else {
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if (event == null && curEvent != null) {
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onDrag(curEvent);
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}
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else if (curEvent != null && !event.down) {
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onPointerUp( event );
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curEvent = null;
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}
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return false;
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}
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}
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protected void onPointerDown( PointerEvent event ) {
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}
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protected void onPointerUp( PointerEvent event) {
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}
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protected void onClick( PointerEvent event ) {
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}
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protected void onDrag( PointerEvent event ) {
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}
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public void reset() {
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curEvent = null;
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}
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@Override
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public void destroy() {
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PointerEvent.removePointerListener( this );
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super.destroy();
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}
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}
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