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<?php
class ThumbHandler {
var $dst_img; // 目標(biāo)文件
var $h_src; // 圖片資源句柄
var $h_dst; // 新圖句柄
var $h_mask; // 水印句柄
var $img_create_quality = 100; // 圖片生成質(zhì)量
var $img_display_quality = 80; // 圖片顯示質(zhì)量,默認(rèn)為75
var $img_scale = 0; // 圖片縮放比例
var $src_w = 0; // 原圖寬度
var $src_h = 0; // 原圖高度
var $dst_w = 0; // 新圖總寬度
var $dst_h = 0; // 新圖總高度
var $fill_w; // 填充圖形寬
var $fill_h; // 填充圖形高
var $copy_w; // 拷貝圖形寬
var $copy_h; // 拷貝圖形高
var $src_x = 0; // 原圖繪制起始橫坐標(biāo)
var $src_y = 0; // 原圖繪制起始縱坐標(biāo)
var $start_x; // 新圖繪制起始橫坐標(biāo)
var $start_y; // 新圖繪制起始縱坐標(biāo)
var $mask_word; // 水印文字
var $mask_img; // 水印圖片
var $mask_pos_x = 0; // 水印橫坐標(biāo)
var $mask_pos_y = 0; // 水印縱坐標(biāo)
var $mask_offset_x = 5; // 水印橫向偏移
var $mask_offset_y = 5; // 水印縱向偏移
var $font_w; // 水印字體寬
var $font_h; // 水印字體高
var $mask_w; // 水印寬
var $mask_h; // 水印高
var $mask_font_color = "#ffffff"; // 水印文字顏色
var $mask_font = 2; // 水印字體
var $font_size; // 尺寸
var $mask_position = 0; // 水印位置
var $mask_img_pct = 50; // 圖片合并程度,值越大，合并程序越低
var $mask_txt_pct = 50; // 文字合并程度,值越小，合并程序越低
var $img_border_size = 0; // 圖片邊框尺寸
var $img_border_color; // 圖片邊框顏色
var $_flip_x = 0; // 水平翻轉(zhuǎn)次數(shù)
var $_flip_y = 0; // 垂直翻轉(zhuǎn)次數(shù)
var $cut_type = 0; // 剪切類型
var $img_type; // 文件類型
// 文件類型定義,并指出了輸出圖片的函數(shù)
var $all_type = array ("jpg" => array ("output" => "imagejpeg" ), "gif" => array ("output" => "imagegif" ), "png" => array ("output" => "imagepng" ), "wbmp" => array ("output" => "image2wbmp" ), "jpeg" => array ("output" => "imagejpeg" ) );
/**
* 構(gòu)造函數(shù)
*/
function ThumbHandler() {
$this->mask_font_color = "#ffffff";
$this->font = 2;
$this->font_size = 12;
}
/**
* 取得圖片的寬
*/
function getImgWidth($src) {
return imagesx ( $src );
}
/**
* 取得圖片的高
*/
function getImgHeight($src) {
return imagesy ( $src );
}
/**
* 設(shè)置圖片生成路徑
*
* @param string $src_img 圖片生成路徑
*/
function setSrcImg($src_img, $img_type = null) {
echo $img_type;
if (! file_exists ( $src_img )) {
die ( "圖片不存在" );
}
if (! empty ( $img_type )) {
$this->img_type = $img_type;
} else {
$this->img_type = $this->_getImgType ( $src_img );
}
$this->_checkValid ( $this->img_type );
// file_get_contents函數(shù)要求php版本>4.3.0
$src = '';
if (function_exists ( "file_get_contents" )) {
$src = file_get_contents ( $src_img );
} else {
$handle = fopen ( $src_img, "r" );
while ( ! feof ( $handle ) ) {
$src .= fgets ( $fd, 4096 );
}
fclose ( $handle );
}
if (empty ( $src )) {
die ( "圖片源為空" );
}
$this->h_src = @ImageCreateFromString ( $src );
$this->src_w = $this->getImgWidth ( $this->h_src );
$this->src_h = $this->getImgHeight ( $this->h_src );
}
/**
* 設(shè)置圖片生成路徑
*
* @param string $dst_img 圖片生成路徑
*/
function setDstImg($dst_img) {
$arr = explode ( '/', $dst_img );
$last = array_pop ( $arr );
$path = implode ( '/', $arr );
$this->_mkdirs ( $path );
$this->dst_img = $dst_img;
}
/**
* 設(shè)置圖片的顯示質(zhì)量
*
* @param string $n 質(zhì)量
*/
function setImgDisplayQuality($n) {
$this->img_display_quality = ( int ) $n;
}
/**
* 設(shè)置圖片的生成質(zhì)量
*
* @param string $n 質(zhì)量
*/
function setImgCreateQuality($n) {
$this->img_create_quality = ( int ) $n;
}
/**
* 設(shè)置文字水印
*
* @param string $word 水印文字
* @param integer $font 水印字體
* @param string $color 水印字體顏色
*/
