PHP扩展之图像处理2——Gmagick库使用示例及相关类和函数

使用示例

<?php
//初始化一个新的Gmagick对象
$image = new Gmagick('example.jpg');

//通过加载的图片生成缩略图（保持纵横比）. 
$image->thumbnailImage(100, 0);

//创建图片的边框, 然后模拟图像使其看上去像一幅油画
$image->borderImage("yellow", 8, 8)->oilPaintImage(0.3);

//将当前图片写入到一个文件
$image->write('example_thumbnail.jpg');
?>

相关和类函数

1.Gmagick类

Gmagick::addimage — 添加一张新的图片到 Gmagick 对象图片列表
Gmagick::addnoiseimage — 添加随机噪声到图片
Gmagick::annotateimage — 为图片添加文字注释
Gmagick::blurimage — 为图像添加模糊滤镜效果
Gmagick::borderimage — 在图像四周添加边框
Gmagick::charcoalimage — 模拟素描
Gmagick::chopimage — 从图像中移除一块区域
Gmagick::clear — 清除与Gmagick对象相关的所有资源
Gmagick::commentimage — 添加注释到图像
Gmagick::compositeimage — 合成一个图像到另一个图像
Gmagick::__construct — Gmagick构造器
Gmagick::cropimage — 裁剪获取图片指定区域
Gmagick::cropthumbnailimage — 先缩放再裁剪从而创建一个指定尺寸的缩略图
Gmagick::current — 当前目标
Gmagick::cyclecolormapimage — Displaces an image's colormap
Gmagick::deconstructimages — Returns certain pixel differences between images
Gmagick::despeckleimage — The despeckleimage purpose
Gmagick::destroy — 销毁Gmagick对象，释放内存空间
Gmagick::drawimage — Renders the GmagickDraw object on the current image
Gmagick::edgeimage — Enhance edges within the image
Gmagick::embossimage — Returns a grayscale image with a three-dimensional effect
Gmagick::enhanceimage — Improves the quality of a noisy image
Gmagick::equalizeimage — Equalizes the image histogram
Gmagick::flipimage — Creates a vertical mirror image
Gmagick::flopimage — The flopimage purpose
Gmagick::frameimage — Adds a simulated three-dimensional border
Gmagick::gammaimage — Gamma-corrects an image
Gmagick::getcopyright — Returns the GraphicsMagick API copyright as a string
Gmagick::getfilename — The filename associated with an image sequence
Gmagick::getimagebackgroundcolor — Returns the image background color
Gmagick::getimageblueprimary — Returns the chromaticy blue primary point
Gmagick::getimagebordercolor — Returns the image border color
Gmagick::getimagechanneldepth — Gets the depth for a particular image channel
Gmagick::getimagecolors — Returns the color of the specified colormap index
Gmagick::getimagecolorspace — Gets the image colorspace
Gmagick::getimagecompose — Returns the composite operator associated with the image
Gmagick::getimagedelay — Gets the image delay
Gmagick::getimagedepth — Gets the depth of the image
Gmagick::getimagedispose — Gets the image disposal method
Gmagick::getimageextrema — Gets the extrema for the image
Gmagick::getimagefilename — Returns the filename of a particular image in a sequence
Gmagick::getimageformat — Returns the format of a particular image in a sequence
Gmagick::getimagegamma — Gets the image gamma
Gmagick::getimagegreenprimary — Returns the chromaticy green primary point
Gmagick::getimageheight — 返回图像高度
Gmagick::getimagehistogram — Gets the image histogram
Gmagick::getimageindex — Gets the index of the current active image
Gmagick::getimageinterlacescheme — Gets the image interlace scheme
Gmagick::getimageiterations — Gets the image iterations
Gmagick::getimagematte — Return if the image has a matte channel
Gmagick::getimagemattecolor — Returns the image matte color
Gmagick::getimageprofile — Returns the named image profile.
Gmagick::getimageredprimary — Returns the chromaticity red primary point
Gmagick::getimagerenderingintent — Gets the image rendering intent
Gmagick::getimageresolution — Gets the image X and Y resolution
Gmagick::getimagescene — Gets the image scene
Gmagick::getimagesignature — Generates an SHA-256 message digest
Gmagick::getimagetype — Gets the potential image type.
Gmagick::getimageunits — Gets the image units of resolution
Gmagick::getimagewhitepoint — Returns the chromaticity white point
Gmagick::getimagewidth — 返回图像宽度
Gmagick::getpackagename — Returns the GraphicsMagick package name.
Gmagick::getquantumdepth — Returns the Gmagick quantum depth as a string.
Gmagick::getreleasedate — Returns the GraphicsMagick release date as a string.
Gmagick::getsamplingfactors — Gets the horizontal and vertical sampling factor.
Gmagick::getsize — 返回与当前gmagick对象相关联的尺寸
Gmagick::getversion — 返回当前GraphicsMagick API的版本
Gmagick::hasnextimage — 检查对象是否包含更多图像
