Evan Debenham
aed303672a
changed package and application names to differentiate from main PD release
150 lines
3.5 KiB
Java
150 lines
3.5 KiB
Java
/*
|
|
* Pixel Dungeon
|
|
* Copyright (C) 2012-2014 Oleg Dolya
|
|
*
|
|
* 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 com.shatteredpixel.shatteredpixeldungeon.ui;
|
|
|
|
import com.watabou.input.Touchscreen.Touch;
|
|
import com.watabou.noosa.Camera;
|
|
import com.watabou.noosa.TouchArea;
|
|
import com.watabou.noosa.ui.Component;
|
|
import com.shatteredpixel.shatteredpixeldungeon.scenes.PixelScene;
|
|
import com.watabou.utils.Point;
|
|
import com.watabou.utils.PointF;
|
|
|
|
public class ScrollPane extends Component {
|
|
|
|
protected TouchController controller;
|
|
protected Component content;
|
|
|
|
protected float minX;
|
|
protected float minY;
|
|
protected float maxX;
|
|
protected float maxY;
|
|
|
|
public ScrollPane( Component content ) {
|
|
super();
|
|
|
|
this.content = content;
|
|
addToBack( content );
|
|
|
|
width = content.width();
|
|
height = content.height();
|
|
|
|
content.camera = new Camera( 0, 0, 1, 1, PixelScene.defaultZoom );
|
|
Camera.add( content.camera );
|
|
}
|
|
|
|
@Override
|
|
public void destroy() {
|
|
super.destroy();
|
|
Camera.remove( content.camera );
|
|
}
|
|
|
|
public void scrollTo( float x, float y ) {
|
|
content.camera.scroll.set( x, y );
|
|
}
|
|
|
|
@Override
|
|
protected void createChildren() {
|
|
controller = new TouchController();
|
|
add( controller );
|
|
}
|
|
|
|
@Override
|
|
protected void layout() {
|
|
|
|
content.setPos( 0, 0 );
|
|
controller.x = x;
|
|
controller.y = y;
|
|
controller.width = width;
|
|
controller.height = height;
|
|
|
|
Point p = camera().cameraToScreen( x, y );
|
|
Camera cs = content.camera;
|
|
cs.x = p.x;
|
|
cs.y = p.y;
|
|
cs.resize( (int)width, (int)height );
|
|
}
|
|
|
|
public Component content() {
|
|
return content;
|
|
}
|
|
|
|
public void onClick( float x, float y ) {
|
|
}
|
|
|
|
public class TouchController extends TouchArea {
|
|
|
|
private float dragThreshold;
|
|
|
|
public TouchController() {
|
|
super( 0, 0, 0, 0 );
|
|
dragThreshold = PixelScene.defaultZoom * 8;
|
|
}
|
|
|
|
@Override
|
|
protected void onClick( Touch touch ) {
|
|
if (dragging) {
|
|
|
|
dragging = false;
|
|
|
|
} else {
|
|
|
|
PointF p = content.camera.screenToCamera( (int)touch.current.x, (int)touch.current.y );
|
|
ScrollPane.this.onClick( p.x, p.y );
|
|
|
|
}
|
|
}
|
|
|
|
// true if dragging is in progress
|
|
private boolean dragging = false;
|
|
// last touch coords
|
|
private PointF lastPos = new PointF();
|
|
|
|
@Override
|
|
protected void onDrag( Touch t ) {
|
|
if (dragging) {
|
|
|
|
Camera c = content.camera;
|
|
|
|
c.scroll.offset( PointF.diff( lastPos, t.current ).invScale( c.zoom ) );
|
|
if (c.scroll.x + width > content.width()) {
|
|
c.scroll.x = content.width() - width;
|
|
}
|
|
if (c.scroll.x < 0) {
|
|
c.scroll.x = 0;
|
|
}
|
|
if (c.scroll.y + height > content.height()) {
|
|
c.scroll.y = content.height() - height;
|
|
}
|
|
if (c.scroll.y < 0) {
|
|
c.scroll.y = 0;
|
|
}
|
|
|
|
|
|
lastPos.set( t.current );
|
|
|
|
} else if (PointF.distance( t.current, t.start ) > dragThreshold) {
|
|
|
|
dragging = true;
|
|
lastPos.set( t.current );
|
|
|
|
}
|
|
}
|
|
}
|
|
}
|