The pure PHP graphics library¶
This library implements input, output and processing of raster images in pure PHP, so that image processing PHP extensions are not required.
This allows developers to eliminate some portability issues from their applications.
The basic usage is like this:
<?php
use Mike42\GfxPhp\Image;
$img = Image::fromFile("colorwheel256.png");
$img -> write("test.gif");
Features¶
- Format support includes PNG, GIF, BMP and the Netpbm formats.
- Support for scaling, cropping, format conversion and colorspace transformations.
- Pure PHP: This library does not require Gd, ImageMagick or GraphicsMagick extensions.
Contribute¶
- Issue Tracker: https://github.com/mike42/gfx-php/issues
- Source Code: https://github.com/mike42/gfx-php
Navigation¶
File formats¶
Input formats¶
Files are read from a file or URL by using the Image::fromFile()
function:
use Mike42\GfxPhp\Image;
$tux = Image::fromFile("tux.png")
If the your image is not being read from a file, then Image::fromBlob()
can load it from a binary string:
use Mike42\GfxPhp\Image;
$tuxStr = "...";
$tux = Image::fromBlob($tuxStr, "tux.png");
In either case, the input format is determined using the file’s magic number.
PNG¶
The PNG codec is used where the input has the png
file extension.
All valid PNG files can be read, including:
- RGB or RGBA images
- Indexed images
- Monochrome images, from 1 to 16 bits per pixel
- Interlaced images
This library currently has limited support for transparency, and will discard any alpha channel from a PNG file when it is loaded.
GIF¶
The GIF codec is used where the input has the gif
file extension. Any well-formed GIF file can be read, but there are some limitations:
- If a GIF file contains multiple images, then only the first one will be loaded
- If a transparent color is present, then this will be mixed to white
A GIF image will always be loaded into an instance of IndexedRasterImage
, which makes palette information available.
BMP¶
The BMP codec is used where the input has the bmp
or dib
file extensions. Most uncompressed or run-length encoded bitmap files can be read by this library.
The returned object will be an instance of instance of IndexedRasterImage
if the color depth is 8 or lower.
24-bit, 16-bit and 32-bit bitmap images are also supported, and will be loaded into an instance of RgbRasterImage
. If an alpha channel is used, then it will be mixed to white.
Netpbm Formats¶
The Netpbm formats are a series of uncompressed bitmap formats, which can represent most types of image. These formats can be read by gfx-php
:
PNM: | This is a file extension only. Files carrying .pnm extension can carry any of the below formats. |
---|---|
PPM: | This is a color raster format. A PPM file is identified by the P6 magic number, and will be loaded into an instance of RgbRasterImage . |
PGM: | This is a monochrome raster format. A PGM file is identified by the P5 magic number, and will be loaded instance of GrayscaleRasterImage . |
PBM: | This is a 1-bit bitmap format. A PBM file is identified by the P4 header, and loaded into an instance of BlackAndWhiteRasterImage . |
Each of these formats has both a binary and text encoding. gfx-php
only supports the binary encodings at this stage.
WBMP ^^^
The WBMP codec is used where the input has the wbmp
file extension. A WBMP image will always be loaded into a BlackAndWhiteRasterImage
object.
Output formats¶
When you write a RasterImage
to a file, you need to specify a filename. The extension on this file is used to determine the desired output format.
There is currently no mechanism to write a file directly to a string.
PNG¶
The PNG format is selected by using the png
file extension when you call RasterImage::write()
.
$tux -> write("tux.png");
This library will currently output PNG files as RGB data. If you write to PNG from an instance of RgbRasterImage
, then no conversion has to be done, so the output is significantly faster.
GIF¶
The GIF format is selected by using the gif
file extension.
$tux -> write("tux.gif");
This format is limited to using a 256-color palette.
- If your image is not an IndexedRasterImage, then it is indexed when you write.
- If the image uses more than 256 colors, then it will be converted to an 8-bit RGB representation (3 bits red, 3 bits green, 2 bits blue), which introduces some distortions.
When you are creating GIF images, then you can avoid these conversions by using a IndexedRasterImage
with a palette of fewer than 256 colors.
There is no encoder for multi-image GIF files at this stage.
BMP¶
The BMP format is selected by using the bmp
file extension.
$tux -> write("tux.bmp");
This library will currently output BMP files using an uncompressed 24-bit RGB representation of the image.
WBMP ^^^
The WBMP format is selected by using the wbmp
file extension.
$tux -> write("tux.wbmp");
The image will be converted to a 1-bit monochrome representation, which is the only type of image supported by WBMP.
Netpbm Formats¶
The Netpbm formats can be used for output. Each format is identified by their respective file extension:
$tux -> write("tux.ppm");
$tux -> write("tux.pgm";
$tux -> write("tux.pbm");
Since each of these formats has a different raster data representation, you should be aware that
PPM: | For this output format, the file is converted to a RgbRasterImage and typically written with a 24 bit color depth. In some cases, a 48 bit color depth will be used. |
---|---|
PGM: | The file is converted to a GrayscaleRasterImage and written with a depth of 8 or 16 bits per pixel. |
PPM: | The file is converted to a BlackAndWhiteRasterImage and written with 1 bit per pixel. |
If you want to avoid these conversions, then you should use the pnm
extension to write your files. Since files with this extension can hold any of the above formats, the output encoder will avoid converting the raster data where possible.
$tux -> write("tux.pnm");
Image types¶
Every raster image in gfx-php
implements the RasterImage
interface.
There are several classes that implement this interface, which handle different representations of the image data.
RgbRasterImage
- Holds RGB data.
GrayscaleRasterImage
- Holds monochrome data.
BlackAndWhiteRasterImage
- Holds 1-bit raster data.
IndexedRasterImage
- Holds an image and associated palette.
Creating an image¶
Each of these classes has a static method which can be used to create an image of that type.
These only require a width
and height
.
use Mike42\GfxPhp\BlackAndWhiteRasterImage;
$image = BlackAndWhiteRasterImage::create(50, 100);
Converting between image types¶
You can convert between image types. This is similar to performing a color-space conversion in an image editor.
use Mike42\GfxPhp\Image;
$image = Image::load("tux.ppm");
$image -> toBlackAndWhite();
The methods to use are:
RasterImage::toBlackAndWhite()
RasterImage::toGrayscale()
RasterImage::toIndexed()
RasterImage::toRgb()
Each of these returns an image of the requested type. They work by instantiating a new image, then copying across the data as accurately as possible. As a result, the original image is unmodified.