Gmagick::haspreviousimage — Checks if the object has a previous image
Gmagick::implodeimage — Creates a new image as a copy
Gmagick::labelimage — Adds a label to an image.
Gmagick::levelimage — Adjusts the levels of an image
Gmagick::magnifyimage — Scales an image proportionally 2x
Gmagick::mapimage — Replaces the colors of an image with the closest color from a reference image.
Gmagick::medianfilterimage — Applies a digital filter
Gmagick::minifyimage — Scales an image proportionally to half its size
Gmagick::modulateimage — Control the brightness, saturation, and hue
Gmagick::motionblurimage — Simulates motion blur
Gmagick::newimage — 创建一个新的图像
Gmagick::nextimage — 移动到下一张图片
Gmagick::normalizeimage — Enhances the contrast of a color image
Gmagick::oilpaintimage — 模拟油画效果（使用示例:本篇文章开头的示例代码）
Gmagick::previousimage — Move to the previous image in the object
Gmagick::profileimage — Adds or removes a profile from an image
Gmagick::quantizeimage — Analyzes the colors within a reference image
Gmagick::quantizeimages — The quantizeimages purpose
Gmagick::queryfontmetrics — Returns an array representing the font metrics
Gmagick::queryfonts — Returns the configured fonts
Gmagick::queryformats — Returns formats supported by Gmagick.
Gmagick::radialblurimage — Radial blurs an image
Gmagick::raiseimage — Creates a simulated 3d button-like effect
Gmagick::read — 从文件名中读取图像
Gmagick::readimage — 从文件名中读取图像
Gmagick::readimageblob — Reads image from a binary string
Gmagick::readimagefile — The readimagefile purpose
Gmagick::reducenoiseimage — Smooths the contours of an image
Gmagick::removeimage — Removes an image from the image list
Gmagick::removeimageprofile — Removes the named image profile and returns it
Gmagick::resampleimage — Resample image to desired resolution
Gmagick::resizeimage — 调整图像尺寸
Gmagick::rollimage — 偏移图像
Gmagick::rotateimage — 旋转图片
Gmagick::scaleimage — 调整图片大小
Gmagick::separateimagechannel — Separates a channel from the image
Gmagick::setfilename — 在读取或者写入图片之前设置文件名
Gmagick::setimagebackgroundcolor — 设置图像背景色
Gmagick::setimageblueprimary — Sets the image chromaticity blue primary point.
Gmagick::setimagebordercolor — 设置图像边框颜色.
Gmagick::setimagechanneldepth — Sets the depth of a particular image channel
Gmagick::setimagecolorspace — Sets the image colorspace
Gmagick::setimagecompose — Sets the image composite operator
Gmagick::setimagedelay — Sets the image delay
Gmagick::setimagedepth — Sets the image depth
Gmagick::setimagedispose — Sets the image disposal method
Gmagick::setimagefilename — 在一个序列中设置特定图片的文件名
Gmagick::setimageformat — Sets the format of a particular image
Gmagick::setimagegamma — Sets the image gamma
Gmagick::setimagegreenprimary — TSets the image chromaticity green primary point.
Gmagick::setimageindex — Set the iterator to the position in the image list specified with the index parameter
Gmagick::setimageinterlacescheme — Sets the interlace scheme of the image.
Gmagick::setimageiterations — Sets the image iterations.
Gmagick::setimageprofile — Adds a named profile to the Gmagick object
Gmagick::setimageredprimary — Sets the image chromaticity red primary point.
Gmagick::setimagerenderingintent — Sets the image rendering intent
Gmagick::setimageresolution — Sets the image resolution
Gmagick::setimagescene — 设置图片场景
Gmagick::setimagetype — 设置图片类型
Gmagick::setimageunits — Sets the image units of resolution.
Gmagick::setimagewhitepoint — Sets the image chromaticity white point.
Gmagick::setsamplingfactors — Sets the image sampling factors.
Gmagick::setsize — Sets the size of the Gmagick object
Gmagick::shearimage — Creating a parallelogram
Gmagick::solarizeimage — Applies a solarizing effect to the image
Gmagick::spreadimage — Randomly displaces each pixel in a block
Gmagick::stripimage — Strips an image of all profiles and comments
Gmagick::swirlimage — Swirls the pixels about the center of the image
Gmagick::thumbnailimage — Changes the size of an image
Gmagick::trimimage — Remove edges from the image
Gmagick::write — 将图片写入到指定文件名，如果文件名为空，则图片写入到Gmagick::ReadImage()或者Gmagick::SetImageFilename()设置的文件名中。
Gmagick::writeimage — 将图片写入指定文件名，与Gmagick::write的区别在于writeimage函数包含一个可选的布尔参数all_frames。

