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  510. </style>
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  511. </head>
    512. 

  512. <body class="article toc2 toc-left">
    513. 

  513. <div id="header">
    514. 

  514. <h1>Laying out the GUI in XML</h1>
    515. 

  515. <div id="toc" class="toc2">
    516. 

  516. <div id="toctitle">Table of Contents</div>
    517. 

  517. <ul class="sectlevel1">
    518. 

  518. <li><a href="#plan-your-gui-layout">Plan Your GUI Layout</a></li>
    519. 

  519. <li><a href="#implement-your-gui-layout">Implement Your GUI Layout</a>
    520. 

  520. <ul class="sectlevel2">
    521. 

  521. <li><a href="#make-screens">Make Screens</a></li>
    522. 

  522. <li><a href="#make-layers">Make Layers</a></li>
    523. 

  523. <li><a href="#make-panels">Make Panels</a></li>
    524. 

  524. </ul>
    525. 

  525. </li>
    526. 

  526. <li><a href="#adding-content-to-panels">Adding Content to Panels</a>
    527. 

  527. <ul class="sectlevel2">
    528. 

  528. <li><a href="#add-images">Add Images</a></li>
    529. 

  529. <li><a href="#add-static-text">Add Static Text</a></li>
    530. 

  530. <li><a href="#add-controls">Add Controls</a></li>
    531. 

  531. </ul>
    532. 

  532. </li>
    533. 

  533. <li><a href="#intermediate-result">Intermediate Result</a></li>
    534. 

  534. <li><a href="#next-steps">Next Steps</a></li>
    535. 

  535. </ul>
    536. 

  536. </div>
    537. 

  537. </div>
    538. 

  538. <div id="content">
    539. 

  539. <div id="preamble">
    540. 

  540. <div class="sectionbody">
    541. 

  541. <div class="olist arabic">
    542. 

  542. <ol class="arabic">
    543. 

  543. <li>
    544. 

  544. <p><a href="jme3/advanced/nifty_gui.html">Nifty GUI Concepts</a></p>
    545. 

  545. </li>
    546. 

  546. <li>
    547. 

  547. <p><a href="jme3/advanced/nifty_gui_best_practices.html">Nifty GUI Best Practices</a></p>
    548. 

  548. </li>
    549. 

  549. <li>
    550. 

  550. <p><strong>Nifty <abbr title="Graphical User Interface">GUI</abbr> XML Layout</strong> or <a href="jme3/advanced/nifty_gui_java_layout.html">Nifty GUI Java Layout</a></p>
    551. 

  551. </li>
    552. 

  552. <li>
    553. 

  553. <p><a href="jme3/advanced/nifty_gui_overlay.html">Nifty GUI Overlay</a> or <a href="jme3/advanced/nifty_gui_projection.html">Nifty GUI Projection</a></p>
    554. 

  554. </li>
    555. 

  555. <li>
    556. 

  556. <p><a href="jme3/advanced/nifty_gui_java_interaction.html">Interact with the GUI from Java</a></p>
    557. 

  557. </li>
    558. 

  558. </ol>
    559. 

  559. </div>
    560. 

  560. <div class="paragraph">
    561. 

  561. <p>You can “draw the <abbr title="Graphical User Interface">GUI</abbr> to the screen by writing XML code (alternatively you can also use Java).</p>
    562. 

  562. </div>
    563. 

  563. </div>
    564. 

  564. </div>
    565. 

  565. <div class="sect1">
    566. 

  566. <h2 id="plan-your-gui-layout">Plan Your GUI Layout</h2>
    567. 

  567. <div class="sectionbody">
    568. 

  568. <div class="imageblock" style="text-align: right">
    569. 

  569. <div class="content">
    570. 

  570. <img src="images/jme3/advanced/gui-layout-draft.png" alt="gui-layout-draft.png" height="">
    571. 

  571. </div>
    572. 

  572. </div>
    573. 

  573. <div class="paragraph">
    574. 

  574. <p>In this tutorial, you want to create two game screens: An out-of-game StartScreen that the players see before the game starts; and an in-game <a href="http://en.wikipedia.org/wiki/HUD_%28video_gaming%29">HUD</a> that displays info during the game. Before writing code, you plan the <abbr title="Graphical User Interface">GUI</abbr> layout, either on paper or in a graphic application.</p>
    575. 

  575. </div>
    576. 

  576. <div class="paragraph">
    577. 

  577. <p>The StartScreen contains:</p>
    578. 

  578. </div>
    579. 

  579. <div class="ulist">
    580. 

  580. <ul>
    581. 

  581. <li>
    582. 

  582. <p>The background layer has a centered layout and contains an image.</p>
    583. 

  583. </li>
    584. 

  584. <li>
    585. 

  585. <p>The top layer has a vertical layout, containing 3 panels:</p>
    586. 

  586. <div class="ulist">
    587. 

  587. <ul>
    588. 

  588. <li>
    589. 

  589. <p>The top panel contains a label with the game title,</p>
    590. 

  590. </li>
    591. 

  591. <li>
    592. 

  592. <p>The middle panel contains a text field with the game description.</p>
    593. 