Implicit conversions¶
Some file formats only accept specific types of raster data, so the RasterImage::write()
method will need to convert it. For example, this .pbm
will be limited to 2 colors, which is achieved by using RasterImage:toBlackAndWhite
in the background:
use Mike42\GfxPhp\Image;
$wheel = Image::load("colorwheel.ppm");
$wheel -> write("wheel.pbm");
Since converting the color space creates a new image, the image stored in $wheel
is unmodified.
License¶
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You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the library, if
necessary. Here is a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright interest in the
library `Frob' (a library for tweaking knobs) written by James Random
Hacker.
<signature of Ty Coon>, 1 April 1990
Ty Coon, President of Vice
That's all there is to it!
Contributor guide¶
This project is open source, and is built on a voluntary basis by developers like you. You can help to improve it by contributing code & documentation to the repository, or by interacting with other developers and users on the issue tracker.
Where to ask a question¶
If you need to seek clarification, then you are welcome to post questions about the library to the gfx-php issue tracker. They will be tagged question
, and closed once there is an answer.
If your question is incomplete or not specific to this project, then it will be tagged invalid
and closed with a short explanation. We do this to keep the issue tracker focussed, on-topic and actionable by project contributors.
The StackOverflow help page How do I ask a good question? contains advice about writing complete questions.
How to report a bug¶
We track bugs as GitHub issues. If something does not work as documented, then you are welcome to make a bug report on the gfx-php issue tracker
When posting a bug:
- Check for open issues first. If the same issue has already been reported, then you should post any additional information to the existing thread.
- Describe what you are trying to do, and how the actual behaviour of the library differs from what you expected.
- Include a self-contained code snippet that demonstrates the issue, as PHP code formatted in a code block
- Try to use images from the repository to demonstrate the problem. If you need to use a specific example image, then attach it to the issue in a
.zip
file.
Bug reports will stay open as long as they are actionable. Generally, this means that they can be replicated on the current stable release, and there is some expectation that the issue is solvable.
The title and tags on your bug may be edited so that it can be distinguished from other bugs.
Feature requests¶
You can also make suggestions for new features on the gfx-php issue tracker. These are tagged enhancement
.
Please keep the scope and resources of the project in mind when making suggestions.
Development process¶
The project is hosted online on the services below:
Code: | https://github.com/mike42/gfx-php |
---|---|
Continuous integration: | |
https://travis-ci.org/mike42/gfx-php | |
Code coverage reporting: | |
https://coveralls.io/github/mike42/gfx-php | |
Documentation: | https://gfx-php.readthedocs.io/ |
Package manager: | |
https://packagist.org/packages/mike42/gfx-php |
For a change to be accepted, it will first need to meet some basic technical criteria, such as passing existing unit tests, a style check, and not breaking any of the examples.
Secondly, it will need to pass a human review, to confirm that it improves the overall product. You are encouraged to submit changes which address one open issue, so that this review can be as constructive as possible.
Commands to use locally¶
To make code changes, fork the repository on GitHub, and set up your local copy with composer.
composer install
To run unit tests, execute:
php vendor/bin/phpunit --coverage-text
To test all examples:
mkdir -p tmp && (cd tmp && find ../example -name '*.php' -print0 | xargs -n 1 -0 sh -c 'echo $0; php $0 || exit 255')
To run a style check and fix formatting issues:
php vendor/bin/phpcs --standard=psr2 src/ -n
php vendor/bin/phpcbf --standard=psr2 src/ -n
Submitting changes¶
Changes should be submitted as a GitHub pull request to the master
branch.
Licensing considerations¶
You are not required to assign copyright for contributions to this project, but you do need ensure that your changes are suitable for release under the project’s copyleft license.
If you hold the copyright to the submitted code, then indicate this in your pull request.
If you are thinking of including code which you do not hold the copyright to, please post relevant details to the issue tracker first. Only works which are licensed under an LGPL-2.1-compatible license may be combined with gfx-php code.
Release process¶
Git tags are automatically reflected as releases in packagist.
Release numbers approximately follow semantic versioning, and do not follow a particular schedule.
Updates are not typically made to old releases.
API documentation¶
Codec namespace¶
Codec::Bmp namespace¶
BmpBitfieldDecoder¶
Qualified name: | Mike42\GfxPhp\Codec\Bmp\BmpBitfieldDecoder |
---|
-
class
BmpBitfieldDecoder
¶ -
__construct
(BmpColorBitfield $bitfields)¶ Parameters: - $bitfields (BmpColorBitfield) –
-
mixChannel
(int $value1, int $value2, int $amount)¶ Parameters: - $value1 (int) –
- $value2 (int) –
- $amount (int) –
-
read16bit
(array $inpBytes)¶ Parameters: - $inpBytes (array) –
-
read32bit
(array $inpBytes)¶ Parameters: - $inpBytes (array) –
-
BmpColorBitfield¶
Hold color mask information
