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phorge/src/applications/files/document/PhabricatorImageDocumentEngine.php
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PhabricatorImageDocumentEngine.php
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<?php
final class PhabricatorImageDocumentEngine
extends PhabricatorDocumentEngine {
const ENGINEKEY = 'image';
public function getViewAsLabel(PhabricatorDocumentRef $ref) {
return pht('View as Image');
}
protected function getDocumentIconIcon(PhabricatorDocumentRef $ref) {
return 'fa-file-image-o';
}
protected function getByteLengthLimit() {
return (1024 * 1024 * 64);
}
public function canDiffDocuments(
?PhabricatorDocumentRef $uref = null,
?PhabricatorDocumentRef $vref = null) {
// For now, we can only render a rich image diff if the documents have
// their data stored in Files already.
if ($uref && !$uref->getFile()) {
return false;
}
if ($vref && !$vref->getFile()) {
return false;
}
return true;
}
public function newEngineBlocks(
?PhabricatorDocumentRef $uref = null,
?PhabricatorDocumentRef $vref = null) {
if ($uref) {
$u_blocks = $this->newDiffBlocks($uref);
} else {
$u_blocks = array();
}
if ($vref) {
$v_blocks = $this->newDiffBlocks($vref);
} else {
$v_blocks = array();
}
return id(new PhabricatorDocumentEngineBlocks())
->addBlockList($uref, $u_blocks)
->addBlockList($vref, $v_blocks);
}
public function newBlockDiffViews(
PhabricatorDocumentRef $uref,
PhabricatorDocumentEngineBlock $ublock,
PhabricatorDocumentRef $vref,
PhabricatorDocumentEngineBlock $vblock) {
$u_content = $this->newBlockContentView($uref, $ublock);
$v_content = $this->newBlockContentView($vref, $vblock);
return id(new PhabricatorDocumentEngineBlockDiff())
->setOldContent($u_content)
->addOldClass('diff-image-cell')
->setNewContent($v_content)
->addNewClass('diff-image-cell');
}
private function newDiffBlocks(PhabricatorDocumentRef $ref) {
$blocks = array();
$file = $ref->getFile();
$image_view = phutil_tag(
'div',
array(
'class' => 'differential-image-stage',
),
phutil_tag(
'img',
array(
'alt' => $file->getAltText(),
'src' => $file->getBestURI(),
)));
$hash = $file->getContentHash();
$blocks[] = id(new PhabricatorDocumentEngineBlock())
->setBlockKey('1')
->setDifferenceHash($hash)
->setContent($image_view);
return $blocks;
}
protected function canRenderDocumentType(PhabricatorDocumentRef $ref) {
$file = $ref->getFile();
if ($file) {
return $file->isViewableImage();
}
$viewable_types = PhabricatorEnv::getEnvConfig('files.viewable-mime-types');
$viewable_types = array_keys($viewable_types);
$image_types = PhabricatorEnv::getEnvConfig('files.image-mime-types');
$image_types = array_keys($image_types);
return
$ref->hasAnyMimeType($viewable_types) &&
$ref->hasAnyMimeType($image_types);
}
protected function newDocumentContent(PhabricatorDocumentRef $ref) {
$file = $ref->getFile();
if ($file) {
$source_uri = $file->getViewURI();
} else {
// We could use a "data:" URI here. It's not yet clear if or when we'll
// have a ref but no backing file.
throw new PhutilMethodNotImplementedException();
}
$image = phutil_tag(
'img',
array(
'alt' => $file->getAltText(),
'src' => $source_uri,
));
$linked_image = phutil_tag(
'a',
array(
'href' => $source_uri,
'rel' => 'noreferrer',
),
$image);
$container = phutil_tag(
'div',
array(
'class' => 'document-engine-image',
),
$linked_image);
return $container;
}
}

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