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WordPress/wp-admin/custom-header.php

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PHP
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<?php
/**
* The custom header image script.
*
* @package WordPress
* @subpackage Administration
*/
/**
* The custom header image class.
*
* @since unknown
* @package WordPress
* @subpackage Administration
*/
class Custom_Image_Header {
/**
* Callback for administration header.
*
* @var callback
* @since unknown
* @access private
*/
var $admin_header_callback;
/**
* Callback for header div.
*
* @var callback
* @since unknown
* @access private
*/
var $admin_image_div_callback;
/**
* PHP4 Constructor - Register administration header callback.
*
* @since unknown
* @param callback $admin_header_callback
* @param callback $admin_image_div_callback Optional custom image div output callback.
* @return Custom_Image_Header
*/
function Custom_Image_Header($admin_header_callback, $admin_image_div_callback = '') {
$this->admin_header_callback = $admin_header_callback;
$this->admin_image_div_callback = $admin_image_div_callback;
}
/**
* Setup the hooks for the Custom Header admin page.
*
* @since unknown
*/
function init() {
if ( ! current_user_can('switch_themes') )
return;
$page = add_theme_page(__('Custom Header'), __('Custom Header'), 'switch_themes', 'custom-header', array(&$this, 'admin_page'));
add_action("admin_print_scripts-$page", array(&$this, 'js_includes'));
add_action("admin_print_styles-$page", array(&$this, 'css_includes'));
add_action("admin_head-$page", array(&$this, 'take_action'), 50);
add_action("admin_head-$page", array(&$this, 'js'), 50);
add_action("admin_head-$page", $this->admin_header_callback, 51);
}
/**
* Get the current step.
*
* @since unknown
*
* @return int Current step
*/
function step() {
if ( ! isset( $_GET['step'] ) )
return 1;
$step = (int) $_GET['step'];
if ( $step < 1 || 3 < $step )
$step = 1;
return $step;
}
/**
* Setup the enqueue for the JavaScript files.
*
* @since unknown
*/
function js_includes() {
$step = $this->step();
if ( 1 == $step )
wp_enqueue_script('farbtastic');
elseif ( 2 == $step )
wp_enqueue_script('jcrop');
}
/**
* Setup the enqueue for the CSS files
*
* @since 2.7
*/
function css_includes() {
$step = $this->step();
if ( 1 == $step )
wp_enqueue_style('farbtastic');
elseif ( 2 == $step )
wp_enqueue_style('jcrop');
}
/**
* Execute custom header modification.
*
* @since unknown
*/
function take_action() {
if ( ! current_user_can('switch_themes') )
return;
if ( isset( $_POST['textcolor'] ) ) {
check_admin_referer('custom-header');
if ( 'blank' == $_POST['textcolor'] ) {
set_theme_mod('header_textcolor', 'blank');
} else {
$color = preg_replace('/[^0-9a-fA-F]/', '', $_POST['textcolor']);
if ( strlen($color) == 6 || strlen($color) == 3 )
set_theme_mod('header_textcolor', $color);
}
}
if ( isset($_POST['resetheader']) ) {
check_admin_referer('custom-header');
remove_theme_mods();
}
}
/**
* Execute Javascript depending on step.
*
* @since unknown
*/
function js() {
$step = $this->step();
if ( 1 == $step )
$this->js_1();
elseif ( 2 == $step )
$this->js_2();
}
/**
* Display Javascript based on Step 1.
