FLTK 1.4.0: Fl_Anim_GIF_Image Class Reference

The Fl_Anim_GIF_Image class supports loading, caching, and drawing of animated Compuserve GIF^SM images. More...

Inheritance diagram for Fl_Anim_GIF_Image:

Public Types
enum	Flags { DONT_START = 1 , DONT_RESIZE_CANVAS = 2 , DONT_SET_AS_IMAGE = 4 , OPTIMIZE_MEMORY = 8 , LOG_FLAG = 64 , DEBUG_FLAG = 128 }
	When opening an Fl_Anim_GIF_Image there are some options that can be passed in a `flags` value. More...

Public Member Functions
Fl_Widget *	canvas () const
	Gets the current widget, that is used to display the frame images. More...

void	canvas (Fl_Widget *canvas, unsigned short flags=0)
	Link the image back to a widget for automated animation. More...

int	canvas_h () const
	Return the height of the animation canvas. More...

int	canvas_w () const
	Return the width of the animation canvas. More...

void	color_average (Fl_Color c, float i) FL_OVERRIDE
	Applies a color average to all frames. More...

Fl_Image *	copy () const

Fl_Image *	copy (int W, int H) const FL_OVERRIDE
	Copy and resize the animation frames. More...

int	debug () const

void	delay (int frame, double delay)
	Set the delay of frame `[0-frames() -1]` in seconds. More...

double	delay (int frame_) const
	Return the delay of frame `[0-frames() -1]` in seconds. More...

void	desaturate () FL_OVERRIDE
	Desaturate to all frames of the animation. More...

void	draw (int x, int y, int w, int h, int cx=0, int cy=0) FL_OVERRIDE
	Draw the current frame of the animation. More...

	Fl_Anim_GIF_Image ()
	Create an empty animated GIF image shell.

	Fl_Anim_GIF_Image (const char filename, Fl_Widget canvas=0, unsigned short flags=0)
	Load an animated GIF image from a file. More...

	Fl_Anim_GIF_Image (const char imagename, const unsigned char data, const size_t length, Fl_Widget *canvas=0, unsigned short flags=0)
	Load an animated GIF image from memory. More...

int	frame () const
	Return the current frame. More...

void	frame (int frame)
	Set the current frame. More...

int	frame_h (int frame) const
	Return the frame dimensions of a frame. More...

bool	frame_uncache () const
	Return the active frame_uncache() setting. More...

void	frame_uncache (bool uncache)
	Use frame_uncache() to set or forbid frame image uncaching. More...

int	frame_w (int frame) const
	Return the frame dimensions of a frame. More...

int	frame_x (int frame) const
	Return the frame position of a frame. More...

int	frame_y (int frame) const
	Return the frame position of a frame. More...

int	frames () const
	Get the number of frames in the animation. More...

Fl_Image *	image () const
	Return the current frame image. More...

Fl_Image *	image (int frame) const
	Return the image of the given frame index. More...

bool	is_animated () const
	Check if this is a valid animation with more than one frame. More...

bool	load (const char name, const unsigned char imgdata=NULL, size_t imglength=0)
	Load an animation from a file or from a memory block. More...

const char *	name () const
	Return the name of the played file as specified in the constructor. More...

bool	next ()
	Show the next frame if the animation is stopped. More...

bool	playing () const
	Return if the animation is currently running or stopped. More...

Fl_Anim_GIF_Image &	resize (double scale)
	Resizes the image to the specified size, replacing the current image. More...

Fl_Anim_GIF_Image &	resize (int w, int h)
	Resizes the image to the specified size, replacing the current image. More...

double	speed () const
	Get the animation speed factor. More...

void	speed (double speed)
	Set the animation speed factor. More...

bool	start ()
	The start() method (re-)starts the playing of the frames. More...

bool	stop ()
	The stop() method stops the playing of the frames. More...

void	uncache () FL_OVERRIDE
	Uncache all cached image data now. More...

bool	valid () const
	Check if animation is valid. More...