Qualified name: | Mike42\GfxPhp\Codec\Bmp\BmpColorBitfield |
---|
-
class
BmpColorBitfield
¶ -
__construct
(BmpColorMask $red, BmpColorMask $green, BmpColorMask $blue, BmpColorMask $alpha)¶ Parameters: - $red (BmpColorMask) –
- $green (BmpColorMask) –
- $blue (BmpColorMask) –
- $alpha (BmpColorMask) –
-
getAlpha
()¶
-
getBlue
()¶
-
getGreen
()¶
-
getRed
()¶
-
static
from16bitDefaults
¶
-
static
from32bitDefaults
¶
-
static
fromRgba
(int $r, int $g, int $b, int $a)¶ Parameters: - $r (int) –
- $g (int) –
- $b (int) –
- $a (int) –
-
BmpColorMask¶
Qualified name: | Mike42\GfxPhp\Codec\Bmp\BmpColorMask |
---|
BmpFile¶
Qualified name: | Mike42\GfxPhp\Codec\Bmp\BmpFile |
---|
-
class
BmpFile
¶ -
__construct
(BmpFileHeader $fileHeader, BmpInfoHeader $infoHeader, array $data, array $palette)¶ Parameters: - $fileHeader (BmpFileHeader) –
- $infoHeader (BmpInfoHeader) –
- $data (array) –
- $palette (array) –
-
toRasterImage
()¶
-
static
fromBinary
(DataInputStream $data)¶ Parameters: - $data (DataInputStream) –
-
static
transformRevString
(& $item, $key)¶ Parameters: - $item (&) –
- $key –
-
BmpFileHeader¶
Qualified name: | Mike42\GfxPhp\Codec\Bmp\BmpFileHeader |
---|
-
class
BmpFileHeader
¶ -
__construct
(string $fileType, int $size, int $offset)¶ Parameters: - $fileType (string) –
- $size (int) –
- $offset (int) –
-
static
fromBinary
(DataInputStream $data)¶ Parameters: - $data (DataInputStream) –
-
BmpInfoHeader¶
Qualified name: | Mike42\GfxPhp\Codec\Bmp\BmpInfoHeader |
---|
-
class
BmpInfoHeader
¶ -
__construct
(int $headerSize, int $width, int $height, int $planes, int $bpp[, int $compression, int $compressedSize, int $horizontalRes, int $verticalRes, int $colors, int $importantColors, int $redMask, int $greenMask, int $blueMask, int $alphaMask, int $csType, array $endpoint, array $gamma, int $intent, int $profileData, int $profileSize])¶ Parameters: - $headerSize (int) –
- $width (int) –
- $height (int) –
- $planes (int) –
- $bpp (int) –
- $compression (int) – Default:
0
- $compressedSize (int) – Default:
0
- $horizontalRes (int) – Default:
0
- $verticalRes (int) – Default:
0
- $colors (int) – Default:
0
- $importantColors (int) – Default:
0
- $redMask (int) – Default:
0
- $greenMask (int) – Default:
0
- $blueMask (int) – Default:
0
- $alphaMask (int) – Default:
0
- $csType (int) – Default:
0
- $endpoint (array) – Default:
[]
- $gamma (array) – Default:
[]
- $intent (int) – Default:
0
- $profileData (int) – Default:
0
- $profileSize (int) – Default:
0
-
static
fromBinary
(DataInputStream $data)¶ Parameters: - $data (DataInputStream) –
-
Rle4Decoder¶
Qualified name: | Mike42\GfxPhp\Codec\Bmp\Rle4Decoder |
---|
Rle8Decoder¶
Qualified name: | Mike42\GfxPhp\Codec\Bmp\Rle8Decoder |
---|
RleCanvas¶
2D canvas for writing RLE-encoded BMP data into. A cursor is moved based on the commands issued, and an Exception is thrown if the data goes outside the canvas boundary, or if the data continues after endOfBitmap is called.
Qualified name: | Mike42\GfxPhp\Codec\Bmp\RleCanvas |
---|
-
class
RleCanvas
¶ -
__construct
(int $width, int $height)¶ Parameters: - $width (int) –
- $height (int) –
-
absolute
(array $values)¶ Parameters: - $values (array) –
-
delta
(int $deltaX, int $deltaY)¶ Parameters: - $deltaX (int) –
- $deltaY (int) –
-
endOfBitmap
()¶
-
endOfLine
()¶
-
getContents
()¶
-
repeat
(int $val, int $times)¶ Parameters: - $val (int) –
- $times (int) –
-
set
(int $val)¶ Parameters: - $val (int) –
-
Codec::Common namespace¶
DataBlobInputStream¶
Qualified name: | Mike42\GfxPhp\Codec\Common\DataBlobInputStream |
---|---|
Implements: | DataInputStream |
-
class
DataBlobInputStream
¶ -
__construct
(string $data)¶ Parameters: - $data (string) –
-
advance
(int $bytes)¶ Parameters: - $bytes (int) –
-
isEof
()¶
-
peek
(int $bytes)¶ Parameters: - $bytes (int) –
-
read
(int $bytes)¶ Parameters: - $bytes (int) –
-
static
fromBlob
(string $blob)¶ Parameters: - $blob (string) –
-
static
fromFilename
(string $filename)¶ Parameters: - $filename (string) –
-
Codec::Gif namespace¶
GifApplicationExt¶
Qualified name: | Mike42\GfxPhp\Codec\Gif\GifApplicationExt |
---|
GifColorTable¶
Qualified name: | Mike42\GfxPhp\Codec\Gif\GifColorTable |
---|
GifCommentExt¶
Qualified name: | Mike42\GfxPhp\Codec\Gif\GifCommentExt |
---|
-
class
GifCommentExt
¶ -
__construct
(array $data)¶ Parameters: - $data (array) –
-
getData
()¶
-
static
fromBin
(DataInputStream $in)¶ Parameters: - $in (DataInputStream) –
-
GifData¶
Qualified name: | Mike42\GfxPhp\Codec\Gif\GifData |
---|
-
class
GifData
¶ -
__construct
([])¶ Parameters: - $graphicsBlock (GifGraphicsBlock) – Default:
null
- $specialPurposeBlock (GifSpecialPurposeBlock) – Default:
null
- $unrecognisedBlock (GifUnknownExt) – Default:
null
- $graphicsBlock (GifGraphicsBlock) – Default:
-
getGraphicsBlock
()¶
-
getSpecialPurposeBlock
()¶
-
getUnrecognisedBlock
()¶
-
static
fromBin
(DataInputStream $in)¶ Parameters: - $in (DataInputStream) –
-
static
readDataSubBlocks
(DataInputStream $in)¶ Parameters: - $in (DataInputStream) –
-
GifDataStream¶
Qualified name: | Mike42\GfxPhp\Codec\Gif\GifDataStream |
---|
-
class
GifDataStream
¶ -
toRasterImage
([])¶ Parameters: - $imageIndex (int) – Default:
0
- $imageIndex (int) – Default:
-
static
fromBinary
(DataInputStream $data)¶ Parameters: - $data (DataInputStream) –
-
GifGraphicControlExt¶
Qualified name: | Mike42\GfxPhp\Codec\Gif\GifGraphicControlExt |
---|
-
class
GifGraphicControlExt
¶ -
__construct
(int $disposalMethod, bool $hasUserInputFlag, bool $hasTransparentColor, int $delayTime, int $transparentColorIndex)¶ Parameters: - $disposalMethod (int) –