  593. </li>
    594. 

  594. <li>
    595. 

  595. <p>The bottom panel has a horizontal layout and contains two more panels:</p>
    596. 

  596. <div class="ulist">
    597. 

  597. <ul>
    598. 

  598. <li>
    599. 

  599. <p>The left panel contains a Start button.</p>
    600. 

  600. </li>
    601. 

  601. <li>
    602. 

  602. <p>The right panel contains a Quit button.</p>
    603. 

  603. </li>
    604. 

  604. </ul>
    605. 

  605. </div>
    606. 

  606. </li>
    607. 

  607. </ul>
    608. 

  608. </div>
    609. 

  609. </li>
    610. 

  610. </ul>
    611. 

  611. </div>
    612. 

  612. <div class="paragraph">
    613. 

  613. <p>The HUD contains:</p>
    614. 

  614. </div>
    615. 

  615. <div class="ulist">
    616. 

  616. <ul>
    617. 

  617. <li>
    618. 

  618. <p>The background layer has a centered layout, and contains the partially transparent HUD image.</p>
    619. 

  619. </li>
    620. 

  620. <li>
    621. 

  621. <p>The top layer has a horizontal layout, containing 2 panels:</p>
    622. 

  622. <div class="ulist">
    623. 

  623. <ul>
    624. 

  624. <li>
    625. 

  625. <p>The left panel as transparent spacer.</p>
    626. 

  626. </li>
    627. 

  627. <li>
    628. 

  628. <p>The right panel has a vertical layout containing 2 panels, a label and an image.</p>
    629. 

  629. </li>
    630. 

  630. </ul>
    631. 

  631. </div>
    632. 

  632. </li>
    633. 

  633. </ul>
    634. 

  634. </div>
    635. 

  635. </div>
    636. 

  636. </div>
    637. 

  637. <div class="sect1">
    638. 

  638. <h2 id="implement-your-gui-layout">Implement Your GUI Layout</h2>
    639. 

  639. <div class="sectionbody">
    640. 

  640. <div class="imageblock" style="text-align: right">
    641. 

  641. <div class="content">
    642. 

  642. <img src="images/jme3/advanced/nifty-screen-layer-panel.png" alt="nifty-screen-layer-panel.png" height="136">
    643. 

  643. </div>
    644. 

  644. </div>
    645. 

  645. <div class="paragraph">
    646. 

  646. <p>Create an empty <strong>screen</strong>.xml file in the <code>assets/Interface/</code> directory of your project. ( Rightclick on Interface → New → Other… → <abbr title="Graphical User Interface">GUI</abbr> → Empty NiftyGui file)
    647. 

  647. Afterwards create the directory <code>assets/Interface/Fonts</code> and add a new font e.g. Arial. ( <strong>Rightclick on Interface → New → Other… →</strong> Other → Folder and <abbr title="Graphical User Interface">GUI</abbr> → Font)</p>
    648. 

  648. </div>
    649. 

  649. <div class="paragraph">
    650. 

  650. <p>One XML file can contain several, or even all screens. As a reminder: Nifty displays one screen at a time; a screen contains several layers on top of one another; each layer contains panels that are embedded into another; the panels contain the actual content (text, images, or controls).</p>
    651. 

  651. </div>
    652. 

  652. <div class="sect2">
    653. 

  653. <h3 id="make-screens">Make Screens</h3>
    654. 

  654. <div class="paragraph">
    655. 

  655. <p>The following minimal XML file contains a start screen and a HUD screen. (Neither has been defined yet.)</p>
    656. 

  656. </div>
    657. 

  657. <div class="listingblock">
    658. 

  658. <div class="content">
    659. 

  659. <pre class="CodeRay highlight"><code data-lang="xml"><span class="preprocessor">&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt;</span>
    660. 

  660. <span class="tag">&lt;nifty</span> <span class="attribute-name">xmlns</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">http://nifty-gui.sourceforge.net/nifty-1.3.xsd</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">xmlns:xsi</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">http://www.w3.org/2001/XMLSchema-instance</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">xsi:schemaLocation</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">http://nifty-gui.sourceforge.net/nifty-1.3.xsd http://nifty-gui.sourceforge.net/nifty-1.3.xsd</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    661. 

  661.   <span class="tag">&lt;screen</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">start</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    662. 

  662.     <span class="comment">&lt;!-- ... --&gt;</span>
    663. 

  663.   <span class="tag">&lt;/screen&gt;</span>
    664. 

  664.   <span class="tag">&lt;screen</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">hud</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    665. 

  665.     <span class="comment">&lt;!-- ... --&gt;</span>
    666. 

  666.   <span class="tag">&lt;/screen&gt;</span>
    667. 

  667. <span class="tag">&lt;/nifty&gt;</span></code></pre>
    668. 

  668. </div>
    669. 

  669. </div>
    670. 

  670. <div class="paragraph">
    671. 

  671. <p>Every Nifty <abbr title="Graphical User Interface">GUI</abbr> must have a start screen. The others (in this example, the HUD screen) are optional.</p>
    672. 

  672. </div>
    673. 