*
* @since unknown
*/
function js_1() { ?>
<script type="text/javascript">
var buttons = ['#name', '#desc', '#pickcolor', '#defaultcolor'];
var farbtastic;
function pickColor(color) {
jQuery('#name').css('color', color);
jQuery('#desc').css('color', color);
jQuery('#textcolor').val(color);
farbtastic.setColor(color);
}
jQuery(document).ready(function() {
jQuery('#pickcolor').click(function() {
jQuery('#colorPickerDiv').show();
});
jQuery('#hidetext').click(function() {
toggle_text();
});
farbtastic = jQuery.farbtastic('#colorPickerDiv', function(color) { pickColor(color); });
pickColor('#<?php echo get_theme_mod('header_textcolor', HEADER_TEXTCOLOR); ?>');
<?php if ( 'blank' == get_theme_mod('header_textcolor', HEADER_TEXTCOLOR) ) { ?>
toggle_text();
<?php } ?>
});
jQuery(document).mousedown(function(){
// Make the picker disappear, since we're using it in an independant div
hide_picker();
});
function colorDefault() {
pickColor('#<?php echo HEADER_TEXTCOLOR; ?>');
}
function hide_picker(what) {
var update = false;
jQuery('#colorPickerDiv').each(function(){
var id = jQuery(this).attr('id');
if (id == what) {
return;
}
var display = jQuery(this).css('display');
if (display == 'block') {
jQuery(this).fadeOut(2);
}
});
}
function toggle_text(force) {
if (jQuery('#textcolor').val() == 'blank') {
//Show text
jQuery( buttons.toString() ).show();
jQuery('#textcolor').val('<?php echo HEADER_TEXTCOLOR; ?>');
jQuery('#hidetext').val('<?php _e('Hide Text'); ?>');
}
else {
//Hide text
jQuery( buttons.toString() ).hide();
jQuery('#textcolor').val('blank');
jQuery('#hidetext').val('<?php _e('Show Text'); ?>');
}
}
</script>
<?php
}
/**
* Display Javascript based on Step 2.
*
* @since unknown
*/
function js_2() { ?>
<script type="text/javascript">
function onEndCrop( coords ) {
jQuery( '#x1' ).val(coords.x);
jQuery( '#y1' ).val(coords.y);
jQuery( '#x2' ).val(coords.x2);
jQuery( '#y2' ).val(coords.y2);
jQuery( '#width' ).val(coords.w);
jQuery( '#height' ).val(coords.h);
}
// with a supplied ratio
jQuery(document).ready(function() {
var xinit = <?php echo HEADER_IMAGE_WIDTH; ?>;
var yinit = <?php echo HEADER_IMAGE_HEIGHT; ?>;
var ratio = xinit / yinit;
var ximg = jQuery('#upload').width();
var yimg = jQuery('#upload').height();
//set up default values
jQuery( '#x1' ).val(0);
jQuery( '#y1' ).val(0);
jQuery( '#x2' ).val(xinit);
jQuery( '#y2' ).val(yinit);
jQuery( '#width' ).val(xinit);
jQuery( '#height' ).val(yinit);
if ( yimg < yinit || ximg < xinit ) {
if ( ximg / yimg > ratio ) {
yinit = yimg;
xinit = yinit * ratio;
} else {
xinit = ximg;
yinit = xinit / ratio;
}
}
jQuery('#upload').Jcrop({
aspectRatio: ratio,
setSelect: [ 0, 0, xinit, yinit ],
onSelect: onEndCrop
});
});
</script>
<?php
}
/**
* Display first step of custom header image page.
