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@wudi
Created October 16, 2014 05:10
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Imagick图片处理类库
<?php
class Imagick
{
/**
* @var \Imagick
*/
private $image = NULL;
private $type = NULL;
// 构造函数
public function __construct($image = NULL)
{
if ($image) {
$this->readImage($image);
}
}
/**
* 载入图像
*
* @param string $image
*
* @return $this
*/
public function readImage($image)
{
if (@is_file($image)) {
$this->image = new \Imagick($image);
} else {
$this->image = new \Imagick();
$this->image->readImageBlob($image);
}
$this->image->setInterlaceScheme(\Imagick::INTERLACE_PLANE); //交错显示
$this->type = strtolower($this->image->getImageFormat());
return $this;
}
/**
* 裁剪
*
* @param int $x
* @param int $y
* @param null $width
* @param null $height
*/
public function crop($x = 0, $y = 0, $width = NULL, $height = NULL)
{
if ($width == NULL) {
$width = $this->image->getImageWidth() - $x;
}
if ($height == NULL) {
$height = $this->image->getImageHeight() - $y;
}
if ($width <= 0 || $height <= 0) {
return;
}
if ($this->type == 'gif') {
$image = $this->image;
$canvas = new \Imagick();
$images = $image->coalesceImages();
foreach ($images as $frame) {
$img = new \Imagick();
$img->readImageBlob($frame);
$img->cropImage($width, $height, $x, $y);
$canvas->addImage($img);
$canvas->setImageDelay($img->getImageDelay());
$canvas->setImagePage($width, $height, 0, 0);
}
$image->destroy();
$this->image = $canvas;
} else {
$this->image->cropImage($width, $height, $x, $y);
}
}
/**
* 更改图像大小
* $fit: 适应大小方式
* 'force': 把图片强制变形成 $width X $height 大小
* 'scale': 按比例在安全框 $width X $height 内缩放图片, 输出缩放后图像大小 不完全等于 $width X $height
* 'scale_fill': 按比例在安全框 $width X $height 内缩放图片,安全框内没有像素的地方填充色,
* 使用此参数时可设置背景填充色 $bg_color = array(255,255,255)(红,绿,蓝, 透明度) 透明度(0不透明-127完全透明))
* 其它: 智能模能 缩放图像并载取图像的中间部分 $width X $height 像素大小
* $fit = 'force','scale','scale_fill' 时: 输出完整图像
* $fit = 图像方位值 时, 输出指定位置部分图像
* 字母与图像的对应关系如下:
* north_west north north_east
* west center east
* south_west south south_east
*
* @param int $width
* @param int $height
* @param string $fit
* @param array $fill_color
*
* @return $this
*/
public function resize($width = 100, $height = 100, $fit = 'center', $fill_color = array(255, 255, 255, 0))
{
$canvas = new \Imagick();
$canvas->setInterlaceScheme(\Imagick::INTERLACE_PLANE);
switch ($fit) {
case 'force':
if ($this->type == 'gif') {
$image = $this->image;
$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 = $image->coalesceImages();
foreach ($images as $frame) {
$img = new \Imagick();
$img->readImageBlob($frame);
$img->thumbnailImage($width, $height, 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;
$color = 'rgba(' . $fill_color[0] . ',' . $fill_color[1] . ',' . $fill_color[2] . ',' . $fill_color[3] . ')';
if ($this->type == 'gif') {
$images = $image->coalesceImages();
foreach ($images as $frame) {
/**@var \Imagick $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->getType());
$canvas->drawImage($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_y = $crop_x = 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 / $width);
}
switch ($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 'west':
$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;
case 'south_west':
$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 = $this->image;
if ($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;
}
return $this;
}
/**
* 添加水印图片
*
* @param $path
* @param int $x
* @param int $y
*/
public function addWatermark($path, $x = 0, $y = 0)
{
$watermark = new \Imagick($path);
$draw = new \ImagickDraw();
$draw->composite($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);
}
}
/**
