/**
* Returns the requested EXIF/IPTC tag from the current image
*
* If $tags is an array all given tags are tried until a
* value is found. If no value is found $alt is returned.
*
* Which texts are known is defined in the functions _exifTagNames
* and _iptcTagNames() in inc/jpeg.php (You need to prepend IPTC
* to the names of the latter one)
*
* Only allowed in: detail.php
*
* @author Andreas Gohr <*****@*****.**>
* @param array $tags tags to try
* @param string $alt alternative output if no data was found
* @param null $src the image src, uses global $SRC if not given
* @return string
*/
function tpl_img_getTag($tags, $alt = '', $src = null)
{
// Init Exif Reader
global $SRC;
if (is_null($src)) {
$src = $SRC;
}
static $meta = null;
if (is_null($meta)) {
$meta = new JpegMeta($src);
}
if ($meta === false) {
return $alt;
}
$info = $meta->getField($tags);
if ($info == false) {
return $alt;
}
return $info;
}
/**
* resize or crop images using PHP's libGD support
*
* @author Andreas Gohr <*****@*****.**>
* @author Sebastian Wienecke <*****@*****.**>
*/
function media_resize_imageGD($ext, $from, $from_w, $from_h, $to, $to_w, $to_h, $ofs_x = 0, $ofs_y = 0)
{
global $conf;
if ($conf['gdlib'] < 1) {
return false;
}
//no GDlib available or wanted
// check available memory
if (!is_mem_available($from_w * $from_h * 4 + $to_w * $to_h * 4)) {
return false;
}
// create an image of the given filetype
if ($ext == 'jpg' || $ext == 'jpeg') {
if (!function_exists("imagecreatefromjpeg")) {
return false;
}
$image = @imagecreatefromjpeg($from);
// rotate the image according to exif orientation tag
if ($image) {
$meta = new JpegMeta($from);
$orientation = $meta->getField("Orientation");
switch ($orientation) {
case 3:
// rotate 180 degrees clockwise
if ($conf['syslog']) {
syslog(LOG_WARNING, '[media.php] media_resize_imageGD:orientation: ' . $orientation . ' rotate 180 degrees clockwise');
}
$image = imagerotate($image, 180, 0);
break;
case 6:
// only rotate to vertical if width is larger than height
if (intval($from_w) > intval($from_h)) {
// rotage image 90 degrees clockwise
if ($conf['syslog']) {
syslog(LOG_WARNING, '[media.php] media_resize_imageGD:orientation: ' . $orientation . ' rotate 90 degrees clockwise');
}
$image = imagerotate($image, -90, 0);
if ($conf['syslog']) {
syslog(LOG_WARNING, '[media.php] media_resize_imageGD: swap width and height as we have just rotated the image vertically');
}
$from_w_old = $from_w;
$to_w_old = $to_w;
$from_w = $from_h;
$to_w = $to_h;
$from_h = $from_w_old;
$to_h = $to_w_old;
}
break;
case 8:
// only rotate to vertical if width is larger than height
if (intval($from_w) > intval($from_h)) {
if ($conf['syslog']) {
syslog(LOG_WARNING, '[media.php] media_resize_imageGD:orientation: ' . $orientation . ' rotate 90 degrees anti-clockwise');
}
// rotage image 90 degrees anti-clockwise
$image = imagerotate($image, 90, 0);
if ($conf['syslog']) {
syslog(LOG_WARNING, '[media.php] media_resize_imageGD: swap width and height as we have just rotated the image vertically');
}
$from_w_old = $from_w;
$to_w_old = $to_w;
$from_w = $from_h;
$to_w = $to_h;
$from_h = $from_w_old;
$to_h = $to_w_old;
}
break;
}
}
} elseif ($ext == 'png') {
if (!function_exists("imagecreatefrompng")) {
return false;
}
$image = @imagecreatefrompng($from);
} elseif ($ext == 'gif') {
if (!function_exists("imagecreatefromgif")) {
return false;
}
$image = @imagecreatefromgif($from);
}
if (!$image) {
return false;
}
if ($conf['gdlib'] > 1 && function_exists("imagecreatetruecolor") && $ext != 'gif') {
$newimg = @imagecreatetruecolor($to_w, $to_h);
}
if (!$newimg) {
$newimg = @imagecreate($to_w, $to_h);
}
if (!$newimg) {
imagedestroy($image);
return false;
}
//keep png alpha channel if possible
if ($ext == 'png' && $conf['gdlib'] > 1 && function_exists('imagesavealpha')) {
imagealphablending($newimg, false);
imagesavealpha($newimg, true);
}
//keep gif transparent color if possible
if ($ext == 'gif' && function_exists('imagefill') && function_exists('imagecolorallocate')) {
if (function_exists('imagecolorsforindex') && function_exists('imagecolortransparent')) {
$transcolorindex = @imagecolortransparent($image);
