This class implements the Horde_Image:: API for PNG images. It mainly provides some utility functions, such as the ability to make pixels or solid images for now.

$Horde: framework/Image/Image/png.php,v 1.19.10.12 2009/01/06 15:23:12 jan Exp $

Copyright 2003-2009 The Horde Project (http://www.horde.org/)

See the enclosed file COPYING for license information (LGPL). If you did not receive this file, see http://www.fsf.org/copyleft/lgpl.html.

• author: Mike Cochrane <mike@graftonhall.co.nz>
• since: Horde 3.0

Located in /Image/Image/png.php (line 21)

Horde_Image
   |
   --Horde_Image_png

integer $_colorDepth = 8 (line 35)

Color depth (only 8 and 16 implemented).

integer $_colorType = 2 (line 42)

Color type (only 2 (true color) implemented).

integer $_compressionMethod = 0 (line 49)

Compression method (0 is the only current valid value).

integer $_filterMethod = 0 (line 56)

Filter method (0 is the only current valid value).

array $_img = array() (line 28)

The array of pixel data.

integer $_interlaceMethod = 0 (line 63)

Interlace method (only 0 (no interlace) implemented).

Inherited Variables

Inherited from Horde_Image

Horde_Image::$_background
Horde_Image::$_capabilities
Horde_Image::$_data
Horde_Image::$_height
Horde_Image::$_loadedEffects
Horde_Image::$_observers
Horde_Image::$_rgb
Horde_Image::$_tmpdir
Horde_Image::$_type
Horde_Image::$_width

Constructor Horde_Image_png (line 68)

PNG image constructor.

Horde_Image_png Horde_Image_png ( $params)

• $params

getContentType (line 77)

void getContentType ()

raw (line 87)

Return the raw data for this image.

• return: The raw image data.

string raw ()

---

Redefinition of:

Horde_Image::raw()

Returns the raw data for this image.

rectangle (line 122)

Draw a rectangle.

void rectangle (integer $x, integer $y, integer $width, integer $height, [string $color = 'black'], [string $fill = 'none'])

• integer $x: The left x-coordinate of the rectangle.
• integer $y: The top y-coordinate of the rectangle.
• integer $width: The width of the rectangle.
• integer $height: The height of the rectangle.
• string $color: The line color of the rectangle.
• string $fill: The color to fill the rectangle with.

reset (line 106)

Reset the image data.

void reset ()

---

Redefinition of:

Horde_Image::reset()

Reset the image data.

_Adler32 (line 234)

Calculate an Adler32 checksum for a string.

void _Adler32 ( $input)

• $input

_header (line 147)

Create the PNG file header.

void _header ()

_IDAT (line 173)

Create Image Data block.

void _IDAT ()

_IEND (line 164)

Create IEND block.

void _IEND ()

_IHDR (line 155)

Create Image Header block.

void _IHDR ()

_tEXt (line 212)

Create tEXt block.

void _tEXt ( $keyword,  $text)

• $keyword
• $text

_tIME (line 221)

Create last modified time block.

void _tIME ([ $date = null])

• $date

Inherited Methods

Inherited From Horde_Image

Horde_Image::Horde_Image()
Horde_Image::addEffect()
Horde_Image::addObserver()
Horde_Image::applyEffects()
Horde_Image::brightness()
Horde_Image::brush()
Horde_Image::display()
Horde_Image::factory()
Horde_Image::getCapabilities()
Horde_Image::getDimensions()
Horde_Image::getHexColor()
Horde_Image::getLink()
Horde_Image::getLoadedEffects()
Horde_Image::getRGB()
Horde_Image::hasCapability()
Horde_Image::headers()
Horde_Image::loadFile()
Horde_Image::loadString()
Horde_Image::modifyColor()
Horde_Image::moreIntenseColor()
Horde_Image::notifyObservers()
Horde_Image::raw()
Horde_Image::reset()
Horde_Image::singleton()
Horde_Image::toFile()