function setMaskWord($word) {
$this->mask_word .= $word;
}
/**
* 設(shè)置字體顏色
*
* @param string $color 字體顏色
*/
function setMaskFontColor($color = "#ffffff") {
$this->mask_font_color = $color;
}
/**
* 設(shè)置水印字體
*
* @param string|integer $font 字體
*/
function setMaskFont($font = 2) {
if (! is_numeric ( $font ) && ! file_exists ( $font )) {
die ( "字體文件不存在" );
}
$this->font = $font;
}
/**
* 設(shè)置文字字體大小,僅對(duì)truetype字體有效
*/
function setMaskFontSize($size = "12") {
$this->font_size = $size;
}
/**
* 設(shè)置圖片水印
*
* @param string $img 水印圖片源
*/
function setMaskImg($img) {
$this->mask_img = $img;
}
/**
* 設(shè)置水印橫向偏移
*
* @param integer $x 橫向偏移量
*/
function setMaskOffsetX($x) {
$this->mask_offset_x = ( int ) $x;
}
/**
* 設(shè)置水印縱向偏移
*
* @param integer $y 縱向偏移量
*/
function setMaskOffsetY($y) {
$this->mask_offset_y = ( int ) $y;
}
/**
* 指定水印位置
*
* @param integer $position 位置,1:左上,2:左下,3:右上,0/4:右下
*/
function setMaskPosition($position = 0) {
$this->mask_position = ( int ) $position;
}
/**
* 設(shè)置圖片合并程度
*
* @param integer $n 合并程度
*/
function setMaskImgPct($n) {
$this->mask_img_pct = ( int ) $n;
}
/**
* 設(shè)置文字合并程度
*
* @param integer $n 合并程度
*/
function setMaskTxtPct($n) {
$this->mask_txt_pct = ( int ) $n;
}
/**
* 設(shè)置縮略圖邊框
*
* @param (類型) (參數(shù)名) (描述)
*/
function setDstImgBorder($size = 1, $color = "#000000") {
$this->img_border_size = ( int ) $size;
$this->img_border_color = $color;
}
/**
* 水平翻轉(zhuǎn)
*/
function flipH() {
$this->_flip_x ++;
}
/**
* 垂直翻轉(zhuǎn)
*/
function flipV() {
$this->_flip_y ++;
}
/**
* 設(shè)置剪切類型
*
* @param (類型) (參數(shù)名) (描述)
*/
function setCutType($type) {
$this->cut_type = ( int ) $type;
}
/**
* 設(shè)置圖片剪切
*
* @param integer $width 矩形剪切
*/
function setRectangleCut($width, $height) {
$this->fill_w = ( int ) $width;
$this->fill_h = ( int ) $height;
}
/**
* 設(shè)置源圖剪切起始坐標(biāo)點(diǎn)
*
* @param (類型) (參數(shù)名) (描述)
*/
function setSrcCutPosition($x, $y) {
$this->src_x = ( int ) $x;
$this->src_y = ( int ) $y;
}
/**
* 創(chuàng)建圖片,主函數(shù)
* @param integer $a 當(dāng)缺少第二個(gè)參數(shù)時(shí)，此參數(shù)將用作百分比，
* 否則作為寬度值
* @param integer $b 圖片縮放后的高度
*/
function createImg($a, $b = null) {
$num = func_num_args ();
if (1 == $num) {
$r = ( int ) $a;
if ($r < 1) {
die ( "圖片縮放比例不得小于1" );
}
$this->img_scale = $r;
$this->_setNewImgSize ( $r );
}
if (2 == $num) {
$w = ( int ) $a;
$h = ( int ) $b;
if (0 == $w) {
die ( "目標(biāo)寬度不能為0" );
}
if (0 == $h) {
die ( "目標(biāo)高度不能為0" );
}
$this->_setNewImgSize ( $w, $h );
}
if ($this->_flip_x % 2 != 0) {
$this->_flipH ( $this->h_src );
}
if ($this->_flip_y % 2 != 0) {
$this->_flipV ( $this->h_src );
}
$this->_createMask ();
$this->_output ();
// 釋放
if (imagedestroy ( $this->h_src ) && imagedestroy ( $this->h_dst )) {
Return true;
} else {
Return false;
}
}
/**
* 生成水印,調(diào)用了生成水印文字和水印圖片兩個(gè)方法
*/
function _createMask() {
if ($this->mask_word) {
// 獲取字體信息
$this->_setFontInfo ();
if ($this->_isFull ()) {
die ( "水印文字過大" );
} else {
$this->h_dst = imagecreatetruecolor ( $this->dst_w, $this->dst_h );
$white = ImageColorAllocate ( $this->h_dst, 255, 255, 255 );
imagefilledrectangle ( $this->h_dst, 0, 0, $this->dst_w, $this->dst_h, $white ); // 填充背景色
$this->_drawBorder ();
imagecopyresampled ( $this->h_dst, $this->h_src, $this->start_x, $this->start_y, $this->src_x, $this->src_y, $this->fill_w, $this->fill_h, $this->copy_w, $this->copy_h );
