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Improve image thumbnailing and increase the size of Macro thumbnails

Summary:
Alternate proposal for D3635.

  - Works better with small images.
  - Produces a predictable thumbnail size.
  - Somewhat reasonable output on 3000x10 images.
  - Increase the size of Macro thumbnails to 240px.

Test Plan: {F20497}

Reviewers: vrana, chad

Reviewed By: vrana

CC: aran

Differential Revision: https://secure.phabricator.com/D3638
This commit is contained in:
epriestley 2012-10-08 13:26:10 -07:00
parent 74644d5210
commit 85d6f7a66e
6 changed files with 81 additions and 28 deletions

View file

@ -47,6 +47,20 @@ final class PhabricatorImageTransformer {
));
}
public function executePreviewTransform(
PhabricatorFile $file,
$size) {
$image = $this->generatePreview($file, $size);
return PhabricatorFile::newFromFileData(
$image,
array(
'name' => 'preview-'.$file->getName(),
));
}
private function crudelyCropTo(PhabricatorFile $file, $x, $min_y, $max_y) {
$data = $file->loadFileData();
$img = imagecreatefromstring($data);
@ -86,27 +100,56 @@ final class PhabricatorImageTransformer {
$x = imagesx($src);
$y = imagesy($src);
$scale = min($x / $dx, $y / $dy);
$scale = min(($dx / $x), ($dy / $y), 1);
$dst = imagecreatetruecolor($dx, $dy);
imagesavealpha($dst, true);
imagefill($dst, 0, 0, imagecolorallocatealpha($dst, 0, 0, 0, 127));
imagefill($dst, 0, 0, imagecolorallocatealpha($dst, 255, 255, 255, 127));
// If we need to chop off some pixels, chop them off from the sides instead
// of scaling in on <0, 0>.
$sdx = $scale * $dx;
$sdy = $scale * $dy;
$sdx = $scale * $x;
$sdy = $scale * $y;
imagecopyresampled(
$dst,
$src,
($dx - $sdx) / 2, ($dy - $sdy) / 2,
0, 0,
($x - $sdx) / 2, ($y - $sdy) / 2,
$dx, $dy,
$sdx, $sdy);
$sdx, $sdy,
$x, $y);
return $dst;
}
private function generatePreview(PhabricatorFile $file, $size) {
$data = $file->loadFileData();
$src = imagecreatefromstring($data);
$x = imagesx($src);
$y = imagesy($src);
$scale = min($size / $x, $size / $y, 1);
$dx = max($size / 4, $scale * $x);
$dy = max($size / 4, $scale * $y);
$dst = imagecreatetruecolor($dx, $dy);
imagesavealpha($dst, true);
imagefill($dst, 0, 0, imagecolorallocatealpha($dst, 255, 255, 255, 127));
$sdx = $scale * $x;
$sdy = $scale * $y;
imagecopyresampled(
$dst,
$src,
($dx - $sdx) / 2, ($dy - $sdy) / 2,
0, 0,
$sdx, $sdy,
$x, $y);
return $this->saveImageDataInAnyFormat($dst, $file->getMimeType());
}
private function saveImageDataInAnyFormat($data, $preferred_mime = '') {
switch ($preferred_mime) {
case 'image/gif': // GIF doesn't support true color.

View file

@ -55,6 +55,12 @@ final class PhabricatorFileTransformController
$unguarded = AphrontWriteGuard::beginScopedUnguardedWrites();
switch ($this->transform) {
case 'thumb-220x165':
$xformed_file = $this->executeThumbTransform($file, 220, 165);
break;
case 'preview-220':
$xformed_file = $this->executePreviewTransform($file, 220);
break;
case 'thumb-160x120':
$xformed_file = $this->executeThumbTransform($file, 160, 120);
break;
@ -133,6 +139,11 @@ final class PhabricatorFileTransformController
return id(new AphrontRedirectResponse())->setURI($uri);
}
private function executePreviewTransform(PhabricatorFile $file, $size) {
$xformer = new PhabricatorImageTransformer();
return $xformer->executePreviewTransform($file, $size);
}
private function executeThumbTransform(PhabricatorFile $file, $x, $y) {
$xformer = new PhabricatorImageTransformer();
return $xformer->executeThumbTransform($file, $x, $y);

View file

@ -315,6 +315,13 @@ final class PhabricatorFile extends PhabricatorFileDAO {
return '/file/xform/thumb-160x120/'.$this->getPHID().'/';
}
public function getPreview220URI() {
return '/file/xform/preview-220/'.$this->getPHID().'/';
}
public function getThumb220x165URI() {
return '/file/xform/thumb-220x165/'.$this->getPHID().'/';
}
public function isViewableInBrowser() {
return ($this->getViewableMimeType() !== null);

View file

@ -99,8 +99,8 @@ final class PhabricatorMacroListController
$item = new PhabricatorPinboardItemView();
if ($file) {
$item->setImageURI($file->getThumb160x120URI());
$item->setImageSize(160, 120);
$item->setImageURI($file->getThumb220x165URI());
$item->setImageSize(220, 165);
if ($file->getAuthorPHID()) {
$author_handle = $this->getHandle($file->getAuthorPHID());
$item->appendChild(
@ -112,7 +112,6 @@ final class PhabricatorMacroListController
'div',
array(),
'Created on '.$datetime));
}
$item->setURI($this->getApplicationURI('/edit/'.$macro->getID().'/'));
$item->setHeader($macro->getName());

View file

@ -68,9 +68,7 @@ final class PhabricatorRemarkupRuleEmbedFile
return $this->getEngine()->storeText($link);
}
$attrs = array(
'class' => 'phabricator-remarkup-embed-image',
);
$attrs = array();
switch ($options['size']) {
case 'full':
@ -79,9 +77,7 @@ final class PhabricatorRemarkupRuleEmbedFile
break;
case 'thumb':
default:
$attrs['src'] = $file->getThumb160x120URI();
$attrs['width'] = 160;
$attrs['height'] = 120;
$attrs['src'] = $file->getPreview220URI();
$link = $file->getBestURI();
break;
}
@ -92,8 +88,9 @@ final class PhabricatorRemarkupRuleEmbedFile
$embed = phutil_render_tag(
'a',
array(
'href' => $link,
'target' => '_blank',
'href' => $link,
'class' => 'phabricator-remarkup-embed-image',
'target' => '_blank',
),
$embed);
}

View file

@ -219,14 +219,10 @@
margin: .5em 1em 0;
}
img.phabricator-remarkup-embed-image {
display: inline;
border: 2px solid white;
background: white;
box-shadow: 1px 1px 6px rgba(0,0,0,.5);
-moz-box-shadow: 1px 1px 6px rgba(0,0,0,.5);
-webkit-box-shadow: 1px 1px 6px rgba(0,0,0,.5);
.phabricator-remarkup-embed-image {
display: inline-block;
border: 3px solid white;
box-shadow: 1px 1px 2px rgba(0, 0, 0, 0.20);
}
.phabricator-remarkup table.remarkup-table {