	~Fl_Anim_GIF_Image () FL_OVERRIDE
	Release the image and all cached data. More...

Public Member Functions inherited from Fl_GIF_Image
	Fl_GIF_Image (const char *filename)
	This constructor loads a GIF image from the given file. More...

	Fl_GIF_Image (const char imagename, const unsigned char data)
	This constructor loads a GIF image from memory (deprecated). More...

	Fl_GIF_Image (const char imagename, const unsigned char data, const size_t length)
	This constructor loads a GIF image from memory. More...

Public Member Functions inherited from Fl_Pixmap
int	cache_h ()

int	cache_w ()

void	color_average (Fl_Color c, float i) FL_OVERRIDE
	The color_average() method averages the colors in the image with the provided FLTK color value. More...

Fl_Image *	copy () const

Fl_Image *	copy (int W, int H) const FL_OVERRIDE
	Creates a resized copy of the image. More...

void	desaturate () FL_OVERRIDE
	The desaturate() method converts an image to grayscale. More...

void	draw (int X, int Y)

void	draw (int X, int Y, int W, int H, int cx=0, int cy=0) FL_OVERRIDE
	Draws the image to the current drawing surface with a bounding box. More...

	Fl_Pixmap (char const D)
	The constructors create a new pixmap from the specified XPM data. More...

	Fl_Pixmap (const char const D)
	The constructors create a new pixmap from the specified XPM data. More...

	Fl_Pixmap (const uchar const D)
	The constructors create a new pixmap from the specified XPM data. More...

	Fl_Pixmap (uchar const D)
	The constructors create a new pixmap from the specified XPM data. More...

void	label (Fl_Menu_Item *m) FL_OVERRIDE
	This method is an obsolete way to set the image attribute of a menu item. More...

void	label (Fl_Widget *w) FL_OVERRIDE
	This method is an obsolete way to set the image attribute of a widget or menu item. More...

void	uncache () FL_OVERRIDE
	If the image has been cached for display, delete the cache data. More...

virtual	~Fl_Pixmap ()
	The destructor frees all memory and server resources that are used by the pixmap.

Public Member Functions inherited from Fl_Image
virtual class Fl_Shared_Image *	as_shared_image ()
	Returns whether an image is an Fl_Shared_Image or not. More...

virtual void	color_average (Fl_Color c, float i)
	The color_average() method averages the colors in the image with the provided FLTK color value. More...

Fl_Image *	copy () const
	Creates a copy of the image in the same size. More...

virtual Fl_Image *	copy (int W, int H) const
	Creates a resized copy of the image. More...

int	count () const
	Returns the number of data values associated with the image. More...

int	d () const
	Returns the image depth. More...

const char const	data () const
	Returns a pointer to the current image data array. More...

int	data_h () const
	Returns the height of the image data.

int	data_w () const
	Returns the width of the image data.

virtual void	desaturate ()
	The desaturate() method converts an image to grayscale. More...

void	draw (int X, int Y)
	Draws the image to the current drawing surface. More...

virtual void	draw (int X, int Y, int W, int H, int cx=0, int cy=0)
	Draws the image to the current drawing surface with a bounding box. More...

int	fail () const
	Returns a value that is not 0 if there is currently no image available. More...

	Fl_Image (int W, int H, int D)
	The constructor creates an empty image with the specified width, height, and depth. More...

int	h () const
	Returns the current image drawing height in FLTK units. More...

void	inactive ()
	The inactive() method calls color_average(FL_BACKGROUND_COLOR, 0.33f) to produce an image that appears grayed out. More...

virtual void	label (Fl_Menu_Item *m)
	This method is an obsolete way to set the image attribute of a menu item. More...

virtual void	label (Fl_Widget *w)
	This method is an obsolete way to set the image attribute of a widget or menu item. More...

int	ld () const
	Returns the current line data size in bytes. More...

virtual void	release ()
	Releases an Fl_Image - the same as '`delete` `this'`. More...

virtual void	scale (int width, int height, int proportional=1, int can_expand=0)
	Sets the drawing size of the image. More...

virtual void	uncache ()
	If the image has been cached for display, delete the cache data. More...

int	w () const
	Returns the current image drawing width in FLTK units. More...

virtual	~Fl_Image ()
	The destructor is a virtual method that frees all memory used by the image.