  673. <div class="paragraph">
    674. 

  674. <p><strong>Note:</strong> In the following examples, the XML schema header is abbreviated to just <code>&lt;nifty&gt;</code>.</p>
    675. 

  675. </div>
    676. 

  676. </div>
    677. 

  677. <div class="sect2">
    678. 

  678. <h3 id="make-layers">Make Layers</h3>
    679. 

  679. <div class="paragraph">
    680. 

  680. <p>The following minimal XML file shows how we added layers to the start screen and HUD screen.
    681. 

  681. Delete all from the file and add following code:</p>
    682. 

  682. </div>
    683. 

  683. <div class="listingblock">
    684. 

  684. <div class="content">
    685. 

  685. <pre class="CodeRay highlight"><code data-lang="xml"><span class="tag">&lt;nifty&gt;</span>
    686. 

  686.   <span class="tag">&lt;screen</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">start</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    687. 

  687.     <span class="tag">&lt;layer</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">background</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">backgroundColor</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">#000f</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    688. 

  688.       <span class="comment">&lt;!-- ... --&gt;</span>
    689. 

  689.     <span class="tag">&lt;/layer&gt;</span>
    690. 

  690.     <span class="tag">&lt;layer</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">foreground</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">backgroundColor</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">#0000</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">childLayout</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">vertical</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    691. 

  691.       <span class="comment">&lt;!-- ... --&gt;</span>
    692. 

  692.     <span class="tag">&lt;/layer&gt;</span>
    693. 

  693.   <span class="tag">&lt;/screen&gt;</span>
    694. 

  694.   <span class="tag">&lt;screen</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">hud</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    695. 

  695.     <span class="tag">&lt;layer</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">background</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">backgroundColor</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">#000f</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    696. 

  696.       <span class="comment">&lt;!-- ... --&gt;</span>
    697. 

  697.     <span class="tag">&lt;/layer&gt;</span>
    698. 

  698.     <span class="tag">&lt;layer</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">foreground</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">backgroundColor</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">#0000</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">childLayout</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">horizontal</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    699. 

  699.       <span class="comment">&lt;!-- ... --&gt;</span>
    700. 

  700.     <span class="tag">&lt;/layer&gt;</span>
    701. 

  701.   <span class="tag">&lt;/screen&gt;</span>
    702. 

  702. <span class="tag">&lt;/nifty&gt;</span></code></pre>
    703. 

  703. </div>
    704. 

  704. </div>
    705. 

  705. <div class="paragraph">
    706. 

  706. <p>In a layer, you can now add panels and arrange them. Panels are containers that mark the areas where you want to display text, images, or controls (buttons etc) later.</p>
    707. 

  707. </div>
    708. 

  708. </div>
    709. 

  709. <div class="sect2">
    710. 

  710. <h3 id="make-panels">Make Panels</h3>
    711. 

  711. <div class="paragraph">
    712. 

  712. <p>A panel is the inner-most container (that will contain the actual content: text, images, or controls). You place panels inside layers. The following panels go into in the <code>start</code> screen&#8217;s <code>foreground</code> layer:</p>
    713. 

  713. </div>
    714. 

  714. <div class="listingblock">
    715. 

  715. <div class="content">
    716. 

  716. <pre class="CodeRay highlight"><code data-lang="xml">      <span class="tag">&lt;panel</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">panel_top</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">height</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">25%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">width</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">75%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">align</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">childLayout</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span>
    717. 

  717.              <span class="attribute-name">backgroundColor</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">#f008</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    718. 

  718.       <span class="tag">&lt;/panel&gt;</span>
    719. 

  719.       <span class="tag">&lt;panel</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">panel_mid</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">height</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">50%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">width</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">75%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">align</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">childLayout</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span>
    720. 

  720.              <span class="attribute-name">backgroundColor</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">#0f08</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    721. 

  721.       <span class="tag">&lt;/panel&gt;</span>
    722. 

  722.       <span class="tag">&lt;panel</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">panel_bottom</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">height</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">25%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">width</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">75%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">align</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">childLayout</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">horizontal</span><span class="delimiter">&quot;</span></span>
    723. 

  723.              <span class="attribute-name">backgroundColor</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">#00f8</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    724. 

  724.         <span class="tag">&lt;panel</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">panel_bottom_left</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">height</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">50%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">width</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">50%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">valign</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">childLayout</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span>
    725. 

  725.              <span class="attribute-name">backgroundColor</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">#44f8</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    726. 

  726.         <span class="tag">&lt;/panel&gt;</span>
    727. 

  727.         <span class="tag">&lt;panel</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">panel_bottom_right</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">height</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">50%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">width</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">50%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">valign</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">childLayout</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span>
    728. 

  728.              <span class="attribute-name">backgroundColor</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">#88f8</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    729. 

  729.         <span class="tag">&lt;/panel&gt;</span>
    730. 

  730.       <span class="tag">&lt;/panel&gt;</span></code></pre>
    731. 

  731. </div>
    732. 

  732. </div>
    733. 

  733. <div class="paragraph">
    734. 

