그누5 썸네일엔진을 그누4에 적용시킬방법 없을까요??
본문
function thumbnail($filename, $source_path, $target_path, $thumb_width, $thumb_height, $is_create, $is_crop=false, $crop_mode='center', $is_sharpen=true, $um_value='80/0.5/3')
{
global $g5;
if(!$thumb_width && !$thumb_height)
return;
$thumb_filename = preg_replace("/\.[^\.]+$/i", "", $filename); // 확장자제거
$thumb_file = "$target_path/thumb-{$thumb_filename}_{$thumb_width}x{$thumb_height}.jpg";
$source_file = "$source_path/$filename";
if(!is_file($source_file)) // 원본 파일이 없다면
return;
$size = @getimagesize($source_file);
if($size[2] < 1 || $size[2] > 3) // gif, jpg, png 에 대해서만 적용
return;
if (!is_dir($target_path)) {
@mkdir($target_path, G5_DIR_PERMISSION);
@chmod($target_path, G5_DIR_PERMISSION);
}
// Animated GIF는 썸네일 생성하지 않음
if($size[2] == 1) {
if(is_animated_gif($source_file))
return basename($source_file);
}
$thumb_time = @filemtime($thumb_file);
$source_time = @filemtime($source_file);
if (file_exists($thumb_file)) {
if ($is_create == false && $source_time < $thumb_time) {
return basename($thumb_file);
}
}
// 원본파일의 GD 이미지 생성
$src = null;
if ($size[2] == 1) {
$src = imagecreatefromgif($source_file);
} else if ($size[2] == 2) {
$src = imagecreatefromjpeg($source_file);
} else if ($size[2] == 3) {
$src = imagecreatefrompng($source_file);
} else {
return;
}
if(!$src)
return;
$is_large = true;
// width, height 설정
if($thumb_width) {
if(!$thumb_height) {
$thumb_height = round(($thumb_width * $size[1]) / $size[0]);
} else {
if($size[0] < $thumb_width || $size[1] < $thumb_height)
$is_large = false;
}
} else {
if($thumb_height) {
$thumb_width = round(($thumb_height * $size[0]) / $size[1]);
}
}
$dst_x = 0;
$dst_y = 0;
$src_x = 0;
$src_y = 0;
$dst_w = $thumb_width;
$dst_h = $thumb_height;
$src_w = $size[0];
$src_h = $size[1];
$ratio = $dst_h / $dst_w;
if($is_large) {
// 크롭처리
if($is_crop) {
switch($crop_mode)
{
case 'center':
if($size[1] / $size[0] >= $ratio) {
$src_h = round($src_w * $ratio);
$src_y = round(($size[1] - $src_h) / 2);
} else {
$src_w = round($size[1] / $ratio);
$src_x = round(($size[0] - $src_w) / 2);
}
break;
default:
if($size[1] / $size[0] >= $ratio) {
$src_h = round($src_w * $ratio);
} else {
$src_w = round($size[1] / $ratio);
}
break;
}
}
$dst = imagecreatetruecolor($dst_w, $dst_h);
} else {
$dst = imagecreatetruecolor($dst_w, $dst_h);
if($src_w < $dst_w) {
if($src_h >= $dst_h) {
$dst_x = round(($dst_w - $src_w) / 2);
$src_h = $dst_h;
} else {
$dst_x = round(($dst_w - $src_w) / 2);
$dst_y = round(($dst_h - $src_h) / 2);
$dst_w = $src_w;
$dst_h = $src_h;
}
} else {
if($src_h < $dst_h) {
$dst_y = round(($dst_h - $src_h) / 2);
$dst_h = $src_h;
$src_w = $dst_w;
}
}
$bgcolor = imagecolorallocate($dst, 255, 255, 255); // 배경색
imagefill($dst, 0, 0, $bgcolor);
}
imagecopyresampled($dst, $src, $dst_x, $dst_y, $src_x, $src_y, $dst_w, $dst_h, $src_w, $src_h);
// sharpen 적용
if($is_sharpen && $is_large) {
$val = explode('/', $um_value);
UnsharpMask($dst, $val[0], $val[1], $val[2]);
}
imagejpeg($dst, $thumb_file, 90);
chmod($thumb_file, G5_FILE_PERMISSION); // 추후 삭제를 위하여 파일모드 변경
imagedestroy($src);
imagedestroy($dst);
return basename($thumb_file);
}
function UnsharpMask($img, $amount, $radius, $threshold) {
/*
출처 : http://vikjavev.no/computing/ump.php
New:
- In version 2.1 (February 26 2007) Tom Bishop has done some important speed enhancements.
