function send_thumb($image, $compression, $sizex, $sizey, $generateOnly = false)
{
global $bg_color_preview_R, $bg_color_preview_G, $bg_color_preview_B;
set_error_handler("on_error_no_output");
ini_set("gd.jpeg_ignore_warning", 1);
// since php 5.1.3 this leads that corrupt jpgs are read much better!
set_error_handler("on_error");
$srcx = 0;
$srcy = 0;
$dimx = $sizex;
$dimy = $sizey;
$usethumbs = false;
if (file_exists(dirname(__FILE__) . "/thumbs") && is_writable(dirname(__FILE__) . "/thumbs")) {
// is a caching dir available and writeable?
$cachename = dirname(__FILE__) . "/thumbs/" . sha1($image . $sizex) . ".jpg";
$usethumbs = true;
}
if ($usethumbs && file_exists($cachename)) {
// we return the jpg!
header("Content-type: image/jpg");
header("Content-Length: " . filesize($cachename));
header("Pragma: no-cache");
header("Expires: 0");
$fp = fopen($cachename, "rb");
while ($content = fread($fp, 8192)) {
print $content;
}
fclose($fp);
return true;
} else {
if (file_exists($image)) {
$oldsize = getimagesize($image);
// for broken images we try to read the exif data!
if ($oldsize[0] == 0) {
$oldsize = get_exif_size($image, $image);
}
$oldsizex = $oldsize[0];
$oldsizey = $oldsize[1];
if ($oldsizex < $sizex && $oldsizey < $sizey) {
$sizex = $oldsizex;
$sizey = $oldsizey;
}
$height = $sizey;
$width = $height / $oldsizey * $oldsizex;
if ($width > $sizex) {
$width = $sizex;
$height = $width / $oldsizex * $oldsizey;
}
if (isMemoryOk($oldsize, "")) {
$src = get_image_src($image, $oldsize[2]);
if (!$src) {
// error in image!
if ($sizex < 100) {
// we return an empty white one ;).
$src = ImageCreateTrueColor($oldsizex, $oldsizey);
$back = imagecolorallocate($src, 255, 255, 255);
imagefilledrectangle($src, 0, 0, $oldsizex, $oldsizex, $back);
}
debug($image . " is not a valid image - please check the file.");
return false;
}
// $dst = ImageCreateTrueColor($width, $height);
$dst = ImageCreateTrueColor($dimx, $dimy);
if ($dimx < 100) {
// white bg for small preview
$back = imagecolorallocate($dst, $bg_color_preview_R, $bg_color_preview_G, $bg_color_preview_B);
} else {
// gray bg for big preview
$back = imagecolorallocate($dst, 245, 245, 245);
}
imagefilledrectangle($dst, 0, 0, $dimx, $dimy, $back);
if ($dimx > 100) {
// border
imagerectangle($dst, 0, 0, $dimx - 1, $dimy - 1, imagecolorallocate($dst, 160, 160, 160));
}
$offsetx = 0;
$offsetx_b = 0;
if ($dimx > $width) {
// we have to center!
$offsetx = floor(($dimx - $width) / 2);
} else {
if ($dimx > 100) {
$offsetx = 4;
$offsetx_b = 8;
}
}
$offsety = 0;
$offsety_b = 0;
if ($dimy > $height) {
// we have to center!
$offsety = floor(($dimy - $height) / 2);
} else {
if ($dimx > 100) {
$offsety = 4;
$offsety_b = 8;
}
}
$trans = imagecolortransparent($src);
imagecolorset($src, $trans, 255, 255, 255);
imagecolortransparent($src, imagecolorallocate($src, 0, 0, 0));
imagecopyresampled($dst, $src, $offsetx, $offsety, $srcx, $srcy, $width - $offsetx_b, $height - $offsety_b, $oldsizex, $oldsizey);
header("Content-type: image/jpg");
if ($usethumbs) {
// we save the thumb
imagejpeg($dst, $cachename, $compression);
}
if (!$generateOnly) {
header("Pragma: no-cache");
header("Expires: 0");
ob_start();
if (imagejpeg($dst, "", $compression)) {
$buffer = ob_get_contents();
header("Content-Length: " . strlen($buffer));
ob_end_clean();
echo $buffer;
@imagedestroy($dst);
return true;
} else {
ob_end_flush();
debug('cannot save: ' . $image);
@imagedestroy($src);
}
}
}
}
}
return false;
}
/**
* resizes a file and writes it back to the user! - can do jpg, png and gif if the support is there !
* renamed png's (that that are actually jpg's are handled as well!)
* Needs gdlib > 2.0!