Static Public Member Functions
static int	frame_count (const char name, const unsigned char imgdata=NULL, size_t imglength=0)
	Get the number of frames in a GIF file or in a GIF compressed data block. More...

Static Public Member Functions inherited from Fl_GIF_Image
static bool	is_animated (const char *name_)

Static Public Member Functions inherited from Fl_Image
static Fl_Labeltype	define_FL_IMAGE_LABEL ()

static Fl_RGB_Scaling	RGB_scaling ()
	Returns the currently used RGB image scaling method.

static void	RGB_scaling (Fl_RGB_Scaling)
	Sets the RGB image scaling method used for copy(int, int). More...

static Fl_RGB_Scaling	scaling_algorithm ()
	Gets what algorithm is used when resizing a source image to draw it.

static void	scaling_algorithm (Fl_RGB_Scaling algorithm)
	Sets what algorithm is used when resizing a source image to draw it. More...

Static Public Attributes
static bool	loop = true
	The loop flag can be used to (dis-)allow loop count. More...

static double	min_delay = 0.
	The min_delay value can be used to set a minimum value for the frame delay for playback. More...

Static Public Attributes inherited from Fl_GIF_Image
static bool	animate = false
	Sets how the shared image core routine should treat animated GIF files. More...

Static Public Attributes inherited from Fl_Image
static const int	ERR_FILE_ACCESS = -2

static const int	ERR_FORMAT = -3

static const int	ERR_MEMORY_ACCESS = -4

static const int	ERR_NO_IMAGE = -1

static bool	register_images_done = false
	True after fl_register_images() was called, false before.

Protected Member Functions
void	clear_frames ()

bool	next_frame ()

void	on_extension_data (Fl_GIF_Image::GIF_FRAME &f) FL_OVERRIDE

void	on_frame_data (Fl_GIF_Image::GIF_FRAME &f) FL_OVERRIDE

void	scale_frame ()

void	set_frame ()

void	set_frame (int frame)

Protected Member Functions inherited from Fl_GIF_Image
	Fl_GIF_Image ()
	The default constructor creates an empty GIF image.

	Fl_GIF_Image (const char *filename, bool anim)

	Fl_GIF_Image (const char imagename, const unsigned char data, const size_t length, bool anim)

void	load (const char *filename, bool anim)
	The protected load() methods are used by Fl_Anim_GIF_Image to request loading of animated GIF's.

void	load (const char imagename, const unsigned char data, const size_t length, bool anim)

void	load_gif_ (class Fl_Image_Reader &rdr, bool anim=false)

virtual void	on_extension_data (GIF_FRAME &)

virtual void	on_frame_data (GIF_FRAME &)

Protected Member Functions inherited from Fl_Pixmap
void	measure ()

Protected Member Functions inherited from Fl_Image
void	d (int D)
	Sets the current image depth.

void	data (const char const p, int c)
	Sets the current data pointer and count of pointers in the array. More...

void	draw_empty (int X, int Y)
	The protected method draw_empty() draws a box with an X in it. More...

int	draw_scaled (int X, int Y, int W, int H)
	Draw the image to the current drawing surface rescaled to a given width and height. More...

void	h (int H)
	Sets the height of the image data. More...

void	ld (int LD)
	Sets the current line data size in bytes. More...

void	w (int W)
	Sets the width of the image data. More...

Static Protected Member Functions
static void	cb_animate (void *d)

Static Protected Member Functions inherited from Fl_Image
static void	labeltype (const Fl_Label *lo, int lx, int ly, int lw, int lh, Fl_Align la)

static void	measure (const Fl_Label *lo, int &lw, int &lh)

Additional Inherited Members
Public Attributes inherited from Fl_Pixmap
int	alloc_data

Detailed Description

The Fl_Anim_GIF_Image class supports loading, caching, and drawing of animated Compuserve GIF^SM images.

