Swf.php

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1. SWF Compiler for XmlWiki Environment

$server = $_SERVER['HTTP_HOST']; $htdocs = $_SERVER['DOCUMENT_ROOT']; if ( !ereg( "\\/$", $htdocs ) ) $htdocs .= '/';

xwSetProperty( $properties, 'language', 'raw' );

1. Read in relevent properties
2. - also supplies defaults
3. - and constructs link which requests the raw compiled SWF
4. - also adds each property as a constant to the script

$t = ereg_replace( '\\.as$', '.swf', $title ); $tag = ereg( '(\\w+)$', $path, $m ) ? $m[1] : 'swf'; $src = "$script?title=$title&xpath:/properties:language=raw&xpath:/properties:data=$tTitle&xpath:/properties:$tag"; foreach ( array(

'width' => 550, 'height' => 400, 'fps' => 12, 'background' => 'ffffff', 'quality' => 'medium', 'flashvars' => , 'format' => 'embed', 'version' => 6, 'url' => "www/$t"

) as $key => $value ) { if ( !xwGetProperty( $properties, "xpath:$path/$key", $$key ) ) $$key = $value; $value = $$key; $src .= "&xpath:$path:$key=".( ( $key == 'format' ) ? 'raw' : $value ); $article = "$key='$value';\n$article"; }

1. Have to add imports to src url

foreach ( xwGetListByTagname( $properties, 'import', $import ) as $image ) $src .= "&xpath:$path:import=$image";

1. if format is embed, just convert the content to an object-tag referring to raw-compiled-swf

if ( $format == 'embed' ) { $article = "<object classid=\"clsid:D27CDB6E-AE6D-11cf-96B8-444553540000\" codebase=\"http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=$version,0,0,0\" width=$width height=$height id=\"$src\" align=\"\" type=\"application/x-shockwave-flash\" data=\"$src\"> <param name=flashvars value=\"$flashvars\"> <param name=movie value=\"$src\"> <param name=quality value=\"$quality\"> <param name=bgcolor value=\"$background\"> <embed src=\"$src\" quality=\"$quality\" bgcolor=\"$background\" width=$width height=$height align=\"\" flashvars=\"$flashvars\" name=\"$src\" type=\"application/x-shockwave-flash\" pluginspage=\"http://www.macromedia.com/go/getflashplayer\" /> </object>"; }

else {

1. Compile the script into a binary SWF
2. - also builds hard wired common vector shapes (later converted to Ming from SVG)

1. Check weather required extentions are available (GD2 and Ming)

$ext = get_loaded_extensions(); if ( !in_array( 'ming', $ext ) ) xwMessage( 'Ming extention not loaded! (at least version 0.3 required)', 'red' );

ming_useswfversion( $version ); global $lib, $swf; $lib = array(); $swf = new SWFMovie(); $swf->setDimension( $width, $height ); eregi( '^#?([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])$' , $background, $m ); list(,$r,$g,$b) = $m; $swf->setBackground( hexdec($r), hexdec($g), hexdec($b) ); $swf->setRate( $fps ); xwMessage( "SWF movie created from \"$title\": $width"." x $height @ $fps".'fps' );

1. Don't redeclare (happens if more than one compile on same page)

if ( !isset( $GLOBALS[$tTitle] ) ) {

$GLOBALS[$tTitle] = true;

# Make symbol library available at runtime in library array function libAdd( $item, $name ) { global $lib, $swf; $sym = new SWFSprite(); $sym->add( $item ); $sym->nextFrame(); $swf->addExport( $sym, $lib[] = $name ); }

}

1. Import images

foreach ( xwGetListByTagname( $properties, 'import', $import ) as $image ) { $ref = strtolower( trim( ereg_replace( '^.*/', , $image ) ) ); $ref = ereg_replace( '\\..+$', , $ref ); $w = $htdocs.'wiki'; shell_exec( "$w/png2dbl $htdocs$image $w/$ref.dbl" ); # investigate creating a unix level pipe and reading a la /dev #$img = new SWFBitmap( popen( "$w/png2dbl $w$image $w/stream.dbl", 'rb' ) ); $img = new SWFBitmap( fopen( "$w/$ref.dbl", 'rb' ) ); libAdd( $img, $ref ); }

$grad = new SWFGradient(); for ( $n = 0; $n <= 10; $n++ ) { $i = ( 2 - log( $n + 1 ) * 0.95 ) * 125; if ( $i > 255 ) $i = 255; else if ( $i < 0 ) $i = 0; $grad->addEntry( $n / 10, 255, 255, 255, $i ); } $shape = new SWFShape(); $fill = $shape->addFill( $grad, SWFFILL_RADIAL_GRADIENT ); $fill->scaleTo( 0.17 ); $shape->setRightFill( $fill ); $shape->drawCircle( 100 ); libAdd( $shape, 'star' );

1. Add compile.as common code

$article = xwArticleContent( 'compile.as' ).$article;

1. Write exports and make all available at runtime in library array

$swf->writeExports(); $article = 'library=array("'.join( '","', $lib )."\");\n$article"; if ( count( $lib ) ) xwMessage( 'Pre-compiled symbols: "'.join( '", "', $lib ).'"' );

1. Flashvars aren't working just compile assignments into script for now

foreach( split( '&', $flashvars ) as $var ) if ( ereg( '^(.+)=(.+)$', $var, $m ) ) $article = "$m[1]='$m[2]';\n$article";

1. Replace #Include statements with content

$includes = array(); $more = true; while ( $more ) { $more = count( $includes ); $article = preg_replace( '/^\\s*#include\\s+[\'"](.+?)[\'"].*?$/emi', 'xwArticleContent($includes["$1"]="$1",true);', $article ); $more = count( $includes ) > $more; } if ( count( $includes ) ) xwMessage( 'Included articles: "'.join( '", "', array_keys( $includes ) ).'"' );

1. Fix the ^= operator which doesn't work in Ming but does in Flash

$article = preg_replace( '/([a-z_]+[a-z_0-9.]+)\\s*\\^=/i', '$1=$1^', $article );

1. Add actionscript in frames 1-3

$swf->add( new SWFAction( $article ) ); $swf->nextFrame(); $swf->add( new SWFAction( 'internal_reduce();' ) ); $swf->nextFrame(); $swf->add( new SWFAction( 'gotoAndPlay(2);' ) ); $swf->nextFrame();

if ( $format == 'raw' ) { # Send the raw SWF back to the client and die ob_end_clean(); header( 'Content-Type: application/x-shockwave-flash' ); $swf->output(9); die(); } else { # Write the SWF to $url and render a link to it

$swf->save( "$htdocs$url" ,9 ); $article = "\n$title successfully compiled to $server/$url\n"; }

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