beginner.pkg

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<refentry id="{@id}">
 <refnamediv>
  <refname>Beginner Guide</refname>
  <refpurpose>learn how to use HTML_Progress, basic features</refpurpose>
 </refnamediv>
 <refsynopsisdiv>
  <refsynopsisdivinfo>
   <author>
    by Laurent Laville
    <authorblurb>{@link mailto:[e-mail]}</authorblurb>
   </author>
   <copyright>November 2003, Laurent Laville</copyright>
   <releaseinfo>HTML_Progress 1.0+</releaseinfo>
  </refsynopsisdivinfo>
 </refsynopsisdiv>
 {@toc}
 <refsect1 id="{@id basics}">
  <title>HTML_Progress Basics</title>
  <refsect2 id="{@id starting}">
   <title>Starting out from scratch</title>
   <para>
    {@tutorial gettingstarted.pkg#inahurry} you've seen that such code below is not enough 
    to run properly a Progress Bar.
   </para>
   <para>
    <programlisting role="php">
    <![CDATA[
<?php
require_once ('HTML/Progress.php');

$bar = new HTML_Progress();

echo $bar->toHtml(); 
?>
    ]]>
    </programlisting>
   </para>
   <para>You got only : 
    <graphic fileref="../media/screenshots/inahurry.png"></graphic></para>
   <para>
    Why ? what's wrong with previous code ? It's very simple, HTML_Progress needs some CSS
    class-selector to work fine. So if you send to browser the necessary styles, all will be ok.
   </para>
   <para>
    <programlisting role="php">
    <![CDATA[
<?php
require_once ('HTML/Progress.php');

$bar = new HTML_Progress();
?>
<style type="text/css">
<!--
<?php echo $bar->getStyle(); ?>
// -->
</style>

<?php
echo $bar->toHtml(); 
?>
    ]]>
    </programlisting>
   </para>
   <para>And the result will be : 
    <graphic fileref="../media/screenshots/scratch1.png"></graphic></para>
  </refsect2>
  <refsect2 id="{@id using}">
   <title>Running HTML_Progress</title>
   <para>
    Now you know how to show a basic progress bar, what should we do to run it ?
   </para>
   <para>
    Let's begin by a simple empty loop. Your code should be something like that :
   </para>
   <para>
    <programlisting role="php">
    <![CDATA[
<?php
require_once ('HTML/Progress.php');

$bar = new HTML_Progress();
?>
<style type="text/css">
<!--
<?php echo $bar->getStyle(); ?>
// -->
</style>

<?php
echo $bar->toHtml(); 

do {
    $bar->display();
    if ($bar->getPercentComplete() == 1) {
        break;   // the progress bar has reached 100%
    }
    $bar->incValue();
} while(1);
?>
    ]]>
    </programlisting>
   </para>
   <para>
    What's wrong out there ? The progress bar is running but nothing change on browser screen.
    As for previous error, HTML_Progress needs some CSS class-selector, and also some JavaScript
    code to work fine. Adds few more lines, and example will be at end :
   </para>
   <para>
    <programlisting role="php">
    <![CDATA[
<?php
require_once ('HTML/Progress.php');

$bar = new HTML_Progress();
$bar->setAnimSpeed(100);

$ui =& $bar->getUI();
?>
<style type="text/css">
<!--
<?php echo $bar->getStyle(); ?>
// -->
</style>
<script type="text/javascript">
<!--
<?php echo $bar->getScript(); ?>
//-->
</script>

<?php
echo $bar->toHtml(); 

