php圖片處理類

代碼

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/*
圖片處理函數功能：縮放、剪切、相框、水印、銳化、旋轉、翻轉、透明度、反色
處理並保存歷史記錄的思路：當有圖片有改動時自動生成一張新圖片，命名方式能夠考慮在原圖片的基礎上加上步驟，例如：圖片名稱+__第幾步
*/
class picture{
var $PICTURE_URL;//要處理的圖片
var $DEST_URL="temp__01.jpg";//生成目標圖片位置
var $PICTURE_CREATE;//要建立的圖片
var $TURE_COLOR;//新建一個真彩圖象

var $PICTURE_WIDTH;//原圖片寬度
var $PICTURE_HEIGHT;//原圖片高度

/*
水印的類型，默認的爲水印文字
*/
var $MARK_TYPE=1;
var $WORD;//通過UTF-8後的文字
var $WORD_X;//文字橫座標
var $WORD_Y;//文字縱座標
var $FONT_TYPE;//字體類型
var $FONT_SIZE="12";//字體大小
var $FONT_WORD;//文字
var $ANGLE=0;//文字的角度，默認爲0
var $FONT_COLOR="#000000";//文字顏色
var $FONT_PATH="font/simkai.ttf";//字體庫，默認爲宋體
var $FORCE_URL;//水印圖片
var $FORCE_X=0;//水印橫座標
var $FORCE_Y=0;//水印縱座標
var $FORCE_START_X=0;//切起水印的圖片橫座標
var $FORCE_START_Y=0;//切起水印的圖片縱座標

var $PICTURE_TYPE;//圖片類型
var $PICTURE_MIME;//輸出的頭部

/*
縮放比例爲1的話就按縮放高度和寬度縮放
*/
var $ZOOM=1;//縮放類型
var $ZOOM_MULTIPLE;//縮放比例
var $ZOOM_WIDTH;//縮放寬度
var $ZOOM_HEIGHT;//縮放高度

/*
裁切，按比例和固定長度、寬度
*/
var $CUT_TYPE=1;//裁切類型
var $CUT_X=0;//裁切的橫座標
var $CUT_Y=0;//裁切的縱座標
var $CUT_;//裁切的寬度
var $CUT_HEIGHT=100;//裁切的高度

/*
銳化
*/
var $SHARP="7.0";//銳化程度

/*
透明度處理
*/
var $ALPHA='100';//透明度在0-127之間
var $ALPHA_X="90";
var $ALPHA_Y="50";

/*
任意角度旋轉
*/
var $CIRCUMROTATE="90.0";//注意，必須爲浮點數

/*
出錯信息
*/
var $ERROR=array(
'unalviable'=>'沒有找到相關圖片!'
);

/*
構造函數：函數初始化
*/
function __construct($PICTURE_URL){

$this->get_info($PICTURE_URL);

}
function get_info($PICTURE_URL){
/*
處理原圖片的信息,先檢測圖片是否存在,不存在則給出相應的信息
*/
@$SIZE=getimagesize($PICTURE_URL);
if(!$SIZE){
exit($this->ERROR['unalviable']);
}

//獲得原圖片的信息類型、寬度、高度
$this->PICTURE_MIME=$SIZE['mime'];
$this->PICTURE_;
$this->PICTURE_HEIGHT=$SIZE[1];

//建立圖片
switch($SIZE[2]){
case 1:
$this->PICTURE_CREATE=imagecreatefromgif($PICTURE_URL);
$this->PICTURE_TYPE="imagejpeg";
$this->PICTURE_EXT="jpg";
break;
case 2:
$this->PICTURE_CREATE=imagecreatefromjpeg($PICTURE_URL);
$this->PICTURE_TYPE="imagegif";
$this->PICTURE_EXT="gif";
break;
case 3:
$this->PICTURE_CREATE=imagecreatefrompng($PICTURE_URL);
$this->PICTURE_TYPE="imagepng";
$this->PICTURE_EXT="png";
break;
}

/*
文字顏色轉換16進制轉換成10進制
*/
preg_match_all("/([0-f]){2,2}/i",$this->FONT_COLOR,$MATCHES);
if(count($MATCHES)==3){
$this->RED=hexdec($MATCHES[0][0]);
$this->GREEN=hexdec($MATCHES[0][1]);
$this->BLUE=hexdec($MATCHES[0][2]);
}
}