  734. <p>The following panels go into in the <code>hud</code> screen&#8217;s <code>foreground</code> layer:</p>
    735. 

  735. </div>
    736. 

  736. <div class="listingblock">
    737. 

  737. <div class="content">
    738. 

  738. <pre class="CodeRay highlight"><code data-lang="xml">      <span class="tag">&lt;panel</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">panel_left</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">width</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">80%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">height</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">100%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">childLayout</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">vertical</span><span class="delimiter">&quot;</span></span>
    739. 

  739.       <span class="attribute-name">backgroundColor</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">#0f08</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    740. 

  740.         <span class="comment">&lt;!-- spacer --&gt;</span>
    741. 

  741.       <span class="tag">&lt;/panel&gt;</span>
    742. 

  742.       <span class="tag">&lt;panel</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">panel_right</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">width</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">20%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">height</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">100%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">childLayout</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">vertical</span><span class="delimiter">&quot;</span></span>
    743. 

  743.       <span class="attribute-name">backgroundColor</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">#00f8</span><span class="delimiter">&quot;</span></span> <span class="tag">&gt;</span>
    744. 

  744.         <span class="tag">&lt;panel</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">panel_top_right1</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">width</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">100%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">height</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">15%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">childLayout</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span>
    745. 

  745.              <span class="attribute-name">backgroundColor</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">#00f8</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    746. 

  746.         <span class="tag">&lt;/panel&gt;</span>
    747. 

  747.         <span class="tag">&lt;panel</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">panel_top_right2</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">width</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">100%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">height</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">15%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">childLayout</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span>
    748. 

  748.              <span class="attribute-name">backgroundColor</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">#44f8</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    749. 

  749.         <span class="tag">&lt;/panel&gt;</span>
    750. 

  750.         <span class="tag">&lt;panel</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">panel_bot_right</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">width</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">100%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">height</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">70%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">valign</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span>
    751. 

  751.              <span class="attribute-name">backgroundColor</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">#88f8</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    752. 

  752.         <span class="tag">&lt;/panel&gt;</span>
    753. 

  753.       <span class="tag">&lt;/panel&gt;</span></code></pre>
    754. 

  754. </div>
    755. 

  755. </div>
    756. 

  756. <div class="paragraph">
    757. 

  757. <p>The result should look as follows:</p>
    758. 

  758. </div>
    759. 

  759. <div class="imageblock" style="text-align: center">
    760. 

  760. <div class="content">
    761. 

  761. <img src="images/jme3/advanced/nifty-gui-panels.png" alt="nifty-gui-panels.png" height="">
    762. 

  762. </div>
    763. 

  763. </div>
    764. 

  764. </div>
    765. 

  765. </div>
    766. 

  766. </div>
    767. 

  767. <div class="sect1">
    768. 

  768. <h2 id="adding-content-to-panels">Adding Content to Panels</h2>
    769. 

  769. <div class="sectionbody">
    770. 

  770. <div class="paragraph">
    771. 

  771. <p>See also <a href="http://sourceforge.net/apps/mediawiki/nifty-gui/index.php?title=Layout_Introduction">Layout Introduction</a> on the Nifty <abbr title="Graphical User Interface">GUI</abbr> site.</p>
    772. 

  772. </div>
    773. 

  773. <div class="sect2">
    774. 

  774. <h3 id="add-images">Add Images</h3>
    775. 

  775. <div class="paragraph">
    776. 

  776. <p>The <a href="http://hub.jmonkeyengine.org/wiki/lib/exe/fetch.php/jme3:advanced:start-background.png">start-background.png</a> image is a fullscreen background picture. Add it to <code>Interface</code>. In the <code>start</code> screen, add the following image element:</p>
    777. 

  777. </div>
    778. 

  778. <div class="listingblock">
    779. 

  779. <div class="content">
    780. 

  780. <pre class="CodeRay highlight"><code data-lang="xml">    <span class="tag">&lt;layer</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">background</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">childLayout</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    781. 

  781.         <span class="tag">&lt;image</span> <span class="attribute-name">filename</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">Interface/start-background.png</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span><span class="tag">&lt;/image&gt;</span>
    782. 

  782.     <span class="tag">&lt;/layer&gt;</span></code></pre>
    783. 

  783. </div>
    784. 

  784. </div>
    785. 

  785. <div class="paragraph">
    786. 

  786. <p>The <a href="http://hub.jmonkeyengine.org/wiki/lib/exe/fetch.php/jme3:advanced:hud-frame.png">hud-frame.png</a> image is a transparent frame that we use as HUD decoration. Add it to <code>Interface</code>. In the <code>hud</code> screen, add the following image element:</p>
    787. 

  787. </div>
    788. 

  788. <div class="listingblock">
    789. 

  789. <div class="content">
    790. 

  790. <pre class="CodeRay highlight"><code data-lang="xml">    <span class="tag">&lt;layer</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">background</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">childLayout</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    791. 

  791.         <span class="tag">&lt;image</span> <span class="attribute-name">filename</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">Interface/hud-frame.png</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span><span class="tag">&lt;/image&gt;</span>
    792. 

  792.     <span class="tag">&lt;/layer&gt;</span></code></pre>
    793. 

