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<?php
/**
* @package php-svg-lib
* @link http://github.com/PhenX/php-svg-lib
* @author Fabien Ménager <fabien.menager@gmail.com>
* @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
*/
namespace Svg;
use Svg\Surface\SurfaceInterface;
use Svg\Tag\AbstractTag;
use Svg\Tag\Anchor;
use Svg\Tag\Circle;
use Svg\Tag\Ellipse;
use Svg\Tag\Group;
use Svg\Tag\ClipPath;
use Svg\Tag\Image;
use Svg\Tag\Line;
use Svg\Tag\LinearGradient;
use Svg\Tag\Path;
use Svg\Tag\Polygon;
use Svg\Tag\Polyline;
use Svg\Tag\Rect;
use Svg\Tag\Stop;
use Svg\Tag\Text;
use Svg\Tag\StyleTag;
use Svg\Tag\UseTag;
class Document extends AbstractTag
{
protected $filename;
public $inDefs = false;
protected $x;
protected $y;
protected $width;
protected $height;
protected $subPathInit;
protected $pathBBox;
protected $viewBox;
/** @var resource */
protected $parser;
/** @var SurfaceInterface */
protected $surface;
/** @var AbstractTag[] */
protected $stack = array();
/** @var AbstractTag[] */
protected $defs = array();
/** @var \Sabberworm\CSS\CSSList\Document[] */
protected $styleSheets = array();
public function loadFile($filename)
{
$this->filename = $filename;
}
protected function initParser() {
$parser = xml_parser_create("utf-8");
xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, false);
xml_set_element_handler(
$parser,
array($this, "_tagStart"),
array($this, "_tagEnd")
);
xml_set_character_data_handler(
$parser,
array($this, "_charData")
);
return $this->parser = $parser;
}
public function __construct() {
}
/**
* @return SurfaceInterface
*/
public function getSurface()
{
return $this->surface;
}
public function getStack()
{
return $this->stack;
}
public function getWidth()
{
return $this->width;
}
public function getHeight()
{
return $this->height;
}
public function getDimensions() {
$rootAttributes = null;
$parser = xml_parser_create("utf-8");
xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, false);
xml_set_element_handler(
$parser,
function ($parser, $name, $attributes) use (&$rootAttributes) {
if ($name === "svg" && $rootAttributes === null) {
$attributes = array_change_key_case($attributes, CASE_LOWER);
$rootAttributes = $attributes;
}
},
function ($parser, $name) {}
);
$fp = fopen($this->filename, "r");
while ($line = fread($fp, 8192)) {
xml_parse($parser, $line, false);
if ($rootAttributes !== null) {
break;
}
}
xml_parser_free($parser);
return $this->handleSizeAttributes($rootAttributes);
}
public function handleSizeAttributes($attributes){
if ($this->width === null) {
if (isset($attributes["width"])) {
$width = Style::convertSize($attributes["width"], 400);
$this->width = $width;
}
if (isset($attributes["height"])) {
$height = Style::convertSize($attributes["height"], 300);
$this->height = $height;
}
if (isset($attributes['viewbox'])) {
$viewBox = preg_split('/[\s,]+/is', trim($attributes['viewbox']));
if (count($viewBox) == 4) {
$this->x = $viewBox[0];
$this->y = $viewBox[1];
if (!$this->width) {
$this->width = $viewBox[2];
}
if (!$this->height) {
$this->height = $viewBox[3];
}
}
}
}
return array(
0 => $this->width,
1 => $this->height,
"width" => $this->width,
"height" => $this->height,
);
}
public function getDocument(){
return $this;
}
/**
* Append a style sheet
*
* @param \Sabberworm\CSS\CSSList\Document $stylesheet
*/
public function appendStyleSheet($stylesheet) {
$this->styleSheets[] = $stylesheet;
}
/**
* Get the document style sheets
*
* @return \Sabberworm\CSS\CSSList\Document[]
*/
public function getStyleSheets() {
return $this->styleSheets;
}
protected function before($attributes)
{
$surface = $this->getSurface();
$style = new DefaultStyle();
$style->inherit($this);
$style->fromAttributes($attributes);
$this->setStyle($style);
$surface->setStyle($style);
}
public function render(SurfaceInterface $surface)
{
$this->inDefs = false;
$this->surface = $surface;
$parser = $this->initParser();
if ($this->x || $this->y) {
$surface->translate(-$this->x, -$this->y);
}
$fp = fopen($this->filename, "r");
while ($line = fread($fp, 8192)) {
xml_parse($parser, $line, false);
}
xml_parse($parser, "", true);
xml_parser_free($parser);
}
protected function svgOffset($attributes)
{
$this->attributes = $attributes;
$this->handleSizeAttributes($attributes);
}
public function getDef($id) {
$id = ltrim($id, "#");
return isset($this->defs[$id]) ? $this->defs[$id] : null;
}
private function _tagStart($parser, $name, $attributes)
{
$this->x = 0;
$this->y = 0;
$tag = null;
$attributes = array_change_key_case($attributes, CASE_LOWER);
switch (strtolower($name)) {
case 'defs':
$this->inDefs = true;
return;
case 'svg':
if (count($this->attributes)) {
$tag = new Group($this, $name);
}
else {
$tag = $this;
$this->svgOffset($attributes);
}
break;
case 'path':
$tag = new Path($this, $name);
break;
case 'rect':
$tag = new Rect($this, $name);
break;
case 'circle':
$tag = new Circle($this, $name);
break;
case 'ellipse':
$tag = new Ellipse($this, $name);
break;
case 'image':
$tag = new Image($this, $name);
break;
case 'line':
$tag = new Line($this, $name);
break;
case 'polyline':
$tag = new Polyline($this, $name);
break;
case 'polygon':
$tag = new Polygon($this, $name);
break;
case 'lineargradient':
$tag = new LinearGradient($this, $name);
break;
case 'radialgradient':
$tag = new LinearGradient($this, $name);
break;
case 'stop':
$tag = new Stop($this, $name);
break;
case 'style':
$tag = new StyleTag($this, $name);
break;
case 'a':
$tag = new Anchor($this, $name);
break;
case 'g':
case 'symbol':
$tag = new Group($this, $name);
break;
case 'clippath':
$tag = new ClipPath($this, $name);
break;
case 'use':
$tag = new UseTag($this, $name);
break;
case 'text':
$tag = new Text($this, $name);
break;
}
if ($tag) {
if (isset($attributes["id"])) {
$this->defs[$attributes["id"]] = $tag;
}
else {
/** @var AbstractTag $top */
$top = end($this->stack);
if ($top && $top != $tag) {
$top->children[] = $tag;
}
}
$this->stack[] = $tag;
$tag->handle($attributes);
} else {
echo "Unknown: '$name'\n";
}
}
function _charData($parser, $data)
{
$stack_top = end($this->stack);
if ($stack_top instanceof Text || $stack_top instanceof StyleTag) {
$stack_top->appendText($data);
}
}
function _tagEnd($parser, $name)
{
/** @var AbstractTag $tag */
$tag = null;
switch (strtolower($name)) {
case 'defs':
$this->inDefs = false;
return;
case 'svg':
case 'path':
case 'rect':
case 'circle':
case 'ellipse':
case 'image':
case 'line':
case 'polyline':
case 'polygon':
case 'radialgradient':
case 'lineargradient':
case 'stop':
case 'style':
case 'text':
case 'g':
case 'symbol':
case 'clippath':
case 'use':
case 'a':
$tag = array_pop($this->stack);
break;
}
if (!$this->inDefs && $tag) {
$tag->handleEnd();
}
}
}
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