2.GmagickDraw 类

GmagickDraw::annotate — Draws text on the image
GmagickDraw::arc — Draws an arc
GmagickDraw::bezier — Draws a bezier curve
GmagickDraw::ellipse — Draws an ellipse on the image
GmagickDraw::getfillcolor — Returns the fill color
GmagickDraw::getfillopacity — Returns the opacity used when drawing
GmagickDraw::getfont — Returns the font
GmagickDraw::getfontsize — Returns the font pointsize
GmagickDraw::getfontstyle — Returns the font style
GmagickDraw::getfontweight — Returns the font weight
GmagickDraw::getstrokecolor — Returns the color used for stroking object outlines
GmagickDraw::getstrokeopacity — Returns the opacity of stroked object outlines
GmagickDraw::getstrokewidth — Returns the width of the stroke used to draw object outlines
GmagickDraw::gettextdecoration — Returns the text decoration
GmagickDraw::gettextencoding — Returns the code set used for text annotations
GmagickDraw::line — The line purpose
GmagickDraw::point — Draws a point
GmagickDraw::polygon — Draws a polygon
GmagickDraw::polyline — Draws a polyline
GmagickDraw::rectangle — Draws a rectangle
GmagickDraw::rotate — Applies the specified rotation to the current coordinate space
GmagickDraw::roundrectangle — Draws a rounded rectangle
GmagickDraw::scale — Adjusts the scaling factor
GmagickDraw::setfillcolor — Sets the fill color to be used for drawing filled objects.
GmagickDraw::setfillopacity — The setfillopacity purpose
GmagickDraw::setfont — Sets the fully-specified font to use when annotating with text.
GmagickDraw::setfontsize — Sets the font pointsize to use when annotating with text.
GmagickDraw::setfontstyle — Sets the font style to use when annotating with text
GmagickDraw::setfontweight — Sets the font weight
GmagickDraw::setstrokecolor — Sets the color used for stroking object outlines.
GmagickDraw::setstrokeopacity — Specifies the opacity of stroked object outlines.
GmagickDraw::setstrokewidth — Sets the width of the stroke used to draw object outlines.
GmagickDraw::settextdecoration — Specifies a decoration
GmagickDraw::settextencoding — Specifies specifies the text code set

3.GmagickPixel 类

GmagickPixel::__construct — The GmagickPixel constructor
GmagickPixel::getcolor — Returns the color
GmagickPixel::getcolorcount — Returns the color count associated with this color
GmagickPixel::getcolorvalue — Gets the normalized value of the provided color channel
GmagickPixel::setcolor — Sets the color
GmagickPixel::setcolorvalue — Sets the normalized value of one of the channels

编程技巧