  793. </div>
    794. 

  794. </div>
    795. 

  795. <div class="paragraph">
    796. 

  796. <p>In order to make the hud-frame.png independent of the screen resolution you are using, you could use the <code>imageMode</code> attribute on the image element <a href="http://sourceforge.net/apps/mediawiki/nifty-gui/index.php?title=Resizable_Images_(ImageMode%3Dresize)_explained"> Resizable Images (ImageMode=resize) explained</a></p>
    797. 

  797. </div>
    798. 

  798. <div class="listingblock">
    799. 

  799. <div class="content">
    800. 

  800. <pre class="CodeRay highlight"><code data-lang="xml">    <span class="tag">&lt;layer</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">background</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">childLayout</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    801. 

  801.         <span class="tag">&lt;image</span> <span class="attribute-name">filename</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">Interface/hud-frame.png</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">imageMode</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">resize:40,490,110,170,40,560,40,270,40,560,40,40</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">width</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">100%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">height</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">100%</span><span class="delimiter">&quot;</span></span><span class="tag">/&gt;</span>
    802. 

  802.     <span class="tag">&lt;/layer&gt;</span></code></pre>
    803. 

  803. </div>
    804. 

  804. </div>
    805. 

  805. <div class="paragraph">
    806. 

  806. <p>The <a href="http://hub.jmonkeyengine.org/wiki/lib/exe/fetch.php/jme3:advanced:face1.png">face1.png</a> image is an image that you want to use as a status icon. Add it to <code>Interface</code>.
    807. 

  807. In the <code>hud</code> screen&#8217;s <code>foreground</code> layer, add the following image element:</p>
    808. 

  808. </div>
    809. 

  809. <div class="listingblock">
    810. 

  810. <div class="content">
    811. 

  811. <pre class="CodeRay highlight"><code data-lang="xml">        <span class="tag">&lt;panel</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">panel_top_right2</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">width</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">100%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">height</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">15%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">childLayout</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    812. 

  812.             <span class="tag">&lt;image</span> <span class="attribute-name">filename</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">Interface/face1.png</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">valign</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">align</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">height</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">50%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">width</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">30%</span><span class="delimiter">&quot;</span></span> <span class="tag">&gt;</span>
    813. 

  813.             <span class="tag">&lt;/image&gt;</span>
    814. 

  814.         <span class="tag">&lt;/panel&gt;</span></code></pre>
    815. 

  815. </div>
    816. 

  816. </div>
    817. 

  817. <div class="paragraph">
    818. 

  818. <p>This image is scaled to use 50% of the height and 30% of the width of its container.</p>
    819. 

  819. </div>
    820. 

  820. </div>
    821. 

  821. <div class="sect2">
    822. 

  822. <h3 id="add-static-text">Add Static Text</h3>
    823. 

  823. <div class="paragraph">
    824. 

  824. <p>The game title is a typical example of static text. In the <code>start</code> screen, add the following text element:</p>
    825. 

  825. </div>
    826. 

  826. <div class="listingblock">
    827. 

  827. <div class="content">
    828. 

  828. <pre class="CodeRay highlight"><code data-lang="xml">      <span class="tag">&lt;panel</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">panel_top</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">height</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">25%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">width</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">75%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">align</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">childLayout</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    829. 

  829.           <span class="tag">&lt;text</span> <span class="attribute-name">text</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">My Cool Game</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">font</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">Interface/Fonts/Default.fnt</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">width</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">100%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">height</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">100%</span><span class="delimiter">&quot;</span></span> <span class="tag">/&gt;</span>
    830. 

  830.       <span class="tag">&lt;/panel&gt;</span></code></pre>
    831. 

  831. </div>
    832. 

  832. </div>
    833. 

  833. <div class="paragraph">
    834. 

  834. <p>For longer pieces of static text, such as an introduction, you can use wrap=“true. Add the following text element to the <code>Start screen</code>:</p>
    835. 

  835. </div>
    836. 

  836. <div class="listingblock">
    837. 

  837. <div class="content">
    838. 

  838. <pre class="CodeRay highlight"><code data-lang="xml">      <span class="tag">&lt;panel</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">panel_mid</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">height</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">50%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">width</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">75%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">align</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">childLayout</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    839. 

  839.         <span class="tag">&lt;text</span> <span class="attribute-name">text</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">Here goes some text describing the game and the rules and stuff. Incidentally,</span>
    840. 

  840.          <span class="content">the text is quite long and needs to wrap at the end of lines. ...</span><span class="delimiter">&quot;</span></span>
    841. 

  841.         <span class="attribute-name">font</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">Interface/Fonts/Default.fnt</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">width</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">100%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">height</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">100%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">wrap</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">true</span><span class="delimiter">&quot;</span></span> <span class="tag">/&gt;</span>
    842. 

  842.       <span class="tag">&lt;/panel&gt;</span></code></pre>
    843. 

  843. </div>
    844. 

  844. </div>
    845. 

  845. <div class="paragraph">
    846. 

