LIBGDX game engine's ScrollPane component

1. Operating interface

This is a horizontal scrollpanel that does not show the scrollbar, and moves horizontally by gesture control Scrollpanel

2. Sample Code

Import Com.badlogic.gdx.graphics.color;import Com.badlogic.gdx.scenes.scene2d.actor;import Com.badlogic.gdx.scenes.scene2d.inputevent;import Com.badlogic.gdx.scenes.scene2d.inputlistener;import Com.badlogic.gdx.scenes.scene2d.touchable;import Com.badlogic.gdx.scenes.scene2d.ui.image;import Com.badlogic.gdx.scenes.scene2d.ui.imagebutton;import Com.badlogic.gdx.scenes.scene2d.ui.scrollpane;import Com.badlogic.gdx.scenes.scene2d.ui.skin;import Com.badlogic.gdx.scenes.scene2d.ui.table;import Com.badlogic.gdx.scenes.scene2d.utils.clicklistener;import Com.badlogic.gdx.scenes.scene2d.utils.textureregiondrawable;import com.swallowgames.supermario.game.Assets; Import Com.swallowgames.supermario.screen.mainscreen;import Com.swallowgames.supermario.utils.utils;public class Themescrollpanel extends Scrollpane{private buttonclicklistener clicklistener;private mainscreen mainScreen;public Themescrollpanel (Actor widget, skin skin) {Super (Widget, skin);} Public Themescrollpanel (Actor widget, ScrollPaneStyle style) {super (widget, style);} Public Themescrollpanel init () {Clicklistener = new Buttonclicklistener (); Table table = new table (); Table.debug (); ImageButton themebackground = new ImageButton (New Textureregiondrawable ( ASSETS.INSTANCE.ASSETUI.THEME1), New Textureregiondrawable (Assets.instance.assetUI.theme1p)); Themebackground.setuserobject (0); Themebackground.addcapturelistener (Clicklistener); Table.add (ThemeBackground); Table.columndefaults (0); themebackground = new ImageButton (New Textureregiondrawable (Assets.instance.assetUI.theme2 ), New Textureregiondrawable (Assets.instance.assetUI.theme2p)); Themebackground.setuserobject (1); Themebackground.settouchable (touchable.disabled); Themebackground.addcapturelistener (ClickListener); Image lock = New Image (New Textureregiondrawable (Assets.instance.assetUI.lock)); Lock.setposition ((Themebackground.getwidth ()- Lock.getwidth ())/2, (Themebackground.getheight ()-lock.getheight ())/2); Themebackground.addactor (lock); Table.add ( Themebackground). Width (themebAckground.getwidth ()). Height (themebackground.getheight ()); Table.columndefaults (1); themebackground = new ImageButton (New Textureregiondrawable (Assets.instance.assetUI.theme3), New Textureregiondrawable ( Assets.instance.assetUI.theme3p)); Themebackground.setuserobject (2); Themebackground.settouchable ( touchable.disabled); Themebackground.addcapturelistener (clicklistener); lock = new Image (New Textureregiondrawable ( Assets.instance.assetUI.lock)); Lock.setposition ((Themebackground.getwidth ()-lock.getwidth ())/2, ( Themebackground.getheight ()-lock.getheight ())/2); Themebackground.addactor (lock); Table.add (Themebackground). Width (themebackground.getwidth ()). Height (themebackground.getheight ()); Table.columndefaults (2); themebackground = new ImageButton (New Textureregiondrawable (Assets.instance.assetUI.theme4 ), New Textureregiondrawable (Assets.instance.assetUI.theme4p)); Themebackground.setuserobject (3); Themebackground.setcolor (Color.gray); themebackground.settouchable (touchable.disabled); themeBackground.aDdcapturelistener (clicklistener); lock = new Image (new Textureregiondrawable (Assets.instance.assetUI.lock)); Lock.setposition ((Themebackground.getwidth ()-lock.getwidth ())/2, (Themebackground.getheight ()-lock.getHeight ()) /2); Themebackground.addactor (lock); Lock.setcolor (Color.gray); Table.add (themebackground). Width ( Themebackground.getwidth ()). Height (themebackground.getheight ()); Table.columndefaults (3); Table.pack (); setwidget (table); setscrollingdisabled (false, True); AddListener (new Inputlistener () {public boolean TouchDown (InputEvent event, float x, float y, int pointer, int button) {event.stop (); retur n True;}}); Setsmoothscrolling (True); Setflickscroll (false); SetSize (Themebackground.getwidth () * *, table.getheight ()); SetPosition (Utils.xaxiscenter (GetWidth ()), Utils.yaxiscenter (GetHeight ()), return this; public void Setmainscreen (Mainscreen mainscreen) {this.mainscreen = Mainscreen;} Class Buttonclicklistener extends Clicklistener {@Overridepublic void TouchUp (InputEvent event, float x,float y, int pointer, int button) {Super.touchup (event, x, y, pointer, button); Actor actor = Event.getlisteneractor (); Integer themeindex = (integer) actor.getuserobject (); Mainscreen.addlevelwindow (Themeindex);}}}