#end of __construct

/*
將16進制的顏色轉換成10進制的（R，G，B）
*/
function hex2dec(){
preg_match_all("/([0-f]){2,2}/i",$this->FONT_COLOR,$MATCHES);
if(count($MATCHES)==3){
$this->RED=hexdec($MATCHES[0][0]);
$this->GREEN=hexdec($MATCHES[0][1]);
$this->BLUE=hexdec($MATCHES[0][2]);
}
}

//縮放類型
function zoom_type($ZOOM_TYPE){
$this->ZOOM=$ZOOM_TYPE;
}

//對圖片進行縮放,若是不指定高度和寬度就進行縮放
function zoom(){
//縮放的大小
if($this->ZOOM==0){
$this->ZOOM_;gt;PICTURE_WIDTH * $this->ZOOM_MULTIPLE;
$this->ZOOM_HEIGHT=$this->PICTURE_HEIGHT * $this->ZOOM_MULTIPLE;
}
//新建一個真彩圖象
$this->TRUE_COLOR=imagecreatetruecolor($this->ZOOM_WIDTH,$this->ZOOM_HEIGHT);
$WHITE=imagecolorallocate($this->TRUE_COLOR,255,255,255);
imagefilledrectangle($this->TRUE_COLOR,0,0,$this->ZOOM_WIDTH,$this->ZOOM_HEIGHT,$WHITE);
imagecopyresized($this->TRUE_COLOR,$this->PICTURE_CREATE,0,0,0,0,$this->ZOOM_WIDTH,$this->ZOOM_HEIGHT,$this->PICTURE_WIDTH,$this->PICTURE_HEIGHT);
}

#end of zoom
//裁切圖片,按座標或自動
function cut(){
$this->TRUE_COLOR=imagecreatetruecolor($this->CUT_WIDTH,$this->CUT_WIDTH);
imagecopy($this->TRUE_COLOR,$this->PICTURE_CREATE, 0, 0, $this->CUT_X, $this->CUT_Y,$this->CUT_WIDTH,$this->CUT_HEIGHT);
}

#end of cut
/*
在圖片上放文字或圖片
水印文字
*/
function _mark_text(){
$this->TRUE_COLOR=imagecreatetruecolor($this->PICTURE_WIDTH,$this->PICTURE_HEIGHT);
$this->WORD=mb_convert_encoding($this->FONT_WORD,'utf-8','gb2312');
/*
取得使用 TrueType 字體的文本的範圍
*/
$TEMP = imagettfbbox($this->FONT_SIZE,0,$this->FONT_PATH,$this->WORD);
$WORD_LENGTH=strlen($this->WORD);
$WORD_WIDTH =$TEMP[2] - $TEMP[6];
$WORD_HEIGHT =$TEMP[3] - $TEMP[7];
/*
文字水印的默認位置爲右下角
*/
if($this->WORD_X==""){
$this->WORD_X=$this->PICTURE_WIDTH-$WORD_WIDTH;
}
if($this->WORD_Y==""){
$this->WORD_Y=$this->PICTURE_HEIGHT-$WORD_HEIGHT;
}
imagesettile($this->TRUE_COLOR,$this->PICTURE_CREATE);
imagefilledrectangle($this->TRUE_COLOR,0,0,$this->PICTURE_WIDTH,$this->PICTURE_HEIGHT,IMG_COLOR_TILED);
$TEXT2=imagecolorallocate($this->TRUE_COLOR,$this->RED,$this->GREEN,$this->Blue);
imagettftext($this->TRUE_COLOR,$this->FONT_SIZE,$this->ANGLE,$this->WORD_X,$this->WORD_Y,$TEXT2,$this->FONT_PATH,$this->WORD);
}