  846. <p>The font used is jME3&#8217;s default font “Interface/Fonts/Default.fnt which is included in the jMonkeyEngine.JAR. You can add your own fonts to your own <code>assets/Interface/Fonts</code> directory.
    847. 

  847. Adjust the path to your font-name.</p>
    848. 

  848. </div>
    849. 

  849. </div>
    850. 

  850. <div class="sect2">
    851. 

  851. <h3 id="add-controls">Add Controls</h3>
    852. 

  852. <div class="paragraph">
    853. 

  853. <p>Before you can use any control, you must load a Control Definition first. Add the following two lines <em>before</em> your screen definitions:</p>
    854. 

  854. </div>
    855. 

  855. <div class="listingblock">
    856. 

  856. <div class="content">
    857. 

  857. <pre class="CodeRay highlight"><code data-lang="xml">  <span class="tag">&lt;useStyles</span> <span class="attribute-name">filename</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">nifty-default-styles.xml</span><span class="delimiter">&quot;</span></span> <span class="tag">/&gt;</span>
    858. 

  858.   <span class="tag">&lt;useControls</span> <span class="attribute-name">filename</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">nifty-default-controls.xml</span><span class="delimiter">&quot;</span></span> <span class="tag">/&gt;</span></code></pre>
    859. 

  859. </div>
    860. 

  860. </div>
    861. 

  861. <div class="paragraph">
    862. 

  862. <p>Note that the useStyles tag must be the first child of the nifty tag, otherwise you will see an error in design view.</p>
    863. 

  863. </div>
    864. 

  864. <div class="sect3">
    865. 

  865. <h4 id="label-control">Label Control</h4>
    866. 

  866. <div class="paragraph">
    867. 

  867. <p>Use label controls for text that you want to edit dynamically from Java. One example for this is the score display.
    868. 

  868. In the <code>hud</code> screen&#8217;s <code>foreground</code> layer, add the following text element:</p>
    869. 

  869. </div>
    870. 

  870. <div class="listingblock">
    871. 

  871. <div class="content">
    872. 

  872. <pre class="CodeRay highlight"><code data-lang="xml">        <span class="tag">&lt;panel</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">panel_top_right</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">height</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">100%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">width</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">15%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">childLayout</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    873. 

  873.             <span class="tag">&lt;control</span> <span class="attribute-name">name</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">label</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">color</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">#000</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">text</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">123</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">width</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">100%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">height</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">100%</span><span class="delimiter">&quot;</span></span> <span class="tag">/&gt;</span>
    874. 

  874.         <span class="tag">&lt;/panel&gt;</span></code></pre>
    875. 

  875. </div>
    876. 

  876. </div>
    877. 

  877. <div class="paragraph">
    878. 

  878. <p>Note that the width and height do not scale the bitmap font, but indirectly make certain it is centered. If you want a different size for the font, you need to provide an extra bitmap font (they come with fixed sizes and don&#8217;t scale well).</p>
    879. 

  879. </div>
    880. 

  880. </div>
    881. 

  881. <div class="sect3">
    882. 

  882. <h4 id="button-control">Button Control</h4>
    883. 

  883. <div class="paragraph">
    884. 

  884. <p>Our <abbr title="Graphical User Interface">GUI</abbr> plan asks for two buttons on the start screen. You add the Start and Quit buttons to the bottom panel of the <code>start</code> screen using the <code>&lt;control&gt;</code> element:</p>
    885. 

  885. </div>
    886. 

  886. <div class="listingblock">
    887. 

  887. <div class="content">
    888. 

  888. <pre class="CodeRay highlight"><code data-lang="xml">        <span class="tag">&lt;panel</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">panel_bottom_left</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">height</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">50%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">width</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">50%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">valign</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">childLayout</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    889. 

  889.           <span class="tag">&lt;control</span> <span class="attribute-name">name</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">button</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">label</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">Start</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">StartButton</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">align</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">valign</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    890. 

  890.           <span class="tag">&lt;/control&gt;</span>
    891. 

  891.         <span class="tag">&lt;/panel&gt;</span>
    892. 

  892.         <span class="tag">&lt;panel</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">panel_bottom_right</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">height</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">50%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">width</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">50%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">valign</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">childLayout</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    893. 

  893.           <span class="tag">&lt;control</span> <span class="attribute-name">name</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">button</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">label</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">Quit</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">QuitButton</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">align</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">valign</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    894. 

  894.           <span class="tag">&lt;/control&gt;</span>
    895. 

  895.         <span class="tag">&lt;/panel&gt;</span></code></pre>
    896. 

  896. </div>
    897. 

  897. </div>
    898. 

  898. <div class="paragraph">
    899. 

  899. <p>Note that these controls don&#8217;t do anything yet – we&#8217;ll get to that soon.</p>
    900. 

  900. </div>
    901. 

  901. <div class="paragraph">
    902. 

  902. <p>Now remove all <strong>backgroundColor=““</strong> tags from your code. They were only needed to show the layout.</p>
    903. 

  903. </div>
    904. 

  904. <div class="paragraph">
    905. 

  905. <p>Your screen.xml should look like this:</p>
    906. 

  906. </div>
    907. 