The class loads all images contained in the file and animates them by cycling through them as defined by the delay times in the image file.

The user must supply an FLTK widget as "container" in order to see the animation by specifying it in the constructor or later using the canvas() method.

Member Enumeration Documentation

◆ Flags

enum Fl_Anim_GIF_Image::Flags

When opening an Fl_Anim_GIF_Image there are some options that can be passed in a flags value.

Enumerator
DONT_START	This flag indicates to the loader that it should not start the animation immediately after successful load, which is the default. It can be started later using the start() method.
DONT_RESIZE_CANVAS	This flag indicates to the loader that it should not resize the canvas widget of the animation to the dimensions of the animation, which is the default. Needed for special use cases.
DONT_SET_AS_IMAGE	This flag indicates to the loader that it should not set the animation as image() member of the canvas widget, which is the default. Needed for special use cases.
OPTIMIZE_MEMORY	Often frames change just a small area of the animation canvas. This flag indicates to the loader to try using less memory by storing frame data not as canvas-sized images but use the sizes defined in the GIF file. The drawbacks are higher cpu usage during playback and maybe minor artifacts when resized.
LOG_FLAG	This flag can be used to print informations about the decoding process to the console.
DEBUG_FLAG	This flag can be used to print even more informations about the decoding process to the console.

Constructor & Destructor Documentation

◆ Fl_Anim_GIF_Image() [1/2]

Fl_Anim_GIF_Image::Fl_Anim_GIF_Image	(	const char *	filename,
		Fl_Widget *	canvas = `0`,
		unsigned short	flags = `0`
	)

Load an animated GIF image from a file.

This constructor creates an animated image from a GIF-formatted file. Optionally it applies the canvas() method after successful load. If DONT_START is not specified in the flags parameter it calls start() after successful load.

Parameters

[in]	filename	path and name of GIF file in the file system
[in]	canvas	a widget that will show and animate the GIF, or `NULL`
[in]	flags	see Flags for details, or 0

Note: The GIF image must be decoupled from the canvas by calling myGif->canvas(NULL); before deleting the canvas.

◆ Fl_Anim_GIF_Image() [2/2]

Fl_Anim_GIF_Image::Fl_Anim_GIF_Image	(	const char *	imagename,
		const unsigned char *	data,
		const size_t	length,
		Fl_Widget *	canvas = `0`,
		unsigned short	flags = `0`
	)

Load an animated GIF image from memory.

This constructor creates an animated image from a GIF-formatted block in memory. Optionally it applies the canvas() method after successful load. If DONT_START is not specified in the flags parameter it calls start() after successful load.

imagename can be NULL. If a name is given, the image is added to the list of shared images and will be available by that name.

Parameters

[in]	imagename	a name given to this image or `NULL`
[in]	data	pointer to the start of the GIF image in memory
[in]	length	length of the GIF image in memory
[in]	canvas	a widget that will show and animate the GIF, or `NULL`
[in]	flags	see Flags for details, or 0

Note: The GIF image must be decoupled from the canvas by calling myGif->canvas(NULL); before deleting the canvas.

◆ ~Fl_Anim_GIF_Image()

Fl_Anim_GIF_Image::~Fl_Anim_GIF_Image ( )

Release the image and all cached data.

Also removes the animation timer.

Member Function Documentation

◆ canvas() [1/2]

Fl_Widget * Fl_Anim_GIF_Image::canvas ( ) const

Gets the current widget, that is used to display the frame images.

Returns: a pointer to a widget

◆ canvas() [2/2]

void Fl_Anim_GIF_Image::canvas	(	Fl_Widget *	canvas,
		unsigned short	flags = `0`
	)

Link the image back to a widget for automated animation.