/*
水印圖片
*/
function _mark_picture(){

/*
獲取水印圖片的信息
*/
@$SIZE=getimagesize($this->FORCE_URL);
if(!$SIZE){
exit($this->ERROR['unalviable']);
}
$FORCE_PICTURE_;
$FORCE_PICTURE_HEIGHT=$SIZE[1];
//建立水印圖片
switch($SIZE[2]){
case 1:
$FORCE_PICTURE_CREATE=imagecreatefromgif($this->FORCE_URL);
$FORCE_PICTURE_TYPE="gif";
break;
case 2:
$FORCE_PICTURE_CREATE=imagecreatefromjpeg($this->FORCE_URL);
$FORCE_PICTURE_TYPE="jpg";
break;
case 3:
$FORCE_PICTURE_CREATE=imagecreatefrompng($this->FORCE_URL);
$FORCE_PICTURE_TYPE="png";
break;
}
/*
判斷水印圖片的大小，並生成目標圖片的大小，若是水印比圖片大，則生成圖片大小爲水印圖片的大小。不然生成的圖片大小爲原圖片大小。
*/
$this->NEW_PICTURE=$this->PICTURE_CREATE;
if($FORCE_PICTURE_WIDTH>$this->PICTURE_WIDTH){
$CREATE_;gt;FORCE_START_X;
}else{
$CREATE_;gt;PICTURE_WIDTH;
}
if($FORCE_PICTURE_HEIGHT>$this->PICTURE_HEIGHT){
$CREATE_HEIGHT=$FORCE_PICTURE_HEIGHT-$this->FORCE_START_Y;
}else{
$CREATE_HEIGHT=$this->PICTURE_HEIGHT;
}
/*
建立一個畫布
*/
$NEW_PICTURE_CREATE=imagecreatetruecolor($CREATE_WIDTH,$CREATE_HEIGHT);
$WHITE=imagecolorallocate($NEW_PICTURE_CREATE,255,255,255);
/*
將背景圖拷貝到畫布中
*/
imagecopy($NEW_PICTURE_CREATE, $this->PICTURE_CREATE, 0, 0, 0, 0,$this->PICTURE_WIDTH,$this->PICTURE_HEIGHT);

/*
將目標圖片拷貝到背景圖片上
*/
imagecopy($NEW_PICTURE_CREATE, $FORCE_PICTURE_CREATE, $this->FORCE_X, $this->FORCE_Y, $this->FORCE_START_X, $this->FORCE_START_Y,$FORCE_PICTURE_WIDTH,$FORCE_PICTURE_HEIGHT);
$this->TRUE_COLOR=$NEW_PICTURE_CREATE;
}
#end of mark

function alpha_(){
$this->TRUE_COLOR=imagecreatetruecolor($this->PICTURE_WIDTH,$this->PICTURE_HEIGHT);
$rgb="#CDCDCD";
$tran_color="#000000";
for($j=0;$j<=$this->PICTURE_HEIGHT-1;$j++){
for ($i=0;$i<=$this->PICTURE_WIDTH-1;$i++)
{
$rgb = imagecolorat($this->PICTURE_CREATE,$i,$j);
$r = ($rgb >> 16) & 0xFF;
$g = ($rgb >> 8) & 0xFF;
$b = $rgb & 0xFF;
$now_color=imagecolorallocate($this->PICTURE_CREATE,$r,$g,$b);
if ($now_color==$tran_color)
{
continue;
}
else
{
$color=imagecolorallocatealpha($this->PICTURE_CREATE,$r,$g,$b,$ALPHA);
imagesetpixel($this->PICTURE_CREATE,$ALPHA_X+$i,$ALPHA_Y+$j,$color);
}
$this->TRUE_COLOR=$this->PICTURE_CREATE;

}
}
}

/*
圖片旋轉:
沿y軸旋轉
*/
function turn_y(){
$this->TRUE_COLOR=imagecreatetruecolor($this->PICTURE_WIDTH,$this->PICTURE_HEIGHT);
for ($x = 0; $x < $this->PICTURE_WIDTH; $x++)
{
imagecopy($this->TRUE_COLOR, $this->PICTURE_CREATE, $this->PICTURE_WIDTH - $x - 1, 0, $x, 0, 1, $this->PICTURE_HEIGHT);
}
}
/*
沿X軸旋轉
*/
function turn_x(){
$this->TRUE_COLOR=imagecreatetruecolor($this->PICTURE_WIDTH,$this->PICTURE_HEIGHT);
for ($y = 0; $y < $this->PICTURE_HEIGHT; $y++)
{
imagecopy($this->TRUE_COLOR, $this->PICTURE_CREATE, 0, $this->PICTURE_HEIGHT - $y - 1, 0, $y, $this->PICTURE_WIDTH, 1);
}
}

