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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd">
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<title>Castle Game Engine: CastleProgress: Class TProgressUserInterface</title>
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<h2>Castle Game Engine</h2><p><a href="introduction.html" class="navigation">Introduction</a></p><p><a href="AllUnits.html" class="navigation">Units</a></p><p><a href="ClassHierarchy.html" class="navigation">Class Hierarchy</a></p><p><a href="AllClasses.html" class="navigation">Classes, Interfaces, Objects and Records</a></p><p><a href="AllTypes.html" class="navigation">Types</a></p><p><a href="AllVariables.html" class="navigation">Variables</a></p><p><a href="AllConstants.html" class="navigation">Constants</a></p><p><a href="AllFunctions.html" class="navigation">Functions and Procedures</a></p><p><a href="AllIdentifiers.html" class="navigation">Identifiers</a></p></td><td class="content">
<a name="TProgressUserInterface"></a><h1 class="cio">Class TProgressUserInterface</h1>
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<td><a class="section" href="#PasDoc-Description">Description</a></td><td><a class="section" href="#PasDoc-Hierarchy">Hierarchy</a></td><td><a class="section" href="#PasDoc-Fields">Fields</a></td><td><a class="section" href="#PasDoc-Methods">Methods</a></td><td><a class="section" href="#PasDoc-Properties">Properties</a></td></tr></table>
<a name="PasDoc-Description"></a><h2 class="unit">Unit</h2>
<p class="unitlink">
<a  href="CastleProgress.html">CastleProgress</a></p>
<h2 class="declaration">Declaration</h2>
<p class="declaration">
<code>type TProgressUserInterface = class(TObject)</code></p>
<h2 class="description">Description</h2>
<p>
Abstract user interface of the progress bar. See <a class="normal" href="CastleProgress.TProgress.html">TProgress</a> for information how to use progress bars.</p>
<a name="PasDoc-Hierarchy"></a><h2 class="hierarchy">Hierarchy</h2>
<ul class="hierarchy"><li class="ancestor">TObject</li>
<li class="thisitem">TProgressUserInterface</li></ul><h2 class="overview">Overview</h2>
<a name="PasDoc-Fields"></a><h3 class="summary">Fields</h3>
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<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>internal const <b><a  href="CastleProgress.TProgressUserInterface.html#DefaultBarYPosition">DefaultBarYPosition</a></b> = 0.5;</code></td>
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<a name="PasDoc-Methods"></a><h3 class="summary">Methods</h3>
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<td class="itemcode"><code>constructor <b><a  href="CastleProgress.TProgressUserInterface.html#Create">Create</a></b>;</code></td>
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<td class="itemcode"><code>destructor <b><a  href="CastleProgress.TProgressUserInterface.html#Destroy">Destroy</a></b>; override;</code></td>
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<td class="itemcode"><code>procedure <b><a  href="CastleProgress.TProgressUserInterface.html#Init">Init</a></b>(Progress: <a  href="CastleProgress.TProgress.html">TProgress</a>); virtual; abstract;</code></td>
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<td class="itemcode"><code>procedure <b><a  href="CastleProgress.TProgressUserInterface.html#Update">Update</a></b>(Progress: <a  href="CastleProgress.TProgress.html">TProgress</a>); virtual; abstract;</code></td>
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<td class="itemcode"><code>procedure <b><a  href="CastleProgress.TProgressUserInterface.html#Fini">Fini</a></b>(Progress: <a  href="CastleProgress.TProgress.html">TProgress</a>); virtual; abstract;</code></td>
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<a name="PasDoc-Properties"></a><h3 class="summary">Properties</h3>
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<td class="itemcode"><code>property <b><a  href="CastleProgress.TProgressUserInterface.html#Image">Image</a></b>: <a  href="CastleImages.TRGBImage.html">TRGBImage</a> read FImage write SetImage;</code></td>
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<td class="itemcode"><code>property <b><a  href="CastleProgress.TProgressUserInterface.html#OwnsImage">OwnsImage</a></b>: boolean read FOwnsImage write FOwnsImage default false;</code></td>
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<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>property <b><a  href="CastleProgress.TProgressUserInterface.html#BarYPosition">BarYPosition</a></b>: Single read FBarYPosition write FBarYPosition
      default <a  href="CastleProgress.TProgressUserInterface.html#DefaultBarYPosition">DefaultBarYPosition</a>;</code></td>
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<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>property <b><a  href="CastleProgress.TProgressUserInterface.html#ImageBarYPosition">ImageBarYPosition</a></b>: Single read FBarYPosition write FBarYPosition
      default <a  href="CastleProgress.TProgressUserInterface.html#DefaultBarYPosition">DefaultBarYPosition</a>; deprecated;</code></td>
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<h2 class="description">Description</h2>
<h3 class="detail">Fields</h3>
<table class="detail wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="DefaultBarYPosition"></a><code>internal const <b>DefaultBarYPosition</b> = 0.5;</code></td>
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&nbsp;</td></tr>
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<h3 class="detail">Methods</h3>
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<td class="itemcode"><a name="Create"></a><code>constructor <b>Create</b>;</code></td>
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&nbsp;</td></tr>
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<td class="itemcode"><a name="Destroy"></a><code>destructor <b>Destroy</b>; override;</code></td>
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&nbsp;</td></tr>
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<td class="itemcode"><a name="Init"></a><code>procedure <b>Init</b>(Progress: <a  href="CastleProgress.TProgress.html">TProgress</a>); virtual; abstract;</code></td>
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<p>
Show progress bar.</p>
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<td class="itemcode"><a name="Update"></a><code>procedure <b>Update</b>(Progress: <a  href="CastleProgress.TProgress.html">TProgress</a>); virtual; abstract;</code></td>
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<p>
Update progress bar (because Progress.Position changed).</p>
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<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="Fini"></a><code>procedure <b>Fini</b>(Progress: <a  href="CastleProgress.TProgress.html">TProgress</a>); virtual; abstract;</code></td>
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<p>
Hide progress bar.</p>
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<h3 class="detail">Properties</h3>
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<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="Image"></a><code>property <b>Image</b>: <a  href="CastleImages.TRGBImage.html">TRGBImage</a> read FImage write SetImage;</code></td>
</tr>
<tr><td colspan="2">
<p>
Image displayed as a background of the progress bar. Not all progress bar interfaces support it, some simply ignore it. You can leave it <code>Nil</code>, then we will simply capture screen contents each time the progress bar starts.