This method sets current widget, that is used to display the frame images. The flags parameter specifies whether the canvas widget is resized to the animation dimensions and/or its image() method will be used to set the current frame image during animation.

Parameters

[in]	canvas	a pointer to the widget that will show the animation
[in]	flags	see Flags

Note: The GIF image must be decoupled from the canvas by calling myGif->canvas(NULL); before deleting the canvas.

◆ canvas_h()

int Fl_Anim_GIF_Image::canvas_h ( ) const

Return the height of the animation canvas.

Returns: the width in pixel units

◆ canvas_w()

int Fl_Anim_GIF_Image::canvas_w ( ) const

Return the width of the animation canvas.

Returns: the width in pixel units

◆ color_average()

void Fl_Anim_GIF_Image::color_average	(	Fl_Color	c,
		float	i
	)

virtual

Applies a color average to all frames.

The color_average() method averages the colors in the image with the provided FLTK color value.

Parameters

[in]	c	blend color
[in]	i	a value between 0.0 and 1.0 where 0 results in the blend color, and 1 returns the original image

Reimplemented from Fl_Image.

◆ copy()

Fl_Image * Fl_Anim_GIF_Image::copy	(	int	W,
		int	H
	)		const

virtual

Copy and resize the animation frames.

The virtual copy() method makes a copy of the animated image and resizes all of its frame images to W x H using the current resize method.

Parameters

[in] W,H new size in FLTK pixel units

Returns: the resized copy of the animation

Reimplemented from Fl_Image.

◆ delay() [1/2]

void Fl_Anim_GIF_Image::delay	(	int	frame,
		double	delay
	)

Set the delay of frame [0-frames() -1] in seconds.

Parameters

[in]	frame	index into frame list
[in]	delay	to next frame in seconds

◆ delay() [2/2]

double Fl_Anim_GIF_Image::delay ( int frame ) const

Return the delay of frame [0-frames() -1] in seconds.

Parameters

[in] frame index into frame list

Returns: delay to next frame in seconds

◆ desaturate()

void Fl_Anim_GIF_Image::desaturate ( )

virtual

Desaturate to all frames of the animation.

Reimplemented from Fl_Image.

◆ draw()

void Fl_Anim_GIF_Image::draw	(	int	x,
		int	y,
		int	w,
		int	h,
		int	cx = `0`,
		int	cy = `0`
	)

virtual

Draw the current frame of the animation.

Parameters

[in]	x,y,w,h	target rectangle
[in]	cx,cy	source offset

Reimplemented from Fl_Image.

◆ frame() [1/2]

int Fl_Anim_GIF_Image::frame ( ) const

Return the current frame.

Returns: the current frame index in the range for 0 to frames()-1.; -1 if the image has no frames.

◆ frame() [2/2]

void Fl_Anim_GIF_Image::frame ( int frame )

Set the current frame.

Parameters

[in] frame index into list of frames

◆ frame_count()

int Fl_Anim_GIF_Image::frame_count	(	const char *	name,
		const unsigned char *	imgdata = `NULL`,
		size_t	imglength = `0`
	)

static

Get the number of frames in a GIF file or in a GIF compressed data block.

The static frame_count() method is just a convenience method for getting the number of images (frames) stored in a GIF file.

As this count is not readily available in the GIF header, the whole GIF file has be parsed (which is done here by using a temporary Fl_Anim_GIF_Image object for simplicity). So this call may be slow with large files.

If imgdata is NULL, the image will be read from the file. Otherwise, it will be read from memory.

Parameters

[in]	name	path and name of GIF file in the file system, ignored when reading from memeory
[in]	imgdata	pointer to the start of the GIF image in memory, or `NULL` to read from a file
[in]	imglength	length of the GIF image in memory, or `0`

Returns: the number of frames in the animation

◆ frame_h()

int Fl_Anim_GIF_Image::frame_h ( int frame ) const

Return the frame dimensions of a frame.

Usefull only if loaded with 'optimize_mem' and the animation also has size optimized frames.