- $hasUserInputFlag (bool) –
- $hasTransparentColor (bool) –
- $delayTime (int) –
- $transparentColorIndex (int) –
-
getDelayTime
()¶
-
getDisposalMethod
()¶
-
getTransparentColorIndex
()¶
-
hasTransparentColor
()¶
-
hasUserInputFlag
()¶
-
static
fromBin
(DataInputStream $in)¶ Parameters: - $in (DataInputStream) –
-
GifGraphicsBlock¶
Qualified name: | Mike42\GfxPhp\Codec\Gif\GifGraphicsBlock |
---|
-
class
GifGraphicsBlock
¶ -
__construct
([])¶ Parameters: - $graphicControlExt (GifGraphicControlExt) – Default:
null
- $tableBasedImage (GifTableBasedImage) – Default:
null
- $plaintextExt (GifPlaintextExt) – Default:
null
- $graphicControlExt (GifGraphicControlExt) – Default:
-
getGraphicControlExt
()¶
-
getPlaintextExt
()¶
-
getTableBasedImage
()¶
-
static
fromBin
(DataInputStream $in)¶ Parameters: - $in (DataInputStream) –
-
GifImageDescriptor¶
Qualified name: | Mike42\GfxPhp\Codec\Gif\GifImageDescriptor |
---|
-
class
GifImageDescriptor
¶ -
__construct
(int $left, int $top, int $width, int $height, bool $hasLocalColorTable, bool $isInterlaced, bool $hasSortedLocalColorTable, int $localColorTableSize)¶ Parameters: - $left (int) –
- $top (int) –
- $width (int) –
- $height (int) –
- $hasLocalColorTable (bool) –
- $isInterlaced (bool) –
- $hasSortedLocalColorTable (bool) –
- $localColorTableSize (int) –
-
getHeight
()¶
-
getLeft
()¶
-
getLocalColorTableSize
()¶
-
getTop
()¶
-
getWidth
()¶
-
hasLocalColorTable
()¶
-
hasSortedLocalColorTable
()¶
-
isInterlaced
()¶
-
static
fromBin
(DataInputStream $in)¶ Parameters: - $in (DataInputStream) –
-
GifLogicalScreen¶
Qualified name: | Mike42\GfxPhp\Codec\Gif\GifLogicalScreen |
---|
-
class
GifLogicalScreen
¶ -
__construct
(GifLogicalScreenDescriptor $logicalScreenDescriptor[, GifColorTable $globalColorTable])¶ Parameters: - $logicalScreenDescriptor (GifLogicalScreenDescriptor) –
- $globalColorTable (GifColorTable) – Default:
null
-
getGlobalColorTable
()¶
-
getLogicalScreenDescriptor
()¶
-
static
fromBin
(DataInputStream $data)¶ Parameters: - $data (DataInputStream) –
-
GifLogicalScreenDescriptor¶
Qualified name: | Mike42\GfxPhp\Codec\Gif\GifLogicalScreenDescriptor |
---|
-
class
GifLogicalScreenDescriptor
¶ -
__construct
(int $width, int $height, bool $hasGlobalColorTable, int $colorResolution, bool $hasSortedGlobalColorTable, int $globalColorTableSize, int $backgroundColorIndex, int $pixelAspectRatio)¶ Parameters: - $width (int) –
- $height (int) –
- $hasGlobalColorTable (bool) –
- $colorResolution (int) –
- $hasSortedGlobalColorTable (bool) –
- $globalColorTableSize (int) –
- $backgroundColorIndex (int) –
- $pixelAspectRatio (int) –
-
getBackgroundColorIndex
()¶
-
getColorResolution
()¶
-
getGlobalColorTableSize
()¶
-
getHeight
()¶
-
getPixelAspectRatio
()¶
-
getWidth
()¶
-
hasGlobalColorTable
()¶
-
hasSortedGlobalColorTabled
()¶
-
static
fromBin
(DataInputStream $in)¶ Parameters: - $in (DataInputStream) –
-
GifPlaintextExt¶
Qualified name: | Mike42\GfxPhp\Codec\Gif\GifPlaintextExt |
---|
GifSpecialPurposeBlock¶
Qualified name: | Mike42\GfxPhp\Codec\Gif\GifSpecialPurposeBlock |
---|
-
class
GifSpecialPurposeBlock
¶ -
__construct
([])¶ Parameters: - $applicationExt (GifApplicationExt) – Default:
null
- $commentExt (GifCommentExt) – Default:
null
- $applicationExt (GifApplicationExt) – Default:
-
getApplicationExt
()¶
-
getCommentExt
()¶
-
GifTableBasedImage¶
Qualified name: | Mike42\GfxPhp\Codec\Gif\GifTableBasedImage |
---|
-
class
GifTableBasedImage
¶ -
__construct
(GifImageDescriptor $imageDescriptor, int $lzqMinSize, array $dataSubBlocks[, GifColorTable $localColorTable])¶ Parameters: - $imageDescriptor (GifImageDescriptor) –
- $lzqMinSize (int) –
- $dataSubBlocks (array) –
- $localColorTable (GifColorTable) – Default:
null
-
getDataSubBlocks
()¶
-
getImageDescriptor
()¶
-
getLocalColorTable
()¶
-
getLzqMinSize
()¶
-
static
fromBin
(DataInputStream $in)¶ Parameters: - $in (DataInputStream) –
-
GifUnknownExt¶
Qualified name: | Mike42\GfxPhp\Codec\Gif\GifUnknownExt |
---|
Codec::Png namespace¶
FilterDecoder¶
Qualified name: | Mike42\GfxPhp\Codec\Png\FilterDecoder |
---|
-
class
FilterDecoder
¶ -
unfilterImage
(string $binData, int $scanlineBytes, int $channels, int $bitDepth)¶ Parameters: - $binData (string) –
- $scanlineBytes (int) –
- $channels (int) –
- $bitDepth (int) –
-
unfilterScanline
(array $currentFiltered, array $prior, int $filterType, int $bpp)¶ Unfilter an individual scanline
Parameters: - $currentFiltered (array) –
- $prior (array) –
- $filterType (int) –
- $bpp (int) –
-
InterlaceDecoder¶
Qualified name: | Mike42\GfxPhp\Codec\Png\InterlaceDecoder |
---|
-
class
InterlaceDecoder
¶ -
__construct
(FilterDecoder $filterDecoder)¶ Parameters: - $filterDecoder (FilterDecoder) –
-
PngChunk¶
Qualified name: | Mike42\GfxPhp\Codec\Png\PngChunk |
---|
PngHeader¶
Qualified name: | Mike42\GfxPhp\Codec\Png\PngHeader |
---|
-
class
PngHeader
¶ -
__construct
(int $width, int $height, int $bitDepth, int $colorType, int $compression, int $filter, int $interlace)¶ Parameters: - $width (int) –
- $height (int) –
- $bitDepth (int) –
- $colorType (int) –
- $compression (int) –
- $filter (int) –
- $interlace (int) –
-
allowsPalette
()¶
-
getBitDepth
()¶
-
getChannels
()¶
-
getColorType
()¶
-
getCompresssion
()¶
-
getFilter
()¶
-
getHeight
()¶
-
getInterlace
()¶
-
getWidth
()¶
-
requiresPalette
()¶
-
toString
()¶
-
PngImage¶
Qualified name: | Mike42\GfxPhp\Codec\Png\PngImage |
---|
-
class
PngImage
¶ -
toRasterImage
()¶
-
static
combineBytes16Bpp
(array $in)¶ Takes 8-bit samples, and produces half as many 16-bit samples.
