PHP中Imagick类，提供了比GD库函数更为方便和强大的图片处理功能。 <?php function contrast($type, $apply, $src, $dst, $w=0, $h=0, $x=0, $y=0, $f=true) { if($type) $s = 9; else $s = 0; if($f) $image = new Imagick($src); else $image = $src; if($apply) { $region = $image->getImageRegion($w, $h, $x, $y); $region->contrastImage($s); $image->compositeImage($region, $region->getImageCompose(), $x, $y); $region->destroy(); } else $image->contrastImage($s); $image->writeImage($dst); $image->destroy(); } function text($text, $color, $size, $font, $type=false, $src='') { $font = "include/font/" . $font . ".ttf"; $draw = new ImagickDraw(); $draw->setGravity( Imagick::GRAVITY_CENTER ); $draw->setFont($font); $draw->setFontSize($size); $draw->setFillColor( new ImagickPixel($color) ); $im = new imagick(); $properties = $im->queryFontMetrics( $draw, $text ); $im->newImage( intval($properties['textWidth']+5), intval($properties['textHeight']+5), new ImagickPixel('transparent') ); $im->setImageFormat('png'); $im->annotateImage($draw, 0, 0, 0, $text); if($type) { $im->writeImage($src); return $src; } else return $im; } function mark($text, $color, $size, $font, $src, $dst, $x, $y) { $im = text($text, $color, $size, $font); $image = new Imagick($src); $image->compositeImage($im, Imagick::COMPOSITE_OVER, $x, $y); $image->writeImage($dst); $im->destroy(); $image->destroy(); } function gaussianblur($radius, $apply, $src, $dst, $x=0, $y=0, $w=0, $h=0) { if($apply && $x==0 && $y==0 && $w==0 && $h==0) $apply = false; $image = new Imagick($src); if($apply) { $region = $image->getImageRegion($w, $h, $x, $y); $region->blurImage($radius, $radius); $image->compositeImage($region, $region->getImageCompose(), $x, $y); $region->destroy(); } else $image->blurImage($radius, $radius); $image->writeImage($dst); $image->destroy(); } function sharpen($radius, $apply, $src, $dst, $x=0, $y=0, $w=0, $h=0) { if($apply && $x==0 && $y==0 && $w==0 && $h==0) $apply = false; $image = new Imagick($src); if($apply) { $region = $image->getImageRegion($w, $h, $x, $y); $region->sharpenImage($radius, $radius); $image->compositeImage($region, $region->getImageCompose(), $x, $y); $region->destroy(); } else $image->sharpenImage($radius, $radius); $image->writeImage($dst); $image->destroy(); } function raise($raise, $apply, $src, $dst, $x=0, $y=0, $w=0, $h=0) { if($apply && $x==0 && $y==0 && $w==0 && $h==0) $apply = false; $image = new Imagick($src); if($apply) { if($w > (2*$raise) && $h > (2*$raise)) { $region = $image->getImageRegion($w, $h, $x, $y); $region->raiseImage($raise, $raise, 0, 0, true); $image->compositeImage($region, $region->getImageCompose(), $x, $y); $region->destroy(); } } else { $info = $image->getImageGeometry(); if($info["width"] > (2*$raise) && $info["height"] > (2*$raise)) { $image->raiseImage($raise, $raise, 0, 0, true); } } $image->writeImage($dst); $image->destroy(); } function frame($frame_width, $frame_height, $bevel, $color, $apply, $src, $dst, $x=0, $y=0, $w=0, $h=0) { if($apply && $x==0 && $y==0 && $w==0 && $h==0) $apply = false; $image = new Imagick($src); $framecolor = new ImagickPixel($color); if($apply) { $region = $image->getImageRegion($w, $h, $x, $y); $region->frameImage($framecolor, $frame_width, $frame_height, $bevel, $bevel); $image->compositeImage($region, $region->getImageCompose(), $x, $y); $region->destroy(); } else $image->frameImage($framecolor, $frame_width, $frame_height, $bevel, $bevel); $image->writeImage($dst); $framecolor->destroy(); $image->destroy(); } function oilpaint($radius, $apply, $src, $dst, $x=0, $y=0, $w=0, $h=0) { if($apply && $x==0 && $y==0 && $w==0 && $h==0) $apply = false; $image = new Imagick($src); if($apply) { $region = $image->getImageRegion($w, $h, $x, $y); $region->oilPaintImage($radius); $image->compositeImage($region, $region->getImageCompose(), $x, $y); $region->destroy(); } else $image->oilPaintImage($radius); $image->writeImage($dst); $image->destroy(); } function spread($radius, $apply, $src, $dst, $x=0, $y=0, $w=0, $h=0) { if($apply && $x==0 && $y==0 && $w==0 && $h==0) $apply = false; $image = new Imagick($src); if($apply) { $region = $image->getImageRegion($w, $h, $x, $y); $region->spreadImage($radius); $image->compositeImage($region, $region->getImageCompose(), $x, $y); $region->destroy(); } else $image->spreadImage($radius); $image->writeImage($dst); $image->destroy(); } function polaroidEffect($src, $dst, $color, $angle=0) { if(abs($angle) != 15) { $srcs = array($src, $src, $src, $src); $bg = new ImagickDraw(); $images = new Imagick($srcs); $format = $images->getImageFormat(); $maxwidth = 