sibtracker/system/classes/thumb.class.php
2019-05-18 13:46:03 +08:00

258 lines
7.6 KiB
PHP

<?php
if( ! defined( 'DATALIFEENGINE' ) ) {die( "Hacking attempt!" );}
class thumbnail {
var $img;
var $watermark_image_light;
var $watermark_image_dark;
function thumbnail($imgfile) {
//detect image format
$info = @getimagesize($imgfile);
if( $info[2] == 2 ) {
$this->img['format'] = "JPEG";
$this->img['src'] = @imagecreatefromjpeg( $imgfile );
} elseif( $info[2] == 3 ) {
$this->img['format'] = "PNG";
$this->img['src'] = @imagecreatefrompng( $imgfile );
} elseif( $info[2] == 1 ) {
$this->img['format'] = "GIF";
$this->img['src'] = @imagecreatefromgif( $imgfile );
} else {
echo "Not Supported File! Thumbnails can only be made from .jpg, gif and .png images!";
@unlink( $imgfile );
exit();
}
if( !$this->img['src'] ) {
echo "Not Supported File! Thumbnails can only be made from .jpg, gif and .png images!";
@unlink( $imgfile );
exit();
}
$this->img['lebar'] = @imagesx( $this->img['src'] );
$this->img['tinggi'] = @imagesy( $this->img['src'] );
$this->img['lebar_thumb'] = $this->img['lebar'];
$this->img['tinggi_thumb'] = $this->img['tinggi'];
//default quality jpeg
$this->img['quality'] = 90;
}
function size_auto($size = 100, $site = 0) {
$size = explode ("x", $size);
if ( count($size) == 2 ) {
$size[0] = intval($size[0]);
$size[1] = intval($size[1]);
return $this->crop( intval($size[0]), intval($size[1]) );
} else {
$size[0] = intval($size[0]);
return $this->scale( intval($size[0]), $site);
}
}
function crop($nw, $nh) {
$w = $this->img['lebar'];
$h = $this->img['tinggi'];
if( $w <= $nw AND $h <= $nh ) {
$this->img['lebar_thumb'] = $w;
$this->img['tinggi_thumb'] = $h;
return 0;
}
$nw = min($nw, $w);
$nh = min($nh, $h);
$size_ratio = max($nw / $w, $nh / $h);
$src_w = ceil($nw / $size_ratio);
$src_h = ceil($nh / $size_ratio);
$sx = floor(($w - $src_w)/2);
$sy = floor(($h - $src_h)/2);
$this->img['des'] = imagecreatetruecolor($nw, $nh);
if ( $this->img['format'] == "PNG" ) {
imagealphablending( $this->img['des'], false);
imagesavealpha( $this->img['des'], true);
}
imagecopyresampled($this->img['des'],$this->img['src'],0,0,$sx,$sy,$nw,$nh,$src_w,$src_h);
$this->img['src'] = $this->img['des'];
return 1;
}
function scale($size = 100, $site = 0) {
$site = intval( $site );
if( $this->img['lebar'] <= $size and $this->img['tinggi'] <= $size ) {
$this->img['lebar_thumb'] = $this->img['lebar'];
$this->img['tinggi_thumb'] = $this->img['tinggi'];
return 0;
}
switch ($site) {
case "1" :
if( $this->img['lebar'] <= $size ) {
$this->img['lebar_thumb'] = $this->img['lebar'];
$this->img['tinggi_thumb'] = $this->img['tinggi'];
return 0;
} else {
$this->img['lebar_thumb'] = $size;
$this->img['tinggi_thumb'] = ($this->img['lebar_thumb'] / $this->img['lebar']) * $this->img['tinggi'];
}
break;
case "2" :
if( $this->img['tinggi'] <= $size ) {
$this->img['lebar_thumb'] = $this->img['lebar'];
$this->img['tinggi_thumb'] = $this->img['tinggi'];
return 0;
} else {
$this->img['tinggi_thumb'] = $size;
$this->img['lebar_thumb'] = ($this->img['tinggi_thumb'] / $this->img['tinggi']) * $this->img['lebar'];
}
break;
default :
if( $this->img['lebar'] >= $this->img['tinggi'] ) {
$this->img['lebar_thumb'] = $size;
$this->img['tinggi_thumb'] = ($this->img['lebar_thumb'] / $this->img['lebar']) * $this->img['tinggi'];
} else {
$this->img['tinggi_thumb'] = $size;
$this->img['lebar_thumb'] = ($this->img['tinggi_thumb'] / $this->img['tinggi']) * $this->img['lebar'];
}
break;
}
if ($this->img['lebar_thumb'] < 1 ) $this->img['lebar_thumb'] = 1;
if ($this->img['tinggi_thumb'] < 1 ) $this->img['tinggi_thumb'] = 1;