Parameters: - $in (array) –
-
static
expandBytes1Bpp
(array $in, int $width)¶ Takes 8-bit samples, and produces eight times as many 1-bit samples, dropping padding bits along the way.
Parameters: - $in (array) –
- $width (int) –
-
static
expandBytes2Bpp
(array $in, int $width)¶ Takes 8-bit samples, and produces four times as many 2-bit samples, dropping padding bits along the way.
Parameters: - $in (array) –
- $width (int) –
-
static
expandBytes4Bpp
(array $in, int $width)¶ Takes 8-bit samples, and produces twice as many 4-bit samples, dropping padding bits along the way.
Parameters: - $in (array) –
- $width (int) –
-
static
fromBinary
(DataInputStream $data)¶ Parameters: - $data (DataInputStream) –
-
BmpCodec¶
Qualified name: | Mike42\GfxPhp\Codec\BmpCodec |
---|---|
Implements: | ImageEncoder , ImageDecoder |
GifCodec¶
Qualified name: | Mike42\GfxPhp\Codec\GifCodec |
---|---|
Implements: | ImageEncoder , ImageDecoder |
ImageCodec¶
Qualified name: | Mike42\GfxPhp\Codec\ImageCodec |
---|
-
class
ImageCodec
¶ -
__construct
(array $encoders, array $decoders)¶ Parameters: - $encoders (array) –
- $decoders (array) –
-
getDecoderForFormat
(string $format)¶ Parameters: - $format (string) –
-
getEncoderForFormat
(string $format)¶ Parameters: - $format (string) –
-
identify
(string $blob)¶ Parameters: - $blob (string) –
-
static
getInstance
¶
-
ImageDecoder¶
Qualified name: | Mike42\GfxPhp\Codec\ImageDecoder |
---|
ImageEncoder¶
Qualified name: | Mike42\GfxPhp\Codec\ImageEncoder |
---|
-
interface
ImageEncoder
¶ -
encode
(RasterImage $image, string $format)¶ Parameters: - $image (RasterImage) –
- $format (string) –
-
getEncodeFormats
()¶
-
PngCodec¶
Qualified name: | Mike42\GfxPhp\Codec\PngCodec |
---|---|
Implements: | ImageEncoder , ImageDecoder |
-
class
PngCodec
¶ -
decode
(string $blob)¶ Parameters: - $blob (string) –
-
encode
(RasterImage $image, string $format)¶ Parameters: - $image (RasterImage) –
- $format (string) –
-
encodeRgb
(RgbRasterImage $image)¶ Parameters: - $image (RgbRasterImage) –
-
getDecodeFormats
()¶
-
getEncodeFormats
()¶
-
identify
(string $blob)¶ Parameters: - $blob (string) –
-
static
getInstance
¶
-
PnmCodec¶
Qualified name: | Mike42\GfxPhp\Codec\PnmCodec |
---|---|
Implements: | ImageDecoder , ImageEncoder |
WbmpCodec¶
Qualified name: | Mike42\GfxPhp\Codec\WbmpCodec |
---|---|
Implements: | ImageDecoder , ImageEncoder |
-
class
WbmpCodec
¶ -
decode
(string $blob)¶ Parameters: - $blob (string) –
-
encode
(RasterImage $image, string $format)¶ Parameters: - $image (RasterImage) –
- $format (string) –
-
getDecodeFormats
()¶
-
getEncodeFormats
()¶
-
identify
(string $blob)¶ Parameters: - $blob (string) –
-
readInt
(DataBlobInputStream $data)¶ Parameters: - $data (DataBlobInputStream) –
-
writeInt
(int $val)¶ Parameters: - $val (int) –
-
static
getInstance
¶
-
Util namespace¶
AbstractLzwDictionary¶
Qualified name: | Mike42\GfxPhp\Util\AbstractLzwDictionary |
---|
LzwCompression¶
Utility classes to decode or encode entire strings.
Qualified name: | Mike42\GfxPhp\Util\LzwCompression |
---|
LzwDecodeBuffer¶
Treat incoming string as a stream of bits
Qualified name: | Mike42\GfxPhp\Util\LzwDecodeBuffer |
---|
LzwDecodeDictionary¶
Qualified name: | Mike42\GfxPhp\Util\LzwDecodeDictionary |
---|---|
Extends: | AbstractLzwDictionary |
-
class
LzwDecodeDictionary
¶ -
__construct
(int $minCodeSize)¶ Parameters: - $minCodeSize (int) –
-
add
(string $entry)¶ Parameters: - $entry (string) –
-
clear
()¶
-
contains
(int $code)¶ Parameters: - $code (int) –
-
get
(int $code)¶ Parameters: - $code (int) –
-
getClearCode
() → number¶ Returns: number –
-
getEodCode
() → number¶ Returns: number –
-
getSize
()¶
-
LzwEncodeBuffer¶
Qualified name: | Mike42\GfxPhp\Util\LzwEncodeBuffer |
---|
LzwEncodeDictionary¶
Qualified name: | Mike42\GfxPhp\Util\LzwEncodeDictionary |
---|---|
Extends: | AbstractLzwDictionary |
-
class
LzwEncodeDictionary
¶ -
__construct
(int $minCodeSize)¶ Parameters: - $minCodeSize (int) –
-
add
(string $entry)¶ Parameters: - $entry (string) –
-
clear
()¶
-
contains
(string $code)¶ Parameters: - $code (string) –
-
get
(string $code)¶ Parameters: - $code (string) –
-
getClearCode
() → number¶ Returns: number –
-
getEodCode
() → number¶ Returns: number –
-
getSize
()¶
-
AbstractRasterImage¶
Qualified name: | Mike42\GfxPhp\AbstractRasterImage |
---|---|
Implements: | RasterImage |
-
class
AbstractRasterImage
¶ -
compose
(RasterImage $source, int $startX, int $startY, int $destStartX, int $destStartY, int $width, int $height)¶ Parameters: - $source (RasterImage) –
- $startX (int) –
- $startY (int) –
- $destStartX (int) –
- $destStartY (int) –
- $width (int) –
- $height (int) –
-
getHeight
() → int¶ Get the height of the image in pixels.
Returns: int – The height of the image in pixels.
-
getPixel
(int $x, int $y) → int¶ Get the value of a given pixel. The meaning of the integer value of this pixel is implementation-dependent.
Parameters: - $x (int) – X co-ordinate
- $y (int) – Y co-ordinate
Returns: int – The value of the pixel at ($x, $y).
-
getRasterData
() → string¶ Get a binary string representing the underlying image data. The formatting of this data is implementation-dependent.
