SetaPDF v2 API Reference

Index

\SetaPDF
1. Core
2. Core
  1. Image
  2. Image
    1. Gif
    2. Gif
      1. Block
        Extension
        AbstractBlock
        Header
        ImageDescriptor
        LogicalScreenDescriptor

SetaPDF_Core_Image_Gif_Block_LogicalScreenDescriptor Class representing a logical screen descriptor inside of a GIF.

File: /SetaPDF v2/Core/Image/Gif/Block/LogicalScreenDescriptor.php

Class hierarchy

SetaPDF_Core_Image_Gif_Block_AbstractBlock
- SetaPDF_Core_Image_Gif_Block_LogicalScreenDescriptor

Summary

Static Methods

createExtensionOrImageDescriptor()

Methods

__construct()

Properties

$backgroundColor
$colorResolution
$colorTable
$height
$pixelAspectRatio
$width

Properties

$backgroundColor

public int SetaPDF_Core_Image_Gif_Block_LogicalScreenDescriptor::$backgroundColor

The background color index.

$colorResolution

public int SetaPDF_Core_Image_Gif_Block_LogicalScreenDescriptor::$colorResolution

The color resolution.

Value used to hint the richness of the color table, even if entries are missing.

$colorTable

public null|array SetaPDF_Core_Image_Gif_Block_LogicalScreenDescriptor::$colorTable

The global color table.

$height

public int SetaPDF_Core_Image_Gif_Block_LogicalScreenDescriptor::$height

The image height.

$pixelAspectRatio

public string SetaPDF_Core_Image_Gif_Block_LogicalScreenDescriptor::$pixelAspectRatio

The pixel aspect ratio.

Factor used to compute an approximation.

$width

public int SetaPDF_Core_Image_Gif_Block_LogicalScreenDescriptor::$width

The image width.

Static Methods

createExtensionOrImageDescriptor()

public static SetaPDF_Core_Image_Gif_Block_AbstractBlock::createExtensionOrImageDescriptor (

SetaPDF_Core_Reader_Binary $reader

): bool|SetaPDF_Core_Image_Gif_Block_Extension_Application|SetaPDF_Core_Image_Gif_Block_Extension_Comment|SetaPDF_Core_Image_Gif_Block_Extension_GraphicControl|SetaPDF_Core_Image_Gif_Block_Extension_PlainText|SetaPDF_Core_Image_Gif_Block_ImageDescriptor

Creates a new block instance (extension or image descriptor).

Parameters

$reader : SetaPDF_Core_Reader_Binary

Exceptions

Throws SetaPDF_Core_Image_Exception

Methods

__construct()

public SetaPDF_Core_Image_Gif_Block_LogicalScreenDescriptor::__construct (

SetaPDF_Core_Reader_Binary $reader

)

The constructor.

Parameters

$reader : SetaPDF_Core_Reader_Binary

Exceptions

Throws SetaPDF_Core_Image_Exception