/**
* Generates the HTML for the represented <source> or <img> element.
*
* @param SrcsetGeneratorInterface $srcset_gen
* The generator instance that will be used to generate the srcset
* attributes.
* @param mixed $image
* The image representation that will be passed to $srcset_gen
* @param string $alt
* The for an <img> `alt` attribute. Only used if $this->as_img is true.
*
* @return string
* The HTML for either a <source> or <img> element depending on the value
*
* @see SrcsetGeneratorInterface
*/
public function renderWith(SrcsetGeneratorInterface $srcset_gen, $image, $alt = '')
{
$last = F\last($this->sizes);
$srcset = F\map($this->sizes, function (Size $size) use($image, $srcset_gen) {
return $srcset_gen->listFor($image, $size);
});
$srcset = F\unique(F\flatten($srcset), function (Src $src) {
return $src->getUrl();
});
# Not really needed, but makes debugging nicer.
usort($srcset, function (Src $l, Src $r) {
$l = $l->getWidth() ?: (int) $l->getMultiplier();
$r = $r->getWidth() ?: (int) $r->getMultiplier();
return $l - $r;
});
$srcset = implode(', ', $srcset);
$sizes = F\map($this->sizes, function (Size $size) use($last) {
return $size === $last ? $size->renderWidthOnly() : (string) $size;
});
$sizes = implode(', ', $sizes);
$media = !$this->as_img ? ' media="' . $last->getMediaQuery() . '"' : '';
$alt = $this->as_img ? ' alt="' . htmlspecialchars($alt) . '"' : '';
$attributes = "srcset=\"{$srcset}\" sizes=\"{$sizes}\"{$media}{$alt}";
return $this->as_img ? "<img {$attributes}>" : "<source {$attributes}>";
}
public function testPassNonCallableUndefinedFunction()
{
$this->expectArgumentError("Argument 2 passed to Functional\\unique() must be callable");
unique($this->list, 'undefinedFunction');
}
/**
* Find the styles that that match the passed size.
*
* @param RImg\Size $size
* The size instance to match styles to.
*
* @return \stdClass[]
* List of styles that fit the passed size. Same object definition as
* $this->getStyles().
*
* @see DrupalImageStyle::getStyles()
*/
private function stylesMatchingSize(RImg\Size $size)
{
# @todo Support Size instances without aspect ratio restrictions.
# @todo Support Size instances with only width or only height restrictions.
$styles = F\filter($this->getStyles(), function ($style) use($size) {
return $style->firm and $size->matchesAspectRatio($style->width / $style->height);
});
$min_width = $size->getMinWidth();
$max_width = $size->getMaxWidth();
$styles = F\group($styles, function ($style) use($min_width, $max_width) {
if ($style->width < $min_width) {
return 'less';
}
if ($style->width > $max_width * 2) {
# Multiplied for high DPI displays.
return 'greater';
}
return 'within';
});
if (!empty($styles['greater'])) {
# Make sure the end of the range is covered.
$styles['within'][] = F\head($styles['greater']);
}
if (empty($styles['within'])) {
if (!empty($styles['less'])) {
# Better to have something too small than something too non-existent.
$styles = [F\last($styles['less'])];
} else {
$styles = [];
}
} else {
$styles = $styles['within'];
}
return F\unique($styles, function ($s) {
return $s->width;
});
}