*
* @since unknown
*/
function step_1() {
if ( isset($_GET['updated']) && $_GET['updated'] ) { ?>
<div id="message" class="updated">
<p><?php printf(__('Header updated. <a href="%s">Visit your site</a> to see how it looks.'), home_url()); ?></p>
</div>
<?php } ?>
<div class="wrap">
<?php screen_icon(); ?>
<h2><?php _e('Your Header Image'); ?></h2>
<p><?php _e('This is your header image. You can change the text color or upload and crop a new image.'); ?></p>
<?php
if ( $this->admin_image_div_callback ) {
call_user_func($this->admin_image_div_callback);
} else {
?>
<div id="headimg" style="background-image: url(<?php esc_url(header_image()) ?>);">
<h1><a onclick="return false;" href="<?php bloginfo('url'); ?>" title="<?php bloginfo('name'); ?>" id="name"><?php bloginfo('name'); ?></a></h1>
<div id="desc"><?php bloginfo('description');?></div>
</div>
<?php } ?>
<?php if ( !defined( 'NO_HEADER_TEXT' ) ) { ?>
<form method="post" action="<?php echo admin_url('themes.php?page=custom-header&amp;updated=true') ?>">
<input type="button" class="button" value="<?php esc_attr_e('Hide Text'); ?>" onclick="hide_text()" id="hidetext" />
<input type="button" class="button" value="<?php esc_attr_e('Select a Text Color'); ?>" id="pickcolor" /><input type="button" class="button" value="<?php esc_attr_e('Use Original Color'); ?>" onclick="colorDefault()" id="defaultcolor" />
<?php wp_nonce_field('custom-header') ?>
<input type="hidden" name="textcolor" id="textcolor" value="#<?php esc_attr(header_textcolor()) ?>" /><input name="submit" type="submit" class="button" value="<?php esc_attr_e('Save Changes'); ?>" /></form>
<?php } ?>
<div id="colorPickerDiv" style="z-index: 100;background:#eee;border:1px solid #ccc;position:absolute;display:none;"> </div>
</div>
<div class="wrap">
<h2><?php _e('Upload New Header Image'); ?></h2><p><?php _e('Here you can upload a custom header image to be shown at the top of your blog instead of the default one. On the next screen you will be able to crop the image.'); ?></p>
<p><?php printf(__('Images of exactly <strong>%1$d x %2$d pixels</strong> will be used as-is.'), HEADER_IMAGE_WIDTH, HEADER_IMAGE_HEIGHT); ?></p>
<form enctype="multipart/form-data" id="uploadForm" method="POST" action="<?php echo esc_attr(add_query_arg('step', 2)) ?>" style="margin: auto; width: 50%;">
<label for="upload"><?php _e('Choose an image from your computer:'); ?></label><br /><input type="file" id="upload" name="import" />
<input type="hidden" name="action" value="save" />
<?php wp_nonce_field('custom-header') ?>
<p class="submit">
<input type="submit" value="<?php esc_attr_e('Upload'); ?>" />
</p>
</form>
</div>
<?php if ( get_theme_mod('header_image') || get_theme_mod('header_textcolor') ) : ?>
<div class="wrap">
<h2><?php _e('Reset Header Image and Color'); ?></h2>
<p><?php _e('This will restore the original header image and color. You will not be able to retrieve any customizations.') ?></p>
<form method="post" action="<?php echo esc_attr(add_query_arg('step', 1)) ?>">
<?php wp_nonce_field('custom-header'); ?>
<input type="submit" class="button" name="resetheader" value="<?php esc_attr_e('Restore Original Header'); ?>" />
</form>
</div>
<?php endif;
}
/**
* Display second step of custom header image page.
*
* @since unknown
*/
function step_2() {
check_admin_referer('custom-header');
$overrides = array('test_form' => false);
$file = wp_handle_upload($_FILES['import'], $overrides);
if ( isset($file['error']) )
die( $file['error'] );
$url = $file['url'];
$type = $file['type'];
$file = $file['file'];
$filename = basename($file);
// Construct the object array
$object = array(
'post_title' => $filename,
'post_content' => $url,
'post_mime_type' => $type,
'guid' => $url);
// Save the data
$id = wp_insert_attachment($object, $file);
list($width, $height, $type, $attr) = getimagesize( $file );
if ( $width == HEADER_IMAGE_WIDTH && $height == HEADER_IMAGE_HEIGHT ) {
// Add the meta-data