if ($transcolorindex >= 0) {
//transparent color exists
$transcolor = @imagecolorsforindex($image, $transcolorindex);
$transcolorindex = @imagecolorallocate($newimg, $transcolor['red'], $transcolor['green'], $transcolor['blue']);
@imagefill($newimg, 0, 0, $transcolorindex);
@imagecolortransparent($newimg, $transcolorindex);
} else {
//filling with white
$whitecolorindex = @imagecolorallocate($newimg, 255, 255, 255);
@imagefill($newimg, 0, 0, $whitecolorindex);
}
} else {
//filling with white
$whitecolorindex = @imagecolorallocate($newimg, 255, 255, 255);
@imagefill($newimg, 0, 0, $whitecolorindex);
}
}
//try resampling first
if (function_exists("imagecopyresampled")) {
if (!@imagecopyresampled($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h)) {
imagecopyresized($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h);
}
} else {
imagecopyresized($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h);
}
$okay = false;
if ($ext == 'jpg' || $ext == 'jpeg') {
if (!function_exists('imagejpeg')) {
$okay = false;
} else {
$okay = imagejpeg($newimg, $to, $conf['jpg_quality']);
}
} elseif ($ext == 'png') {
if (!function_exists('imagepng')) {
$okay = false;
} else {
// add compress png image if png_qulaity is set
if ($conf['png_quality']) {
$okay = imagepng($newimg, $to, $conf['png_quality']);
} else {
$okay = imagepng($newimg, $to);
}
}
} elseif ($ext == 'gif') {
if (!function_exists('imagegif')) {
$okay = false;
} else {
$okay = imagegif($newimg, $to);
}
}
// destroy GD image ressources
if ($image) {
imagedestroy($image);
}
if ($newimg) {
imagedestroy($newimg);
}
return $okay;
}
/**
* Returns the requested EXIF/IPTC tag from the image meta
*
* @author Kate Arzamastseva <*****@*****.**>
* @param array $tags
* @param JpegMeta $meta
* @param string $alt
* @return string
*/
function media_getTag($tags, $meta, $alt = '')
{
if ($meta === false) {
return $alt;
}
$info = $meta->getField($tags);
if ($info == false) {
return $alt;
}
return $info;
}
/**
* Defines how a thumbnail should look like
*/
function _image($data, &$renderer = null, $mode = 'xhtml')
{
global $ID;
if (is_null($renderer) || empty($data['src'])) {
return false;
}
if (!is_array($data['params'])) {
$data['params'] = array();
}
//prepare link attributes
// can use reflected images
$reflect = array();
if ($reflection = plugin_load('syntax', 'reflect')) {
$reflect = array('reflect' => $this->getConf('reflect') ? 1 : 0, 'bgc' => $this->getConf('reflectBackground'));
}
// Start Section
if ($mode != 'metadata') {
$renderer->doc .= '<div class="imageflow_image">' . NL;
}
// Display
$data['params']['tok'] = media_get_token($data['src'], $data['params']['w'], $data['params']['h']);
$href = ml($data['src'], array_merge($data['params'], $reflect), true, '&');
if ($mode != 'metadata' && empty($data['alternate_desc'])) {
$renderer->doc .= '<img src="' . $href . '" alt="" class="imageflow__noscript__image media"/>';
}
// Set Data
$fn = mediaFN($data['src']);
$data['src'] = ml($data['src']);
$data['params'] = array_merge($data['params'], $reflect);
// Remove everything except the params.
$data['desc'] = trim($data['desc']);
$data['title'] = trim($data['title']);
if (empty($data['desc']) && ($meta = new JpegMeta($fn))) {
$data['title'] = $meta->getField('Iptc.Headline');
$data['desc'] = $meta->getField('Iptc.Caption');
}
if ($mode != 'metadata') {
if (!empty($data['alternate_desc'])) {
$renderer->doc .= $data['alternate_desc'];
} else {
$renderer->doc .= '<div class="imageflow_caption">' . NL;
if (!empty($data['title'])) {
$renderer->doc .= "<h3 class=\"imageflow__title\">{$data['title']}</h3>" . NL;
}
if (!empty($data['desc'])) {
$renderer->doc .= "<p class=\"imageflow__text\">{$data['desc']}</p>" . NL;
}
// End Caption
$renderer->doc .= '</div>' . NL;
}
// End Section
$renderer->doc .= '<div class="clearer"></div>' . NL . '</div>' . NL;
} else {
// Add Metadata
unset($data['alternate_desc']);
if (!$data['isImage'] && !empty($data['linkto'])) {
$data['id'] = $data['linkto'];
unset($data['linkto']);
}
$renderer->meta['relation']['imageflow'][$this->sectionID[sizeof($this->sectionID) - 1]][] = $data;
}
return $data;
}
