给骨头系统开发的图像库的 imagick 部分 ,支持 gif , 完美支持裁切、生成缩略图、添加水印 。
支持按方位生成缩略图像, 如:
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$image->resize_to(100, 100, 'north_west');
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$image->resize_to(100, 100, 'east');
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...
更多参数看源代码
原图
效果图:
调用方式:
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include 'imagick.class.php';
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$image = new lib_image_imagick();
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$image->open('a.gif');
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$image->resize_to(100, 100, 'scale_fill');
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$image->add_text('1024i.com', 10, 20);
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$image->add_watermark('1024i.gif', 10, 50);
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$image->save_to('x.gif');
imagick.class.php
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<?php
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class lib_image_imagick
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{
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private $image = null;
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private $type = null;
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public function __construct(){}
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public function __destruct()
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{
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if($this->image!==null) $this->image->destroy();
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}
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public function open($path)
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{
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$this->image = new Imagick( $path );
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if($this->image)
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{
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$this->type = strtolower($this->image->getImageFormat());
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}
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return $this->image;
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}
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public function crop($x=0, $y=0, $width=null, $height=null)
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{
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if($width==null) $width = $this->image->getImageWidth()-$x;
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if($height==null) $height = $this->image->getImageHeight()-$y;
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if($width<=0 || $height<=0) return;
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if($this->type=='gif')
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{
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$image = $this->image;
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$canvas = new Imagick();
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$images = $image->coalesceImages();
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foreach($images as $frame){
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$img = new Imagick();
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$img->readImageBlob($frame);
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$img->cropImage($width, $height, $x, $y);
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$canvas->addImage( $img );
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$canvas->setImageDelay( $img->getImageDelay() );
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$canvas->setImagePage($width, $height, 0, 0);
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}
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$image->destroy();
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$this->image = $canvas;
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}
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else
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{
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$this->image->cropImage($width, $height, $x, $y);
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}
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}
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public function resize_to($width = 100, $height = 100, $fit = 'center', $fill_color = array(255,255,255,0) )
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{
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switch($fit)
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{
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case 'force':
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if($this->type=='gif')
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{
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$image = $this->image;
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$canvas = new Imagick();
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$images = $image->coalesceImages();
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foreach($images as $frame){
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$img = new Imagick();
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$img->readImageBlob($frame);
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$img->thumbnailImage( $width, $height, false );
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$canvas->addImage( $img );
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$canvas->setImageDelay( $img->getImageDelay() );
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}
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$image->destroy();
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$this->image = $canvas;
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}
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else
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{
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$this->image->thumbnailImage( $width, $height, false );
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}
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break;
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case 'scale':
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if($this->type=='gif')
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{
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$image = $this->image;
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$images = $image->coalesceImages();
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$canvas = new Imagick();
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foreach($images as $frame){
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$img = new Imagick();
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$img->readImageBlob($frame);
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$img->thumbnailImage( $width, $height, true );
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$canvas->addImage( $img );
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$canvas->setImageDelay( $img->getImageDelay() );
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}
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$image->destroy();
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$this->image = $canvas;
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}
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else
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{
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$this->image->thumbnailImage( $width, $height, true );
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}
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break;
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case 'scale_fill':
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$size = $this->image->getImagePage();
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$src_width = $size['width'];
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$src_height = $size['height'];
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$x = 0;
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$y = 0;
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$dst_width = $width;
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$dst_height = $height;
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if($src_width*$height > $src_height*$width)
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{
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$dst_height = intval($width*$src_height/$src_width);
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$y = intval( ($height-$dst_height)/2 );
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}
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else
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{
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$dst_width = intval($height*$src_width/$src_height);
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$x = intval( ($width-$dst_width)/2 );
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}
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$image = $this->image;
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$canvas = new Imagick();
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$color = 'rgba('.$fill_color[0].','.$fill_color[1].','.$fill_color[2].','.$fill_color[3].')';
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if($this->type=='gif')
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{
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$images = $image->coalesceImages();
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foreach($images as $frame)
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{
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$frame->thumbnailImage( $width, $height, true );
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$draw = new ImagickDraw();
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$draw->composite($frame->getImageCompose(), $x, $y, $dst_width, $dst_height, $frame);
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$img = new Imagick();
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$img->newImage($width, $height, $color, 'gif');
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$img->drawImage($draw);
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$canvas->addImage( $img );
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$canvas->setImageDelay( $img->getImageDelay() );
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$canvas->setImagePage($width, $height, 0, 0);
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}
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}
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else
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{
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$image->thumbnailImage( $width, $height, true );
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$draw = new ImagickDraw();
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$draw->composite($image->getImageCompose(), $x, $y, $dst_width, $dst_height, $image);
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$canvas->newImage($width, $height, $color, $this->get_type() );
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$canvas->drawImage($draw);
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$canvas->setImagePage($width, $height, 0, 0);
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}
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$image->destroy();
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$this->image = $canvas;
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break;
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default:
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$size = $this->image->getImagePage();
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$src_width = $size['width'];
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$src_height = $size['height'];
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$crop_x = 0;
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$crop_y = 0;
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$crop_w = $src_width;
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$crop_h = $src_height;
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if($src_width*$height > $src_height*$width)
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{
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$crop_w = intval($src_height*$width/$height);
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}
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else
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{
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$crop_h = intval($src_width*$height/$width);
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}
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switch($fit)
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{
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case 'north_west':
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$crop_x = 0;
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$crop_y = 0;
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break;
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case 'north':