wp_update_attachment_metadata( $id, wp_generate_attachment_metadata( $id, $file ) );
set_theme_mod('header_image', esc_url($url));
do_action('wp_create_file_in_uploads', $file, $id); // For replication
return $this->finished();
} elseif ( $width > HEADER_IMAGE_WIDTH ) {
$oitar = $width / HEADER_IMAGE_WIDTH;
$image = wp_crop_image($file, 0, 0, $width, $height, HEADER_IMAGE_WIDTH, $height / $oitar, false, str_replace(basename($file), 'midsize-'.basename($file), $file));
if ( is_wp_error( $image ) )
wp_die( __( 'Image could not be processed. Please go back and try again.' ), __( 'Image Processing Error' ) );
$image = apply_filters('wp_create_file_in_uploads', $image, $id); // For replication
$url = str_replace(basename($url), basename($image), $url);
$width = $width / $oitar;
$height = $height / $oitar;
} else {
$oitar = 1;
}
?>
<div class="wrap">
<form method="POST" action="<?php echo esc_attr(add_query_arg('step', 3)) ?>">
<p><?php _e('Choose the part of the image you want to use as your header.'); ?></p>
<div id="testWrap" style="position: relative">
<img src="<?php echo $url; ?>" id="upload" width="<?php echo $width; ?>" height="<?php echo $height; ?>" />
</div>
<p class="submit">
<input type="hidden" name="x1" id="x1" />
<input type="hidden" name="y1" id="y1" />
<input type="hidden" name="x2" id="x2" />
<input type="hidden" name="y2" id="y2" />
<input type="hidden" name="width" id="width" />
<input type="hidden" name="height" id="height" />
<input type="hidden" name="attachment_id" id="attachment_id" value="<?php echo esc_attr($id); ?>" />
<input type="hidden" name="oitar" id="oitar" value="<?php echo esc_attr($oitar); ?>" />
<?php wp_nonce_field('custom-header') ?>
<input type="submit" value="<?php esc_attr_e('Crop Header'); ?>" />
</p>
</form>
</div>
<?php
}
/**
* Display third step of custom header image page.
*
* @since unknown
*/
function step_3() {
check_admin_referer('custom-header');
if ( $_POST['oitar'] > 1 ) {
$_POST['x1'] = $_POST['x1'] * $_POST['oitar'];
$_POST['y1'] = $_POST['y1'] * $_POST['oitar'];
$_POST['width'] = $_POST['width'] * $_POST['oitar'];
$_POST['height'] = $_POST['height'] * $_POST['oitar'];
}
$original = get_attached_file( $_POST['attachment_id'] );
$cropped = wp_crop_image($_POST['attachment_id'], $_POST['x1'], $_POST['y1'], $_POST['width'], $_POST['height'], HEADER_IMAGE_WIDTH, HEADER_IMAGE_HEIGHT);
if ( is_wp_error( $cropped ) )
wp_die( __( 'Image could not be processed. Please go back and try again.' ), __( 'Image Processing Error' ) );
$cropped = apply_filters('wp_create_file_in_uploads', $cropped, $_POST['attachment_id']); // For replication
$parent = get_post($_POST['attachment_id']);
$parent_url = $parent->guid;
$url = str_replace(basename($parent_url), basename($cropped), $parent_url);
// Construct the object array
$object = array(
'ID' => $_POST['attachment_id'],
'post_title' => basename($cropped),
'post_content' => $url,
'post_mime_type' => 'image/jpeg',
'guid' => $url
);
// Update the attachment
wp_insert_attachment($object, $cropped);
wp_update_attachment_metadata( $_POST['attachment_id'], wp_generate_attachment_metadata( $_POST['attachment_id'], $cropped ) );
set_theme_mod('header_image', $url);
// cleanup
$medium = str_replace(basename($original), 'midsize-'.basename($original), $original);
@unlink( apply_filters( 'wp_delete_file', $medium ) );
@unlink( apply_filters( 'wp_delete_file', $original ) );
return $this->finished();
}
/**
* Display last step of custom header image page.
*
* @since unknown
*/
function finished() {
$_GET['updated'] = 1;
$this->step_1();
}
/**
* Display the page based on the current step.
*
* @since unknown
*/
function admin_page() {
if ( ! current_user_can('switch_themes') )
wp_die(__('You do not have permission to customize headers.'));
$step = $this->step();
if ( 1 == $step )
$this->step_1();
elseif ( 2 == $step )
$this->step_2();
elseif ( 3 == $step )
$this->step_3();
}
}
?>
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