$this->img['des'] = imagecreatetruecolor( $this->img['lebar_thumb'], $this->img['tinggi_thumb'] );
if ( $this->img['format'] == "PNG" ) {
imagealphablending( $this->img['des'], false);
imagesavealpha( $this->img['des'], true);
}
@imagecopyresampled( $this->img['des'], $this->img['src'], 0, 0, 0, 0, $this->img['lebar_thumb'], $this->img['tinggi_thumb'], $this->img['lebar'], $this->img['tinggi'] );
$this->img['src'] = $this->img['des'];
return 1;
}
function jpeg_quality($quality = 90) {
//jpeg quality
$this->img['quality'] = $quality;
}
function save($save = "") {
if( $this->img['format'] == "JPG" || $this->img['format'] == "JPEG" ) {
//JPEG
imagejpeg( $this->img['src'], $save, $this->img['quality'] );
} elseif( $this->img['format'] == "PNG" ) {
//PNG
imagealphablending( $this->img['src'], false);
imagesavealpha( $this->img['src'], true);
imagepng( $this->img['src'], $save );
} elseif( $this->img['format'] == "GIF" ) {
//GIF
imagegif( $this->img['src'], $save );
}
imagedestroy( $this->img['src'] );
}
function show() {
if( $this->img['format'] == "JPG" || $this->img['format'] == "JPEG" ) {
//JPEG
imageJPEG( $this->img['src'], "", $this->img['quality'] );
} elseif( $this->img['format'] == "PNG" ) {
//PNG
imagePNG( $this->img['src'] );
} elseif( $this->img['format'] == "GIF" ) {
//GIF
imageGIF( $this->img['src'] );
}
imagedestroy( $this->img['src'] );
}
// *************************************************************************
function insert_watermark($min_image) {
global $config;
$margin = 7;
$this->watermark_image_light = ROOT_DIR . '/templates/' . $config['skin'] . '/images/watermark.png';
$this->watermark_image_dark = ROOT_DIR . '/templates/' . $config['skin'] . '/images/watermark.png';
$image_width = imagesx( $this->img['src'] );
$image_height = imagesy( $this->img['src'] );
list ( $watermark_width, $watermark_height ) = getimagesize( $this->watermark_image_light );
$watermark_x = $image_width - $margin - $watermark_width + $margin;
//$watermark_y = $image_height - $margin - $watermark_height;
$watermark_y = $image_height - $watermark_height;
$watermark_x2 = $watermark_x + $watermark_width;
$watermark_y2 = $watermark_y + $watermark_height;
if( $watermark_x < 0 or $watermark_y < 0 or $watermark_x2 > $image_width or $watermark_y2 > $image_height or $image_width < $min_image or $image_height < $min_image ) {
return;
}
$test = imagecreatetruecolor( 1, 1 );
imagecopyresampled( $test, $this->img['src'], 0, 0, $watermark_x, $watermark_y, 1, 1, $watermark_width, $watermark_height );
$rgb = imagecolorat( $test, 0, 0 );
$r = ($rgb >> 16) & 0xFF;
$g = ($rgb >> 8) & 0xFF;
$b = $rgb & 0xFF;
$max = min( $r, $g, $b );
$min = max( $r, $g, $b );
$lightness = ( double ) (($max + $min) / 510.0);
imagedestroy( $test );
$watermark_image = ($lightness < 0.5) ? $this->watermark_image_light : $this->watermark_image_dark;
$watermark = imagecreatefrompng( $watermark_image );
imagealphablending( $this->img['src'], TRUE );
imagealphablending( $watermark, TRUE );
if( $this->img['format'] == "PNG" ) {
$png8fix = imagecreatetruecolor( $image_width, $image_height );
imagecopy( $png8fix, $this->img['src'], 0, 0, 0, 0, $image_width, $image_height );
imagecopy( $png8fix, $watermark, $watermark_x, $watermark_y, 0, 0, $watermark_width, $watermark_height );
imagecopy( $this->img['src'], $png8fix, 0, 0, 0, 0, $image_width, $image_height );
imagedestroy( $png8fix );
}else imagecopy( $this->img['src'], $watermark, $watermark_x, $watermark_y, 0, 0, $watermark_width, $watermark_height );
imagedestroy( $watermark );
}
}
?>