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<?php
/**
* Base class for the output of MediaHandler::doTransform() and File::transform().
*
* @addtogroup Media
*/
abstract class MediaTransformOutput {
var $file, $width, $height, $url, $page, $path;
/**
* Get the width of the output box
*/
function getWidth() {
return $this->width;
}
/**
* Get the height of the output box
*/
function getHeight() {
return $this->height;
}
/**
* @return string The thumbnail URL
*/
function getUrl() {
return $this->url;
}
/**
* @return string Destination file path (local filesystem)
*/
function getPath() {
return $this->path;
}
/**
* Fetch HTML for this transform output
*
* @param array $options Associative array of options. Boolean options
* should be indicated with a value of true for true, and false or
* absent for false.
*
* alt Alternate text or caption
* desc-link Boolean, show a description link
* file-link Boolean, show a file download link
* valign vertical-align property, if the output is an inline element
* img-class Class applied to the <img> tag, if there is such a tag
*
* For images, desc-link and file-link are implemented as a click-through. For
* sounds and videos, they may be displayed in other ways.
*
* @return string
*/
abstract function toHtml( $options = array() );
/**
* This will be overridden to return true in error classes
*/
function isError() {
return false;
}
/**
* Wrap some XHTML text in an anchor tag with the given attributes
*/
protected function linkWrap( $linkAttribs, $contents ) {
if ( $linkAttribs ) {
return Xml::tags( 'a', $linkAttribs, $contents );
} else {
return $contents;
}
}
function getDescLinkAttribs( $alt = false ) {
$query = $this->page ? ( 'page=' . urlencode( $this->page ) ) : '';
$title = $this->file->getTitle();
if ( strval( $alt ) === '' ) {
$alt = $title->getText();
}
return array(
'href' => $this->file->getTitle()->getLocalURL( $query ),
'class' => 'image',
'title' => $alt
);
}
}
/**
* Media transform output for images
*
* @addtogroup Media
*/
class ThumbnailImage extends MediaTransformOutput {
/**
* @param string $path Filesystem path to the thumb
* @param string $url URL path to the thumb
* @private
*/
function ThumbnailImage( $file, $url, $width, $height, $path = false, $page = false ) {
$this->file = $file;
$this->url = $url;
# These should be integers when they get here.
# If not, there's a bug somewhere. But let's at
# least produce valid HTML code regardless.
$this->width = round( $width );
$this->height = round( $height );
$this->path = $path;
$this->page = $page;
}
/**
* Return HTML <img ... /> tag for the thumbnail, will include
* width and height attributes and a blank alt text (as required).
*
* @param array $options Associative array of options. Boolean options
* should be indicated with a value of true for true, and false or
* absent for false.
*
* alt Alternate text or caption
* desc-link Boolean, show a description link
* file-link Boolean, show a file download link
* valign vertical-align property, if the output is an inline element
* img-class Class applied to the <img> tag, if there is such a tag
*
* For images, desc-link and file-link are implemented as a click-through. For
* sounds and videos, they may be displayed in other ways.
*
* @return string
* @public
*/
function toHtml( $options = array() ) {
if ( count( func_get_args() ) == 2 ) {
throw new MWException( __METHOD__ .' called in the old style' );
}
$alt = empty( $options['alt'] ) ? '' : $options['alt'];
if ( !empty( $options['desc-link'] ) ) {
$linkAttribs = $this->getDescLinkAttribs( $alt );
} elseif ( !empty( $options['file-link'] ) ) {
$linkAttribs = array( 'href' => $this->file->getURL() );
} else {
$linkAttribs = false;
}
$attribs = array(
'alt' => $alt,
'src' => $this->url,
'width' => $this->width,
'height' => $this->height,
'border' => 0,
);
if ( !empty( $options['valign'] ) ) {
$attribs['style'] = "vertical-align: {$options['valign']}";
}
if ( !empty( $options['img-class'] ) ) {
$attribs['class'] = $options['img-class'];
}
return $this->linkWrap( $linkAttribs, Xml::element( 'img', $attribs ) );
}
}
/**
* Basic media transform error class
*
* @addtogroup Media
*/
class MediaTransformError extends MediaTransformOutput {
var $htmlMsg, $textMsg, $width, $height, $url, $path;
function __construct( $msg, $width, $height /*, ... */ ) {
$args = array_slice( func_get_args(), 3 );
$htmlArgs = array_map( 'htmlspecialchars', $args );
$htmlArgs = array_map( 'nl2br', $htmlArgs );
$this->htmlMsg = wfMsgReplaceArgs( htmlspecialchars( wfMsgGetKey( $msg, true ) ), $htmlArgs );
$this->textMsg = wfMsgReal( $msg, $args );
$this->width = intval( $width );
$this->height = intval( $height );
$this->url = false;
$this->path = false;
}
function toHtml( $options = array() ) {
return "<table class=\"MediaTransformError\" style=\"" .
"width: {$this->width}px; height: {$this->height}px;\"><tr><td>" .
$this->htmlMsg .
"</td></tr></table>";
}
function toText() {
return $this->textMsg;
}
function getHtmlMsg() {
return $this->htmlMsg;
}
function isError() {
return true;
}
}
/**
* Shortcut class for parameter validation errors
*
* @addtogroup Media
*/
class TransformParameterError extends MediaTransformError {
function __construct( $params ) {
parent::__construct( 'thumbnail_error',
max( isset( $params['width'] ) ? $params['width'] : 0, 180 ),
max( isset( $params['height'] ) ? $params['height'] : 0, 180 ),
wfMsg( 'thumbnail_invalid_params' ) );
}
}
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