- From version 2 (July 17 2006) the script uses the imageconvolution function in PHP
version >= 5.1, which improves the performance considerably.
Unsharp masking is a traditional darkroom technique that has proven very suitable for
digital imaging. The principle of unsharp masking is to create a blurred copy of the image
and compare it to the underlying original. The difference in colour values
between the two images is greatest for the pixels near sharp edges. When this
difference is subtracted from the original image, the edges will be
accentuated.
The Amount parameter simply says how much of the effect you want. 100 is 'normal'.
Radius is the radius of the blurring circle of the mask. 'Threshold' is the least
difference in colour values that is allowed between the original and the mask. In practice
this means that low-contrast areas of the picture are left unrendered whereas edges
are treated normally. This is good for pictures of e.g. skin or blue skies.
Any suggenstions for improvement of the algorithm, expecially regarding the speed
and the roundoff errors in the Gaussian blur process, are welcome.
*/
////////////////////////////////////////////////////////////////////////////////////////////////
////
//// Unsharp Mask for PHP - version 2.1.1
////
//// Unsharp mask algorithm by Torstein Hønsi 2003-07.
//// thoensi_at_netcom_dot_no.
//// Please leave this notice.
////
///////////////////////////////////////////////////////////////////////////////////////////////
// $img is an image that is already created within php using
// imgcreatetruecolor. No url! $img must be a truecolor image.
// Attempt to calibrate the parameters to Photoshop:
if ($amount > 500) $amount = 500;
$amount = $amount * 0.016;
if ($radius > 50) $radius = 50;
$radius = $radius * 2;
if ($threshold > 255) $threshold = 255;
$radius = abs(round($radius)); // Only integers make sense.
if ($radius == 0) {
return $img; imagedestroy($img); break; }
$w = imagesx($img); $h = imagesy($img);
$imgCanvas = imagecreatetruecolor($w, $h);
$imgBlur = imagecreatetruecolor($w, $h);
// Gaussian blur matrix:
//
// 1 2 1
// 2 4 2
// 1 2 1
//
//////////////////////////////////////////////////
if (function_exists('imageconvolution')) { // PHP >= 5.1
$matrix = array(
array( 1, 2, 1 ),
array( 2, 4, 2 ),
array( 1, 2, 1 )
);
$divisor = array_sum(array_map('array_sum', $matrix));
$offset = 0;
imagecopy ($imgBlur, $img, 0, 0, 0, 0, $w, $h);
imageconvolution($imgBlur, $matrix, $divisor, $offset);
}
else {
// Move copies of the image around one pixel at the time and merge them with weight
// according to the matrix. The same matrix is simply repeated for higher radii.
for ($i = 0; $i < $radius; $i++) {
imagecopy ($imgBlur, $img, 0, 0, 1, 0, $w - 1, $h); // left
imagecopymerge ($imgBlur, $img, 1, 0, 0, 0, $w, $h, 50); // right
imagecopymerge ($imgBlur, $img, 0, 0, 0, 0, $w, $h, 50); // center
imagecopy ($imgCanvas, $imgBlur, 0, 0, 0, 0, $w, $h);
imagecopymerge ($imgBlur, $imgCanvas, 0, 0, 0, 1, $w, $h - 1, 33.33333 ); // up
imagecopymerge ($imgBlur, $imgCanvas, 0, 1, 0, 0, $w, $h, 25); // down
}
}
if($threshold>0){
// Calculate the difference between the blurred pixels and the original
// and set the pixels
for ($x = 0; $x < $w-1; $x++) { // each row
for ($y = 0; $y < $h; $y++) { // each pixel
$rgbOrig = ImageColorAt($img, $x, $y);
$rOrig = (($rgbOrig >> 16) & 0xFF);
$gOrig = (($rgbOrig >> 8) & 0xFF);
$bOrig = ($rgbOrig & 0xFF);
$rgbBlur = ImageColorAt($imgBlur, $x, $y);
$rBlur = (($rgbBlur >> 16) & 0xFF);
$gBlur = (($rgbBlur >> 8) & 0xFF);
$bBlur = ($rgbBlur & 0xFF);
// When the masked pixels differ less from the original
// than the threshold specifies, they are set to their original value.
