模板布局
两个核心PHP文件确定主题的布局和样式。本节将学习如何显示小部件位置和他们的显示方式
THEME.PHP
每个主题的核心文件都是 theme.php. 这不同于标准的Joomla模板使用 index.php 文件作为主要文件
下面是 theme.php.的主题结构， 它需要导入的文件 theme.config.php, 呈现小部件位置,检索配置变量和渲染系统的输出。
<?php
// get theme configuration
include($this['path']->path('layouts:theme.config.php'));
?><!DOCTYPE HTML>
<html lang="<?php echo $this['config']->get('language');?>" dir="<?php echo $this['config']->get('direction');?>" data-config='<?php echo $this['config']->get('body_config','{}');?>'>
<head>
<?php echo $this['template']->render('head');?>
</head>
<body>
// render a widget position
<?php echo $this['widgets']->render('widget-position');?>
// retrieve a config variable
<?php echo $this['config']->get('variable');?>
// render the system output
<?php echo $this['template']->render('content');?>
</body>
</html>配置对象
在 config.xml 获取值，存储在 config 对象.读取有效的值, 使用 get 方法.
// output the value of the branding variable<?php echo $this['config']->get('theme_branding');?>
// output the to-top scroller based on the theme setting<?php if($this['config']->get('totop_scroller')):?><a class="tm-totop-scroller" data-uk="smooth-scroll" href="#"></a><?php endif;>Widget object
The widgets of the page are stored in the widgets object. To render all widgets in a position, use the render method. You can check, whether any widgets are published in a position, by using the count method.
<// render all widgets in Top A position
<?php echo $this['widgets']->render('top-a'));?>
// apply the parallel layout to all widgets in Top A position
<?php if($this['widgets']->count('top-a')):?><?php echo $this['widgets']->render('top-a', array('layout'=>'parallel'));?><?php endif;?>THEME.CONFIG.PHP
While the theme.php basically only defines the theme's markup, the logic is outsourced to the theme.config.php. It is responsible for calculations, like the 3 column layout as well as the body classes and social buttons.
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