  907. <div class="listingblock">
    908. 

  908. <div class="content">
    909. 

  909. <pre class="CodeRay highlight"><code data-lang="xml"><span class="preprocessor">&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt;</span>
    910. 

  910. <span class="tag">&lt;nifty</span> <span class="attribute-name">xmlns</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">http://nifty-gui.sourceforge.net/nifty-1.3.xsd</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">xmlns:xsi</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">http://www.w3.org/2001/XMLSchema-instance</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">xsi:schemaLocation</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">http://nifty-gui.sourceforge.net/nifty-1.3.xsd http://nifty-gui.sourceforge.net/nifty-1.3.xsd</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    911. 

  911.   <span class="tag">&lt;useStyles</span> <span class="attribute-name">filename</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">nifty-default-styles.xml</span><span class="delimiter">&quot;</span></span> <span class="tag">/&gt;</span>
    912. 

  912.   <span class="tag">&lt;useControls</span> <span class="attribute-name">filename</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">nifty-default-controls.xml</span><span class="delimiter">&quot;</span></span> <span class="tag">/&gt;</span>
    913. 

  913.   <span class="tag">&lt;screen</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">start</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    914. 

  914.     <span class="tag">&lt;layer</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">background</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">childLayout</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    915. 

  915.       <span class="tag">&lt;image</span> <span class="attribute-name">filename</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">Interface/start-background.png</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span><span class="tag">&lt;/image&gt;</span>
    916. 

  916.     <span class="tag">&lt;/layer&gt;</span>
    917. 

  917.     <span class="tag">&lt;layer</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">foreground</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">childLayout</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">vertical</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    918. 

  918.       <span class="tag">&lt;panel</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">panel_top</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">height</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">25%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">width</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">75%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">align</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">childLayout</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    919. 

  919.         <span class="tag">&lt;text</span> <span class="attribute-name">text</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">My Cool Game</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">font</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">Interface/Fonts/Default.fnt</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">width</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">100%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">height</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">100%</span><span class="delimiter">&quot;</span></span> <span class="tag">/&gt;</span>
    920. 

  920.       <span class="tag">&lt;/panel&gt;</span>
    921. 

  921.       <span class="tag">&lt;panel</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">panel_mid</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">height</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">50%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">width</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">75%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">align</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">childLayout</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    922. 

  922.         <span class="tag">&lt;text</span> <span class="attribute-name">text</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">Here goes some text describing the game and the rules and stuff. Incidentally, the text is quite long and needs to wrap at the end of lines. ...</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">font</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">Interface/Fonts/Default.fnt</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">width</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">100%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">height</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">100%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">wrap</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">true</span><span class="delimiter">&quot;</span></span> <span class="tag">/&gt;</span>
    923. 

  923.       <span class="tag">&lt;/panel&gt;</span>
    924. 

  924.       <span class="tag">&lt;panel</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">panel_bottom</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">height</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">25%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">width</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">75%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">align</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">childLayout</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">horizontal</span><span class="delimiter">&quot;</span></span> <span class="tag">&gt;</span>
    925. 

  925.         <span class="tag">&lt;panel</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">panel_bottom_left</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">height</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">50%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">width</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">50%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">valign</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">childLayout</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    926. 

  926.           <span class="tag">&lt;control</span> <span class="attribute-name">name</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">button</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">label</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">Start</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">StartButton</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">align</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">valign</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span><span class="tag">&lt;/control&gt;</span>
    927. 

  927.         <span class="tag">&lt;/panel&gt;</span>
    928. 

  928.         <span class="tag">&lt;panel</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">panel_bottom_right</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">height</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">50%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">width</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">50%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">valign</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">childLayout</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    929. 

  929.           <span class="tag">&lt;control</span> <span class="attribute-name">name</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">button</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">label</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">Quit</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">QuitButton</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">align</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">valign</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span><span class="tag">&lt;/control&gt;</span>
    930. 

  930.         <span class="tag">&lt;/panel&gt;</span>
    931. 

  931.       <span class="tag">&lt;/panel&gt;</span>
    932. 

  932.     <span class="tag">&lt;/layer&gt;</span>
    933. 

  933.   <span class="tag">&lt;/screen&gt;</span>
    934. 

  934.   <span class="tag">&lt;screen</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">hud</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    935. 

  935.     <span class="tag">&lt;layer</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">background</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">childLayout</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    936. 

  936.       <span class="tag">&lt;image</span> <span class="attribute-name">filename</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">Interface/hud-frame.png</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span><span class="tag">&lt;/image&gt;</span>
    937. 

  937.     <span class="tag">&lt;/layer&gt;</span>
    938. 

  938.     <span class="tag">&lt;layer</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">foreground</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">childLayout</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">horizontal</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    939. 

  939.       <span class="tag">&lt;panel</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">panel_left</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">width</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">80%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">height</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">100%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">childLayout</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">vertical</span><span class="delimiter">&quot;</span></span> <span class="tag">&gt;</span><span class="tag">&lt;/panel&gt;</span>
    940. 

  940.       <span class="tag">&lt;panel</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">panel_right</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">width</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">20%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">height</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">100%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">childLayout</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">vertical</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    941. 

