PHP は Imagick モジュールを使用して、gif 画像を含む画像のズーム、トリミング、圧縮を行います
ズームクロップ
保存時間压缩处理
ImagickService.php
/**
* 画像処理サービスクラス
* PHP 拡張サービス Imagick を使用して実装
* ImageMagick 公式サイトアドレス [url]http:www.imagemagick.org/script/index.php[/url]
*
* @author weiguang3
* @ 20140403から
*/
class ImagickService {
private $image = null;
private $type = null;
// 构造関数
public function __construct() {
}
// 解析関数
public function __destruct() {
if ($this->image !== null)
$this->image->destroy ();
}
public function init(){
}
/ / ダウンロード画像
public function open($path) {
$this->image = new Imagick ( $path );
if ($this->image) {
$this->type = strto lower ( $ this->image->getImageFormat () );
}
return $this->image;
}
/**
* 画像のトリミング
* トリミングのルール:
* 1. 高さは空またはゼロです。幅に応じて高さを調整します。
* 2. 幅は空またはゼロです。
* 3. 幅、高さをいいえ 空またはゼロの場合、幅と高さの比率に従って拡大縮小し、頭の中心から切り抜きます
* @paramnumber $width
* @paramnumber $height
*/
public function raise($width=0, $height=0) ){
if($width==0 && $height==0){
return;
}
$color = '';// 'rgba(255,255,255,1)';
$size = $this-> ;image->getImagePage ();
//原始宽高
$src_width = $size ['width'];
$src_height = $size ['height'];
//按宽度缩放高自适应
if($width!=0 && $height==0){
if($src_width>$width){
$height = intval($width*$src_height/$src_width);
if ($this->gt; type == 'gif') {
$this->_resizeGif($width, $height);
}else{
$this->image->thumbnailImage ( $width, $height, true );
}
}
return;
}
//按高缩放宽度自适应
if($width==0 && $height!=0){
if($src_height>$height){
$width = intval($src_width) *$height/$src_height);
if ($this->type == 'gif') {
$this->_resizeGif($width, $height);
}else{
$this-> image->thumbnailImage ( $width, $height, true );
}
}
return;
}
//放放後の尺寸
$crop_w = $width;
$crop_h = $height;
/ /缩放後裁剪的位置
$crop_x = 0;
$crop_y = 0;
if(($src_width/$src_height) < ($width/$height)){
//宽高比小さい目标宽高比 宽度等比放大 按目标高从头部截取
$crop_h = intval($src_height*$width/$src_width);
//从顶部裁剪 不用计計算 $crop_y
}else{
//宽高比大上目标宽高比 高等剪裁比放大 按目标宽度居中裁
$crop_w = intval($src_width*$height/$src_height);
$crop_x = intval(($crop_w-$width)/2);
}
if ($this->type == 'gif') {
$this->_resizeGif($crop_w, $crop_h, true, $ width, $height,$crop_x, $crop_y);
} else {
$this->image->thumbnailImage ( $crop_w, $crop_h, true );
$this->image->cropImage($幅、$高さ、$crop_x、$crop_y);
}
}
/**
* GIF画像の加工にはフレームごとの処理が必要です
* @param 不明 $t_w スケール幅
* @param 不明 $t_h スケール高さ
* @param string $isCrop トリミングするかどうか
* @paramnumber $c_w トリミング幅
* @ param番号 $c_h トリミング高さ
* @paramnumber $c_x トリミング座標 x
* @paramnumber $c_y トリミング座標 y
*/
プライベート関数 _resizeGif($t_w, $t_h, $isCrop=false, $c_w=0, $c_h=0, $c_x=0, $c_y=0){
$dest = new Imagick();
$color_transparent = new ImagickPixel("transparent"); //透明色
foreach($this->image as $img){
$page = $img->getImagePage();
$tmp = new Imagick();
$tmp->newImage($page ['width'], $page['height'], $color_transparent, 'gif');
$tmp->compositeImage($img, Imagick::COMPOSITE_OVER, $page['x'], $page[' y']);
$tmp->thumbnailImage ( $t_w, $t_h, true );
if($isCrop){
$tmp->cropImage($c_w, $c_h, $c_x, $c_y) ;
}
$dest->addImage($tmp);
$dest->setImagePage($tmp->getImageWidth(), $tmp->getImageHeight(), 0, 0);
$dest ->setImageDelay($img->getImageDelay());