$this->_createMaskWord ( $this->h_dst );
}
}
if ($this->mask_img) {
$this->_loadMaskImg (); //加載時(shí)，取得寬高
if ($this->_isFull ()) {
// 將水印生成在原圖上再拷
$this->_createMaskImg ( $this->h_src );
$this->h_dst = imagecreatetruecolor ( $this->dst_w, $this->dst_h );
$white = ImageColorAllocate ( $this->h_dst, 255, 255, 255 );
imagefilledrectangle ( $this->h_dst, 0, 0, $this->dst_w, $this->dst_h, $white ); // 填充背景色
$this->_drawBorder ();
imagecopyresampled ( $this->h_dst, $this->h_src, $this->start_x, $this->start_y, $this->src_x, $this->src_y, $this->fill_w, $this->start_y, $this->copy_w, $this->copy_h );
} else {
// 創(chuàng)建新圖并拷貝
$this->h_dst = imagecreatetruecolor ( $this->dst_w, $this->dst_h );
$white = ImageColorAllocate ( $this->h_dst, 255, 255, 255 );
imagefilledrectangle ( $this->h_dst, 0, 0, $this->dst_w, $this->dst_h, $white ); // 填充背景色
$this->_drawBorder ();
imagecopyresampled ( $this->h_dst, $this->h_src, $this->start_x, $this->start_y, $this->src_x, $this->src_y, $this->fill_w, $this->fill_h, $this->copy_w, $this->copy_h );
$this->_createMaskImg ( $this->h_dst );
}
}
if (empty ( $this->mask_word ) && empty ( $this->mask_img )) {
$this->h_dst = imagecreatetruecolor ( $this->dst_w, $this->dst_h );
$white = ImageColorAllocate ( $this->h_dst, 255, 255, 255 );
imagefilledrectangle ( $this->h_dst, 0, 0, $this->dst_w, $this->dst_h, $white ); // 填充背景色
$this->_drawBorder ();
imagecopyresampled ( $this->h_dst, $this->h_src, $this->start_x, $this->start_y, $this->src_x, $this->src_y, $this->fill_w, $this->fill_h, $this->copy_w, $this->copy_h );
}
}
/**
* 畫邊框
*/
function _drawBorder() {
if (! empty ( $this->img_border_size )) {
$c = $this->_parseColor ( $this->img_border_color );
$color = ImageColorAllocate ( $this->h_src, $c [0], $c [1], $c [2] );
imagefilledrectangle ( $this->h_dst, 0, 0, $this->dst_w, $this->dst_h, $color ); // 填充背景色
}
}
/**
* 生成水印文字
*/
function _createMaskWord($src) {
$this->_countMaskPos ();
$this->_checkMaskValid ();
$c = $this->_parseColor ( $this->mask_font_color );
$color = imagecolorallocatealpha ( $src, $c [0], $c [1], $c [2], $this->mask_txt_pct );
if (is_numeric ( $this->font )) {
imagestring ( $src, $this->font, $this->mask_pos_x, $this->mask_pos_y, $this->mask_word, $color );
} else {
imagettftext ( $src, $this->font_size, 0, $this->mask_pos_x, $this->mask_pos_y, $color, $this->font, $this->mask_word );
}
}
/**
* 生成水印圖
*/
function _createMaskImg($src) {
$this->_countMaskPos ();
$this->_checkMaskValid ();
imagecopymerge ( $src, $this->h_mask, $this->mask_pos_x, $this->mask_pos_y, 0, 0, $this->mask_w, $this->mask_h, $this->mask_img_pct );
imagedestroy ( $this->h_mask );
}
/**
* 加載水印圖
*/
function _loadMaskImg() {
$mask_type = $this->_getImgType ( $this->mask_img );
$this->_checkValid ( $mask_type );
// file_get_contents函數(shù)要求php版本>4.3.0
$src = '';
if (function_exists ( "file_get_contents" )) {
$src = file_get_contents ( $this->mask_img );
} else {
$handle = fopen ( $this->mask_img, "r" );
while ( ! feof ( $handle ) ) {
$src .= fgets ( $fd, 4096 );
}
fclose ( $handle );
}
if (empty ( $this->mask_img )) {
die ( "水印圖片為空" );
}
$this->h_mask = ImageCreateFromString ( $src );
$this->mask_w = $this->getImgWidth ( $this->h_mask );