Returns: string – A binary string representation of the raster data for this image.
-
getWidth
() → int¶ Get the width of the image in pixels.
Returns: int – The width of the image in pixels.
-
rect
($startX, $startY, $width, $height[, $filled, $outline, $fill])¶ Produce a rectangle with the given properties.
Parameters: - $startX –
- $startY –
- $width –
- $height –
- $filled – Default:
false
- $outline – Default:
1
- $fill (int) – Default:
1
-
scale
(int $width, int $height) → RasterImage¶ Produce a new
RasterImage
based on this one. The new image will be scaled to the requested dimensions via resampling.Parameters: - $width (int) – The width of the returned image.
- $height (int) – The height of the returned image.
Returns: RasterImage
– A scaled version of the image.
-
setPixel
(int $x, int $y, int $value)¶ Set the value of a given pixel.
Parameters: - $x (int) – X co-ordinate
- $y (int) – Y co-ordinate
- $value (int) – Value to set
-
subImage
(int $startX, int $startY, int $width, int $height)¶ Parameters: - $startX (int) –
- $startY (int) –
- $width (int) –
- $height (int) –
-
toBlackAndWhite
() → BlackAndWhiteRasterImage¶ Produce a copy of this
RasterImage
in a pure black-and-white colorspace.Returns: BlackAndWhiteRasterImage
– a black and white version of the image.
-
toGrayscale
() → GrayscaleRasterImage¶ Produce a copy of this
RasterImage
in a monochrome colorspace.Returns: GrayscaleRasterImage
– A monochrome version of the image.
-
toIndexed
() → IndexedRasterImage¶ Produce a copy of this
RasterImage
as an indexed image with an associated palette of unique colors.Returns: IndexedRasterImage
– An paletted version of the image.
-
toRgb
() → RgbRasterImage¶ Produce a copy of this
RasterImage
in the RGB colorspace.Returns: RgbRasterImage
– An RGB version of the image.
-
write
(string $filename)¶ Write the image to a file. The output format is determined by the file extension.
Parameters: - $filename (string) – Filename to write to.
-
BlackAndWhiteRasterImage¶
Small implementation of basic raster operations on PBM files to support creation of placeholder glyphs
Qualified name: | Mike42\GfxPhp\BlackAndWhiteRasterImage |
---|---|
Extends: | AbstractRasterImage |
-
class
BlackAndWhiteRasterImage
¶ -
clear
()¶
-
compose
(RasterImage $source, int $startX, int $startY, int $destStartX, int $destStartY, int $width, int $height)¶ Parameters: - $source (RasterImage) –
- $startX (int) –
- $startY (int) –
- $destStartX (int) –
- $destStartY (int) –
- $width (int) –
- $height (int) –
-
getHeight
() → int¶ Get the height of the image in pixels.
Returns: int – The height of the image in pixels.
-
getPixel
(int $x, int $y) → int¶ Get the value of a given pixel. The meaning of the integer value of this pixel is implementation-dependent.
Parameters: - $x (int) – X co-ordinate
- $y (int) – Y co-ordinate
Returns: int – The value of the pixel at ($x, $y).
-
getRasterData
() → string¶ Get a binary string representing the underlying image data. The formatting of this data is implementation-dependent.
Returns: string – A binary string representation of the raster data for this image.
-
getWidth
() → int¶ Get the width of the image in pixels.
Returns: int – The width of the image in pixels.
-
invert
()¶
-
mapColor
(int $srcColor, RasterImage $destImage)¶ Parameters: - $srcColor (int) –
- $destImage (RasterImage) –
-
rect
($startX, $startY, $width, $height[, $filled, $outline, $fill])¶ Produce a rectangle with the given properties.
Parameters: - $startX –
- $startY –
- $width –
- $height –
- $filled – Default:
false
- $outline – Default:
1
- $fill (int) – Default:
1
-
scale
(int $width, int $height) → RasterImage¶ Produce a new
RasterImage
based on this one. The new image will be scaled to the requested dimensions via resampling.Parameters: - $width (int) – The width of the returned image.
- $height (int) – The height of the returned image.
Returns: RasterImage
– A scaled version of the image.
-
setPixel
(int $x, int $y, int $value)¶ Set the value of a given pixel.
Parameters: - $x (int) – X co-ordinate
- $y (int) – Y co-ordinate
- $value (int) – Value to set
-
subImage
(int $startX, int $startY, int $width, int $height)¶ Parameters: - $startX (int) –
- $startY (int) –
- $width (int) –
- $height (int) –
-
toBlackAndWhite
() → BlackAndWhiteRasterImage¶ Produce a copy of this
RasterImage
in a pure black-and-white colorspace.Returns: BlackAndWhiteRasterImage
– a black and white version of the image.
-
toGrayscale
() → GrayscaleRasterImage¶ Produce a copy of this
RasterImage
in a monochrome colorspace.Returns: GrayscaleRasterImage
– A monochrome version of the image.
-
toIndexed
() → IndexedRasterImage¶ Produce a copy of this
RasterImage
as an indexed image with an associated palette of unique colors.Returns: IndexedRasterImage
– An paletted version of the image.
-
toRgb
() → RgbRasterImage¶ Produce a copy of this
RasterImage
in the RGB colorspace.Returns: RgbRasterImage
– An RGB version of the image.
-
toString
()¶
-
write
(string $filename)¶ Write the image to a file. The output format is determined by the file extension.
Parameters: - $filename (string) – Filename to write to.
-
static
create
($width, $height[, array $data])¶ Parameters: - $width –
- $height –
- $data (array) – Default:
null
-
GrayscaleRasterImage¶
Qualified name: | Mike42\GfxPhp\GrayscaleRasterImage |
---|---|
Extends: | AbstractRasterImage |
-
class
GrayscaleRasterImage
¶ -
compose
(RasterImage $source, int $startX, int $startY, int $destStartX, int $destStartY, int $width, int $height)¶ Parameters: - $source (RasterImage) –
- $startX (int) –
- $startY (int) –
- $destStartX (int) –
- $destStartY (int) –
- $width (int) –
- $height (int) –
-
getHeight
() → int¶ Get the height of the image in pixels.
Returns: int – The height of the image in pixels.
-
getMaxVal
()¶
-
getPixel
(int $x, int $y) → int¶ Get the value of a given pixel. The meaning of the integer value of this pixel is implementation-dependent.
Parameters: - $x (int) – X co-ordinate
- $y (int) – Y co-ordinate
Returns: int – The value of the pixel at ($x, $y).
-
getRasterData
() → string¶ Get a binary string representing the underlying image data. The formatting of this data is implementation-dependent.