*/
function send_thumb($image, $compression, $sizex, $sizey, $generateOnly = false)
{
global $bg_color_preview_R, $bg_color_preview_G, $bg_color_preview_B;
global $info_text, $info_textcolor_R, $info_textcolor_G, $info_textcolor_B, $info_font, $info_fontsize;
set_error_handler('on_error_no_output');
ini_set('gd.jpeg_ignore_warning', 1);
// since php 5.1.3 this leads that corrupt jpgs are read much better!
set_error_handler('on_error');
$srcx = 0;
$srcy = 0;
$dimx = $sizex;
$dimy = $sizey;
$usethumbs = false;
if (file_exists(dirname(__FILE__) . '/thumbs') && is_writable(dirname(__FILE__) . '/thumbs')) {
// is a caching dir available and writeable?
$cachename = dirname(__FILE__) . '/thumbs/' . sha1($image . $sizex) . '.jpg';
$usethumbs = true;
}
if ($usethumbs && file_exists($cachename)) {
// we return the jpg!
header('Content-type: image/jpg');
header('Content-Length: ' . filesize($cachename));
$fp = fopen($cachename, 'rb');
while ($content = fread($fp, 8192)) {
print $content;
}
fclose($fp);
return true;
} else {
if (file_exists($image)) {
if (filesize($image) == 0) {
return false;
}
$oldsize = getimagesize($image);
// for broken images we try to read the exif data!
if ($oldsize[0] == 0) {
$oldsize = get_exif_size($image, $image);
}
$oldsizex = $oldsize[0];
$oldsizey = $oldsize[1];
if ($oldsizex < $sizex && $oldsizey < $sizey) {
$sizex = $oldsizex;
$sizey = $oldsizey;
}
$height = $sizey;
$width = $height / $oldsizey * $oldsizex;
if ($width > $sizex) {
$width = $sizex;
$height = $width / $oldsizex * $oldsizey;
}
if (isMemoryOk($oldsize, $sizex, '')) {
$src = get_image_src($image, $oldsize[2]);
if (!$src) {
// error in image!
if ($sizex < 100) {
// we return an empty white one ;).
$src = ImageCreateTrueColor($oldsizex, $oldsizey);
$back = imagecolorallocate($src, 255, 255, 255);
imagefilledrectangle($src, 0, 0, $oldsizex, $oldsizex, $back);
}
tfu_debug($image . ' is not a valid image - please check the file.');
return false;
}
// $dst = ImageCreateTrueColor($width, $height);
$dst = ImageCreateTrueColor($dimx, $dimy);
if ($dimx < 100) {
// white bg for small preview
$back = imagecolorallocate($dst, $bg_color_preview_R, $bg_color_preview_G, $bg_color_preview_B);
} else {
// gray bg for big preview
$back = imagecolorallocate($dst, 245, 245, 245);
}
imagefilledrectangle($dst, 0, 0, $dimx, $dimy, $back);
if ($dimx > 100) {
// border
imagerectangle($dst, 0, 0, $dimx - 1, $dimy - 1, imagecolorallocate($dst, 160, 160, 160));
}
$offsetx = 0;
$offsetx_b = 0;
if ($dimx > $width) {
// we have to center!
$offsetx = floor(($dimx - $width) / 2);
} else {
if ($dimx > 100) {
$offsetx = 4;
$offsetx_b = 8;
}
}
$offsety = 0;
$offsety_b = 0;
if ($dimy > $height) {
// we have to center!
$offsety = floor(($dimy - $height) / 2);
} else {
if ($dimx > 100) {
$offsety = 4;
$offsety_b = 8;
}
}
$trans = imagecolortransparent($src);
imagecolorset($src, $trans, 255, 255, 255);
imagecolortransparent($src, imagecolorallocate($src, 0, 0, 0));
imagecopyresampled($dst, $src, $offsetx, $offsety, $srcx, $srcy, $width - $offsetx_b, $height - $offsety_b, $oldsizex, $oldsizey);
if (function_exists("imagettftext") && $dimx > 100 && $info_text != '') {
// some extra info at the bottom of the image. Available parameters: {date} {size} {dimension}
$text = str_replace('{dimension}', $oldsizex . "x" . $oldsizey, $info_text);
$text = str_replace('{size}', formatSize(filesize($image)), $text);
$text = str_replace('{date}', date("d.m.Y", filemtime($image)), $text);
$color = imagecolorclosest($dst, $info_textcolor_R, $info_textcolor_G, $info_textcolor_B);
imagettftext($dst, $info_fontsize, 0, 8, $dimy - 8, $color, $info_font, $text);
}
header('Content-type: image/jpg');
if ($usethumbs) {
// we save the thumb
imagejpeg($dst, $cachename, $compression);
}
if (!$generateOnly) {
ob_start();
if (imagejpeg($dst, '', $compression)) {
$buffer = ob_get_contents();
header('Content-Length: ' . strlen($buffer));
ob_end_clean();
echo $buffer;
@imagedestroy($dst);
return true;
} else {
ob_end_flush();
tfu_debug('cannot save: ' . $image);
@imagedestroy($src);
}
}
}
}
}
return false;
}