<p>Whether the image assigned here is &quot;owned&quot; (that is, &quot;automatically freed&quot;) by <a class="normal" href="CastleProgress.TProgressUserInterface.html">TProgressUserInterface</a> instance depends on <a class="normal" href="CastleProgress.TProgressUserInterface.html#OwnsImage">OwnsImage</a>. In any case, we don't modify the image (if we need to resize it to fit the screen size, we do it on a temporary copy).</p>
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<td class="itemcode"><a name="OwnsImage"></a><code>property <b>OwnsImage</b>: boolean read FOwnsImage write FOwnsImage default false;</code></td>
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&nbsp;</td></tr>
</table>
<table class="detail wide_list">
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<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="BarYPosition"></a><code>property <b>BarYPosition</b>: Single read FBarYPosition write FBarYPosition
      default <a  href="CastleProgress.TProgressUserInterface.html#DefaultBarYPosition">DefaultBarYPosition</a>;</code></td>
</tr>
<tr><td colspan="2">
<p>
Vertical position of the displayed progress bar. This feature is supposed to indicate a suitable free space on the background <a class="normal" href="CastleProgress.TProgressUserInterface.html#Image">Image</a> where we can nicely fit the progress bar UI.

<p>Not all progress bar interfaces support it, some simply ignore it.

<p>0 means the middle of progress bar is at the bottom of the image, 1 means at the top. 0.5 indicates the middle, and it's the default.</p>
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<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="ImageBarYPosition"></a><code>property <b>ImageBarYPosition</b>: Single read FBarYPosition write FBarYPosition
      default <a  href="CastleProgress.TProgressUserInterface.html#DefaultBarYPosition">DefaultBarYPosition</a>; deprecated;</code></td>
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<tr><td colspan="2">
<p class="hint_directive">Warning: this symbol is deprecated.</p><p>
Deprecated name for <a class="normal" href="CastleProgress.TProgressUserInterface.html#BarYPosition">BarYPosition</a>.</p>
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