$dest->setImageDispose($img->getImageDispose());
}
$this->image->destroy ();
$this->image = $dest;
}
/**
* 画像サイズを変更します
* $fit: サイズメソッドに適応します
* 'force': 画像を $width に強制します 出力スケーリング後の画像サイズは $width と正確には等しくありません 背景の塗りつぶし色を設定します $bg_color = array(255,255,255)(赤、緑、青、透明度)
* 透明度 (0 不透明-127 完全透明)) その他: スマート モードでは画像を拡大縮小し、画像の中央部分を読み込むことができます $width X $ height ピクセル サイズ
* $fit = 'force','scale','scale_fill'の場合: 完全な画像を出力します
* $fit = 画像の向きの値の場合、部分画像の文字と指定位置の画像の対応関係を以下のように出力します:
* 北西 北北東
* 西中東
* 南西 南南東
*/
public function sinner_to($width = 100, $height = 100, $fit = 'center', $fill_color = array (255,255,255,0)) {
switch ($fit) {
case 'force' :
if ($this->type == 'gif') {
$image = $this->image;
$canvas = new Imagick ();
$images = $image->coalesceImages ();
foreach ( $images as $frame ) {
$img = new Imagick ();
$img->readImageBlob ( $frame ) ;
$img->thumbnailImage ( $width, $height, false );
$canvas->addImage ( $img );
$canvas->setImageDelay ( $img->getImageDelay () );
}
$image->destroy ();
$this->image = $canvas;
} else {
$this->image->thumbnailImage ( $width, $height, false );
}
Break;
case 'scale' :
if ($this->type == 'gif') {
$image = $this->image;
$images = $image->coalesceImages ();
$ Canvas = new Imagick ();
foreach ( $images as $frame ) {
$img = new Imagick ();
$img->readImageBlob ( $frame );
$img->thumbnailImage ( $width, $高さ、true );
$canvas->addImage ( $img );
$canvas->setImageDelay ( $img->getImageDelay () );
}
$image->destroy ();
$this->image = $canvas;
} else {
$this->image->thumbnailImage ( $width, $height, true );
}
break ;
case 'scale_fill' :
$size = $this->image->getImagePage ();
$src_width = $size ['width'];
$src_height = $size ['height'];
$x = 0;
$y = 0;
$dst_width = $width;
$dst_height = $height;
if ($src_width * $height > $src_height * $width) {
$dst_height = intval ( $width * $src_height / $src_width );
$y = intval ( ($height - $dst_height) / 2 );
} else {
$dst_width = intval ( $height * $src_width / $src_height );
$x = intval ( ($width - $dst_width) / 2 );
}
$image = $this->image;
$canvas = new Imagick ();
$color = 'rgba(' . $fill_color [ 0] . $fill_color [1] . $fill_color [3] ')';
if ($this->type == 'gif ') {
$images = $image->coalesceImages ();
foreach ( $images as $frame ) {
$frame->thumbnailImage ( $width, $height, true );
$draw = new ImagickDraw ();
$draw->composite ( $frame->getImageCompose (), $x, $y, $dst_width, $dst_height, $frame );
$img = new Imagick ();
$img- >newImage ( $width, $height, $color, 'gif' );
$img->drawImage ( $draw );
$canvas->addImage ( $img );
$canvas->setImageDelay ( $img->getImageDelay () );
$canvas->setImagePage ( $width, $height, 0, 0 );
}
} else {
$image->thumbnailImage ( $width, $height, true );
$draw = new ImagickDraw ();
$draw->composite ( $image->getImageCompose (), $x, $y, $dst_width, $dst_height, $image );
$canvas ->newImage ( $width, $height, $color, $this->get_type () );
$canvas->drawImage ( $draw );
$canvas->setImagePage ( $width, $height, 0, 0 );
}
$image->destroy ();
$this->image = $canvas;
break;
default :
$size = $this->image->getImagePage () ;
$src_width = $size ['width'];