/*
任意角度旋轉
*/
function turn(){
$this->TRUE_COLOR=imagecreatetruecolor($this->PICTURE_WIDTH,$this->PICTURE_HEIGHT);
imageCopyResized($this->TRUE_COLOR,$this->PICTURE_CREATE,0,0,0,0,$this->PICTURE_WIDTH,$this->PICTURE_HEIGHT,$this->PICTURE_WIDTH,$this->PICTURE_HEIGHT);
$WHITE=imagecolorallocate($this->TRUE_COLOR,255,255,255);
$this->TRUE_COLOR=imagerotate ($this->TRUE_COLOR, $this->CIRCUMROTATE, $WHITE);
}
/*
圖片銳化
*/
function sharp(){
$this->TRUE_COLOR=imagecreatetruecolor($this->PICTURE_WIDTH,$this->PICTURE_HEIGHT);
$cnt=0;
for ($x=0; $x<$this->PICTURE_WIDTH; $x++){
for ($y=0; $y<$this->PICTURE_HEIGHT; $y++)
{
$src_clr1 = imagecolorsforindex($this->TRUE_COLOR, imagecolorat($this->PICTURE_CREATE, $x-1, $y-1));
$src_clr2 = imagecolorsforindex($this->TRUE_COLOR, imagecolorat($this->PICTURE_CREATE, $x, $y));
$r = intval($src_clr2["red"]+$this->SHARP*($src_clr2["red"]-$src_clr1["red"]));
$g = intval($src_clr2["green"]+$this->SHARP*($src_clr2["green"]-$src_clr1["green"]));
$b = intval($src_clr2["blue"]+$this->SHARP*($src_clr2["blue"]-$src_clr1["blue"]));
$r = min(255, max($r, 0));
$g = min(255, max($g, 0));
$b = min(255, max($b, 0));
if (($DST_CLR=imagecolorexact($this->PICTURE_CREATE, $r, $g, $b))==-1)
$DST_CLR = imagecolorallocate($this->PICTURE_CREATE, $r, $g, $b);
$cnt++;
if ($DST_CLR==-1) die("color allocate faile at $x, $y ($cnt).");
imagesetpixel($this->TRUE_COLOR, $x, $y, $DST_CLR);
}
}
}

/*
將圖片反色處理??
*/
function return_color(){
/*
建立一個畫布
*/
$NEW_PICTURE_CREATE=imagecreate($this->PICTURE_WIDTH,$this->PICTURE_HEIGHT);
$WHITE=imagecolorallocate($NEW_PICTURE_CREATE,255,255,255);
/*
將背景圖拷貝到畫布中
*/
imagecopy($NEW_PICTURE_CREATE, $this->PICTURE_CREATE, 0, 0, 0, 0,$this->PICTURE_WIDTH,$this->PICTURE_HEIGHT);
$this->TRUE_COLOR=$NEW_PICTURE_CREATE;
}

/*
生成目標圖片並顯示
*/
function show(){
// 判斷瀏覽器,如果IE就不發送頭
if(isset($_SERVER['HTTP_USER_AGENT']))
{
$ua = strtoupper($_SERVER['HTTP_USER_AGENT']);
if(!preg_match('/^.*MSIE.*\)$/i',$ua))
{
header("Content-type:$this->PICTURE_MIME");
}
}
$OUT=$this->PICTURE_TYPE;
$OUT($this->TRUE_COLOR);
}

/*生成目標圖片並保存*/function save_picture(){// 以 JPEG 格式將圖像輸出到瀏覽器或文件$OUT=$this->PICTURE_TYPE;if(function_exists($OUT)){ // 判斷瀏覽器,如果IE就不發送頭 if(isset($_SERVER['HTTP_USER_AGENT'])) { $ua = strtoupper($_SERVER['HTTP_USER_AGENT']); if(!preg_match('/^.*MSIE.*\)$/i',$ua)) { header("Content-type:$this->PICTURE_MIME"); } } if(!$this->TRUE_COLOR){ exit($this->ERROR['unavilable']); }else{ $OUT($this->TRUE_COLOR,$this->DEST_URL); $OUT($this->TRUE_COLOR); }}}/*析構函數：釋放圖片*/function __destruct(){/*釋放圖片*/imagedestroy($this->TRUE_COLOR);imagedestroy($this->PICTURE_CREATE);}#end of class}?>