Parameters

[in] frame index into frame list

Returns: height in FLTK pixle units

◆ frame_uncache() [1/2]

bool Fl_Anim_GIF_Image::frame_uncache ( ) const

Return the active frame_uncache() setting.

Returns: true if caching is disabled

◆ frame_uncache() [2/2]

void Fl_Anim_GIF_Image::frame_uncache ( bool uncache )

Use frame_uncache() to set or forbid frame image uncaching.

If frame uncaching is set, frame images are not offscreen cached for re-use and will be re-created every time they are displayed. This saves a lot of memory on the expense of cpu usage and should be carefully considered. Per default frame caching will be done.

Parameters

[in] uncache true to disable caching

◆ frame_w()

int Fl_Anim_GIF_Image::frame_w ( int frame ) const

Return the frame dimensions of a frame.

Usefull only if loaded with 'optimize_mem' and the animation also has size optimized frames.

Parameters

[in] frame index into frame list

Returns: width in FLTK pixle units

◆ frame_x()

int Fl_Anim_GIF_Image::frame_x ( int frame ) const

Return the frame position of a frame.

Usefull only if loaded with 'optimize_mem' and the animation also has size optimized frames.

Parameters

[in] frame index into frame list

Returns: x position in FLTK pixle units

◆ frame_y()

int Fl_Anim_GIF_Image::frame_y ( int frame ) const

Return the frame position of a frame.

Usefull only if loaded with 'optimize_mem' and the animation also has size optimized frames.

Parameters

[in] frame index into frame list

Returns: y position in FLTK pixle units

◆ frames()

int Fl_Anim_GIF_Image::frames ( ) const

Get the number of frames in the animation.

Returns: the number of frames

◆ image() [1/2]

Fl_Image * Fl_Anim_GIF_Image::image ( ) const

Return the current frame image.

Returns: a pointer to the image or NULL if this is not an animation.

◆ image() [2/2]

Fl_Image * Fl_Anim_GIF_Image::image ( int frame_ ) const

Return the image of the given frame index.

Parameters

[in] frame_ index into list of frames

Returns: image data or NULL if the frame number is not valid.

◆ is_animated()

bool Fl_Anim_GIF_Image::is_animated ( ) const

Check if this is a valid animation with more than one frame.

The is_animated() method is just a convenience method for testing the valid flag and the frame count beeing greater 1.

Returns: true if the animation is valid and has multiple frames.

◆ load()

bool Fl_Anim_GIF_Image::load	(	const char *	name,
		const unsigned char *	imgdata = `NULL`,
		size_t	imglength = `0`
	)

Load an animation from a file or from a memory block.

The load() method is either used from the constructor to load the image from the given file, or to re-load an existing animation from another file.

Parameters

[in]	name	path and name of GIF file in the file system, or the image name when reading from memory
[in]	imgdata	pointer to the start of the GIF image in memory, or `NULL` to read from a file
[in]	imglength	length of the GIF image in memory, or `0`

Returns: true if the animation loaded correctly

◆ name()

const char * Fl_Anim_GIF_Image::name ( ) const

Return the name of the played file as specified in the constructor.

If read from a memory block, this returns the name of the animation.

Returns: pointer to a C string

◆ next()

bool Fl_Anim_GIF_Image::next ( )

Show the next frame if the animation is stopped.

Returns: true if the animation has frames

◆ on_extension_data()

void Fl_Anim_GIF_Image::on_extension_data ( Fl_GIF_Image::GIF_FRAME & f )

protectedvirtual

Reimplemented from Fl_GIF_Image.

◆ on_frame_data()

void Fl_Anim_GIF_Image::on_frame_data ( Fl_GIF_Image::GIF_FRAME & f )

protectedvirtual

Reimplemented from Fl_GIF_Image.

◆ playing()

bool Fl_Anim_GIF_Image::playing ( ) const

inline

Return if the animation is currently running or stopped.