$src_height = $size ['height'];
$crop_x = 0;
$crop_y = 0;
$crop_w = $src_width;
$crop_h = $src_height;
if ($src_width * $height > $src_height * $width) {
$crop_w = intval ( $src_height * $width / $height );
} else {
$crop_h = intval ( $src_width * $height / $width );
}
スイッチ ($fit) {
case 'north_west' :
$crop_x = 0;
$crop_y = 0;
break;
case 'north' :
$crop_x = intval ( ($src_width - $crop_w) / 2 );
$crop_y = 0;
break;
case 'north_east' :
$crop_x = $src_width - $crop_w;
$crop_y = 0;
break;
case '西' :
$crop_x = 0;
$ Crop_y = intval ( ($src_height - $crop_h) / 2 );
break;
case 'center' :
$crop_x = intval ( ($src_width - $crop_w) / 2 );
$crop_y = intval ( ($src_height) - $crop_h) / 2 );
break;
case 'east' :
$crop_x = $src_width - $crop_w;
$crop_y = intval ( ($src_height - $crop_h) / 2 );
break;
ケース 」南西' :
$crop_x = 0;
$crop_y = $src_height - $crop_h;
break;
case 'south' :
$crop_x = intval ( ($src_width - $crop_w) / 2 );
$crop_y = $ src_height - $crop_h;
break;
case 'south_east' :
$crop_x = $src_width - $crop_w;
$crop_y = $src_height - $crop_h;
break;
default :
$crop_x = intval ( ($src_width - $crop_w) / 2 );
$crop_y = intval ( ($src_height - $crop_h) / 2 );
}
$image = $this->image;
$canvas = new Imagick ();
if ($this->type == 'gif') {
$images = $image->coalesceImages ();
foreach ( $images as $frame ) {
$img = new Imagick ();
$img- >readImageBlob ( $frame );
$img->cropImage ( $crop_w, $crop_h, $crop_x, $crop_y );
$img->thumbnailImage ( $width, $height, true );
$canvas ->addImage ( $img );
$canvas->setImageDelay ( $img->getImageDelay () );
$canvas->setImagePage ( $width, $height, 0, 0 );
}
} else {
$image->cropImage ( $crop_w, $crop_h, $crop_x, $crop_y );
$image->thumbnailImage ( $width, $height, true );
$canvas->addImage ( $image );
$canvas->setImagePage ( $width, $height, 0, 0 );
}
$image->destroy ();
$this->image = $canvas;
}
}
// 追加水印图片
public function add_watermark($path, $x = 0, $y = 0) {
$watermark = new Imagick ( $path );
$draw = new ImagickDraw ();
$draw->複合 ( $watermark->getImageCompose (), $x, $y, $watermark->getImageWidth (), $watermark->getimageheight (), $watermark );
if ($this->type = = 'gif') {
$image = $this->image;
$canvas = new Imagick ();
$images = $image->coalesceImages ();
foreach ( $image as $frame ) {
$img = new Imagick ();
$img->readImageBlob ( $frame );
$img->drawImage ( $draw );
$canvas->addImage ( $img );
$canvas-> ;setImageDelay ( $img->getImageDelay () );
}
$image->destroy ();
$this->image = $canvas;
} else {
$this->image->drawImage ( $draw );
}
}
// 追加水印文字
public function add_text($text, $x = 0, $y = 0, $angle = 0, $style = array()) {
$draw = new ImagickDraw ();
if (isset ( $style [ 'font'] ))
$draw->setFont ( $style ['font_size'] );
if (isset ( $style ['font_size'] ))
$draw->setFontSize ( $style ['font_size '] );
if (isset ( $style ['fill_color'] ))
$draw->setFillColor ( $style ['fill_color'] );
if (isset ( $style ['under_color'] ))
$draw->setTextUnderColor ( $style ['under_color'] );
if ($this->type == 'gif') {
foreach ( $this->image as $frame ) {
$frame ->annotateImage ( $draw, $x, $y, $angle, $text );