Returns: string – A binary string representation of the raster data for this image.
-
getWidth
() → int¶ Get the width of the image in pixels.
Returns: int – The width of the image in pixels.
-
mapColor
(int $srcColor, RasterImage $destImage)¶ Parameters: - $srcColor (int) –
- $destImage (RasterImage) –
-
rect
($startX, $startY, $width, $height[, $filled, $outline, $fill])¶ Produce a rectangle with the given properties.
Parameters: - $startX –
- $startY –
- $width –
- $height –
- $filled – Default:
false
- $outline – Default:
1
- $fill (int) – Default:
1
-
scale
(int $width, int $height) → RasterImage¶ Produce a new
RasterImage
based on this one. The new image will be scaled to the requested dimensions via resampling.Parameters: - $width (int) – The width of the returned image.
- $height (int) – The height of the returned image.
Returns: RasterImage
– A scaled version of the image.
-
setPixel
(int $x, int $y, int $value)¶ Set the value of a given pixel.
Parameters: - $x (int) – X co-ordinate
- $y (int) – Y co-ordinate
- $value (int) – Value to set
-
subImage
(int $startX, int $startY, int $width, int $height)¶ Parameters: - $startX (int) –
- $startY (int) –
- $width (int) –
- $height (int) –
-
toBlackAndWhite
() → BlackAndWhiteRasterImage¶ Produce a copy of this
RasterImage
in a pure black-and-white colorspace.Returns: BlackAndWhiteRasterImage
– a black and white version of the image.
-
toGrayscale
() → GrayscaleRasterImage¶ Produce a copy of this
RasterImage
in a monochrome colorspace.Returns: GrayscaleRasterImage
– A monochrome version of the image.
-
toIndexed
() → IndexedRasterImage¶ Produce a copy of this
RasterImage
as an indexed image with an associated palette of unique colors.Returns: IndexedRasterImage
– An paletted version of the image.
-
toRgb
() → RgbRasterImage¶ Produce a copy of this
RasterImage
in the RGB colorspace.Returns: RgbRasterImage
– An RGB version of the image.
-
write
(string $filename)¶ Write the image to a file. The output format is determined by the file extension.
Parameters: - $filename (string) – Filename to write to.
-
static
create
($width, $height[, array $data, $maxVal])¶ Parameters: - $width –
- $height –
- $data (array) – Default:
null
- $maxVal – Default:
255
-
Image¶
Qualified name: | Mike42\GfxPhp\Image |
---|
-
class
Image
¶ -
static
create
(int $width, int $height[, int $impl])¶ Parameters: - $width (int) –
- $height (int) –
- $impl (int) – Default:
self::IMAGE_BLACK_WHITE
-
static
fromBlob
(string $blob[, string $filename])¶ Parameters: - $blob (string) –
- $filename (string) – Default:
null
-
static
fromFile
(string $filename)¶ Parameters: - $filename (string) –
-
static
IndexedRasterImage¶
Qualified name: | Mike42\GfxPhp\IndexedRasterImage |
---|---|
Extends: | AbstractRasterImage |
-
class
IndexedRasterImage
¶ -
allocateColor
(array $color)¶ Parameters: - $color (array) –
-
compose
(RasterImage $source, int $startX, int $startY, int $destStartX, int $destStartY, int $width, int $height)¶ Parameters: - $source (RasterImage) –
- $startX (int) –
- $startY (int) –
- $destStartX (int) –
- $destStartY (int) –
- $width (int) –
- $height (int) –
-
deallocateColor
(array $color)¶ Parameters: - $color (array) –
-
getHeight
() → int¶ Get the height of the image in pixels.
Returns: int – The height of the image in pixels.
-
getMaxVal
()¶
-
getPalette
()¶
-
getPixel
(int $x, int $y) → int¶ Get the value of a given pixel. The meaning of the integer value of this pixel is implementation-dependent.
Parameters: - $x (int) – X co-ordinate
- $y (int) – Y co-ordinate
Returns: int – The value of the pixel at ($x, $y).
-
getRasterData
() → string¶ Get a binary string representing the underlying image data. The formatting of this data is implementation-dependent.
Returns: string – A binary string representation of the raster data for this image.
-
getTransparentColor
()¶
-
getWidth
() → int¶ Get the width of the image in pixels.
Returns: int – The width of the image in pixels.
-
indexToRgb
(int $index)¶ Parameters: - $index (int) –
-
mapColor
(int $srcColor, RasterImage $destImage)¶ Parameters: - $srcColor (int) –
- $destImage (RasterImage) –
-
rect
($startX, $startY, $width, $height[, $filled, $outline, $fill])¶ Produce a rectangle with the given properties.
Parameters: - $startX –
- $startY –
- $width –
- $height –
- $filled – Default:
false
- $outline – Default:
1
- $fill (int) – Default:
1
-
rgbToIndex
(array $rgb)¶ Parameters: - $rgb (array) –
-
scale
(int $width, int $height) → RasterImage¶ Produce a new
RasterImage
based on this one. The new image will be scaled to the requested dimensions via resampling.Parameters: - $width (int) – The width of the returned image.
- $height (int) – The height of the returned image.
Returns: RasterImage
– A scaled version of the image.
-
setMaxVal
(int $maxVal)¶ Parameters: - $maxVal (int) –
-
setPalette
(array $palette)¶ Parameters: - $palette (array) –
-
setPixel
(int $x, int $y, int $value)¶ Set the value of a given pixel.
Parameters: - $x (int) – X co-ordinate
- $y (int) – Y co-ordinate
- $value (int) – Value to set
-
setTransparentColor
(int $color)¶ Parameters: - $color (int) –
-
subImage
(int $startX, int $startY, int $width, int $height)¶ Parameters: - $startX (int) –
- $startY (int) –
- $width (int) –
- $height (int) –
-
toBlackAndWhite
() → BlackAndWhiteRasterImage¶ Produce a copy of this
RasterImage
in a pure black-and-white colorspace.Returns: BlackAndWhiteRasterImage
– a black and white version of the image.
-
toGrayscale
() → GrayscaleRasterImage¶ Produce a copy of this
RasterImage
in a monochrome colorspace.Returns: GrayscaleRasterImage
– A monochrome version of the image.
-
toIndexed
() → IndexedRasterImage¶ Produce a copy of this
RasterImage
as an indexed image with an associated palette of unique colors.Returns: IndexedRasterImage
– An paletted version of the image.
-
toRgb
() → RgbRasterImage¶ Produce a copy of this
RasterImage
in the RGB colorspace.Returns: RgbRasterImage
– An RGB version of the image.