do {
    $bar->display();
    if ($bar->getPercentComplete() == 1) {
        break;   // the progress bar has reached 100%
    }
    $bar->incValue();
} while(1);
?>
    ]]>
    </programlisting>
   </para>
   <para>
    <caution>As default increment of HTML_Progress is only +1(%), it may took few seconds before you
    could see the first cell color changed.
    </caution>
   </para>
   <para>
    The empty loop was produced by a <emphasis>do ... while(1)</emphasis>, with 3 HTML_Progress
    methods:
    <unorderedlist>
     <listitem><para>{@link HTML_Progress::display()}, to show new progress result</para>
     </listitem>
     <listitem><para>{@link HTML_Progress::getPercentComplete()}, to test end loop</para>
     </listitem>
     <listitem><para>{@link HTML_Progress::incValue()}, to ajust new progress value</para>
     </listitem>
    </unorderedlist>
   </para>
  </refsect2>
  <tip><title></title>
   To avoid that browser run under quirk mode, i suggest you to puts such DTD lines on each 
   of your xHTML document.
   <para>
    <example>
    <![CDATA[
<!DOCTYPE html
    PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
    "http://www.w3c.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
...
</html>
    ]]>
    </example>
   </para>
  </tip>
 </refsect1>
 <refsect1 id="{@id look-and-feel}">
  <title>Changing look and feel</title>
  <refsect2 id="{@id cell-style}">
   <title>Progress Bar Cell element</title>
   <para>Here you can decide if you want to have a basic bar length (10 cells), less or more.
    You may also have possibility to change all the default values.
   </para>
   <para>There are 2 main methods to add and customize the cells of a Progress Bar :
    <unorderedlist>
     <listitem><para>{@link HTML_Progress_UI::setCellCount()}, 
      more details on {@tutorial ui.setcellcount.pkg}, where you'll find a full example.</para>
     </listitem>
     <listitem><para>{@link HTML_Progress_UI::setCellAttributes()}, 
      more details on {@tutorial ui.setcellattributes.pkg}, where you'll find a full example.</para>
     </listitem>
    </unorderedlist> 
   </para>
  </refsect2>
  <refsect2 id="{@id border-style}">
   <title>Progress Bar Border element</title>
   <para>Here you can decide whether to paint or not a border, around the progress bar.
    You may also have possibility to change all the default values.
   </para>
   <para>There are 2 main methods to add and customize the border of a Progress Bar :
    <unorderedlist>
     <listitem><para>{@link HTML_Progress::setBorderPainted()}, 
      more details on {@tutorial progress.setborderpainted.pkg}, where you'll find a full example.</para>
     </listitem>
     <listitem><para>{@link HTML_Progress_UI::setBorderAttributes()}, 
      more details on {@tutorial ui.setborderattributes.pkg}, where you'll find a full example.</para>      
     </listitem>
    </unorderedlist> 
   </para>
  </refsect2>
  <refsect2 id="{@id string-style}">
   <title>Progress Bar String element</title>
   <para>Here you can decide whether to paint or not a custom string, with new value of progress bar.
    You may also have possibility to change all the default values.
   </para>
   <para>There are 3 main methods to add and customize the string of a Progress Bar :
    <unorderedlist>
     <listitem><para>{@link HTML_Progress::setStringPainted()}, 
      more details on {@tutorial progress.setstringpainted.pkg}, where you'll find a full example.</para>      
     </listitem>
     <listitem><para>{@link HTML_Progress::setString()}, 
      more details on {@tutorial progress.setstring.pkg}, where you'll find a full example.</para>      
     </listitem>
     <listitem><para>{@link HTML_Progress_UI::setStringAttributes()}, 
      more details on {@tutorial ui.setstringattributes.pkg}, where you'll find a full example.</para>      
     </listitem>
    </unorderedlist> 
   </para>
  </refsect2>
  <refsect2 id="{@id progress-style}">
   <title>Progress Bar element</title>
   <para>Here you have possibility to change all the default values (background color, width, height,
    orientation, fill way ...)
   </para>
   <para>There is only 3 main methods to customize a Progress Bar :
    <unorderedlist>
     <listitem><para>{@link HTML_Progress_UI::setProgressAttributes()}, 
      more details on {@tutorial ui.setprogressattributes.pkg}, where you'll find a full example.</para>      
     </listitem>
     <listitem><para>{@link HTML_Progress_UI::setOrientation()}, 
      more details on {@tutorial ui.setorientation.pkg}, where you'll find a full example.</para>      
     </listitem>
     <listitem><para>{@link HTML_Progress_UI::setFillWay()}, 
      more details on {@tutorial ui.setfillway.pkg}, where you'll find a full example.</para>      
     </listitem>
    </unorderedlist> 
   </para>
  </refsect2>
 </refsect1>
</refentry>