}
} else {
$this->image->annotateImage ( $draw, $x, $y, $angle , $text );
}
}
// 指定路線径に保存
public function save_to($path) {
//压缩图片质量
$this->image->setImageFormat('JPEG');
$this->image->setImageCompression(Imagick::COMPRESSION_JPEG);
$a = $this->image->getImageCompressionQuality() * 0.60;
if ($a == 0) {
$a = 60;
}
$this->image->setImageCompressionQuality($a);
$this->image->stripImage();
if ($this->type == 'gif') {
$this->image->writeImages ( $path, true );
} else {
$this->image->writeImage ( $path );
}
}
// 出画像
public function Output($header = true) {
if ($header)
header ( 'Content-type: ' . $this->type );
echo $this->image->getImagesBlob ();
}
public function get_width() {
$size = $this->image->getImagePage ();
return $size ['width'];
}
public function get_height() {
$size = $this->image->getImagePage ();
return $size ['height'];
}
/ / 設置画像の種類、默认とソースの種類一致
public function set_type($type = 'png') {
$this->type = $type;
$this->image->setImageFormat ( $type );
}
// 获取源图像型
public function get_type() {
return $this->type;
}
public function get_file_size(){
if($this->image){
return 0 ;//$this->image->getImageLength(); getImageLength が見つかりません
}else{
return 0;
}
}
public function get_file_type(){
if($this->image){
return $this->image->getimagemimetype();
}else{
return 0;
}
}
public function get_sha1(){
if($this->image){
return sha1($this->image->__tostring());
} else{
return '';
}
}
//現在前のオブジェクトが图片であるかどうか
public function is_image() {
if ($this->image)
return true;
else
return false;
}
/*
* 追加一边框 $width: 左右边框宽度 $height: 上下边框宽度 $color: 颜色: RGB 颜色 'rgb(255,0,0)' または 16进制颜色 '#FF0000' または颜色单词 '白'/'赤'...
*/
public function border($width, $height, $color = 'rgb(220, 220, 220)') {
$color = new ImagickPixel ();
$color ->setColor ( $color );
$this->image->borderImage ( $color, $width, $height );
}
public function Blur($radius, $sigma) {
$this-> ;image->blurImage ( $radius, $sigma );
} // 模糊
public function gaussian_blur($radius, $sigma) {
$this->image->gaussianBlurImage ( $radius, $sigma );
} // 高斯模糊
public function motion_blur($radius, $sigma, $angle) {
$this->image->motionBlurImage ( $radius, $sigma, $angle );
}// モーション ブラー
public function radio_blur($radius) {
$this->image->radialBlurImage ( $radius );
} // ラジアル ブラー
public function add_noise($type = null) {
$this - >image->addNoiseImage ( $type == null ? imagick::NOISE_IMPULSE : $type );
} // ノイズを追加します
public function level($black_point, $gamma, $white_point) {
$this->> ; image->levelImage ( $black_point, $gamma, $white_point );
} // カラーレベルを調整します
public function modulate($brightness, $saturation, $hue) {
$this->image->modulateImage ( $brightness, $saturation, $hue );
} // 明るさ、彩度、色相を調整します
public function Charcoal($radius, $sigma) {
$this->image->charcoalImage ( $radius, $ sigma );
} // スケッチ
public functionoil_paint($radius) {
$this->image->oilPaintImage ( $radius );
} // 油絵エフェクト
public function flop() {
$this- >image->flopImage ();
} // 水平方向に反転
public function flick() {
$this->image->flipImage ();
} // 垂直方向に反転
}
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