$this->mask_h = $this->getImgHeight ( $this->h_mask );
}
/**
* 圖片輸出
*/
function _output() {
$img_type = $this->img_type;
$func_name = $this->all_type [$img_type] ['output'];
if (function_exists ( $func_name )) {
// 判斷瀏覽器,若是IE就不發(fā)送頭
if (isset ( $_SERVER ['HTTP_USER_AGENT'] )) {
$ua = strtoupper ( $_SERVER ['HTTP_USER_AGENT'] );
if (! preg_match ( '/^.*MSIE.*\)$/i', $ua )) {
header ( "Content-type:$img_type" );
}
}
$func_name ( $this->h_dst, $this->dst_img, $this->img_display_quality );
} else {
Return false;
}
}
/**
* 分析顏色
*
* @param string $color 十六進(jìn)制顏色
*/
function _parseColor($color) {
$arr = array ();
for($ii = 1; $ii < strlen ( $color ); $ii ++) {
$arr [] = hexdec ( substr ( $color, $ii, 2 ) );
$ii ++;
}
Return $arr;
}
/**
* 計(jì)算出位置坐標(biāo)
*/
function _countMaskPos() {
if ($this->_isFull ()) {
switch ($this->mask_position) {
case 1 :
// 左上
$this->mask_pos_x = $this->mask_offset_x + $this->img_border_size;
$this->mask_pos_y = $this->mask_offset_y + $this->img_border_size;
break;
case 2 :
// 左下
$this->mask_pos_x = $this->mask_offset_x + $this->img_border_size;
$this->mask_pos_y = $this->src_h - $this->mask_h - $this->mask_offset_y;
break;
case 3 :
// 右上
$this->mask_pos_x = $this->src_w - $this->mask_w - $this->mask_offset_x;
$this->mask_pos_y = $this->mask_offset_y + $this->img_border_size;
break;
case 4 :
// 右下
$this->mask_pos_x = $this->src_w - $this->mask_w - $this->mask_offset_x;
$this->mask_pos_y = $this->src_h - $this->mask_h - $this->mask_offset_y;
break;
default :
// 默認(rèn)將水印放到右下,偏移指定像素
$this->mask_pos_x = $this->src_w - $this->mask_w - $this->mask_offset_x;
$this->mask_pos_y = $this->src_h - $this->mask_h - $this->mask_offset_y;
break;
}
} else {
switch ($this->mask_position) {
case 1 :
// 左上
$this->mask_pos_x = $this->mask_offset_x + $this->img_border_size;
$this->mask_pos_y = $this->mask_offset_y + $this->img_border_size;
break;
case 2 :
// 左下
$this->mask_pos_x = $this->mask_offset_x + $this->img_border_size;
$this->mask_pos_y = $this->dst_h - $this->mask_h - $this->mask_offset_y - $this->img_border_size;
break;
case 3 :
// 右上
$this->mask_pos_x = $this->dst_w - $this->mask_w - $this->mask_offset_x - $this->img_border_size;
$this->mask_pos_y = $this->mask_offset_y + $this->img_border_size;
break;
case 4 :
// 右下
$this->mask_pos_x = $this->dst_w - $this->mask_w - $this->mask_offset_x - $this->img_border_size;
$this->mask_pos_y = $this->dst_h - $this->mask_h - $this->mask_offset_y - $this->img_border_size;
break;
default :
// 默認(rèn)將水印放到右下,偏移指定像素
$this->mask_pos_x = $this->dst_w - $this->mask_w - $this->mask_offset_x - $this->img_border_size;
$this->mask_pos_y = $this->dst_h - $this->mask_h - $this->mask_offset_y - $this->img_border_size;
break;
}
}
}
/**
* 設(shè)置字體信息
*/
function _setFontInfo() {
if (is_numeric ( $this->font )) {
$this->font_w = imagefontwidth ( $this->font );
$this->font_h = imagefontheight ( $this->font );
// 計(jì)算水印字體所占寬高
$word_length = strlen ( $this->mask_word );
$this->mask_w = $this->font_w * $word_length;
$this->mask_h = $this->font_h;
} else {
$arr = imagettfbbox ( $this->font_size, 0, $this->font, $this->mask_word );
$this->mask_w = abs ( $arr [0] - $arr [2] );
$this->mask_h = abs ( $arr [7] - $arr [1] );
}
}
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