GIF

Implements reader/writer for *.GIF-files. Animation is accessed from a sliding window of setting the required frame. Requires linking against the ncompress library for LZW support.

version(lzwsupport)

public

class GIF : Image , MultiImage {

struct Header;

struct ImageDescriptor;

static

enum ubyte extensionIntroducer;

struct GraphicsControlExtension;

class PlainTextExtension;

class ApplicationExtension;

protected protected

Header header;

protected protected

ImageDescriptor[] imageDescriptors;

}

Constructors

this this(): Empty constructor used by the loader

Members

Classes

ApplicationExtension class ApplicationExtension: Application extension block
PlainTextExtension class PlainTextExtension: Plain text extension of GIF89a

Static functions

load load(F file): Loads a *.gif file from a file

Static variables

extensionIntroducer enum ubyte extensionIntroducer;: Extension identifier

Structs

GraphicsControlExtension struct GraphicsControlExtension: Extension found in GIF89a versions
Header struct Header: Header for both 87a and 89a versions.
ImageDescriptor struct ImageDescriptor: Per image descriptor.

Variables

frames ubyte[] frames;: Undocumented in source.
header Header header;: Undocumented in source.
imageDescriptors ImageDescriptor[] imageDescriptors;: Undocumented in source.

Inherited Members

From Image

_palette IPalette _palette;: Contains palette data and information
_imageData IImageData _imageData;: Contains image data and information.
mod ubyte mod;: used for fast access of indexes DEPRECATED!
shift ubyte shift;: used for fast access of indexes DEPRECATED!
width uint width [@property getter]: Returns the width of the image in pixels.
height uint height [@property getter]: Returns the height of the image in pixels.
isIndexed bool isIndexed [@property getter]: Returns true if the image is indexed.
getBitdepth ubyte getBitdepth [@property getter]: Returns the number of bits used per sample.
getPaletteBitdepth ubyte getPaletteBitdepth [@property getter]: Returns the number of bits used per colormap entry.
getPixelFormat uint getPixelFormat [@property getter]: Returns the pixelformat of the image. See enumerator PixelFormat for more info.
getPalettePixelFormat uint getPalettePixelFormat [@property getter]: Returns the pixelformat of the palette. See enumerator PixelFormat for more info.
backgroundColorIndex int backgroundColorIndex [@property getter]: Returns the background color index if there's any. Returns -1 if there's no background color, -2 if background color is not indexed.
backgroundColor ARGB8888 backgroundColor [@property getter]: Returns the background color if there's any, or a default value otherwise.
getBitplanes ubyte getBitplanes(): Returns the number of planes the image have. Default is one.
palette IPalette palette(): Returns a palette range, which can be used to read the palette.
imageData IImageData imageData(): Returns the image data.
readPixel ARGB8888 readPixel(uint x, uint y): Reads a single 32bit pixel. If the image is indexed, a color lookup will be done.
readPalette ARGB8888 readPalette(size_t index): Looks up the index on the palette, then returns the color value as a 32 bit value.
flipVertical void flipVertical(): Flips the image on the vertical axis. Useful to set images to the correct top-left screen origin point.
flipHorizontal void flipHorizontal(): Flips the image on the vertical axis. Useful to set images to the correct top-left screen origin point.
topOrigin bool topOrigin(): Returns true if the image originates from the top
rightSideOrigin bool rightSideOrigin(): Returns true if the image originates from the right

From MultiImage

getCurrentImage uint getCurrentImage(): Returns which image is being set to be worked on.
setCurrentImage uint setCurrentImage(uint frame): Sets which image is being set to be worked on.
setStaticImage void setStaticImage(): Sets the current image to the static if available
nOfImages uint nOfImages(): Number of images in a given multi-image.
frameTime uint frameTime(): Returns the frame duration in hmsec if animation for the given frame. Returns 0 if not an animation.
isAnimation bool isAnimation(): Returns true if the multi-image is animated

GIF

Constructors

Members

Classes

Static functions

Static variables

Structs

Variables

Inherited Members

From Image

From MultiImage

Meta

Source