* 添加水印文字
*
* @param $text
* @param int $x
* @param int $y
* @param int $angle
* @param array $style
*/
public function addText($text, $x = 0, $y = 0, $angle = 0, $style = array())
{
$draw = new \ImagickDraw();
if (isset($style['font'])) {
$draw->setFont($style['font']);
}
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) {
/**@var \Imagick $frame */
$frame->annotateImage($draw, $x, $y, $angle, $text);
}
} else {
$this->image->annotateImage($draw, $x, $y, $angle, $text);
}
}
/**
* 保存到指定路径
*
* @param $path
*
* @return bool
*/
public function saveTo($path)
{
if ($this->type == 'gif') {
return $this->image->writeImages($path, true);
} else {
return $this->image->writeImage($path);
}
}
/**
* 输出图像
*
* @param bool $header
*/
public function output($header = true)
{
ob_end_clean();
if ($header) {
header('Content-type: image/' . $this->type);
}
echo $this->image->getImagesBlob();
exit(1);
}
public function getWidth()
{
$size = $this->image->getImagePage();
return $size['width'];
}
public function getHeight()
{
$size = $this->image->getImagePage();
return $size['height'];
}
/**
* 设置图像类型, 默认与源类型一致
*
* @param string $type
*/
public function setType($type = 'png')
{
$this->type = $type;
$this->image->setImageFormat($type);
}
/**
* 获取源图像类型
*
* @return null
*/
public function getType()
{
return $this->type;
}
/**
* 当前对象是否为图片
*
* @return bool
*/
public function isImage()
{
return $this->image ? true : false;
}
/**
* 生成缩略图 $fit为真时将保持比例并在安全框 $width X $height 内生成缩略图片
*
* @param int $width
* @param int $height
* @param bool $fit
*/
public function thumbnail($width = 100, $height = 100, $fit = true)
{
$this->image->thumbnailImage($width, $height, $fit);
}
/**
* 添加一个边框
*
* @param int $width 左右边框宽度
* @param int $height 上下边框宽度
* @param string $color 颜色: RGB 颜色 'rgb(255,0,0)' 或 16进制颜色 '#FF0000' 或颜色单词 'white'/'red'...
*/
public function border($width, $height, $color = 'rgb(220, 220, 220)')
{
$color = new \ImagickPixel($color);
//$color->setColor($color);
$this->image->borderImage($color, $width, $height);
}
/**
* 模糊
*
* @param $radius
* @param $sigma
*/
public function blur($radius, $sigma)
{
$this->image->blurImage($radius, $sigma);
}
/**
* 高斯模糊
*
* @param $radius
* @param $sigma
*/
public function gaussianBlur($radius, $sigma)
{
$this->image->gaussianBlurImage($radius, $sigma);
}
/**
* 运动模糊
*
* @param $radius
* @param $sigma
* @param $angle
*/
public function motionBlur($radius, $sigma, $angle)
{
$this->image->motionBlurImage($radius, $sigma, $angle);
}
/**
* 径向模糊
*
* @param $radius
*/
public function radialBlur($radius)
{
$this->image->radialBlurImage($radius);
}
/**
* 添加噪点
*
* @param null $type
*/
public function addNoise($type = NULL)
{
$this->image->addNoiseImage($type == NULL ? \Imagick::NOISE_IMPULSE : $type);
}
/**
* 调整色阶
*
* @param $black_point
* @param $gamma
* @param $white_point
*/
public function level($black_point, $gamma, $white_point)
{
$this->image->levelImage($black_point, $gamma, $white_point);
}
/**
* 调整亮度、饱和度、色调
*
* @param $brightness
* @param $saturation
* @param $hue
*/
public function modulate($brightness, $saturation, $hue)
{
$this->image->modulateImage($brightness, $saturation, $hue);
}
/**
* 素描
*
* @param $radius
* @param $sigma
*/
public function charcoal($radius, $sigma)
{
$this->image->charcoalImage($radius, $sigma);
}
/**
* 油画效果
*
* @param $radius
*/
public function oilPaint($radius)
{
$this->image->oilPaintImage($radius);
}
/**
* 水平翻转
*/
public function flop()
{
$this->image->flopImage();
}
/**
* 垂直翻转
*/
public function flip()
{
$this->image->flipImage();
}
public function __destruct()
{
if ($this->image !== NULL) {
$this->image->destroy();
}
}
}
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