0; $maxheight = 0; foreach($images as $key => $im) { $im->setImageFormat("png"); $im->setImageBackgroundColor( new ImagickPixel("black") ); $angle = mt_rand(-20, 20); if($angle == 0) $angle = -1; $im->polaroidImage($bg, $angle); $info = $im->getImageGeometry(); $maxwidth = max($maxwidth, $info["width"]); $maxheight = max($maxheight, $info["height"]); } $image = new Imagick(); $image->newImage($maxwidth, $maxheight, new ImagickPixel($color)); foreach($images as $key => $im) { $image->compositeImage($im, $im->getImageCompose(), 0, 0); } $image->setImageFormat($format); $bg->destroy(); $images->destroy(); } else { $image = new Imagick($src); $format = $image->getImageFormat(); $image->frameImage(new ImagickPixel("white"), 6, 6, 0, 0); $image->frameImage(new ImagickPixel("gray"), 1, 1, 0, 0); $image->setImageFormat("png"); $shadow = $image->clone(); $shadow->setImageBackgroundColor( new ImagickPixel("black") ); $shadow->shadowImage(50, 3, 0, 0); $shadow->compositeImage($image, $image->getImageCompose(), 0, 0); $shadow->rotateImage(new ImagickPixel($color), $angle); $info = $shadow->getImageGeometry(); $image->destroy(); $image = new Imagick(); $image->newImage($info["width"], $info["height"], new ImagickPixel($color)); $image->compositeImage($shadow, $shadow->getImageCompose(), 0, 0); $image->setImageFormat($format); $shadow->destroy(); } $image->writeImage($dst); $image->destroy(); } function brushpng($src, $dst, $color, $size, $brushpath) { $image = new Imagick($src); $info = $image->getImageGeometry(); $image->destroy(); if(file_exists($dst)) $image = new Imagick($dst); else { $image = new Imagick(); $image->newImage($info["width"], $info["height"], "transparent", "png"); //$image->setImageFormat("png"); } $draw = new ImagickDraw(); $pixel = new ImagickPixel(); $pixel->setColor("transparent"); $draw->setFillColor($pixel); $pixel->setColor($color); $draw->setStrokeColor($pixel); $draw->setStrokeWidth($size); $draw->setStrokeLineCap(imagick::LINECAP_ROUND); $draw->setStrokeLineJoin(imagick::LINEJOIN_ROUND); $draw->polyline($brushpath); $image->drawImage($draw); $image->writeImage($dst); $pixel->destroy(); $draw->destroy(); $image->destroy(); } function dobrush($src, $dst, $png) { $image = new Imagick($src); if(file_exists($png)) { $imagepng = new Imagick($png); $imagepng->setImageFormat("png"); $image->compositeImage($imagepng, $imagepng->getImageCompose(), 0, 0); $imagepng->destroy(); } $image->writeImage($dst); $image->destroy(); } function rotate($src, $dst, $angle) { $image = new Imagick($src); $image->rotateImage(new ImagickPixel(), $angle); $image->writeImage($dst); $image->destroy(); } function brightness($src, $dst, $n, $s_x=0, $e_x=0, $s_y=0, $e_y=0, $type=true) { $im = new Imagick($src); $info = $im->getImageGeometry(); $w = $info["width"]; $h = $info["height"]; $format = $im->getImageFormat(); if($s_x == 0 && $s_y == 0 && $e_x == 0 && $e_y == 0) { $e_x = $w; $e_y = $h; } $image = new Imagick(); $image->newImage($w, $h, "transparent"); $draw = new ImagickDraw(); for($x=0; $x<$w; $x++) { for($y=0; $y<$h; $y++) { $p = $im->getImagePixelColor($x, $y); $rgb = $p->getColor(); if( $x>=$s_x && $x<$e_x && $y>=$s_y && $y<$e_y ) { $rgb["r"] = $rgb["r"]+$rgb["r"]*$n; $rgb["g"] = $rgb["g"]+$rgb["g"]*$n; $rgb["b"] = $rgb["b"]+$rgb["b"]*$n; $rgb["r"] = min(255, $rgb["r"]); $rgb["r"] = max(0, $rgb["r"]); $rgb["g"] = min(255, $rgb["g"]); $rgb["g"] = max(0, $rgb["g"]); $rgb["b"] = min(255, $rgb["b"]); $rgb["b"] = max(0, $rgb["b"]); } $p->setColor("rgb({$rgb["r"]},{$rgb["g"]},{$rgb["b"]})"); $draw->setFillColor($p); $draw->point($x, $y); } } $image->drawImage($draw); $image->setImageFormat($format); if($type) $image->writeImage($dst); else return $image; } function grayscale($src, $dst, $apply, $x=0, $y=0, $w=0, $h=0) { if($apply && $x==0 && $y==0 && $w==0 && $h==0) $apply = false; $image = new Imagick($src); if($apply) { $region = $image->getImageRegion($w, $h, $x, $y); $clone = $region->clone(); $clone = $region->fximage('p{0,0}'); $region->compositeImage($clone, imagick::COMPOSITE_DIFFERENCE,0,0); $region->modulateImage(100, 0 , 0); $image->compositeImage($region, $region->getImageCompose(), $x, $y); } else { $clone = $image->clone(); $clone = $image->clone(); $clone = $image->fximage('p{0,0}'); $image->compositeImage($clone,imagick::COMPOSITE_DIFFERENCE,0,0); $image->modulateImage(100, 0 , 0); } $image->writeImage($dst); $image->clear(); $image->destroy(); } function prequality($src, $dst, $q) { exec("convert -quality {$q} {$src} {$dst}"); } ?>
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