/**
* Clip to current path
* Uses the current path as clipping path, and terminate the path.
*
* @return bool Returns TRUE on success or FALSE on failure.
*/
public function clip()
{
if (!is_array($this->_last_geometry)) {
$this->_errmsg = "No Geometry";
return false;
}
if (!$this->_page) {
$this->_errmsg = "No Page";
return false;
}
$shape = $this->_last_geometry[0];
switch ($shape) {
case 'rect':
$this->_page->clipRectangle($this->_last_geometry[1][0], $this->_last_geometry[1][1], $this->_last_geometry[1][0] + $this->_last_geometry[1][2], $this->_last_geometry[1][1] + $this->_last_geometry[1][3]);
return true;
break;
}
$this->_errmsg = "Unknown shape '{$shape}'";
return false;
}
/**
* @param ZendPage $page
* @param Viewport $viewport
* @param float $x
* @param float $y
* @param float $width
* @param float $height
* @param bool $keepRatio
*/
private function translateAndClipToViewport(ZendPage $page, Viewport $viewport, $x, $y, $width, $height, $keepRatio = true)
{
$scaleX = $width / $viewport->getWidth();
$scaleY = $height / $viewport->getHeight();
$mx = -$viewport->getX();
$my = -$viewport->getY();
if ($keepRatio) {
if ($scaleX < $scaleY) {
$scaleY = $scaleX;
// center viewport
$my += ($height / $scaleY - $viewport->getHeight()) / 2;
} else {
$scaleX = $scaleY;
// center viewport
$mx += ($width / $scaleX - $viewport->getWidth()) / 2;
}
}
// translate origin to $x/$y
$page->translate($x, $y);
// scale to viewport
$page->scale($scaleX, $scaleY);
// translate origin to (centered) $viewport origin
$page->translate($mx, $my);
// clip viewport
$page->clipRectangle($viewport->getX(), $viewport->getY(), $viewport->getX() + $viewport->getHeight(), $viewport->getY() + $viewport->getWidth());
}
