protected function _crop($width, $height, $xoffset = null, $yoffset = null)
{
$newWidth = $width == 0 ? $this->getWidth() : $width;
$newHeight = $height == 0 ? $this->getHeight() : $height;
$xOffset = $xoffset == 0 ? 0 : $xoffset;
$yOffset = $yoffset == 0 ? 0 : $yoffset;
MagickCropImage($this->_resource, $newWidth, $newHeight, $xOffset, $yOffset);
}
/**
* 裁剪图片
* @param int $width 要裁剪的宽度
* @param int $height 要裁剪的高度
* @param int $x 裁剪起始横坐标x
* @param int $y 裁剪起始纵坐标y
* @return bool 成功返回true，失败返回false
*/
public function cropImage($width, $height, $x, $y)
{
return MagickCropImage(self::$resource, $width, $height, $x, $y);
}
/**
* Crop the image
*
* @param Asido_TMP &$tmp
* @param integer $x
* @param integer $y
* @param integer $width
* @param integer $height
* @return boolean
* @access protected
*/
function __crop(&$tmp, $x, $y, $width, $height)
{
if (!MagickCropImage($tmp->target, $width, $height, $x, $y)) {
return false;
}
$t = NewMagickWand();
MagickNewImage($t, $width, $height);
if (!MagickCompositeImage($t, $tmp->target, MW_OverCompositeOp, 0, 0)) {
return false;
}
$this->__destroy_target($tmp);
$tmp->target = $t;
$tmp->image_width = $width;
$tmp->image_height = $height;
return true;
}
/**
* Image Process Using MagickWand
*
* This function will resize, crop or rotate
*
* @access public
* @auth John Meng
* @param string
* @return bool
*/
function image_process_magickwand($action = 'resize')
{
if (!file_exists($this->full_src_path)) {
$this->set_error("Image source file not found!");
return false;
}
if (file_exists($this->full_dst_path)) {
@unlink("{$this->full_dst_path}");
}
$magick_wand = NewMagickWand();
MagickRemoveImageProfiles($magick_wand);
MagickSetCompressionQuality($magick_wand, $this->quality);
MagickReadImage($magick_wand, $this->full_src_path);
switch ($action) {
case 'crop':
MagickCropImage($magick_wand, $this->width, $this->height, $this->x_axis, $this->y_axis);
break;
case 'rotate':
switch ($this->rotation_angle) {
case 90:
$angle = 90;
break;
case 180:
$angle = 180;
break;
case 270:
$angle = 270;
break;
case 'vrt':
$angle = 180;
break;
case 'hor':
$angle = 270;
break;
}
MagickRotateImage($magick_wand, null, $angle);
break;
case 'resize':
default:
MagickResizeImage($magick_wand, $this->width, $this->height, MW_LanczosFilter, 1.0);
break;
}
MagickWriteImage($magick_wand, $this->full_dst_path);
DestroymagickWand($magick_wand);
// Set the file to 777
@chmod($this->full_dst_path, $this->dir_write_mode);
return TRUE;
}