  941.         <span class="tag">&lt;panel</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">panel_top_right1</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">width</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">100%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">height</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">15%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">childLayout</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    942. 

  942.           <span class="tag">&lt;control</span> <span class="attribute-name">name</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">label</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">color</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">#000</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">text</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">123</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">width</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">100%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">height</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">100%</span><span class="delimiter">&quot;</span></span> <span class="tag">/&gt;</span>
    943. 

  943.         <span class="tag">&lt;/panel&gt;</span>
    944. 

  944.         <span class="tag">&lt;panel</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">panel_top_right2</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">width</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">100%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">height</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">15%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">childLayout</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>
    945. 

  945.           <span class="tag">&lt;image</span> <span class="attribute-name">filename</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">Interface/face1.png</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">valign</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">align</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">height</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">50%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">width</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">30%</span><span class="delimiter">&quot;</span></span> <span class="tag">&gt;</span><span class="tag">&lt;/image&gt;</span>
    946. 

  946.         <span class="tag">&lt;/panel&gt;</span>
    947. 

  947.         <span class="tag">&lt;panel</span> <span class="attribute-name">id</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">panel_bot_right</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">width</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">100%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">height</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">70%</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">valign</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">center</span><span class="delimiter">&quot;</span></span> <span class="tag">&gt;</span><span class="tag">&lt;/panel&gt;</span>
    948. 

  948.       <span class="tag">&lt;/panel&gt;</span>
    949. 

  949.     <span class="tag">&lt;/layer&gt;</span>
    950. 

  950.   <span class="tag">&lt;/screen&gt;</span>
    951. 

  951. <span class="tag">&lt;/nifty&gt;</span></code></pre>
    952. 

  952. </div>
    953. 

  953. </div>
    954. 

  954. </div>
    955. 

  955. <div class="sect3">
    956. 

  956. <h4 id="other-controls">Other Controls</h4>
    957. 

  957. <div class="paragraph">
    958. 

  958. <p>Nifty additionally offers many customizable controls such as check boxes, text fields, menus, chats, tabs, … See also <a href="http://sourceforge.net/apps/mediawiki/nifty-gui/index.php?title=Elements">Elements</a> on the Nifty <abbr title="Graphical User Interface">GUI</abbr> site.</p>
    959. 

  959. </div>
    960. 

  960. </div>
    961. 

  961. </div>
    962. 

  962. </div>
    963. 

  963. </div>
    964. 

  964. <div class="sect1">
    965. 

  965. <h2 id="intermediate-result">Intermediate Result</h2>
    966. 

  966. <div class="sectionbody">
    967. 

  967. <div class="paragraph">
    968. 

  968. <p>When you preview this code in the jMonkeyEngine SDK, our tutorial demo should looks as follows: A start screen with two buttons, and a game screen with a simple HUD frame and a blue cube (which stands for any jME3 game content).</p>
    969. 

  969. </div>
    970. 

  970. <div class="imageblock" style="text-align: center">
    971. 

  971. <div class="content">
    972. 

  972. <img src="images/jme3/advanced/nifty-gui-simple-demo.png" alt="nifty-gui-simple-demo.png" height="">
    973. 

  973. </div>
    974. 

  974. </div>
    975. 

  975. <div class="paragraph">
    976. 

  976. <p>Compare this result with the layout draft above.</p>
    977. 

  977. </div>
    978. 

  978. </div>
    979. 

  979. </div>
    980. 

  980. <div class="sect1">
    981. 

  981. <h2 id="next-steps">Next Steps</h2>
    982. 

  982. <div class="sectionbody">
    983. 

  983. <div class="paragraph">
    984. 

  984. <p>Integrate the <abbr title="Graphical User Interface">GUI</abbr> into the game. Typically, you will overlay the <abbr title="Graphical User Interface">GUI</abbr>.</p>
    985. 

  985. </div>
    986. 

  986. <div class="ulist">
    987. 

  987. <ul>
    988. 

  988. <li>
    989. 

  989. <p><a href="jme3/advanced/nifty_gui_overlay.html">Nifty GUI Overlay</a> (recommended)</p>
    990. 

  990. </li>
    991. 

  991. <li>
    992. 

  992. <p><a href="jme3/advanced/nifty_gui_projection.html">Nifty GUI Projection</a> (optional)
    993. 

  993. &lt;tags&gt;&lt;tag target="gui" /&gt;&lt;tag target="documentation" /&gt;&lt;tag target="nifty" /&gt;&lt;tag target="hud" /&gt;&lt;/tags&gt;</p>
    994. 

  994. </li>
    995. 

  995. </ul>
    996. 

  996. </div>
    997. 

  997. </div>
    998. 

  998. </div>
    999. 

  999. </div>
    1000. 

  1000. <div id="footer">
    1001. 

  1001. <div id="footer-text">
    1002. 

  1002. Last updated 2016-05-21 23:44:18 UTC
    1003. 

  1003. </div>
    1004. 

  1004. </div>
    1005. 

  1005. </body>
    1006. 

  1006. </html>
    1007.