3. Gesture Monitoring

Import Com.badlogic.gdx.input.gesturedetector.gestureadapter;public class Mainscreengesturelistener extends Gestureadapter{private Levelwindow levelwindow;private themescrollpanel themescrollpanel;float panx = 0f;float pany = 0f ; float Pandeltax = 0f;float Pandeltay = 0f; @Overridepublic boolean pan (float x, float y, float deltax, float deltay) {if (l Evelwindow! = null && levelwindow.getcolor (). A! = 0f) {This.panx = X;this.pany = Y;this.pandeltax = Deltax;this.pan DeltaY = Deltay;return true;} else if (themescrollpanel! = null && themescrollpanel.isvisible ()) {THEMESCROLLPANEL.SETSCROLLX ( THEMESCROLLPANEL.GETSCROLLX ()-deltax); return true;} Else{return false;}} public void Setlevelwindow (Levelwindow levelwindow) {This.levelwindow = Levelwindow;} public void Setthemescrollpanel (Themescrollpanel themescrollpanel) {this.themescrollpanel = Themescrollpanel;} @Overridepublic boolean panstop (float x, float y, int pointer, int button) {if (Levelwindow! = null && Levelwindow. IsVisible()) {if (Panx = = x && pany ==y && pandeltax < 0f) {//Swipe left levelwindow.nextpage ();} if (Panx = = x && pany ==y && pandeltax > 0f) {//Swipe right to Levelwindow.prevpage ();} return true;} Else{return false;}}}

4. Code description

The content inside the ScrollPane is a few pictures, using a table component layout.

A few lines of code to note:

Control bit Horizontal Slide

Setscrollingdisabled (False, True);

It needs to be added, and I don't know if it's dry.

AddListener (New Inputlistener () {
public boolean TouchDown (InputEvent event, float x, float y, int pointer, int button) {
Event.stop ();
return true;
}
});

Look at the method name and you know what it is.
Setsmoothscrolling (TRUE);

Do not show your own scroll bar
Setflickscroll (FALSE);

Gesture listener, not clear can go to <a href= "www.baidu.com" > Baidu </a>

@Override
Public boolean pan (float x, float y, Float deltax, float deltay) {
if (Levelwindow! = null && Levelwindow.getcolor (). A! = 0f) {
This.panx = x;
This.pany = y;
this.pandeltax = DeltaX;
This.pandeltay = DeltaY;
return true;
}else if (themescrollpanel! = null && themescrollpanel.isvisible ()) {
themescrollpanel.setscrollx (THEMESCROLLPANEL.GETSCROLLX ()-deltaX);
return true;
}else{
return false;
}
}

This piece of code, where Themescrollpanel.setscrollx (THEMESCROLLPANEL.GETSCROLLX ()-deltax); is to move the scrolling component through gestures,

DeltaX is the speed of movement.

LIBGDX game engine's ScrollPane component