-
write
(string $filename)¶ Write the image to a file. The output format is determined by the file extension.
Parameters: - $filename (string) – Filename to write to.
-
static
create
(int $width, int $height[, array $data, array $palette, int $maxVal])¶ Parameters: - $width (int) –
- $height (int) –
- $data (array) – Default:
null
- $palette (array) – Default:
[]
- $maxVal (int) – Default:
255
-
PaletteGenerator¶
Qualified name: | Mike42\GfxPhp\PaletteGenerator |
---|
RasterImage¶
Generic interface to raster images.
Qualified name: | Mike42\GfxPhp\RasterImage |
---|
-
interface
RasterImage
¶ -
getHeight
() → int¶ Get the height of the image in pixels.
Returns: int – The height of the image in pixels.
-
getPixel
(int $x, int $y) → int¶ Get the value of a given pixel. The meaning of the integer value of this pixel is implementation-dependent.
Parameters: - $x (int) – X co-ordinate
- $y (int) – Y co-ordinate
Returns: int – The value of the pixel at ($x, $y).
-
getRasterData
() → string¶ Get a binary string representing the underlying image data. The formatting of this data is implementation-dependent.
Returns: string – A binary string representation of the raster data for this image.
-
getWidth
() → int¶ Get the width of the image in pixels.
Returns: int – The width of the image in pixels.
-
scale
(int $width, int $height) → RasterImage¶ Produce a new
RasterImage
based on this one. The new image will be scaled to the requested dimensions via resampling.Parameters: - $width (int) – The width of the returned image.
- $height (int) – The height of the returned image.
Returns: RasterImage
– A scaled version of the image.
-
setPixel
(int $x, int $y, int $value)¶ Set the value of a given pixel.
Parameters: - $x (int) – X co-ordinate
- $y (int) – Y co-ordinate
- $value (int) – Value to set
-
toBlackAndWhite
() → BlackAndWhiteRasterImage¶ Produce a copy of this
RasterImage
in a pure black-and-white colorspace.Returns: BlackAndWhiteRasterImage
– a black and white version of the image.
-
toGrayscale
() → GrayscaleRasterImage¶ Produce a copy of this
RasterImage
in a monochrome colorspace.Returns: GrayscaleRasterImage
– A monochrome version of the image.
-
toIndexed
() → IndexedRasterImage¶ Produce a copy of this
RasterImage
as an indexed image with an associated palette of unique colors.Returns: IndexedRasterImage
– An paletted version of the image.
-
toRgb
() → RgbRasterImage¶ Produce a copy of this
RasterImage
in the RGB colorspace.Returns: RgbRasterImage
– An RGB version of the image.
-
write
(string $filename)¶ Write the image to a file. The output format is determined by the file extension.
Parameters: - $filename (string) – Filename to write to.
-
RgbRasterImage¶
Qualified name: | Mike42\GfxPhp\RgbRasterImage |
---|---|
Extends: | AbstractRasterImage |
-
class
RgbRasterImage
¶ -
compose
(RasterImage $source, int $startX, int $startY, int $destStartX, int $destStartY, int $width, int $height)¶ Parameters: - $source (RasterImage) –
- $startX (int) –
- $startY (int) –
- $destStartX (int) –
- $destStartY (int) –
- $width (int) –
- $height (int) –
-
getHeight
() → int¶ Get the height of the image in pixels.
Returns: int – The height of the image in pixels.
-
getMaxVal
()¶
-
getPixel
(int $x, int $y) → int¶ Get the value of a given pixel. The meaning of the integer value of this pixel is implementation-dependent.
Parameters: - $x (int) – X co-ordinate
- $y (int) – Y co-ordinate
Returns: int – The value of the pixel at ($x, $y).
-
getRasterData
() → string¶ Get a binary string representing the underlying image data. The formatting of this data is implementation-dependent.
Returns: string – A binary string representation of the raster data for this image.
-
getWidth
() → int¶ Get the width of the image in pixels.
Returns: int – The width of the image in pixels.
-
indexToRgb
(int $val)¶ Parameters: - $val (int) –
-
mapColor
(int $srcColor, RasterImage $destImage)¶ Parameters: - $srcColor (int) –
- $destImage (RasterImage) –
-
rect
($startX, $startY, $width, $height[, $filled, $outline, $fill])¶ Produce a rectangle with the given properties.
Parameters: - $startX –
- $startY –
- $width –
- $height –
- $filled – Default:
false
- $outline – Default:
1
- $fill (int) – Default:
1
-
rgbToIndex
(array $val)¶ Parameters: - $val (array) –
-
scale
(int $width, int $height) → RasterImage¶ Produce a new
RasterImage
based on this one. The new image will be scaled to the requested dimensions via resampling.Parameters: - $width (int) – The width of the returned image.
- $height (int) – The height of the returned image.
Returns: RasterImage
– A scaled version of the image.
-
setPixel
(int $x, int $y, int $value)¶ Set the value of a given pixel.
Parameters: - $x (int) – X co-ordinate
- $y (int) – Y co-ordinate
- $value (int) – Value to set
-
subImage
(int $startX, int $startY, int $width, int $height)¶ Parameters: - $startX (int) –
- $startY (int) –
- $width (int) –
- $height (int) –
-
toBlackAndWhite
() → BlackAndWhiteRasterImage¶ Produce a copy of this
RasterImage
in a pure black-and-white colorspace.Returns: BlackAndWhiteRasterImage
– a black and white version of the image.
-
toGrayscale
() → GrayscaleRasterImage¶ Produce a copy of this
RasterImage
in a monochrome colorspace.Returns: GrayscaleRasterImage
– A monochrome version of the image.
-
toIndexed
() → IndexedRasterImage¶ Produce a copy of this
RasterImage
as an indexed image with an associated palette of unique colors.Returns: IndexedRasterImage
– An paletted version of the image.
-
toRgb
() → RgbRasterImage¶ Produce a copy of this
RasterImage
in the RGB colorspace.Returns: RgbRasterImage
– An RGB version of the image.
-
write
(string $filename)¶ Write the image to a file. The output format is determined by the file extension.
Parameters: - $filename (string) – Filename to write to.
-
static
convertDepth
(& $item, $key, array $data)¶ Parameters: - $item (&) –
- $key –
- $data (array) –
-
static
create
($width, $height[, array $data, $maxVal])¶ Parameters: - $width –
- $height –
- $data (array) – Default:
null
- $maxVal – Default:
255
-
static
intToRgb
($in)¶ Parameters: - $in –
-
static
rgbToInt
(int $r, int $g, int $b)¶ Parameters: - $r (int) –
- $g (int) –
- $b (int) –
-