/**
* @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());
}