$rNew = (abs($rOrig - $rBlur) >= $threshold)
? max(0, min(255, ($amount * ($rOrig - $rBlur)) + $rOrig))
: $rOrig;
$gNew = (abs($gOrig - $gBlur) >= $threshold)
? max(0, min(255, ($amount * ($gOrig - $gBlur)) + $gOrig))
: $gOrig;
$bNew = (abs($bOrig - $bBlur) >= $threshold)
? max(0, min(255, ($amount * ($bOrig - $bBlur)) + $bOrig))
: $bOrig;
if (($rOrig != $rNew) || ($gOrig != $gNew) || ($bOrig != $bNew)) {
$pixCol = ImageColorAllocate($img, $rNew, $gNew, $bNew);
ImageSetPixel($img, $x, $y, $pixCol);
}
}
}
}
else{
for ($x = 0; $x < $w; $x++) { // each row
for ($y = 0; $y < $h; $y++) { // each pixel
$rgbOrig = ImageColorAt($img, $x, $y);
$rOrig = (($rgbOrig >> 16) & 0xFF);
$gOrig = (($rgbOrig >> 8) & 0xFF);
$bOrig = ($rgbOrig & 0xFF);
$rgbBlur = ImageColorAt($imgBlur, $x, $y);
$rBlur = (($rgbBlur >> 16) & 0xFF);
$gBlur = (($rgbBlur >> 8) & 0xFF);
$bBlur = ($rgbBlur & 0xFF);
$rNew = ($amount * ($rOrig - $rBlur)) + $rOrig;
if($rNew>255){$rNew=255;}
elseif($rNew<0){$rNew=0;}
$gNew = ($amount * ($gOrig - $gBlur)) + $gOrig;
if($gNew>255){$gNew=255;}
elseif($gNew<0){$gNew=0;}
$bNew = ($amount * ($bOrig - $bBlur)) + $bOrig;
if($bNew>255){$bNew=255;}
elseif($bNew<0){$bNew=0;}
$rgbNew = ($rNew << 16) + ($gNew <<8) + $bNew;
ImageSetPixel($img, $x, $y, $rgbNew);
}
}
}
imagedestroy($imgCanvas);
imagedestroy($imgBlur);
return true;
}
그누5에 기본으로 썸네일엔진이 들어가있는데 사용해보니 너무 좋은것같아서 혹시 그누4에 적용시킬 방법이 없을까해서 질문드립니다.
썸네일만 생성하면되기에 전체는 필요없을듯하고 상단코드만 사용하면 될것같이 보이는데 어떻게 수정해줘야할지 전혀 모르겠네요..ㅠㅠ
도움 부탁드려요~
답변 3
스킨파일 참고하시면 될것 같습니다. 우선 상단에 아래처럼 파일불러오고
include_once(G5_LIB_PATH.'/thumbnail.lib.php');
이렇게 사용하던가
get_view_thumbnail($view['file'][$i]['view']);
이렇게 사용하면 될것 같습니다.
get_list_thumbnail($board['bo_table'], $list[$i]['wr_id'], 가로크기, 세로크기);
앗! 그전에 thumbnail.lib.php 파일을 열어 그누4 변수로 바꿔줘야겠네요
그누4에도 썸네일을 활용한 스킨이 있는걸로 압니다.
그누4에도 썸네일있는건 알고있습니다. 근데 불당썸은 큰이미지 썸네일 생성안되는문제가있고 유창화썸네일은 썸네일을 계속 삭제해줘야하는 문제가있어서요..그래서 그누5썸네일이 가장 정리가 잘 되어있는듯해서 수정가능하면 사용해보고싶은생각이 있네요..^^
많은 도움이 되었습니다. 감사합니다.
답변을 작성하시기 전에 로그인 해주세요.