Returns: true if the animation is running

◆ resize() [1/2]

Fl_Anim_GIF_Image & Fl_Anim_GIF_Image::resize ( double scale )

Resizes the image to the specified size, replacing the current image.

If DONT_RESIZE_CANVAS is not set, the canvas widget will also be resized.

Parameters

[in] scale rescale factor in relation to current size

◆ resize() [2/2]

Fl_Anim_GIF_Image & Fl_Anim_GIF_Image::resize	(	int	w,
		int	h
	)

Resizes the image to the specified size, replacing the current image.

If DONT_RESIZE_CANVAS is not set, the canvas widget will also be resized.

Parameters

[in] w,h new size of teh naimtion frames

◆ speed() [1/2]

double Fl_Anim_GIF_Image::speed ( ) const

Get the animation speed factor.

Returns: the current speed factor

◆ speed() [2/2]

void Fl_Anim_GIF_Image::speed ( double speed )

Set the animation speed factor.

The speed() method changes the playing speed to speed x original speed. E.g. to play at half speed call it with 0.5, for double speed with 2.

Parameters

[in] speed floating point speed factor

◆ start()

bool Fl_Anim_GIF_Image::start ( )

The start() method (re-)starts the playing of the frames.

Returns: true if the animation has frames

◆ stop()

bool Fl_Anim_GIF_Image::stop ( )

The stop() method stops the playing of the frames.

Returns: true if the animation has frames

◆ uncache()

void Fl_Anim_GIF_Image::uncache ( )

virtual

Uncache all cached image data now.

Re-implemented from Fl_Pixmap.

Reimplemented from Fl_Image.

◆ valid()

bool Fl_Anim_GIF_Image::valid ( ) const

Check if animation is valid.

Returns: true if the class has successfully loaded and the image has at least one frame.

Member Data Documentation

◆ loop

bool Fl_Anim_GIF_Image::loop = true

static

The loop flag can be used to (dis-)allow loop count.

If set (which is the default), the animation will be stopped after the number of repeats specified in the GIF file (typically this count is set to 'forever' anyway). If cleared the animation will always be 'forever', regardless of what is specified in the GIF file.

◆ min_delay

double Fl_Anim_GIF_Image::min_delay = 0.

static

The min_delay value can be used to set a minimum value for the frame delay for playback.

This is to prevent CPU hogs caused by images with very low delay rates. This is a global value for all Fl_Anim_GIF_Image objects.

The documentation for this class was generated from the following files:

Fl_Anim_GIF_Image.H
Fl_Anim_GIF_Image.cxx

Public Types

Public Member Functions

Static Public Member Functions

Static Public Attributes

Protected Member Functions

Static Protected Member Functions

Additional Inherited Members

Detailed Description

Member Enumeration Documentation

◆ Flags

Constructor & Destructor Documentation

◆ Fl_Anim_GIF_Image() [1/2]

◆ Fl_Anim_GIF_Image() [2/2]

◆ ~Fl_Anim_GIF_Image()

Member Function Documentation

◆ canvas() [1/2]

◆ canvas() [2/2]

◆ canvas_h()

◆ canvas_w()

◆ color_average()

◆ copy()

◆ delay() [1/2]

◆ delay() [2/2]

◆ desaturate()

◆ draw()

◆ frame() [1/2]

◆ frame() [2/2]

◆ frame_count()

◆ frame_h()

◆ frame_uncache() [1/2]

◆ frame_uncache() [2/2]

◆ frame_w()

◆ frame_x()

◆ frame_y()

◆ frames()

◆ image() [1/2]

◆ image() [2/2]

◆ is_animated()

◆ load()

◆ name()

◆ next()

◆ on_extension_data()

◆ on_frame_data()

◆ playing()

◆ resize() [1/2]

◆ resize() [2/2]

◆ speed() [1/2]

◆ speed() [2/2]

◆ start()

◆ stop()

◆ uncache()

◆ valid()

Member Data Documentation

◆ loop

◆ min_delay