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$crop_x = intval( ($src_width-$crop_w)/2 );
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$crop_y = 0;
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break;
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case 'north_east':
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$crop_x = $src_width-$crop_w;
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$crop_y = 0;
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break;
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case 'west':
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$crop_x = 0;
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$crop_y = intval( ($src_height-$crop_h)/2 );
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break;
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case 'center':
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$crop_x = intval( ($src_width-$crop_w)/2 );
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$crop_y = intval( ($src_height-$crop_h)/2 );
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break;
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case 'east':
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$crop_x = $src_width-$crop_w;
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$crop_y = intval( ($src_height-$crop_h)/2 );
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break;
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case 'south_west':
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$crop_x = 0;
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$crop_y = $src_height-$crop_h;
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break;
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case 'south':
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$crop_x = intval( ($src_width-$crop_w)/2 );
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$crop_y = $src_height-$crop_h;
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break;
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case 'south_east':
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$crop_x = $src_width-$crop_w;
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$crop_y = $src_height-$crop_h;
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break;
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default:
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$crop_x = intval( ($src_width-$crop_w)/2 );
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$crop_y = intval( ($src_height-$crop_h)/2 );
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}
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$image = $this->image;
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$canvas = new Imagick();
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if($this->type=='gif')
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{
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$images = $image->coalesceImages();
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foreach($images as $frame){
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$img = new Imagick();
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$img->readImageBlob($frame);
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$img->cropImage($crop_w, $crop_h, $crop_x, $crop_y);
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$img->thumbnailImage( $width, $height, true );
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$canvas->addImage( $img );
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$canvas->setImageDelay( $img->getImageDelay() );
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$canvas->setImagePage($width, $height, 0, 0);
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}
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}
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else
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{
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$image->cropImage($crop_w, $crop_h, $crop_x, $crop_y);
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$image->thumbnailImage( $width, $height, true );
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$canvas->addImage( $image );
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$canvas->setImagePage($width, $height, 0, 0);
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}
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$image->destroy();
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$this->image = $canvas;
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}
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}
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public function add_watermark($path, $x = 0, $y = 0)
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{
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$watermark = new Imagick($path);
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$draw = new ImagickDraw();
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$draw->composite($watermark->getImageCompose(), $x, $y, $watermark->getImageWidth(), $watermark->getimageheight(), $watermark);
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if($this->type=='gif')
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{
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$image = $this->image;
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$canvas = new Imagick();
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$images = $image->coalesceImages();
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foreach($image as $frame)
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{
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$img = new Imagick();
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$img->readImageBlob($frame);
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$img->drawImage($draw);
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$canvas->addImage( $img );
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$canvas->setImageDelay( $img->getImageDelay() );
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}
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$image->destroy();
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$this->image = $canvas;
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}
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else
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{
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$this->image->drawImage($draw);
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}
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}
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public function add_text($text, $x = 0 , $y = 0, $angle=0, $style=array())
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{
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$draw = new ImagickDraw();
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if(isset($style['font'])) $draw->setFont($style['font']);
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if(isset($style['font_size'])) $draw->setFontSize($style['font_size']);
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if(isset($style['fill_color'])) $draw->setFillColor($style['fill_color']);
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if(isset($style['under_color'])) $draw->setTextUnderColor($style['under_color']);
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if($this->type=='gif')
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{
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foreach($this->image as $frame)
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{
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$frame->annotateImage($draw, $x, $y, $angle, $text);
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}
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}
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else
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{
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$this->image->annotateImage($draw, $x, $y, $angle, $text);
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}
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}
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public function save_to( $path )
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{
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if($this->type=='gif')
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{
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$this->image->writeImages($path, true);
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}
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else
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{
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$this->image->writeImage($path);
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}
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}
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public function output($header = true)
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{
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if($header) header('Content-type: '.$this->type);
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echo $this->image->getImagesBlob();
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}
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public function get_width()
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{
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$size = $this->image->getImagePage();
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return $size['width'];
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}
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public function get_height()
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{
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$size = $this->image->getImagePage();
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return $size['height'];
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}
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public function set_type( $type='png' )
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{
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$this->type = $type;
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$this->image->setImageFormat( $type );
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}
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public function get_type()
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{
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return $this->type;
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}
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public function is_image()
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{
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if( $this->image )
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return true;
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else
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return false;
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}
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public function thumbnail($width = 100, $height = 100, $fit = true){ $this->image->thumbnailImage( $width, $height, $fit );}
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public function border($width, $height, $color='rgb(220, 220, 220)')
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{
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$color=new ImagickPixel();
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$color->setColor($color);
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$this->image->borderImage($color, $width, $height);
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}
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public function blur($radius, $sigma){$this->image->blurImage($radius, $sigma);}
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public function gaussian_blur($radius, $sigma){$this->image->gaussianBlurImage($radius, $sigma);}
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public function motion_blur($radius, $sigma, $angle){$this->image->motionBlurImage($radius, $sigma, $angle);}
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public function radial_blur($radius){$this->image->radialBlurImage($radius);}
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public function add_noise($type=null){$this->image->addNoiseImage($type==null?imagick::NOISE_IMPULSE:$type);}
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public function level($black_point, $gamma, $white_point){$this->image->levelImage($black_point, $gamma, $white_point);}
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public function modulate($brightness, $saturation, $hue){$this->image->modulateImage($brightness, $saturation, $hue);}
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public function charcoal($radius, $sigma){$this->image->charcoalImage($radius, $sigma);}
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public function oil_paint($radius){$this->image->oilPaintImage($radius);}
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public function flop(){$this->image->flopImage();}
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public function flip(){$this->image->flipImage();}
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}
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