function reduce_and_crop($image_width, $image_height, $params)
{
$cropped_image_width = $image_width * ($params['right'] - $params['left']);
$cropped_image_height = $image_height * ($params['bottom'] - $params['top']);
$size = Danbooru::reduce_to(array('width' => $cropped_image_width, 'height' => $cropped_image_height), array('width' => CONFIG::avatar_max_width, 'height' => CONFIG::avatar_max_height), 1, true);
$size['crop_top'] = $image_height * $params['top'];
$size['crop_bottom'] = $image_height * $params['bottom'];
$size['crop_left'] = $image_width * $params['left'];
$size['crop_right'] = $image_width * $params['right'];
return $size;
}
function generate_preview()
{
if (!$this->is_image() && !$this->width && !$this->height) {
return true;
}
$size = Danbooru::reduce_to(array('width' => $this->width, 'height' => $this->height), array('width' => 300, 'height' => 300));
# Generate the preview from the new sample if we have one to save CPU, otherwise from the image.
if (file_exists($this->tempfile_sample_path())) {
list($path, $ext) = array($this->tempfile_sample_path(), "jpg");
} elseif (file_exists($this->sample_path())) {
list($path, $ext) = array($this->sample_path(), "jpg");
} elseif (file_exists($this->tempfile_path)) {
list($path, $ext) = array($this->tempfile_path, $this->file_ext);
} elseif (file_exists($this->file_path())) {
list($path, $ext) = array($this->file_path(), $this->file_ext);
} else {
return false;
}
try {
Danbooru::resize($ext, $path, $this->tempfile_preview_path(), $size, 85);
} catch (Exception $e) {
$this->record_errors->add("preview", "couldn't be generated ({$e->getMessage()})");
return false;
}
$this->actual_preview_width = $this->raw_preview_dimensions('w');
$this->actual_preview_height = $this->raw_preview_dimensions('h');
$this->preview_width = $this->preview_dimensions('w');
$this->preview_height = $this->preview_dimensions('h');
return true;
}
